File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
"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; } }
/**
* 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;
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;
}