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"use strict"; function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); } Object.defineProperty(exports, "__esModule", { value: true }); exports.decode = decode; var _helperApiError = require("@webassemblyjs/helper-api-error"); var ieee754 = _interopRequireWildcard(require("@webassemblyjs/ieee754")); var utf8 = _interopRequireWildcard(require("@webassemblyjs/utf8")); var t = _interopRequireWildcard(require("@webassemblyjs/ast")); var _leb = require("@webassemblyjs/leb128"); var _helperWasmBytecode = _interopRequireDefault(require("@webassemblyjs/helper-wasm-bytecode")); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; } function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); } function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; } function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); } function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); } function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); } function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); } function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; } function toHex(n) { return "0x" + Number(n).toString(16); } function byteArrayEq(l, r) { if (l.length !== r.length) { return false; } for (var i = 0; i < l.length; i++) { if (l[i] !== r[i]) { return false; } } return true; } function decode(ab, opts) { var buf = new Uint8Array(ab); var getUniqueName = t.getUniqueNameGenerator(); var offset = 0; function getPosition() { return { line: -1, column: offset }; } function dump(b, msg) { if (opts.dump === false) return; var pad = "\t\t\t\t\t\t\t\t\t\t"; var str = ""; if (b.length < 5) { str = b.map(toHex).join(" "); } else { str = "..."; } console.log(toHex(offset) + ":\t", str, pad, ";", msg); } function dumpSep(msg) { if (opts.dump === false) return; console.log(";", msg); } /** * TODO(sven): we can atually use a same structure * we are adding incrementally new features */ var state = { elementsInFuncSection: [], elementsInExportSection: [], elementsInCodeSection: [], /** * Decode memory from: * - Memory section */ memoriesInModule: [], /** * Decoded types from: * - Type section */ typesInModule: [], /** * Decoded functions from: * - Function section * - Import section */ functionsInModule: [], /** * Decoded tables from: * - Table section */ tablesInModule: [], /** * Decoded globals from: * - Global section */ globalsInModule: [] }; function isEOF() { return offset >= buf.length; } function eatBytes(n) { offset = offset + n; } function readBytesAtOffset(_offset, numberOfBytes) { var arr = []; for (var i = 0; i < numberOfBytes; i++) { arr.push(buf[_offset + i]); } return arr; } function readBytes(numberOfBytes) { return readBytesAtOffset(offset, numberOfBytes); } function readF64() { var bytes = readBytes(ieee754.NUMBER_OF_BYTE_F64); var value = ieee754.decodeF64(bytes); if (Math.sign(value) * value === Infinity) { return { value: Math.sign(value), inf: true, nextIndex: ieee754.NUMBER_OF_BYTE_F64 }; } if (isNaN(value)) { var sign = bytes[bytes.length - 1] >> 7 ? -1 : 1; var mantissa = 0; for (var i = 0; i < bytes.length - 2; ++i) { mantissa += bytes[i] * Math.pow(256, i); } mantissa += bytes[bytes.length - 2] % 16 * Math.pow(256, bytes.length - 2); return { value: sign * mantissa, nan: true, nextIndex: ieee754.NUMBER_OF_BYTE_F64 }; } return { value: value, nextIndex: ieee754.NUMBER_OF_BYTE_F64 }; } function readF32() { var bytes = readBytes(ieee754.NUMBER_OF_BYTE_F32); var value = ieee754.decodeF32(bytes); if (Math.sign(value) * value === Infinity) { return { value: Math.sign(value), inf: true, nextIndex: ieee754.NUMBER_OF_BYTE_F32 }; } if (isNaN(value)) { var sign = bytes[bytes.length - 1] >> 7 ? -1 : 1; var mantissa = 0; for (var i = 0; i < bytes.length - 2; ++i) { mantissa += bytes[i] * Math.pow(256, i); } mantissa += bytes[bytes.length - 2] % 128 * Math.pow(256, bytes.length - 2); return { value: sign * mantissa, nan: true, nextIndex: ieee754.NUMBER_OF_BYTE_F32 }; } return { value: value, nextIndex: ieee754.NUMBER_OF_BYTE_F32 }; } function readUTF8String() { var lenu32 = readU32(); // Don't eat any bytes. Instead, peek ahead of the current offset using // readBytesAtOffset below. This keeps readUTF8String neutral with respect // to the current offset, just like the other readX functions. var strlen = lenu32.value; dump([strlen], "string length"); var bytes = readBytesAtOffset(offset + lenu32.nextIndex, strlen); var value = utf8.decode(bytes); return { value: value, nextIndex: strlen + lenu32.nextIndex }; } /** * Decode an unsigned 32bits integer * * The length will be handled by the leb librairy, we pass the max number of * byte. */ function readU32() { var bytes = readBytes(_leb.MAX_NUMBER_OF_BYTE_U32); var buffer = Buffer.from(bytes); return (0, _leb.decodeUInt32)(buffer); } function readVaruint32() { // where 32 bits = max 4 bytes var bytes = readBytes(4); var buffer = Buffer.from(bytes); return (0, _leb.decodeUInt32)(buffer); } function readVaruint7() { // where 7 bits = max 1 bytes var bytes = readBytes(1); var buffer = Buffer.from(bytes); return (0, _leb.decodeUInt32)(buffer); } /** * Decode a signed 32bits interger */ function read32() { var bytes = readBytes(_leb.MAX_NUMBER_OF_BYTE_U32); var buffer = Buffer.from(bytes); return (0, _leb.decodeInt32)(buffer); } /** * Decode a signed 64bits integer */ function read64() { var bytes = readBytes(_leb.MAX_NUMBER_OF_BYTE_U64); var buffer = Buffer.from(bytes); return (0, _leb.decodeInt64)(buffer); } function readU64() { var bytes = readBytes(_leb.MAX_NUMBER_OF_BYTE_U64); var buffer = Buffer.from(bytes); return (0, _leb.decodeUInt64)(buffer); } function readByte() { return readBytes(1)[0]; } function parseModuleHeader() { if (isEOF() === true || offset + 4 > buf.length) { throw new Error("unexpected end"); } var header = readBytes(4); if (byteArrayEq(_helperWasmBytecode["default"].magicModuleHeader, header) === false) { throw new _helperApiError.CompileError("magic header not detected"); } dump(header, "wasm magic header"); eatBytes(4); } function parseVersion() { if (isEOF() === true || offset + 4 > buf.length) { throw new Error("unexpected end"); } var version = readBytes(4); if (byteArrayEq(_helperWasmBytecode["default"].moduleVersion, version) === false) { throw new _helperApiError.CompileError("unknown binary version"); } dump(version, "wasm version"); eatBytes(4); } function parseVec(cast) { var u32 = readU32(); var length = u32.value; eatBytes(u32.nextIndex); dump([length], "number"); if (length === 0) { return []; } var elements = []; for (var i = 0; i < length; i++) { var _byte = readByte(); eatBytes(1); var value = cast(_byte); dump([_byte], value); if (typeof value === "undefined") { throw new _helperApiError.CompileError("Internal failure: parseVec could not cast the value"); } elements.push(value); } return elements; } // Type section // https://webassembly.github.io/spec/binary/modules.html#binary-typesec function parseTypeSection(numberOfTypes) { var typeInstructionNodes = []; dump([numberOfTypes], "num types"); for (var i = 0; i < numberOfTypes; i++) { var _startLoc = getPosition(); dumpSep("type " + i); var type = readByte(); eatBytes(1); if (type == _helperWasmBytecode["default"].types.func) { dump([type], "func"); var paramValtypes = parseVec(function (b) { return _helperWasmBytecode["default"].valtypes[b]; }); var params = paramValtypes.map(function (v) { return t.funcParam( /*valtype*/ v); }); var result = parseVec(function (b) { return _helperWasmBytecode["default"].valtypes[b]; }); typeInstructionNodes.push(function () { var endLoc = getPosition(); return t.withLoc(t.typeInstruction(undefined, t.signature(params, result)), endLoc, _startLoc); }()); state.typesInModule.push({ params: params, result: result }); } else { throw new Error("Unsupported type: " + toHex(type)); } } return typeInstructionNodes; } // Import section // https://webassembly.github.io/spec/binary/modules.html#binary-importsec function parseImportSection(numberOfImports) { var imports = []; for (var i = 0; i < numberOfImports; i++) { dumpSep("import header " + i); var _startLoc2 = getPosition(); /** * Module name */ var moduleName = readUTF8String(); eatBytes(moduleName.nextIndex); dump([], "module name (".concat(moduleName.value, ")")); /** * Name */ var name = readUTF8String(); eatBytes(name.nextIndex); dump([], "name (".concat(name.value, ")")); /** * Import descr */ var descrTypeByte = readByte(); eatBytes(1); var descrType = _helperWasmBytecode["default"].importTypes[descrTypeByte]; dump([descrTypeByte], "import kind"); if (typeof descrType === "undefined") { throw new _helperApiError.CompileError("Unknown import description type: " + toHex(descrTypeByte)); } var importDescr = void 0; if (descrType === "func") { var indexU32 = readU32(); var typeindex = indexU32.value; eatBytes(indexU32.nextIndex); dump([typeindex], "type index"); var signature = state.typesInModule[typeindex]; if (typeof signature === "undefined") { throw new _helperApiError.CompileError("function signature not found (".concat(typeindex, ")")); } var id = getUniqueName("func"); importDescr = t.funcImportDescr(id, t.signature(signature.params, signature.result)); state.functionsInModule.push({ id: t.identifier(name.value), signature: signature, isExternal: true }); } else if (descrType === "global") { importDescr = parseGlobalType(); var globalNode = t.global(importDescr, []); state.globalsInModule.push(globalNode); } else if (descrType === "table") { importDescr = parseTableType(i); } else if (descrType === "memory") { var memoryNode = parseMemoryType(0); state.memoriesInModule.push(memoryNode); importDescr = memoryNode; } else { throw new _helperApiError.CompileError("Unsupported import of type: " + descrType); } imports.push(function () { var endLoc = getPosition(); return t.withLoc(t.moduleImport(moduleName.value, name.value, importDescr), endLoc, _startLoc2); }()); } return imports; } // Function section // https://webassembly.github.io/spec/binary/modules.html#function-section function parseFuncSection(numberOfFunctions) { dump([numberOfFunctions], "num funcs"); for (var i = 0; i < numberOfFunctions; i++) { var indexU32 = readU32(); var typeindex = indexU32.value; eatBytes(indexU32.nextIndex); dump([typeindex], "type index"); var signature = state.typesInModule[typeindex]; if (typeof signature === "undefined") { throw new _helperApiError.CompileError("function signature not found (".concat(typeindex, ")")); } // preserve anonymous, a name might be resolved later var id = t.withRaw(t.identifier(getUniqueName("func")), ""); state.functionsInModule.push({ id: id, signature: signature, isExternal: false }); } } // Export section // https://webassembly.github.io/spec/binary/modules.html#export-section function parseExportSection(numberOfExport) { dump([numberOfExport], "num exports"); // Parse vector of exports for (var i = 0; i < numberOfExport; i++) { var _startLoc3 = getPosition(); /** * Name */ var name = readUTF8String(); eatBytes(name.nextIndex); dump([], "export name (".concat(name.value, ")")); /** * exportdescr */ var typeIndex = readByte(); eatBytes(1); dump([typeIndex], "export kind"); var indexu32 = readU32(); var index = indexu32.value; eatBytes(indexu32.nextIndex); dump([index], "export index"); var id = void 0, signature = void 0; if (_helperWasmBytecode["default"].exportTypes[typeIndex] === "Func") { var func = state.functionsInModule[index]; if (typeof func === "undefined") { throw new _helperApiError.CompileError("unknown function (".concat(index, ")")); } id = t.numberLiteralFromRaw(index, String(index)); signature = func.signature; } else if (_helperWasmBytecode["default"].exportTypes[typeIndex] === "Table") { var table = state.tablesInModule[index]; if (typeof table === "undefined") { throw new _helperApiError.CompileError("unknown table ".concat(index)); } id = t.numberLiteralFromRaw(index, String(index)); signature = null; } else if (_helperWasmBytecode["default"].exportTypes[typeIndex] === "Memory") { var memNode = state.memoriesInModule[index]; if (typeof memNode === "undefined") { throw new _helperApiError.CompileError("unknown memory ".concat(index)); } id = t.numberLiteralFromRaw(index, String(index)); signature = null; } else if (_helperWasmBytecode["default"].exportTypes[typeIndex] === "Global") { var global = state.globalsInModule[index]; if (typeof global === "undefined") { throw new _helperApiError.CompileError("unknown global ".concat(index)); } id = t.numberLiteralFromRaw(index, String(index)); signature = null; } else { console.warn("Unsupported export type: " + toHex(typeIndex)); return; } var endLoc = getPosition(); state.elementsInExportSection.push({ name: name.value, type: _helperWasmBytecode["default"].exportTypes[typeIndex], signature: signature, id: id, index: index, endLoc: endLoc, startLoc: _startLoc3 }); } } // Code section // https://webassembly.github.io/spec/binary/modules.html#code-section function parseCodeSection(numberOfFuncs) { dump([numberOfFuncs], "number functions"); // Parse vector of function for (var i = 0; i < numberOfFuncs; i++) { var _startLoc4 = getPosition(); dumpSep("function body " + i); // the u32 size of the function code in bytes // Ignore it for now var bodySizeU32 = readU32(); eatBytes(bodySizeU32.nextIndex); dump([bodySizeU32.value], "function body size"); var code = []; /** * Parse locals */ var funcLocalNumU32 = readU32(); var funcLocalNum = funcLocalNumU32.value; eatBytes(funcLocalNumU32.nextIndex); dump([funcLocalNum], "num locals"); var locals = []; for (var _i = 0; _i < funcLocalNum; _i++) { var _startLoc5 = getPosition(); var localCountU32 = readU32(); var localCount = localCountU32.value; eatBytes(localCountU32.nextIndex); dump([localCount], "num local"); var valtypeByte = readByte(); eatBytes(1); var type = _helperWasmBytecode["default"].valtypes[valtypeByte]; var args = []; for (var _i2 = 0; _i2 < localCount; _i2++) { args.push(t.valtypeLiteral(type)); } var localNode = function () { var endLoc = getPosition(); return t.withLoc(t.instruction("local", args), endLoc, _startLoc5); }(); locals.push(localNode); dump([valtypeByte], type); if (typeof type === "undefined") { throw new _helperApiError.CompileError("Unexpected valtype: " + toHex(valtypeByte)); } } code.push.apply(code, locals); // Decode instructions until the end parseInstructionBlock(code); var endLoc = getPosition(); state.elementsInCodeSection.push({ code: code, locals: locals, endLoc: endLoc, startLoc: _startLoc4, bodySize: bodySizeU32.value }); } } function parseInstructionBlock(code) { while (true) { var _startLoc6 = getPosition(); var instructionAlreadyCreated = false; var instructionByte = readByte(); eatBytes(1); if (instructionByte === 0xfe) { instructionByte = 0xfe00 + readByte(); eatBytes(1); } var instruction = _helperWasmBytecode["default"].symbolsByByte[instructionByte]; if (typeof instruction === "undefined") { throw new _helperApiError.CompileError("Unexpected instruction: " + toHex(instructionByte)); } if (typeof instruction.object === "string") { dump([instructionByte], "".concat(instruction.object, ".").concat(instruction.name)); } else { dump([instructionByte], instruction.name); } /** * End of the function */ if (instruction.name === "end") { var node = function () { var endLoc = getPosition(); return t.withLoc(t.instruction(instruction.name), endLoc, _startLoc6); }(); code.push(node); break; } var args = []; var namedArgs = void 0; if (instruction.name === "loop") { var _startLoc7 = getPosition(); var blocktypeByte = readByte(); eatBytes(1); var blocktype = _helperWasmBytecode["default"].blockTypes[blocktypeByte]; dump([blocktypeByte], "blocktype"); if (typeof blocktype === "undefined") { throw new _helperApiError.CompileError("Unexpected blocktype: " + toHex(blocktypeByte)); } var instr = []; parseInstructionBlock(instr); // preserve anonymous var label = t.withRaw(t.identifier(getUniqueName("loop")), ""); var loopNode = function () { var endLoc = getPosition(); return t.withLoc(t.loopInstruction(label, blocktype, instr), endLoc, _startLoc7); }(); code.push(loopNode); instructionAlreadyCreated = true; } else if (instruction.name === "if") { var _startLoc8 = getPosition(); var _blocktypeByte = readByte(); eatBytes(1); var _blocktype = _helperWasmBytecode["default"].blockTypes[_blocktypeByte]; dump([_blocktypeByte], "blocktype"); if (typeof _blocktype === "undefined") { throw new _helperApiError.CompileError("Unexpected blocktype: " + toHex(_blocktypeByte)); } var testIndex = t.withRaw(t.identifier(getUniqueName("if")), ""); var ifBody = []; parseInstructionBlock(ifBody); // Defaults to no alternate var elseIndex = 0; for (elseIndex = 0; elseIndex < ifBody.length; ++elseIndex) { var _instr = ifBody[elseIndex]; if (_instr.type === "Instr" && _instr.id === "else") { break; } } var consequentInstr = ifBody.slice(0, elseIndex); var alternate = ifBody.slice(elseIndex + 1); // wast sugar var testInstrs = []; var ifNode = function () { var endLoc = getPosition(); return t.withLoc(t.ifInstruction(testIndex, testInstrs, _blocktype, consequentInstr, alternate), endLoc, _startLoc8); }(); code.push(ifNode); instructionAlreadyCreated = true; } else if (instruction.name === "block") { var _startLoc9 = getPosition(); var _blocktypeByte2 = readByte(); eatBytes(1); var _blocktype2 = _helperWasmBytecode["default"].blockTypes[_blocktypeByte2]; dump([_blocktypeByte2], "blocktype"); if (typeof _blocktype2 === "undefined") { throw new _helperApiError.CompileError("Unexpected blocktype: " + toHex(_blocktypeByte2)); } var _instr2 = []; parseInstructionBlock(_instr2); // preserve anonymous var _label = t.withRaw(t.identifier(getUniqueName("block")), ""); var blockNode = function () { var endLoc = getPosition(); return t.withLoc(t.blockInstruction(_label, _instr2, _blocktype2), endLoc, _startLoc9); }(); code.push(blockNode); instructionAlreadyCreated = true; } else if (instruction.name === "call") { var indexu32 = readU32(); var index = indexu32.value; eatBytes(indexu32.nextIndex); dump([index], "index"); var callNode = function () { var endLoc = getPosition(); return t.withLoc(t.callInstruction(t.indexLiteral(index)), endLoc, _startLoc6); }(); code.push(callNode); instructionAlreadyCreated = true; } else if (instruction.name === "call_indirect") { var _startLoc10 = getPosition(); var indexU32 = readU32(); var typeindex = indexU32.value; eatBytes(indexU32.nextIndex); dump([typeindex], "type index"); var signature = state.typesInModule[typeindex]; if (typeof signature === "undefined") { throw new _helperApiError.CompileError("call_indirect signature not found (".concat(typeindex, ")")); } var _callNode = t.callIndirectInstruction(t.signature(signature.params, signature.result), []); var flagU32 = readU32(); var flag = flagU32.value; // 0x00 - reserved byte eatBytes(flagU32.nextIndex); if (flag !== 0) { throw new _helperApiError.CompileError("zero flag expected"); } code.push(function () { var endLoc = getPosition(); return t.withLoc(_callNode, endLoc, _startLoc10); }()); instructionAlreadyCreated = true; } else if (instruction.name === "br_table") { var indicesu32 = readU32(); var indices = indicesu32.value; eatBytes(indicesu32.nextIndex); dump([indices], "num indices"); for (var i = 0; i <= indices; i++) { var _indexu = readU32(); var _index = _indexu.value; eatBytes(_indexu.nextIndex); dump([_index], "index"); args.push(t.numberLiteralFromRaw(_indexu.value.toString(), "u32")); } } else if (instructionByte >= 0x28 && instructionByte <= 0x40) { /** * Memory instructions */ if (instruction.name === "grow_memory" || instruction.name === "current_memory") { var _indexU = readU32(); var _index2 = _indexU.value; eatBytes(_indexU.nextIndex); if (_index2 !== 0) { throw new Error("zero flag expected"); } dump([_index2], "index"); } else { var aligun32 = readU32(); var align = aligun32.value; eatBytes(aligun32.nextIndex); dump([align], "align"); var offsetu32 = readU32(); var _offset2 = offsetu32.value; eatBytes(offsetu32.nextIndex); dump([_offset2], "offset"); if (namedArgs === undefined) namedArgs = {}; namedArgs.offset = t.numberLiteralFromRaw(_offset2); } } else if (instructionByte >= 0x41 && instructionByte <= 0x44) { /** * Numeric instructions */ if (instruction.object === "i32") { var value32 = read32(); var value = value32.value; eatBytes(value32.nextIndex); dump([value], "i32 value"); args.push(t.numberLiteralFromRaw(value)); } if (instruction.object === "u32") { var valueu32 = readU32(); var _value = valueu32.value; eatBytes(valueu32.nextIndex); dump([_value], "u32 value"); args.push(t.numberLiteralFromRaw(_value)); } if (instruction.object === "i64") { var value64 = read64(); var _value2 = value64.value; eatBytes(value64.nextIndex); dump([Number(_value2.toString())], "i64 value"); var high = _value2.high, low = _value2.low; var _node = { type: "LongNumberLiteral", value: { high: high, low: low } }; args.push(_node); } if (instruction.object === "u64") { var valueu64 = readU64(); var _value3 = valueu64.value; eatBytes(valueu64.nextIndex); dump([Number(_value3.toString())], "u64 value"); var _high = _value3.high, _low = _value3.low; var _node2 = { type: "LongNumberLiteral", value: { high: _high, low: _low } }; args.push(_node2); } if (instruction.object === "f32") { var valuef32 = readF32(); var _value4 = valuef32.value; eatBytes(valuef32.nextIndex); dump([_value4], "f32 value"); args.push( // $FlowIgnore t.floatLiteral(_value4, valuef32.nan, valuef32.inf, String(_value4))); } if (instruction.object === "f64") { var valuef64 = readF64(); var _value5 = valuef64.value; eatBytes(valuef64.nextIndex); dump([_value5], "f64 value"); args.push( // $FlowIgnore t.floatLiteral(_value5, valuef64.nan, valuef64.inf, String(_value5))); } } else if (instructionByte >= 0xfe00 && instructionByte <= 0xfeff) { /** * Atomic memory instructions */ var align32 = readU32(); var _align = align32.value; eatBytes(align32.nextIndex); dump([_align], "align"); var _offsetu = readU32(); var _offset3 = _offsetu.value; eatBytes(_offsetu.nextIndex); dump([_offset3], "offset"); } else { for (var _i3 = 0; _i3 < instruction.numberOfArgs; _i3++) { var u32 = readU32(); eatBytes(u32.nextIndex); dump([u32.value], "argument " + _i3); args.push(t.numberLiteralFromRaw(u32.value)); } } if (instructionAlreadyCreated === false) { if (typeof instruction.object === "string") { var _node3 = function () { var endLoc = getPosition(); return t.withLoc(t.objectInstruction(instruction.name, instruction.object, args, namedArgs), endLoc, _startLoc6); }(); code.push(_node3); } else { var _node4 = function () { var endLoc = getPosition(); return t.withLoc(t.instruction(instruction.name, args, namedArgs), endLoc, _startLoc6); }(); code.push(_node4); } } } } // https://webassembly.github.io/spec/core/binary/types.html#limits function parseLimits() { var limitType = readByte(); eatBytes(1); var shared = limitType === 0x03; dump([limitType], "limit type" + (shared ? " (shared)" : "")); var min, max; if (limitType === 0x01 || limitType === 0x03 // shared limits ) { var u32min = readU32(); min = parseInt(u32min.value); eatBytes(u32min.nextIndex); dump([min], "min"); var u32max = readU32(); max = parseInt(u32max.value); eatBytes(u32max.nextIndex); dump([max], "max"); } if (limitType === 0x00) { var _u32min = readU32(); min = parseInt(_u32min.value); eatBytes(_u32min.nextIndex); dump([min], "min"); } return t.limit(min, max, shared); } // https://webassembly.github.io/spec/core/binary/types.html#binary-tabletype function parseTableType(index) { var name = t.withRaw(t.identifier(getUniqueName("table")), String(index)); var elementTypeByte = readByte(); eatBytes(1); dump([elementTypeByte], "element type"); var elementType = _helperWasmBytecode["default"].tableTypes[elementTypeByte]; if (typeof elementType === "undefined") { throw new _helperApiError.CompileError("Unknown element type in table: " + toHex(elementType)); } var limits = parseLimits(); return t.table(elementType, limits, name); } // https://webassembly.github.io/spec/binary/types.html#global-types function parseGlobalType() { var valtypeByte = readByte(); eatBytes(1); var type = _helperWasmBytecode["default"].valtypes[valtypeByte]; dump([valtypeByte], type); if (typeof type === "undefined") { throw new _helperApiError.CompileError("Unknown valtype: " + toHex(valtypeByte)); } var globalTypeByte = readByte(); eatBytes(1); var globalType = _helperWasmBytecode["default"].globalTypes[globalTypeByte]; dump([globalTypeByte], "global type (".concat(globalType, ")")); if (typeof globalType === "undefined") { throw new _helperApiError.CompileError("Invalid mutability: " + toHex(globalTypeByte)); } return t.globalType(type, globalType); } // function parseNameModule() { // const lenu32 = readVaruint32(); // eatBytes(lenu32.nextIndex); // console.log("len", lenu32); // const strlen = lenu32.value; // dump([strlen], "string length"); // const bytes = readBytes(strlen); // eatBytes(strlen); // const value = utf8.decode(bytes); // return [t.moduleNameMetadata(value)]; // } // this section contains an array of function names and indices function parseNameSectionFunctions() { var functionNames = []; var numberOfFunctionsu32 = readU32(); var numbeOfFunctions = numberOfFunctionsu32.value; eatBytes(numberOfFunctionsu32.nextIndex); for (var i = 0; i < numbeOfFunctions; i++) { var indexu32 = readU32(); var index = indexu32.value; eatBytes(indexu32.nextIndex); var name = readUTF8String(); eatBytes(name.nextIndex); functionNames.push(t.functionNameMetadata(name.value, index)); } return functionNames; } function parseNameSectionLocals() { var localNames = []; var numbeOfFunctionsu32 = readU32(); var numbeOfFunctions = numbeOfFunctionsu32.value; eatBytes(numbeOfFunctionsu32.nextIndex); for (var i = 0; i < numbeOfFunctions; i++) { var functionIndexu32 = readU32(); var functionIndex = functionIndexu32.value; eatBytes(functionIndexu32.nextIndex); var numLocalsu32 = readU32(); var numLocals = numLocalsu32.value; eatBytes(numLocalsu32.nextIndex); for (var _i4 = 0; _i4 < numLocals; _i4++) { var localIndexu32 = readU32(); var localIndex = localIndexu32.value; eatBytes(localIndexu32.nextIndex); var name = readUTF8String(); eatBytes(name.nextIndex); localNames.push(t.localNameMetadata(name.value, localIndex, functionIndex)); } } return localNames; } // this is a custom section used for name resolution // https://github.com/WebAssembly/design/blob/master/BinaryEncoding.md#name-section function parseNameSection(remainingBytes) { var nameMetadata = []; var initialOffset = offset; while (offset - initialOffset < remainingBytes) { // name_type var sectionTypeByte = readVaruint7(); eatBytes(sectionTypeByte.nextIndex); // name_payload_len var subSectionSizeInBytesu32 = readVaruint32(); eatBytes(subSectionSizeInBytesu32.nextIndex); switch (sectionTypeByte.value) { // case 0: { // TODO(sven): re-enable that // Current status: it seems that when we decode the module's name // no name_payload_len is used. // // See https://github.com/WebAssembly/design/blob/master/BinaryEncoding.md#name-section // // nameMetadata.push(...parseNameModule()); // break; // } case 1: { nameMetadata.push.apply(nameMetadata, _toConsumableArray(parseNameSectionFunctions())); break; } case 2: { nameMetadata.push.apply(nameMetadata, _toConsumableArray(parseNameSectionLocals())); break; } default: { // skip unknown subsection eatBytes(subSectionSizeInBytesu32.value); } } } return nameMetadata; } // this is a custom section used for information about the producers // https://github.com/WebAssembly/tool-conventions/blob/master/ProducersSection.md function parseProducersSection() { var metadata = t.producersSectionMetadata([]); // field_count var sectionTypeByte = readVaruint32(); eatBytes(sectionTypeByte.nextIndex); dump([sectionTypeByte.value], "num of producers"); var fields = { language: [], "processed-by": [], sdk: [] }; // fields for (var fieldI = 0; fieldI < sectionTypeByte.value; fieldI++) { // field_name var fieldName = readUTF8String(); eatBytes(fieldName.nextIndex); // field_value_count var valueCount = readVaruint32(); eatBytes(valueCount.nextIndex); // field_values for (var producerI = 0; producerI < valueCount.value; producerI++) { var producerName = readUTF8String(); eatBytes(producerName.nextIndex); var producerVersion = readUTF8String(); eatBytes(producerVersion.nextIndex); fields[fieldName.value].push(t.producerMetadataVersionedName(producerName.value, producerVersion.value)); } metadata.producers.push(fields[fieldName.value]); } return metadata; } function parseGlobalSection(numberOfGlobals) { var globals = []; dump([numberOfGlobals], "num globals"); for (var i = 0; i < numberOfGlobals; i++) { var _startLoc11 = getPosition(); var globalType = parseGlobalType(); /** * Global expressions */ var init = []; parseInstructionBlock(init); var node = function () { var endLoc = getPosition(); return t.withLoc(t.global(globalType, init), endLoc, _startLoc11); }(); globals.push(node); state.globalsInModule.push(node); } return globals; } function parseElemSection(numberOfElements) { var elems = []; dump([numberOfElements], "num elements"); for (var i = 0; i < numberOfElements; i++) { var _startLoc12 = getPosition(); var tableindexu32 = readU32(); var tableindex = tableindexu32.value; eatBytes(tableindexu32.nextIndex); dump([tableindex], "table index"); /** * Parse instructions */ var instr = []; parseInstructionBlock(instr); /** * Parse ( vector function index ) * */ var indicesu32 = readU32(); var indices = indicesu32.value; eatBytes(indicesu32.nextIndex); dump([indices], "num indices"); var indexValues = []; for (var _i5 = 0; _i5 < indices; _i5++) { var indexu32 = readU32(); var index = indexu32.value; eatBytes(indexu32.nextIndex); dump([index], "index"); indexValues.push(t.indexLiteral(index)); } var elemNode = function () { var endLoc = getPosition(); return t.withLoc(t.elem(t.indexLiteral(tableindex), instr, indexValues), endLoc, _startLoc12); }(); elems.push(elemNode); } return elems; } // https://webassembly.github.io/spec/core/binary/types.html#memory-types function parseMemoryType(i) { var limits = parseLimits(); return t.memory(limits, t.indexLiteral(i)); } // https://webassembly.github.io/spec/binary/modules.html#table-section function parseTableSection(numberOfElements) { var tables = []; dump([numberOfElements], "num elements"); for (var i = 0; i < numberOfElements; i++) { var tablesNode = parseTableType(i); state.tablesInModule.push(tablesNode); tables.push(tablesNode); } return tables; } // https://webassembly.github.io/spec/binary/modules.html#memory-section function parseMemorySection(numberOfElements) { var memories = []; dump([numberOfElements], "num elements"); for (var i = 0; i < numberOfElements; i++) { var memoryNode = parseMemoryType(i); state.memoriesInModule.push(memoryNode); memories.push(memoryNode); } return memories; } // https://webassembly.github.io/spec/binary/modules.html#binary-startsec function parseStartSection() { var startLoc = getPosition(); var u32 = readU32(); var startFuncIndex = u32.value; eatBytes(u32.nextIndex); dump([startFuncIndex], "index"); return function () { var endLoc = getPosition(); return t.withLoc(t.start(t.indexLiteral(startFuncIndex)), endLoc, startLoc); }(); } // https://webassembly.github.io/spec/binary/modules.html#data-section function parseDataSection(numberOfElements) { var dataEntries = []; dump([numberOfElements], "num elements"); for (var i = 0; i < numberOfElements; i++) { var memoryIndexu32 = readU32(); var memoryIndex = memoryIndexu32.value; eatBytes(memoryIndexu32.nextIndex); dump([memoryIndex], "memory index"); var instrs = []; parseInstructionBlock(instrs); var hasExtraInstrs = instrs.filter(function (i) { return i.id !== "end"; }).length !== 1; if (hasExtraInstrs) { throw new _helperApiError.CompileError("data section offset must be a single instruction"); } var bytes = parseVec(function (b) { return b; }); dump([], "init"); dataEntries.push(t.data(t.memIndexLiteral(memoryIndex), instrs[0], t.byteArray(bytes))); } return dataEntries; } // https://webassembly.github.io/spec/binary/modules.html#binary-section function parseSection(sectionIndex) { var sectionId = readByte(); eatBytes(1); if (sectionId >= sectionIndex || sectionIndex === _helperWasmBytecode["default"].sections.custom) { sectionIndex = sectionId + 1; } else { if (sectionId !== _helperWasmBytecode["default"].sections.custom) throw new _helperApiError.CompileError("Unexpected section: " + toHex(sectionId)); } var nextSectionIndex = sectionIndex; var startOffset = offset; var startLoc = getPosition(); var u32 = readU32(); var sectionSizeInBytes = u32.value; eatBytes(u32.nextIndex); var sectionSizeInBytesNode = function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(sectionSizeInBytes), endLoc, startLoc); }(); switch (sectionId) { case _helperWasmBytecode["default"].sections.type: { dumpSep("section Type"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc13 = getPosition(); var _u = readU32(); var numberOfTypes = _u.value; eatBytes(_u.nextIndex); var metadata = t.sectionMetadata("type", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfTypes), endLoc, _startLoc13); }()); var nodes = parseTypeSection(numberOfTypes); return { nodes: nodes, metadata: metadata, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.table: { dumpSep("section Table"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc14 = getPosition(); var _u2 = readU32(); var numberOfTable = _u2.value; eatBytes(_u2.nextIndex); dump([numberOfTable], "num tables"); var _metadata = t.sectionMetadata("table", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfTable), endLoc, _startLoc14); }()); var _nodes = parseTableSection(numberOfTable); return { nodes: _nodes, metadata: _metadata, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections["import"]: { dumpSep("section Import"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc15 = getPosition(); var numberOfImportsu32 = readU32(); var numberOfImports = numberOfImportsu32.value; eatBytes(numberOfImportsu32.nextIndex); dump([numberOfImports], "number of imports"); var _metadata2 = t.sectionMetadata("import", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfImports), endLoc, _startLoc15); }()); var _nodes2 = parseImportSection(numberOfImports); return { nodes: _nodes2, metadata: _metadata2, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.func: { dumpSep("section Function"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc16 = getPosition(); var numberOfFunctionsu32 = readU32(); var numberOfFunctions = numberOfFunctionsu32.value; eatBytes(numberOfFunctionsu32.nextIndex); var _metadata3 = t.sectionMetadata("func", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfFunctions), endLoc, _startLoc16); }()); parseFuncSection(numberOfFunctions); var _nodes3 = []; return { nodes: _nodes3, metadata: _metadata3, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections["export"]: { dumpSep("section Export"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc17 = getPosition(); var _u3 = readU32(); var numberOfExport = _u3.value; eatBytes(_u3.nextIndex); var _metadata4 = t.sectionMetadata("export", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfExport), endLoc, _startLoc17); }()); parseExportSection(numberOfExport); var _nodes4 = []; return { nodes: _nodes4, metadata: _metadata4, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.code: { dumpSep("section Code"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc18 = getPosition(); var _u4 = readU32(); var numberOfFuncs = _u4.value; eatBytes(_u4.nextIndex); var _metadata5 = t.sectionMetadata("code", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfFuncs), endLoc, _startLoc18); }()); if (opts.ignoreCodeSection === true) { var remainingBytes = sectionSizeInBytes - _u4.nextIndex; eatBytes(remainingBytes); // eat the entire section } else { parseCodeSection(numberOfFuncs); } var _nodes5 = []; return { nodes: _nodes5, metadata: _metadata5, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.start: { dumpSep("section Start"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _metadata6 = t.sectionMetadata("start", startOffset, sectionSizeInBytesNode); var _nodes6 = [parseStartSection()]; return { nodes: _nodes6, metadata: _metadata6, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.element: { dumpSep("section Element"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc19 = getPosition(); var numberOfElementsu32 = readU32(); var numberOfElements = numberOfElementsu32.value; eatBytes(numberOfElementsu32.nextIndex); var _metadata7 = t.sectionMetadata("element", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfElements), endLoc, _startLoc19); }()); var _nodes7 = parseElemSection(numberOfElements); return { nodes: _nodes7, metadata: _metadata7, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.global: { dumpSep("section Global"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc20 = getPosition(); var numberOfGlobalsu32 = readU32(); var numberOfGlobals = numberOfGlobalsu32.value; eatBytes(numberOfGlobalsu32.nextIndex); var _metadata8 = t.sectionMetadata("global", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(numberOfGlobals), endLoc, _startLoc20); }()); var _nodes8 = parseGlobalSection(numberOfGlobals); return { nodes: _nodes8, metadata: _metadata8, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.memory: { dumpSep("section Memory"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _startLoc21 = getPosition(); var _numberOfElementsu = readU32(); var _numberOfElements = _numberOfElementsu.value; eatBytes(_numberOfElementsu.nextIndex); var _metadata9 = t.sectionMetadata("memory", startOffset, sectionSizeInBytesNode, function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(_numberOfElements), endLoc, _startLoc21); }()); var _nodes9 = parseMemorySection(_numberOfElements); return { nodes: _nodes9, metadata: _metadata9, nextSectionIndex: nextSectionIndex }; } case _helperWasmBytecode["default"].sections.data: { dumpSep("section Data"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _metadata10 = t.sectionMetadata("data", startOffset, sectionSizeInBytesNode); var _startLoc22 = getPosition(); var _numberOfElementsu2 = readU32(); var _numberOfElements2 = _numberOfElementsu2.value; eatBytes(_numberOfElementsu2.nextIndex); _metadata10.vectorOfSize = function () { var endLoc = getPosition(); return t.withLoc(t.numberLiteralFromRaw(_numberOfElements2), endLoc, _startLoc22); }(); if (opts.ignoreDataSection === true) { var _remainingBytes = sectionSizeInBytes - _numberOfElementsu2.nextIndex; eatBytes(_remainingBytes); // eat the entire section dumpSep("ignore data (" + sectionSizeInBytes + " bytes)"); return { nodes: [], metadata: _metadata10, nextSectionIndex: nextSectionIndex }; } else { var _nodes10 = parseDataSection(_numberOfElements2); return { nodes: _nodes10, metadata: _metadata10, nextSectionIndex: nextSectionIndex }; } } case _helperWasmBytecode["default"].sections.custom: { dumpSep("section Custom"); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); var _metadata11 = [t.sectionMetadata("custom", startOffset, sectionSizeInBytesNode)]; var sectionName = readUTF8String(); eatBytes(sectionName.nextIndex); dump([], "section name (".concat(sectionName.value, ")")); var _remainingBytes2 = sectionSizeInBytes - sectionName.nextIndex; if (sectionName.value === "name") { var initialOffset = offset; try { _metadata11.push.apply(_metadata11, _toConsumableArray(parseNameSection(_remainingBytes2))); } catch (e) { console.warn("Failed to decode custom \"name\" section @".concat(offset, "; ignoring (").concat(e.message, ").")); eatBytes(offset - (initialOffset + _remainingBytes2)); } } else if (sectionName.value === "producers") { var _initialOffset = offset; try { _metadata11.push(parseProducersSection()); } catch (e) { console.warn("Failed to decode custom \"producers\" section @".concat(offset, "; ignoring (").concat(e.message, ").")); eatBytes(offset - (_initialOffset + _remainingBytes2)); } } else { // We don't parse the custom section eatBytes(_remainingBytes2); dumpSep("ignore custom " + JSON.stringify(sectionName.value) + " section (" + _remainingBytes2 + " bytes)"); } return { nodes: [], metadata: _metadata11, nextSectionIndex: nextSectionIndex }; } } if (opts.errorOnUnknownSection) { throw new _helperApiError.CompileError("Unexpected section: " + toHex(sectionId)); } else { dumpSep("section " + toHex(sectionId)); dump([sectionId], "section code"); dump([sectionSizeInBytes], "section size"); eatBytes(sectionSizeInBytes); dumpSep("ignoring (" + sectionSizeInBytes + " bytes)"); return { nodes: [], metadata: [], nextSectionIndex: 0 }; } } parseModuleHeader(); parseVersion(); var moduleFields = []; var sectionIndex = 0; var moduleMetadata = { sections: [], functionNames: [], localNames: [], producers: [] }; /** * All the generate declaration are going to be stored in our state */ while (offset < buf.length) { var _parseSection = parseSection(sectionIndex), nodes = _parseSection.nodes, metadata = _parseSection.metadata, nextSectionIndex = _parseSection.nextSectionIndex; moduleFields.push.apply(moduleFields, _toConsumableArray(nodes)); var metadataArray = Array.isArray(metadata) ? metadata : [metadata]; metadataArray.forEach(function (metadataItem) { // $FlowIgnore if (metadataItem.type === "FunctionNameMetadata") { moduleMetadata.functionNames.push(metadataItem); // $FlowIgnore } else if (metadataItem.type === "LocalNameMetadata") { moduleMetadata.localNames.push(metadataItem); // $FlowIgnore } else if (metadataItem.type === "ProducersSectionMetadata") { moduleMetadata.producers.push(metadataItem); } else { moduleMetadata.sections.push(metadataItem); } }); // Ignore custom section if (nextSectionIndex) { sectionIndex = nextSectionIndex; } } /** * Transform the state into AST nodes */ var funcIndex = 0; state.functionsInModule.forEach(function (func) { var params = func.signature.params; var result = func.signature.result; var body = []; // External functions doesn't provide any code, can skip it here if (func.isExternal === true) { return; } var decodedElementInCodeSection = state.elementsInCodeSection[funcIndex]; if (opts.ignoreCodeSection === false) { if (typeof decodedElementInCodeSection === "undefined") { throw new _helperApiError.CompileError("func " + toHex(funcIndex) + " code not found"); } body = decodedElementInCodeSection.code; } funcIndex++; var funcNode = t.func(func.id, t.signature(params, result), body); if (func.isExternal === true) { funcNode.isExternal = func.isExternal; } // Add function position in the binary if possible if (opts.ignoreCodeSection === false) { var _startLoc23 = decodedElementInCodeSection.startLoc, endLoc = decodedElementInCodeSection.endLoc, bodySize = decodedElementInCodeSection.bodySize; funcNode = t.withLoc(funcNode, endLoc, _startLoc23); funcNode.metadata = { bodySize: bodySize }; } moduleFields.push(funcNode); }); state.elementsInExportSection.forEach(function (moduleExport) { /** * If the export has no id, we won't be able to call it from the outside * so we can omit it */ if (moduleExport.id != null) { moduleFields.push(t.withLoc(t.moduleExport(moduleExport.name, t.moduleExportDescr(moduleExport.type, moduleExport.id)), moduleExport.endLoc, moduleExport.startLoc)); } }); dumpSep("end of program"); var module = t.module(null, moduleFields, t.moduleMetadata(moduleMetadata.sections, moduleMetadata.functionNames, moduleMetadata.localNames, moduleMetadata.producers)); return t.program([module]); }