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"use strict"; function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); } Object.defineProperty(exports, "__esModule", { value: true }); exports.decode = decode; var decoder = _interopRequireWildcard(require("./decoder")); var t = _interopRequireWildcard(require("@webassemblyjs/ast")); function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); } function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; } /** * TODO(sven): I added initial props, but we should rather fix * https://github.com/xtuc/webassemblyjs/issues/405 */ 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) { var oldValue = nodeName.value; nodeName.value = functionName.name; // $FlowIgnore nodeName.numeric = oldValue; // $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) { var oldValue = node.index; node.index = t.identifier(functionName.name); node.numeric = oldValue; // $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; }