diff options
Diffstat (limited to 'node_modules/@webassemblyjs/wasm-gen/esm')
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-gen/esm/encoder/index.js | 301 | ||||
| -rw-r--r-- | node_modules/@webassemblyjs/wasm-gen/esm/index.js | 51 |
2 files changed, 352 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/wasm-gen/esm/encoder/index.js b/node_modules/@webassemblyjs/wasm-gen/esm/encoder/index.js new file mode 100644 index 0000000..ec31249 --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-gen/esm/encoder/index.js @@ -0,0 +1,301 @@ +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 * as leb from "@webassemblyjs/leb128"; +import * as ieee754 from "@webassemblyjs/ieee754"; +import * as utf8 from "@webassemblyjs/utf8"; +import constants from "@webassemblyjs/helper-wasm-bytecode"; +import { encodeNode } from "../index"; + +function assertNotIdentifierNode(n) { + if (n.type === "Identifier") { + throw new Error("Unsupported node Identifier"); + } +} + +export function encodeVersion(v) { + var bytes = constants.moduleVersion; + bytes[0] = v; + return bytes; +} +export function encodeHeader() { + return constants.magicModuleHeader; +} +export function encodeU32(v) { + var uint8view = new Uint8Array(leb.encodeU32(v)); + + var array = _toConsumableArray(uint8view); + + return array; +} +export function encodeI32(v) { + var uint8view = new Uint8Array(leb.encodeI32(v)); + + var array = _toConsumableArray(uint8view); + + return array; +} +export function encodeI64(v) { + var uint8view = new Uint8Array(leb.encodeI64(v)); + + var array = _toConsumableArray(uint8view); + + return array; +} +export function encodeVec(elements) { + var size = encodeU32(elements.length); + return _toConsumableArray(size).concat(_toConsumableArray(elements)); +} +export function encodeValtype(v) { + var byte = constants.valtypesByString[v]; + + if (typeof byte === "undefined") { + throw new Error("Unknown valtype: " + v); + } + + return parseInt(byte, 10); +} +export function encodeMutability(v) { + var byte = constants.globalTypesByString[v]; + + if (typeof byte === "undefined") { + throw new Error("Unknown mutability: " + v); + } + + return parseInt(byte, 10); +} +export function encodeUTF8Vec(str) { + return encodeVec(utf8.encode(str)); +} +export function encodeLimits(n) { + var out = []; + + if (typeof n.max === "number") { + out.push(0x01); + out.push.apply(out, _toConsumableArray(encodeU32(n.min))); // $FlowIgnore: ensured by the typeof + + out.push.apply(out, _toConsumableArray(encodeU32(n.max))); + } else { + out.push(0x00); + out.push.apply(out, _toConsumableArray(encodeU32(n.min))); + } + + return out; +} +export function encodeModuleImport(n) { + var out = []; + out.push.apply(out, _toConsumableArray(encodeUTF8Vec(n.module))); + out.push.apply(out, _toConsumableArray(encodeUTF8Vec(n.name))); + + switch (n.descr.type) { + case "GlobalType": + { + out.push(0x03); // $FlowIgnore: GlobalType ensure that these props exists + + out.push(encodeValtype(n.descr.valtype)); // $FlowIgnore: GlobalType ensure that these props exists + + out.push(encodeMutability(n.descr.mutability)); + break; + } + + case "Memory": + { + out.push(0x02); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeLimits(n.descr.limits))); + break; + } + + case "Table": + { + out.push(0x01); + out.push(0x70); // element type + // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeLimits(n.descr.limits))); + break; + } + + case "FuncImportDescr": + { + out.push(0x00); // $FlowIgnore + + assertNotIdentifierNode(n.descr.id); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeU32(n.descr.id.value))); + break; + } + + default: + throw new Error("Unsupport operation: encode module import of type: " + n.descr.type); + } + + return out; +} +export function encodeSectionMetadata(n) { + var out = []; + var sectionId = constants.sections[n.section]; + + if (typeof sectionId === "undefined") { + throw new Error("Unknown section: " + n.section); + } + + if (n.section === "start") { + /** + * This is not implemented yet because it's a special case which + * doesn't have a vector in its section. + */ + throw new Error("Unsupported section encoding of type start"); + } + + out.push(sectionId); + out.push.apply(out, _toConsumableArray(encodeU32(n.size.value))); + out.push.apply(out, _toConsumableArray(encodeU32(n.vectorOfSize.value))); + return out; +} +export function encodeCallInstruction(n) { + var out = []; + assertNotIdentifierNode(n.index); + out.push(0x10); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeU32(n.index.value))); + return out; +} +export function encodeCallIndirectInstruction(n) { + var out = []; // $FlowIgnore + + assertNotIdentifierNode(n.index); + out.push(0x11); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeU32(n.index.value))); // add a reserved byte + + out.push(0x00); + return out; +} +export function encodeModuleExport(n) { + var out = []; + assertNotIdentifierNode(n.descr.id); + var exportTypeByteString = constants.exportTypesByName[n.descr.exportType]; + + if (typeof exportTypeByteString === "undefined") { + throw new Error("Unknown export of type: " + n.descr.exportType); + } + + var exportTypeByte = parseInt(exportTypeByteString, 10); + out.push.apply(out, _toConsumableArray(encodeUTF8Vec(n.name))); + out.push(exportTypeByte); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeU32(n.descr.id.value))); + return out; +} +export function encodeTypeInstruction(n) { + var out = [0x60]; + var params = n.functype.params.map(function (x) { + return x.valtype; + }).map(encodeValtype); + var results = n.functype.results.map(encodeValtype); + out.push.apply(out, _toConsumableArray(encodeVec(params))); + out.push.apply(out, _toConsumableArray(encodeVec(results))); + return out; +} +export function encodeInstr(n) { + var out = []; + var instructionName = n.id; + + if (typeof n.object === "string") { + instructionName = "".concat(n.object, ".").concat(String(n.id)); + } + + var byteString = constants.symbolsByName[instructionName]; + + if (typeof byteString === "undefined") { + throw new Error("encodeInstr: unknown instruction " + JSON.stringify(instructionName)); + } + + var byte = parseInt(byteString, 10); + out.push(byte); + + if (n.args) { + n.args.forEach(function (arg) { + var encoder = encodeU32; // find correct encoder + + if (n.object === "i32") { + encoder = encodeI32; + } + + if (n.object === "i64") { + encoder = encodeI64; + } + + if (n.object === "f32") { + encoder = ieee754.encodeF32; + } + + if (n.object === "f64") { + encoder = ieee754.encodeF64; + } + + if (arg.type === "NumberLiteral" || arg.type === "FloatLiteral" || arg.type === "LongNumberLiteral") { + // $FlowIgnore + out.push.apply(out, _toConsumableArray(encoder(arg.value))); + } else { + throw new Error("Unsupported instruction argument encoding " + JSON.stringify(arg.type)); + } + }); + } + + return out; +} + +function encodeExpr(instrs) { + var out = []; + instrs.forEach(function (instr) { + // $FlowIgnore + var n = encodeNode(instr); + out.push.apply(out, _toConsumableArray(n)); + }); + return out; +} + +export function encodeStringLiteral(n) { + return encodeUTF8Vec(n.value); +} +export function encodeGlobal(n) { + var out = []; + var _n$globalType = n.globalType, + valtype = _n$globalType.valtype, + mutability = _n$globalType.mutability; + out.push(encodeValtype(valtype)); + out.push(encodeMutability(mutability)); + out.push.apply(out, _toConsumableArray(encodeExpr(n.init))); + return out; +} +export function encodeFuncBody(n) { + var out = []; + out.push(-1); // temporary function body size + // FIXME(sven): get the func locals? + + var localBytes = encodeVec([]); + out.push.apply(out, _toConsumableArray(localBytes)); + var funcBodyBytes = encodeExpr(n.body); + out[0] = funcBodyBytes.length + localBytes.length; + out.push.apply(out, _toConsumableArray(funcBodyBytes)); + return out; +} +export function encodeIndexInFuncSection(n) { + assertNotIdentifierNode(n.index); // $FlowIgnore + + return encodeU32(n.index.value); +} +export function encodeElem(n) { + var out = []; + assertNotIdentifierNode(n.table); // $FlowIgnore + + out.push.apply(out, _toConsumableArray(encodeU32(n.table.value))); + out.push.apply(out, _toConsumableArray(encodeExpr(n.offset))); // $FlowIgnore + + var funcs = n.funcs.reduce(function (acc, x) { + return _toConsumableArray(acc).concat(_toConsumableArray(encodeU32(x.value))); + }, []); + out.push.apply(out, _toConsumableArray(encodeVec(funcs))); + return out; +}
\ No newline at end of file diff --git a/node_modules/@webassemblyjs/wasm-gen/esm/index.js b/node_modules/@webassemblyjs/wasm-gen/esm/index.js new file mode 100644 index 0000000..83bc19f --- /dev/null +++ b/node_modules/@webassemblyjs/wasm-gen/esm/index.js @@ -0,0 +1,51 @@ +import * as encoder from "./encoder"; +export function encodeNode(n) { + switch (n.type) { + case "ModuleImport": + // $FlowIgnore: ModuleImport ensure that the node is well formated + return encoder.encodeModuleImport(n); + + case "SectionMetadata": + // $FlowIgnore: SectionMetadata ensure that the node is well formated + return encoder.encodeSectionMetadata(n); + + case "CallInstruction": + // $FlowIgnore: SectionMetadata ensure that the node is well formated + return encoder.encodeCallInstruction(n); + + case "CallIndirectInstruction": + // $FlowIgnore: SectionMetadata ensure that the node is well formated + return encoder.encodeCallIndirectInstruction(n); + + case "TypeInstruction": + return encoder.encodeTypeInstruction(n); + + case "Instr": + // $FlowIgnore + return encoder.encodeInstr(n); + + case "ModuleExport": + // $FlowIgnore: SectionMetadata ensure that the node is well formated + return encoder.encodeModuleExport(n); + + case "Global": + // $FlowIgnore + return encoder.encodeGlobal(n); + + case "Func": + return encoder.encodeFuncBody(n); + + case "IndexInFuncSection": + return encoder.encodeIndexInFuncSection(n); + + case "StringLiteral": + return encoder.encodeStringLiteral(n); + + case "Elem": + return encoder.encodeElem(n); + + default: + throw new Error("Unsupported encoding for node of type: " + JSON.stringify(n.type)); + } +} +export var encodeU32 = encoder.encodeU32;
\ No newline at end of file |