C generation

src/ctx.js

@@ -0,0 +1,171 @@
+const bigInt = require("big-integer");
+
+
+class TableName {
+    constructor (ctx) {
+        this.ctx = ctx;
+        this.o = {};
+    }
+
+    _allocElement(name, _sizes, type) {
+        const sizes = _sizes || [];
+        let l = 1;
+        for (let i=0; i<sizes.length; i++) {
+            l = l*sizes[i];
+        }
+        this.o[name] = {
+            sizes: sizes,
+            type: type
+        };
+        return l;
+    }
+
+    addSignal(name, sizes) {
+        const l = this._allocElement(name, sizes, "S");
+        const o = this.ctx.nSignals;
+        this.o[name].offset = o;
+        this.ctx.nSignals += l;
+        if (l>1) {
+            return [o, o+l];
+        } else {
+            return o;
+        }
+    }
+
+    addComponent(name, sizes) {
+        const l = this._allocElement(name, sizes, "C");
+        const o = this.ctx.nComponents;
+        this.o[name].offset = o;
+        this.ctx.nComponents += l;
+        if (l>1) {
+            return [o, o+l];
+        } else {
+            return o;
+        }
+    }
+
+    _getElement(name, _sels, type) {
+        const sels = _sels || [];
+        const s = this.o[name];
+        if (!s) return -1;
+        if (s.type != type) return -1;
+        if (sels.length > s.sizes.length) return -1;
+        let l=1;
+        for (let i = s.sizes.length-1; i>sels.length; i--) {
+            l = l*s.sizes[i];
+        }
+        let o =0;
+        let p=1;
+        for (let i=sels.length-1; i>=0; i--) {
+            if (sels[i] > s.sizes[i]) return -1; // Out of range
+            if (sels[i] < 0) return -1; // Out of range
+            o += p*sels[i];
+            p *= s.sizes[i];
+        }
+        if (l>1) {
+            return [s.offset + o, s.offset + o + l];
+        } else {
+            return s.offset + o;
+        }
+    }
+
+    getSignalIdx(name, sels) {
+        return this._getElement(name, sels, "S");
+    }
+
+    getComponentIdx(name, sels) {
+        return this._getElement(name, sels, "C");
+    }
+
+    getSizes(name) {
+        return this.o[name].sels;
+    }
+
+}
+
+module.exports = class Ctx {
+
+    constructor() {
+
+        this.stONE = 1;
+        this.stOUTPUT = 2;
+        this.stPUBINPUT = 3;
+        this.stPRVINPUT = 4;
+        this.stINTERNAL = 5;
+        this.stDISCARDED = 6;
+        this.stCONSTANT = 7;
+
+        this.IN = 0x01;
+        this.OUT = 0x02;
+        this.PRV = 0x04;
+        this.ONE = 0x08;
+        this.MAIN = 0x10;
+        this.COUNTED = 0x20;
+
+        this.scopes = [{}];
+        this.signals = [];
+
+        this.currentComponent= -1;
+        this.constraints= [];
+        this.components= [];
+        this.templates= {};
+        this.functions= {};
+        this.functionParams= {};
+        this.nSignals = 0;
+        this.nComponents =0;
+        this.names = new TableName(this);
+        this.main=false;
+
+        const oneIdx = this.addSignal("one");
+        this.signals[oneIdx] = {
+            v: bigInt(1),
+            o: this.ONE,
+            e: -1,
+        };
+    }
+
+    addSignal(name, sizes) {
+        if (this.currentComponent>=0) {
+            return this.components[this.currentComponent].names.addSignal(name, sizes);
+        } else {
+            return this.names.addSignal(name, sizes);
+        }
+    }
+
+    addComponent(name, sizes) {
+        if (this.currentComponent>=0) {
+            return this.components[this.currentComponent].names.addComponent(name, sizes);
+        } else {
+            return this.names.addComponent(name, sizes);
+        }
+    }
+
+    getSignalIdx(name, sels) {
+        if (this.currentComponent>=0) {
+            return this.components[this.currentComponent].names.getSignalIdx(name, sels);
+        } else {
+            return this.names.getSignalIdx(name, sels);
+        }
+    }
+
+    getComponentIdx(name, sels) {
+        if (this.currentComponent>=0) {
+            return this.components[this.currentComponent].names.getComponentIdx(name, sels);
+        } else {
+            return this.names.getComponentIdx(name, sels);
+        }
+    }
+
+    getSizes(name) {
+        if (this.currentComponent>=0) {
+            return this.components[this.currentComponent].names.getSizes(name);
+        } else {
+            return this.names.getSizes(name);
+        }
+    }
+
+    newTableName() {
+        return new TableName(this);
+    }
+
+};