diff options
Diffstat (limited to 'node_modules/@webassemblyjs/wasm-parser')
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/LICENSE | 21 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/README.md | 26 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/esm/decoder.js | 1621 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/esm/index.js | 238 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/esm/types/decoder.js | 0 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/lib/decoder.js | 1637 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/lib/index.js | 249 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/lib/types/decoder.js | 0 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/package.json | 43 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-parser/webassemblyjs-wasm-parser-1.7.10.tgz | bin | 0 -> 21780 bytes |
10 files changed, 3835 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/wasm-parser/LICENSE b/node_modules/@webassemblyjs/wasm-parser/LICENSE new file mode 100644 index 00000000..87e7e1ff --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2018 Sven Sauleau <sven@sauleau.com> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/@webassemblyjs/wasm-parser/README.md b/node_modules/@webassemblyjs/wasm-parser/README.md new file mode 100644 index 00000000..19058d72 --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/README.md @@ -0,0 +1,26 @@ +# @webassemblyjs/wasm-parser + +> WebAssembly binary format parser + +## Installation + +```sh +yarn add @webassemblyjs/wasm-parser +``` + +## Usage + +```js +import { decode } from "@webassemblyjs/wasm-parser"; + +const decoderOpts = {}; + +const ast = decode(binary, decoderOpts); +``` + +### Decoder options + +- `dump`: print dump information while decoding (default `false`) +- `ignoreCodeSection`: ignore the code section (default `false`) +- `ignoreDataSection`: ignore the data section (default `false`) + diff --git a/node_modules/@webassemblyjs/wasm-parser/esm/decoder.js b/node_modules/@webassemblyjs/wasm-parser/esm/decoder.js new file mode 100644 index 00000000..683bc59b --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/esm/decoder.js @@ -0,0 +1,1621 @@ +function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } + +import { CompileError } from "@webassemblyjs/helper-api-error"; +import * as ieee754 from "@webassemblyjs/ieee754"; +import * as utf8 from "@webassemblyjs/utf8"; +import * as t from "@webassemblyjs/ast"; +import { decodeInt32, decodeUInt32, MAX_NUMBER_OF_BYTE_U32, decodeInt64, decodeUInt64, MAX_NUMBER_OF_BYTE_U64 } from "@webassemblyjs/leb128"; +import constants from "@webassemblyjs/helper-wasm-bytecode"; + +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; +} + +export 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(MAX_NUMBER_OF_BYTE_U32); + var buffer = Buffer.from(bytes); + return decodeUInt32(buffer); + } + + function readVaruint32() { + // where 32 bits = max 4 bytes + var bytes = readBytes(4); + var buffer = Buffer.from(bytes); + return decodeUInt32(buffer); + } + + function readVaruint7() { + // where 7 bits = max 1 bytes + var bytes = readBytes(1); + var buffer = Buffer.from(bytes); + return decodeUInt32(buffer); + } + /** + * Decode a signed 32bits interger + */ + + + function read32() { + var bytes = readBytes(MAX_NUMBER_OF_BYTE_U32); + var buffer = Buffer.from(bytes); + return decodeInt32(buffer); + } + /** + * Decode a signed 64bits integer + */ + + + function read64() { + var bytes = readBytes(MAX_NUMBER_OF_BYTE_U64); + var buffer = Buffer.from(bytes); + return decodeInt64(buffer); + } + + function readU64() { + var bytes = readBytes(MAX_NUMBER_OF_BYTE_U64); + var buffer = Buffer.from(bytes); + return 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(constants.magicModuleHeader, header) === false) { + throw new 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(constants.moduleVersion, version) === false) { + throw new 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 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 == constants.types.func) { + dump([type], "func"); + var paramValtypes = parseVec(function (b) { + return constants.valtypes[b]; + }); + var params = paramValtypes.map(function (v) { + return t.funcParam( + /*valtype*/ + v); + }); + var result = parseVec(function (b) { + return constants.valtypes[b]; + }); + var endLoc = getPosition(); + typeInstructionNodes.push(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 startLoc = 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 = constants.importTypes[descrTypeByte]; + dump([descrTypeByte], "import kind"); + + if (typeof descrType === "undefined") { + throw new 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 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 === "mem") { + var memoryNode = parseMemoryType(0); + state.memoriesInModule.push(memoryNode); + importDescr = memoryNode; + } else { + throw new CompileError("Unsupported import of type: " + descrType); + } + + var endLoc = getPosition(); + imports.push(t.withLoc(t.moduleImport(moduleName.value, name.value, importDescr), endLoc, startLoc)); + } + + 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 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 startLoc = 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 (constants.exportTypes[typeIndex] === "Func") { + var func = state.functionsInModule[index]; + + if (typeof func === "undefined") { + throw new CompileError("entry not found at index ".concat(index, " in function section")); + } + + id = t.numberLiteralFromRaw(index, String(index)); + signature = func.signature; + } else if (constants.exportTypes[typeIndex] === "Table") { + var table = state.tablesInModule[index]; + + if (typeof table === "undefined") { + throw new CompileError("entry not found at index ".concat(index, " in table section")); + } + + id = t.numberLiteralFromRaw(index, String(index)); + signature = null; + } else if (constants.exportTypes[typeIndex] === "Mem") { + var memNode = state.memoriesInModule[index]; + + if (typeof memNode === "undefined") { + throw new CompileError("entry not found at index ".concat(index, " in memory section")); + } + + id = t.numberLiteralFromRaw(index, String(index)); + signature = null; + } else if (constants.exportTypes[typeIndex] === "Global") { + var global = state.globalsInModule[index]; + + if (typeof global === "undefined") { + throw new CompileError("entry not found at index ".concat(index, " in global section")); + } + + 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: constants.exportTypes[typeIndex], + signature: signature, + id: id, + index: index, + endLoc: endLoc, + startLoc: startLoc + }); + } + } // 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 startLoc = 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 localCountU32 = readU32(); + var localCount = localCountU32.value; + eatBytes(localCountU32.nextIndex); + dump([localCount], "num local"); + var valtypeByte = readByte(); + eatBytes(1); + var type = constants.valtypes[valtypeByte]; + locals.push(type); + dump([valtypeByte], type); + + if (typeof type === "undefined") { + throw new CompileError("Unexpected valtype: " + toHex(valtypeByte)); + } + } // Decode instructions until the end + + + parseInstructionBlock(code); + code.unshift.apply(code, _toConsumableArray(locals.map(function (l) { + return t.instruction("local", [t.valtypeLiteral(l)]); + }))); + var endLoc = getPosition(); + state.elementsInCodeSection.push({ + code: code, + locals: locals, + endLoc: endLoc, + startLoc: startLoc, + bodySize: bodySizeU32.value + }); + } + } + + function parseInstructionBlock(code) { + while (true) { + var startLoc = getPosition(); + var instructionAlreadyCreated = false; + var instructionByte = readByte(); + eatBytes(1); + + if (instructionByte === 0xfe) { + throw new CompileError("Atomic instructions are not implemented"); + } + + var instruction = constants.symbolsByByte[instructionByte]; + + if (typeof instruction === "undefined") { + throw new 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") { + break; + } + + var args = []; + + if (instruction.name === "loop") { + var blocktypeByte = readByte(); + eatBytes(1); + var blocktype = constants.blockTypes[blocktypeByte]; + dump([blocktypeByte], "blocktype"); + + if (typeof blocktype === "undefined") { + throw new CompileError("Unexpected blocktype: " + toHex(blocktypeByte)); + } + + var instr = []; + parseInstructionBlock(instr); // preserve anonymous + + var label = t.withRaw(t.identifier(getUniqueName("loop")), ""); + var loopNode = t.loopInstruction(label, blocktype, instr); + code.push(loopNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "if") { + var _blocktypeByte = readByte(); + + eatBytes(1); + var _blocktype = constants.blockTypes[_blocktypeByte]; + dump([_blocktypeByte], "blocktype"); + + if (typeof _blocktype === "undefined") { + throw new 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 = t.ifInstruction(testIndex, testInstrs, _blocktype, consequentInstr, alternate); + code.push(ifNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "block") { + var _blocktypeByte2 = readByte(); + + eatBytes(1); + var _blocktype2 = constants.blockTypes[_blocktypeByte2]; + dump([_blocktypeByte2], "blocktype"); + + if (typeof _blocktype2 === "undefined") { + throw new CompileError("Unexpected blocktype: " + toHex(_blocktypeByte2)); + } + + var _instr2 = []; + parseInstructionBlock(_instr2); // preserve anonymous + + var _label = t.withRaw(t.identifier(getUniqueName("block")), ""); + + var blockNode = t.blockInstruction(_label, _instr2, _blocktype2); + 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 = t.callInstruction(t.indexLiteral(index)); + code.push(callNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "call_indirect") { + 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 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 CompileError("zero flag expected"); + } + + code.push(_callNode); + 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"); + } + } 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 _node = { + type: "LongNumberLiteral", + value: { + high: _high, + low: _low + } + }; + args.push(_node); + } + + 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 { + for (var _i2 = 0; _i2 < instruction.numberOfArgs; _i2++) { + var u32 = readU32(); + eatBytes(u32.nextIndex); + dump([u32.value], "argument " + _i2); + args.push(t.numberLiteralFromRaw(u32.value)); + } + } + + if (instructionAlreadyCreated === false) { + if (typeof instruction.object === "string") { + code.push(t.objectInstruction(instruction.name, instruction.object, args)); + } else { + var endLoc = getPosition(); + + var _node2 = t.withLoc(t.instruction(instruction.name, args), endLoc, startLoc); + + code.push(_node2); + } + } + } + } // https://webassembly.github.io/spec/core/binary/types.html#limits + + + function parseLimits() { + var limitType = readByte(); + eatBytes(1); + dump([limitType], "limit type"); + 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); + } // 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 = constants.tableTypes[elementTypeByte]; + + if (typeof elementType === "undefined") { + throw new 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 = constants.valtypes[valtypeByte]; + dump([valtypeByte], type); + + if (typeof type === "undefined") { + throw new CompileError("Unknown valtype: " + toHex(valtypeByte)); + } + + var globalTypeByte = readByte(); + eatBytes(1); + var globalType = constants.globalTypes[globalTypeByte]; + dump([globalTypeByte], "global type (".concat(globalType, ")")); + + if (typeof globalType === "undefined") { + throw new 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 _i3 = 0; _i3 < numLocals; _i3++) { + 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; + } + + function parseGlobalSection(numberOfGlobals) { + var globals = []; + dump([numberOfGlobals], "num globals"); + + for (var i = 0; i < numberOfGlobals; i++) { + var startLoc = getPosition(); + var globalType = parseGlobalType(); + /** + * Global expressions + */ + + var init = []; + parseInstructionBlock(init); + var endLoc = getPosition(); + var node = t.withLoc(t.global(globalType, init), endLoc, startLoc); + 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 startLoc = 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 _i4 = 0; _i4 < indices; _i4++) { + var indexu32 = readU32(); + var index = indexu32.value; + eatBytes(indexu32.nextIndex); + dump([index], "index"); + indexValues.push(t.indexLiteral(index)); + } + + var endLoc = getPosition(); + var elemNode = t.withLoc(t.elem(t.indexLiteral(tableindex), instr, indexValues), endLoc, startLoc); + 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"); + 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); + + if (instrs.length !== 1) { + throw new 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 === constants.sections.custom) { + sectionIndex = sectionId + 1; + } else { + if (sectionId !== constants.sections.custom) throw new CompileError("Unexpected section: " + toHex(sectionId)); + } + + var nextSectionIndex = sectionIndex; + var startOffset = offset; + var startPosition = getPosition(); + var u32 = readU32(); + var sectionSizeInBytes = u32.value; + eatBytes(u32.nextIndex); + var sectionSizeInBytesEndLoc = getPosition(); + var sectionSizeInBytesNode = t.withLoc(t.numberLiteralFromRaw(sectionSizeInBytes), sectionSizeInBytesEndLoc, startPosition); + + switch (sectionId) { + case constants.sections.type: + { + dumpSep("section Type"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition = getPosition(); + + var _u = readU32(); + + var numberOfTypes = _u.value; + eatBytes(_u.nextIndex); + var endPosition = getPosition(); + + var _metadata = t.sectionMetadata("type", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfTypes), endPosition, _startPosition)); + + var _nodes = parseTypeSection(numberOfTypes); + + return { + nodes: _nodes, + metadata: _metadata, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.table: + { + dumpSep("section Table"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition2 = getPosition(); + + var _u2 = readU32(); + + var numberOfTable = _u2.value; + eatBytes(_u2.nextIndex); + + var _endPosition = getPosition(); + + dump([numberOfTable], "num tables"); + + var _metadata2 = t.sectionMetadata("table", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfTable), _endPosition, _startPosition2)); + + var _nodes2 = parseTableSection(numberOfTable); + + return { + nodes: _nodes2, + metadata: _metadata2, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.import: + { + dumpSep("section Import"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition3 = getPosition(); + + var numberOfImportsu32 = readU32(); + var numberOfImports = numberOfImportsu32.value; + eatBytes(numberOfImportsu32.nextIndex); + + var _endPosition2 = getPosition(); + + dump([numberOfImports], "number of imports"); + + var _metadata3 = t.sectionMetadata("import", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfImports), _endPosition2, _startPosition3)); + + var _nodes3 = parseImportSection(numberOfImports); + + return { + nodes: _nodes3, + metadata: _metadata3, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.func: + { + dumpSep("section Function"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition4 = getPosition(); + + var numberOfFunctionsu32 = readU32(); + var numberOfFunctions = numberOfFunctionsu32.value; + eatBytes(numberOfFunctionsu32.nextIndex); + + var _endPosition3 = getPosition(); + + var _metadata4 = t.sectionMetadata("func", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfFunctions), _endPosition3, _startPosition4)); + + parseFuncSection(numberOfFunctions); + var _nodes4 = []; + return { + nodes: _nodes4, + metadata: _metadata4, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.export: + { + dumpSep("section Export"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition5 = getPosition(); + + var _u3 = readU32(); + + var numberOfExport = _u3.value; + eatBytes(_u3.nextIndex); + + var _endPosition4 = getPosition(); + + var _metadata5 = t.sectionMetadata("export", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfExport), _endPosition4, _startPosition5)); + + parseExportSection(numberOfExport); + var _nodes5 = []; + return { + nodes: _nodes5, + metadata: _metadata5, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.code: + { + dumpSep("section Code"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition6 = getPosition(); + + var _u4 = readU32(); + + var numberOfFuncs = _u4.value; + eatBytes(_u4.nextIndex); + + var _endPosition5 = getPosition(); + + var _metadata6 = t.sectionMetadata("code", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfFuncs), _endPosition5, _startPosition6)); + + if (opts.ignoreCodeSection === true) { + var remainingBytes = sectionSizeInBytes - _u4.nextIndex; + eatBytes(remainingBytes); // eat the entire section + } else { + parseCodeSection(numberOfFuncs); + } + + var _nodes6 = []; + return { + nodes: _nodes6, + metadata: _metadata6, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.start: + { + dumpSep("section Start"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _metadata7 = t.sectionMetadata("start", startOffset, sectionSizeInBytesNode); + + var _nodes7 = [parseStartSection()]; + return { + nodes: _nodes7, + metadata: _metadata7, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.element: + { + dumpSep("section Element"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition7 = getPosition(); + + var numberOfElementsu32 = readU32(); + var numberOfElements = numberOfElementsu32.value; + eatBytes(numberOfElementsu32.nextIndex); + + var _endPosition6 = getPosition(); + + var _metadata8 = t.sectionMetadata("element", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfElements), _endPosition6, _startPosition7)); + + var _nodes8 = parseElemSection(numberOfElements); + + return { + nodes: _nodes8, + metadata: _metadata8, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.global: + { + dumpSep("section Global"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition8 = getPosition(); + + var numberOfGlobalsu32 = readU32(); + var numberOfGlobals = numberOfGlobalsu32.value; + eatBytes(numberOfGlobalsu32.nextIndex); + + var _endPosition7 = getPosition(); + + var _metadata9 = t.sectionMetadata("global", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfGlobals), _endPosition7, _startPosition8)); + + var _nodes9 = parseGlobalSection(numberOfGlobals); + + return { + nodes: _nodes9, + metadata: _metadata9, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.memory: + { + dumpSep("section Memory"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition9 = getPosition(); + + var _numberOfElementsu = readU32(); + + var _numberOfElements = _numberOfElementsu.value; + eatBytes(_numberOfElementsu.nextIndex); + + var _endPosition8 = getPosition(); + + var _metadata10 = t.sectionMetadata("memory", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(_numberOfElements), _endPosition8, _startPosition9)); + + var _nodes10 = parseMemorySection(_numberOfElements); + + return { + nodes: _nodes10, + metadata: _metadata10, + nextSectionIndex: nextSectionIndex + }; + } + + case constants.sections.data: + { + dumpSep("section Data"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _metadata11 = t.sectionMetadata("data", startOffset, sectionSizeInBytesNode); + + var _startPosition10 = getPosition(); + + var _numberOfElementsu2 = readU32(); + + var _numberOfElements2 = _numberOfElementsu2.value; + eatBytes(_numberOfElementsu2.nextIndex); + + var _endPosition9 = getPosition(); + + _metadata11.vectorOfSize = t.withLoc(t.numberLiteralFromRaw(_numberOfElements2), _endPosition9, _startPosition10); + + if (opts.ignoreDataSection === true) { + var _remainingBytes = sectionSizeInBytes - _numberOfElementsu2.nextIndex; + + eatBytes(_remainingBytes); // eat the entire section + + dumpSep("ignore data (" + sectionSizeInBytes + " bytes)"); + return { + nodes: [], + metadata: _metadata11, + nextSectionIndex: nextSectionIndex + }; + } else { + var _nodes11 = parseDataSection(_numberOfElements2); + + return { + nodes: _nodes11, + metadata: _metadata11, + nextSectionIndex: nextSectionIndex + }; + } + } + + case constants.sections.custom: + { + dumpSep("section Custom"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + var _metadata12 = [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") { + try { + _metadata12.push.apply(_metadata12, _toConsumableArray(parseNameSection(_remainingBytes2))); + } catch (e) { + console.warn("Failed to decode custom \"name\" section @".concat(offset, "; ignoring (").concat(e.message, ").")); + eatBytes(_remainingBytes2); + } + } else { + // We don't parse the custom section + eatBytes(_remainingBytes2); + dumpSep("ignore custom " + JSON.stringify(sectionName.value) + " section (" + _remainingBytes2 + " bytes)"); + } + + return { + nodes: [], + metadata: _metadata12, + nextSectionIndex: nextSectionIndex + }; + } + } + + throw new CompileError("Unexpected section: " + toHex(sectionId)); + } + + parseModuleHeader(); + parseVersion(); + var moduleFields = []; + var sectionIndex = 0; + var moduleMetadata = { + sections: [], + functionNames: [], + localNames: [] + }; + /** + * All the generate declaration are going to be stored in our state + */ + + while (offset < buf.length) { + var _parseSection = parseSection(sectionIndex), + _nodes12 = _parseSection.nodes, + _metadata13 = _parseSection.metadata, + nextSectionIndex = _parseSection.nextSectionIndex; + + moduleFields.push.apply(moduleFields, _toConsumableArray(_nodes12)); + var metadataArray = Array.isArray(_metadata13) ? _metadata13 : [_metadata13]; + metadataArray.forEach(function (metadataItem) { + if (metadataItem.type === "FunctionNameMetadata") { + moduleMetadata.functionNames.push(metadataItem); + } else if (metadataItem.type === "LocalNameMetadata") { + moduleMetadata.localNames.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 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 startLoc = decodedElementInCodeSection.startLoc, + endLoc = decodedElementInCodeSection.endLoc, + bodySize = decodedElementInCodeSection.bodySize; + funcNode = t.withLoc(funcNode, endLoc, startLoc); + 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)); + return t.program([module]); +}
\ No newline at end of file diff --git a/node_modules/@webassemblyjs/wasm-parser/esm/index.js b/node_modules/@webassemblyjs/wasm-parser/esm/index.js new file mode 100644 index 00000000..3828639f --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/esm/index.js @@ -0,0 +1,238 @@ +import * as decoder from "./decoder"; +import * as t from "@webassemblyjs/ast"; +var defaultDecoderOpts = { + dump: false, + ignoreCodeSection: false, + ignoreDataSection: false, + ignoreCustomNameSection: false +}; // traverses the AST, locating function name metadata, which is then +// used to update index-based identifiers with function names + +function restoreFunctionNames(ast) { + var functionNames = []; + t.traverse(ast, { + FunctionNameMetadata: function FunctionNameMetadata(_ref) { + var node = _ref.node; + functionNames.push({ + name: node.value, + index: node.index + }); + } + }); + + if (functionNames.length === 0) { + return; + } + + t.traverse(ast, { + Func: function (_Func) { + function Func(_x) { + return _Func.apply(this, arguments); + } + + Func.toString = function () { + return _Func.toString(); + }; + + return Func; + }(function (_ref2) { + var node = _ref2.node; + // $FlowIgnore + var nodeName = node.name; + var indexBasedFunctionName = nodeName.value; + var index = Number(indexBasedFunctionName.replace("func_", "")); + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + nodeName.value = functionName.name; // $FlowIgnore + + delete nodeName.raw; + } + }), + // Also update the reference in the export + ModuleExport: function (_ModuleExport) { + function ModuleExport(_x2) { + return _ModuleExport.apply(this, arguments); + } + + ModuleExport.toString = function () { + return _ModuleExport.toString(); + }; + + return ModuleExport; + }(function (_ref3) { + var node = _ref3.node; + + if (node.descr.exportType === "Func") { + // $FlowIgnore + var nodeName = node.descr.id; + var index = nodeName.value; + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + node.descr.id = t.identifier(functionName.name); + } + } + }), + ModuleImport: function (_ModuleImport) { + function ModuleImport(_x3) { + return _ModuleImport.apply(this, arguments); + } + + ModuleImport.toString = function () { + return _ModuleImport.toString(); + }; + + return ModuleImport; + }(function (_ref4) { + var node = _ref4.node; + + if (node.descr.type === "FuncImportDescr") { + // $FlowIgnore + var indexBasedFunctionName = node.descr.id; + var index = Number(indexBasedFunctionName.replace("func_", "")); + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + // $FlowIgnore + node.descr.id = t.identifier(functionName.name); + } + } + }), + CallInstruction: function (_CallInstruction) { + function CallInstruction(_x4) { + return _CallInstruction.apply(this, arguments); + } + + CallInstruction.toString = function () { + return _CallInstruction.toString(); + }; + + return CallInstruction; + }(function (nodePath) { + var node = nodePath.node; + var index = node.index.value; + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + node.index = t.identifier(functionName.name); // $FlowIgnore + + delete node.raw; + } + }) + }); +} + +function restoreLocalNames(ast) { + var localNames = []; + t.traverse(ast, { + LocalNameMetadata: function LocalNameMetadata(_ref5) { + var node = _ref5.node; + localNames.push({ + name: node.value, + localIndex: node.localIndex, + functionIndex: node.functionIndex + }); + } + }); + + if (localNames.length === 0) { + return; + } + + t.traverse(ast, { + Func: function (_Func2) { + function Func(_x5) { + return _Func2.apply(this, arguments); + } + + Func.toString = function () { + return _Func2.toString(); + }; + + return Func; + }(function (_ref6) { + var node = _ref6.node; + var signature = node.signature; + + if (signature.type !== "Signature") { + return; + } // $FlowIgnore + + + var nodeName = node.name; + var indexBasedFunctionName = nodeName.value; + var functionIndex = Number(indexBasedFunctionName.replace("func_", "")); + signature.params.forEach(function (param, paramIndex) { + var paramName = localNames.find(function (f) { + return f.localIndex === paramIndex && f.functionIndex === functionIndex; + }); + + if (paramName && paramName.name !== "") { + param.id = paramName.name; + } + }); + }) + }); +} + +function restoreModuleName(ast) { + t.traverse(ast, { + ModuleNameMetadata: function (_ModuleNameMetadata) { + function ModuleNameMetadata(_x6) { + return _ModuleNameMetadata.apply(this, arguments); + } + + ModuleNameMetadata.toString = function () { + return _ModuleNameMetadata.toString(); + }; + + return ModuleNameMetadata; + }(function (moduleNameMetadataPath) { + // update module + t.traverse(ast, { + Module: function (_Module) { + function Module(_x7) { + return _Module.apply(this, arguments); + } + + Module.toString = function () { + return _Module.toString(); + }; + + return Module; + }(function (_ref7) { + var node = _ref7.node; + var name = moduleNameMetadataPath.node.value; // compatiblity with wast-parser + + if (name === "") { + name = null; + } + + node.id = name; + }) + }); + }) + }); +} + +export function decode(buf, customOpts) { + var opts = Object.assign({}, defaultDecoderOpts, customOpts); + var ast = decoder.decode(buf, opts); + + if (opts.ignoreCustomNameSection === false) { + restoreFunctionNames(ast); + restoreLocalNames(ast); + restoreModuleName(ast); + } + + return ast; +}
\ No newline at end of file diff --git a/node_modules/@webassemblyjs/wasm-parser/esm/types/decoder.js b/node_modules/@webassemblyjs/wasm-parser/esm/types/decoder.js new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/esm/types/decoder.js diff --git a/node_modules/@webassemblyjs/wasm-parser/lib/decoder.js b/node_modules/@webassemblyjs/wasm-parser/lib/decoder.js new file mode 100644 index 00000000..468eebad --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/lib/decoder.js @@ -0,0 +1,1637 @@ +"use strict"; + +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 _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } } + +function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } } + +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]; + }); + var endLoc = getPosition(); + typeInstructionNodes.push(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 startLoc = 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 === "mem") { + var memoryNode = parseMemoryType(0); + state.memoriesInModule.push(memoryNode); + importDescr = memoryNode; + } else { + throw new _helperApiError.CompileError("Unsupported import of type: " + descrType); + } + + var endLoc = getPosition(); + imports.push(t.withLoc(t.moduleImport(moduleName.value, name.value, importDescr), endLoc, startLoc)); + } + + 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 startLoc = 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("entry not found at index ".concat(index, " in function section")); + } + + 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("entry not found at index ".concat(index, " in table section")); + } + + id = t.numberLiteralFromRaw(index, String(index)); + signature = null; + } else if (_helperWasmBytecode.default.exportTypes[typeIndex] === "Mem") { + var memNode = state.memoriesInModule[index]; + + if (typeof memNode === "undefined") { + throw new _helperApiError.CompileError("entry not found at index ".concat(index, " in memory section")); + } + + 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("entry not found at index ".concat(index, " in global section")); + } + + 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: startLoc + }); + } + } // 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 startLoc = 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 localCountU32 = readU32(); + var localCount = localCountU32.value; + eatBytes(localCountU32.nextIndex); + dump([localCount], "num local"); + var valtypeByte = readByte(); + eatBytes(1); + var type = _helperWasmBytecode.default.valtypes[valtypeByte]; + locals.push(type); + dump([valtypeByte], type); + + if (typeof type === "undefined") { + throw new _helperApiError.CompileError("Unexpected valtype: " + toHex(valtypeByte)); + } + } // Decode instructions until the end + + + parseInstructionBlock(code); + code.unshift.apply(code, _toConsumableArray(locals.map(function (l) { + return t.instruction("local", [t.valtypeLiteral(l)]); + }))); + var endLoc = getPosition(); + state.elementsInCodeSection.push({ + code: code, + locals: locals, + endLoc: endLoc, + startLoc: startLoc, + bodySize: bodySizeU32.value + }); + } + } + + function parseInstructionBlock(code) { + while (true) { + var startLoc = getPosition(); + var instructionAlreadyCreated = false; + var instructionByte = readByte(); + eatBytes(1); + + if (instructionByte === 0xfe) { + throw new _helperApiError.CompileError("Atomic instructions are not implemented"); + } + + 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") { + break; + } + + var args = []; + + if (instruction.name === "loop") { + 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 = t.loopInstruction(label, blocktype, instr); + code.push(loopNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "if") { + 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 = t.ifInstruction(testIndex, testInstrs, _blocktype, consequentInstr, alternate); + code.push(ifNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "block") { + 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 = t.blockInstruction(_label, _instr2, _blocktype2); + 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 = t.callInstruction(t.indexLiteral(index)); + code.push(callNode); + instructionAlreadyCreated = true; + } else if (instruction.name === "call_indirect") { + 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(_callNode); + 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"); + } + } 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 _node = { + type: "LongNumberLiteral", + value: { + high: _high, + low: _low + } + }; + args.push(_node); + } + + 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 { + for (var _i2 = 0; _i2 < instruction.numberOfArgs; _i2++) { + var u32 = readU32(); + eatBytes(u32.nextIndex); + dump([u32.value], "argument " + _i2); + args.push(t.numberLiteralFromRaw(u32.value)); + } + } + + if (instructionAlreadyCreated === false) { + if (typeof instruction.object === "string") { + code.push(t.objectInstruction(instruction.name, instruction.object, args)); + } else { + var endLoc = getPosition(); + + var _node2 = t.withLoc(t.instruction(instruction.name, args), endLoc, startLoc); + + code.push(_node2); + } + } + } + } // https://webassembly.github.io/spec/core/binary/types.html#limits + + + function parseLimits() { + var limitType = readByte(); + eatBytes(1); + dump([limitType], "limit type"); + 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); + } // 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 _i3 = 0; _i3 < numLocals; _i3++) { + 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; + } + + function parseGlobalSection(numberOfGlobals) { + var globals = []; + dump([numberOfGlobals], "num globals"); + + for (var i = 0; i < numberOfGlobals; i++) { + var startLoc = getPosition(); + var globalType = parseGlobalType(); + /** + * Global expressions + */ + + var init = []; + parseInstructionBlock(init); + var endLoc = getPosition(); + var node = t.withLoc(t.global(globalType, init), endLoc, startLoc); + 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 startLoc = 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 _i4 = 0; _i4 < indices; _i4++) { + var indexu32 = readU32(); + var index = indexu32.value; + eatBytes(indexu32.nextIndex); + dump([index], "index"); + indexValues.push(t.indexLiteral(index)); + } + + var endLoc = getPosition(); + var elemNode = t.withLoc(t.elem(t.indexLiteral(tableindex), instr, indexValues), endLoc, startLoc); + 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"); + 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); + + if (instrs.length !== 1) { + 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 startPosition = getPosition(); + var u32 = readU32(); + var sectionSizeInBytes = u32.value; + eatBytes(u32.nextIndex); + var sectionSizeInBytesEndLoc = getPosition(); + var sectionSizeInBytesNode = t.withLoc(t.numberLiteralFromRaw(sectionSizeInBytes), sectionSizeInBytesEndLoc, startPosition); + + switch (sectionId) { + case _helperWasmBytecode.default.sections.type: + { + dumpSep("section Type"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition = getPosition(); + + var _u = readU32(); + + var numberOfTypes = _u.value; + eatBytes(_u.nextIndex); + var endPosition = getPosition(); + + var _metadata = t.sectionMetadata("type", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfTypes), endPosition, _startPosition)); + + 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 _startPosition2 = getPosition(); + + var _u2 = readU32(); + + var numberOfTable = _u2.value; + eatBytes(_u2.nextIndex); + + var _endPosition = getPosition(); + + dump([numberOfTable], "num tables"); + + var _metadata2 = t.sectionMetadata("table", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfTable), _endPosition, _startPosition2)); + + var _nodes2 = parseTableSection(numberOfTable); + + return { + nodes: _nodes2, + metadata: _metadata2, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.import: + { + dumpSep("section Import"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition3 = getPosition(); + + var numberOfImportsu32 = readU32(); + var numberOfImports = numberOfImportsu32.value; + eatBytes(numberOfImportsu32.nextIndex); + + var _endPosition2 = getPosition(); + + dump([numberOfImports], "number of imports"); + + var _metadata3 = t.sectionMetadata("import", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfImports), _endPosition2, _startPosition3)); + + var _nodes3 = parseImportSection(numberOfImports); + + return { + nodes: _nodes3, + metadata: _metadata3, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.func: + { + dumpSep("section Function"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition4 = getPosition(); + + var numberOfFunctionsu32 = readU32(); + var numberOfFunctions = numberOfFunctionsu32.value; + eatBytes(numberOfFunctionsu32.nextIndex); + + var _endPosition3 = getPosition(); + + var _metadata4 = t.sectionMetadata("func", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfFunctions), _endPosition3, _startPosition4)); + + parseFuncSection(numberOfFunctions); + var _nodes4 = []; + return { + nodes: _nodes4, + metadata: _metadata4, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.export: + { + dumpSep("section Export"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition5 = getPosition(); + + var _u3 = readU32(); + + var numberOfExport = _u3.value; + eatBytes(_u3.nextIndex); + + var _endPosition4 = getPosition(); + + var _metadata5 = t.sectionMetadata("export", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfExport), _endPosition4, _startPosition5)); + + parseExportSection(numberOfExport); + var _nodes5 = []; + return { + nodes: _nodes5, + metadata: _metadata5, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.code: + { + dumpSep("section Code"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition6 = getPosition(); + + var _u4 = readU32(); + + var numberOfFuncs = _u4.value; + eatBytes(_u4.nextIndex); + + var _endPosition5 = getPosition(); + + var _metadata6 = t.sectionMetadata("code", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfFuncs), _endPosition5, _startPosition6)); + + if (opts.ignoreCodeSection === true) { + var remainingBytes = sectionSizeInBytes - _u4.nextIndex; + eatBytes(remainingBytes); // eat the entire section + } else { + parseCodeSection(numberOfFuncs); + } + + var _nodes6 = []; + return { + nodes: _nodes6, + metadata: _metadata6, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.start: + { + dumpSep("section Start"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _metadata7 = t.sectionMetadata("start", startOffset, sectionSizeInBytesNode); + + var _nodes7 = [parseStartSection()]; + return { + nodes: _nodes7, + metadata: _metadata7, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.element: + { + dumpSep("section Element"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition7 = getPosition(); + + var numberOfElementsu32 = readU32(); + var numberOfElements = numberOfElementsu32.value; + eatBytes(numberOfElementsu32.nextIndex); + + var _endPosition6 = getPosition(); + + var _metadata8 = t.sectionMetadata("element", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfElements), _endPosition6, _startPosition7)); + + var _nodes8 = parseElemSection(numberOfElements); + + return { + nodes: _nodes8, + metadata: _metadata8, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.global: + { + dumpSep("section Global"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition8 = getPosition(); + + var numberOfGlobalsu32 = readU32(); + var numberOfGlobals = numberOfGlobalsu32.value; + eatBytes(numberOfGlobalsu32.nextIndex); + + var _endPosition7 = getPosition(); + + var _metadata9 = t.sectionMetadata("global", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(numberOfGlobals), _endPosition7, _startPosition8)); + + var _nodes9 = parseGlobalSection(numberOfGlobals); + + return { + nodes: _nodes9, + metadata: _metadata9, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.memory: + { + dumpSep("section Memory"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _startPosition9 = getPosition(); + + var _numberOfElementsu = readU32(); + + var _numberOfElements = _numberOfElementsu.value; + eatBytes(_numberOfElementsu.nextIndex); + + var _endPosition8 = getPosition(); + + var _metadata10 = t.sectionMetadata("memory", startOffset, sectionSizeInBytesNode, t.withLoc(t.numberLiteralFromRaw(_numberOfElements), _endPosition8, _startPosition9)); + + var _nodes10 = parseMemorySection(_numberOfElements); + + return { + nodes: _nodes10, + metadata: _metadata10, + nextSectionIndex: nextSectionIndex + }; + } + + case _helperWasmBytecode.default.sections.data: + { + dumpSep("section Data"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + + var _metadata11 = t.sectionMetadata("data", startOffset, sectionSizeInBytesNode); + + var _startPosition10 = getPosition(); + + var _numberOfElementsu2 = readU32(); + + var _numberOfElements2 = _numberOfElementsu2.value; + eatBytes(_numberOfElementsu2.nextIndex); + + var _endPosition9 = getPosition(); + + _metadata11.vectorOfSize = t.withLoc(t.numberLiteralFromRaw(_numberOfElements2), _endPosition9, _startPosition10); + + if (opts.ignoreDataSection === true) { + var _remainingBytes = sectionSizeInBytes - _numberOfElementsu2.nextIndex; + + eatBytes(_remainingBytes); // eat the entire section + + dumpSep("ignore data (" + sectionSizeInBytes + " bytes)"); + return { + nodes: [], + metadata: _metadata11, + nextSectionIndex: nextSectionIndex + }; + } else { + var _nodes11 = parseDataSection(_numberOfElements2); + + return { + nodes: _nodes11, + metadata: _metadata11, + nextSectionIndex: nextSectionIndex + }; + } + } + + case _helperWasmBytecode.default.sections.custom: + { + dumpSep("section Custom"); + dump([sectionId], "section code"); + dump([sectionSizeInBytes], "section size"); + var _metadata12 = [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") { + try { + _metadata12.push.apply(_metadata12, _toConsumableArray(parseNameSection(_remainingBytes2))); + } catch (e) { + console.warn("Failed to decode custom \"name\" section @".concat(offset, "; ignoring (").concat(e.message, ").")); + eatBytes(_remainingBytes2); + } + } else { + // We don't parse the custom section + eatBytes(_remainingBytes2); + dumpSep("ignore custom " + JSON.stringify(sectionName.value) + " section (" + _remainingBytes2 + " bytes)"); + } + + return { + nodes: [], + metadata: _metadata12, + nextSectionIndex: nextSectionIndex + }; + } + } + + throw new _helperApiError.CompileError("Unexpected section: " + toHex(sectionId)); + } + + parseModuleHeader(); + parseVersion(); + var moduleFields = []; + var sectionIndex = 0; + var moduleMetadata = { + sections: [], + functionNames: [], + localNames: [] + }; + /** + * All the generate declaration are going to be stored in our state + */ + + while (offset < buf.length) { + var _parseSection = parseSection(sectionIndex), + _nodes12 = _parseSection.nodes, + _metadata13 = _parseSection.metadata, + nextSectionIndex = _parseSection.nextSectionIndex; + + moduleFields.push.apply(moduleFields, _toConsumableArray(_nodes12)); + var metadataArray = Array.isArray(_metadata13) ? _metadata13 : [_metadata13]; + metadataArray.forEach(function (metadataItem) { + if (metadataItem.type === "FunctionNameMetadata") { + moduleMetadata.functionNames.push(metadataItem); + } else if (metadataItem.type === "LocalNameMetadata") { + moduleMetadata.localNames.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 startLoc = decodedElementInCodeSection.startLoc, + endLoc = decodedElementInCodeSection.endLoc, + bodySize = decodedElementInCodeSection.bodySize; + funcNode = t.withLoc(funcNode, endLoc, startLoc); + 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)); + return t.program([module]); +}
\ No newline at end of file diff --git a/node_modules/@webassemblyjs/wasm-parser/lib/index.js b/node_modules/@webassemblyjs/wasm-parser/lib/index.js new file mode 100644 index 00000000..b99d77ee --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/lib/index.js @@ -0,0 +1,249 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.decode = decode; + +var decoder = _interopRequireWildcard(require("./decoder")); + +var t = _interopRequireWildcard(require("@webassemblyjs/ast")); + +function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } } + +var defaultDecoderOpts = { + dump: false, + ignoreCodeSection: false, + ignoreDataSection: false, + ignoreCustomNameSection: false +}; // traverses the AST, locating function name metadata, which is then +// used to update index-based identifiers with function names + +function restoreFunctionNames(ast) { + var functionNames = []; + t.traverse(ast, { + FunctionNameMetadata: function FunctionNameMetadata(_ref) { + var node = _ref.node; + functionNames.push({ + name: node.value, + index: node.index + }); + } + }); + + if (functionNames.length === 0) { + return; + } + + t.traverse(ast, { + Func: function (_Func) { + function Func(_x) { + return _Func.apply(this, arguments); + } + + Func.toString = function () { + return _Func.toString(); + }; + + return Func; + }(function (_ref2) { + var node = _ref2.node; + // $FlowIgnore + var nodeName = node.name; + var indexBasedFunctionName = nodeName.value; + var index = Number(indexBasedFunctionName.replace("func_", "")); + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + nodeName.value = functionName.name; // $FlowIgnore + + delete nodeName.raw; + } + }), + // Also update the reference in the export + ModuleExport: function (_ModuleExport) { + function ModuleExport(_x2) { + return _ModuleExport.apply(this, arguments); + } + + ModuleExport.toString = function () { + return _ModuleExport.toString(); + }; + + return ModuleExport; + }(function (_ref3) { + var node = _ref3.node; + + if (node.descr.exportType === "Func") { + // $FlowIgnore + var nodeName = node.descr.id; + var index = nodeName.value; + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + node.descr.id = t.identifier(functionName.name); + } + } + }), + ModuleImport: function (_ModuleImport) { + function ModuleImport(_x3) { + return _ModuleImport.apply(this, arguments); + } + + ModuleImport.toString = function () { + return _ModuleImport.toString(); + }; + + return ModuleImport; + }(function (_ref4) { + var node = _ref4.node; + + if (node.descr.type === "FuncImportDescr") { + // $FlowIgnore + var indexBasedFunctionName = node.descr.id; + var index = Number(indexBasedFunctionName.replace("func_", "")); + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + // $FlowIgnore + node.descr.id = t.identifier(functionName.name); + } + } + }), + CallInstruction: function (_CallInstruction) { + function CallInstruction(_x4) { + return _CallInstruction.apply(this, arguments); + } + + CallInstruction.toString = function () { + return _CallInstruction.toString(); + }; + + return CallInstruction; + }(function (nodePath) { + var node = nodePath.node; + var index = node.index.value; + var functionName = functionNames.find(function (f) { + return f.index === index; + }); + + if (functionName) { + node.index = t.identifier(functionName.name); // $FlowIgnore + + delete node.raw; + } + }) + }); +} + +function restoreLocalNames(ast) { + var localNames = []; + t.traverse(ast, { + LocalNameMetadata: function LocalNameMetadata(_ref5) { + var node = _ref5.node; + localNames.push({ + name: node.value, + localIndex: node.localIndex, + functionIndex: node.functionIndex + }); + } + }); + + if (localNames.length === 0) { + return; + } + + t.traverse(ast, { + Func: function (_Func2) { + function Func(_x5) { + return _Func2.apply(this, arguments); + } + + Func.toString = function () { + return _Func2.toString(); + }; + + return Func; + }(function (_ref6) { + var node = _ref6.node; + var signature = node.signature; + + if (signature.type !== "Signature") { + return; + } // $FlowIgnore + + + var nodeName = node.name; + var indexBasedFunctionName = nodeName.value; + var functionIndex = Number(indexBasedFunctionName.replace("func_", "")); + signature.params.forEach(function (param, paramIndex) { + var paramName = localNames.find(function (f) { + return f.localIndex === paramIndex && f.functionIndex === functionIndex; + }); + + if (paramName && paramName.name !== "") { + param.id = paramName.name; + } + }); + }) + }); +} + +function restoreModuleName(ast) { + t.traverse(ast, { + ModuleNameMetadata: function (_ModuleNameMetadata) { + function ModuleNameMetadata(_x6) { + return _ModuleNameMetadata.apply(this, arguments); + } + + ModuleNameMetadata.toString = function () { + return _ModuleNameMetadata.toString(); + }; + + return ModuleNameMetadata; + }(function (moduleNameMetadataPath) { + // update module + t.traverse(ast, { + Module: function (_Module) { + function Module(_x7) { + return _Module.apply(this, arguments); + } + + Module.toString = function () { + return _Module.toString(); + }; + + return Module; + }(function (_ref7) { + var node = _ref7.node; + var name = moduleNameMetadataPath.node.value; // compatiblity with wast-parser + + if (name === "") { + name = null; + } + + node.id = name; + }) + }); + }) + }); +} + +function decode(buf, customOpts) { + var opts = Object.assign({}, defaultDecoderOpts, customOpts); + var ast = decoder.decode(buf, opts); + + if (opts.ignoreCustomNameSection === false) { + restoreFunctionNames(ast); + restoreLocalNames(ast); + restoreModuleName(ast); + } + + return ast; +}
\ No newline at end of file diff --git a/node_modules/@webassemblyjs/wasm-parser/lib/types/decoder.js b/node_modules/@webassemblyjs/wasm-parser/lib/types/decoder.js new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/lib/types/decoder.js diff --git a/node_modules/@webassemblyjs/wasm-parser/package.json b/node_modules/@webassemblyjs/wasm-parser/package.json new file mode 100644 index 00000000..f542de13 --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/package.json @@ -0,0 +1,43 @@ +{ + "name": "@webassemblyjs/wasm-parser", + "version": "1.7.11", + "keywords": [ + "webassembly", + "javascript", + "ast", + "parser", + "wasm" + ], + "description": "WebAssembly binary format parser", + "main": "lib/index.js", + "module": "esm/index.js", + "scripts": { + "test": "mocha" + }, + "author": "Sven Sauleau", + "license": "MIT", + "dependencies": { + "@webassemblyjs/ast": "1.7.11", + "@webassemblyjs/helper-api-error": "1.7.11", + "@webassemblyjs/helper-wasm-bytecode": "1.7.11", + "@webassemblyjs/ieee754": "1.7.11", + "@webassemblyjs/leb128": "1.7.11", + "@webassemblyjs/utf8": "1.7.11" + }, + "repository": { + "type": "git", + "url": "https://github.com/xtuc/webassemblyjs.git" + }, + "publishConfig": { + "access": "public" + }, + "devDependencies": { + "@webassemblyjs/helper-buffer": "1.7.11", + "@webassemblyjs/helper-test-framework": "1.7.11", + "@webassemblyjs/helper-wasm-bytecode": "1.7.7", + "@webassemblyjs/wasm-gen": "1.7.11", + "@webassemblyjs/wast-parser": "1.7.11", + "wabt": "1.0.0-nightly.20180421" + }, + "gitHead": "4291990bfc4648bc6676091a955d12dc3c7e5909" +} diff --git a/node_modules/@webassemblyjs/wasm-parser/webassemblyjs-wasm-parser-1.7.10.tgz b/node_modules/@webassemblyjs/wasm-parser/webassemblyjs-wasm-parser-1.7.10.tgz Binary files differnew file mode 100644 index 00000000..0149f232 --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-parser/webassemblyjs-wasm-parser-1.7.10.tgz |