0.5.34

README.md

@@ -1,12 +1,15 @@
 # Circom
 
-Circom is a language designed to write arithmetic circuits that can be used in zero knowledge proofs.
+Circom is a language designed to write arithmetic circuits that can be used in zero-knowledge proofs.
 
 In particular, it is designed to work in [zksnarks JavaScript library](https://github.com/iden3/zksnark).
 
-
 ## Usage
 
+### Circom Docs
+
+You can read the details of circom in [the documentation webpage](https://docs.circom.io/).
+
 ### Tutorial
 
 A good starting point [is this tutorial](https://github.com/iden3/circom/blob/master/TUTORIAL.md)

cli.js

@@ -24,6 +24,7 @@
 const fs = require("fs");
 const path = require("path");
 const Scalar = require("ffjavascript").Scalar;
+const stringifyBigInts = require("ffjavascript").utils.stringifyBigInts;
 const fastFile = require("fastfile");
 
 const compiler = require("./src/compiler");
@@ -87,6 +88,8 @@ async function run() {
 
     if (argv.csource) {
         options.cSourceFile = await fastFile.createOverride(cSourceName);
+        const noExt = cSourceName.substr(0, cSourceName.lastIndexOf(".")) || cSourceName;
+        options.dataFile = await fastFile.createOverride(noExt+".dat");
     }
     if (argv.wasm) {
         options.wasmFile = await fastFile.createOverride(wasmName);
@@ -117,6 +120,7 @@ async function run() {
     await compiler(fullFileName, options);
 
     if (options.cSourceFile) await options.cSourceFile.close();
+    if (options.dataFile) await options.dataFile.close();
     if (options.wasmFile) await options.wasmFile.close();
     if (options.watFile) await options.watFile.close();
     let symDone = false;
@@ -150,7 +154,7 @@ run().then(()=> {
         if (argv.verbose) console.log(err.stack);
     }
     if (err.ast) {
-        console.error(JSON.stringify(err.ast, null, 1));
+        console.error(JSON.stringify(stringifyBigInts(err.ast), null, 1));
     }
     process.exit(1);
 });

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "circom",
-  "version": "0.5.18",
+  "version": "0.5.34",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -30,6 +30,11 @@
         "js-tokens": "^4.0.0"
       }
     },
+    "@iden3/bigarray": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/@iden3/bigarray/-/bigarray-0.0.2.tgz",
+      "integrity": "sha512-Xzdyxqm1bOFF6pdIsiHLLl3HkSLjbhqJHVyqaTxXt3RqXBEnmsUmEW47H7VOi/ak7TdkRpNkxjyK5Zbkm+y52g=="
+    },
     "@types/color-name": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
@@ -203,20 +208,22 @@
       "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII="
     },
     "circom_runtime": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/circom_runtime/-/circom_runtime-0.0.6.tgz",
-      "integrity": "sha512-o0T5MuWzxnxinWG3+CygS/kZouoP+z5ZrufUwqKJy3gsVFJhkbqMpfKmcBGjhExB3uatA7cKyOiRAOLOz5+t5w==",
+      "version": "0.1.9",
+      "resolved": "https://registry.npmjs.org/circom_runtime/-/circom_runtime-0.1.9.tgz",
+      "integrity": "sha512-eh34quaGpeEWXthnhmC9zpoBL/5zJ0mGDbPT/plb/xVmFaKxJDcLuCr2sma5s3il8AYlEIb/nbqytojyI3TWDQ==",
       "requires": {
-        "ffjavascript": "0.1.0",
+        "ffjavascript": "0.2.10",
         "fnv-plus": "^1.3.1"
       },
       "dependencies": {
         "ffjavascript": {
-          "version": "0.1.0",
-          "resolved": "https://registry.npmjs.org/ffjavascript/-/ffjavascript-0.1.0.tgz",
-          "integrity": "sha512-dmKlUasSfvUcxBm8nCSKl2x7EFJsXA7OVP8XLFA03T2+6mAc3IiVLC2ambEVOcMOhyhl0vJfVZjM9f9d38D1rw==",
+          "version": "0.2.10",
+          "resolved": "https://registry.npmjs.org/ffjavascript/-/ffjavascript-0.2.10.tgz",
+          "integrity": "sha512-GQI6gHYYG5/iD4Kt3VzezzK7fARJzP0zkc82V/+JAdjfeKBXhDSo5rpKFuK3cDcrdW0Fu2emuYNMEAuFqhEQvQ==",
           "requires": {
-            "big-integer": "^1.6.48"
+            "big-integer": "^1.6.48",
+            "wasmcurves": "0.0.5",
+            "worker-threads": "^1.0.0"
           }
         }
       }
@@ -344,9 +351,9 @@
       "dev": true
     },
     "ejs": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.3.tgz",
-      "integrity": "sha512-wmtrUGyfSC23GC/B1SMv2ogAUgbQEtDmTIhfqielrG5ExIM9TP4UoYdi90jLF1aTcsWCJNEO0UrgKzP0y3nTSg==",
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.5.tgz",
+      "integrity": "sha512-dldq3ZfFtgVTJMLjOe+/3sROTzALlL9E34V4/sDtUd/KlBSS0s6U1/+WPE1B4sj9CXHJpL1M6rhNJnc9Wbal9w==",
       "requires": {
         "jake": "^10.6.1"
       }
@@ -576,14 +583,14 @@
       "dev": true
     },
     "fastfile": {
-      "version": "0.0.12",
-      "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.12.tgz",
-      "integrity": "sha512-0EZo2y5eW8X0oiDDRvcnufjVxlM96CQL5hvmRQtbRABWlCkH73IHwkzl0qOSdxtchaMr+0TSB7GVqaVEixRr1Q=="
+      "version": "0.0.18",
+      "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.18.tgz",
+      "integrity": "sha512-q03PTKc+wptis4WmuFOwPNQx2p5myFUrl/dMgRlW9mymc1Egyc14JPHgiGnWK+sJ0+dBl2Vwtfh5GfSQltYOpw=="
     },
     "ffiasm": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/ffiasm/-/ffiasm-0.0.2.tgz",
-      "integrity": "sha512-o/CL7F4IodB7eRHCOQL1SrqN2DIPHrQbEwjPY7NIyeBRdnB3G0xo6b6Mj44SKiWFnvpQMb3n4N7acjD3vv4NVQ==",
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/ffiasm/-/ffiasm-0.1.1.tgz",
+      "integrity": "sha512-irMMHiR9JJ7BVBrAhtliUawxVdPYSdyl81taUYJ4C1mJ0iw2ueThE/qtr0J8B83tsIY8HJvh0lg5F+6ClK4xpA==",
       "requires": {
         "big-integer": "^1.6.48",
         "ejs": "^3.0.1",
@@ -591,13 +598,24 @@
       }
     },
     "ffjavascript": {
-      "version": "0.2.4",
-      "resolved": "https://registry.npmjs.org/ffjavascript/-/ffjavascript-0.2.4.tgz",
-      "integrity": "sha512-XFeWcjUDFPavN+DDOxhE8p5MOhZQJc9oO1Sj4ml1pyjqNhS1ujEamcjFyK0cctdnat61i7lvpTYzdtS3RYDC8w==",
+      "version": "0.2.22",
+      "resolved": "https://registry.npmjs.org/ffjavascript/-/ffjavascript-0.2.22.tgz",
+      "integrity": "sha512-EsVqap2Txm17bKW0z/jXCX3M7rQ++nQUAJY8alWDpyhjRj90xjl6GLeVSKZQ8rOFDQ/SFFXcEB8w9X8Boxid+w==",
       "requires": {
         "big-integer": "^1.6.48",
-        "wasmcurves": "0.0.4",
+        "wasmcurves": "0.0.12",
         "worker-threads": "^1.0.0"
+      },
+      "dependencies": {
+        "wasmcurves": {
+          "version": "0.0.12",
+          "resolved": "https://registry.npmjs.org/wasmcurves/-/wasmcurves-0.0.12.tgz",
+          "integrity": "sha512-1Jl9mkatyHSNj80ILjf85SZUNuZQBCkTjJlhzqHnZQXUmIimCIWkugaVaYNjozLs1Gun4h/keZe1MBeBN0sRpg==",
+          "requires": {
+            "big-integer": "^1.6.42",
+            "blakejs": "^1.1.0"
+          }
+        }
       }
     },
     "ffwasm": {
@@ -1161,19 +1179,13 @@
       "dev": true
     },
     "r1csfile": {
-      "version": "0.0.14",
-      "resolved": "https://registry.npmjs.org/r1csfile/-/r1csfile-0.0.14.tgz",
-      "integrity": "sha512-7m4eWpnbjkwGGUaRmIAJc4w+HvaeBPJXUKHIqLkHeD9Yyjem6/EHmlgDVl+4hWNWGZqdhXuMqWSH9+O6QOXBdw==",
+      "version": "0.0.16",
+      "resolved": "https://registry.npmjs.org/r1csfile/-/r1csfile-0.0.16.tgz",
+      "integrity": "sha512-A2jRVWzGgmXeG2lVAc0H4suJmzt50it5UvBnycJgBCpMXM3tH/M6RguP7nvs6suY/yYnkN6jX6iTScSiDUF3FA==",
       "requires": {
-        "fastfile": "0.0.7",
-        "ffjavascript": "0.2.4"
-      },
-      "dependencies": {
-        "fastfile": {
-          "version": "0.0.7",
-          "resolved": "https://registry.npmjs.org/fastfile/-/fastfile-0.0.7.tgz",
-          "integrity": "sha512-Zk7sdqsV6DsN/rhjULDfCCowPiMDsziTMFicdkrKN80yybr/6YFf9H91ELXN85dVEf6EYkVR5EHkZNc0dMqZKA=="
-        }
+        "@iden3/bigarray": "0.0.2",
+        "fastfile": "0.0.18",
+        "ffjavascript": "0.2.22"
       }
     },
     "regexpp": {
@@ -1472,9 +1484,9 @@
       }
     },
     "wasmcurves": {
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/wasmcurves/-/wasmcurves-0.0.4.tgz",
-      "integrity": "sha512-c/Tob+F/7jJhep1b2qtj54r4nkGaRifNbQ1OJx8cBBFH1RlHbWIbISHWONClOxiVwy/JZOpbN4SgvSX/4lF80A==",
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/wasmcurves/-/wasmcurves-0.0.5.tgz",
+      "integrity": "sha512-BmI4GXLjLawGg2YkvHa8zRsnWec+d1uwoxE+Iov8cqOpDL7GA5XO2pk2yuDbXHMzwIug2exnKot3baRZ86R0pA==",
       "requires": {
         "big-integer": "^1.6.42",
         "blakejs": "^1.1.0"

package.json

@@ -1,6 +1,6 @@
 {
   "name": "circom",
-  "version": "0.5.18",
+  "version": "0.5.34",
   "description": "Language to generate logic circuits",
   "main": "index.js",
   "directories": {
@@ -30,13 +30,13 @@
   },
   "dependencies": {
     "chai": "^4.2.0",
-    "circom_runtime": "0.0.6",
-    "fastfile": "0.0.12",
-    "ffiasm": "0.0.2",
-    "ffjavascript": "0.2.4",
+    "circom_runtime": "0.1.9",
+    "fastfile": "0.0.18",
+    "ffiasm": "0.1.1",
+    "ffjavascript": "0.2.22",
     "ffwasm": "0.0.7",
     "fnv-plus": "^1.3.1",
-    "r1csfile": "0.0.14",
+    "r1csfile": "0.0.16",
     "tmp-promise": "^2.0.2",
     "wasmbuilder": "0.0.10"
   },

ports/c/builder.js

@@ -59,8 +59,9 @@ class CodeBuilderC {
         this.ops.push({op: "SETSIGNAL", component, signal, value});
     }
 
-    getSignal(dLabel, component, signal) {
-        this.ops.push({op: "GETSIGNAL", dLabel, component, signal});
+    getSignal(dLabel, component, signal, n) {
+        if (typeof(n) == "undefined") n=1;
+        this.ops.push({op: "GETSIGNAL", dLabel, component, signal, n});
     }
 
     copyN(dLabel, offset, src, n) {
@@ -95,6 +96,10 @@ class CodeBuilderC {
         this.ops.push({op: "CHECKCONSTRAINT", a, b, strErr});
     }
 
+    checkAssert(a, strErr) {
+        this.ops.push({op: "CHECKASSERT", a, strErr});
+    }
+
     log(val) {
         this.ops.push({op: "LOG", val});
     }
@@ -177,7 +182,7 @@ class CodeBuilderC {
             } else if (o.op == "SETSIGNAL") {
                 code.push(`ctx->setSignal(__cIdx, ${ref2src(o.component)}, ${ref2src(o.signal)}, ${ref2src(o.value)});`);
             } else if (o.op == "GETSIGNAL") {
-                code.push(`ctx->getSignal(__cIdx, ${ref2src(o.component)}, ${ref2src(o.signal)}, ${o.dLabel});`);
+                code.push(`ctx->multiGetSignal(__cIdx, ${ref2src(o.component)}, ${ref2src(o.signal)}, ${o.dLabel}, ${o.n});`);
             } else if (o.op == "COPYN") {
                 const oS = ref2src(o.offset);
                 const dLabel = (oS != "0") ? (o.dLabel + "+" + oS) : o.dLabel;
@@ -215,6 +220,8 @@ class CodeBuilderC {
                 code.push(`${o.fnName}(ctx, ${o.retLabel}, ${o.params.join(",")});`);
             } else if (o.op == "CHECKCONSTRAINT") {
                 code.push(`ctx->checkConstraint(__cIdx, ${ref2src(o.a)}, ${ref2src(o.b)}, "${o.strErr}");`);
+            } else if (o.op == "CHECKASSERT") {
+                code.push(`ctx->checkAssert(__cIdx, ${ref2src(o.a)}, "${o.strErr}");`);
             } else if (o.op == "LOG") {
                 code.push(`ctx->log(${ref2src(o.val)});`);
             }
@@ -352,6 +359,12 @@ class BuilderC {
         this.components = new BigArray();
         this.usedConstants = {};
         this.verbose = verbose;
+
+
+        this.sizePointers = {};
+        this.hashMapPointers = {};
+        this.functionIdx = {};
+        this.nCets = 0;
     }
 
     setHeader(header) {
@@ -363,11 +376,11 @@ class BuilderC {
         this.hashMaps[name] = hm;
     }
 
-    addComponentEntriesTable(name, cet) {
-        this.componentEntriesTables.push({
+    addComponentEntriesTable(name, cet, idComponent) {
+        this.componentEntriesTables[idComponent] = {
             name: name,
             cet: cet
-        });
+        };
     }
 
     addSizes(name, accSizes) {
@@ -413,82 +426,104 @@ class BuilderC {
 
     _buildHeader(code) {
         code.push(
-            "#include \"circom.h\"",
-            "#include \"calcwit.h\"",
+            "#include \"circom.hpp\"",
+            "#include \"calcwit.hpp\"",
             `#define NSignals ${this.header.NSignals}`,
             `#define NComponents ${this.header.NComponents}`,
             `#define NOutputs ${this.header.NOutputs}`,
             `#define NInputs ${this.header.NInputs}`,
             `#define NVars ${this.header.NVars}`,
+            `#define NPublic ${this.header.NPublic}`,
             `#define __P__ "${this.header.P.toString()}"`,
             ""
         );
     }
 
-    _buildHashMaps(code) {
+    async _buildHashMaps(fdData) {
 
-        code.push("// Hash Maps ");
+        while (fdData.pos % 8) fdData.pos++;
+        this.pHashMaps = fdData.pos;
+
+        const buff = new Uint8Array(256*12);
+        const buffV = new DataView(buff.buffer);
         for (let hmName in this.hashMaps ) {
+
+            while (fdData.pos % 8) fdData.pos++;
+            this.hashMapPointers[hmName] = fdData.pos;
             const hm = this.hashMaps[hmName];
 
-            let c = `Circom_HashEntry ${hmName}[256] = {`;
             for (let i=0; i<256; i++) {
-                c += i>0 ? "," : "";
-                if (hm[i]) {
-                    c += `{0x${hm[i][0]}LL, ${hm[i][1]}} /* ${hm[i][2]} */`;
-                } else {
-                    c += "{0,0}";
-                }
+                buffV.setUint32(i*12, hm[i] ? parseInt( hm[i][0].slice(8), 16 ) : 0, true);
+                buffV.setUint32(i*12+4, hm[i] ? parseInt( hm[i][0].slice(0,8), 16 ) : 0, true);
+                buffV.setUint32(i*12+8, hm[i] ? hm[i][1] : 0, true);
             }
-            c += "};";
-            code.push(c);
+
+            await fdData.write(buff);
         }
 
     }
 
-    _buildComponentEntriesTables(code) {
-        code.push("// Component Entry tables");
+    async _buildComponentEntriesTables(fdData) {
+
+        while (fdData.pos % 8) fdData.pos++;
+        this.pCets = fdData.pos;
         for (let i=0; i< this.componentEntriesTables.length; i++) {
             if ((this.verbose)&&(i%100000 ==0)) console.log(`_buildComponentEntriesTables ${i}/${this.componentEntriesTables.length}`);
-            const cetName = this.componentEntriesTables[i].name;
             const cet = this.componentEntriesTables[i].cet;
 
-            code.push(`Circom_ComponentEntry ${cetName}[${cet.length}] = {`);
+            this.components[i].entryTablePointer = fdData.pos;
+            const buff = new Uint8Array(16*cet.length);
+            const buffV = new DataView(buff.buffer);
+
             for (let j=0; j<cet.length; j++) {
-                const ty = cet[j].type == "S" ? "_typeSignal" : "_typeComponent";
-                code.push(`    ${j>0?",":" "}{${cet[j].offset},${cet[j].sizeName}, ${ty}}`);
+                utils.setUint64(buffV, 16*j+0, this.sizePointers[ cet[j].sizeName]);
+                buffV.setUint32(16*j+8, cet[j].offset, true);
+                buffV.setUint32(16*j+12, cet[j].type == "S" ? 0 : 1, true);  // Size type 0-> Signal, 1->Component
+                this.nCets ++;
             }
-            code.push("};");
+
+            await fdData.write(buff);
+
         }
     }
 
-    _buildSizes(code) {
-        code.push("// Sizes");
+    async _buildSizes(fdData) {
         for (let sName in this.sizes) {
             const accSizes = this.sizes[sName];
 
-            let c = `Circom_Size ${sName}[${accSizes.length}] = {`;
+            while (fdData.pos % 8) fdData.pos++;
+            this.sizePointers[sName] = fdData.pos;
+
+            const buff = new Uint8Array(4*accSizes.length);
+            const buffV = new DataView(buff.buffer);
             for (let i=0; i<accSizes.length; i++) {
-                if (i>0) c += ",";
-                c += accSizes[i];
+                buffV.setUint32(i*4, accSizes[i], true);
             }
-            c += "};";
-            code.push(c);
+            await fdData.write(buff);
         }
     }
 
-    _buildConstants(code) {
+
+    async _buildConstants(fdData) {
         const self = this;
 
-        code.push("// Constants");
-        code.push(`FrElement _constants[${self.constants.length}] = {`);
-        for (let i=0; i<self.constants.length; i++) {
-            if ((this.verbose)&&(i%1000000 ==0)) console.log(`_buildConstants ${i}/${this.constants.length}`);
-            code.push((i>0 ? "," : " ") + "{" + number2Code(self.constants[i]) + "}");
-        }
-        code.push("};");
+        const frSize = (8 + self.F.n64*8);
+        const buff = new Uint8Array(self.constants.length* frSize);
+        const buffV = new DataView(buff.buffer);
 
-        function number2Code(n) {
+
+        while (fdData.pos % 8) fdData.pos++;
+        this.pConstants = fdData.pos;
+
+        let o = 0;
+        for (let i=0; i<self.constants.length; i++) {
+            Fr2Bytes(buffV, o, self.constants[i]);
+            o += frSize;
+        }
+        await fdData.write(buff);
+
+
+        function Fr2Bytes(buffV, offset, n) {
             const minShort = self.F.neg(self.F.e("80000000"));
             const maxShort = self.F.e("7FFFFFFF", 16);
 
@@ -496,51 +531,49 @@ class BuilderC {
                 &&(self.F.leq(n, maxShort)))
             {
                 if (self.F.geq(n, self.F.zero)) {
-                    return addShortMontgomeryPositive(n);
+                    return shortMontgomeryPositive(n);
                 } else {
-                    return addShortMontgomeryNegative(n);
+                    return shortMontgomeryNegative(n);
                 }
             }
 
-            return addLongMontgomery(n);
+            return longMontgomery(n);
 
 
-            function addShortMontgomeryPositive(a) {
-                return `${a.toString()}, 0x40000000, { ${getLongString(toMontgomery(a))} }`;
+            function shortMontgomeryPositive(a) {
+                buffV.setUint32(offset, Scalar.toNumber(a) , true );
+                buffV.setUint32(offset + 4, 0x40000000 , true );
+                long(buffV, offset + 8, toMontgomery(a));
             }
 
 
-            function addShortMontgomeryNegative(a) {
+            function shortMontgomeryNegative(a) {
                 const b = -Scalar.toNumber(self.F.neg(a));
-                return `${b.toString()}, 0x40000000, { ${getLongString(toMontgomery(a))} }`;
+                buffV.setUint32(offset, b , true );
+                buffV.setUint32(offset + 4, 0x40000000 , true );
+                long(buffV, offset + 8, toMontgomery(a));
             }
 
-            function addLongMontgomery(a) {
-                return `0, 0xC0000000, { ${getLongString(toMontgomery(a))} }`;
+            function longMontgomery(a) {
+                buffV.setUint32(offset, 0 , true );
+                buffV.setUint32(offset + 4, 0xC0000000 , true );
+                long(buffV, offset + 8, toMontgomery(a));
             }
 
-            function getLongString(a) {
-                let S = "";
+            function long(buffV, offset, a) {
+
+                let p = offset;
                 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 + ",";
+                for (let i=0; i<self.F.n64*2; i++) {
+                    const idx = arr.length-1-i;
 
                     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";
+                        buffV.setUint32(p, arr[idx], true);
                     } else {
-                        S += "0LL";
+                        buffV.setUint32(p, 0, true);
                     }
+                    p+= 4;
                 }
-
-                return S;
             }
 
             function toMontgomery(a) {
@@ -548,101 +581,139 @@ class BuilderC {
             }
 
         }
+
     }
 
     _buildFunctions(code) {
+        const listedFunctions = [];
         for (let i=0; i<this.functions.length; i++) {
             const cfb = this.functions[i];
             cfb.build(code);
+            if (this.functions[i].type == "COMPONENT") {
+                this.functionIdx[this.functions[i].name] = listedFunctions.length;
+                listedFunctions.push(i);
+            }
         }
+
+        code.push("// Function Table");
+        code.push(`Circom_ComponentFunction _functionTable[${listedFunctions.length}] = {`);
+        for (let i=0; i<listedFunctions.length; i++) {
+            const sep = i>0 ? "    ," : "     ";
+            code.push(`${sep}${this.functions[listedFunctions[i]].name}`);
+        }
+        code.push("};");
     }
 
-    _buildComponents(code) {
-        code.push("// Components");
-        code.push(`Circom_Component _components[${this.components.length}] = {`);
+
+    async _buildComponents(fdData) {
+
+        const buff = new Uint8Array(32);
+        const buffV = new DataView(buff.buffer);
+
+        while (fdData.pos % 8) fdData.pos++;
+        this.pComponents = fdData.pos;
+
         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}}`);
+
+            utils.setUint64(buffV, 0, this.hashMapPointers[c.hashMapName], true);
+            utils.setUint64(buffV, 8, c.entryTablePointer, true);
+            utils.setUint64(buffV, 16, this.functionIdx[c.functionName], true);
+            buffV.setUint32(24, c.nInSignals, true);
+            buffV.setUint32(28, c.newThread ? 1 : 0, true);
+
+            await fdData.write(buff);
         }
-        code.push("};");
     }
 
-    _buildMapIsInput(code) {
-        code.push("// mapIsInput");
-        code.push(`u32 _mapIsInput[${this.mapIsInput.length}] = {`);
-        let line = "";
+    async _buildMapIsInput(fdData) {
+
+        const buff = new Uint8Array(this.mapIsInput.length * 4);
+        const buffV = new DataView(buff.buffer);
+
+        while (fdData.pos % 8) fdData.pos++;
+        this.pMapIsInput = fdData.pos;
+
         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;
+            buffV.setUint32(4*i, this.mapIsInput[i], true);
         }
+
+        await fdData.write(buff);
     }
 
-    _buildWit2Sig(code) {
-        code.push("// Witness to Signal Table");
-        code.push(`int _wit2sig[${this.wit2sig.length}] = {`);
-        let line = "";
+    async _buildWit2Sig(fdData) {
+
+        const buff = new Uint8Array(this.wit2sig.length * 4);
+        const buffV = new DataView(buff.buffer);
+
+        while (fdData.pos % 8) fdData.pos++;
+        this.pWit2Sig = fdData.pos;
+
         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 = "";
-            }
+
+            buffV.setUint32(4*i, this.wit2sig[i], true);
         }
-        if (line != "") code.push("    "+line);
-        code.push("};");
+
+        await fdData.write(buff);
     }
 
-    _buildCircuitVar(code) {
+    async _buildCircuitVar(fdData) {
 
-        code.push(
-            "// Circuit Variable",
-            "Circom_Circuit _circuit = {" ,
-            "   NSignals,",
-            "   NComponents,",
-            "   NInputs,",
-            "   NOutputs,",
-            "   NVars,",
-            "   _wit2sig,",
-            "   _components,",
-            "   _mapIsInput,",
-            "   _constants,",
-            "   __P__",
-            "};"
-        );
+        const buff = new Uint8Array(76);
+        const buffV = new DataView(buff.buffer);
+
+        utils.setUint64(buffV, 0, this.pWit2Sig, true);
+        utils.setUint64(buffV, 8, this.pComponents, true);
+        utils.setUint64(buffV, 16, this.pMapIsInput, true);
+        utils.setUint64(buffV, 24, this.pConstants, true);
+        utils.setUint64(buffV, 32, this.pPriemStr, true);
+        utils.setUint64(buffV, 40, this.pCets, true);
+
+        buffV.setUint32(48, this.header.NSignals, true);
+        buffV.setUint32(52, this.header.NComponents, true);
+        buffV.setUint32(56, this.header.NOutputs, true);
+        buffV.setUint32(60, this.header.NInputs, true);
+        buffV.setUint32(64, this.header.NVars, true);
+        buffV.setUint32(68, this.nCets, true);
+        buffV.setUint32(72, this.header.NPublic, true);
+
+        fdData.pos = 0;
+
+        await fdData.write(buff);
+    }
+
+    async _buildPrimeStr(fdData) {
+        this.pPriemStr = fdData.pos;
+        const strBuff = new TextEncoder("utf-8").encode(this.header.P.toString());
+        await fdData.write(strBuff);
+
+        const zB = new Uint8Array(1);
+        zB[0] =0;
+        await fdData.write(zB);
     }
 
 
-    async build(fd) {
+    async build(fdCode, fdData) {
         const encoder = new TextEncoder("utf-8");
+        fdData.pos = 76;
+        while (fdData.pos % 8) fdData.pos++;
+
         const code=new BigArray();
         this._buildHeader(code);
-        this._buildSizes(code);
-        this._buildConstants(code);
-        this._buildHashMaps(code);
-        this._buildComponentEntriesTables(code);
+        await this._buildPrimeStr(fdData);
+        await this._buildSizes(fdData);
+        await this._buildConstants(fdData);
+        await this._buildHashMaps(fdData);
+        await this._buildComponentEntriesTables(fdData);
         this._buildFunctions(code);
-        this._buildComponents(code);
-        this._buildMapIsInput(code);
-        this._buildWit2Sig(code);
-        this._buildCircuitVar(code);
+        await this._buildComponents(fdData);
+        await this._buildMapIsInput(fdData);
+        await this._buildWit2Sig(fdData);
+        await this._buildCircuitVar(fdData);
         await writeCode(code);
 
         async function writeCode(c) {
@@ -651,7 +722,7 @@ class BuilderC {
                     await writeCode(c[i]);
                 }
             } else if (typeof c === "string") {
-                await fd.write(encoder.encode(c + "\n"));
+                await fdCode.write(encoder.encode(c + "\n"));
             }
         }
     }

ports/c/tester.js

@@ -31,6 +31,7 @@ async function  c_tester(circomFile, _options) {
     const options = Object.assign({}, _options);
 
     options.cSourceFile = await fastFile.createOverride(path.join(dir.path, baseName + ".cpp"));
+    options.dataFile = await fastFile.createOverride(path.join(dir.path, baseName + ".dat"));
     options.symWriteStream = fs.createWriteStream(path.join(dir.path, baseName + ".sym"));
     options.r1csFileName = path.join(dir.path, baseName + ".r1cs");
 
@@ -38,14 +39,15 @@ async function  c_tester(circomFile, _options) {
     await compiler(circomFile, options);
 
     await options.cSourceFile.close();
+    await options.dataFile.close();
 
     const source = await buildZqField(options.p, "Fr");
 
     // console.log(dir.path);
 
     await fs.promises.writeFile(path.join(dir.path, "fr.asm"), source.asm, "utf8");
-    await fs.promises.writeFile(path.join(dir.path, "fr.h"), source.h, "utf8");
-    await fs.promises.writeFile(path.join(dir.path, "fr.c"), source.c, "utf8");
+    await fs.promises.writeFile(path.join(dir.path, "fr.hpp"), source.hpp, "utf8");
+    await fs.promises.writeFile(path.join(dir.path, "fr.cpp"), source.cpp, "utf8");
 
     let pThread = "";
 
@@ -66,7 +68,7 @@ async function  c_tester(circomFile, _options) {
                ` ${path.join(cdir,  "main.cpp")}` +
                ` ${path.join(cdir,  "calcwit.cpp")}` +
                ` ${path.join(cdir,  "utils.cpp")}` +
-               ` ${path.join(dir.path,  "fr.c")}` +
+               ` ${path.join(dir.path,  "fr.cpp")}` +
                ` ${path.join(dir.path,  "fr.o")}` +
                ` ${path.join(dir.path, baseName + ".cpp")} ` +
                ` -o ${path.join(dir.path, baseName)}` +

ports/wasm/build_runtime.js

@@ -384,9 +384,9 @@ module.exports = function buildRuntime(module, builder) {
                     "error",
                     c.i32_const(errs.ACCESSING_NOT_ASSIGNED_SIGNAL.code),
                     c.i32_const(errs.ACCESSING_NOT_ASSIGNED_SIGNAL.pointer),
-                    c.i32_const(0),
-                    c.i32_const(0),
-                    c.i32_const(0),
+                    c.getLocal("cIdx"),
+                    c.getLocal("component"),
+                    c.getLocal("signal"),
                     c.i32_const(0)
                 )
             )
@@ -412,6 +412,42 @@ module.exports = function buildRuntime(module, builder) {
 
     }
 
+    function buildMultiGetSignal() {
+        const f = module.addFunction("multiGetSignal");
+        f.addParam("cIdx", "i32");
+        f.addParam("pR", "i32");
+        f.addParam("component", "i32");
+        f.addParam("signal", "i32");
+        f.addParam("n", "i32");
+        f.addLocal("i", "i32");
+
+        const c = f.getCodeBuilder();
+
+        f.addCode(
+            c.setLocal("i", c.i32_const(0)),
+            c.block(c.loop(
+                c.br_if(1, c.i32_eq(c.getLocal("i"), c.getLocal("n"))),
+                c.call(
+                    "getSignal",
+                    c.getLocal("cIdx"),
+                    c.i32_add(
+                        c.getLocal("pR"),
+                        c.i32_mul(
+                            c.getLocal("i"),
+                            c.i32_const(builder.sizeFr)
+                        )
+                    ),
+                    c.getLocal("component"),
+                    c.i32_add(
+                        c.getLocal("signal"),
+                        c.getLocal("i")
+                    )
+                ),
+                c.setLocal("i", c.i32_add(c.getLocal("i"), c.i32_const(1))),
+                c.br(0)
+            ))
+        );
+    }
 
     function buildSetSignal() {
         const f = module.addFunction("setSignal");
@@ -473,7 +509,7 @@ module.exports = function buildRuntime(module, builder) {
         );
 
         f.addCode(
-            c.if(   // If ( mapIsInput[s >> 5] & 1 << (s & 0x1f) )
+            c.if(   // If ( mapIsInput[s >> 5] & (1 << (s & 0x1f)) )
                 c.i32_and(
                     c.i32_load(
                         c.i32_add(
@@ -619,6 +655,35 @@ module.exports = function buildRuntime(module, builder) {
         ));
     }
 
+    function buildCheckAssert() {
+        const f = module.addFunction("checkAssert");
+        f.addParam("cIdx", "i32");
+        f.addParam("pA", "i32");
+        f.addParam("pStr", "i32");
+
+        const c = f.getCodeBuilder();
+
+        f.addCode(ifSanityCheck(c,
+            c.if (
+                c.i32_eqz(
+                    c.call(
+                        "Fr_isTrue",
+                        c.getLocal("pA"),
+                    )
+                ),
+                c.call(
+                    "error",
+                    c.i32_const(errs.ASSERT_DOES_NOT_MATCH.code),
+                    c.i32_const(errs.ASSERT_DOES_NOT_MATCH.pointer),
+                    c.getLocal("cIdx"),
+                    c.getLocal("pA"),
+                    c.getLocal("pStr"),
+                    c.i32_const(0)
+                )
+            )
+        ));
+    }
+
     function buildGetNVars() {
         const f = module.addFunction("getNVars");
         f.setReturnType("i32");
@@ -628,6 +693,15 @@ module.exports = function buildRuntime(module, builder) {
         f.addCode(c.i32_const(builder.header.NVars));
     }
 
+    function buildGetNPublic() {
+        const f = module.addFunction("getNPublic");
+        f.setReturnType("i32");
+
+        const c = f.getCodeBuilder();
+
+        f.addCode(c.i32_const(builder.header.NPublic));
+    }
+
     function buildGetFrLen() {
         const f = module.addFunction("getFrLen");
         f.setReturnType("i32");
@@ -818,13 +892,16 @@ module.exports = function buildRuntime(module, builder) {
 
     buildGetSignal();
     buildSetSignal();
+    buildMultiGetSignal();
 
     buildComponentStarted();
     buildComponentFinished();
 
     buildCheckConstraint();
+    buildCheckAssert();
 
     buildGetNVars();
+    buildGetNPublic();
     buildGetFrLen();
     buildGetPWitness();
     buildGetPRawPrime();
@@ -834,9 +911,11 @@ module.exports = function buildRuntime(module, builder) {
 
     module.exportFunction("init");
     module.exportFunction("getNVars");
+    module.exportFunction("getNPublic");
     module.exportFunction("getFrLen");
     module.exportFunction("getSignalOffset32");
     module.exportFunction("setSignal");
+    module.exportFunction("multiGetSignal");
     module.exportFunction("getPWitness");
     module.exportFunction("Fr_toInt");
     module.exportFunction("getPRawPrime");

ports/wasm/builder.js

@@ -62,8 +62,9 @@ class CodeBuilderWasm {
         this.ops.push({op: "SETSIGNAL", component, signal, value});
     }
 
-    getSignal(dLabel, component, signal) {
-        this.ops.push({op: "GETSIGNAL", dLabel, component, signal});
+    getSignal(dLabel, component, signal, n) {
+        if (typeof n == "undefined") n=1;
+        this.ops.push({op: "GETSIGNAL", dLabel, component, signal, n});
     }
 
     copyN(dLabel, offset, src, n) {
@@ -98,6 +99,9 @@ class CodeBuilderWasm {
         this.ops.push({op: "CHECKCONSTRAINT", a, b, strErr});
     }
 
+    checkAssert(a, strErr) {
+        this.ops.push({op: "CHECKASSERT", a, strErr});
+    }
 
     concat(cb) {
         this.ops.push(...cb.ops);
@@ -248,11 +252,12 @@ class CodeBuilderWasm {
             } else if (o.op == "GETSIGNAL") {
                 code.push(
                     c.call(
-                        "getSignal",
+                        "multiGetSignal",
                         c.getLocal("cIdx"),
                         this.fnBuilder._getPtr(c, o.dLabel),
                         this.fnBuilder._deRefInt(c, o.component),
-                        this.fnBuilder._deRefInt(c, o.signal)
+                        this.fnBuilder._deRefInt(c, o.signal),
+                        c.i32_const(o.n)
                     )
                 );
             } else if (o.op == "COPYN") {
@@ -332,6 +337,15 @@ class CodeBuilderWasm {
                         c.i32_const(this.fnBuilder.builder.module.allocString(o.strErr))
                     )
                 );
+            } else if (o.op == "CHECKASSERT") {
+                code.push(
+                    c.call(
+                        "checkAssert",
+                        c.getLocal("cIdx"),
+                        this.fnBuilder._deRefFr(c, o.a),
+                        c.i32_const(this.fnBuilder.builder.module.allocString(o.strErr))
+                    )
+                );
             } else if (o.op == "LOG") {
                 code.push(
                     c.call(
@@ -767,20 +781,21 @@ class BuilderWasm {
 
     _buildHeader(module) {
 
-        this.pCircuit = module.alloc(48);
+        this.pCircuit = module.alloc(52);
 
         this.pNSignals = this.pCircuit;
         this.pNComponents = this.pCircuit + 4;
         this.pNInputs = this.pCircuit + 8;
         this.pNOutputs = this.pCircuit + 12;
         this.pNVars = this.pCircuit + 16;
-        this.ppWit2sig = this.pCircuit + 20;
-        this.ppComponents = this.pCircuit + 24;
-        this.ppMapIsInput = this.pCircuit + 28;
-        this.ppConstants = this.pCircuit + 32;
-        this.ppSignals = this.pCircuit + 36;
-        this.ppInputSignalsToTrigger = this.pCircuit + 40;
-        this.ppSignalsAssigned = this.pCircuit + 44;
+        this.pNPublic = this.pCircuit + 20;
+        this.ppWit2sig = this.pCircuit + 24;
+        this.ppComponents = this.pCircuit + 28;
+        this.ppMapIsInput = this.pCircuit + 32;
+        this.ppConstants = this.pCircuit + 36;
+        this.ppSignals = this.pCircuit + 40;
+        this.ppInputSignalsToTrigger = this.pCircuit + 44;
+        this.ppSignalsAssigned = this.pCircuit + 48;
     }
 
     _buildSizes(module) {
@@ -971,6 +986,7 @@ class BuilderWasm {
         module.addData(this.pNInputs, intToBytes32(this.header.NInputs));
         module.addData(this.pNOutputs, intToBytes32(this.header.NOutputs));
         module.addData(this.pNVars, intToBytes32(this.header.NVars));
+        module.addData(this.pNPublic, intToBytes32(this.header.NPublic));
         module.addData(this.ppWit2sig, intToBytes32(this.pWit2sig));
         module.addData(this.ppComponents, intToBytes32(this.pComponents));
         module.addData(this.ppMapIsInput, intToBytes32(this.pMapIsInput));

ports/wasm/errs.js

@@ -7,4 +7,5 @@ module.exports = {
     SIGNAL_ASSIGNED_TWICE:          {code: 6, str: "Signal assigned twice"},
     CONSTRAIN_DOES_NOT_MATCH:       {code: 7, str: "Constraint doesn't match"},
     MAPISINPUT_DONT_MATCH:          {code: 8, str: "MapIsInput don't match"},
+    ASSERT_DOES_NOT_MATCH:          {code: 9, str: "Assert not satisfied"},
 };

src/build.js

@@ -78,7 +78,7 @@ function buildEntryTables(ctx) {
             });
         }
 
-        ctx.builder.addComponentEntriesTable(componentEntriesTableName, componentEntriesTable);
+        ctx.builder.addComponentEntriesTable(componentEntriesTableName, componentEntriesTable, i);
 
         ctx.components[i].htName = htName;
         ctx.components[i].etName = componentEntriesTableName;
@@ -196,6 +196,7 @@ function buildHeader(ctx) {
         NInputs: ctx.components[ ctx.getComponentIdx("main") ].nInSignals,
         NOutputs: ctx.totals[ ctx.stOUTPUT ],
         NVars: ctx.totals[ctx.stONE] + ctx.totals[ctx.stOUTPUT] + ctx.totals[ctx.stPUBINPUT] + ctx.totals[ctx.stPRVINPUT] + ctx.totals[ctx.stINTERNAL],
+        NPublic: ctx.totals[ctx.stOUTPUT] + ctx.totals[ctx.stPUBINPUT],
         P: ctx.F.p
     });
 }

src/compiler.js

@@ -81,10 +81,6 @@ async function compile(srcFile, options) {
         throw new Error("A main component must be defined");
     }
 
-    if (ctx.verbose) console.log("Classify Signals");
-    measures.classifySignals = -performance.now();
-    classifySignals(ctx);
-    measures.classifySignals += performance.now();
 
     if (ctx.verbose) console.log("Reduce Constants");
     measures.reduceConstants = -performance.now();
@@ -108,9 +104,13 @@ async function compile(srcFile, options) {
         measures.reduceConstraints += performance.now();
 
     }
-
     if (ctx.verbose) console.log("NConstraints After: "+ctx.constraints.length);
 
+    if (ctx.verbose) console.log("Classify Signals");
+    measures.classifySignals = -performance.now();
+    classifySignals(ctx);
+    measures.classifySignals += performance.now();
+
     measures.generateWitnessNames = -performance.now();
     generateWitnessNames(ctx);
     measures.generateWitnessNames += performance.now();
@@ -134,7 +134,7 @@ async function compile(srcFile, options) {
         measures.generateC = -performance.now();
         ctx.builder = new BuilderC(options.prime, ctx.verbose);
         build(ctx);
-        await ctx.builder.build(options.cSourceFile);
+        await ctx.builder.build(options.cSourceFile, options.dataFile);
         measures.generateC += performance.now();
     }
 
@@ -183,28 +183,36 @@ function classifySignals(ctx) {
 
     function priorize(t1, t2) {
         if ((t1 == ERROR) || (t2==ERROR)) return ERROR;
-        if (t1 == ctx.stINTERNAL) {
-            return t2;
-        } else if (t2==ctx.stINTERNAL) {
-            return t1;
-        }
         if ((t1 == ctx.stONE) || (t2 == ctx.stONE)) return ctx.stONE;
         if ((t1 == ctx.stOUTPUT) || (t2 == ctx.stOUTPUT)) return ctx.stOUTPUT;
+        if ((t1 == ctx.stPUBINPUT) || (t2 == ctx.stPUBINPUT)) return ctx.stPUBINPUT;
+        if ((t1 == ctx.stPRVINPUT) || (t2 == ctx.stPRVINPUT)) return ctx.stPRVINPUT;
+        if ((t1 == ctx.stINTERNAL) || (t2 == ctx.stINTERNAL)) return ctx.stINTERNAL;
         if ((t1 == ctx.stCONSTANT) || (t2 == ctx.stCONSTANT)) return ctx.stCONSTANT;
         if ((t1 == ctx.stDISCARDED) || (t2 == ctx.stDISCARDED)) return ctx.stDISCARDED;
         if (t1!=t2) return ERROR;
         return t1;
     }
 
+    for (let i=0; i<ctx.constraints.length; i++) {
+        if ((ctx.verbose)&&(i%100000 == 0)) console.log(`marking as internal: ${i}/${ctx.constraints.length}`);
+
+        const c = ctx.constraints[i];
+        for (let s in c.a.coefs) ctx.signals[s].c = ctx.stINTERNAL;
+        for (let s in c.b.coefs) ctx.signals[s].c = ctx.stINTERNAL;
+        for (let s in c.c.coefs) ctx.signals[s].c = ctx.stINTERNAL;
+    }
+
+
     // First classify the signals
     for (let s=0; s<ctx.signals.length; s++) {
         if ((ctx.verbose)&&(s%100000 == 0)) console.log(`classify signals: ${s}/${ctx.signals.length}`);
         const signal = ctx.signals[s];
-        let tAll = ctx.stINTERNAL;
+        let tAll = ctx.stDISCARDED;
         let lSignal = signal;
         let end = false;
         while (!end) {
-            let t = lSignal.c || ctx.stINTERNAL;
+            let t = lSignal.c || ctx.stDISCARDED;
             if (s == 0) {
                 t = ctx.stONE;
             } else if (lSignal.o & ctx.MAIN) {
@@ -318,41 +326,53 @@ async function reduceConstrains(ctx) {
         const c = ctx.constraints[i];
         for (let s in c.a.coefs) {
             if (!insertedSig[s]) {
-                if (!sig2constraint[s]) sig2constraint[s] = [];
-                sig2constraint[s].push(i);
+                if (!sig2constraint[s]) sig2constraint[s] = {};
+                sig2constraint[s][i] = true;
                 insertedSig[s] = true;
             }
         }
         for (let s in c.b.coefs) {
             if (!insertedSig[s]) {
-                if (!sig2constraint[s]) sig2constraint[s] = [];
-                sig2constraint[s].push(i);
+                if (!sig2constraint[s]) sig2constraint[s] = {};
+                sig2constraint[s][i] = true;
                 insertedSig[s] = true;
             }
         }
         for (let s in c.c.coefs) {
             if (!insertedSig[s]) {
-                if (!sig2constraint[s]) sig2constraint[s] = [];
-                sig2constraint[s].push(i);
+                if (!sig2constraint[s]) sig2constraint[s] = {};
+                sig2constraint[s][i] = true;
                 insertedSig[s] = true;
             }
         }
-        possibleConstraints[i] = i;
+        possibleConstraints[i] = ctx.constraints.length - i -1;
     }
 
+    let totalRemoved = 0;
     while (possibleConstraints.length >0) {
-        nextPossibleConstraints = new BigArray();
-        removedSignals = new BigArray();
+        if (possibleConstraints.length>1<<20) {
+            nextPossibleConstraints = new BigArray();
+        } else {
+            nextPossibleConstraints = {};
+        }
+        removedSignals = {};
         nRemoved = 0;
-        lIdx = new BigArray();
+        lIdx = {};
         for (let i=0;i<possibleConstraints.length;i++) {
             if ((ctx.verbose)&&(i%10000 == 0)) {
                 await Promise.resolve();
                 console.log(`reducing constraints: ${i}/${possibleConstraints.length}   reduced: ${nRemoved}`);
             }
+
             const c = ctx.constraints[possibleConstraints[i]];
             if (!c) continue;
 
+            // Limit of number of lelements removed per step
+            if (nRemoved>5000000) {
+                nextPossibleConstraints[possibleConstraints[i]] = true;
+                continue;
+            }
+
             // Swap a and b if b has more variables.
             if (Object.keys(c.b).length > Object.keys(c.a).length) {
                 const aux = c.a;
@@ -378,27 +398,37 @@ async function reduceConstrains(ctx) {
                 const freeC = substituteRemoved(c.c);
                 const isolatedSignal = getFirstInternalSignal(ctx, freeC);
                 if (isolatedSignal) {
-    //                console.log(isolatedSignal);
-    //                console.log(freeC);
                     removedSignals[isolatedSignal] = isolateSignal(freeC, isolatedSignal);
                     if (lIdx[isolatedSignal]) {
-                        lIdx[isolatedSignal].forEach( (s) => {
+                        const sigs = Object.keys(lIdx[isolatedSignal]);
+
+                        for (let k=0; k<sigs.length; k++) {
+                            const s = sigs[k];
+                            const oldLC = removedSignals[s];
                             removedSignals[s] = substitute(removedSignals[s], isolatedSignal, removedSignals[isolatedSignal]);
-                        });
+                            if (oldLC !== removedSignals[s]) addTolIdx(removedSignals[s], s);
+                        }
                     }
 
                     addTolIdx(removedSignals[isolatedSignal], isolatedSignal);
                     ctx.constraints[possibleConstraints[i]] = null;
                     nRemoved ++;
 
-                    sig2constraint[isolatedSignal].forEach( (s) => {
-                        nextPossibleConstraints[s] = true;
-                    });
+                    delete lIdx[isolatedSignal];
+
+                    const cts = Object.keys(sig2constraint[isolatedSignal]);
+                    for (let k=0; k<cts.length; k++) {
+                        if (ctx.constraints[cts[k]]) nextPossibleConstraints[cts[k]] = true;
+                    }
                 }
             }
         }
 
-        nextPossibleConstraints = nextPossibleConstraints.getKeys();
+        if (nextPossibleConstraints.getKeys) {
+            nextPossibleConstraints = nextPossibleConstraints.getKeys();
+        } else {
+            nextPossibleConstraints = Object.keys(nextPossibleConstraints);
+        }
 
         for (let i=0; i<nextPossibleConstraints.length;i++) {
             if ((ctx.verbose)&&(i%10000 == 0)) {
@@ -408,9 +438,9 @@ async function reduceConstrains(ctx) {
             const c = ctx.constraints[nextPossibleConstraints[i]];
             if (c) {
                 const nc = {
-                    a: substituteRemoved(c.a),
-                    b: substituteRemoved(c.b),
-                    c: substituteRemoved(c.c)
+                    a: substituteRemoved(c.a, nextPossibleConstraints[i]),
+                    b: substituteRemoved(c.b, nextPossibleConstraints[i]),
+                    c: substituteRemoved(c.c, nextPossibleConstraints[i])
                 };
                 if (ctx.lc.isZero(nc)) {
                     delete ctx.constraints[nextPossibleConstraints[i]];
@@ -420,7 +450,7 @@ async function reduceConstrains(ctx) {
             }
         }
 
-        const removedSignalsList = removedSignals.getKeys;
+        const removedSignalsList = Object.keys(removedSignals);
 
         for (let i=0; i<removedSignalsList.length; i++) {
             if ((ctx.verbose    )&&(i%100000 == 0)) console.log(`removing signals: ${i}/${removedSignalsList.length}`);
@@ -431,12 +461,23 @@ async function reduceConstrains(ctx) {
                 lSignal = ctx.signals[lSignal.e];
             }
 
-            lSignal.c = ctx.stDISCARDED;
+            sig2constraint[s] = null;
         }
 
+/*
+        possibleConstraints = new BigArray();
+        // Reverse
+        for (let i=0; i<nextPossibleConstraints.length; i++) {
+            possibleConstraints[i] = nextPossibleConstraints[nextPossibleConstraints.length -1 -i];
+        }
+*/
         possibleConstraints = nextPossibleConstraints;
+
+        totalRemoved += nRemoved;
+        if (ctx.verbose) console.log(`Removed: ${totalRemoved} TotalConstraints: ${ctx.constraints.length}` );
     }
 
+
     let o=0;
     for (let i=0; i<ctx.constraints.length;i++) {
         if ((ctx.verbose)&&(i%100000 == 0)) console.log(`reordering constraints: ${i}/${ctx.constraints.length}`);
@@ -454,7 +495,12 @@ async function reduceConstrains(ctx) {
         for (let k in l.coefs) {
             k = Number(k);
             const signal = ctx.signals[k];
-            if ((signal.c == ctx.stINTERNAL)&&(!ctx.F.isZero(l.coefs[k])) &&(!removedSignals[k])) return k;
+            if  (  (  ((signal.o & ctx.MAIN) == 0)
+                    ||(   ((signal.o & ctx.IN) == 0)
+                        &&((signal.o & ctx.OUT) == 0)))
+                 &&((signal.o & ctx.ONE) ==0)
+                 &&(!ctx.F.isZero(l.coefs[k]))
+                 &&(!removedSignals[k])) return k;
         }
         return null;
     }
@@ -476,7 +522,7 @@ async function reduceConstrains(ctx) {
         return eq;
     }
 
-    function substituteRemoved(lc) {
+    function substituteRemoved(lc, idxConstraint) {
         const newLc = ctx.lc._clone(lc);
         for (let k in lc.coefs) {
             if (removedSignals[k]) {
@@ -491,6 +537,10 @@ async function reduceConstrains(ctx) {
                             newLc.coefs[k2] = newP;
                         }
                     }
+                    if ((typeof idxConstraint != "undefined")&&(k2!=0)) {
+                        if (!sig2constraint[k2]) sig2constraint[k2] = {};
+                        sig2constraint[k2][idxConstraint] = true;
+                    }
                 }
             }
         }
@@ -524,318 +574,16 @@ async function reduceConstrains(ctx) {
     }
 
     function addTolIdx(lc, newS) {
-        for (let s in lc.coefs) {
-            if (!lIdx[s]) lIdx[s] = [];
-            lIdx[s].push(newS);
-        }
-    }
-
-
-}
-
-
-function reduceConstrains_old(ctx) {
-    indexVariables();
-    let possibleConstraints = ctx.constraints;
-    let ii=0;
-    while (possibleConstraints.length>0) {
-        let nextPossibleConstraints = new BigArray();
-        for (let i=0; i<possibleConstraints.length; i++) {
-            ii++;
-            if ((ctx.verbose)&&(ii%10000 == 0)) console.log("reducing constraints: ", i);
-            if (!ctx.constraints[i]) continue;
-            const c = ctx.constraints[i];
-
-            // Swap a and b if b has more variables.
-            if (Object.keys(c.b).length > Object.keys(c.a).length) {
-                const aux = c.a;
-                c.a=c.b;
-                c.b=aux;
+        const sigs = Object.keys(lc.coefs);
+        for (let k=0; k<sigs.length; k++) {
+            const s = sigs[k];
+            if (s) {
+                if (!lIdx[s]) lIdx[s] = {};
+                lIdx[s][newS] = true;
             }
-
-            // Mov to C if possible.
-            if (isConstant(c.a)) {
-                const ct = {t: "N", v: c.a.coefs[sONE]};
-                c.c = ctx.lc.add(ctx.lc.mul(c.b, ct), c.c);
-                c.a = { t: "LC", coefs: {} };
-                c.b = { t: "LC", coefs: {} };
-            }
-            if (isConstant(c.b)) {
-                const ct = {t: "N", v: c.b.coefs[sONE]};
-                c.c = ctx.lc.add(ctx.lc.mul(c.a, ct), c.c);
-                c.a = { t: "LC", coefs: {} };
-                c.b = { t: "LC", coefs: {} };
-            }
-
-            if (ctx.lc.isZero(c.a) || ctx.lc.isZero(c.b)) {
-                const isolatedSignal = getFirstInternalSignal(ctx, c.c);
-                if (isolatedSignal) {
-
-                    let lSignal = ctx.signals[isolatedSignal];
-                    while (lSignal.e>=0) {
-                        lSignal = ctx.signals[lSignal.e];
-                    }
-
-
-                    const isolatedSignalEquivalence = {
-                        t: "LC",
-                        coefs: {}
-                    };
-                    const invCoef = ctx.F.inv(c.c.coefs[isolatedSignal]);
-                    for (const s in c.c.coefs) {
-                        if (s != isolatedSignal) {
-                            const v = ctx.F.mul( ctx.F.neg(c.c.coefs[s]), invCoef);
-                            if (!ctx.F.isZero(v)) {
-                                isolatedSignalEquivalence.coefs[s] = v;
-                            }
-                        }
-                    }
-
-                    for (let j in lSignal.inConstraints) {
-                        if ((j!=i)&&(ctx.constraints[j])) {
-                            ctx.constraints[j] = ctx.lc.substitute(ctx.constraints[j], isolatedSignal, isolatedSignalEquivalence);
-                            linkSignalsConstraint(j);
-                            if (j<i) {
-                                nextPossibleConstraints.push(j);
-                            }
-                        }
-                    }
-
-                    ctx.constraints[i] = null;
-
-                    lSignal.c = ctx.stDISCARDED;
-                } else {
-                    if (ctx.lc.isZero(c.c)) ctx.constraints[i] = null;
-                }
-            }
-        }
-        possibleConstraints = nextPossibleConstraints;
-    }
-    unindexVariables();
-
-    // Pack the constraints
-    let o = 0;
-    for (let i=0; i<ctx.constraints.length; i++) {
-        if (ctx.constraints[i]) {
-            if (o != i) {
-                ctx.constraints[o] = ctx.constraints[i];
-            }
-            o++;
-        }
-    }
-    ctx.constraints.length = o;
-
-    function indexVariables() {
-        for (let i=0; i<ctx.constraints.length; i++) linkSignalsConstraint(i);
-    }
-
-    function linkSignalsConstraint(cidx) {
-        const ct = ctx.constraints[cidx];
-        for (let k in ct.a.coefs) linkSignal(k, cidx);
-        for (let k in ct.b.coefs) linkSignal(k, cidx);
-        for (let k in ct.c.coefs) linkSignal(k, cidx);
-    }
-
-    function unindexVariables() {
-        for (let s=0; s<ctx.signals.length; s++) {
-            let lSignal = ctx.signals[s];
-            while (lSignal.e>=0) {
-                lSignal = ctx.signals[lSignal.e];
-            }
-            if (lSignal.inConstraints) delete lSignal.inConstraints;
-        }
-    }
-
-/*
-    function unlinkSignal(signalName, cidx) {
-        let lSignal = ctx.signals[signalName];
-        while (lSignal.e>=0) {
-            lSignal = ctx.signals[lSignal.e];
-        }
-        if ((lSignal.inConstraints)&&(lSignal.inConstraints[cidx])) {
-            delete lSignal.inConstraints[cidx];
-        }
-    }
-*/
-
-    function linkSignal(signalName, cidx) {
-        let lSignal = ctx.signals[signalName];
-        while (lSignal.e>=0) {
-            lSignal = ctx.signals[lSignal.e];
-        }
-        if (!lSignal.inConstraints) lSignal.inConstraints = {};
-        lSignal.inConstraints[cidx] = true;
-    }
-
-    function getFirstInternalSignal(ctx, l) {
-        for (let k in l.coefs) {
-            const signal = ctx.signals[k];
-            if (signal.c == ctx.stINTERNAL) return k;
-        }
-        return null;
-    }
-
-    function isConstant(l) {
-        for (let k in l.coefs) {
-            if ((k != sONE) && (!ctx.F.isZero(l.coefs[k]))) return false;
-        }
-        if (!l.coefs[sONE] || ctx.F.isZero(l.coefs[sONE])) return false;
-        return true;
-    }
-
-}
-
-/*
-
-function buildCircuitDef(ctx, mainCode) {
-    const res = {
-        mainCode: mainCode
-    };
-    res.signalName2Idx = ctx.signalName2Idx;
-
-    res.components = [];
-    res.componentName2Idx = {};
-    for (let c in ctx.components) {
-        const idCoponent = res.components.length;
-        res.components.push({
-            name: c,
-            params: ctx.components[c].params,
-            template: ctx.components[c].template,
-            inputSignals: 0
-        });
-        res.componentName2Idx[c] = idCoponent;
-    }
-
-    res.signals = new Array(ctx.signalNames.length);
-    for (let i=0; i<ctx.signalNames.length; i++) {
-        res.signals[i] = {
-            names: ctx.signalNames[i],
-            triggerComponents: []
-        };
-        ctx.signalNames[i].map( (fullName) => {
-            const idComponet = res.componentName2Idx[ctx.signals[fullName].component];
-            if (ctx.signals[fullName].direction == "IN") {
-                res.signals[i].triggerComponents.push(idComponet);
-                res.components[idComponet].inputSignals++;
-            }
-        });
-    }
-
-    res.constraints = buildConstraints(ctx);
-
-    res.templates = ctx.templates;
-
-    res.functions = {};
-    for (let f in ctx.functions) {
-        res.functions[f] = {
-            params: ctx.functionParams[f],
-            func: ctx.functions[f]
-        };
-    }
-
-    res.nPrvInputs = ctx.totals.prvInput;
-    res.nPubInputs = ctx.totals.pubInput;
-    res.nInputs = res.nPrvInputs + res.nPubInputs;
-    res.nOutputs = ctx.totals.output;
-    res.nVars = res.nInputs + res.nOutputs + ctx.totals.one + ctx.totals.internal;
-    res.nConstants = ctx.totals.constant;
-    res.nSignals = res.nVars + res.nConstants;
-
-    return res;
-}
-
-*/
-
-
-/*
-    Build constraints
-
-A constraint like this
-
-      [s1 + 2*s2 + 3*s3] * [ s2 + 5*s4] - [s0        ] = 0
-      [     5*s2 + 6*s3] * [ s2 +     ] - [s0 + 2* s2] = 0
-      [s1 +          s3] * [ s2 + 5*s3] - [s4        ] = 0
-
-is converted to
-
-[
-    [{"1":"1","2":"2","3":"3"} , {"2":"1","4":"5"} , {"0":"1"         }],
-    [{        "2":"5","3":"6"} , {"2":"1"        } , {"0":"1", "2":"2"}],
-    [{"1":"1",        "3":"1"} , {"2":"1","3":"5"} , {"4":"1"         }]
-]
-           ^                            ^                  ^
-           |                            |                  |
-           A                            B                  C
-
-*/
-/*
-function buildConstraints(ctx) {
-    const res = [];
-
-    function fillLC(dst, src) {
-        if (src.t != "LC") throw new Error("Constraint is not a LINEARCOMBINATION");
-        for (let s in src.coefs) {
-            const v = src.coefs[s].toString();
-            const id = ctx.signalName2Idx[s];
-            dst[id] = v;
-        }
-    }
-
-    for (let i=0; i<ctx.constraints.length; i++) {
-        const A = {};
-        const B = {};
-        const C = {};
-
-        fillLC(A, ctx.constraints[i].a);
-        fillLC(B, ctx.constraints[i].b);
-        fillLC(C, ctx.lc.negate(ctx.constraints[i].c));
-
-        res.push([A,B,C]);
-    }
-
-    return res;
-}
-*/
-
-/*
-function buildSyms(ctx, strm) {
-
-    let nSyms;
-
-    addSymbolsComponent(ctx.mainComponent + ".", ctx.getComponentIdx(ctx.mainComponent));
-
-
-    function addSymbolsComponent(prefix, idComponet) {
-        for (let n in  ctx.components[idComponet].names.o) {
-            const entrie = ctx.components[idComponet].names.o[n];
-            addSymbolArray(prefix+n, entrie.type, entrie.sizes, entrie.offset);
-        }
-    }
-
-    function addSymbolArray(prefix, type, sizes, offset) {
-        if (sizes.length==0) {
-            if (type == "S") {
-                let s=offset;
-                while (ctx.signals[s].e >= 0) s = ctx.signals[s].e;
-                let wId = ctx.signals[s].id;
-                if (typeof(wId) == "undefined") wId=-1;
-                strm.write(`${offset},${wId},${prefix}\n`);
-                nSyms ++;
-                if ((ctx.verbose)&&(nSyms%10000 == 0)) console.log("Symbols saved: "+nSyms);
-            } else {
-                addSymbolsComponent(prefix+".", offset);
-            }
-            return 1;
-        } else {
-            let acc = 0;
-            for (let i=0; i<sizes[0]; i++) {
-                acc += addSymbolArray(`${prefix}[${i}]`, type, sizes.slice(1), offset + acc );
-            }
-            return acc;
         }
     }
 
 }
 
-*/
 

src/construction_phase.js

@@ -428,10 +428,17 @@ function execAssignement(ctx, ast) {
         }
 
         // Skip if an out is assigned directly to an input.
-        if ((!isIn)||(!isOut)) {
-            sDest.e = sIdx;
-        } else {
-            if (utils.isDefined(sSrc.v)) sDest.v = sSrc.v;
+        if (!(isIn&&isOut)) {
+            if (isIn) {
+                sDest.e = sIdx;
+            } else if (isOut) {
+                sSrc.e = dIdx;
+            } else {
+                sDest.e = sIdx;
+            }
+            if (!isOut) {
+                if (utils.isDefined(sSrc.v)) sDest.v = sSrc.v;
+            }
         }
     }
 }
@@ -567,9 +574,13 @@ function execFunctionCall(ctx, ast) {
         return;
     }
     if (ast.name == "assert") {
+        ast.fileName = ctx.fileName;
+        ast.filePath = ctx.filePath;
+
         const v = exec(ctx, ast.params[0]);
         const ev = val(ctx, v, ast);
-        if (ctx.F.isZero(ev)) return ctx.throwError(ast, "Assertion failed");
+        if ((typeof ev.v !== "undefined")&&(ctx.F.isZero(ev.v))) return ctx.throwError(ast, "Assertion failed");
+        return;
     }
 
     const fnc = ctx.functions[ast.name];
@@ -697,6 +708,9 @@ function execPin(ctx, ast) {
         if (sel.v[0].t != "N") return NQVAL;
         selsP.push(Scalar.toNumber(sel.v[0].v));
     }
+    if (!ctx.components[cIdx]) {
+        return ctx.throwError(ast, "Component not defined yet");
+    }
     const sIdx = ctx.components[cIdx].names.getSignalIdx(ast.pin.name, selsP);
 
     if (sIdx<0) return ctx.throwError(ast, "Signal not defined:" + buildFullName() );
@@ -874,7 +888,8 @@ function execOpOp(ctx, ast, op, lr) {
         right = {t:"N", v: ctx.F.one};
     }
 
-    if (!right) return ctx.throwError(ast, "adding a no number");
+    if (!right) return ctx.throwError(ast, "right operand is not initialized");
+    if (!resBefore) return ctx.throwError(ast, "left operand is not initialized");
 
     const resAfter = ctx.lc[op](resBefore, right);
     left.v[o] = resAfter;

src/gencode.js

@@ -284,6 +284,32 @@ function genDeclareComponent(ctx, ast) {
 }
 
 function genDeclareSignal(ctx, ast) {
+
+    const v = ctx.refs[ast.refId];
+
+    let sizes;
+    if (ast.name.selectors.length>0) {
+        sizes=[];
+        for (let i=0; i< ast.name.selectors.length; i++) {
+            const sizeRef = gen(ctx, ast.name.selectors[i]);
+            const size = ctx.refs[sizeRef];
+            if (size.sizes[0] != 1) return ctx.throwError(ast, "A selector cannot be an array");
+            if (size.used) return ctx.throwError(ast, "Signal size variables not allowed");
+            sizes.push(Scalar.toNumber(size.value[0]));
+        }
+        sizes = utils.accSizes(sizes);
+    } else {
+        sizes = [1,0];
+    }
+
+    if ((!v.sizes)&&(sizes)) {
+        v.sizes = sizes;
+    }
+
+    if (v.sizes) {
+        if (!utils.sameSizes(v.sizes, sizes)) return ctx.throwError(ast, "Redefined a signal with different sized");
+    }
+
     return ast.refId;
 }
 
@@ -414,12 +440,13 @@ function genVariable(ctx, ast) {
             vOffset = genGetSignalOffset(ctx, -1, ast.name);
         }
 
-        const resRef = newRef(ctx, "BIGINT", "_sigValue");
+        const sizes = v.sizes.slice(l);
+
+        const resRef = newRef(ctx, "BIGINT", "_sigValue", null, sizes);
         const res = ctx.refs[resRef];
         instantiateRef(ctx, resRef);
-        ctx.codeBuilder.getSignal(res.label, ["CC"], toRefA_Int1(ctx, ast, vOffset));
+        ctx.codeBuilder.getSignal(res.label, ["CC"], toRefA_Int1(ctx, ast, vOffset), sizes[0]);
         return resRef;
-
     } else if (v.type == "BIGINT") {
         const refOffset = genGetOffset(ctx, 0, v.sizes, ast.selectors );
         const offset = ctx.refs[refOffset];
@@ -486,13 +513,18 @@ function genPin(ctx, ast) {
         vsIdx = genGetSignalOffset(ctx, vcIdx, ast.pin.name);
     }
 
-    const resRef = newRef(ctx, "BIGINT", "_sigValue");
+    const l = ast.selectors ? ast.selectors.length : 0;
+
+    const sizes = [1,0]; // TODO, Treat array
+
+    const resRef = newRef(ctx, "BIGINT", "_sigValue", null, sizes);
     const res = ctx.refs[resRef];
     instantiateRef(ctx, resRef);
     ctx.codeBuilder.getSignal(
         res.label,
         toRefA_Int1(ctx, ast.component, vcIdx),
-        toRefA_Int1(ctx, ast.pin, vsIdx)
+        toRefA_Int1(ctx, ast.pin, vsIdx),
+        sizes[0]
     );
     return resRef;
 }
@@ -723,7 +755,15 @@ function genVarAssignment(ctx, ast, lRef, sels, rRef) {
 
     if (instantiated) {
         if (offset.used) {
-            ctx.codeBuilder.copyN(left.label, ["R", offset.label], ["R", right.label], right.sizes[0]);
+            let ot;
+            if (offset.type == "BIGINT") {
+                ot = "R";
+            } else if (offset.type == "INT") {
+                ot= "RI";
+            } else {
+                assert(false);
+            }
+            ctx.codeBuilder.copyN(left.label, [ot, offset.label], ["R", right.label], right.sizes[0]);
         } else {
             ctx.codeBuilder.copyN(left.label, ["V", offset.value[0]], ["R", right.label], right.sizes[0]);
         }
@@ -863,6 +903,12 @@ function genFunctionCall(ctx, ast) {
         ctx.codeBuilder.log(toRefA_Fr1(ctx, ast.params[0], vRef));
         return vRef;
     }
+    if (ast.name == "assert") {
+        const strErr = ast.fileName + ":" + ast.first_line + ":" + ast.first_column;
+        const vRef = gen(ctx, ast.params[0]);
+        ctx.codeBuilder.checkAssert(toRefA_Fr1(ctx, ast.params[0], vRef), strErr);
+        return vRef;
+    }
     const params = [];
     for (let i=0; i<ast.params.length; i++) {
         const pRef = gen(ctx, ast.params[i]);
@@ -937,7 +983,7 @@ function genLoop(ctx, ast) {
     if (ctx.error) return;
 
     const cond = ctx.refs[condRef];
-    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "Operation cannot be done on an array");
+    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "genLoop: Operation cannot be done on an array");
 
     if (cond.used) {
         inLoop = true;
@@ -1014,7 +1060,7 @@ function genIf(ctx, ast) {
     const condRef = gen(ctx, ast.condition);
     if (ctx.error) return;
     const cond = ctx.refs[condRef];
-    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "Operation cannot be done on an array");
+    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "genIf: Operation cannot be done on an array");
 
     if (cond.used) {
         let thenCode, elseCode;
@@ -1134,7 +1180,12 @@ function genOp(ctx, ast, op, nOps, adjustBool) {
         valRefs.push(ref);
         vals.push(v);
 
-        if (!utils.sameSizes(v.sizes, [1,0])) return ctx.throwError(ast, "Operation cannot be done on an array");
+        if (!utils.sameSizes(v.sizes, [1,0])) {
+            console.log("xx");
+            console.log(i);
+            console.log(v);
+            return ctx.throwError(ast, "genOp2: Operation cannot be done on an array");
+        }
         if (  (!v.used)
             &&(  (!utils.isDefined(v.value))
                ||(!utils.isDefined(v.value[0]))))
@@ -1170,7 +1221,7 @@ function genTerCon(ctx, ast) {
     const condRef = gen(ctx, ast.values[0]);
     if (ctx.error) return;
     const cond = ctx.refs[condRef];
-    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "Operation cannot be done on an array");
+    if (!utils.sameSizes(cond.sizes, [1,0])) return ctx.throwError(ast.condition, "genTer: Operation cannot be done on an array");
 
     if (cond.used) {
         let thenCode, elseCode;

src/r1csfile.js

@@ -8,8 +8,7 @@ module.exports.buildR1cs = buildR1cs;
 
 async function buildR1cs(ctx, fileName) {
 
-    const fd = await fastFile.createOverride(fileName);
-
+    const fd = await fastFile.createOverride(fileName, 1<<24, 1<<22);
 
     const buffBigInt = new Uint8Array(ctx.F.n8);
 
@@ -59,7 +58,7 @@ async function buildR1cs(ctx, fileName) {
         if ((ctx.verbose)&&(i%10000 == 0)) {
             if (ctx.verbose) console.log("writing constraint: ", i);
         }
-        await writeConstraint(ctx.constraints[i]);
+        await writeConstraint(ctx.constraints[i], i);
     }
 
     const constraintsSize = fd.pos - pConstraintsSize - 8;
@@ -89,13 +88,13 @@ async function buildR1cs(ctx, fileName) {
     const mapSize = fd.pos - pMapSize - 8;
 
     // Write sizes
-    await fd.writeULE32(headerSize, pHeaderSize);
-    await fd.writeULE32(constraintsSize, pConstraintsSize);
-    await fd.writeULE32(mapSize, pMapSize);
+    await fd.writeULE64(headerSize, pHeaderSize);
+    await fd.writeULE64(constraintsSize, pConstraintsSize);
+    await fd.writeULE64(mapSize, pMapSize);
 
     await fd.close();
 
-    function writeConstraint(c) {
+    function writeConstraint(c, ctIdx) {
         const n8 = ctx.F.n8;
         const idxA = Object.keys(c.a.coefs);
         const idxB = Object.keys(c.b.coefs);
@@ -109,6 +108,7 @@ async function buildR1cs(ctx, fileName) {
             const coef = idxA[i];
             let lSignal = ctx.signals[coef];
             while (lSignal.e >=0 ) lSignal = ctx.signals[lSignal.e];
+            if (lSignal.id >= NWires) throw new Error("Signal Coef A: " + coef + " Constraint: " + ctIdx + " id: " + lSignal.id);
             buffV.setUint32(o, lSignal.id, true); o+=4;
             ctx.F.toRprLE(buff, o, c.a.coefs[coef]); o+=n8;
         }
@@ -118,8 +118,8 @@ async function buildR1cs(ctx, fileName) {
             const coef = idxB[i];
             let lSignal = ctx.signals[coef];
             while (lSignal.e >=0 ) lSignal = ctx.signals[lSignal.e];
+            if (lSignal.id >= NWires) throw new Error("Signal Coef B: " + coef + " Constraint: " + ctIdx + " id: " + lSignal.id);
             buffV.setUint32(o, lSignal.id, true); o+=4;
-
             ctx.F.toRprLE(buff, o, c.b.coefs[coef]); o+=n8;
         }
 
@@ -128,6 +128,7 @@ async function buildR1cs(ctx, fileName) {
             const coef = idxC[i];
             let lSignal = ctx.signals[coef];
             while (lSignal.e >=0 ) lSignal = ctx.signals[lSignal.e];
+            if (lSignal.id >= NWires) throw new Error("Signal Coef C: " + coef + " Constraint: " + ctIdx + " id: " + lSignal.id);
             buffV.setUint32(o, lSignal.id, true); o+=4;
             ctx.F.toRprLE(buff, o, ctx.F.neg(c.c.coefs[coef])); o+=n8;
         }

src/utils.js

@@ -10,6 +10,7 @@ module.exports.fnvHash = fnvHash;
 module.exports.sameSizes = sameSizes;
 module.exports.isDefined = isDefined;
 module.exports.accSizes2Str = accSizes2Str;
+module.exports.setUint64 = setUint64;
 
 function ident(text) {
     if (typeof text === "string") {
@@ -90,6 +91,14 @@ function accSizes2Str(sizes) {
     return `[${sizes[0]/sizes[1]}]`+accSizes2Str(sizes.slice(1));
 }
 
+function setUint64(buffV, o, n) {
+    const sLSB = n >>> 0;
+    const sMSB = (n - sLSB) / 0x100000000;
+    buffV.setUint32(o, sLSB , true);
+    buffV.setUint32(o+4, sMSB , true);
+}
+
+
 
 
 

test/basiccases.js

@@ -46,7 +46,7 @@ async function doTest(tester, circuit, testVectors) {
 describe("basic cases", function () {
     this.timeout(100000);
 
-    for (let i=0; i<basicCases.length; i++) {
+    for (let i=0; i< basicCases.length; i++) {
         it("c/c++ " + basicCases[i].name, async () => {
             await doTest(c_tester, basicCases[i].circuit, basicCases[i].tv);
         });

test/basiccases.json

@@ -14,6 +14,17 @@
             }]
         ]
     },
+    {
+        "name": "fnarray",
+        "circuit": "fnarray.circom",
+        "tv": [
+            [{
+                "in": [1, 8, 25]
+            }, {
+                "out": [2, 16, 50]
+            }]
+        ]
+    },
     {
         "name": "add",
         "circuit": "add.circom",

test/circuits/fnarray.circom

@@ -0,0 +1,21 @@
+
+
+
+
+function calc(h) {
+    var res[3];
+    for (var i=0; i<3; i++) res[i] = h[i]*2;
+    return res;
+}
+
+template Test() {
+    signal input in[3];
+    signal output out[3];
+
+    var cout[3]  = calc(in);
+    for (var i=0; i<3; i++) out[i] <-- cout[i];
+
+    for (var i=0; i<3; i++) out[i] === in[i]*2;
+}
+
+component main = Test();