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651 lines
20 KiB
651 lines
20 KiB
const streamFromMultiArray = require("../../src/streamfromarray_txt.js");
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const utils = require("../../src/utils");
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const assert = require("assert");
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const Scalar = require("ffjavascript").Scalar;
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const F1Field = require("ffjavascript").F1Field;
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const BigArray = require("../../src/bigarray");
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function ref2src(c) {
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if ((c[0] == "R")||(c[0] == "RI")) {
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return c[1];
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} else if (c[0] == "V") {
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return c[1].toString();
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} else if (c[0] == "C") {
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return `(ctx->circuit->constants + ${c[1]})`;
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} else if (c[0] == "CC") {
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return "__cIdx";
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} else {
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assert(false);
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}
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}
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class CodeBuilderC {
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constructor() {
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this.ops = [];
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}
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addComment(comment) {
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this.ops.push({op: "COMMENT", comment});
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}
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addBlock(block) {
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this.ops.push({op: "BLOCK", block});
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}
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calcOffset(dLabel, offsets) {
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this.ops.push({op: "CALCOFFSETS", dLabel, offsets});
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}
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assign(dLabel, src, sOffset) {
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this.ops.push({op: "ASSIGN", dLabel, src, sOffset});
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}
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getSubComponentOffset(dLabel, component, hash, hashLabel) {
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this.ops.push({op: "GETSUBCOMPONENTOFFSET", dLabel, component, hash, hashLabel});
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}
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getSubComponentSizes(dLabel, component, hash, hashLabel) {
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this.ops.push({op: "GETSUBCOMPONENTSIZES", dLabel, component, hash, hashLabel});
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}
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getSignalOffset(dLabel, component, hash, hashLabel) {
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this.ops.push({op: "GETSIGNALOFFSET", dLabel, component, hash, hashLabel});
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}
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getSignalSizes(dLabel, component, hash, hashLabel) {
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this.ops.push({op: "GETSIGNALSIZES", dLabel, component, hash, hashLabel});
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}
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setSignal(component, signal, value) {
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this.ops.push({op: "SETSIGNAL", component, signal, value});
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}
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getSignal(dLabel, component, signal) {
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this.ops.push({op: "GETSIGNAL", dLabel, component, signal});
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}
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copyN(dLabel, offset, src, n) {
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this.ops.push({op: "COPYN", dLabel, offset, src, n});
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}
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copyNRet(src, n) {
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this.ops.push({op: "COPYNRET", src, n});
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}
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fieldOp(dLabel, fOp, params) {
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this.ops.push({op: "FOP", dLabel, fOp, params});
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}
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ret() {
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this.ops.push({op: "RET"});
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}
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addLoop(condLabel, body) {
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this.ops.push({op: "LOOP", condLabel, body});
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}
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addIf(condLabel, thenCode, elseCode) {
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this.ops.push({op: "IF", condLabel, thenCode, elseCode});
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}
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fnCall(fnName, retLabel, params) {
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this.ops.push({op: "FNCALL", fnName, retLabel, params});
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}
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checkConstraint(a, b, strErr) {
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this.ops.push({op: "CHECKCONSTRAINT", a, b, strErr});
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}
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log(val) {
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this.ops.push({op: "LOG", val});
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}
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concat(cb) {
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this.ops.push(...cb.ops);
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}
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hasCode() {
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for (let i=0; i<this.ops.length; i++) {
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if (this.ops[i].op != "COMMENT") return true;
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}
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return false;
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}
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_buildOffset(offsets) {
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let rN=0;
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let S = "";
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offsets.forEach((o) => {
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if ((o[0][0] == "V") && (o[1][0]== "V")) {
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rN += o[0][1]*o[1][1];
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return;
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}
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let f="";
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if (o[0][0] == "V") {
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if (o[0][1]==0) return;
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f += o[0][1];
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} else if (o[0][0] == "RI") {
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if (o[0][1]==0) return;
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f += o[0][1];
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} else if (o[0][0] == "R") {
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f += `Fr_toInt(${o[0][1]})`;
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} else {
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assert(false);
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}
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if (o[1][0] == "V") {
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if (o[1][1]==0) return;
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if (o[1][1]>1) {
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f += "*" + o[1][1];
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}
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} else if (o[1][0] == "RS") {
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f += `*${o[1][1]}[${o[1][2]}]`;
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} else {
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assert(false);
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}
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if (S!="") S+= " + ";
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S += f;
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});
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if (rN>0) {
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S = `${rN} + ${S}`;
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}
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return S;
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}
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build(code) {
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this.ops.forEach( (o) => {
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if (o.op == "COMMENT") {
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code.push(`/* ${o.comment} */`);
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} else if (o.op == "BLOCK") {
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const codeBlock=[];
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o.block.build(codeBlock);
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code.push(utils.ident(codeBlock));
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} else if (o.op == "CALCOFFSETS") {
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code.push(`${o.dLabel} = ${this._buildOffset(o.offsets)};`);
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} else if (o.op == "ASSIGN") {
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const oS = ref2src(o.sOffset);
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if (oS != "0") {
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code.push(`${o.dLabel} = ${ref2src(o.src)} + ${oS};`);
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} else {
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code.push(`${o.dLabel} = ${ref2src(o.src)};`);
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}
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} else if (o.op == "GETSUBCOMPONENTOFFSET") {
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code.push(`${o.dLabel} = ctx->getSubComponentOffset(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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} else if (o.op == "GETSUBCOMPONENTSIZES") {
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code.push(`${o.dLabel} = ctx->getSubComponentSizes(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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} else if (o.op == "GETSIGNALOFFSET") {
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code.push(`${o.dLabel} = ctx->getSignalOffset(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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} else if (o.op == "GETSIGNALSIZES") {
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code.push(`${o.dLabel} = ctx->getSignalSizes(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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} else if (o.op == "SETSIGNAL") {
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code.push(`ctx->setSignal(__cIdx, ${ref2src(o.component)}, ${ref2src(o.signal)}, ${ref2src(o.value)});`);
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} else if (o.op == "GETSIGNAL") {
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code.push(`ctx->getSignal(__cIdx, ${ref2src(o.component)}, ${ref2src(o.signal)}, ${o.dLabel});`);
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} else if (o.op == "COPYN") {
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const oS = ref2src(o.offset);
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const dLabel = (oS != "0") ? (o.dLabel + "+" + oS) : o.dLabel;
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code.push(`Fr_copyn(${dLabel}, ${ref2src(o.src)}, ${o.n});`);
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} else if (o.op == "COPYNRET") {
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code.push(`Fr_copyn(__retValue, ${ref2src(o.src)}, ${o.n});`);
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} else if (o.op == "RET") {
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code.push("goto returnFunc;");
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} else if (o.op == "FOP") {
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let paramsS = "";
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for (let i=0; i<o.params.length; i++) {
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if (i>0) paramsS += ", ";
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paramsS += ref2src(o.params[i]);
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}
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code.push(`Fr_${o.fOp}(${o.dLabel}, ${paramsS});`);
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} else if (o.op == "LOOP") {
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code.push(`while (Fr_isTrue(${o.condLabel})) {`);
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const body = [];
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o.body.build(body);
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code.push(utils.ident(body));
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code.push("}");
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} else if (o.op == "IF") {
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code.push(`if (Fr_isTrue(${o.condLabel})) {`);
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const thenCode = [];
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o.thenCode.build(thenCode);
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code.push(utils.ident(thenCode));
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if (o.elseCode) {
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code.push("} else {");
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const elseCode = [];
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o.elseCode.build(elseCode);
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code.push(utils.ident(elseCode));
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}
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code.push("}");
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} else if (o.op == "FNCALL") {
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code.push(`${o.fnName}(ctx, ${o.retLabel}, ${o.params.join(",")});`);
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} else if (o.op == "CHECKCONSTRAINT") {
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code.push(`ctx->checkConstraint(__cIdx, ${ref2src(o.a)}, ${ref2src(o.b)}, "${o.strErr}");`);
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} else if (o.op == "LOG") {
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code.push(`ctx->log(${ref2src(o.val)});`);
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}
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});
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}
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}
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class FunctionBuilderC {
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constructor(name, instanceDef, type) {
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this.name = name;
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this.instanceDef = instanceDef;
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this.type = type; // "COMPONENT" or "FUNCTIOM"
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this.definedFrElements = [];
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this.definedIntElements = [];
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this.definedSizeElements = [];
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this.definedPFrElements = [];
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this.initializedElements = [];
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this.initializedSignalOffset = [];
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this.initializedSignalSizes = [];
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}
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defineFrElements(dLabel, size) {
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this.definedFrElements.push({dLabel, size});
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}
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defineIntElement(dLabel) {
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this.definedIntElements.push({dLabel});
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}
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defineSizesElement(dLabel) {
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this.definedSizeElements.push({dLabel});
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}
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definePFrElement(dLabel) {
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this.definedPFrElements.push({dLabel});
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}
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initializeFrElement(dLabel, offset, idConstant) {
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this.initializedElements.push({dLabel, offset, idConstant});
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}
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initializeSignalOffset(dLabel, component, hash, hashLabel) {
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this.initializedSignalOffset.push({dLabel, component, hash, hashLabel});
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}
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initializeSignalSizes(dLabel, component, hash, hashLabel) {
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this.initializedSignalSizes.push({dLabel, component, hash, hashLabel});
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}
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setParams(params) {
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this.params = params;
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}
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_buildHeader(code) {
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this.definedFrElements.forEach( (o) => {
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code.push(`FrElement ${o.dLabel}[${o.size}];`);
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});
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this.definedIntElements.forEach( (o) => {
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code.push(`int ${o.dLabel};`);
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});
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this.definedSizeElements.forEach( (o) => {
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code.push(`Circom_Sizes ${o.dLabel};`);
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});
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this.definedPFrElements.forEach( (o) => {
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code.push(`PFrElement ${o.dLabel};`);
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});
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this.initializedElements.forEach( (o) => {
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code.push(`Fr_copy(&(${o.dLabel}[${o.offset}]), ctx->circuit->constants +${o.idConstant});`);
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});
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this.initializedSignalOffset.forEach( (o) => {
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code.push(`${o.dLabel} = ctx->getSignalOffset(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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});
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this.initializedSignalSizes.forEach( (o) => {
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code.push(`${o.dLabel} = ctx->getSignalSizes(${ref2src(o.component)}, 0x${o.hash}LL /* ${o.hashLabel} */);`);
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});
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}
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_buildFooter(code) {
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}
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newCodeBuilder() {
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return new CodeBuilderC();
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}
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setBody(body) {
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this.body = body;
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}
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build(code) {
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code.push(
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"/*",
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this.instanceDef,
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"*/"
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);
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if (this.type=="COMPONENT") {
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code.push(`void ${this.name}(Circom_CalcWit *ctx, int __cIdx) {`);
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} else if (this.type=="FUNCTION") {
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let sParams = "";
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for (let i=0;i<this.params.length;i++ ) sParams += `, PFrElement ${this.params[i]}`;
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code.push(`void ${this.name}(Circom_CalcWit *ctx, PFrElement __retValue ${sParams}) {`);
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} else {
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assert(false);
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}
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const fnCode = [];
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this._buildHeader(fnCode);
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this.body.build(fnCode);
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if (this.type=="COMPONENT") {
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fnCode.push("ctx->finished(__cIdx);");
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} else if (this.type=="FUNCTION") {
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fnCode.push("returnFunc: ;");
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} else {
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assert(false);
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}
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this._buildFooter(fnCode);
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code.push(utils.ident(fnCode));
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code.push("}");
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}
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}
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class BuilderC {
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constructor(p, verbose) {
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this.F = new F1Field(p);
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this.hashMaps={};
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this.componentEntriesTables=new BigArray();
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this.sizes ={};
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this.constants = [];
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this.functions = [];
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this.components = new BigArray();
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this.usedConstants = {};
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this.verbose = verbose;
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}
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setHeader(header) {
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this.header=header;
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}
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// ht is an array of 256 element that can be undefined or [Hash, Idx, KeyName] elements.
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addHashMap(name, hm) {
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this.hashMaps[name] = hm;
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}
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addComponentEntriesTable(name, cet) {
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this.componentEntriesTables.push({
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name: name,
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cet: cet
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});
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}
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addSizes(name, accSizes) {
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this.sizes[name] = accSizes;
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}
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addConstant(c) {
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c = this.F.e(c);
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const cS = c.toString();
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if (typeof this.usedConstants[cS] != "undefined") return this.usedConstants[cS];
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this.constants.push(c);
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this.usedConstants[cS] = this.constants.length - 1;
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return this.constants.length - 1;
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}
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addFunction(fnBuilder) {
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this.functions.push(fnBuilder);
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}
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addComponent(component) {
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this.components.push(component);
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}
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setMapIsInput(map) {
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this.mapIsInput = map;
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}
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setWit2Sig(wit2sig) {
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this.wit2sig = wit2sig;
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}
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newComponentFunctionBuilder(name, instanceDef) {
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return new FunctionBuilderC(name, instanceDef, "COMPONENT");
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}
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newFunctionBuilder(name, instanceDef) {
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return new FunctionBuilderC(name, instanceDef, "FUNCTION");
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}
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// Body functions
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_buildHeader(code) {
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code.push(
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"#include \"circom.h\"",
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"#include \"calcwit.h\"",
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`#define NSignals ${this.header.NSignals}`,
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`#define NComponents ${this.header.NComponents}`,
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`#define NOutputs ${this.header.NOutputs}`,
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`#define NInputs ${this.header.NInputs}`,
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`#define NVars ${this.header.NVars}`,
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`#define __P__ "${this.header.P.toString()}"`,
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""
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);
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}
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_buildHashMaps(code) {
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code.push("// Hash Maps ");
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for (let hmName in this.hashMaps ) {
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const hm = this.hashMaps[hmName];
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let c = `Circom_HashEntry ${hmName}[256] = {`;
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for (let i=0; i<256; i++) {
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c += i>0 ? "," : "";
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if (hm[i]) {
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c += `{0x${hm[i][0]}LL, ${hm[i][1]}} /* ${hm[i][2]} */`;
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} else {
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c += "{0,0}";
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}
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}
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c += "};";
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code.push(c);
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}
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}
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_buildComponentEntriesTables(code) {
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code.push("// Component Entry tables");
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for (let i=0; i< this.componentEntriesTables.length; i++) {
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if ((this.verbose)&&(i%100000 ==0)) console.log(`_buildComponentEntriesTables ${i}/${this.componentEntriesTables.length}`);
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const cetName = this.componentEntriesTables[i].name;
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const cet = this.componentEntriesTables[i].cet;
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code.push(`Circom_ComponentEntry ${cetName}[${cet.length}] = {`);
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for (let j=0; j<cet.length; j++) {
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const ty = cet[j].type == "S" ? "_typeSignal" : "_typeComponent";
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code.push(` ${j>0?",":" "}{${cet[j].offset},${cet[j].sizeName}, ${ty}}`);
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}
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code.push("};");
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}
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}
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_buildSizes(code) {
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code.push("// Sizes");
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for (let sName in this.sizes) {
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const accSizes = this.sizes[sName];
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let c = `Circom_Size ${sName}[${accSizes.length}] = {`;
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for (let i=0; i<accSizes.length; i++) {
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if (i>0) c += ",";
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c += accSizes[i];
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}
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c += "};";
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code.push(c);
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}
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}
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_buildConstants(code) {
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const self = this;
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code.push("// Constants");
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code.push(`FrElement _constants[${self.constants.length}] = {`);
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for (let i=0; i<self.constants.length; i++) {
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if ((this.verbose)&&(i%1000000 ==0)) console.log(`_buildConstants ${i}/${this.constants.length}`);
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code.push((i>0 ? "," : " ") + "{" + number2Code(self.constants[i]) + "}");
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}
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code.push("};");
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function number2Code(n) {
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const minShort = self.F.neg(self.F.e("80000000"));
|
|
const maxShort = self.F.e("7FFFFFFF", 16);
|
|
|
|
if ( (self.F.geq(n, minShort))
|
|
&&(self.F.leq(n, maxShort)))
|
|
{
|
|
if (self.F.geq(n, self.F.zero)) {
|
|
return addShortMontgomeryPositive(n);
|
|
} else {
|
|
return addShortMontgomeryNegative(n);
|
|
}
|
|
}
|
|
|
|
return addLongMontgomery(n);
|
|
|
|
|
|
function addShortMontgomeryPositive(a) {
|
|
return `${a.toString()}, 0x40000000, { ${getLongString(toMontgomery(a))} }`;
|
|
}
|
|
|
|
|
|
function addShortMontgomeryNegative(a) {
|
|
const b = -Scalar.toNumber(self.F.neg(a));
|
|
return `${b.toString()}, 0x40000000, { ${getLongString(toMontgomery(a))} }`;
|
|
}
|
|
|
|
function addLongMontgomery(a) {
|
|
return `0, 0xC0000000, { ${getLongString(toMontgomery(a))} }`;
|
|
}
|
|
|
|
function getLongString(a) {
|
|
let S = "";
|
|
const arr = Scalar.toArray(a, 0x100000000);
|
|
for (let i=0; i<self.F.n64*2; i+=2) {
|
|
const idx = arr.length-2-i;
|
|
|
|
if (i>0) S = S + ",";
|
|
|
|
if ( idx >=0) {
|
|
let msb = arr[idx].toString(16);
|
|
while (msb.length<8) msb = "0" + msb;
|
|
|
|
let lsb = arr[idx+1].toString(16);
|
|
while (lsb.length<8) lsb = "0" + lsb;
|
|
|
|
S += "0x" + msb + lsb + "LL";
|
|
} else {
|
|
S += "0LL";
|
|
}
|
|
}
|
|
|
|
return S;
|
|
}
|
|
|
|
function toMontgomery(a) {
|
|
return self.F.mul(a, self.F.R);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
_buildFunctions(code) {
|
|
for (let i=0; i<this.functions.length; i++) {
|
|
const cfb = this.functions[i];
|
|
cfb.build(code);
|
|
}
|
|
}
|
|
|
|
_buildComponents(code) {
|
|
code.push("// Components");
|
|
code.push(`Circom_Component _components[${this.components.length}] = {`);
|
|
for (let i=0; i<this.components.length; i++) {
|
|
if ((this.verbose)&&(i%1000000 ==0)) console.log(`_buildComponents ${i}/${this.components.length}`);
|
|
const c = this.components[i];
|
|
const sep = i>0 ? " ," : " ";
|
|
code.push(`${sep}{${c.hashMapName}, ${c.entryTableName}, ${c.functionName}, ${c.nInSignals}, ${c.newThread}}`);
|
|
}
|
|
code.push("};");
|
|
}
|
|
|
|
_buildMapIsInput(code) {
|
|
code.push("// mapIsInput");
|
|
code.push(`u32 _mapIsInput[${this.mapIsInput.length}] = {`);
|
|
let line = "";
|
|
for (let i=0; i<this.mapIsInput.length; i++) {
|
|
if ((this.verbose)&&(i%1000000 ==0)) console.log(`_buildMapIsInput ${i}/${this.mapIsInput.length}`);
|
|
line += i>0 ? ", " : " ";
|
|
line += toHex(this.mapIsInput[i]);
|
|
if (((i+1) % 64)==0) {
|
|
code.push(" "+line);
|
|
line = "";
|
|
}
|
|
}
|
|
if (line != "") code.push(" "+line);
|
|
code.push("};");
|
|
|
|
function toHex(number) {
|
|
if (number < 0) number = 0xFFFFFFFF + number + 1;
|
|
let S=number.toString(16).toUpperCase();
|
|
while (S.length<8) S = "0" + S;
|
|
return "0x"+S;
|
|
}
|
|
}
|
|
|
|
_buildWit2Sig(code) {
|
|
code.push("// Witness to Signal Table");
|
|
code.push(`int _wit2sig[${this.wit2sig.length}] = {`);
|
|
let line = "";
|
|
for (let i=0; i<this.wit2sig.length; i++) {
|
|
if ((this.verbose)&&(i%1000000 ==0)) console.log(`_buildWit2Sig ${i}/${this.wit2sig.length}`);
|
|
line += i>0 ? "," : " ";
|
|
line += this.wit2sig[i];
|
|
if (((i+1) % 64) == 0) {
|
|
code.push(" "+line);
|
|
line = "";
|
|
}
|
|
}
|
|
if (line != "") code.push(" "+line);
|
|
code.push("};");
|
|
}
|
|
|
|
_buildCircuitVar(code) {
|
|
|
|
code.push(
|
|
"// Circuit Variable",
|
|
"Circom_Circuit _circuit = {" ,
|
|
" NSignals,",
|
|
" NComponents,",
|
|
" NInputs,",
|
|
" NOutputs,",
|
|
" NVars,",
|
|
" _wit2sig,",
|
|
" _components,",
|
|
" _mapIsInput,",
|
|
" _constants,",
|
|
" __P__",
|
|
"};"
|
|
);
|
|
}
|
|
|
|
|
|
build() {
|
|
const code=new BigArray();
|
|
this._buildHeader(code);
|
|
this._buildSizes(code);
|
|
this._buildConstants(code);
|
|
this._buildHashMaps(code);
|
|
this._buildComponentEntriesTables(code);
|
|
this._buildFunctions(code);
|
|
this._buildComponents(code);
|
|
this._buildMapIsInput(code);
|
|
this._buildWit2Sig(code);
|
|
this._buildCircuitVar(code);
|
|
return streamFromMultiArray(code);
|
|
}
|
|
}
|
|
|
|
|
|
module.exports = BuilderC;
|