arnaucube.com/blog/js/katex/katex.js
blog/js/katex/katex.jsRaw
1(function webpackUniversalModuleDefinition(root, factory) {
2 if(typeof exports === 'object' && typeof module === 'object')
3 module.exports = factory();
4 else if(typeof define === 'function' && define.amd)
5 define([], factory);
6 else if(typeof exports === 'object')
7 exports["katex"] = factory();
8 else
9 root["katex"] = factory();
10})((typeof self !== 'undefined' ? self : this), function() {
11return /******/ (function() { // webpackBootstrap
12/******/ "use strict";
13/******/ // The require scope
14/******/ var __webpack_require__ = {};
15/******/
16/************************************************************************/
17/******/ /* webpack/runtime/define property getters */
18/******/ !function() {
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20/******/ __webpack_require__.d = function(exports, definition) {
21/******/ for(var key in definition) {
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23/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
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29/******/ /* webpack/runtime/hasOwnProperty shorthand */
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34/************************************************************************/
35var __webpack_exports__ = {};
36
37// EXPORTS
38__webpack_require__.d(__webpack_exports__, {
39 "default": function() { return /* binding */ katex_webpack; }
40});
41
42;// CONCATENATED MODULE: ./src/ParseError.js
43
44
45/**
46 * This is the ParseError class, which is the main error thrown by KaTeX
47 * functions when something has gone wrong. This is used to distinguish internal
48 * errors from errors in the expression that the user provided.
49 *
50 * If possible, a caller should provide a Token or ParseNode with information
51 * about where in the source string the problem occurred.
52 */
53var ParseError = // Error position based on passed-in Token or ParseNode.
54function ParseError(message, // The error message
55token // An object providing position information
56) {
57 this.position = void 0;
58 var error = "KaTeX parse error: " + message;
59 var start;
60 var loc = token && token.loc;
61
62 if (loc && loc.start <= loc.end) {
63 // If we have the input and a position, make the error a bit fancier
64 // Get the input
65 var input = loc.lexer.input; // Prepend some information
66
67 start = loc.start;
68 var end = loc.end;
69
70 if (start === input.length) {
71 error += " at end of input: ";
72 } else {
73 error += " at position " + (start + 1) + ": ";
74 } // Underline token in question using combining underscores
75
76
77 var underlined = input.slice(start, end).replace(/[^]/g, "$&\u0332"); // Extract some context from the input and add it to the error
78
79 var left;
80
81 if (start > 15) {
82 left = "…" + input.slice(start - 15, start);
83 } else {
84 left = input.slice(0, start);
85 }
86
87 var right;
88
89 if (end + 15 < input.length) {
90 right = input.slice(end, end + 15) + "…";
91 } else {
92 right = input.slice(end);
93 }
94
95 error += left + underlined + right;
96 } // Some hackery to make ParseError a prototype of Error
97 // See http://stackoverflow.com/a/8460753
98
99
100 var self = new Error(error);
101 self.name = "ParseError"; // $FlowFixMe
102
103 self.__proto__ = ParseError.prototype; // $FlowFixMe
104
105 self.position = start;
106 return self;
107}; // $FlowFixMe More hackery
108
109
110ParseError.prototype.__proto__ = Error.prototype;
111/* harmony default export */ var src_ParseError = (ParseError);
112;// CONCATENATED MODULE: ./src/utils.js
113/**
114 * This file contains a list of utility functions which are useful in other
115 * files.
116 */
117
118/**
119 * Return whether an element is contained in a list
120 */
121var contains = function contains(list, elem) {
122 return list.indexOf(elem) !== -1;
123};
124/**
125 * Provide a default value if a setting is undefined
126 * NOTE: Couldn't use `T` as the output type due to facebook/flow#5022.
127 */
128
129
130var deflt = function deflt(setting, defaultIfUndefined) {
131 return setting === undefined ? defaultIfUndefined : setting;
132}; // hyphenate and escape adapted from Facebook's React under Apache 2 license
133
134
135var uppercase = /([A-Z])/g;
136
137var hyphenate = function hyphenate(str) {
138 return str.replace(uppercase, "-$1").toLowerCase();
139};
140
141var ESCAPE_LOOKUP = {
142 "&": "&",
143 ">": ">",
144 "<": "<",
145 "\"": """,
146 "'": "'"
147};
148var ESCAPE_REGEX = /[&><"']/g;
149/**
150 * Escapes text to prevent scripting attacks.
151 */
152
153function utils_escape(text) {
154 return String(text).replace(ESCAPE_REGEX, function (match) {
155 return ESCAPE_LOOKUP[match];
156 });
157}
158/**
159 * Sometimes we want to pull out the innermost element of a group. In most
160 * cases, this will just be the group itself, but when ordgroups and colors have
161 * a single element, we want to pull that out.
162 */
163
164
165var getBaseElem = function getBaseElem(group) {
166 if (group.type === "ordgroup") {
167 if (group.body.length === 1) {
168 return getBaseElem(group.body[0]);
169 } else {
170 return group;
171 }
172 } else if (group.type === "color") {
173 if (group.body.length === 1) {
174 return getBaseElem(group.body[0]);
175 } else {
176 return group;
177 }
178 } else if (group.type === "font") {
179 return getBaseElem(group.body);
180 } else {
181 return group;
182 }
183};
184/**
185 * TeXbook algorithms often reference "character boxes", which are simply groups
186 * with a single character in them. To decide if something is a character box,
187 * we find its innermost group, and see if it is a single character.
188 */
189
190
191var isCharacterBox = function isCharacterBox(group) {
192 var baseElem = getBaseElem(group); // These are all they types of groups which hold single characters
193
194 return baseElem.type === "mathord" || baseElem.type === "textord" || baseElem.type === "atom";
195};
196
197var assert = function assert(value) {
198 if (!value) {
199 throw new Error('Expected non-null, but got ' + String(value));
200 }
201
202 return value;
203};
204/**
205 * Return the protocol of a URL, or "_relative" if the URL does not specify a
206 * protocol (and thus is relative).
207 */
208
209var protocolFromUrl = function protocolFromUrl(url) {
210 var protocol = /^\s*([^\\/#]*?)(?::|�*58|�*3a)/i.exec(url);
211 return protocol != null ? protocol[1] : "_relative";
212};
213/* harmony default export */ var utils = ({
214 contains: contains,
215 deflt: deflt,
216 escape: utils_escape,
217 hyphenate: hyphenate,
218 getBaseElem: getBaseElem,
219 isCharacterBox: isCharacterBox,
220 protocolFromUrl: protocolFromUrl
221});
222;// CONCATENATED MODULE: ./src/Settings.js
223/* eslint no-console:0 */
224
225/**
226 * This is a module for storing settings passed into KaTeX. It correctly handles
227 * default settings.
228 */
229
230
231
232// TODO: automatically generate documentation
233// TODO: check all properties on Settings exist
234// TODO: check the type of a property on Settings matches
235var SETTINGS_SCHEMA = {
236 displayMode: {
237 type: "boolean",
238 description: "Render math in display mode, which puts the math in " + "display style (so \\int and \\sum are large, for example), and " + "centers the math on the page on its own line.",
239 cli: "-d, --display-mode"
240 },
241 output: {
242 type: {
243 enum: ["htmlAndMathml", "html", "mathml"]
244 },
245 description: "Determines the markup language of the output.",
246 cli: "-F, --format <type>"
247 },
248 leqno: {
249 type: "boolean",
250 description: "Render display math in leqno style (left-justified tags)."
251 },
252 fleqn: {
253 type: "boolean",
254 description: "Render display math flush left."
255 },
256 throwOnError: {
257 type: "boolean",
258 default: true,
259 cli: "-t, --no-throw-on-error",
260 cliDescription: "Render errors (in the color given by --error-color) ins" + "tead of throwing a ParseError exception when encountering an error."
261 },
262 errorColor: {
263 type: "string",
264 default: "#cc0000",
265 cli: "-c, --error-color <color>",
266 cliDescription: "A color string given in the format 'rgb' or 'rrggbb' " + "(no #). This option determines the color of errors rendered by the " + "-t option.",
267 cliProcessor: function cliProcessor(color) {
268 return "#" + color;
269 }
270 },
271 macros: {
272 type: "object",
273 cli: "-m, --macro <def>",
274 cliDescription: "Define custom macro of the form '\\foo:expansion' (use " + "multiple -m arguments for multiple macros).",
275 cliDefault: [],
276 cliProcessor: function cliProcessor(def, defs) {
277 defs.push(def);
278 return defs;
279 }
280 },
281 minRuleThickness: {
282 type: "number",
283 description: "Specifies a minimum thickness, in ems, for fraction lines," + " `\\sqrt` top lines, `{array}` vertical lines, `\\hline`, " + "`\\hdashline`, `\\underline`, `\\overline`, and the borders of " + "`\\fbox`, `\\boxed`, and `\\fcolorbox`.",
284 processor: function processor(t) {
285 return Math.max(0, t);
286 },
287 cli: "--min-rule-thickness <size>",
288 cliProcessor: parseFloat
289 },
290 colorIsTextColor: {
291 type: "boolean",
292 description: "Makes \\color behave like LaTeX's 2-argument \\textcolor, " + "instead of LaTeX's one-argument \\color mode change.",
293 cli: "-b, --color-is-text-color"
294 },
295 strict: {
296 type: [{
297 enum: ["warn", "ignore", "error"]
298 }, "boolean", "function"],
299 description: "Turn on strict / LaTeX faithfulness mode, which throws an " + "error if the input uses features that are not supported by LaTeX.",
300 cli: "-S, --strict",
301 cliDefault: false
302 },
303 trust: {
304 type: ["boolean", "function"],
305 description: "Trust the input, enabling all HTML features such as \\url.",
306 cli: "-T, --trust"
307 },
308 maxSize: {
309 type: "number",
310 default: Infinity,
311 description: "If non-zero, all user-specified sizes, e.g. in " + "\\rule{500em}{500em}, will be capped to maxSize ems. Otherwise, " + "elements and spaces can be arbitrarily large",
312 processor: function processor(s) {
313 return Math.max(0, s);
314 },
315 cli: "-s, --max-size <n>",
316 cliProcessor: parseInt
317 },
318 maxExpand: {
319 type: "number",
320 default: 1000,
321 description: "Limit the number of macro expansions to the specified " + "number, to prevent e.g. infinite macro loops. If set to Infinity, " + "the macro expander will try to fully expand as in LaTeX.",
322 processor: function processor(n) {
323 return Math.max(0, n);
324 },
325 cli: "-e, --max-expand <n>",
326 cliProcessor: function cliProcessor(n) {
327 return n === "Infinity" ? Infinity : parseInt(n);
328 }
329 },
330 globalGroup: {
331 type: "boolean",
332 cli: false
333 }
334};
335
336function getDefaultValue(schema) {
337 if (schema.default) {
338 return schema.default;
339 }
340
341 var type = schema.type;
342 var defaultType = Array.isArray(type) ? type[0] : type;
343
344 if (typeof defaultType !== 'string') {
345 return defaultType.enum[0];
346 }
347
348 switch (defaultType) {
349 case 'boolean':
350 return false;
351
352 case 'string':
353 return '';
354
355 case 'number':
356 return 0;
357
358 case 'object':
359 return {};
360 }
361}
362/**
363 * The main Settings object
364 *
365 * The current options stored are:
366 * - displayMode: Whether the expression should be typeset as inline math
367 * (false, the default), meaning that the math starts in
368 * \textstyle and is placed in an inline-block); or as display
369 * math (true), meaning that the math starts in \displaystyle
370 * and is placed in a block with vertical margin.
371 */
372
373
374var Settings = /*#__PURE__*/function () {
375 function Settings(options) {
376 this.displayMode = void 0;
377 this.output = void 0;
378 this.leqno = void 0;
379 this.fleqn = void 0;
380 this.throwOnError = void 0;
381 this.errorColor = void 0;
382 this.macros = void 0;
383 this.minRuleThickness = void 0;
384 this.colorIsTextColor = void 0;
385 this.strict = void 0;
386 this.trust = void 0;
387 this.maxSize = void 0;
388 this.maxExpand = void 0;
389 this.globalGroup = void 0;
390 // allow null options
391 options = options || {};
392
393 for (var prop in SETTINGS_SCHEMA) {
394 if (SETTINGS_SCHEMA.hasOwnProperty(prop)) {
395 // $FlowFixMe
396 var schema = SETTINGS_SCHEMA[prop]; // TODO: validate options
397 // $FlowFixMe
398
399 this[prop] = options[prop] !== undefined ? schema.processor ? schema.processor(options[prop]) : options[prop] : getDefaultValue(schema);
400 }
401 }
402 }
403 /**
404 * Report nonstrict (non-LaTeX-compatible) input.
405 * Can safely not be called if `this.strict` is false in JavaScript.
406 */
407
408
409 var _proto = Settings.prototype;
410
411 _proto.reportNonstrict = function reportNonstrict(errorCode, errorMsg, token) {
412 var strict = this.strict;
413
414 if (typeof strict === "function") {
415 // Allow return value of strict function to be boolean or string
416 // (or null/undefined, meaning no further processing).
417 strict = strict(errorCode, errorMsg, token);
418 }
419
420 if (!strict || strict === "ignore") {
421 return;
422 } else if (strict === true || strict === "error") {
423 throw new src_ParseError("LaTeX-incompatible input and strict mode is set to 'error': " + (errorMsg + " [" + errorCode + "]"), token);
424 } else if (strict === "warn") {
425 typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to 'warn': " + (errorMsg + " [" + errorCode + "]"));
426 } else {
427 // won't happen in type-safe code
428 typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to " + ("unrecognized '" + strict + "': " + errorMsg + " [" + errorCode + "]"));
429 }
430 }
431 /**
432 * Check whether to apply strict (LaTeX-adhering) behavior for unusual
433 * input (like `\\`). Unlike `nonstrict`, will not throw an error;
434 * instead, "error" translates to a return value of `true`, while "ignore"
435 * translates to a return value of `false`. May still print a warning:
436 * "warn" prints a warning and returns `false`.
437 * This is for the second category of `errorCode`s listed in the README.
438 */
439 ;
440
441 _proto.useStrictBehavior = function useStrictBehavior(errorCode, errorMsg, token) {
442 var strict = this.strict;
443
444 if (typeof strict === "function") {
445 // Allow return value of strict function to be boolean or string
446 // (or null/undefined, meaning no further processing).
447 // But catch any exceptions thrown by function, treating them
448 // like "error".
449 try {
450 strict = strict(errorCode, errorMsg, token);
451 } catch (error) {
452 strict = "error";
453 }
454 }
455
456 if (!strict || strict === "ignore") {
457 return false;
458 } else if (strict === true || strict === "error") {
459 return true;
460 } else if (strict === "warn") {
461 typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to 'warn': " + (errorMsg + " [" + errorCode + "]"));
462 return false;
463 } else {
464 // won't happen in type-safe code
465 typeof console !== "undefined" && console.warn("LaTeX-incompatible input and strict mode is set to " + ("unrecognized '" + strict + "': " + errorMsg + " [" + errorCode + "]"));
466 return false;
467 }
468 }
469 /**
470 * Check whether to test potentially dangerous input, and return
471 * `true` (trusted) or `false` (untrusted). The sole argument `context`
472 * should be an object with `command` field specifying the relevant LaTeX
473 * command (as a string starting with `\`), and any other arguments, etc.
474 * If `context` has a `url` field, a `protocol` field will automatically
475 * get added by this function (changing the specified object).
476 */
477 ;
478
479 _proto.isTrusted = function isTrusted(context) {
480 if (context.url && !context.protocol) {
481 context.protocol = utils.protocolFromUrl(context.url);
482 }
483
484 var trust = typeof this.trust === "function" ? this.trust(context) : this.trust;
485 return Boolean(trust);
486 };
487
488 return Settings;
489}();
490
491
492;// CONCATENATED MODULE: ./src/Style.js
493/**
494 * This file contains information and classes for the various kinds of styles
495 * used in TeX. It provides a generic `Style` class, which holds information
496 * about a specific style. It then provides instances of all the different kinds
497 * of styles possible, and provides functions to move between them and get
498 * information about them.
499 */
500
501/**
502 * The main style class. Contains a unique id for the style, a size (which is
503 * the same for cramped and uncramped version of a style), and a cramped flag.
504 */
505var Style = /*#__PURE__*/function () {
506 function Style(id, size, cramped) {
507 this.id = void 0;
508 this.size = void 0;
509 this.cramped = void 0;
510 this.id = id;
511 this.size = size;
512 this.cramped = cramped;
513 }
514 /**
515 * Get the style of a superscript given a base in the current style.
516 */
517
518
519 var _proto = Style.prototype;
520
521 _proto.sup = function sup() {
522 return styles[_sup[this.id]];
523 }
524 /**
525 * Get the style of a subscript given a base in the current style.
526 */
527 ;
528
529 _proto.sub = function sub() {
530 return styles[_sub[this.id]];
531 }
532 /**
533 * Get the style of a fraction numerator given the fraction in the current
534 * style.
535 */
536 ;
537
538 _proto.fracNum = function fracNum() {
539 return styles[_fracNum[this.id]];
540 }
541 /**
542 * Get the style of a fraction denominator given the fraction in the current
543 * style.
544 */
545 ;
546
547 _proto.fracDen = function fracDen() {
548 return styles[_fracDen[this.id]];
549 }
550 /**
551 * Get the cramped version of a style (in particular, cramping a cramped style
552 * doesn't change the style).
553 */
554 ;
555
556 _proto.cramp = function cramp() {
557 return styles[_cramp[this.id]];
558 }
559 /**
560 * Get a text or display version of this style.
561 */
562 ;
563
564 _proto.text = function text() {
565 return styles[_text[this.id]];
566 }
567 /**
568 * Return true if this style is tightly spaced (scriptstyle/scriptscriptstyle)
569 */
570 ;
571
572 _proto.isTight = function isTight() {
573 return this.size >= 2;
574 };
575
576 return Style;
577}(); // Export an interface for type checking, but don't expose the implementation.
578// This way, no more styles can be generated.
579
580
581// IDs of the different styles
582var D = 0;
583var Dc = 1;
584var T = 2;
585var Tc = 3;
586var S = 4;
587var Sc = 5;
588var SS = 6;
589var SSc = 7; // Instances of the different styles
590
591var styles = [new Style(D, 0, false), new Style(Dc, 0, true), new Style(T, 1, false), new Style(Tc, 1, true), new Style(S, 2, false), new Style(Sc, 2, true), new Style(SS, 3, false), new Style(SSc, 3, true)]; // Lookup tables for switching from one style to another
592
593var _sup = [S, Sc, S, Sc, SS, SSc, SS, SSc];
594var _sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc];
595var _fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc];
596var _fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc];
597var _cramp = [Dc, Dc, Tc, Tc, Sc, Sc, SSc, SSc];
598var _text = [D, Dc, T, Tc, T, Tc, T, Tc]; // We only export some of the styles.
599
600/* harmony default export */ var src_Style = ({
601 DISPLAY: styles[D],
602 TEXT: styles[T],
603 SCRIPT: styles[S],
604 SCRIPTSCRIPT: styles[SS]
605});
606;// CONCATENATED MODULE: ./src/unicodeScripts.js
607/*
608 * This file defines the Unicode scripts and script families that we
609 * support. To add new scripts or families, just add a new entry to the
610 * scriptData array below. Adding scripts to the scriptData array allows
611 * characters from that script to appear in \text{} environments.
612 */
613
614/**
615 * Each script or script family has a name and an array of blocks.
616 * Each block is an array of two numbers which specify the start and
617 * end points (inclusive) of a block of Unicode codepoints.
618 */
619
620/**
621 * Unicode block data for the families of scripts we support in \text{}.
622 * Scripts only need to appear here if they do not have font metrics.
623 */
624var scriptData = [{
625 // Latin characters beyond the Latin-1 characters we have metrics for.
626 // Needed for Czech, Hungarian and Turkish text, for example.
627 name: 'latin',
628 blocks: [[0x0100, 0x024f], // Latin Extended-A and Latin Extended-B
629 [0x0300, 0x036f] // Combining Diacritical marks
630 ]
631}, {
632 // The Cyrillic script used by Russian and related languages.
633 // A Cyrillic subset used to be supported as explicitly defined
634 // symbols in symbols.js
635 name: 'cyrillic',
636 blocks: [[0x0400, 0x04ff]]
637}, {
638 // Armenian
639 name: 'armenian',
640 blocks: [[0x0530, 0x058F]]
641}, {
642 // The Brahmic scripts of South and Southeast Asia
643 // Devanagari (0900–097F)
644 // Bengali (0980–09FF)
645 // Gurmukhi (0A00–0A7F)
646 // Gujarati (0A80–0AFF)
647 // Oriya (0B00–0B7F)
648 // Tamil (0B80–0BFF)
649 // Telugu (0C00–0C7F)
650 // Kannada (0C80–0CFF)
651 // Malayalam (0D00–0D7F)
652 // Sinhala (0D80–0DFF)
653 // Thai (0E00–0E7F)
654 // Lao (0E80–0EFF)
655 // Tibetan (0F00–0FFF)
656 // Myanmar (1000–109F)
657 name: 'brahmic',
658 blocks: [[0x0900, 0x109F]]
659}, {
660 name: 'georgian',
661 blocks: [[0x10A0, 0x10ff]]
662}, {
663 // Chinese and Japanese.
664 // The "k" in cjk is for Korean, but we've separated Korean out
665 name: "cjk",
666 blocks: [[0x3000, 0x30FF], // CJK symbols and punctuation, Hiragana, Katakana
667 [0x4E00, 0x9FAF], // CJK ideograms
668 [0xFF00, 0xFF60] // Fullwidth punctuation
669 // TODO: add halfwidth Katakana and Romanji glyphs
670 ]
671}, {
672 // Korean
673 name: 'hangul',
674 blocks: [[0xAC00, 0xD7AF]]
675}];
676/**
677 * Given a codepoint, return the name of the script or script family
678 * it is from, or null if it is not part of a known block
679 */
680
681function scriptFromCodepoint(codepoint) {
682 for (var i = 0; i < scriptData.length; i++) {
683 var script = scriptData[i];
684
685 for (var _i = 0; _i < script.blocks.length; _i++) {
686 var block = script.blocks[_i];
687
688 if (codepoint >= block[0] && codepoint <= block[1]) {
689 return script.name;
690 }
691 }
692 }
693
694 return null;
695}
696/**
697 * A flattened version of all the supported blocks in a single array.
698 * This is an optimization to make supportedCodepoint() fast.
699 */
700
701var allBlocks = [];
702scriptData.forEach(function (s) {
703 return s.blocks.forEach(function (b) {
704 return allBlocks.push.apply(allBlocks, b);
705 });
706});
707/**
708 * Given a codepoint, return true if it falls within one of the
709 * scripts or script families defined above and false otherwise.
710 *
711 * Micro benchmarks shows that this is faster than
712 * /[\u3000-\u30FF\u4E00-\u9FAF\uFF00-\uFF60\uAC00-\uD7AF\u0900-\u109F]/.test()
713 * in Firefox, Chrome and Node.
714 */
715
716function supportedCodepoint(codepoint) {
717 for (var i = 0; i < allBlocks.length; i += 2) {
718 if (codepoint >= allBlocks[i] && codepoint <= allBlocks[i + 1]) {
719 return true;
720 }
721 }
722
723 return false;
724}
725;// CONCATENATED MODULE: ./src/svgGeometry.js
726/**
727 * This file provides support to domTree.js and delimiter.js.
728 * It's a storehouse of path geometry for SVG images.
729 */
730// In all paths below, the viewBox-to-em scale is 1000:1.
731var hLinePad = 80; // padding above a sqrt viniculum. Prevents image cropping.
732// The viniculum of a \sqrt can be made thicker by a KaTeX rendering option.
733// Think of variable extraViniculum as two detours in the SVG path.
734// The detour begins at the lower left of the area labeled extraViniculum below.
735// The detour proceeds one extraViniculum distance up and slightly to the right,
736// displacing the radiused corner between surd and viniculum. The radius is
737// traversed as usual, then the detour resumes. It goes right, to the end of
738// the very long viniculumn, then down one extraViniculum distance,
739// after which it resumes regular path geometry for the radical.
740
741/* viniculum
742 /
743 /▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒←extraViniculum
744 / █████████████████████←0.04em (40 unit) std viniculum thickness
745 / /
746 / /
747 / /\
748 / / surd
749*/
750
751var sqrtMain = function sqrtMain(extraViniculum, hLinePad) {
752 // sqrtMain path geometry is from glyph U221A in the font KaTeX Main
753 return "M95," + (622 + extraViniculum + hLinePad) + "\nc-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14\nc0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54\nc44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10\ns173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429\nc69,-144,104.5,-217.7,106.5,-221\nl" + extraViniculum / 2.075 + " -" + extraViniculum + "\nc5.3,-9.3,12,-14,20,-14\nH400000v" + (40 + extraViniculum) + "H845.2724\ns-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7\nc-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47z\nM" + (834 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z";
754};
755
756var sqrtSize1 = function sqrtSize1(extraViniculum, hLinePad) {
757 // size1 is from glyph U221A in the font KaTeX_Size1-Regular
758 return "M263," + (601 + extraViniculum + hLinePad) + "c0.7,0,18,39.7,52,119\nc34,79.3,68.167,158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120\nc340,-704.7,510.7,-1060.3,512,-1067\nl" + extraViniculum / 2.084 + " -" + extraViniculum + "\nc4.7,-7.3,11,-11,19,-11\nH40000v" + (40 + extraViniculum) + "H1012.3\ns-271.3,567,-271.3,567c-38.7,80.7,-84,175,-136,283c-52,108,-89.167,185.3,-111.5,232\nc-22.3,46.7,-33.8,70.3,-34.5,71c-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1\ns-109,-253,-109,-253c-72.7,-168,-109.3,-252,-110,-252c-10.7,8,-22,16.7,-34,26\nc-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26s76,-59,76,-59s76,-60,76,-60z\nM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z";
759};
760
761var sqrtSize2 = function sqrtSize2(extraViniculum, hLinePad) {
762 // size2 is from glyph U221A in the font KaTeX_Size2-Regular
763 return "M983 " + (10 + extraViniculum + hLinePad) + "\nl" + extraViniculum / 3.13 + " -" + extraViniculum + "\nc4,-6.7,10,-10,18,-10 H400000v" + (40 + extraViniculum) + "\nH1013.1s-83.4,268,-264.1,840c-180.7,572,-277,876.3,-289,913c-4.7,4.7,-12.7,7,-24,7\ns-12,0,-12,0c-1.3,-3.3,-3.7,-11.7,-7,-25c-35.3,-125.3,-106.7,-373.3,-214,-744\nc-10,12,-21,25,-33,39s-32,39,-32,39c-6,-5.3,-15,-14,-27,-26s25,-30,25,-30\nc26.7,-32.7,52,-63,76,-91s52,-60,52,-60s208,722,208,722\nc56,-175.3,126.3,-397.3,211,-666c84.7,-268.7,153.8,-488.2,207.5,-658.5\nc53.7,-170.3,84.5,-266.8,92.5,-289.5z\nM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z";
764};
765
766var sqrtSize3 = function sqrtSize3(extraViniculum, hLinePad) {
767 // size3 is from glyph U221A in the font KaTeX_Size3-Regular
768 return "M424," + (2398 + extraViniculum + hLinePad) + "\nc-1.3,-0.7,-38.5,-172,-111.5,-514c-73,-342,-109.8,-513.3,-110.5,-514\nc0,-2,-10.7,14.3,-32,49c-4.7,7.3,-9.8,15.7,-15.5,25c-5.7,9.3,-9.8,16,-12.5,20\ns-5,7,-5,7c-4,-3.3,-8.3,-7.7,-13,-13s-13,-13,-13,-13s76,-122,76,-122s77,-121,77,-121\ns209,968,209,968c0,-2,84.7,-361.7,254,-1079c169.3,-717.3,254.7,-1077.7,256,-1081\nl" + extraViniculum / 4.223 + " -" + extraViniculum + "c4,-6.7,10,-10,18,-10 H400000\nv" + (40 + extraViniculum) + "H1014.6\ns-87.3,378.7,-272.6,1166c-185.3,787.3,-279.3,1182.3,-282,1185\nc-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2z M" + (1001 + extraViniculum) + " " + hLinePad + "\nh400000v" + (40 + extraViniculum) + "h-400000z";
769};
770
771var sqrtSize4 = function sqrtSize4(extraViniculum, hLinePad) {
772 // size4 is from glyph U221A in the font KaTeX_Size4-Regular
773 return "M473," + (2713 + extraViniculum + hLinePad) + "\nc339.3,-1799.3,509.3,-2700,510,-2702 l" + extraViniculum / 5.298 + " -" + extraViniculum + "\nc3.3,-7.3,9.3,-11,18,-11 H400000v" + (40 + extraViniculum) + "H1017.7\ns-90.5,478,-276.2,1466c-185.7,988,-279.5,1483,-281.5,1485c-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2c0,-1.3,-5.3,-32,-16,-92c-50.7,-293.3,-119.7,-693.3,-207,-1200\nc0,-1.3,-5.3,8.7,-16,30c-10.7,21.3,-21.3,42.7,-32,64s-16,33,-16,33s-26,-26,-26,-26\ns76,-153,76,-153s77,-151,77,-151c0.7,0.7,35.7,202,105,604c67.3,400.7,102,602.7,104,\n606zM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "H1017.7z";
774};
775
776var phasePath = function phasePath(y) {
777 var x = y / 2; // x coordinate at top of angle
778
779 return "M400000 " + y + " H0 L" + x + " 0 l65 45 L145 " + (y - 80) + " H400000z";
780};
781
782var sqrtTall = function sqrtTall(extraViniculum, hLinePad, viewBoxHeight) {
783 // sqrtTall is from glyph U23B7 in the font KaTeX_Size4-Regular
784 // One path edge has a variable length. It runs vertically from the viniculumn
785 // to a point near (14 units) the bottom of the surd. The viniculum
786 // is normally 40 units thick. So the length of the line in question is:
787 var vertSegment = viewBoxHeight - 54 - hLinePad - extraViniculum;
788 return "M702 " + (extraViniculum + hLinePad) + "H400000" + (40 + extraViniculum) + "\nH742v" + vertSegment + "l-4 4-4 4c-.667.7 -2 1.5-4 2.5s-4.167 1.833-6.5 2.5-5.5 1-9.5 1\nh-12l-28-84c-16.667-52-96.667 -294.333-240-727l-212 -643 -85 170\nc-4-3.333-8.333-7.667-13 -13l-13-13l77-155 77-156c66 199.333 139 419.667\n219 661 l218 661zM702 " + hLinePad + "H400000v" + (40 + extraViniculum) + "H742z";
789};
790
791var sqrtPath = function sqrtPath(size, extraViniculum, viewBoxHeight) {
792 extraViniculum = 1000 * extraViniculum; // Convert from document ems to viewBox.
793
794 var path = "";
795
796 switch (size) {
797 case "sqrtMain":
798 path = sqrtMain(extraViniculum, hLinePad);
799 break;
800
801 case "sqrtSize1":
802 path = sqrtSize1(extraViniculum, hLinePad);
803 break;
804
805 case "sqrtSize2":
806 path = sqrtSize2(extraViniculum, hLinePad);
807 break;
808
809 case "sqrtSize3":
810 path = sqrtSize3(extraViniculum, hLinePad);
811 break;
812
813 case "sqrtSize4":
814 path = sqrtSize4(extraViniculum, hLinePad);
815 break;
816
817 case "sqrtTall":
818 path = sqrtTall(extraViniculum, hLinePad, viewBoxHeight);
819 }
820
821 return path;
822};
823var innerPath = function innerPath(name, height) {
824 // The inner part of stretchy tall delimiters
825 switch (name) {
826 case "\u239C":
827 return "M291 0 H417 V" + height + " H291z M291 0 H417 V" + height + " H291z";
828
829 case "\u2223":
830 return "M145 0 H188 V" + height + " H145z M145 0 H188 V" + height + " H145z";
831
832 case "\u2225":
833 return "M145 0 H188 V" + height + " H145z M145 0 H188 V" + height + " H145z" + ("M367 0 H410 V" + height + " H367z M367 0 H410 V" + height + " H367z");
834
835 case "\u239F":
836 return "M457 0 H583 V" + height + " H457z M457 0 H583 V" + height + " H457z";
837
838 case "\u23A2":
839 return "M319 0 H403 V" + height + " H319z M319 0 H403 V" + height + " H319z";
840
841 case "\u23A5":
842 return "M263 0 H347 V" + height + " H263z M263 0 H347 V" + height + " H263z";
843
844 case "\u23AA":
845 return "M384 0 H504 V" + height + " H384z M384 0 H504 V" + height + " H384z";
846
847 case "\u23D0":
848 return "M312 0 H355 V" + height + " H312z M312 0 H355 V" + height + " H312z";
849
850 case "\u2016":
851 return "M257 0 H300 V" + height + " H257z M257 0 H300 V" + height + " H257z" + ("M478 0 H521 V" + height + " H478z M478 0 H521 V" + height + " H478z");
852
853 default:
854 return "";
855 }
856};
857var path = {
858 // The doubleleftarrow geometry is from glyph U+21D0 in the font KaTeX Main
859 doubleleftarrow: "M262 157\nl10-10c34-36 62.7-77 86-123 3.3-8 5-13.3 5-16 0-5.3-6.7-8-20-8-7.3\n 0-12.2.5-14.5 1.5-2.3 1-4.8 4.5-7.5 10.5-49.3 97.3-121.7 169.3-217 216-28\n 14-57.3 25-88 33-6.7 2-11 3.8-13 5.5-2 1.7-3 4.2-3 7.5s1 5.8 3 7.5\nc2 1.7 6.3 3.5 13 5.5 68 17.3 128.2 47.8 180.5 91.5 52.3 43.7 93.8 96.2 124.5\n 157.5 9.3 8 15.3 12.3 18 13h6c12-.7 18-4 18-10 0-2-1.7-7-5-15-23.3-46-52-87\n-86-123l-10-10h399738v-40H218c328 0 0 0 0 0l-10-8c-26.7-20-65.7-43-117-69 2.7\n-2 6-3.7 10-5 36.7-16 72.3-37.3 107-64l10-8h399782v-40z\nm8 0v40h399730v-40zm0 194v40h399730v-40z",
860 // doublerightarrow is from glyph U+21D2 in font KaTeX Main
861 doublerightarrow: "M399738 392l\n-10 10c-34 36-62.7 77-86 123-3.3 8-5 13.3-5 16 0 5.3 6.7 8 20 8 7.3 0 12.2-.5\n 14.5-1.5 2.3-1 4.8-4.5 7.5-10.5 49.3-97.3 121.7-169.3 217-216 28-14 57.3-25 88\n-33 6.7-2 11-3.8 13-5.5 2-1.7 3-4.2 3-7.5s-1-5.8-3-7.5c-2-1.7-6.3-3.5-13-5.5-68\n-17.3-128.2-47.8-180.5-91.5-52.3-43.7-93.8-96.2-124.5-157.5-9.3-8-15.3-12.3-18\n-13h-6c-12 .7-18 4-18 10 0 2 1.7 7 5 15 23.3 46 52 87 86 123l10 10H0v40h399782\nc-328 0 0 0 0 0l10 8c26.7 20 65.7 43 117 69-2.7 2-6 3.7-10 5-36.7 16-72.3 37.3\n-107 64l-10 8H0v40zM0 157v40h399730v-40zm0 194v40h399730v-40z",
862 // leftarrow is from glyph U+2190 in font KaTeX Main
863 leftarrow: "M400000 241H110l3-3c68.7-52.7 113.7-120\n 135-202 4-14.7 6-23 6-25 0-7.3-7-11-21-11-8 0-13.2.8-15.5 2.5-2.3 1.7-4.2 5.8\n-5.5 12.5-1.3 4.7-2.7 10.3-4 17-12 48.7-34.8 92-68.5 130S65.3 228.3 18 247\nc-10 4-16 7.7-18 11 0 8.7 6 14.3 18 17 47.3 18.7 87.8 47 121.5 85S196 441.3 208\n 490c.7 2 1.3 5 2 9s1.2 6.7 1.5 8c.3 1.3 1 3.3 2 6s2.2 4.5 3.5 5.5c1.3 1 3.3\n 1.8 6 2.5s6 1 10 1c14 0 21-3.7 21-11 0-2-2-10.3-6-25-20-79.3-65-146.7-135-202\n l-3-3h399890zM100 241v40h399900v-40z",
864 // overbrace is from glyphs U+23A9/23A8/23A7 in font KaTeX_Size4-Regular
865 leftbrace: "M6 548l-6-6v-35l6-11c56-104 135.3-181.3 238-232 57.3-28.7 117\n-45 179-50h399577v120H403c-43.3 7-81 15-113 26-100.7 33-179.7 91-237 174-2.7\n 5-6 9-10 13-.7 1-7.3 1-20 1H6z",
866 leftbraceunder: "M0 6l6-6h17c12.688 0 19.313.3 20 1 4 4 7.313 8.3 10 13\n 35.313 51.3 80.813 93.8 136.5 127.5 55.688 33.7 117.188 55.8 184.5 66.5.688\n 0 2 .3 4 1 18.688 2.7 76 4.3 172 5h399450v120H429l-6-1c-124.688-8-235-61.7\n-331-161C60.687 138.7 32.312 99.3 7 54L0 41V6z",
867 // overgroup is from the MnSymbol package (public domain)
868 leftgroup: "M400000 80\nH435C64 80 168.3 229.4 21 260c-5.9 1.2-18 0-18 0-2 0-3-1-3-3v-38C76 61 257 0\n 435 0h399565z",
869 leftgroupunder: "M400000 262\nH435C64 262 168.3 112.6 21 82c-5.9-1.2-18 0-18 0-2 0-3 1-3 3v38c76 158 257 219\n 435 219h399565z",
870 // Harpoons are from glyph U+21BD in font KaTeX Main
871 leftharpoon: "M0 267c.7 5.3 3 10 7 14h399993v-40H93c3.3\n-3.3 10.2-9.5 20.5-18.5s17.8-15.8 22.5-20.5c50.7-52 88-110.3 112-175 4-11.3 5\n-18.3 3-21-1.3-4-7.3-6-18-6-8 0-13 .7-15 2s-4.7 6.7-8 16c-42 98.7-107.3 174.7\n-196 228-6.7 4.7-10.7 8-12 10-1.3 2-2 5.7-2 11zm100-26v40h399900v-40z",
872 leftharpoonplus: "M0 267c.7 5.3 3 10 7 14h399993v-40H93c3.3-3.3 10.2-9.5\n 20.5-18.5s17.8-15.8 22.5-20.5c50.7-52 88-110.3 112-175 4-11.3 5-18.3 3-21-1.3\n-4-7.3-6-18-6-8 0-13 .7-15 2s-4.7 6.7-8 16c-42 98.7-107.3 174.7-196 228-6.7 4.7\n-10.7 8-12 10-1.3 2-2 5.7-2 11zm100-26v40h399900v-40zM0 435v40h400000v-40z\nm0 0v40h400000v-40z",
873 leftharpoondown: "M7 241c-4 4-6.333 8.667-7 14 0 5.333.667 9 2 11s5.333\n 5.333 12 10c90.667 54 156 130 196 228 3.333 10.667 6.333 16.333 9 17 2 .667 5\n 1 9 1h5c10.667 0 16.667-2 18-6 2-2.667 1-9.667-3-21-32-87.333-82.667-157.667\n-152-211l-3-3h399907v-40zM93 281 H400000 v-40L7 241z",
874 leftharpoondownplus: "M7 435c-4 4-6.3 8.7-7 14 0 5.3.7 9 2 11s5.3 5.3 12\n 10c90.7 54 156 130 196 228 3.3 10.7 6.3 16.3 9 17 2 .7 5 1 9 1h5c10.7 0 16.7\n-2 18-6 2-2.7 1-9.7-3-21-32-87.3-82.7-157.7-152-211l-3-3h399907v-40H7zm93 0\nv40h399900v-40zM0 241v40h399900v-40zm0 0v40h399900v-40z",
875 // hook is from glyph U+21A9 in font KaTeX Main
876 lefthook: "M400000 281 H103s-33-11.2-61-33.5S0 197.3 0 164s14.2-61.2 42.5\n-83.5C70.8 58.2 104 47 142 47 c16.7 0 25 6.7 25 20 0 12-8.7 18.7-26 20-40 3.3\n-68.7 15.7-86 37-10 12-15 25.3-15 40 0 22.7 9.8 40.7 29.5 54 19.7 13.3 43.5 21\n 71.5 23h399859zM103 281v-40h399897v40z",
877 leftlinesegment: "M40 281 V428 H0 V94 H40 V241 H400000 v40z\nM40 281 V428 H0 V94 H40 V241 H400000 v40z",
878 leftmapsto: "M40 281 V448H0V74H40V241H400000v40z\nM40 281 V448H0V74H40V241H400000v40z",
879 // tofrom is from glyph U+21C4 in font KaTeX AMS Regular
880 leftToFrom: "M0 147h400000v40H0zm0 214c68 40 115.7 95.7 143 167h22c15.3 0 23\n-.3 23-1 0-1.3-5.3-13.7-16-37-18-35.3-41.3-69-70-101l-7-8h399905v-40H95l7-8\nc28.7-32 52-65.7 70-101 10.7-23.3 16-35.7 16-37 0-.7-7.7-1-23-1h-22C115.7 265.3\n 68 321 0 361zm0-174v-40h399900v40zm100 154v40h399900v-40z",
881 longequal: "M0 50 h400000 v40H0z m0 194h40000v40H0z\nM0 50 h400000 v40H0z m0 194h40000v40H0z",
882 midbrace: "M200428 334\nc-100.7-8.3-195.3-44-280-108-55.3-42-101.7-93-139-153l-9-14c-2.7 4-5.7 8.7-9 14\n-53.3 86.7-123.7 153-211 199-66.7 36-137.3 56.3-212 62H0V214h199568c178.3-11.7\n 311.7-78.3 403-201 6-8 9.7-12 11-12 .7-.7 6.7-1 18-1s17.3.3 18 1c1.3 0 5 4 11\n 12 44.7 59.3 101.3 106.3 170 141s145.3 54.3 229 60h199572v120z",
883 midbraceunder: "M199572 214\nc100.7 8.3 195.3 44 280 108 55.3 42 101.7 93 139 153l9 14c2.7-4 5.7-8.7 9-14\n 53.3-86.7 123.7-153 211-199 66.7-36 137.3-56.3 212-62h199568v120H200432c-178.3\n 11.7-311.7 78.3-403 201-6 8-9.7 12-11 12-.7.7-6.7 1-18 1s-17.3-.3-18-1c-1.3 0\n-5-4-11-12-44.7-59.3-101.3-106.3-170-141s-145.3-54.3-229-60H0V214z",
884 oiintSize1: "M512.6 71.6c272.6 0 320.3 106.8 320.3 178.2 0 70.8-47.7 177.6\n-320.3 177.6S193.1 320.6 193.1 249.8c0-71.4 46.9-178.2 319.5-178.2z\nm368.1 178.2c0-86.4-60.9-215.4-368.1-215.4-306.4 0-367.3 129-367.3 215.4 0 85.8\n60.9 214.8 367.3 214.8 307.2 0 368.1-129 368.1-214.8z",
885 oiintSize2: "M757.8 100.1c384.7 0 451.1 137.6 451.1 230 0 91.3-66.4 228.8\n-451.1 228.8-386.3 0-452.7-137.5-452.7-228.8 0-92.4 66.4-230 452.7-230z\nm502.4 230c0-111.2-82.4-277.2-502.4-277.2s-504 166-504 277.2\nc0 110 84 276 504 276s502.4-166 502.4-276z",
886 oiiintSize1: "M681.4 71.6c408.9 0 480.5 106.8 480.5 178.2 0 70.8-71.6 177.6\n-480.5 177.6S202.1 320.6 202.1 249.8c0-71.4 70.5-178.2 479.3-178.2z\nm525.8 178.2c0-86.4-86.8-215.4-525.7-215.4-437.9 0-524.7 129-524.7 215.4 0\n85.8 86.8 214.8 524.7 214.8 438.9 0 525.7-129 525.7-214.8z",
887 oiiintSize2: "M1021.2 53c603.6 0 707.8 165.8 707.8 277.2 0 110-104.2 275.8\n-707.8 275.8-606 0-710.2-165.8-710.2-275.8C311 218.8 415.2 53 1021.2 53z\nm770.4 277.1c0-131.2-126.4-327.6-770.5-327.6S248.4 198.9 248.4 330.1\nc0 130 128.8 326.4 772.7 326.4s770.5-196.4 770.5-326.4z",
888 rightarrow: "M0 241v40h399891c-47.3 35.3-84 78-110 128\n-16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20\n 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7\n 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85\n-40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n 151.7 139 205zm0 0v40h399900v-40z",
889 rightbrace: "M400000 542l\n-6 6h-17c-12.7 0-19.3-.3-20-1-4-4-7.3-8.3-10-13-35.3-51.3-80.8-93.8-136.5-127.5\ns-117.2-55.8-184.5-66.5c-.7 0-2-.3-4-1-18.7-2.7-76-4.3-172-5H0V214h399571l6 1\nc124.7 8 235 61.7 331 161 31.3 33.3 59.7 72.7 85 118l7 13v35z",
890 rightbraceunder: "M399994 0l6 6v35l-6 11c-56 104-135.3 181.3-238 232-57.3\n 28.7-117 45-179 50H-300V214h399897c43.3-7 81-15 113-26 100.7-33 179.7-91 237\n-174 2.7-5 6-9 10-13 .7-1 7.3-1 20-1h17z",
891 rightgroup: "M0 80h399565c371 0 266.7 149.4 414 180 5.9 1.2 18 0 18 0 2 0\n 3-1 3-3v-38c-76-158-257-219-435-219H0z",
892 rightgroupunder: "M0 262h399565c371 0 266.7-149.4 414-180 5.9-1.2 18 0 18\n 0 2 0 3 1 3 3v38c-76 158-257 219-435 219H0z",
893 rightharpoon: "M0 241v40h399993c4.7-4.7 7-9.3 7-14 0-9.3\n-3.7-15.3-11-18-92.7-56.7-159-133.7-199-231-3.3-9.3-6-14.7-8-16-2-1.3-7-2-15-2\n-10.7 0-16.7 2-18 6-2 2.7-1 9.7 3 21 15.3 42 36.7 81.8 64 119.5 27.3 37.7 58\n 69.2 92 94.5zm0 0v40h399900v-40z",
894 rightharpoonplus: "M0 241v40h399993c4.7-4.7 7-9.3 7-14 0-9.3-3.7-15.3-11\n-18-92.7-56.7-159-133.7-199-231-3.3-9.3-6-14.7-8-16-2-1.3-7-2-15-2-10.7 0-16.7\n 2-18 6-2 2.7-1 9.7 3 21 15.3 42 36.7 81.8 64 119.5 27.3 37.7 58 69.2 92 94.5z\nm0 0v40h399900v-40z m100 194v40h399900v-40zm0 0v40h399900v-40z",
895 rightharpoondown: "M399747 511c0 7.3 6.7 11 20 11 8 0 13-.8 15-2.5s4.7-6.8\n 8-15.5c40-94 99.3-166.3 178-217 13.3-8 20.3-12.3 21-13 5.3-3.3 8.5-5.8 9.5\n-7.5 1-1.7 1.5-5.2 1.5-10.5s-2.3-10.3-7-15H0v40h399908c-34 25.3-64.7 57-92 95\n-27.3 38-48.7 77.7-64 119-3.3 8.7-5 14-5 16zM0 241v40h399900v-40z",
896 rightharpoondownplus: "M399747 705c0 7.3 6.7 11 20 11 8 0 13-.8\n 15-2.5s4.7-6.8 8-15.5c40-94 99.3-166.3 178-217 13.3-8 20.3-12.3 21-13 5.3-3.3\n 8.5-5.8 9.5-7.5 1-1.7 1.5-5.2 1.5-10.5s-2.3-10.3-7-15H0v40h399908c-34 25.3\n-64.7 57-92 95-27.3 38-48.7 77.7-64 119-3.3 8.7-5 14-5 16zM0 435v40h399900v-40z\nm0-194v40h400000v-40zm0 0v40h400000v-40z",
897 righthook: "M399859 241c-764 0 0 0 0 0 40-3.3 68.7-15.7 86-37 10-12 15-25.3\n 15-40 0-22.7-9.8-40.7-29.5-54-19.7-13.3-43.5-21-71.5-23-17.3-1.3-26-8-26-20 0\n-13.3 8.7-20 26-20 38 0 71 11.2 99 33.5 0 0 7 5.6 21 16.7 14 11.2 21 33.5 21\n 66.8s-14 61.2-42 83.5c-28 22.3-61 33.5-99 33.5L0 241z M0 281v-40h399859v40z",
898 rightlinesegment: "M399960 241 V94 h40 V428 h-40 V281 H0 v-40z\nM399960 241 V94 h40 V428 h-40 V281 H0 v-40z",
899 rightToFrom: "M400000 167c-70.7-42-118-97.7-142-167h-23c-15.3 0-23 .3-23\n 1 0 1.3 5.3 13.7 16 37 18 35.3 41.3 69 70 101l7 8H0v40h399905l-7 8c-28.7 32\n-52 65.7-70 101-10.7 23.3-16 35.7-16 37 0 .7 7.7 1 23 1h23c24-69.3 71.3-125 142\n-167z M100 147v40h399900v-40zM0 341v40h399900v-40z",
900 // twoheadleftarrow is from glyph U+219E in font KaTeX AMS Regular
901 twoheadleftarrow: "M0 167c68 40\n 115.7 95.7 143 167h22c15.3 0 23-.3 23-1 0-1.3-5.3-13.7-16-37-18-35.3-41.3-69\n-70-101l-7-8h125l9 7c50.7 39.3 85 86 103 140h46c0-4.7-6.3-18.7-19-42-18-35.3\n-40-67.3-66-96l-9-9h399716v-40H284l9-9c26-28.7 48-60.7 66-96 12.7-23.333 19\n-37.333 19-42h-46c-18 54-52.3 100.7-103 140l-9 7H95l7-8c28.7-32 52-65.7 70-101\n 10.7-23.333 16-35.7 16-37 0-.7-7.7-1-23-1h-22C115.7 71.3 68 127 0 167z",
902 twoheadrightarrow: "M400000 167\nc-68-40-115.7-95.7-143-167h-22c-15.3 0-23 .3-23 1 0 1.3 5.3 13.7 16 37 18 35.3\n 41.3 69 70 101l7 8h-125l-9-7c-50.7-39.3-85-86-103-140h-46c0 4.7 6.3 18.7 19 42\n 18 35.3 40 67.3 66 96l9 9H0v40h399716l-9 9c-26 28.7-48 60.7-66 96-12.7 23.333\n-19 37.333-19 42h46c18-54 52.3-100.7 103-140l9-7h125l-7 8c-28.7 32-52 65.7-70\n 101-10.7 23.333-16 35.7-16 37 0 .7 7.7 1 23 1h22c27.3-71.3 75-127 143-167z",
903 // tilde1 is a modified version of a glyph from the MnSymbol package
904 tilde1: "M200 55.538c-77 0-168 73.953-177 73.953-3 0-7\n-2.175-9-5.437L2 97c-1-2-2-4-2-6 0-4 2-7 5-9l20-12C116 12 171 0 207 0c86 0\n 114 68 191 68 78 0 168-68 177-68 4 0 7 2 9 5l12 19c1 2.175 2 4.35 2 6.525 0\n 4.35-2 7.613-5 9.788l-19 13.05c-92 63.077-116.937 75.308-183 76.128\n-68.267.847-113-73.952-191-73.952z",
905 // ditto tilde2, tilde3, & tilde4
906 tilde2: "M344 55.266c-142 0-300.638 81.316-311.5 86.418\n-8.01 3.762-22.5 10.91-23.5 5.562L1 120c-1-2-1-3-1-4 0-5 3-9 8-10l18.4-9C160.9\n 31.9 283 0 358 0c148 0 188 122 331 122s314-97 326-97c4 0 8 2 10 7l7 21.114\nc1 2.14 1 3.21 1 4.28 0 5.347-3 9.626-7 10.696l-22.3 12.622C852.6 158.372 751\n 181.476 676 181.476c-149 0-189-126.21-332-126.21z",
907 tilde3: "M786 59C457 59 32 175.242 13 175.242c-6 0-10-3.457\n-11-10.37L.15 138c-1-7 3-12 10-13l19.2-6.4C378.4 40.7 634.3 0 804.3 0c337 0\n 411.8 157 746.8 157 328 0 754-112 773-112 5 0 10 3 11 9l1 14.075c1 8.066-.697\n 16.595-6.697 17.492l-21.052 7.31c-367.9 98.146-609.15 122.696-778.15 122.696\n -338 0-409-156.573-744-156.573z",
908 tilde4: "M786 58C457 58 32 177.487 13 177.487c-6 0-10-3.345\n-11-10.035L.15 143c-1-7 3-12 10-13l22-6.7C381.2 35 637.15 0 807.15 0c337 0 409\n 177 744 177 328 0 754-127 773-127 5 0 10 3 11 9l1 14.794c1 7.805-3 13.38-9\n 14.495l-20.7 5.574c-366.85 99.79-607.3 139.372-776.3 139.372-338 0-409\n -175.236-744-175.236z",
909 // vec is from glyph U+20D7 in font KaTeX Main
910 vec: "M377 20c0-5.333 1.833-10 5.5-14S391 0 397 0c4.667 0 8.667 1.667 12 5\n3.333 2.667 6.667 9 10 19 6.667 24.667 20.333 43.667 41 57 7.333 4.667 11\n10.667 11 18 0 6-1 10-3 12s-6.667 5-14 9c-28.667 14.667-53.667 35.667-75 63\n-1.333 1.333-3.167 3.5-5.5 6.5s-4 4.833-5 5.5c-1 .667-2.5 1.333-4.5 2s-4.333 1\n-7 1c-4.667 0-9.167-1.833-13.5-5.5S337 184 337 178c0-12.667 15.667-32.333 47-59\nH213l-171-1c-8.667-6-13-12.333-13-19 0-4.667 4.333-11.333 13-20h359\nc-16-25.333-24-45-24-59z",
911 // widehat1 is a modified version of a glyph from the MnSymbol package
912 widehat1: "M529 0h5l519 115c5 1 9 5 9 10 0 1-1 2-1 3l-4 22\nc-1 5-5 9-11 9h-2L532 67 19 159h-2c-5 0-9-4-11-9l-5-22c-1-6 2-12 8-13z",
913 // ditto widehat2, widehat3, & widehat4
914 widehat2: "M1181 0h2l1171 176c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 220h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
915 widehat3: "M1181 0h2l1171 236c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 280h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
916 widehat4: "M1181 0h2l1171 296c6 0 10 5 10 11l-2 23c-1 6-5 10\n-11 10h-1L1182 67 15 340h-1c-6 0-10-4-11-10l-2-23c-1-6 4-11 10-11z",
917 // widecheck paths are all inverted versions of widehat
918 widecheck1: "M529,159h5l519,-115c5,-1,9,-5,9,-10c0,-1,-1,-2,-1,-3l-4,-22c-1,\n-5,-5,-9,-11,-9h-2l-512,92l-513,-92h-2c-5,0,-9,4,-11,9l-5,22c-1,6,2,12,8,13z",
919 widecheck2: "M1181,220h2l1171,-176c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,153l-1167,-153h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
920 widecheck3: "M1181,280h2l1171,-236c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,213l-1167,-213h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
921 widecheck4: "M1181,340h2l1171,-296c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,273l-1167,-273h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z",
922 // The next ten paths support reaction arrows from the mhchem package.
923 // Arrows for \ce{<-->} are offset from xAxis by 0.22ex, per mhchem in LaTeX
924 // baraboveleftarrow is mostly from from glyph U+2190 in font KaTeX Main
925 baraboveleftarrow: "M400000 620h-399890l3 -3c68.7 -52.7 113.7 -120 135 -202\nc4 -14.7 6 -23 6 -25c0 -7.3 -7 -11 -21 -11c-8 0 -13.2 0.8 -15.5 2.5\nc-2.3 1.7 -4.2 5.8 -5.5 12.5c-1.3 4.7 -2.7 10.3 -4 17c-12 48.7 -34.8 92 -68.5 130\ns-74.2 66.3 -121.5 85c-10 4 -16 7.7 -18 11c0 8.7 6 14.3 18 17c47.3 18.7 87.8 47\n121.5 85s56.5 81.3 68.5 130c0.7 2 1.3 5 2 9s1.2 6.7 1.5 8c0.3 1.3 1 3.3 2 6\ns2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21 -3.7 21 -11\nc0 -2 -2 -10.3 -6 -25c-20 -79.3 -65 -146.7 -135 -202l-3 -3h399890z\nM100 620v40h399900v-40z M0 241v40h399900v-40zM0 241v40h399900v-40z",
926 // rightarrowabovebar is mostly from glyph U+2192, KaTeX Main
927 rightarrowabovebar: "M0 241v40h399891c-47.3 35.3-84 78-110 128-16.7 32\n-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0\n13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39\n-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5\n-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n151.7 139 205zm96 379h399894v40H0zm0 0h399904v40H0z",
928 // The short left harpoon has 0.5em (i.e. 500 units) kern on the left end.
929 // Ref from mhchem.sty: \rlap{\raisebox{-.22ex}{$\kern0.5em
930 baraboveshortleftharpoon: "M507,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17\nc2,0.7,5,1,9,1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21\nc-32,-87.3,-82.7,-157.7,-152,-211c0,0,-3,-3,-3,-3l399351,0l0,-40\nc-398570,0,-399437,0,-399437,0z M593 435 v40 H399500 v-40z\nM0 281 v-40 H399908 v40z M0 281 v-40 H399908 v40z",
931 rightharpoonaboveshortbar: "M0,241 l0,40c399126,0,399993,0,399993,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM0 241 v40 H399908 v-40z M0 475 v-40 H399500 v40z M0 475 v-40 H399500 v40z",
932 shortbaraboveleftharpoon: "M7,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17c2,0.7,5,1,9,\n1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21c-32,-87.3,-82.7,-157.7,\n-152,-211c0,0,-3,-3,-3,-3l399907,0l0,-40c-399126,0,-399993,0,-399993,0z\nM93 435 v40 H400000 v-40z M500 241 v40 H400000 v-40z M500 241 v40 H400000 v-40z",
933 shortrightharpoonabovebar: "M53,241l0,40c398570,0,399437,0,399437,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM500 241 v40 H399408 v-40z M500 435 v40 H400000 v-40z"
934};
935;// CONCATENATED MODULE: ./src/tree.js
936
937
938/**
939 * This node represents a document fragment, which contains elements, but when
940 * placed into the DOM doesn't have any representation itself. It only contains
941 * children and doesn't have any DOM node properties.
942 */
943var DocumentFragment = /*#__PURE__*/function () {
944 // HtmlDomNode
945 // Never used; needed for satisfying interface.
946 function DocumentFragment(children) {
947 this.children = void 0;
948 this.classes = void 0;
949 this.height = void 0;
950 this.depth = void 0;
951 this.maxFontSize = void 0;
952 this.style = void 0;
953 this.children = children;
954 this.classes = [];
955 this.height = 0;
956 this.depth = 0;
957 this.maxFontSize = 0;
958 this.style = {};
959 }
960
961 var _proto = DocumentFragment.prototype;
962
963 _proto.hasClass = function hasClass(className) {
964 return utils.contains(this.classes, className);
965 }
966 /** Convert the fragment into a node. */
967 ;
968
969 _proto.toNode = function toNode() {
970 var frag = document.createDocumentFragment();
971
972 for (var i = 0; i < this.children.length; i++) {
973 frag.appendChild(this.children[i].toNode());
974 }
975
976 return frag;
977 }
978 /** Convert the fragment into HTML markup. */
979 ;
980
981 _proto.toMarkup = function toMarkup() {
982 var markup = ""; // Simply concatenate the markup for the children together.
983
984 for (var i = 0; i < this.children.length; i++) {
985 markup += this.children[i].toMarkup();
986 }
987
988 return markup;
989 }
990 /**
991 * Converts the math node into a string, similar to innerText. Applies to
992 * MathDomNode's only.
993 */
994 ;
995
996 _proto.toText = function toText() {
997 // To avoid this, we would subclass documentFragment separately for
998 // MathML, but polyfills for subclassing is expensive per PR 1469.
999 // $FlowFixMe: Only works for ChildType = MathDomNode.
1000 var toText = function toText(child) {
1001 return child.toText();
1002 };
1003
1004 return this.children.map(toText).join("");
1005 };
1006
1007 return DocumentFragment;
1008}();
1009;// CONCATENATED MODULE: ./src/fontMetricsData.js
1010// This file is GENERATED by buildMetrics.sh. DO NOT MODIFY.
1011/* harmony default export */ var fontMetricsData = ({
1012 "AMS-Regular": {
1013 "32": [0, 0, 0, 0, 0.25],
1014 "65": [0, 0.68889, 0, 0, 0.72222],
1015 "66": [0, 0.68889, 0, 0, 0.66667],
1016 "67": [0, 0.68889, 0, 0, 0.72222],
1017 "68": [0, 0.68889, 0, 0, 0.72222],
1018 "69": [0, 0.68889, 0, 0, 0.66667],
1019 "70": [0, 0.68889, 0, 0, 0.61111],
1020 "71": [0, 0.68889, 0, 0, 0.77778],
1021 "72": [0, 0.68889, 0, 0, 0.77778],
1022 "73": [0, 0.68889, 0, 0, 0.38889],
1023 "74": [0.16667, 0.68889, 0, 0, 0.5],
1024 "75": [0, 0.68889, 0, 0, 0.77778],
1025 "76": [0, 0.68889, 0, 0, 0.66667],
1026 "77": [0, 0.68889, 0, 0, 0.94445],
1027 "78": [0, 0.68889, 0, 0, 0.72222],
1028 "79": [0.16667, 0.68889, 0, 0, 0.77778],
1029 "80": [0, 0.68889, 0, 0, 0.61111],
1030 "81": [0.16667, 0.68889, 0, 0, 0.77778],
1031 "82": [0, 0.68889, 0, 0, 0.72222],
1032 "83": [0, 0.68889, 0, 0, 0.55556],
1033 "84": [0, 0.68889, 0, 0, 0.66667],
1034 "85": [0, 0.68889, 0, 0, 0.72222],
1035 "86": [0, 0.68889, 0, 0, 0.72222],
1036 "87": [0, 0.68889, 0, 0, 1.0],
1037 "88": [0, 0.68889, 0, 0, 0.72222],
1038 "89": [0, 0.68889, 0, 0, 0.72222],
1039 "90": [0, 0.68889, 0, 0, 0.66667],
1040 "107": [0, 0.68889, 0, 0, 0.55556],
1041 "160": [0, 0, 0, 0, 0.25],
1042 "165": [0, 0.675, 0.025, 0, 0.75],
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2931 "9116": [1e-05, 0.6, 0, 0, 0.875],
2932 "9117": [0.64502, 1.155, 0, 0, 0.875],
2933 "9118": [0.64502, 1.155, 0, 0, 0.875],
2934 "9119": [1e-05, 0.6, 0, 0, 0.875],
2935 "9120": [0.64502, 1.155, 0, 0, 0.875],
2936 "9121": [0.64502, 1.155, 0, 0, 0.66667],
2937 "9122": [-0.00099, 0.601, 0, 0, 0.66667],
2938 "9123": [0.64502, 1.155, 0, 0, 0.66667],
2939 "9124": [0.64502, 1.155, 0, 0, 0.66667],
2940 "9125": [-0.00099, 0.601, 0, 0, 0.66667],
2941 "9126": [0.64502, 1.155, 0, 0, 0.66667],
2942 "9127": [1e-05, 0.9, 0, 0, 0.88889],
2943 "9128": [0.65002, 1.15, 0, 0, 0.88889],
2944 "9129": [0.90001, 0, 0, 0, 0.88889],
2945 "9130": [0, 0.3, 0, 0, 0.88889],
2946 "9131": [1e-05, 0.9, 0, 0, 0.88889],
2947 "9132": [0.65002, 1.15, 0, 0, 0.88889],
2948 "9133": [0.90001, 0, 0, 0, 0.88889],
2949 "9143": [0.88502, 0.915, 0, 0, 1.05556],
2950 "10216": [1.25003, 1.75, 0, 0, 0.80556],
2951 "10217": [1.25003, 1.75, 0, 0, 0.80556],
2952 "57344": [-0.00499, 0.605, 0, 0, 1.05556],
2953 "57345": [-0.00499, 0.605, 0, 0, 1.05556],
2954 "57680": [0, 0.12, 0, 0, 0.45],
2955 "57681": [0, 0.12, 0, 0, 0.45],
2956 "57682": [0, 0.12, 0, 0, 0.45],
2957 "57683": [0, 0.12, 0, 0, 0.45]
2958 },
2959 "Typewriter-Regular": {
2960 "32": [0, 0, 0, 0, 0.525],
2961 "33": [0, 0.61111, 0, 0, 0.525],
2962 "34": [0, 0.61111, 0, 0, 0.525],
2963 "35": [0, 0.61111, 0, 0, 0.525],
2964 "36": [0.08333, 0.69444, 0, 0, 0.525],
2965 "37": [0.08333, 0.69444, 0, 0, 0.525],
2966 "38": [0, 0.61111, 0, 0, 0.525],
2967 "39": [0, 0.61111, 0, 0, 0.525],
2968 "40": [0.08333, 0.69444, 0, 0, 0.525],
2969 "41": [0.08333, 0.69444, 0, 0, 0.525],
2970 "42": [0, 0.52083, 0, 0, 0.525],
2971 "43": [-0.08056, 0.53055, 0, 0, 0.525],
2972 "44": [0.13889, 0.125, 0, 0, 0.525],
2973 "45": [-0.08056, 0.53055, 0, 0, 0.525],
2974 "46": [0, 0.125, 0, 0, 0.525],
2975 "47": [0.08333, 0.69444, 0, 0, 0.525],
2976 "48": [0, 0.61111, 0, 0, 0.525],
2977 "49": [0, 0.61111, 0, 0, 0.525],
2978 "50": [0, 0.61111, 0, 0, 0.525],
2979 "51": [0, 0.61111, 0, 0, 0.525],
2980 "52": [0, 0.61111, 0, 0, 0.525],
2981 "53": [0, 0.61111, 0, 0, 0.525],
2982 "54": [0, 0.61111, 0, 0, 0.525],
2983 "55": [0, 0.61111, 0, 0, 0.525],
2984 "56": [0, 0.61111, 0, 0, 0.525],
2985 "57": [0, 0.61111, 0, 0, 0.525],
2986 "58": [0, 0.43056, 0, 0, 0.525],
2987 "59": [0.13889, 0.43056, 0, 0, 0.525],
2988 "60": [-0.05556, 0.55556, 0, 0, 0.525],
2989 "61": [-0.19549, 0.41562, 0, 0, 0.525],
2990 "62": [-0.05556, 0.55556, 0, 0, 0.525],
2991 "63": [0, 0.61111, 0, 0, 0.525],
2992 "64": [0, 0.61111, 0, 0, 0.525],
2993 "65": [0, 0.61111, 0, 0, 0.525],
2994 "66": [0, 0.61111, 0, 0, 0.525],
2995 "67": [0, 0.61111, 0, 0, 0.525],
2996 "68": [0, 0.61111, 0, 0, 0.525],
2997 "69": [0, 0.61111, 0, 0, 0.525],
2998 "70": [0, 0.61111, 0, 0, 0.525],
2999 "71": [0, 0.61111, 0, 0, 0.525],
3000 "72": [0, 0.61111, 0, 0, 0.525],
3001 "73": [0, 0.61111, 0, 0, 0.525],
3002 "74": [0, 0.61111, 0, 0, 0.525],
3003 "75": [0, 0.61111, 0, 0, 0.525],
3004 "76": [0, 0.61111, 0, 0, 0.525],
3005 "77": [0, 0.61111, 0, 0, 0.525],
3006 "78": [0, 0.61111, 0, 0, 0.525],
3007 "79": [0, 0.61111, 0, 0, 0.525],
3008 "80": [0, 0.61111, 0, 0, 0.525],
3009 "81": [0.13889, 0.61111, 0, 0, 0.525],
3010 "82": [0, 0.61111, 0, 0, 0.525],
3011 "83": [0, 0.61111, 0, 0, 0.525],
3012 "84": [0, 0.61111, 0, 0, 0.525],
3013 "85": [0, 0.61111, 0, 0, 0.525],
3014 "86": [0, 0.61111, 0, 0, 0.525],
3015 "87": [0, 0.61111, 0, 0, 0.525],
3016 "88": [0, 0.61111, 0, 0, 0.525],
3017 "89": [0, 0.61111, 0, 0, 0.525],
3018 "90": [0, 0.61111, 0, 0, 0.525],
3019 "91": [0.08333, 0.69444, 0, 0, 0.525],
3020 "92": [0.08333, 0.69444, 0, 0, 0.525],
3021 "93": [0.08333, 0.69444, 0, 0, 0.525],
3022 "94": [0, 0.61111, 0, 0, 0.525],
3023 "95": [0.09514, 0, 0, 0, 0.525],
3024 "96": [0, 0.61111, 0, 0, 0.525],
3025 "97": [0, 0.43056, 0, 0, 0.525],
3026 "98": [0, 0.61111, 0, 0, 0.525],
3027 "99": [0, 0.43056, 0, 0, 0.525],
3028 "100": [0, 0.61111, 0, 0, 0.525],
3029 "101": [0, 0.43056, 0, 0, 0.525],
3030 "102": [0, 0.61111, 0, 0, 0.525],
3031 "103": [0.22222, 0.43056, 0, 0, 0.525],
3032 "104": [0, 0.61111, 0, 0, 0.525],
3033 "105": [0, 0.61111, 0, 0, 0.525],
3034 "106": [0.22222, 0.61111, 0, 0, 0.525],
3035 "107": [0, 0.61111, 0, 0, 0.525],
3036 "108": [0, 0.61111, 0, 0, 0.525],
3037 "109": [0, 0.43056, 0, 0, 0.525],
3038 "110": [0, 0.43056, 0, 0, 0.525],
3039 "111": [0, 0.43056, 0, 0, 0.525],
3040 "112": [0.22222, 0.43056, 0, 0, 0.525],
3041 "113": [0.22222, 0.43056, 0, 0, 0.525],
3042 "114": [0, 0.43056, 0, 0, 0.525],
3043 "115": [0, 0.43056, 0, 0, 0.525],
3044 "116": [0, 0.55358, 0, 0, 0.525],
3045 "117": [0, 0.43056, 0, 0, 0.525],
3046 "118": [0, 0.43056, 0, 0, 0.525],
3047 "119": [0, 0.43056, 0, 0, 0.525],
3048 "120": [0, 0.43056, 0, 0, 0.525],
3049 "121": [0.22222, 0.43056, 0, 0, 0.525],
3050 "122": [0, 0.43056, 0, 0, 0.525],
3051 "123": [0.08333, 0.69444, 0, 0, 0.525],
3052 "124": [0.08333, 0.69444, 0, 0, 0.525],
3053 "125": [0.08333, 0.69444, 0, 0, 0.525],
3054 "126": [0, 0.61111, 0, 0, 0.525],
3055 "127": [0, 0.61111, 0, 0, 0.525],
3056 "160": [0, 0, 0, 0, 0.525],
3057 "176": [0, 0.61111, 0, 0, 0.525],
3058 "184": [0.19445, 0, 0, 0, 0.525],
3059 "305": [0, 0.43056, 0, 0, 0.525],
3060 "567": [0.22222, 0.43056, 0, 0, 0.525],
3061 "711": [0, 0.56597, 0, 0, 0.525],
3062 "713": [0, 0.56555, 0, 0, 0.525],
3063 "714": [0, 0.61111, 0, 0, 0.525],
3064 "715": [0, 0.61111, 0, 0, 0.525],
3065 "728": [0, 0.61111, 0, 0, 0.525],
3066 "730": [0, 0.61111, 0, 0, 0.525],
3067 "770": [0, 0.61111, 0, 0, 0.525],
3068 "771": [0, 0.61111, 0, 0, 0.525],
3069 "776": [0, 0.61111, 0, 0, 0.525],
3070 "915": [0, 0.61111, 0, 0, 0.525],
3071 "916": [0, 0.61111, 0, 0, 0.525],
3072 "920": [0, 0.61111, 0, 0, 0.525],
3073 "923": [0, 0.61111, 0, 0, 0.525],
3074 "926": [0, 0.61111, 0, 0, 0.525],
3075 "928": [0, 0.61111, 0, 0, 0.525],
3076 "931": [0, 0.61111, 0, 0, 0.525],
3077 "933": [0, 0.61111, 0, 0, 0.525],
3078 "934": [0, 0.61111, 0, 0, 0.525],
3079 "936": [0, 0.61111, 0, 0, 0.525],
3080 "937": [0, 0.61111, 0, 0, 0.525],
3081 "8216": [0, 0.61111, 0, 0, 0.525],
3082 "8217": [0, 0.61111, 0, 0, 0.525],
3083 "8242": [0, 0.61111, 0, 0, 0.525],
3084 "9251": [0.11111, 0.21944, 0, 0, 0.525]
3085 }
3086});
3087;// CONCATENATED MODULE: ./src/fontMetrics.js
3088
3089
3090/**
3091 * This file contains metrics regarding fonts and individual symbols. The sigma
3092 * and xi variables, as well as the metricMap map contain data extracted from
3093 * TeX, TeX font metrics, and the TTF files. These data are then exposed via the
3094 * `metrics` variable and the getCharacterMetrics function.
3095 */
3096// In TeX, there are actually three sets of dimensions, one for each of
3097// textstyle (size index 5 and higher: >=9pt), scriptstyle (size index 3 and 4:
3098// 7-8pt), and scriptscriptstyle (size index 1 and 2: 5-6pt). These are
3099// provided in the the arrays below, in that order.
3100//
3101// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respsectively.
3102// This was determined by running the following script:
3103//
3104// latex -interaction=nonstopmode \
3105// '\documentclass{article}\usepackage{amsmath}\begin{document}' \
3106// '$a$ \expandafter\show\the\textfont2' \
3107// '\expandafter\show\the\scriptfont2' \
3108// '\expandafter\show\the\scriptscriptfont2' \
3109// '\stop'
3110//
3111// The metrics themselves were retreived using the following commands:
3112//
3113// tftopl cmsy10
3114// tftopl cmsy7
3115// tftopl cmsy5
3116//
3117// The output of each of these commands is quite lengthy. The only part we
3118// care about is the FONTDIMEN section. Each value is measured in EMs.
3119var sigmasAndXis = {
3120 slant: [0.250, 0.250, 0.250],
3121 // sigma1
3122 space: [0.000, 0.000, 0.000],
3123 // sigma2
3124 stretch: [0.000, 0.000, 0.000],
3125 // sigma3
3126 shrink: [0.000, 0.000, 0.000],
3127 // sigma4
3128 xHeight: [0.431, 0.431, 0.431],
3129 // sigma5
3130 quad: [1.000, 1.171, 1.472],
3131 // sigma6
3132 extraSpace: [0.000, 0.000, 0.000],
3133 // sigma7
3134 num1: [0.677, 0.732, 0.925],
3135 // sigma8
3136 num2: [0.394, 0.384, 0.387],
3137 // sigma9
3138 num3: [0.444, 0.471, 0.504],
3139 // sigma10
3140 denom1: [0.686, 0.752, 1.025],
3141 // sigma11
3142 denom2: [0.345, 0.344, 0.532],
3143 // sigma12
3144 sup1: [0.413, 0.503, 0.504],
3145 // sigma13
3146 sup2: [0.363, 0.431, 0.404],
3147 // sigma14
3148 sup3: [0.289, 0.286, 0.294],
3149 // sigma15
3150 sub1: [0.150, 0.143, 0.200],
3151 // sigma16
3152 sub2: [0.247, 0.286, 0.400],
3153 // sigma17
3154 supDrop: [0.386, 0.353, 0.494],
3155 // sigma18
3156 subDrop: [0.050, 0.071, 0.100],
3157 // sigma19
3158 delim1: [2.390, 1.700, 1.980],
3159 // sigma20
3160 delim2: [1.010, 1.157, 1.420],
3161 // sigma21
3162 axisHeight: [0.250, 0.250, 0.250],
3163 // sigma22
3164 // These font metrics are extracted from TeX by using tftopl on cmex10.tfm;
3165 // they correspond to the font parameters of the extension fonts (family 3).
3166 // See the TeXbook, page 441. In AMSTeX, the extension fonts scale; to
3167 // match cmex7, we'd use cmex7.tfm values for script and scriptscript
3168 // values.
3169 defaultRuleThickness: [0.04, 0.049, 0.049],
3170 // xi8; cmex7: 0.049
3171 bigOpSpacing1: [0.111, 0.111, 0.111],
3172 // xi9
3173 bigOpSpacing2: [0.166, 0.166, 0.166],
3174 // xi10
3175 bigOpSpacing3: [0.2, 0.2, 0.2],
3176 // xi11
3177 bigOpSpacing4: [0.6, 0.611, 0.611],
3178 // xi12; cmex7: 0.611
3179 bigOpSpacing5: [0.1, 0.143, 0.143],
3180 // xi13; cmex7: 0.143
3181 // The \sqrt rule width is taken from the height of the surd character.
3182 // Since we use the same font at all sizes, this thickness doesn't scale.
3183 sqrtRuleThickness: [0.04, 0.04, 0.04],
3184 // This value determines how large a pt is, for metrics which are defined
3185 // in terms of pts.
3186 // This value is also used in katex.less; if you change it make sure the
3187 // values match.
3188 ptPerEm: [10.0, 10.0, 10.0],
3189 // The space between adjacent `|` columns in an array definition. From
3190 // `\showthe\doublerulesep` in LaTeX. Equals 2.0 / ptPerEm.
3191 doubleRuleSep: [0.2, 0.2, 0.2],
3192 // The width of separator lines in {array} environments. From
3193 // `\showthe\arrayrulewidth` in LaTeX. Equals 0.4 / ptPerEm.
3194 arrayRuleWidth: [0.04, 0.04, 0.04],
3195 // Two values from LaTeX source2e:
3196 fboxsep: [0.3, 0.3, 0.3],
3197 // 3 pt / ptPerEm
3198 fboxrule: [0.04, 0.04, 0.04] // 0.4 pt / ptPerEm
3199
3200}; // This map contains a mapping from font name and character code to character
3201// metrics, including height, depth, italic correction, and skew (kern from the
3202// character to the corresponding \skewchar)
3203// This map is generated via `make metrics`. It should not be changed manually.
3204
3205 // These are very rough approximations. We default to Times New Roman which
3206// should have Latin-1 and Cyrillic characters, but may not depending on the
3207// operating system. The metrics do not account for extra height from the
3208// accents. In the case of Cyrillic characters which have both ascenders and
3209// descenders we prefer approximations with ascenders, primarily to prevent
3210// the fraction bar or root line from intersecting the glyph.
3211// TODO(kevinb) allow union of multiple glyph metrics for better accuracy.
3212
3213var extraCharacterMap = {
3214 // Latin-1
3215 'Å': 'A',
3216 'Ð': 'D',
3217 'Þ': 'o',
3218 'å': 'a',
3219 'ð': 'd',
3220 'þ': 'o',
3221 // Cyrillic
3222 'А': 'A',
3223 'Б': 'B',
3224 'В': 'B',
3225 'Г': 'F',
3226 'Д': 'A',
3227 'Е': 'E',
3228 'Ж': 'K',
3229 'З': '3',
3230 'И': 'N',
3231 'Й': 'N',
3232 'К': 'K',
3233 'Л': 'N',
3234 'М': 'M',
3235 'Н': 'H',
3236 'О': 'O',
3237 'П': 'N',
3238 'Р': 'P',
3239 'С': 'C',
3240 'Т': 'T',
3241 'У': 'y',
3242 'Ф': 'O',
3243 'Х': 'X',
3244 'Ц': 'U',
3245 'Ч': 'h',
3246 'Ш': 'W',
3247 'Щ': 'W',
3248 'Ъ': 'B',
3249 'Ы': 'X',
3250 'Ь': 'B',
3251 'Э': '3',
3252 'Ю': 'X',
3253 'Я': 'R',
3254 'а': 'a',
3255 'б': 'b',
3256 'в': 'a',
3257 'г': 'r',
3258 'д': 'y',
3259 'е': 'e',
3260 'ж': 'm',
3261 'з': 'e',
3262 'и': 'n',
3263 'й': 'n',
3264 'к': 'n',
3265 'л': 'n',
3266 'м': 'm',
3267 'н': 'n',
3268 'о': 'o',
3269 'п': 'n',
3270 'р': 'p',
3271 'с': 'c',
3272 'т': 'o',
3273 'у': 'y',
3274 'ф': 'b',
3275 'х': 'x',
3276 'ц': 'n',
3277 'ч': 'n',
3278 'ш': 'w',
3279 'щ': 'w',
3280 'ъ': 'a',
3281 'ы': 'm',
3282 'ь': 'a',
3283 'э': 'e',
3284 'ю': 'm',
3285 'я': 'r'
3286};
3287
3288/**
3289 * This function adds new font metrics to default metricMap
3290 * It can also override existing metrics
3291 */
3292function setFontMetrics(fontName, metrics) {
3293 fontMetricsData[fontName] = metrics;
3294}
3295/**
3296 * This function is a convenience function for looking up information in the
3297 * metricMap table. It takes a character as a string, and a font.
3298 *
3299 * Note: the `width` property may be undefined if fontMetricsData.js wasn't
3300 * built using `Make extended_metrics`.
3301 */
3302
3303function getCharacterMetrics(character, font, mode) {
3304 if (!fontMetricsData[font]) {
3305 throw new Error("Font metrics not found for font: " + font + ".");
3306 }
3307
3308 var ch = character.charCodeAt(0);
3309 var metrics = fontMetricsData[font][ch];
3310
3311 if (!metrics && character[0] in extraCharacterMap) {
3312 ch = extraCharacterMap[character[0]].charCodeAt(0);
3313 metrics = fontMetricsData[font][ch];
3314 }
3315
3316 if (!metrics && mode === 'text') {
3317 // We don't typically have font metrics for Asian scripts.
3318 // But since we support them in text mode, we need to return
3319 // some sort of metrics.
3320 // So if the character is in a script we support but we
3321 // don't have metrics for it, just use the metrics for
3322 // the Latin capital letter M. This is close enough because
3323 // we (currently) only care about the height of the glpyh
3324 // not its width.
3325 if (supportedCodepoint(ch)) {
3326 metrics = fontMetricsData[font][77]; // 77 is the charcode for 'M'
3327 }
3328 }
3329
3330 if (metrics) {
3331 return {
3332 depth: metrics[0],
3333 height: metrics[1],
3334 italic: metrics[2],
3335 skew: metrics[3],
3336 width: metrics[4]
3337 };
3338 }
3339}
3340var fontMetricsBySizeIndex = {};
3341/**
3342 * Get the font metrics for a given size.
3343 */
3344
3345function getGlobalMetrics(size) {
3346 var sizeIndex;
3347
3348 if (size >= 5) {
3349 sizeIndex = 0;
3350 } else if (size >= 3) {
3351 sizeIndex = 1;
3352 } else {
3353 sizeIndex = 2;
3354 }
3355
3356 if (!fontMetricsBySizeIndex[sizeIndex]) {
3357 var metrics = fontMetricsBySizeIndex[sizeIndex] = {
3358 cssEmPerMu: sigmasAndXis.quad[sizeIndex] / 18
3359 };
3360
3361 for (var key in sigmasAndXis) {
3362 if (sigmasAndXis.hasOwnProperty(key)) {
3363 metrics[key] = sigmasAndXis[key][sizeIndex];
3364 }
3365 }
3366 }
3367
3368 return fontMetricsBySizeIndex[sizeIndex];
3369}
3370;// CONCATENATED MODULE: ./src/Options.js
3371/**
3372 * This file contains information about the options that the Parser carries
3373 * around with it while parsing. Data is held in an `Options` object, and when
3374 * recursing, a new `Options` object can be created with the `.with*` and
3375 * `.reset` functions.
3376 */
3377
3378var sizeStyleMap = [// Each element contains [textsize, scriptsize, scriptscriptsize].
3379// The size mappings are taken from TeX with \normalsize=10pt.
3380[1, 1, 1], // size1: [5, 5, 5] \tiny
3381[2, 1, 1], // size2: [6, 5, 5]
3382[3, 1, 1], // size3: [7, 5, 5] \scriptsize
3383[4, 2, 1], // size4: [8, 6, 5] \footnotesize
3384[5, 2, 1], // size5: [9, 6, 5] \small
3385[6, 3, 1], // size6: [10, 7, 5] \normalsize
3386[7, 4, 2], // size7: [12, 8, 6] \large
3387[8, 6, 3], // size8: [14.4, 10, 7] \Large
3388[9, 7, 6], // size9: [17.28, 12, 10] \LARGE
3389[10, 8, 7], // size10: [20.74, 14.4, 12] \huge
3390[11, 10, 9] // size11: [24.88, 20.74, 17.28] \HUGE
3391];
3392var sizeMultipliers = [// fontMetrics.js:getGlobalMetrics also uses size indexes, so if
3393// you change size indexes, change that function.
33940.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.44, 1.728, 2.074, 2.488];
3395
3396var sizeAtStyle = function sizeAtStyle(size, style) {
3397 return style.size < 2 ? size : sizeStyleMap[size - 1][style.size - 1];
3398}; // In these types, "" (empty string) means "no change".
3399
3400
3401/**
3402 * This is the main options class. It contains the current style, size, color,
3403 * and font.
3404 *
3405 * Options objects should not be modified. To create a new Options with
3406 * different properties, call a `.having*` method.
3407 */
3408var Options = /*#__PURE__*/function () {
3409 // A font family applies to a group of fonts (i.e. SansSerif), while a font
3410 // represents a specific font (i.e. SansSerif Bold).
3411 // See: https://tex.stackexchange.com/questions/22350/difference-between-textrm-and-mathrm
3412
3413 /**
3414 * The base size index.
3415 */
3416 function Options(data) {
3417 this.style = void 0;
3418 this.color = void 0;
3419 this.size = void 0;
3420 this.textSize = void 0;
3421 this.phantom = void 0;
3422 this.font = void 0;
3423 this.fontFamily = void 0;
3424 this.fontWeight = void 0;
3425 this.fontShape = void 0;
3426 this.sizeMultiplier = void 0;
3427 this.maxSize = void 0;
3428 this.minRuleThickness = void 0;
3429 this._fontMetrics = void 0;
3430 this.style = data.style;
3431 this.color = data.color;
3432 this.size = data.size || Options.BASESIZE;
3433 this.textSize = data.textSize || this.size;
3434 this.phantom = !!data.phantom;
3435 this.font = data.font || "";
3436 this.fontFamily = data.fontFamily || "";
3437 this.fontWeight = data.fontWeight || '';
3438 this.fontShape = data.fontShape || '';
3439 this.sizeMultiplier = sizeMultipliers[this.size - 1];
3440 this.maxSize = data.maxSize;
3441 this.minRuleThickness = data.minRuleThickness;
3442 this._fontMetrics = undefined;
3443 }
3444 /**
3445 * Returns a new options object with the same properties as "this". Properties
3446 * from "extension" will be copied to the new options object.
3447 */
3448
3449
3450 var _proto = Options.prototype;
3451
3452 _proto.extend = function extend(extension) {
3453 var data = {
3454 style: this.style,
3455 size: this.size,
3456 textSize: this.textSize,
3457 color: this.color,
3458 phantom: this.phantom,
3459 font: this.font,
3460 fontFamily: this.fontFamily,
3461 fontWeight: this.fontWeight,
3462 fontShape: this.fontShape,
3463 maxSize: this.maxSize,
3464 minRuleThickness: this.minRuleThickness
3465 };
3466
3467 for (var key in extension) {
3468 if (extension.hasOwnProperty(key)) {
3469 data[key] = extension[key];
3470 }
3471 }
3472
3473 return new Options(data);
3474 }
3475 /**
3476 * Return an options object with the given style. If `this.style === style`,
3477 * returns `this`.
3478 */
3479 ;
3480
3481 _proto.havingStyle = function havingStyle(style) {
3482 if (this.style === style) {
3483 return this;
3484 } else {
3485 return this.extend({
3486 style: style,
3487 size: sizeAtStyle(this.textSize, style)
3488 });
3489 }
3490 }
3491 /**
3492 * Return an options object with a cramped version of the current style. If
3493 * the current style is cramped, returns `this`.
3494 */
3495 ;
3496
3497 _proto.havingCrampedStyle = function havingCrampedStyle() {
3498 return this.havingStyle(this.style.cramp());
3499 }
3500 /**
3501 * Return an options object with the given size and in at least `\textstyle`.
3502 * Returns `this` if appropriate.
3503 */
3504 ;
3505
3506 _proto.havingSize = function havingSize(size) {
3507 if (this.size === size && this.textSize === size) {
3508 return this;
3509 } else {
3510 return this.extend({
3511 style: this.style.text(),
3512 size: size,
3513 textSize: size,
3514 sizeMultiplier: sizeMultipliers[size - 1]
3515 });
3516 }
3517 }
3518 /**
3519 * Like `this.havingSize(BASESIZE).havingStyle(style)`. If `style` is omitted,
3520 * changes to at least `\textstyle`.
3521 */
3522 ;
3523
3524 _proto.havingBaseStyle = function havingBaseStyle(style) {
3525 style = style || this.style.text();
3526 var wantSize = sizeAtStyle(Options.BASESIZE, style);
3527
3528 if (this.size === wantSize && this.textSize === Options.BASESIZE && this.style === style) {
3529 return this;
3530 } else {
3531 return this.extend({
3532 style: style,
3533 size: wantSize
3534 });
3535 }
3536 }
3537 /**
3538 * Remove the effect of sizing changes such as \Huge.
3539 * Keep the effect of the current style, such as \scriptstyle.
3540 */
3541 ;
3542
3543 _proto.havingBaseSizing = function havingBaseSizing() {
3544 var size;
3545
3546 switch (this.style.id) {
3547 case 4:
3548 case 5:
3549 size = 3; // normalsize in scriptstyle
3550
3551 break;
3552
3553 case 6:
3554 case 7:
3555 size = 1; // normalsize in scriptscriptstyle
3556
3557 break;
3558
3559 default:
3560 size = 6;
3561 // normalsize in textstyle or displaystyle
3562 }
3563
3564 return this.extend({
3565 style: this.style.text(),
3566 size: size
3567 });
3568 }
3569 /**
3570 * Create a new options object with the given color.
3571 */
3572 ;
3573
3574 _proto.withColor = function withColor(color) {
3575 return this.extend({
3576 color: color
3577 });
3578 }
3579 /**
3580 * Create a new options object with "phantom" set to true.
3581 */
3582 ;
3583
3584 _proto.withPhantom = function withPhantom() {
3585 return this.extend({
3586 phantom: true
3587 });
3588 }
3589 /**
3590 * Creates a new options object with the given math font or old text font.
3591 * @type {[type]}
3592 */
3593 ;
3594
3595 _proto.withFont = function withFont(font) {
3596 return this.extend({
3597 font: font
3598 });
3599 }
3600 /**
3601 * Create a new options objects with the given fontFamily.
3602 */
3603 ;
3604
3605 _proto.withTextFontFamily = function withTextFontFamily(fontFamily) {
3606 return this.extend({
3607 fontFamily: fontFamily,
3608 font: ""
3609 });
3610 }
3611 /**
3612 * Creates a new options object with the given font weight
3613 */
3614 ;
3615
3616 _proto.withTextFontWeight = function withTextFontWeight(fontWeight) {
3617 return this.extend({
3618 fontWeight: fontWeight,
3619 font: ""
3620 });
3621 }
3622 /**
3623 * Creates a new options object with the given font weight
3624 */
3625 ;
3626
3627 _proto.withTextFontShape = function withTextFontShape(fontShape) {
3628 return this.extend({
3629 fontShape: fontShape,
3630 font: ""
3631 });
3632 }
3633 /**
3634 * Return the CSS sizing classes required to switch from enclosing options
3635 * `oldOptions` to `this`. Returns an array of classes.
3636 */
3637 ;
3638
3639 _proto.sizingClasses = function sizingClasses(oldOptions) {
3640 if (oldOptions.size !== this.size) {
3641 return ["sizing", "reset-size" + oldOptions.size, "size" + this.size];
3642 } else {
3643 return [];
3644 }
3645 }
3646 /**
3647 * Return the CSS sizing classes required to switch to the base size. Like
3648 * `this.havingSize(BASESIZE).sizingClasses(this)`.
3649 */
3650 ;
3651
3652 _proto.baseSizingClasses = function baseSizingClasses() {
3653 if (this.size !== Options.BASESIZE) {
3654 return ["sizing", "reset-size" + this.size, "size" + Options.BASESIZE];
3655 } else {
3656 return [];
3657 }
3658 }
3659 /**
3660 * Return the font metrics for this size.
3661 */
3662 ;
3663
3664 _proto.fontMetrics = function fontMetrics() {
3665 if (!this._fontMetrics) {
3666 this._fontMetrics = getGlobalMetrics(this.size);
3667 }
3668
3669 return this._fontMetrics;
3670 }
3671 /**
3672 * Gets the CSS color of the current options object
3673 */
3674 ;
3675
3676 _proto.getColor = function getColor() {
3677 if (this.phantom) {
3678 return "transparent";
3679 } else {
3680 return this.color;
3681 }
3682 };
3683
3684 return Options;
3685}();
3686
3687Options.BASESIZE = 6;
3688/* harmony default export */ var src_Options = (Options);
3689;// CONCATENATED MODULE: ./src/units.js
3690/**
3691 * This file does conversion between units. In particular, it provides
3692 * calculateSize to convert other units into ems.
3693 */
3694
3695 // This table gives the number of TeX pts in one of each *absolute* TeX unit.
3696// Thus, multiplying a length by this number converts the length from units
3697// into pts. Dividing the result by ptPerEm gives the number of ems
3698// *assuming* a font size of ptPerEm (normal size, normal style).
3699
3700var ptPerUnit = {
3701 // https://en.wikibooks.org/wiki/LaTeX/Lengths and
3702 // https://tex.stackexchange.com/a/8263
3703 "pt": 1,
3704 // TeX point
3705 "mm": 7227 / 2540,
3706 // millimeter
3707 "cm": 7227 / 254,
3708 // centimeter
3709 "in": 72.27,
3710 // inch
3711 "bp": 803 / 800,
3712 // big (PostScript) points
3713 "pc": 12,
3714 // pica
3715 "dd": 1238 / 1157,
3716 // didot
3717 "cc": 14856 / 1157,
3718 // cicero (12 didot)
3719 "nd": 685 / 642,
3720 // new didot
3721 "nc": 1370 / 107,
3722 // new cicero (12 new didot)
3723 "sp": 1 / 65536,
3724 // scaled point (TeX's internal smallest unit)
3725 // https://tex.stackexchange.com/a/41371
3726 "px": 803 / 800 // \pdfpxdimen defaults to 1 bp in pdfTeX and LuaTeX
3727
3728}; // Dictionary of relative units, for fast validity testing.
3729
3730var relativeUnit = {
3731 "ex": true,
3732 "em": true,
3733 "mu": true
3734};
3735
3736/**
3737 * Determine whether the specified unit (either a string defining the unit
3738 * or a "size" parse node containing a unit field) is valid.
3739 */
3740var validUnit = function validUnit(unit) {
3741 if (typeof unit !== "string") {
3742 unit = unit.unit;
3743 }
3744
3745 return unit in ptPerUnit || unit in relativeUnit || unit === "ex";
3746};
3747/*
3748 * Convert a "size" parse node (with numeric "number" and string "unit" fields,
3749 * as parsed by functions.js argType "size") into a CSS em value for the
3750 * current style/scale. `options` gives the current options.
3751 */
3752
3753var calculateSize = function calculateSize(sizeValue, options) {
3754 var scale;
3755
3756 if (sizeValue.unit in ptPerUnit) {
3757 // Absolute units
3758 scale = ptPerUnit[sizeValue.unit] // Convert unit to pt
3759 / options.fontMetrics().ptPerEm // Convert pt to CSS em
3760 / options.sizeMultiplier; // Unscale to make absolute units
3761 } else if (sizeValue.unit === "mu") {
3762 // `mu` units scale with scriptstyle/scriptscriptstyle.
3763 scale = options.fontMetrics().cssEmPerMu;
3764 } else {
3765 // Other relative units always refer to the *textstyle* font
3766 // in the current size.
3767 var unitOptions;
3768
3769 if (options.style.isTight()) {
3770 // isTight() means current style is script/scriptscript.
3771 unitOptions = options.havingStyle(options.style.text());
3772 } else {
3773 unitOptions = options;
3774 } // TODO: In TeX these units are relative to the quad of the current
3775 // *text* font, e.g. cmr10. KaTeX instead uses values from the
3776 // comparably-sized *Computer Modern symbol* font. At 10pt, these
3777 // match. At 7pt and 5pt, they differ: cmr7=1.138894, cmsy7=1.170641;
3778 // cmr5=1.361133, cmsy5=1.472241. Consider $\scriptsize a\kern1emb$.
3779 // TeX \showlists shows a kern of 1.13889 * fontsize;
3780 // KaTeX shows a kern of 1.171 * fontsize.
3781
3782
3783 if (sizeValue.unit === "ex") {
3784 scale = unitOptions.fontMetrics().xHeight;
3785 } else if (sizeValue.unit === "em") {
3786 scale = unitOptions.fontMetrics().quad;
3787 } else {
3788 throw new src_ParseError("Invalid unit: '" + sizeValue.unit + "'");
3789 }
3790
3791 if (unitOptions !== options) {
3792 scale *= unitOptions.sizeMultiplier / options.sizeMultiplier;
3793 }
3794 }
3795
3796 return Math.min(sizeValue.number * scale, options.maxSize);
3797};
3798/**
3799 * Round `n` to 4 decimal places, or to the nearest 1/10,000th em. See
3800 * https://github.com/KaTeX/KaTeX/pull/2460.
3801 */
3802
3803var makeEm = function makeEm(n) {
3804 return +n.toFixed(4) + "em";
3805};
3806;// CONCATENATED MODULE: ./src/domTree.js
3807/**
3808 * These objects store the data about the DOM nodes we create, as well as some
3809 * extra data. They can then be transformed into real DOM nodes with the
3810 * `toNode` function or HTML markup using `toMarkup`. They are useful for both
3811 * storing extra properties on the nodes, as well as providing a way to easily
3812 * work with the DOM.
3813 *
3814 * Similar functions for working with MathML nodes exist in mathMLTree.js.
3815 *
3816 * TODO: refactor `span` and `anchor` into common superclass when
3817 * target environments support class inheritance
3818 */
3819
3820
3821
3822
3823
3824
3825/**
3826 * Create an HTML className based on a list of classes. In addition to joining
3827 * with spaces, we also remove empty classes.
3828 */
3829var createClass = function createClass(classes) {
3830 return classes.filter(function (cls) {
3831 return cls;
3832 }).join(" ");
3833};
3834
3835var initNode = function initNode(classes, options, style) {
3836 this.classes = classes || [];
3837 this.attributes = {};
3838 this.height = 0;
3839 this.depth = 0;
3840 this.maxFontSize = 0;
3841 this.style = style || {};
3842
3843 if (options) {
3844 if (options.style.isTight()) {
3845 this.classes.push("mtight");
3846 }
3847
3848 var color = options.getColor();
3849
3850 if (color) {
3851 this.style.color = color;
3852 }
3853 }
3854};
3855/**
3856 * Convert into an HTML node
3857 */
3858
3859
3860var _toNode = function toNode(tagName) {
3861 var node = document.createElement(tagName); // Apply the class
3862
3863 node.className = createClass(this.classes); // Apply inline styles
3864
3865 for (var style in this.style) {
3866 if (this.style.hasOwnProperty(style)) {
3867 // $FlowFixMe Flow doesn't seem to understand span.style's type.
3868 node.style[style] = this.style[style];
3869 }
3870 } // Apply attributes
3871
3872
3873 for (var attr in this.attributes) {
3874 if (this.attributes.hasOwnProperty(attr)) {
3875 node.setAttribute(attr, this.attributes[attr]);
3876 }
3877 } // Append the children, also as HTML nodes
3878
3879
3880 for (var i = 0; i < this.children.length; i++) {
3881 node.appendChild(this.children[i].toNode());
3882 }
3883
3884 return node;
3885};
3886/**
3887 * Convert into an HTML markup string
3888 */
3889
3890
3891var _toMarkup = function toMarkup(tagName) {
3892 var markup = "<" + tagName; // Add the class
3893
3894 if (this.classes.length) {
3895 markup += " class=\"" + utils.escape(createClass(this.classes)) + "\"";
3896 }
3897
3898 var styles = ""; // Add the styles, after hyphenation
3899
3900 for (var style in this.style) {
3901 if (this.style.hasOwnProperty(style)) {
3902 styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
3903 }
3904 }
3905
3906 if (styles) {
3907 markup += " style=\"" + utils.escape(styles) + "\"";
3908 } // Add the attributes
3909
3910
3911 for (var attr in this.attributes) {
3912 if (this.attributes.hasOwnProperty(attr)) {
3913 markup += " " + attr + "=\"" + utils.escape(this.attributes[attr]) + "\"";
3914 }
3915 }
3916
3917 markup += ">"; // Add the markup of the children, also as markup
3918
3919 for (var i = 0; i < this.children.length; i++) {
3920 markup += this.children[i].toMarkup();
3921 }
3922
3923 markup += "</" + tagName + ">";
3924 return markup;
3925}; // Making the type below exact with all optional fields doesn't work due to
3926// - https://github.com/facebook/flow/issues/4582
3927// - https://github.com/facebook/flow/issues/5688
3928// However, since *all* fields are optional, $Shape<> works as suggested in 5688
3929// above.
3930// This type does not include all CSS properties. Additional properties should
3931// be added as needed.
3932
3933
3934/**
3935 * This node represents a span node, with a className, a list of children, and
3936 * an inline style. It also contains information about its height, depth, and
3937 * maxFontSize.
3938 *
3939 * Represents two types with different uses: SvgSpan to wrap an SVG and DomSpan
3940 * otherwise. This typesafety is important when HTML builders access a span's
3941 * children.
3942 */
3943var Span = /*#__PURE__*/function () {
3944 function Span(classes, children, options, style) {
3945 this.children = void 0;
3946 this.attributes = void 0;
3947 this.classes = void 0;
3948 this.height = void 0;
3949 this.depth = void 0;
3950 this.width = void 0;
3951 this.maxFontSize = void 0;
3952 this.style = void 0;
3953 initNode.call(this, classes, options, style);
3954 this.children = children || [];
3955 }
3956 /**
3957 * Sets an arbitrary attribute on the span. Warning: use this wisely. Not
3958 * all browsers support attributes the same, and having too many custom
3959 * attributes is probably bad.
3960 */
3961
3962
3963 var _proto = Span.prototype;
3964
3965 _proto.setAttribute = function setAttribute(attribute, value) {
3966 this.attributes[attribute] = value;
3967 };
3968
3969 _proto.hasClass = function hasClass(className) {
3970 return utils.contains(this.classes, className);
3971 };
3972
3973 _proto.toNode = function toNode() {
3974 return _toNode.call(this, "span");
3975 };
3976
3977 _proto.toMarkup = function toMarkup() {
3978 return _toMarkup.call(this, "span");
3979 };
3980
3981 return Span;
3982}();
3983/**
3984 * This node represents an anchor (<a>) element with a hyperlink. See `span`
3985 * for further details.
3986 */
3987
3988var Anchor = /*#__PURE__*/function () {
3989 function Anchor(href, classes, children, options) {
3990 this.children = void 0;
3991 this.attributes = void 0;
3992 this.classes = void 0;
3993 this.height = void 0;
3994 this.depth = void 0;
3995 this.maxFontSize = void 0;
3996 this.style = void 0;
3997 initNode.call(this, classes, options);
3998 this.children = children || [];
3999 this.setAttribute('href', href);
4000 }
4001
4002 var _proto2 = Anchor.prototype;
4003
4004 _proto2.setAttribute = function setAttribute(attribute, value) {
4005 this.attributes[attribute] = value;
4006 };
4007
4008 _proto2.hasClass = function hasClass(className) {
4009 return utils.contains(this.classes, className);
4010 };
4011
4012 _proto2.toNode = function toNode() {
4013 return _toNode.call(this, "a");
4014 };
4015
4016 _proto2.toMarkup = function toMarkup() {
4017 return _toMarkup.call(this, "a");
4018 };
4019
4020 return Anchor;
4021}();
4022/**
4023 * This node represents an image embed (<img>) element.
4024 */
4025
4026var Img = /*#__PURE__*/function () {
4027 function Img(src, alt, style) {
4028 this.src = void 0;
4029 this.alt = void 0;
4030 this.classes = void 0;
4031 this.height = void 0;
4032 this.depth = void 0;
4033 this.maxFontSize = void 0;
4034 this.style = void 0;
4035 this.alt = alt;
4036 this.src = src;
4037 this.classes = ["mord"];
4038 this.style = style;
4039 }
4040
4041 var _proto3 = Img.prototype;
4042
4043 _proto3.hasClass = function hasClass(className) {
4044 return utils.contains(this.classes, className);
4045 };
4046
4047 _proto3.toNode = function toNode() {
4048 var node = document.createElement("img");
4049 node.src = this.src;
4050 node.alt = this.alt;
4051 node.className = "mord"; // Apply inline styles
4052
4053 for (var style in this.style) {
4054 if (this.style.hasOwnProperty(style)) {
4055 // $FlowFixMe
4056 node.style[style] = this.style[style];
4057 }
4058 }
4059
4060 return node;
4061 };
4062
4063 _proto3.toMarkup = function toMarkup() {
4064 var markup = "<img src='" + this.src + " 'alt='" + this.alt + "' "; // Add the styles, after hyphenation
4065
4066 var styles = "";
4067
4068 for (var style in this.style) {
4069 if (this.style.hasOwnProperty(style)) {
4070 styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
4071 }
4072 }
4073
4074 if (styles) {
4075 markup += " style=\"" + utils.escape(styles) + "\"";
4076 }
4077
4078 markup += "'/>";
4079 return markup;
4080 };
4081
4082 return Img;
4083}();
4084var iCombinations = {
4085 'î': "\u0131\u0302",
4086 'ï': "\u0131\u0308",
4087 'í': "\u0131\u0301",
4088 // 'ī': '\u0131\u0304', // enable when we add Extended Latin
4089 'ì': "\u0131\u0300"
4090};
4091/**
4092 * A symbol node contains information about a single symbol. It either renders
4093 * to a single text node, or a span with a single text node in it, depending on
4094 * whether it has CSS classes, styles, or needs italic correction.
4095 */
4096
4097var SymbolNode = /*#__PURE__*/function () {
4098 function SymbolNode(text, height, depth, italic, skew, width, classes, style) {
4099 this.text = void 0;
4100 this.height = void 0;
4101 this.depth = void 0;
4102 this.italic = void 0;
4103 this.skew = void 0;
4104 this.width = void 0;
4105 this.maxFontSize = void 0;
4106 this.classes = void 0;
4107 this.style = void 0;
4108 this.text = text;
4109 this.height = height || 0;
4110 this.depth = depth || 0;
4111 this.italic = italic || 0;
4112 this.skew = skew || 0;
4113 this.width = width || 0;
4114 this.classes = classes || [];
4115 this.style = style || {};
4116 this.maxFontSize = 0; // Mark text from non-Latin scripts with specific classes so that we
4117 // can specify which fonts to use. This allows us to render these
4118 // characters with a serif font in situations where the browser would
4119 // either default to a sans serif or render a placeholder character.
4120 // We use CSS class names like cjk_fallback, hangul_fallback and
4121 // brahmic_fallback. See ./unicodeScripts.js for the set of possible
4122 // script names
4123
4124 var script = scriptFromCodepoint(this.text.charCodeAt(0));
4125
4126 if (script) {
4127 this.classes.push(script + "_fallback");
4128 }
4129
4130 if (/[îïíì]/.test(this.text)) {
4131 // add ī when we add Extended Latin
4132 this.text = iCombinations[this.text];
4133 }
4134 }
4135
4136 var _proto4 = SymbolNode.prototype;
4137
4138 _proto4.hasClass = function hasClass(className) {
4139 return utils.contains(this.classes, className);
4140 }
4141 /**
4142 * Creates a text node or span from a symbol node. Note that a span is only
4143 * created if it is needed.
4144 */
4145 ;
4146
4147 _proto4.toNode = function toNode() {
4148 var node = document.createTextNode(this.text);
4149 var span = null;
4150
4151 if (this.italic > 0) {
4152 span = document.createElement("span");
4153 span.style.marginRight = makeEm(this.italic);
4154 }
4155
4156 if (this.classes.length > 0) {
4157 span = span || document.createElement("span");
4158 span.className = createClass(this.classes);
4159 }
4160
4161 for (var style in this.style) {
4162 if (this.style.hasOwnProperty(style)) {
4163 span = span || document.createElement("span"); // $FlowFixMe Flow doesn't seem to understand span.style's type.
4164
4165 span.style[style] = this.style[style];
4166 }
4167 }
4168
4169 if (span) {
4170 span.appendChild(node);
4171 return span;
4172 } else {
4173 return node;
4174 }
4175 }
4176 /**
4177 * Creates markup for a symbol node.
4178 */
4179 ;
4180
4181 _proto4.toMarkup = function toMarkup() {
4182 // TODO(alpert): More duplication than I'd like from
4183 // span.prototype.toMarkup and symbolNode.prototype.toNode...
4184 var needsSpan = false;
4185 var markup = "<span";
4186
4187 if (this.classes.length) {
4188 needsSpan = true;
4189 markup += " class=\"";
4190 markup += utils.escape(createClass(this.classes));
4191 markup += "\"";
4192 }
4193
4194 var styles = "";
4195
4196 if (this.italic > 0) {
4197 styles += "margin-right:" + this.italic + "em;";
4198 }
4199
4200 for (var style in this.style) {
4201 if (this.style.hasOwnProperty(style)) {
4202 styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
4203 }
4204 }
4205
4206 if (styles) {
4207 needsSpan = true;
4208 markup += " style=\"" + utils.escape(styles) + "\"";
4209 }
4210
4211 var escaped = utils.escape(this.text);
4212
4213 if (needsSpan) {
4214 markup += ">";
4215 markup += escaped;
4216 markup += "</span>";
4217 return markup;
4218 } else {
4219 return escaped;
4220 }
4221 };
4222
4223 return SymbolNode;
4224}();
4225/**
4226 * SVG nodes are used to render stretchy wide elements.
4227 */
4228
4229var SvgNode = /*#__PURE__*/function () {
4230 function SvgNode(children, attributes) {
4231 this.children = void 0;
4232 this.attributes = void 0;
4233 this.children = children || [];
4234 this.attributes = attributes || {};
4235 }
4236
4237 var _proto5 = SvgNode.prototype;
4238
4239 _proto5.toNode = function toNode() {
4240 var svgNS = "http://www.w3.org/2000/svg";
4241 var node = document.createElementNS(svgNS, "svg"); // Apply attributes
4242
4243 for (var attr in this.attributes) {
4244 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
4245 node.setAttribute(attr, this.attributes[attr]);
4246 }
4247 }
4248
4249 for (var i = 0; i < this.children.length; i++) {
4250 node.appendChild(this.children[i].toNode());
4251 }
4252
4253 return node;
4254 };
4255
4256 _proto5.toMarkup = function toMarkup() {
4257 var markup = "<svg xmlns=\"http://www.w3.org/2000/svg\""; // Apply attributes
4258
4259 for (var attr in this.attributes) {
4260 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
4261 markup += " " + attr + "='" + this.attributes[attr] + "'";
4262 }
4263 }
4264
4265 markup += ">";
4266
4267 for (var i = 0; i < this.children.length; i++) {
4268 markup += this.children[i].toMarkup();
4269 }
4270
4271 markup += "</svg>";
4272 return markup;
4273 };
4274
4275 return SvgNode;
4276}();
4277var PathNode = /*#__PURE__*/function () {
4278 function PathNode(pathName, alternate) {
4279 this.pathName = void 0;
4280 this.alternate = void 0;
4281 this.pathName = pathName;
4282 this.alternate = alternate; // Used only for \sqrt, \phase, & tall delims
4283 }
4284
4285 var _proto6 = PathNode.prototype;
4286
4287 _proto6.toNode = function toNode() {
4288 var svgNS = "http://www.w3.org/2000/svg";
4289 var node = document.createElementNS(svgNS, "path");
4290
4291 if (this.alternate) {
4292 node.setAttribute("d", this.alternate);
4293 } else {
4294 node.setAttribute("d", path[this.pathName]);
4295 }
4296
4297 return node;
4298 };
4299
4300 _proto6.toMarkup = function toMarkup() {
4301 if (this.alternate) {
4302 return "<path d='" + this.alternate + "'/>";
4303 } else {
4304 return "<path d='" + path[this.pathName] + "'/>";
4305 }
4306 };
4307
4308 return PathNode;
4309}();
4310var LineNode = /*#__PURE__*/function () {
4311 function LineNode(attributes) {
4312 this.attributes = void 0;
4313 this.attributes = attributes || {};
4314 }
4315
4316 var _proto7 = LineNode.prototype;
4317
4318 _proto7.toNode = function toNode() {
4319 var svgNS = "http://www.w3.org/2000/svg";
4320 var node = document.createElementNS(svgNS, "line"); // Apply attributes
4321
4322 for (var attr in this.attributes) {
4323 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
4324 node.setAttribute(attr, this.attributes[attr]);
4325 }
4326 }
4327
4328 return node;
4329 };
4330
4331 _proto7.toMarkup = function toMarkup() {
4332 var markup = "<line";
4333
4334 for (var attr in this.attributes) {
4335 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
4336 markup += " " + attr + "='" + this.attributes[attr] + "'";
4337 }
4338 }
4339
4340 markup += "/>";
4341 return markup;
4342 };
4343
4344 return LineNode;
4345}();
4346function assertSymbolDomNode(group) {
4347 if (group instanceof SymbolNode) {
4348 return group;
4349 } else {
4350 throw new Error("Expected symbolNode but got " + String(group) + ".");
4351 }
4352}
4353function assertSpan(group) {
4354 if (group instanceof Span) {
4355 return group;
4356 } else {
4357 throw new Error("Expected span<HtmlDomNode> but got " + String(group) + ".");
4358 }
4359}
4360;// CONCATENATED MODULE: ./src/symbols.js
4361/**
4362 * This file holds a list of all no-argument functions and single-character
4363 * symbols (like 'a' or ';').
4364 *
4365 * For each of the symbols, there are three properties they can have:
4366 * - font (required): the font to be used for this symbol. Either "main" (the
4367 normal font), or "ams" (the ams fonts).
4368 * - group (required): the ParseNode group type the symbol should have (i.e.
4369 "textord", "mathord", etc).
4370 See https://github.com/KaTeX/KaTeX/wiki/Examining-TeX#group-types
4371 * - replace: the character that this symbol or function should be
4372 * replaced with (i.e. "\phi" has a replace value of "\u03d5", the phi
4373 * character in the main font).
4374 *
4375 * The outermost map in the table indicates what mode the symbols should be
4376 * accepted in (e.g. "math" or "text").
4377 */
4378// Some of these have a "-token" suffix since these are also used as `ParseNode`
4379// types for raw text tokens, and we want to avoid conflicts with higher-level
4380// `ParseNode` types. These `ParseNode`s are constructed within `Parser` by
4381// looking up the `symbols` map.
4382var ATOMS = {
4383 "bin": 1,
4384 "close": 1,
4385 "inner": 1,
4386 "open": 1,
4387 "punct": 1,
4388 "rel": 1
4389};
4390var NON_ATOMS = {
4391 "accent-token": 1,
4392 "mathord": 1,
4393 "op-token": 1,
4394 "spacing": 1,
4395 "textord": 1
4396};
4397var symbols = {
4398 "math": {},
4399 "text": {}
4400};
4401/* harmony default export */ var src_symbols = (symbols);
4402/** `acceptUnicodeChar = true` is only applicable if `replace` is set. */
4403
4404function defineSymbol(mode, font, group, replace, name, acceptUnicodeChar) {
4405 symbols[mode][name] = {
4406 font: font,
4407 group: group,
4408 replace: replace
4409 };
4410
4411 if (acceptUnicodeChar && replace) {
4412 symbols[mode][replace] = symbols[mode][name];
4413 }
4414} // Some abbreviations for commonly used strings.
4415// This helps minify the code, and also spotting typos using jshint.
4416// modes:
4417
4418var math = "math";
4419var symbols_text = "text"; // fonts:
4420
4421var main = "main";
4422var ams = "ams"; // groups:
4423
4424var accent = "accent-token";
4425var bin = "bin";
4426var symbols_close = "close";
4427var inner = "inner";
4428var mathord = "mathord";
4429var op = "op-token";
4430var symbols_open = "open";
4431var punct = "punct";
4432var rel = "rel";
4433var spacing = "spacing";
4434var textord = "textord"; // Now comes the symbol table
4435// Relation Symbols
4436
4437defineSymbol(math, main, rel, "\u2261", "\\equiv", true);
4438defineSymbol(math, main, rel, "\u227A", "\\prec", true);
4439defineSymbol(math, main, rel, "\u227B", "\\succ", true);
4440defineSymbol(math, main, rel, "\u223C", "\\sim", true);
4441defineSymbol(math, main, rel, "\u22A5", "\\perp");
4442defineSymbol(math, main, rel, "\u2AAF", "\\preceq", true);
4443defineSymbol(math, main, rel, "\u2AB0", "\\succeq", true);
4444defineSymbol(math, main, rel, "\u2243", "\\simeq", true);
4445defineSymbol(math, main, rel, "\u2223", "\\mid", true);
4446defineSymbol(math, main, rel, "\u226A", "\\ll", true);
4447defineSymbol(math, main, rel, "\u226B", "\\gg", true);
4448defineSymbol(math, main, rel, "\u224D", "\\asymp", true);
4449defineSymbol(math, main, rel, "\u2225", "\\parallel");
4450defineSymbol(math, main, rel, "\u22C8", "\\bowtie", true);
4451defineSymbol(math, main, rel, "\u2323", "\\smile", true);
4452defineSymbol(math, main, rel, "\u2291", "\\sqsubseteq", true);
4453defineSymbol(math, main, rel, "\u2292", "\\sqsupseteq", true);
4454defineSymbol(math, main, rel, "\u2250", "\\doteq", true);
4455defineSymbol(math, main, rel, "\u2322", "\\frown", true);
4456defineSymbol(math, main, rel, "\u220B", "\\ni", true);
4457defineSymbol(math, main, rel, "\u221D", "\\propto", true);
4458defineSymbol(math, main, rel, "\u22A2", "\\vdash", true);
4459defineSymbol(math, main, rel, "\u22A3", "\\dashv", true);
4460defineSymbol(math, main, rel, "\u220B", "\\owns"); // Punctuation
4461
4462defineSymbol(math, main, punct, ".", "\\ldotp");
4463defineSymbol(math, main, punct, "\u22C5", "\\cdotp"); // Misc Symbols
4464
4465defineSymbol(math, main, textord, "#", "\\#");
4466defineSymbol(symbols_text, main, textord, "#", "\\#");
4467defineSymbol(math, main, textord, "&", "\\&");
4468defineSymbol(symbols_text, main, textord, "&", "\\&");
4469defineSymbol(math, main, textord, "\u2135", "\\aleph", true);
4470defineSymbol(math, main, textord, "\u2200", "\\forall", true);
4471defineSymbol(math, main, textord, "\u210F", "\\hbar", true);
4472defineSymbol(math, main, textord, "\u2203", "\\exists", true);
4473defineSymbol(math, main, textord, "\u2207", "\\nabla", true);
4474defineSymbol(math, main, textord, "\u266D", "\\flat", true);
4475defineSymbol(math, main, textord, "\u2113", "\\ell", true);
4476defineSymbol(math, main, textord, "\u266E", "\\natural", true);
4477defineSymbol(math, main, textord, "\u2663", "\\clubsuit", true);
4478defineSymbol(math, main, textord, "\u2118", "\\wp", true);
4479defineSymbol(math, main, textord, "\u266F", "\\sharp", true);
4480defineSymbol(math, main, textord, "\u2662", "\\diamondsuit", true);
4481defineSymbol(math, main, textord, "\u211C", "\\Re", true);
4482defineSymbol(math, main, textord, "\u2661", "\\heartsuit", true);
4483defineSymbol(math, main, textord, "\u2111", "\\Im", true);
4484defineSymbol(math, main, textord, "\u2660", "\\spadesuit", true);
4485defineSymbol(math, main, textord, "\xA7", "\\S", true);
4486defineSymbol(symbols_text, main, textord, "\xA7", "\\S");
4487defineSymbol(math, main, textord, "\xB6", "\\P", true);
4488defineSymbol(symbols_text, main, textord, "\xB6", "\\P"); // Math and Text
4489
4490defineSymbol(math, main, textord, "\u2020", "\\dag");
4491defineSymbol(symbols_text, main, textord, "\u2020", "\\dag");
4492defineSymbol(symbols_text, main, textord, "\u2020", "\\textdagger");
4493defineSymbol(math, main, textord, "\u2021", "\\ddag");
4494defineSymbol(symbols_text, main, textord, "\u2021", "\\ddag");
4495defineSymbol(symbols_text, main, textord, "\u2021", "\\textdaggerdbl"); // Large Delimiters
4496
4497defineSymbol(math, main, symbols_close, "\u23B1", "\\rmoustache", true);
4498defineSymbol(math, main, symbols_open, "\u23B0", "\\lmoustache", true);
4499defineSymbol(math, main, symbols_close, "\u27EF", "\\rgroup", true);
4500defineSymbol(math, main, symbols_open, "\u27EE", "\\lgroup", true); // Binary Operators
4501
4502defineSymbol(math, main, bin, "\u2213", "\\mp", true);
4503defineSymbol(math, main, bin, "\u2296", "\\ominus", true);
4504defineSymbol(math, main, bin, "\u228E", "\\uplus", true);
4505defineSymbol(math, main, bin, "\u2293", "\\sqcap", true);
4506defineSymbol(math, main, bin, "\u2217", "\\ast");
4507defineSymbol(math, main, bin, "\u2294", "\\sqcup", true);
4508defineSymbol(math, main, bin, "\u25EF", "\\bigcirc", true);
4509defineSymbol(math, main, bin, "\u2219", "\\bullet", true);
4510defineSymbol(math, main, bin, "\u2021", "\\ddagger");
4511defineSymbol(math, main, bin, "\u2240", "\\wr", true);
4512defineSymbol(math, main, bin, "\u2A3F", "\\amalg");
4513defineSymbol(math, main, bin, "&", "\\And"); // from amsmath
4514// Arrow Symbols
4515
4516defineSymbol(math, main, rel, "\u27F5", "\\longleftarrow", true);
4517defineSymbol(math, main, rel, "\u21D0", "\\Leftarrow", true);
4518defineSymbol(math, main, rel, "\u27F8", "\\Longleftarrow", true);
4519defineSymbol(math, main, rel, "\u27F6", "\\longrightarrow", true);
4520defineSymbol(math, main, rel, "\u21D2", "\\Rightarrow", true);
4521defineSymbol(math, main, rel, "\u27F9", "\\Longrightarrow", true);
4522defineSymbol(math, main, rel, "\u2194", "\\leftrightarrow", true);
4523defineSymbol(math, main, rel, "\u27F7", "\\longleftrightarrow", true);
4524defineSymbol(math, main, rel, "\u21D4", "\\Leftrightarrow", true);
4525defineSymbol(math, main, rel, "\u27FA", "\\Longleftrightarrow", true);
4526defineSymbol(math, main, rel, "\u21A6", "\\mapsto", true);
4527defineSymbol(math, main, rel, "\u27FC", "\\longmapsto", true);
4528defineSymbol(math, main, rel, "\u2197", "\\nearrow", true);
4529defineSymbol(math, main, rel, "\u21A9", "\\hookleftarrow", true);
4530defineSymbol(math, main, rel, "\u21AA", "\\hookrightarrow", true);
4531defineSymbol(math, main, rel, "\u2198", "\\searrow", true);
4532defineSymbol(math, main, rel, "\u21BC", "\\leftharpoonup", true);
4533defineSymbol(math, main, rel, "\u21C0", "\\rightharpoonup", true);
4534defineSymbol(math, main, rel, "\u2199", "\\swarrow", true);
4535defineSymbol(math, main, rel, "\u21BD", "\\leftharpoondown", true);
4536defineSymbol(math, main, rel, "\u21C1", "\\rightharpoondown", true);
4537defineSymbol(math, main, rel, "\u2196", "\\nwarrow", true);
4538defineSymbol(math, main, rel, "\u21CC", "\\rightleftharpoons", true); // AMS Negated Binary Relations
4539
4540defineSymbol(math, ams, rel, "\u226E", "\\nless", true); // Symbol names preceeded by "@" each have a corresponding macro.
4541
4542defineSymbol(math, ams, rel, "\uE010", "\\@nleqslant");
4543defineSymbol(math, ams, rel, "\uE011", "\\@nleqq");
4544defineSymbol(math, ams, rel, "\u2A87", "\\lneq", true);
4545defineSymbol(math, ams, rel, "\u2268", "\\lneqq", true);
4546defineSymbol(math, ams, rel, "\uE00C", "\\@lvertneqq");
4547defineSymbol(math, ams, rel, "\u22E6", "\\lnsim", true);
4548defineSymbol(math, ams, rel, "\u2A89", "\\lnapprox", true);
4549defineSymbol(math, ams, rel, "\u2280", "\\nprec", true); // unicode-math maps \u22e0 to \npreccurlyeq. We'll use the AMS synonym.
4550
4551defineSymbol(math, ams, rel, "\u22E0", "\\npreceq", true);
4552defineSymbol(math, ams, rel, "\u22E8", "\\precnsim", true);
4553defineSymbol(math, ams, rel, "\u2AB9", "\\precnapprox", true);
4554defineSymbol(math, ams, rel, "\u2241", "\\nsim", true);
4555defineSymbol(math, ams, rel, "\uE006", "\\@nshortmid");
4556defineSymbol(math, ams, rel, "\u2224", "\\nmid", true);
4557defineSymbol(math, ams, rel, "\u22AC", "\\nvdash", true);
4558defineSymbol(math, ams, rel, "\u22AD", "\\nvDash", true);
4559defineSymbol(math, ams, rel, "\u22EA", "\\ntriangleleft");
4560defineSymbol(math, ams, rel, "\u22EC", "\\ntrianglelefteq", true);
4561defineSymbol(math, ams, rel, "\u228A", "\\subsetneq", true);
4562defineSymbol(math, ams, rel, "\uE01A", "\\@varsubsetneq");
4563defineSymbol(math, ams, rel, "\u2ACB", "\\subsetneqq", true);
4564defineSymbol(math, ams, rel, "\uE017", "\\@varsubsetneqq");
4565defineSymbol(math, ams, rel, "\u226F", "\\ngtr", true);
4566defineSymbol(math, ams, rel, "\uE00F", "\\@ngeqslant");
4567defineSymbol(math, ams, rel, "\uE00E", "\\@ngeqq");
4568defineSymbol(math, ams, rel, "\u2A88", "\\gneq", true);
4569defineSymbol(math, ams, rel, "\u2269", "\\gneqq", true);
4570defineSymbol(math, ams, rel, "\uE00D", "\\@gvertneqq");
4571defineSymbol(math, ams, rel, "\u22E7", "\\gnsim", true);
4572defineSymbol(math, ams, rel, "\u2A8A", "\\gnapprox", true);
4573defineSymbol(math, ams, rel, "\u2281", "\\nsucc", true); // unicode-math maps \u22e1 to \nsucccurlyeq. We'll use the AMS synonym.
4574
4575defineSymbol(math, ams, rel, "\u22E1", "\\nsucceq", true);
4576defineSymbol(math, ams, rel, "\u22E9", "\\succnsim", true);
4577defineSymbol(math, ams, rel, "\u2ABA", "\\succnapprox", true); // unicode-math maps \u2246 to \simneqq. We'll use the AMS synonym.
4578
4579defineSymbol(math, ams, rel, "\u2246", "\\ncong", true);
4580defineSymbol(math, ams, rel, "\uE007", "\\@nshortparallel");
4581defineSymbol(math, ams, rel, "\u2226", "\\nparallel", true);
4582defineSymbol(math, ams, rel, "\u22AF", "\\nVDash", true);
4583defineSymbol(math, ams, rel, "\u22EB", "\\ntriangleright");
4584defineSymbol(math, ams, rel, "\u22ED", "\\ntrianglerighteq", true);
4585defineSymbol(math, ams, rel, "\uE018", "\\@nsupseteqq");
4586defineSymbol(math, ams, rel, "\u228B", "\\supsetneq", true);
4587defineSymbol(math, ams, rel, "\uE01B", "\\@varsupsetneq");
4588defineSymbol(math, ams, rel, "\u2ACC", "\\supsetneqq", true);
4589defineSymbol(math, ams, rel, "\uE019", "\\@varsupsetneqq");
4590defineSymbol(math, ams, rel, "\u22AE", "\\nVdash", true);
4591defineSymbol(math, ams, rel, "\u2AB5", "\\precneqq", true);
4592defineSymbol(math, ams, rel, "\u2AB6", "\\succneqq", true);
4593defineSymbol(math, ams, rel, "\uE016", "\\@nsubseteqq");
4594defineSymbol(math, ams, bin, "\u22B4", "\\unlhd");
4595defineSymbol(math, ams, bin, "\u22B5", "\\unrhd"); // AMS Negated Arrows
4596
4597defineSymbol(math, ams, rel, "\u219A", "\\nleftarrow", true);
4598defineSymbol(math, ams, rel, "\u219B", "\\nrightarrow", true);
4599defineSymbol(math, ams, rel, "\u21CD", "\\nLeftarrow", true);
4600defineSymbol(math, ams, rel, "\u21CF", "\\nRightarrow", true);
4601defineSymbol(math, ams, rel, "\u21AE", "\\nleftrightarrow", true);
4602defineSymbol(math, ams, rel, "\u21CE", "\\nLeftrightarrow", true); // AMS Misc
4603
4604defineSymbol(math, ams, rel, "\u25B3", "\\vartriangle");
4605defineSymbol(math, ams, textord, "\u210F", "\\hslash");
4606defineSymbol(math, ams, textord, "\u25BD", "\\triangledown");
4607defineSymbol(math, ams, textord, "\u25CA", "\\lozenge");
4608defineSymbol(math, ams, textord, "\u24C8", "\\circledS");
4609defineSymbol(math, ams, textord, "\xAE", "\\circledR");
4610defineSymbol(symbols_text, ams, textord, "\xAE", "\\circledR");
4611defineSymbol(math, ams, textord, "\u2221", "\\measuredangle", true);
4612defineSymbol(math, ams, textord, "\u2204", "\\nexists");
4613defineSymbol(math, ams, textord, "\u2127", "\\mho");
4614defineSymbol(math, ams, textord, "\u2132", "\\Finv", true);
4615defineSymbol(math, ams, textord, "\u2141", "\\Game", true);
4616defineSymbol(math, ams, textord, "\u2035", "\\backprime");
4617defineSymbol(math, ams, textord, "\u25B2", "\\blacktriangle");
4618defineSymbol(math, ams, textord, "\u25BC", "\\blacktriangledown");
4619defineSymbol(math, ams, textord, "\u25A0", "\\blacksquare");
4620defineSymbol(math, ams, textord, "\u29EB", "\\blacklozenge");
4621defineSymbol(math, ams, textord, "\u2605", "\\bigstar");
4622defineSymbol(math, ams, textord, "\u2222", "\\sphericalangle", true);
4623defineSymbol(math, ams, textord, "\u2201", "\\complement", true); // unicode-math maps U+F0 to \matheth. We map to AMS function \eth
4624
4625defineSymbol(math, ams, textord, "\xF0", "\\eth", true);
4626defineSymbol(symbols_text, main, textord, "\xF0", "\xF0");
4627defineSymbol(math, ams, textord, "\u2571", "\\diagup");
4628defineSymbol(math, ams, textord, "\u2572", "\\diagdown");
4629defineSymbol(math, ams, textord, "\u25A1", "\\square");
4630defineSymbol(math, ams, textord, "\u25A1", "\\Box");
4631defineSymbol(math, ams, textord, "\u25CA", "\\Diamond"); // unicode-math maps U+A5 to \mathyen. We map to AMS function \yen
4632
4633defineSymbol(math, ams, textord, "\xA5", "\\yen", true);
4634defineSymbol(symbols_text, ams, textord, "\xA5", "\\yen", true);
4635defineSymbol(math, ams, textord, "\u2713", "\\checkmark", true);
4636defineSymbol(symbols_text, ams, textord, "\u2713", "\\checkmark"); // AMS Hebrew
4637
4638defineSymbol(math, ams, textord, "\u2136", "\\beth", true);
4639defineSymbol(math, ams, textord, "\u2138", "\\daleth", true);
4640defineSymbol(math, ams, textord, "\u2137", "\\gimel", true); // AMS Greek
4641
4642defineSymbol(math, ams, textord, "\u03DD", "\\digamma", true);
4643defineSymbol(math, ams, textord, "\u03F0", "\\varkappa"); // AMS Delimiters
4644
4645defineSymbol(math, ams, symbols_open, "\u250C", "\\@ulcorner", true);
4646defineSymbol(math, ams, symbols_close, "\u2510", "\\@urcorner", true);
4647defineSymbol(math, ams, symbols_open, "\u2514", "\\@llcorner", true);
4648defineSymbol(math, ams, symbols_close, "\u2518", "\\@lrcorner", true); // AMS Binary Relations
4649
4650defineSymbol(math, ams, rel, "\u2266", "\\leqq", true);
4651defineSymbol(math, ams, rel, "\u2A7D", "\\leqslant", true);
4652defineSymbol(math, ams, rel, "\u2A95", "\\eqslantless", true);
4653defineSymbol(math, ams, rel, "\u2272", "\\lesssim", true);
4654defineSymbol(math, ams, rel, "\u2A85", "\\lessapprox", true);
4655defineSymbol(math, ams, rel, "\u224A", "\\approxeq", true);
4656defineSymbol(math, ams, bin, "\u22D6", "\\lessdot");
4657defineSymbol(math, ams, rel, "\u22D8", "\\lll", true);
4658defineSymbol(math, ams, rel, "\u2276", "\\lessgtr", true);
4659defineSymbol(math, ams, rel, "\u22DA", "\\lesseqgtr", true);
4660defineSymbol(math, ams, rel, "\u2A8B", "\\lesseqqgtr", true);
4661defineSymbol(math, ams, rel, "\u2251", "\\doteqdot");
4662defineSymbol(math, ams, rel, "\u2253", "\\risingdotseq", true);
4663defineSymbol(math, ams, rel, "\u2252", "\\fallingdotseq", true);
4664defineSymbol(math, ams, rel, "\u223D", "\\backsim", true);
4665defineSymbol(math, ams, rel, "\u22CD", "\\backsimeq", true);
4666defineSymbol(math, ams, rel, "\u2AC5", "\\subseteqq", true);
4667defineSymbol(math, ams, rel, "\u22D0", "\\Subset", true);
4668defineSymbol(math, ams, rel, "\u228F", "\\sqsubset", true);
4669defineSymbol(math, ams, rel, "\u227C", "\\preccurlyeq", true);
4670defineSymbol(math, ams, rel, "\u22DE", "\\curlyeqprec", true);
4671defineSymbol(math, ams, rel, "\u227E", "\\precsim", true);
4672defineSymbol(math, ams, rel, "\u2AB7", "\\precapprox", true);
4673defineSymbol(math, ams, rel, "\u22B2", "\\vartriangleleft");
4674defineSymbol(math, ams, rel, "\u22B4", "\\trianglelefteq");
4675defineSymbol(math, ams, rel, "\u22A8", "\\vDash", true);
4676defineSymbol(math, ams, rel, "\u22AA", "\\Vvdash", true);
4677defineSymbol(math, ams, rel, "\u2323", "\\smallsmile");
4678defineSymbol(math, ams, rel, "\u2322", "\\smallfrown");
4679defineSymbol(math, ams, rel, "\u224F", "\\bumpeq", true);
4680defineSymbol(math, ams, rel, "\u224E", "\\Bumpeq", true);
4681defineSymbol(math, ams, rel, "\u2267", "\\geqq", true);
4682defineSymbol(math, ams, rel, "\u2A7E", "\\geqslant", true);
4683defineSymbol(math, ams, rel, "\u2A96", "\\eqslantgtr", true);
4684defineSymbol(math, ams, rel, "\u2273", "\\gtrsim", true);
4685defineSymbol(math, ams, rel, "\u2A86", "\\gtrapprox", true);
4686defineSymbol(math, ams, bin, "\u22D7", "\\gtrdot");
4687defineSymbol(math, ams, rel, "\u22D9", "\\ggg", true);
4688defineSymbol(math, ams, rel, "\u2277", "\\gtrless", true);
4689defineSymbol(math, ams, rel, "\u22DB", "\\gtreqless", true);
4690defineSymbol(math, ams, rel, "\u2A8C", "\\gtreqqless", true);
4691defineSymbol(math, ams, rel, "\u2256", "\\eqcirc", true);
4692defineSymbol(math, ams, rel, "\u2257", "\\circeq", true);
4693defineSymbol(math, ams, rel, "\u225C", "\\triangleq", true);
4694defineSymbol(math, ams, rel, "\u223C", "\\thicksim");
4695defineSymbol(math, ams, rel, "\u2248", "\\thickapprox");
4696defineSymbol(math, ams, rel, "\u2AC6", "\\supseteqq", true);
4697defineSymbol(math, ams, rel, "\u22D1", "\\Supset", true);
4698defineSymbol(math, ams, rel, "\u2290", "\\sqsupset", true);
4699defineSymbol(math, ams, rel, "\u227D", "\\succcurlyeq", true);
4700defineSymbol(math, ams, rel, "\u22DF", "\\curlyeqsucc", true);
4701defineSymbol(math, ams, rel, "\u227F", "\\succsim", true);
4702defineSymbol(math, ams, rel, "\u2AB8", "\\succapprox", true);
4703defineSymbol(math, ams, rel, "\u22B3", "\\vartriangleright");
4704defineSymbol(math, ams, rel, "\u22B5", "\\trianglerighteq");
4705defineSymbol(math, ams, rel, "\u22A9", "\\Vdash", true);
4706defineSymbol(math, ams, rel, "\u2223", "\\shortmid");
4707defineSymbol(math, ams, rel, "\u2225", "\\shortparallel");
4708defineSymbol(math, ams, rel, "\u226C", "\\between", true);
4709defineSymbol(math, ams, rel, "\u22D4", "\\pitchfork", true);
4710defineSymbol(math, ams, rel, "\u221D", "\\varpropto");
4711defineSymbol(math, ams, rel, "\u25C0", "\\blacktriangleleft"); // unicode-math says that \therefore is a mathord atom.
4712// We kept the amssymb atom type, which is rel.
4713
4714defineSymbol(math, ams, rel, "\u2234", "\\therefore", true);
4715defineSymbol(math, ams, rel, "\u220D", "\\backepsilon");
4716defineSymbol(math, ams, rel, "\u25B6", "\\blacktriangleright"); // unicode-math says that \because is a mathord atom.
4717// We kept the amssymb atom type, which is rel.
4718
4719defineSymbol(math, ams, rel, "\u2235", "\\because", true);
4720defineSymbol(math, ams, rel, "\u22D8", "\\llless");
4721defineSymbol(math, ams, rel, "\u22D9", "\\gggtr");
4722defineSymbol(math, ams, bin, "\u22B2", "\\lhd");
4723defineSymbol(math, ams, bin, "\u22B3", "\\rhd");
4724defineSymbol(math, ams, rel, "\u2242", "\\eqsim", true);
4725defineSymbol(math, main, rel, "\u22C8", "\\Join");
4726defineSymbol(math, ams, rel, "\u2251", "\\Doteq", true); // AMS Binary Operators
4727
4728defineSymbol(math, ams, bin, "\u2214", "\\dotplus", true);
4729defineSymbol(math, ams, bin, "\u2216", "\\smallsetminus");
4730defineSymbol(math, ams, bin, "\u22D2", "\\Cap", true);
4731defineSymbol(math, ams, bin, "\u22D3", "\\Cup", true);
4732defineSymbol(math, ams, bin, "\u2A5E", "\\doublebarwedge", true);
4733defineSymbol(math, ams, bin, "\u229F", "\\boxminus", true);
4734defineSymbol(math, ams, bin, "\u229E", "\\boxplus", true);
4735defineSymbol(math, ams, bin, "\u22C7", "\\divideontimes", true);
4736defineSymbol(math, ams, bin, "\u22C9", "\\ltimes", true);
4737defineSymbol(math, ams, bin, "\u22CA", "\\rtimes", true);
4738defineSymbol(math, ams, bin, "\u22CB", "\\leftthreetimes", true);
4739defineSymbol(math, ams, bin, "\u22CC", "\\rightthreetimes", true);
4740defineSymbol(math, ams, bin, "\u22CF", "\\curlywedge", true);
4741defineSymbol(math, ams, bin, "\u22CE", "\\curlyvee", true);
4742defineSymbol(math, ams, bin, "\u229D", "\\circleddash", true);
4743defineSymbol(math, ams, bin, "\u229B", "\\circledast", true);
4744defineSymbol(math, ams, bin, "\u22C5", "\\centerdot");
4745defineSymbol(math, ams, bin, "\u22BA", "\\intercal", true);
4746defineSymbol(math, ams, bin, "\u22D2", "\\doublecap");
4747defineSymbol(math, ams, bin, "\u22D3", "\\doublecup");
4748defineSymbol(math, ams, bin, "\u22A0", "\\boxtimes", true); // AMS Arrows
4749// Note: unicode-math maps \u21e2 to their own function \rightdasharrow.
4750// We'll map it to AMS function \dashrightarrow. It produces the same atom.
4751
4752defineSymbol(math, ams, rel, "\u21E2", "\\dashrightarrow", true); // unicode-math maps \u21e0 to \leftdasharrow. We'll use the AMS synonym.
4753
4754defineSymbol(math, ams, rel, "\u21E0", "\\dashleftarrow", true);
4755defineSymbol(math, ams, rel, "\u21C7", "\\leftleftarrows", true);
4756defineSymbol(math, ams, rel, "\u21C6", "\\leftrightarrows", true);
4757defineSymbol(math, ams, rel, "\u21DA", "\\Lleftarrow", true);
4758defineSymbol(math, ams, rel, "\u219E", "\\twoheadleftarrow", true);
4759defineSymbol(math, ams, rel, "\u21A2", "\\leftarrowtail", true);
4760defineSymbol(math, ams, rel, "\u21AB", "\\looparrowleft", true);
4761defineSymbol(math, ams, rel, "\u21CB", "\\leftrightharpoons", true);
4762defineSymbol(math, ams, rel, "\u21B6", "\\curvearrowleft", true); // unicode-math maps \u21ba to \acwopencirclearrow. We'll use the AMS synonym.
4763
4764defineSymbol(math, ams, rel, "\u21BA", "\\circlearrowleft", true);
4765defineSymbol(math, ams, rel, "\u21B0", "\\Lsh", true);
4766defineSymbol(math, ams, rel, "\u21C8", "\\upuparrows", true);
4767defineSymbol(math, ams, rel, "\u21BF", "\\upharpoonleft", true);
4768defineSymbol(math, ams, rel, "\u21C3", "\\downharpoonleft", true);
4769defineSymbol(math, main, rel, "\u22B6", "\\origof", true); // not in font
4770
4771defineSymbol(math, main, rel, "\u22B7", "\\imageof", true); // not in font
4772
4773defineSymbol(math, ams, rel, "\u22B8", "\\multimap", true);
4774defineSymbol(math, ams, rel, "\u21AD", "\\leftrightsquigarrow", true);
4775defineSymbol(math, ams, rel, "\u21C9", "\\rightrightarrows", true);
4776defineSymbol(math, ams, rel, "\u21C4", "\\rightleftarrows", true);
4777defineSymbol(math, ams, rel, "\u21A0", "\\twoheadrightarrow", true);
4778defineSymbol(math, ams, rel, "\u21A3", "\\rightarrowtail", true);
4779defineSymbol(math, ams, rel, "\u21AC", "\\looparrowright", true);
4780defineSymbol(math, ams, rel, "\u21B7", "\\curvearrowright", true); // unicode-math maps \u21bb to \cwopencirclearrow. We'll use the AMS synonym.
4781
4782defineSymbol(math, ams, rel, "\u21BB", "\\circlearrowright", true);
4783defineSymbol(math, ams, rel, "\u21B1", "\\Rsh", true);
4784defineSymbol(math, ams, rel, "\u21CA", "\\downdownarrows", true);
4785defineSymbol(math, ams, rel, "\u21BE", "\\upharpoonright", true);
4786defineSymbol(math, ams, rel, "\u21C2", "\\downharpoonright", true);
4787defineSymbol(math, ams, rel, "\u21DD", "\\rightsquigarrow", true);
4788defineSymbol(math, ams, rel, "\u21DD", "\\leadsto");
4789defineSymbol(math, ams, rel, "\u21DB", "\\Rrightarrow", true);
4790defineSymbol(math, ams, rel, "\u21BE", "\\restriction");
4791defineSymbol(math, main, textord, "\u2018", "`");
4792defineSymbol(math, main, textord, "$", "\\$");
4793defineSymbol(symbols_text, main, textord, "$", "\\$");
4794defineSymbol(symbols_text, main, textord, "$", "\\textdollar");
4795defineSymbol(math, main, textord, "%", "\\%");
4796defineSymbol(symbols_text, main, textord, "%", "\\%");
4797defineSymbol(math, main, textord, "_", "\\_");
4798defineSymbol(symbols_text, main, textord, "_", "\\_");
4799defineSymbol(symbols_text, main, textord, "_", "\\textunderscore");
4800defineSymbol(math, main, textord, "\u2220", "\\angle", true);
4801defineSymbol(math, main, textord, "\u221E", "\\infty", true);
4802defineSymbol(math, main, textord, "\u2032", "\\prime");
4803defineSymbol(math, main, textord, "\u25B3", "\\triangle");
4804defineSymbol(math, main, textord, "\u0393", "\\Gamma", true);
4805defineSymbol(math, main, textord, "\u0394", "\\Delta", true);
4806defineSymbol(math, main, textord, "\u0398", "\\Theta", true);
4807defineSymbol(math, main, textord, "\u039B", "\\Lambda", true);
4808defineSymbol(math, main, textord, "\u039E", "\\Xi", true);
4809defineSymbol(math, main, textord, "\u03A0", "\\Pi", true);
4810defineSymbol(math, main, textord, "\u03A3", "\\Sigma", true);
4811defineSymbol(math, main, textord, "\u03A5", "\\Upsilon", true);
4812defineSymbol(math, main, textord, "\u03A6", "\\Phi", true);
4813defineSymbol(math, main, textord, "\u03A8", "\\Psi", true);
4814defineSymbol(math, main, textord, "\u03A9", "\\Omega", true);
4815defineSymbol(math, main, textord, "A", "\u0391");
4816defineSymbol(math, main, textord, "B", "\u0392");
4817defineSymbol(math, main, textord, "E", "\u0395");
4818defineSymbol(math, main, textord, "Z", "\u0396");
4819defineSymbol(math, main, textord, "H", "\u0397");
4820defineSymbol(math, main, textord, "I", "\u0399");
4821defineSymbol(math, main, textord, "K", "\u039A");
4822defineSymbol(math, main, textord, "M", "\u039C");
4823defineSymbol(math, main, textord, "N", "\u039D");
4824defineSymbol(math, main, textord, "O", "\u039F");
4825defineSymbol(math, main, textord, "P", "\u03A1");
4826defineSymbol(math, main, textord, "T", "\u03A4");
4827defineSymbol(math, main, textord, "X", "\u03A7");
4828defineSymbol(math, main, textord, "\xAC", "\\neg", true);
4829defineSymbol(math, main, textord, "\xAC", "\\lnot");
4830defineSymbol(math, main, textord, "\u22A4", "\\top");
4831defineSymbol(math, main, textord, "\u22A5", "\\bot");
4832defineSymbol(math, main, textord, "\u2205", "\\emptyset");
4833defineSymbol(math, ams, textord, "\u2205", "\\varnothing");
4834defineSymbol(math, main, mathord, "\u03B1", "\\alpha", true);
4835defineSymbol(math, main, mathord, "\u03B2", "\\beta", true);
4836defineSymbol(math, main, mathord, "\u03B3", "\\gamma", true);
4837defineSymbol(math, main, mathord, "\u03B4", "\\delta", true);
4838defineSymbol(math, main, mathord, "\u03F5", "\\epsilon", true);
4839defineSymbol(math, main, mathord, "\u03B6", "\\zeta", true);
4840defineSymbol(math, main, mathord, "\u03B7", "\\eta", true);
4841defineSymbol(math, main, mathord, "\u03B8", "\\theta", true);
4842defineSymbol(math, main, mathord, "\u03B9", "\\iota", true);
4843defineSymbol(math, main, mathord, "\u03BA", "\\kappa", true);
4844defineSymbol(math, main, mathord, "\u03BB", "\\lambda", true);
4845defineSymbol(math, main, mathord, "\u03BC", "\\mu", true);
4846defineSymbol(math, main, mathord, "\u03BD", "\\nu", true);
4847defineSymbol(math, main, mathord, "\u03BE", "\\xi", true);
4848defineSymbol(math, main, mathord, "\u03BF", "\\omicron", true);
4849defineSymbol(math, main, mathord, "\u03C0", "\\pi", true);
4850defineSymbol(math, main, mathord, "\u03C1", "\\rho", true);
4851defineSymbol(math, main, mathord, "\u03C3", "\\sigma", true);
4852defineSymbol(math, main, mathord, "\u03C4", "\\tau", true);
4853defineSymbol(math, main, mathord, "\u03C5", "\\upsilon", true);
4854defineSymbol(math, main, mathord, "\u03D5", "\\phi", true);
4855defineSymbol(math, main, mathord, "\u03C7", "\\chi", true);
4856defineSymbol(math, main, mathord, "\u03C8", "\\psi", true);
4857defineSymbol(math, main, mathord, "\u03C9", "\\omega", true);
4858defineSymbol(math, main, mathord, "\u03B5", "\\varepsilon", true);
4859defineSymbol(math, main, mathord, "\u03D1", "\\vartheta", true);
4860defineSymbol(math, main, mathord, "\u03D6", "\\varpi", true);
4861defineSymbol(math, main, mathord, "\u03F1", "\\varrho", true);
4862defineSymbol(math, main, mathord, "\u03C2", "\\varsigma", true);
4863defineSymbol(math, main, mathord, "\u03C6", "\\varphi", true);
4864defineSymbol(math, main, bin, "\u2217", "*", true);
4865defineSymbol(math, main, bin, "+", "+");
4866defineSymbol(math, main, bin, "\u2212", "-", true);
4867defineSymbol(math, main, bin, "\u22C5", "\\cdot", true);
4868defineSymbol(math, main, bin, "\u2218", "\\circ", true);
4869defineSymbol(math, main, bin, "\xF7", "\\div", true);
4870defineSymbol(math, main, bin, "\xB1", "\\pm", true);
4871defineSymbol(math, main, bin, "\xD7", "\\times", true);
4872defineSymbol(math, main, bin, "\u2229", "\\cap", true);
4873defineSymbol(math, main, bin, "\u222A", "\\cup", true);
4874defineSymbol(math, main, bin, "\u2216", "\\setminus", true);
4875defineSymbol(math, main, bin, "\u2227", "\\land");
4876defineSymbol(math, main, bin, "\u2228", "\\lor");
4877defineSymbol(math, main, bin, "\u2227", "\\wedge", true);
4878defineSymbol(math, main, bin, "\u2228", "\\vee", true);
4879defineSymbol(math, main, textord, "\u221A", "\\surd");
4880defineSymbol(math, main, symbols_open, "\u27E8", "\\langle", true);
4881defineSymbol(math, main, symbols_open, "\u2223", "\\lvert");
4882defineSymbol(math, main, symbols_open, "\u2225", "\\lVert");
4883defineSymbol(math, main, symbols_close, "?", "?");
4884defineSymbol(math, main, symbols_close, "!", "!");
4885defineSymbol(math, main, symbols_close, "\u27E9", "\\rangle", true);
4886defineSymbol(math, main, symbols_close, "\u2223", "\\rvert");
4887defineSymbol(math, main, symbols_close, "\u2225", "\\rVert");
4888defineSymbol(math, main, rel, "=", "=");
4889defineSymbol(math, main, rel, ":", ":");
4890defineSymbol(math, main, rel, "\u2248", "\\approx", true);
4891defineSymbol(math, main, rel, "\u2245", "\\cong", true);
4892defineSymbol(math, main, rel, "\u2265", "\\ge");
4893defineSymbol(math, main, rel, "\u2265", "\\geq", true);
4894defineSymbol(math, main, rel, "\u2190", "\\gets");
4895defineSymbol(math, main, rel, ">", "\\gt", true);
4896defineSymbol(math, main, rel, "\u2208", "\\in", true);
4897defineSymbol(math, main, rel, "\uE020", "\\@not");
4898defineSymbol(math, main, rel, "\u2282", "\\subset", true);
4899defineSymbol(math, main, rel, "\u2283", "\\supset", true);
4900defineSymbol(math, main, rel, "\u2286", "\\subseteq", true);
4901defineSymbol(math, main, rel, "\u2287", "\\supseteq", true);
4902defineSymbol(math, ams, rel, "\u2288", "\\nsubseteq", true);
4903defineSymbol(math, ams, rel, "\u2289", "\\nsupseteq", true);
4904defineSymbol(math, main, rel, "\u22A8", "\\models");
4905defineSymbol(math, main, rel, "\u2190", "\\leftarrow", true);
4906defineSymbol(math, main, rel, "\u2264", "\\le");
4907defineSymbol(math, main, rel, "\u2264", "\\leq", true);
4908defineSymbol(math, main, rel, "<", "\\lt", true);
4909defineSymbol(math, main, rel, "\u2192", "\\rightarrow", true);
4910defineSymbol(math, main, rel, "\u2192", "\\to");
4911defineSymbol(math, ams, rel, "\u2271", "\\ngeq", true);
4912defineSymbol(math, ams, rel, "\u2270", "\\nleq", true);
4913defineSymbol(math, main, spacing, "\xA0", "\\ ");
4914defineSymbol(math, main, spacing, "\xA0", "\\space"); // Ref: LaTeX Source 2e: \DeclareRobustCommand{\nobreakspace}{%
4915
4916defineSymbol(math, main, spacing, "\xA0", "\\nobreakspace");
4917defineSymbol(symbols_text, main, spacing, "\xA0", "\\ ");
4918defineSymbol(symbols_text, main, spacing, "\xA0", " ");
4919defineSymbol(symbols_text, main, spacing, "\xA0", "\\space");
4920defineSymbol(symbols_text, main, spacing, "\xA0", "\\nobreakspace");
4921defineSymbol(math, main, spacing, null, "\\nobreak");
4922defineSymbol(math, main, spacing, null, "\\allowbreak");
4923defineSymbol(math, main, punct, ",", ",");
4924defineSymbol(math, main, punct, ";", ";");
4925defineSymbol(math, ams, bin, "\u22BC", "\\barwedge", true);
4926defineSymbol(math, ams, bin, "\u22BB", "\\veebar", true);
4927defineSymbol(math, main, bin, "\u2299", "\\odot", true);
4928defineSymbol(math, main, bin, "\u2295", "\\oplus", true);
4929defineSymbol(math, main, bin, "\u2297", "\\otimes", true);
4930defineSymbol(math, main, textord, "\u2202", "\\partial", true);
4931defineSymbol(math, main, bin, "\u2298", "\\oslash", true);
4932defineSymbol(math, ams, bin, "\u229A", "\\circledcirc", true);
4933defineSymbol(math, ams, bin, "\u22A1", "\\boxdot", true);
4934defineSymbol(math, main, bin, "\u25B3", "\\bigtriangleup");
4935defineSymbol(math, main, bin, "\u25BD", "\\bigtriangledown");
4936defineSymbol(math, main, bin, "\u2020", "\\dagger");
4937defineSymbol(math, main, bin, "\u22C4", "\\diamond");
4938defineSymbol(math, main, bin, "\u22C6", "\\star");
4939defineSymbol(math, main, bin, "\u25C3", "\\triangleleft");
4940defineSymbol(math, main, bin, "\u25B9", "\\triangleright");
4941defineSymbol(math, main, symbols_open, "{", "\\{");
4942defineSymbol(symbols_text, main, textord, "{", "\\{");
4943defineSymbol(symbols_text, main, textord, "{", "\\textbraceleft");
4944defineSymbol(math, main, symbols_close, "}", "\\}");
4945defineSymbol(symbols_text, main, textord, "}", "\\}");
4946defineSymbol(symbols_text, main, textord, "}", "\\textbraceright");
4947defineSymbol(math, main, symbols_open, "{", "\\lbrace");
4948defineSymbol(math, main, symbols_close, "}", "\\rbrace");
4949defineSymbol(math, main, symbols_open, "[", "\\lbrack", true);
4950defineSymbol(symbols_text, main, textord, "[", "\\lbrack", true);
4951defineSymbol(math, main, symbols_close, "]", "\\rbrack", true);
4952defineSymbol(symbols_text, main, textord, "]", "\\rbrack", true);
4953defineSymbol(math, main, symbols_open, "(", "\\lparen", true);
4954defineSymbol(math, main, symbols_close, ")", "\\rparen", true);
4955defineSymbol(symbols_text, main, textord, "<", "\\textless", true); // in T1 fontenc
4956
4957defineSymbol(symbols_text, main, textord, ">", "\\textgreater", true); // in T1 fontenc
4958
4959defineSymbol(math, main, symbols_open, "\u230A", "\\lfloor", true);
4960defineSymbol(math, main, symbols_close, "\u230B", "\\rfloor", true);
4961defineSymbol(math, main, symbols_open, "\u2308", "\\lceil", true);
4962defineSymbol(math, main, symbols_close, "\u2309", "\\rceil", true);
4963defineSymbol(math, main, textord, "\\", "\\backslash");
4964defineSymbol(math, main, textord, "\u2223", "|");
4965defineSymbol(math, main, textord, "\u2223", "\\vert");
4966defineSymbol(symbols_text, main, textord, "|", "\\textbar", true); // in T1 fontenc
4967
4968defineSymbol(math, main, textord, "\u2225", "\\|");
4969defineSymbol(math, main, textord, "\u2225", "\\Vert");
4970defineSymbol(symbols_text, main, textord, "\u2225", "\\textbardbl");
4971defineSymbol(symbols_text, main, textord, "~", "\\textasciitilde");
4972defineSymbol(symbols_text, main, textord, "\\", "\\textbackslash");
4973defineSymbol(symbols_text, main, textord, "^", "\\textasciicircum");
4974defineSymbol(math, main, rel, "\u2191", "\\uparrow", true);
4975defineSymbol(math, main, rel, "\u21D1", "\\Uparrow", true);
4976defineSymbol(math, main, rel, "\u2193", "\\downarrow", true);
4977defineSymbol(math, main, rel, "\u21D3", "\\Downarrow", true);
4978defineSymbol(math, main, rel, "\u2195", "\\updownarrow", true);
4979defineSymbol(math, main, rel, "\u21D5", "\\Updownarrow", true);
4980defineSymbol(math, main, op, "\u2210", "\\coprod");
4981defineSymbol(math, main, op, "\u22C1", "\\bigvee");
4982defineSymbol(math, main, op, "\u22C0", "\\bigwedge");
4983defineSymbol(math, main, op, "\u2A04", "\\biguplus");
4984defineSymbol(math, main, op, "\u22C2", "\\bigcap");
4985defineSymbol(math, main, op, "\u22C3", "\\bigcup");
4986defineSymbol(math, main, op, "\u222B", "\\int");
4987defineSymbol(math, main, op, "\u222B", "\\intop");
4988defineSymbol(math, main, op, "\u222C", "\\iint");
4989defineSymbol(math, main, op, "\u222D", "\\iiint");
4990defineSymbol(math, main, op, "\u220F", "\\prod");
4991defineSymbol(math, main, op, "\u2211", "\\sum");
4992defineSymbol(math, main, op, "\u2A02", "\\bigotimes");
4993defineSymbol(math, main, op, "\u2A01", "\\bigoplus");
4994defineSymbol(math, main, op, "\u2A00", "\\bigodot");
4995defineSymbol(math, main, op, "\u222E", "\\oint");
4996defineSymbol(math, main, op, "\u222F", "\\oiint");
4997defineSymbol(math, main, op, "\u2230", "\\oiiint");
4998defineSymbol(math, main, op, "\u2A06", "\\bigsqcup");
4999defineSymbol(math, main, op, "\u222B", "\\smallint");
5000defineSymbol(symbols_text, main, inner, "\u2026", "\\textellipsis");
5001defineSymbol(math, main, inner, "\u2026", "\\mathellipsis");
5002defineSymbol(symbols_text, main, inner, "\u2026", "\\ldots", true);
5003defineSymbol(math, main, inner, "\u2026", "\\ldots", true);
5004defineSymbol(math, main, inner, "\u22EF", "\\@cdots", true);
5005defineSymbol(math, main, inner, "\u22F1", "\\ddots", true);
5006defineSymbol(math, main, textord, "\u22EE", "\\varvdots"); // \vdots is a macro
5007
5008defineSymbol(math, main, accent, "\u02CA", "\\acute");
5009defineSymbol(math, main, accent, "\u02CB", "\\grave");
5010defineSymbol(math, main, accent, "\xA8", "\\ddot");
5011defineSymbol(math, main, accent, "~", "\\tilde");
5012defineSymbol(math, main, accent, "\u02C9", "\\bar");
5013defineSymbol(math, main, accent, "\u02D8", "\\breve");
5014defineSymbol(math, main, accent, "\u02C7", "\\check");
5015defineSymbol(math, main, accent, "^", "\\hat");
5016defineSymbol(math, main, accent, "\u20D7", "\\vec");
5017defineSymbol(math, main, accent, "\u02D9", "\\dot");
5018defineSymbol(math, main, accent, "\u02DA", "\\mathring"); // \imath and \jmath should be invariant to \mathrm, \mathbf, etc., so use PUA
5019
5020defineSymbol(math, main, mathord, "\uE131", "\\@imath");
5021defineSymbol(math, main, mathord, "\uE237", "\\@jmath");
5022defineSymbol(math, main, textord, "\u0131", "\u0131");
5023defineSymbol(math, main, textord, "\u0237", "\u0237");
5024defineSymbol(symbols_text, main, textord, "\u0131", "\\i", true);
5025defineSymbol(symbols_text, main, textord, "\u0237", "\\j", true);
5026defineSymbol(symbols_text, main, textord, "\xDF", "\\ss", true);
5027defineSymbol(symbols_text, main, textord, "\xE6", "\\ae", true);
5028defineSymbol(symbols_text, main, textord, "\u0153", "\\oe", true);
5029defineSymbol(symbols_text, main, textord, "\xF8", "\\o", true);
5030defineSymbol(symbols_text, main, textord, "\xC6", "\\AE", true);
5031defineSymbol(symbols_text, main, textord, "\u0152", "\\OE", true);
5032defineSymbol(symbols_text, main, textord, "\xD8", "\\O", true);
5033defineSymbol(symbols_text, main, accent, "\u02CA", "\\'"); // acute
5034
5035defineSymbol(symbols_text, main, accent, "\u02CB", "\\`"); // grave
5036
5037defineSymbol(symbols_text, main, accent, "\u02C6", "\\^"); // circumflex
5038
5039defineSymbol(symbols_text, main, accent, "\u02DC", "\\~"); // tilde
5040
5041defineSymbol(symbols_text, main, accent, "\u02C9", "\\="); // macron
5042
5043defineSymbol(symbols_text, main, accent, "\u02D8", "\\u"); // breve
5044
5045defineSymbol(symbols_text, main, accent, "\u02D9", "\\."); // dot above
5046
5047defineSymbol(symbols_text, main, accent, "\xB8", "\\c"); // cedilla
5048
5049defineSymbol(symbols_text, main, accent, "\u02DA", "\\r"); // ring above
5050
5051defineSymbol(symbols_text, main, accent, "\u02C7", "\\v"); // caron
5052
5053defineSymbol(symbols_text, main, accent, "\xA8", '\\"'); // diaresis
5054
5055defineSymbol(symbols_text, main, accent, "\u02DD", "\\H"); // double acute
5056
5057defineSymbol(symbols_text, main, accent, "\u25EF", "\\textcircled"); // \bigcirc glyph
5058// These ligatures are detected and created in Parser.js's `formLigatures`.
5059
5060var ligatures = {
5061 "--": true,
5062 "---": true,
5063 "``": true,
5064 "''": true
5065};
5066defineSymbol(symbols_text, main, textord, "\u2013", "--", true);
5067defineSymbol(symbols_text, main, textord, "\u2013", "\\textendash");
5068defineSymbol(symbols_text, main, textord, "\u2014", "---", true);
5069defineSymbol(symbols_text, main, textord, "\u2014", "\\textemdash");
5070defineSymbol(symbols_text, main, textord, "\u2018", "`", true);
5071defineSymbol(symbols_text, main, textord, "\u2018", "\\textquoteleft");
5072defineSymbol(symbols_text, main, textord, "\u2019", "'", true);
5073defineSymbol(symbols_text, main, textord, "\u2019", "\\textquoteright");
5074defineSymbol(symbols_text, main, textord, "\u201C", "``", true);
5075defineSymbol(symbols_text, main, textord, "\u201C", "\\textquotedblleft");
5076defineSymbol(symbols_text, main, textord, "\u201D", "''", true);
5077defineSymbol(symbols_text, main, textord, "\u201D", "\\textquotedblright"); // \degree from gensymb package
5078
5079defineSymbol(math, main, textord, "\xB0", "\\degree", true);
5080defineSymbol(symbols_text, main, textord, "\xB0", "\\degree"); // \textdegree from inputenc package
5081
5082defineSymbol(symbols_text, main, textord, "\xB0", "\\textdegree", true); // TODO: In LaTeX, \pounds can generate a different character in text and math
5083// mode, but among our fonts, only Main-Regular defines this character "163".
5084
5085defineSymbol(math, main, textord, "\xA3", "\\pounds");
5086defineSymbol(math, main, textord, "\xA3", "\\mathsterling", true);
5087defineSymbol(symbols_text, main, textord, "\xA3", "\\pounds");
5088defineSymbol(symbols_text, main, textord, "\xA3", "\\textsterling", true);
5089defineSymbol(math, ams, textord, "\u2720", "\\maltese");
5090defineSymbol(symbols_text, ams, textord, "\u2720", "\\maltese"); // There are lots of symbols which are the same, so we add them in afterwards.
5091// All of these are textords in math mode
5092
5093var mathTextSymbols = "0123456789/@.\"";
5094
5095for (var i = 0; i < mathTextSymbols.length; i++) {
5096 var ch = mathTextSymbols.charAt(i);
5097 defineSymbol(math, main, textord, ch, ch);
5098} // All of these are textords in text mode
5099
5100
5101var textSymbols = "0123456789!@*()-=+\";:?/.,";
5102
5103for (var _i = 0; _i < textSymbols.length; _i++) {
5104 var _ch = textSymbols.charAt(_i);
5105
5106 defineSymbol(symbols_text, main, textord, _ch, _ch);
5107} // All of these are textords in text mode, and mathords in math mode
5108
5109
5110var letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
5111
5112for (var _i2 = 0; _i2 < letters.length; _i2++) {
5113 var _ch2 = letters.charAt(_i2);
5114
5115 defineSymbol(math, main, mathord, _ch2, _ch2);
5116 defineSymbol(symbols_text, main, textord, _ch2, _ch2);
5117} // Blackboard bold and script letters in Unicode range
5118
5119
5120defineSymbol(math, ams, textord, "C", "\u2102"); // blackboard bold
5121
5122defineSymbol(symbols_text, ams, textord, "C", "\u2102");
5123defineSymbol(math, ams, textord, "H", "\u210D");
5124defineSymbol(symbols_text, ams, textord, "H", "\u210D");
5125defineSymbol(math, ams, textord, "N", "\u2115");
5126defineSymbol(symbols_text, ams, textord, "N", "\u2115");
5127defineSymbol(math, ams, textord, "P", "\u2119");
5128defineSymbol(symbols_text, ams, textord, "P", "\u2119");
5129defineSymbol(math, ams, textord, "Q", "\u211A");
5130defineSymbol(symbols_text, ams, textord, "Q", "\u211A");
5131defineSymbol(math, ams, textord, "R", "\u211D");
5132defineSymbol(symbols_text, ams, textord, "R", "\u211D");
5133defineSymbol(math, ams, textord, "Z", "\u2124");
5134defineSymbol(symbols_text, ams, textord, "Z", "\u2124");
5135defineSymbol(math, main, mathord, "h", "\u210E"); // italic h, Planck constant
5136
5137defineSymbol(symbols_text, main, mathord, "h", "\u210E"); // The next loop loads wide (surrogate pair) characters.
5138// We support some letters in the Unicode range U+1D400 to U+1D7FF,
5139// Mathematical Alphanumeric Symbols.
5140// Some editors do not deal well with wide characters. So don't write the
5141// string into this file. Instead, create the string from the surrogate pair.
5142
5143var wideChar = "";
5144
5145for (var _i3 = 0; _i3 < letters.length; _i3++) {
5146 var _ch3 = letters.charAt(_i3); // The hex numbers in the next line are a surrogate pair.
5147 // 0xD835 is the high surrogate for all letters in the range we support.
5148 // 0xDC00 is the low surrogate for bold A.
5149
5150
5151 wideChar = String.fromCharCode(0xD835, 0xDC00 + _i3); // A-Z a-z bold
5152
5153 defineSymbol(math, main, mathord, _ch3, wideChar);
5154 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5155 wideChar = String.fromCharCode(0xD835, 0xDC34 + _i3); // A-Z a-z italic
5156
5157 defineSymbol(math, main, mathord, _ch3, wideChar);
5158 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5159 wideChar = String.fromCharCode(0xD835, 0xDC68 + _i3); // A-Z a-z bold italic
5160
5161 defineSymbol(math, main, mathord, _ch3, wideChar);
5162 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5163 wideChar = String.fromCharCode(0xD835, 0xDD04 + _i3); // A-Z a-z Fractur
5164
5165 defineSymbol(math, main, mathord, _ch3, wideChar);
5166 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5167 wideChar = String.fromCharCode(0xD835, 0xDDA0 + _i3); // A-Z a-z sans-serif
5168
5169 defineSymbol(math, main, mathord, _ch3, wideChar);
5170 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5171 wideChar = String.fromCharCode(0xD835, 0xDDD4 + _i3); // A-Z a-z sans bold
5172
5173 defineSymbol(math, main, mathord, _ch3, wideChar);
5174 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5175 wideChar = String.fromCharCode(0xD835, 0xDE08 + _i3); // A-Z a-z sans italic
5176
5177 defineSymbol(math, main, mathord, _ch3, wideChar);
5178 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5179 wideChar = String.fromCharCode(0xD835, 0xDE70 + _i3); // A-Z a-z monospace
5180
5181 defineSymbol(math, main, mathord, _ch3, wideChar);
5182 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5183
5184 if (_i3 < 26) {
5185 // KaTeX fonts have only capital letters for blackboard bold and script.
5186 // See exception for k below.
5187 wideChar = String.fromCharCode(0xD835, 0xDD38 + _i3); // A-Z double struck
5188
5189 defineSymbol(math, main, mathord, _ch3, wideChar);
5190 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5191 wideChar = String.fromCharCode(0xD835, 0xDC9C + _i3); // A-Z script
5192
5193 defineSymbol(math, main, mathord, _ch3, wideChar);
5194 defineSymbol(symbols_text, main, textord, _ch3, wideChar);
5195 } // TODO: Add bold script when it is supported by a KaTeX font.
5196
5197} // "k" is the only double struck lower case letter in the KaTeX fonts.
5198
5199
5200wideChar = String.fromCharCode(0xD835, 0xDD5C); // k double struck
5201
5202defineSymbol(math, main, mathord, "k", wideChar);
5203defineSymbol(symbols_text, main, textord, "k", wideChar); // Next, some wide character numerals
5204
5205for (var _i4 = 0; _i4 < 10; _i4++) {
5206 var _ch4 = _i4.toString();
5207
5208 wideChar = String.fromCharCode(0xD835, 0xDFCE + _i4); // 0-9 bold
5209
5210 defineSymbol(math, main, mathord, _ch4, wideChar);
5211 defineSymbol(symbols_text, main, textord, _ch4, wideChar);
5212 wideChar = String.fromCharCode(0xD835, 0xDFE2 + _i4); // 0-9 sans serif
5213
5214 defineSymbol(math, main, mathord, _ch4, wideChar);
5215 defineSymbol(symbols_text, main, textord, _ch4, wideChar);
5216 wideChar = String.fromCharCode(0xD835, 0xDFEC + _i4); // 0-9 bold sans
5217
5218 defineSymbol(math, main, mathord, _ch4, wideChar);
5219 defineSymbol(symbols_text, main, textord, _ch4, wideChar);
5220 wideChar = String.fromCharCode(0xD835, 0xDFF6 + _i4); // 0-9 monospace
5221
5222 defineSymbol(math, main, mathord, _ch4, wideChar);
5223 defineSymbol(symbols_text, main, textord, _ch4, wideChar);
5224} // We add these Latin-1 letters as symbols for backwards-compatibility,
5225// but they are not actually in the font, nor are they supported by the
5226// Unicode accent mechanism, so they fall back to Times font and look ugly.
5227// TODO(edemaine): Fix this.
5228
5229
5230var extraLatin = "\xD0\xDE\xFE";
5231
5232for (var _i5 = 0; _i5 < extraLatin.length; _i5++) {
5233 var _ch5 = extraLatin.charAt(_i5);
5234
5235 defineSymbol(math, main, mathord, _ch5, _ch5);
5236 defineSymbol(symbols_text, main, textord, _ch5, _ch5);
5237}
5238;// CONCATENATED MODULE: ./src/wide-character.js
5239/**
5240 * This file provides support for Unicode range U+1D400 to U+1D7FF,
5241 * Mathematical Alphanumeric Symbols.
5242 *
5243 * Function wideCharacterFont takes a wide character as input and returns
5244 * the font information necessary to render it properly.
5245 */
5246
5247/**
5248 * Data below is from https://www.unicode.org/charts/PDF/U1D400.pdf
5249 * That document sorts characters into groups by font type, say bold or italic.
5250 *
5251 * In the arrays below, each subarray consists three elements:
5252 * * The CSS class of that group when in math mode.
5253 * * The CSS class of that group when in text mode.
5254 * * The font name, so that KaTeX can get font metrics.
5255 */
5256
5257var wideLatinLetterData = [["mathbf", "textbf", "Main-Bold"], // A-Z bold upright
5258["mathbf", "textbf", "Main-Bold"], // a-z bold upright
5259["mathnormal", "textit", "Math-Italic"], // A-Z italic
5260["mathnormal", "textit", "Math-Italic"], // a-z italic
5261["boldsymbol", "boldsymbol", "Main-BoldItalic"], // A-Z bold italic
5262["boldsymbol", "boldsymbol", "Main-BoldItalic"], // a-z bold italic
5263// Map fancy A-Z letters to script, not calligraphic.
5264// This aligns with unicode-math and math fonts (except Cambria Math).
5265["mathscr", "textscr", "Script-Regular"], // A-Z script
5266["", "", ""], // a-z script. No font
5267["", "", ""], // A-Z bold script. No font
5268["", "", ""], // a-z bold script. No font
5269["mathfrak", "textfrak", "Fraktur-Regular"], // A-Z Fraktur
5270["mathfrak", "textfrak", "Fraktur-Regular"], // a-z Fraktur
5271["mathbb", "textbb", "AMS-Regular"], // A-Z double-struck
5272["mathbb", "textbb", "AMS-Regular"], // k double-struck
5273["", "", ""], // A-Z bold Fraktur No font metrics
5274["", "", ""], // a-z bold Fraktur. No font.
5275["mathsf", "textsf", "SansSerif-Regular"], // A-Z sans-serif
5276["mathsf", "textsf", "SansSerif-Regular"], // a-z sans-serif
5277["mathboldsf", "textboldsf", "SansSerif-Bold"], // A-Z bold sans-serif
5278["mathboldsf", "textboldsf", "SansSerif-Bold"], // a-z bold sans-serif
5279["mathitsf", "textitsf", "SansSerif-Italic"], // A-Z italic sans-serif
5280["mathitsf", "textitsf", "SansSerif-Italic"], // a-z italic sans-serif
5281["", "", ""], // A-Z bold italic sans. No font
5282["", "", ""], // a-z bold italic sans. No font
5283["mathtt", "texttt", "Typewriter-Regular"], // A-Z monospace
5284["mathtt", "texttt", "Typewriter-Regular"] // a-z monospace
5285];
5286var wideNumeralData = [["mathbf", "textbf", "Main-Bold"], // 0-9 bold
5287["", "", ""], // 0-9 double-struck. No KaTeX font.
5288["mathsf", "textsf", "SansSerif-Regular"], // 0-9 sans-serif
5289["mathboldsf", "textboldsf", "SansSerif-Bold"], // 0-9 bold sans-serif
5290["mathtt", "texttt", "Typewriter-Regular"] // 0-9 monospace
5291];
5292var wideCharacterFont = function wideCharacterFont(wideChar, mode) {
5293 // IE doesn't support codePointAt(). So work with the surrogate pair.
5294 var H = wideChar.charCodeAt(0); // high surrogate
5295
5296 var L = wideChar.charCodeAt(1); // low surrogate
5297
5298 var codePoint = (H - 0xD800) * 0x400 + (L - 0xDC00) + 0x10000;
5299 var j = mode === "math" ? 0 : 1; // column index for CSS class.
5300
5301 if (0x1D400 <= codePoint && codePoint < 0x1D6A4) {
5302 // wideLatinLetterData contains exactly 26 chars on each row.
5303 // So we can calculate the relevant row. No traverse necessary.
5304 var i = Math.floor((codePoint - 0x1D400) / 26);
5305 return [wideLatinLetterData[i][2], wideLatinLetterData[i][j]];
5306 } else if (0x1D7CE <= codePoint && codePoint <= 0x1D7FF) {
5307 // Numerals, ten per row.
5308 var _i = Math.floor((codePoint - 0x1D7CE) / 10);
5309
5310 return [wideNumeralData[_i][2], wideNumeralData[_i][j]];
5311 } else if (codePoint === 0x1D6A5 || codePoint === 0x1D6A6) {
5312 // dotless i or j
5313 return [wideLatinLetterData[0][2], wideLatinLetterData[0][j]];
5314 } else if (0x1D6A6 < codePoint && codePoint < 0x1D7CE) {
5315 // Greek letters. Not supported, yet.
5316 return ["", ""];
5317 } else {
5318 // We don't support any wide characters outside 1D400–1D7FF.
5319 throw new src_ParseError("Unsupported character: " + wideChar);
5320 }
5321};
5322;// CONCATENATED MODULE: ./src/buildCommon.js
5323/* eslint no-console:0 */
5324
5325/**
5326 * This module contains general functions that can be used for building
5327 * different kinds of domTree nodes in a consistent manner.
5328 */
5329
5330
5331
5332
5333
5334
5335
5336/**
5337 * Looks up the given symbol in fontMetrics, after applying any symbol
5338 * replacements defined in symbol.js
5339 */
5340var lookupSymbol = function lookupSymbol(value, // TODO(#963): Use a union type for this.
5341fontName, mode) {
5342 // Replace the value with its replaced value from symbol.js
5343 if (src_symbols[mode][value] && src_symbols[mode][value].replace) {
5344 value = src_symbols[mode][value].replace;
5345 }
5346
5347 return {
5348 value: value,
5349 metrics: getCharacterMetrics(value, fontName, mode)
5350 };
5351};
5352/**
5353 * Makes a symbolNode after translation via the list of symbols in symbols.js.
5354 * Correctly pulls out metrics for the character, and optionally takes a list of
5355 * classes to be attached to the node.
5356 *
5357 * TODO: make argument order closer to makeSpan
5358 * TODO: add a separate argument for math class (e.g. `mop`, `mbin`), which
5359 * should if present come first in `classes`.
5360 * TODO(#953): Make `options` mandatory and always pass it in.
5361 */
5362
5363
5364var makeSymbol = function makeSymbol(value, fontName, mode, options, classes) {
5365 var lookup = lookupSymbol(value, fontName, mode);
5366 var metrics = lookup.metrics;
5367 value = lookup.value;
5368 var symbolNode;
5369
5370 if (metrics) {
5371 var italic = metrics.italic;
5372
5373 if (mode === "text" || options && options.font === "mathit") {
5374 italic = 0;
5375 }
5376
5377 symbolNode = new SymbolNode(value, metrics.height, metrics.depth, italic, metrics.skew, metrics.width, classes);
5378 } else {
5379 // TODO(emily): Figure out a good way to only print this in development
5380 typeof console !== "undefined" && console.warn("No character metrics " + ("for '" + value + "' in style '" + fontName + "' and mode '" + mode + "'"));
5381 symbolNode = new SymbolNode(value, 0, 0, 0, 0, 0, classes);
5382 }
5383
5384 if (options) {
5385 symbolNode.maxFontSize = options.sizeMultiplier;
5386
5387 if (options.style.isTight()) {
5388 symbolNode.classes.push("mtight");
5389 }
5390
5391 var color = options.getColor();
5392
5393 if (color) {
5394 symbolNode.style.color = color;
5395 }
5396 }
5397
5398 return symbolNode;
5399};
5400/**
5401 * Makes a symbol in Main-Regular or AMS-Regular.
5402 * Used for rel, bin, open, close, inner, and punct.
5403 */
5404
5405
5406var mathsym = function mathsym(value, mode, options, classes) {
5407 if (classes === void 0) {
5408 classes = [];
5409 }
5410
5411 // Decide what font to render the symbol in by its entry in the symbols
5412 // table.
5413 // Have a special case for when the value = \ because the \ is used as a
5414 // textord in unsupported command errors but cannot be parsed as a regular
5415 // text ordinal and is therefore not present as a symbol in the symbols
5416 // table for text, as well as a special case for boldsymbol because it
5417 // can be used for bold + and -
5418 if (options.font === "boldsymbol" && lookupSymbol(value, "Main-Bold", mode).metrics) {
5419 return makeSymbol(value, "Main-Bold", mode, options, classes.concat(["mathbf"]));
5420 } else if (value === "\\" || src_symbols[mode][value].font === "main") {
5421 return makeSymbol(value, "Main-Regular", mode, options, classes);
5422 } else {
5423 return makeSymbol(value, "AMS-Regular", mode, options, classes.concat(["amsrm"]));
5424 }
5425};
5426/**
5427 * Determines which of the two font names (Main-Bold and Math-BoldItalic) and
5428 * corresponding style tags (mathbf or boldsymbol) to use for font "boldsymbol",
5429 * depending on the symbol. Use this function instead of fontMap for font
5430 * "boldsymbol".
5431 */
5432
5433
5434var boldsymbol = function boldsymbol(value, mode, options, classes, type) {
5435 if (type !== "textord" && lookupSymbol(value, "Math-BoldItalic", mode).metrics) {
5436 return {
5437 fontName: "Math-BoldItalic",
5438 fontClass: "boldsymbol"
5439 };
5440 } else {
5441 // Some glyphs do not exist in Math-BoldItalic so we need to use
5442 // Main-Bold instead.
5443 return {
5444 fontName: "Main-Bold",
5445 fontClass: "mathbf"
5446 };
5447 }
5448};
5449/**
5450 * Makes either a mathord or textord in the correct font and color.
5451 */
5452
5453
5454var makeOrd = function makeOrd(group, options, type) {
5455 var mode = group.mode;
5456 var text = group.text;
5457 var classes = ["mord"]; // Math mode or Old font (i.e. \rm)
5458
5459 var isFont = mode === "math" || mode === "text" && options.font;
5460 var fontOrFamily = isFont ? options.font : options.fontFamily;
5461
5462 if (text.charCodeAt(0) === 0xD835) {
5463 // surrogate pairs get special treatment
5464 var _wideCharacterFont = wideCharacterFont(text, mode),
5465 wideFontName = _wideCharacterFont[0],
5466 wideFontClass = _wideCharacterFont[1];
5467
5468 return makeSymbol(text, wideFontName, mode, options, classes.concat(wideFontClass));
5469 } else if (fontOrFamily) {
5470 var fontName;
5471 var fontClasses;
5472
5473 if (fontOrFamily === "boldsymbol") {
5474 var fontData = boldsymbol(text, mode, options, classes, type);
5475 fontName = fontData.fontName;
5476 fontClasses = [fontData.fontClass];
5477 } else if (isFont) {
5478 fontName = fontMap[fontOrFamily].fontName;
5479 fontClasses = [fontOrFamily];
5480 } else {
5481 fontName = retrieveTextFontName(fontOrFamily, options.fontWeight, options.fontShape);
5482 fontClasses = [fontOrFamily, options.fontWeight, options.fontShape];
5483 }
5484
5485 if (lookupSymbol(text, fontName, mode).metrics) {
5486 return makeSymbol(text, fontName, mode, options, classes.concat(fontClasses));
5487 } else if (ligatures.hasOwnProperty(text) && fontName.substr(0, 10) === "Typewriter") {
5488 // Deconstruct ligatures in monospace fonts (\texttt, \tt).
5489 var parts = [];
5490
5491 for (var i = 0; i < text.length; i++) {
5492 parts.push(makeSymbol(text[i], fontName, mode, options, classes.concat(fontClasses)));
5493 }
5494
5495 return makeFragment(parts);
5496 }
5497 } // Makes a symbol in the default font for mathords and textords.
5498
5499
5500 if (type === "mathord") {
5501 return makeSymbol(text, "Math-Italic", mode, options, classes.concat(["mathnormal"]));
5502 } else if (type === "textord") {
5503 var font = src_symbols[mode][text] && src_symbols[mode][text].font;
5504
5505 if (font === "ams") {
5506 var _fontName = retrieveTextFontName("amsrm", options.fontWeight, options.fontShape);
5507
5508 return makeSymbol(text, _fontName, mode, options, classes.concat("amsrm", options.fontWeight, options.fontShape));
5509 } else if (font === "main" || !font) {
5510 var _fontName2 = retrieveTextFontName("textrm", options.fontWeight, options.fontShape);
5511
5512 return makeSymbol(text, _fontName2, mode, options, classes.concat(options.fontWeight, options.fontShape));
5513 } else {
5514 // fonts added by plugins
5515 var _fontName3 = retrieveTextFontName(font, options.fontWeight, options.fontShape); // We add font name as a css class
5516
5517
5518 return makeSymbol(text, _fontName3, mode, options, classes.concat(_fontName3, options.fontWeight, options.fontShape));
5519 }
5520 } else {
5521 throw new Error("unexpected type: " + type + " in makeOrd");
5522 }
5523};
5524/**
5525 * Returns true if subsequent symbolNodes have the same classes, skew, maxFont,
5526 * and styles.
5527 */
5528
5529
5530var canCombine = function canCombine(prev, next) {
5531 if (createClass(prev.classes) !== createClass(next.classes) || prev.skew !== next.skew || prev.maxFontSize !== next.maxFontSize) {
5532 return false;
5533 } // If prev and next both are just "mbin"s or "mord"s we don't combine them
5534 // so that the proper spacing can be preserved.
5535
5536
5537 if (prev.classes.length === 1) {
5538 var cls = prev.classes[0];
5539
5540 if (cls === "mbin" || cls === "mord") {
5541 return false;
5542 }
5543 }
5544
5545 for (var style in prev.style) {
5546 if (prev.style.hasOwnProperty(style) && prev.style[style] !== next.style[style]) {
5547 return false;
5548 }
5549 }
5550
5551 for (var _style in next.style) {
5552 if (next.style.hasOwnProperty(_style) && prev.style[_style] !== next.style[_style]) {
5553 return false;
5554 }
5555 }
5556
5557 return true;
5558};
5559/**
5560 * Combine consecutive domTree.symbolNodes into a single symbolNode.
5561 * Note: this function mutates the argument.
5562 */
5563
5564
5565var tryCombineChars = function tryCombineChars(chars) {
5566 for (var i = 0; i < chars.length - 1; i++) {
5567 var prev = chars[i];
5568 var next = chars[i + 1];
5569
5570 if (prev instanceof SymbolNode && next instanceof SymbolNode && canCombine(prev, next)) {
5571 prev.text += next.text;
5572 prev.height = Math.max(prev.height, next.height);
5573 prev.depth = Math.max(prev.depth, next.depth); // Use the last character's italic correction since we use
5574 // it to add padding to the right of the span created from
5575 // the combined characters.
5576
5577 prev.italic = next.italic;
5578 chars.splice(i + 1, 1);
5579 i--;
5580 }
5581 }
5582
5583 return chars;
5584};
5585/**
5586 * Calculate the height, depth, and maxFontSize of an element based on its
5587 * children.
5588 */
5589
5590
5591var sizeElementFromChildren = function sizeElementFromChildren(elem) {
5592 var height = 0;
5593 var depth = 0;
5594 var maxFontSize = 0;
5595
5596 for (var i = 0; i < elem.children.length; i++) {
5597 var child = elem.children[i];
5598
5599 if (child.height > height) {
5600 height = child.height;
5601 }
5602
5603 if (child.depth > depth) {
5604 depth = child.depth;
5605 }
5606
5607 if (child.maxFontSize > maxFontSize) {
5608 maxFontSize = child.maxFontSize;
5609 }
5610 }
5611
5612 elem.height = height;
5613 elem.depth = depth;
5614 elem.maxFontSize = maxFontSize;
5615};
5616/**
5617 * Makes a span with the given list of classes, list of children, and options.
5618 *
5619 * TODO(#953): Ensure that `options` is always provided (currently some call
5620 * sites don't pass it) and make the type below mandatory.
5621 * TODO: add a separate argument for math class (e.g. `mop`, `mbin`), which
5622 * should if present come first in `classes`.
5623 */
5624
5625
5626var makeSpan = function makeSpan(classes, children, options, style) {
5627 var span = new Span(classes, children, options, style);
5628 sizeElementFromChildren(span);
5629 return span;
5630}; // SVG one is simpler -- doesn't require height, depth, max-font setting.
5631// This is also a separate method for typesafety.
5632
5633
5634var makeSvgSpan = function makeSvgSpan(classes, children, options, style) {
5635 return new Span(classes, children, options, style);
5636};
5637
5638var makeLineSpan = function makeLineSpan(className, options, thickness) {
5639 var line = makeSpan([className], [], options);
5640 line.height = Math.max(thickness || options.fontMetrics().defaultRuleThickness, options.minRuleThickness);
5641 line.style.borderBottomWidth = makeEm(line.height);
5642 line.maxFontSize = 1.0;
5643 return line;
5644};
5645/**
5646 * Makes an anchor with the given href, list of classes, list of children,
5647 * and options.
5648 */
5649
5650
5651var makeAnchor = function makeAnchor(href, classes, children, options) {
5652 var anchor = new Anchor(href, classes, children, options);
5653 sizeElementFromChildren(anchor);
5654 return anchor;
5655};
5656/**
5657 * Makes a document fragment with the given list of children.
5658 */
5659
5660
5661var makeFragment = function makeFragment(children) {
5662 var fragment = new DocumentFragment(children);
5663 sizeElementFromChildren(fragment);
5664 return fragment;
5665};
5666/**
5667 * Wraps group in a span if it's a document fragment, allowing to apply classes
5668 * and styles
5669 */
5670
5671
5672var wrapFragment = function wrapFragment(group, options) {
5673 if (group instanceof DocumentFragment) {
5674 return makeSpan([], [group], options);
5675 }
5676
5677 return group;
5678}; // These are exact object types to catch typos in the names of the optional fields.
5679
5680
5681// Computes the updated `children` list and the overall depth.
5682//
5683// This helper function for makeVList makes it easier to enforce type safety by
5684// allowing early exits (returns) in the logic.
5685var getVListChildrenAndDepth = function getVListChildrenAndDepth(params) {
5686 if (params.positionType === "individualShift") {
5687 var oldChildren = params.children;
5688 var children = [oldChildren[0]]; // Add in kerns to the list of params.children to get each element to be
5689 // shifted to the correct specified shift
5690
5691 var _depth = -oldChildren[0].shift - oldChildren[0].elem.depth;
5692
5693 var currPos = _depth;
5694
5695 for (var i = 1; i < oldChildren.length; i++) {
5696 var diff = -oldChildren[i].shift - currPos - oldChildren[i].elem.depth;
5697 var size = diff - (oldChildren[i - 1].elem.height + oldChildren[i - 1].elem.depth);
5698 currPos = currPos + diff;
5699 children.push({
5700 type: "kern",
5701 size: size
5702 });
5703 children.push(oldChildren[i]);
5704 }
5705
5706 return {
5707 children: children,
5708 depth: _depth
5709 };
5710 }
5711
5712 var depth;
5713
5714 if (params.positionType === "top") {
5715 // We always start at the bottom, so calculate the bottom by adding up
5716 // all the sizes
5717 var bottom = params.positionData;
5718
5719 for (var _i = 0; _i < params.children.length; _i++) {
5720 var child = params.children[_i];
5721 bottom -= child.type === "kern" ? child.size : child.elem.height + child.elem.depth;
5722 }
5723
5724 depth = bottom;
5725 } else if (params.positionType === "bottom") {
5726 depth = -params.positionData;
5727 } else {
5728 var firstChild = params.children[0];
5729
5730 if (firstChild.type !== "elem") {
5731 throw new Error('First child must have type "elem".');
5732 }
5733
5734 if (params.positionType === "shift") {
5735 depth = -firstChild.elem.depth - params.positionData;
5736 } else if (params.positionType === "firstBaseline") {
5737 depth = -firstChild.elem.depth;
5738 } else {
5739 throw new Error("Invalid positionType " + params.positionType + ".");
5740 }
5741 }
5742
5743 return {
5744 children: params.children,
5745 depth: depth
5746 };
5747};
5748/**
5749 * Makes a vertical list by stacking elements and kerns on top of each other.
5750 * Allows for many different ways of specifying the positioning method.
5751 *
5752 * See VListParam documentation above.
5753 */
5754
5755
5756var makeVList = function makeVList(params, options) {
5757 var _getVListChildrenAndD = getVListChildrenAndDepth(params),
5758 children = _getVListChildrenAndD.children,
5759 depth = _getVListChildrenAndD.depth; // Create a strut that is taller than any list item. The strut is added to
5760 // each item, where it will determine the item's baseline. Since it has
5761 // `overflow:hidden`, the strut's top edge will sit on the item's line box's
5762 // top edge and the strut's bottom edge will sit on the item's baseline,
5763 // with no additional line-height spacing. This allows the item baseline to
5764 // be positioned precisely without worrying about font ascent and
5765 // line-height.
5766
5767
5768 var pstrutSize = 0;
5769
5770 for (var i = 0; i < children.length; i++) {
5771 var child = children[i];
5772
5773 if (child.type === "elem") {
5774 var elem = child.elem;
5775 pstrutSize = Math.max(pstrutSize, elem.maxFontSize, elem.height);
5776 }
5777 }
5778
5779 pstrutSize += 2;
5780 var pstrut = makeSpan(["pstrut"], []);
5781 pstrut.style.height = makeEm(pstrutSize); // Create a new list of actual children at the correct offsets
5782
5783 var realChildren = [];
5784 var minPos = depth;
5785 var maxPos = depth;
5786 var currPos = depth;
5787
5788 for (var _i2 = 0; _i2 < children.length; _i2++) {
5789 var _child = children[_i2];
5790
5791 if (_child.type === "kern") {
5792 currPos += _child.size;
5793 } else {
5794 var _elem = _child.elem;
5795 var classes = _child.wrapperClasses || [];
5796 var style = _child.wrapperStyle || {};
5797 var childWrap = makeSpan(classes, [pstrut, _elem], undefined, style);
5798 childWrap.style.top = makeEm(-pstrutSize - currPos - _elem.depth);
5799
5800 if (_child.marginLeft) {
5801 childWrap.style.marginLeft = _child.marginLeft;
5802 }
5803
5804 if (_child.marginRight) {
5805 childWrap.style.marginRight = _child.marginRight;
5806 }
5807
5808 realChildren.push(childWrap);
5809 currPos += _elem.height + _elem.depth;
5810 }
5811
5812 minPos = Math.min(minPos, currPos);
5813 maxPos = Math.max(maxPos, currPos);
5814 } // The vlist contents go in a table-cell with `vertical-align:bottom`.
5815 // This cell's bottom edge will determine the containing table's baseline
5816 // without overly expanding the containing line-box.
5817
5818
5819 var vlist = makeSpan(["vlist"], realChildren);
5820 vlist.style.height = makeEm(maxPos); // A second row is used if necessary to represent the vlist's depth.
5821
5822 var rows;
5823
5824 if (minPos < 0) {
5825 // We will define depth in an empty span with display: table-cell.
5826 // It should render with the height that we define. But Chrome, in
5827 // contenteditable mode only, treats that span as if it contains some
5828 // text content. And that min-height over-rides our desired height.
5829 // So we put another empty span inside the depth strut span.
5830 var emptySpan = makeSpan([], []);
5831 var depthStrut = makeSpan(["vlist"], [emptySpan]);
5832 depthStrut.style.height = makeEm(-minPos); // Safari wants the first row to have inline content; otherwise it
5833 // puts the bottom of the *second* row on the baseline.
5834
5835 var topStrut = makeSpan(["vlist-s"], [new SymbolNode("\u200B")]);
5836 rows = [makeSpan(["vlist-r"], [vlist, topStrut]), makeSpan(["vlist-r"], [depthStrut])];
5837 } else {
5838 rows = [makeSpan(["vlist-r"], [vlist])];
5839 }
5840
5841 var vtable = makeSpan(["vlist-t"], rows);
5842
5843 if (rows.length === 2) {
5844 vtable.classes.push("vlist-t2");
5845 }
5846
5847 vtable.height = maxPos;
5848 vtable.depth = -minPos;
5849 return vtable;
5850}; // Glue is a concept from TeX which is a flexible space between elements in
5851// either a vertical or horizontal list. In KaTeX, at least for now, it's
5852// static space between elements in a horizontal layout.
5853
5854
5855var makeGlue = function makeGlue(measurement, options) {
5856 // Make an empty span for the space
5857 var rule = makeSpan(["mspace"], [], options);
5858 var size = calculateSize(measurement, options);
5859 rule.style.marginRight = makeEm(size);
5860 return rule;
5861}; // Takes font options, and returns the appropriate fontLookup name
5862
5863
5864var retrieveTextFontName = function retrieveTextFontName(fontFamily, fontWeight, fontShape) {
5865 var baseFontName = "";
5866
5867 switch (fontFamily) {
5868 case "amsrm":
5869 baseFontName = "AMS";
5870 break;
5871
5872 case "textrm":
5873 baseFontName = "Main";
5874 break;
5875
5876 case "textsf":
5877 baseFontName = "SansSerif";
5878 break;
5879
5880 case "texttt":
5881 baseFontName = "Typewriter";
5882 break;
5883
5884 default:
5885 baseFontName = fontFamily;
5886 // use fonts added by a plugin
5887 }
5888
5889 var fontStylesName;
5890
5891 if (fontWeight === "textbf" && fontShape === "textit") {
5892 fontStylesName = "BoldItalic";
5893 } else if (fontWeight === "textbf") {
5894 fontStylesName = "Bold";
5895 } else if (fontWeight === "textit") {
5896 fontStylesName = "Italic";
5897 } else {
5898 fontStylesName = "Regular";
5899 }
5900
5901 return baseFontName + "-" + fontStylesName;
5902};
5903/**
5904 * Maps TeX font commands to objects containing:
5905 * - variant: string used for "mathvariant" attribute in buildMathML.js
5906 * - fontName: the "style" parameter to fontMetrics.getCharacterMetrics
5907 */
5908// A map between tex font commands an MathML mathvariant attribute values
5909
5910
5911var fontMap = {
5912 // styles
5913 "mathbf": {
5914 variant: "bold",
5915 fontName: "Main-Bold"
5916 },
5917 "mathrm": {
5918 variant: "normal",
5919 fontName: "Main-Regular"
5920 },
5921 "textit": {
5922 variant: "italic",
5923 fontName: "Main-Italic"
5924 },
5925 "mathit": {
5926 variant: "italic",
5927 fontName: "Main-Italic"
5928 },
5929 "mathnormal": {
5930 variant: "italic",
5931 fontName: "Math-Italic"
5932 },
5933 // "boldsymbol" is missing because they require the use of multiple fonts:
5934 // Math-BoldItalic and Main-Bold. This is handled by a special case in
5935 // makeOrd which ends up calling boldsymbol.
5936 // families
5937 "mathbb": {
5938 variant: "double-struck",
5939 fontName: "AMS-Regular"
5940 },
5941 "mathcal": {
5942 variant: "script",
5943 fontName: "Caligraphic-Regular"
5944 },
5945 "mathfrak": {
5946 variant: "fraktur",
5947 fontName: "Fraktur-Regular"
5948 },
5949 "mathscr": {
5950 variant: "script",
5951 fontName: "Script-Regular"
5952 },
5953 "mathsf": {
5954 variant: "sans-serif",
5955 fontName: "SansSerif-Regular"
5956 },
5957 "mathtt": {
5958 variant: "monospace",
5959 fontName: "Typewriter-Regular"
5960 }
5961};
5962var svgData = {
5963 // path, width, height
5964 vec: ["vec", 0.471, 0.714],
5965 // values from the font glyph
5966 oiintSize1: ["oiintSize1", 0.957, 0.499],
5967 // oval to overlay the integrand
5968 oiintSize2: ["oiintSize2", 1.472, 0.659],
5969 oiiintSize1: ["oiiintSize1", 1.304, 0.499],
5970 oiiintSize2: ["oiiintSize2", 1.98, 0.659]
5971};
5972
5973var staticSvg = function staticSvg(value, options) {
5974 // Create a span with inline SVG for the element.
5975 var _svgData$value = svgData[value],
5976 pathName = _svgData$value[0],
5977 width = _svgData$value[1],
5978 height = _svgData$value[2];
5979 var path = new PathNode(pathName);
5980 var svgNode = new SvgNode([path], {
5981 "width": makeEm(width),
5982 "height": makeEm(height),
5983 // Override CSS rule `.katex svg { width: 100% }`
5984 "style": "width:" + makeEm(width),
5985 "viewBox": "0 0 " + 1000 * width + " " + 1000 * height,
5986 "preserveAspectRatio": "xMinYMin"
5987 });
5988 var span = makeSvgSpan(["overlay"], [svgNode], options);
5989 span.height = height;
5990 span.style.height = makeEm(height);
5991 span.style.width = makeEm(width);
5992 return span;
5993};
5994
5995/* harmony default export */ var buildCommon = ({
5996 fontMap: fontMap,
5997 makeSymbol: makeSymbol,
5998 mathsym: mathsym,
5999 makeSpan: makeSpan,
6000 makeSvgSpan: makeSvgSpan,
6001 makeLineSpan: makeLineSpan,
6002 makeAnchor: makeAnchor,
6003 makeFragment: makeFragment,
6004 wrapFragment: wrapFragment,
6005 makeVList: makeVList,
6006 makeOrd: makeOrd,
6007 makeGlue: makeGlue,
6008 staticSvg: staticSvg,
6009 svgData: svgData,
6010 tryCombineChars: tryCombineChars
6011});
6012;// CONCATENATED MODULE: ./src/spacingData.js
6013/**
6014 * Describes spaces between different classes of atoms.
6015 */
6016var thinspace = {
6017 number: 3,
6018 unit: "mu"
6019};
6020var mediumspace = {
6021 number: 4,
6022 unit: "mu"
6023};
6024var thickspace = {
6025 number: 5,
6026 unit: "mu"
6027}; // Making the type below exact with all optional fields doesn't work due to
6028// - https://github.com/facebook/flow/issues/4582
6029// - https://github.com/facebook/flow/issues/5688
6030// However, since *all* fields are optional, $Shape<> works as suggested in 5688
6031// above.
6032
6033// Spacing relationships for display and text styles
6034var spacings = {
6035 mord: {
6036 mop: thinspace,
6037 mbin: mediumspace,
6038 mrel: thickspace,
6039 minner: thinspace
6040 },
6041 mop: {
6042 mord: thinspace,
6043 mop: thinspace,
6044 mrel: thickspace,
6045 minner: thinspace
6046 },
6047 mbin: {
6048 mord: mediumspace,
6049 mop: mediumspace,
6050 mopen: mediumspace,
6051 minner: mediumspace
6052 },
6053 mrel: {
6054 mord: thickspace,
6055 mop: thickspace,
6056 mopen: thickspace,
6057 minner: thickspace
6058 },
6059 mopen: {},
6060 mclose: {
6061 mop: thinspace,
6062 mbin: mediumspace,
6063 mrel: thickspace,
6064 minner: thinspace
6065 },
6066 mpunct: {
6067 mord: thinspace,
6068 mop: thinspace,
6069 mrel: thickspace,
6070 mopen: thinspace,
6071 mclose: thinspace,
6072 mpunct: thinspace,
6073 minner: thinspace
6074 },
6075 minner: {
6076 mord: thinspace,
6077 mop: thinspace,
6078 mbin: mediumspace,
6079 mrel: thickspace,
6080 mopen: thinspace,
6081 mpunct: thinspace,
6082 minner: thinspace
6083 }
6084}; // Spacing relationships for script and scriptscript styles
6085
6086var tightSpacings = {
6087 mord: {
6088 mop: thinspace
6089 },
6090 mop: {
6091 mord: thinspace,
6092 mop: thinspace
6093 },
6094 mbin: {},
6095 mrel: {},
6096 mopen: {},
6097 mclose: {
6098 mop: thinspace
6099 },
6100 mpunct: {},
6101 minner: {
6102 mop: thinspace
6103 }
6104};
6105;// CONCATENATED MODULE: ./src/defineFunction.js
6106/** Context provided to function handlers for error messages. */
6107// Note: reverse the order of the return type union will cause a flow error.
6108// See https://github.com/facebook/flow/issues/3663.
6109// More general version of `HtmlBuilder` for nodes (e.g. \sum, accent types)
6110// whose presence impacts super/subscripting. In this case, ParseNode<"supsub">
6111// delegates its HTML building to the HtmlBuilder corresponding to these nodes.
6112
6113/**
6114 * Final function spec for use at parse time.
6115 * This is almost identical to `FunctionPropSpec`, except it
6116 * 1. includes the function handler, and
6117 * 2. requires all arguments except argTypes.
6118 * It is generated by `defineFunction()` below.
6119 */
6120
6121/**
6122 * All registered functions.
6123 * `functions.js` just exports this same dictionary again and makes it public.
6124 * `Parser.js` requires this dictionary.
6125 */
6126var _functions = {};
6127/**
6128 * All HTML builders. Should be only used in the `define*` and the `build*ML`
6129 * functions.
6130 */
6131
6132var _htmlGroupBuilders = {};
6133/**
6134 * All MathML builders. Should be only used in the `define*` and the `build*ML`
6135 * functions.
6136 */
6137
6138var _mathmlGroupBuilders = {};
6139function defineFunction(_ref) {
6140 var type = _ref.type,
6141 names = _ref.names,
6142 props = _ref.props,
6143 handler = _ref.handler,
6144 htmlBuilder = _ref.htmlBuilder,
6145 mathmlBuilder = _ref.mathmlBuilder;
6146 // Set default values of functions
6147 var data = {
6148 type: type,
6149 numArgs: props.numArgs,
6150 argTypes: props.argTypes,
6151 allowedInArgument: !!props.allowedInArgument,
6152 allowedInText: !!props.allowedInText,
6153 allowedInMath: props.allowedInMath === undefined ? true : props.allowedInMath,
6154 numOptionalArgs: props.numOptionalArgs || 0,
6155 infix: !!props.infix,
6156 primitive: !!props.primitive,
6157 handler: handler
6158 };
6159
6160 for (var i = 0; i < names.length; ++i) {
6161 _functions[names[i]] = data;
6162 }
6163
6164 if (type) {
6165 if (htmlBuilder) {
6166 _htmlGroupBuilders[type] = htmlBuilder;
6167 }
6168
6169 if (mathmlBuilder) {
6170 _mathmlGroupBuilders[type] = mathmlBuilder;
6171 }
6172 }
6173}
6174/**
6175 * Use this to register only the HTML and MathML builders for a function (e.g.
6176 * if the function's ParseNode is generated in Parser.js rather than via a
6177 * stand-alone handler provided to `defineFunction`).
6178 */
6179
6180function defineFunctionBuilders(_ref2) {
6181 var type = _ref2.type,
6182 htmlBuilder = _ref2.htmlBuilder,
6183 mathmlBuilder = _ref2.mathmlBuilder;
6184 defineFunction({
6185 type: type,
6186 names: [],
6187 props: {
6188 numArgs: 0
6189 },
6190 handler: function handler() {
6191 throw new Error('Should never be called.');
6192 },
6193 htmlBuilder: htmlBuilder,
6194 mathmlBuilder: mathmlBuilder
6195 });
6196}
6197var normalizeArgument = function normalizeArgument(arg) {
6198 return arg.type === "ordgroup" && arg.body.length === 1 ? arg.body[0] : arg;
6199}; // Since the corresponding buildHTML/buildMathML function expects a
6200// list of elements, we normalize for different kinds of arguments
6201
6202var ordargument = function ordargument(arg) {
6203 return arg.type === "ordgroup" ? arg.body : [arg];
6204};
6205;// CONCATENATED MODULE: ./src/buildHTML.js
6206/**
6207 * This file does the main work of building a domTree structure from a parse
6208 * tree. The entry point is the `buildHTML` function, which takes a parse tree.
6209 * Then, the buildExpression, buildGroup, and various groupBuilders functions
6210 * are called, to produce a final HTML tree.
6211 */
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221var buildHTML_makeSpan = buildCommon.makeSpan; // Binary atoms (first class `mbin`) change into ordinary atoms (`mord`)
6222// depending on their surroundings. See TeXbook pg. 442-446, Rules 5 and 6,
6223// and the text before Rule 19.
6224
6225var binLeftCanceller = ["leftmost", "mbin", "mopen", "mrel", "mop", "mpunct"];
6226var binRightCanceller = ["rightmost", "mrel", "mclose", "mpunct"];
6227var styleMap = {
6228 "display": src_Style.DISPLAY,
6229 "text": src_Style.TEXT,
6230 "script": src_Style.SCRIPT,
6231 "scriptscript": src_Style.SCRIPTSCRIPT
6232};
6233var DomEnum = {
6234 mord: "mord",
6235 mop: "mop",
6236 mbin: "mbin",
6237 mrel: "mrel",
6238 mopen: "mopen",
6239 mclose: "mclose",
6240 mpunct: "mpunct",
6241 minner: "minner"
6242};
6243
6244/**
6245 * Take a list of nodes, build them in order, and return a list of the built
6246 * nodes. documentFragments are flattened into their contents, so the
6247 * returned list contains no fragments. `isRealGroup` is true if `expression`
6248 * is a real group (no atoms will be added on either side), as opposed to
6249 * a partial group (e.g. one created by \color). `surrounding` is an array
6250 * consisting type of nodes that will be added to the left and right.
6251 */
6252var buildExpression = function buildExpression(expression, options, isRealGroup, surrounding) {
6253 if (surrounding === void 0) {
6254 surrounding = [null, null];
6255 }
6256
6257 // Parse expressions into `groups`.
6258 var groups = [];
6259
6260 for (var i = 0; i < expression.length; i++) {
6261 var output = buildGroup(expression[i], options);
6262
6263 if (output instanceof DocumentFragment) {
6264 var children = output.children;
6265 groups.push.apply(groups, children);
6266 } else {
6267 groups.push(output);
6268 }
6269 } // Combine consecutive domTree.symbolNodes into a single symbolNode.
6270
6271
6272 buildCommon.tryCombineChars(groups); // If `expression` is a partial group, let the parent handle spacings
6273 // to avoid processing groups multiple times.
6274
6275 if (!isRealGroup) {
6276 return groups;
6277 }
6278
6279 var glueOptions = options;
6280
6281 if (expression.length === 1) {
6282 var node = expression[0];
6283
6284 if (node.type === "sizing") {
6285 glueOptions = options.havingSize(node.size);
6286 } else if (node.type === "styling") {
6287 glueOptions = options.havingStyle(styleMap[node.style]);
6288 }
6289 } // Dummy spans for determining spacings between surrounding atoms.
6290 // If `expression` has no atoms on the left or right, class "leftmost"
6291 // or "rightmost", respectively, is used to indicate it.
6292
6293
6294 var dummyPrev = buildHTML_makeSpan([surrounding[0] || "leftmost"], [], options);
6295 var dummyNext = buildHTML_makeSpan([surrounding[1] || "rightmost"], [], options); // TODO: These code assumes that a node's math class is the first element
6296 // of its `classes` array. A later cleanup should ensure this, for
6297 // instance by changing the signature of `makeSpan`.
6298 // Before determining what spaces to insert, perform bin cancellation.
6299 // Binary operators change to ordinary symbols in some contexts.
6300
6301 var isRoot = isRealGroup === "root";
6302 traverseNonSpaceNodes(groups, function (node, prev) {
6303 var prevType = prev.classes[0];
6304 var type = node.classes[0];
6305
6306 if (prevType === "mbin" && utils.contains(binRightCanceller, type)) {
6307 prev.classes[0] = "mord";
6308 } else if (type === "mbin" && utils.contains(binLeftCanceller, prevType)) {
6309 node.classes[0] = "mord";
6310 }
6311 }, {
6312 node: dummyPrev
6313 }, dummyNext, isRoot);
6314 traverseNonSpaceNodes(groups, function (node, prev) {
6315 var prevType = getTypeOfDomTree(prev);
6316 var type = getTypeOfDomTree(node); // 'mtight' indicates that the node is script or scriptscript style.
6317
6318 var space = prevType && type ? node.hasClass("mtight") ? tightSpacings[prevType][type] : spacings[prevType][type] : null;
6319
6320 if (space) {
6321 // Insert glue (spacing) after the `prev`.
6322 return buildCommon.makeGlue(space, glueOptions);
6323 }
6324 }, {
6325 node: dummyPrev
6326 }, dummyNext, isRoot);
6327 return groups;
6328}; // Depth-first traverse non-space `nodes`, calling `callback` with the current and
6329// previous node as arguments, optionally returning a node to insert after the
6330// previous node. `prev` is an object with the previous node and `insertAfter`
6331// function to insert after it. `next` is a node that will be added to the right.
6332// Used for bin cancellation and inserting spacings.
6333
6334var traverseNonSpaceNodes = function traverseNonSpaceNodes(nodes, callback, prev, next, isRoot) {
6335 if (next) {
6336 // temporarily append the right node, if exists
6337 nodes.push(next);
6338 }
6339
6340 var i = 0;
6341
6342 for (; i < nodes.length; i++) {
6343 var node = nodes[i];
6344 var partialGroup = checkPartialGroup(node);
6345
6346 if (partialGroup) {
6347 // Recursive DFS
6348 // $FlowFixMe: make nodes a $ReadOnlyArray by returning a new array
6349 traverseNonSpaceNodes(partialGroup.children, callback, prev, null, isRoot);
6350 continue;
6351 } // Ignore explicit spaces (e.g., \;, \,) when determining what implicit
6352 // spacing should go between atoms of different classes
6353
6354
6355 var nonspace = !node.hasClass("mspace");
6356
6357 if (nonspace) {
6358 var result = callback(node, prev.node);
6359
6360 if (result) {
6361 if (prev.insertAfter) {
6362 prev.insertAfter(result);
6363 } else {
6364 // insert at front
6365 nodes.unshift(result);
6366 i++;
6367 }
6368 }
6369 }
6370
6371 if (nonspace) {
6372 prev.node = node;
6373 } else if (isRoot && node.hasClass("newline")) {
6374 prev.node = buildHTML_makeSpan(["leftmost"]); // treat like beginning of line
6375 }
6376
6377 prev.insertAfter = function (index) {
6378 return function (n) {
6379 nodes.splice(index + 1, 0, n);
6380 i++;
6381 };
6382 }(i);
6383 }
6384
6385 if (next) {
6386 nodes.pop();
6387 }
6388}; // Check if given node is a partial group, i.e., does not affect spacing around.
6389
6390
6391var checkPartialGroup = function checkPartialGroup(node) {
6392 if (node instanceof DocumentFragment || node instanceof Anchor || node instanceof Span && node.hasClass("enclosing")) {
6393 return node;
6394 }
6395
6396 return null;
6397}; // Return the outermost node of a domTree.
6398
6399
6400var getOutermostNode = function getOutermostNode(node, side) {
6401 var partialGroup = checkPartialGroup(node);
6402
6403 if (partialGroup) {
6404 var children = partialGroup.children;
6405
6406 if (children.length) {
6407 if (side === "right") {
6408 return getOutermostNode(children[children.length - 1], "right");
6409 } else if (side === "left") {
6410 return getOutermostNode(children[0], "left");
6411 }
6412 }
6413 }
6414
6415 return node;
6416}; // Return math atom class (mclass) of a domTree.
6417// If `side` is given, it will get the type of the outermost node at given side.
6418
6419
6420var getTypeOfDomTree = function getTypeOfDomTree(node, side) {
6421 if (!node) {
6422 return null;
6423 }
6424
6425 if (side) {
6426 node = getOutermostNode(node, side);
6427 } // This makes a lot of assumptions as to where the type of atom
6428 // appears. We should do a better job of enforcing this.
6429
6430
6431 return DomEnum[node.classes[0]] || null;
6432};
6433var makeNullDelimiter = function makeNullDelimiter(options, classes) {
6434 var moreClasses = ["nulldelimiter"].concat(options.baseSizingClasses());
6435 return buildHTML_makeSpan(classes.concat(moreClasses));
6436};
6437/**
6438 * buildGroup is the function that takes a group and calls the correct groupType
6439 * function for it. It also handles the interaction of size and style changes
6440 * between parents and children.
6441 */
6442
6443var buildGroup = function buildGroup(group, options, baseOptions) {
6444 if (!group) {
6445 return buildHTML_makeSpan();
6446 }
6447
6448 if (_htmlGroupBuilders[group.type]) {
6449 // Call the groupBuilders function
6450 // $FlowFixMe
6451 var groupNode = _htmlGroupBuilders[group.type](group, options); // If the size changed between the parent and the current group, account
6452 // for that size difference.
6453
6454 if (baseOptions && options.size !== baseOptions.size) {
6455 groupNode = buildHTML_makeSpan(options.sizingClasses(baseOptions), [groupNode], options);
6456 var multiplier = options.sizeMultiplier / baseOptions.sizeMultiplier;
6457 groupNode.height *= multiplier;
6458 groupNode.depth *= multiplier;
6459 }
6460
6461 return groupNode;
6462 } else {
6463 throw new src_ParseError("Got group of unknown type: '" + group.type + "'");
6464 }
6465};
6466/**
6467 * Combine an array of HTML DOM nodes (e.g., the output of `buildExpression`)
6468 * into an unbreakable HTML node of class .base, with proper struts to
6469 * guarantee correct vertical extent. `buildHTML` calls this repeatedly to
6470 * make up the entire expression as a sequence of unbreakable units.
6471 */
6472
6473function buildHTMLUnbreakable(children, options) {
6474 // Compute height and depth of this chunk.
6475 var body = buildHTML_makeSpan(["base"], children, options); // Add strut, which ensures that the top of the HTML element falls at
6476 // the height of the expression, and the bottom of the HTML element
6477 // falls at the depth of the expression.
6478
6479 var strut = buildHTML_makeSpan(["strut"]);
6480 strut.style.height = makeEm(body.height + body.depth);
6481
6482 if (body.depth) {
6483 strut.style.verticalAlign = makeEm(-body.depth);
6484 }
6485
6486 body.children.unshift(strut);
6487 return body;
6488}
6489/**
6490 * Take an entire parse tree, and build it into an appropriate set of HTML
6491 * nodes.
6492 */
6493
6494
6495function buildHTML(tree, options) {
6496 // Strip off outer tag wrapper for processing below.
6497 var tag = null;
6498
6499 if (tree.length === 1 && tree[0].type === "tag") {
6500 tag = tree[0].tag;
6501 tree = tree[0].body;
6502 } // Build the expression contained in the tree
6503
6504
6505 var expression = buildExpression(tree, options, "root");
6506 var eqnNum;
6507
6508 if (expression.length === 2 && expression[1].hasClass("tag")) {
6509 // An environment with automatic equation numbers, e.g. {gather}.
6510 eqnNum = expression.pop();
6511 }
6512
6513 var children = []; // Create one base node for each chunk between potential line breaks.
6514 // The TeXBook [p.173] says "A formula will be broken only after a
6515 // relation symbol like $=$ or $<$ or $\rightarrow$, or after a binary
6516 // operation symbol like $+$ or $-$ or $\times$, where the relation or
6517 // binary operation is on the ``outer level'' of the formula (i.e., not
6518 // enclosed in {...} and not part of an \over construction)."
6519
6520 var parts = [];
6521
6522 for (var i = 0; i < expression.length; i++) {
6523 parts.push(expression[i]);
6524
6525 if (expression[i].hasClass("mbin") || expression[i].hasClass("mrel") || expression[i].hasClass("allowbreak")) {
6526 // Put any post-operator glue on same line as operator.
6527 // Watch for \nobreak along the way, and stop at \newline.
6528 var nobreak = false;
6529
6530 while (i < expression.length - 1 && expression[i + 1].hasClass("mspace") && !expression[i + 1].hasClass("newline")) {
6531 i++;
6532 parts.push(expression[i]);
6533
6534 if (expression[i].hasClass("nobreak")) {
6535 nobreak = true;
6536 }
6537 } // Don't allow break if \nobreak among the post-operator glue.
6538
6539
6540 if (!nobreak) {
6541 children.push(buildHTMLUnbreakable(parts, options));
6542 parts = [];
6543 }
6544 } else if (expression[i].hasClass("newline")) {
6545 // Write the line except the newline
6546 parts.pop();
6547
6548 if (parts.length > 0) {
6549 children.push(buildHTMLUnbreakable(parts, options));
6550 parts = [];
6551 } // Put the newline at the top level
6552
6553
6554 children.push(expression[i]);
6555 }
6556 }
6557
6558 if (parts.length > 0) {
6559 children.push(buildHTMLUnbreakable(parts, options));
6560 } // Now, if there was a tag, build it too and append it as a final child.
6561
6562
6563 var tagChild;
6564
6565 if (tag) {
6566 tagChild = buildHTMLUnbreakable(buildExpression(tag, options, true));
6567 tagChild.classes = ["tag"];
6568 children.push(tagChild);
6569 } else if (eqnNum) {
6570 children.push(eqnNum);
6571 }
6572
6573 var htmlNode = buildHTML_makeSpan(["katex-html"], children);
6574 htmlNode.setAttribute("aria-hidden", "true"); // Adjust the strut of the tag to be the maximum height of all children
6575 // (the height of the enclosing htmlNode) for proper vertical alignment.
6576
6577 if (tagChild) {
6578 var strut = tagChild.children[0];
6579 strut.style.height = makeEm(htmlNode.height + htmlNode.depth);
6580
6581 if (htmlNode.depth) {
6582 strut.style.verticalAlign = makeEm(-htmlNode.depth);
6583 }
6584 }
6585
6586 return htmlNode;
6587}
6588;// CONCATENATED MODULE: ./src/mathMLTree.js
6589/**
6590 * These objects store data about MathML nodes. This is the MathML equivalent
6591 * of the types in domTree.js. Since MathML handles its own rendering, and
6592 * since we're mainly using MathML to improve accessibility, we don't manage
6593 * any of the styling state that the plain DOM nodes do.
6594 *
6595 * The `toNode` and `toMarkup` functions work simlarly to how they do in
6596 * domTree.js, creating namespaced DOM nodes and HTML text markup respectively.
6597 */
6598
6599
6600
6601
6602function newDocumentFragment(children) {
6603 return new DocumentFragment(children);
6604}
6605/**
6606 * This node represents a general purpose MathML node of any type. The
6607 * constructor requires the type of node to create (for example, `"mo"` or
6608 * `"mspace"`, corresponding to `<mo>` and `<mspace>` tags).
6609 */
6610
6611var MathNode = /*#__PURE__*/function () {
6612 function MathNode(type, children, classes) {
6613 this.type = void 0;
6614 this.attributes = void 0;
6615 this.children = void 0;
6616 this.classes = void 0;
6617 this.type = type;
6618 this.attributes = {};
6619 this.children = children || [];
6620 this.classes = classes || [];
6621 }
6622 /**
6623 * Sets an attribute on a MathML node. MathML depends on attributes to convey a
6624 * semantic content, so this is used heavily.
6625 */
6626
6627
6628 var _proto = MathNode.prototype;
6629
6630 _proto.setAttribute = function setAttribute(name, value) {
6631 this.attributes[name] = value;
6632 }
6633 /**
6634 * Gets an attribute on a MathML node.
6635 */
6636 ;
6637
6638 _proto.getAttribute = function getAttribute(name) {
6639 return this.attributes[name];
6640 }
6641 /**
6642 * Converts the math node into a MathML-namespaced DOM element.
6643 */
6644 ;
6645
6646 _proto.toNode = function toNode() {
6647 var node = document.createElementNS("http://www.w3.org/1998/Math/MathML", this.type);
6648
6649 for (var attr in this.attributes) {
6650 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
6651 node.setAttribute(attr, this.attributes[attr]);
6652 }
6653 }
6654
6655 if (this.classes.length > 0) {
6656 node.className = createClass(this.classes);
6657 }
6658
6659 for (var i = 0; i < this.children.length; i++) {
6660 node.appendChild(this.children[i].toNode());
6661 }
6662
6663 return node;
6664 }
6665 /**
6666 * Converts the math node into an HTML markup string.
6667 */
6668 ;
6669
6670 _proto.toMarkup = function toMarkup() {
6671 var markup = "<" + this.type; // Add the attributes
6672
6673 for (var attr in this.attributes) {
6674 if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
6675 markup += " " + attr + "=\"";
6676 markup += utils.escape(this.attributes[attr]);
6677 markup += "\"";
6678 }
6679 }
6680
6681 if (this.classes.length > 0) {
6682 markup += " class =\"" + utils.escape(createClass(this.classes)) + "\"";
6683 }
6684
6685 markup += ">";
6686
6687 for (var i = 0; i < this.children.length; i++) {
6688 markup += this.children[i].toMarkup();
6689 }
6690
6691 markup += "</" + this.type + ">";
6692 return markup;
6693 }
6694 /**
6695 * Converts the math node into a string, similar to innerText, but escaped.
6696 */
6697 ;
6698
6699 _proto.toText = function toText() {
6700 return this.children.map(function (child) {
6701 return child.toText();
6702 }).join("");
6703 };
6704
6705 return MathNode;
6706}();
6707/**
6708 * This node represents a piece of text.
6709 */
6710
6711var TextNode = /*#__PURE__*/function () {
6712 function TextNode(text) {
6713 this.text = void 0;
6714 this.text = text;
6715 }
6716 /**
6717 * Converts the text node into a DOM text node.
6718 */
6719
6720
6721 var _proto2 = TextNode.prototype;
6722
6723 _proto2.toNode = function toNode() {
6724 return document.createTextNode(this.text);
6725 }
6726 /**
6727 * Converts the text node into escaped HTML markup
6728 * (representing the text itself).
6729 */
6730 ;
6731
6732 _proto2.toMarkup = function toMarkup() {
6733 return utils.escape(this.toText());
6734 }
6735 /**
6736 * Converts the text node into a string
6737 * (representing the text iteself).
6738 */
6739 ;
6740
6741 _proto2.toText = function toText() {
6742 return this.text;
6743 };
6744
6745 return TextNode;
6746}();
6747/**
6748 * This node represents a space, but may render as <mspace.../> or as text,
6749 * depending on the width.
6750 */
6751
6752var SpaceNode = /*#__PURE__*/function () {
6753 /**
6754 * Create a Space node with width given in CSS ems.
6755 */
6756 function SpaceNode(width) {
6757 this.width = void 0;
6758 this.character = void 0;
6759 this.width = width; // See https://www.w3.org/TR/2000/WD-MathML2-20000328/chapter6.html
6760 // for a table of space-like characters. We use Unicode
6761 // representations instead of &LongNames; as it's not clear how to
6762 // make the latter via document.createTextNode.
6763
6764 if (width >= 0.05555 && width <= 0.05556) {
6765 this.character = "\u200A"; //  
6766 } else if (width >= 0.1666 && width <= 0.1667) {
6767 this.character = "\u2009"; //  
6768 } else if (width >= 0.2222 && width <= 0.2223) {
6769 this.character = "\u2005"; //  
6770 } else if (width >= 0.2777 && width <= 0.2778) {
6771 this.character = "\u2005\u200A"; //   
6772 } else if (width >= -0.05556 && width <= -0.05555) {
6773 this.character = "\u200A\u2063"; // ​
6774 } else if (width >= -0.1667 && width <= -0.1666) {
6775 this.character = "\u2009\u2063"; // ​
6776 } else if (width >= -0.2223 && width <= -0.2222) {
6777 this.character = "\u205F\u2063"; // ​
6778 } else if (width >= -0.2778 && width <= -0.2777) {
6779 this.character = "\u2005\u2063"; // ​
6780 } else {
6781 this.character = null;
6782 }
6783 }
6784 /**
6785 * Converts the math node into a MathML-namespaced DOM element.
6786 */
6787
6788
6789 var _proto3 = SpaceNode.prototype;
6790
6791 _proto3.toNode = function toNode() {
6792 if (this.character) {
6793 return document.createTextNode(this.character);
6794 } else {
6795 var node = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mspace");
6796 node.setAttribute("width", makeEm(this.width));
6797 return node;
6798 }
6799 }
6800 /**
6801 * Converts the math node into an HTML markup string.
6802 */
6803 ;
6804
6805 _proto3.toMarkup = function toMarkup() {
6806 if (this.character) {
6807 return "<mtext>" + this.character + "</mtext>";
6808 } else {
6809 return "<mspace width=\"" + makeEm(this.width) + "\"/>";
6810 }
6811 }
6812 /**
6813 * Converts the math node into a string, similar to innerText.
6814 */
6815 ;
6816
6817 _proto3.toText = function toText() {
6818 if (this.character) {
6819 return this.character;
6820 } else {
6821 return " ";
6822 }
6823 };
6824
6825 return SpaceNode;
6826}();
6827
6828/* harmony default export */ var mathMLTree = ({
6829 MathNode: MathNode,
6830 TextNode: TextNode,
6831 SpaceNode: SpaceNode,
6832 newDocumentFragment: newDocumentFragment
6833});
6834;// CONCATENATED MODULE: ./src/buildMathML.js
6835/**
6836 * This file converts a parse tree into a cooresponding MathML tree. The main
6837 * entry point is the `buildMathML` function, which takes a parse tree from the
6838 * parser.
6839 */
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849/**
6850 * Takes a symbol and converts it into a MathML text node after performing
6851 * optional replacement from symbols.js.
6852 */
6853var makeText = function makeText(text, mode, options) {
6854 if (src_symbols[mode][text] && src_symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.substr(4, 2) === "tt" || options.font && options.font.substr(4, 2) === "tt"))) {
6855 text = src_symbols[mode][text].replace;
6856 }
6857
6858 return new mathMLTree.TextNode(text);
6859};
6860/**
6861 * Wrap the given array of nodes in an <mrow> node if needed, i.e.,
6862 * unless the array has length 1. Always returns a single node.
6863 */
6864
6865var makeRow = function makeRow(body) {
6866 if (body.length === 1) {
6867 return body[0];
6868 } else {
6869 return new mathMLTree.MathNode("mrow", body);
6870 }
6871};
6872/**
6873 * Returns the math variant as a string or null if none is required.
6874 */
6875
6876var getVariant = function getVariant(group, options) {
6877 // Handle \text... font specifiers as best we can.
6878 // MathML has a limited list of allowable mathvariant specifiers; see
6879 // https://www.w3.org/TR/MathML3/chapter3.html#presm.commatt
6880 if (options.fontFamily === "texttt") {
6881 return "monospace";
6882 } else if (options.fontFamily === "textsf") {
6883 if (options.fontShape === "textit" && options.fontWeight === "textbf") {
6884 return "sans-serif-bold-italic";
6885 } else if (options.fontShape === "textit") {
6886 return "sans-serif-italic";
6887 } else if (options.fontWeight === "textbf") {
6888 return "bold-sans-serif";
6889 } else {
6890 return "sans-serif";
6891 }
6892 } else if (options.fontShape === "textit" && options.fontWeight === "textbf") {
6893 return "bold-italic";
6894 } else if (options.fontShape === "textit") {
6895 return "italic";
6896 } else if (options.fontWeight === "textbf") {
6897 return "bold";
6898 }
6899
6900 var font = options.font;
6901
6902 if (!font || font === "mathnormal") {
6903 return null;
6904 }
6905
6906 var mode = group.mode;
6907
6908 if (font === "mathit") {
6909 return "italic";
6910 } else if (font === "boldsymbol") {
6911 return group.type === "textord" ? "bold" : "bold-italic";
6912 } else if (font === "mathbf") {
6913 return "bold";
6914 } else if (font === "mathbb") {
6915 return "double-struck";
6916 } else if (font === "mathfrak") {
6917 return "fraktur";
6918 } else if (font === "mathscr" || font === "mathcal") {
6919 // MathML makes no distinction between script and caligrahpic
6920 return "script";
6921 } else if (font === "mathsf") {
6922 return "sans-serif";
6923 } else if (font === "mathtt") {
6924 return "monospace";
6925 }
6926
6927 var text = group.text;
6928
6929 if (utils.contains(["\\imath", "\\jmath"], text)) {
6930 return null;
6931 }
6932
6933 if (src_symbols[mode][text] && src_symbols[mode][text].replace) {
6934 text = src_symbols[mode][text].replace;
6935 }
6936
6937 var fontName = buildCommon.fontMap[font].fontName;
6938
6939 if (getCharacterMetrics(text, fontName, mode)) {
6940 return buildCommon.fontMap[font].variant;
6941 }
6942
6943 return null;
6944};
6945/**
6946 * Takes a list of nodes, builds them, and returns a list of the generated
6947 * MathML nodes. Also combine consecutive <mtext> outputs into a single
6948 * <mtext> tag.
6949 */
6950
6951var buildMathML_buildExpression = function buildExpression(expression, options, isOrdgroup) {
6952 if (expression.length === 1) {
6953 var group = buildMathML_buildGroup(expression[0], options);
6954
6955 if (isOrdgroup && group instanceof MathNode && group.type === "mo") {
6956 // When TeX writers want to suppress spacing on an operator,
6957 // they often put the operator by itself inside braces.
6958 group.setAttribute("lspace", "0em");
6959 group.setAttribute("rspace", "0em");
6960 }
6961
6962 return [group];
6963 }
6964
6965 var groups = [];
6966 var lastGroup;
6967
6968 for (var i = 0; i < expression.length; i++) {
6969 var _group = buildMathML_buildGroup(expression[i], options);
6970
6971 if (_group instanceof MathNode && lastGroup instanceof MathNode) {
6972 // Concatenate adjacent <mtext>s
6973 if (_group.type === 'mtext' && lastGroup.type === 'mtext' && _group.getAttribute('mathvariant') === lastGroup.getAttribute('mathvariant')) {
6974 var _lastGroup$children;
6975
6976 (_lastGroup$children = lastGroup.children).push.apply(_lastGroup$children, _group.children);
6977
6978 continue; // Concatenate adjacent <mn>s
6979 } else if (_group.type === 'mn' && lastGroup.type === 'mn') {
6980 var _lastGroup$children2;
6981
6982 (_lastGroup$children2 = lastGroup.children).push.apply(_lastGroup$children2, _group.children);
6983
6984 continue; // Concatenate <mn>...</mn> followed by <mi>.</mi>
6985 } else if (_group.type === 'mi' && _group.children.length === 1 && lastGroup.type === 'mn') {
6986 var child = _group.children[0];
6987
6988 if (child instanceof TextNode && child.text === '.') {
6989 var _lastGroup$children3;
6990
6991 (_lastGroup$children3 = lastGroup.children).push.apply(_lastGroup$children3, _group.children);
6992
6993 continue;
6994 }
6995 } else if (lastGroup.type === 'mi' && lastGroup.children.length === 1) {
6996 var lastChild = lastGroup.children[0];
6997
6998 if (lastChild instanceof TextNode && lastChild.text === "\u0338" && (_group.type === 'mo' || _group.type === 'mi' || _group.type === 'mn')) {
6999 var _child = _group.children[0];
7000
7001 if (_child instanceof TextNode && _child.text.length > 0) {
7002 // Overlay with combining character long solidus
7003 _child.text = _child.text.slice(0, 1) + "\u0338" + _child.text.slice(1);
7004 groups.pop();
7005 }
7006 }
7007 }
7008 }
7009
7010 groups.push(_group);
7011 lastGroup = _group;
7012 }
7013
7014 return groups;
7015};
7016/**
7017 * Equivalent to buildExpression, but wraps the elements in an <mrow>
7018 * if there's more than one. Returns a single node instead of an array.
7019 */
7020
7021var buildExpressionRow = function buildExpressionRow(expression, options, isOrdgroup) {
7022 return makeRow(buildMathML_buildExpression(expression, options, isOrdgroup));
7023};
7024/**
7025 * Takes a group from the parser and calls the appropriate groupBuilders function
7026 * on it to produce a MathML node.
7027 */
7028
7029var buildMathML_buildGroup = function buildGroup(group, options) {
7030 if (!group) {
7031 return new mathMLTree.MathNode("mrow");
7032 }
7033
7034 if (_mathmlGroupBuilders[group.type]) {
7035 // Call the groupBuilders function
7036 // $FlowFixMe
7037 var result = _mathmlGroupBuilders[group.type](group, options); // $FlowFixMe
7038
7039 return result;
7040 } else {
7041 throw new src_ParseError("Got group of unknown type: '" + group.type + "'");
7042 }
7043};
7044/**
7045 * Takes a full parse tree and settings and builds a MathML representation of
7046 * it. In particular, we put the elements from building the parse tree into a
7047 * <semantics> tag so we can also include that TeX source as an annotation.
7048 *
7049 * Note that we actually return a domTree element with a `<math>` inside it so
7050 * we can do appropriate styling.
7051 */
7052
7053function buildMathML(tree, texExpression, options, isDisplayMode, forMathmlOnly) {
7054 var expression = buildMathML_buildExpression(tree, options); // TODO: Make a pass thru the MathML similar to buildHTML.traverseNonSpaceNodes
7055 // and add spacing nodes. This is necessary only adjacent to math operators
7056 // like \sin or \lim or to subsup elements that contain math operators.
7057 // MathML takes care of the other spacing issues.
7058 // Wrap up the expression in an mrow so it is presented in the semantics
7059 // tag correctly, unless it's a single <mrow> or <mtable>.
7060
7061 var wrapper;
7062
7063 if (expression.length === 1 && expression[0] instanceof MathNode && utils.contains(["mrow", "mtable"], expression[0].type)) {
7064 wrapper = expression[0];
7065 } else {
7066 wrapper = new mathMLTree.MathNode("mrow", expression);
7067 } // Build a TeX annotation of the source
7068
7069
7070 var annotation = new mathMLTree.MathNode("annotation", [new mathMLTree.TextNode(texExpression)]);
7071 annotation.setAttribute("encoding", "application/x-tex");
7072 var semantics = new mathMLTree.MathNode("semantics", [wrapper, annotation]);
7073 var math = new mathMLTree.MathNode("math", [semantics]);
7074 math.setAttribute("xmlns", "http://www.w3.org/1998/Math/MathML");
7075
7076 if (isDisplayMode) {
7077 math.setAttribute("display", "block");
7078 } // You can't style <math> nodes, so we wrap the node in a span.
7079 // NOTE: The span class is not typed to have <math> nodes as children, and
7080 // we don't want to make the children type more generic since the children
7081 // of span are expected to have more fields in `buildHtml` contexts.
7082
7083
7084 var wrapperClass = forMathmlOnly ? "katex" : "katex-mathml"; // $FlowFixMe
7085
7086 return buildCommon.makeSpan([wrapperClass], [math]);
7087}
7088;// CONCATENATED MODULE: ./src/buildTree.js
7089
7090
7091
7092
7093
7094
7095
7096var optionsFromSettings = function optionsFromSettings(settings) {
7097 return new src_Options({
7098 style: settings.displayMode ? src_Style.DISPLAY : src_Style.TEXT,
7099 maxSize: settings.maxSize,
7100 minRuleThickness: settings.minRuleThickness
7101 });
7102};
7103
7104var displayWrap = function displayWrap(node, settings) {
7105 if (settings.displayMode) {
7106 var classes = ["katex-display"];
7107
7108 if (settings.leqno) {
7109 classes.push("leqno");
7110 }
7111
7112 if (settings.fleqn) {
7113 classes.push("fleqn");
7114 }
7115
7116 node = buildCommon.makeSpan(classes, [node]);
7117 }
7118
7119 return node;
7120};
7121
7122var buildTree = function buildTree(tree, expression, settings) {
7123 var options = optionsFromSettings(settings);
7124 var katexNode;
7125
7126 if (settings.output === "mathml") {
7127 return buildMathML(tree, expression, options, settings.displayMode, true);
7128 } else if (settings.output === "html") {
7129 var htmlNode = buildHTML(tree, options);
7130 katexNode = buildCommon.makeSpan(["katex"], [htmlNode]);
7131 } else {
7132 var mathMLNode = buildMathML(tree, expression, options, settings.displayMode, false);
7133
7134 var _htmlNode = buildHTML(tree, options);
7135
7136 katexNode = buildCommon.makeSpan(["katex"], [mathMLNode, _htmlNode]);
7137 }
7138
7139 return displayWrap(katexNode, settings);
7140};
7141var buildHTMLTree = function buildHTMLTree(tree, expression, settings) {
7142 var options = optionsFromSettings(settings);
7143 var htmlNode = buildHTML(tree, options);
7144 var katexNode = buildCommon.makeSpan(["katex"], [htmlNode]);
7145 return displayWrap(katexNode, settings);
7146};
7147/* harmony default export */ var src_buildTree = ((/* unused pure expression or super */ null && (buildTree)));
7148;// CONCATENATED MODULE: ./src/stretchy.js
7149/**
7150 * This file provides support to buildMathML.js and buildHTML.js
7151 * for stretchy wide elements rendered from SVG files
7152 * and other CSS trickery.
7153 */
7154
7155
7156
7157
7158
7159var stretchyCodePoint = {
7160 widehat: "^",
7161 widecheck: "ˇ",
7162 widetilde: "~",
7163 utilde: "~",
7164 overleftarrow: "\u2190",
7165 underleftarrow: "\u2190",
7166 xleftarrow: "\u2190",
7167 overrightarrow: "\u2192",
7168 underrightarrow: "\u2192",
7169 xrightarrow: "\u2192",
7170 underbrace: "\u23DF",
7171 overbrace: "\u23DE",
7172 overgroup: "\u23E0",
7173 undergroup: "\u23E1",
7174 overleftrightarrow: "\u2194",
7175 underleftrightarrow: "\u2194",
7176 xleftrightarrow: "\u2194",
7177 Overrightarrow: "\u21D2",
7178 xRightarrow: "\u21D2",
7179 overleftharpoon: "\u21BC",
7180 xleftharpoonup: "\u21BC",
7181 overrightharpoon: "\u21C0",
7182 xrightharpoonup: "\u21C0",
7183 xLeftarrow: "\u21D0",
7184 xLeftrightarrow: "\u21D4",
7185 xhookleftarrow: "\u21A9",
7186 xhookrightarrow: "\u21AA",
7187 xmapsto: "\u21A6",
7188 xrightharpoondown: "\u21C1",
7189 xleftharpoondown: "\u21BD",
7190 xrightleftharpoons: "\u21CC",
7191 xleftrightharpoons: "\u21CB",
7192 xtwoheadleftarrow: "\u219E",
7193 xtwoheadrightarrow: "\u21A0",
7194 xlongequal: "=",
7195 xtofrom: "\u21C4",
7196 xrightleftarrows: "\u21C4",
7197 xrightequilibrium: "\u21CC",
7198 // Not a perfect match.
7199 xleftequilibrium: "\u21CB",
7200 // None better available.
7201 "\\cdrightarrow": "\u2192",
7202 "\\cdleftarrow": "\u2190",
7203 "\\cdlongequal": "="
7204};
7205
7206var mathMLnode = function mathMLnode(label) {
7207 var node = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(stretchyCodePoint[label.replace(/^\\/, '')])]);
7208 node.setAttribute("stretchy", "true");
7209 return node;
7210}; // Many of the KaTeX SVG images have been adapted from glyphs in KaTeX fonts.
7211// Copyright (c) 2009-2010, Design Science, Inc. (<www.mathjax.org>)
7212// Copyright (c) 2014-2017 Khan Academy (<www.khanacademy.org>)
7213// Licensed under the SIL Open Font License, Version 1.1.
7214// See \nhttp://scripts.sil.org/OFL
7215// Very Long SVGs
7216// Many of the KaTeX stretchy wide elements use a long SVG image and an
7217// overflow: hidden tactic to achieve a stretchy image while avoiding
7218// distortion of arrowheads or brace corners.
7219// The SVG typically contains a very long (400 em) arrow.
7220// The SVG is in a container span that has overflow: hidden, so the span
7221// acts like a window that exposes only part of the SVG.
7222// The SVG always has a longer, thinner aspect ratio than the container span.
7223// After the SVG fills 100% of the height of the container span,
7224// there is a long arrow shaft left over. That left-over shaft is not shown.
7225// Instead, it is sliced off because the span's CSS has overflow: hidden.
7226// Thus, the reader sees an arrow that matches the subject matter width
7227// without distortion.
7228// Some functions, such as \cancel, need to vary their aspect ratio. These
7229// functions do not get the overflow SVG treatment.
7230// Second Brush Stroke
7231// Low resolution monitors struggle to display images in fine detail.
7232// So browsers apply anti-aliasing. A long straight arrow shaft therefore
7233// will sometimes appear as if it has a blurred edge.
7234// To mitigate this, these SVG files contain a second "brush-stroke" on the
7235// arrow shafts. That is, a second long thin rectangular SVG path has been
7236// written directly on top of each arrow shaft. This reinforcement causes
7237// some of the screen pixels to display as black instead of the anti-aliased
7238// gray pixel that a single path would generate. So we get arrow shafts
7239// whose edges appear to be sharper.
7240// In the katexImagesData object just below, the dimensions all
7241// correspond to path geometry inside the relevant SVG.
7242// For example, \overrightarrow uses the same arrowhead as glyph U+2192
7243// from the KaTeX Main font. The scaling factor is 1000.
7244// That is, inside the font, that arrowhead is 522 units tall, which
7245// corresponds to 0.522 em inside the document.
7246
7247
7248var katexImagesData = {
7249 // path(s), minWidth, height, align
7250 overrightarrow: [["rightarrow"], 0.888, 522, "xMaxYMin"],
7251 overleftarrow: [["leftarrow"], 0.888, 522, "xMinYMin"],
7252 underrightarrow: [["rightarrow"], 0.888, 522, "xMaxYMin"],
7253 underleftarrow: [["leftarrow"], 0.888, 522, "xMinYMin"],
7254 xrightarrow: [["rightarrow"], 1.469, 522, "xMaxYMin"],
7255 "\\cdrightarrow": [["rightarrow"], 3.0, 522, "xMaxYMin"],
7256 // CD minwwidth2.5pc
7257 xleftarrow: [["leftarrow"], 1.469, 522, "xMinYMin"],
7258 "\\cdleftarrow": [["leftarrow"], 3.0, 522, "xMinYMin"],
7259 Overrightarrow: [["doublerightarrow"], 0.888, 560, "xMaxYMin"],
7260 xRightarrow: [["doublerightarrow"], 1.526, 560, "xMaxYMin"],
7261 xLeftarrow: [["doubleleftarrow"], 1.526, 560, "xMinYMin"],
7262 overleftharpoon: [["leftharpoon"], 0.888, 522, "xMinYMin"],
7263 xleftharpoonup: [["leftharpoon"], 0.888, 522, "xMinYMin"],
7264 xleftharpoondown: [["leftharpoondown"], 0.888, 522, "xMinYMin"],
7265 overrightharpoon: [["rightharpoon"], 0.888, 522, "xMaxYMin"],
7266 xrightharpoonup: [["rightharpoon"], 0.888, 522, "xMaxYMin"],
7267 xrightharpoondown: [["rightharpoondown"], 0.888, 522, "xMaxYMin"],
7268 xlongequal: [["longequal"], 0.888, 334, "xMinYMin"],
7269 "\\cdlongequal": [["longequal"], 3.0, 334, "xMinYMin"],
7270 xtwoheadleftarrow: [["twoheadleftarrow"], 0.888, 334, "xMinYMin"],
7271 xtwoheadrightarrow: [["twoheadrightarrow"], 0.888, 334, "xMaxYMin"],
7272 overleftrightarrow: [["leftarrow", "rightarrow"], 0.888, 522],
7273 overbrace: [["leftbrace", "midbrace", "rightbrace"], 1.6, 548],
7274 underbrace: [["leftbraceunder", "midbraceunder", "rightbraceunder"], 1.6, 548],
7275 underleftrightarrow: [["leftarrow", "rightarrow"], 0.888, 522],
7276 xleftrightarrow: [["leftarrow", "rightarrow"], 1.75, 522],
7277 xLeftrightarrow: [["doubleleftarrow", "doublerightarrow"], 1.75, 560],
7278 xrightleftharpoons: [["leftharpoondownplus", "rightharpoonplus"], 1.75, 716],
7279 xleftrightharpoons: [["leftharpoonplus", "rightharpoondownplus"], 1.75, 716],
7280 xhookleftarrow: [["leftarrow", "righthook"], 1.08, 522],
7281 xhookrightarrow: [["lefthook", "rightarrow"], 1.08, 522],
7282 overlinesegment: [["leftlinesegment", "rightlinesegment"], 0.888, 522],
7283 underlinesegment: [["leftlinesegment", "rightlinesegment"], 0.888, 522],
7284 overgroup: [["leftgroup", "rightgroup"], 0.888, 342],
7285 undergroup: [["leftgroupunder", "rightgroupunder"], 0.888, 342],
7286 xmapsto: [["leftmapsto", "rightarrow"], 1.5, 522],
7287 xtofrom: [["leftToFrom", "rightToFrom"], 1.75, 528],
7288 // The next three arrows are from the mhchem package.
7289 // In mhchem.sty, min-length is 2.0em. But these arrows might appear in the
7290 // document as \xrightarrow or \xrightleftharpoons. Those have
7291 // min-length = 1.75em, so we set min-length on these next three to match.
7292 xrightleftarrows: [["baraboveleftarrow", "rightarrowabovebar"], 1.75, 901],
7293 xrightequilibrium: [["baraboveshortleftharpoon", "rightharpoonaboveshortbar"], 1.75, 716],
7294 xleftequilibrium: [["shortbaraboveleftharpoon", "shortrightharpoonabovebar"], 1.75, 716]
7295};
7296
7297var groupLength = function groupLength(arg) {
7298 if (arg.type === "ordgroup") {
7299 return arg.body.length;
7300 } else {
7301 return 1;
7302 }
7303};
7304
7305var svgSpan = function svgSpan(group, options) {
7306 // Create a span with inline SVG for the element.
7307 function buildSvgSpan_() {
7308 var viewBoxWidth = 400000; // default
7309
7310 var label = group.label.substr(1);
7311
7312 if (utils.contains(["widehat", "widecheck", "widetilde", "utilde"], label)) {
7313 // Each type in the `if` statement corresponds to one of the ParseNode
7314 // types below. This narrowing is required to access `grp.base`.
7315 // $FlowFixMe
7316 var grp = group; // There are four SVG images available for each function.
7317 // Choose a taller image when there are more characters.
7318
7319 var numChars = groupLength(grp.base);
7320 var viewBoxHeight;
7321 var pathName;
7322
7323 var _height;
7324
7325 if (numChars > 5) {
7326 if (label === "widehat" || label === "widecheck") {
7327 viewBoxHeight = 420;
7328 viewBoxWidth = 2364;
7329 _height = 0.42;
7330 pathName = label + "4";
7331 } else {
7332 viewBoxHeight = 312;
7333 viewBoxWidth = 2340;
7334 _height = 0.34;
7335 pathName = "tilde4";
7336 }
7337 } else {
7338 var imgIndex = [1, 1, 2, 2, 3, 3][numChars];
7339
7340 if (label === "widehat" || label === "widecheck") {
7341 viewBoxWidth = [0, 1062, 2364, 2364, 2364][imgIndex];
7342 viewBoxHeight = [0, 239, 300, 360, 420][imgIndex];
7343 _height = [0, 0.24, 0.3, 0.3, 0.36, 0.42][imgIndex];
7344 pathName = label + imgIndex;
7345 } else {
7346 viewBoxWidth = [0, 600, 1033, 2339, 2340][imgIndex];
7347 viewBoxHeight = [0, 260, 286, 306, 312][imgIndex];
7348 _height = [0, 0.26, 0.286, 0.3, 0.306, 0.34][imgIndex];
7349 pathName = "tilde" + imgIndex;
7350 }
7351 }
7352
7353 var path = new PathNode(pathName);
7354 var svgNode = new SvgNode([path], {
7355 "width": "100%",
7356 "height": makeEm(_height),
7357 "viewBox": "0 0 " + viewBoxWidth + " " + viewBoxHeight,
7358 "preserveAspectRatio": "none"
7359 });
7360 return {
7361 span: buildCommon.makeSvgSpan([], [svgNode], options),
7362 minWidth: 0,
7363 height: _height
7364 };
7365 } else {
7366 var spans = [];
7367 var data = katexImagesData[label];
7368 var paths = data[0],
7369 _minWidth = data[1],
7370 _viewBoxHeight = data[2];
7371
7372 var _height2 = _viewBoxHeight / 1000;
7373
7374 var numSvgChildren = paths.length;
7375 var widthClasses;
7376 var aligns;
7377
7378 if (numSvgChildren === 1) {
7379 // $FlowFixMe: All these cases must be of the 4-tuple type.
7380 var align1 = data[3];
7381 widthClasses = ["hide-tail"];
7382 aligns = [align1];
7383 } else if (numSvgChildren === 2) {
7384 widthClasses = ["halfarrow-left", "halfarrow-right"];
7385 aligns = ["xMinYMin", "xMaxYMin"];
7386 } else if (numSvgChildren === 3) {
7387 widthClasses = ["brace-left", "brace-center", "brace-right"];
7388 aligns = ["xMinYMin", "xMidYMin", "xMaxYMin"];
7389 } else {
7390 throw new Error("Correct katexImagesData or update code here to support\n " + numSvgChildren + " children.");
7391 }
7392
7393 for (var i = 0; i < numSvgChildren; i++) {
7394 var _path = new PathNode(paths[i]);
7395
7396 var _svgNode = new SvgNode([_path], {
7397 "width": "400em",
7398 "height": makeEm(_height2),
7399 "viewBox": "0 0 " + viewBoxWidth + " " + _viewBoxHeight,
7400 "preserveAspectRatio": aligns[i] + " slice"
7401 });
7402
7403 var _span = buildCommon.makeSvgSpan([widthClasses[i]], [_svgNode], options);
7404
7405 if (numSvgChildren === 1) {
7406 return {
7407 span: _span,
7408 minWidth: _minWidth,
7409 height: _height2
7410 };
7411 } else {
7412 _span.style.height = makeEm(_height2);
7413 spans.push(_span);
7414 }
7415 }
7416
7417 return {
7418 span: buildCommon.makeSpan(["stretchy"], spans, options),
7419 minWidth: _minWidth,
7420 height: _height2
7421 };
7422 }
7423 } // buildSvgSpan_()
7424
7425
7426 var _buildSvgSpan_ = buildSvgSpan_(),
7427 span = _buildSvgSpan_.span,
7428 minWidth = _buildSvgSpan_.minWidth,
7429 height = _buildSvgSpan_.height; // Note that we are returning span.depth = 0.
7430 // Any adjustments relative to the baseline must be done in buildHTML.
7431
7432
7433 span.height = height;
7434 span.style.height = makeEm(height);
7435
7436 if (minWidth > 0) {
7437 span.style.minWidth = makeEm(minWidth);
7438 }
7439
7440 return span;
7441};
7442
7443var encloseSpan = function encloseSpan(inner, label, topPad, bottomPad, options) {
7444 // Return an image span for \cancel, \bcancel, \xcancel, \fbox, or \angl
7445 var img;
7446 var totalHeight = inner.height + inner.depth + topPad + bottomPad;
7447
7448 if (/fbox|color|angl/.test(label)) {
7449 img = buildCommon.makeSpan(["stretchy", label], [], options);
7450
7451 if (label === "fbox") {
7452 var color = options.color && options.getColor();
7453
7454 if (color) {
7455 img.style.borderColor = color;
7456 }
7457 }
7458 } else {
7459 // \cancel, \bcancel, or \xcancel
7460 // Since \cancel's SVG is inline and it omits the viewBox attribute,
7461 // its stroke-width will not vary with span area.
7462 var lines = [];
7463
7464 if (/^[bx]cancel$/.test(label)) {
7465 lines.push(new LineNode({
7466 "x1": "0",
7467 "y1": "0",
7468 "x2": "100%",
7469 "y2": "100%",
7470 "stroke-width": "0.046em"
7471 }));
7472 }
7473
7474 if (/^x?cancel$/.test(label)) {
7475 lines.push(new LineNode({
7476 "x1": "0",
7477 "y1": "100%",
7478 "x2": "100%",
7479 "y2": "0",
7480 "stroke-width": "0.046em"
7481 }));
7482 }
7483
7484 var svgNode = new SvgNode(lines, {
7485 "width": "100%",
7486 "height": makeEm(totalHeight)
7487 });
7488 img = buildCommon.makeSvgSpan([], [svgNode], options);
7489 }
7490
7491 img.height = totalHeight;
7492 img.style.height = makeEm(totalHeight);
7493 return img;
7494};
7495
7496/* harmony default export */ var stretchy = ({
7497 encloseSpan: encloseSpan,
7498 mathMLnode: mathMLnode,
7499 svgSpan: svgSpan
7500});
7501;// CONCATENATED MODULE: ./src/parseNode.js
7502
7503
7504/**
7505 * Asserts that the node is of the given type and returns it with stricter
7506 * typing. Throws if the node's type does not match.
7507 */
7508function assertNodeType(node, type) {
7509 if (!node || node.type !== type) {
7510 throw new Error("Expected node of type " + type + ", but got " + (node ? "node of type " + node.type : String(node)));
7511 } // $FlowFixMe, >=0.125
7512
7513
7514 return node;
7515}
7516/**
7517 * Returns the node more strictly typed iff it is of the given type. Otherwise,
7518 * returns null.
7519 */
7520
7521function assertSymbolNodeType(node) {
7522 var typedNode = checkSymbolNodeType(node);
7523
7524 if (!typedNode) {
7525 throw new Error("Expected node of symbol group type, but got " + (node ? "node of type " + node.type : String(node)));
7526 }
7527
7528 return typedNode;
7529}
7530/**
7531 * Returns the node more strictly typed iff it is of the given type. Otherwise,
7532 * returns null.
7533 */
7534
7535function checkSymbolNodeType(node) {
7536 if (node && (node.type === "atom" || NON_ATOMS.hasOwnProperty(node.type))) {
7537 // $FlowFixMe
7538 return node;
7539 }
7540
7541 return null;
7542}
7543;// CONCATENATED MODULE: ./src/functions/accent.js
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554// NOTE: Unlike most `htmlBuilder`s, this one handles not only "accent", but
7555// also "supsub" since an accent can affect super/subscripting.
7556var htmlBuilder = function htmlBuilder(grp, options) {
7557 // Accents are handled in the TeXbook pg. 443, rule 12.
7558 var base;
7559 var group;
7560 var supSubGroup;
7561
7562 if (grp && grp.type === "supsub") {
7563 // If our base is a character box, and we have superscripts and
7564 // subscripts, the supsub will defer to us. In particular, we want
7565 // to attach the superscripts and subscripts to the inner body (so
7566 // that the position of the superscripts and subscripts won't be
7567 // affected by the height of the accent). We accomplish this by
7568 // sticking the base of the accent into the base of the supsub, and
7569 // rendering that, while keeping track of where the accent is.
7570 // The real accent group is the base of the supsub group
7571 group = assertNodeType(grp.base, "accent"); // The character box is the base of the accent group
7572
7573 base = group.base; // Stick the character box into the base of the supsub group
7574
7575 grp.base = base; // Rerender the supsub group with its new base, and store that
7576 // result.
7577
7578 supSubGroup = assertSpan(buildGroup(grp, options)); // reset original base
7579
7580 grp.base = group;
7581 } else {
7582 group = assertNodeType(grp, "accent");
7583 base = group.base;
7584 } // Build the base group
7585
7586
7587 var body = buildGroup(base, options.havingCrampedStyle()); // Does the accent need to shift for the skew of a character?
7588
7589 var mustShift = group.isShifty && utils.isCharacterBox(base); // Calculate the skew of the accent. This is based on the line "If the
7590 // nucleus is not a single character, let s = 0; otherwise set s to the
7591 // kern amount for the nucleus followed by the \skewchar of its font."
7592 // Note that our skew metrics are just the kern between each character
7593 // and the skewchar.
7594
7595 var skew = 0;
7596
7597 if (mustShift) {
7598 // If the base is a character box, then we want the skew of the
7599 // innermost character. To do that, we find the innermost character:
7600 var baseChar = utils.getBaseElem(base); // Then, we render its group to get the symbol inside it
7601
7602 var baseGroup = buildGroup(baseChar, options.havingCrampedStyle()); // Finally, we pull the skew off of the symbol.
7603
7604 skew = assertSymbolDomNode(baseGroup).skew; // Note that we now throw away baseGroup, because the layers we
7605 // removed with getBaseElem might contain things like \color which
7606 // we can't get rid of.
7607 // TODO(emily): Find a better way to get the skew
7608 }
7609
7610 var accentBelow = group.label === "\\c"; // calculate the amount of space between the body and the accent
7611
7612 var clearance = accentBelow ? body.height + body.depth : Math.min(body.height, options.fontMetrics().xHeight); // Build the accent
7613
7614 var accentBody;
7615
7616 if (!group.isStretchy) {
7617 var accent;
7618 var width;
7619
7620 if (group.label === "\\vec") {
7621 // Before version 0.9, \vec used the combining font glyph U+20D7.
7622 // But browsers, especially Safari, are not consistent in how they
7623 // render combining characters when not preceded by a character.
7624 // So now we use an SVG.
7625 // If Safari reforms, we should consider reverting to the glyph.
7626 accent = buildCommon.staticSvg("vec", options);
7627 width = buildCommon.svgData.vec[1];
7628 } else {
7629 accent = buildCommon.makeOrd({
7630 mode: group.mode,
7631 text: group.label
7632 }, options, "textord");
7633 accent = assertSymbolDomNode(accent); // Remove the italic correction of the accent, because it only serves to
7634 // shift the accent over to a place we don't want.
7635
7636 accent.italic = 0;
7637 width = accent.width;
7638
7639 if (accentBelow) {
7640 clearance += accent.depth;
7641 }
7642 }
7643
7644 accentBody = buildCommon.makeSpan(["accent-body"], [accent]); // "Full" accents expand the width of the resulting symbol to be
7645 // at least the width of the accent, and overlap directly onto the
7646 // character without any vertical offset.
7647
7648 var accentFull = group.label === "\\textcircled";
7649
7650 if (accentFull) {
7651 accentBody.classes.push('accent-full');
7652 clearance = body.height;
7653 } // Shift the accent over by the skew.
7654
7655
7656 var left = skew; // CSS defines `.katex .accent .accent-body:not(.accent-full) { width: 0 }`
7657 // so that the accent doesn't contribute to the bounding box.
7658 // We need to shift the character by its width (effectively half
7659 // its width) to compensate.
7660
7661 if (!accentFull) {
7662 left -= width / 2;
7663 }
7664
7665 accentBody.style.left = makeEm(left); // \textcircled uses the \bigcirc glyph, so it needs some
7666 // vertical adjustment to match LaTeX.
7667
7668 if (group.label === "\\textcircled") {
7669 accentBody.style.top = ".2em";
7670 }
7671
7672 accentBody = buildCommon.makeVList({
7673 positionType: "firstBaseline",
7674 children: [{
7675 type: "elem",
7676 elem: body
7677 }, {
7678 type: "kern",
7679 size: -clearance
7680 }, {
7681 type: "elem",
7682 elem: accentBody
7683 }]
7684 }, options);
7685 } else {
7686 accentBody = stretchy.svgSpan(group, options);
7687 accentBody = buildCommon.makeVList({
7688 positionType: "firstBaseline",
7689 children: [{
7690 type: "elem",
7691 elem: body
7692 }, {
7693 type: "elem",
7694 elem: accentBody,
7695 wrapperClasses: ["svg-align"],
7696 wrapperStyle: skew > 0 ? {
7697 width: "calc(100% - " + makeEm(2 * skew) + ")",
7698 marginLeft: makeEm(2 * skew)
7699 } : undefined
7700 }]
7701 }, options);
7702 }
7703
7704 var accentWrap = buildCommon.makeSpan(["mord", "accent"], [accentBody], options);
7705
7706 if (supSubGroup) {
7707 // Here, we replace the "base" child of the supsub with our newly
7708 // generated accent.
7709 supSubGroup.children[0] = accentWrap; // Since we don't rerun the height calculation after replacing the
7710 // accent, we manually recalculate height.
7711
7712 supSubGroup.height = Math.max(accentWrap.height, supSubGroup.height); // Accents should always be ords, even when their innards are not.
7713
7714 supSubGroup.classes[0] = "mord";
7715 return supSubGroup;
7716 } else {
7717 return accentWrap;
7718 }
7719};
7720
7721var mathmlBuilder = function mathmlBuilder(group, options) {
7722 var accentNode = group.isStretchy ? stretchy.mathMLnode(group.label) : new mathMLTree.MathNode("mo", [makeText(group.label, group.mode)]);
7723 var node = new mathMLTree.MathNode("mover", [buildMathML_buildGroup(group.base, options), accentNode]);
7724 node.setAttribute("accent", "true");
7725 return node;
7726};
7727
7728var NON_STRETCHY_ACCENT_REGEX = new RegExp(["\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", "\\check", "\\hat", "\\vec", "\\dot", "\\mathring"].map(function (accent) {
7729 return "\\" + accent;
7730}).join("|")); // Accents
7731
7732defineFunction({
7733 type: "accent",
7734 names: ["\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", "\\check", "\\hat", "\\vec", "\\dot", "\\mathring", "\\widecheck", "\\widehat", "\\widetilde", "\\overrightarrow", "\\overleftarrow", "\\Overrightarrow", "\\overleftrightarrow", "\\overgroup", "\\overlinesegment", "\\overleftharpoon", "\\overrightharpoon"],
7735 props: {
7736 numArgs: 1
7737 },
7738 handler: function handler(context, args) {
7739 var base = normalizeArgument(args[0]);
7740 var isStretchy = !NON_STRETCHY_ACCENT_REGEX.test(context.funcName);
7741 var isShifty = !isStretchy || context.funcName === "\\widehat" || context.funcName === "\\widetilde" || context.funcName === "\\widecheck";
7742 return {
7743 type: "accent",
7744 mode: context.parser.mode,
7745 label: context.funcName,
7746 isStretchy: isStretchy,
7747 isShifty: isShifty,
7748 base: base
7749 };
7750 },
7751 htmlBuilder: htmlBuilder,
7752 mathmlBuilder: mathmlBuilder
7753}); // Text-mode accents
7754
7755defineFunction({
7756 type: "accent",
7757 names: ["\\'", "\\`", "\\^", "\\~", "\\=", "\\u", "\\.", '\\"', "\\c", "\\r", "\\H", "\\v", "\\textcircled"],
7758 props: {
7759 numArgs: 1,
7760 allowedInText: true,
7761 allowedInMath: true,
7762 // unless in strict mode
7763 argTypes: ["primitive"]
7764 },
7765 handler: function handler(context, args) {
7766 var base = args[0];
7767 var mode = context.parser.mode;
7768
7769 if (mode === "math") {
7770 context.parser.settings.reportNonstrict("mathVsTextAccents", "LaTeX's accent " + context.funcName + " works only in text mode");
7771 mode = "text";
7772 }
7773
7774 return {
7775 type: "accent",
7776 mode: mode,
7777 label: context.funcName,
7778 isStretchy: false,
7779 isShifty: true,
7780 base: base
7781 };
7782 },
7783 htmlBuilder: htmlBuilder,
7784 mathmlBuilder: mathmlBuilder
7785});
7786;// CONCATENATED MODULE: ./src/functions/accentunder.js
7787// Horizontal overlap functions
7788
7789
7790
7791
7792
7793
7794defineFunction({
7795 type: "accentUnder",
7796 names: ["\\underleftarrow", "\\underrightarrow", "\\underleftrightarrow", "\\undergroup", "\\underlinesegment", "\\utilde"],
7797 props: {
7798 numArgs: 1
7799 },
7800 handler: function handler(_ref, args) {
7801 var parser = _ref.parser,
7802 funcName = _ref.funcName;
7803 var base = args[0];
7804 return {
7805 type: "accentUnder",
7806 mode: parser.mode,
7807 label: funcName,
7808 base: base
7809 };
7810 },
7811 htmlBuilder: function htmlBuilder(group, options) {
7812 // Treat under accents much like underlines.
7813 var innerGroup = buildGroup(group.base, options);
7814 var accentBody = stretchy.svgSpan(group, options);
7815 var kern = group.label === "\\utilde" ? 0.12 : 0; // Generate the vlist, with the appropriate kerns
7816
7817 var vlist = buildCommon.makeVList({
7818 positionType: "top",
7819 positionData: innerGroup.height,
7820 children: [{
7821 type: "elem",
7822 elem: accentBody,
7823 wrapperClasses: ["svg-align"]
7824 }, {
7825 type: "kern",
7826 size: kern
7827 }, {
7828 type: "elem",
7829 elem: innerGroup
7830 }]
7831 }, options);
7832 return buildCommon.makeSpan(["mord", "accentunder"], [vlist], options);
7833 },
7834 mathmlBuilder: function mathmlBuilder(group, options) {
7835 var accentNode = stretchy.mathMLnode(group.label);
7836 var node = new mathMLTree.MathNode("munder", [buildMathML_buildGroup(group.base, options), accentNode]);
7837 node.setAttribute("accentunder", "true");
7838 return node;
7839 }
7840});
7841;// CONCATENATED MODULE: ./src/functions/arrow.js
7842
7843
7844
7845
7846
7847
7848
7849// Helper function
7850var paddedNode = function paddedNode(group) {
7851 var node = new mathMLTree.MathNode("mpadded", group ? [group] : []);
7852 node.setAttribute("width", "+0.6em");
7853 node.setAttribute("lspace", "0.3em");
7854 return node;
7855}; // Stretchy arrows with an optional argument
7856
7857
7858defineFunction({
7859 type: "xArrow",
7860 names: ["\\xleftarrow", "\\xrightarrow", "\\xLeftarrow", "\\xRightarrow", "\\xleftrightarrow", "\\xLeftrightarrow", "\\xhookleftarrow", "\\xhookrightarrow", "\\xmapsto", "\\xrightharpoondown", "\\xrightharpoonup", "\\xleftharpoondown", "\\xleftharpoonup", "\\xrightleftharpoons", "\\xleftrightharpoons", "\\xlongequal", "\\xtwoheadrightarrow", "\\xtwoheadleftarrow", "\\xtofrom", // The next 3 functions are here to support the mhchem extension.
7861 // Direct use of these functions is discouraged and may break someday.
7862 "\\xrightleftarrows", "\\xrightequilibrium", "\\xleftequilibrium", // The next 3 functions are here only to support the {CD} environment.
7863 "\\\\cdrightarrow", "\\\\cdleftarrow", "\\\\cdlongequal"],
7864 props: {
7865 numArgs: 1,
7866 numOptionalArgs: 1
7867 },
7868 handler: function handler(_ref, args, optArgs) {
7869 var parser = _ref.parser,
7870 funcName = _ref.funcName;
7871 return {
7872 type: "xArrow",
7873 mode: parser.mode,
7874 label: funcName,
7875 body: args[0],
7876 below: optArgs[0]
7877 };
7878 },
7879 // Flow is unable to correctly infer the type of `group`, even though it's
7880 // unamibiguously determined from the passed-in `type` above.
7881 htmlBuilder: function htmlBuilder(group, options) {
7882 var style = options.style; // Build the argument groups in the appropriate style.
7883 // Ref: amsmath.dtx: \hbox{$\scriptstyle\mkern#3mu{#6}\mkern#4mu$}%
7884 // Some groups can return document fragments. Handle those by wrapping
7885 // them in a span.
7886
7887 var newOptions = options.havingStyle(style.sup());
7888 var upperGroup = buildCommon.wrapFragment(buildGroup(group.body, newOptions, options), options);
7889 var arrowPrefix = group.label.slice(0, 2) === "\\x" ? "x" : "cd";
7890 upperGroup.classes.push(arrowPrefix + "-arrow-pad");
7891 var lowerGroup;
7892
7893 if (group.below) {
7894 // Build the lower group
7895 newOptions = options.havingStyle(style.sub());
7896 lowerGroup = buildCommon.wrapFragment(buildGroup(group.below, newOptions, options), options);
7897 lowerGroup.classes.push(arrowPrefix + "-arrow-pad");
7898 }
7899
7900 var arrowBody = stretchy.svgSpan(group, options); // Re shift: Note that stretchy.svgSpan returned arrowBody.depth = 0.
7901 // The point we want on the math axis is at 0.5 * arrowBody.height.
7902
7903 var arrowShift = -options.fontMetrics().axisHeight + 0.5 * arrowBody.height; // 2 mu kern. Ref: amsmath.dtx: #7\if0#2\else\mkern#2mu\fi
7904
7905 var upperShift = -options.fontMetrics().axisHeight - 0.5 * arrowBody.height - 0.111; // 0.111 em = 2 mu
7906
7907 if (upperGroup.depth > 0.25 || group.label === "\\xleftequilibrium") {
7908 upperShift -= upperGroup.depth; // shift up if depth encroaches
7909 } // Generate the vlist
7910
7911
7912 var vlist;
7913
7914 if (lowerGroup) {
7915 var lowerShift = -options.fontMetrics().axisHeight + lowerGroup.height + 0.5 * arrowBody.height + 0.111;
7916 vlist = buildCommon.makeVList({
7917 positionType: "individualShift",
7918 children: [{
7919 type: "elem",
7920 elem: upperGroup,
7921 shift: upperShift
7922 }, {
7923 type: "elem",
7924 elem: arrowBody,
7925 shift: arrowShift
7926 }, {
7927 type: "elem",
7928 elem: lowerGroup,
7929 shift: lowerShift
7930 }]
7931 }, options);
7932 } else {
7933 vlist = buildCommon.makeVList({
7934 positionType: "individualShift",
7935 children: [{
7936 type: "elem",
7937 elem: upperGroup,
7938 shift: upperShift
7939 }, {
7940 type: "elem",
7941 elem: arrowBody,
7942 shift: arrowShift
7943 }]
7944 }, options);
7945 } // $FlowFixMe: Replace this with passing "svg-align" into makeVList.
7946
7947
7948 vlist.children[0].children[0].children[1].classes.push("svg-align");
7949 return buildCommon.makeSpan(["mrel", "x-arrow"], [vlist], options);
7950 },
7951 mathmlBuilder: function mathmlBuilder(group, options) {
7952 var arrowNode = stretchy.mathMLnode(group.label);
7953 arrowNode.setAttribute("minsize", group.label.charAt(0) === "x" ? "1.75em" : "3.0em");
7954 var node;
7955
7956 if (group.body) {
7957 var upperNode = paddedNode(buildMathML_buildGroup(group.body, options));
7958
7959 if (group.below) {
7960 var lowerNode = paddedNode(buildMathML_buildGroup(group.below, options));
7961 node = new mathMLTree.MathNode("munderover", [arrowNode, lowerNode, upperNode]);
7962 } else {
7963 node = new mathMLTree.MathNode("mover", [arrowNode, upperNode]);
7964 }
7965 } else if (group.below) {
7966 var _lowerNode = paddedNode(buildMathML_buildGroup(group.below, options));
7967
7968 node = new mathMLTree.MathNode("munder", [arrowNode, _lowerNode]);
7969 } else {
7970 // This should never happen.
7971 // Parser.js throws an error if there is no argument.
7972 node = paddedNode();
7973 node = new mathMLTree.MathNode("mover", [arrowNode, node]);
7974 }
7975
7976 return node;
7977 }
7978});
7979;// CONCATENATED MODULE: ./src/environments/cd.js
7980
7981
7982
7983
7984
7985
7986
7987
7988var cdArrowFunctionName = {
7989 ">": "\\\\cdrightarrow",
7990 "<": "\\\\cdleftarrow",
7991 "=": "\\\\cdlongequal",
7992 "A": "\\uparrow",
7993 "V": "\\downarrow",
7994 "|": "\\Vert",
7995 ".": "no arrow"
7996};
7997
7998var newCell = function newCell() {
7999 // Create an empty cell, to be filled below with parse nodes.
8000 // The parseTree from this module must be constructed like the
8001 // one created by parseArray(), so an empty CD cell must
8002 // be a ParseNode<"styling">. And CD is always displaystyle.
8003 // So these values are fixed and flow can do implicit typing.
8004 return {
8005 type: "styling",
8006 body: [],
8007 mode: "math",
8008 style: "display"
8009 };
8010};
8011
8012var isStartOfArrow = function isStartOfArrow(node) {
8013 return node.type === "textord" && node.text === "@";
8014};
8015
8016var isLabelEnd = function isLabelEnd(node, endChar) {
8017 return (node.type === "mathord" || node.type === "atom") && node.text === endChar;
8018};
8019
8020function cdArrow(arrowChar, labels, parser) {
8021 // Return a parse tree of an arrow and its labels.
8022 // This acts in a way similar to a macro expansion.
8023 var funcName = cdArrowFunctionName[arrowChar];
8024
8025 switch (funcName) {
8026 case "\\\\cdrightarrow":
8027 case "\\\\cdleftarrow":
8028 return parser.callFunction(funcName, [labels[0]], [labels[1]]);
8029
8030 case "\\uparrow":
8031 case "\\downarrow":
8032 {
8033 var leftLabel = parser.callFunction("\\\\cdleft", [labels[0]], []);
8034 var bareArrow = {
8035 type: "atom",
8036 text: funcName,
8037 mode: "math",
8038 family: "rel"
8039 };
8040 var sizedArrow = parser.callFunction("\\Big", [bareArrow], []);
8041 var rightLabel = parser.callFunction("\\\\cdright", [labels[1]], []);
8042 var arrowGroup = {
8043 type: "ordgroup",
8044 mode: "math",
8045 body: [leftLabel, sizedArrow, rightLabel]
8046 };
8047 return parser.callFunction("\\\\cdparent", [arrowGroup], []);
8048 }
8049
8050 case "\\\\cdlongequal":
8051 return parser.callFunction("\\\\cdlongequal", [], []);
8052
8053 case "\\Vert":
8054 {
8055 var arrow = {
8056 type: "textord",
8057 text: "\\Vert",
8058 mode: "math"
8059 };
8060 return parser.callFunction("\\Big", [arrow], []);
8061 }
8062
8063 default:
8064 return {
8065 type: "textord",
8066 text: " ",
8067 mode: "math"
8068 };
8069 }
8070}
8071
8072function parseCD(parser) {
8073 // Get the array's parse nodes with \\ temporarily mapped to \cr.
8074 var parsedRows = [];
8075 parser.gullet.beginGroup();
8076 parser.gullet.macros.set("\\cr", "\\\\\\relax");
8077 parser.gullet.beginGroup();
8078
8079 while (true) {
8080 // eslint-disable-line no-constant-condition
8081 // Get the parse nodes for the next row.
8082 parsedRows.push(parser.parseExpression(false, "\\\\"));
8083 parser.gullet.endGroup();
8084 parser.gullet.beginGroup();
8085 var next = parser.fetch().text;
8086
8087 if (next === "&" || next === "\\\\") {
8088 parser.consume();
8089 } else if (next === "\\end") {
8090 if (parsedRows[parsedRows.length - 1].length === 0) {
8091 parsedRows.pop(); // final row ended in \\
8092 }
8093
8094 break;
8095 } else {
8096 throw new src_ParseError("Expected \\\\ or \\cr or \\end", parser.nextToken);
8097 }
8098 }
8099
8100 var row = [];
8101 var body = [row]; // Loop thru the parse nodes. Collect them into cells and arrows.
8102
8103 for (var i = 0; i < parsedRows.length; i++) {
8104 // Start a new row.
8105 var rowNodes = parsedRows[i]; // Create the first cell.
8106
8107 var cell = newCell();
8108
8109 for (var j = 0; j < rowNodes.length; j++) {
8110 if (!isStartOfArrow(rowNodes[j])) {
8111 // If a parseNode is not an arrow, it goes into a cell.
8112 cell.body.push(rowNodes[j]);
8113 } else {
8114 // Parse node j is an "@", the start of an arrow.
8115 // Before starting on the arrow, push the cell into `row`.
8116 row.push(cell); // Now collect parseNodes into an arrow.
8117 // The character after "@" defines the arrow type.
8118
8119 j += 1;
8120 var arrowChar = assertSymbolNodeType(rowNodes[j]).text; // Create two empty label nodes. We may or may not use them.
8121
8122 var labels = new Array(2);
8123 labels[0] = {
8124 type: "ordgroup",
8125 mode: "math",
8126 body: []
8127 };
8128 labels[1] = {
8129 type: "ordgroup",
8130 mode: "math",
8131 body: []
8132 }; // Process the arrow.
8133
8134 if ("=|.".indexOf(arrowChar) > -1) {// Three "arrows", ``@=`, `@|`, and `@.`, do not take labels.
8135 // Do nothing here.
8136 } else if ("<>AV".indexOf(arrowChar) > -1) {
8137 // Four arrows, `@>>>`, `@<<<`, `@AAA`, and `@VVV`, each take
8138 // two optional labels. E.g. the right-point arrow syntax is
8139 // really: @>{optional label}>{optional label}>
8140 // Collect parseNodes into labels.
8141 for (var labelNum = 0; labelNum < 2; labelNum++) {
8142 var inLabel = true;
8143
8144 for (var k = j + 1; k < rowNodes.length; k++) {
8145 if (isLabelEnd(rowNodes[k], arrowChar)) {
8146 inLabel = false;
8147 j = k;
8148 break;
8149 }
8150
8151 if (isStartOfArrow(rowNodes[k])) {
8152 throw new src_ParseError("Missing a " + arrowChar + " character to complete a CD arrow.", rowNodes[k]);
8153 }
8154
8155 labels[labelNum].body.push(rowNodes[k]);
8156 }
8157
8158 if (inLabel) {
8159 // isLabelEnd never returned a true.
8160 throw new src_ParseError("Missing a " + arrowChar + " character to complete a CD arrow.", rowNodes[j]);
8161 }
8162 }
8163 } else {
8164 throw new src_ParseError("Expected one of \"<>AV=|.\" after @", rowNodes[j]);
8165 } // Now join the arrow to its labels.
8166
8167
8168 var arrow = cdArrow(arrowChar, labels, parser); // Wrap the arrow in ParseNode<"styling">.
8169 // This is done to match parseArray() behavior.
8170
8171 var wrappedArrow = {
8172 type: "styling",
8173 body: [arrow],
8174 mode: "math",
8175 style: "display" // CD is always displaystyle.
8176
8177 };
8178 row.push(wrappedArrow); // In CD's syntax, cells are implicit. That is, everything that
8179 // is not an arrow gets collected into a cell. So create an empty
8180 // cell now. It will collect upcoming parseNodes.
8181
8182 cell = newCell();
8183 }
8184 }
8185
8186 if (i % 2 === 0) {
8187 // Even-numbered rows consist of: cell, arrow, cell, arrow, ... cell
8188 // The last cell is not yet pushed into `row`, so:
8189 row.push(cell);
8190 } else {
8191 // Odd-numbered rows consist of: vert arrow, empty cell, ... vert arrow
8192 // Remove the empty cell that was placed at the beginning of `row`.
8193 row.shift();
8194 }
8195
8196 row = [];
8197 body.push(row);
8198 } // End row group
8199
8200
8201 parser.gullet.endGroup(); // End array group defining \\
8202
8203 parser.gullet.endGroup(); // define column separation.
8204
8205 var cols = new Array(body[0].length).fill({
8206 type: "align",
8207 align: "c",
8208 pregap: 0.25,
8209 // CD package sets \enskip between columns.
8210 postgap: 0.25 // So pre and post each get half an \enskip, i.e. 0.25em.
8211
8212 });
8213 return {
8214 type: "array",
8215 mode: "math",
8216 body: body,
8217 arraystretch: 1,
8218 addJot: true,
8219 rowGaps: [null],
8220 cols: cols,
8221 colSeparationType: "CD",
8222 hLinesBeforeRow: new Array(body.length + 1).fill([])
8223 };
8224} // The functions below are not available for general use.
8225// They are here only for internal use by the {CD} environment in placing labels
8226// next to vertical arrows.
8227// We don't need any such functions for horizontal arrows because we can reuse
8228// the functionality that already exists for extensible arrows.
8229
8230defineFunction({
8231 type: "cdlabel",
8232 names: ["\\\\cdleft", "\\\\cdright"],
8233 props: {
8234 numArgs: 1
8235 },
8236 handler: function handler(_ref, args) {
8237 var parser = _ref.parser,
8238 funcName = _ref.funcName;
8239 return {
8240 type: "cdlabel",
8241 mode: parser.mode,
8242 side: funcName.slice(4),
8243 label: args[0]
8244 };
8245 },
8246 htmlBuilder: function htmlBuilder(group, options) {
8247 var newOptions = options.havingStyle(options.style.sup());
8248 var label = buildCommon.wrapFragment(buildGroup(group.label, newOptions, options), options);
8249 label.classes.push("cd-label-" + group.side);
8250 label.style.bottom = makeEm(0.8 - label.depth); // Zero out label height & depth, so vertical align of arrow is set
8251 // by the arrow height, not by the label.
8252
8253 label.height = 0;
8254 label.depth = 0;
8255 return label;
8256 },
8257 mathmlBuilder: function mathmlBuilder(group, options) {
8258 var label = new mathMLTree.MathNode("mrow", [buildMathML_buildGroup(group.label, options)]);
8259 label = new mathMLTree.MathNode("mpadded", [label]);
8260 label.setAttribute("width", "0");
8261
8262 if (group.side === "left") {
8263 label.setAttribute("lspace", "-1width");
8264 } // We have to guess at vertical alignment. We know the arrow is 1.8em tall,
8265 // But we don't know the height or depth of the label.
8266
8267
8268 label.setAttribute("voffset", "0.7em");
8269 label = new mathMLTree.MathNode("mstyle", [label]);
8270 label.setAttribute("displaystyle", "false");
8271 label.setAttribute("scriptlevel", "1");
8272 return label;
8273 }
8274});
8275defineFunction({
8276 type: "cdlabelparent",
8277 names: ["\\\\cdparent"],
8278 props: {
8279 numArgs: 1
8280 },
8281 handler: function handler(_ref2, args) {
8282 var parser = _ref2.parser;
8283 return {
8284 type: "cdlabelparent",
8285 mode: parser.mode,
8286 fragment: args[0]
8287 };
8288 },
8289 htmlBuilder: function htmlBuilder(group, options) {
8290 // Wrap the vertical arrow and its labels.
8291 // The parent gets position: relative. The child gets position: absolute.
8292 // So CSS can locate the label correctly.
8293 var parent = buildCommon.wrapFragment(buildGroup(group.fragment, options), options);
8294 parent.classes.push("cd-vert-arrow");
8295 return parent;
8296 },
8297 mathmlBuilder: function mathmlBuilder(group, options) {
8298 return new mathMLTree.MathNode("mrow", [buildMathML_buildGroup(group.fragment, options)]);
8299 }
8300});
8301;// CONCATENATED MODULE: ./src/functions/char.js
8302
8303
8304 // \@char is an internal function that takes a grouped decimal argument like
8305// {123} and converts into symbol with code 123. It is used by the *macro*
8306// \char defined in macros.js.
8307
8308defineFunction({
8309 type: "textord",
8310 names: ["\\@char"],
8311 props: {
8312 numArgs: 1,
8313 allowedInText: true
8314 },
8315 handler: function handler(_ref, args) {
8316 var parser = _ref.parser;
8317 var arg = assertNodeType(args[0], "ordgroup");
8318 var group = arg.body;
8319 var number = "";
8320
8321 for (var i = 0; i < group.length; i++) {
8322 var node = assertNodeType(group[i], "textord");
8323 number += node.text;
8324 }
8325
8326 var code = parseInt(number);
8327 var text;
8328
8329 if (isNaN(code)) {
8330 throw new src_ParseError("\\@char has non-numeric argument " + number); // If we drop IE support, the following code could be replaced with
8331 // text = String.fromCodePoint(code)
8332 } else if (code < 0 || code >= 0x10ffff) {
8333 throw new src_ParseError("\\@char with invalid code point " + number);
8334 } else if (code <= 0xffff) {
8335 text = String.fromCharCode(code);
8336 } else {
8337 // Astral code point; split into surrogate halves
8338 code -= 0x10000;
8339 text = String.fromCharCode((code >> 10) + 0xd800, (code & 0x3ff) + 0xdc00);
8340 }
8341
8342 return {
8343 type: "textord",
8344 mode: parser.mode,
8345 text: text
8346 };
8347 }
8348});
8349;// CONCATENATED MODULE: ./src/functions/color.js
8350
8351
8352
8353
8354
8355
8356
8357var color_htmlBuilder = function htmlBuilder(group, options) {
8358 var elements = buildExpression(group.body, options.withColor(group.color), false); // \color isn't supposed to affect the type of the elements it contains.
8359 // To accomplish this, we wrap the results in a fragment, so the inner
8360 // elements will be able to directly interact with their neighbors. For
8361 // example, `\color{red}{2 +} 3` has the same spacing as `2 + 3`
8362
8363 return buildCommon.makeFragment(elements);
8364};
8365
8366var color_mathmlBuilder = function mathmlBuilder(group, options) {
8367 var inner = buildMathML_buildExpression(group.body, options.withColor(group.color));
8368 var node = new mathMLTree.MathNode("mstyle", inner);
8369 node.setAttribute("mathcolor", group.color);
8370 return node;
8371};
8372
8373defineFunction({
8374 type: "color",
8375 names: ["\\textcolor"],
8376 props: {
8377 numArgs: 2,
8378 allowedInText: true,
8379 argTypes: ["color", "original"]
8380 },
8381 handler: function handler(_ref, args) {
8382 var parser = _ref.parser;
8383 var color = assertNodeType(args[0], "color-token").color;
8384 var body = args[1];
8385 return {
8386 type: "color",
8387 mode: parser.mode,
8388 color: color,
8389 body: ordargument(body)
8390 };
8391 },
8392 htmlBuilder: color_htmlBuilder,
8393 mathmlBuilder: color_mathmlBuilder
8394});
8395defineFunction({
8396 type: "color",
8397 names: ["\\color"],
8398 props: {
8399 numArgs: 1,
8400 allowedInText: true,
8401 argTypes: ["color"]
8402 },
8403 handler: function handler(_ref2, args) {
8404 var parser = _ref2.parser,
8405 breakOnTokenText = _ref2.breakOnTokenText;
8406 var color = assertNodeType(args[0], "color-token").color; // Set macro \current@color in current namespace to store the current
8407 // color, mimicking the behavior of color.sty.
8408 // This is currently used just to correctly color a \right
8409 // that follows a \color command.
8410
8411 parser.gullet.macros.set("\\current@color", color); // Parse out the implicit body that should be colored.
8412
8413 var body = parser.parseExpression(true, breakOnTokenText);
8414 return {
8415 type: "color",
8416 mode: parser.mode,
8417 color: color,
8418 body: body
8419 };
8420 },
8421 htmlBuilder: color_htmlBuilder,
8422 mathmlBuilder: color_mathmlBuilder
8423});
8424;// CONCATENATED MODULE: ./src/functions/cr.js
8425// Row breaks within tabular environments, and line breaks at top level
8426
8427
8428
8429
8430 // \DeclareRobustCommand\\{...\@xnewline}
8431
8432defineFunction({
8433 type: "cr",
8434 names: ["\\\\"],
8435 props: {
8436 numArgs: 0,
8437 numOptionalArgs: 1,
8438 argTypes: ["size"],
8439 allowedInText: true
8440 },
8441 handler: function handler(_ref, args, optArgs) {
8442 var parser = _ref.parser;
8443 var size = optArgs[0];
8444 var newLine = !parser.settings.displayMode || !parser.settings.useStrictBehavior("newLineInDisplayMode", "In LaTeX, \\\\ or \\newline " + "does nothing in display mode");
8445 return {
8446 type: "cr",
8447 mode: parser.mode,
8448 newLine: newLine,
8449 size: size && assertNodeType(size, "size").value
8450 };
8451 },
8452 // The following builders are called only at the top level,
8453 // not within tabular/array environments.
8454 htmlBuilder: function htmlBuilder(group, options) {
8455 var span = buildCommon.makeSpan(["mspace"], [], options);
8456
8457 if (group.newLine) {
8458 span.classes.push("newline");
8459
8460 if (group.size) {
8461 span.style.marginTop = makeEm(calculateSize(group.size, options));
8462 }
8463 }
8464
8465 return span;
8466 },
8467 mathmlBuilder: function mathmlBuilder(group, options) {
8468 var node = new mathMLTree.MathNode("mspace");
8469
8470 if (group.newLine) {
8471 node.setAttribute("linebreak", "newline");
8472
8473 if (group.size) {
8474 node.setAttribute("height", makeEm(calculateSize(group.size, options)));
8475 }
8476 }
8477
8478 return node;
8479 }
8480});
8481;// CONCATENATED MODULE: ./src/functions/def.js
8482
8483
8484
8485var globalMap = {
8486 "\\global": "\\global",
8487 "\\long": "\\\\globallong",
8488 "\\\\globallong": "\\\\globallong",
8489 "\\def": "\\gdef",
8490 "\\gdef": "\\gdef",
8491 "\\edef": "\\xdef",
8492 "\\xdef": "\\xdef",
8493 "\\let": "\\\\globallet",
8494 "\\futurelet": "\\\\globalfuture"
8495};
8496
8497var checkControlSequence = function checkControlSequence(tok) {
8498 var name = tok.text;
8499
8500 if (/^(?:[\\{}$&#^_]|EOF)$/.test(name)) {
8501 throw new src_ParseError("Expected a control sequence", tok);
8502 }
8503
8504 return name;
8505};
8506
8507var getRHS = function getRHS(parser) {
8508 var tok = parser.gullet.popToken();
8509
8510 if (tok.text === "=") {
8511 // consume optional equals
8512 tok = parser.gullet.popToken();
8513
8514 if (tok.text === " ") {
8515 // consume one optional space
8516 tok = parser.gullet.popToken();
8517 }
8518 }
8519
8520 return tok;
8521};
8522
8523var letCommand = function letCommand(parser, name, tok, global) {
8524 var macro = parser.gullet.macros.get(tok.text);
8525
8526 if (macro == null) {
8527 // don't expand it later even if a macro with the same name is defined
8528 // e.g., \let\foo=\frac \def\frac{\relax} \frac12
8529 tok.noexpand = true;
8530 macro = {
8531 tokens: [tok],
8532 numArgs: 0,
8533 // reproduce the same behavior in expansion
8534 unexpandable: !parser.gullet.isExpandable(tok.text)
8535 };
8536 }
8537
8538 parser.gullet.macros.set(name, macro, global);
8539}; // <assignment> -> <non-macro assignment>|<macro assignment>
8540// <non-macro assignment> -> <simple assignment>|\global<non-macro assignment>
8541// <macro assignment> -> <definition>|<prefix><macro assignment>
8542// <prefix> -> \global|\long|\outer
8543
8544
8545defineFunction({
8546 type: "internal",
8547 names: ["\\global", "\\long", "\\\\globallong" // can’t be entered directly
8548 ],
8549 props: {
8550 numArgs: 0,
8551 allowedInText: true
8552 },
8553 handler: function handler(_ref) {
8554 var parser = _ref.parser,
8555 funcName = _ref.funcName;
8556 parser.consumeSpaces();
8557 var token = parser.fetch();
8558
8559 if (globalMap[token.text]) {
8560 // KaTeX doesn't have \par, so ignore \long
8561 if (funcName === "\\global" || funcName === "\\\\globallong") {
8562 token.text = globalMap[token.text];
8563 }
8564
8565 return assertNodeType(parser.parseFunction(), "internal");
8566 }
8567
8568 throw new src_ParseError("Invalid token after macro prefix", token);
8569 }
8570}); // Basic support for macro definitions: \def, \gdef, \edef, \xdef
8571// <definition> -> <def><control sequence><definition text>
8572// <def> -> \def|\gdef|\edef|\xdef
8573// <definition text> -> <parameter text><left brace><balanced text><right brace>
8574
8575defineFunction({
8576 type: "internal",
8577 names: ["\\def", "\\gdef", "\\edef", "\\xdef"],
8578 props: {
8579 numArgs: 0,
8580 allowedInText: true,
8581 primitive: true
8582 },
8583 handler: function handler(_ref2) {
8584 var parser = _ref2.parser,
8585 funcName = _ref2.funcName;
8586 var tok = parser.gullet.popToken();
8587 var name = tok.text;
8588
8589 if (/^(?:[\\{}$&#^_]|EOF)$/.test(name)) {
8590 throw new src_ParseError("Expected a control sequence", tok);
8591 }
8592
8593 var numArgs = 0;
8594 var insert;
8595 var delimiters = [[]]; // <parameter text> contains no braces
8596
8597 while (parser.gullet.future().text !== "{") {
8598 tok = parser.gullet.popToken();
8599
8600 if (tok.text === "#") {
8601 // If the very last character of the <parameter text> is #, so that
8602 // this # is immediately followed by {, TeX will behave as if the {
8603 // had been inserted at the right end of both the parameter text
8604 // and the replacement text.
8605 if (parser.gullet.future().text === "{") {
8606 insert = parser.gullet.future();
8607 delimiters[numArgs].push("{");
8608 break;
8609 } // A parameter, the first appearance of # must be followed by 1,
8610 // the next by 2, and so on; up to nine #’s are allowed
8611
8612
8613 tok = parser.gullet.popToken();
8614
8615 if (!/^[1-9]$/.test(tok.text)) {
8616 throw new src_ParseError("Invalid argument number \"" + tok.text + "\"");
8617 }
8618
8619 if (parseInt(tok.text) !== numArgs + 1) {
8620 throw new src_ParseError("Argument number \"" + tok.text + "\" out of order");
8621 }
8622
8623 numArgs++;
8624 delimiters.push([]);
8625 } else if (tok.text === "EOF") {
8626 throw new src_ParseError("Expected a macro definition");
8627 } else {
8628 delimiters[numArgs].push(tok.text);
8629 }
8630 } // replacement text, enclosed in '{' and '}' and properly nested
8631
8632
8633 var _parser$gullet$consum = parser.gullet.consumeArg(),
8634 tokens = _parser$gullet$consum.tokens;
8635
8636 if (insert) {
8637 tokens.unshift(insert);
8638 }
8639
8640 if (funcName === "\\edef" || funcName === "\\xdef") {
8641 tokens = parser.gullet.expandTokens(tokens);
8642 tokens.reverse(); // to fit in with stack order
8643 } // Final arg is the expansion of the macro
8644
8645
8646 parser.gullet.macros.set(name, {
8647 tokens: tokens,
8648 numArgs: numArgs,
8649 delimiters: delimiters
8650 }, funcName === globalMap[funcName]);
8651 return {
8652 type: "internal",
8653 mode: parser.mode
8654 };
8655 }
8656}); // <simple assignment> -> <let assignment>
8657// <let assignment> -> \futurelet<control sequence><token><token>
8658// | \let<control sequence><equals><one optional space><token>
8659// <equals> -> <optional spaces>|<optional spaces>=
8660
8661defineFunction({
8662 type: "internal",
8663 names: ["\\let", "\\\\globallet" // can’t be entered directly
8664 ],
8665 props: {
8666 numArgs: 0,
8667 allowedInText: true,
8668 primitive: true
8669 },
8670 handler: function handler(_ref3) {
8671 var parser = _ref3.parser,
8672 funcName = _ref3.funcName;
8673 var name = checkControlSequence(parser.gullet.popToken());
8674 parser.gullet.consumeSpaces();
8675 var tok = getRHS(parser);
8676 letCommand(parser, name, tok, funcName === "\\\\globallet");
8677 return {
8678 type: "internal",
8679 mode: parser.mode
8680 };
8681 }
8682}); // ref: https://www.tug.org/TUGboat/tb09-3/tb22bechtolsheim.pdf
8683
8684defineFunction({
8685 type: "internal",
8686 names: ["\\futurelet", "\\\\globalfuture" // can’t be entered directly
8687 ],
8688 props: {
8689 numArgs: 0,
8690 allowedInText: true,
8691 primitive: true
8692 },
8693 handler: function handler(_ref4) {
8694 var parser = _ref4.parser,
8695 funcName = _ref4.funcName;
8696 var name = checkControlSequence(parser.gullet.popToken());
8697 var middle = parser.gullet.popToken();
8698 var tok = parser.gullet.popToken();
8699 letCommand(parser, name, tok, funcName === "\\\\globalfuture");
8700 parser.gullet.pushToken(tok);
8701 parser.gullet.pushToken(middle);
8702 return {
8703 type: "internal",
8704 mode: parser.mode
8705 };
8706 }
8707});
8708;// CONCATENATED MODULE: ./src/delimiter.js
8709/**
8710 * This file deals with creating delimiters of various sizes. The TeXbook
8711 * discusses these routines on page 441-442, in the "Another subroutine sets box
8712 * x to a specified variable delimiter" paragraph.
8713 *
8714 * There are three main routines here. `makeSmallDelim` makes a delimiter in the
8715 * normal font, but in either text, script, or scriptscript style.
8716 * `makeLargeDelim` makes a delimiter in textstyle, but in one of the Size1,
8717 * Size2, Size3, or Size4 fonts. `makeStackedDelim` makes a delimiter out of
8718 * smaller pieces that are stacked on top of one another.
8719 *
8720 * The functions take a parameter `center`, which determines if the delimiter
8721 * should be centered around the axis.
8722 *
8723 * Then, there are three exposed functions. `sizedDelim` makes a delimiter in
8724 * one of the given sizes. This is used for things like `\bigl`.
8725 * `customSizedDelim` makes a delimiter with a given total height+depth. It is
8726 * called in places like `\sqrt`. `leftRightDelim` makes an appropriate
8727 * delimiter which surrounds an expression of a given height an depth. It is
8728 * used in `\left` and `\right`.
8729 */
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741/**
8742 * Get the metrics for a given symbol and font, after transformation (i.e.
8743 * after following replacement from symbols.js)
8744 */
8745var getMetrics = function getMetrics(symbol, font, mode) {
8746 var replace = src_symbols.math[symbol] && src_symbols.math[symbol].replace;
8747 var metrics = getCharacterMetrics(replace || symbol, font, mode);
8748
8749 if (!metrics) {
8750 throw new Error("Unsupported symbol " + symbol + " and font size " + font + ".");
8751 }
8752
8753 return metrics;
8754};
8755/**
8756 * Puts a delimiter span in a given style, and adds appropriate height, depth,
8757 * and maxFontSizes.
8758 */
8759
8760
8761var styleWrap = function styleWrap(delim, toStyle, options, classes) {
8762 var newOptions = options.havingBaseStyle(toStyle);
8763 var span = buildCommon.makeSpan(classes.concat(newOptions.sizingClasses(options)), [delim], options);
8764 var delimSizeMultiplier = newOptions.sizeMultiplier / options.sizeMultiplier;
8765 span.height *= delimSizeMultiplier;
8766 span.depth *= delimSizeMultiplier;
8767 span.maxFontSize = newOptions.sizeMultiplier;
8768 return span;
8769};
8770
8771var centerSpan = function centerSpan(span, options, style) {
8772 var newOptions = options.havingBaseStyle(style);
8773 var shift = (1 - options.sizeMultiplier / newOptions.sizeMultiplier) * options.fontMetrics().axisHeight;
8774 span.classes.push("delimcenter");
8775 span.style.top = makeEm(shift);
8776 span.height -= shift;
8777 span.depth += shift;
8778};
8779/**
8780 * Makes a small delimiter. This is a delimiter that comes in the Main-Regular
8781 * font, but is restyled to either be in textstyle, scriptstyle, or
8782 * scriptscriptstyle.
8783 */
8784
8785
8786var makeSmallDelim = function makeSmallDelim(delim, style, center, options, mode, classes) {
8787 var text = buildCommon.makeSymbol(delim, "Main-Regular", mode, options);
8788 var span = styleWrap(text, style, options, classes);
8789
8790 if (center) {
8791 centerSpan(span, options, style);
8792 }
8793
8794 return span;
8795};
8796/**
8797 * Builds a symbol in the given font size (note size is an integer)
8798 */
8799
8800
8801var mathrmSize = function mathrmSize(value, size, mode, options) {
8802 return buildCommon.makeSymbol(value, "Size" + size + "-Regular", mode, options);
8803};
8804/**
8805 * Makes a large delimiter. This is a delimiter that comes in the Size1, Size2,
8806 * Size3, or Size4 fonts. It is always rendered in textstyle.
8807 */
8808
8809
8810var makeLargeDelim = function makeLargeDelim(delim, size, center, options, mode, classes) {
8811 var inner = mathrmSize(delim, size, mode, options);
8812 var span = styleWrap(buildCommon.makeSpan(["delimsizing", "size" + size], [inner], options), src_Style.TEXT, options, classes);
8813
8814 if (center) {
8815 centerSpan(span, options, src_Style.TEXT);
8816 }
8817
8818 return span;
8819};
8820/**
8821 * Make a span from a font glyph with the given offset and in the given font.
8822 * This is used in makeStackedDelim to make the stacking pieces for the delimiter.
8823 */
8824
8825
8826var makeGlyphSpan = function makeGlyphSpan(symbol, font, mode) {
8827 var sizeClass; // Apply the correct CSS class to choose the right font.
8828
8829 if (font === "Size1-Regular") {
8830 sizeClass = "delim-size1";
8831 } else
8832 /* if (font === "Size4-Regular") */
8833 {
8834 sizeClass = "delim-size4";
8835 }
8836
8837 var corner = buildCommon.makeSpan(["delimsizinginner", sizeClass], [buildCommon.makeSpan([], [buildCommon.makeSymbol(symbol, font, mode)])]); // Since this will be passed into `makeVList` in the end, wrap the element
8838 // in the appropriate tag that VList uses.
8839
8840 return {
8841 type: "elem",
8842 elem: corner
8843 };
8844};
8845
8846var makeInner = function makeInner(ch, height, options) {
8847 // Create a span with inline SVG for the inner part of a tall stacked delimiter.
8848 var width = fontMetricsData["Size4-Regular"][ch.charCodeAt(0)] ? fontMetricsData["Size4-Regular"][ch.charCodeAt(0)][4] : fontMetricsData["Size1-Regular"][ch.charCodeAt(0)][4];
8849 var path = new PathNode("inner", innerPath(ch, Math.round(1000 * height)));
8850 var svgNode = new SvgNode([path], {
8851 "width": makeEm(width),
8852 "height": makeEm(height),
8853 // Override CSS rule `.katex svg { width: 100% }`
8854 "style": "width:" + makeEm(width),
8855 "viewBox": "0 0 " + 1000 * width + " " + Math.round(1000 * height),
8856 "preserveAspectRatio": "xMinYMin"
8857 });
8858 var span = buildCommon.makeSvgSpan([], [svgNode], options);
8859 span.height = height;
8860 span.style.height = makeEm(height);
8861 span.style.width = makeEm(width);
8862 return {
8863 type: "elem",
8864 elem: span
8865 };
8866}; // Helpers for makeStackedDelim
8867
8868
8869var lapInEms = 0.008;
8870var lap = {
8871 type: "kern",
8872 size: -1 * lapInEms
8873};
8874var verts = ["|", "\\lvert", "\\rvert", "\\vert"];
8875var doubleVerts = ["\\|", "\\lVert", "\\rVert", "\\Vert"];
8876/**
8877 * Make a stacked delimiter out of a given delimiter, with the total height at
8878 * least `heightTotal`. This routine is mentioned on page 442 of the TeXbook.
8879 */
8880
8881var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, options, mode, classes) {
8882 // There are four parts, the top, an optional middle, a repeated part, and a
8883 // bottom.
8884 var top;
8885 var middle;
8886 var repeat;
8887 var bottom;
8888 top = repeat = bottom = delim;
8889 middle = null; // Also keep track of what font the delimiters are in
8890
8891 var font = "Size1-Regular"; // We set the parts and font based on the symbol. Note that we use
8892 // '\u23d0' instead of '|' and '\u2016' instead of '\\|' for the
8893 // repeats of the arrows
8894
8895 if (delim === "\\uparrow") {
8896 repeat = bottom = "\u23D0";
8897 } else if (delim === "\\Uparrow") {
8898 repeat = bottom = "\u2016";
8899 } else if (delim === "\\downarrow") {
8900 top = repeat = "\u23D0";
8901 } else if (delim === "\\Downarrow") {
8902 top = repeat = "\u2016";
8903 } else if (delim === "\\updownarrow") {
8904 top = "\\uparrow";
8905 repeat = "\u23D0";
8906 bottom = "\\downarrow";
8907 } else if (delim === "\\Updownarrow") {
8908 top = "\\Uparrow";
8909 repeat = "\u2016";
8910 bottom = "\\Downarrow";
8911 } else if (utils.contains(verts, delim)) {
8912 repeat = "\u2223";
8913 } else if (utils.contains(doubleVerts, delim)) {
8914 repeat = "\u2225";
8915 } else if (delim === "[" || delim === "\\lbrack") {
8916 top = "\u23A1";
8917 repeat = "\u23A2";
8918 bottom = "\u23A3";
8919 font = "Size4-Regular";
8920 } else if (delim === "]" || delim === "\\rbrack") {
8921 top = "\u23A4";
8922 repeat = "\u23A5";
8923 bottom = "\u23A6";
8924 font = "Size4-Regular";
8925 } else if (delim === "\\lfloor" || delim === "\u230A") {
8926 repeat = top = "\u23A2";
8927 bottom = "\u23A3";
8928 font = "Size4-Regular";
8929 } else if (delim === "\\lceil" || delim === "\u2308") {
8930 top = "\u23A1";
8931 repeat = bottom = "\u23A2";
8932 font = "Size4-Regular";
8933 } else if (delim === "\\rfloor" || delim === "\u230B") {
8934 repeat = top = "\u23A5";
8935 bottom = "\u23A6";
8936 font = "Size4-Regular";
8937 } else if (delim === "\\rceil" || delim === "\u2309") {
8938 top = "\u23A4";
8939 repeat = bottom = "\u23A5";
8940 font = "Size4-Regular";
8941 } else if (delim === "(" || delim === "\\lparen") {
8942 top = "\u239B";
8943 repeat = "\u239C";
8944 bottom = "\u239D";
8945 font = "Size4-Regular";
8946 } else if (delim === ")" || delim === "\\rparen") {
8947 top = "\u239E";
8948 repeat = "\u239F";
8949 bottom = "\u23A0";
8950 font = "Size4-Regular";
8951 } else if (delim === "\\{" || delim === "\\lbrace") {
8952 top = "\u23A7";
8953 middle = "\u23A8";
8954 bottom = "\u23A9";
8955 repeat = "\u23AA";
8956 font = "Size4-Regular";
8957 } else if (delim === "\\}" || delim === "\\rbrace") {
8958 top = "\u23AB";
8959 middle = "\u23AC";
8960 bottom = "\u23AD";
8961 repeat = "\u23AA";
8962 font = "Size4-Regular";
8963 } else if (delim === "\\lgroup" || delim === "\u27EE") {
8964 top = "\u23A7";
8965 bottom = "\u23A9";
8966 repeat = "\u23AA";
8967 font = "Size4-Regular";
8968 } else if (delim === "\\rgroup" || delim === "\u27EF") {
8969 top = "\u23AB";
8970 bottom = "\u23AD";
8971 repeat = "\u23AA";
8972 font = "Size4-Regular";
8973 } else if (delim === "\\lmoustache" || delim === "\u23B0") {
8974 top = "\u23A7";
8975 bottom = "\u23AD";
8976 repeat = "\u23AA";
8977 font = "Size4-Regular";
8978 } else if (delim === "\\rmoustache" || delim === "\u23B1") {
8979 top = "\u23AB";
8980 bottom = "\u23A9";
8981 repeat = "\u23AA";
8982 font = "Size4-Regular";
8983 } // Get the metrics of the four sections
8984
8985
8986 var topMetrics = getMetrics(top, font, mode);
8987 var topHeightTotal = topMetrics.height + topMetrics.depth;
8988 var repeatMetrics = getMetrics(repeat, font, mode);
8989 var repeatHeightTotal = repeatMetrics.height + repeatMetrics.depth;
8990 var bottomMetrics = getMetrics(bottom, font, mode);
8991 var bottomHeightTotal = bottomMetrics.height + bottomMetrics.depth;
8992 var middleHeightTotal = 0;
8993 var middleFactor = 1;
8994
8995 if (middle !== null) {
8996 var middleMetrics = getMetrics(middle, font, mode);
8997 middleHeightTotal = middleMetrics.height + middleMetrics.depth;
8998 middleFactor = 2; // repeat symmetrically above and below middle
8999 } // Calcuate the minimal height that the delimiter can have.
9000 // It is at least the size of the top, bottom, and optional middle combined.
9001
9002
9003 var minHeight = topHeightTotal + bottomHeightTotal + middleHeightTotal; // Compute the number of copies of the repeat symbol we will need
9004
9005 var repeatCount = Math.max(0, Math.ceil((heightTotal - minHeight) / (middleFactor * repeatHeightTotal))); // Compute the total height of the delimiter including all the symbols
9006
9007 var realHeightTotal = minHeight + repeatCount * middleFactor * repeatHeightTotal; // The center of the delimiter is placed at the center of the axis. Note
9008 // that in this context, "center" means that the delimiter should be
9009 // centered around the axis in the current style, while normally it is
9010 // centered around the axis in textstyle.
9011
9012 var axisHeight = options.fontMetrics().axisHeight;
9013
9014 if (center) {
9015 axisHeight *= options.sizeMultiplier;
9016 } // Calculate the depth
9017
9018
9019 var depth = realHeightTotal / 2 - axisHeight; // Now, we start building the pieces that will go into the vlist
9020 // Keep a list of the pieces of the stacked delimiter
9021
9022 var stack = []; // Add the bottom symbol
9023
9024 stack.push(makeGlyphSpan(bottom, font, mode));
9025 stack.push(lap); // overlap
9026
9027 if (middle === null) {
9028 // The middle section will be an SVG. Make it an extra 0.016em tall.
9029 // We'll overlap by 0.008em at top and bottom.
9030 var innerHeight = realHeightTotal - topHeightTotal - bottomHeightTotal + 2 * lapInEms;
9031 stack.push(makeInner(repeat, innerHeight, options));
9032 } else {
9033 // When there is a middle bit, we need the middle part and two repeated
9034 // sections
9035 var _innerHeight = (realHeightTotal - topHeightTotal - bottomHeightTotal - middleHeightTotal) / 2 + 2 * lapInEms;
9036
9037 stack.push(makeInner(repeat, _innerHeight, options)); // Now insert the middle of the brace.
9038
9039 stack.push(lap);
9040 stack.push(makeGlyphSpan(middle, font, mode));
9041 stack.push(lap);
9042 stack.push(makeInner(repeat, _innerHeight, options));
9043 } // Add the top symbol
9044
9045
9046 stack.push(lap);
9047 stack.push(makeGlyphSpan(top, font, mode)); // Finally, build the vlist
9048
9049 var newOptions = options.havingBaseStyle(src_Style.TEXT);
9050 var inner = buildCommon.makeVList({
9051 positionType: "bottom",
9052 positionData: depth,
9053 children: stack
9054 }, newOptions);
9055 return styleWrap(buildCommon.makeSpan(["delimsizing", "mult"], [inner], newOptions), src_Style.TEXT, options, classes);
9056}; // All surds have 0.08em padding above the viniculum inside the SVG.
9057// That keeps browser span height rounding error from pinching the line.
9058
9059
9060var vbPad = 80; // padding above the surd, measured inside the viewBox.
9061
9062var emPad = 0.08; // padding, in ems, measured in the document.
9063
9064var sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, extraViniculum, options) {
9065 var path = sqrtPath(sqrtName, extraViniculum, viewBoxHeight);
9066 var pathNode = new PathNode(sqrtName, path);
9067 var svg = new SvgNode([pathNode], {
9068 // Note: 1000:1 ratio of viewBox to document em width.
9069 "width": "400em",
9070 "height": makeEm(height),
9071 "viewBox": "0 0 400000 " + viewBoxHeight,
9072 "preserveAspectRatio": "xMinYMin slice"
9073 });
9074 return buildCommon.makeSvgSpan(["hide-tail"], [svg], options);
9075};
9076/**
9077 * Make a sqrt image of the given height,
9078 */
9079
9080
9081var makeSqrtImage = function makeSqrtImage(height, options) {
9082 // Define a newOptions that removes the effect of size changes such as \Huge.
9083 // We don't pick different a height surd for \Huge. For it, we scale up.
9084 var newOptions = options.havingBaseSizing(); // Pick the desired surd glyph from a sequence of surds.
9085
9086 var delim = traverseSequence("\\surd", height * newOptions.sizeMultiplier, stackLargeDelimiterSequence, newOptions);
9087 var sizeMultiplier = newOptions.sizeMultiplier; // default
9088 // The standard sqrt SVGs each have a 0.04em thick viniculum.
9089 // If Settings.minRuleThickness is larger than that, we add extraViniculum.
9090
9091 var extraViniculum = Math.max(0, options.minRuleThickness - options.fontMetrics().sqrtRuleThickness); // Create a span containing an SVG image of a sqrt symbol.
9092
9093 var span;
9094 var spanHeight = 0;
9095 var texHeight = 0;
9096 var viewBoxHeight = 0;
9097 var advanceWidth; // We create viewBoxes with 80 units of "padding" above each surd.
9098 // Then browser rounding error on the parent span height will not
9099 // encroach on the ink of the viniculum. But that padding is not
9100 // included in the TeX-like `height` used for calculation of
9101 // vertical alignment. So texHeight = span.height < span.style.height.
9102
9103 if (delim.type === "small") {
9104 // Get an SVG that is derived from glyph U+221A in font KaTeX-Main.
9105 // 1000 unit normal glyph height.
9106 viewBoxHeight = 1000 + 1000 * extraViniculum + vbPad;
9107
9108 if (height < 1.0) {
9109 sizeMultiplier = 1.0; // mimic a \textfont radical
9110 } else if (height < 1.4) {
9111 sizeMultiplier = 0.7; // mimic a \scriptfont radical
9112 }
9113
9114 spanHeight = (1.0 + extraViniculum + emPad) / sizeMultiplier;
9115 texHeight = (1.00 + extraViniculum) / sizeMultiplier;
9116 span = sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, extraViniculum, options);
9117 span.style.minWidth = "0.853em";
9118 advanceWidth = 0.833 / sizeMultiplier; // from the font.
9119 } else if (delim.type === "large") {
9120 // These SVGs come from fonts: KaTeX_Size1, _Size2, etc.
9121 viewBoxHeight = (1000 + vbPad) * sizeToMaxHeight[delim.size];
9122 texHeight = (sizeToMaxHeight[delim.size] + extraViniculum) / sizeMultiplier;
9123 spanHeight = (sizeToMaxHeight[delim.size] + extraViniculum + emPad) / sizeMultiplier;
9124 span = sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, extraViniculum, options);
9125 span.style.minWidth = "1.02em";
9126 advanceWidth = 1.0 / sizeMultiplier; // 1.0 from the font.
9127 } else {
9128 // Tall sqrt. In TeX, this would be stacked using multiple glyphs.
9129 // We'll use a single SVG to accomplish the same thing.
9130 spanHeight = height + extraViniculum + emPad;
9131 texHeight = height + extraViniculum;
9132 viewBoxHeight = Math.floor(1000 * height + extraViniculum) + vbPad;
9133 span = sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, extraViniculum, options);
9134 span.style.minWidth = "0.742em";
9135 advanceWidth = 1.056;
9136 }
9137
9138 span.height = texHeight;
9139 span.style.height = makeEm(spanHeight);
9140 return {
9141 span: span,
9142 advanceWidth: advanceWidth,
9143 // Calculate the actual line width.
9144 // This actually should depend on the chosen font -- e.g. \boldmath
9145 // should use the thicker surd symbols from e.g. KaTeX_Main-Bold, and
9146 // have thicker rules.
9147 ruleWidth: (options.fontMetrics().sqrtRuleThickness + extraViniculum) * sizeMultiplier
9148 };
9149}; // There are three kinds of delimiters, delimiters that stack when they become
9150// too large
9151
9152
9153var stackLargeDelimiters = ["(", "\\lparen", ")", "\\rparen", "[", "\\lbrack", "]", "\\rbrack", "\\{", "\\lbrace", "\\}", "\\rbrace", "\\lfloor", "\\rfloor", "\u230A", "\u230B", "\\lceil", "\\rceil", "\u2308", "\u2309", "\\surd"]; // delimiters that always stack
9154
9155var stackAlwaysDelimiters = ["\\uparrow", "\\downarrow", "\\updownarrow", "\\Uparrow", "\\Downarrow", "\\Updownarrow", "|", "\\|", "\\vert", "\\Vert", "\\lvert", "\\rvert", "\\lVert", "\\rVert", "\\lgroup", "\\rgroup", "\u27EE", "\u27EF", "\\lmoustache", "\\rmoustache", "\u23B0", "\u23B1"]; // and delimiters that never stack
9156
9157var stackNeverDelimiters = ["<", ">", "\\langle", "\\rangle", "/", "\\backslash", "\\lt", "\\gt"]; // Metrics of the different sizes. Found by looking at TeX's output of
9158// $\bigl| // \Bigl| \biggl| \Biggl| \showlists$
9159// Used to create stacked delimiters of appropriate sizes in makeSizedDelim.
9160
9161var sizeToMaxHeight = [0, 1.2, 1.8, 2.4, 3.0];
9162/**
9163 * Used to create a delimiter of a specific size, where `size` is 1, 2, 3, or 4.
9164 */
9165
9166var makeSizedDelim = function makeSizedDelim(delim, size, options, mode, classes) {
9167 // < and > turn into \langle and \rangle in delimiters
9168 if (delim === "<" || delim === "\\lt" || delim === "\u27E8") {
9169 delim = "\\langle";
9170 } else if (delim === ">" || delim === "\\gt" || delim === "\u27E9") {
9171 delim = "\\rangle";
9172 } // Sized delimiters are never centered.
9173
9174
9175 if (utils.contains(stackLargeDelimiters, delim) || utils.contains(stackNeverDelimiters, delim)) {
9176 return makeLargeDelim(delim, size, false, options, mode, classes);
9177 } else if (utils.contains(stackAlwaysDelimiters, delim)) {
9178 return makeStackedDelim(delim, sizeToMaxHeight[size], false, options, mode, classes);
9179 } else {
9180 throw new src_ParseError("Illegal delimiter: '" + delim + "'");
9181 }
9182};
9183/**
9184 * There are three different sequences of delimiter sizes that the delimiters
9185 * follow depending on the kind of delimiter. This is used when creating custom
9186 * sized delimiters to decide whether to create a small, large, or stacked
9187 * delimiter.
9188 *
9189 * In real TeX, these sequences aren't explicitly defined, but are instead
9190 * defined inside the font metrics. Since there are only three sequences that
9191 * are possible for the delimiters that TeX defines, it is easier to just encode
9192 * them explicitly here.
9193 */
9194
9195
9196// Delimiters that never stack try small delimiters and large delimiters only
9197var stackNeverDelimiterSequence = [{
9198 type: "small",
9199 style: src_Style.SCRIPTSCRIPT
9200}, {
9201 type: "small",
9202 style: src_Style.SCRIPT
9203}, {
9204 type: "small",
9205 style: src_Style.TEXT
9206}, {
9207 type: "large",
9208 size: 1
9209}, {
9210 type: "large",
9211 size: 2
9212}, {
9213 type: "large",
9214 size: 3
9215}, {
9216 type: "large",
9217 size: 4
9218}]; // Delimiters that always stack try the small delimiters first, then stack
9219
9220var stackAlwaysDelimiterSequence = [{
9221 type: "small",
9222 style: src_Style.SCRIPTSCRIPT
9223}, {
9224 type: "small",
9225 style: src_Style.SCRIPT
9226}, {
9227 type: "small",
9228 style: src_Style.TEXT
9229}, {
9230 type: "stack"
9231}]; // Delimiters that stack when large try the small and then large delimiters, and
9232// stack afterwards
9233
9234var stackLargeDelimiterSequence = [{
9235 type: "small",
9236 style: src_Style.SCRIPTSCRIPT
9237}, {
9238 type: "small",
9239 style: src_Style.SCRIPT
9240}, {
9241 type: "small",
9242 style: src_Style.TEXT
9243}, {
9244 type: "large",
9245 size: 1
9246}, {
9247 type: "large",
9248 size: 2
9249}, {
9250 type: "large",
9251 size: 3
9252}, {
9253 type: "large",
9254 size: 4
9255}, {
9256 type: "stack"
9257}];
9258/**
9259 * Get the font used in a delimiter based on what kind of delimiter it is.
9260 * TODO(#963) Use more specific font family return type once that is introduced.
9261 */
9262
9263var delimTypeToFont = function delimTypeToFont(type) {
9264 if (type.type === "small") {
9265 return "Main-Regular";
9266 } else if (type.type === "large") {
9267 return "Size" + type.size + "-Regular";
9268 } else if (type.type === "stack") {
9269 return "Size4-Regular";
9270 } else {
9271 throw new Error("Add support for delim type '" + type.type + "' here.");
9272 }
9273};
9274/**
9275 * Traverse a sequence of types of delimiters to decide what kind of delimiter
9276 * should be used to create a delimiter of the given height+depth.
9277 */
9278
9279
9280var traverseSequence = function traverseSequence(delim, height, sequence, options) {
9281 // Here, we choose the index we should start at in the sequences. In smaller
9282 // sizes (which correspond to larger numbers in style.size) we start earlier
9283 // in the sequence. Thus, scriptscript starts at index 3-3=0, script starts
9284 // at index 3-2=1, text starts at 3-1=2, and display starts at min(2,3-0)=2
9285 var start = Math.min(2, 3 - options.style.size);
9286
9287 for (var i = start; i < sequence.length; i++) {
9288 if (sequence[i].type === "stack") {
9289 // This is always the last delimiter, so we just break the loop now.
9290 break;
9291 }
9292
9293 var metrics = getMetrics(delim, delimTypeToFont(sequence[i]), "math");
9294 var heightDepth = metrics.height + metrics.depth; // Small delimiters are scaled down versions of the same font, so we
9295 // account for the style change size.
9296
9297 if (sequence[i].type === "small") {
9298 var newOptions = options.havingBaseStyle(sequence[i].style);
9299 heightDepth *= newOptions.sizeMultiplier;
9300 } // Check if the delimiter at this size works for the given height.
9301
9302
9303 if (heightDepth > height) {
9304 return sequence[i];
9305 }
9306 } // If we reached the end of the sequence, return the last sequence element.
9307
9308
9309 return sequence[sequence.length - 1];
9310};
9311/**
9312 * Make a delimiter of a given height+depth, with optional centering. Here, we
9313 * traverse the sequences, and create a delimiter that the sequence tells us to.
9314 */
9315
9316
9317var makeCustomSizedDelim = function makeCustomSizedDelim(delim, height, center, options, mode, classes) {
9318 if (delim === "<" || delim === "\\lt" || delim === "\u27E8") {
9319 delim = "\\langle";
9320 } else if (delim === ">" || delim === "\\gt" || delim === "\u27E9") {
9321 delim = "\\rangle";
9322 } // Decide what sequence to use
9323
9324
9325 var sequence;
9326
9327 if (utils.contains(stackNeverDelimiters, delim)) {
9328 sequence = stackNeverDelimiterSequence;
9329 } else if (utils.contains(stackLargeDelimiters, delim)) {
9330 sequence = stackLargeDelimiterSequence;
9331 } else {
9332 sequence = stackAlwaysDelimiterSequence;
9333 } // Look through the sequence
9334
9335
9336 var delimType = traverseSequence(delim, height, sequence, options); // Get the delimiter from font glyphs.
9337 // Depending on the sequence element we decided on, call the
9338 // appropriate function.
9339
9340 if (delimType.type === "small") {
9341 return makeSmallDelim(delim, delimType.style, center, options, mode, classes);
9342 } else if (delimType.type === "large") {
9343 return makeLargeDelim(delim, delimType.size, center, options, mode, classes);
9344 } else
9345 /* if (delimType.type === "stack") */
9346 {
9347 return makeStackedDelim(delim, height, center, options, mode, classes);
9348 }
9349};
9350/**
9351 * Make a delimiter for use with `\left` and `\right`, given a height and depth
9352 * of an expression that the delimiters surround.
9353 */
9354
9355
9356var makeLeftRightDelim = function makeLeftRightDelim(delim, height, depth, options, mode, classes) {
9357 // We always center \left/\right delimiters, so the axis is always shifted
9358 var axisHeight = options.fontMetrics().axisHeight * options.sizeMultiplier; // Taken from TeX source, tex.web, function make_left_right
9359
9360 var delimiterFactor = 901;
9361 var delimiterExtend = 5.0 / options.fontMetrics().ptPerEm;
9362 var maxDistFromAxis = Math.max(height - axisHeight, depth + axisHeight);
9363 var totalHeight = Math.max( // In real TeX, calculations are done using integral values which are
9364 // 65536 per pt, or 655360 per em. So, the division here truncates in
9365 // TeX but doesn't here, producing different results. If we wanted to
9366 // exactly match TeX's calculation, we could do
9367 // Math.floor(655360 * maxDistFromAxis / 500) *
9368 // delimiterFactor / 655360
9369 // (To see the difference, compare
9370 // x^{x^{\left(\rule{0.1em}{0.68em}\right)}}
9371 // in TeX and KaTeX)
9372 maxDistFromAxis / 500 * delimiterFactor, 2 * maxDistFromAxis - delimiterExtend); // Finally, we defer to `makeCustomSizedDelim` with our calculated total
9373 // height
9374
9375 return makeCustomSizedDelim(delim, totalHeight, true, options, mode, classes);
9376};
9377
9378/* harmony default export */ var delimiter = ({
9379 sqrtImage: makeSqrtImage,
9380 sizedDelim: makeSizedDelim,
9381 sizeToMaxHeight: sizeToMaxHeight,
9382 customSizedDelim: makeCustomSizedDelim,
9383 leftRightDelim: makeLeftRightDelim
9384});
9385;// CONCATENATED MODULE: ./src/functions/delimsizing.js
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396// Extra data needed for the delimiter handler down below
9397var delimiterSizes = {
9398 "\\bigl": {
9399 mclass: "mopen",
9400 size: 1
9401 },
9402 "\\Bigl": {
9403 mclass: "mopen",
9404 size: 2
9405 },
9406 "\\biggl": {
9407 mclass: "mopen",
9408 size: 3
9409 },
9410 "\\Biggl": {
9411 mclass: "mopen",
9412 size: 4
9413 },
9414 "\\bigr": {
9415 mclass: "mclose",
9416 size: 1
9417 },
9418 "\\Bigr": {
9419 mclass: "mclose",
9420 size: 2
9421 },
9422 "\\biggr": {
9423 mclass: "mclose",
9424 size: 3
9425 },
9426 "\\Biggr": {
9427 mclass: "mclose",
9428 size: 4
9429 },
9430 "\\bigm": {
9431 mclass: "mrel",
9432 size: 1
9433 },
9434 "\\Bigm": {
9435 mclass: "mrel",
9436 size: 2
9437 },
9438 "\\biggm": {
9439 mclass: "mrel",
9440 size: 3
9441 },
9442 "\\Biggm": {
9443 mclass: "mrel",
9444 size: 4
9445 },
9446 "\\big": {
9447 mclass: "mord",
9448 size: 1
9449 },
9450 "\\Big": {
9451 mclass: "mord",
9452 size: 2
9453 },
9454 "\\bigg": {
9455 mclass: "mord",
9456 size: 3
9457 },
9458 "\\Bigg": {
9459 mclass: "mord",
9460 size: 4
9461 }
9462};
9463var delimiters = ["(", "\\lparen", ")", "\\rparen", "[", "\\lbrack", "]", "\\rbrack", "\\{", "\\lbrace", "\\}", "\\rbrace", "\\lfloor", "\\rfloor", "\u230A", "\u230B", "\\lceil", "\\rceil", "\u2308", "\u2309", "<", ">", "\\langle", "\u27E8", "\\rangle", "\u27E9", "\\lt", "\\gt", "\\lvert", "\\rvert", "\\lVert", "\\rVert", "\\lgroup", "\\rgroup", "\u27EE", "\u27EF", "\\lmoustache", "\\rmoustache", "\u23B0", "\u23B1", "/", "\\backslash", "|", "\\vert", "\\|", "\\Vert", "\\uparrow", "\\Uparrow", "\\downarrow", "\\Downarrow", "\\updownarrow", "\\Updownarrow", "."];
9464
9465// Delimiter functions
9466function checkDelimiter(delim, context) {
9467 var symDelim = checkSymbolNodeType(delim);
9468
9469 if (symDelim && utils.contains(delimiters, symDelim.text)) {
9470 return symDelim;
9471 } else if (symDelim) {
9472 throw new src_ParseError("Invalid delimiter '" + symDelim.text + "' after '" + context.funcName + "'", delim);
9473 } else {
9474 throw new src_ParseError("Invalid delimiter type '" + delim.type + "'", delim);
9475 }
9476}
9477
9478defineFunction({
9479 type: "delimsizing",
9480 names: ["\\bigl", "\\Bigl", "\\biggl", "\\Biggl", "\\bigr", "\\Bigr", "\\biggr", "\\Biggr", "\\bigm", "\\Bigm", "\\biggm", "\\Biggm", "\\big", "\\Big", "\\bigg", "\\Bigg"],
9481 props: {
9482 numArgs: 1,
9483 argTypes: ["primitive"]
9484 },
9485 handler: function handler(context, args) {
9486 var delim = checkDelimiter(args[0], context);
9487 return {
9488 type: "delimsizing",
9489 mode: context.parser.mode,
9490 size: delimiterSizes[context.funcName].size,
9491 mclass: delimiterSizes[context.funcName].mclass,
9492 delim: delim.text
9493 };
9494 },
9495 htmlBuilder: function htmlBuilder(group, options) {
9496 if (group.delim === ".") {
9497 // Empty delimiters still count as elements, even though they don't
9498 // show anything.
9499 return buildCommon.makeSpan([group.mclass]);
9500 } // Use delimiter.sizedDelim to generate the delimiter.
9501
9502
9503 return delimiter.sizedDelim(group.delim, group.size, options, group.mode, [group.mclass]);
9504 },
9505 mathmlBuilder: function mathmlBuilder(group) {
9506 var children = [];
9507
9508 if (group.delim !== ".") {
9509 children.push(makeText(group.delim, group.mode));
9510 }
9511
9512 var node = new mathMLTree.MathNode("mo", children);
9513
9514 if (group.mclass === "mopen" || group.mclass === "mclose") {
9515 // Only some of the delimsizing functions act as fences, and they
9516 // return "mopen" or "mclose" mclass.
9517 node.setAttribute("fence", "true");
9518 } else {
9519 // Explicitly disable fencing if it's not a fence, to override the
9520 // defaults.
9521 node.setAttribute("fence", "false");
9522 }
9523
9524 node.setAttribute("stretchy", "true");
9525 var size = makeEm(delimiter.sizeToMaxHeight[group.size]);
9526 node.setAttribute("minsize", size);
9527 node.setAttribute("maxsize", size);
9528 return node;
9529 }
9530});
9531
9532function assertParsed(group) {
9533 if (!group.body) {
9534 throw new Error("Bug: The leftright ParseNode wasn't fully parsed.");
9535 }
9536}
9537
9538defineFunction({
9539 type: "leftright-right",
9540 names: ["\\right"],
9541 props: {
9542 numArgs: 1,
9543 primitive: true
9544 },
9545 handler: function handler(context, args) {
9546 // \left case below triggers parsing of \right in
9547 // `const right = parser.parseFunction();`
9548 // uses this return value.
9549 var color = context.parser.gullet.macros.get("\\current@color");
9550
9551 if (color && typeof color !== "string") {
9552 throw new src_ParseError("\\current@color set to non-string in \\right");
9553 }
9554
9555 return {
9556 type: "leftright-right",
9557 mode: context.parser.mode,
9558 delim: checkDelimiter(args[0], context).text,
9559 color: color // undefined if not set via \color
9560
9561 };
9562 }
9563});
9564defineFunction({
9565 type: "leftright",
9566 names: ["\\left"],
9567 props: {
9568 numArgs: 1,
9569 primitive: true
9570 },
9571 handler: function handler(context, args) {
9572 var delim = checkDelimiter(args[0], context);
9573 var parser = context.parser; // Parse out the implicit body
9574
9575 ++parser.leftrightDepth; // parseExpression stops before '\\right'
9576
9577 var body = parser.parseExpression(false);
9578 --parser.leftrightDepth; // Check the next token
9579
9580 parser.expect("\\right", false);
9581 var right = assertNodeType(parser.parseFunction(), "leftright-right");
9582 return {
9583 type: "leftright",
9584 mode: parser.mode,
9585 body: body,
9586 left: delim.text,
9587 right: right.delim,
9588 rightColor: right.color
9589 };
9590 },
9591 htmlBuilder: function htmlBuilder(group, options) {
9592 assertParsed(group); // Build the inner expression
9593
9594 var inner = buildExpression(group.body, options, true, ["mopen", "mclose"]);
9595 var innerHeight = 0;
9596 var innerDepth = 0;
9597 var hadMiddle = false; // Calculate its height and depth
9598
9599 for (var i = 0; i < inner.length; i++) {
9600 // Property `isMiddle` not defined on `span`. See comment in
9601 // "middle"'s htmlBuilder.
9602 // $FlowFixMe
9603 if (inner[i].isMiddle) {
9604 hadMiddle = true;
9605 } else {
9606 innerHeight = Math.max(inner[i].height, innerHeight);
9607 innerDepth = Math.max(inner[i].depth, innerDepth);
9608 }
9609 } // The size of delimiters is the same, regardless of what style we are
9610 // in. Thus, to correctly calculate the size of delimiter we need around
9611 // a group, we scale down the inner size based on the size.
9612
9613
9614 innerHeight *= options.sizeMultiplier;
9615 innerDepth *= options.sizeMultiplier;
9616 var leftDelim;
9617
9618 if (group.left === ".") {
9619 // Empty delimiters in \left and \right make null delimiter spaces.
9620 leftDelim = makeNullDelimiter(options, ["mopen"]);
9621 } else {
9622 // Otherwise, use leftRightDelim to generate the correct sized
9623 // delimiter.
9624 leftDelim = delimiter.leftRightDelim(group.left, innerHeight, innerDepth, options, group.mode, ["mopen"]);
9625 } // Add it to the beginning of the expression
9626
9627
9628 inner.unshift(leftDelim); // Handle middle delimiters
9629
9630 if (hadMiddle) {
9631 for (var _i = 1; _i < inner.length; _i++) {
9632 var middleDelim = inner[_i]; // Property `isMiddle` not defined on `span`. See comment in
9633 // "middle"'s htmlBuilder.
9634 // $FlowFixMe
9635
9636 var isMiddle = middleDelim.isMiddle;
9637
9638 if (isMiddle) {
9639 // Apply the options that were active when \middle was called
9640 inner[_i] = delimiter.leftRightDelim(isMiddle.delim, innerHeight, innerDepth, isMiddle.options, group.mode, []);
9641 }
9642 }
9643 }
9644
9645 var rightDelim; // Same for the right delimiter, but using color specified by \color
9646
9647 if (group.right === ".") {
9648 rightDelim = makeNullDelimiter(options, ["mclose"]);
9649 } else {
9650 var colorOptions = group.rightColor ? options.withColor(group.rightColor) : options;
9651 rightDelim = delimiter.leftRightDelim(group.right, innerHeight, innerDepth, colorOptions, group.mode, ["mclose"]);
9652 } // Add it to the end of the expression.
9653
9654
9655 inner.push(rightDelim);
9656 return buildCommon.makeSpan(["minner"], inner, options);
9657 },
9658 mathmlBuilder: function mathmlBuilder(group, options) {
9659 assertParsed(group);
9660 var inner = buildMathML_buildExpression(group.body, options);
9661
9662 if (group.left !== ".") {
9663 var leftNode = new mathMLTree.MathNode("mo", [makeText(group.left, group.mode)]);
9664 leftNode.setAttribute("fence", "true");
9665 inner.unshift(leftNode);
9666 }
9667
9668 if (group.right !== ".") {
9669 var rightNode = new mathMLTree.MathNode("mo", [makeText(group.right, group.mode)]);
9670 rightNode.setAttribute("fence", "true");
9671
9672 if (group.rightColor) {
9673 rightNode.setAttribute("mathcolor", group.rightColor);
9674 }
9675
9676 inner.push(rightNode);
9677 }
9678
9679 return makeRow(inner);
9680 }
9681});
9682defineFunction({
9683 type: "middle",
9684 names: ["\\middle"],
9685 props: {
9686 numArgs: 1,
9687 primitive: true
9688 },
9689 handler: function handler(context, args) {
9690 var delim = checkDelimiter(args[0], context);
9691
9692 if (!context.parser.leftrightDepth) {
9693 throw new src_ParseError("\\middle without preceding \\left", delim);
9694 }
9695
9696 return {
9697 type: "middle",
9698 mode: context.parser.mode,
9699 delim: delim.text
9700 };
9701 },
9702 htmlBuilder: function htmlBuilder(group, options) {
9703 var middleDelim;
9704
9705 if (group.delim === ".") {
9706 middleDelim = makeNullDelimiter(options, []);
9707 } else {
9708 middleDelim = delimiter.sizedDelim(group.delim, 1, options, group.mode, []);
9709 var isMiddle = {
9710 delim: group.delim,
9711 options: options
9712 }; // Property `isMiddle` not defined on `span`. It is only used in
9713 // this file above.
9714 // TODO: Fix this violation of the `span` type and possibly rename
9715 // things since `isMiddle` sounds like a boolean, but is a struct.
9716 // $FlowFixMe
9717
9718 middleDelim.isMiddle = isMiddle;
9719 }
9720
9721 return middleDelim;
9722 },
9723 mathmlBuilder: function mathmlBuilder(group, options) {
9724 // A Firefox \middle will strech a character vertically only if it
9725 // is in the fence part of the operator dictionary at:
9726 // https://www.w3.org/TR/MathML3/appendixc.html.
9727 // So we need to avoid U+2223 and use plain "|" instead.
9728 var textNode = group.delim === "\\vert" || group.delim === "|" ? makeText("|", "text") : makeText(group.delim, group.mode);
9729 var middleNode = new mathMLTree.MathNode("mo", [textNode]);
9730 middleNode.setAttribute("fence", "true"); // MathML gives 5/18em spacing to each <mo> element.
9731 // \middle should get delimiter spacing instead.
9732
9733 middleNode.setAttribute("lspace", "0.05em");
9734 middleNode.setAttribute("rspace", "0.05em");
9735 return middleNode;
9736 }
9737});
9738;// CONCATENATED MODULE: ./src/functions/enclose.js
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751var enclose_htmlBuilder = function htmlBuilder(group, options) {
9752 // \cancel, \bcancel, \xcancel, \sout, \fbox, \colorbox, \fcolorbox, \phase
9753 // Some groups can return document fragments. Handle those by wrapping
9754 // them in a span.
9755 var inner = buildCommon.wrapFragment(buildGroup(group.body, options), options);
9756 var label = group.label.substr(1);
9757 var scale = options.sizeMultiplier;
9758 var img;
9759 var imgShift = 0; // In the LaTeX cancel package, line geometry is slightly different
9760 // depending on whether the subject is wider than it is tall, or vice versa.
9761 // We don't know the width of a group, so as a proxy, we test if
9762 // the subject is a single character. This captures most of the
9763 // subjects that should get the "tall" treatment.
9764
9765 var isSingleChar = utils.isCharacterBox(group.body);
9766
9767 if (label === "sout") {
9768 img = buildCommon.makeSpan(["stretchy", "sout"]);
9769 img.height = options.fontMetrics().defaultRuleThickness / scale;
9770 imgShift = -0.5 * options.fontMetrics().xHeight;
9771 } else if (label === "phase") {
9772 // Set a couple of dimensions from the steinmetz package.
9773 var lineWeight = calculateSize({
9774 number: 0.6,
9775 unit: "pt"
9776 }, options);
9777 var clearance = calculateSize({
9778 number: 0.35,
9779 unit: "ex"
9780 }, options); // Prevent size changes like \Huge from affecting line thickness
9781
9782 var newOptions = options.havingBaseSizing();
9783 scale = scale / newOptions.sizeMultiplier;
9784 var angleHeight = inner.height + inner.depth + lineWeight + clearance; // Reserve a left pad for the angle.
9785
9786 inner.style.paddingLeft = makeEm(angleHeight / 2 + lineWeight); // Create an SVG
9787
9788 var viewBoxHeight = Math.floor(1000 * angleHeight * scale);
9789 var path = phasePath(viewBoxHeight);
9790 var svgNode = new SvgNode([new PathNode("phase", path)], {
9791 "width": "400em",
9792 "height": makeEm(viewBoxHeight / 1000),
9793 "viewBox": "0 0 400000 " + viewBoxHeight,
9794 "preserveAspectRatio": "xMinYMin slice"
9795 }); // Wrap it in a span with overflow: hidden.
9796
9797 img = buildCommon.makeSvgSpan(["hide-tail"], [svgNode], options);
9798 img.style.height = makeEm(angleHeight);
9799 imgShift = inner.depth + lineWeight + clearance;
9800 } else {
9801 // Add horizontal padding
9802 if (/cancel/.test(label)) {
9803 if (!isSingleChar) {
9804 inner.classes.push("cancel-pad");
9805 }
9806 } else if (label === "angl") {
9807 inner.classes.push("anglpad");
9808 } else {
9809 inner.classes.push("boxpad");
9810 } // Add vertical padding
9811
9812
9813 var topPad = 0;
9814 var bottomPad = 0;
9815 var ruleThickness = 0; // ref: cancel package: \advance\totalheight2\p@ % "+2"
9816
9817 if (/box/.test(label)) {
9818 ruleThickness = Math.max(options.fontMetrics().fboxrule, // default
9819 options.minRuleThickness // User override.
9820 );
9821 topPad = options.fontMetrics().fboxsep + (label === "colorbox" ? 0 : ruleThickness);
9822 bottomPad = topPad;
9823 } else if (label === "angl") {
9824 ruleThickness = Math.max(options.fontMetrics().defaultRuleThickness, options.minRuleThickness);
9825 topPad = 4 * ruleThickness; // gap = 3 × line, plus the line itself.
9826
9827 bottomPad = Math.max(0, 0.25 - inner.depth);
9828 } else {
9829 topPad = isSingleChar ? 0.2 : 0;
9830 bottomPad = topPad;
9831 }
9832
9833 img = stretchy.encloseSpan(inner, label, topPad, bottomPad, options);
9834
9835 if (/fbox|boxed|fcolorbox/.test(label)) {
9836 img.style.borderStyle = "solid";
9837 img.style.borderWidth = makeEm(ruleThickness);
9838 } else if (label === "angl" && ruleThickness !== 0.049) {
9839 img.style.borderTopWidth = makeEm(ruleThickness);
9840 img.style.borderRightWidth = makeEm(ruleThickness);
9841 }
9842
9843 imgShift = inner.depth + bottomPad;
9844
9845 if (group.backgroundColor) {
9846 img.style.backgroundColor = group.backgroundColor;
9847
9848 if (group.borderColor) {
9849 img.style.borderColor = group.borderColor;
9850 }
9851 }
9852 }
9853
9854 var vlist;
9855
9856 if (group.backgroundColor) {
9857 vlist = buildCommon.makeVList({
9858 positionType: "individualShift",
9859 children: [// Put the color background behind inner;
9860 {
9861 type: "elem",
9862 elem: img,
9863 shift: imgShift
9864 }, {
9865 type: "elem",
9866 elem: inner,
9867 shift: 0
9868 }]
9869 }, options);
9870 } else {
9871 var classes = /cancel|phase/.test(label) ? ["svg-align"] : [];
9872 vlist = buildCommon.makeVList({
9873 positionType: "individualShift",
9874 children: [// Write the \cancel stroke on top of inner.
9875 {
9876 type: "elem",
9877 elem: inner,
9878 shift: 0
9879 }, {
9880 type: "elem",
9881 elem: img,
9882 shift: imgShift,
9883 wrapperClasses: classes
9884 }]
9885 }, options);
9886 }
9887
9888 if (/cancel/.test(label)) {
9889 // The cancel package documentation says that cancel lines add their height
9890 // to the expression, but tests show that isn't how it actually works.
9891 vlist.height = inner.height;
9892 vlist.depth = inner.depth;
9893 }
9894
9895 if (/cancel/.test(label) && !isSingleChar) {
9896 // cancel does not create horiz space for its line extension.
9897 return buildCommon.makeSpan(["mord", "cancel-lap"], [vlist], options);
9898 } else {
9899 return buildCommon.makeSpan(["mord"], [vlist], options);
9900 }
9901};
9902
9903var enclose_mathmlBuilder = function mathmlBuilder(group, options) {
9904 var fboxsep = 0;
9905 var node = new mathMLTree.MathNode(group.label.indexOf("colorbox") > -1 ? "mpadded" : "menclose", [buildMathML_buildGroup(group.body, options)]);
9906
9907 switch (group.label) {
9908 case "\\cancel":
9909 node.setAttribute("notation", "updiagonalstrike");
9910 break;
9911
9912 case "\\bcancel":
9913 node.setAttribute("notation", "downdiagonalstrike");
9914 break;
9915
9916 case "\\phase":
9917 node.setAttribute("notation", "phasorangle");
9918 break;
9919
9920 case "\\sout":
9921 node.setAttribute("notation", "horizontalstrike");
9922 break;
9923
9924 case "\\fbox":
9925 node.setAttribute("notation", "box");
9926 break;
9927
9928 case "\\angl":
9929 node.setAttribute("notation", "actuarial");
9930 break;
9931
9932 case "\\fcolorbox":
9933 case "\\colorbox":
9934 // <menclose> doesn't have a good notation option. So use <mpadded>
9935 // instead. Set some attributes that come included with <menclose>.
9936 fboxsep = options.fontMetrics().fboxsep * options.fontMetrics().ptPerEm;
9937 node.setAttribute("width", "+" + 2 * fboxsep + "pt");
9938 node.setAttribute("height", "+" + 2 * fboxsep + "pt");
9939 node.setAttribute("lspace", fboxsep + "pt"); //
9940
9941 node.setAttribute("voffset", fboxsep + "pt");
9942
9943 if (group.label === "\\fcolorbox") {
9944 var thk = Math.max(options.fontMetrics().fboxrule, // default
9945 options.minRuleThickness // user override
9946 );
9947 node.setAttribute("style", "border: " + thk + "em solid " + String(group.borderColor));
9948 }
9949
9950 break;
9951
9952 case "\\xcancel":
9953 node.setAttribute("notation", "updiagonalstrike downdiagonalstrike");
9954 break;
9955 }
9956
9957 if (group.backgroundColor) {
9958 node.setAttribute("mathbackground", group.backgroundColor);
9959 }
9960
9961 return node;
9962};
9963
9964defineFunction({
9965 type: "enclose",
9966 names: ["\\colorbox"],
9967 props: {
9968 numArgs: 2,
9969 allowedInText: true,
9970 argTypes: ["color", "text"]
9971 },
9972 handler: function handler(_ref, args, optArgs) {
9973 var parser = _ref.parser,
9974 funcName = _ref.funcName;
9975 var color = assertNodeType(args[0], "color-token").color;
9976 var body = args[1];
9977 return {
9978 type: "enclose",
9979 mode: parser.mode,
9980 label: funcName,
9981 backgroundColor: color,
9982 body: body
9983 };
9984 },
9985 htmlBuilder: enclose_htmlBuilder,
9986 mathmlBuilder: enclose_mathmlBuilder
9987});
9988defineFunction({
9989 type: "enclose",
9990 names: ["\\fcolorbox"],
9991 props: {
9992 numArgs: 3,
9993 allowedInText: true,
9994 argTypes: ["color", "color", "text"]
9995 },
9996 handler: function handler(_ref2, args, optArgs) {
9997 var parser = _ref2.parser,
9998 funcName = _ref2.funcName;
9999 var borderColor = assertNodeType(args[0], "color-token").color;
10000 var backgroundColor = assertNodeType(args[1], "color-token").color;
10001 var body = args[2];
10002 return {
10003 type: "enclose",
10004 mode: parser.mode,
10005 label: funcName,
10006 backgroundColor: backgroundColor,
10007 borderColor: borderColor,
10008 body: body
10009 };
10010 },
10011 htmlBuilder: enclose_htmlBuilder,
10012 mathmlBuilder: enclose_mathmlBuilder
10013});
10014defineFunction({
10015 type: "enclose",
10016 names: ["\\fbox"],
10017 props: {
10018 numArgs: 1,
10019 argTypes: ["hbox"],
10020 allowedInText: true
10021 },
10022 handler: function handler(_ref3, args) {
10023 var parser = _ref3.parser;
10024 return {
10025 type: "enclose",
10026 mode: parser.mode,
10027 label: "\\fbox",
10028 body: args[0]
10029 };
10030 }
10031});
10032defineFunction({
10033 type: "enclose",
10034 names: ["\\cancel", "\\bcancel", "\\xcancel", "\\sout", "\\phase"],
10035 props: {
10036 numArgs: 1
10037 },
10038 handler: function handler(_ref4, args) {
10039 var parser = _ref4.parser,
10040 funcName = _ref4.funcName;
10041 var body = args[0];
10042 return {
10043 type: "enclose",
10044 mode: parser.mode,
10045 label: funcName,
10046 body: body
10047 };
10048 },
10049 htmlBuilder: enclose_htmlBuilder,
10050 mathmlBuilder: enclose_mathmlBuilder
10051});
10052defineFunction({
10053 type: "enclose",
10054 names: ["\\angl"],
10055 props: {
10056 numArgs: 1,
10057 argTypes: ["hbox"],
10058 allowedInText: false
10059 },
10060 handler: function handler(_ref5, args) {
10061 var parser = _ref5.parser;
10062 return {
10063 type: "enclose",
10064 mode: parser.mode,
10065 label: "\\angl",
10066 body: args[0]
10067 };
10068 }
10069});
10070;// CONCATENATED MODULE: ./src/defineEnvironment.js
10071
10072
10073/**
10074 * All registered environments.
10075 * `environments.js` exports this same dictionary again and makes it public.
10076 * `Parser.js` requires this dictionary via `environments.js`.
10077 */
10078var _environments = {};
10079function defineEnvironment(_ref) {
10080 var type = _ref.type,
10081 names = _ref.names,
10082 props = _ref.props,
10083 handler = _ref.handler,
10084 htmlBuilder = _ref.htmlBuilder,
10085 mathmlBuilder = _ref.mathmlBuilder;
10086 // Set default values of environments.
10087 var data = {
10088 type: type,
10089 numArgs: props.numArgs || 0,
10090 allowedInText: false,
10091 numOptionalArgs: 0,
10092 handler: handler
10093 };
10094
10095 for (var i = 0; i < names.length; ++i) {
10096 // TODO: The value type of _environments should be a type union of all
10097 // possible `EnvSpec<>` possibilities instead of `EnvSpec<*>`, which is
10098 // an existential type.
10099 _environments[names[i]] = data;
10100 }
10101
10102 if (htmlBuilder) {
10103 _htmlGroupBuilders[type] = htmlBuilder;
10104 }
10105
10106 if (mathmlBuilder) {
10107 _mathmlGroupBuilders[type] = mathmlBuilder;
10108 }
10109}
10110;// CONCATENATED MODULE: ./src/defineMacro.js
10111
10112
10113/**
10114 * All registered global/built-in macros.
10115 * `macros.js` exports this same dictionary again and makes it public.
10116 * `Parser.js` requires this dictionary via `macros.js`.
10117 */
10118var _macros = {}; // This function might one day accept an additional argument and do more things.
10119
10120function defineMacro(name, body) {
10121 _macros[name] = body;
10122}
10123;// CONCATENATED MODULE: ./src/SourceLocation.js
10124/**
10125 * Lexing or parsing positional information for error reporting.
10126 * This object is immutable.
10127 */
10128var SourceLocation = /*#__PURE__*/function () {
10129 // The + prefix indicates that these fields aren't writeable
10130 // Lexer holding the input string.
10131 // Start offset, zero-based inclusive.
10132 // End offset, zero-based exclusive.
10133 function SourceLocation(lexer, start, end) {
10134 this.lexer = void 0;
10135 this.start = void 0;
10136 this.end = void 0;
10137 this.lexer = lexer;
10138 this.start = start;
10139 this.end = end;
10140 }
10141 /**
10142 * Merges two `SourceLocation`s from location providers, given they are
10143 * provided in order of appearance.
10144 * - Returns the first one's location if only the first is provided.
10145 * - Returns a merged range of the first and the last if both are provided
10146 * and their lexers match.
10147 * - Otherwise, returns null.
10148 */
10149
10150
10151 SourceLocation.range = function range(first, second) {
10152 if (!second) {
10153 return first && first.loc;
10154 } else if (!first || !first.loc || !second.loc || first.loc.lexer !== second.loc.lexer) {
10155 return null;
10156 } else {
10157 return new SourceLocation(first.loc.lexer, first.loc.start, second.loc.end);
10158 }
10159 };
10160
10161 return SourceLocation;
10162}();
10163
10164
10165;// CONCATENATED MODULE: ./src/Token.js
10166
10167/**
10168 * Interface required to break circular dependency between Token, Lexer, and
10169 * ParseError.
10170 */
10171
10172/**
10173 * The resulting token returned from `lex`.
10174 *
10175 * It consists of the token text plus some position information.
10176 * The position information is essentially a range in an input string,
10177 * but instead of referencing the bare input string, we refer to the lexer.
10178 * That way it is possible to attach extra metadata to the input string,
10179 * like for example a file name or similar.
10180 *
10181 * The position information is optional, so it is OK to construct synthetic
10182 * tokens if appropriate. Not providing available position information may
10183 * lead to degraded error reporting, though.
10184 */
10185var Token = /*#__PURE__*/function () {
10186 // don't expand the token
10187 // used in \noexpand
10188 function Token(text, // the text of this token
10189 loc) {
10190 this.text = void 0;
10191 this.loc = void 0;
10192 this.noexpand = void 0;
10193 this.treatAsRelax = void 0;
10194 this.text = text;
10195 this.loc = loc;
10196 }
10197 /**
10198 * Given a pair of tokens (this and endToken), compute a `Token` encompassing
10199 * the whole input range enclosed by these two.
10200 */
10201
10202
10203 var _proto = Token.prototype;
10204
10205 _proto.range = function range(endToken, // last token of the range, inclusive
10206 text // the text of the newly constructed token
10207 ) {
10208 return new Token(text, SourceLocation.range(this, endToken));
10209 };
10210
10211 return Token;
10212}();
10213;// CONCATENATED MODULE: ./src/environments/array.js
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230// Helper functions
10231function getHLines(parser) {
10232 // Return an array. The array length = number of hlines.
10233 // Each element in the array tells if the line is dashed.
10234 var hlineInfo = [];
10235 parser.consumeSpaces();
10236 var nxt = parser.fetch().text;
10237
10238 while (nxt === "\\hline" || nxt === "\\hdashline") {
10239 parser.consume();
10240 hlineInfo.push(nxt === "\\hdashline");
10241 parser.consumeSpaces();
10242 nxt = parser.fetch().text;
10243 }
10244
10245 return hlineInfo;
10246}
10247
10248var validateAmsEnvironmentContext = function validateAmsEnvironmentContext(context) {
10249 var settings = context.parser.settings;
10250
10251 if (!settings.displayMode) {
10252 throw new src_ParseError("{" + context.envName + "} can be used only in" + " display mode.");
10253 }
10254}; // autoTag (an argument to parseArray) can be one of three values:
10255// * undefined: Regular (not-top-level) array; no tags on each row
10256// * true: Automatic equation numbering, overridable by \tag
10257// * false: Tags allowed on each row, but no automatic numbering
10258// This function *doesn't* work with the "split" environment name.
10259
10260
10261function getAutoTag(name) {
10262 if (name.indexOf("ed") === -1) {
10263 return name.indexOf("*") === -1;
10264 } // return undefined;
10265
10266}
10267/**
10268 * Parse the body of the environment, with rows delimited by \\ and
10269 * columns delimited by &, and create a nested list in row-major order
10270 * with one group per cell. If given an optional argument style
10271 * ("text", "display", etc.), then each cell is cast into that style.
10272 */
10273
10274
10275function parseArray(parser, _ref, style) {
10276 var hskipBeforeAndAfter = _ref.hskipBeforeAndAfter,
10277 addJot = _ref.addJot,
10278 cols = _ref.cols,
10279 arraystretch = _ref.arraystretch,
10280 colSeparationType = _ref.colSeparationType,
10281 autoTag = _ref.autoTag,
10282 singleRow = _ref.singleRow,
10283 emptySingleRow = _ref.emptySingleRow,
10284 maxNumCols = _ref.maxNumCols,
10285 leqno = _ref.leqno;
10286 parser.gullet.beginGroup();
10287
10288 if (!singleRow) {
10289 // \cr is equivalent to \\ without the optional size argument (see below)
10290 // TODO: provide helpful error when \cr is used outside array environment
10291 parser.gullet.macros.set("\\cr", "\\\\\\relax");
10292 } // Get current arraystretch if it's not set by the environment
10293
10294
10295 if (!arraystretch) {
10296 var stretch = parser.gullet.expandMacroAsText("\\arraystretch");
10297
10298 if (stretch == null) {
10299 // Default \arraystretch from lttab.dtx
10300 arraystretch = 1;
10301 } else {
10302 arraystretch = parseFloat(stretch);
10303
10304 if (!arraystretch || arraystretch < 0) {
10305 throw new src_ParseError("Invalid \\arraystretch: " + stretch);
10306 }
10307 }
10308 } // Start group for first cell
10309
10310
10311 parser.gullet.beginGroup();
10312 var row = [];
10313 var body = [row];
10314 var rowGaps = [];
10315 var hLinesBeforeRow = [];
10316 var tags = autoTag != null ? [] : undefined; // amsmath uses \global\@eqnswtrue and \global\@eqnswfalse to represent
10317 // whether this row should have an equation number. Simulate this with
10318 // a \@eqnsw macro set to 1 or 0.
10319
10320 function beginRow() {
10321 if (autoTag) {
10322 parser.gullet.macros.set("\\@eqnsw", "1", true);
10323 }
10324 }
10325
10326 function endRow() {
10327 if (tags) {
10328 if (parser.gullet.macros.get("\\df@tag")) {
10329 tags.push(parser.subparse([new Token("\\df@tag")]));
10330 parser.gullet.macros.set("\\df@tag", undefined, true);
10331 } else {
10332 tags.push(Boolean(autoTag) && parser.gullet.macros.get("\\@eqnsw") === "1");
10333 }
10334 }
10335 }
10336
10337 beginRow(); // Test for \hline at the top of the array.
10338
10339 hLinesBeforeRow.push(getHLines(parser));
10340
10341 while (true) {
10342 // eslint-disable-line no-constant-condition
10343 // Parse each cell in its own group (namespace)
10344 var cell = parser.parseExpression(false, singleRow ? "\\end" : "\\\\");
10345 parser.gullet.endGroup();
10346 parser.gullet.beginGroup();
10347 cell = {
10348 type: "ordgroup",
10349 mode: parser.mode,
10350 body: cell
10351 };
10352
10353 if (style) {
10354 cell = {
10355 type: "styling",
10356 mode: parser.mode,
10357 style: style,
10358 body: [cell]
10359 };
10360 }
10361
10362 row.push(cell);
10363 var next = parser.fetch().text;
10364
10365 if (next === "&") {
10366 if (maxNumCols && row.length === maxNumCols) {
10367 if (singleRow || colSeparationType) {
10368 // {equation} or {split}
10369 throw new src_ParseError("Too many tab characters: &", parser.nextToken);
10370 } else {
10371 // {array} environment
10372 parser.settings.reportNonstrict("textEnv", "Too few columns " + "specified in the {array} column argument.");
10373 }
10374 }
10375
10376 parser.consume();
10377 } else if (next === "\\end") {
10378 endRow(); // Arrays terminate newlines with `\crcr` which consumes a `\cr` if
10379 // the last line is empty. However, AMS environments keep the
10380 // empty row if it's the only one.
10381 // NOTE: Currently, `cell` is the last item added into `row`.
10382
10383 if (row.length === 1 && cell.type === "styling" && cell.body[0].body.length === 0 && (body.length > 1 || !emptySingleRow)) {
10384 body.pop();
10385 }
10386
10387 if (hLinesBeforeRow.length < body.length + 1) {
10388 hLinesBeforeRow.push([]);
10389 }
10390
10391 break;
10392 } else if (next === "\\\\") {
10393 parser.consume();
10394 var size = void 0; // \def\Let@{\let\\\math@cr}
10395 // \def\math@cr{...\math@cr@}
10396 // \def\math@cr@{\new@ifnextchar[\math@cr@@{\math@cr@@[\z@]}}
10397 // \def\math@cr@@[#1]{...\math@cr@@@...}
10398 // \def\math@cr@@@{\cr}
10399
10400 if (parser.gullet.future().text !== " ") {
10401 size = parser.parseSizeGroup(true);
10402 }
10403
10404 rowGaps.push(size ? size.value : null);
10405 endRow(); // check for \hline(s) following the row separator
10406
10407 hLinesBeforeRow.push(getHLines(parser));
10408 row = [];
10409 body.push(row);
10410 beginRow();
10411 } else {
10412 throw new src_ParseError("Expected & or \\\\ or \\cr or \\end", parser.nextToken);
10413 }
10414 } // End cell group
10415
10416
10417 parser.gullet.endGroup(); // End array group defining \cr
10418
10419 parser.gullet.endGroup();
10420 return {
10421 type: "array",
10422 mode: parser.mode,
10423 addJot: addJot,
10424 arraystretch: arraystretch,
10425 body: body,
10426 cols: cols,
10427 rowGaps: rowGaps,
10428 hskipBeforeAndAfter: hskipBeforeAndAfter,
10429 hLinesBeforeRow: hLinesBeforeRow,
10430 colSeparationType: colSeparationType,
10431 tags: tags,
10432 leqno: leqno
10433 };
10434} // Decides on a style for cells in an array according to whether the given
10435// environment name starts with the letter 'd'.
10436
10437
10438function dCellStyle(envName) {
10439 if (envName.substr(0, 1) === "d") {
10440 return "display";
10441 } else {
10442 return "text";
10443 }
10444}
10445
10446var array_htmlBuilder = function htmlBuilder(group, options) {
10447 var r;
10448 var c;
10449 var nr = group.body.length;
10450 var hLinesBeforeRow = group.hLinesBeforeRow;
10451 var nc = 0;
10452 var body = new Array(nr);
10453 var hlines = [];
10454 var ruleThickness = Math.max( // From LaTeX \showthe\arrayrulewidth. Equals 0.04 em.
10455 options.fontMetrics().arrayRuleWidth, options.minRuleThickness // User override.
10456 ); // Horizontal spacing
10457
10458 var pt = 1 / options.fontMetrics().ptPerEm;
10459 var arraycolsep = 5 * pt; // default value, i.e. \arraycolsep in article.cls
10460
10461 if (group.colSeparationType && group.colSeparationType === "small") {
10462 // We're in a {smallmatrix}. Default column space is \thickspace,
10463 // i.e. 5/18em = 0.2778em, per amsmath.dtx for {smallmatrix}.
10464 // But that needs adjustment because LaTeX applies \scriptstyle to the
10465 // entire array, including the colspace, but this function applies
10466 // \scriptstyle only inside each element.
10467 var localMultiplier = options.havingStyle(src_Style.SCRIPT).sizeMultiplier;
10468 arraycolsep = 0.2778 * (localMultiplier / options.sizeMultiplier);
10469 } // Vertical spacing
10470
10471
10472 var baselineskip = group.colSeparationType === "CD" ? calculateSize({
10473 number: 3,
10474 unit: "ex"
10475 }, options) : 12 * pt; // see size10.clo
10476 // Default \jot from ltmath.dtx
10477 // TODO(edemaine): allow overriding \jot via \setlength (#687)
10478
10479 var jot = 3 * pt;
10480 var arrayskip = group.arraystretch * baselineskip;
10481 var arstrutHeight = 0.7 * arrayskip; // \strutbox in ltfsstrc.dtx and
10482
10483 var arstrutDepth = 0.3 * arrayskip; // \@arstrutbox in lttab.dtx
10484
10485 var totalHeight = 0; // Set a position for \hline(s) at the top of the array, if any.
10486
10487 function setHLinePos(hlinesInGap) {
10488 for (var i = 0; i < hlinesInGap.length; ++i) {
10489 if (i > 0) {
10490 totalHeight += 0.25;
10491 }
10492
10493 hlines.push({
10494 pos: totalHeight,
10495 isDashed: hlinesInGap[i]
10496 });
10497 }
10498 }
10499
10500 setHLinePos(hLinesBeforeRow[0]);
10501
10502 for (r = 0; r < group.body.length; ++r) {
10503 var inrow = group.body[r];
10504 var height = arstrutHeight; // \@array adds an \@arstrut
10505
10506 var depth = arstrutDepth; // to each tow (via the template)
10507
10508 if (nc < inrow.length) {
10509 nc = inrow.length;
10510 }
10511
10512 var outrow = new Array(inrow.length);
10513
10514 for (c = 0; c < inrow.length; ++c) {
10515 var elt = buildGroup(inrow[c], options);
10516
10517 if (depth < elt.depth) {
10518 depth = elt.depth;
10519 }
10520
10521 if (height < elt.height) {
10522 height = elt.height;
10523 }
10524
10525 outrow[c] = elt;
10526 }
10527
10528 var rowGap = group.rowGaps[r];
10529 var gap = 0;
10530
10531 if (rowGap) {
10532 gap = calculateSize(rowGap, options);
10533
10534 if (gap > 0) {
10535 // \@argarraycr
10536 gap += arstrutDepth;
10537
10538 if (depth < gap) {
10539 depth = gap; // \@xargarraycr
10540 }
10541
10542 gap = 0;
10543 }
10544 } // In AMS multiline environments such as aligned and gathered, rows
10545 // correspond to lines that have additional \jot added to the
10546 // \baselineskip via \openup.
10547
10548
10549 if (group.addJot) {
10550 depth += jot;
10551 }
10552
10553 outrow.height = height;
10554 outrow.depth = depth;
10555 totalHeight += height;
10556 outrow.pos = totalHeight;
10557 totalHeight += depth + gap; // \@yargarraycr
10558
10559 body[r] = outrow; // Set a position for \hline(s), if any.
10560
10561 setHLinePos(hLinesBeforeRow[r + 1]);
10562 }
10563
10564 var offset = totalHeight / 2 + options.fontMetrics().axisHeight;
10565 var colDescriptions = group.cols || [];
10566 var cols = [];
10567 var colSep;
10568 var colDescrNum;
10569 var tagSpans = [];
10570
10571 if (group.tags && group.tags.some(function (tag) {
10572 return tag;
10573 })) {
10574 // An environment with manual tags and/or automatic equation numbers.
10575 // Create node(s), the latter of which trigger CSS counter increment.
10576 for (r = 0; r < nr; ++r) {
10577 var rw = body[r];
10578 var shift = rw.pos - offset;
10579 var tag = group.tags[r];
10580 var tagSpan = void 0;
10581
10582 if (tag === true) {
10583 // automatic numbering
10584 tagSpan = buildCommon.makeSpan(["eqn-num"], [], options);
10585 } else if (tag === false) {
10586 // \nonumber/\notag or starred environment
10587 tagSpan = buildCommon.makeSpan([], [], options);
10588 } else {
10589 // manual \tag
10590 tagSpan = buildCommon.makeSpan([], buildExpression(tag, options, true), options);
10591 }
10592
10593 tagSpan.depth = rw.depth;
10594 tagSpan.height = rw.height;
10595 tagSpans.push({
10596 type: "elem",
10597 elem: tagSpan,
10598 shift: shift
10599 });
10600 }
10601 }
10602
10603 for (c = 0, colDescrNum = 0; // Continue while either there are more columns or more column
10604 // descriptions, so trailing separators don't get lost.
10605 c < nc || colDescrNum < colDescriptions.length; ++c, ++colDescrNum) {
10606 var colDescr = colDescriptions[colDescrNum] || {};
10607 var firstSeparator = true;
10608
10609 while (colDescr.type === "separator") {
10610 // If there is more than one separator in a row, add a space
10611 // between them.
10612 if (!firstSeparator) {
10613 colSep = buildCommon.makeSpan(["arraycolsep"], []);
10614 colSep.style.width = makeEm(options.fontMetrics().doubleRuleSep);
10615 cols.push(colSep);
10616 }
10617
10618 if (colDescr.separator === "|" || colDescr.separator === ":") {
10619 var lineType = colDescr.separator === "|" ? "solid" : "dashed";
10620 var separator = buildCommon.makeSpan(["vertical-separator"], [], options);
10621 separator.style.height = makeEm(totalHeight);
10622 separator.style.borderRightWidth = makeEm(ruleThickness);
10623 separator.style.borderRightStyle = lineType;
10624 separator.style.margin = "0 " + makeEm(-ruleThickness / 2);
10625
10626 var _shift = totalHeight - offset;
10627
10628 if (_shift) {
10629 separator.style.verticalAlign = makeEm(-_shift);
10630 }
10631
10632 cols.push(separator);
10633 } else {
10634 throw new src_ParseError("Invalid separator type: " + colDescr.separator);
10635 }
10636
10637 colDescrNum++;
10638 colDescr = colDescriptions[colDescrNum] || {};
10639 firstSeparator = false;
10640 }
10641
10642 if (c >= nc) {
10643 continue;
10644 }
10645
10646 var sepwidth = void 0;
10647
10648 if (c > 0 || group.hskipBeforeAndAfter) {
10649 sepwidth = utils.deflt(colDescr.pregap, arraycolsep);
10650
10651 if (sepwidth !== 0) {
10652 colSep = buildCommon.makeSpan(["arraycolsep"], []);
10653 colSep.style.width = makeEm(sepwidth);
10654 cols.push(colSep);
10655 }
10656 }
10657
10658 var col = [];
10659
10660 for (r = 0; r < nr; ++r) {
10661 var row = body[r];
10662 var elem = row[c];
10663
10664 if (!elem) {
10665 continue;
10666 }
10667
10668 var _shift2 = row.pos - offset;
10669
10670 elem.depth = row.depth;
10671 elem.height = row.height;
10672 col.push({
10673 type: "elem",
10674 elem: elem,
10675 shift: _shift2
10676 });
10677 }
10678
10679 col = buildCommon.makeVList({
10680 positionType: "individualShift",
10681 children: col
10682 }, options);
10683 col = buildCommon.makeSpan(["col-align-" + (colDescr.align || "c")], [col]);
10684 cols.push(col);
10685
10686 if (c < nc - 1 || group.hskipBeforeAndAfter) {
10687 sepwidth = utils.deflt(colDescr.postgap, arraycolsep);
10688
10689 if (sepwidth !== 0) {
10690 colSep = buildCommon.makeSpan(["arraycolsep"], []);
10691 colSep.style.width = makeEm(sepwidth);
10692 cols.push(colSep);
10693 }
10694 }
10695 }
10696
10697 body = buildCommon.makeSpan(["mtable"], cols); // Add \hline(s), if any.
10698
10699 if (hlines.length > 0) {
10700 var line = buildCommon.makeLineSpan("hline", options, ruleThickness);
10701 var dashes = buildCommon.makeLineSpan("hdashline", options, ruleThickness);
10702 var vListElems = [{
10703 type: "elem",
10704 elem: body,
10705 shift: 0
10706 }];
10707
10708 while (hlines.length > 0) {
10709 var hline = hlines.pop();
10710 var lineShift = hline.pos - offset;
10711
10712 if (hline.isDashed) {
10713 vListElems.push({
10714 type: "elem",
10715 elem: dashes,
10716 shift: lineShift
10717 });
10718 } else {
10719 vListElems.push({
10720 type: "elem",
10721 elem: line,
10722 shift: lineShift
10723 });
10724 }
10725 }
10726
10727 body = buildCommon.makeVList({
10728 positionType: "individualShift",
10729 children: vListElems
10730 }, options);
10731 }
10732
10733 if (tagSpans.length === 0) {
10734 return buildCommon.makeSpan(["mord"], [body], options);
10735 } else {
10736 var eqnNumCol = buildCommon.makeVList({
10737 positionType: "individualShift",
10738 children: tagSpans
10739 }, options);
10740 eqnNumCol = buildCommon.makeSpan(["tag"], [eqnNumCol], options);
10741 return buildCommon.makeFragment([body, eqnNumCol]);
10742 }
10743};
10744
10745var alignMap = {
10746 c: "center ",
10747 l: "left ",
10748 r: "right "
10749};
10750
10751var array_mathmlBuilder = function mathmlBuilder(group, options) {
10752 var tbl = [];
10753 var glue = new mathMLTree.MathNode("mtd", [], ["mtr-glue"]);
10754 var tag = new mathMLTree.MathNode("mtd", [], ["mml-eqn-num"]);
10755
10756 for (var i = 0; i < group.body.length; i++) {
10757 var rw = group.body[i];
10758 var row = [];
10759
10760 for (var j = 0; j < rw.length; j++) {
10761 row.push(new mathMLTree.MathNode("mtd", [buildMathML_buildGroup(rw[j], options)]));
10762 }
10763
10764 if (group.tags && group.tags[i]) {
10765 row.unshift(glue);
10766 row.push(glue);
10767
10768 if (group.leqno) {
10769 row.unshift(tag);
10770 } else {
10771 row.push(tag);
10772 }
10773 }
10774
10775 tbl.push(new mathMLTree.MathNode("mtr", row));
10776 }
10777
10778 var table = new mathMLTree.MathNode("mtable", tbl); // Set column alignment, row spacing, column spacing, and
10779 // array lines by setting attributes on the table element.
10780 // Set the row spacing. In MathML, we specify a gap distance.
10781 // We do not use rowGap[] because MathML automatically increases
10782 // cell height with the height/depth of the element content.
10783 // LaTeX \arraystretch multiplies the row baseline-to-baseline distance.
10784 // We simulate this by adding (arraystretch - 1)em to the gap. This
10785 // does a reasonable job of adjusting arrays containing 1 em tall content.
10786 // The 0.16 and 0.09 values are found emprically. They produce an array
10787 // similar to LaTeX and in which content does not interfere with \hines.
10788
10789 var gap = group.arraystretch === 0.5 ? 0.1 // {smallmatrix}, {subarray}
10790 : 0.16 + group.arraystretch - 1 + (group.addJot ? 0.09 : 0);
10791 table.setAttribute("rowspacing", makeEm(gap)); // MathML table lines go only between cells.
10792 // To place a line on an edge we'll use <menclose>, if necessary.
10793
10794 var menclose = "";
10795 var align = "";
10796
10797 if (group.cols && group.cols.length > 0) {
10798 // Find column alignment, column spacing, and vertical lines.
10799 var cols = group.cols;
10800 var columnLines = "";
10801 var prevTypeWasAlign = false;
10802 var iStart = 0;
10803 var iEnd = cols.length;
10804
10805 if (cols[0].type === "separator") {
10806 menclose += "top ";
10807 iStart = 1;
10808 }
10809
10810 if (cols[cols.length - 1].type === "separator") {
10811 menclose += "bottom ";
10812 iEnd -= 1;
10813 }
10814
10815 for (var _i = iStart; _i < iEnd; _i++) {
10816 if (cols[_i].type === "align") {
10817 align += alignMap[cols[_i].align];
10818
10819 if (prevTypeWasAlign) {
10820 columnLines += "none ";
10821 }
10822
10823 prevTypeWasAlign = true;
10824 } else if (cols[_i].type === "separator") {
10825 // MathML accepts only single lines between cells.
10826 // So we read only the first of consecutive separators.
10827 if (prevTypeWasAlign) {
10828 columnLines += cols[_i].separator === "|" ? "solid " : "dashed ";
10829 prevTypeWasAlign = false;
10830 }
10831 }
10832 }
10833
10834 table.setAttribute("columnalign", align.trim());
10835
10836 if (/[sd]/.test(columnLines)) {
10837 table.setAttribute("columnlines", columnLines.trim());
10838 }
10839 } // Set column spacing.
10840
10841
10842 if (group.colSeparationType === "align") {
10843 var _cols = group.cols || [];
10844
10845 var spacing = "";
10846
10847 for (var _i2 = 1; _i2 < _cols.length; _i2++) {
10848 spacing += _i2 % 2 ? "0em " : "1em ";
10849 }
10850
10851 table.setAttribute("columnspacing", spacing.trim());
10852 } else if (group.colSeparationType === "alignat" || group.colSeparationType === "gather") {
10853 table.setAttribute("columnspacing", "0em");
10854 } else if (group.colSeparationType === "small") {
10855 table.setAttribute("columnspacing", "0.2778em");
10856 } else if (group.colSeparationType === "CD") {
10857 table.setAttribute("columnspacing", "0.5em");
10858 } else {
10859 table.setAttribute("columnspacing", "1em");
10860 } // Address \hline and \hdashline
10861
10862
10863 var rowLines = "";
10864 var hlines = group.hLinesBeforeRow;
10865 menclose += hlines[0].length > 0 ? "left " : "";
10866 menclose += hlines[hlines.length - 1].length > 0 ? "right " : "";
10867
10868 for (var _i3 = 1; _i3 < hlines.length - 1; _i3++) {
10869 rowLines += hlines[_i3].length === 0 ? "none " // MathML accepts only a single line between rows. Read one element.
10870 : hlines[_i3][0] ? "dashed " : "solid ";
10871 }
10872
10873 if (/[sd]/.test(rowLines)) {
10874 table.setAttribute("rowlines", rowLines.trim());
10875 }
10876
10877 if (menclose !== "") {
10878 table = new mathMLTree.MathNode("menclose", [table]);
10879 table.setAttribute("notation", menclose.trim());
10880 }
10881
10882 if (group.arraystretch && group.arraystretch < 1) {
10883 // A small array. Wrap in scriptstyle so row gap is not too large.
10884 table = new mathMLTree.MathNode("mstyle", [table]);
10885 table.setAttribute("scriptlevel", "1");
10886 }
10887
10888 return table;
10889}; // Convenience function for align, align*, aligned, alignat, alignat*, alignedat.
10890
10891
10892var alignedHandler = function alignedHandler(context, args) {
10893 if (context.envName.indexOf("ed") === -1) {
10894 validateAmsEnvironmentContext(context);
10895 }
10896
10897 var cols = [];
10898 var separationType = context.envName.indexOf("at") > -1 ? "alignat" : "align";
10899 var isSplit = context.envName === "split";
10900 var res = parseArray(context.parser, {
10901 cols: cols,
10902 addJot: true,
10903 autoTag: isSplit ? undefined : getAutoTag(context.envName),
10904 emptySingleRow: true,
10905 colSeparationType: separationType,
10906 maxNumCols: isSplit ? 2 : undefined,
10907 leqno: context.parser.settings.leqno
10908 }, "display"); // Determining number of columns.
10909 // 1. If the first argument is given, we use it as a number of columns,
10910 // and makes sure that each row doesn't exceed that number.
10911 // 2. Otherwise, just count number of columns = maximum number
10912 // of cells in each row ("aligned" mode -- isAligned will be true).
10913 //
10914 // At the same time, prepend empty group {} at beginning of every second
10915 // cell in each row (starting with second cell) so that operators become
10916 // binary. This behavior is implemented in amsmath's \start@aligned.
10917
10918 var numMaths;
10919 var numCols = 0;
10920 var emptyGroup = {
10921 type: "ordgroup",
10922 mode: context.mode,
10923 body: []
10924 };
10925
10926 if (args[0] && args[0].type === "ordgroup") {
10927 var arg0 = "";
10928
10929 for (var i = 0; i < args[0].body.length; i++) {
10930 var textord = assertNodeType(args[0].body[i], "textord");
10931 arg0 += textord.text;
10932 }
10933
10934 numMaths = Number(arg0);
10935 numCols = numMaths * 2;
10936 }
10937
10938 var isAligned = !numCols;
10939 res.body.forEach(function (row) {
10940 for (var _i4 = 1; _i4 < row.length; _i4 += 2) {
10941 // Modify ordgroup node within styling node
10942 var styling = assertNodeType(row[_i4], "styling");
10943 var ordgroup = assertNodeType(styling.body[0], "ordgroup");
10944 ordgroup.body.unshift(emptyGroup);
10945 }
10946
10947 if (!isAligned) {
10948 // Case 1
10949 var curMaths = row.length / 2;
10950
10951 if (numMaths < curMaths) {
10952 throw new src_ParseError("Too many math in a row: " + ("expected " + numMaths + ", but got " + curMaths), row[0]);
10953 }
10954 } else if (numCols < row.length) {
10955 // Case 2
10956 numCols = row.length;
10957 }
10958 }); // Adjusting alignment.
10959 // In aligned mode, we add one \qquad between columns;
10960 // otherwise we add nothing.
10961
10962 for (var _i5 = 0; _i5 < numCols; ++_i5) {
10963 var align = "r";
10964 var pregap = 0;
10965
10966 if (_i5 % 2 === 1) {
10967 align = "l";
10968 } else if (_i5 > 0 && isAligned) {
10969 // "aligned" mode.
10970 pregap = 1; // add one \quad
10971 }
10972
10973 cols[_i5] = {
10974 type: "align",
10975 align: align,
10976 pregap: pregap,
10977 postgap: 0
10978 };
10979 }
10980
10981 res.colSeparationType = isAligned ? "align" : "alignat";
10982 return res;
10983}; // Arrays are part of LaTeX, defined in lttab.dtx so its documentation
10984// is part of the source2e.pdf file of LaTeX2e source documentation.
10985// {darray} is an {array} environment where cells are set in \displaystyle,
10986// as defined in nccmath.sty.
10987
10988
10989defineEnvironment({
10990 type: "array",
10991 names: ["array", "darray"],
10992 props: {
10993 numArgs: 1
10994 },
10995 handler: function handler(context, args) {
10996 // Since no types are specified above, the two possibilities are
10997 // - The argument is wrapped in {} or [], in which case Parser's
10998 // parseGroup() returns an "ordgroup" wrapping some symbol node.
10999 // - The argument is a bare symbol node.
11000 var symNode = checkSymbolNodeType(args[0]);
11001 var colalign = symNode ? [args[0]] : assertNodeType(args[0], "ordgroup").body;
11002 var cols = colalign.map(function (nde) {
11003 var node = assertSymbolNodeType(nde);
11004 var ca = node.text;
11005
11006 if ("lcr".indexOf(ca) !== -1) {
11007 return {
11008 type: "align",
11009 align: ca
11010 };
11011 } else if (ca === "|") {
11012 return {
11013 type: "separator",
11014 separator: "|"
11015 };
11016 } else if (ca === ":") {
11017 return {
11018 type: "separator",
11019 separator: ":"
11020 };
11021 }
11022
11023 throw new src_ParseError("Unknown column alignment: " + ca, nde);
11024 });
11025 var res = {
11026 cols: cols,
11027 hskipBeforeAndAfter: true,
11028 // \@preamble in lttab.dtx
11029 maxNumCols: cols.length
11030 };
11031 return parseArray(context.parser, res, dCellStyle(context.envName));
11032 },
11033 htmlBuilder: array_htmlBuilder,
11034 mathmlBuilder: array_mathmlBuilder
11035}); // The matrix environments of amsmath builds on the array environment
11036// of LaTeX, which is discussed above.
11037// The mathtools package adds starred versions of the same environments.
11038// These have an optional argument to choose left|center|right justification.
11039
11040defineEnvironment({
11041 type: "array",
11042 names: ["matrix", "pmatrix", "bmatrix", "Bmatrix", "vmatrix", "Vmatrix", "matrix*", "pmatrix*", "bmatrix*", "Bmatrix*", "vmatrix*", "Vmatrix*"],
11043 props: {
11044 numArgs: 0
11045 },
11046 handler: function handler(context) {
11047 var delimiters = {
11048 "matrix": null,
11049 "pmatrix": ["(", ")"],
11050 "bmatrix": ["[", "]"],
11051 "Bmatrix": ["\\{", "\\}"],
11052 "vmatrix": ["|", "|"],
11053 "Vmatrix": ["\\Vert", "\\Vert"]
11054 }[context.envName.replace("*", "")]; // \hskip -\arraycolsep in amsmath
11055
11056 var colAlign = "c";
11057 var payload = {
11058 hskipBeforeAndAfter: false,
11059 cols: [{
11060 type: "align",
11061 align: colAlign
11062 }]
11063 };
11064
11065 if (context.envName.charAt(context.envName.length - 1) === "*") {
11066 // It's one of the mathtools starred functions.
11067 // Parse the optional alignment argument.
11068 var parser = context.parser;
11069 parser.consumeSpaces();
11070
11071 if (parser.fetch().text === "[") {
11072 parser.consume();
11073 parser.consumeSpaces();
11074 colAlign = parser.fetch().text;
11075
11076 if ("lcr".indexOf(colAlign) === -1) {
11077 throw new src_ParseError("Expected l or c or r", parser.nextToken);
11078 }
11079
11080 parser.consume();
11081 parser.consumeSpaces();
11082 parser.expect("]");
11083 parser.consume();
11084 payload.cols = [{
11085 type: "align",
11086 align: colAlign
11087 }];
11088 }
11089 }
11090
11091 var res = parseArray(context.parser, payload, dCellStyle(context.envName)); // Populate cols with the correct number of column alignment specs.
11092
11093 var numCols = Math.max.apply(Math, [0].concat(res.body.map(function (row) {
11094 return row.length;
11095 })));
11096 res.cols = new Array(numCols).fill({
11097 type: "align",
11098 align: colAlign
11099 });
11100 return delimiters ? {
11101 type: "leftright",
11102 mode: context.mode,
11103 body: [res],
11104 left: delimiters[0],
11105 right: delimiters[1],
11106 rightColor: undefined // \right uninfluenced by \color in array
11107
11108 } : res;
11109 },
11110 htmlBuilder: array_htmlBuilder,
11111 mathmlBuilder: array_mathmlBuilder
11112});
11113defineEnvironment({
11114 type: "array",
11115 names: ["smallmatrix"],
11116 props: {
11117 numArgs: 0
11118 },
11119 handler: function handler(context) {
11120 var payload = {
11121 arraystretch: 0.5
11122 };
11123 var res = parseArray(context.parser, payload, "script");
11124 res.colSeparationType = "small";
11125 return res;
11126 },
11127 htmlBuilder: array_htmlBuilder,
11128 mathmlBuilder: array_mathmlBuilder
11129});
11130defineEnvironment({
11131 type: "array",
11132 names: ["subarray"],
11133 props: {
11134 numArgs: 1
11135 },
11136 handler: function handler(context, args) {
11137 // Parsing of {subarray} is similar to {array}
11138 var symNode = checkSymbolNodeType(args[0]);
11139 var colalign = symNode ? [args[0]] : assertNodeType(args[0], "ordgroup").body;
11140 var cols = colalign.map(function (nde) {
11141 var node = assertSymbolNodeType(nde);
11142 var ca = node.text; // {subarray} only recognizes "l" & "c"
11143
11144 if ("lc".indexOf(ca) !== -1) {
11145 return {
11146 type: "align",
11147 align: ca
11148 };
11149 }
11150
11151 throw new src_ParseError("Unknown column alignment: " + ca, nde);
11152 });
11153
11154 if (cols.length > 1) {
11155 throw new src_ParseError("{subarray} can contain only one column");
11156 }
11157
11158 var res = {
11159 cols: cols,
11160 hskipBeforeAndAfter: false,
11161 arraystretch: 0.5
11162 };
11163 res = parseArray(context.parser, res, "script");
11164
11165 if (res.body.length > 0 && res.body[0].length > 1) {
11166 throw new src_ParseError("{subarray} can contain only one column");
11167 }
11168
11169 return res;
11170 },
11171 htmlBuilder: array_htmlBuilder,
11172 mathmlBuilder: array_mathmlBuilder
11173}); // A cases environment (in amsmath.sty) is almost equivalent to
11174// \def\arraystretch{1.2}%
11175// \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right.
11176// {dcases} is a {cases} environment where cells are set in \displaystyle,
11177// as defined in mathtools.sty.
11178// {rcases} is another mathtools environment. It's brace is on the right side.
11179
11180defineEnvironment({
11181 type: "array",
11182 names: ["cases", "dcases", "rcases", "drcases"],
11183 props: {
11184 numArgs: 0
11185 },
11186 handler: function handler(context) {
11187 var payload = {
11188 arraystretch: 1.2,
11189 cols: [{
11190 type: "align",
11191 align: "l",
11192 pregap: 0,
11193 // TODO(kevinb) get the current style.
11194 // For now we use the metrics for TEXT style which is what we were
11195 // doing before. Before attempting to get the current style we
11196 // should look at TeX's behavior especially for \over and matrices.
11197 postgap: 1.0
11198 /* 1em quad */
11199
11200 }, {
11201 type: "align",
11202 align: "l",
11203 pregap: 0,
11204 postgap: 0
11205 }]
11206 };
11207 var res = parseArray(context.parser, payload, dCellStyle(context.envName));
11208 return {
11209 type: "leftright",
11210 mode: context.mode,
11211 body: [res],
11212 left: context.envName.indexOf("r") > -1 ? "." : "\\{",
11213 right: context.envName.indexOf("r") > -1 ? "\\}" : ".",
11214 rightColor: undefined
11215 };
11216 },
11217 htmlBuilder: array_htmlBuilder,
11218 mathmlBuilder: array_mathmlBuilder
11219}); // In the align environment, one uses ampersands, &, to specify number of
11220// columns in each row, and to locate spacing between each column.
11221// align gets automatic numbering. align* and aligned do not.
11222// The alignedat environment can be used in math mode.
11223// Note that we assume \nomallineskiplimit to be zero,
11224// so that \strut@ is the same as \strut.
11225
11226defineEnvironment({
11227 type: "array",
11228 names: ["align", "align*", "aligned", "split"],
11229 props: {
11230 numArgs: 0
11231 },
11232 handler: alignedHandler,
11233 htmlBuilder: array_htmlBuilder,
11234 mathmlBuilder: array_mathmlBuilder
11235}); // A gathered environment is like an array environment with one centered
11236// column, but where rows are considered lines so get \jot line spacing
11237// and contents are set in \displaystyle.
11238
11239defineEnvironment({
11240 type: "array",
11241 names: ["gathered", "gather", "gather*"],
11242 props: {
11243 numArgs: 0
11244 },
11245 handler: function handler(context) {
11246 if (utils.contains(["gather", "gather*"], context.envName)) {
11247 validateAmsEnvironmentContext(context);
11248 }
11249
11250 var res = {
11251 cols: [{
11252 type: "align",
11253 align: "c"
11254 }],
11255 addJot: true,
11256 colSeparationType: "gather",
11257 autoTag: getAutoTag(context.envName),
11258 emptySingleRow: true,
11259 leqno: context.parser.settings.leqno
11260 };
11261 return parseArray(context.parser, res, "display");
11262 },
11263 htmlBuilder: array_htmlBuilder,
11264 mathmlBuilder: array_mathmlBuilder
11265}); // alignat environment is like an align environment, but one must explicitly
11266// specify maximum number of columns in each row, and can adjust spacing between
11267// each columns.
11268
11269defineEnvironment({
11270 type: "array",
11271 names: ["alignat", "alignat*", "alignedat"],
11272 props: {
11273 numArgs: 1
11274 },
11275 handler: alignedHandler,
11276 htmlBuilder: array_htmlBuilder,
11277 mathmlBuilder: array_mathmlBuilder
11278});
11279defineEnvironment({
11280 type: "array",
11281 names: ["equation", "equation*"],
11282 props: {
11283 numArgs: 0
11284 },
11285 handler: function handler(context) {
11286 validateAmsEnvironmentContext(context);
11287 var res = {
11288 autoTag: getAutoTag(context.envName),
11289 emptySingleRow: true,
11290 singleRow: true,
11291 maxNumCols: 1,
11292 leqno: context.parser.settings.leqno
11293 };
11294 return parseArray(context.parser, res, "display");
11295 },
11296 htmlBuilder: array_htmlBuilder,
11297 mathmlBuilder: array_mathmlBuilder
11298});
11299defineEnvironment({
11300 type: "array",
11301 names: ["CD"],
11302 props: {
11303 numArgs: 0
11304 },
11305 handler: function handler(context) {
11306 validateAmsEnvironmentContext(context);
11307 return parseCD(context.parser);
11308 },
11309 htmlBuilder: array_htmlBuilder,
11310 mathmlBuilder: array_mathmlBuilder
11311});
11312defineMacro("\\nonumber", "\\gdef\\@eqnsw{0}");
11313defineMacro("\\notag", "\\nonumber"); // Catch \hline outside array environment
11314
11315defineFunction({
11316 type: "text",
11317 // Doesn't matter what this is.
11318 names: ["\\hline", "\\hdashline"],
11319 props: {
11320 numArgs: 0,
11321 allowedInText: true,
11322 allowedInMath: true
11323 },
11324 handler: function handler(context, args) {
11325 throw new src_ParseError(context.funcName + " valid only within array environment");
11326 }
11327});
11328;// CONCATENATED MODULE: ./src/environments.js
11329
11330var environments = _environments;
11331/* harmony default export */ var src_environments = (environments); // All environment definitions should be imported below
11332
11333
11334;// CONCATENATED MODULE: ./src/functions/environment.js
11335
11336
11337
11338 // Environment delimiters. HTML/MathML rendering is defined in the corresponding
11339// defineEnvironment definitions.
11340
11341defineFunction({
11342 type: "environment",
11343 names: ["\\begin", "\\end"],
11344 props: {
11345 numArgs: 1,
11346 argTypes: ["text"]
11347 },
11348 handler: function handler(_ref, args) {
11349 var parser = _ref.parser,
11350 funcName = _ref.funcName;
11351 var nameGroup = args[0];
11352
11353 if (nameGroup.type !== "ordgroup") {
11354 throw new src_ParseError("Invalid environment name", nameGroup);
11355 }
11356
11357 var envName = "";
11358
11359 for (var i = 0; i < nameGroup.body.length; ++i) {
11360 envName += assertNodeType(nameGroup.body[i], "textord").text;
11361 }
11362
11363 if (funcName === "\\begin") {
11364 // begin...end is similar to left...right
11365 if (!src_environments.hasOwnProperty(envName)) {
11366 throw new src_ParseError("No such environment: " + envName, nameGroup);
11367 } // Build the environment object. Arguments and other information will
11368 // be made available to the begin and end methods using properties.
11369
11370
11371 var env = src_environments[envName];
11372
11373 var _parser$parseArgument = parser.parseArguments("\\begin{" + envName + "}", env),
11374 _args = _parser$parseArgument.args,
11375 optArgs = _parser$parseArgument.optArgs;
11376
11377 var context = {
11378 mode: parser.mode,
11379 envName: envName,
11380 parser: parser
11381 };
11382 var result = env.handler(context, _args, optArgs);
11383 parser.expect("\\end", false);
11384 var endNameToken = parser.nextToken;
11385 var end = assertNodeType(parser.parseFunction(), "environment");
11386
11387 if (end.name !== envName) {
11388 throw new src_ParseError("Mismatch: \\begin{" + envName + "} matched by \\end{" + end.name + "}", endNameToken);
11389 } // $FlowFixMe, "environment" handler returns an environment ParseNode
11390
11391
11392 return result;
11393 }
11394
11395 return {
11396 type: "environment",
11397 mode: parser.mode,
11398 name: envName,
11399 nameGroup: nameGroup
11400 };
11401 }
11402});
11403;// CONCATENATED MODULE: ./src/functions/mclass.js
11404
11405
11406
11407
11408
11409
11410var mclass_makeSpan = buildCommon.makeSpan;
11411
11412function mclass_htmlBuilder(group, options) {
11413 var elements = buildExpression(group.body, options, true);
11414 return mclass_makeSpan([group.mclass], elements, options);
11415}
11416
11417function mclass_mathmlBuilder(group, options) {
11418 var node;
11419 var inner = buildMathML_buildExpression(group.body, options);
11420
11421 if (group.mclass === "minner") {
11422 node = new mathMLTree.MathNode("mpadded", inner);
11423 } else if (group.mclass === "mord") {
11424 if (group.isCharacterBox) {
11425 node = inner[0];
11426 node.type = "mi";
11427 } else {
11428 node = new mathMLTree.MathNode("mi", inner);
11429 }
11430 } else {
11431 if (group.isCharacterBox) {
11432 node = inner[0];
11433 node.type = "mo";
11434 } else {
11435 node = new mathMLTree.MathNode("mo", inner);
11436 } // Set spacing based on what is the most likely adjacent atom type.
11437 // See TeXbook p170.
11438
11439
11440 if (group.mclass === "mbin") {
11441 node.attributes.lspace = "0.22em"; // medium space
11442
11443 node.attributes.rspace = "0.22em";
11444 } else if (group.mclass === "mpunct") {
11445 node.attributes.lspace = "0em";
11446 node.attributes.rspace = "0.17em"; // thinspace
11447 } else if (group.mclass === "mopen" || group.mclass === "mclose") {
11448 node.attributes.lspace = "0em";
11449 node.attributes.rspace = "0em";
11450 } else if (group.mclass === "minner") {
11451 node.attributes.lspace = "0.0556em"; // 1 mu is the most likely option
11452
11453 node.attributes.width = "+0.1111em";
11454 } // MathML <mo> default space is 5/18 em, so <mrel> needs no action.
11455 // Ref: https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo
11456
11457 }
11458
11459 return node;
11460} // Math class commands except \mathop
11461
11462
11463defineFunction({
11464 type: "mclass",
11465 names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"],
11466 props: {
11467 numArgs: 1,
11468 primitive: true
11469 },
11470 handler: function handler(_ref, args) {
11471 var parser = _ref.parser,
11472 funcName = _ref.funcName;
11473 var body = args[0];
11474 return {
11475 type: "mclass",
11476 mode: parser.mode,
11477 mclass: "m" + funcName.substr(5),
11478 // TODO(kevinb): don't prefix with 'm'
11479 body: ordargument(body),
11480 isCharacterBox: utils.isCharacterBox(body)
11481 };
11482 },
11483 htmlBuilder: mclass_htmlBuilder,
11484 mathmlBuilder: mclass_mathmlBuilder
11485});
11486var binrelClass = function binrelClass(arg) {
11487 // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument.
11488 // (by rendering separately and with {}s before and after, and measuring
11489 // the change in spacing). We'll do roughly the same by detecting the
11490 // atom type directly.
11491 var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg;
11492
11493 if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) {
11494 return "m" + atom.family;
11495 } else {
11496 return "mord";
11497 }
11498}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord.
11499// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX.
11500
11501defineFunction({
11502 type: "mclass",
11503 names: ["\\@binrel"],
11504 props: {
11505 numArgs: 2
11506 },
11507 handler: function handler(_ref2, args) {
11508 var parser = _ref2.parser;
11509 return {
11510 type: "mclass",
11511 mode: parser.mode,
11512 mclass: binrelClass(args[0]),
11513 body: ordargument(args[1]),
11514 isCharacterBox: utils.isCharacterBox(args[1])
11515 };
11516 }
11517}); // Build a relation or stacked op by placing one symbol on top of another
11518
11519defineFunction({
11520 type: "mclass",
11521 names: ["\\stackrel", "\\overset", "\\underset"],
11522 props: {
11523 numArgs: 2
11524 },
11525 handler: function handler(_ref3, args) {
11526 var parser = _ref3.parser,
11527 funcName = _ref3.funcName;
11528 var baseArg = args[1];
11529 var shiftedArg = args[0];
11530 var mclass;
11531
11532 if (funcName !== "\\stackrel") {
11533 // LaTeX applies \binrel spacing to \overset and \underset.
11534 mclass = binrelClass(baseArg);
11535 } else {
11536 mclass = "mrel"; // for \stackrel
11537 }
11538
11539 var baseOp = {
11540 type: "op",
11541 mode: baseArg.mode,
11542 limits: true,
11543 alwaysHandleSupSub: true,
11544 parentIsSupSub: false,
11545 symbol: false,
11546 suppressBaseShift: funcName !== "\\stackrel",
11547 body: ordargument(baseArg)
11548 };
11549 var supsub = {
11550 type: "supsub",
11551 mode: shiftedArg.mode,
11552 base: baseOp,
11553 sup: funcName === "\\underset" ? null : shiftedArg,
11554 sub: funcName === "\\underset" ? shiftedArg : null
11555 };
11556 return {
11557 type: "mclass",
11558 mode: parser.mode,
11559 mclass: mclass,
11560 body: [supsub],
11561 isCharacterBox: utils.isCharacterBox(supsub)
11562 };
11563 },
11564 htmlBuilder: mclass_htmlBuilder,
11565 mathmlBuilder: mclass_mathmlBuilder
11566});
11567;// CONCATENATED MODULE: ./src/functions/font.js
11568// TODO(kevinb): implement \\sl and \\sc
11569
11570
11571
11572
11573
11574
11575var font_htmlBuilder = function htmlBuilder(group, options) {
11576 var font = group.font;
11577 var newOptions = options.withFont(font);
11578 return buildGroup(group.body, newOptions);
11579};
11580
11581var font_mathmlBuilder = function mathmlBuilder(group, options) {
11582 var font = group.font;
11583 var newOptions = options.withFont(font);
11584 return buildMathML_buildGroup(group.body, newOptions);
11585};
11586
11587var fontAliases = {
11588 "\\Bbb": "\\mathbb",
11589 "\\bold": "\\mathbf",
11590 "\\frak": "\\mathfrak",
11591 "\\bm": "\\boldsymbol"
11592};
11593defineFunction({
11594 type: "font",
11595 names: [// styles, except \boldsymbol defined below
11596 "\\mathrm", "\\mathit", "\\mathbf", "\\mathnormal", // families
11597 "\\mathbb", "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf", "\\mathtt", // aliases, except \bm defined below
11598 "\\Bbb", "\\bold", "\\frak"],
11599 props: {
11600 numArgs: 1,
11601 allowedInArgument: true
11602 },
11603 handler: function handler(_ref, args) {
11604 var parser = _ref.parser,
11605 funcName = _ref.funcName;
11606 var body = normalizeArgument(args[0]);
11607 var func = funcName;
11608
11609 if (func in fontAliases) {
11610 func = fontAliases[func];
11611 }
11612
11613 return {
11614 type: "font",
11615 mode: parser.mode,
11616 font: func.slice(1),
11617 body: body
11618 };
11619 },
11620 htmlBuilder: font_htmlBuilder,
11621 mathmlBuilder: font_mathmlBuilder
11622});
11623defineFunction({
11624 type: "mclass",
11625 names: ["\\boldsymbol", "\\bm"],
11626 props: {
11627 numArgs: 1
11628 },
11629 handler: function handler(_ref2, args) {
11630 var parser = _ref2.parser;
11631 var body = args[0];
11632 var isCharacterBox = utils.isCharacterBox(body); // amsbsy.sty's \boldsymbol uses \binrel spacing to inherit the
11633 // argument's bin|rel|ord status
11634
11635 return {
11636 type: "mclass",
11637 mode: parser.mode,
11638 mclass: binrelClass(body),
11639 body: [{
11640 type: "font",
11641 mode: parser.mode,
11642 font: "boldsymbol",
11643 body: body
11644 }],
11645 isCharacterBox: isCharacterBox
11646 };
11647 }
11648}); // Old font changing functions
11649
11650defineFunction({
11651 type: "font",
11652 names: ["\\rm", "\\sf", "\\tt", "\\bf", "\\it", "\\cal"],
11653 props: {
11654 numArgs: 0,
11655 allowedInText: true
11656 },
11657 handler: function handler(_ref3, args) {
11658 var parser = _ref3.parser,
11659 funcName = _ref3.funcName,
11660 breakOnTokenText = _ref3.breakOnTokenText;
11661 var mode = parser.mode;
11662 var body = parser.parseExpression(true, breakOnTokenText);
11663 var style = "math" + funcName.slice(1);
11664 return {
11665 type: "font",
11666 mode: mode,
11667 font: style,
11668 body: {
11669 type: "ordgroup",
11670 mode: parser.mode,
11671 body: body
11672 }
11673 };
11674 },
11675 htmlBuilder: font_htmlBuilder,
11676 mathmlBuilder: font_mathmlBuilder
11677});
11678;// CONCATENATED MODULE: ./src/functions/genfrac.js
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690var adjustStyle = function adjustStyle(size, originalStyle) {
11691 // Figure out what style this fraction should be in based on the
11692 // function used
11693 var style = originalStyle;
11694
11695 if (size === "display") {
11696 // Get display style as a default.
11697 // If incoming style is sub/sup, use style.text() to get correct size.
11698 style = style.id >= src_Style.SCRIPT.id ? style.text() : src_Style.DISPLAY;
11699 } else if (size === "text" && style.size === src_Style.DISPLAY.size) {
11700 // We're in a \tfrac but incoming style is displaystyle, so:
11701 style = src_Style.TEXT;
11702 } else if (size === "script") {
11703 style = src_Style.SCRIPT;
11704 } else if (size === "scriptscript") {
11705 style = src_Style.SCRIPTSCRIPT;
11706 }
11707
11708 return style;
11709};
11710
11711var genfrac_htmlBuilder = function htmlBuilder(group, options) {
11712 // Fractions are handled in the TeXbook on pages 444-445, rules 15(a-e).
11713 var style = adjustStyle(group.size, options.style);
11714 var nstyle = style.fracNum();
11715 var dstyle = style.fracDen();
11716 var newOptions;
11717 newOptions = options.havingStyle(nstyle);
11718 var numerm = buildGroup(group.numer, newOptions, options);
11719
11720 if (group.continued) {
11721 // \cfrac inserts a \strut into the numerator.
11722 // Get \strut dimensions from TeXbook page 353.
11723 var hStrut = 8.5 / options.fontMetrics().ptPerEm;
11724 var dStrut = 3.5 / options.fontMetrics().ptPerEm;
11725 numerm.height = numerm.height < hStrut ? hStrut : numerm.height;
11726 numerm.depth = numerm.depth < dStrut ? dStrut : numerm.depth;
11727 }
11728
11729 newOptions = options.havingStyle(dstyle);
11730 var denomm = buildGroup(group.denom, newOptions, options);
11731 var rule;
11732 var ruleWidth;
11733 var ruleSpacing;
11734
11735 if (group.hasBarLine) {
11736 if (group.barSize) {
11737 ruleWidth = calculateSize(group.barSize, options);
11738 rule = buildCommon.makeLineSpan("frac-line", options, ruleWidth);
11739 } else {
11740 rule = buildCommon.makeLineSpan("frac-line", options);
11741 }
11742
11743 ruleWidth = rule.height;
11744 ruleSpacing = rule.height;
11745 } else {
11746 rule = null;
11747 ruleWidth = 0;
11748 ruleSpacing = options.fontMetrics().defaultRuleThickness;
11749 } // Rule 15b
11750
11751
11752 var numShift;
11753 var clearance;
11754 var denomShift;
11755
11756 if (style.size === src_Style.DISPLAY.size || group.size === "display") {
11757 numShift = options.fontMetrics().num1;
11758
11759 if (ruleWidth > 0) {
11760 clearance = 3 * ruleSpacing;
11761 } else {
11762 clearance = 7 * ruleSpacing;
11763 }
11764
11765 denomShift = options.fontMetrics().denom1;
11766 } else {
11767 if (ruleWidth > 0) {
11768 numShift = options.fontMetrics().num2;
11769 clearance = ruleSpacing;
11770 } else {
11771 numShift = options.fontMetrics().num3;
11772 clearance = 3 * ruleSpacing;
11773 }
11774
11775 denomShift = options.fontMetrics().denom2;
11776 }
11777
11778 var frac;
11779
11780 if (!rule) {
11781 // Rule 15c
11782 var candidateClearance = numShift - numerm.depth - (denomm.height - denomShift);
11783
11784 if (candidateClearance < clearance) {
11785 numShift += 0.5 * (clearance - candidateClearance);
11786 denomShift += 0.5 * (clearance - candidateClearance);
11787 }
11788
11789 frac = buildCommon.makeVList({
11790 positionType: "individualShift",
11791 children: [{
11792 type: "elem",
11793 elem: denomm,
11794 shift: denomShift
11795 }, {
11796 type: "elem",
11797 elem: numerm,
11798 shift: -numShift
11799 }]
11800 }, options);
11801 } else {
11802 // Rule 15d
11803 var axisHeight = options.fontMetrics().axisHeight;
11804
11805 if (numShift - numerm.depth - (axisHeight + 0.5 * ruleWidth) < clearance) {
11806 numShift += clearance - (numShift - numerm.depth - (axisHeight + 0.5 * ruleWidth));
11807 }
11808
11809 if (axisHeight - 0.5 * ruleWidth - (denomm.height - denomShift) < clearance) {
11810 denomShift += clearance - (axisHeight - 0.5 * ruleWidth - (denomm.height - denomShift));
11811 }
11812
11813 var midShift = -(axisHeight - 0.5 * ruleWidth);
11814 frac = buildCommon.makeVList({
11815 positionType: "individualShift",
11816 children: [{
11817 type: "elem",
11818 elem: denomm,
11819 shift: denomShift
11820 }, {
11821 type: "elem",
11822 elem: rule,
11823 shift: midShift
11824 }, {
11825 type: "elem",
11826 elem: numerm,
11827 shift: -numShift
11828 }]
11829 }, options);
11830 } // Since we manually change the style sometimes (with \dfrac or \tfrac),
11831 // account for the possible size change here.
11832
11833
11834 newOptions = options.havingStyle(style);
11835 frac.height *= newOptions.sizeMultiplier / options.sizeMultiplier;
11836 frac.depth *= newOptions.sizeMultiplier / options.sizeMultiplier; // Rule 15e
11837
11838 var delimSize;
11839
11840 if (style.size === src_Style.DISPLAY.size) {
11841 delimSize = options.fontMetrics().delim1;
11842 } else if (style.size === src_Style.SCRIPTSCRIPT.size) {
11843 delimSize = options.havingStyle(src_Style.SCRIPT).fontMetrics().delim2;
11844 } else {
11845 delimSize = options.fontMetrics().delim2;
11846 }
11847
11848 var leftDelim;
11849 var rightDelim;
11850
11851 if (group.leftDelim == null) {
11852 leftDelim = makeNullDelimiter(options, ["mopen"]);
11853 } else {
11854 leftDelim = delimiter.customSizedDelim(group.leftDelim, delimSize, true, options.havingStyle(style), group.mode, ["mopen"]);
11855 }
11856
11857 if (group.continued) {
11858 rightDelim = buildCommon.makeSpan([]); // zero width for \cfrac
11859 } else if (group.rightDelim == null) {
11860 rightDelim = makeNullDelimiter(options, ["mclose"]);
11861 } else {
11862 rightDelim = delimiter.customSizedDelim(group.rightDelim, delimSize, true, options.havingStyle(style), group.mode, ["mclose"]);
11863 }
11864
11865 return buildCommon.makeSpan(["mord"].concat(newOptions.sizingClasses(options)), [leftDelim, buildCommon.makeSpan(["mfrac"], [frac]), rightDelim], options);
11866};
11867
11868var genfrac_mathmlBuilder = function mathmlBuilder(group, options) {
11869 var node = new mathMLTree.MathNode("mfrac", [buildMathML_buildGroup(group.numer, options), buildMathML_buildGroup(group.denom, options)]);
11870
11871 if (!group.hasBarLine) {
11872 node.setAttribute("linethickness", "0px");
11873 } else if (group.barSize) {
11874 var ruleWidth = calculateSize(group.barSize, options);
11875 node.setAttribute("linethickness", makeEm(ruleWidth));
11876 }
11877
11878 var style = adjustStyle(group.size, options.style);
11879
11880 if (style.size !== options.style.size) {
11881 node = new mathMLTree.MathNode("mstyle", [node]);
11882 var isDisplay = style.size === src_Style.DISPLAY.size ? "true" : "false";
11883 node.setAttribute("displaystyle", isDisplay);
11884 node.setAttribute("scriptlevel", "0");
11885 }
11886
11887 if (group.leftDelim != null || group.rightDelim != null) {
11888 var withDelims = [];
11889
11890 if (group.leftDelim != null) {
11891 var leftOp = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(group.leftDelim.replace("\\", ""))]);
11892 leftOp.setAttribute("fence", "true");
11893 withDelims.push(leftOp);
11894 }
11895
11896 withDelims.push(node);
11897
11898 if (group.rightDelim != null) {
11899 var rightOp = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode(group.rightDelim.replace("\\", ""))]);
11900 rightOp.setAttribute("fence", "true");
11901 withDelims.push(rightOp);
11902 }
11903
11904 return makeRow(withDelims);
11905 }
11906
11907 return node;
11908};
11909
11910defineFunction({
11911 type: "genfrac",
11912 names: ["\\dfrac", "\\frac", "\\tfrac", "\\dbinom", "\\binom", "\\tbinom", "\\\\atopfrac", // can’t be entered directly
11913 "\\\\bracefrac", "\\\\brackfrac" // ditto
11914 ],
11915 props: {
11916 numArgs: 2,
11917 allowedInArgument: true
11918 },
11919 handler: function handler(_ref, args) {
11920 var parser = _ref.parser,
11921 funcName = _ref.funcName;
11922 var numer = args[0];
11923 var denom = args[1];
11924 var hasBarLine;
11925 var leftDelim = null;
11926 var rightDelim = null;
11927 var size = "auto";
11928
11929 switch (funcName) {
11930 case "\\dfrac":
11931 case "\\frac":
11932 case "\\tfrac":
11933 hasBarLine = true;
11934 break;
11935
11936 case "\\\\atopfrac":
11937 hasBarLine = false;
11938 break;
11939
11940 case "\\dbinom":
11941 case "\\binom":
11942 case "\\tbinom":
11943 hasBarLine = false;
11944 leftDelim = "(";
11945 rightDelim = ")";
11946 break;
11947
11948 case "\\\\bracefrac":
11949 hasBarLine = false;
11950 leftDelim = "\\{";
11951 rightDelim = "\\}";
11952 break;
11953
11954 case "\\\\brackfrac":
11955 hasBarLine = false;
11956 leftDelim = "[";
11957 rightDelim = "]";
11958 break;
11959
11960 default:
11961 throw new Error("Unrecognized genfrac command");
11962 }
11963
11964 switch (funcName) {
11965 case "\\dfrac":
11966 case "\\dbinom":
11967 size = "display";
11968 break;
11969
11970 case "\\tfrac":
11971 case "\\tbinom":
11972 size = "text";
11973 break;
11974 }
11975
11976 return {
11977 type: "genfrac",
11978 mode: parser.mode,
11979 continued: false,
11980 numer: numer,
11981 denom: denom,
11982 hasBarLine: hasBarLine,
11983 leftDelim: leftDelim,
11984 rightDelim: rightDelim,
11985 size: size,
11986 barSize: null
11987 };
11988 },
11989 htmlBuilder: genfrac_htmlBuilder,
11990 mathmlBuilder: genfrac_mathmlBuilder
11991});
11992defineFunction({
11993 type: "genfrac",
11994 names: ["\\cfrac"],
11995 props: {
11996 numArgs: 2
11997 },
11998 handler: function handler(_ref2, args) {
11999 var parser = _ref2.parser,
12000 funcName = _ref2.funcName;
12001 var numer = args[0];
12002 var denom = args[1];
12003 return {
12004 type: "genfrac",
12005 mode: parser.mode,
12006 continued: true,
12007 numer: numer,
12008 denom: denom,
12009 hasBarLine: true,
12010 leftDelim: null,
12011 rightDelim: null,
12012 size: "display",
12013 barSize: null
12014 };
12015 }
12016}); // Infix generalized fractions -- these are not rendered directly, but replaced
12017// immediately by one of the variants above.
12018
12019defineFunction({
12020 type: "infix",
12021 names: ["\\over", "\\choose", "\\atop", "\\brace", "\\brack"],
12022 props: {
12023 numArgs: 0,
12024 infix: true
12025 },
12026 handler: function handler(_ref3) {
12027 var parser = _ref3.parser,
12028 funcName = _ref3.funcName,
12029 token = _ref3.token;
12030 var replaceWith;
12031
12032 switch (funcName) {
12033 case "\\over":
12034 replaceWith = "\\frac";
12035 break;
12036
12037 case "\\choose":
12038 replaceWith = "\\binom";
12039 break;
12040
12041 case "\\atop":
12042 replaceWith = "\\\\atopfrac";
12043 break;
12044
12045 case "\\brace":
12046 replaceWith = "\\\\bracefrac";
12047 break;
12048
12049 case "\\brack":
12050 replaceWith = "\\\\brackfrac";
12051 break;
12052
12053 default:
12054 throw new Error("Unrecognized infix genfrac command");
12055 }
12056
12057 return {
12058 type: "infix",
12059 mode: parser.mode,
12060 replaceWith: replaceWith,
12061 token: token
12062 };
12063 }
12064});
12065var stylArray = ["display", "text", "script", "scriptscript"];
12066
12067var delimFromValue = function delimFromValue(delimString) {
12068 var delim = null;
12069
12070 if (delimString.length > 0) {
12071 delim = delimString;
12072 delim = delim === "." ? null : delim;
12073 }
12074
12075 return delim;
12076};
12077
12078defineFunction({
12079 type: "genfrac",
12080 names: ["\\genfrac"],
12081 props: {
12082 numArgs: 6,
12083 allowedInArgument: true,
12084 argTypes: ["math", "math", "size", "text", "math", "math"]
12085 },
12086 handler: function handler(_ref4, args) {
12087 var parser = _ref4.parser;
12088 var numer = args[4];
12089 var denom = args[5]; // Look into the parse nodes to get the desired delimiters.
12090
12091 var leftNode = normalizeArgument(args[0]);
12092 var leftDelim = leftNode.type === "atom" && leftNode.family === "open" ? delimFromValue(leftNode.text) : null;
12093 var rightNode = normalizeArgument(args[1]);
12094 var rightDelim = rightNode.type === "atom" && rightNode.family === "close" ? delimFromValue(rightNode.text) : null;
12095 var barNode = assertNodeType(args[2], "size");
12096 var hasBarLine;
12097 var barSize = null;
12098
12099 if (barNode.isBlank) {
12100 // \genfrac acts differently than \above.
12101 // \genfrac treats an empty size group as a signal to use a
12102 // standard bar size. \above would see size = 0 and omit the bar.
12103 hasBarLine = true;
12104 } else {
12105 barSize = barNode.value;
12106 hasBarLine = barSize.number > 0;
12107 } // Find out if we want displaystyle, textstyle, etc.
12108
12109
12110 var size = "auto";
12111 var styl = args[3];
12112
12113 if (styl.type === "ordgroup") {
12114 if (styl.body.length > 0) {
12115 var textOrd = assertNodeType(styl.body[0], "textord");
12116 size = stylArray[Number(textOrd.text)];
12117 }
12118 } else {
12119 styl = assertNodeType(styl, "textord");
12120 size = stylArray[Number(styl.text)];
12121 }
12122
12123 return {
12124 type: "genfrac",
12125 mode: parser.mode,
12126 numer: numer,
12127 denom: denom,
12128 continued: false,
12129 hasBarLine: hasBarLine,
12130 barSize: barSize,
12131 leftDelim: leftDelim,
12132 rightDelim: rightDelim,
12133 size: size
12134 };
12135 },
12136 htmlBuilder: genfrac_htmlBuilder,
12137 mathmlBuilder: genfrac_mathmlBuilder
12138}); // \above is an infix fraction that also defines a fraction bar size.
12139
12140defineFunction({
12141 type: "infix",
12142 names: ["\\above"],
12143 props: {
12144 numArgs: 1,
12145 argTypes: ["size"],
12146 infix: true
12147 },
12148 handler: function handler(_ref5, args) {
12149 var parser = _ref5.parser,
12150 funcName = _ref5.funcName,
12151 token = _ref5.token;
12152 return {
12153 type: "infix",
12154 mode: parser.mode,
12155 replaceWith: "\\\\abovefrac",
12156 size: assertNodeType(args[0], "size").value,
12157 token: token
12158 };
12159 }
12160});
12161defineFunction({
12162 type: "genfrac",
12163 names: ["\\\\abovefrac"],
12164 props: {
12165 numArgs: 3,
12166 argTypes: ["math", "size", "math"]
12167 },
12168 handler: function handler(_ref6, args) {
12169 var parser = _ref6.parser,
12170 funcName = _ref6.funcName;
12171 var numer = args[0];
12172 var barSize = assert(assertNodeType(args[1], "infix").size);
12173 var denom = args[2];
12174 var hasBarLine = barSize.number > 0;
12175 return {
12176 type: "genfrac",
12177 mode: parser.mode,
12178 numer: numer,
12179 denom: denom,
12180 continued: false,
12181 hasBarLine: hasBarLine,
12182 barSize: barSize,
12183 leftDelim: null,
12184 rightDelim: null,
12185 size: "auto"
12186 };
12187 },
12188 htmlBuilder: genfrac_htmlBuilder,
12189 mathmlBuilder: genfrac_mathmlBuilder
12190});
12191;// CONCATENATED MODULE: ./src/functions/horizBrace.js
12192
12193
12194
12195
12196
12197
12198
12199
12200// NOTE: Unlike most `htmlBuilder`s, this one handles not only "horizBrace", but
12201// also "supsub" since an over/underbrace can affect super/subscripting.
12202var horizBrace_htmlBuilder = function htmlBuilder(grp, options) {
12203 var style = options.style; // Pull out the `ParseNode<"horizBrace">` if `grp` is a "supsub" node.
12204
12205 var supSubGroup;
12206 var group;
12207
12208 if (grp.type === "supsub") {
12209 // Ref: LaTeX source2e: }}}}\limits}
12210 // i.e. LaTeX treats the brace similar to an op and passes it
12211 // with \limits, so we need to assign supsub style.
12212 supSubGroup = grp.sup ? buildGroup(grp.sup, options.havingStyle(style.sup()), options) : buildGroup(grp.sub, options.havingStyle(style.sub()), options);
12213 group = assertNodeType(grp.base, "horizBrace");
12214 } else {
12215 group = assertNodeType(grp, "horizBrace");
12216 } // Build the base group
12217
12218
12219 var body = buildGroup(group.base, options.havingBaseStyle(src_Style.DISPLAY)); // Create the stretchy element
12220
12221 var braceBody = stretchy.svgSpan(group, options); // Generate the vlist, with the appropriate kerns ┏━━━━━━━━┓
12222 // This first vlist contains the content and the brace: equation
12223
12224 var vlist;
12225
12226 if (group.isOver) {
12227 vlist = buildCommon.makeVList({
12228 positionType: "firstBaseline",
12229 children: [{
12230 type: "elem",
12231 elem: body
12232 }, {
12233 type: "kern",
12234 size: 0.1
12235 }, {
12236 type: "elem",
12237 elem: braceBody
12238 }]
12239 }, options); // $FlowFixMe: Replace this with passing "svg-align" into makeVList.
12240
12241 vlist.children[0].children[0].children[1].classes.push("svg-align");
12242 } else {
12243 vlist = buildCommon.makeVList({
12244 positionType: "bottom",
12245 positionData: body.depth + 0.1 + braceBody.height,
12246 children: [{
12247 type: "elem",
12248 elem: braceBody
12249 }, {
12250 type: "kern",
12251 size: 0.1
12252 }, {
12253 type: "elem",
12254 elem: body
12255 }]
12256 }, options); // $FlowFixMe: Replace this with passing "svg-align" into makeVList.
12257
12258 vlist.children[0].children[0].children[0].classes.push("svg-align");
12259 }
12260
12261 if (supSubGroup) {
12262 // To write the supsub, wrap the first vlist in another vlist:
12263 // They can't all go in the same vlist, because the note might be
12264 // wider than the equation. We want the equation to control the
12265 // brace width.
12266 // note long note long note
12267 // ┏━━━━━━━━┓ or ┏━━━┓ not ┏━━━━━━━━━┓
12268 // equation eqn eqn
12269 var vSpan = buildCommon.makeSpan(["mord", group.isOver ? "mover" : "munder"], [vlist], options);
12270
12271 if (group.isOver) {
12272 vlist = buildCommon.makeVList({
12273 positionType: "firstBaseline",
12274 children: [{
12275 type: "elem",
12276 elem: vSpan
12277 }, {
12278 type: "kern",
12279 size: 0.2
12280 }, {
12281 type: "elem",
12282 elem: supSubGroup
12283 }]
12284 }, options);
12285 } else {
12286 vlist = buildCommon.makeVList({
12287 positionType: "bottom",
12288 positionData: vSpan.depth + 0.2 + supSubGroup.height + supSubGroup.depth,
12289 children: [{
12290 type: "elem",
12291 elem: supSubGroup
12292 }, {
12293 type: "kern",
12294 size: 0.2
12295 }, {
12296 type: "elem",
12297 elem: vSpan
12298 }]
12299 }, options);
12300 }
12301 }
12302
12303 return buildCommon.makeSpan(["mord", group.isOver ? "mover" : "munder"], [vlist], options);
12304};
12305
12306var horizBrace_mathmlBuilder = function mathmlBuilder(group, options) {
12307 var accentNode = stretchy.mathMLnode(group.label);
12308 return new mathMLTree.MathNode(group.isOver ? "mover" : "munder", [buildMathML_buildGroup(group.base, options), accentNode]);
12309}; // Horizontal stretchy braces
12310
12311
12312defineFunction({
12313 type: "horizBrace",
12314 names: ["\\overbrace", "\\underbrace"],
12315 props: {
12316 numArgs: 1
12317 },
12318 handler: function handler(_ref, args) {
12319 var parser = _ref.parser,
12320 funcName = _ref.funcName;
12321 return {
12322 type: "horizBrace",
12323 mode: parser.mode,
12324 label: funcName,
12325 isOver: /^\\over/.test(funcName),
12326 base: args[0]
12327 };
12328 },
12329 htmlBuilder: horizBrace_htmlBuilder,
12330 mathmlBuilder: horizBrace_mathmlBuilder
12331});
12332;// CONCATENATED MODULE: ./src/functions/href.js
12333
12334
12335
12336
12337
12338
12339defineFunction({
12340 type: "href",
12341 names: ["\\href"],
12342 props: {
12343 numArgs: 2,
12344 argTypes: ["url", "original"],
12345 allowedInText: true
12346 },
12347 handler: function handler(_ref, args) {
12348 var parser = _ref.parser;
12349 var body = args[1];
12350 var href = assertNodeType(args[0], "url").url;
12351
12352 if (!parser.settings.isTrusted({
12353 command: "\\href",
12354 url: href
12355 })) {
12356 return parser.formatUnsupportedCmd("\\href");
12357 }
12358
12359 return {
12360 type: "href",
12361 mode: parser.mode,
12362 href: href,
12363 body: ordargument(body)
12364 };
12365 },
12366 htmlBuilder: function htmlBuilder(group, options) {
12367 var elements = buildExpression(group.body, options, false);
12368 return buildCommon.makeAnchor(group.href, [], elements, options);
12369 },
12370 mathmlBuilder: function mathmlBuilder(group, options) {
12371 var math = buildExpressionRow(group.body, options);
12372
12373 if (!(math instanceof MathNode)) {
12374 math = new MathNode("mrow", [math]);
12375 }
12376
12377 math.setAttribute("href", group.href);
12378 return math;
12379 }
12380});
12381defineFunction({
12382 type: "href",
12383 names: ["\\url"],
12384 props: {
12385 numArgs: 1,
12386 argTypes: ["url"],
12387 allowedInText: true
12388 },
12389 handler: function handler(_ref2, args) {
12390 var parser = _ref2.parser;
12391 var href = assertNodeType(args[0], "url").url;
12392
12393 if (!parser.settings.isTrusted({
12394 command: "\\url",
12395 url: href
12396 })) {
12397 return parser.formatUnsupportedCmd("\\url");
12398 }
12399
12400 var chars = [];
12401
12402 for (var i = 0; i < href.length; i++) {
12403 var c = href[i];
12404
12405 if (c === "~") {
12406 c = "\\textasciitilde";
12407 }
12408
12409 chars.push({
12410 type: "textord",
12411 mode: "text",
12412 text: c
12413 });
12414 }
12415
12416 var body = {
12417 type: "text",
12418 mode: parser.mode,
12419 font: "\\texttt",
12420 body: chars
12421 };
12422 return {
12423 type: "href",
12424 mode: parser.mode,
12425 href: href,
12426 body: ordargument(body)
12427 };
12428 }
12429});
12430;// CONCATENATED MODULE: ./src/functions/hbox.js
12431
12432
12433
12434
12435 // \hbox is provided for compatibility with LaTeX \vcenter.
12436// In LaTeX, \vcenter can act only on a box, as in
12437// \vcenter{\hbox{$\frac{a+b}{\dfrac{c}{d}}$}}
12438// This function by itself doesn't do anything but prevent a soft line break.
12439
12440defineFunction({
12441 type: "hbox",
12442 names: ["\\hbox"],
12443 props: {
12444 numArgs: 1,
12445 argTypes: ["text"],
12446 allowedInText: true,
12447 primitive: true
12448 },
12449 handler: function handler(_ref, args) {
12450 var parser = _ref.parser;
12451 return {
12452 type: "hbox",
12453 mode: parser.mode,
12454 body: ordargument(args[0])
12455 };
12456 },
12457 htmlBuilder: function htmlBuilder(group, options) {
12458 var elements = buildExpression(group.body, options, false);
12459 return buildCommon.makeFragment(elements);
12460 },
12461 mathmlBuilder: function mathmlBuilder(group, options) {
12462 return new mathMLTree.MathNode("mrow", buildMathML_buildExpression(group.body, options));
12463 }
12464});
12465;// CONCATENATED MODULE: ./src/functions/html.js
12466
12467
12468
12469
12470
12471
12472defineFunction({
12473 type: "html",
12474 names: ["\\htmlClass", "\\htmlId", "\\htmlStyle", "\\htmlData"],
12475 props: {
12476 numArgs: 2,
12477 argTypes: ["raw", "original"],
12478 allowedInText: true
12479 },
12480 handler: function handler(_ref, args) {
12481 var parser = _ref.parser,
12482 funcName = _ref.funcName,
12483 token = _ref.token;
12484 var value = assertNodeType(args[0], "raw").string;
12485 var body = args[1];
12486
12487 if (parser.settings.strict) {
12488 parser.settings.reportNonstrict("htmlExtension", "HTML extension is disabled on strict mode");
12489 }
12490
12491 var trustContext;
12492 var attributes = {};
12493
12494 switch (funcName) {
12495 case "\\htmlClass":
12496 attributes.class = value;
12497 trustContext = {
12498 command: "\\htmlClass",
12499 class: value
12500 };
12501 break;
12502
12503 case "\\htmlId":
12504 attributes.id = value;
12505 trustContext = {
12506 command: "\\htmlId",
12507 id: value
12508 };
12509 break;
12510
12511 case "\\htmlStyle":
12512 attributes.style = value;
12513 trustContext = {
12514 command: "\\htmlStyle",
12515 style: value
12516 };
12517 break;
12518
12519 case "\\htmlData":
12520 {
12521 var data = value.split(",");
12522
12523 for (var i = 0; i < data.length; i++) {
12524 var keyVal = data[i].split("=");
12525
12526 if (keyVal.length !== 2) {
12527 throw new src_ParseError("Error parsing key-value for \\htmlData");
12528 }
12529
12530 attributes["data-" + keyVal[0].trim()] = keyVal[1].trim();
12531 }
12532
12533 trustContext = {
12534 command: "\\htmlData",
12535 attributes: attributes
12536 };
12537 break;
12538 }
12539
12540 default:
12541 throw new Error("Unrecognized html command");
12542 }
12543
12544 if (!parser.settings.isTrusted(trustContext)) {
12545 return parser.formatUnsupportedCmd(funcName);
12546 }
12547
12548 return {
12549 type: "html",
12550 mode: parser.mode,
12551 attributes: attributes,
12552 body: ordargument(body)
12553 };
12554 },
12555 htmlBuilder: function htmlBuilder(group, options) {
12556 var elements = buildExpression(group.body, options, false);
12557 var classes = ["enclosing"];
12558
12559 if (group.attributes.class) {
12560 classes.push.apply(classes, group.attributes.class.trim().split(/\s+/));
12561 }
12562
12563 var span = buildCommon.makeSpan(classes, elements, options);
12564
12565 for (var attr in group.attributes) {
12566 if (attr !== "class" && group.attributes.hasOwnProperty(attr)) {
12567 span.setAttribute(attr, group.attributes[attr]);
12568 }
12569 }
12570
12571 return span;
12572 },
12573 mathmlBuilder: function mathmlBuilder(group, options) {
12574 return buildExpressionRow(group.body, options);
12575 }
12576});
12577;// CONCATENATED MODULE: ./src/functions/htmlmathml.js
12578
12579
12580
12581
12582defineFunction({
12583 type: "htmlmathml",
12584 names: ["\\html@mathml"],
12585 props: {
12586 numArgs: 2,
12587 allowedInText: true
12588 },
12589 handler: function handler(_ref, args) {
12590 var parser = _ref.parser;
12591 return {
12592 type: "htmlmathml",
12593 mode: parser.mode,
12594 html: ordargument(args[0]),
12595 mathml: ordargument(args[1])
12596 };
12597 },
12598 htmlBuilder: function htmlBuilder(group, options) {
12599 var elements = buildExpression(group.html, options, false);
12600 return buildCommon.makeFragment(elements);
12601 },
12602 mathmlBuilder: function mathmlBuilder(group, options) {
12603 return buildExpressionRow(group.mathml, options);
12604 }
12605});
12606;// CONCATENATED MODULE: ./src/functions/includegraphics.js
12607
12608
12609
12610
12611
12612
12613
12614var sizeData = function sizeData(str) {
12615 if (/^[-+]? *(\d+(\.\d*)?|\.\d+)$/.test(str)) {
12616 // str is a number with no unit specified.
12617 // default unit is bp, per graphix package.
12618 return {
12619 number: +str,
12620 unit: "bp"
12621 };
12622 } else {
12623 var match = /([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(str);
12624
12625 if (!match) {
12626 throw new src_ParseError("Invalid size: '" + str + "' in \\includegraphics");
12627 }
12628
12629 var data = {
12630 number: +(match[1] + match[2]),
12631 // sign + magnitude, cast to number
12632 unit: match[3]
12633 };
12634
12635 if (!validUnit(data)) {
12636 throw new src_ParseError("Invalid unit: '" + data.unit + "' in \\includegraphics.");
12637 }
12638
12639 return data;
12640 }
12641};
12642
12643defineFunction({
12644 type: "includegraphics",
12645 names: ["\\includegraphics"],
12646 props: {
12647 numArgs: 1,
12648 numOptionalArgs: 1,
12649 argTypes: ["raw", "url"],
12650 allowedInText: false
12651 },
12652 handler: function handler(_ref, args, optArgs) {
12653 var parser = _ref.parser;
12654 var width = {
12655 number: 0,
12656 unit: "em"
12657 };
12658 var height = {
12659 number: 0.9,
12660 unit: "em"
12661 }; // sorta character sized.
12662
12663 var totalheight = {
12664 number: 0,
12665 unit: "em"
12666 };
12667 var alt = "";
12668
12669 if (optArgs[0]) {
12670 var attributeStr = assertNodeType(optArgs[0], "raw").string; // Parser.js does not parse key/value pairs. We get a string.
12671
12672 var attributes = attributeStr.split(",");
12673
12674 for (var i = 0; i < attributes.length; i++) {
12675 var keyVal = attributes[i].split("=");
12676
12677 if (keyVal.length === 2) {
12678 var str = keyVal[1].trim();
12679
12680 switch (keyVal[0].trim()) {
12681 case "alt":
12682 alt = str;
12683 break;
12684
12685 case "width":
12686 width = sizeData(str);
12687 break;
12688
12689 case "height":
12690 height = sizeData(str);
12691 break;
12692
12693 case "totalheight":
12694 totalheight = sizeData(str);
12695 break;
12696
12697 default:
12698 throw new src_ParseError("Invalid key: '" + keyVal[0] + "' in \\includegraphics.");
12699 }
12700 }
12701 }
12702 }
12703
12704 var src = assertNodeType(args[0], "url").url;
12705
12706 if (alt === "") {
12707 // No alt given. Use the file name. Strip away the path.
12708 alt = src;
12709 alt = alt.replace(/^.*[\\/]/, '');
12710 alt = alt.substring(0, alt.lastIndexOf('.'));
12711 }
12712
12713 if (!parser.settings.isTrusted({
12714 command: "\\includegraphics",
12715 url: src
12716 })) {
12717 return parser.formatUnsupportedCmd("\\includegraphics");
12718 }
12719
12720 return {
12721 type: "includegraphics",
12722 mode: parser.mode,
12723 alt: alt,
12724 width: width,
12725 height: height,
12726 totalheight: totalheight,
12727 src: src
12728 };
12729 },
12730 htmlBuilder: function htmlBuilder(group, options) {
12731 var height = calculateSize(group.height, options);
12732 var depth = 0;
12733
12734 if (group.totalheight.number > 0) {
12735 depth = calculateSize(group.totalheight, options) - height;
12736 }
12737
12738 var width = 0;
12739
12740 if (group.width.number > 0) {
12741 width = calculateSize(group.width, options);
12742 }
12743
12744 var style = {
12745 height: makeEm(height + depth)
12746 };
12747
12748 if (width > 0) {
12749 style.width = makeEm(width);
12750 }
12751
12752 if (depth > 0) {
12753 style.verticalAlign = makeEm(-depth);
12754 }
12755
12756 var node = new Img(group.src, group.alt, style);
12757 node.height = height;
12758 node.depth = depth;
12759 return node;
12760 },
12761 mathmlBuilder: function mathmlBuilder(group, options) {
12762 var node = new mathMLTree.MathNode("mglyph", []);
12763 node.setAttribute("alt", group.alt);
12764 var height = calculateSize(group.height, options);
12765 var depth = 0;
12766
12767 if (group.totalheight.number > 0) {
12768 depth = calculateSize(group.totalheight, options) - height;
12769 node.setAttribute("valign", makeEm(-depth));
12770 }
12771
12772 node.setAttribute("height", makeEm(height + depth));
12773
12774 if (group.width.number > 0) {
12775 var width = calculateSize(group.width, options);
12776 node.setAttribute("width", makeEm(width));
12777 }
12778
12779 node.setAttribute("src", group.src);
12780 return node;
12781 }
12782});
12783;// CONCATENATED MODULE: ./src/functions/kern.js
12784// Horizontal spacing commands
12785
12786
12787
12788
12789 // TODO: \hskip and \mskip should support plus and minus in lengths
12790
12791defineFunction({
12792 type: "kern",
12793 names: ["\\kern", "\\mkern", "\\hskip", "\\mskip"],
12794 props: {
12795 numArgs: 1,
12796 argTypes: ["size"],
12797 primitive: true,
12798 allowedInText: true
12799 },
12800 handler: function handler(_ref, args) {
12801 var parser = _ref.parser,
12802 funcName = _ref.funcName;
12803 var size = assertNodeType(args[0], "size");
12804
12805 if (parser.settings.strict) {
12806 var mathFunction = funcName[1] === 'm'; // \mkern, \mskip
12807
12808 var muUnit = size.value.unit === 'mu';
12809
12810 if (mathFunction) {
12811 if (!muUnit) {
12812 parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " supports only mu units, " + ("not " + size.value.unit + " units"));
12813 }
12814
12815 if (parser.mode !== "math") {
12816 parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " works only in math mode");
12817 }
12818 } else {
12819 // !mathFunction
12820 if (muUnit) {
12821 parser.settings.reportNonstrict("mathVsTextUnits", "LaTeX's " + funcName + " doesn't support mu units");
12822 }
12823 }
12824 }
12825
12826 return {
12827 type: "kern",
12828 mode: parser.mode,
12829 dimension: size.value
12830 };
12831 },
12832 htmlBuilder: function htmlBuilder(group, options) {
12833 return buildCommon.makeGlue(group.dimension, options);
12834 },
12835 mathmlBuilder: function mathmlBuilder(group, options) {
12836 var dimension = calculateSize(group.dimension, options);
12837 return new mathMLTree.SpaceNode(dimension);
12838 }
12839});
12840;// CONCATENATED MODULE: ./src/functions/lap.js
12841// Horizontal overlap functions
12842
12843
12844
12845
12846
12847
12848defineFunction({
12849 type: "lap",
12850 names: ["\\mathllap", "\\mathrlap", "\\mathclap"],
12851 props: {
12852 numArgs: 1,
12853 allowedInText: true
12854 },
12855 handler: function handler(_ref, args) {
12856 var parser = _ref.parser,
12857 funcName = _ref.funcName;
12858 var body = args[0];
12859 return {
12860 type: "lap",
12861 mode: parser.mode,
12862 alignment: funcName.slice(5),
12863 body: body
12864 };
12865 },
12866 htmlBuilder: function htmlBuilder(group, options) {
12867 // mathllap, mathrlap, mathclap
12868 var inner;
12869
12870 if (group.alignment === "clap") {
12871 // ref: https://www.math.lsu.edu/~aperlis/publications/mathclap/
12872 inner = buildCommon.makeSpan([], [buildGroup(group.body, options)]); // wrap, since CSS will center a .clap > .inner > span
12873
12874 inner = buildCommon.makeSpan(["inner"], [inner], options);
12875 } else {
12876 inner = buildCommon.makeSpan(["inner"], [buildGroup(group.body, options)]);
12877 }
12878
12879 var fix = buildCommon.makeSpan(["fix"], []);
12880 var node = buildCommon.makeSpan([group.alignment], [inner, fix], options); // At this point, we have correctly set horizontal alignment of the
12881 // two items involved in the lap.
12882 // Next, use a strut to set the height of the HTML bounding box.
12883 // Otherwise, a tall argument may be misplaced.
12884 // This code resolved issue #1153
12885
12886 var strut = buildCommon.makeSpan(["strut"]);
12887 strut.style.height = makeEm(node.height + node.depth);
12888
12889 if (node.depth) {
12890 strut.style.verticalAlign = makeEm(-node.depth);
12891 }
12892
12893 node.children.unshift(strut); // Next, prevent vertical misplacement when next to something tall.
12894 // This code resolves issue #1234
12895
12896 node = buildCommon.makeSpan(["thinbox"], [node], options);
12897 return buildCommon.makeSpan(["mord", "vbox"], [node], options);
12898 },
12899 mathmlBuilder: function mathmlBuilder(group, options) {
12900 // mathllap, mathrlap, mathclap
12901 var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);
12902
12903 if (group.alignment !== "rlap") {
12904 var offset = group.alignment === "llap" ? "-1" : "-0.5";
12905 node.setAttribute("lspace", offset + "width");
12906 }
12907
12908 node.setAttribute("width", "0px");
12909 return node;
12910 }
12911});
12912;// CONCATENATED MODULE: ./src/functions/math.js
12913
12914 // Switching from text mode back to math mode
12915
12916defineFunction({
12917 type: "styling",
12918 names: ["\\(", "$"],
12919 props: {
12920 numArgs: 0,
12921 allowedInText: true,
12922 allowedInMath: false
12923 },
12924 handler: function handler(_ref, args) {
12925 var funcName = _ref.funcName,
12926 parser = _ref.parser;
12927 var outerMode = parser.mode;
12928 parser.switchMode("math");
12929 var close = funcName === "\\(" ? "\\)" : "$";
12930 var body = parser.parseExpression(false, close);
12931 parser.expect(close);
12932 parser.switchMode(outerMode);
12933 return {
12934 type: "styling",
12935 mode: parser.mode,
12936 style: "text",
12937 body: body
12938 };
12939 }
12940}); // Check for extra closing math delimiters
12941
12942defineFunction({
12943 type: "text",
12944 // Doesn't matter what this is.
12945 names: ["\\)", "\\]"],
12946 props: {
12947 numArgs: 0,
12948 allowedInText: true,
12949 allowedInMath: false
12950 },
12951 handler: function handler(context, args) {
12952 throw new src_ParseError("Mismatched " + context.funcName);
12953 }
12954});
12955;// CONCATENATED MODULE: ./src/functions/mathchoice.js
12956
12957
12958
12959
12960
12961
12962var chooseMathStyle = function chooseMathStyle(group, options) {
12963 switch (options.style.size) {
12964 case src_Style.DISPLAY.size:
12965 return group.display;
12966
12967 case src_Style.TEXT.size:
12968 return group.text;
12969
12970 case src_Style.SCRIPT.size:
12971 return group.script;
12972
12973 case src_Style.SCRIPTSCRIPT.size:
12974 return group.scriptscript;
12975
12976 default:
12977 return group.text;
12978 }
12979};
12980
12981defineFunction({
12982 type: "mathchoice",
12983 names: ["\\mathchoice"],
12984 props: {
12985 numArgs: 4,
12986 primitive: true
12987 },
12988 handler: function handler(_ref, args) {
12989 var parser = _ref.parser;
12990 return {
12991 type: "mathchoice",
12992 mode: parser.mode,
12993 display: ordargument(args[0]),
12994 text: ordargument(args[1]),
12995 script: ordargument(args[2]),
12996 scriptscript: ordargument(args[3])
12997 };
12998 },
12999 htmlBuilder: function htmlBuilder(group, options) {
13000 var body = chooseMathStyle(group, options);
13001 var elements = buildExpression(body, options, false);
13002 return buildCommon.makeFragment(elements);
13003 },
13004 mathmlBuilder: function mathmlBuilder(group, options) {
13005 var body = chooseMathStyle(group, options);
13006 return buildExpressionRow(body, options);
13007 }
13008});
13009;// CONCATENATED MODULE: ./src/functions/utils/assembleSupSub.js
13010
13011
13012
13013 // For an operator with limits, assemble the base, sup, and sub into a span.
13014
13015var assembleSupSub = function assembleSupSub(base, supGroup, subGroup, options, style, slant, baseShift) {
13016 base = buildCommon.makeSpan([], [base]);
13017 var subIsSingleCharacter = subGroup && utils.isCharacterBox(subGroup);
13018 var sub;
13019 var sup; // We manually have to handle the superscripts and subscripts. This,
13020 // aside from the kern calculations, is copied from supsub.
13021
13022 if (supGroup) {
13023 var elem = buildGroup(supGroup, options.havingStyle(style.sup()), options);
13024 sup = {
13025 elem: elem,
13026 kern: Math.max(options.fontMetrics().bigOpSpacing1, options.fontMetrics().bigOpSpacing3 - elem.depth)
13027 };
13028 }
13029
13030 if (subGroup) {
13031 var _elem = buildGroup(subGroup, options.havingStyle(style.sub()), options);
13032
13033 sub = {
13034 elem: _elem,
13035 kern: Math.max(options.fontMetrics().bigOpSpacing2, options.fontMetrics().bigOpSpacing4 - _elem.height)
13036 };
13037 } // Build the final group as a vlist of the possible subscript, base,
13038 // and possible superscript.
13039
13040
13041 var finalGroup;
13042
13043 if (sup && sub) {
13044 var bottom = options.fontMetrics().bigOpSpacing5 + sub.elem.height + sub.elem.depth + sub.kern + base.depth + baseShift;
13045 finalGroup = buildCommon.makeVList({
13046 positionType: "bottom",
13047 positionData: bottom,
13048 children: [{
13049 type: "kern",
13050 size: options.fontMetrics().bigOpSpacing5
13051 }, {
13052 type: "elem",
13053 elem: sub.elem,
13054 marginLeft: makeEm(-slant)
13055 }, {
13056 type: "kern",
13057 size: sub.kern
13058 }, {
13059 type: "elem",
13060 elem: base
13061 }, {
13062 type: "kern",
13063 size: sup.kern
13064 }, {
13065 type: "elem",
13066 elem: sup.elem,
13067 marginLeft: makeEm(slant)
13068 }, {
13069 type: "kern",
13070 size: options.fontMetrics().bigOpSpacing5
13071 }]
13072 }, options);
13073 } else if (sub) {
13074 var top = base.height - baseShift; // Shift the limits by the slant of the symbol. Note
13075 // that we are supposed to shift the limits by 1/2 of the slant,
13076 // but since we are centering the limits adding a full slant of
13077 // margin will shift by 1/2 that.
13078
13079 finalGroup = buildCommon.makeVList({
13080 positionType: "top",
13081 positionData: top,
13082 children: [{
13083 type: "kern",
13084 size: options.fontMetrics().bigOpSpacing5
13085 }, {
13086 type: "elem",
13087 elem: sub.elem,
13088 marginLeft: makeEm(-slant)
13089 }, {
13090 type: "kern",
13091 size: sub.kern
13092 }, {
13093 type: "elem",
13094 elem: base
13095 }]
13096 }, options);
13097 } else if (sup) {
13098 var _bottom = base.depth + baseShift;
13099
13100 finalGroup = buildCommon.makeVList({
13101 positionType: "bottom",
13102 positionData: _bottom,
13103 children: [{
13104 type: "elem",
13105 elem: base
13106 }, {
13107 type: "kern",
13108 size: sup.kern
13109 }, {
13110 type: "elem",
13111 elem: sup.elem,
13112 marginLeft: makeEm(slant)
13113 }, {
13114 type: "kern",
13115 size: options.fontMetrics().bigOpSpacing5
13116 }]
13117 }, options);
13118 } else {
13119 // This case probably shouldn't occur (this would mean the
13120 // supsub was sending us a group with no superscript or
13121 // subscript) but be safe.
13122 return base;
13123 }
13124
13125 var parts = [finalGroup];
13126
13127 if (sub && slant !== 0 && !subIsSingleCharacter) {
13128 // A negative margin-left was applied to the lower limit.
13129 // Avoid an overlap by placing a spacer on the left on the group.
13130 var spacer = buildCommon.makeSpan(["mspace"], [], options);
13131 spacer.style.marginRight = makeEm(slant);
13132 parts.unshift(spacer);
13133 }
13134
13135 return buildCommon.makeSpan(["mop", "op-limits"], parts, options);
13136};
13137;// CONCATENATED MODULE: ./src/functions/op.js
13138// Limits, symbols
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150// Most operators have a large successor symbol, but these don't.
13151var noSuccessor = ["\\smallint"]; // NOTE: Unlike most `htmlBuilder`s, this one handles not only "op", but also
13152// "supsub" since some of them (like \int) can affect super/subscripting.
13153
13154var op_htmlBuilder = function htmlBuilder(grp, options) {
13155 // Operators are handled in the TeXbook pg. 443-444, rule 13(a).
13156 var supGroup;
13157 var subGroup;
13158 var hasLimits = false;
13159 var group;
13160
13161 if (grp.type === "supsub") {
13162 // If we have limits, supsub will pass us its group to handle. Pull
13163 // out the superscript and subscript and set the group to the op in
13164 // its base.
13165 supGroup = grp.sup;
13166 subGroup = grp.sub;
13167 group = assertNodeType(grp.base, "op");
13168 hasLimits = true;
13169 } else {
13170 group = assertNodeType(grp, "op");
13171 }
13172
13173 var style = options.style;
13174 var large = false;
13175
13176 if (style.size === src_Style.DISPLAY.size && group.symbol && !utils.contains(noSuccessor, group.name)) {
13177 // Most symbol operators get larger in displaystyle (rule 13)
13178 large = true;
13179 }
13180
13181 var base;
13182
13183 if (group.symbol) {
13184 // If this is a symbol, create the symbol.
13185 var fontName = large ? "Size2-Regular" : "Size1-Regular";
13186 var stash = "";
13187
13188 if (group.name === "\\oiint" || group.name === "\\oiiint") {
13189 // No font glyphs yet, so use a glyph w/o the oval.
13190 // TODO: When font glyphs are available, delete this code.
13191 stash = group.name.substr(1);
13192 group.name = stash === "oiint" ? "\\iint" : "\\iiint";
13193 }
13194
13195 base = buildCommon.makeSymbol(group.name, fontName, "math", options, ["mop", "op-symbol", large ? "large-op" : "small-op"]);
13196
13197 if (stash.length > 0) {
13198 // We're in \oiint or \oiiint. Overlay the oval.
13199 // TODO: When font glyphs are available, delete this code.
13200 var italic = base.italic;
13201 var oval = buildCommon.staticSvg(stash + "Size" + (large ? "2" : "1"), options);
13202 base = buildCommon.makeVList({
13203 positionType: "individualShift",
13204 children: [{
13205 type: "elem",
13206 elem: base,
13207 shift: 0
13208 }, {
13209 type: "elem",
13210 elem: oval,
13211 shift: large ? 0.08 : 0
13212 }]
13213 }, options);
13214 group.name = "\\" + stash;
13215 base.classes.unshift("mop"); // $FlowFixMe
13216
13217 base.italic = italic;
13218 }
13219 } else if (group.body) {
13220 // If this is a list, compose that list.
13221 var inner = buildExpression(group.body, options, true);
13222
13223 if (inner.length === 1 && inner[0] instanceof SymbolNode) {
13224 base = inner[0];
13225 base.classes[0] = "mop"; // replace old mclass
13226 } else {
13227 base = buildCommon.makeSpan(["mop"], inner, options);
13228 }
13229 } else {
13230 // Otherwise, this is a text operator. Build the text from the
13231 // operator's name.
13232 var output = [];
13233
13234 for (var i = 1; i < group.name.length; i++) {
13235 output.push(buildCommon.mathsym(group.name[i], group.mode, options));
13236 }
13237
13238 base = buildCommon.makeSpan(["mop"], output, options);
13239 } // If content of op is a single symbol, shift it vertically.
13240
13241
13242 var baseShift = 0;
13243 var slant = 0;
13244
13245 if ((base instanceof SymbolNode || group.name === "\\oiint" || group.name === "\\oiiint") && !group.suppressBaseShift) {
13246 // We suppress the shift of the base of \overset and \underset. Otherwise,
13247 // shift the symbol so its center lies on the axis (rule 13). It
13248 // appears that our fonts have the centers of the symbols already
13249 // almost on the axis, so these numbers are very small. Note we
13250 // don't actually apply this here, but instead it is used either in
13251 // the vlist creation or separately when there are no limits.
13252 baseShift = (base.height - base.depth) / 2 - options.fontMetrics().axisHeight; // The slant of the symbol is just its italic correction.
13253 // $FlowFixMe
13254
13255 slant = base.italic;
13256 }
13257
13258 if (hasLimits) {
13259 return assembleSupSub(base, supGroup, subGroup, options, style, slant, baseShift);
13260 } else {
13261 if (baseShift) {
13262 base.style.position = "relative";
13263 base.style.top = makeEm(baseShift);
13264 }
13265
13266 return base;
13267 }
13268};
13269
13270var op_mathmlBuilder = function mathmlBuilder(group, options) {
13271 var node;
13272
13273 if (group.symbol) {
13274 // This is a symbol. Just add the symbol.
13275 node = new MathNode("mo", [makeText(group.name, group.mode)]);
13276
13277 if (utils.contains(noSuccessor, group.name)) {
13278 node.setAttribute("largeop", "false");
13279 }
13280 } else if (group.body) {
13281 // This is an operator with children. Add them.
13282 node = new MathNode("mo", buildMathML_buildExpression(group.body, options));
13283 } else {
13284 // This is a text operator. Add all of the characters from the
13285 // operator's name.
13286 node = new MathNode("mi", [new TextNode(group.name.slice(1))]); // Append an <mo>⁡</mo>.
13287 // ref: https://www.w3.org/TR/REC-MathML/chap3_2.html#sec3.2.4
13288
13289 var operator = new MathNode("mo", [makeText("\u2061", "text")]);
13290
13291 if (group.parentIsSupSub) {
13292 node = new MathNode("mrow", [node, operator]);
13293 } else {
13294 node = newDocumentFragment([node, operator]);
13295 }
13296 }
13297
13298 return node;
13299};
13300
13301var singleCharBigOps = {
13302 "\u220F": "\\prod",
13303 "\u2210": "\\coprod",
13304 "\u2211": "\\sum",
13305 "\u22C0": "\\bigwedge",
13306 "\u22C1": "\\bigvee",
13307 "\u22C2": "\\bigcap",
13308 "\u22C3": "\\bigcup",
13309 "\u2A00": "\\bigodot",
13310 "\u2A01": "\\bigoplus",
13311 "\u2A02": "\\bigotimes",
13312 "\u2A04": "\\biguplus",
13313 "\u2A06": "\\bigsqcup"
13314};
13315defineFunction({
13316 type: "op",
13317 names: ["\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap", "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes", "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint", "\u220F", "\u2210", "\u2211", "\u22C0", "\u22C1", "\u22C2", "\u22C3", "\u2A00", "\u2A01", "\u2A02", "\u2A04", "\u2A06"],
13318 props: {
13319 numArgs: 0
13320 },
13321 handler: function handler(_ref, args) {
13322 var parser = _ref.parser,
13323 funcName = _ref.funcName;
13324 var fName = funcName;
13325
13326 if (fName.length === 1) {
13327 fName = singleCharBigOps[fName];
13328 }
13329
13330 return {
13331 type: "op",
13332 mode: parser.mode,
13333 limits: true,
13334 parentIsSupSub: false,
13335 symbol: true,
13336 name: fName
13337 };
13338 },
13339 htmlBuilder: op_htmlBuilder,
13340 mathmlBuilder: op_mathmlBuilder
13341}); // Note: calling defineFunction with a type that's already been defined only
13342// works because the same htmlBuilder and mathmlBuilder are being used.
13343
13344defineFunction({
13345 type: "op",
13346 names: ["\\mathop"],
13347 props: {
13348 numArgs: 1,
13349 primitive: true
13350 },
13351 handler: function handler(_ref2, args) {
13352 var parser = _ref2.parser;
13353 var body = args[0];
13354 return {
13355 type: "op",
13356 mode: parser.mode,
13357 limits: false,
13358 parentIsSupSub: false,
13359 symbol: false,
13360 body: ordargument(body)
13361 };
13362 },
13363 htmlBuilder: op_htmlBuilder,
13364 mathmlBuilder: op_mathmlBuilder
13365}); // There are 2 flags for operators; whether they produce limits in
13366// displaystyle, and whether they are symbols and should grow in
13367// displaystyle. These four groups cover the four possible choices.
13368
13369var singleCharIntegrals = {
13370 "\u222B": "\\int",
13371 "\u222C": "\\iint",
13372 "\u222D": "\\iiint",
13373 "\u222E": "\\oint",
13374 "\u222F": "\\oiint",
13375 "\u2230": "\\oiiint"
13376}; // No limits, not symbols
13377
13378defineFunction({
13379 type: "op",
13380 names: ["\\arcsin", "\\arccos", "\\arctan", "\\arctg", "\\arcctg", "\\arg", "\\ch", "\\cos", "\\cosec", "\\cosh", "\\cot", "\\cotg", "\\coth", "\\csc", "\\ctg", "\\cth", "\\deg", "\\dim", "\\exp", "\\hom", "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh", "\\sh", "\\tan", "\\tanh", "\\tg", "\\th"],
13381 props: {
13382 numArgs: 0
13383 },
13384 handler: function handler(_ref3) {
13385 var parser = _ref3.parser,
13386 funcName = _ref3.funcName;
13387 return {
13388 type: "op",
13389 mode: parser.mode,
13390 limits: false,
13391 parentIsSupSub: false,
13392 symbol: false,
13393 name: funcName
13394 };
13395 },
13396 htmlBuilder: op_htmlBuilder,
13397 mathmlBuilder: op_mathmlBuilder
13398}); // Limits, not symbols
13399
13400defineFunction({
13401 type: "op",
13402 names: ["\\det", "\\gcd", "\\inf", "\\lim", "\\max", "\\min", "\\Pr", "\\sup"],
13403 props: {
13404 numArgs: 0
13405 },
13406 handler: function handler(_ref4) {
13407 var parser = _ref4.parser,
13408 funcName = _ref4.funcName;
13409 return {
13410 type: "op",
13411 mode: parser.mode,
13412 limits: true,
13413 parentIsSupSub: false,
13414 symbol: false,
13415 name: funcName
13416 };
13417 },
13418 htmlBuilder: op_htmlBuilder,
13419 mathmlBuilder: op_mathmlBuilder
13420}); // No limits, symbols
13421
13422defineFunction({
13423 type: "op",
13424 names: ["\\int", "\\iint", "\\iiint", "\\oint", "\\oiint", "\\oiiint", "\u222B", "\u222C", "\u222D", "\u222E", "\u222F", "\u2230"],
13425 props: {
13426 numArgs: 0
13427 },
13428 handler: function handler(_ref5) {
13429 var parser = _ref5.parser,
13430 funcName = _ref5.funcName;
13431 var fName = funcName;
13432
13433 if (fName.length === 1) {
13434 fName = singleCharIntegrals[fName];
13435 }
13436
13437 return {
13438 type: "op",
13439 mode: parser.mode,
13440 limits: false,
13441 parentIsSupSub: false,
13442 symbol: true,
13443 name: fName
13444 };
13445 },
13446 htmlBuilder: op_htmlBuilder,
13447 mathmlBuilder: op_mathmlBuilder
13448});
13449;// CONCATENATED MODULE: ./src/functions/operatorname.js
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459// NOTE: Unlike most `htmlBuilder`s, this one handles not only
13460// "operatorname", but also "supsub" since \operatorname* can
13461// affect super/subscripting.
13462var operatorname_htmlBuilder = function htmlBuilder(grp, options) {
13463 // Operators are handled in the TeXbook pg. 443-444, rule 13(a).
13464 var supGroup;
13465 var subGroup;
13466 var hasLimits = false;
13467 var group;
13468
13469 if (grp.type === "supsub") {
13470 // If we have limits, supsub will pass us its group to handle. Pull
13471 // out the superscript and subscript and set the group to the op in
13472 // its base.
13473 supGroup = grp.sup;
13474 subGroup = grp.sub;
13475 group = assertNodeType(grp.base, "operatorname");
13476 hasLimits = true;
13477 } else {
13478 group = assertNodeType(grp, "operatorname");
13479 }
13480
13481 var base;
13482
13483 if (group.body.length > 0) {
13484 var body = group.body.map(function (child) {
13485 // $FlowFixMe: Check if the node has a string `text` property.
13486 var childText = child.text;
13487
13488 if (typeof childText === "string") {
13489 return {
13490 type: "textord",
13491 mode: child.mode,
13492 text: childText
13493 };
13494 } else {
13495 return child;
13496 }
13497 }); // Consolidate function names into symbol characters.
13498
13499 var expression = buildExpression(body, options.withFont("mathrm"), true);
13500
13501 for (var i = 0; i < expression.length; i++) {
13502 var child = expression[i];
13503
13504 if (child instanceof SymbolNode) {
13505 // Per amsopn package,
13506 // change minus to hyphen and \ast to asterisk
13507 child.text = child.text.replace(/\u2212/, "-").replace(/\u2217/, "*");
13508 }
13509 }
13510
13511 base = buildCommon.makeSpan(["mop"], expression, options);
13512 } else {
13513 base = buildCommon.makeSpan(["mop"], [], options);
13514 }
13515
13516 if (hasLimits) {
13517 return assembleSupSub(base, supGroup, subGroup, options, options.style, 0, 0);
13518 } else {
13519 return base;
13520 }
13521};
13522
13523var operatorname_mathmlBuilder = function mathmlBuilder(group, options) {
13524 // The steps taken here are similar to the html version.
13525 var expression = buildMathML_buildExpression(group.body, options.withFont("mathrm")); // Is expression a string or has it something like a fraction?
13526
13527 var isAllString = true; // default
13528
13529 for (var i = 0; i < expression.length; i++) {
13530 var node = expression[i];
13531
13532 if (node instanceof mathMLTree.SpaceNode) {// Do nothing
13533 } else if (node instanceof mathMLTree.MathNode) {
13534 switch (node.type) {
13535 case "mi":
13536 case "mn":
13537 case "ms":
13538 case "mspace":
13539 case "mtext":
13540 break;
13541 // Do nothing yet.
13542
13543 case "mo":
13544 {
13545 var child = node.children[0];
13546
13547 if (node.children.length === 1 && child instanceof mathMLTree.TextNode) {
13548 child.text = child.text.replace(/\u2212/, "-").replace(/\u2217/, "*");
13549 } else {
13550 isAllString = false;
13551 }
13552
13553 break;
13554 }
13555
13556 default:
13557 isAllString = false;
13558 }
13559 } else {
13560 isAllString = false;
13561 }
13562 }
13563
13564 if (isAllString) {
13565 // Write a single TextNode instead of multiple nested tags.
13566 var word = expression.map(function (node) {
13567 return node.toText();
13568 }).join("");
13569 expression = [new mathMLTree.TextNode(word)];
13570 }
13571
13572 var identifier = new mathMLTree.MathNode("mi", expression);
13573 identifier.setAttribute("mathvariant", "normal"); // \u2061 is the same as ⁡
13574 // ref: https://www.w3schools.com/charsets/ref_html_entities_a.asp
13575
13576 var operator = new mathMLTree.MathNode("mo", [makeText("\u2061", "text")]);
13577
13578 if (group.parentIsSupSub) {
13579 return new mathMLTree.MathNode("mrow", [identifier, operator]);
13580 } else {
13581 return mathMLTree.newDocumentFragment([identifier, operator]);
13582 }
13583}; // \operatorname
13584// amsopn.dtx: \mathop{#1\kern\z@\operator@font#3}\newmcodes@
13585
13586
13587defineFunction({
13588 type: "operatorname",
13589 names: ["\\operatorname@", "\\operatornamewithlimits"],
13590 props: {
13591 numArgs: 1
13592 },
13593 handler: function handler(_ref, args) {
13594 var parser = _ref.parser,
13595 funcName = _ref.funcName;
13596 var body = args[0];
13597 return {
13598 type: "operatorname",
13599 mode: parser.mode,
13600 body: ordargument(body),
13601 alwaysHandleSupSub: funcName === "\\operatornamewithlimits",
13602 limits: false,
13603 parentIsSupSub: false
13604 };
13605 },
13606 htmlBuilder: operatorname_htmlBuilder,
13607 mathmlBuilder: operatorname_mathmlBuilder
13608});
13609defineMacro("\\operatorname", "\\@ifstar\\operatornamewithlimits\\operatorname@");
13610;// CONCATENATED MODULE: ./src/functions/ordgroup.js
13611
13612
13613
13614
13615defineFunctionBuilders({
13616 type: "ordgroup",
13617 htmlBuilder: function htmlBuilder(group, options) {
13618 if (group.semisimple) {
13619 return buildCommon.makeFragment(buildExpression(group.body, options, false));
13620 }
13621
13622 return buildCommon.makeSpan(["mord"], buildExpression(group.body, options, true), options);
13623 },
13624 mathmlBuilder: function mathmlBuilder(group, options) {
13625 return buildExpressionRow(group.body, options, true);
13626 }
13627});
13628;// CONCATENATED MODULE: ./src/functions/overline.js
13629
13630
13631
13632
13633
13634defineFunction({
13635 type: "overline",
13636 names: ["\\overline"],
13637 props: {
13638 numArgs: 1
13639 },
13640 handler: function handler(_ref, args) {
13641 var parser = _ref.parser;
13642 var body = args[0];
13643 return {
13644 type: "overline",
13645 mode: parser.mode,
13646 body: body
13647 };
13648 },
13649 htmlBuilder: function htmlBuilder(group, options) {
13650 // Overlines are handled in the TeXbook pg 443, Rule 9.
13651 // Build the inner group in the cramped style.
13652 var innerGroup = buildGroup(group.body, options.havingCrampedStyle()); // Create the line above the body
13653
13654 var line = buildCommon.makeLineSpan("overline-line", options); // Generate the vlist, with the appropriate kerns
13655
13656 var defaultRuleThickness = options.fontMetrics().defaultRuleThickness;
13657 var vlist = buildCommon.makeVList({
13658 positionType: "firstBaseline",
13659 children: [{
13660 type: "elem",
13661 elem: innerGroup
13662 }, {
13663 type: "kern",
13664 size: 3 * defaultRuleThickness
13665 }, {
13666 type: "elem",
13667 elem: line
13668 }, {
13669 type: "kern",
13670 size: defaultRuleThickness
13671 }]
13672 }, options);
13673 return buildCommon.makeSpan(["mord", "overline"], [vlist], options);
13674 },
13675 mathmlBuilder: function mathmlBuilder(group, options) {
13676 var operator = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode("\u203E")]);
13677 operator.setAttribute("stretchy", "true");
13678 var node = new mathMLTree.MathNode("mover", [buildMathML_buildGroup(group.body, options), operator]);
13679 node.setAttribute("accent", "true");
13680 return node;
13681 }
13682});
13683;// CONCATENATED MODULE: ./src/functions/phantom.js
13684
13685
13686
13687
13688
13689defineFunction({
13690 type: "phantom",
13691 names: ["\\phantom"],
13692 props: {
13693 numArgs: 1,
13694 allowedInText: true
13695 },
13696 handler: function handler(_ref, args) {
13697 var parser = _ref.parser;
13698 var body = args[0];
13699 return {
13700 type: "phantom",
13701 mode: parser.mode,
13702 body: ordargument(body)
13703 };
13704 },
13705 htmlBuilder: function htmlBuilder(group, options) {
13706 var elements = buildExpression(group.body, options.withPhantom(), false); // \phantom isn't supposed to affect the elements it contains.
13707 // See "color" for more details.
13708
13709 return buildCommon.makeFragment(elements);
13710 },
13711 mathmlBuilder: function mathmlBuilder(group, options) {
13712 var inner = buildMathML_buildExpression(group.body, options);
13713 return new mathMLTree.MathNode("mphantom", inner);
13714 }
13715});
13716defineFunction({
13717 type: "hphantom",
13718 names: ["\\hphantom"],
13719 props: {
13720 numArgs: 1,
13721 allowedInText: true
13722 },
13723 handler: function handler(_ref2, args) {
13724 var parser = _ref2.parser;
13725 var body = args[0];
13726 return {
13727 type: "hphantom",
13728 mode: parser.mode,
13729 body: body
13730 };
13731 },
13732 htmlBuilder: function htmlBuilder(group, options) {
13733 var node = buildCommon.makeSpan([], [buildGroup(group.body, options.withPhantom())]);
13734 node.height = 0;
13735 node.depth = 0;
13736
13737 if (node.children) {
13738 for (var i = 0; i < node.children.length; i++) {
13739 node.children[i].height = 0;
13740 node.children[i].depth = 0;
13741 }
13742 } // See smash for comment re: use of makeVList
13743
13744
13745 node = buildCommon.makeVList({
13746 positionType: "firstBaseline",
13747 children: [{
13748 type: "elem",
13749 elem: node
13750 }]
13751 }, options); // For spacing, TeX treats \smash as a math group (same spacing as ord).
13752
13753 return buildCommon.makeSpan(["mord"], [node], options);
13754 },
13755 mathmlBuilder: function mathmlBuilder(group, options) {
13756 var inner = buildMathML_buildExpression(ordargument(group.body), options);
13757 var phantom = new mathMLTree.MathNode("mphantom", inner);
13758 var node = new mathMLTree.MathNode("mpadded", [phantom]);
13759 node.setAttribute("height", "0px");
13760 node.setAttribute("depth", "0px");
13761 return node;
13762 }
13763});
13764defineFunction({
13765 type: "vphantom",
13766 names: ["\\vphantom"],
13767 props: {
13768 numArgs: 1,
13769 allowedInText: true
13770 },
13771 handler: function handler(_ref3, args) {
13772 var parser = _ref3.parser;
13773 var body = args[0];
13774 return {
13775 type: "vphantom",
13776 mode: parser.mode,
13777 body: body
13778 };
13779 },
13780 htmlBuilder: function htmlBuilder(group, options) {
13781 var inner = buildCommon.makeSpan(["inner"], [buildGroup(group.body, options.withPhantom())]);
13782 var fix = buildCommon.makeSpan(["fix"], []);
13783 return buildCommon.makeSpan(["mord", "rlap"], [inner, fix], options);
13784 },
13785 mathmlBuilder: function mathmlBuilder(group, options) {
13786 var inner = buildMathML_buildExpression(ordargument(group.body), options);
13787 var phantom = new mathMLTree.MathNode("mphantom", inner);
13788 var node = new mathMLTree.MathNode("mpadded", [phantom]);
13789 node.setAttribute("width", "0px");
13790 return node;
13791 }
13792});
13793;// CONCATENATED MODULE: ./src/functions/raisebox.js
13794
13795
13796
13797
13798
13799
13800 // Box manipulation
13801
13802defineFunction({
13803 type: "raisebox",
13804 names: ["\\raisebox"],
13805 props: {
13806 numArgs: 2,
13807 argTypes: ["size", "hbox"],
13808 allowedInText: true
13809 },
13810 handler: function handler(_ref, args) {
13811 var parser = _ref.parser;
13812 var amount = assertNodeType(args[0], "size").value;
13813 var body = args[1];
13814 return {
13815 type: "raisebox",
13816 mode: parser.mode,
13817 dy: amount,
13818 body: body
13819 };
13820 },
13821 htmlBuilder: function htmlBuilder(group, options) {
13822 var body = buildGroup(group.body, options);
13823 var dy = calculateSize(group.dy, options);
13824 return buildCommon.makeVList({
13825 positionType: "shift",
13826 positionData: -dy,
13827 children: [{
13828 type: "elem",
13829 elem: body
13830 }]
13831 }, options);
13832 },
13833 mathmlBuilder: function mathmlBuilder(group, options) {
13834 var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);
13835 var dy = group.dy.number + group.dy.unit;
13836 node.setAttribute("voffset", dy);
13837 return node;
13838 }
13839});
13840;// CONCATENATED MODULE: ./src/functions/relax.js
13841
13842defineFunction({
13843 type: "internal",
13844 names: ["\\relax"],
13845 props: {
13846 numArgs: 0,
13847 allowedInText: true
13848 },
13849 handler: function handler(_ref) {
13850 var parser = _ref.parser;
13851 return {
13852 type: "internal",
13853 mode: parser.mode
13854 };
13855 }
13856});
13857;// CONCATENATED MODULE: ./src/functions/rule.js
13858
13859
13860
13861
13862
13863defineFunction({
13864 type: "rule",
13865 names: ["\\rule"],
13866 props: {
13867 numArgs: 2,
13868 numOptionalArgs: 1,
13869 argTypes: ["size", "size", "size"]
13870 },
13871 handler: function handler(_ref, args, optArgs) {
13872 var parser = _ref.parser;
13873 var shift = optArgs[0];
13874 var width = assertNodeType(args[0], "size");
13875 var height = assertNodeType(args[1], "size");
13876 return {
13877 type: "rule",
13878 mode: parser.mode,
13879 shift: shift && assertNodeType(shift, "size").value,
13880 width: width.value,
13881 height: height.value
13882 };
13883 },
13884 htmlBuilder: function htmlBuilder(group, options) {
13885 // Make an empty span for the rule
13886 var rule = buildCommon.makeSpan(["mord", "rule"], [], options); // Calculate the shift, width, and height of the rule, and account for units
13887
13888 var width = calculateSize(group.width, options);
13889 var height = calculateSize(group.height, options);
13890 var shift = group.shift ? calculateSize(group.shift, options) : 0; // Style the rule to the right size
13891
13892 rule.style.borderRightWidth = makeEm(width);
13893 rule.style.borderTopWidth = makeEm(height);
13894 rule.style.bottom = makeEm(shift); // Record the height and width
13895
13896 rule.width = width;
13897 rule.height = height + shift;
13898 rule.depth = -shift; // Font size is the number large enough that the browser will
13899 // reserve at least `absHeight` space above the baseline.
13900 // The 1.125 factor was empirically determined
13901
13902 rule.maxFontSize = height * 1.125 * options.sizeMultiplier;
13903 return rule;
13904 },
13905 mathmlBuilder: function mathmlBuilder(group, options) {
13906 var width = calculateSize(group.width, options);
13907 var height = calculateSize(group.height, options);
13908 var shift = group.shift ? calculateSize(group.shift, options) : 0;
13909 var color = options.color && options.getColor() || "black";
13910 var rule = new mathMLTree.MathNode("mspace");
13911 rule.setAttribute("mathbackground", color);
13912 rule.setAttribute("width", makeEm(width));
13913 rule.setAttribute("height", makeEm(height));
13914 var wrapper = new mathMLTree.MathNode("mpadded", [rule]);
13915
13916 if (shift >= 0) {
13917 wrapper.setAttribute("height", makeEm(shift));
13918 } else {
13919 wrapper.setAttribute("height", makeEm(shift));
13920 wrapper.setAttribute("depth", makeEm(-shift));
13921 }
13922
13923 wrapper.setAttribute("voffset", makeEm(shift));
13924 return wrapper;
13925 }
13926});
13927;// CONCATENATED MODULE: ./src/functions/sizing.js
13928
13929
13930
13931
13932
13933
13934function sizingGroup(value, options, baseOptions) {
13935 var inner = buildExpression(value, options, false);
13936 var multiplier = options.sizeMultiplier / baseOptions.sizeMultiplier; // Add size-resetting classes to the inner list and set maxFontSize
13937 // manually. Handle nested size changes.
13938
13939 for (var i = 0; i < inner.length; i++) {
13940 var pos = inner[i].classes.indexOf("sizing");
13941
13942 if (pos < 0) {
13943 Array.prototype.push.apply(inner[i].classes, options.sizingClasses(baseOptions));
13944 } else if (inner[i].classes[pos + 1] === "reset-size" + options.size) {
13945 // This is a nested size change: e.g., inner[i] is the "b" in
13946 // `\Huge a \small b`. Override the old size (the `reset-` class)
13947 // but not the new size.
13948 inner[i].classes[pos + 1] = "reset-size" + baseOptions.size;
13949 }
13950
13951 inner[i].height *= multiplier;
13952 inner[i].depth *= multiplier;
13953 }
13954
13955 return buildCommon.makeFragment(inner);
13956}
13957var sizeFuncs = ["\\tiny", "\\sixptsize", "\\scriptsize", "\\footnotesize", "\\small", "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge"];
13958var sizing_htmlBuilder = function htmlBuilder(group, options) {
13959 // Handle sizing operators like \Huge. Real TeX doesn't actually allow
13960 // these functions inside of math expressions, so we do some special
13961 // handling.
13962 var newOptions = options.havingSize(group.size);
13963 return sizingGroup(group.body, newOptions, options);
13964};
13965defineFunction({
13966 type: "sizing",
13967 names: sizeFuncs,
13968 props: {
13969 numArgs: 0,
13970 allowedInText: true
13971 },
13972 handler: function handler(_ref, args) {
13973 var breakOnTokenText = _ref.breakOnTokenText,
13974 funcName = _ref.funcName,
13975 parser = _ref.parser;
13976 var body = parser.parseExpression(false, breakOnTokenText);
13977 return {
13978 type: "sizing",
13979 mode: parser.mode,
13980 // Figure out what size to use based on the list of functions above
13981 size: sizeFuncs.indexOf(funcName) + 1,
13982 body: body
13983 };
13984 },
13985 htmlBuilder: sizing_htmlBuilder,
13986 mathmlBuilder: function mathmlBuilder(group, options) {
13987 var newOptions = options.havingSize(group.size);
13988 var inner = buildMathML_buildExpression(group.body, newOptions);
13989 var node = new mathMLTree.MathNode("mstyle", inner); // TODO(emily): This doesn't produce the correct size for nested size
13990 // changes, because we don't keep state of what style we're currently
13991 // in, so we can't reset the size to normal before changing it. Now
13992 // that we're passing an options parameter we should be able to fix
13993 // this.
13994
13995 node.setAttribute("mathsize", makeEm(newOptions.sizeMultiplier));
13996 return node;
13997 }
13998});
13999;// CONCATENATED MODULE: ./src/functions/smash.js
14000// smash, with optional [tb], as in AMS
14001
14002
14003
14004
14005
14006
14007defineFunction({
14008 type: "smash",
14009 names: ["\\smash"],
14010 props: {
14011 numArgs: 1,
14012 numOptionalArgs: 1,
14013 allowedInText: true
14014 },
14015 handler: function handler(_ref, args, optArgs) {
14016 var parser = _ref.parser;
14017 var smashHeight = false;
14018 var smashDepth = false;
14019 var tbArg = optArgs[0] && assertNodeType(optArgs[0], "ordgroup");
14020
14021 if (tbArg) {
14022 // Optional [tb] argument is engaged.
14023 // ref: amsmath: \renewcommand{\smash}[1][tb]{%
14024 // def\mb@t{\ht}\def\mb@b{\dp}\def\mb@tb{\ht\z@\z@\dp}%
14025 var letter = "";
14026
14027 for (var i = 0; i < tbArg.body.length; ++i) {
14028 var node = tbArg.body[i]; // $FlowFixMe: Not every node type has a `text` property.
14029
14030 letter = node.text;
14031
14032 if (letter === "t") {
14033 smashHeight = true;
14034 } else if (letter === "b") {
14035 smashDepth = true;
14036 } else {
14037 smashHeight = false;
14038 smashDepth = false;
14039 break;
14040 }
14041 }
14042 } else {
14043 smashHeight = true;
14044 smashDepth = true;
14045 }
14046
14047 var body = args[0];
14048 return {
14049 type: "smash",
14050 mode: parser.mode,
14051 body: body,
14052 smashHeight: smashHeight,
14053 smashDepth: smashDepth
14054 };
14055 },
14056 htmlBuilder: function htmlBuilder(group, options) {
14057 var node = buildCommon.makeSpan([], [buildGroup(group.body, options)]);
14058
14059 if (!group.smashHeight && !group.smashDepth) {
14060 return node;
14061 }
14062
14063 if (group.smashHeight) {
14064 node.height = 0; // In order to influence makeVList, we have to reset the children.
14065
14066 if (node.children) {
14067 for (var i = 0; i < node.children.length; i++) {
14068 node.children[i].height = 0;
14069 }
14070 }
14071 }
14072
14073 if (group.smashDepth) {
14074 node.depth = 0;
14075
14076 if (node.children) {
14077 for (var _i = 0; _i < node.children.length; _i++) {
14078 node.children[_i].depth = 0;
14079 }
14080 }
14081 } // At this point, we've reset the TeX-like height and depth values.
14082 // But the span still has an HTML line height.
14083 // makeVList applies "display: table-cell", which prevents the browser
14084 // from acting on that line height. So we'll call makeVList now.
14085
14086
14087 var smashedNode = buildCommon.makeVList({
14088 positionType: "firstBaseline",
14089 children: [{
14090 type: "elem",
14091 elem: node
14092 }]
14093 }, options); // For spacing, TeX treats \hphantom as a math group (same spacing as ord).
14094
14095 return buildCommon.makeSpan(["mord"], [smashedNode], options);
14096 },
14097 mathmlBuilder: function mathmlBuilder(group, options) {
14098 var node = new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)]);
14099
14100 if (group.smashHeight) {
14101 node.setAttribute("height", "0px");
14102 }
14103
14104 if (group.smashDepth) {
14105 node.setAttribute("depth", "0px");
14106 }
14107
14108 return node;
14109 }
14110});
14111;// CONCATENATED MODULE: ./src/functions/sqrt.js
14112
14113
14114
14115
14116
14117
14118
14119
14120defineFunction({
14121 type: "sqrt",
14122 names: ["\\sqrt"],
14123 props: {
14124 numArgs: 1,
14125 numOptionalArgs: 1
14126 },
14127 handler: function handler(_ref, args, optArgs) {
14128 var parser = _ref.parser;
14129 var index = optArgs[0];
14130 var body = args[0];
14131 return {
14132 type: "sqrt",
14133 mode: parser.mode,
14134 body: body,
14135 index: index
14136 };
14137 },
14138 htmlBuilder: function htmlBuilder(group, options) {
14139 // Square roots are handled in the TeXbook pg. 443, Rule 11.
14140 // First, we do the same steps as in overline to build the inner group
14141 // and line
14142 var inner = buildGroup(group.body, options.havingCrampedStyle());
14143
14144 if (inner.height === 0) {
14145 // Render a small surd.
14146 inner.height = options.fontMetrics().xHeight;
14147 } // Some groups can return document fragments. Handle those by wrapping
14148 // them in a span.
14149
14150
14151 inner = buildCommon.wrapFragment(inner, options); // Calculate the minimum size for the \surd delimiter
14152
14153 var metrics = options.fontMetrics();
14154 var theta = metrics.defaultRuleThickness;
14155 var phi = theta;
14156
14157 if (options.style.id < src_Style.TEXT.id) {
14158 phi = options.fontMetrics().xHeight;
14159 } // Calculate the clearance between the body and line
14160
14161
14162 var lineClearance = theta + phi / 4;
14163 var minDelimiterHeight = inner.height + inner.depth + lineClearance + theta; // Create a sqrt SVG of the required minimum size
14164
14165 var _delimiter$sqrtImage = delimiter.sqrtImage(minDelimiterHeight, options),
14166 img = _delimiter$sqrtImage.span,
14167 ruleWidth = _delimiter$sqrtImage.ruleWidth,
14168 advanceWidth = _delimiter$sqrtImage.advanceWidth;
14169
14170 var delimDepth = img.height - ruleWidth; // Adjust the clearance based on the delimiter size
14171
14172 if (delimDepth > inner.height + inner.depth + lineClearance) {
14173 lineClearance = (lineClearance + delimDepth - inner.height - inner.depth) / 2;
14174 } // Shift the sqrt image
14175
14176
14177 var imgShift = img.height - inner.height - lineClearance - ruleWidth;
14178 inner.style.paddingLeft = makeEm(advanceWidth); // Overlay the image and the argument.
14179
14180 var body = buildCommon.makeVList({
14181 positionType: "firstBaseline",
14182 children: [{
14183 type: "elem",
14184 elem: inner,
14185 wrapperClasses: ["svg-align"]
14186 }, {
14187 type: "kern",
14188 size: -(inner.height + imgShift)
14189 }, {
14190 type: "elem",
14191 elem: img
14192 }, {
14193 type: "kern",
14194 size: ruleWidth
14195 }]
14196 }, options);
14197
14198 if (!group.index) {
14199 return buildCommon.makeSpan(["mord", "sqrt"], [body], options);
14200 } else {
14201 // Handle the optional root index
14202 // The index is always in scriptscript style
14203 var newOptions = options.havingStyle(src_Style.SCRIPTSCRIPT);
14204 var rootm = buildGroup(group.index, newOptions, options); // The amount the index is shifted by. This is taken from the TeX
14205 // source, in the definition of `\r@@t`.
14206
14207 var toShift = 0.6 * (body.height - body.depth); // Build a VList with the superscript shifted up correctly
14208
14209 var rootVList = buildCommon.makeVList({
14210 positionType: "shift",
14211 positionData: -toShift,
14212 children: [{
14213 type: "elem",
14214 elem: rootm
14215 }]
14216 }, options); // Add a class surrounding it so we can add on the appropriate
14217 // kerning
14218
14219 var rootVListWrap = buildCommon.makeSpan(["root"], [rootVList]);
14220 return buildCommon.makeSpan(["mord", "sqrt"], [rootVListWrap, body], options);
14221 }
14222 },
14223 mathmlBuilder: function mathmlBuilder(group, options) {
14224 var body = group.body,
14225 index = group.index;
14226 return index ? new mathMLTree.MathNode("mroot", [buildMathML_buildGroup(body, options), buildMathML_buildGroup(index, options)]) : new mathMLTree.MathNode("msqrt", [buildMathML_buildGroup(body, options)]);
14227 }
14228});
14229;// CONCATENATED MODULE: ./src/functions/styling.js
14230
14231
14232
14233
14234
14235var styling_styleMap = {
14236 "display": src_Style.DISPLAY,
14237 "text": src_Style.TEXT,
14238 "script": src_Style.SCRIPT,
14239 "scriptscript": src_Style.SCRIPTSCRIPT
14240};
14241defineFunction({
14242 type: "styling",
14243 names: ["\\displaystyle", "\\textstyle", "\\scriptstyle", "\\scriptscriptstyle"],
14244 props: {
14245 numArgs: 0,
14246 allowedInText: true,
14247 primitive: true
14248 },
14249 handler: function handler(_ref, args) {
14250 var breakOnTokenText = _ref.breakOnTokenText,
14251 funcName = _ref.funcName,
14252 parser = _ref.parser;
14253 // parse out the implicit body
14254 var body = parser.parseExpression(true, breakOnTokenText); // TODO: Refactor to avoid duplicating styleMap in multiple places (e.g.
14255 // here and in buildHTML and de-dupe the enumeration of all the styles).
14256 // $FlowFixMe: The names above exactly match the styles.
14257
14258 var style = funcName.slice(1, funcName.length - 5);
14259 return {
14260 type: "styling",
14261 mode: parser.mode,
14262 // Figure out what style to use by pulling out the style from
14263 // the function name
14264 style: style,
14265 body: body
14266 };
14267 },
14268 htmlBuilder: function htmlBuilder(group, options) {
14269 // Style changes are handled in the TeXbook on pg. 442, Rule 3.
14270 var newStyle = styling_styleMap[group.style];
14271 var newOptions = options.havingStyle(newStyle).withFont('');
14272 return sizingGroup(group.body, newOptions, options);
14273 },
14274 mathmlBuilder: function mathmlBuilder(group, options) {
14275 // Figure out what style we're changing to.
14276 var newStyle = styling_styleMap[group.style];
14277 var newOptions = options.havingStyle(newStyle);
14278 var inner = buildMathML_buildExpression(group.body, newOptions);
14279 var node = new mathMLTree.MathNode("mstyle", inner);
14280 var styleAttributes = {
14281 "display": ["0", "true"],
14282 "text": ["0", "false"],
14283 "script": ["1", "false"],
14284 "scriptscript": ["2", "false"]
14285 };
14286 var attr = styleAttributes[group.style];
14287 node.setAttribute("scriptlevel", attr[0]);
14288 node.setAttribute("displaystyle", attr[1]);
14289 return node;
14290 }
14291});
14292;// CONCATENATED MODULE: ./src/functions/supsub.js
14293
14294
14295
14296
14297
14298
14299
14300
14301
14302
14303
14304
14305
14306
14307/**
14308 * Sometimes, groups perform special rules when they have superscripts or
14309 * subscripts attached to them. This function lets the `supsub` group know that
14310 * Sometimes, groups perform special rules when they have superscripts or
14311 * its inner element should handle the superscripts and subscripts instead of
14312 * handling them itself.
14313 */
14314var htmlBuilderDelegate = function htmlBuilderDelegate(group, options) {
14315 var base = group.base;
14316
14317 if (!base) {
14318 return null;
14319 } else if (base.type === "op") {
14320 // Operators handle supsubs differently when they have limits
14321 // (e.g. `\displaystyle\sum_2^3`)
14322 var delegate = base.limits && (options.style.size === src_Style.DISPLAY.size || base.alwaysHandleSupSub);
14323 return delegate ? op_htmlBuilder : null;
14324 } else if (base.type === "operatorname") {
14325 var _delegate = base.alwaysHandleSupSub && (options.style.size === src_Style.DISPLAY.size || base.limits);
14326
14327 return _delegate ? operatorname_htmlBuilder : null;
14328 } else if (base.type === "accent") {
14329 return utils.isCharacterBox(base.base) ? htmlBuilder : null;
14330 } else if (base.type === "horizBrace") {
14331 var isSup = !group.sub;
14332 return isSup === base.isOver ? horizBrace_htmlBuilder : null;
14333 } else {
14334 return null;
14335 }
14336}; // Super scripts and subscripts, whose precise placement can depend on other
14337// functions that precede them.
14338
14339
14340defineFunctionBuilders({
14341 type: "supsub",
14342 htmlBuilder: function htmlBuilder(group, options) {
14343 // Superscript and subscripts are handled in the TeXbook on page
14344 // 445-446, rules 18(a-f).
14345 // Here is where we defer to the inner group if it should handle
14346 // superscripts and subscripts itself.
14347 var builderDelegate = htmlBuilderDelegate(group, options);
14348
14349 if (builderDelegate) {
14350 return builderDelegate(group, options);
14351 }
14352
14353 var valueBase = group.base,
14354 valueSup = group.sup,
14355 valueSub = group.sub;
14356 var base = buildGroup(valueBase, options);
14357 var supm;
14358 var subm;
14359 var metrics = options.fontMetrics(); // Rule 18a
14360
14361 var supShift = 0;
14362 var subShift = 0;
14363 var isCharacterBox = valueBase && utils.isCharacterBox(valueBase);
14364
14365 if (valueSup) {
14366 var newOptions = options.havingStyle(options.style.sup());
14367 supm = buildGroup(valueSup, newOptions, options);
14368
14369 if (!isCharacterBox) {
14370 supShift = base.height - newOptions.fontMetrics().supDrop * newOptions.sizeMultiplier / options.sizeMultiplier;
14371 }
14372 }
14373
14374 if (valueSub) {
14375 var _newOptions = options.havingStyle(options.style.sub());
14376
14377 subm = buildGroup(valueSub, _newOptions, options);
14378
14379 if (!isCharacterBox) {
14380 subShift = base.depth + _newOptions.fontMetrics().subDrop * _newOptions.sizeMultiplier / options.sizeMultiplier;
14381 }
14382 } // Rule 18c
14383
14384
14385 var minSupShift;
14386
14387 if (options.style === src_Style.DISPLAY) {
14388 minSupShift = metrics.sup1;
14389 } else if (options.style.cramped) {
14390 minSupShift = metrics.sup3;
14391 } else {
14392 minSupShift = metrics.sup2;
14393 } // scriptspace is a font-size-independent size, so scale it
14394 // appropriately for use as the marginRight.
14395
14396
14397 var multiplier = options.sizeMultiplier;
14398 var marginRight = makeEm(0.5 / metrics.ptPerEm / multiplier);
14399 var marginLeft = null;
14400
14401 if (subm) {
14402 // Subscripts shouldn't be shifted by the base's italic correction.
14403 // Account for that by shifting the subscript back the appropriate
14404 // amount. Note we only do this when the base is a single symbol.
14405 var isOiint = group.base && group.base.type === "op" && group.base.name && (group.base.name === "\\oiint" || group.base.name === "\\oiiint");
14406
14407 if (base instanceof SymbolNode || isOiint) {
14408 // $FlowFixMe
14409 marginLeft = makeEm(-base.italic);
14410 }
14411 }
14412
14413 var supsub;
14414
14415 if (supm && subm) {
14416 supShift = Math.max(supShift, minSupShift, supm.depth + 0.25 * metrics.xHeight);
14417 subShift = Math.max(subShift, metrics.sub2);
14418 var ruleWidth = metrics.defaultRuleThickness; // Rule 18e
14419
14420 var maxWidth = 4 * ruleWidth;
14421
14422 if (supShift - supm.depth - (subm.height - subShift) < maxWidth) {
14423 subShift = maxWidth - (supShift - supm.depth) + subm.height;
14424 var psi = 0.8 * metrics.xHeight - (supShift - supm.depth);
14425
14426 if (psi > 0) {
14427 supShift += psi;
14428 subShift -= psi;
14429 }
14430 }
14431
14432 var vlistElem = [{
14433 type: "elem",
14434 elem: subm,
14435 shift: subShift,
14436 marginRight: marginRight,
14437 marginLeft: marginLeft
14438 }, {
14439 type: "elem",
14440 elem: supm,
14441 shift: -supShift,
14442 marginRight: marginRight
14443 }];
14444 supsub = buildCommon.makeVList({
14445 positionType: "individualShift",
14446 children: vlistElem
14447 }, options);
14448 } else if (subm) {
14449 // Rule 18b
14450 subShift = Math.max(subShift, metrics.sub1, subm.height - 0.8 * metrics.xHeight);
14451 var _vlistElem = [{
14452 type: "elem",
14453 elem: subm,
14454 marginLeft: marginLeft,
14455 marginRight: marginRight
14456 }];
14457 supsub = buildCommon.makeVList({
14458 positionType: "shift",
14459 positionData: subShift,
14460 children: _vlistElem
14461 }, options);
14462 } else if (supm) {
14463 // Rule 18c, d
14464 supShift = Math.max(supShift, minSupShift, supm.depth + 0.25 * metrics.xHeight);
14465 supsub = buildCommon.makeVList({
14466 positionType: "shift",
14467 positionData: -supShift,
14468 children: [{
14469 type: "elem",
14470 elem: supm,
14471 marginRight: marginRight
14472 }]
14473 }, options);
14474 } else {
14475 throw new Error("supsub must have either sup or sub.");
14476 } // Wrap the supsub vlist in a span.msupsub to reset text-align.
14477
14478
14479 var mclass = getTypeOfDomTree(base, "right") || "mord";
14480 return buildCommon.makeSpan([mclass], [base, buildCommon.makeSpan(["msupsub"], [supsub])], options);
14481 },
14482 mathmlBuilder: function mathmlBuilder(group, options) {
14483 // Is the inner group a relevant horizonal brace?
14484 var isBrace = false;
14485 var isOver;
14486 var isSup;
14487
14488 if (group.base && group.base.type === "horizBrace") {
14489 isSup = !!group.sup;
14490
14491 if (isSup === group.base.isOver) {
14492 isBrace = true;
14493 isOver = group.base.isOver;
14494 }
14495 }
14496
14497 if (group.base && (group.base.type === "op" || group.base.type === "operatorname")) {
14498 group.base.parentIsSupSub = true;
14499 }
14500
14501 var children = [buildMathML_buildGroup(group.base, options)];
14502
14503 if (group.sub) {
14504 children.push(buildMathML_buildGroup(group.sub, options));
14505 }
14506
14507 if (group.sup) {
14508 children.push(buildMathML_buildGroup(group.sup, options));
14509 }
14510
14511 var nodeType;
14512
14513 if (isBrace) {
14514 nodeType = isOver ? "mover" : "munder";
14515 } else if (!group.sub) {
14516 var base = group.base;
14517
14518 if (base && base.type === "op" && base.limits && (options.style === src_Style.DISPLAY || base.alwaysHandleSupSub)) {
14519 nodeType = "mover";
14520 } else if (base && base.type === "operatorname" && base.alwaysHandleSupSub && (base.limits || options.style === src_Style.DISPLAY)) {
14521 nodeType = "mover";
14522 } else {
14523 nodeType = "msup";
14524 }
14525 } else if (!group.sup) {
14526 var _base = group.base;
14527
14528 if (_base && _base.type === "op" && _base.limits && (options.style === src_Style.DISPLAY || _base.alwaysHandleSupSub)) {
14529 nodeType = "munder";
14530 } else if (_base && _base.type === "operatorname" && _base.alwaysHandleSupSub && (_base.limits || options.style === src_Style.DISPLAY)) {
14531 nodeType = "munder";
14532 } else {
14533 nodeType = "msub";
14534 }
14535 } else {
14536 var _base2 = group.base;
14537
14538 if (_base2 && _base2.type === "op" && _base2.limits && options.style === src_Style.DISPLAY) {
14539 nodeType = "munderover";
14540 } else if (_base2 && _base2.type === "operatorname" && _base2.alwaysHandleSupSub && (options.style === src_Style.DISPLAY || _base2.limits)) {
14541 nodeType = "munderover";
14542 } else {
14543 nodeType = "msubsup";
14544 }
14545 }
14546
14547 return new mathMLTree.MathNode(nodeType, children);
14548 }
14549});
14550;// CONCATENATED MODULE: ./src/functions/symbolsOp.js
14551
14552
14553
14554 // Operator ParseNodes created in Parser.js from symbol Groups in src/symbols.js.
14555
14556defineFunctionBuilders({
14557 type: "atom",
14558 htmlBuilder: function htmlBuilder(group, options) {
14559 return buildCommon.mathsym(group.text, group.mode, options, ["m" + group.family]);
14560 },
14561 mathmlBuilder: function mathmlBuilder(group, options) {
14562 var node = new mathMLTree.MathNode("mo", [makeText(group.text, group.mode)]);
14563
14564 if (group.family === "bin") {
14565 var variant = getVariant(group, options);
14566
14567 if (variant === "bold-italic") {
14568 node.setAttribute("mathvariant", variant);
14569 }
14570 } else if (group.family === "punct") {
14571 node.setAttribute("separator", "true");
14572 } else if (group.family === "open" || group.family === "close") {
14573 // Delims built here should not stretch vertically.
14574 // See delimsizing.js for stretchy delims.
14575 node.setAttribute("stretchy", "false");
14576 }
14577
14578 return node;
14579 }
14580});
14581;// CONCATENATED MODULE: ./src/functions/symbolsOrd.js
14582
14583
14584
14585
14586// "mathord" and "textord" ParseNodes created in Parser.js from symbol Groups in
14587// src/symbols.js.
14588var defaultVariant = {
14589 "mi": "italic",
14590 "mn": "normal",
14591 "mtext": "normal"
14592};
14593defineFunctionBuilders({
14594 type: "mathord",
14595 htmlBuilder: function htmlBuilder(group, options) {
14596 return buildCommon.makeOrd(group, options, "mathord");
14597 },
14598 mathmlBuilder: function mathmlBuilder(group, options) {
14599 var node = new mathMLTree.MathNode("mi", [makeText(group.text, group.mode, options)]);
14600 var variant = getVariant(group, options) || "italic";
14601
14602 if (variant !== defaultVariant[node.type]) {
14603 node.setAttribute("mathvariant", variant);
14604 }
14605
14606 return node;
14607 }
14608});
14609defineFunctionBuilders({
14610 type: "textord",
14611 htmlBuilder: function htmlBuilder(group, options) {
14612 return buildCommon.makeOrd(group, options, "textord");
14613 },
14614 mathmlBuilder: function mathmlBuilder(group, options) {
14615 var text = makeText(group.text, group.mode, options);
14616 var variant = getVariant(group, options) || "normal";
14617 var node;
14618
14619 if (group.mode === 'text') {
14620 node = new mathMLTree.MathNode("mtext", [text]);
14621 } else if (/[0-9]/.test(group.text)) {
14622 node = new mathMLTree.MathNode("mn", [text]);
14623 } else if (group.text === "\\prime") {
14624 node = new mathMLTree.MathNode("mo", [text]);
14625 } else {
14626 node = new mathMLTree.MathNode("mi", [text]);
14627 }
14628
14629 if (variant !== defaultVariant[node.type]) {
14630 node.setAttribute("mathvariant", variant);
14631 }
14632
14633 return node;
14634 }
14635});
14636;// CONCATENATED MODULE: ./src/functions/symbolsSpacing.js
14637
14638
14639
14640 // A map of CSS-based spacing functions to their CSS class.
14641
14642var cssSpace = {
14643 "\\nobreak": "nobreak",
14644 "\\allowbreak": "allowbreak"
14645}; // A lookup table to determine whether a spacing function/symbol should be
14646// treated like a regular space character. If a symbol or command is a key
14647// in this table, then it should be a regular space character. Furthermore,
14648// the associated value may have a `className` specifying an extra CSS class
14649// to add to the created `span`.
14650
14651var regularSpace = {
14652 " ": {},
14653 "\\ ": {},
14654 "~": {
14655 className: "nobreak"
14656 },
14657 "\\space": {},
14658 "\\nobreakspace": {
14659 className: "nobreak"
14660 }
14661}; // ParseNode<"spacing"> created in Parser.js from the "spacing" symbol Groups in
14662// src/symbols.js.
14663
14664defineFunctionBuilders({
14665 type: "spacing",
14666 htmlBuilder: function htmlBuilder(group, options) {
14667 if (regularSpace.hasOwnProperty(group.text)) {
14668 var className = regularSpace[group.text].className || ""; // Spaces are generated by adding an actual space. Each of these
14669 // things has an entry in the symbols table, so these will be turned
14670 // into appropriate outputs.
14671
14672 if (group.mode === "text") {
14673 var ord = buildCommon.makeOrd(group, options, "textord");
14674 ord.classes.push(className);
14675 return ord;
14676 } else {
14677 return buildCommon.makeSpan(["mspace", className], [buildCommon.mathsym(group.text, group.mode, options)], options);
14678 }
14679 } else if (cssSpace.hasOwnProperty(group.text)) {
14680 // Spaces based on just a CSS class.
14681 return buildCommon.makeSpan(["mspace", cssSpace[group.text]], [], options);
14682 } else {
14683 throw new src_ParseError("Unknown type of space \"" + group.text + "\"");
14684 }
14685 },
14686 mathmlBuilder: function mathmlBuilder(group, options) {
14687 var node;
14688
14689 if (regularSpace.hasOwnProperty(group.text)) {
14690 node = new mathMLTree.MathNode("mtext", [new mathMLTree.TextNode("\xA0")]);
14691 } else if (cssSpace.hasOwnProperty(group.text)) {
14692 // CSS-based MathML spaces (\nobreak, \allowbreak) are ignored
14693 return new mathMLTree.MathNode("mspace");
14694 } else {
14695 throw new src_ParseError("Unknown type of space \"" + group.text + "\"");
14696 }
14697
14698 return node;
14699 }
14700});
14701;// CONCATENATED MODULE: ./src/functions/tag.js
14702
14703
14704
14705
14706var pad = function pad() {
14707 var padNode = new mathMLTree.MathNode("mtd", []);
14708 padNode.setAttribute("width", "50%");
14709 return padNode;
14710};
14711
14712defineFunctionBuilders({
14713 type: "tag",
14714 mathmlBuilder: function mathmlBuilder(group, options) {
14715 var table = new mathMLTree.MathNode("mtable", [new mathMLTree.MathNode("mtr", [pad(), new mathMLTree.MathNode("mtd", [buildExpressionRow(group.body, options)]), pad(), new mathMLTree.MathNode("mtd", [buildExpressionRow(group.tag, options)])])]);
14716 table.setAttribute("width", "100%");
14717 return table; // TODO: Left-aligned tags.
14718 // Currently, the group and options passed here do not contain
14719 // enough info to set tag alignment. `leqno` is in Settings but it is
14720 // not passed to Options. On the HTML side, leqno is
14721 // set by a CSS class applied in buildTree.js. That would have worked
14722 // in MathML if browsers supported <mlabeledtr>. Since they don't, we
14723 // need to rewrite the way this function is called.
14724 }
14725});
14726;// CONCATENATED MODULE: ./src/functions/text.js
14727
14728
14729
14730 // Non-mathy text, possibly in a font
14731
14732var textFontFamilies = {
14733 "\\text": undefined,
14734 "\\textrm": "textrm",
14735 "\\textsf": "textsf",
14736 "\\texttt": "texttt",
14737 "\\textnormal": "textrm"
14738};
14739var textFontWeights = {
14740 "\\textbf": "textbf",
14741 "\\textmd": "textmd"
14742};
14743var textFontShapes = {
14744 "\\textit": "textit",
14745 "\\textup": "textup"
14746};
14747
14748var optionsWithFont = function optionsWithFont(group, options) {
14749 var font = group.font; // Checks if the argument is a font family or a font style.
14750
14751 if (!font) {
14752 return options;
14753 } else if (textFontFamilies[font]) {
14754 return options.withTextFontFamily(textFontFamilies[font]);
14755 } else if (textFontWeights[font]) {
14756 return options.withTextFontWeight(textFontWeights[font]);
14757 } else {
14758 return options.withTextFontShape(textFontShapes[font]);
14759 }
14760};
14761
14762defineFunction({
14763 type: "text",
14764 names: [// Font families
14765 "\\text", "\\textrm", "\\textsf", "\\texttt", "\\textnormal", // Font weights
14766 "\\textbf", "\\textmd", // Font Shapes
14767 "\\textit", "\\textup"],
14768 props: {
14769 numArgs: 1,
14770 argTypes: ["text"],
14771 allowedInArgument: true,
14772 allowedInText: true
14773 },
14774 handler: function handler(_ref, args) {
14775 var parser = _ref.parser,
14776 funcName = _ref.funcName;
14777 var body = args[0];
14778 return {
14779 type: "text",
14780 mode: parser.mode,
14781 body: ordargument(body),
14782 font: funcName
14783 };
14784 },
14785 htmlBuilder: function htmlBuilder(group, options) {
14786 var newOptions = optionsWithFont(group, options);
14787 var inner = buildExpression(group.body, newOptions, true);
14788 return buildCommon.makeSpan(["mord", "text"], inner, newOptions);
14789 },
14790 mathmlBuilder: function mathmlBuilder(group, options) {
14791 var newOptions = optionsWithFont(group, options);
14792 return buildExpressionRow(group.body, newOptions);
14793 }
14794});
14795;// CONCATENATED MODULE: ./src/functions/underline.js
14796
14797
14798
14799
14800
14801defineFunction({
14802 type: "underline",
14803 names: ["\\underline"],
14804 props: {
14805 numArgs: 1,
14806 allowedInText: true
14807 },
14808 handler: function handler(_ref, args) {
14809 var parser = _ref.parser;
14810 return {
14811 type: "underline",
14812 mode: parser.mode,
14813 body: args[0]
14814 };
14815 },
14816 htmlBuilder: function htmlBuilder(group, options) {
14817 // Underlines are handled in the TeXbook pg 443, Rule 10.
14818 // Build the inner group.
14819 var innerGroup = buildGroup(group.body, options); // Create the line to go below the body
14820
14821 var line = buildCommon.makeLineSpan("underline-line", options); // Generate the vlist, with the appropriate kerns
14822
14823 var defaultRuleThickness = options.fontMetrics().defaultRuleThickness;
14824 var vlist = buildCommon.makeVList({
14825 positionType: "top",
14826 positionData: innerGroup.height,
14827 children: [{
14828 type: "kern",
14829 size: defaultRuleThickness
14830 }, {
14831 type: "elem",
14832 elem: line
14833 }, {
14834 type: "kern",
14835 size: 3 * defaultRuleThickness
14836 }, {
14837 type: "elem",
14838 elem: innerGroup
14839 }]
14840 }, options);
14841 return buildCommon.makeSpan(["mord", "underline"], [vlist], options);
14842 },
14843 mathmlBuilder: function mathmlBuilder(group, options) {
14844 var operator = new mathMLTree.MathNode("mo", [new mathMLTree.TextNode("\u203E")]);
14845 operator.setAttribute("stretchy", "true");
14846 var node = new mathMLTree.MathNode("munder", [buildMathML_buildGroup(group.body, options), operator]);
14847 node.setAttribute("accentunder", "true");
14848 return node;
14849 }
14850});
14851;// CONCATENATED MODULE: ./src/functions/vcenter.js
14852
14853
14854
14855
14856 // \vcenter: Vertically center the argument group on the math axis.
14857
14858defineFunction({
14859 type: "vcenter",
14860 names: ["\\vcenter"],
14861 props: {
14862 numArgs: 1,
14863 argTypes: ["original"],
14864 // In LaTeX, \vcenter can act only on a box.
14865 allowedInText: false
14866 },
14867 handler: function handler(_ref, args) {
14868 var parser = _ref.parser;
14869 return {
14870 type: "vcenter",
14871 mode: parser.mode,
14872 body: args[0]
14873 };
14874 },
14875 htmlBuilder: function htmlBuilder(group, options) {
14876 var body = buildGroup(group.body, options);
14877 var axisHeight = options.fontMetrics().axisHeight;
14878 var dy = 0.5 * (body.height - axisHeight - (body.depth + axisHeight));
14879 return buildCommon.makeVList({
14880 positionType: "shift",
14881 positionData: dy,
14882 children: [{
14883 type: "elem",
14884 elem: body
14885 }]
14886 }, options);
14887 },
14888 mathmlBuilder: function mathmlBuilder(group, options) {
14889 // There is no way to do this in MathML.
14890 // Write a class as a breadcrumb in case some post-processor wants
14891 // to perform a vcenter adjustment.
14892 return new mathMLTree.MathNode("mpadded", [buildMathML_buildGroup(group.body, options)], ["vcenter"]);
14893 }
14894});
14895;// CONCATENATED MODULE: ./src/functions/verb.js
14896
14897
14898
14899
14900defineFunction({
14901 type: "verb",
14902 names: ["\\verb"],
14903 props: {
14904 numArgs: 0,
14905 allowedInText: true
14906 },
14907 handler: function handler(context, args, optArgs) {
14908 // \verb and \verb* are dealt with directly in Parser.js.
14909 // If we end up here, it's because of a failure to match the two delimiters
14910 // in the regex in Lexer.js. LaTeX raises the following error when \verb is
14911 // terminated by end of line (or file).
14912 throw new src_ParseError("\\verb ended by end of line instead of matching delimiter");
14913 },
14914 htmlBuilder: function htmlBuilder(group, options) {
14915 var text = makeVerb(group);
14916 var body = []; // \verb enters text mode and therefore is sized like \textstyle
14917
14918 var newOptions = options.havingStyle(options.style.text());
14919
14920 for (var i = 0; i < text.length; i++) {
14921 var c = text[i];
14922
14923 if (c === '~') {
14924 c = '\\textasciitilde';
14925 }
14926
14927 body.push(buildCommon.makeSymbol(c, "Typewriter-Regular", group.mode, newOptions, ["mord", "texttt"]));
14928 }
14929
14930 return buildCommon.makeSpan(["mord", "text"].concat(newOptions.sizingClasses(options)), buildCommon.tryCombineChars(body), newOptions);
14931 },
14932 mathmlBuilder: function mathmlBuilder(group, options) {
14933 var text = new mathMLTree.TextNode(makeVerb(group));
14934 var node = new mathMLTree.MathNode("mtext", [text]);
14935 node.setAttribute("mathvariant", "monospace");
14936 return node;
14937 }
14938});
14939/**
14940 * Converts verb group into body string.
14941 *
14942 * \verb* replaces each space with an open box \u2423
14943 * \verb replaces each space with a no-break space \xA0
14944 */
14945
14946var makeVerb = function makeVerb(group) {
14947 return group.body.replace(/ /g, group.star ? "\u2423" : '\xA0');
14948};
14949;// CONCATENATED MODULE: ./src/functions.js
14950/** Include this to ensure that all functions are defined. */
14951
14952var functions = _functions;
14953/* harmony default export */ var src_functions = (functions); // TODO(kevinb): have functions return an object and call defineFunction with
14954// that object in this file instead of relying on side-effects.
14955
14956
14957
14958
14959
14960
14961
14962
14963
14964
14965
14966
14967
14968
14969
14970
14971
14972
14973
14974
14975
14976
14977
14978
14979
14980
14981
14982
14983
14984
14985
14986
14987
14988
14989
14990
14991
14992
14993
14994
14995
14996
14997
14998
14999
15000
15001;// CONCATENATED MODULE: ./src/Lexer.js
15002/**
15003 * The Lexer class handles tokenizing the input in various ways. Since our
15004 * parser expects us to be able to backtrack, the lexer allows lexing from any
15005 * given starting point.
15006 *
15007 * Its main exposed function is the `lex` function, which takes a position to
15008 * lex from and a type of token to lex. It defers to the appropriate `_innerLex`
15009 * function.
15010 *
15011 * The various `_innerLex` functions perform the actual lexing of different
15012 * kinds.
15013 */
15014
15015
15016
15017
15018/* The following tokenRegex
15019 * - matches typical whitespace (but not NBSP etc.) using its first group
15020 * - does not match any control character \x00-\x1f except whitespace
15021 * - does not match a bare backslash
15022 * - matches any ASCII character except those just mentioned
15023 * - does not match the BMP private use area \uE000-\uF8FF
15024 * - does not match bare surrogate code units
15025 * - matches any BMP character except for those just described
15026 * - matches any valid Unicode surrogate pair
15027 * - matches a backslash followed by one or more whitespace characters
15028 * - matches a backslash followed by one or more letters then whitespace
15029 * - matches a backslash followed by any BMP character
15030 * Capturing groups:
15031 * [1] regular whitespace
15032 * [2] backslash followed by whitespace
15033 * [3] anything else, which may include:
15034 * [4] left character of \verb*
15035 * [5] left character of \verb
15036 * [6] backslash followed by word, excluding any trailing whitespace
15037 * Just because the Lexer matches something doesn't mean it's valid input:
15038 * If there is no matching function or symbol definition, the Parser will
15039 * still reject the input.
15040 */
15041var spaceRegexString = "[ \r\n\t]";
15042var controlWordRegexString = "\\\\[a-zA-Z@]+";
15043var controlSymbolRegexString = "\\\\[^\uD800-\uDFFF]";
15044var controlWordWhitespaceRegexString = "(" + controlWordRegexString + ")" + spaceRegexString + "*";
15045var controlSpaceRegexString = "\\\\(\n|[ \r\t]+\n?)[ \r\t]*";
15046var combiningDiacriticalMarkString = "[\u0300-\u036F]";
15047var combiningDiacriticalMarksEndRegex = new RegExp(combiningDiacriticalMarkString + "+$");
15048var tokenRegexString = "(" + spaceRegexString + "+)|" + ( // whitespace
15049controlSpaceRegexString + "|") + // \whitespace
15050"([!-\\[\\]-\u2027\u202A-\uD7FF\uF900-\uFFFF]" + ( // single codepoint
15051combiningDiacriticalMarkString + "*") + // ...plus accents
15052"|[\uD800-\uDBFF][\uDC00-\uDFFF]" + ( // surrogate pair
15053combiningDiacriticalMarkString + "*") + // ...plus accents
15054"|\\\\verb\\*([^]).*?\\4" + // \verb*
15055"|\\\\verb([^*a-zA-Z]).*?\\5" + ( // \verb unstarred
15056"|" + controlWordWhitespaceRegexString) + ( // \macroName + spaces
15057"|" + controlSymbolRegexString + ")"); // \\, \', etc.
15058
15059/** Main Lexer class */
15060
15061var Lexer = /*#__PURE__*/function () {
15062 // Category codes. The lexer only supports comment characters (14) for now.
15063 // MacroExpander additionally distinguishes active (13).
15064 function Lexer(input, settings) {
15065 this.input = void 0;
15066 this.settings = void 0;
15067 this.tokenRegex = void 0;
15068 this.catcodes = void 0;
15069 // Separate accents from characters
15070 this.input = input;
15071 this.settings = settings;
15072 this.tokenRegex = new RegExp(tokenRegexString, 'g');
15073 this.catcodes = {
15074 "%": 14,
15075 // comment character
15076 "~": 13 // active character
15077
15078 };
15079 }
15080
15081 var _proto = Lexer.prototype;
15082
15083 _proto.setCatcode = function setCatcode(char, code) {
15084 this.catcodes[char] = code;
15085 }
15086 /**
15087 * This function lexes a single token.
15088 */
15089 ;
15090
15091 _proto.lex = function lex() {
15092 var input = this.input;
15093 var pos = this.tokenRegex.lastIndex;
15094
15095 if (pos === input.length) {
15096 return new Token("EOF", new SourceLocation(this, pos, pos));
15097 }
15098
15099 var match = this.tokenRegex.exec(input);
15100
15101 if (match === null || match.index !== pos) {
15102 throw new src_ParseError("Unexpected character: '" + input[pos] + "'", new Token(input[pos], new SourceLocation(this, pos, pos + 1)));
15103 }
15104
15105 var text = match[6] || match[3] || (match[2] ? "\\ " : " ");
15106
15107 if (this.catcodes[text] === 14) {
15108 // comment character
15109 var nlIndex = input.indexOf('\n', this.tokenRegex.lastIndex);
15110
15111 if (nlIndex === -1) {
15112 this.tokenRegex.lastIndex = input.length; // EOF
15113
15114 this.settings.reportNonstrict("commentAtEnd", "% comment has no terminating newline; LaTeX would " + "fail because of commenting the end of math mode (e.g. $)");
15115 } else {
15116 this.tokenRegex.lastIndex = nlIndex + 1;
15117 }
15118
15119 return this.lex();
15120 }
15121
15122 return new Token(text, new SourceLocation(this, pos, this.tokenRegex.lastIndex));
15123 };
15124
15125 return Lexer;
15126}();
15127
15128
15129;// CONCATENATED MODULE: ./src/Namespace.js
15130/**
15131 * A `Namespace` refers to a space of nameable things like macros or lengths,
15132 * which can be `set` either globally or local to a nested group, using an
15133 * undo stack similar to how TeX implements this functionality.
15134 * Performance-wise, `get` and local `set` take constant time, while global
15135 * `set` takes time proportional to the depth of group nesting.
15136 */
15137
15138
15139var Namespace = /*#__PURE__*/function () {
15140 /**
15141 * Both arguments are optional. The first argument is an object of
15142 * built-in mappings which never change. The second argument is an object
15143 * of initial (global-level) mappings, which will constantly change
15144 * according to any global/top-level `set`s done.
15145 */
15146 function Namespace(builtins, globalMacros) {
15147 if (builtins === void 0) {
15148 builtins = {};
15149 }
15150
15151 if (globalMacros === void 0) {
15152 globalMacros = {};
15153 }
15154
15155 this.current = void 0;
15156 this.builtins = void 0;
15157 this.undefStack = void 0;
15158 this.current = globalMacros;
15159 this.builtins = builtins;
15160 this.undefStack = [];
15161 }
15162 /**
15163 * Start a new nested group, affecting future local `set`s.
15164 */
15165
15166
15167 var _proto = Namespace.prototype;
15168
15169 _proto.beginGroup = function beginGroup() {
15170 this.undefStack.push({});
15171 }
15172 /**
15173 * End current nested group, restoring values before the group began.
15174 */
15175 ;
15176
15177 _proto.endGroup = function endGroup() {
15178 if (this.undefStack.length === 0) {
15179 throw new src_ParseError("Unbalanced namespace destruction: attempt " + "to pop global namespace; please report this as a bug");
15180 }
15181
15182 var undefs = this.undefStack.pop();
15183
15184 for (var undef in undefs) {
15185 if (undefs.hasOwnProperty(undef)) {
15186 if (undefs[undef] == null) {
15187 delete this.current[undef];
15188 } else {
15189 this.current[undef] = undefs[undef];
15190 }
15191 }
15192 }
15193 }
15194 /**
15195 * Ends all currently nested groups (if any), restoring values before the
15196 * groups began. Useful in case of an error in the middle of parsing.
15197 */
15198 ;
15199
15200 _proto.endGroups = function endGroups() {
15201 while (this.undefStack.length > 0) {
15202 this.endGroup();
15203 }
15204 }
15205 /**
15206 * Detect whether `name` has a definition. Equivalent to
15207 * `get(name) != null`.
15208 */
15209 ;
15210
15211 _proto.has = function has(name) {
15212 return this.current.hasOwnProperty(name) || this.builtins.hasOwnProperty(name);
15213 }
15214 /**
15215 * Get the current value of a name, or `undefined` if there is no value.
15216 *
15217 * Note: Do not use `if (namespace.get(...))` to detect whether a macro
15218 * is defined, as the definition may be the empty string which evaluates
15219 * to `false` in JavaScript. Use `if (namespace.get(...) != null)` or
15220 * `if (namespace.has(...))`.
15221 */
15222 ;
15223
15224 _proto.get = function get(name) {
15225 if (this.current.hasOwnProperty(name)) {
15226 return this.current[name];
15227 } else {
15228 return this.builtins[name];
15229 }
15230 }
15231 /**
15232 * Set the current value of a name, and optionally set it globally too.
15233 * Local set() sets the current value and (when appropriate) adds an undo
15234 * operation to the undo stack. Global set() may change the undo
15235 * operation at every level, so takes time linear in their number.
15236 * A value of undefined means to delete existing definitions.
15237 */
15238 ;
15239
15240 _proto.set = function set(name, value, global) {
15241 if (global === void 0) {
15242 global = false;
15243 }
15244
15245 if (global) {
15246 // Global set is equivalent to setting in all groups. Simulate this
15247 // by destroying any undos currently scheduled for this name,
15248 // and adding an undo with the *new* value (in case it later gets
15249 // locally reset within this environment).
15250 for (var i = 0; i < this.undefStack.length; i++) {
15251 delete this.undefStack[i][name];
15252 }
15253
15254 if (this.undefStack.length > 0) {
15255 this.undefStack[this.undefStack.length - 1][name] = value;
15256 }
15257 } else {
15258 // Undo this set at end of this group (possibly to `undefined`),
15259 // unless an undo is already in place, in which case that older
15260 // value is the correct one.
15261 var top = this.undefStack[this.undefStack.length - 1];
15262
15263 if (top && !top.hasOwnProperty(name)) {
15264 top[name] = this.current[name];
15265 }
15266 }
15267
15268 if (value == null) {
15269 delete this.current[name];
15270 } else {
15271 this.current[name] = value;
15272 }
15273 };
15274
15275 return Namespace;
15276}();
15277
15278
15279;// CONCATENATED MODULE: ./src/macros.js
15280/**
15281 * Predefined macros for KaTeX.
15282 * This can be used to define some commands in terms of others.
15283 */
15284// Export global macros object from defineMacro
15285
15286var macros = _macros;
15287/* harmony default export */ var src_macros = (macros);
15288
15289
15290
15291
15292
15293 //////////////////////////////////////////////////////////////////////
15294// macro tools
15295
15296defineMacro("\\noexpand", function (context) {
15297 // The expansion is the token itself; but that token is interpreted
15298 // as if its meaning were ‘\relax’ if it is a control sequence that
15299 // would ordinarily be expanded by TeX’s expansion rules.
15300 var t = context.popToken();
15301
15302 if (context.isExpandable(t.text)) {
15303 t.noexpand = true;
15304 t.treatAsRelax = true;
15305 }
15306
15307 return {
15308 tokens: [t],
15309 numArgs: 0
15310 };
15311});
15312defineMacro("\\expandafter", function (context) {
15313 // TeX first reads the token that comes immediately after \expandafter,
15314 // without expanding it; let’s call this token t. Then TeX reads the
15315 // token that comes after t (and possibly more tokens, if that token
15316 // has an argument), replacing it by its expansion. Finally TeX puts
15317 // t back in front of that expansion.
15318 var t = context.popToken();
15319 context.expandOnce(true); // expand only an expandable token
15320
15321 return {
15322 tokens: [t],
15323 numArgs: 0
15324 };
15325}); // LaTeX's \@firstoftwo{#1}{#2} expands to #1, skipping #2
15326// TeX source: \long\def\@firstoftwo#1#2{#1}
15327
15328defineMacro("\\@firstoftwo", function (context) {
15329 var args = context.consumeArgs(2);
15330 return {
15331 tokens: args[0],
15332 numArgs: 0
15333 };
15334}); // LaTeX's \@secondoftwo{#1}{#2} expands to #2, skipping #1
15335// TeX source: \long\def\@secondoftwo#1#2{#2}
15336
15337defineMacro("\\@secondoftwo", function (context) {
15338 var args = context.consumeArgs(2);
15339 return {
15340 tokens: args[1],
15341 numArgs: 0
15342 };
15343}); // LaTeX's \@ifnextchar{#1}{#2}{#3} looks ahead to the next (unexpanded)
15344// symbol that isn't a space, consuming any spaces but not consuming the
15345// first nonspace character. If that nonspace character matches #1, then
15346// the macro expands to #2; otherwise, it expands to #3.
15347
15348defineMacro("\\@ifnextchar", function (context) {
15349 var args = context.consumeArgs(3); // symbol, if, else
15350
15351 context.consumeSpaces();
15352 var nextToken = context.future();
15353
15354 if (args[0].length === 1 && args[0][0].text === nextToken.text) {
15355 return {
15356 tokens: args[1],
15357 numArgs: 0
15358 };
15359 } else {
15360 return {
15361 tokens: args[2],
15362 numArgs: 0
15363 };
15364 }
15365}); // LaTeX's \@ifstar{#1}{#2} looks ahead to the next (unexpanded) symbol.
15366// If it is `*`, then it consumes the symbol, and the macro expands to #1;
15367// otherwise, the macro expands to #2 (without consuming the symbol).
15368// TeX source: \def\@ifstar#1{\@ifnextchar *{\@firstoftwo{#1}}}
15369
15370defineMacro("\\@ifstar", "\\@ifnextchar *{\\@firstoftwo{#1}}"); // LaTeX's \TextOrMath{#1}{#2} expands to #1 in text mode, #2 in math mode
15371
15372defineMacro("\\TextOrMath", function (context) {
15373 var args = context.consumeArgs(2);
15374
15375 if (context.mode === 'text') {
15376 return {
15377 tokens: args[0],
15378 numArgs: 0
15379 };
15380 } else {
15381 return {
15382 tokens: args[1],
15383 numArgs: 0
15384 };
15385 }
15386}); // Lookup table for parsing numbers in base 8 through 16
15387
15388var digitToNumber = {
15389 "0": 0,
15390 "1": 1,
15391 "2": 2,
15392 "3": 3,
15393 "4": 4,
15394 "5": 5,
15395 "6": 6,
15396 "7": 7,
15397 "8": 8,
15398 "9": 9,
15399 "a": 10,
15400 "A": 10,
15401 "b": 11,
15402 "B": 11,
15403 "c": 12,
15404 "C": 12,
15405 "d": 13,
15406 "D": 13,
15407 "e": 14,
15408 "E": 14,
15409 "f": 15,
15410 "F": 15
15411}; // TeX \char makes a literal character (catcode 12) using the following forms:
15412// (see The TeXBook, p. 43)
15413// \char123 -- decimal
15414// \char'123 -- octal
15415// \char"123 -- hex
15416// \char`x -- character that can be written (i.e. isn't active)
15417// \char`\x -- character that cannot be written (e.g. %)
15418// These all refer to characters from the font, so we turn them into special
15419// calls to a function \@char dealt with in the Parser.
15420
15421defineMacro("\\char", function (context) {
15422 var token = context.popToken();
15423 var base;
15424 var number = '';
15425
15426 if (token.text === "'") {
15427 base = 8;
15428 token = context.popToken();
15429 } else if (token.text === '"') {
15430 base = 16;
15431 token = context.popToken();
15432 } else if (token.text === "`") {
15433 token = context.popToken();
15434
15435 if (token.text[0] === "\\") {
15436 number = token.text.charCodeAt(1);
15437 } else if (token.text === "EOF") {
15438 throw new src_ParseError("\\char` missing argument");
15439 } else {
15440 number = token.text.charCodeAt(0);
15441 }
15442 } else {
15443 base = 10;
15444 }
15445
15446 if (base) {
15447 // Parse a number in the given base, starting with first `token`.
15448 number = digitToNumber[token.text];
15449
15450 if (number == null || number >= base) {
15451 throw new src_ParseError("Invalid base-" + base + " digit " + token.text);
15452 }
15453
15454 var digit;
15455
15456 while ((digit = digitToNumber[context.future().text]) != null && digit < base) {
15457 number *= base;
15458 number += digit;
15459 context.popToken();
15460 }
15461 }
15462
15463 return "\\@char{" + number + "}";
15464}); // \newcommand{\macro}[args]{definition}
15465// \renewcommand{\macro}[args]{definition}
15466// TODO: Optional arguments: \newcommand{\macro}[args][default]{definition}
15467
15468var newcommand = function newcommand(context, existsOK, nonexistsOK) {
15469 var arg = context.consumeArg().tokens;
15470
15471 if (arg.length !== 1) {
15472 throw new src_ParseError("\\newcommand's first argument must be a macro name");
15473 }
15474
15475 var name = arg[0].text;
15476 var exists = context.isDefined(name);
15477
15478 if (exists && !existsOK) {
15479 throw new src_ParseError("\\newcommand{" + name + "} attempting to redefine " + (name + "; use \\renewcommand"));
15480 }
15481
15482 if (!exists && !nonexistsOK) {
15483 throw new src_ParseError("\\renewcommand{" + name + "} when command " + name + " " + "does not yet exist; use \\newcommand");
15484 }
15485
15486 var numArgs = 0;
15487 arg = context.consumeArg().tokens;
15488
15489 if (arg.length === 1 && arg[0].text === "[") {
15490 var argText = '';
15491 var token = context.expandNextToken();
15492
15493 while (token.text !== "]" && token.text !== "EOF") {
15494 // TODO: Should properly expand arg, e.g., ignore {}s
15495 argText += token.text;
15496 token = context.expandNextToken();
15497 }
15498
15499 if (!argText.match(/^\s*[0-9]+\s*$/)) {
15500 throw new src_ParseError("Invalid number of arguments: " + argText);
15501 }
15502
15503 numArgs = parseInt(argText);
15504 arg = context.consumeArg().tokens;
15505 } // Final arg is the expansion of the macro
15506
15507
15508 context.macros.set(name, {
15509 tokens: arg,
15510 numArgs: numArgs
15511 });
15512 return '';
15513};
15514
15515defineMacro("\\newcommand", function (context) {
15516 return newcommand(context, false, true);
15517});
15518defineMacro("\\renewcommand", function (context) {
15519 return newcommand(context, true, false);
15520});
15521defineMacro("\\providecommand", function (context) {
15522 return newcommand(context, true, true);
15523}); // terminal (console) tools
15524
15525defineMacro("\\message", function (context) {
15526 var arg = context.consumeArgs(1)[0]; // eslint-disable-next-line no-console
15527
15528 console.log(arg.reverse().map(function (token) {
15529 return token.text;
15530 }).join(""));
15531 return '';
15532});
15533defineMacro("\\errmessage", function (context) {
15534 var arg = context.consumeArgs(1)[0]; // eslint-disable-next-line no-console
15535
15536 console.error(arg.reverse().map(function (token) {
15537 return token.text;
15538 }).join(""));
15539 return '';
15540});
15541defineMacro("\\show", function (context) {
15542 var tok = context.popToken();
15543 var name = tok.text; // eslint-disable-next-line no-console
15544
15545 console.log(tok, context.macros.get(name), src_functions[name], src_symbols.math[name], src_symbols.text[name]);
15546 return '';
15547}); //////////////////////////////////////////////////////////////////////
15548// Grouping
15549// \let\bgroup={ \let\egroup=}
15550
15551defineMacro("\\bgroup", "{");
15552defineMacro("\\egroup", "}"); // Symbols from latex.ltx:
15553// \def~{\nobreakspace{}}
15554// \def\lq{`}
15555// \def\rq{'}
15556// \def \aa {\r a}
15557// \def \AA {\r A}
15558
15559defineMacro("~", "\\nobreakspace");
15560defineMacro("\\lq", "`");
15561defineMacro("\\rq", "'");
15562defineMacro("\\aa", "\\r a");
15563defineMacro("\\AA", "\\r A"); // Copyright (C) and registered (R) symbols. Use raw symbol in MathML.
15564// \DeclareTextCommandDefault{\textcopyright}{\textcircled{c}}
15565// \DeclareTextCommandDefault{\textregistered}{\textcircled{%
15566// \check@mathfonts\fontsize\sf@size\z@\math@fontsfalse\selectfont R}}
15567// \DeclareRobustCommand{\copyright}{%
15568// \ifmmode{\nfss@text{\textcopyright}}\else\textcopyright\fi}
15569
15570defineMacro("\\textcopyright", "\\html@mathml{\\textcircled{c}}{\\char`©}");
15571defineMacro("\\copyright", "\\TextOrMath{\\textcopyright}{\\text{\\textcopyright}}");
15572defineMacro("\\textregistered", "\\html@mathml{\\textcircled{\\scriptsize R}}{\\char`®}"); // Characters omitted from Unicode range 1D400–1D7FF
15573
15574defineMacro("\u212C", "\\mathscr{B}"); // script
15575
15576defineMacro("\u2130", "\\mathscr{E}");
15577defineMacro("\u2131", "\\mathscr{F}");
15578defineMacro("\u210B", "\\mathscr{H}");
15579defineMacro("\u2110", "\\mathscr{I}");
15580defineMacro("\u2112", "\\mathscr{L}");
15581defineMacro("\u2133", "\\mathscr{M}");
15582defineMacro("\u211B", "\\mathscr{R}");
15583defineMacro("\u212D", "\\mathfrak{C}"); // Fraktur
15584
15585defineMacro("\u210C", "\\mathfrak{H}");
15586defineMacro("\u2128", "\\mathfrak{Z}"); // Define \Bbbk with a macro that works in both HTML and MathML.
15587
15588defineMacro("\\Bbbk", "\\Bbb{k}"); // Unicode middle dot
15589// The KaTeX fonts do not contain U+00B7. Instead, \cdotp displays
15590// the dot at U+22C5 and gives it punct spacing.
15591
15592defineMacro("\xB7", "\\cdotp"); // \llap and \rlap render their contents in text mode
15593
15594defineMacro("\\llap", "\\mathllap{\\textrm{#1}}");
15595defineMacro("\\rlap", "\\mathrlap{\\textrm{#1}}");
15596defineMacro("\\clap", "\\mathclap{\\textrm{#1}}"); // \mathstrut from the TeXbook, p 360
15597
15598defineMacro("\\mathstrut", "\\vphantom{(}"); // \underbar from TeXbook p 353
15599
15600defineMacro("\\underbar", "\\underline{\\text{#1}}"); // \not is defined by base/fontmath.ltx via
15601// \DeclareMathSymbol{\not}{\mathrel}{symbols}{"36}
15602// It's thus treated like a \mathrel, but defined by a symbol that has zero
15603// width but extends to the right. We use \rlap to get that spacing.
15604// For MathML we write U+0338 here. buildMathML.js will then do the overlay.
15605
15606defineMacro("\\not", '\\html@mathml{\\mathrel{\\mathrlap\\@not}}{\\char"338}'); // Negated symbols from base/fontmath.ltx:
15607// \def\neq{\not=} \let\ne=\neq
15608// \DeclareRobustCommand
15609// \notin{\mathrel{\m@th\mathpalette\c@ncel\in}}
15610// \def\c@ncel#1#2{\m@th\ooalign{$\hfil#1\mkern1mu/\hfil$\crcr$#1#2$}}
15611
15612defineMacro("\\neq", "\\html@mathml{\\mathrel{\\not=}}{\\mathrel{\\char`≠}}");
15613defineMacro("\\ne", "\\neq");
15614defineMacro("\u2260", "\\neq");
15615defineMacro("\\notin", "\\html@mathml{\\mathrel{{\\in}\\mathllap{/\\mskip1mu}}}" + "{\\mathrel{\\char`∉}}");
15616defineMacro("\u2209", "\\notin"); // Unicode stacked relations
15617
15618defineMacro("\u2258", "\\html@mathml{" + "\\mathrel{=\\kern{-1em}\\raisebox{0.4em}{$\\scriptsize\\frown$}}" + "}{\\mathrel{\\char`\u2258}}");
15619defineMacro("\u2259", "\\html@mathml{\\stackrel{\\tiny\\wedge}{=}}{\\mathrel{\\char`\u2258}}");
15620defineMacro("\u225A", "\\html@mathml{\\stackrel{\\tiny\\vee}{=}}{\\mathrel{\\char`\u225A}}");
15621defineMacro("\u225B", "\\html@mathml{\\stackrel{\\scriptsize\\star}{=}}" + "{\\mathrel{\\char`\u225B}}");
15622defineMacro("\u225D", "\\html@mathml{\\stackrel{\\tiny\\mathrm{def}}{=}}" + "{\\mathrel{\\char`\u225D}}");
15623defineMacro("\u225E", "\\html@mathml{\\stackrel{\\tiny\\mathrm{m}}{=}}" + "{\\mathrel{\\char`\u225E}}");
15624defineMacro("\u225F", "\\html@mathml{\\stackrel{\\tiny?}{=}}{\\mathrel{\\char`\u225F}}"); // Misc Unicode
15625
15626defineMacro("\u27C2", "\\perp");
15627defineMacro("\u203C", "\\mathclose{!\\mkern-0.8mu!}");
15628defineMacro("\u220C", "\\notni");
15629defineMacro("\u231C", "\\ulcorner");
15630defineMacro("\u231D", "\\urcorner");
15631defineMacro("\u231E", "\\llcorner");
15632defineMacro("\u231F", "\\lrcorner");
15633defineMacro("\xA9", "\\copyright");
15634defineMacro("\xAE", "\\textregistered");
15635defineMacro("\uFE0F", "\\textregistered"); // The KaTeX fonts have corners at codepoints that don't match Unicode.
15636// For MathML purposes, use the Unicode code point.
15637
15638defineMacro("\\ulcorner", "\\html@mathml{\\@ulcorner}{\\mathop{\\char\"231c}}");
15639defineMacro("\\urcorner", "\\html@mathml{\\@urcorner}{\\mathop{\\char\"231d}}");
15640defineMacro("\\llcorner", "\\html@mathml{\\@llcorner}{\\mathop{\\char\"231e}}");
15641defineMacro("\\lrcorner", "\\html@mathml{\\@lrcorner}{\\mathop{\\char\"231f}}"); //////////////////////////////////////////////////////////////////////
15642// LaTeX_2ε
15643// \vdots{\vbox{\baselineskip4\p@ \lineskiplimit\z@
15644// \kern6\p@\hbox{.}\hbox{.}\hbox{.}}}
15645// We'll call \varvdots, which gets a glyph from symbols.js.
15646// The zero-width rule gets us an equivalent to the vertical 6pt kern.
15647
15648defineMacro("\\vdots", "\\mathord{\\varvdots\\rule{0pt}{15pt}}");
15649defineMacro("\u22EE", "\\vdots"); //////////////////////////////////////////////////////////////////////
15650// amsmath.sty
15651// http://mirrors.concertpass.com/tex-archive/macros/latex/required/amsmath/amsmath.pdf
15652// Italic Greek capital letters. AMS defines these with \DeclareMathSymbol,
15653// but they are equivalent to \mathit{\Letter}.
15654
15655defineMacro("\\varGamma", "\\mathit{\\Gamma}");
15656defineMacro("\\varDelta", "\\mathit{\\Delta}");
15657defineMacro("\\varTheta", "\\mathit{\\Theta}");
15658defineMacro("\\varLambda", "\\mathit{\\Lambda}");
15659defineMacro("\\varXi", "\\mathit{\\Xi}");
15660defineMacro("\\varPi", "\\mathit{\\Pi}");
15661defineMacro("\\varSigma", "\\mathit{\\Sigma}");
15662defineMacro("\\varUpsilon", "\\mathit{\\Upsilon}");
15663defineMacro("\\varPhi", "\\mathit{\\Phi}");
15664defineMacro("\\varPsi", "\\mathit{\\Psi}");
15665defineMacro("\\varOmega", "\\mathit{\\Omega}"); //\newcommand{\substack}[1]{\subarray{c}#1\endsubarray}
15666
15667defineMacro("\\substack", "\\begin{subarray}{c}#1\\end{subarray}"); // \renewcommand{\colon}{\nobreak\mskip2mu\mathpunct{}\nonscript
15668// \mkern-\thinmuskip{:}\mskip6muplus1mu\relax}
15669
15670defineMacro("\\colon", "\\nobreak\\mskip2mu\\mathpunct{}" + "\\mathchoice{\\mkern-3mu}{\\mkern-3mu}{}{}{:}\\mskip6mu\\relax"); // \newcommand{\boxed}[1]{\fbox{\m@th$\displaystyle#1$}}
15671
15672defineMacro("\\boxed", "\\fbox{$\\displaystyle{#1}$}"); // \def\iff{\DOTSB\;\Longleftrightarrow\;}
15673// \def\implies{\DOTSB\;\Longrightarrow\;}
15674// \def\impliedby{\DOTSB\;\Longleftarrow\;}
15675
15676defineMacro("\\iff", "\\DOTSB\\;\\Longleftrightarrow\\;");
15677defineMacro("\\implies", "\\DOTSB\\;\\Longrightarrow\\;");
15678defineMacro("\\impliedby", "\\DOTSB\\;\\Longleftarrow\\;"); // AMSMath's automatic \dots, based on \mdots@@ macro.
15679
15680var dotsByToken = {
15681 ',': '\\dotsc',
15682 '\\not': '\\dotsb',
15683 // \keybin@ checks for the following:
15684 '+': '\\dotsb',
15685 '=': '\\dotsb',
15686 '<': '\\dotsb',
15687 '>': '\\dotsb',
15688 '-': '\\dotsb',
15689 '*': '\\dotsb',
15690 ':': '\\dotsb',
15691 // Symbols whose definition starts with \DOTSB:
15692 '\\DOTSB': '\\dotsb',
15693 '\\coprod': '\\dotsb',
15694 '\\bigvee': '\\dotsb',
15695 '\\bigwedge': '\\dotsb',
15696 '\\biguplus': '\\dotsb',
15697 '\\bigcap': '\\dotsb',
15698 '\\bigcup': '\\dotsb',
15699 '\\prod': '\\dotsb',
15700 '\\sum': '\\dotsb',
15701 '\\bigotimes': '\\dotsb',
15702 '\\bigoplus': '\\dotsb',
15703 '\\bigodot': '\\dotsb',
15704 '\\bigsqcup': '\\dotsb',
15705 '\\And': '\\dotsb',
15706 '\\longrightarrow': '\\dotsb',
15707 '\\Longrightarrow': '\\dotsb',
15708 '\\longleftarrow': '\\dotsb',
15709 '\\Longleftarrow': '\\dotsb',
15710 '\\longleftrightarrow': '\\dotsb',
15711 '\\Longleftrightarrow': '\\dotsb',
15712 '\\mapsto': '\\dotsb',
15713 '\\longmapsto': '\\dotsb',
15714 '\\hookrightarrow': '\\dotsb',
15715 '\\doteq': '\\dotsb',
15716 // Symbols whose definition starts with \mathbin:
15717 '\\mathbin': '\\dotsb',
15718 // Symbols whose definition starts with \mathrel:
15719 '\\mathrel': '\\dotsb',
15720 '\\relbar': '\\dotsb',
15721 '\\Relbar': '\\dotsb',
15722 '\\xrightarrow': '\\dotsb',
15723 '\\xleftarrow': '\\dotsb',
15724 // Symbols whose definition starts with \DOTSI:
15725 '\\DOTSI': '\\dotsi',
15726 '\\int': '\\dotsi',
15727 '\\oint': '\\dotsi',
15728 '\\iint': '\\dotsi',
15729 '\\iiint': '\\dotsi',
15730 '\\iiiint': '\\dotsi',
15731 '\\idotsint': '\\dotsi',
15732 // Symbols whose definition starts with \DOTSX:
15733 '\\DOTSX': '\\dotsx'
15734};
15735defineMacro("\\dots", function (context) {
15736 // TODO: If used in text mode, should expand to \textellipsis.
15737 // However, in KaTeX, \textellipsis and \ldots behave the same
15738 // (in text mode), and it's unlikely we'd see any of the math commands
15739 // that affect the behavior of \dots when in text mode. So fine for now
15740 // (until we support \ifmmode ... \else ... \fi).
15741 var thedots = '\\dotso';
15742 var next = context.expandAfterFuture().text;
15743
15744 if (next in dotsByToken) {
15745 thedots = dotsByToken[next];
15746 } else if (next.substr(0, 4) === '\\not') {
15747 thedots = '\\dotsb';
15748 } else if (next in src_symbols.math) {
15749 if (utils.contains(['bin', 'rel'], src_symbols.math[next].group)) {
15750 thedots = '\\dotsb';
15751 }
15752 }
15753
15754 return thedots;
15755});
15756var spaceAfterDots = {
15757 // \rightdelim@ checks for the following:
15758 ')': true,
15759 ']': true,
15760 '\\rbrack': true,
15761 '\\}': true,
15762 '\\rbrace': true,
15763 '\\rangle': true,
15764 '\\rceil': true,
15765 '\\rfloor': true,
15766 '\\rgroup': true,
15767 '\\rmoustache': true,
15768 '\\right': true,
15769 '\\bigr': true,
15770 '\\biggr': true,
15771 '\\Bigr': true,
15772 '\\Biggr': true,
15773 // \extra@ also tests for the following:
15774 '$': true,
15775 // \extrap@ checks for the following:
15776 ';': true,
15777 '.': true,
15778 ',': true
15779};
15780defineMacro("\\dotso", function (context) {
15781 var next = context.future().text;
15782
15783 if (next in spaceAfterDots) {
15784 return "\\ldots\\,";
15785 } else {
15786 return "\\ldots";
15787 }
15788});
15789defineMacro("\\dotsc", function (context) {
15790 var next = context.future().text; // \dotsc uses \extra@ but not \extrap@, instead specially checking for
15791 // ';' and '.', but doesn't check for ','.
15792
15793 if (next in spaceAfterDots && next !== ',') {
15794 return "\\ldots\\,";
15795 } else {
15796 return "\\ldots";
15797 }
15798});
15799defineMacro("\\cdots", function (context) {
15800 var next = context.future().text;
15801
15802 if (next in spaceAfterDots) {
15803 return "\\@cdots\\,";
15804 } else {
15805 return "\\@cdots";
15806 }
15807});
15808defineMacro("\\dotsb", "\\cdots");
15809defineMacro("\\dotsm", "\\cdots");
15810defineMacro("\\dotsi", "\\!\\cdots"); // amsmath doesn't actually define \dotsx, but \dots followed by a macro
15811// starting with \DOTSX implies \dotso, and then \extra@ detects this case
15812// and forces the added `\,`.
15813
15814defineMacro("\\dotsx", "\\ldots\\,"); // \let\DOTSI\relax
15815// \let\DOTSB\relax
15816// \let\DOTSX\relax
15817
15818defineMacro("\\DOTSI", "\\relax");
15819defineMacro("\\DOTSB", "\\relax");
15820defineMacro("\\DOTSX", "\\relax"); // Spacing, based on amsmath.sty's override of LaTeX defaults
15821// \DeclareRobustCommand{\tmspace}[3]{%
15822// \ifmmode\mskip#1#2\else\kern#1#3\fi\relax}
15823
15824defineMacro("\\tmspace", "\\TextOrMath{\\kern#1#3}{\\mskip#1#2}\\relax"); // \renewcommand{\,}{\tmspace+\thinmuskip{.1667em}}
15825// TODO: math mode should use \thinmuskip
15826
15827defineMacro("\\,", "\\tmspace+{3mu}{.1667em}"); // \let\thinspace\,
15828
15829defineMacro("\\thinspace", "\\,"); // \def\>{\mskip\medmuskip}
15830// \renewcommand{\:}{\tmspace+\medmuskip{.2222em}}
15831// TODO: \> and math mode of \: should use \medmuskip = 4mu plus 2mu minus 4mu
15832
15833defineMacro("\\>", "\\mskip{4mu}");
15834defineMacro("\\:", "\\tmspace+{4mu}{.2222em}"); // \let\medspace\:
15835
15836defineMacro("\\medspace", "\\:"); // \renewcommand{\;}{\tmspace+\thickmuskip{.2777em}}
15837// TODO: math mode should use \thickmuskip = 5mu plus 5mu
15838
15839defineMacro("\\;", "\\tmspace+{5mu}{.2777em}"); // \let\thickspace\;
15840
15841defineMacro("\\thickspace", "\\;"); // \renewcommand{\!}{\tmspace-\thinmuskip{.1667em}}
15842// TODO: math mode should use \thinmuskip
15843
15844defineMacro("\\!", "\\tmspace-{3mu}{.1667em}"); // \let\negthinspace\!
15845
15846defineMacro("\\negthinspace", "\\!"); // \newcommand{\negmedspace}{\tmspace-\medmuskip{.2222em}}
15847// TODO: math mode should use \medmuskip
15848
15849defineMacro("\\negmedspace", "\\tmspace-{4mu}{.2222em}"); // \newcommand{\negthickspace}{\tmspace-\thickmuskip{.2777em}}
15850// TODO: math mode should use \thickmuskip
15851
15852defineMacro("\\negthickspace", "\\tmspace-{5mu}{.277em}"); // \def\enspace{\kern.5em }
15853
15854defineMacro("\\enspace", "\\kern.5em "); // \def\enskip{\hskip.5em\relax}
15855
15856defineMacro("\\enskip", "\\hskip.5em\\relax"); // \def\quad{\hskip1em\relax}
15857
15858defineMacro("\\quad", "\\hskip1em\\relax"); // \def\qquad{\hskip2em\relax}
15859
15860defineMacro("\\qquad", "\\hskip2em\\relax"); // \tag@in@display form of \tag
15861
15862defineMacro("\\tag", "\\@ifstar\\tag@literal\\tag@paren");
15863defineMacro("\\tag@paren", "\\tag@literal{({#1})}");
15864defineMacro("\\tag@literal", function (context) {
15865 if (context.macros.get("\\df@tag")) {
15866 throw new src_ParseError("Multiple \\tag");
15867 }
15868
15869 return "\\gdef\\df@tag{\\text{#1}}";
15870}); // \renewcommand{\bmod}{\nonscript\mskip-\medmuskip\mkern5mu\mathbin
15871// {\operator@font mod}\penalty900
15872// \mkern5mu\nonscript\mskip-\medmuskip}
15873// \newcommand{\pod}[1]{\allowbreak
15874// \if@display\mkern18mu\else\mkern8mu\fi(#1)}
15875// \renewcommand{\pmod}[1]{\pod{{\operator@font mod}\mkern6mu#1}}
15876// \newcommand{\mod}[1]{\allowbreak\if@display\mkern18mu
15877// \else\mkern12mu\fi{\operator@font mod}\,\,#1}
15878// TODO: math mode should use \medmuskip = 4mu plus 2mu minus 4mu
15879
15880defineMacro("\\bmod", "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}" + "\\mathbin{\\rm mod}" + "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}");
15881defineMacro("\\pod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern8mu}{\\mkern8mu}{\\mkern8mu}(#1)");
15882defineMacro("\\pmod", "\\pod{{\\rm mod}\\mkern6mu#1}");
15883defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); // \pmb -- A simulation of bold.
15884// The version in ambsy.sty works by typesetting three copies of the argument
15885// with small offsets. We use two copies. We omit the vertical offset because
15886// of rendering problems that makeVList encounters in Safari.
15887
15888defineMacro("\\pmb", "\\html@mathml{" + "\\@binrel{#1}{\\mathrlap{#1}\\kern0.5px#1}}" + "{\\mathbf{#1}}"); //////////////////////////////////////////////////////////////////////
15889// LaTeX source2e
15890// \expandafter\let\expandafter\@normalcr
15891// \csname\expandafter\@gobble\string\\ \endcsname
15892// \DeclareRobustCommand\newline{\@normalcr\relax}
15893
15894defineMacro("\\newline", "\\\\\\relax"); // \def\TeX{T\kern-.1667em\lower.5ex\hbox{E}\kern-.125emX\@}
15895// TODO: Doesn't normally work in math mode because \@ fails. KaTeX doesn't
15896// support \@ yet, so that's omitted, and we add \text so that the result
15897// doesn't look funny in math mode.
15898
15899defineMacro("\\TeX", "\\textrm{\\html@mathml{" + "T\\kern-.1667em\\raisebox{-.5ex}{E}\\kern-.125emX" + "}{TeX}}"); // \DeclareRobustCommand{\LaTeX}{L\kern-.36em%
15900// {\sbox\z@ T%
15901// \vbox to\ht\z@{\hbox{\check@mathfonts
15902// \fontsize\sf@size\z@
15903// \math@fontsfalse\selectfont
15904// A}%
15905// \vss}%
15906// }%
15907// \kern-.15em%
15908// \TeX}
15909// This code aligns the top of the A with the T (from the perspective of TeX's
15910// boxes, though visually the A appears to extend above slightly).
15911// We compute the corresponding \raisebox when A is rendered in \normalsize
15912// \scriptstyle, which has a scale factor of 0.7 (see Options.js).
15913
15914var latexRaiseA = makeEm(fontMetricsData["Main-Regular"]["T".charCodeAt(0)][1] - 0.7 * fontMetricsData["Main-Regular"]["A".charCodeAt(0)][1]);
15915defineMacro("\\LaTeX", "\\textrm{\\html@mathml{" + ("L\\kern-.36em\\raisebox{" + latexRaiseA + "}{\\scriptstyle A}") + "\\kern-.15em\\TeX}{LaTeX}}"); // New KaTeX logo based on tweaking LaTeX logo
15916
15917defineMacro("\\KaTeX", "\\textrm{\\html@mathml{" + ("K\\kern-.17em\\raisebox{" + latexRaiseA + "}{\\scriptstyle A}") + "\\kern-.15em\\TeX}{KaTeX}}"); // \DeclareRobustCommand\hspace{\@ifstar\@hspacer\@hspace}
15918// \def\@hspace#1{\hskip #1\relax}
15919// \def\@hspacer#1{\vrule \@width\z@\nobreak
15920// \hskip #1\hskip \z@skip}
15921
15922defineMacro("\\hspace", "\\@ifstar\\@hspacer\\@hspace");
15923defineMacro("\\@hspace", "\\hskip #1\\relax");
15924defineMacro("\\@hspacer", "\\rule{0pt}{0pt}\\hskip #1\\relax"); //////////////////////////////////////////////////////////////////////
15925// mathtools.sty
15926//\providecommand\ordinarycolon{:}
15927
15928defineMacro("\\ordinarycolon", ":"); //\def\vcentcolon{\mathrel{\mathop\ordinarycolon}}
15929//TODO(edemaine): Not yet centered. Fix via \raisebox or #726
15930
15931defineMacro("\\vcentcolon", "\\mathrel{\\mathop\\ordinarycolon}"); // \providecommand*\dblcolon{\vcentcolon\mathrel{\mkern-.9mu}\vcentcolon}
15932
15933defineMacro("\\dblcolon", "\\html@mathml{" + "\\mathrel{\\vcentcolon\\mathrel{\\mkern-.9mu}\\vcentcolon}}" + "{\\mathop{\\char\"2237}}"); // \providecommand*\coloneqq{\vcentcolon\mathrel{\mkern-1.2mu}=}
15934
15935defineMacro("\\coloneqq", "\\html@mathml{" + "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}=}}" + "{\\mathop{\\char\"2254}}"); // ≔
15936// \providecommand*\Coloneqq{\dblcolon\mathrel{\mkern-1.2mu}=}
15937
15938defineMacro("\\Coloneqq", "\\html@mathml{" + "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}=}}" + "{\\mathop{\\char\"2237\\char\"3d}}"); // \providecommand*\coloneq{\vcentcolon\mathrel{\mkern-1.2mu}\mathrel{-}}
15939
15940defineMacro("\\coloneq", "\\html@mathml{" + "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\mathrel{-}}}" + "{\\mathop{\\char\"3a\\char\"2212}}"); // \providecommand*\Coloneq{\dblcolon\mathrel{\mkern-1.2mu}\mathrel{-}}
15941
15942defineMacro("\\Coloneq", "\\html@mathml{" + "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\mathrel{-}}}" + "{\\mathop{\\char\"2237\\char\"2212}}"); // \providecommand*\eqqcolon{=\mathrel{\mkern-1.2mu}\vcentcolon}
15943
15944defineMacro("\\eqqcolon", "\\html@mathml{" + "\\mathrel{=\\mathrel{\\mkern-1.2mu}\\vcentcolon}}" + "{\\mathop{\\char\"2255}}"); // ≕
15945// \providecommand*\Eqqcolon{=\mathrel{\mkern-1.2mu}\dblcolon}
15946
15947defineMacro("\\Eqqcolon", "\\html@mathml{" + "\\mathrel{=\\mathrel{\\mkern-1.2mu}\\dblcolon}}" + "{\\mathop{\\char\"3d\\char\"2237}}"); // \providecommand*\eqcolon{\mathrel{-}\mathrel{\mkern-1.2mu}\vcentcolon}
15948
15949defineMacro("\\eqcolon", "\\html@mathml{" + "\\mathrel{\\mathrel{-}\\mathrel{\\mkern-1.2mu}\\vcentcolon}}" + "{\\mathop{\\char\"2239}}"); // \providecommand*\Eqcolon{\mathrel{-}\mathrel{\mkern-1.2mu}\dblcolon}
15950
15951defineMacro("\\Eqcolon", "\\html@mathml{" + "\\mathrel{\\mathrel{-}\\mathrel{\\mkern-1.2mu}\\dblcolon}}" + "{\\mathop{\\char\"2212\\char\"2237}}"); // \providecommand*\colonapprox{\vcentcolon\mathrel{\mkern-1.2mu}\approx}
15952
15953defineMacro("\\colonapprox", "\\html@mathml{" + "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\approx}}" + "{\\mathop{\\char\"3a\\char\"2248}}"); // \providecommand*\Colonapprox{\dblcolon\mathrel{\mkern-1.2mu}\approx}
15954
15955defineMacro("\\Colonapprox", "\\html@mathml{" + "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\approx}}" + "{\\mathop{\\char\"2237\\char\"2248}}"); // \providecommand*\colonsim{\vcentcolon\mathrel{\mkern-1.2mu}\sim}
15956
15957defineMacro("\\colonsim", "\\html@mathml{" + "\\mathrel{\\vcentcolon\\mathrel{\\mkern-1.2mu}\\sim}}" + "{\\mathop{\\char\"3a\\char\"223c}}"); // \providecommand*\Colonsim{\dblcolon\mathrel{\mkern-1.2mu}\sim}
15958
15959defineMacro("\\Colonsim", "\\html@mathml{" + "\\mathrel{\\dblcolon\\mathrel{\\mkern-1.2mu}\\sim}}" + "{\\mathop{\\char\"2237\\char\"223c}}"); // Some Unicode characters are implemented with macros to mathtools functions.
15960
15961defineMacro("\u2237", "\\dblcolon"); // ::
15962
15963defineMacro("\u2239", "\\eqcolon"); // -:
15964
15965defineMacro("\u2254", "\\coloneqq"); // :=
15966
15967defineMacro("\u2255", "\\eqqcolon"); // =:
15968
15969defineMacro("\u2A74", "\\Coloneqq"); // ::=
15970//////////////////////////////////////////////////////////////////////
15971// colonequals.sty
15972// Alternate names for mathtools's macros:
15973
15974defineMacro("\\ratio", "\\vcentcolon");
15975defineMacro("\\coloncolon", "\\dblcolon");
15976defineMacro("\\colonequals", "\\coloneqq");
15977defineMacro("\\coloncolonequals", "\\Coloneqq");
15978defineMacro("\\equalscolon", "\\eqqcolon");
15979defineMacro("\\equalscoloncolon", "\\Eqqcolon");
15980defineMacro("\\colonminus", "\\coloneq");
15981defineMacro("\\coloncolonminus", "\\Coloneq");
15982defineMacro("\\minuscolon", "\\eqcolon");
15983defineMacro("\\minuscoloncolon", "\\Eqcolon"); // \colonapprox name is same in mathtools and colonequals.
15984
15985defineMacro("\\coloncolonapprox", "\\Colonapprox"); // \colonsim name is same in mathtools and colonequals.
15986
15987defineMacro("\\coloncolonsim", "\\Colonsim"); // Additional macros, implemented by analogy with mathtools definitions:
15988
15989defineMacro("\\simcolon", "\\mathrel{\\sim\\mathrel{\\mkern-1.2mu}\\vcentcolon}");
15990defineMacro("\\simcoloncolon", "\\mathrel{\\sim\\mathrel{\\mkern-1.2mu}\\dblcolon}");
15991defineMacro("\\approxcolon", "\\mathrel{\\approx\\mathrel{\\mkern-1.2mu}\\vcentcolon}");
15992defineMacro("\\approxcoloncolon", "\\mathrel{\\approx\\mathrel{\\mkern-1.2mu}\\dblcolon}"); // Present in newtxmath, pxfonts and txfonts
15993
15994defineMacro("\\notni", "\\html@mathml{\\not\\ni}{\\mathrel{\\char`\u220C}}");
15995defineMacro("\\limsup", "\\DOTSB\\operatorname*{lim\\,sup}");
15996defineMacro("\\liminf", "\\DOTSB\\operatorname*{lim\\,inf}"); //////////////////////////////////////////////////////////////////////
15997// From amsopn.sty
15998
15999defineMacro("\\injlim", "\\DOTSB\\operatorname*{inj\\,lim}");
16000defineMacro("\\projlim", "\\DOTSB\\operatorname*{proj\\,lim}");
16001defineMacro("\\varlimsup", "\\DOTSB\\operatorname*{\\overline{lim}}");
16002defineMacro("\\varliminf", "\\DOTSB\\operatorname*{\\underline{lim}}");
16003defineMacro("\\varinjlim", "\\DOTSB\\operatorname*{\\underrightarrow{lim}}");
16004defineMacro("\\varprojlim", "\\DOTSB\\operatorname*{\\underleftarrow{lim}}"); //////////////////////////////////////////////////////////////////////
16005// MathML alternates for KaTeX glyphs in the Unicode private area
16006
16007defineMacro("\\gvertneqq", "\\html@mathml{\\@gvertneqq}{\u2269}");
16008defineMacro("\\lvertneqq", "\\html@mathml{\\@lvertneqq}{\u2268}");
16009defineMacro("\\ngeqq", "\\html@mathml{\\@ngeqq}{\u2271}");
16010defineMacro("\\ngeqslant", "\\html@mathml{\\@ngeqslant}{\u2271}");
16011defineMacro("\\nleqq", "\\html@mathml{\\@nleqq}{\u2270}");
16012defineMacro("\\nleqslant", "\\html@mathml{\\@nleqslant}{\u2270}");
16013defineMacro("\\nshortmid", "\\html@mathml{\\@nshortmid}{∤}");
16014defineMacro("\\nshortparallel", "\\html@mathml{\\@nshortparallel}{∦}");
16015defineMacro("\\nsubseteqq", "\\html@mathml{\\@nsubseteqq}{\u2288}");
16016defineMacro("\\nsupseteqq", "\\html@mathml{\\@nsupseteqq}{\u2289}");
16017defineMacro("\\varsubsetneq", "\\html@mathml{\\@varsubsetneq}{⊊}");
16018defineMacro("\\varsubsetneqq", "\\html@mathml{\\@varsubsetneqq}{⫋}");
16019defineMacro("\\varsupsetneq", "\\html@mathml{\\@varsupsetneq}{⊋}");
16020defineMacro("\\varsupsetneqq", "\\html@mathml{\\@varsupsetneqq}{⫌}");
16021defineMacro("\\imath", "\\html@mathml{\\@imath}{\u0131}");
16022defineMacro("\\jmath", "\\html@mathml{\\@jmath}{\u0237}"); //////////////////////////////////////////////////////////////////////
16023// stmaryrd and semantic
16024// The stmaryrd and semantic packages render the next four items by calling a
16025// glyph. Those glyphs do not exist in the KaTeX fonts. Hence the macros.
16026
16027defineMacro("\\llbracket", "\\html@mathml{" + "\\mathopen{[\\mkern-3.2mu[}}" + "{\\mathopen{\\char`\u27E6}}");
16028defineMacro("\\rrbracket", "\\html@mathml{" + "\\mathclose{]\\mkern-3.2mu]}}" + "{\\mathclose{\\char`\u27E7}}");
16029defineMacro("\u27E6", "\\llbracket"); // blackboard bold [
16030
16031defineMacro("\u27E7", "\\rrbracket"); // blackboard bold ]
16032
16033defineMacro("\\lBrace", "\\html@mathml{" + "\\mathopen{\\{\\mkern-3.2mu[}}" + "{\\mathopen{\\char`\u2983}}");
16034defineMacro("\\rBrace", "\\html@mathml{" + "\\mathclose{]\\mkern-3.2mu\\}}}" + "{\\mathclose{\\char`\u2984}}");
16035defineMacro("\u2983", "\\lBrace"); // blackboard bold {
16036
16037defineMacro("\u2984", "\\rBrace"); // blackboard bold }
16038// TODO: Create variable sized versions of the last two items. I believe that
16039// will require new font glyphs.
16040// The stmaryrd function `\minuso` provides a "Plimsoll" symbol that
16041// superimposes the characters \circ and \mathminus. Used in chemistry.
16042
16043defineMacro("\\minuso", "\\mathbin{\\html@mathml{" + "{\\mathrlap{\\mathchoice{\\kern{0.145em}}{\\kern{0.145em}}" + "{\\kern{0.1015em}}{\\kern{0.0725em}}\\circ}{-}}}" + "{\\char`⦵}}");
16044defineMacro("⦵", "\\minuso"); //////////////////////////////////////////////////////////////////////
16045// texvc.sty
16046// The texvc package contains macros available in mediawiki pages.
16047// We omit the functions deprecated at
16048// https://en.wikipedia.org/wiki/Help:Displaying_a_formula#Deprecated_syntax
16049// We also omit texvc's \O, which conflicts with \text{\O}
16050
16051defineMacro("\\darr", "\\downarrow");
16052defineMacro("\\dArr", "\\Downarrow");
16053defineMacro("\\Darr", "\\Downarrow");
16054defineMacro("\\lang", "\\langle");
16055defineMacro("\\rang", "\\rangle");
16056defineMacro("\\uarr", "\\uparrow");
16057defineMacro("\\uArr", "\\Uparrow");
16058defineMacro("\\Uarr", "\\Uparrow");
16059defineMacro("\\N", "\\mathbb{N}");
16060defineMacro("\\R", "\\mathbb{R}");
16061defineMacro("\\Z", "\\mathbb{Z}");
16062defineMacro("\\alef", "\\aleph");
16063defineMacro("\\alefsym", "\\aleph");
16064defineMacro("\\Alpha", "\\mathrm{A}");
16065defineMacro("\\Beta", "\\mathrm{B}");
16066defineMacro("\\bull", "\\bullet");
16067defineMacro("\\Chi", "\\mathrm{X}");
16068defineMacro("\\clubs", "\\clubsuit");
16069defineMacro("\\cnums", "\\mathbb{C}");
16070defineMacro("\\Complex", "\\mathbb{C}");
16071defineMacro("\\Dagger", "\\ddagger");
16072defineMacro("\\diamonds", "\\diamondsuit");
16073defineMacro("\\empty", "\\emptyset");
16074defineMacro("\\Epsilon", "\\mathrm{E}");
16075defineMacro("\\Eta", "\\mathrm{H}");
16076defineMacro("\\exist", "\\exists");
16077defineMacro("\\harr", "\\leftrightarrow");
16078defineMacro("\\hArr", "\\Leftrightarrow");
16079defineMacro("\\Harr", "\\Leftrightarrow");
16080defineMacro("\\hearts", "\\heartsuit");
16081defineMacro("\\image", "\\Im");
16082defineMacro("\\infin", "\\infty");
16083defineMacro("\\Iota", "\\mathrm{I}");
16084defineMacro("\\isin", "\\in");
16085defineMacro("\\Kappa", "\\mathrm{K}");
16086defineMacro("\\larr", "\\leftarrow");
16087defineMacro("\\lArr", "\\Leftarrow");
16088defineMacro("\\Larr", "\\Leftarrow");
16089defineMacro("\\lrarr", "\\leftrightarrow");
16090defineMacro("\\lrArr", "\\Leftrightarrow");
16091defineMacro("\\Lrarr", "\\Leftrightarrow");
16092defineMacro("\\Mu", "\\mathrm{M}");
16093defineMacro("\\natnums", "\\mathbb{N}");
16094defineMacro("\\Nu", "\\mathrm{N}");
16095defineMacro("\\Omicron", "\\mathrm{O}");
16096defineMacro("\\plusmn", "\\pm");
16097defineMacro("\\rarr", "\\rightarrow");
16098defineMacro("\\rArr", "\\Rightarrow");
16099defineMacro("\\Rarr", "\\Rightarrow");
16100defineMacro("\\real", "\\Re");
16101defineMacro("\\reals", "\\mathbb{R}");
16102defineMacro("\\Reals", "\\mathbb{R}");
16103defineMacro("\\Rho", "\\mathrm{P}");
16104defineMacro("\\sdot", "\\cdot");
16105defineMacro("\\sect", "\\S");
16106defineMacro("\\spades", "\\spadesuit");
16107defineMacro("\\sub", "\\subset");
16108defineMacro("\\sube", "\\subseteq");
16109defineMacro("\\supe", "\\supseteq");
16110defineMacro("\\Tau", "\\mathrm{T}");
16111defineMacro("\\thetasym", "\\vartheta"); // TODO: defineMacro("\\varcoppa", "\\\mbox{\\coppa}");
16112
16113defineMacro("\\weierp", "\\wp");
16114defineMacro("\\Zeta", "\\mathrm{Z}"); //////////////////////////////////////////////////////////////////////
16115// statmath.sty
16116// https://ctan.math.illinois.edu/macros/latex/contrib/statmath/statmath.pdf
16117
16118defineMacro("\\argmin", "\\DOTSB\\operatorname*{arg\\,min}");
16119defineMacro("\\argmax", "\\DOTSB\\operatorname*{arg\\,max}");
16120defineMacro("\\plim", "\\DOTSB\\mathop{\\operatorname{plim}}\\limits"); //////////////////////////////////////////////////////////////////////
16121// braket.sty
16122// http://ctan.math.washington.edu/tex-archive/macros/latex/contrib/braket/braket.pdf
16123
16124defineMacro("\\bra", "\\mathinner{\\langle{#1}|}");
16125defineMacro("\\ket", "\\mathinner{|{#1}\\rangle}");
16126defineMacro("\\braket", "\\mathinner{\\langle{#1}\\rangle}");
16127defineMacro("\\Bra", "\\left\\langle#1\\right|");
16128defineMacro("\\Ket", "\\left|#1\\right\\rangle"); //////////////////////////////////////////////////////////////////////
16129// actuarialangle.dtx
16130
16131defineMacro("\\angln", "{\\angl n}"); // Custom Khan Academy colors, should be moved to an optional package
16132
16133defineMacro("\\blue", "\\textcolor{##6495ed}{#1}");
16134defineMacro("\\orange", "\\textcolor{##ffa500}{#1}");
16135defineMacro("\\pink", "\\textcolor{##ff00af}{#1}");
16136defineMacro("\\red", "\\textcolor{##df0030}{#1}");
16137defineMacro("\\green", "\\textcolor{##28ae7b}{#1}");
16138defineMacro("\\gray", "\\textcolor{gray}{#1}");
16139defineMacro("\\purple", "\\textcolor{##9d38bd}{#1}");
16140defineMacro("\\blueA", "\\textcolor{##ccfaff}{#1}");
16141defineMacro("\\blueB", "\\textcolor{##80f6ff}{#1}");
16142defineMacro("\\blueC", "\\textcolor{##63d9ea}{#1}");
16143defineMacro("\\blueD", "\\textcolor{##11accd}{#1}");
16144defineMacro("\\blueE", "\\textcolor{##0c7f99}{#1}");
16145defineMacro("\\tealA", "\\textcolor{##94fff5}{#1}");
16146defineMacro("\\tealB", "\\textcolor{##26edd5}{#1}");
16147defineMacro("\\tealC", "\\textcolor{##01d1c1}{#1}");
16148defineMacro("\\tealD", "\\textcolor{##01a995}{#1}");
16149defineMacro("\\tealE", "\\textcolor{##208170}{#1}");
16150defineMacro("\\greenA", "\\textcolor{##b6ffb0}{#1}");
16151defineMacro("\\greenB", "\\textcolor{##8af281}{#1}");
16152defineMacro("\\greenC", "\\textcolor{##74cf70}{#1}");
16153defineMacro("\\greenD", "\\textcolor{##1fab54}{#1}");
16154defineMacro("\\greenE", "\\textcolor{##0d923f}{#1}");
16155defineMacro("\\goldA", "\\textcolor{##ffd0a9}{#1}");
16156defineMacro("\\goldB", "\\textcolor{##ffbb71}{#1}");
16157defineMacro("\\goldC", "\\textcolor{##ff9c39}{#1}");
16158defineMacro("\\goldD", "\\textcolor{##e07d10}{#1}");
16159defineMacro("\\goldE", "\\textcolor{##a75a05}{#1}");
16160defineMacro("\\redA", "\\textcolor{##fca9a9}{#1}");
16161defineMacro("\\redB", "\\textcolor{##ff8482}{#1}");
16162defineMacro("\\redC", "\\textcolor{##f9685d}{#1}");
16163defineMacro("\\redD", "\\textcolor{##e84d39}{#1}");
16164defineMacro("\\redE", "\\textcolor{##bc2612}{#1}");
16165defineMacro("\\maroonA", "\\textcolor{##ffbde0}{#1}");
16166defineMacro("\\maroonB", "\\textcolor{##ff92c6}{#1}");
16167defineMacro("\\maroonC", "\\textcolor{##ed5fa6}{#1}");
16168defineMacro("\\maroonD", "\\textcolor{##ca337c}{#1}");
16169defineMacro("\\maroonE", "\\textcolor{##9e034e}{#1}");
16170defineMacro("\\purpleA", "\\textcolor{##ddd7ff}{#1}");
16171defineMacro("\\purpleB", "\\textcolor{##c6b9fc}{#1}");
16172defineMacro("\\purpleC", "\\textcolor{##aa87ff}{#1}");
16173defineMacro("\\purpleD", "\\textcolor{##7854ab}{#1}");
16174defineMacro("\\purpleE", "\\textcolor{##543b78}{#1}");
16175defineMacro("\\mintA", "\\textcolor{##f5f9e8}{#1}");
16176defineMacro("\\mintB", "\\textcolor{##edf2df}{#1}");
16177defineMacro("\\mintC", "\\textcolor{##e0e5cc}{#1}");
16178defineMacro("\\grayA", "\\textcolor{##f6f7f7}{#1}");
16179defineMacro("\\grayB", "\\textcolor{##f0f1f2}{#1}");
16180defineMacro("\\grayC", "\\textcolor{##e3e5e6}{#1}");
16181defineMacro("\\grayD", "\\textcolor{##d6d8da}{#1}");
16182defineMacro("\\grayE", "\\textcolor{##babec2}{#1}");
16183defineMacro("\\grayF", "\\textcolor{##888d93}{#1}");
16184defineMacro("\\grayG", "\\textcolor{##626569}{#1}");
16185defineMacro("\\grayH", "\\textcolor{##3b3e40}{#1}");
16186defineMacro("\\grayI", "\\textcolor{##21242c}{#1}");
16187defineMacro("\\kaBlue", "\\textcolor{##314453}{#1}");
16188defineMacro("\\kaGreen", "\\textcolor{##71B307}{#1}");
16189;// CONCATENATED MODULE: ./src/MacroExpander.js
16190/**
16191 * This file contains the “gullet” where macros are expanded
16192 * until only non-macro tokens remain.
16193 */
16194
16195
16196
16197
16198
16199
16200
16201// List of commands that act like macros but aren't defined as a macro,
16202// function, or symbol. Used in `isDefined`.
16203var implicitCommands = {
16204 "^": true,
16205 // Parser.js
16206 "_": true,
16207 // Parser.js
16208 "\\limits": true,
16209 // Parser.js
16210 "\\nolimits": true // Parser.js
16211
16212};
16213
16214var MacroExpander = /*#__PURE__*/function () {
16215 function MacroExpander(input, settings, mode) {
16216 this.settings = void 0;
16217 this.expansionCount = void 0;
16218 this.lexer = void 0;
16219 this.macros = void 0;
16220 this.stack = void 0;
16221 this.mode = void 0;
16222 this.settings = settings;
16223 this.expansionCount = 0;
16224 this.feed(input); // Make new global namespace
16225
16226 this.macros = new Namespace(src_macros, settings.macros);
16227 this.mode = mode;
16228 this.stack = []; // contains tokens in REVERSE order
16229 }
16230 /**
16231 * Feed a new input string to the same MacroExpander
16232 * (with existing macros etc.).
16233 */
16234
16235
16236 var _proto = MacroExpander.prototype;
16237
16238 _proto.feed = function feed(input) {
16239 this.lexer = new Lexer(input, this.settings);
16240 }
16241 /**
16242 * Switches between "text" and "math" modes.
16243 */
16244 ;
16245
16246 _proto.switchMode = function switchMode(newMode) {
16247 this.mode = newMode;
16248 }
16249 /**
16250 * Start a new group nesting within all namespaces.
16251 */
16252 ;
16253
16254 _proto.beginGroup = function beginGroup() {
16255 this.macros.beginGroup();
16256 }
16257 /**
16258 * End current group nesting within all namespaces.
16259 */
16260 ;
16261
16262 _proto.endGroup = function endGroup() {
16263 this.macros.endGroup();
16264 }
16265 /**
16266 * Ends all currently nested groups (if any), restoring values before the
16267 * groups began. Useful in case of an error in the middle of parsing.
16268 */
16269 ;
16270
16271 _proto.endGroups = function endGroups() {
16272 this.macros.endGroups();
16273 }
16274 /**
16275 * Returns the topmost token on the stack, without expanding it.
16276 * Similar in behavior to TeX's `\futurelet`.
16277 */
16278 ;
16279
16280 _proto.future = function future() {
16281 if (this.stack.length === 0) {
16282 this.pushToken(this.lexer.lex());
16283 }
16284
16285 return this.stack[this.stack.length - 1];
16286 }
16287 /**
16288 * Remove and return the next unexpanded token.
16289 */
16290 ;
16291
16292 _proto.popToken = function popToken() {
16293 this.future(); // ensure non-empty stack
16294
16295 return this.stack.pop();
16296 }
16297 /**
16298 * Add a given token to the token stack. In particular, this get be used
16299 * to put back a token returned from one of the other methods.
16300 */
16301 ;
16302
16303 _proto.pushToken = function pushToken(token) {
16304 this.stack.push(token);
16305 }
16306 /**
16307 * Append an array of tokens to the token stack.
16308 */
16309 ;
16310
16311 _proto.pushTokens = function pushTokens(tokens) {
16312 var _this$stack;
16313
16314 (_this$stack = this.stack).push.apply(_this$stack, tokens);
16315 }
16316 /**
16317 * Find an macro argument without expanding tokens and append the array of
16318 * tokens to the token stack. Uses Token as a container for the result.
16319 */
16320 ;
16321
16322 _proto.scanArgument = function scanArgument(isOptional) {
16323 var start;
16324 var end;
16325 var tokens;
16326
16327 if (isOptional) {
16328 this.consumeSpaces(); // \@ifnextchar gobbles any space following it
16329
16330 if (this.future().text !== "[") {
16331 return null;
16332 }
16333
16334 start = this.popToken(); // don't include [ in tokens
16335
16336 var _this$consumeArg = this.consumeArg(["]"]);
16337
16338 tokens = _this$consumeArg.tokens;
16339 end = _this$consumeArg.end;
16340 } else {
16341 var _this$consumeArg2 = this.consumeArg();
16342
16343 tokens = _this$consumeArg2.tokens;
16344 start = _this$consumeArg2.start;
16345 end = _this$consumeArg2.end;
16346 } // indicate the end of an argument
16347
16348
16349 this.pushToken(new Token("EOF", end.loc));
16350 this.pushTokens(tokens);
16351 return start.range(end, "");
16352 }
16353 /**
16354 * Consume all following space tokens, without expansion.
16355 */
16356 ;
16357
16358 _proto.consumeSpaces = function consumeSpaces() {
16359 for (;;) {
16360 var token = this.future();
16361
16362 if (token.text === " ") {
16363 this.stack.pop();
16364 } else {
16365 break;
16366 }
16367 }
16368 }
16369 /**
16370 * Consume an argument from the token stream, and return the resulting array
16371 * of tokens and start/end token.
16372 */
16373 ;
16374
16375 _proto.consumeArg = function consumeArg(delims) {
16376 // The argument for a delimited parameter is the shortest (possibly
16377 // empty) sequence of tokens with properly nested {...} groups that is
16378 // followed ... by this particular list of non-parameter tokens.
16379 // The argument for an undelimited parameter is the next nonblank
16380 // token, unless that token is ‘{’, when the argument will be the
16381 // entire {...} group that follows.
16382 var tokens = [];
16383 var isDelimited = delims && delims.length > 0;
16384
16385 if (!isDelimited) {
16386 // Ignore spaces between arguments. As the TeXbook says:
16387 // "After you have said ‘\def\row#1#2{...}’, you are allowed to
16388 // put spaces between the arguments (e.g., ‘\row x n’), because
16389 // TeX doesn’t use single spaces as undelimited arguments."
16390 this.consumeSpaces();
16391 }
16392
16393 var start = this.future();
16394 var tok;
16395 var depth = 0;
16396 var match = 0;
16397
16398 do {
16399 tok = this.popToken();
16400 tokens.push(tok);
16401
16402 if (tok.text === "{") {
16403 ++depth;
16404 } else if (tok.text === "}") {
16405 --depth;
16406
16407 if (depth === -1) {
16408 throw new src_ParseError("Extra }", tok);
16409 }
16410 } else if (tok.text === "EOF") {
16411 throw new src_ParseError("Unexpected end of input in a macro argument" + ", expected '" + (delims && isDelimited ? delims[match] : "}") + "'", tok);
16412 }
16413
16414 if (delims && isDelimited) {
16415 if ((depth === 0 || depth === 1 && delims[match] === "{") && tok.text === delims[match]) {
16416 ++match;
16417
16418 if (match === delims.length) {
16419 // don't include delims in tokens
16420 tokens.splice(-match, match);
16421 break;
16422 }
16423 } else {
16424 match = 0;
16425 }
16426 }
16427 } while (depth !== 0 || isDelimited); // If the argument found ... has the form ‘{<nested tokens>}’,
16428 // ... the outermost braces enclosing the argument are removed
16429
16430
16431 if (start.text === "{" && tokens[tokens.length - 1].text === "}") {
16432 tokens.pop();
16433 tokens.shift();
16434 }
16435
16436 tokens.reverse(); // to fit in with stack order
16437
16438 return {
16439 tokens: tokens,
16440 start: start,
16441 end: tok
16442 };
16443 }
16444 /**
16445 * Consume the specified number of (delimited) arguments from the token
16446 * stream and return the resulting array of arguments.
16447 */
16448 ;
16449
16450 _proto.consumeArgs = function consumeArgs(numArgs, delimiters) {
16451 if (delimiters) {
16452 if (delimiters.length !== numArgs + 1) {
16453 throw new src_ParseError("The length of delimiters doesn't match the number of args!");
16454 }
16455
16456 var delims = delimiters[0];
16457
16458 for (var i = 0; i < delims.length; i++) {
16459 var tok = this.popToken();
16460
16461 if (delims[i] !== tok.text) {
16462 throw new src_ParseError("Use of the macro doesn't match its definition", tok);
16463 }
16464 }
16465 }
16466
16467 var args = [];
16468
16469 for (var _i = 0; _i < numArgs; _i++) {
16470 args.push(this.consumeArg(delimiters && delimiters[_i + 1]).tokens);
16471 }
16472
16473 return args;
16474 }
16475 /**
16476 * Expand the next token only once if possible.
16477 *
16478 * If the token is expanded, the resulting tokens will be pushed onto
16479 * the stack in reverse order and will be returned as an array,
16480 * also in reverse order.
16481 *
16482 * If not, the next token will be returned without removing it
16483 * from the stack. This case can be detected by a `Token` return value
16484 * instead of an `Array` return value.
16485 *
16486 * In either case, the next token will be on the top of the stack,
16487 * or the stack will be empty.
16488 *
16489 * Used to implement `expandAfterFuture` and `expandNextToken`.
16490 *
16491 * If expandableOnly, only expandable tokens are expanded and
16492 * an undefined control sequence results in an error.
16493 */
16494 ;
16495
16496 _proto.expandOnce = function expandOnce(expandableOnly) {
16497 var topToken = this.popToken();
16498 var name = topToken.text;
16499 var expansion = !topToken.noexpand ? this._getExpansion(name) : null;
16500
16501 if (expansion == null || expandableOnly && expansion.unexpandable) {
16502 if (expandableOnly && expansion == null && name[0] === "\\" && !this.isDefined(name)) {
16503 throw new src_ParseError("Undefined control sequence: " + name);
16504 }
16505
16506 this.pushToken(topToken);
16507 return topToken;
16508 }
16509
16510 this.expansionCount++;
16511
16512 if (this.expansionCount > this.settings.maxExpand) {
16513 throw new src_ParseError("Too many expansions: infinite loop or " + "need to increase maxExpand setting");
16514 }
16515
16516 var tokens = expansion.tokens;
16517 var args = this.consumeArgs(expansion.numArgs, expansion.delimiters);
16518
16519 if (expansion.numArgs) {
16520 // paste arguments in place of the placeholders
16521 tokens = tokens.slice(); // make a shallow copy
16522
16523 for (var i = tokens.length - 1; i >= 0; --i) {
16524 var tok = tokens[i];
16525
16526 if (tok.text === "#") {
16527 if (i === 0) {
16528 throw new src_ParseError("Incomplete placeholder at end of macro body", tok);
16529 }
16530
16531 tok = tokens[--i]; // next token on stack
16532
16533 if (tok.text === "#") {
16534 // ## → #
16535 tokens.splice(i + 1, 1); // drop first #
16536 } else if (/^[1-9]$/.test(tok.text)) {
16537 var _tokens;
16538
16539 // replace the placeholder with the indicated argument
16540 (_tokens = tokens).splice.apply(_tokens, [i, 2].concat(args[+tok.text - 1]));
16541 } else {
16542 throw new src_ParseError("Not a valid argument number", tok);
16543 }
16544 }
16545 }
16546 } // Concatenate expansion onto top of stack.
16547
16548
16549 this.pushTokens(tokens);
16550 return tokens;
16551 }
16552 /**
16553 * Expand the next token only once (if possible), and return the resulting
16554 * top token on the stack (without removing anything from the stack).
16555 * Similar in behavior to TeX's `\expandafter\futurelet`.
16556 * Equivalent to expandOnce() followed by future().
16557 */
16558 ;
16559
16560 _proto.expandAfterFuture = function expandAfterFuture() {
16561 this.expandOnce();
16562 return this.future();
16563 }
16564 /**
16565 * Recursively expand first token, then return first non-expandable token.
16566 */
16567 ;
16568
16569 _proto.expandNextToken = function expandNextToken() {
16570 for (;;) {
16571 var expanded = this.expandOnce(); // expandOnce returns Token if and only if it's fully expanded.
16572
16573 if (expanded instanceof Token) {
16574 // the token after \noexpand is interpreted as if its meaning
16575 // were ‘\relax’
16576 if (expanded.treatAsRelax) {
16577 expanded.text = "\\relax";
16578 }
16579
16580 return this.stack.pop(); // === expanded
16581 }
16582 } // Flow unable to figure out that this pathway is impossible.
16583 // https://github.com/facebook/flow/issues/4808
16584
16585
16586 throw new Error(); // eslint-disable-line no-unreachable
16587 }
16588 /**
16589 * Fully expand the given macro name and return the resulting list of
16590 * tokens, or return `undefined` if no such macro is defined.
16591 */
16592 ;
16593
16594 _proto.expandMacro = function expandMacro(name) {
16595 return this.macros.has(name) ? this.expandTokens([new Token(name)]) : undefined;
16596 }
16597 /**
16598 * Fully expand the given token stream and return the resulting list of tokens
16599 */
16600 ;
16601
16602 _proto.expandTokens = function expandTokens(tokens) {
16603 var output = [];
16604 var oldStackLength = this.stack.length;
16605 this.pushTokens(tokens);
16606
16607 while (this.stack.length > oldStackLength) {
16608 var expanded = this.expandOnce(true); // expand only expandable tokens
16609 // expandOnce returns Token if and only if it's fully expanded.
16610
16611 if (expanded instanceof Token) {
16612 if (expanded.treatAsRelax) {
16613 // the expansion of \noexpand is the token itself
16614 expanded.noexpand = false;
16615 expanded.treatAsRelax = false;
16616 }
16617
16618 output.push(this.stack.pop());
16619 }
16620 }
16621
16622 return output;
16623 }
16624 /**
16625 * Fully expand the given macro name and return the result as a string,
16626 * or return `undefined` if no such macro is defined.
16627 */
16628 ;
16629
16630 _proto.expandMacroAsText = function expandMacroAsText(name) {
16631 var tokens = this.expandMacro(name);
16632
16633 if (tokens) {
16634 return tokens.map(function (token) {
16635 return token.text;
16636 }).join("");
16637 } else {
16638 return tokens;
16639 }
16640 }
16641 /**
16642 * Returns the expanded macro as a reversed array of tokens and a macro
16643 * argument count. Or returns `null` if no such macro.
16644 */
16645 ;
16646
16647 _proto._getExpansion = function _getExpansion(name) {
16648 var definition = this.macros.get(name);
16649
16650 if (definition == null) {
16651 // mainly checking for undefined here
16652 return definition;
16653 } // If a single character has an associated catcode other than 13
16654 // (active character), then don't expand it.
16655
16656
16657 if (name.length === 1) {
16658 var catcode = this.lexer.catcodes[name];
16659
16660 if (catcode != null && catcode !== 13) {
16661 return;
16662 }
16663 }
16664
16665 var expansion = typeof definition === "function" ? definition(this) : definition;
16666
16667 if (typeof expansion === "string") {
16668 var numArgs = 0;
16669
16670 if (expansion.indexOf("#") !== -1) {
16671 var stripped = expansion.replace(/##/g, "");
16672
16673 while (stripped.indexOf("#" + (numArgs + 1)) !== -1) {
16674 ++numArgs;
16675 }
16676 }
16677
16678 var bodyLexer = new Lexer(expansion, this.settings);
16679 var tokens = [];
16680 var tok = bodyLexer.lex();
16681
16682 while (tok.text !== "EOF") {
16683 tokens.push(tok);
16684 tok = bodyLexer.lex();
16685 }
16686
16687 tokens.reverse(); // to fit in with stack using push and pop
16688
16689 var expanded = {
16690 tokens: tokens,
16691 numArgs: numArgs
16692 };
16693 return expanded;
16694 }
16695
16696 return expansion;
16697 }
16698 /**
16699 * Determine whether a command is currently "defined" (has some
16700 * functionality), meaning that it's a macro (in the current group),
16701 * a function, a symbol, or one of the special commands listed in
16702 * `implicitCommands`.
16703 */
16704 ;
16705
16706 _proto.isDefined = function isDefined(name) {
16707 return this.macros.has(name) || src_functions.hasOwnProperty(name) || src_symbols.math.hasOwnProperty(name) || src_symbols.text.hasOwnProperty(name) || implicitCommands.hasOwnProperty(name);
16708 }
16709 /**
16710 * Determine whether a command is expandable.
16711 */
16712 ;
16713
16714 _proto.isExpandable = function isExpandable(name) {
16715 var macro = this.macros.get(name);
16716 return macro != null ? typeof macro === "string" || typeof macro === "function" || !macro.unexpandable : src_functions.hasOwnProperty(name) && !src_functions[name].primitive;
16717 };
16718
16719 return MacroExpander;
16720}();
16721
16722
16723;// CONCATENATED MODULE: ./src/Parser.js
16724/* eslint no-constant-condition:0 */
16725
16726
16727
16728
16729
16730
16731
16732
16733
16734 // Pre-evaluate both modules as unicodeSymbols require String.normalize()
16735
16736var unicodeAccents = {
16737 "́": {
16738 "text": "\\'",
16739 "math": "\\acute"
16740 },
16741 "̀": {
16742 "text": "\\`",
16743 "math": "\\grave"
16744 },
16745 "̈": {
16746 "text": "\\\"",
16747 "math": "\\ddot"
16748 },
16749 "̃": {
16750 "text": "\\~",
16751 "math": "\\tilde"
16752 },
16753 "̄": {
16754 "text": "\\=",
16755 "math": "\\bar"
16756 },
16757 "̆": {
16758 "text": "\\u",
16759 "math": "\\breve"
16760 },
16761 "̌": {
16762 "text": "\\v",
16763 "math": "\\check"
16764 },
16765 "̂": {
16766 "text": "\\^",
16767 "math": "\\hat"
16768 },
16769 "̇": {
16770 "text": "\\.",
16771 "math": "\\dot"
16772 },
16773 "̊": {
16774 "text": "\\r",
16775 "math": "\\mathring"
16776 },
16777 "̋": {
16778 "text": "\\H"
16779 },
16780 "̧": {
16781 "text": "\\c"
16782 }
16783};
16784var unicodeSymbols = {
16785 "á": "á",
16786 "à": "à",
16787 "ä": "ä",
16788 "ǟ": "ǟ",
16789 "ã": "ã",
16790 "ā": "ā",
16791 "ă": "ă",
16792 "ắ": "ắ",
16793 "ằ": "ằ",
16794 "ẵ": "ẵ",
16795 "ǎ": "ǎ",
16796 "â": "â",
16797 "ấ": "ấ",
16798 "ầ": "ầ",
16799 "ẫ": "ẫ",
16800 "ȧ": "ȧ",
16801 "ǡ": "ǡ",
16802 "å": "å",
16803 "ǻ": "ǻ",
16804 "ḃ": "ḃ",
16805 "ć": "ć",
16806 "ḉ": "ḉ",
16807 "č": "č",
16808 "ĉ": "ĉ",
16809 "ċ": "ċ",
16810 "ç": "ç",
16811 "ď": "ď",
16812 "ḋ": "ḋ",
16813 "ḑ": "ḑ",
16814 "é": "é",
16815 "è": "è",
16816 "ë": "ë",
16817 "ẽ": "ẽ",
16818 "ē": "ē",
16819 "ḗ": "ḗ",
16820 "ḕ": "ḕ",
16821 "ĕ": "ĕ",
16822 "ḝ": "ḝ",
16823 "ě": "ě",
16824 "ê": "ê",
16825 "ế": "ế",
16826 "ề": "ề",
16827 "ễ": "ễ",
16828 "ė": "ė",
16829 "ȩ": "ȩ",
16830 "ḟ": "ḟ",
16831 "ǵ": "ǵ",
16832 "ḡ": "ḡ",
16833 "ğ": "ğ",
16834 "ǧ": "ǧ",
16835 "ĝ": "ĝ",
16836 "ġ": "ġ",
16837 "ģ": "ģ",
16838 "ḧ": "ḧ",
16839 "ȟ": "ȟ",
16840 "ĥ": "ĥ",
16841 "ḣ": "ḣ",
16842 "ḩ": "ḩ",
16843 "í": "í",
16844 "ì": "ì",
16845 "ï": "ï",
16846 "ḯ": "ḯ",
16847 "ĩ": "ĩ",
16848 "ī": "ī",
16849 "ĭ": "ĭ",
16850 "ǐ": "ǐ",
16851 "î": "î",
16852 "ǰ": "ǰ",
16853 "ĵ": "ĵ",
16854 "ḱ": "ḱ",
16855 "ǩ": "ǩ",
16856 "ķ": "ķ",
16857 "ĺ": "ĺ",
16858 "ľ": "ľ",
16859 "ļ": "ļ",
16860 "ḿ": "ḿ",
16861 "ṁ": "ṁ",
16862 "ń": "ń",
16863 "ǹ": "ǹ",
16864 "ñ": "ñ",
16865 "ň": "ň",
16866 "ṅ": "ṅ",
16867 "ņ": "ņ",
16868 "ó": "ó",
16869 "ò": "ò",
16870 "ö": "ö",
16871 "ȫ": "ȫ",
16872 "õ": "õ",
16873 "ṍ": "ṍ",
16874 "ṏ": "ṏ",
16875 "ȭ": "ȭ",
16876 "ō": "ō",
16877 "ṓ": "ṓ",
16878 "ṑ": "ṑ",
16879 "ŏ": "ŏ",
16880 "ǒ": "ǒ",
16881 "ô": "ô",
16882 "ố": "ố",
16883 "ồ": "ồ",
16884 "ỗ": "ỗ",
16885 "ȯ": "ȯ",
16886 "ȱ": "ȱ",
16887 "ő": "ő",
16888 "ṕ": "ṕ",
16889 "ṗ": "ṗ",
16890 "ŕ": "ŕ",
16891 "ř": "ř",
16892 "ṙ": "ṙ",
16893 "ŗ": "ŗ",
16894 "ś": "ś",
16895 "ṥ": "ṥ",
16896 "š": "š",
16897 "ṧ": "ṧ",
16898 "ŝ": "ŝ",
16899 "ṡ": "ṡ",
16900 "ş": "ş",
16901 "ẗ": "ẗ",
16902 "ť": "ť",
16903 "ṫ": "ṫ",
16904 "ţ": "ţ",
16905 "ú": "ú",
16906 "ù": "ù",
16907 "ü": "ü",
16908 "ǘ": "ǘ",
16909 "ǜ": "ǜ",
16910 "ǖ": "ǖ",
16911 "ǚ": "ǚ",
16912 "ũ": "ũ",
16913 "ṹ": "ṹ",
16914 "ū": "ū",
16915 "ṻ": "ṻ",
16916 "ŭ": "ŭ",
16917 "ǔ": "ǔ",
16918 "û": "û",
16919 "ů": "ů",
16920 "ű": "ű",
16921 "ṽ": "ṽ",
16922 "ẃ": "ẃ",
16923 "ẁ": "ẁ",
16924 "ẅ": "ẅ",
16925 "ŵ": "ŵ",
16926 "ẇ": "ẇ",
16927 "ẘ": "ẘ",
16928 "ẍ": "ẍ",
16929 "ẋ": "ẋ",
16930 "ý": "ý",
16931 "ỳ": "ỳ",
16932 "ÿ": "ÿ",
16933 "ỹ": "ỹ",
16934 "ȳ": "ȳ",
16935 "ŷ": "ŷ",
16936 "ẏ": "ẏ",
16937 "ẙ": "ẙ",
16938 "ź": "ź",
16939 "ž": "ž",
16940 "ẑ": "ẑ",
16941 "ż": "ż",
16942 "Á": "Á",
16943 "À": "À",
16944 "Ä": "Ä",
16945 "Ǟ": "Ǟ",
16946 "Ã": "Ã",
16947 "Ā": "Ā",
16948 "Ă": "Ă",
16949 "Ắ": "Ắ",
16950 "Ằ": "Ằ",
16951 "Ẵ": "Ẵ",
16952 "Ǎ": "Ǎ",
16953 "Â": "Â",
16954 "Ấ": "Ấ",
16955 "Ầ": "Ầ",
16956 "Ẫ": "Ẫ",
16957 "Ȧ": "Ȧ",
16958 "Ǡ": "Ǡ",
16959 "Å": "Å",
16960 "Ǻ": "Ǻ",
16961 "Ḃ": "Ḃ",
16962 "Ć": "Ć",
16963 "Ḉ": "Ḉ",
16964 "Č": "Č",
16965 "Ĉ": "Ĉ",
16966 "Ċ": "Ċ",
16967 "Ç": "Ç",
16968 "Ď": "Ď",
16969 "Ḋ": "Ḋ",
16970 "Ḑ": "Ḑ",
16971 "É": "É",
16972 "È": "È",
16973 "Ë": "Ë",
16974 "Ẽ": "Ẽ",
16975 "Ē": "Ē",
16976 "Ḗ": "Ḗ",
16977 "Ḕ": "Ḕ",
16978 "Ĕ": "Ĕ",
16979 "Ḝ": "Ḝ",
16980 "Ě": "Ě",
16981 "Ê": "Ê",
16982 "Ế": "Ế",
16983 "Ề": "Ề",
16984 "Ễ": "Ễ",
16985 "Ė": "Ė",
16986 "Ȩ": "Ȩ",
16987 "Ḟ": "Ḟ",
16988 "Ǵ": "Ǵ",
16989 "Ḡ": "Ḡ",
16990 "Ğ": "Ğ",
16991 "Ǧ": "Ǧ",
16992 "Ĝ": "Ĝ",
16993 "Ġ": "Ġ",
16994 "Ģ": "Ģ",
16995 "Ḧ": "Ḧ",
16996 "Ȟ": "Ȟ",
16997 "Ĥ": "Ĥ",
16998 "Ḣ": "Ḣ",
16999 "Ḩ": "Ḩ",
17000 "Í": "Í",
17001 "Ì": "Ì",
17002 "Ï": "Ï",
17003 "Ḯ": "Ḯ",
17004 "Ĩ": "Ĩ",
17005 "Ī": "Ī",
17006 "Ĭ": "Ĭ",
17007 "Ǐ": "Ǐ",
17008 "Î": "Î",
17009 "İ": "İ",
17010 "Ĵ": "Ĵ",
17011 "Ḱ": "Ḱ",
17012 "Ǩ": "Ǩ",
17013 "Ķ": "Ķ",
17014 "Ĺ": "Ĺ",
17015 "Ľ": "Ľ",
17016 "Ļ": "Ļ",
17017 "Ḿ": "Ḿ",
17018 "Ṁ": "Ṁ",
17019 "Ń": "Ń",
17020 "Ǹ": "Ǹ",
17021 "Ñ": "Ñ",
17022 "Ň": "Ň",
17023 "Ṅ": "Ṅ",
17024 "Ņ": "Ņ",
17025 "Ó": "Ó",
17026 "Ò": "Ò",
17027 "Ö": "Ö",
17028 "Ȫ": "Ȫ",
17029 "Õ": "Õ",
17030 "Ṍ": "Ṍ",
17031 "Ṏ": "Ṏ",
17032 "Ȭ": "Ȭ",
17033 "Ō": "Ō",
17034 "Ṓ": "Ṓ",
17035 "Ṑ": "Ṑ",
17036 "Ŏ": "Ŏ",
17037 "Ǒ": "Ǒ",
17038 "Ô": "Ô",
17039 "Ố": "Ố",
17040 "Ồ": "Ồ",
17041 "Ỗ": "Ỗ",
17042 "Ȯ": "Ȯ",
17043 "Ȱ": "Ȱ",
17044 "Ő": "Ő",
17045 "Ṕ": "Ṕ",
17046 "Ṗ": "Ṗ",
17047 "Ŕ": "Ŕ",
17048 "Ř": "Ř",
17049 "Ṙ": "Ṙ",
17050 "Ŗ": "Ŗ",
17051 "Ś": "Ś",
17052 "Ṥ": "Ṥ",
17053 "Š": "Š",
17054 "Ṧ": "Ṧ",
17055 "Ŝ": "Ŝ",
17056 "Ṡ": "Ṡ",
17057 "Ş": "Ş",
17058 "Ť": "Ť",
17059 "Ṫ": "Ṫ",
17060 "Ţ": "Ţ",
17061 "Ú": "Ú",
17062 "Ù": "Ù",
17063 "Ü": "Ü",
17064 "Ǘ": "Ǘ",
17065 "Ǜ": "Ǜ",
17066 "Ǖ": "Ǖ",
17067 "Ǚ": "Ǚ",
17068 "Ũ": "Ũ",
17069 "Ṹ": "Ṹ",
17070 "Ū": "Ū",
17071 "Ṻ": "Ṻ",
17072 "Ŭ": "Ŭ",
17073 "Ǔ": "Ǔ",
17074 "Û": "Û",
17075 "Ů": "Ů",
17076 "Ű": "Ű",
17077 "Ṽ": "Ṽ",
17078 "Ẃ": "Ẃ",
17079 "Ẁ": "Ẁ",
17080 "Ẅ": "Ẅ",
17081 "Ŵ": "Ŵ",
17082 "Ẇ": "Ẇ",
17083 "Ẍ": "Ẍ",
17084 "Ẋ": "Ẋ",
17085 "Ý": "Ý",
17086 "Ỳ": "Ỳ",
17087 "Ÿ": "Ÿ",
17088 "Ỹ": "Ỹ",
17089 "Ȳ": "Ȳ",
17090 "Ŷ": "Ŷ",
17091 "Ẏ": "Ẏ",
17092 "Ź": "Ź",
17093 "Ž": "Ž",
17094 "Ẑ": "Ẑ",
17095 "Ż": "Ż",
17096 "ά": "ά",
17097 "ὰ": "ὰ",
17098 "ᾱ": "ᾱ",
17099 "ᾰ": "ᾰ",
17100 "έ": "έ",
17101 "ὲ": "ὲ",
17102 "ή": "ή",
17103 "ὴ": "ὴ",
17104 "ί": "ί",
17105 "ὶ": "ὶ",
17106 "ϊ": "ϊ",
17107 "ΐ": "ΐ",
17108 "ῒ": "ῒ",
17109 "ῑ": "ῑ",
17110 "ῐ": "ῐ",
17111 "ό": "ό",
17112 "ὸ": "ὸ",
17113 "ύ": "ύ",
17114 "ὺ": "ὺ",
17115 "ϋ": "ϋ",
17116 "ΰ": "ΰ",
17117 "ῢ": "ῢ",
17118 "ῡ": "ῡ",
17119 "ῠ": "ῠ",
17120 "ώ": "ώ",
17121 "ὼ": "ὼ",
17122 "Ύ": "Ύ",
17123 "Ὺ": "Ὺ",
17124 "Ϋ": "Ϋ",
17125 "Ῡ": "Ῡ",
17126 "Ῠ": "Ῠ",
17127 "Ώ": "Ώ",
17128 "Ὼ": "Ὼ"
17129};
17130
17131/**
17132 * This file contains the parser used to parse out a TeX expression from the
17133 * input. Since TeX isn't context-free, standard parsers don't work particularly
17134 * well.
17135 *
17136 * The strategy of this parser is as such:
17137 *
17138 * The main functions (the `.parse...` ones) take a position in the current
17139 * parse string to parse tokens from. The lexer (found in Lexer.js, stored at
17140 * this.gullet.lexer) also supports pulling out tokens at arbitrary places. When
17141 * individual tokens are needed at a position, the lexer is called to pull out a
17142 * token, which is then used.
17143 *
17144 * The parser has a property called "mode" indicating the mode that
17145 * the parser is currently in. Currently it has to be one of "math" or
17146 * "text", which denotes whether the current environment is a math-y
17147 * one or a text-y one (e.g. inside \text). Currently, this serves to
17148 * limit the functions which can be used in text mode.
17149 *
17150 * The main functions then return an object which contains the useful data that
17151 * was parsed at its given point, and a new position at the end of the parsed
17152 * data. The main functions can call each other and continue the parsing by
17153 * using the returned position as a new starting point.
17154 *
17155 * There are also extra `.handle...` functions, which pull out some reused
17156 * functionality into self-contained functions.
17157 *
17158 * The functions return ParseNodes.
17159 */
17160var Parser = /*#__PURE__*/function () {
17161 function Parser(input, settings) {
17162 this.mode = void 0;
17163 this.gullet = void 0;
17164 this.settings = void 0;
17165 this.leftrightDepth = void 0;
17166 this.nextToken = void 0;
17167 // Start in math mode
17168 this.mode = "math"; // Create a new macro expander (gullet) and (indirectly via that) also a
17169 // new lexer (mouth) for this parser (stomach, in the language of TeX)
17170
17171 this.gullet = new MacroExpander(input, settings, this.mode); // Store the settings for use in parsing
17172
17173 this.settings = settings; // Count leftright depth (for \middle errors)
17174
17175 this.leftrightDepth = 0;
17176 }
17177 /**
17178 * Checks a result to make sure it has the right type, and throws an
17179 * appropriate error otherwise.
17180 */
17181
17182
17183 var _proto = Parser.prototype;
17184
17185 _proto.expect = function expect(text, consume) {
17186 if (consume === void 0) {
17187 consume = true;
17188 }
17189
17190 if (this.fetch().text !== text) {
17191 throw new src_ParseError("Expected '" + text + "', got '" + this.fetch().text + "'", this.fetch());
17192 }
17193
17194 if (consume) {
17195 this.consume();
17196 }
17197 }
17198 /**
17199 * Discards the current lookahead token, considering it consumed.
17200 */
17201 ;
17202
17203 _proto.consume = function consume() {
17204 this.nextToken = null;
17205 }
17206 /**
17207 * Return the current lookahead token, or if there isn't one (at the
17208 * beginning, or if the previous lookahead token was consume()d),
17209 * fetch the next token as the new lookahead token and return it.
17210 */
17211 ;
17212
17213 _proto.fetch = function fetch() {
17214 if (this.nextToken == null) {
17215 this.nextToken = this.gullet.expandNextToken();
17216 }
17217
17218 return this.nextToken;
17219 }
17220 /**
17221 * Switches between "text" and "math" modes.
17222 */
17223 ;
17224
17225 _proto.switchMode = function switchMode(newMode) {
17226 this.mode = newMode;
17227 this.gullet.switchMode(newMode);
17228 }
17229 /**
17230 * Main parsing function, which parses an entire input.
17231 */
17232 ;
17233
17234 _proto.parse = function parse() {
17235 if (!this.settings.globalGroup) {
17236 // Create a group namespace for the math expression.
17237 // (LaTeX creates a new group for every $...$, $$...$$, \[...\].)
17238 this.gullet.beginGroup();
17239 } // Use old \color behavior (same as LaTeX's \textcolor) if requested.
17240 // We do this within the group for the math expression, so it doesn't
17241 // pollute settings.macros.
17242
17243
17244 if (this.settings.colorIsTextColor) {
17245 this.gullet.macros.set("\\color", "\\textcolor");
17246 }
17247
17248 try {
17249 // Try to parse the input
17250 var parse = this.parseExpression(false); // If we succeeded, make sure there's an EOF at the end
17251
17252 this.expect("EOF"); // End the group namespace for the expression
17253
17254 if (!this.settings.globalGroup) {
17255 this.gullet.endGroup();
17256 }
17257
17258 return parse; // Close any leftover groups in case of a parse error.
17259 } finally {
17260 this.gullet.endGroups();
17261 }
17262 }
17263 /**
17264 * Fully parse a separate sequence of tokens as a separate job.
17265 * Tokens should be specified in reverse order, as in a MacroDefinition.
17266 */
17267 ;
17268
17269 _proto.subparse = function subparse(tokens) {
17270 // Save the next token from the current job.
17271 var oldToken = this.nextToken;
17272 this.consume(); // Run the new job, terminating it with an excess '}'
17273
17274 this.gullet.pushToken(new Token("}"));
17275 this.gullet.pushTokens(tokens);
17276 var parse = this.parseExpression(false);
17277 this.expect("}"); // Restore the next token from the current job.
17278
17279 this.nextToken = oldToken;
17280 return parse;
17281 };
17282
17283 /**
17284 * Parses an "expression", which is a list of atoms.
17285 *
17286 * `breakOnInfix`: Should the parsing stop when we hit infix nodes? This
17287 * happens when functions have higher precendence han infix
17288 * nodes in implicit parses.
17289 *
17290 * `breakOnTokenText`: The text of the token that the expression should end
17291 * with, or `null` if something else should end the
17292 * expression.
17293 */
17294 _proto.parseExpression = function parseExpression(breakOnInfix, breakOnTokenText) {
17295 var body = []; // Keep adding atoms to the body until we can't parse any more atoms (either
17296 // we reached the end, a }, or a \right)
17297
17298 while (true) {
17299 // Ignore spaces in math mode
17300 if (this.mode === "math") {
17301 this.consumeSpaces();
17302 }
17303
17304 var lex = this.fetch();
17305
17306 if (Parser.endOfExpression.indexOf(lex.text) !== -1) {
17307 break;
17308 }
17309
17310 if (breakOnTokenText && lex.text === breakOnTokenText) {
17311 break;
17312 }
17313
17314 if (breakOnInfix && src_functions[lex.text] && src_functions[lex.text].infix) {
17315 break;
17316 }
17317
17318 var atom = this.parseAtom(breakOnTokenText);
17319
17320 if (!atom) {
17321 break;
17322 } else if (atom.type === "internal") {
17323 continue;
17324 }
17325
17326 body.push(atom);
17327 }
17328
17329 if (this.mode === "text") {
17330 this.formLigatures(body);
17331 }
17332
17333 return this.handleInfixNodes(body);
17334 }
17335 /**
17336 * Rewrites infix operators such as \over with corresponding commands such
17337 * as \frac.
17338 *
17339 * There can only be one infix operator per group. If there's more than one
17340 * then the expression is ambiguous. This can be resolved by adding {}.
17341 */
17342 ;
17343
17344 _proto.handleInfixNodes = function handleInfixNodes(body) {
17345 var overIndex = -1;
17346 var funcName;
17347
17348 for (var i = 0; i < body.length; i++) {
17349 if (body[i].type === "infix") {
17350 if (overIndex !== -1) {
17351 throw new src_ParseError("only one infix operator per group", body[i].token);
17352 }
17353
17354 overIndex = i;
17355 funcName = body[i].replaceWith;
17356 }
17357 }
17358
17359 if (overIndex !== -1 && funcName) {
17360 var numerNode;
17361 var denomNode;
17362 var numerBody = body.slice(0, overIndex);
17363 var denomBody = body.slice(overIndex + 1);
17364
17365 if (numerBody.length === 1 && numerBody[0].type === "ordgroup") {
17366 numerNode = numerBody[0];
17367 } else {
17368 numerNode = {
17369 type: "ordgroup",
17370 mode: this.mode,
17371 body: numerBody
17372 };
17373 }
17374
17375 if (denomBody.length === 1 && denomBody[0].type === "ordgroup") {
17376 denomNode = denomBody[0];
17377 } else {
17378 denomNode = {
17379 type: "ordgroup",
17380 mode: this.mode,
17381 body: denomBody
17382 };
17383 }
17384
17385 var node;
17386
17387 if (funcName === "\\\\abovefrac") {
17388 node = this.callFunction(funcName, [numerNode, body[overIndex], denomNode], []);
17389 } else {
17390 node = this.callFunction(funcName, [numerNode, denomNode], []);
17391 }
17392
17393 return [node];
17394 } else {
17395 return body;
17396 }
17397 }
17398 /**
17399 * Handle a subscript or superscript with nice errors.
17400 */
17401 ;
17402
17403 _proto.handleSupSubscript = function handleSupSubscript(name // For error reporting.
17404 ) {
17405 var symbolToken = this.fetch();
17406 var symbol = symbolToken.text;
17407 this.consume();
17408 this.consumeSpaces(); // ignore spaces before sup/subscript argument
17409
17410 var group = this.parseGroup(name);
17411
17412 if (!group) {
17413 throw new src_ParseError("Expected group after '" + symbol + "'", symbolToken);
17414 }
17415
17416 return group;
17417 }
17418 /**
17419 * Converts the textual input of an unsupported command into a text node
17420 * contained within a color node whose color is determined by errorColor
17421 */
17422 ;
17423
17424 _proto.formatUnsupportedCmd = function formatUnsupportedCmd(text) {
17425 var textordArray = [];
17426
17427 for (var i = 0; i < text.length; i++) {
17428 textordArray.push({
17429 type: "textord",
17430 mode: "text",
17431 text: text[i]
17432 });
17433 }
17434
17435 var textNode = {
17436 type: "text",
17437 mode: this.mode,
17438 body: textordArray
17439 };
17440 var colorNode = {
17441 type: "color",
17442 mode: this.mode,
17443 color: this.settings.errorColor,
17444 body: [textNode]
17445 };
17446 return colorNode;
17447 }
17448 /**
17449 * Parses a group with optional super/subscripts.
17450 */
17451 ;
17452
17453 _proto.parseAtom = function parseAtom(breakOnTokenText) {
17454 // The body of an atom is an implicit group, so that things like
17455 // \left(x\right)^2 work correctly.
17456 var base = this.parseGroup("atom", breakOnTokenText); // In text mode, we don't have superscripts or subscripts
17457
17458 if (this.mode === "text") {
17459 return base;
17460 } // Note that base may be empty (i.e. null) at this point.
17461
17462
17463 var superscript;
17464 var subscript;
17465
17466 while (true) {
17467 // Guaranteed in math mode, so eat any spaces first.
17468 this.consumeSpaces(); // Lex the first token
17469
17470 var lex = this.fetch();
17471
17472 if (lex.text === "\\limits" || lex.text === "\\nolimits") {
17473 // We got a limit control
17474 if (base && base.type === "op") {
17475 var limits = lex.text === "\\limits";
17476 base.limits = limits;
17477 base.alwaysHandleSupSub = true;
17478 } else if (base && base.type === "operatorname") {
17479 if (base.alwaysHandleSupSub) {
17480 base.limits = lex.text === "\\limits";
17481 }
17482 } else {
17483 throw new src_ParseError("Limit controls must follow a math operator", lex);
17484 }
17485
17486 this.consume();
17487 } else if (lex.text === "^") {
17488 // We got a superscript start
17489 if (superscript) {
17490 throw new src_ParseError("Double superscript", lex);
17491 }
17492
17493 superscript = this.handleSupSubscript("superscript");
17494 } else if (lex.text === "_") {
17495 // We got a subscript start
17496 if (subscript) {
17497 throw new src_ParseError("Double subscript", lex);
17498 }
17499
17500 subscript = this.handleSupSubscript("subscript");
17501 } else if (lex.text === "'") {
17502 // We got a prime
17503 if (superscript) {
17504 throw new src_ParseError("Double superscript", lex);
17505 }
17506
17507 var prime = {
17508 type: "textord",
17509 mode: this.mode,
17510 text: "\\prime"
17511 }; // Many primes can be grouped together, so we handle this here
17512
17513 var primes = [prime];
17514 this.consume(); // Keep lexing tokens until we get something that's not a prime
17515
17516 while (this.fetch().text === "'") {
17517 // For each one, add another prime to the list
17518 primes.push(prime);
17519 this.consume();
17520 } // If there's a superscript following the primes, combine that
17521 // superscript in with the primes.
17522
17523
17524 if (this.fetch().text === "^") {
17525 primes.push(this.handleSupSubscript("superscript"));
17526 } // Put everything into an ordgroup as the superscript
17527
17528
17529 superscript = {
17530 type: "ordgroup",
17531 mode: this.mode,
17532 body: primes
17533 };
17534 } else {
17535 // If it wasn't ^, _, or ', stop parsing super/subscripts
17536 break;
17537 }
17538 } // Base must be set if superscript or subscript are set per logic above,
17539 // but need to check here for type check to pass.
17540
17541
17542 if (superscript || subscript) {
17543 // If we got either a superscript or subscript, create a supsub
17544 return {
17545 type: "supsub",
17546 mode: this.mode,
17547 base: base,
17548 sup: superscript,
17549 sub: subscript
17550 };
17551 } else {
17552 // Otherwise return the original body
17553 return base;
17554 }
17555 }
17556 /**
17557 * Parses an entire function, including its base and all of its arguments.
17558 */
17559 ;
17560
17561 _proto.parseFunction = function parseFunction(breakOnTokenText, name // For determining its context
17562 ) {
17563 var token = this.fetch();
17564 var func = token.text;
17565 var funcData = src_functions[func];
17566
17567 if (!funcData) {
17568 return null;
17569 }
17570
17571 this.consume(); // consume command token
17572
17573 if (name && name !== "atom" && !funcData.allowedInArgument) {
17574 throw new src_ParseError("Got function '" + func + "' with no arguments" + (name ? " as " + name : ""), token);
17575 } else if (this.mode === "text" && !funcData.allowedInText) {
17576 throw new src_ParseError("Can't use function '" + func + "' in text mode", token);
17577 } else if (this.mode === "math" && funcData.allowedInMath === false) {
17578 throw new src_ParseError("Can't use function '" + func + "' in math mode", token);
17579 }
17580
17581 var _this$parseArguments = this.parseArguments(func, funcData),
17582 args = _this$parseArguments.args,
17583 optArgs = _this$parseArguments.optArgs;
17584
17585 return this.callFunction(func, args, optArgs, token, breakOnTokenText);
17586 }
17587 /**
17588 * Call a function handler with a suitable context and arguments.
17589 */
17590 ;
17591
17592 _proto.callFunction = function callFunction(name, args, optArgs, token, breakOnTokenText) {
17593 var context = {
17594 funcName: name,
17595 parser: this,
17596 token: token,
17597 breakOnTokenText: breakOnTokenText
17598 };
17599 var func = src_functions[name];
17600
17601 if (func && func.handler) {
17602 return func.handler(context, args, optArgs);
17603 } else {
17604 throw new src_ParseError("No function handler for " + name);
17605 }
17606 }
17607 /**
17608 * Parses the arguments of a function or environment
17609 */
17610 ;
17611
17612 _proto.parseArguments = function parseArguments(func, // Should look like "\name" or "\begin{name}".
17613 funcData) {
17614 var totalArgs = funcData.numArgs + funcData.numOptionalArgs;
17615
17616 if (totalArgs === 0) {
17617 return {
17618 args: [],
17619 optArgs: []
17620 };
17621 }
17622
17623 var args = [];
17624 var optArgs = [];
17625
17626 for (var i = 0; i < totalArgs; i++) {
17627 var argType = funcData.argTypes && funcData.argTypes[i];
17628 var isOptional = i < funcData.numOptionalArgs;
17629
17630 if (funcData.primitive && argType == null || // \sqrt expands into primitive if optional argument doesn't exist
17631 funcData.type === "sqrt" && i === 1 && optArgs[0] == null) {
17632 argType = "primitive";
17633 }
17634
17635 var arg = this.parseGroupOfType("argument to '" + func + "'", argType, isOptional);
17636
17637 if (isOptional) {
17638 optArgs.push(arg);
17639 } else if (arg != null) {
17640 args.push(arg);
17641 } else {
17642 // should be unreachable
17643 throw new src_ParseError("Null argument, please report this as a bug");
17644 }
17645 }
17646
17647 return {
17648 args: args,
17649 optArgs: optArgs
17650 };
17651 }
17652 /**
17653 * Parses a group when the mode is changing.
17654 */
17655 ;
17656
17657 _proto.parseGroupOfType = function parseGroupOfType(name, type, optional) {
17658 switch (type) {
17659 case "color":
17660 return this.parseColorGroup(optional);
17661
17662 case "size":
17663 return this.parseSizeGroup(optional);
17664
17665 case "url":
17666 return this.parseUrlGroup(optional);
17667
17668 case "math":
17669 case "text":
17670 return this.parseArgumentGroup(optional, type);
17671
17672 case "hbox":
17673 {
17674 // hbox argument type wraps the argument in the equivalent of
17675 // \hbox, which is like \text but switching to \textstyle size.
17676 var group = this.parseArgumentGroup(optional, "text");
17677 return group != null ? {
17678 type: "styling",
17679 mode: group.mode,
17680 body: [group],
17681 style: "text" // simulate \textstyle
17682
17683 } : null;
17684 }
17685
17686 case "raw":
17687 {
17688 var token = this.parseStringGroup("raw", optional);
17689 return token != null ? {
17690 type: "raw",
17691 mode: "text",
17692 string: token.text
17693 } : null;
17694 }
17695
17696 case "primitive":
17697 {
17698 if (optional) {
17699 throw new src_ParseError("A primitive argument cannot be optional");
17700 }
17701
17702 var _group = this.parseGroup(name);
17703
17704 if (_group == null) {
17705 throw new src_ParseError("Expected group as " + name, this.fetch());
17706 }
17707
17708 return _group;
17709 }
17710
17711 case "original":
17712 case null:
17713 case undefined:
17714 return this.parseArgumentGroup(optional);
17715
17716 default:
17717 throw new src_ParseError("Unknown group type as " + name, this.fetch());
17718 }
17719 }
17720 /**
17721 * Discard any space tokens, fetching the next non-space token.
17722 */
17723 ;
17724
17725 _proto.consumeSpaces = function consumeSpaces() {
17726 while (this.fetch().text === " ") {
17727 this.consume();
17728 }
17729 }
17730 /**
17731 * Parses a group, essentially returning the string formed by the
17732 * brace-enclosed tokens plus some position information.
17733 */
17734 ;
17735
17736 _proto.parseStringGroup = function parseStringGroup(modeName, // Used to describe the mode in error messages.
17737 optional) {
17738 var argToken = this.gullet.scanArgument(optional);
17739
17740 if (argToken == null) {
17741 return null;
17742 }
17743
17744 var str = "";
17745 var nextToken;
17746
17747 while ((nextToken = this.fetch()).text !== "EOF") {
17748 str += nextToken.text;
17749 this.consume();
17750 }
17751
17752 this.consume(); // consume the end of the argument
17753
17754 argToken.text = str;
17755 return argToken;
17756 }
17757 /**
17758 * Parses a regex-delimited group: the largest sequence of tokens
17759 * whose concatenated strings match `regex`. Returns the string
17760 * formed by the tokens plus some position information.
17761 */
17762 ;
17763
17764 _proto.parseRegexGroup = function parseRegexGroup(regex, modeName // Used to describe the mode in error messages.
17765 ) {
17766 var firstToken = this.fetch();
17767 var lastToken = firstToken;
17768 var str = "";
17769 var nextToken;
17770
17771 while ((nextToken = this.fetch()).text !== "EOF" && regex.test(str + nextToken.text)) {
17772 lastToken = nextToken;
17773 str += lastToken.text;
17774 this.consume();
17775 }
17776
17777 if (str === "") {
17778 throw new src_ParseError("Invalid " + modeName + ": '" + firstToken.text + "'", firstToken);
17779 }
17780
17781 return firstToken.range(lastToken, str);
17782 }
17783 /**
17784 * Parses a color description.
17785 */
17786 ;
17787
17788 _proto.parseColorGroup = function parseColorGroup(optional) {
17789 var res = this.parseStringGroup("color", optional);
17790
17791 if (res == null) {
17792 return null;
17793 }
17794
17795 var match = /^(#[a-f0-9]{3}|#?[a-f0-9]{6}|[a-z]+)$/i.exec(res.text);
17796
17797 if (!match) {
17798 throw new src_ParseError("Invalid color: '" + res.text + "'", res);
17799 }
17800
17801 var color = match[0];
17802
17803 if (/^[0-9a-f]{6}$/i.test(color)) {
17804 // We allow a 6-digit HTML color spec without a leading "#".
17805 // This follows the xcolor package's HTML color model.
17806 // Predefined color names are all missed by this RegEx pattern.
17807 color = "#" + color;
17808 }
17809
17810 return {
17811 type: "color-token",
17812 mode: this.mode,
17813 color: color
17814 };
17815 }
17816 /**
17817 * Parses a size specification, consisting of magnitude and unit.
17818 */
17819 ;
17820
17821 _proto.parseSizeGroup = function parseSizeGroup(optional) {
17822 var res;
17823 var isBlank = false; // don't expand before parseStringGroup
17824
17825 this.gullet.consumeSpaces();
17826
17827 if (!optional && this.gullet.future().text !== "{") {
17828 res = this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/, "size");
17829 } else {
17830 res = this.parseStringGroup("size", optional);
17831 }
17832
17833 if (!res) {
17834 return null;
17835 }
17836
17837 if (!optional && res.text.length === 0) {
17838 // Because we've tested for what is !optional, this block won't
17839 // affect \kern, \hspace, etc. It will capture the mandatory arguments
17840 // to \genfrac and \above.
17841 res.text = "0pt"; // Enable \above{}
17842
17843 isBlank = true; // This is here specifically for \genfrac
17844 }
17845
17846 var match = /([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(res.text);
17847
17848 if (!match) {
17849 throw new src_ParseError("Invalid size: '" + res.text + "'", res);
17850 }
17851
17852 var data = {
17853 number: +(match[1] + match[2]),
17854 // sign + magnitude, cast to number
17855 unit: match[3]
17856 };
17857
17858 if (!validUnit(data)) {
17859 throw new src_ParseError("Invalid unit: '" + data.unit + "'", res);
17860 }
17861
17862 return {
17863 type: "size",
17864 mode: this.mode,
17865 value: data,
17866 isBlank: isBlank
17867 };
17868 }
17869 /**
17870 * Parses an URL, checking escaped letters and allowed protocols,
17871 * and setting the catcode of % as an active character (as in \hyperref).
17872 */
17873 ;
17874
17875 _proto.parseUrlGroup = function parseUrlGroup(optional) {
17876 this.gullet.lexer.setCatcode("%", 13); // active character
17877
17878 this.gullet.lexer.setCatcode("~", 12); // other character
17879
17880 var res = this.parseStringGroup("url", optional);
17881 this.gullet.lexer.setCatcode("%", 14); // comment character
17882
17883 this.gullet.lexer.setCatcode("~", 13); // active character
17884
17885 if (res == null) {
17886 return null;
17887 } // hyperref package allows backslashes alone in href, but doesn't
17888 // generate valid links in such cases; we interpret this as
17889 // "undefined" behaviour, and keep them as-is. Some browser will
17890 // replace backslashes with forward slashes.
17891
17892
17893 var url = res.text.replace(/\\([#$%&~_^{}])/g, '$1');
17894 return {
17895 type: "url",
17896 mode: this.mode,
17897 url: url
17898 };
17899 }
17900 /**
17901 * Parses an argument with the mode specified.
17902 */
17903 ;
17904
17905 _proto.parseArgumentGroup = function parseArgumentGroup(optional, mode) {
17906 var argToken = this.gullet.scanArgument(optional);
17907
17908 if (argToken == null) {
17909 return null;
17910 }
17911
17912 var outerMode = this.mode;
17913
17914 if (mode) {
17915 // Switch to specified mode
17916 this.switchMode(mode);
17917 }
17918
17919 this.gullet.beginGroup();
17920 var expression = this.parseExpression(false, "EOF"); // TODO: find an alternative way to denote the end
17921
17922 this.expect("EOF"); // expect the end of the argument
17923
17924 this.gullet.endGroup();
17925 var result = {
17926 type: "ordgroup",
17927 mode: this.mode,
17928 loc: argToken.loc,
17929 body: expression
17930 };
17931
17932 if (mode) {
17933 // Switch mode back
17934 this.switchMode(outerMode);
17935 }
17936
17937 return result;
17938 }
17939 /**
17940 * Parses an ordinary group, which is either a single nucleus (like "x")
17941 * or an expression in braces (like "{x+y}") or an implicit group, a group
17942 * that starts at the current position, and ends right before a higher explicit
17943 * group ends, or at EOF.
17944 */
17945 ;
17946
17947 _proto.parseGroup = function parseGroup(name, // For error reporting.
17948 breakOnTokenText) {
17949 var firstToken = this.fetch();
17950 var text = firstToken.text;
17951 var result; // Try to parse an open brace or \begingroup
17952
17953 if (text === "{" || text === "\\begingroup") {
17954 this.consume();
17955 var groupEnd = text === "{" ? "}" : "\\endgroup";
17956 this.gullet.beginGroup(); // If we get a brace, parse an expression
17957
17958 var expression = this.parseExpression(false, groupEnd);
17959 var lastToken = this.fetch();
17960 this.expect(groupEnd); // Check that we got a matching closing brace
17961
17962 this.gullet.endGroup();
17963 result = {
17964 type: "ordgroup",
17965 mode: this.mode,
17966 loc: SourceLocation.range(firstToken, lastToken),
17967 body: expression,
17968 // A group formed by \begingroup...\endgroup is a semi-simple group
17969 // which doesn't affect spacing in math mode, i.e., is transparent.
17970 // https://tex.stackexchange.com/questions/1930/when-should-one-
17971 // use-begingroup-instead-of-bgroup
17972 semisimple: text === "\\begingroup" || undefined
17973 };
17974 } else {
17975 // If there exists a function with this name, parse the function.
17976 // Otherwise, just return a nucleus
17977 result = this.parseFunction(breakOnTokenText, name) || this.parseSymbol();
17978
17979 if (result == null && text[0] === "\\" && !implicitCommands.hasOwnProperty(text)) {
17980 if (this.settings.throwOnError) {
17981 throw new src_ParseError("Undefined control sequence: " + text, firstToken);
17982 }
17983
17984 result = this.formatUnsupportedCmd(text);
17985 this.consume();
17986 }
17987 }
17988
17989 return result;
17990 }
17991 /**
17992 * Form ligature-like combinations of characters for text mode.
17993 * This includes inputs like "--", "---", "``" and "''".
17994 * The result will simply replace multiple textord nodes with a single
17995 * character in each value by a single textord node having multiple
17996 * characters in its value. The representation is still ASCII source.
17997 * The group will be modified in place.
17998 */
17999 ;
18000
18001 _proto.formLigatures = function formLigatures(group) {
18002 var n = group.length - 1;
18003
18004 for (var i = 0; i < n; ++i) {
18005 var a = group[i]; // $FlowFixMe: Not every node type has a `text` property.
18006
18007 var v = a.text;
18008
18009 if (v === "-" && group[i + 1].text === "-") {
18010 if (i + 1 < n && group[i + 2].text === "-") {
18011 group.splice(i, 3, {
18012 type: "textord",
18013 mode: "text",
18014 loc: SourceLocation.range(a, group[i + 2]),
18015 text: "---"
18016 });
18017 n -= 2;
18018 } else {
18019 group.splice(i, 2, {
18020 type: "textord",
18021 mode: "text",
18022 loc: SourceLocation.range(a, group[i + 1]),
18023 text: "--"
18024 });
18025 n -= 1;
18026 }
18027 }
18028
18029 if ((v === "'" || v === "`") && group[i + 1].text === v) {
18030 group.splice(i, 2, {
18031 type: "textord",
18032 mode: "text",
18033 loc: SourceLocation.range(a, group[i + 1]),
18034 text: v + v
18035 });
18036 n -= 1;
18037 }
18038 }
18039 }
18040 /**
18041 * Parse a single symbol out of the string. Here, we handle single character
18042 * symbols and special functions like \verb.
18043 */
18044 ;
18045
18046 _proto.parseSymbol = function parseSymbol() {
18047 var nucleus = this.fetch();
18048 var text = nucleus.text;
18049
18050 if (/^\\verb[^a-zA-Z]/.test(text)) {
18051 this.consume();
18052 var arg = text.slice(5);
18053 var star = arg.charAt(0) === "*";
18054
18055 if (star) {
18056 arg = arg.slice(1);
18057 } // Lexer's tokenRegex is constructed to always have matching
18058 // first/last characters.
18059
18060
18061 if (arg.length < 2 || arg.charAt(0) !== arg.slice(-1)) {
18062 throw new src_ParseError("\\verb assertion failed --\n please report what input caused this bug");
18063 }
18064
18065 arg = arg.slice(1, -1); // remove first and last char
18066
18067 return {
18068 type: "verb",
18069 mode: "text",
18070 body: arg,
18071 star: star
18072 };
18073 } // At this point, we should have a symbol, possibly with accents.
18074 // First expand any accented base symbol according to unicodeSymbols.
18075
18076
18077 if (unicodeSymbols.hasOwnProperty(text[0]) && !src_symbols[this.mode][text[0]]) {
18078 // This behavior is not strict (XeTeX-compatible) in math mode.
18079 if (this.settings.strict && this.mode === "math") {
18080 this.settings.reportNonstrict("unicodeTextInMathMode", "Accented Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus);
18081 }
18082
18083 text = unicodeSymbols[text[0]] + text.substr(1);
18084 } // Strip off any combining characters
18085
18086
18087 var match = combiningDiacriticalMarksEndRegex.exec(text);
18088
18089 if (match) {
18090 text = text.substring(0, match.index);
18091
18092 if (text === 'i') {
18093 text = "\u0131"; // dotless i, in math and text mode
18094 } else if (text === 'j') {
18095 text = "\u0237"; // dotless j, in math and text mode
18096 }
18097 } // Recognize base symbol
18098
18099
18100 var symbol;
18101
18102 if (src_symbols[this.mode][text]) {
18103 if (this.settings.strict && this.mode === 'math' && extraLatin.indexOf(text) >= 0) {
18104 this.settings.reportNonstrict("unicodeTextInMathMode", "Latin-1/Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus);
18105 }
18106
18107 var group = src_symbols[this.mode][text].group;
18108 var loc = SourceLocation.range(nucleus);
18109 var s;
18110
18111 if (ATOMS.hasOwnProperty(group)) {
18112 // $FlowFixMe
18113 var family = group;
18114 s = {
18115 type: "atom",
18116 mode: this.mode,
18117 family: family,
18118 loc: loc,
18119 text: text
18120 };
18121 } else {
18122 // $FlowFixMe
18123 s = {
18124 type: group,
18125 mode: this.mode,
18126 loc: loc,
18127 text: text
18128 };
18129 } // $FlowFixMe
18130
18131
18132 symbol = s;
18133 } else if (text.charCodeAt(0) >= 0x80) {
18134 // no symbol for e.g. ^
18135 if (this.settings.strict) {
18136 if (!supportedCodepoint(text.charCodeAt(0))) {
18137 this.settings.reportNonstrict("unknownSymbol", "Unrecognized Unicode character \"" + text[0] + "\"" + (" (" + text.charCodeAt(0) + ")"), nucleus);
18138 } else if (this.mode === "math") {
18139 this.settings.reportNonstrict("unicodeTextInMathMode", "Unicode text character \"" + text[0] + "\" used in math mode", nucleus);
18140 }
18141 } // All nonmathematical Unicode characters are rendered as if they
18142 // are in text mode (wrapped in \text) because that's what it
18143 // takes to render them in LaTeX. Setting `mode: this.mode` is
18144 // another natural choice (the user requested math mode), but
18145 // this makes it more difficult for getCharacterMetrics() to
18146 // distinguish Unicode characters without metrics and those for
18147 // which we want to simulate the letter M.
18148
18149
18150 symbol = {
18151 type: "textord",
18152 mode: "text",
18153 loc: SourceLocation.range(nucleus),
18154 text: text
18155 };
18156 } else {
18157 return null; // EOF, ^, _, {, }, etc.
18158 }
18159
18160 this.consume(); // Transform combining characters into accents
18161
18162 if (match) {
18163 for (var i = 0; i < match[0].length; i++) {
18164 var accent = match[0][i];
18165
18166 if (!unicodeAccents[accent]) {
18167 throw new src_ParseError("Unknown accent ' " + accent + "'", nucleus);
18168 }
18169
18170 var command = unicodeAccents[accent][this.mode] || unicodeAccents[accent].text;
18171
18172 if (!command) {
18173 throw new src_ParseError("Accent " + accent + " unsupported in " + this.mode + " mode", nucleus);
18174 }
18175
18176 symbol = {
18177 type: "accent",
18178 mode: this.mode,
18179 loc: SourceLocation.range(nucleus),
18180 label: command,
18181 isStretchy: false,
18182 isShifty: true,
18183 // $FlowFixMe
18184 base: symbol
18185 };
18186 }
18187 } // $FlowFixMe
18188
18189
18190 return symbol;
18191 };
18192
18193 return Parser;
18194}();
18195
18196Parser.endOfExpression = ["}", "\\endgroup", "\\end", "\\right", "&"];
18197
18198;// CONCATENATED MODULE: ./src/parseTree.js
18199/**
18200 * Provides a single function for parsing an expression using a Parser
18201 * TODO(emily): Remove this
18202 */
18203
18204
18205
18206
18207/**
18208 * Parses an expression using a Parser, then returns the parsed result.
18209 */
18210var parseTree = function parseTree(toParse, settings) {
18211 if (!(typeof toParse === 'string' || toParse instanceof String)) {
18212 throw new TypeError('KaTeX can only parse string typed expression');
18213 }
18214
18215 var parser = new Parser(toParse, settings); // Blank out any \df@tag to avoid spurious "Duplicate \tag" errors
18216
18217 delete parser.gullet.macros.current["\\df@tag"];
18218 var tree = parser.parse(); // Prevent a color definition from persisting between calls to katex.render().
18219
18220 delete parser.gullet.macros.current["\\current@color"];
18221 delete parser.gullet.macros.current["\\color"]; // If the input used \tag, it will set the \df@tag macro to the tag.
18222 // In this case, we separately parse the tag and wrap the tree.
18223
18224 if (parser.gullet.macros.get("\\df@tag")) {
18225 if (!settings.displayMode) {
18226 throw new src_ParseError("\\tag works only in display equations");
18227 }
18228
18229 tree = [{
18230 type: "tag",
18231 mode: "text",
18232 body: tree,
18233 tag: parser.subparse([new Token("\\df@tag")])
18234 }];
18235 }
18236
18237 return tree;
18238};
18239
18240/* harmony default export */ var src_parseTree = (parseTree);
18241;// CONCATENATED MODULE: ./katex.js
18242/* eslint no-console:0 */
18243
18244/**
18245 * This is the main entry point for KaTeX. Here, we expose functions for
18246 * rendering expressions either to DOM nodes or to markup strings.
18247 *
18248 * We also expose the ParseError class to check if errors thrown from KaTeX are
18249 * errors in the expression, or errors in javascript handling.
18250 */
18251
18252
18253
18254
18255
18256
18257
18258
18259
18260
18261/**
18262 * Parse and build an expression, and place that expression in the DOM node
18263 * given.
18264 */
18265var render = function render(expression, baseNode, options) {
18266 baseNode.textContent = "";
18267 var node = renderToDomTree(expression, options).toNode();
18268 baseNode.appendChild(node);
18269}; // KaTeX's styles don't work properly in quirks mode. Print out an error, and
18270// disable rendering.
18271
18272
18273if (typeof document !== "undefined") {
18274 if (document.compatMode !== "CSS1Compat") {
18275 typeof console !== "undefined" && console.warn("Warning: KaTeX doesn't work in quirks mode. Make sure your " + "website has a suitable doctype.");
18276
18277 render = function render() {
18278 throw new src_ParseError("KaTeX doesn't work in quirks mode.");
18279 };
18280 }
18281}
18282/**
18283 * Parse and build an expression, and return the markup for that.
18284 */
18285
18286
18287var renderToString = function renderToString(expression, options) {
18288 var markup = renderToDomTree(expression, options).toMarkup();
18289 return markup;
18290};
18291/**
18292 * Parse an expression and return the parse tree.
18293 */
18294
18295
18296var generateParseTree = function generateParseTree(expression, options) {
18297 var settings = new Settings(options);
18298 return src_parseTree(expression, settings);
18299};
18300/**
18301 * If the given error is a KaTeX ParseError and options.throwOnError is false,
18302 * renders the invalid LaTeX as a span with hover title giving the KaTeX
18303 * error message. Otherwise, simply throws the error.
18304 */
18305
18306
18307var renderError = function renderError(error, expression, options) {
18308 if (options.throwOnError || !(error instanceof src_ParseError)) {
18309 throw error;
18310 }
18311
18312 var node = buildCommon.makeSpan(["katex-error"], [new SymbolNode(expression)]);
18313 node.setAttribute("title", error.toString());
18314 node.setAttribute("style", "color:" + options.errorColor);
18315 return node;
18316};
18317/**
18318 * Generates and returns the katex build tree. This is used for advanced
18319 * use cases (like rendering to custom output).
18320 */
18321
18322
18323var renderToDomTree = function renderToDomTree(expression, options) {
18324 var settings = new Settings(options);
18325
18326 try {
18327 var tree = src_parseTree(expression, settings);
18328 return buildTree(tree, expression, settings);
18329 } catch (error) {
18330 return renderError(error, expression, settings);
18331 }
18332};
18333/**
18334 * Generates and returns the katex build tree, with just HTML (no MathML).
18335 * This is used for advanced use cases (like rendering to custom output).
18336 */
18337
18338
18339var renderToHTMLTree = function renderToHTMLTree(expression, options) {
18340 var settings = new Settings(options);
18341
18342 try {
18343 var tree = src_parseTree(expression, settings);
18344 return buildHTMLTree(tree, expression, settings);
18345 } catch (error) {
18346 return renderError(error, expression, settings);
18347 }
18348};
18349
18350/* harmony default export */ var katex = ({
18351 /**
18352 * Current KaTeX version
18353 */
18354 version: "0.15.3",
18355
18356 /**
18357 * Renders the given LaTeX into an HTML+MathML combination, and adds
18358 * it as a child to the specified DOM node.
18359 */
18360 render: render,
18361
18362 /**
18363 * Renders the given LaTeX into an HTML+MathML combination string,
18364 * for sending to the client.
18365 */
18366 renderToString: renderToString,
18367
18368 /**
18369 * KaTeX error, usually during parsing.
18370 */
18371 ParseError: src_ParseError,
18372
18373 /**
18374 * The shema of Settings
18375 */
18376 SETTINGS_SCHEMA: SETTINGS_SCHEMA,
18377
18378 /**
18379 * Parses the given LaTeX into KaTeX's internal parse tree structure,
18380 * without rendering to HTML or MathML.
18381 *
18382 * NOTE: This method is not currently recommended for public use.
18383 * The internal tree representation is unstable and is very likely
18384 * to change. Use at your own risk.
18385 */
18386 __parse: generateParseTree,
18387
18388 /**
18389 * Renders the given LaTeX into an HTML+MathML internal DOM tree
18390 * representation, without flattening that representation to a string.
18391 *
18392 * NOTE: This method is not currently recommended for public use.
18393 * The internal tree representation is unstable and is very likely
18394 * to change. Use at your own risk.
18395 */
18396 __renderToDomTree: renderToDomTree,
18397
18398 /**
18399 * Renders the given LaTeX into an HTML internal DOM tree representation,
18400 * without MathML and without flattening that representation to a string.
18401 *
18402 * NOTE: This method is not currently recommended for public use.
18403 * The internal tree representation is unstable and is very likely
18404 * to change. Use at your own risk.
18405 */
18406 __renderToHTMLTree: renderToHTMLTree,
18407
18408 /**
18409 * extends internal font metrics object with a new object
18410 * each key in the new object represents a font name
18411 */
18412 __setFontMetrics: setFontMetrics,
18413
18414 /**
18415 * adds a new symbol to builtin symbols table
18416 */
18417 __defineSymbol: defineSymbol,
18418
18419 /**
18420 * adds a new macro to builtin macro list
18421 */
18422 __defineMacro: defineMacro,
18423
18424 /**
18425 * Expose the dom tree node types, which can be useful for type checking nodes.
18426 *
18427 * NOTE: This method is not currently recommended for public use.
18428 * The internal tree representation is unstable and is very likely
18429 * to change. Use at your own risk.
18430 */
18431 __domTree: {
18432 Span: Span,
18433 Anchor: Anchor,
18434 SymbolNode: SymbolNode,
18435 SvgNode: SvgNode,
18436 PathNode: PathNode,
18437 LineNode: LineNode
18438 }
18439});
18440;// CONCATENATED MODULE: ./katex.webpack.js
18441/**
18442 * This is the webpack entry point for KaTeX. As ECMAScript, flow[1] and jest[2]
18443 * doesn't support CSS modules natively, a separate entry point is used and
18444 * it is not flowtyped.
18445 *
18446 * [1] https://gist.github.com/lambdahands/d19e0da96285b749f0ef
18447 * [2] https://facebook.github.io/jest/docs/en/webpack.html
18448 */
18449
18450
18451/* harmony default export */ var katex_webpack = (katex);
18452__webpack_exports__ = __webpack_exports__["default"];
18453/******/ return __webpack_exports__;
18454/******/ })()
18455;
18456});