diff --git a/README.md b/README.md index d759c4c..1caae8c 100644 --- a/README.md +++ b/README.md @@ -9,7 +9,7 @@ The most important part of this example is the app.js file, which specifies the **If you want IE6-8 support**, clone this repo, but replace the jQuery file with the latest jQuery 1.x release. The jQuery 2 file used in this project does not work with those browsers. -###Project structure +### Project structure tools/ @@ -29,7 +29,7 @@ www/js/ - app/ - main.js -###How it's set up +### How it's set up The main file of this setup is www/js/app.js. It is loaded from app.html by this line: ```html @@ -64,11 +64,11 @@ define(["jquery", "jquery.alpha", "jquery.beta"], function($) { }); ``` -###How to see it in action +### How to see it in action Just serve up the www/ folder using any web server you'd like. To get you set up quickly, we've included a node.js static file server in tools/. Start the server by typing `node tools/server.js` from the command line, and then go to [localhost:8888/www/app.html](http://localhost:8888/www/app.html) in your browser. -###How to optimize it using r.js +### How to optimize it using r.js To use the optimizer, you need [node.js](http://nodejs.org) or Java 6 installed. These instructions assume Node is being used. See the [Optimization page](http://requirejs.org/docs/optimization.html) for more information. r.js and a build configuration is included in the tools/ folder. To build, navigate to tools/ and type `node r.js -o build.js`. You will find the built product in the www-build folder. If you serve that directory instead, you can see in the network panel of the web developer tools that the files aren't loaded separately any more. diff --git a/tools/r.js b/tools/r.js index 6df0d13..46f2864 100644 --- a/tools/r.js +++ b/tools/r.js @@ -1,5 +1,5 @@ /** - * @license r.js 2.3.2 Copyright jQuery Foundation and other contributors. + * @license r.js 2.3.6 Copyright jQuery Foundation and other contributors. * Released under MIT license, http://github.com/requirejs/r.js/LICENSE */ @@ -19,7 +19,7 @@ var requirejs, require, define, xpcUtil; (function (console, args, readFileFunc) { var fileName, env, fs, vm, path, exec, rhinoContext, dir, nodeRequire, nodeDefine, exists, reqMain, loadedOptimizedLib, existsForNode, Cc, Ci, - version = '2.3.2', + version = '2.3.6', jsSuffixRegExp = /\.js$/, commandOption = '', useLibLoaded = {}, @@ -248,7 +248,7 @@ var requirejs, require, define, xpcUtil; } /** vim: et:ts=4:sw=4:sts=4 - * @license RequireJS 2.3.2 Copyright jQuery Foundation and other contributors. + * @license RequireJS 2.3.6 Copyright jQuery Foundation and other contributors. * Released under MIT license, https://github.com/requirejs/requirejs/blob/master/LICENSE */ //Not using strict: uneven strict support in browsers, #392, and causes @@ -260,7 +260,7 @@ var requirejs, require, define, xpcUtil; (function (global, setTimeout) { var req, s, head, baseElement, dataMain, src, interactiveScript, currentlyAddingScript, mainScript, subPath, - version = '2.3.2', + version = '2.3.6', commentRegExp = /\/\*[\s\S]*?\*\/|([^:"'=]|^)\/\/.*$/mg, cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g, jsSuffixRegExp = /\.js$/, @@ -414,7 +414,7 @@ var requirejs, require, define, xpcUtil; * @returns {Error} */ function makeError(id, msg, err, requireModules) { - var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id); + var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id); e.requireType = id; e.requireModules = requireModules; if (err) { @@ -689,7 +689,9 @@ var requirejs, require, define, xpcUtil; //Account for relative paths if there is a base name. if (name) { if (prefix) { - if (pluginModule && pluginModule.normalize) { + if (isNormalized) { + normalizedName = name; + } else if (pluginModule && pluginModule.normalize) { //Plugin is loaded, use its normalize method. normalizedName = pluginModule.normalize(name, function (name) { return normalize(name, parentName, applyMap); @@ -1221,7 +1223,8 @@ var requirejs, require, define, xpcUtil; //prefix and name should already be normalized, no need //for applying map config again either. normalizedMap = makeModuleMap(map.prefix + '!' + name, - this.map.parentMap); + this.map.parentMap, + true); on(normalizedMap, 'defined', bind(this, function (value) { this.map.normalizedMap = normalizedMap; @@ -4467,5746 +4470,6715 @@ define('logger', ['env!env/print'], function (print) { //so that the build does not attempt to inline some env modules, //like Node's fs and path. -/* - Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -(function (root, factory) { - 'use strict'; - - // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, - // Rhino, and plain browser loading. - - /* istanbul ignore next */ - if (typeof define === 'function' && define.amd) { - define('esprima', ['exports'], factory); - } else if (typeof exports !== 'undefined') { - factory(exports); - } else { - factory((root.esprima = {})); - } -}(this, function (exports) { - 'use strict'; - - var Token, - TokenName, - FnExprTokens, - Syntax, - PlaceHolders, - Messages, - Regex, - source, - strict, - index, - lineNumber, - lineStart, - hasLineTerminator, - lastIndex, - lastLineNumber, - lastLineStart, - startIndex, - startLineNumber, - startLineStart, - scanning, - length, - lookahead, - state, - extra, - isBindingElement, - isAssignmentTarget, - firstCoverInitializedNameError; - - Token = { - BooleanLiteral: 1, - EOF: 2, - Identifier: 3, - Keyword: 4, - NullLiteral: 5, - NumericLiteral: 6, - Punctuator: 7, - StringLiteral: 8, - RegularExpression: 9, - Template: 10 - }; - - TokenName = {}; - TokenName[Token.BooleanLiteral] = 'Boolean'; - TokenName[Token.EOF] = ''; - TokenName[Token.Identifier] = 'Identifier'; - TokenName[Token.Keyword] = 'Keyword'; - TokenName[Token.NullLiteral] = 'Null'; - TokenName[Token.NumericLiteral] = 'Numeric'; - TokenName[Token.Punctuator] = 'Punctuator'; - TokenName[Token.StringLiteral] = 'String'; - TokenName[Token.RegularExpression] = 'RegularExpression'; - TokenName[Token.Template] = 'Template'; - - // A function following one of those tokens is an expression. - FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new', - 'return', 'case', 'delete', 'throw', 'void', - // assignment operators - '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=', - '&=', '|=', '^=', ',', - // binary/unary operators - '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&', - '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=', - '<=', '<', '>', '!=', '!==']; - - Syntax = { - AssignmentExpression: 'AssignmentExpression', - AssignmentPattern: 'AssignmentPattern', - ArrayExpression: 'ArrayExpression', - ArrayPattern: 'ArrayPattern', - ArrowFunctionExpression: 'ArrowFunctionExpression', - BlockStatement: 'BlockStatement', - BinaryExpression: 'BinaryExpression', - BreakStatement: 'BreakStatement', - CallExpression: 'CallExpression', - CatchClause: 'CatchClause', - ClassBody: 'ClassBody', - ClassDeclaration: 'ClassDeclaration', - ClassExpression: 'ClassExpression', - ConditionalExpression: 'ConditionalExpression', - ContinueStatement: 'ContinueStatement', - DoWhileStatement: 'DoWhileStatement', - DebuggerStatement: 'DebuggerStatement', - EmptyStatement: 'EmptyStatement', - ExportAllDeclaration: 'ExportAllDeclaration', - ExportDefaultDeclaration: 'ExportDefaultDeclaration', - ExportNamedDeclaration: 'ExportNamedDeclaration', - ExportSpecifier: 'ExportSpecifier', - ExpressionStatement: 'ExpressionStatement', - ForStatement: 'ForStatement', - ForOfStatement: 'ForOfStatement', - ForInStatement: 'ForInStatement', - FunctionDeclaration: 'FunctionDeclaration', - FunctionExpression: 'FunctionExpression', - Identifier: 'Identifier', - IfStatement: 'IfStatement', - ImportDeclaration: 'ImportDeclaration', - ImportDefaultSpecifier: 'ImportDefaultSpecifier', - ImportNamespaceSpecifier: 'ImportNamespaceSpecifier', - ImportSpecifier: 'ImportSpecifier', - Literal: 'Literal', - LabeledStatement: 'LabeledStatement', - LogicalExpression: 'LogicalExpression', - MemberExpression: 'MemberExpression', - MetaProperty: 'MetaProperty', - MethodDefinition: 'MethodDefinition', - NewExpression: 'NewExpression', - ObjectExpression: 'ObjectExpression', - ObjectPattern: 'ObjectPattern', - Program: 'Program', - Property: 'Property', - RestElement: 'RestElement', - ReturnStatement: 'ReturnStatement', - SequenceExpression: 'SequenceExpression', - SpreadElement: 'SpreadElement', - Super: 'Super', - SwitchCase: 'SwitchCase', - SwitchStatement: 'SwitchStatement', - TaggedTemplateExpression: 'TaggedTemplateExpression', - TemplateElement: 'TemplateElement', - TemplateLiteral: 'TemplateLiteral', - ThisExpression: 'ThisExpression', - ThrowStatement: 'ThrowStatement', - TryStatement: 'TryStatement', - UnaryExpression: 'UnaryExpression', - UpdateExpression: 'UpdateExpression', - VariableDeclaration: 'VariableDeclaration', - VariableDeclarator: 'VariableDeclarator', - WhileStatement: 'WhileStatement', - WithStatement: 'WithStatement', - YieldExpression: 'YieldExpression' - }; +(function webpackUniversalModuleDefinition(root, factory) { +/* istanbul ignore next */ + if(typeof define === 'function' && define.amd) + define('esprima', [], factory); + else if(typeof exports === 'object' && typeof module === 'object') + module.exports = factory(); +/* istanbul ignore next */ + else if(typeof exports === 'object') + exports["esprima"] = factory(); + else + root["esprima"] = factory(); +})(this, function() { +return /******/ (function(modules) { // webpackBootstrap +/******/ // The module cache +/******/ var installedModules = {}; - PlaceHolders = { - ArrowParameterPlaceHolder: 'ArrowParameterPlaceHolder' - }; +/******/ // The require function +/******/ function __webpack_require__(moduleId) { - // Error messages should be identical to V8. - Messages = { - UnexpectedToken: 'Unexpected token %0', - UnexpectedNumber: 'Unexpected number', - UnexpectedString: 'Unexpected string', - UnexpectedIdentifier: 'Unexpected identifier', - UnexpectedReserved: 'Unexpected reserved word', - UnexpectedTemplate: 'Unexpected quasi %0', - UnexpectedEOS: 'Unexpected end of input', - NewlineAfterThrow: 'Illegal newline after throw', - InvalidRegExp: 'Invalid regular expression', - UnterminatedRegExp: 'Invalid regular expression: missing /', - InvalidLHSInAssignment: 'Invalid left-hand side in assignment', - InvalidLHSInForIn: 'Invalid left-hand side in for-in', - InvalidLHSInForLoop: 'Invalid left-hand side in for-loop', - MultipleDefaultsInSwitch: 'More than one default clause in switch statement', - NoCatchOrFinally: 'Missing catch or finally after try', - UnknownLabel: 'Undefined label \'%0\'', - Redeclaration: '%0 \'%1\' has already been declared', - IllegalContinue: 'Illegal continue statement', - IllegalBreak: 'Illegal break statement', - IllegalReturn: 'Illegal return statement', - StrictModeWith: 'Strict mode code may not include a with statement', - StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', - StrictVarName: 'Variable name may not be eval or arguments in strict mode', - StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', - StrictParamDupe: 'Strict mode function may not have duplicate parameter names', - StrictFunctionName: 'Function name may not be eval or arguments in strict mode', - StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', - StrictDelete: 'Delete of an unqualified identifier in strict mode.', - StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', - StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', - StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', - StrictReservedWord: 'Use of future reserved word in strict mode', - TemplateOctalLiteral: 'Octal literals are not allowed in template strings.', - ParameterAfterRestParameter: 'Rest parameter must be last formal parameter', - DefaultRestParameter: 'Unexpected token =', - ObjectPatternAsRestParameter: 'Unexpected token {', - DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals', - ConstructorSpecialMethod: 'Class constructor may not be an accessor', - DuplicateConstructor: 'A class may only have one constructor', - StaticPrototype: 'Classes may not have static property named prototype', - MissingFromClause: 'Unexpected token', - NoAsAfterImportNamespace: 'Unexpected token', - InvalidModuleSpecifier: 'Unexpected token', - IllegalImportDeclaration: 'Unexpected token', - IllegalExportDeclaration: 'Unexpected token', - DuplicateBinding: 'Duplicate binding %0' - }; +/******/ // Check if module is in cache +/* istanbul ignore if */ +/******/ if(installedModules[moduleId]) +/******/ return installedModules[moduleId].exports; - // See also tools/generate-unicode-regex.js. - Regex = { - // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart: - NonAsciiIdentifierStart: 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- }; +/******/ // Execute the module function +/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); - // Ensure the condition is true, otherwise throw an error. - // This is only to have a better contract semantic, i.e. another safety net - // to catch a logic error. The condition shall be fulfilled in normal case. - // Do NOT use this to enforce a certain condition on any user input. +/******/ // Flag the module as loaded +/******/ module.loaded = true; - function assert(condition, message) { - /* istanbul ignore if */ - if (!condition) { - throw new Error('ASSERT: ' + message); - } - } +/******/ // Return the exports of the module +/******/ return module.exports; +/******/ } - function isDecimalDigit(ch) { - return (ch >= 0x30 && ch <= 0x39); // 0..9 - } - function isHexDigit(ch) { - return '0123456789abcdefABCDEF'.indexOf(ch) >= 0; - } +/******/ // expose the modules object (__webpack_modules__) +/******/ __webpack_require__.m = modules; - function isOctalDigit(ch) { - return '01234567'.indexOf(ch) >= 0; - } +/******/ // expose the module cache +/******/ __webpack_require__.c = installedModules; - function octalToDecimal(ch) { - // \0 is not octal escape sequence - var octal = (ch !== '0'), code = '01234567'.indexOf(ch); +/******/ // __webpack_public_path__ +/******/ __webpack_require__.p = ""; - if (index < length && isOctalDigit(source[index])) { - octal = true; - code = code * 8 + '01234567'.indexOf(source[index++]); +/******/ // Load entry module and return exports +/******/ return __webpack_require__(0); +/******/ }) +/************************************************************************/ +/******/ ([ +/* 0 */ +/***/ function(module, exports, __webpack_require__) { - // 3 digits are only allowed when string starts - // with 0, 1, 2, 3 - if ('0123'.indexOf(ch) >= 0 && - index < length && - isOctalDigit(source[index])) { - code = code * 8 + '01234567'.indexOf(source[index++]); - } - } + "use strict"; + /* + Copyright JS Foundation and other contributors, https://js.foundation/ + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + Object.defineProperty(exports, "__esModule", { value: true }); + var comment_handler_1 = __webpack_require__(1); + var jsx_parser_1 = __webpack_require__(3); + var parser_1 = __webpack_require__(8); + var tokenizer_1 = __webpack_require__(15); + function parse(code, options, delegate) { + var commentHandler = null; + var proxyDelegate = function (node, metadata) { + if (delegate) { + delegate(node, metadata); + } + if (commentHandler) { + commentHandler.visit(node, metadata); + } + }; + var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null; + var collectComment = false; + if (options) { + collectComment = (typeof options.comment === 'boolean' && options.comment); + var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment); + if (collectComment || attachComment) { + commentHandler = new comment_handler_1.CommentHandler(); + commentHandler.attach = attachComment; + options.comment = true; + parserDelegate = proxyDelegate; + } + } + var isModule = false; + if (options && typeof options.sourceType === 'string') { + isModule = (options.sourceType === 'module'); + } + var parser; + if (options && typeof options.jsx === 'boolean' && options.jsx) { + parser = new jsx_parser_1.JSXParser(code, options, parserDelegate); + } + else { + parser = new parser_1.Parser(code, options, parserDelegate); + } + var program = isModule ? parser.parseModule() : parser.parseScript(); + var ast = program; + if (collectComment && commentHandler) { + ast.comments = commentHandler.comments; + } + if (parser.config.tokens) { + ast.tokens = parser.tokens; + } + if (parser.config.tolerant) { + ast.errors = parser.errorHandler.errors; + } + return ast; + } + exports.parse = parse; + function parseModule(code, options, delegate) { + var parsingOptions = options || {}; + parsingOptions.sourceType = 'module'; + return parse(code, parsingOptions, delegate); + } + exports.parseModule = parseModule; + function parseScript(code, options, delegate) { + var parsingOptions = options || {}; + parsingOptions.sourceType = 'script'; + return parse(code, parsingOptions, delegate); + } + exports.parseScript = parseScript; + function tokenize(code, options, delegate) { + var tokenizer = new tokenizer_1.Tokenizer(code, options); + var tokens; + tokens = []; + try { + while (true) { + var token = tokenizer.getNextToken(); + if (!token) { + break; + } + if (delegate) { + token = delegate(token); + } + tokens.push(token); + } + } + catch (e) { + tokenizer.errorHandler.tolerate(e); + } + if (tokenizer.errorHandler.tolerant) { + tokens.errors = tokenizer.errors(); + } + return tokens; + } + exports.tokenize = tokenize; + var syntax_1 = __webpack_require__(2); + exports.Syntax = syntax_1.Syntax; + // Sync with *.json manifests. + exports.version = '4.0.1'; - return { - code: code, - octal: octal - }; - } - // ECMA-262 11.2 White Space +/***/ }, +/* 1 */ +/***/ function(module, exports, __webpack_require__) { - function isWhiteSpace(ch) { - return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) || - (ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0); - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var syntax_1 = __webpack_require__(2); + var CommentHandler = (function () { + function CommentHandler() { + this.attach = false; + this.comments = []; + this.stack = []; + this.leading = []; + this.trailing = []; + } + CommentHandler.prototype.insertInnerComments = function (node, metadata) { + // innnerComments for properties empty block + // `function a() {/** comments **\/}` + if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) { + var innerComments = []; + for (var i = this.leading.length - 1; i >= 0; --i) { + var entry = this.leading[i]; + if (metadata.end.offset >= entry.start) { + innerComments.unshift(entry.comment); + this.leading.splice(i, 1); + this.trailing.splice(i, 1); + } + } + if (innerComments.length) { + node.innerComments = innerComments; + } + } + }; + CommentHandler.prototype.findTrailingComments = function (metadata) { + var trailingComments = []; + if (this.trailing.length > 0) { + for (var i = this.trailing.length - 1; i >= 0; --i) { + var entry_1 = this.trailing[i]; + if (entry_1.start >= metadata.end.offset) { + trailingComments.unshift(entry_1.comment); + } + } + this.trailing.length = 0; + return trailingComments; + } + var entry = this.stack[this.stack.length - 1]; + if (entry && entry.node.trailingComments) { + var firstComment = entry.node.trailingComments[0]; + if (firstComment && firstComment.range[0] >= metadata.end.offset) { + trailingComments = entry.node.trailingComments; + delete entry.node.trailingComments; + } + } + return trailingComments; + }; + CommentHandler.prototype.findLeadingComments = function (metadata) { + var leadingComments = []; + var target; + while (this.stack.length > 0) { + var entry = this.stack[this.stack.length - 1]; + if (entry && entry.start >= metadata.start.offset) { + target = entry.node; + this.stack.pop(); + } + else { + break; + } + } + if (target) { + var count = target.leadingComments ? target.leadingComments.length : 0; + for (var i = count - 1; i >= 0; --i) { + var comment = target.leadingComments[i]; + if (comment.range[1] <= metadata.start.offset) { + leadingComments.unshift(comment); + target.leadingComments.splice(i, 1); + } + } + if (target.leadingComments && target.leadingComments.length === 0) { + delete target.leadingComments; + } + return leadingComments; + } + for (var i = this.leading.length - 1; i >= 0; --i) { + var entry = this.leading[i]; + if (entry.start <= metadata.start.offset) { + leadingComments.unshift(entry.comment); + this.leading.splice(i, 1); + } + } + return leadingComments; + }; + CommentHandler.prototype.visitNode = function (node, metadata) { + if (node.type === syntax_1.Syntax.Program && node.body.length > 0) { + return; + } + this.insertInnerComments(node, metadata); + var trailingComments = this.findTrailingComments(metadata); + var leadingComments = this.findLeadingComments(metadata); + if (leadingComments.length > 0) { + node.leadingComments = leadingComments; + } + if (trailingComments.length > 0) { + node.trailingComments = trailingComments; + } + this.stack.push({ + node: node, + start: metadata.start.offset + }); + }; + CommentHandler.prototype.visitComment = function (node, metadata) { + var type = (node.type[0] === 'L') ? 'Line' : 'Block'; + var comment = { + type: type, + value: node.value + }; + if (node.range) { + comment.range = node.range; + } + if (node.loc) { + comment.loc = node.loc; + } + this.comments.push(comment); + if (this.attach) { + var entry = { + comment: { + type: type, + value: node.value, + range: [metadata.start.offset, metadata.end.offset] + }, + start: metadata.start.offset + }; + if (node.loc) { + entry.comment.loc = node.loc; + } + node.type = type; + this.leading.push(entry); + this.trailing.push(entry); + } + }; + CommentHandler.prototype.visit = function (node, metadata) { + if (node.type === 'LineComment') { + this.visitComment(node, metadata); + } + else if (node.type === 'BlockComment') { + this.visitComment(node, metadata); + } + else if (this.attach) { + this.visitNode(node, metadata); + } + }; + return CommentHandler; + }()); + exports.CommentHandler = CommentHandler; - // ECMA-262 11.3 Line Terminators - function isLineTerminator(ch) { - return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029); - } +/***/ }, +/* 2 */ +/***/ function(module, exports) { - // ECMA-262 11.6 Identifier Names and Identifiers + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + exports.Syntax = { + AssignmentExpression: 'AssignmentExpression', + AssignmentPattern: 'AssignmentPattern', + ArrayExpression: 'ArrayExpression', + ArrayPattern: 'ArrayPattern', + ArrowFunctionExpression: 'ArrowFunctionExpression', + AwaitExpression: 'AwaitExpression', + BlockStatement: 'BlockStatement', + BinaryExpression: 'BinaryExpression', + BreakStatement: 'BreakStatement', + CallExpression: 'CallExpression', + CatchClause: 'CatchClause', + ClassBody: 'ClassBody', + ClassDeclaration: 'ClassDeclaration', + ClassExpression: 'ClassExpression', + ConditionalExpression: 'ConditionalExpression', + ContinueStatement: 'ContinueStatement', + DoWhileStatement: 'DoWhileStatement', + DebuggerStatement: 'DebuggerStatement', + EmptyStatement: 'EmptyStatement', + ExportAllDeclaration: 'ExportAllDeclaration', + ExportDefaultDeclaration: 'ExportDefaultDeclaration', + ExportNamedDeclaration: 'ExportNamedDeclaration', + ExportSpecifier: 'ExportSpecifier', + ExpressionStatement: 'ExpressionStatement', + ForStatement: 'ForStatement', + ForOfStatement: 'ForOfStatement', + ForInStatement: 'ForInStatement', + FunctionDeclaration: 'FunctionDeclaration', + FunctionExpression: 'FunctionExpression', + Identifier: 'Identifier', + IfStatement: 'IfStatement', + ImportDeclaration: 'ImportDeclaration', + ImportDefaultSpecifier: 'ImportDefaultSpecifier', + ImportNamespaceSpecifier: 'ImportNamespaceSpecifier', + ImportSpecifier: 'ImportSpecifier', + Literal: 'Literal', + LabeledStatement: 'LabeledStatement', + LogicalExpression: 'LogicalExpression', + MemberExpression: 'MemberExpression', + MetaProperty: 'MetaProperty', + MethodDefinition: 'MethodDefinition', + NewExpression: 'NewExpression', + ObjectExpression: 'ObjectExpression', + ObjectPattern: 'ObjectPattern', + Program: 'Program', + Property: 'Property', + RestElement: 'RestElement', + ReturnStatement: 'ReturnStatement', + SequenceExpression: 'SequenceExpression', + SpreadElement: 'SpreadElement', + Super: 'Super', + SwitchCase: 'SwitchCase', + SwitchStatement: 'SwitchStatement', + TaggedTemplateExpression: 'TaggedTemplateExpression', + TemplateElement: 'TemplateElement', + TemplateLiteral: 'TemplateLiteral', + ThisExpression: 'ThisExpression', + ThrowStatement: 'ThrowStatement', + TryStatement: 'TryStatement', + UnaryExpression: 'UnaryExpression', + UpdateExpression: 'UpdateExpression', + VariableDeclaration: 'VariableDeclaration', + VariableDeclarator: 'VariableDeclarator', + WhileStatement: 'WhileStatement', + WithStatement: 'WithStatement', + YieldExpression: 'YieldExpression' + }; - function fromCodePoint(cp) { - return (cp < 0x10000) ? String.fromCharCode(cp) : - String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) + - String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023)); - } - function isIdentifierStart(ch) { - return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) - (ch >= 0x41 && ch <= 0x5A) || // A..Z - (ch >= 0x61 && ch <= 0x7A) || // a..z - (ch === 0x5C) || // \ (backslash) - ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch))); - } +/***/ }, +/* 3 */ +/***/ function(module, exports, __webpack_require__) { - function isIdentifierPart(ch) { - return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) - (ch >= 0x41 && ch <= 0x5A) || // A..Z - (ch >= 0x61 && ch <= 0x7A) || // a..z - (ch >= 0x30 && ch <= 0x39) || // 0..9 - (ch === 0x5C) || // \ (backslash) - ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch))); - } + "use strict"; +/* istanbul ignore next */ + var __extends = (this && this.__extends) || (function () { + var extendStatics = Object.setPrototypeOf || + ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || + function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; + return function (d, b) { + extendStatics(d, b); + function __() { this.constructor = d; } + d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); + }; + })(); + Object.defineProperty(exports, "__esModule", { value: true }); + var character_1 = __webpack_require__(4); + var JSXNode = __webpack_require__(5); + var jsx_syntax_1 = __webpack_require__(6); + var Node = __webpack_require__(7); + var parser_1 = __webpack_require__(8); + var token_1 = __webpack_require__(13); + var xhtml_entities_1 = __webpack_require__(14); + token_1.TokenName[100 /* Identifier */] = 'JSXIdentifier'; + token_1.TokenName[101 /* Text */] = 'JSXText'; + // Fully qualified element name, e.g. returns "svg:path" + function getQualifiedElementName(elementName) { + var qualifiedName; + switch (elementName.type) { + case jsx_syntax_1.JSXSyntax.JSXIdentifier: + var id = elementName; + qualifiedName = id.name; + break; + case jsx_syntax_1.JSXSyntax.JSXNamespacedName: + var ns = elementName; + qualifiedName = getQualifiedElementName(ns.namespace) + ':' + + getQualifiedElementName(ns.name); + break; + case jsx_syntax_1.JSXSyntax.JSXMemberExpression: + var expr = elementName; + qualifiedName = getQualifiedElementName(expr.object) + '.' + + getQualifiedElementName(expr.property); + break; + /* istanbul ignore next */ + default: + break; + } + return qualifiedName; + } + var JSXParser = (function (_super) { + __extends(JSXParser, _super); + function JSXParser(code, options, delegate) { + return _super.call(this, code, options, delegate) || this; + } + JSXParser.prototype.parsePrimaryExpression = function () { + return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this); + }; + JSXParser.prototype.startJSX = function () { + // Unwind the scanner before the lookahead token. + this.scanner.index = this.startMarker.index; + this.scanner.lineNumber = this.startMarker.line; + this.scanner.lineStart = this.startMarker.index - this.startMarker.column; + }; + JSXParser.prototype.finishJSX = function () { + // Prime the next lookahead. + this.nextToken(); + }; + JSXParser.prototype.reenterJSX = function () { + this.startJSX(); + this.expectJSX('}'); + // Pop the closing '}' added from the lookahead. + if (this.config.tokens) { + this.tokens.pop(); + } + }; + JSXParser.prototype.createJSXNode = function () { + this.collectComments(); + return { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; + }; + JSXParser.prototype.createJSXChildNode = function () { + return { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; + }; + JSXParser.prototype.scanXHTMLEntity = function (quote) { + var result = '&'; + var valid = true; + var terminated = false; + var numeric = false; + var hex = false; + while (!this.scanner.eof() && valid && !terminated) { + var ch = this.scanner.source[this.scanner.index]; + if (ch === quote) { + break; + } + terminated = (ch === ';'); + result += ch; + ++this.scanner.index; + if (!terminated) { + switch (result.length) { + case 2: + // e.g. '{' + numeric = (ch === '#'); + break; + case 3: + if (numeric) { + // e.g. 'A' + hex = (ch === 'x'); + valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0)); + numeric = numeric && !hex; + } + break; + default: + valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0))); + valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0))); + break; + } + } + } + if (valid && terminated && result.length > 2) { + // e.g. 'A' becomes just '#x41' + var str = result.substr(1, result.length - 2); + if (numeric && str.length > 1) { + result = String.fromCharCode(parseInt(str.substr(1), 10)); + } + else if (hex && str.length > 2) { + result = String.fromCharCode(parseInt('0' + str.substr(1), 16)); + } + else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) { + result = xhtml_entities_1.XHTMLEntities[str]; + } + } + return result; + }; + // Scan the next JSX token. This replaces Scanner#lex when in JSX mode. + JSXParser.prototype.lexJSX = function () { + var cp = this.scanner.source.charCodeAt(this.scanner.index); + // < > / : = { } + if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) { + var value = this.scanner.source[this.scanner.index++]; + return { + type: 7 /* Punctuator */, + value: value, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: this.scanner.index - 1, + end: this.scanner.index + }; + } + // " ' + if (cp === 34 || cp === 39) { + var start = this.scanner.index; + var quote = this.scanner.source[this.scanner.index++]; + var str = ''; + while (!this.scanner.eof()) { + var ch = this.scanner.source[this.scanner.index++]; + if (ch === quote) { + break; + } + else if (ch === '&') { + str += this.scanXHTMLEntity(quote); + } + else { + str += ch; + } + } + return { + type: 8 /* StringLiteral */, + value: str, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + // ... or . + if (cp === 46) { + var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1); + var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2); + var value = (n1 === 46 && n2 === 46) ? '...' : '.'; + var start = this.scanner.index; + this.scanner.index += value.length; + return { + type: 7 /* Punctuator */, + value: value, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + // ` + if (cp === 96) { + // Only placeholder, since it will be rescanned as a real assignment expression. + return { + type: 10 /* Template */, + value: '', + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: this.scanner.index, + end: this.scanner.index + }; + } + // Identifer can not contain backslash (char code 92). + if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) { + var start = this.scanner.index; + ++this.scanner.index; + while (!this.scanner.eof()) { + var ch = this.scanner.source.charCodeAt(this.scanner.index); + if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) { + ++this.scanner.index; + } + else if (ch === 45) { + // Hyphen (char code 45) can be part of an identifier. + ++this.scanner.index; + } + else { + break; + } + } + var id = this.scanner.source.slice(start, this.scanner.index); + return { + type: 100 /* Identifier */, + value: id, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + return this.scanner.lex(); + }; + JSXParser.prototype.nextJSXToken = function () { + this.collectComments(); + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + var token = this.lexJSX(); + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + if (this.config.tokens) { + this.tokens.push(this.convertToken(token)); + } + return token; + }; + JSXParser.prototype.nextJSXText = function () { + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + var start = this.scanner.index; + var text = ''; + while (!this.scanner.eof()) { + var ch = this.scanner.source[this.scanner.index]; + if (ch === '{' || ch === '<') { + break; + } + ++this.scanner.index; + text += ch; + if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) { + ++this.scanner.lineNumber; + if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') { + ++this.scanner.index; + } + this.scanner.lineStart = this.scanner.index; + } + } + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + var token = { + type: 101 /* Text */, + value: text, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + if ((text.length > 0) && this.config.tokens) { + this.tokens.push(this.convertToken(token)); + } + return token; + }; + JSXParser.prototype.peekJSXToken = function () { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.lexJSX(); + this.scanner.restoreState(state); + return next; + }; + // Expect the next JSX token to match the specified punctuator. + // If not, an exception will be thrown. + JSXParser.prototype.expectJSX = function (value) { + var token = this.nextJSXToken(); + if (token.type !== 7 /* Punctuator */ || token.value !== value) { + this.throwUnexpectedToken(token); + } + }; + // Return true if the next JSX token matches the specified punctuator. + JSXParser.prototype.matchJSX = function (value) { + var next = this.peekJSXToken(); + return next.type === 7 /* Punctuator */ && next.value === value; + }; + JSXParser.prototype.parseJSXIdentifier = function () { + var node = this.createJSXNode(); + var token = this.nextJSXToken(); + if (token.type !== 100 /* Identifier */) { + this.throwUnexpectedToken(token); + } + return this.finalize(node, new JSXNode.JSXIdentifier(token.value)); + }; + JSXParser.prototype.parseJSXElementName = function () { + var node = this.createJSXNode(); + var elementName = this.parseJSXIdentifier(); + if (this.matchJSX(':')) { + var namespace = elementName; + this.expectJSX(':'); + var name_1 = this.parseJSXIdentifier(); + elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1)); + } + else if (this.matchJSX('.')) { + while (this.matchJSX('.')) { + var object = elementName; + this.expectJSX('.'); + var property = this.parseJSXIdentifier(); + elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property)); + } + } + return elementName; + }; + JSXParser.prototype.parseJSXAttributeName = function () { + var node = this.createJSXNode(); + var attributeName; + var identifier = this.parseJSXIdentifier(); + if (this.matchJSX(':')) { + var namespace = identifier; + this.expectJSX(':'); + var name_2 = this.parseJSXIdentifier(); + attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2)); + } + else { + attributeName = identifier; + } + return attributeName; + }; + JSXParser.prototype.parseJSXStringLiteralAttribute = function () { + var node = this.createJSXNode(); + var token = this.nextJSXToken(); + if (token.type !== 8 /* StringLiteral */) { + this.throwUnexpectedToken(token); + } + var raw = this.getTokenRaw(token); + return this.finalize(node, new Node.Literal(token.value, raw)); + }; + JSXParser.prototype.parseJSXExpressionAttribute = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + this.finishJSX(); + if (this.match('}')) { + this.tolerateError('JSX attributes must only be assigned a non-empty expression'); + } + var expression = this.parseAssignmentExpression(); + this.reenterJSX(); + return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); + }; + JSXParser.prototype.parseJSXAttributeValue = function () { + return this.matchJSX('{') ? this.parseJSXExpressionAttribute() : + this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute(); + }; + JSXParser.prototype.parseJSXNameValueAttribute = function () { + var node = this.createJSXNode(); + var name = this.parseJSXAttributeName(); + var value = null; + if (this.matchJSX('=')) { + this.expectJSX('='); + value = this.parseJSXAttributeValue(); + } + return this.finalize(node, new JSXNode.JSXAttribute(name, value)); + }; + JSXParser.prototype.parseJSXSpreadAttribute = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + this.expectJSX('...'); + this.finishJSX(); + var argument = this.parseAssignmentExpression(); + this.reenterJSX(); + return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument)); + }; + JSXParser.prototype.parseJSXAttributes = function () { + var attributes = []; + while (!this.matchJSX('/') && !this.matchJSX('>')) { + var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() : + this.parseJSXNameValueAttribute(); + attributes.push(attribute); + } + return attributes; + }; + JSXParser.prototype.parseJSXOpeningElement = function () { + var node = this.createJSXNode(); + this.expectJSX('<'); + var name = this.parseJSXElementName(); + var attributes = this.parseJSXAttributes(); + var selfClosing = this.matchJSX('/'); + if (selfClosing) { + this.expectJSX('/'); + } + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); + }; + JSXParser.prototype.parseJSXBoundaryElement = function () { + var node = this.createJSXNode(); + this.expectJSX('<'); + if (this.matchJSX('/')) { + this.expectJSX('/'); + var name_3 = this.parseJSXElementName(); + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXClosingElement(name_3)); + } + var name = this.parseJSXElementName(); + var attributes = this.parseJSXAttributes(); + var selfClosing = this.matchJSX('/'); + if (selfClosing) { + this.expectJSX('/'); + } + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); + }; + JSXParser.prototype.parseJSXEmptyExpression = function () { + var node = this.createJSXChildNode(); + this.collectComments(); + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + return this.finalize(node, new JSXNode.JSXEmptyExpression()); + }; + JSXParser.prototype.parseJSXExpressionContainer = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + var expression; + if (this.matchJSX('}')) { + expression = this.parseJSXEmptyExpression(); + this.expectJSX('}'); + } + else { + this.finishJSX(); + expression = this.parseAssignmentExpression(); + this.reenterJSX(); + } + return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); + }; + JSXParser.prototype.parseJSXChildren = function () { + var children = []; + while (!this.scanner.eof()) { + var node = this.createJSXChildNode(); + var token = this.nextJSXText(); + if (token.start < token.end) { + var raw = this.getTokenRaw(token); + var child = this.finalize(node, new JSXNode.JSXText(token.value, raw)); + children.push(child); + } + if (this.scanner.source[this.scanner.index] === '{') { + var container = this.parseJSXExpressionContainer(); + children.push(container); + } + else { + break; + } + } + return children; + }; + JSXParser.prototype.parseComplexJSXElement = function (el) { + var stack = []; + while (!this.scanner.eof()) { + el.children = el.children.concat(this.parseJSXChildren()); + var node = this.createJSXChildNode(); + var element = this.parseJSXBoundaryElement(); + if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) { + var opening = element; + if (opening.selfClosing) { + var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null)); + el.children.push(child); + } + else { + stack.push(el); + el = { node: node, opening: opening, closing: null, children: [] }; + } + } + if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) { + el.closing = element; + var open_1 = getQualifiedElementName(el.opening.name); + var close_1 = getQualifiedElementName(el.closing.name); + if (open_1 !== close_1) { + this.tolerateError('Expected corresponding JSX closing tag for %0', open_1); + } + if (stack.length > 0) { + var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing)); + el = stack[stack.length - 1]; + el.children.push(child); + stack.pop(); + } + else { + break; + } + } + } + return el; + }; + JSXParser.prototype.parseJSXElement = function () { + var node = this.createJSXNode(); + var opening = this.parseJSXOpeningElement(); + var children = []; + var closing = null; + if (!opening.selfClosing) { + var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children }); + children = el.children; + closing = el.closing; + } + return this.finalize(node, new JSXNode.JSXElement(opening, children, closing)); + }; + JSXParser.prototype.parseJSXRoot = function () { + // Pop the opening '<' added from the lookahead. + if (this.config.tokens) { + this.tokens.pop(); + } + this.startJSX(); + var element = this.parseJSXElement(); + this.finishJSX(); + return element; + }; + JSXParser.prototype.isStartOfExpression = function () { + return _super.prototype.isStartOfExpression.call(this) || this.match('<'); + }; + return JSXParser; + }(parser_1.Parser)); + exports.JSXParser = JSXParser; - // ECMA-262 11.6.2.2 Future Reserved Words - function isFutureReservedWord(id) { - switch (id) { - case 'enum': - case 'export': - case 'import': - case 'super': - return true; - default: - return false; - } - } +/***/ }, +/* 4 */ +/***/ function(module, exports) { - function isStrictModeReservedWord(id) { - switch (id) { - case 'implements': - case 'interface': - case 'package': - case 'private': - case 'protected': - case 'public': - case 'static': - case 'yield': - case 'let': - return true; - default: - return false; - } - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + // See also tools/generate-unicode-regex.js. + var Regex = { + // Unicode v8.0.0 NonAsciiIdentifierStart: + NonAsciiIdentifierStart: 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+ // Unicode v8.0.0 NonAsciiIdentifierPart: + NonAsciiIdentifierPart: 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+ }; + exports.Character = { + /* tslint:disable:no-bitwise */ + fromCodePoint: function (cp) { + return (cp < 0x10000) ? String.fromCharCode(cp) : + String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) + + String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023)); + }, + // https://tc39.github.io/ecma262/#sec-white-space + isWhiteSpace: function (cp) { + return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) || + (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0); + }, + // https://tc39.github.io/ecma262/#sec-line-terminators + isLineTerminator: function (cp) { + return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029); + }, + // https://tc39.github.io/ecma262/#sec-names-and-keywords + isIdentifierStart: function (cp) { + return (cp === 0x24) || (cp === 0x5F) || + (cp >= 0x41 && cp <= 0x5A) || + (cp >= 0x61 && cp <= 0x7A) || + (cp === 0x5C) || + ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp))); + }, + isIdentifierPart: function (cp) { + return (cp === 0x24) || (cp === 0x5F) || + (cp >= 0x41 && cp <= 0x5A) || + (cp >= 0x61 && cp <= 0x7A) || + (cp >= 0x30 && cp <= 0x39) || + (cp === 0x5C) || + ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp))); + }, + // https://tc39.github.io/ecma262/#sec-literals-numeric-literals + isDecimalDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x39); // 0..9 + }, + isHexDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x39) || + (cp >= 0x41 && cp <= 0x46) || + (cp >= 0x61 && cp <= 0x66); // a..f + }, + isOctalDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x37); // 0..7 + } + }; - function isRestrictedWord(id) { - return id === 'eval' || id === 'arguments'; - } - // ECMA-262 11.6.2.1 Keywords - - function isKeyword(id) { - switch (id.length) { - case 2: - return (id === 'if') || (id === 'in') || (id === 'do'); - case 3: - return (id === 'var') || (id === 'for') || (id === 'new') || - (id === 'try') || (id === 'let'); - case 4: - return (id === 'this') || (id === 'else') || (id === 'case') || - (id === 'void') || (id === 'with') || (id === 'enum'); - case 5: - return (id === 'while') || (id === 'break') || (id === 'catch') || - (id === 'throw') || (id === 'const') || (id === 'yield') || - (id === 'class') || (id === 'super'); - case 6: - return (id === 'return') || (id === 'typeof') || (id === 'delete') || - (id === 'switch') || (id === 'export') || (id === 'import'); - case 7: - return (id === 'default') || (id === 'finally') || (id === 'extends'); - case 8: - return (id === 'function') || (id === 'continue') || (id === 'debugger'); - case 10: - return (id === 'instanceof'); - default: - return false; - } - } +/***/ }, +/* 5 */ +/***/ function(module, exports, __webpack_require__) { - // ECMA-262 11.4 Comments + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var jsx_syntax_1 = __webpack_require__(6); + /* tslint:disable:max-classes-per-file */ + var JSXClosingElement = (function () { + function JSXClosingElement(name) { + this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement; + this.name = name; + } + return JSXClosingElement; + }()); + exports.JSXClosingElement = JSXClosingElement; + var JSXElement = (function () { + function JSXElement(openingElement, children, closingElement) { + this.type = jsx_syntax_1.JSXSyntax.JSXElement; + this.openingElement = openingElement; + this.children = children; + this.closingElement = closingElement; + } + return JSXElement; + }()); + exports.JSXElement = JSXElement; + var JSXEmptyExpression = (function () { + function JSXEmptyExpression() { + this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression; + } + return JSXEmptyExpression; + }()); + exports.JSXEmptyExpression = JSXEmptyExpression; + var JSXExpressionContainer = (function () { + function JSXExpressionContainer(expression) { + this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer; + this.expression = expression; + } + return JSXExpressionContainer; + }()); + exports.JSXExpressionContainer = JSXExpressionContainer; + var JSXIdentifier = (function () { + function JSXIdentifier(name) { + this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier; + this.name = name; + } + return JSXIdentifier; + }()); + exports.JSXIdentifier = JSXIdentifier; + var JSXMemberExpression = (function () { + function JSXMemberExpression(object, property) { + this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression; + this.object = object; + this.property = property; + } + return JSXMemberExpression; + }()); + exports.JSXMemberExpression = JSXMemberExpression; + var JSXAttribute = (function () { + function JSXAttribute(name, value) { + this.type = jsx_syntax_1.JSXSyntax.JSXAttribute; + this.name = name; + this.value = value; + } + return JSXAttribute; + }()); + exports.JSXAttribute = JSXAttribute; + var JSXNamespacedName = (function () { + function JSXNamespacedName(namespace, name) { + this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName; + this.namespace = namespace; + this.name = name; + } + return JSXNamespacedName; + }()); + exports.JSXNamespacedName = JSXNamespacedName; + var JSXOpeningElement = (function () { + function JSXOpeningElement(name, selfClosing, attributes) { + this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement; + this.name = name; + this.selfClosing = selfClosing; + this.attributes = attributes; + } + return JSXOpeningElement; + }()); + exports.JSXOpeningElement = JSXOpeningElement; + var JSXSpreadAttribute = (function () { + function JSXSpreadAttribute(argument) { + this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute; + this.argument = argument; + } + return JSXSpreadAttribute; + }()); + exports.JSXSpreadAttribute = JSXSpreadAttribute; + var JSXText = (function () { + function JSXText(value, raw) { + this.type = jsx_syntax_1.JSXSyntax.JSXText; + this.value = value; + this.raw = raw; + } + return JSXText; + }()); + exports.JSXText = JSXText; - function addComment(type, value, start, end, loc) { - var comment; - assert(typeof start === 'number', 'Comment must have valid position'); +/***/ }, +/* 6 */ +/***/ function(module, exports) { - state.lastCommentStart = start; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + exports.JSXSyntax = { + JSXAttribute: 'JSXAttribute', + JSXClosingElement: 'JSXClosingElement', + JSXElement: 'JSXElement', + JSXEmptyExpression: 'JSXEmptyExpression', + JSXExpressionContainer: 'JSXExpressionContainer', + JSXIdentifier: 'JSXIdentifier', + JSXMemberExpression: 'JSXMemberExpression', + JSXNamespacedName: 'JSXNamespacedName', + JSXOpeningElement: 'JSXOpeningElement', + JSXSpreadAttribute: 'JSXSpreadAttribute', + JSXText: 'JSXText' + }; - comment = { - type: type, - value: value - }; - if (extra.range) { - comment.range = [start, end]; - } - if (extra.loc) { - comment.loc = loc; - } - extra.comments.push(comment); - if (extra.attachComment) { - extra.leadingComments.push(comment); - extra.trailingComments.push(comment); - } - if (extra.tokenize) { - comment.type = comment.type + 'Comment'; - if (extra.delegate) { - comment = extra.delegate(comment); - } - extra.tokens.push(comment); - } - } - function skipSingleLineComment(offset) { - var start, loc, ch, comment; - - start = index - offset; - loc = { - start: { - line: lineNumber, - column: index - lineStart - offset - } - }; - - while (index < length) { - ch = source.charCodeAt(index); - ++index; - if (isLineTerminator(ch)) { - hasLineTerminator = true; - if (extra.comments) { - comment = source.slice(start + offset, index - 1); - loc.end = { - line: lineNumber, - column: index - lineStart - 1 - }; - addComment('Line', comment, start, index - 1, loc); - } - if (ch === 13 && source.charCodeAt(index) === 10) { - ++index; - } - ++lineNumber; - lineStart = index; - return; - } - } - - if (extra.comments) { - comment = source.slice(start + offset, index); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - addComment('Line', comment, start, index, loc); - } - } - - function skipMultiLineComment() { - var start, loc, ch, comment; - - if (extra.comments) { - start = index - 2; - loc = { - start: { - line: lineNumber, - column: index - lineStart - 2 - } - }; - } - - while (index < length) { - ch = source.charCodeAt(index); - if (isLineTerminator(ch)) { - if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) { - ++index; - } - hasLineTerminator = true; - ++lineNumber; - ++index; - lineStart = index; - } else if (ch === 0x2A) { - // Block comment ends with '*/'. - if (source.charCodeAt(index + 1) === 0x2F) { - ++index; - ++index; - if (extra.comments) { - comment = source.slice(start + 2, index - 2); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - addComment('Block', comment, start, index, loc); - } - return; - } - ++index; - } else { - ++index; - } - } - - // Ran off the end of the file - the whole thing is a comment - if (extra.comments) { - loc.end = { - line: lineNumber, - column: index - lineStart - }; - comment = source.slice(start + 2, index); - addComment('Block', comment, start, index, loc); - } - tolerateUnexpectedToken(); - } - - function skipComment() { - var ch, start; - hasLineTerminator = false; - - start = (index === 0); - while (index < length) { - ch = source.charCodeAt(index); - - if (isWhiteSpace(ch)) { - ++index; - } else if (isLineTerminator(ch)) { - hasLineTerminator = true; - ++index; - if (ch === 0x0D && source.charCodeAt(index) === 0x0A) { - ++index; - } - ++lineNumber; - lineStart = index; - start = true; - } else if (ch === 0x2F) { // U+002F is '/' - ch = source.charCodeAt(index + 1); - if (ch === 0x2F) { - ++index; - ++index; - skipSingleLineComment(2); - start = true; - } else if (ch === 0x2A) { // U+002A is '*' - ++index; - ++index; - skipMultiLineComment(); - } else { - break; - } - } else if (start && ch === 0x2D) { // U+002D is '-' - // U+003E is '>' - if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) { - // '-->' is a single-line comment - index += 3; - skipSingleLineComment(3); - } else { - break; - } - } else if (ch === 0x3C) { // U+003C is '<' - if (source.slice(index + 1, index + 4) === '!--') { - ++index; // `<` - ++index; // `!` - ++index; // `-` - ++index; // `-` - skipSingleLineComment(4); - } else { - break; - } - } else { - break; - } - } - } - - function scanHexEscape(prefix) { - var i, len, ch, code = 0; - - len = (prefix === 'u') ? 4 : 2; - for (i = 0; i < len; ++i) { - if (index < length && isHexDigit(source[index])) { - ch = source[index++]; - code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); - } else { - return ''; - } - } - return String.fromCharCode(code); - } - - function scanUnicodeCodePointEscape() { - var ch, code; - - ch = source[index]; - code = 0; - - // At least, one hex digit is required. - if (ch === '}') { - throwUnexpectedToken(); - } - - while (index < length) { - ch = source[index++]; - if (!isHexDigit(ch)) { - break; - } - code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); - } - - if (code > 0x10FFFF || ch !== '}') { - throwUnexpectedToken(); - } - - return fromCodePoint(code); - } - - function codePointAt(i) { - var cp, first, second; - - cp = source.charCodeAt(i); - if (cp >= 0xD800 && cp <= 0xDBFF) { - second = source.charCodeAt(i + 1); - if (second >= 0xDC00 && second <= 0xDFFF) { - first = cp; - cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; - } - } - - return cp; - } - - function getComplexIdentifier() { - var cp, ch, id; - - cp = codePointAt(index); - id = fromCodePoint(cp); - index += id.length; - - // '\u' (U+005C, U+0075) denotes an escaped character. - if (cp === 0x5C) { - if (source.charCodeAt(index) !== 0x75) { - throwUnexpectedToken(); - } - ++index; - if (source[index] === '{') { - ++index; - ch = scanUnicodeCodePointEscape(); - } else { - ch = scanHexEscape('u'); - cp = ch.charCodeAt(0); - if (!ch || ch === '\\' || !isIdentifierStart(cp)) { - throwUnexpectedToken(); - } - } - id = ch; - } - - while (index < length) { - cp = codePointAt(index); - if (!isIdentifierPart(cp)) { - break; - } - ch = fromCodePoint(cp); - id += ch; - index += ch.length; - - // '\u' (U+005C, U+0075) denotes an escaped character. - if (cp === 0x5C) { - id = id.substr(0, id.length - 1); - if (source.charCodeAt(index) !== 0x75) { - throwUnexpectedToken(); - } - ++index; - if (source[index] === '{') { - ++index; - ch = scanUnicodeCodePointEscape(); - } else { - ch = scanHexEscape('u'); - cp = ch.charCodeAt(0); - if (!ch || ch === '\\' || !isIdentifierPart(cp)) { - throwUnexpectedToken(); - } - } - id += ch; - } - } - - return id; - } - - function getIdentifier() { - var start, ch; - - start = index++; - while (index < length) { - ch = source.charCodeAt(index); - if (ch === 0x5C) { - // Blackslash (U+005C) marks Unicode escape sequence. - index = start; - return getComplexIdentifier(); - } else if (ch >= 0xD800 && ch < 0xDFFF) { - // Need to handle surrogate pairs. - index = start; - return getComplexIdentifier(); - } - if (isIdentifierPart(ch)) { - ++index; - } else { - break; - } - } - - return source.slice(start, index); - } - - function scanIdentifier() { - var start, id, type; - - start = index; - - // Backslash (U+005C) starts an escaped character. - id = (source.charCodeAt(index) === 0x5C) ? getComplexIdentifier() : getIdentifier(); - - // There is no keyword or literal with only one character. - // Thus, it must be an identifier. - if (id.length === 1) { - type = Token.Identifier; - } else if (isKeyword(id)) { - type = Token.Keyword; - } else if (id === 'null') { - type = Token.NullLiteral; - } else if (id === 'true' || id === 'false') { - type = Token.BooleanLiteral; - } else { - type = Token.Identifier; - } - - return { - type: type, - value: id, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } +/***/ }, +/* 7 */ +/***/ function(module, exports, __webpack_require__) { + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var syntax_1 = __webpack_require__(2); + /* tslint:disable:max-classes-per-file */ + var ArrayExpression = (function () { + function ArrayExpression(elements) { + this.type = syntax_1.Syntax.ArrayExpression; + this.elements = elements; + } + return ArrayExpression; + }()); + exports.ArrayExpression = ArrayExpression; + var ArrayPattern = (function () { + function ArrayPattern(elements) { + this.type = syntax_1.Syntax.ArrayPattern; + this.elements = elements; + } + return ArrayPattern; + }()); + exports.ArrayPattern = ArrayPattern; + var ArrowFunctionExpression = (function () { + function ArrowFunctionExpression(params, body, expression) { + this.type = syntax_1.Syntax.ArrowFunctionExpression; + this.id = null; + this.params = params; + this.body = body; + this.generator = false; + this.expression = expression; + this.async = false; + } + return ArrowFunctionExpression; + }()); + exports.ArrowFunctionExpression = ArrowFunctionExpression; + var AssignmentExpression = (function () { + function AssignmentExpression(operator, left, right) { + this.type = syntax_1.Syntax.AssignmentExpression; + this.operator = operator; + this.left = left; + this.right = right; + } + return AssignmentExpression; + }()); + exports.AssignmentExpression = AssignmentExpression; + var AssignmentPattern = (function () { + function AssignmentPattern(left, right) { + this.type = syntax_1.Syntax.AssignmentPattern; + this.left = left; + this.right = right; + } + return AssignmentPattern; + }()); + exports.AssignmentPattern = AssignmentPattern; + var AsyncArrowFunctionExpression = (function () { + function AsyncArrowFunctionExpression(params, body, expression) { + this.type = syntax_1.Syntax.ArrowFunctionExpression; + this.id = null; + this.params = params; + this.body = body; + this.generator = false; + this.expression = expression; + this.async = true; + } + return AsyncArrowFunctionExpression; + }()); + exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression; + var AsyncFunctionDeclaration = (function () { + function AsyncFunctionDeclaration(id, params, body) { + this.type = syntax_1.Syntax.FunctionDeclaration; + this.id = id; + this.params = params; + this.body = body; + this.generator = false; + this.expression = false; + this.async = true; + } + return AsyncFunctionDeclaration; + }()); + exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration; + var AsyncFunctionExpression = (function () { + function AsyncFunctionExpression(id, params, body) { + this.type = syntax_1.Syntax.FunctionExpression; + this.id = id; + this.params = params; + this.body = body; + this.generator = false; + this.expression = false; + this.async = true; + } + return AsyncFunctionExpression; + }()); + exports.AsyncFunctionExpression = AsyncFunctionExpression; + var AwaitExpression = (function () { + function AwaitExpression(argument) { + this.type = syntax_1.Syntax.AwaitExpression; + this.argument = argument; + } + return AwaitExpression; + }()); + exports.AwaitExpression = AwaitExpression; + var BinaryExpression = (function () { + function BinaryExpression(operator, left, right) { + var logical = (operator === '||' || operator === '&&'); + this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression; + this.operator = operator; + this.left = left; + this.right = right; + } + return BinaryExpression; + }()); + exports.BinaryExpression = BinaryExpression; + var BlockStatement = (function () { + function BlockStatement(body) { + this.type = syntax_1.Syntax.BlockStatement; + this.body = body; + } + return BlockStatement; + }()); + exports.BlockStatement = BlockStatement; + var BreakStatement = (function () { + function BreakStatement(label) { + this.type = syntax_1.Syntax.BreakStatement; + this.label = label; + } + return BreakStatement; + }()); + exports.BreakStatement = BreakStatement; + var CallExpression = (function () { + function CallExpression(callee, args) { + this.type = syntax_1.Syntax.CallExpression; + this.callee = callee; + this.arguments = args; + } + return CallExpression; + }()); + exports.CallExpression = CallExpression; + var CatchClause = (function () { + function CatchClause(param, body) { + this.type = syntax_1.Syntax.CatchClause; + this.param = param; + this.body = body; + } + return CatchClause; + }()); + exports.CatchClause = CatchClause; + var ClassBody = (function () { + function ClassBody(body) { + this.type = syntax_1.Syntax.ClassBody; + this.body = body; + } + return ClassBody; + }()); + exports.ClassBody = ClassBody; + var ClassDeclaration = (function () { + function ClassDeclaration(id, superClass, body) { + this.type = syntax_1.Syntax.ClassDeclaration; + this.id = id; + this.superClass = superClass; + this.body = body; + } + return ClassDeclaration; + }()); + exports.ClassDeclaration = ClassDeclaration; + var ClassExpression = (function () { + function ClassExpression(id, superClass, body) { + this.type = syntax_1.Syntax.ClassExpression; + this.id = id; + this.superClass = superClass; + this.body = body; + } + return ClassExpression; + }()); + exports.ClassExpression = ClassExpression; + var ComputedMemberExpression = (function () { + function ComputedMemberExpression(object, property) { + this.type = syntax_1.Syntax.MemberExpression; + this.computed = true; + this.object = object; + this.property = property; + } + return ComputedMemberExpression; + }()); + exports.ComputedMemberExpression = ComputedMemberExpression; + var ConditionalExpression = (function () { + function ConditionalExpression(test, consequent, alternate) { + this.type = syntax_1.Syntax.ConditionalExpression; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + } + return ConditionalExpression; + }()); + exports.ConditionalExpression = ConditionalExpression; + var ContinueStatement = (function () { + function ContinueStatement(label) { + this.type = syntax_1.Syntax.ContinueStatement; + this.label = label; + } + return ContinueStatement; + }()); + exports.ContinueStatement = ContinueStatement; + var DebuggerStatement = (function () { + function DebuggerStatement() { + this.type = syntax_1.Syntax.DebuggerStatement; + } + return DebuggerStatement; + }()); + exports.DebuggerStatement = DebuggerStatement; + var Directive = (function () { + function Directive(expression, directive) { + this.type = syntax_1.Syntax.ExpressionStatement; + this.expression = expression; + this.directive = directive; + } + return Directive; + }()); + exports.Directive = Directive; + var DoWhileStatement = (function () { + function DoWhileStatement(body, test) { + this.type = syntax_1.Syntax.DoWhileStatement; + this.body = body; + this.test = test; + } + return DoWhileStatement; + }()); + exports.DoWhileStatement = DoWhileStatement; + var EmptyStatement = (function () { + function EmptyStatement() { + this.type = syntax_1.Syntax.EmptyStatement; + } + return EmptyStatement; + }()); + exports.EmptyStatement = EmptyStatement; + var ExportAllDeclaration = (function () { + function ExportAllDeclaration(source) { + this.type = syntax_1.Syntax.ExportAllDeclaration; + this.source = source; + } + return ExportAllDeclaration; + }()); + exports.ExportAllDeclaration = ExportAllDeclaration; + var ExportDefaultDeclaration = (function () { + function ExportDefaultDeclaration(declaration) { + this.type = syntax_1.Syntax.ExportDefaultDeclaration; + this.declaration = declaration; + } + return ExportDefaultDeclaration; + }()); + exports.ExportDefaultDeclaration = ExportDefaultDeclaration; + var ExportNamedDeclaration = (function () { + function ExportNamedDeclaration(declaration, specifiers, source) { + this.type = syntax_1.Syntax.ExportNamedDeclaration; + this.declaration = declaration; + this.specifiers = specifiers; + this.source = source; + } + return ExportNamedDeclaration; + }()); + exports.ExportNamedDeclaration = ExportNamedDeclaration; + var ExportSpecifier = (function () { + function ExportSpecifier(local, exported) { + this.type = syntax_1.Syntax.ExportSpecifier; + this.exported = exported; + this.local = local; + } + return ExportSpecifier; + }()); + exports.ExportSpecifier = ExportSpecifier; + var ExpressionStatement = (function () { + function ExpressionStatement(expression) { + this.type = syntax_1.Syntax.ExpressionStatement; + this.expression = expression; + } + return ExpressionStatement; + }()); + exports.ExpressionStatement = ExpressionStatement; + var ForInStatement = (function () { + function ForInStatement(left, right, body) { + this.type = syntax_1.Syntax.ForInStatement; + this.left = left; + this.right = right; + this.body = body; + this.each = false; + } + return ForInStatement; + }()); + exports.ForInStatement = ForInStatement; + var ForOfStatement = (function () { + function ForOfStatement(left, right, body) { + this.type = syntax_1.Syntax.ForOfStatement; + this.left = left; + this.right = right; + this.body = body; + } + return ForOfStatement; + }()); + exports.ForOfStatement = ForOfStatement; + var ForStatement = (function () { + function ForStatement(init, test, update, body) { + this.type = syntax_1.Syntax.ForStatement; + this.init = init; + this.test = test; + this.update = update; + this.body = body; + } + return ForStatement; + }()); + exports.ForStatement = ForStatement; + var FunctionDeclaration = (function () { + function FunctionDeclaration(id, params, body, generator) { + this.type = syntax_1.Syntax.FunctionDeclaration; + this.id = id; + this.params = params; + this.body = body; + this.generator = generator; + this.expression = false; + this.async = false; + } + return FunctionDeclaration; + }()); + exports.FunctionDeclaration = FunctionDeclaration; + var FunctionExpression = (function () { + function FunctionExpression(id, params, body, generator) { + this.type = syntax_1.Syntax.FunctionExpression; + this.id = id; + this.params = params; + this.body = body; + this.generator = generator; + this.expression = false; + this.async = false; + } + return FunctionExpression; + }()); + exports.FunctionExpression = FunctionExpression; + var Identifier = (function () { + function Identifier(name) { + this.type = syntax_1.Syntax.Identifier; + this.name = name; + } + return Identifier; + }()); + exports.Identifier = Identifier; + var IfStatement = (function () { + function IfStatement(test, consequent, alternate) { + this.type = syntax_1.Syntax.IfStatement; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + } + return IfStatement; + }()); + exports.IfStatement = IfStatement; + var ImportDeclaration = (function () { + function ImportDeclaration(specifiers, source) { + this.type = syntax_1.Syntax.ImportDeclaration; + this.specifiers = specifiers; + this.source = source; + } + return ImportDeclaration; + }()); + exports.ImportDeclaration = ImportDeclaration; + var ImportDefaultSpecifier = (function () { + function ImportDefaultSpecifier(local) { + this.type = syntax_1.Syntax.ImportDefaultSpecifier; + this.local = local; + } + return ImportDefaultSpecifier; + }()); + exports.ImportDefaultSpecifier = ImportDefaultSpecifier; + var ImportNamespaceSpecifier = (function () { + function ImportNamespaceSpecifier(local) { + this.type = syntax_1.Syntax.ImportNamespaceSpecifier; + this.local = local; + } + return ImportNamespaceSpecifier; + }()); + exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier; + var ImportSpecifier = (function () { + function ImportSpecifier(local, imported) { + this.type = syntax_1.Syntax.ImportSpecifier; + this.local = local; + this.imported = imported; + } + return ImportSpecifier; + }()); + exports.ImportSpecifier = ImportSpecifier; + var LabeledStatement = (function () { + function LabeledStatement(label, body) { + this.type = syntax_1.Syntax.LabeledStatement; + this.label = label; + this.body = body; + } + return LabeledStatement; + }()); + exports.LabeledStatement = LabeledStatement; + var Literal = (function () { + function Literal(value, raw) { + this.type = syntax_1.Syntax.Literal; + this.value = value; + this.raw = raw; + } + return Literal; + }()); + exports.Literal = Literal; + var MetaProperty = (function () { + function MetaProperty(meta, property) { + this.type = syntax_1.Syntax.MetaProperty; + this.meta = meta; + this.property = property; + } + return MetaProperty; + }()); + exports.MetaProperty = MetaProperty; + var MethodDefinition = (function () { + function MethodDefinition(key, computed, value, kind, isStatic) { + this.type = syntax_1.Syntax.MethodDefinition; + this.key = key; + this.computed = computed; + this.value = value; + this.kind = kind; + this.static = isStatic; + } + return MethodDefinition; + }()); + exports.MethodDefinition = MethodDefinition; + var Module = (function () { + function Module(body) { + this.type = syntax_1.Syntax.Program; + this.body = body; + this.sourceType = 'module'; + } + return Module; + }()); + exports.Module = Module; + var NewExpression = (function () { + function NewExpression(callee, args) { + this.type = syntax_1.Syntax.NewExpression; + this.callee = callee; + this.arguments = args; + } + return NewExpression; + }()); + exports.NewExpression = NewExpression; + var ObjectExpression = (function () { + function ObjectExpression(properties) { + this.type = syntax_1.Syntax.ObjectExpression; + this.properties = properties; + } + return ObjectExpression; + }()); + exports.ObjectExpression = ObjectExpression; + var ObjectPattern = (function () { + function ObjectPattern(properties) { + this.type = syntax_1.Syntax.ObjectPattern; + this.properties = properties; + } + return ObjectPattern; + }()); + exports.ObjectPattern = ObjectPattern; + var Property = (function () { + function Property(kind, key, computed, value, method, shorthand) { + this.type = syntax_1.Syntax.Property; + this.key = key; + this.computed = computed; + this.value = value; + this.kind = kind; + this.method = method; + this.shorthand = shorthand; + } + return Property; + }()); + exports.Property = Property; + var RegexLiteral = (function () { + function RegexLiteral(value, raw, pattern, flags) { + this.type = syntax_1.Syntax.Literal; + this.value = value; + this.raw = raw; + this.regex = { pattern: pattern, flags: flags }; + } + return RegexLiteral; + }()); + exports.RegexLiteral = RegexLiteral; + var RestElement = (function () { + function RestElement(argument) { + this.type = syntax_1.Syntax.RestElement; + this.argument = argument; + } + return RestElement; + }()); + exports.RestElement = RestElement; + var ReturnStatement = (function () { + function ReturnStatement(argument) { + this.type = syntax_1.Syntax.ReturnStatement; + this.argument = argument; + } + return ReturnStatement; + }()); + exports.ReturnStatement = ReturnStatement; + var Script = (function () { + function Script(body) { + this.type = syntax_1.Syntax.Program; + this.body = body; + this.sourceType = 'script'; + } + return Script; + }()); + exports.Script = Script; + var SequenceExpression = (function () { + function SequenceExpression(expressions) { + this.type = syntax_1.Syntax.SequenceExpression; + this.expressions = expressions; + } + return SequenceExpression; + }()); + exports.SequenceExpression = SequenceExpression; + var SpreadElement = (function () { + function SpreadElement(argument) { + this.type = syntax_1.Syntax.SpreadElement; + this.argument = argument; + } + return SpreadElement; + }()); + exports.SpreadElement = SpreadElement; + var StaticMemberExpression = (function () { + function StaticMemberExpression(object, property) { + this.type = syntax_1.Syntax.MemberExpression; + this.computed = false; + this.object = object; + this.property = property; + } + return StaticMemberExpression; + }()); + exports.StaticMemberExpression = StaticMemberExpression; + var Super = (function () { + function Super() { + this.type = syntax_1.Syntax.Super; + } + return Super; + }()); + exports.Super = Super; + var SwitchCase = (function () { + function SwitchCase(test, consequent) { + this.type = syntax_1.Syntax.SwitchCase; + this.test = test; + this.consequent = consequent; + } + return SwitchCase; + }()); + exports.SwitchCase = SwitchCase; + var SwitchStatement = (function () { + function SwitchStatement(discriminant, cases) { + this.type = syntax_1.Syntax.SwitchStatement; + this.discriminant = discriminant; + this.cases = cases; + } + return SwitchStatement; + }()); + exports.SwitchStatement = SwitchStatement; + var TaggedTemplateExpression = (function () { + function TaggedTemplateExpression(tag, quasi) { + this.type = syntax_1.Syntax.TaggedTemplateExpression; + this.tag = tag; + this.quasi = quasi; + } + return TaggedTemplateExpression; + }()); + exports.TaggedTemplateExpression = TaggedTemplateExpression; + var TemplateElement = (function () { + function TemplateElement(value, tail) { + this.type = syntax_1.Syntax.TemplateElement; + this.value = value; + this.tail = tail; + } + return TemplateElement; + }()); + exports.TemplateElement = TemplateElement; + var TemplateLiteral = (function () { + function TemplateLiteral(quasis, expressions) { + this.type = syntax_1.Syntax.TemplateLiteral; + this.quasis = quasis; + this.expressions = expressions; + } + return TemplateLiteral; + }()); + exports.TemplateLiteral = TemplateLiteral; + var ThisExpression = (function () { + function ThisExpression() { + this.type = syntax_1.Syntax.ThisExpression; + } + return ThisExpression; + }()); + exports.ThisExpression = ThisExpression; + var ThrowStatement = (function () { + function ThrowStatement(argument) { + this.type = syntax_1.Syntax.ThrowStatement; + this.argument = argument; + } + return ThrowStatement; + }()); + exports.ThrowStatement = ThrowStatement; + var TryStatement = (function () { + function TryStatement(block, handler, finalizer) { + this.type = syntax_1.Syntax.TryStatement; + this.block = block; + this.handler = handler; + this.finalizer = finalizer; + } + return TryStatement; + }()); + exports.TryStatement = TryStatement; + var UnaryExpression = (function () { + function UnaryExpression(operator, argument) { + this.type = syntax_1.Syntax.UnaryExpression; + this.operator = operator; + this.argument = argument; + this.prefix = true; + } + return UnaryExpression; + }()); + exports.UnaryExpression = UnaryExpression; + var UpdateExpression = (function () { + function UpdateExpression(operator, argument, prefix) { + this.type = syntax_1.Syntax.UpdateExpression; + this.operator = operator; + this.argument = argument; + this.prefix = prefix; + } + return UpdateExpression; + }()); + exports.UpdateExpression = UpdateExpression; + var VariableDeclaration = (function () { + function VariableDeclaration(declarations, kind) { + this.type = syntax_1.Syntax.VariableDeclaration; + this.declarations = declarations; + this.kind = kind; + } + return VariableDeclaration; + }()); + exports.VariableDeclaration = VariableDeclaration; + var VariableDeclarator = (function () { + function VariableDeclarator(id, init) { + this.type = syntax_1.Syntax.VariableDeclarator; + this.id = id; + this.init = init; + } + return VariableDeclarator; + }()); + exports.VariableDeclarator = VariableDeclarator; + var WhileStatement = (function () { + function WhileStatement(test, body) { + this.type = syntax_1.Syntax.WhileStatement; + this.test = test; + this.body = body; + } + return WhileStatement; + }()); + exports.WhileStatement = WhileStatement; + var WithStatement = (function () { + function WithStatement(object, body) { + this.type = syntax_1.Syntax.WithStatement; + this.object = object; + this.body = body; + } + return WithStatement; + }()); + exports.WithStatement = WithStatement; + var YieldExpression = (function () { + function YieldExpression(argument, delegate) { + this.type = syntax_1.Syntax.YieldExpression; + this.argument = argument; + this.delegate = delegate; + } + return YieldExpression; + }()); + exports.YieldExpression = YieldExpression; - // ECMA-262 11.7 Punctuators - function scanPunctuator() { - var token, str; +/***/ }, +/* 8 */ +/***/ function(module, exports, __webpack_require__) { - token = { - type: Token.Punctuator, - value: '', - lineNumber: lineNumber, - lineStart: lineStart, - start: index, - end: index - }; - - // Check for most common single-character punctuators. - str = source[index]; - switch (str) { - - case '(': - if (extra.tokenize) { - extra.openParenToken = extra.tokenValues.length; - } - ++index; - break; - - case '{': - if (extra.tokenize) { - extra.openCurlyToken = extra.tokenValues.length; - } - state.curlyStack.push('{'); - ++index; - break; - - case '.': - ++index; - if (source[index] === '.' && source[index + 1] === '.') { - // Spread operator: ... - index += 2; - str = '...'; - } - break; - - case '}': - ++index; - state.curlyStack.pop(); - break; - case ')': - case ';': - case ',': - case '[': - case ']': - case ':': - case '?': - case '~': - ++index; - break; - - default: - // 4-character punctuator. - str = source.substr(index, 4); - if (str === '>>>=') { - index += 4; - } else { - - // 3-character punctuators. - str = str.substr(0, 3); - if (str === '===' || str === '!==' || str === '>>>' || - str === '<<=' || str === '>>=') { - index += 3; - } else { - - // 2-character punctuators. - str = str.substr(0, 2); - if (str === '&&' || str === '||' || str === '==' || str === '!=' || - str === '+=' || str === '-=' || str === '*=' || str === '/=' || - str === '++' || str === '--' || str === '<<' || str === '>>' || - str === '&=' || str === '|=' || str === '^=' || str === '%=' || - str === '<=' || str === '>=' || str === '=>') { - index += 2; - } else { - - // 1-character punctuators. - str = source[index]; - if ('<>=!+-*%&|^/'.indexOf(str) >= 0) { - ++index; - } - } - } - } - } - - if (index === token.start) { - throwUnexpectedToken(); - } - - token.end = index; - token.value = str; - return token; - } - - // ECMA-262 11.8.3 Numeric Literals - - function scanHexLiteral(start) { - var number = ''; - - while (index < length) { - if (!isHexDigit(source[index])) { - break; - } - number += source[index++]; - } - - if (number.length === 0) { - throwUnexpectedToken(); - } - - if (isIdentifierStart(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseInt('0x' + number, 16), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function scanBinaryLiteral(start) { - var ch, number; - - number = ''; - - while (index < length) { - ch = source[index]; - if (ch !== '0' && ch !== '1') { - break; - } - number += source[index++]; - } - - if (number.length === 0) { - // only 0b or 0B - throwUnexpectedToken(); - } - - if (index < length) { - ch = source.charCodeAt(index); - /* istanbul ignore else */ - if (isIdentifierStart(ch) || isDecimalDigit(ch)) { - throwUnexpectedToken(); - } - } - - return { - type: Token.NumericLiteral, - value: parseInt(number, 2), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function scanOctalLiteral(prefix, start) { - var number, octal; - - if (isOctalDigit(prefix)) { - octal = true; - number = '0' + source[index++]; - } else { - octal = false; - ++index; - number = ''; - } - - while (index < length) { - if (!isOctalDigit(source[index])) { - break; - } - number += source[index++]; - } - - if (!octal && number.length === 0) { - // only 0o or 0O - throwUnexpectedToken(); - } - - if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseInt(number, 8), - octal: octal, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function isImplicitOctalLiteral() { - var i, ch; - - // Implicit octal, unless there is a non-octal digit. - // (Annex B.1.1 on Numeric Literals) - for (i = index + 1; i < length; ++i) { - ch = source[i]; - if (ch === '8' || ch === '9') { - return false; - } - if (!isOctalDigit(ch)) { - return true; - } - } - - return true; - } - - function scanNumericLiteral() { - var number, start, ch; - - ch = source[index]; - assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), - 'Numeric literal must start with a decimal digit or a decimal point'); - - start = index; - number = ''; - if (ch !== '.') { - number = source[index++]; - ch = source[index]; - - // Hex number starts with '0x'. - // Octal number starts with '0'. - // Octal number in ES6 starts with '0o'. - // Binary number in ES6 starts with '0b'. - if (number === '0') { - if (ch === 'x' || ch === 'X') { - ++index; - return scanHexLiteral(start); - } - if (ch === 'b' || ch === 'B') { - ++index; - return scanBinaryLiteral(start); - } - if (ch === 'o' || ch === 'O') { - return scanOctalLiteral(ch, start); - } - - if (isOctalDigit(ch)) { - if (isImplicitOctalLiteral()) { - return scanOctalLiteral(ch, start); - } - } - } - - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - ch = source[index]; - } - - if (ch === '.') { - number += source[index++]; - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - ch = source[index]; - } - - if (ch === 'e' || ch === 'E') { - number += source[index++]; - - ch = source[index]; - if (ch === '+' || ch === '-') { - number += source[index++]; - } - if (isDecimalDigit(source.charCodeAt(index))) { - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - } else { - throwUnexpectedToken(); - } - } - - if (isIdentifierStart(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseFloat(number), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.4 String Literals - - function scanStringLiteral() { - var str = '', quote, start, ch, unescaped, octToDec, octal = false; - - quote = source[index]; - assert((quote === '\'' || quote === '"'), - 'String literal must starts with a quote'); - - start = index; - ++index; - - while (index < length) { - ch = source[index++]; - - if (ch === quote) { - quote = ''; - break; - } else if (ch === '\\') { - ch = source[index++]; - if (!ch || !isLineTerminator(ch.charCodeAt(0))) { - switch (ch) { - case 'u': - case 'x': - if (source[index] === '{') { - ++index; - str += scanUnicodeCodePointEscape(); - } else { - unescaped = scanHexEscape(ch); - if (!unescaped) { - throw throwUnexpectedToken(); - } - str += unescaped; - } - break; - case 'n': - str += '\n'; - break; - case 'r': - str += '\r'; - break; - case 't': - str += '\t'; - break; - case 'b': - str += '\b'; - break; - case 'f': - str += '\f'; - break; - case 'v': - str += '\x0B'; - break; - case '8': - case '9': - str += ch; - tolerateUnexpectedToken(); - break; - - default: - if (isOctalDigit(ch)) { - octToDec = octalToDecimal(ch); - - octal = octToDec.octal || octal; - str += String.fromCharCode(octToDec.code); - } else { - str += ch; - } - break; - } - } else { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - } - } else if (isLineTerminator(ch.charCodeAt(0))) { - break; - } else { - str += ch; - } - } - - if (quote !== '') { - index = start; - throwUnexpectedToken(); - } - - return { - type: Token.StringLiteral, - value: str, - octal: octal, - lineNumber: startLineNumber, - lineStart: startLineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.6 Template Literal Lexical Components - - function scanTemplate() { - var cooked = '', ch, start, rawOffset, terminated, head, tail, restore, unescaped; - - terminated = false; - tail = false; - start = index; - head = (source[index] === '`'); - rawOffset = 2; - - ++index; - - while (index < length) { - ch = source[index++]; - if (ch === '`') { - rawOffset = 1; - tail = true; - terminated = true; - break; - } else if (ch === '$') { - if (source[index] === '{') { - state.curlyStack.push('${'); - ++index; - terminated = true; - break; - } - cooked += ch; - } else if (ch === '\\') { - ch = source[index++]; - if (!isLineTerminator(ch.charCodeAt(0))) { - switch (ch) { - case 'n': - cooked += '\n'; - break; - case 'r': - cooked += '\r'; - break; - case 't': - cooked += '\t'; - break; - case 'u': - case 'x': - if (source[index] === '{') { - ++index; - cooked += scanUnicodeCodePointEscape(); - } else { - restore = index; - unescaped = scanHexEscape(ch); - if (unescaped) { - cooked += unescaped; - } else { - index = restore; - cooked += ch; - } - } - break; - case 'b': - cooked += '\b'; - break; - case 'f': - cooked += '\f'; - break; - case 'v': - cooked += '\v'; - break; - - default: - if (ch === '0') { - if (isDecimalDigit(source.charCodeAt(index))) { - // Illegal: \01 \02 and so on - throwError(Messages.TemplateOctalLiteral); - } - cooked += '\0'; - } else if (isOctalDigit(ch)) { - // Illegal: \1 \2 - throwError(Messages.TemplateOctalLiteral); - } else { - cooked += ch; - } - break; - } - } else { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - } - } else if (isLineTerminator(ch.charCodeAt(0))) { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - cooked += '\n'; - } else { - cooked += ch; - } - } - - if (!terminated) { - throwUnexpectedToken(); - } - - if (!head) { - state.curlyStack.pop(); - } - - return { - type: Token.Template, - value: { - cooked: cooked, - raw: source.slice(start + 1, index - rawOffset) - }, - head: head, - tail: tail, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.5 Regular Expression Literals - - function testRegExp(pattern, flags) { - // The BMP character to use as a replacement for astral symbols when - // translating an ES6 "u"-flagged pattern to an ES5-compatible - // approximation. - // Note: replacing with '\uFFFF' enables false positives in unlikely - // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid - // pattern that would not be detected by this substitution. - var astralSubstitute = '\uFFFF', - tmp = pattern; - - if (flags.indexOf('u') >= 0) { - tmp = tmp - // Replace every Unicode escape sequence with the equivalent - // BMP character or a constant ASCII code point in the case of - // astral symbols. (See the above note on `astralSubstitute` - // for more information.) - .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) { - var codePoint = parseInt($1 || $2, 16); - if (codePoint > 0x10FFFF) { - throwUnexpectedToken(null, Messages.InvalidRegExp); - } - if (codePoint <= 0xFFFF) { - return String.fromCharCode(codePoint); - } - return astralSubstitute; - }) - // Replace each paired surrogate with a single ASCII symbol to - // avoid throwing on regular expressions that are only valid in - // combination with the "u" flag. - .replace( - /[\uD800-\uDBFF][\uDC00-\uDFFF]/g, - astralSubstitute - ); - } - - // First, detect invalid regular expressions. - try { - RegExp(tmp); - } catch (e) { - throwUnexpectedToken(null, Messages.InvalidRegExp); - } - - // Return a regular expression object for this pattern-flag pair, or - // `null` in case the current environment doesn't support the flags it - // uses. - try { - return new RegExp(pattern, flags); - } catch (exception) { - /* istanbul ignore next */ - return null; - } - } - - function scanRegExpBody() { - var ch, str, classMarker, terminated, body; - - ch = source[index]; - assert(ch === '/', 'Regular expression literal must start with a slash'); - str = source[index++]; - - classMarker = false; - terminated = false; - while (index < length) { - ch = source[index++]; - str += ch; - if (ch === '\\') { - ch = source[index++]; - // ECMA-262 7.8.5 - if (isLineTerminator(ch.charCodeAt(0))) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } - str += ch; - } else if (isLineTerminator(ch.charCodeAt(0))) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } else if (classMarker) { - if (ch === ']') { - classMarker = false; - } - } else { - if (ch === '/') { - terminated = true; - break; - } else if (ch === '[') { - classMarker = true; - } - } - } - - if (!terminated) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } - - // Exclude leading and trailing slash. - body = str.substr(1, str.length - 2); - return { - value: body, - literal: str - }; - } - - function scanRegExpFlags() { - var ch, str, flags, restore; - - str = ''; - flags = ''; - while (index < length) { - ch = source[index]; - if (!isIdentifierPart(ch.charCodeAt(0))) { - break; - } - - ++index; - if (ch === '\\' && index < length) { - ch = source[index]; - if (ch === 'u') { - ++index; - restore = index; - ch = scanHexEscape('u'); - if (ch) { - flags += ch; - for (str += '\\u'; restore < index; ++restore) { - str += source[restore]; - } - } else { - index = restore; - flags += 'u'; - str += '\\u'; - } - tolerateUnexpectedToken(); - } else { - str += '\\'; - tolerateUnexpectedToken(); - } - } else { - flags += ch; - str += ch; - } - } - - return { - value: flags, - literal: str - }; - } - - function scanRegExp() { - var start, body, flags, value; - scanning = true; - - lookahead = null; - skipComment(); - start = index; - - body = scanRegExpBody(); - flags = scanRegExpFlags(); - value = testRegExp(body.value, flags.value); - scanning = false; - if (extra.tokenize) { - return { - type: Token.RegularExpression, - value: value, - regex: { - pattern: body.value, - flags: flags.value - }, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - return { - literal: body.literal + flags.literal, - value: value, - regex: { - pattern: body.value, - flags: flags.value - }, - start: start, - end: index - }; - } - - function collectRegex() { - var pos, loc, regex, token; - - skipComment(); - - pos = index; - loc = { - start: { - line: lineNumber, - column: index - lineStart - } - }; - - regex = scanRegExp(); - - loc.end = { - line: lineNumber, - column: index - lineStart - }; - - /* istanbul ignore next */ - if (!extra.tokenize) { - // Pop the previous token, which is likely '/' or '/=' - if (extra.tokens.length > 0) { - token = extra.tokens[extra.tokens.length - 1]; - if (token.range[0] === pos && token.type === 'Punctuator') { - if (token.value === '/' || token.value === '/=') { - extra.tokens.pop(); - } - } - } - - extra.tokens.push({ - type: 'RegularExpression', - value: regex.literal, - regex: regex.regex, - range: [pos, index], - loc: loc - }); - } - - return regex; - } - - function isIdentifierName(token) { - return token.type === Token.Identifier || - token.type === Token.Keyword || - token.type === Token.BooleanLiteral || - token.type === Token.NullLiteral; - } - - // Using the following algorithm: - // https://github.com/mozilla/sweet.js/wiki/design - - function advanceSlash() { - var regex, previous, check; - - function testKeyword(value) { - return value && (value.length > 1) && (value[0] >= 'a') && (value[0] <= 'z'); - } - - previous = extra.tokenValues[extra.tokenValues.length - 1]; - regex = (previous !== null); - - switch (previous) { - case 'this': - case ']': - regex = false; - break; - - case ')': - check = extra.tokenValues[extra.openParenToken - 1]; - regex = (check === 'if' || check === 'while' || check === 'for' || check === 'with'); - break; - - case '}': - // Dividing a function by anything makes little sense, - // but we have to check for that. - regex = false; - if (testKeyword(extra.tokenValues[extra.openCurlyToken - 3])) { - // Anonymous function, e.g. function(){} /42 - check = extra.tokenValues[extra.openCurlyToken - 4]; - regex = check ? (FnExprTokens.indexOf(check) < 0) : false; - } else if (testKeyword(extra.tokenValues[extra.openCurlyToken - 4])) { - // Named function, e.g. function f(){} /42/ - check = extra.tokenValues[extra.openCurlyToken - 5]; - regex = check ? (FnExprTokens.indexOf(check) < 0) : true; - } - } - - return regex ? collectRegex() : scanPunctuator(); - } - - function advance() { - var cp, token; - - if (index >= length) { - return { - type: Token.EOF, - lineNumber: lineNumber, - lineStart: lineStart, - start: index, - end: index - }; - } - - cp = source.charCodeAt(index); - - if (isIdentifierStart(cp)) { - token = scanIdentifier(); - if (strict && isStrictModeReservedWord(token.value)) { - token.type = Token.Keyword; - } - return token; - } - - // Very common: ( and ) and ; - if (cp === 0x28 || cp === 0x29 || cp === 0x3B) { - return scanPunctuator(); - } - - // String literal starts with single quote (U+0027) or double quote (U+0022). - if (cp === 0x27 || cp === 0x22) { - return scanStringLiteral(); - } - - // Dot (.) U+002E can also start a floating-point number, hence the need - // to check the next character. - if (cp === 0x2E) { - if (isDecimalDigit(source.charCodeAt(index + 1))) { - return scanNumericLiteral(); - } - return scanPunctuator(); - } - - if (isDecimalDigit(cp)) { - return scanNumericLiteral(); - } - - // Slash (/) U+002F can also start a regex. - if (extra.tokenize && cp === 0x2F) { - return advanceSlash(); - } - - // Template literals start with ` (U+0060) for template head - // or } (U+007D) for template middle or template tail. - if (cp === 0x60 || (cp === 0x7D && state.curlyStack[state.curlyStack.length - 1] === '${')) { - return scanTemplate(); - } - - // Possible identifier start in a surrogate pair. - if (cp >= 0xD800 && cp < 0xDFFF) { - cp = codePointAt(index); - if (isIdentifierStart(cp)) { - return scanIdentifier(); - } - } - - return scanPunctuator(); - } - - function collectToken() { - var loc, token, value, entry; - - loc = { - start: { - line: lineNumber, - column: index - lineStart - } - }; - - token = advance(); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - - if (token.type !== Token.EOF) { - value = source.slice(token.start, token.end); - entry = { - type: TokenName[token.type], - value: value, - range: [token.start, token.end], - loc: loc - }; - if (token.regex) { - entry.regex = { - pattern: token.regex.pattern, - flags: token.regex.flags - }; - } - if (extra.tokenValues) { - extra.tokenValues.push((entry.type === 'Punctuator' || entry.type === 'Keyword') ? entry.value : null); - } - if (extra.tokenize) { - if (!extra.range) { - delete entry.range; - } - if (!extra.loc) { - delete entry.loc; - } - if (extra.delegate) { - entry = extra.delegate(entry); - } - } - extra.tokens.push(entry); - } - - return token; - } - - function lex() { - var token; - scanning = true; - - lastIndex = index; - lastLineNumber = lineNumber; - lastLineStart = lineStart; - - skipComment(); - - token = lookahead; - - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - - lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); - scanning = false; - return token; - } - - function peek() { - scanning = true; - - skipComment(); - - lastIndex = index; - lastLineNumber = lineNumber; - lastLineStart = lineStart; - - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - - lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); - scanning = false; - } - - function Position() { - this.line = startLineNumber; - this.column = startIndex - startLineStart; - } - - function SourceLocation() { - this.start = new Position(); - this.end = null; - } - - function WrappingSourceLocation(startToken) { - this.start = { - line: startToken.lineNumber, - column: startToken.start - startToken.lineStart - }; - this.end = null; - } - - function Node() { - if (extra.range) { - this.range = [startIndex, 0]; - } - if (extra.loc) { - this.loc = new SourceLocation(); - } - } - - function WrappingNode(startToken) { - if (extra.range) { - this.range = [startToken.start, 0]; - } - if (extra.loc) { - this.loc = new WrappingSourceLocation(startToken); - } - } - - WrappingNode.prototype = Node.prototype = { - - processComment: function () { - var lastChild, - innerComments, - leadingComments, - trailingComments, - bottomRight = extra.bottomRightStack, - i, - comment, - last = bottomRight[bottomRight.length - 1]; - - if (this.type === Syntax.Program) { - if (this.body.length > 0) { - return; - } - } - /** - * patch innnerComments for properties empty block - * `function a() {/** comments **\/}` - */ - - if (this.type === Syntax.BlockStatement && this.body.length === 0) { - innerComments = []; - for (i = extra.leadingComments.length - 1; i >= 0; --i) { - comment = extra.leadingComments[i]; - if (this.range[1] >= comment.range[1]) { - innerComments.unshift(comment); - extra.leadingComments.splice(i, 1); - extra.trailingComments.splice(i, 1); - } - } - if (innerComments.length) { - this.innerComments = innerComments; - //bottomRight.push(this); - return; - } - } - - if (extra.trailingComments.length > 0) { - trailingComments = []; - for (i = extra.trailingComments.length - 1; i >= 0; --i) { - comment = extra.trailingComments[i]; - if (comment.range[0] >= this.range[1]) { - trailingComments.unshift(comment); - extra.trailingComments.splice(i, 1); - } - } - extra.trailingComments = []; - } else { - if (last && last.trailingComments && last.trailingComments[0].range[0] >= this.range[1]) { - trailingComments = last.trailingComments; - delete last.trailingComments; - } - } - - // Eating the stack. - while (last && last.range[0] >= this.range[0]) { - lastChild = bottomRight.pop(); - last = bottomRight[bottomRight.length - 1]; - } - - if (lastChild) { - if (lastChild.leadingComments) { - leadingComments = []; - for (i = lastChild.leadingComments.length - 1; i >= 0; --i) { - comment = lastChild.leadingComments[i]; - if (comment.range[1] <= this.range[0]) { - leadingComments.unshift(comment); - lastChild.leadingComments.splice(i, 1); - } - } - - if (!lastChild.leadingComments.length) { - lastChild.leadingComments = undefined; - } - } - } else if (extra.leadingComments.length > 0) { - leadingComments = []; - for (i = extra.leadingComments.length - 1; i >= 0; --i) { - comment = extra.leadingComments[i]; - if (comment.range[1] <= this.range[0]) { - leadingComments.unshift(comment); - extra.leadingComments.splice(i, 1); - } - } - } - - - if (leadingComments && leadingComments.length > 0) { - this.leadingComments = leadingComments; - } - if (trailingComments && trailingComments.length > 0) { - this.trailingComments = trailingComments; - } - - bottomRight.push(this); - }, - - finish: function () { - if (extra.range) { - this.range[1] = lastIndex; - } - if (extra.loc) { - this.loc.end = { - line: lastLineNumber, - column: lastIndex - lastLineStart - }; - if (extra.source) { - this.loc.source = extra.source; - } - } - - if (extra.attachComment) { - this.processComment(); - } - }, - - finishArrayExpression: function (elements) { - this.type = Syntax.ArrayExpression; - this.elements = elements; - this.finish(); - return this; - }, - - finishArrayPattern: function (elements) { - this.type = Syntax.ArrayPattern; - this.elements = elements; - this.finish(); - return this; - }, - - finishArrowFunctionExpression: function (params, defaults, body, expression) { - this.type = Syntax.ArrowFunctionExpression; - this.id = null; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = false; - this.expression = expression; - this.finish(); - return this; - }, - - finishAssignmentExpression: function (operator, left, right) { - this.type = Syntax.AssignmentExpression; - this.operator = operator; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishAssignmentPattern: function (left, right) { - this.type = Syntax.AssignmentPattern; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishBinaryExpression: function (operator, left, right) { - this.type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression : Syntax.BinaryExpression; - this.operator = operator; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishBlockStatement: function (body) { - this.type = Syntax.BlockStatement; - this.body = body; - this.finish(); - return this; - }, - - finishBreakStatement: function (label) { - this.type = Syntax.BreakStatement; - this.label = label; - this.finish(); - return this; - }, - - finishCallExpression: function (callee, args) { - this.type = Syntax.CallExpression; - this.callee = callee; - this.arguments = args; - this.finish(); - return this; - }, - - finishCatchClause: function (param, body) { - this.type = Syntax.CatchClause; - this.param = param; - this.body = body; - this.finish(); - return this; - }, - - finishClassBody: function (body) { - this.type = Syntax.ClassBody; - this.body = body; - this.finish(); - return this; - }, - - finishClassDeclaration: function (id, superClass, body) { - this.type = Syntax.ClassDeclaration; - this.id = id; - this.superClass = superClass; - this.body = body; - this.finish(); - return this; - }, - - finishClassExpression: function (id, superClass, body) { - this.type = Syntax.ClassExpression; - this.id = id; - this.superClass = superClass; - this.body = body; - this.finish(); - return this; - }, - - finishConditionalExpression: function (test, consequent, alternate) { - this.type = Syntax.ConditionalExpression; - this.test = test; - this.consequent = consequent; - this.alternate = alternate; - this.finish(); - return this; - }, - - finishContinueStatement: function (label) { - this.type = Syntax.ContinueStatement; - this.label = label; - this.finish(); - return this; - }, - - finishDebuggerStatement: function () { - this.type = Syntax.DebuggerStatement; - this.finish(); - return this; - }, - - finishDoWhileStatement: function (body, test) { - this.type = Syntax.DoWhileStatement; - this.body = body; - this.test = test; - this.finish(); - return this; - }, - - finishEmptyStatement: function () { - this.type = Syntax.EmptyStatement; - this.finish(); - return this; - }, - - finishExpressionStatement: function (expression) { - this.type = Syntax.ExpressionStatement; - this.expression = expression; - this.finish(); - return this; - }, - - finishForStatement: function (init, test, update, body) { - this.type = Syntax.ForStatement; - this.init = init; - this.test = test; - this.update = update; - this.body = body; - this.finish(); - return this; - }, - - finishForOfStatement: function (left, right, body) { - this.type = Syntax.ForOfStatement; - this.left = left; - this.right = right; - this.body = body; - this.finish(); - return this; - }, - - finishForInStatement: function (left, right, body) { - this.type = Syntax.ForInStatement; - this.left = left; - this.right = right; - this.body = body; - this.each = false; - this.finish(); - return this; - }, - - finishFunctionDeclaration: function (id, params, defaults, body, generator) { - this.type = Syntax.FunctionDeclaration; - this.id = id; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = generator; - this.expression = false; - this.finish(); - return this; - }, - - finishFunctionExpression: function (id, params, defaults, body, generator) { - this.type = Syntax.FunctionExpression; - this.id = id; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = generator; - this.expression = false; - this.finish(); - return this; - }, - - finishIdentifier: function (name) { - this.type = Syntax.Identifier; - this.name = name; - this.finish(); - return this; - }, - - finishIfStatement: function (test, consequent, alternate) { - this.type = Syntax.IfStatement; - this.test = test; - this.consequent = consequent; - this.alternate = alternate; - this.finish(); - return this; - }, - - finishLabeledStatement: function (label, body) { - this.type = Syntax.LabeledStatement; - this.label = label; - this.body = body; - this.finish(); - return this; - }, - - finishLiteral: function (token) { - this.type = Syntax.Literal; - this.value = token.value; - this.raw = source.slice(token.start, token.end); - if (token.regex) { - this.regex = token.regex; - } - this.finish(); - return this; - }, - - finishMemberExpression: function (accessor, object, property) { - this.type = Syntax.MemberExpression; - this.computed = accessor === '['; - this.object = object; - this.property = property; - this.finish(); - return this; - }, - - finishMetaProperty: function (meta, property) { - this.type = Syntax.MetaProperty; - this.meta = meta; - this.property = property; - this.finish(); - return this; - }, - - finishNewExpression: function (callee, args) { - this.type = Syntax.NewExpression; - this.callee = callee; - this.arguments = args; - this.finish(); - return this; - }, - - finishObjectExpression: function (properties) { - this.type = Syntax.ObjectExpression; - this.properties = properties; - this.finish(); - return this; - }, - - finishObjectPattern: function (properties) { - this.type = Syntax.ObjectPattern; - this.properties = properties; - this.finish(); - return this; - }, - - finishPostfixExpression: function (operator, argument) { - this.type = Syntax.UpdateExpression; - this.operator = operator; - this.argument = argument; - this.prefix = false; - this.finish(); - return this; - }, - - finishProgram: function (body, sourceType) { - this.type = Syntax.Program; - this.body = body; - this.sourceType = sourceType; - this.finish(); - return this; - }, - - finishProperty: function (kind, key, computed, value, method, shorthand) { - this.type = Syntax.Property; - this.key = key; - this.computed = computed; - this.value = value; - this.kind = kind; - this.method = method; - this.shorthand = shorthand; - this.finish(); - return this; - }, - - finishRestElement: function (argument) { - this.type = Syntax.RestElement; - this.argument = argument; - this.finish(); - return this; - }, - - finishReturnStatement: function (argument) { - this.type = Syntax.ReturnStatement; - this.argument = argument; - this.finish(); - return this; - }, - - finishSequenceExpression: function (expressions) { - this.type = Syntax.SequenceExpression; - this.expressions = expressions; - this.finish(); - return this; - }, - - finishSpreadElement: function (argument) { - this.type = Syntax.SpreadElement; - this.argument = argument; - this.finish(); - return this; - }, - - finishSwitchCase: function (test, consequent) { - this.type = Syntax.SwitchCase; - this.test = test; - this.consequent = consequent; - this.finish(); - return this; - }, - - finishSuper: function () { - this.type = Syntax.Super; - this.finish(); - return this; - }, - - finishSwitchStatement: function (discriminant, cases) { - this.type = Syntax.SwitchStatement; - this.discriminant = discriminant; - this.cases = cases; - this.finish(); - return this; - }, - - finishTaggedTemplateExpression: function (tag, quasi) { - this.type = Syntax.TaggedTemplateExpression; - this.tag = tag; - this.quasi = quasi; - this.finish(); - return this; - }, - - finishTemplateElement: function (value, tail) { - this.type = Syntax.TemplateElement; - this.value = value; - this.tail = tail; - this.finish(); - return this; - }, - - finishTemplateLiteral: function (quasis, expressions) { - this.type = Syntax.TemplateLiteral; - this.quasis = quasis; - this.expressions = expressions; - this.finish(); - return this; - }, - - finishThisExpression: function () { - this.type = Syntax.ThisExpression; - this.finish(); - return this; - }, - - finishThrowStatement: function (argument) { - this.type = Syntax.ThrowStatement; - this.argument = argument; - this.finish(); - return this; - }, - - finishTryStatement: function (block, handler, finalizer) { - this.type = Syntax.TryStatement; - this.block = block; - this.guardedHandlers = []; - this.handlers = handler ? [handler] : []; - this.handler = handler; - this.finalizer = finalizer; - this.finish(); - return this; - }, - - finishUnaryExpression: function (operator, argument) { - this.type = (operator === '++' || operator === '--') ? Syntax.UpdateExpression : Syntax.UnaryExpression; - this.operator = operator; - this.argument = argument; - this.prefix = true; - this.finish(); - return this; - }, - - finishVariableDeclaration: function (declarations) { - this.type = Syntax.VariableDeclaration; - this.declarations = declarations; - this.kind = 'var'; - this.finish(); - return this; - }, - - finishLexicalDeclaration: function (declarations, kind) { - this.type = Syntax.VariableDeclaration; - this.declarations = declarations; - this.kind = kind; - this.finish(); - return this; - }, - - finishVariableDeclarator: function (id, init) { - this.type = Syntax.VariableDeclarator; - this.id = id; - this.init = init; - this.finish(); - return this; - }, - - finishWhileStatement: function (test, body) { - this.type = Syntax.WhileStatement; - this.test = test; - this.body = body; - this.finish(); - return this; - }, - - finishWithStatement: function (object, body) { - this.type = Syntax.WithStatement; - this.object = object; - this.body = body; - this.finish(); - return this; - }, - - finishExportSpecifier: function (local, exported) { - this.type = Syntax.ExportSpecifier; - this.exported = exported || local; - this.local = local; - this.finish(); - return this; - }, - - finishImportDefaultSpecifier: function (local) { - this.type = Syntax.ImportDefaultSpecifier; - this.local = local; - this.finish(); - return this; - }, - - finishImportNamespaceSpecifier: function (local) { - this.type = Syntax.ImportNamespaceSpecifier; - this.local = local; - this.finish(); - return this; - }, - - finishExportNamedDeclaration: function (declaration, specifiers, src) { - this.type = Syntax.ExportNamedDeclaration; - this.declaration = declaration; - this.specifiers = specifiers; - this.source = src; - this.finish(); - return this; - }, - - finishExportDefaultDeclaration: function (declaration) { - this.type = Syntax.ExportDefaultDeclaration; - this.declaration = declaration; - this.finish(); - return this; - }, - - finishExportAllDeclaration: function (src) { - this.type = Syntax.ExportAllDeclaration; - this.source = src; - this.finish(); - return this; - }, - - finishImportSpecifier: function (local, imported) { - this.type = Syntax.ImportSpecifier; - this.local = local || imported; - this.imported = imported; - this.finish(); - return this; - }, - - finishImportDeclaration: function (specifiers, src) { - this.type = Syntax.ImportDeclaration; - this.specifiers = specifiers; - this.source = src; - this.finish(); - return this; - }, - - finishYieldExpression: function (argument, delegate) { - this.type = Syntax.YieldExpression; - this.argument = argument; - this.delegate = delegate; - this.finish(); - return this; - } - }; - - - function recordError(error) { - var e, existing; - - for (e = 0; e < extra.errors.length; e++) { - existing = extra.errors[e]; - // Prevent duplicated error. - /* istanbul ignore next */ - if (existing.index === error.index && existing.message === error.message) { - return; - } - } - - extra.errors.push(error); - } - - function constructError(msg, column) { - var error = new Error(msg); - try { - throw error; - } catch (base) { - /* istanbul ignore else */ - if (Object.create && Object.defineProperty) { - error = Object.create(base); - Object.defineProperty(error, 'column', { value: column }); - } - } finally { - return error; - } - } - - function createError(line, pos, description) { - var msg, column, error; - - msg = 'Line ' + line + ': ' + description; - column = pos - (scanning ? lineStart : lastLineStart) + 1; - error = constructError(msg, column); - error.lineNumber = line; - error.description = description; - error.index = pos; - return error; - } - - // Throw an exception - - function throwError(messageFormat) { - var args, msg; - - args = Array.prototype.slice.call(arguments, 1); - msg = messageFormat.replace(/%(\d)/g, - function (whole, idx) { - assert(idx < args.length, 'Message reference must be in range'); - return args[idx]; - } - ); - - throw createError(lastLineNumber, lastIndex, msg); - } - - function tolerateError(messageFormat) { - var args, msg, error; - - args = Array.prototype.slice.call(arguments, 1); - /* istanbul ignore next */ - msg = messageFormat.replace(/%(\d)/g, - function (whole, idx) { - assert(idx < args.length, 'Message reference must be in range'); - return args[idx]; - } - ); - - error = createError(lineNumber, lastIndex, msg); - if (extra.errors) { - recordError(error); - } else { - throw error; - } - } - - // Throw an exception because of the token. - - function unexpectedTokenError(token, message) { - var value, msg = message || Messages.UnexpectedToken; - - if (token) { - if (!message) { - msg = (token.type === Token.EOF) ? Messages.UnexpectedEOS : - (token.type === Token.Identifier) ? Messages.UnexpectedIdentifier : - (token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber : - (token.type === Token.StringLiteral) ? Messages.UnexpectedString : - (token.type === Token.Template) ? Messages.UnexpectedTemplate : - Messages.UnexpectedToken; - - if (token.type === Token.Keyword) { - if (isFutureReservedWord(token.value)) { - msg = Messages.UnexpectedReserved; - } else if (strict && isStrictModeReservedWord(token.value)) { - msg = Messages.StrictReservedWord; - } - } - } - - value = (token.type === Token.Template) ? token.value.raw : token.value; - } else { - value = 'ILLEGAL'; - } - - msg = msg.replace('%0', value); - - return (token && typeof token.lineNumber === 'number') ? - createError(token.lineNumber, token.start, msg) : - createError(scanning ? lineNumber : lastLineNumber, scanning ? index : lastIndex, msg); - } - - function throwUnexpectedToken(token, message) { - throw unexpectedTokenError(token, message); - } - - function tolerateUnexpectedToken(token, message) { - var error = unexpectedTokenError(token, message); - if (extra.errors) { - recordError(error); - } else { - throw error; - } - } - - // Expect the next token to match the specified punctuator. - // If not, an exception will be thrown. - - function expect(value) { - var token = lex(); - if (token.type !== Token.Punctuator || token.value !== value) { - throwUnexpectedToken(token); - } - } - - /** - * @name expectCommaSeparator - * @description Quietly expect a comma when in tolerant mode, otherwise delegates - * to expect(value) - * @since 2.0 - */ - function expectCommaSeparator() { - var token; - - if (extra.errors) { - token = lookahead; - if (token.type === Token.Punctuator && token.value === ',') { - lex(); - } else if (token.type === Token.Punctuator && token.value === ';') { - lex(); - tolerateUnexpectedToken(token); - } else { - tolerateUnexpectedToken(token, Messages.UnexpectedToken); - } - } else { - expect(','); - } - } - - // Expect the next token to match the specified keyword. - // If not, an exception will be thrown. - - function expectKeyword(keyword) { - var token = lex(); - if (token.type !== Token.Keyword || token.value !== keyword) { - throwUnexpectedToken(token); - } - } - - // Return true if the next token matches the specified punctuator. - - function match(value) { - return lookahead.type === Token.Punctuator && lookahead.value === value; - } - - // Return true if the next token matches the specified keyword - - function matchKeyword(keyword) { - return lookahead.type === Token.Keyword && lookahead.value === keyword; - } - - // Return true if the next token matches the specified contextual keyword - // (where an identifier is sometimes a keyword depending on the context) - - function matchContextualKeyword(keyword) { - return lookahead.type === Token.Identifier && lookahead.value === keyword; - } - - // Return true if the next token is an assignment operator - - function matchAssign() { - var op; - - if (lookahead.type !== Token.Punctuator) { - return false; - } - op = lookahead.value; - return op === '=' || - op === '*=' || - op === '/=' || - op === '%=' || - op === '+=' || - op === '-=' || - op === '<<=' || - op === '>>=' || - op === '>>>=' || - op === '&=' || - op === '^=' || - op === '|='; - } - - function consumeSemicolon() { - // Catch the very common case first: immediately a semicolon (U+003B). - if (source.charCodeAt(startIndex) === 0x3B || match(';')) { - lex(); - return; - } - - if (hasLineTerminator) { - return; - } - - // FIXME(ikarienator): this is seemingly an issue in the previous location info convention. - lastIndex = startIndex; - lastLineNumber = startLineNumber; - lastLineStart = startLineStart; - - if (lookahead.type !== Token.EOF && !match('}')) { - throwUnexpectedToken(lookahead); - } - } - - // Cover grammar support. - // - // When an assignment expression position starts with an left parenthesis, the determination of the type - // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead) - // or the first comma. This situation also defers the determination of all the expressions nested in the pair. - // - // There are three productions that can be parsed in a parentheses pair that needs to be determined - // after the outermost pair is closed. They are: - // - // 1. AssignmentExpression - // 2. BindingElements - // 3. AssignmentTargets - // - // In order to avoid exponential backtracking, we use two flags to denote if the production can be - // binding element or assignment target. - // - // The three productions have the relationship: - // - // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression - // - // with a single exception that CoverInitializedName when used directly in an Expression, generates - // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the - // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair. - // - // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not - // effect the current flags. This means the production the parser parses is only used as an expression. Therefore - // the CoverInitializedName check is conducted. - // - // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates - // the flags outside of the parser. This means the production the parser parses is used as a part of a potential - // pattern. The CoverInitializedName check is deferred. - function isolateCoverGrammar(parser) { - var oldIsBindingElement = isBindingElement, - oldIsAssignmentTarget = isAssignmentTarget, - oldFirstCoverInitializedNameError = firstCoverInitializedNameError, - result; - isBindingElement = true; - isAssignmentTarget = true; - firstCoverInitializedNameError = null; - result = parser(); - if (firstCoverInitializedNameError !== null) { - throwUnexpectedToken(firstCoverInitializedNameError); - } - isBindingElement = oldIsBindingElement; - isAssignmentTarget = oldIsAssignmentTarget; - firstCoverInitializedNameError = oldFirstCoverInitializedNameError; - return result; - } - - function inheritCoverGrammar(parser) { - var oldIsBindingElement = isBindingElement, - oldIsAssignmentTarget = isAssignmentTarget, - oldFirstCoverInitializedNameError = firstCoverInitializedNameError, - result; - isBindingElement = true; - isAssignmentTarget = true; - firstCoverInitializedNameError = null; - result = parser(); - isBindingElement = isBindingElement && oldIsBindingElement; - isAssignmentTarget = isAssignmentTarget && oldIsAssignmentTarget; - firstCoverInitializedNameError = oldFirstCoverInitializedNameError || firstCoverInitializedNameError; - return result; - } - - // ECMA-262 13.3.3 Destructuring Binding Patterns - - function parseArrayPattern(params, kind) { - var node = new Node(), elements = [], rest, restNode; - expect('['); - - while (!match(']')) { - if (match(',')) { - lex(); - elements.push(null); - } else { - if (match('...')) { - restNode = new Node(); - lex(); - params.push(lookahead); - rest = parseVariableIdentifier(kind); - elements.push(restNode.finishRestElement(rest)); - break; - } else { - elements.push(parsePatternWithDefault(params, kind)); - } - if (!match(']')) { - expect(','); - } - } - - } - - expect(']'); - - return node.finishArrayPattern(elements); - } - - function parsePropertyPattern(params, kind) { - var node = new Node(), key, keyToken, computed = match('['), init; - if (lookahead.type === Token.Identifier) { - keyToken = lookahead; - key = parseVariableIdentifier(); - if (match('=')) { - params.push(keyToken); - lex(); - init = parseAssignmentExpression(); - - return node.finishProperty( - 'init', key, false, - new WrappingNode(keyToken).finishAssignmentPattern(key, init), false, true); - } else if (!match(':')) { - params.push(keyToken); - return node.finishProperty('init', key, false, key, false, true); - } - } else { - key = parseObjectPropertyKey(); - } - expect(':'); - init = parsePatternWithDefault(params, kind); - return node.finishProperty('init', key, computed, init, false, false); - } - - function parseObjectPattern(params, kind) { - var node = new Node(), properties = []; - - expect('{'); - - while (!match('}')) { - properties.push(parsePropertyPattern(params, kind)); - if (!match('}')) { - expect(','); - } - } - - lex(); - - return node.finishObjectPattern(properties); - } - - function parsePattern(params, kind) { - if (match('[')) { - return parseArrayPattern(params, kind); - } else if (match('{')) { - return parseObjectPattern(params, kind); - } else if (matchKeyword('let')) { - if (kind === 'const' || kind === 'let') { - tolerateUnexpectedToken(lookahead, Messages.UnexpectedToken); - } - } - - params.push(lookahead); - return parseVariableIdentifier(kind); - } - - function parsePatternWithDefault(params, kind) { - var startToken = lookahead, pattern, previousAllowYield, right; - pattern = parsePattern(params, kind); - if (match('=')) { - lex(); - previousAllowYield = state.allowYield; - state.allowYield = true; - right = isolateCoverGrammar(parseAssignmentExpression); - state.allowYield = previousAllowYield; - pattern = new WrappingNode(startToken).finishAssignmentPattern(pattern, right); - } - return pattern; - } - - // ECMA-262 12.2.5 Array Initializer - - function parseArrayInitializer() { - var elements = [], node = new Node(), restSpread; - - expect('['); - - while (!match(']')) { - if (match(',')) { - lex(); - elements.push(null); - } else if (match('...')) { - restSpread = new Node(); - lex(); - restSpread.finishSpreadElement(inheritCoverGrammar(parseAssignmentExpression)); - - if (!match(']')) { - isAssignmentTarget = isBindingElement = false; - expect(','); - } - elements.push(restSpread); - } else { - elements.push(inheritCoverGrammar(parseAssignmentExpression)); - - if (!match(']')) { - expect(','); - } - } - } - - lex(); - - return node.finishArrayExpression(elements); - } - - // ECMA-262 12.2.6 Object Initializer - - function parsePropertyFunction(node, paramInfo, isGenerator) { - var previousStrict, body; - - isAssignmentTarget = isBindingElement = false; - - previousStrict = strict; - body = isolateCoverGrammar(parseFunctionSourceElements); - - if (strict && paramInfo.firstRestricted) { - tolerateUnexpectedToken(paramInfo.firstRestricted, paramInfo.message); - } - if (strict && paramInfo.stricted) { - tolerateUnexpectedToken(paramInfo.stricted, paramInfo.message); - } - - strict = previousStrict; - return node.finishFunctionExpression(null, paramInfo.params, paramInfo.defaults, body, isGenerator); - } - - function parsePropertyMethodFunction() { - var params, method, node = new Node(), - previousAllowYield = state.allowYield; - - state.allowYield = false; - params = parseParams(); - state.allowYield = previousAllowYield; - - state.allowYield = false; - method = parsePropertyFunction(node, params, false); - state.allowYield = previousAllowYield; - - return method; - } - - function parseObjectPropertyKey() { - var token, node = new Node(), expr; - - token = lex(); - - // Note: This function is called only from parseObjectProperty(), where - // EOF and Punctuator tokens are already filtered out. - - switch (token.type) { - case Token.StringLiteral: - case Token.NumericLiteral: - if (strict && token.octal) { - tolerateUnexpectedToken(token, Messages.StrictOctalLiteral); - } - return node.finishLiteral(token); - case Token.Identifier: - case Token.BooleanLiteral: - case Token.NullLiteral: - case Token.Keyword: - return node.finishIdentifier(token.value); - case Token.Punctuator: - if (token.value === '[') { - expr = isolateCoverGrammar(parseAssignmentExpression); - expect(']'); - return expr; - } - break; - } - throwUnexpectedToken(token); - } - - function lookaheadPropertyName() { - switch (lookahead.type) { - case Token.Identifier: - case Token.StringLiteral: - case Token.BooleanLiteral: - case Token.NullLiteral: - case Token.NumericLiteral: - case Token.Keyword: - return true; - case Token.Punctuator: - return lookahead.value === '['; - } - return false; - } - - // This function is to try to parse a MethodDefinition as defined in 14.3. But in the case of object literals, - // it might be called at a position where there is in fact a short hand identifier pattern or a data property. - // This can only be determined after we consumed up to the left parentheses. - // - // In order to avoid back tracking, it returns `null` if the position is not a MethodDefinition and the caller - // is responsible to visit other options. - function tryParseMethodDefinition(token, key, computed, node) { - var value, options, methodNode, params, - previousAllowYield = state.allowYield; - - if (token.type === Token.Identifier) { - // check for `get` and `set`; - - if (token.value === 'get' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - expect('('); - expect(')'); - - state.allowYield = false; - value = parsePropertyFunction(methodNode, { - params: [], - defaults: [], - stricted: null, - firstRestricted: null, - message: null - }, false); - state.allowYield = previousAllowYield; - - return node.finishProperty('get', key, computed, value, false, false); - } else if (token.value === 'set' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - expect('('); - - options = { - params: [], - defaultCount: 0, - defaults: [], - firstRestricted: null, - paramSet: {} - }; - if (match(')')) { - tolerateUnexpectedToken(lookahead); - } else { - state.allowYield = false; - parseParam(options); - state.allowYield = previousAllowYield; - if (options.defaultCount === 0) { - options.defaults = []; - } - } - expect(')'); - - state.allowYield = false; - value = parsePropertyFunction(methodNode, options, false); - state.allowYield = previousAllowYield; - - return node.finishProperty('set', key, computed, value, false, false); - } - } else if (token.type === Token.Punctuator && token.value === '*' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - - state.allowYield = true; - params = parseParams(); - state.allowYield = previousAllowYield; - - state.allowYield = false; - value = parsePropertyFunction(methodNode, params, true); - state.allowYield = previousAllowYield; - - return node.finishProperty('init', key, computed, value, true, false); - } - - if (key && match('(')) { - value = parsePropertyMethodFunction(); - return node.finishProperty('init', key, computed, value, true, false); - } - - // Not a MethodDefinition. - return null; - } - - function parseObjectProperty(hasProto) { - var token = lookahead, node = new Node(), computed, key, maybeMethod, proto, value; - - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - } - maybeMethod = tryParseMethodDefinition(token, key, computed, node); - if (maybeMethod) { - return maybeMethod; - } - - if (!key) { - throwUnexpectedToken(lookahead); - } - - // Check for duplicated __proto__ - if (!computed) { - proto = (key.type === Syntax.Identifier && key.name === '__proto__') || - (key.type === Syntax.Literal && key.value === '__proto__'); - if (hasProto.value && proto) { - tolerateError(Messages.DuplicateProtoProperty); - } - hasProto.value |= proto; - } - - if (match(':')) { - lex(); - value = inheritCoverGrammar(parseAssignmentExpression); - return node.finishProperty('init', key, computed, value, false, false); - } - - if (token.type === Token.Identifier) { - if (match('=')) { - firstCoverInitializedNameError = lookahead; - lex(); - value = isolateCoverGrammar(parseAssignmentExpression); - return node.finishProperty('init', key, computed, - new WrappingNode(token).finishAssignmentPattern(key, value), false, true); - } - return node.finishProperty('init', key, computed, key, false, true); - } - - throwUnexpectedToken(lookahead); - } - - function parseObjectInitializer() { - var properties = [], hasProto = {value: false}, node = new Node(); - - expect('{'); - - while (!match('}')) { - properties.push(parseObjectProperty(hasProto)); - - if (!match('}')) { - expectCommaSeparator(); - } - } - - expect('}'); - - return node.finishObjectExpression(properties); - } - - function reinterpretExpressionAsPattern(expr) { - var i; - switch (expr.type) { - case Syntax.Identifier: - case Syntax.MemberExpression: - case Syntax.RestElement: - case Syntax.AssignmentPattern: - break; - case Syntax.SpreadElement: - expr.type = Syntax.RestElement; - reinterpretExpressionAsPattern(expr.argument); - break; - case Syntax.ArrayExpression: - expr.type = Syntax.ArrayPattern; - for (i = 0; i < expr.elements.length; i++) { - if (expr.elements[i] !== null) { - reinterpretExpressionAsPattern(expr.elements[i]); - } - } - break; - case Syntax.ObjectExpression: - expr.type = Syntax.ObjectPattern; - for (i = 0; i < expr.properties.length; i++) { - reinterpretExpressionAsPattern(expr.properties[i].value); - } - break; - case Syntax.AssignmentExpression: - expr.type = Syntax.AssignmentPattern; - reinterpretExpressionAsPattern(expr.left); - break; - default: - // Allow other node type for tolerant parsing. - break; - } - } - - // ECMA-262 12.2.9 Template Literals - - function parseTemplateElement(option) { - var node, token; - - if (lookahead.type !== Token.Template || (option.head && !lookahead.head)) { - throwUnexpectedToken(); - } - - node = new Node(); - token = lex(); - - return node.finishTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail); - } - - function parseTemplateLiteral() { - var quasi, quasis, expressions, node = new Node(); - - quasi = parseTemplateElement({ head: true }); - quasis = [quasi]; - expressions = []; - - while (!quasi.tail) { - expressions.push(parseExpression()); - quasi = parseTemplateElement({ head: false }); - quasis.push(quasi); - } - - return node.finishTemplateLiteral(quasis, expressions); - } - - // ECMA-262 12.2.10 The Grouping Operator - - function parseGroupExpression() { - var expr, expressions, startToken, i, params = []; - - expect('('); - - if (match(')')) { - lex(); - if (!match('=>')) { - expect('=>'); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [], - rawParams: [] - }; - } - - startToken = lookahead; - if (match('...')) { - expr = parseRestElement(params); - expect(')'); - if (!match('=>')) { - expect('=>'); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [expr] - }; - } - - isBindingElement = true; - expr = inheritCoverGrammar(parseAssignmentExpression); - - if (match(',')) { - isAssignmentTarget = false; - expressions = [expr]; - - while (startIndex < length) { - if (!match(',')) { - break; - } - lex(); - - if (match('...')) { - if (!isBindingElement) { - throwUnexpectedToken(lookahead); - } - expressions.push(parseRestElement(params)); - expect(')'); - if (!match('=>')) { - expect('=>'); - } - isBindingElement = false; - for (i = 0; i < expressions.length; i++) { - reinterpretExpressionAsPattern(expressions[i]); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: expressions - }; - } - - expressions.push(inheritCoverGrammar(parseAssignmentExpression)); - } - - expr = new WrappingNode(startToken).finishSequenceExpression(expressions); - } - - - expect(')'); - - if (match('=>')) { - if (expr.type === Syntax.Identifier && expr.name === 'yield') { - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [expr] - }; - } - - if (!isBindingElement) { - throwUnexpectedToken(lookahead); - } - - if (expr.type === Syntax.SequenceExpression) { - for (i = 0; i < expr.expressions.length; i++) { - reinterpretExpressionAsPattern(expr.expressions[i]); - } - } else { - reinterpretExpressionAsPattern(expr); - } - - expr = { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: expr.type === Syntax.SequenceExpression ? expr.expressions : [expr] - }; - } - isBindingElement = false; - return expr; - } - - - // ECMA-262 12.2 Primary Expressions - - function parsePrimaryExpression() { - var type, token, expr, node; - - if (match('(')) { - isBindingElement = false; - return inheritCoverGrammar(parseGroupExpression); - } - - if (match('[')) { - return inheritCoverGrammar(parseArrayInitializer); - } - - if (match('{')) { - return inheritCoverGrammar(parseObjectInitializer); - } - - type = lookahead.type; - node = new Node(); - - if (type === Token.Identifier) { - if (state.sourceType === 'module' && lookahead.value === 'await') { - tolerateUnexpectedToken(lookahead); - } - expr = node.finishIdentifier(lex().value); - } else if (type === Token.StringLiteral || type === Token.NumericLiteral) { - isAssignmentTarget = isBindingElement = false; - if (strict && lookahead.octal) { - tolerateUnexpectedToken(lookahead, Messages.StrictOctalLiteral); - } - expr = node.finishLiteral(lex()); - } else if (type === Token.Keyword) { - if (!strict && state.allowYield && matchKeyword('yield')) { - return parseNonComputedProperty(); - } - if (!strict && matchKeyword('let')) { - return node.finishIdentifier(lex().value); - } - isAssignmentTarget = isBindingElement = false; - if (matchKeyword('function')) { - return parseFunctionExpression(); - } - if (matchKeyword('this')) { - lex(); - return node.finishThisExpression(); - } - if (matchKeyword('class')) { - return parseClassExpression(); - } - throwUnexpectedToken(lex()); - } else if (type === Token.BooleanLiteral) { - isAssignmentTarget = isBindingElement = false; - token = lex(); - token.value = (token.value === 'true'); - expr = node.finishLiteral(token); - } else if (type === Token.NullLiteral) { - isAssignmentTarget = isBindingElement = false; - token = lex(); - token.value = null; - expr = node.finishLiteral(token); - } else if (match('/') || match('/=')) { - isAssignmentTarget = isBindingElement = false; - index = startIndex; - - if (typeof extra.tokens !== 'undefined') { - token = collectRegex(); - } else { - token = scanRegExp(); - } - lex(); - expr = node.finishLiteral(token); - } else if (type === Token.Template) { - expr = parseTemplateLiteral(); - } else { - throwUnexpectedToken(lex()); - } - - return expr; - } - - // ECMA-262 12.3 Left-Hand-Side Expressions - - function parseArguments() { - var args = [], expr; - - expect('('); - - if (!match(')')) { - while (startIndex < length) { - if (match('...')) { - expr = new Node(); - lex(); - expr.finishSpreadElement(isolateCoverGrammar(parseAssignmentExpression)); - } else { - expr = isolateCoverGrammar(parseAssignmentExpression); - } - args.push(expr); - if (match(')')) { - break; - } - expectCommaSeparator(); - } - } - - expect(')'); - - return args; - } - - function parseNonComputedProperty() { - var token, node = new Node(); - - token = lex(); - - if (!isIdentifierName(token)) { - throwUnexpectedToken(token); - } - - return node.finishIdentifier(token.value); - } - - function parseNonComputedMember() { - expect('.'); - - return parseNonComputedProperty(); - } - - function parseComputedMember() { - var expr; - - expect('['); - - expr = isolateCoverGrammar(parseExpression); - - expect(']'); - - return expr; - } - - // ECMA-262 12.3.3 The new Operator - - function parseNewExpression() { - var callee, args, node = new Node(); - - expectKeyword('new'); - - if (match('.')) { - lex(); - if (lookahead.type === Token.Identifier && lookahead.value === 'target') { - if (state.inFunctionBody) { - lex(); - return node.finishMetaProperty('new', 'target'); - } - } - throwUnexpectedToken(lookahead); - } - - callee = isolateCoverGrammar(parseLeftHandSideExpression); - args = match('(') ? parseArguments() : []; - - isAssignmentTarget = isBindingElement = false; - - return node.finishNewExpression(callee, args); - } - - // ECMA-262 12.3.4 Function Calls - - function parseLeftHandSideExpressionAllowCall() { - var quasi, expr, args, property, startToken, previousAllowIn = state.allowIn; - - startToken = lookahead; - state.allowIn = true; - - if (matchKeyword('super') && state.inFunctionBody) { - expr = new Node(); - lex(); - expr = expr.finishSuper(); - if (!match('(') && !match('.') && !match('[')) { - throwUnexpectedToken(lookahead); - } - } else { - expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression); - } - - for (;;) { - if (match('.')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseNonComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); - } else if (match('(')) { - isBindingElement = false; - isAssignmentTarget = false; - args = parseArguments(); - expr = new WrappingNode(startToken).finishCallExpression(expr, args); - } else if (match('[')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); - } else if (lookahead.type === Token.Template && lookahead.head) { - quasi = parseTemplateLiteral(); - expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi); - } else { - break; - } - } - state.allowIn = previousAllowIn; - - return expr; - } - - // ECMA-262 12.3 Left-Hand-Side Expressions - - function parseLeftHandSideExpression() { - var quasi, expr, property, startToken; - assert(state.allowIn, 'callee of new expression always allow in keyword.'); - - startToken = lookahead; - - if (matchKeyword('super') && state.inFunctionBody) { - expr = new Node(); - lex(); - expr = expr.finishSuper(); - if (!match('[') && !match('.')) { - throwUnexpectedToken(lookahead); - } - } else { - expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression); - } - - for (;;) { - if (match('[')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); - } else if (match('.')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseNonComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); - } else if (lookahead.type === Token.Template && lookahead.head) { - quasi = parseTemplateLiteral(); - expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi); - } else { - break; - } - } - return expr; - } - - // ECMA-262 12.4 Postfix Expressions - - function parsePostfixExpression() { - var expr, token, startToken = lookahead; - - expr = inheritCoverGrammar(parseLeftHandSideExpressionAllowCall); - - if (!hasLineTerminator && lookahead.type === Token.Punctuator) { - if (match('++') || match('--')) { - // ECMA-262 11.3.1, 11.3.2 - if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { - tolerateError(Messages.StrictLHSPostfix); - } - - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - - isAssignmentTarget = isBindingElement = false; - - token = lex(); - expr = new WrappingNode(startToken).finishPostfixExpression(token.value, expr); - } - } - - return expr; - } - - // ECMA-262 12.5 Unary Operators - - function parseUnaryExpression() { - var token, expr, startToken; - - if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) { - expr = parsePostfixExpression(); - } else if (match('++') || match('--')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - // ECMA-262 11.4.4, 11.4.5 - if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { - tolerateError(Messages.StrictLHSPrefix); - } - - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - isAssignmentTarget = isBindingElement = false; - } else if (match('+') || match('-') || match('~') || match('!')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - isAssignmentTarget = isBindingElement = false; - } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) { - tolerateError(Messages.StrictDelete); - } - isAssignmentTarget = isBindingElement = false; - } else { - expr = parsePostfixExpression(); - } - - return expr; - } - - function binaryPrecedence(token, allowIn) { - var prec = 0; - - if (token.type !== Token.Punctuator && token.type !== Token.Keyword) { - return 0; - } - - switch (token.value) { - case '||': - prec = 1; - break; - - case '&&': - prec = 2; - break; - - case '|': - prec = 3; - break; - - case '^': - prec = 4; - break; - - case '&': - prec = 5; - break; - - case '==': - case '!=': - case '===': - case '!==': - prec = 6; - break; - - case '<': - case '>': - case '<=': - case '>=': - case 'instanceof': - prec = 7; - break; - - case 'in': - prec = allowIn ? 7 : 0; - break; - - case '<<': - case '>>': - case '>>>': - prec = 8; - break; - - case '+': - case '-': - prec = 9; - break; - - case '*': - case '/': - case '%': - prec = 11; - break; - - default: - break; - } - - return prec; - } - - // ECMA-262 12.6 Multiplicative Operators - // ECMA-262 12.7 Additive Operators - // ECMA-262 12.8 Bitwise Shift Operators - // ECMA-262 12.9 Relational Operators - // ECMA-262 12.10 Equality Operators - // ECMA-262 12.11 Binary Bitwise Operators - // ECMA-262 12.12 Binary Logical Operators - - function parseBinaryExpression() { - var marker, markers, expr, token, prec, stack, right, operator, left, i; - - marker = lookahead; - left = inheritCoverGrammar(parseUnaryExpression); - - token = lookahead; - prec = binaryPrecedence(token, state.allowIn); - if (prec === 0) { - return left; - } - isAssignmentTarget = isBindingElement = false; - token.prec = prec; - lex(); - - markers = [marker, lookahead]; - right = isolateCoverGrammar(parseUnaryExpression); - - stack = [left, token, right]; - - while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) { - - // Reduce: make a binary expression from the three topmost entries. - while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) { - right = stack.pop(); - operator = stack.pop().value; - left = stack.pop(); - markers.pop(); - expr = new WrappingNode(markers[markers.length - 1]).finishBinaryExpression(operator, left, right); - stack.push(expr); - } - - // Shift. - token = lex(); - token.prec = prec; - stack.push(token); - markers.push(lookahead); - expr = isolateCoverGrammar(parseUnaryExpression); - stack.push(expr); - } - - // Final reduce to clean-up the stack. - i = stack.length - 1; - expr = stack[i]; - markers.pop(); - while (i > 1) { - expr = new WrappingNode(markers.pop()).finishBinaryExpression(stack[i - 1].value, stack[i - 2], expr); - i -= 2; - } - - return expr; - } - - - // ECMA-262 12.13 Conditional Operator - - function parseConditionalExpression() { - var expr, previousAllowIn, consequent, alternate, startToken; - - startToken = lookahead; - - expr = inheritCoverGrammar(parseBinaryExpression); - if (match('?')) { - lex(); - previousAllowIn = state.allowIn; - state.allowIn = true; - consequent = isolateCoverGrammar(parseAssignmentExpression); - state.allowIn = previousAllowIn; - expect(':'); - alternate = isolateCoverGrammar(parseAssignmentExpression); - - expr = new WrappingNode(startToken).finishConditionalExpression(expr, consequent, alternate); - isAssignmentTarget = isBindingElement = false; - } - - return expr; - } - - // ECMA-262 14.2 Arrow Function Definitions - - function parseConciseBody() { - if (match('{')) { - return parseFunctionSourceElements(); - } - return isolateCoverGrammar(parseAssignmentExpression); - } - - function checkPatternParam(options, param) { - var i; - switch (param.type) { - case Syntax.Identifier: - validateParam(options, param, param.name); - break; - case Syntax.RestElement: - checkPatternParam(options, param.argument); - break; - case Syntax.AssignmentPattern: - checkPatternParam(options, param.left); - break; - case Syntax.ArrayPattern: - for (i = 0; i < param.elements.length; i++) { - if (param.elements[i] !== null) { - checkPatternParam(options, param.elements[i]); - } - } - break; - case Syntax.YieldExpression: - break; - default: - assert(param.type === Syntax.ObjectPattern, 'Invalid type'); - for (i = 0; i < param.properties.length; i++) { - checkPatternParam(options, param.properties[i].value); - } - break; - } - } - function reinterpretAsCoverFormalsList(expr) { - var i, len, param, params, defaults, defaultCount, options, token; - - defaults = []; - defaultCount = 0; - params = [expr]; - - switch (expr.type) { - case Syntax.Identifier: - break; - case PlaceHolders.ArrowParameterPlaceHolder: - params = expr.params; - break; - default: - return null; - } - - options = { - paramSet: {} - }; - - for (i = 0, len = params.length; i < len; i += 1) { - param = params[i]; - switch (param.type) { - case Syntax.AssignmentPattern: - params[i] = param.left; - if (param.right.type === Syntax.YieldExpression) { - if (param.right.argument) { - throwUnexpectedToken(lookahead); - } - param.right.type = Syntax.Identifier; - param.right.name = 'yield'; - delete param.right.argument; - delete param.right.delegate; - } - defaults.push(param.right); - ++defaultCount; - checkPatternParam(options, param.left); - break; - default: - checkPatternParam(options, param); - params[i] = param; - defaults.push(null); - break; - } - } - - if (strict || !state.allowYield) { - for (i = 0, len = params.length; i < len; i += 1) { - param = params[i]; - if (param.type === Syntax.YieldExpression) { - throwUnexpectedToken(lookahead); - } - } - } - - if (options.message === Messages.StrictParamDupe) { - token = strict ? options.stricted : options.firstRestricted; - throwUnexpectedToken(token, options.message); - } - - if (defaultCount === 0) { - defaults = []; - } - - return { - params: params, - defaults: defaults, - stricted: options.stricted, - firstRestricted: options.firstRestricted, - message: options.message - }; - } - - function parseArrowFunctionExpression(options, node) { - var previousStrict, previousAllowYield, body; - - if (hasLineTerminator) { - tolerateUnexpectedToken(lookahead); - } - expect('=>'); - - previousStrict = strict; - previousAllowYield = state.allowYield; - state.allowYield = true; - - body = parseConciseBody(); - - if (strict && options.firstRestricted) { - throwUnexpectedToken(options.firstRestricted, options.message); - } - if (strict && options.stricted) { - tolerateUnexpectedToken(options.stricted, options.message); - } - - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishArrowFunctionExpression(options.params, options.defaults, body, body.type !== Syntax.BlockStatement); - } - - // ECMA-262 14.4 Yield expression - - function parseYieldExpression() { - var argument, expr, delegate, previousAllowYield; - - argument = null; - expr = new Node(); - delegate = false; - - expectKeyword('yield'); - - if (!hasLineTerminator) { - previousAllowYield = state.allowYield; - state.allowYield = false; - delegate = match('*'); - if (delegate) { - lex(); - argument = parseAssignmentExpression(); - } else { - if (!match(';') && !match('}') && !match(')') && lookahead.type !== Token.EOF) { - argument = parseAssignmentExpression(); - } - } - state.allowYield = previousAllowYield; - } - - return expr.finishYieldExpression(argument, delegate); - } - - // ECMA-262 12.14 Assignment Operators - - function parseAssignmentExpression() { - var token, expr, right, list, startToken; - - startToken = lookahead; - token = lookahead; - - if (!state.allowYield && matchKeyword('yield')) { - return parseYieldExpression(); - } - - expr = parseConditionalExpression(); - - if (expr.type === PlaceHolders.ArrowParameterPlaceHolder || match('=>')) { - isAssignmentTarget = isBindingElement = false; - list = reinterpretAsCoverFormalsList(expr); - - if (list) { - firstCoverInitializedNameError = null; - return parseArrowFunctionExpression(list, new WrappingNode(startToken)); - } - - return expr; - } - - if (matchAssign()) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - - // ECMA-262 12.1.1 - if (strict && expr.type === Syntax.Identifier) { - if (isRestrictedWord(expr.name)) { - tolerateUnexpectedToken(token, Messages.StrictLHSAssignment); - } - if (isStrictModeReservedWord(expr.name)) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } - } - - if (!match('=')) { - isAssignmentTarget = isBindingElement = false; - } else { - reinterpretExpressionAsPattern(expr); - } - - token = lex(); - right = isolateCoverGrammar(parseAssignmentExpression); - expr = new WrappingNode(startToken).finishAssignmentExpression(token.value, expr, right); - firstCoverInitializedNameError = null; - } - - return expr; - } - - // ECMA-262 12.15 Comma Operator - - function parseExpression() { - var expr, startToken = lookahead, expressions; - - expr = isolateCoverGrammar(parseAssignmentExpression); - - if (match(',')) { - expressions = [expr]; - - while (startIndex < length) { - if (!match(',')) { - break; - } - lex(); - expressions.push(isolateCoverGrammar(parseAssignmentExpression)); - } - - expr = new WrappingNode(startToken).finishSequenceExpression(expressions); - } - - return expr; - } - - // ECMA-262 13.2 Block - - function parseStatementListItem() { - if (lookahead.type === Token.Keyword) { - switch (lookahead.value) { - case 'export': - if (state.sourceType !== 'module') { - tolerateUnexpectedToken(lookahead, Messages.IllegalExportDeclaration); - } - return parseExportDeclaration(); - case 'import': - if (state.sourceType !== 'module') { - tolerateUnexpectedToken(lookahead, Messages.IllegalImportDeclaration); - } - return parseImportDeclaration(); - case 'const': - return parseLexicalDeclaration({inFor: false}); - case 'function': - return parseFunctionDeclaration(new Node()); - case 'class': - return parseClassDeclaration(); - } - } - - if (matchKeyword('let') && isLexicalDeclaration()) { - return parseLexicalDeclaration({inFor: false}); - } - - return parseStatement(); - } - - function parseStatementList() { - var list = []; - while (startIndex < length) { - if (match('}')) { - break; - } - list.push(parseStatementListItem()); - } - - return list; - } - - function parseBlock() { - var block, node = new Node(); - - expect('{'); - - block = parseStatementList(); - - expect('}'); - - return node.finishBlockStatement(block); - } - - // ECMA-262 13.3.2 Variable Statement - - function parseVariableIdentifier(kind) { - var token, node = new Node(); - - token = lex(); - - if (token.type === Token.Keyword && token.value === 'yield') { - if (strict) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } if (!state.allowYield) { - throwUnexpectedToken(token); - } - } else if (token.type !== Token.Identifier) { - if (strict && token.type === Token.Keyword && isStrictModeReservedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } else { - if (strict || token.value !== 'let' || kind !== 'var') { - throwUnexpectedToken(token); - } - } - } else if (state.sourceType === 'module' && token.type === Token.Identifier && token.value === 'await') { - tolerateUnexpectedToken(token); - } - - return node.finishIdentifier(token.value); - } - - function parseVariableDeclaration(options) { - var init = null, id, node = new Node(), params = []; - - id = parsePattern(params, 'var'); - - // ECMA-262 12.2.1 - if (strict && isRestrictedWord(id.name)) { - tolerateError(Messages.StrictVarName); - } - - if (match('=')) { - lex(); - init = isolateCoverGrammar(parseAssignmentExpression); - } else if (id.type !== Syntax.Identifier && !options.inFor) { - expect('='); - } - - return node.finishVariableDeclarator(id, init); - } - - function parseVariableDeclarationList(options) { - var opt, list; - - opt = { inFor: options.inFor }; - list = [parseVariableDeclaration(opt)]; - - while (match(',')) { - lex(); - list.push(parseVariableDeclaration(opt)); - } - - return list; - } - - function parseVariableStatement(node) { - var declarations; - - expectKeyword('var'); - - declarations = parseVariableDeclarationList({ inFor: false }); - - consumeSemicolon(); - - return node.finishVariableDeclaration(declarations); - } - - // ECMA-262 13.3.1 Let and Const Declarations - - function parseLexicalBinding(kind, options) { - var init = null, id, node = new Node(), params = []; - - id = parsePattern(params, kind); - - // ECMA-262 12.2.1 - if (strict && id.type === Syntax.Identifier && isRestrictedWord(id.name)) { - tolerateError(Messages.StrictVarName); - } - - if (kind === 'const') { - if (!matchKeyword('in') && !matchContextualKeyword('of')) { - expect('='); - init = isolateCoverGrammar(parseAssignmentExpression); - } - } else if ((!options.inFor && id.type !== Syntax.Identifier) || match('=')) { - expect('='); - init = isolateCoverGrammar(parseAssignmentExpression); - } - - return node.finishVariableDeclarator(id, init); - } - - function parseBindingList(kind, options) { - var list = [parseLexicalBinding(kind, options)]; - - while (match(',')) { - lex(); - list.push(parseLexicalBinding(kind, options)); - } - - return list; - } - - - function tokenizerState() { - return { - index: index, - lineNumber: lineNumber, - lineStart: lineStart, - hasLineTerminator: hasLineTerminator, - lastIndex: lastIndex, - lastLineNumber: lastLineNumber, - lastLineStart: lastLineStart, - startIndex: startIndex, - startLineNumber: startLineNumber, - startLineStart: startLineStart, - lookahead: lookahead, - tokenCount: extra.tokens ? extra.tokens.length : 0 - }; - } - - function resetTokenizerState(ts) { - index = ts.index; - lineNumber = ts.lineNumber; - lineStart = ts.lineStart; - hasLineTerminator = ts.hasLineTerminator; - lastIndex = ts.lastIndex; - lastLineNumber = ts.lastLineNumber; - lastLineStart = ts.lastLineStart; - startIndex = ts.startIndex; - startLineNumber = ts.startLineNumber; - startLineStart = ts.startLineStart; - lookahead = ts.lookahead; - if (extra.tokens) { - extra.tokens.splice(ts.tokenCount, extra.tokens.length); - } - } - - function isLexicalDeclaration() { - var lexical, ts; - - ts = tokenizerState(); - - lex(); - lexical = (lookahead.type === Token.Identifier) || match('[') || match('{') || - matchKeyword('let') || matchKeyword('yield'); - - resetTokenizerState(ts); - - return lexical; - } - - function parseLexicalDeclaration(options) { - var kind, declarations, node = new Node(); - - kind = lex().value; - assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const'); - - declarations = parseBindingList(kind, options); - - consumeSemicolon(); - - return node.finishLexicalDeclaration(declarations, kind); - } - - function parseRestElement(params) { - var param, node = new Node(); - - lex(); - - if (match('{')) { - throwError(Messages.ObjectPatternAsRestParameter); - } - - params.push(lookahead); - - param = parseVariableIdentifier(); - - if (match('=')) { - throwError(Messages.DefaultRestParameter); - } - - if (!match(')')) { - throwError(Messages.ParameterAfterRestParameter); - } - - return node.finishRestElement(param); - } - - // ECMA-262 13.4 Empty Statement - - function parseEmptyStatement(node) { - expect(';'); - return node.finishEmptyStatement(); - } - - // ECMA-262 12.4 Expression Statement - - function parseExpressionStatement(node) { - var expr = parseExpression(); - consumeSemicolon(); - return node.finishExpressionStatement(expr); - } - - // ECMA-262 13.6 If statement - - function parseIfStatement(node) { - var test, consequent, alternate; - - expectKeyword('if'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - consequent = parseStatement(); - - if (matchKeyword('else')) { - lex(); - alternate = parseStatement(); - } else { - alternate = null; - } - - return node.finishIfStatement(test, consequent, alternate); - } - - // ECMA-262 13.7 Iteration Statements - - function parseDoWhileStatement(node) { - var body, test, oldInIteration; - - expectKeyword('do'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = parseStatement(); - - state.inIteration = oldInIteration; - - expectKeyword('while'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - if (match(';')) { - lex(); - } - - return node.finishDoWhileStatement(body, test); - } - - function parseWhileStatement(node) { - var test, body, oldInIteration; - - expectKeyword('while'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = parseStatement(); - - state.inIteration = oldInIteration; - - return node.finishWhileStatement(test, body); - } - - function parseForStatement(node) { - var init, forIn, initSeq, initStartToken, test, update, left, right, kind, declarations, - body, oldInIteration, previousAllowIn = state.allowIn; - - init = test = update = null; - forIn = true; - - expectKeyword('for'); - - expect('('); - - if (match(';')) { - lex(); - } else { - if (matchKeyword('var')) { - init = new Node(); - lex(); - - state.allowIn = false; - declarations = parseVariableDeclarationList({ inFor: true }); - state.allowIn = previousAllowIn; - - if (declarations.length === 1 && matchKeyword('in')) { - init = init.finishVariableDeclaration(declarations); - lex(); - left = init; - right = parseExpression(); - init = null; - } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) { - init = init.finishVariableDeclaration(declarations); - lex(); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - init = init.finishVariableDeclaration(declarations); - expect(';'); - } - } else if (matchKeyword('const') || matchKeyword('let')) { - init = new Node(); - kind = lex().value; - - if (!strict && lookahead.value === 'in') { - init = init.finishIdentifier(kind); - lex(); - left = init; - right = parseExpression(); - init = null; - } else { - state.allowIn = false; - declarations = parseBindingList(kind, {inFor: true}); - state.allowIn = previousAllowIn; - - if (declarations.length === 1 && declarations[0].init === null && matchKeyword('in')) { - init = init.finishLexicalDeclaration(declarations, kind); - lex(); - left = init; - right = parseExpression(); - init = null; - } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) { - init = init.finishLexicalDeclaration(declarations, kind); - lex(); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - consumeSemicolon(); - init = init.finishLexicalDeclaration(declarations, kind); - } - } - } else { - initStartToken = lookahead; - state.allowIn = false; - init = inheritCoverGrammar(parseAssignmentExpression); - state.allowIn = previousAllowIn; - - if (matchKeyword('in')) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInForIn); - } - - lex(); - reinterpretExpressionAsPattern(init); - left = init; - right = parseExpression(); - init = null; - } else if (matchContextualKeyword('of')) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInForLoop); - } - - lex(); - reinterpretExpressionAsPattern(init); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - if (match(',')) { - initSeq = [init]; - while (match(',')) { - lex(); - initSeq.push(isolateCoverGrammar(parseAssignmentExpression)); - } - init = new WrappingNode(initStartToken).finishSequenceExpression(initSeq); - } - expect(';'); - } - } - } - - if (typeof left === 'undefined') { - - if (!match(';')) { - test = parseExpression(); - } - expect(';'); - - if (!match(')')) { - update = parseExpression(); - } - } - - expect(')'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = isolateCoverGrammar(parseStatement); - - state.inIteration = oldInIteration; - - return (typeof left === 'undefined') ? - node.finishForStatement(init, test, update, body) : - forIn ? node.finishForInStatement(left, right, body) : - node.finishForOfStatement(left, right, body); - } - - // ECMA-262 13.8 The continue statement - - function parseContinueStatement(node) { - var label = null, key; - - expectKeyword('continue'); - - // Optimize the most common form: 'continue;'. - if (source.charCodeAt(startIndex) === 0x3B) { - lex(); - - if (!state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(null); - } - - if (hasLineTerminator) { - if (!state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(null); - } - - if (lookahead.type === Token.Identifier) { - label = parseVariableIdentifier(); - - key = '$' + label.name; - if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.UnknownLabel, label.name); - } - } - - consumeSemicolon(); - - if (label === null && !state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(label); - } - - // ECMA-262 13.9 The break statement - - function parseBreakStatement(node) { - var label = null, key; - - expectKeyword('break'); - - // Catch the very common case first: immediately a semicolon (U+003B). - if (source.charCodeAt(lastIndex) === 0x3B) { - lex(); - - if (!(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - - return node.finishBreakStatement(null); - } - - if (hasLineTerminator) { - if (!(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - } else if (lookahead.type === Token.Identifier) { - label = parseVariableIdentifier(); - - key = '$' + label.name; - if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.UnknownLabel, label.name); - } - } - - consumeSemicolon(); - - if (label === null && !(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - - return node.finishBreakStatement(label); - } - - // ECMA-262 13.10 The return statement - - function parseReturnStatement(node) { - var argument = null; - - expectKeyword('return'); - - if (!state.inFunctionBody) { - tolerateError(Messages.IllegalReturn); - } - - // 'return' followed by a space and an identifier is very common. - if (source.charCodeAt(lastIndex) === 0x20) { - if (isIdentifierStart(source.charCodeAt(lastIndex + 1))) { - argument = parseExpression(); - consumeSemicolon(); - return node.finishReturnStatement(argument); - } - } - - if (hasLineTerminator) { - // HACK - return node.finishReturnStatement(null); - } - - if (!match(';')) { - if (!match('}') && lookahead.type !== Token.EOF) { - argument = parseExpression(); - } - } - - consumeSemicolon(); - - return node.finishReturnStatement(argument); - } - - // ECMA-262 13.11 The with statement - - function parseWithStatement(node) { - var object, body; - - if (strict) { - tolerateError(Messages.StrictModeWith); - } - - expectKeyword('with'); - - expect('('); - - object = parseExpression(); - - expect(')'); - - body = parseStatement(); - - return node.finishWithStatement(object, body); - } - - // ECMA-262 13.12 The switch statement - - function parseSwitchCase() { - var test, consequent = [], statement, node = new Node(); - - if (matchKeyword('default')) { - lex(); - test = null; - } else { - expectKeyword('case'); - test = parseExpression(); - } - expect(':'); - - while (startIndex < length) { - if (match('}') || matchKeyword('default') || matchKeyword('case')) { - break; - } - statement = parseStatementListItem(); - consequent.push(statement); - } - - return node.finishSwitchCase(test, consequent); - } - - function parseSwitchStatement(node) { - var discriminant, cases, clause, oldInSwitch, defaultFound; - - expectKeyword('switch'); - - expect('('); - - discriminant = parseExpression(); - - expect(')'); - - expect('{'); - - cases = []; - - if (match('}')) { - lex(); - return node.finishSwitchStatement(discriminant, cases); - } - - oldInSwitch = state.inSwitch; - state.inSwitch = true; - defaultFound = false; - - while (startIndex < length) { - if (match('}')) { - break; - } - clause = parseSwitchCase(); - if (clause.test === null) { - if (defaultFound) { - throwError(Messages.MultipleDefaultsInSwitch); - } - defaultFound = true; - } - cases.push(clause); - } - - state.inSwitch = oldInSwitch; - - expect('}'); - - return node.finishSwitchStatement(discriminant, cases); - } - - // ECMA-262 13.14 The throw statement - - function parseThrowStatement(node) { - var argument; - - expectKeyword('throw'); - - if (hasLineTerminator) { - throwError(Messages.NewlineAfterThrow); - } - - argument = parseExpression(); - - consumeSemicolon(); - - return node.finishThrowStatement(argument); - } - - // ECMA-262 13.15 The try statement - - function parseCatchClause() { - var param, params = [], paramMap = {}, key, i, body, node = new Node(); - - expectKeyword('catch'); - - expect('('); - if (match(')')) { - throwUnexpectedToken(lookahead); - } - - param = parsePattern(params); - for (i = 0; i < params.length; i++) { - key = '$' + params[i].value; - if (Object.prototype.hasOwnProperty.call(paramMap, key)) { - tolerateError(Messages.DuplicateBinding, params[i].value); - } - paramMap[key] = true; - } - - // ECMA-262 12.14.1 - if (strict && isRestrictedWord(param.name)) { - tolerateError(Messages.StrictCatchVariable); - } - - expect(')'); - body = parseBlock(); - return node.finishCatchClause(param, body); - } - - function parseTryStatement(node) { - var block, handler = null, finalizer = null; - - expectKeyword('try'); - - block = parseBlock(); - - if (matchKeyword('catch')) { - handler = parseCatchClause(); - } - - if (matchKeyword('finally')) { - lex(); - finalizer = parseBlock(); - } - - if (!handler && !finalizer) { - throwError(Messages.NoCatchOrFinally); - } - - return node.finishTryStatement(block, handler, finalizer); - } - - // ECMA-262 13.16 The debugger statement - - function parseDebuggerStatement(node) { - expectKeyword('debugger'); - - consumeSemicolon(); - - return node.finishDebuggerStatement(); - } - - // 13 Statements - - function parseStatement() { - var type = lookahead.type, - expr, - labeledBody, - key, - node; - - if (type === Token.EOF) { - throwUnexpectedToken(lookahead); - } - - if (type === Token.Punctuator && lookahead.value === '{') { - return parseBlock(); - } - isAssignmentTarget = isBindingElement = true; - node = new Node(); - - if (type === Token.Punctuator) { - switch (lookahead.value) { - case ';': - return parseEmptyStatement(node); - case '(': - return parseExpressionStatement(node); - default: - break; - } - } else if (type === Token.Keyword) { - switch (lookahead.value) { - case 'break': - return parseBreakStatement(node); - case 'continue': - return parseContinueStatement(node); - case 'debugger': - return parseDebuggerStatement(node); - case 'do': - return parseDoWhileStatement(node); - case 'for': - return parseForStatement(node); - case 'function': - return parseFunctionDeclaration(node); - case 'if': - return parseIfStatement(node); - case 'return': - return parseReturnStatement(node); - case 'switch': - return parseSwitchStatement(node); - case 'throw': - return parseThrowStatement(node); - case 'try': - return parseTryStatement(node); - case 'var': - return parseVariableStatement(node); - case 'while': - return parseWhileStatement(node); - case 'with': - return parseWithStatement(node); - default: - break; - } - } - - expr = parseExpression(); - - // ECMA-262 12.12 Labelled Statements - if ((expr.type === Syntax.Identifier) && match(':')) { - lex(); - - key = '$' + expr.name; - if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.Redeclaration, 'Label', expr.name); - } - - state.labelSet[key] = true; - labeledBody = parseStatement(); - delete state.labelSet[key]; - return node.finishLabeledStatement(expr, labeledBody); - } - - consumeSemicolon(); - - return node.finishExpressionStatement(expr); - } - - // ECMA-262 14.1 Function Definition - - function parseFunctionSourceElements() { - var statement, body = [], token, directive, firstRestricted, - oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, - node = new Node(); - - expect('{'); - - while (startIndex < length) { - if (lookahead.type !== Token.StringLiteral) { - break; - } - token = lookahead; - - statement = parseStatementListItem(); - body.push(statement); - if (statement.expression.type !== Syntax.Literal) { - // this is not directive - break; - } - directive = source.slice(token.start + 1, token.end - 1); - if (directive === 'use strict') { - strict = true; - if (firstRestricted) { - tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); - } - } else { - if (!firstRestricted && token.octal) { - firstRestricted = token; - } - } - } - - oldLabelSet = state.labelSet; - oldInIteration = state.inIteration; - oldInSwitch = state.inSwitch; - oldInFunctionBody = state.inFunctionBody; - - state.labelSet = {}; - state.inIteration = false; - state.inSwitch = false; - state.inFunctionBody = true; - - while (startIndex < length) { - if (match('}')) { - break; - } - body.push(parseStatementListItem()); - } - - expect('}'); - - state.labelSet = oldLabelSet; - state.inIteration = oldInIteration; - state.inSwitch = oldInSwitch; - state.inFunctionBody = oldInFunctionBody; - - return node.finishBlockStatement(body); - } - - function validateParam(options, param, name) { - var key = '$' + name; - if (strict) { - if (isRestrictedWord(name)) { - options.stricted = param; - options.message = Messages.StrictParamName; - } - if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { - options.stricted = param; - options.message = Messages.StrictParamDupe; - } - } else if (!options.firstRestricted) { - if (isRestrictedWord(name)) { - options.firstRestricted = param; - options.message = Messages.StrictParamName; - } else if (isStrictModeReservedWord(name)) { - options.firstRestricted = param; - options.message = Messages.StrictReservedWord; - } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { - options.stricted = param; - options.message = Messages.StrictParamDupe; - } - } - options.paramSet[key] = true; - } - - function parseParam(options) { - var token, param, params = [], i, def; - - token = lookahead; - if (token.value === '...') { - param = parseRestElement(params); - validateParam(options, param.argument, param.argument.name); - options.params.push(param); - options.defaults.push(null); - return false; - } - - param = parsePatternWithDefault(params); - for (i = 0; i < params.length; i++) { - validateParam(options, params[i], params[i].value); - } - - if (param.type === Syntax.AssignmentPattern) { - def = param.right; - param = param.left; - ++options.defaultCount; - } - - options.params.push(param); - options.defaults.push(def); - - return !match(')'); - } - - function parseParams(firstRestricted) { - var options; - - options = { - params: [], - defaultCount: 0, - defaults: [], - firstRestricted: firstRestricted - }; - - expect('('); - - if (!match(')')) { - options.paramSet = {}; - while (startIndex < length) { - if (!parseParam(options)) { - break; - } - expect(','); - } - } - - expect(')'); - - if (options.defaultCount === 0) { - options.defaults = []; - } - - return { - params: options.params, - defaults: options.defaults, - stricted: options.stricted, - firstRestricted: options.firstRestricted, - message: options.message - }; - } - - function parseFunctionDeclaration(node, identifierIsOptional) { - var id = null, params = [], defaults = [], body, token, stricted, tmp, firstRestricted, message, previousStrict, - isGenerator, previousAllowYield; - - previousAllowYield = state.allowYield; - - expectKeyword('function'); - - isGenerator = match('*'); - if (isGenerator) { - lex(); - } - - if (!identifierIsOptional || !match('(')) { - token = lookahead; - id = parseVariableIdentifier(); - if (strict) { - if (isRestrictedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictFunctionName); - } - } else { - if (isRestrictedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictFunctionName; - } else if (isStrictModeReservedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictReservedWord; - } - } - } - - state.allowYield = !isGenerator; - tmp = parseParams(firstRestricted); - params = tmp.params; - defaults = tmp.defaults; - stricted = tmp.stricted; - firstRestricted = tmp.firstRestricted; - if (tmp.message) { - message = tmp.message; - } - - - previousStrict = strict; - body = parseFunctionSourceElements(); - if (strict && firstRestricted) { - throwUnexpectedToken(firstRestricted, message); - } - if (strict && stricted) { - tolerateUnexpectedToken(stricted, message); - } - - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishFunctionDeclaration(id, params, defaults, body, isGenerator); - } - - function parseFunctionExpression() { - var token, id = null, stricted, firstRestricted, message, tmp, - params = [], defaults = [], body, previousStrict, node = new Node(), - isGenerator, previousAllowYield; - - previousAllowYield = state.allowYield; - - expectKeyword('function'); - - isGenerator = match('*'); - if (isGenerator) { - lex(); - } - - state.allowYield = !isGenerator; - if (!match('(')) { - token = lookahead; - id = (!strict && !isGenerator && matchKeyword('yield')) ? parseNonComputedProperty() : parseVariableIdentifier(); - if (strict) { - if (isRestrictedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictFunctionName); - } - } else { - if (isRestrictedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictFunctionName; - } else if (isStrictModeReservedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictReservedWord; - } - } - } - - tmp = parseParams(firstRestricted); - params = tmp.params; - defaults = tmp.defaults; - stricted = tmp.stricted; - firstRestricted = tmp.firstRestricted; - if (tmp.message) { - message = tmp.message; - } - - previousStrict = strict; - body = parseFunctionSourceElements(); - if (strict && firstRestricted) { - throwUnexpectedToken(firstRestricted, message); - } - if (strict && stricted) { - tolerateUnexpectedToken(stricted, message); - } - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishFunctionExpression(id, params, defaults, body, isGenerator); - } - - // ECMA-262 14.5 Class Definitions - - function parseClassBody() { - var classBody, token, isStatic, hasConstructor = false, body, method, computed, key; - - classBody = new Node(); - - expect('{'); - body = []; - while (!match('}')) { - if (match(';')) { - lex(); - } else { - method = new Node(); - token = lookahead; - isStatic = false; - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - if (key.name === 'static' && (lookaheadPropertyName() || match('*'))) { - token = lookahead; - isStatic = true; - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - } - } - } - method = tryParseMethodDefinition(token, key, computed, method); - if (method) { - method['static'] = isStatic; // jscs:ignore requireDotNotation - if (method.kind === 'init') { - method.kind = 'method'; - } - if (!isStatic) { - if (!method.computed && (method.key.name || method.key.value.toString()) === 'constructor') { - if (method.kind !== 'method' || !method.method || method.value.generator) { - throwUnexpectedToken(token, Messages.ConstructorSpecialMethod); - } - if (hasConstructor) { - throwUnexpectedToken(token, Messages.DuplicateConstructor); - } else { - hasConstructor = true; - } - method.kind = 'constructor'; - } - } else { - if (!method.computed && (method.key.name || method.key.value.toString()) === 'prototype') { - throwUnexpectedToken(token, Messages.StaticPrototype); - } - } - method.type = Syntax.MethodDefinition; - delete method.method; - delete method.shorthand; - body.push(method); - } else { - throwUnexpectedToken(lookahead); - } - } - } - lex(); - return classBody.finishClassBody(body); - } - - function parseClassDeclaration(identifierIsOptional) { - var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict; - strict = true; - - expectKeyword('class'); - - if (!identifierIsOptional || lookahead.type === Token.Identifier) { - id = parseVariableIdentifier(); - } - - if (matchKeyword('extends')) { - lex(); - superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall); - } - classBody = parseClassBody(); - strict = previousStrict; - - return classNode.finishClassDeclaration(id, superClass, classBody); - } - - function parseClassExpression() { - var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict; - strict = true; - - expectKeyword('class'); - - if (lookahead.type === Token.Identifier) { - id = parseVariableIdentifier(); - } - - if (matchKeyword('extends')) { - lex(); - superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall); - } - classBody = parseClassBody(); - strict = previousStrict; - - return classNode.finishClassExpression(id, superClass, classBody); - } - - // ECMA-262 15.2 Modules - - function parseModuleSpecifier() { - var node = new Node(); - - if (lookahead.type !== Token.StringLiteral) { - throwError(Messages.InvalidModuleSpecifier); - } - return node.finishLiteral(lex()); - } - - // ECMA-262 15.2.3 Exports - - function parseExportSpecifier() { - var exported, local, node = new Node(), def; - if (matchKeyword('default')) { - // export {default} from 'something'; - def = new Node(); - lex(); - local = def.finishIdentifier('default'); - } else { - local = parseVariableIdentifier(); - } - if (matchContextualKeyword('as')) { - lex(); - exported = parseNonComputedProperty(); - } - return node.finishExportSpecifier(local, exported); - } - - function parseExportNamedDeclaration(node) { - var declaration = null, - isExportFromIdentifier, - src = null, specifiers = []; - - // non-default export - if (lookahead.type === Token.Keyword) { - // covers: - // export var f = 1; - switch (lookahead.value) { - case 'let': - case 'const': - declaration = parseLexicalDeclaration({inFor: false}); - return node.finishExportNamedDeclaration(declaration, specifiers, null); - case 'var': - case 'class': - case 'function': - declaration = parseStatementListItem(); - return node.finishExportNamedDeclaration(declaration, specifiers, null); - } - } - - expect('{'); - while (!match('}')) { - isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default'); - specifiers.push(parseExportSpecifier()); - if (!match('}')) { - expect(','); - if (match('}')) { - break; - } - } - } - expect('}'); - - if (matchContextualKeyword('from')) { - // covering: - // export {default} from 'foo'; - // export {foo} from 'foo'; - lex(); - src = parseModuleSpecifier(); - consumeSemicolon(); - } else if (isExportFromIdentifier) { - // covering: - // export {default}; // missing fromClause - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } else { - // cover - // export {foo}; - consumeSemicolon(); - } - return node.finishExportNamedDeclaration(declaration, specifiers, src); - } - - function parseExportDefaultDeclaration(node) { - var declaration = null, - expression = null; - - // covers: - // export default ... - expectKeyword('default'); - - if (matchKeyword('function')) { - // covers: - // export default function foo () {} - // export default function () {} - declaration = parseFunctionDeclaration(new Node(), true); - return node.finishExportDefaultDeclaration(declaration); - } - if (matchKeyword('class')) { - declaration = parseClassDeclaration(true); - return node.finishExportDefaultDeclaration(declaration); - } - - if (matchContextualKeyword('from')) { - throwError(Messages.UnexpectedToken, lookahead.value); - } - - // covers: - // export default {}; - // export default []; - // export default (1 + 2); - if (match('{')) { - expression = parseObjectInitializer(); - } else if (match('[')) { - expression = parseArrayInitializer(); - } else { - expression = parseAssignmentExpression(); - } - consumeSemicolon(); - return node.finishExportDefaultDeclaration(expression); - } - - function parseExportAllDeclaration(node) { - var src; - - // covers: - // export * from 'foo'; - expect('*'); - if (!matchContextualKeyword('from')) { - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } - lex(); - src = parseModuleSpecifier(); - consumeSemicolon(); - - return node.finishExportAllDeclaration(src); - } - - function parseExportDeclaration() { - var node = new Node(); - if (state.inFunctionBody) { - throwError(Messages.IllegalExportDeclaration); - } - - expectKeyword('export'); - - if (matchKeyword('default')) { - return parseExportDefaultDeclaration(node); - } - if (match('*')) { - return parseExportAllDeclaration(node); - } - return parseExportNamedDeclaration(node); - } - - // ECMA-262 15.2.2 Imports - - function parseImportSpecifier() { - // import {} ...; - var local, imported, node = new Node(); - - imported = parseNonComputedProperty(); - if (matchContextualKeyword('as')) { - lex(); - local = parseVariableIdentifier(); - } - - return node.finishImportSpecifier(local, imported); - } - - function parseNamedImports() { - var specifiers = []; - // {foo, bar as bas} - expect('{'); - while (!match('}')) { - specifiers.push(parseImportSpecifier()); - if (!match('}')) { - expect(','); - if (match('}')) { - break; - } - } - } - expect('}'); - return specifiers; - } - - function parseImportDefaultSpecifier() { - // import ...; - var local, node = new Node(); - - local = parseNonComputedProperty(); - - return node.finishImportDefaultSpecifier(local); - } - - function parseImportNamespaceSpecifier() { - // import <* as foo> ...; - var local, node = new Node(); - - expect('*'); - if (!matchContextualKeyword('as')) { - throwError(Messages.NoAsAfterImportNamespace); - } - lex(); - local = parseNonComputedProperty(); - - return node.finishImportNamespaceSpecifier(local); - } - - function parseImportDeclaration() { - var specifiers = [], src, node = new Node(); - - if (state.inFunctionBody) { - throwError(Messages.IllegalImportDeclaration); - } - - expectKeyword('import'); - - if (lookahead.type === Token.StringLiteral) { - // import 'foo'; - src = parseModuleSpecifier(); - } else { - - if (match('{')) { - // import {bar} - specifiers = specifiers.concat(parseNamedImports()); - } else if (match('*')) { - // import * as foo - specifiers.push(parseImportNamespaceSpecifier()); - } else if (isIdentifierName(lookahead) && !matchKeyword('default')) { - // import foo - specifiers.push(parseImportDefaultSpecifier()); - if (match(',')) { - lex(); - if (match('*')) { - // import foo, * as foo - specifiers.push(parseImportNamespaceSpecifier()); - } else if (match('{')) { - // import foo, {bar} - specifiers = specifiers.concat(parseNamedImports()); - } else { - throwUnexpectedToken(lookahead); - } - } - } else { - throwUnexpectedToken(lex()); - } - - if (!matchContextualKeyword('from')) { - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } - lex(); - src = parseModuleSpecifier(); - } - - consumeSemicolon(); - return node.finishImportDeclaration(specifiers, src); - } - - // ECMA-262 15.1 Scripts - - function parseScriptBody() { - var statement, body = [], token, directive, firstRestricted; - - while (startIndex < length) { - token = lookahead; - if (token.type !== Token.StringLiteral) { - break; - } - - statement = parseStatementListItem(); - body.push(statement); - if (statement.expression.type !== Syntax.Literal) { - // this is not directive - break; - } - directive = source.slice(token.start + 1, token.end - 1); - if (directive === 'use strict') { - strict = true; - if (firstRestricted) { - tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); - } - } else { - if (!firstRestricted && token.octal) { - firstRestricted = token; - } - } - } - - while (startIndex < length) { - statement = parseStatementListItem(); - /* istanbul ignore if */ - if (typeof statement === 'undefined') { - break; - } - body.push(statement); - } - return body; - } - - function parseProgram() { - var body, node; - - peek(); - node = new Node(); - - body = parseScriptBody(); - return node.finishProgram(body, state.sourceType); - } - - function filterTokenLocation() { - var i, entry, token, tokens = []; - - for (i = 0; i < extra.tokens.length; ++i) { - entry = extra.tokens[i]; - token = { - type: entry.type, - value: entry.value - }; - if (entry.regex) { - token.regex = { - pattern: entry.regex.pattern, - flags: entry.regex.flags - }; - } - if (extra.range) { - token.range = entry.range; - } - if (extra.loc) { - token.loc = entry.loc; - } - tokens.push(token); - } - - extra.tokens = tokens; - } - - function tokenize(code, options, delegate) { - var toString, - tokens; - - toString = String; - if (typeof code !== 'string' && !(code instanceof String)) { - code = toString(code); - } - - source = code; - index = 0; - lineNumber = (source.length > 0) ? 1 : 0; - lineStart = 0; - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - length = source.length; - lookahead = null; - state = { - allowIn: true, - allowYield: true, - labelSet: {}, - inFunctionBody: false, - inIteration: false, - inSwitch: false, - lastCommentStart: -1, - curlyStack: [] - }; - - extra = {}; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var assert_1 = __webpack_require__(9); + var error_handler_1 = __webpack_require__(10); + var messages_1 = __webpack_require__(11); + var Node = __webpack_require__(7); + var scanner_1 = __webpack_require__(12); + var syntax_1 = __webpack_require__(2); + var token_1 = __webpack_require__(13); + var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder'; + var Parser = (function () { + function Parser(code, options, delegate) { + if (options === void 0) { options = {}; } + this.config = { + range: (typeof options.range === 'boolean') && options.range, + loc: (typeof options.loc === 'boolean') && options.loc, + source: null, + tokens: (typeof options.tokens === 'boolean') && options.tokens, + comment: (typeof options.comment === 'boolean') && options.comment, + tolerant: (typeof options.tolerant === 'boolean') && options.tolerant + }; + if (this.config.loc && options.source && options.source !== null) { + this.config.source = String(options.source); + } + this.delegate = delegate; + this.errorHandler = new error_handler_1.ErrorHandler(); + this.errorHandler.tolerant = this.config.tolerant; + this.scanner = new scanner_1.Scanner(code, this.errorHandler); + this.scanner.trackComment = this.config.comment; + this.operatorPrecedence = { + ')': 0, + ';': 0, + ',': 0, + '=': 0, + ']': 0, + '||': 1, + '&&': 2, + '|': 3, + '^': 4, + '&': 5, + '==': 6, + '!=': 6, + '===': 6, + '!==': 6, + '<': 7, + '>': 7, + '<=': 7, + '>=': 7, + '<<': 8, + '>>': 8, + '>>>': 8, + '+': 9, + '-': 9, + '*': 11, + '/': 11, + '%': 11 + }; + this.lookahead = { + type: 2 /* EOF */, + value: '', + lineNumber: this.scanner.lineNumber, + lineStart: 0, + start: 0, + end: 0 + }; + this.hasLineTerminator = false; + this.context = { + isModule: false, + await: false, + allowIn: true, + allowStrictDirective: true, + allowYield: true, + firstCoverInitializedNameError: null, + isAssignmentTarget: false, + isBindingElement: false, + inFunctionBody: false, + inIteration: false, + inSwitch: false, + labelSet: {}, + strict: false + }; + this.tokens = []; + this.startMarker = { + index: 0, + line: this.scanner.lineNumber, + column: 0 + }; + this.lastMarker = { + index: 0, + line: this.scanner.lineNumber, + column: 0 + }; + this.nextToken(); + this.lastMarker = { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; + } + Parser.prototype.throwError = function (messageFormat) { + var values = []; + for (var _i = 1; _i < arguments.length; _i++) { + values[_i - 1] = arguments[_i]; + } + var args = Array.prototype.slice.call(arguments, 1); + var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { + assert_1.assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + }); + var index = this.lastMarker.index; + var line = this.lastMarker.line; + var column = this.lastMarker.column + 1; + throw this.errorHandler.createError(index, line, column, msg); + }; + Parser.prototype.tolerateError = function (messageFormat) { + var values = []; + for (var _i = 1; _i < arguments.length; _i++) { + values[_i - 1] = arguments[_i]; + } + var args = Array.prototype.slice.call(arguments, 1); + var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { + assert_1.assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + }); + var index = this.lastMarker.index; + var line = this.scanner.lineNumber; + var column = this.lastMarker.column + 1; + this.errorHandler.tolerateError(index, line, column, msg); + }; + // Throw an exception because of the token. + Parser.prototype.unexpectedTokenError = function (token, message) { + var msg = message || messages_1.Messages.UnexpectedToken; + var value; + if (token) { + if (!message) { + msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS : + (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier : + (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber : + (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString : + (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate : + messages_1.Messages.UnexpectedToken; + if (token.type === 4 /* Keyword */) { + if (this.scanner.isFutureReservedWord(token.value)) { + msg = messages_1.Messages.UnexpectedReserved; + } + else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) { + msg = messages_1.Messages.StrictReservedWord; + } + } + } + value = token.value; + } + else { + value = 'ILLEGAL'; + } + msg = msg.replace('%0', value); + if (token && typeof token.lineNumber === 'number') { + var index = token.start; + var line = token.lineNumber; + var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column; + var column = token.start - lastMarkerLineStart + 1; + return this.errorHandler.createError(index, line, column, msg); + } + else { + var index = this.lastMarker.index; + var line = this.lastMarker.line; + var column = this.lastMarker.column + 1; + return this.errorHandler.createError(index, line, column, msg); + } + }; + Parser.prototype.throwUnexpectedToken = function (token, message) { + throw this.unexpectedTokenError(token, message); + }; + Parser.prototype.tolerateUnexpectedToken = function (token, message) { + this.errorHandler.tolerate(this.unexpectedTokenError(token, message)); + }; + Parser.prototype.collectComments = function () { + if (!this.config.comment) { + this.scanner.scanComments(); + } + else { + var comments = this.scanner.scanComments(); + if (comments.length > 0 && this.delegate) { + for (var i = 0; i < comments.length; ++i) { + var e = comments[i]; + var node = void 0; + node = { + type: e.multiLine ? 'BlockComment' : 'LineComment', + value: this.scanner.source.slice(e.slice[0], e.slice[1]) + }; + if (this.config.range) { + node.range = e.range; + } + if (this.config.loc) { + node.loc = e.loc; + } + var metadata = { + start: { + line: e.loc.start.line, + column: e.loc.start.column, + offset: e.range[0] + }, + end: { + line: e.loc.end.line, + column: e.loc.end.column, + offset: e.range[1] + } + }; + this.delegate(node, metadata); + } + } + } + }; + // From internal representation to an external structure + Parser.prototype.getTokenRaw = function (token) { + return this.scanner.source.slice(token.start, token.end); + }; + Parser.prototype.convertToken = function (token) { + var t = { + type: token_1.TokenName[token.type], + value: this.getTokenRaw(token) + }; + if (this.config.range) { + t.range = [token.start, token.end]; + } + if (this.config.loc) { + t.loc = { + start: { + line: this.startMarker.line, + column: this.startMarker.column + }, + end: { + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + } + }; + } + if (token.type === 9 /* RegularExpression */) { + var pattern = token.pattern; + var flags = token.flags; + t.regex = { pattern: pattern, flags: flags }; + } + return t; + }; + Parser.prototype.nextToken = function () { + var token = this.lookahead; + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + this.collectComments(); + if (this.scanner.index !== this.startMarker.index) { + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + } + var next = this.scanner.lex(); + this.hasLineTerminator = (token.lineNumber !== next.lineNumber); + if (next && this.context.strict && next.type === 3 /* Identifier */) { + if (this.scanner.isStrictModeReservedWord(next.value)) { + next.type = 4 /* Keyword */; + } + } + this.lookahead = next; + if (this.config.tokens && next.type !== 2 /* EOF */) { + this.tokens.push(this.convertToken(next)); + } + return token; + }; + Parser.prototype.nextRegexToken = function () { + this.collectComments(); + var token = this.scanner.scanRegExp(); + if (this.config.tokens) { + // Pop the previous token, '/' or '/=' + // This is added from the lookahead token. + this.tokens.pop(); + this.tokens.push(this.convertToken(token)); + } + // Prime the next lookahead. + this.lookahead = token; + this.nextToken(); + return token; + }; + Parser.prototype.createNode = function () { + return { + index: this.startMarker.index, + line: this.startMarker.line, + column: this.startMarker.column + }; + }; + Parser.prototype.startNode = function (token, lastLineStart) { + if (lastLineStart === void 0) { lastLineStart = 0; } + var column = token.start - token.lineStart; + var line = token.lineNumber; + if (column < 0) { + column += lastLineStart; + line--; + } + return { + index: token.start, + line: line, + column: column + }; + }; + Parser.prototype.finalize = function (marker, node) { + if (this.config.range) { + node.range = [marker.index, this.lastMarker.index]; + } + if (this.config.loc) { + node.loc = { + start: { + line: marker.line, + column: marker.column, + }, + end: { + line: this.lastMarker.line, + column: this.lastMarker.column + } + }; + if (this.config.source) { + node.loc.source = this.config.source; + } + } + if (this.delegate) { + var metadata = { + start: { + line: marker.line, + column: marker.column, + offset: marker.index + }, + end: { + line: this.lastMarker.line, + column: this.lastMarker.column, + offset: this.lastMarker.index + } + }; + this.delegate(node, metadata); + } + return node; + }; + // Expect the next token to match the specified punctuator. + // If not, an exception will be thrown. + Parser.prototype.expect = function (value) { + var token = this.nextToken(); + if (token.type !== 7 /* Punctuator */ || token.value !== value) { + this.throwUnexpectedToken(token); + } + }; + // Quietly expect a comma when in tolerant mode, otherwise delegates to expect(). + Parser.prototype.expectCommaSeparator = function () { + if (this.config.tolerant) { + var token = this.lookahead; + if (token.type === 7 /* Punctuator */ && token.value === ',') { + this.nextToken(); + } + else if (token.type === 7 /* Punctuator */ && token.value === ';') { + this.nextToken(); + this.tolerateUnexpectedToken(token); + } + else { + this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken); + } + } + else { + this.expect(','); + } + }; + // Expect the next token to match the specified keyword. + // If not, an exception will be thrown. + Parser.prototype.expectKeyword = function (keyword) { + var token = this.nextToken(); + if (token.type !== 4 /* Keyword */ || token.value !== keyword) { + this.throwUnexpectedToken(token); + } + }; + // Return true if the next token matches the specified punctuator. + Parser.prototype.match = function (value) { + return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value; + }; + // Return true if the next token matches the specified keyword + Parser.prototype.matchKeyword = function (keyword) { + return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword; + }; + // Return true if the next token matches the specified contextual keyword + // (where an identifier is sometimes a keyword depending on the context) + Parser.prototype.matchContextualKeyword = function (keyword) { + return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword; + }; + // Return true if the next token is an assignment operator + Parser.prototype.matchAssign = function () { + if (this.lookahead.type !== 7 /* Punctuator */) { + return false; + } + var op = this.lookahead.value; + return op === '=' || + op === '*=' || + op === '**=' || + op === '/=' || + op === '%=' || + op === '+=' || + op === '-=' || + op === '<<=' || + op === '>>=' || + op === '>>>=' || + op === '&=' || + op === '^=' || + op === '|='; + }; + // Cover grammar support. + // + // When an assignment expression position starts with an left parenthesis, the determination of the type + // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead) + // or the first comma. This situation also defers the determination of all the expressions nested in the pair. + // + // There are three productions that can be parsed in a parentheses pair that needs to be determined + // after the outermost pair is closed. They are: + // + // 1. AssignmentExpression + // 2. BindingElements + // 3. AssignmentTargets + // + // In order to avoid exponential backtracking, we use two flags to denote if the production can be + // binding element or assignment target. + // + // The three productions have the relationship: + // + // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression + // + // with a single exception that CoverInitializedName when used directly in an Expression, generates + // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the + // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair. + // + // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not + // effect the current flags. This means the production the parser parses is only used as an expression. Therefore + // the CoverInitializedName check is conducted. + // + // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates + // the flags outside of the parser. This means the production the parser parses is used as a part of a potential + // pattern. The CoverInitializedName check is deferred. + Parser.prototype.isolateCoverGrammar = function (parseFunction) { + var previousIsBindingElement = this.context.isBindingElement; + var previousIsAssignmentTarget = this.context.isAssignmentTarget; + var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; + this.context.isBindingElement = true; + this.context.isAssignmentTarget = true; + this.context.firstCoverInitializedNameError = null; + var result = parseFunction.call(this); + if (this.context.firstCoverInitializedNameError !== null) { + this.throwUnexpectedToken(this.context.firstCoverInitializedNameError); + } + this.context.isBindingElement = previousIsBindingElement; + this.context.isAssignmentTarget = previousIsAssignmentTarget; + this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError; + return result; + }; + Parser.prototype.inheritCoverGrammar = function (parseFunction) { + var previousIsBindingElement = this.context.isBindingElement; + var previousIsAssignmentTarget = this.context.isAssignmentTarget; + var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; + this.context.isBindingElement = true; + this.context.isAssignmentTarget = true; + this.context.firstCoverInitializedNameError = null; + var result = parseFunction.call(this); + this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement; + this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget; + this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError; + return result; + }; + Parser.prototype.consumeSemicolon = function () { + if (this.match(';')) { + this.nextToken(); + } + else if (!this.hasLineTerminator) { + if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) { + this.throwUnexpectedToken(this.lookahead); + } + this.lastMarker.index = this.startMarker.index; + this.lastMarker.line = this.startMarker.line; + this.lastMarker.column = this.startMarker.column; + } + }; + // https://tc39.github.io/ecma262/#sec-primary-expression + Parser.prototype.parsePrimaryExpression = function () { + var node = this.createNode(); + var expr; + var token, raw; + switch (this.lookahead.type) { + case 3 /* Identifier */: + if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') { + this.tolerateUnexpectedToken(this.lookahead); + } + expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value)); + break; + case 6 /* NumericLiteral */: + case 8 /* StringLiteral */: + if (this.context.strict && this.lookahead.octal) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(token.value, raw)); + break; + case 1 /* BooleanLiteral */: + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(token.value === 'true', raw)); + break; + case 5 /* NullLiteral */: + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(null, raw)); + break; + case 10 /* Template */: + expr = this.parseTemplateLiteral(); + break; + case 7 /* Punctuator */: + switch (this.lookahead.value) { + case '(': + this.context.isBindingElement = false; + expr = this.inheritCoverGrammar(this.parseGroupExpression); + break; + case '[': + expr = this.inheritCoverGrammar(this.parseArrayInitializer); + break; + case '{': + expr = this.inheritCoverGrammar(this.parseObjectInitializer); + break; + case '/': + case '/=': + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + this.scanner.index = this.startMarker.index; + token = this.nextRegexToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags)); + break; + default: + expr = this.throwUnexpectedToken(this.nextToken()); + } + break; + case 4 /* Keyword */: + if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) { + expr = this.parseIdentifierName(); + } + else if (!this.context.strict && this.matchKeyword('let')) { + expr = this.finalize(node, new Node.Identifier(this.nextToken().value)); + } + else { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + if (this.matchKeyword('function')) { + expr = this.parseFunctionExpression(); + } + else if (this.matchKeyword('this')) { + this.nextToken(); + expr = this.finalize(node, new Node.ThisExpression()); + } + else if (this.matchKeyword('class')) { + expr = this.parseClassExpression(); + } + else { + expr = this.throwUnexpectedToken(this.nextToken()); + } + } + break; + default: + expr = this.throwUnexpectedToken(this.nextToken()); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-array-initializer + Parser.prototype.parseSpreadElement = function () { + var node = this.createNode(); + this.expect('...'); + var arg = this.inheritCoverGrammar(this.parseAssignmentExpression); + return this.finalize(node, new Node.SpreadElement(arg)); + }; + Parser.prototype.parseArrayInitializer = function () { + var node = this.createNode(); + var elements = []; + this.expect('['); + while (!this.match(']')) { + if (this.match(',')) { + this.nextToken(); + elements.push(null); + } + else if (this.match('...')) { + var element = this.parseSpreadElement(); + if (!this.match(']')) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + this.expect(','); + } + elements.push(element); + } + else { + elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); + if (!this.match(']')) { + this.expect(','); + } + } + } + this.expect(']'); + return this.finalize(node, new Node.ArrayExpression(elements)); + }; + // https://tc39.github.io/ecma262/#sec-object-initializer + Parser.prototype.parsePropertyMethod = function (params) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = params.simple; + var body = this.isolateCoverGrammar(this.parseFunctionSourceElements); + if (this.context.strict && params.firstRestricted) { + this.tolerateUnexpectedToken(params.firstRestricted, params.message); + } + if (this.context.strict && params.stricted) { + this.tolerateUnexpectedToken(params.stricted, params.message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + return body; + }; + Parser.prototype.parsePropertyMethodFunction = function () { + var isGenerator = false; + var node = this.createNode(); + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var params = this.parseFormalParameters(); + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); + }; + Parser.prototype.parsePropertyMethodAsyncFunction = function () { + var node = this.createNode(); + var previousAllowYield = this.context.allowYield; + var previousAwait = this.context.await; + this.context.allowYield = false; + this.context.await = true; + var params = this.parseFormalParameters(); + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + this.context.await = previousAwait; + return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method)); + }; + Parser.prototype.parseObjectPropertyKey = function () { + var node = this.createNode(); + var token = this.nextToken(); + var key; + switch (token.type) { + case 8 /* StringLiteral */: + case 6 /* NumericLiteral */: + if (this.context.strict && token.octal) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral); + } + var raw = this.getTokenRaw(token); + key = this.finalize(node, new Node.Literal(token.value, raw)); + break; + case 3 /* Identifier */: + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 4 /* Keyword */: + key = this.finalize(node, new Node.Identifier(token.value)); + break; + case 7 /* Punctuator */: + if (token.value === '[') { + key = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.expect(']'); + } + else { + key = this.throwUnexpectedToken(token); + } + break; + default: + key = this.throwUnexpectedToken(token); + } + return key; + }; + Parser.prototype.isPropertyKey = function (key, value) { + return (key.type === syntax_1.Syntax.Identifier && key.name === value) || + (key.type === syntax_1.Syntax.Literal && key.value === value); + }; + Parser.prototype.parseObjectProperty = function (hasProto) { + var node = this.createNode(); + var token = this.lookahead; + var kind; + var key = null; + var value = null; + var computed = false; + var method = false; + var shorthand = false; + var isAsync = false; + if (token.type === 3 /* Identifier */) { + var id = token.value; + this.nextToken(); + computed = this.match('['); + isAsync = !this.hasLineTerminator && (id === 'async') && + !this.match(':') && !this.match('(') && !this.match('*') && !this.match(','); + key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id)); + } + else if (this.match('*')) { + this.nextToken(); + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + } + var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); + if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) { + kind = 'get'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.context.allowYield = false; + value = this.parseGetterMethod(); + } + else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) { + kind = 'set'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseSetterMethod(); + } + else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { + kind = 'init'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseGeneratorMethod(); + method = true; + } + else { + if (!key) { + this.throwUnexpectedToken(this.lookahead); + } + kind = 'init'; + if (this.match(':') && !isAsync) { + if (!computed && this.isPropertyKey(key, '__proto__')) { + if (hasProto.value) { + this.tolerateError(messages_1.Messages.DuplicateProtoProperty); + } + hasProto.value = true; + } + this.nextToken(); + value = this.inheritCoverGrammar(this.parseAssignmentExpression); + } + else if (this.match('(')) { + value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); + method = true; + } + else if (token.type === 3 /* Identifier */) { + var id = this.finalize(node, new Node.Identifier(token.value)); + if (this.match('=')) { + this.context.firstCoverInitializedNameError = this.lookahead; + this.nextToken(); + shorthand = true; + var init = this.isolateCoverGrammar(this.parseAssignmentExpression); + value = this.finalize(node, new Node.AssignmentPattern(id, init)); + } + else { + shorthand = true; + value = id; + } + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + } + return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand)); + }; + Parser.prototype.parseObjectInitializer = function () { + var node = this.createNode(); + this.expect('{'); + var properties = []; + var hasProto = { value: false }; + while (!this.match('}')) { + properties.push(this.parseObjectProperty(hasProto)); + if (!this.match('}')) { + this.expectCommaSeparator(); + } + } + this.expect('}'); + return this.finalize(node, new Node.ObjectExpression(properties)); + }; + // https://tc39.github.io/ecma262/#sec-template-literals + Parser.prototype.parseTemplateHead = function () { + assert_1.assert(this.lookahead.head, 'Template literal must start with a template head'); + var node = this.createNode(); + var token = this.nextToken(); + var raw = token.value; + var cooked = token.cooked; + return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); + }; + Parser.prototype.parseTemplateElement = function () { + if (this.lookahead.type !== 10 /* Template */) { + this.throwUnexpectedToken(); + } + var node = this.createNode(); + var token = this.nextToken(); + var raw = token.value; + var cooked = token.cooked; + return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); + }; + Parser.prototype.parseTemplateLiteral = function () { + var node = this.createNode(); + var expressions = []; + var quasis = []; + var quasi = this.parseTemplateHead(); + quasis.push(quasi); + while (!quasi.tail) { + expressions.push(this.parseExpression()); + quasi = this.parseTemplateElement(); + quasis.push(quasi); + } + return this.finalize(node, new Node.TemplateLiteral(quasis, expressions)); + }; + // https://tc39.github.io/ecma262/#sec-grouping-operator + Parser.prototype.reinterpretExpressionAsPattern = function (expr) { + switch (expr.type) { + case syntax_1.Syntax.Identifier: + case syntax_1.Syntax.MemberExpression: + case syntax_1.Syntax.RestElement: + case syntax_1.Syntax.AssignmentPattern: + break; + case syntax_1.Syntax.SpreadElement: + expr.type = syntax_1.Syntax.RestElement; + this.reinterpretExpressionAsPattern(expr.argument); + break; + case syntax_1.Syntax.ArrayExpression: + expr.type = syntax_1.Syntax.ArrayPattern; + for (var i = 0; i < expr.elements.length; i++) { + if (expr.elements[i] !== null) { + this.reinterpretExpressionAsPattern(expr.elements[i]); + } + } + break; + case syntax_1.Syntax.ObjectExpression: + expr.type = syntax_1.Syntax.ObjectPattern; + for (var i = 0; i < expr.properties.length; i++) { + this.reinterpretExpressionAsPattern(expr.properties[i].value); + } + break; + case syntax_1.Syntax.AssignmentExpression: + expr.type = syntax_1.Syntax.AssignmentPattern; + delete expr.operator; + this.reinterpretExpressionAsPattern(expr.left); + break; + default: + // Allow other node type for tolerant parsing. + break; + } + }; + Parser.prototype.parseGroupExpression = function () { + var expr; + this.expect('('); + if (this.match(')')) { + this.nextToken(); + if (!this.match('=>')) { + this.expect('=>'); + } + expr = { + type: ArrowParameterPlaceHolder, + params: [], + async: false + }; + } + else { + var startToken = this.lookahead; + var params = []; + if (this.match('...')) { + expr = this.parseRestElement(params); + this.expect(')'); + if (!this.match('=>')) { + this.expect('=>'); + } + expr = { + type: ArrowParameterPlaceHolder, + params: [expr], + async: false + }; + } + else { + var arrow = false; + this.context.isBindingElement = true; + expr = this.inheritCoverGrammar(this.parseAssignmentExpression); + if (this.match(',')) { + var expressions = []; + this.context.isAssignmentTarget = false; + expressions.push(expr); + while (this.lookahead.type !== 2 /* EOF */) { + if (!this.match(',')) { + break; + } + this.nextToken(); + if (this.match(')')) { + this.nextToken(); + for (var i = 0; i < expressions.length; i++) { + this.reinterpretExpressionAsPattern(expressions[i]); + } + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: expressions, + async: false + }; + } + else if (this.match('...')) { + if (!this.context.isBindingElement) { + this.throwUnexpectedToken(this.lookahead); + } + expressions.push(this.parseRestElement(params)); + this.expect(')'); + if (!this.match('=>')) { + this.expect('=>'); + } + this.context.isBindingElement = false; + for (var i = 0; i < expressions.length; i++) { + this.reinterpretExpressionAsPattern(expressions[i]); + } + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: expressions, + async: false + }; + } + else { + expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); + } + if (arrow) { + break; + } + } + if (!arrow) { + expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); + } + } + if (!arrow) { + this.expect(')'); + if (this.match('=>')) { + if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') { + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: [expr], + async: false + }; + } + if (!arrow) { + if (!this.context.isBindingElement) { + this.throwUnexpectedToken(this.lookahead); + } + if (expr.type === syntax_1.Syntax.SequenceExpression) { + for (var i = 0; i < expr.expressions.length; i++) { + this.reinterpretExpressionAsPattern(expr.expressions[i]); + } + } + else { + this.reinterpretExpressionAsPattern(expr); + } + var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]); + expr = { + type: ArrowParameterPlaceHolder, + params: parameters, + async: false + }; + } + } + this.context.isBindingElement = false; + } + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions + Parser.prototype.parseArguments = function () { + this.expect('('); + var args = []; + if (!this.match(')')) { + while (true) { + var expr = this.match('...') ? this.parseSpreadElement() : + this.isolateCoverGrammar(this.parseAssignmentExpression); + args.push(expr); + if (this.match(')')) { + break; + } + this.expectCommaSeparator(); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return args; + }; + Parser.prototype.isIdentifierName = function (token) { + return token.type === 3 /* Identifier */ || + token.type === 4 /* Keyword */ || + token.type === 1 /* BooleanLiteral */ || + token.type === 5 /* NullLiteral */; + }; + Parser.prototype.parseIdentifierName = function () { + var node = this.createNode(); + var token = this.nextToken(); + if (!this.isIdentifierName(token)) { + this.throwUnexpectedToken(token); + } + return this.finalize(node, new Node.Identifier(token.value)); + }; + Parser.prototype.parseNewExpression = function () { + var node = this.createNode(); + var id = this.parseIdentifierName(); + assert_1.assert(id.name === 'new', 'New expression must start with `new`'); + var expr; + if (this.match('.')) { + this.nextToken(); + if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') { + var property = this.parseIdentifierName(); + expr = new Node.MetaProperty(id, property); + } + else { + this.throwUnexpectedToken(this.lookahead); + } + } + else { + var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression); + var args = this.match('(') ? this.parseArguments() : []; + expr = new Node.NewExpression(callee, args); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + return this.finalize(node, expr); + }; + Parser.prototype.parseAsyncArgument = function () { + var arg = this.parseAssignmentExpression(); + this.context.firstCoverInitializedNameError = null; + return arg; + }; + Parser.prototype.parseAsyncArguments = function () { + this.expect('('); + var args = []; + if (!this.match(')')) { + while (true) { + var expr = this.match('...') ? this.parseSpreadElement() : + this.isolateCoverGrammar(this.parseAsyncArgument); + args.push(expr); + if (this.match(')')) { + break; + } + this.expectCommaSeparator(); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return args; + }; + Parser.prototype.parseLeftHandSideExpressionAllowCall = function () { + var startToken = this.lookahead; + var maybeAsync = this.matchContextualKeyword('async'); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + var expr; + if (this.matchKeyword('super') && this.context.inFunctionBody) { + expr = this.createNode(); + this.nextToken(); + expr = this.finalize(expr, new Node.Super()); + if (!this.match('(') && !this.match('.') && !this.match('[')) { + this.throwUnexpectedToken(this.lookahead); + } + } + else { + expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); + } + while (true) { + if (this.match('.')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('.'); + var property = this.parseIdentifierName(); + expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property)); + } + else if (this.match('(')) { + var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber); + this.context.isBindingElement = false; + this.context.isAssignmentTarget = false; + var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments(); + expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args)); + if (asyncArrow && this.match('=>')) { + for (var i = 0; i < args.length; ++i) { + this.reinterpretExpressionAsPattern(args[i]); + } + expr = { + type: ArrowParameterPlaceHolder, + params: args, + async: true + }; + } + } + else if (this.match('[')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('['); + var property = this.isolateCoverGrammar(this.parseExpression); + this.expect(']'); + expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property)); + } + else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { + var quasi = this.parseTemplateLiteral(); + expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi)); + } + else { + break; + } + } + this.context.allowIn = previousAllowIn; + return expr; + }; + Parser.prototype.parseSuper = function () { + var node = this.createNode(); + this.expectKeyword('super'); + if (!this.match('[') && !this.match('.')) { + this.throwUnexpectedToken(this.lookahead); + } + return this.finalize(node, new Node.Super()); + }; + Parser.prototype.parseLeftHandSideExpression = function () { + assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.'); + var node = this.startNode(this.lookahead); + var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() : + this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); + while (true) { + if (this.match('[')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('['); + var property = this.isolateCoverGrammar(this.parseExpression); + this.expect(']'); + expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property)); + } + else if (this.match('.')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('.'); + var property = this.parseIdentifierName(); + expr = this.finalize(node, new Node.StaticMemberExpression(expr, property)); + } + else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { + var quasi = this.parseTemplateLiteral(); + expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi)); + } + else { + break; + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-update-expressions + Parser.prototype.parseUpdateExpression = function () { + var expr; + var startToken = this.lookahead; + if (this.match('++') || this.match('--')) { + var node = this.startNode(startToken); + var token = this.nextToken(); + expr = this.inheritCoverGrammar(this.parseUnaryExpression); + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { + this.tolerateError(messages_1.Messages.StrictLHSPrefix); + } + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + var prefix = true; + expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix)); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else { + expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall); + if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) { + if (this.match('++') || this.match('--')) { + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { + this.tolerateError(messages_1.Messages.StrictLHSPostfix); + } + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var operator = this.nextToken().value; + var prefix = false; + expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix)); + } + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-unary-operators + Parser.prototype.parseAwaitExpression = function () { + var node = this.createNode(); + this.nextToken(); + var argument = this.parseUnaryExpression(); + return this.finalize(node, new Node.AwaitExpression(argument)); + }; + Parser.prototype.parseUnaryExpression = function () { + var expr; + if (this.match('+') || this.match('-') || this.match('~') || this.match('!') || + this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) { + var node = this.startNode(this.lookahead); + var token = this.nextToken(); + expr = this.inheritCoverGrammar(this.parseUnaryExpression); + expr = this.finalize(node, new Node.UnaryExpression(token.value, expr)); + if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) { + this.tolerateError(messages_1.Messages.StrictDelete); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else if (this.context.await && this.matchContextualKeyword('await')) { + expr = this.parseAwaitExpression(); + } + else { + expr = this.parseUpdateExpression(); + } + return expr; + }; + Parser.prototype.parseExponentiationExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseUnaryExpression); + if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) { + this.nextToken(); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var left = expr; + var right = this.isolateCoverGrammar(this.parseExponentiationExpression); + expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right)); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-exp-operator + // https://tc39.github.io/ecma262/#sec-multiplicative-operators + // https://tc39.github.io/ecma262/#sec-additive-operators + // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators + // https://tc39.github.io/ecma262/#sec-relational-operators + // https://tc39.github.io/ecma262/#sec-equality-operators + // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators + // https://tc39.github.io/ecma262/#sec-binary-logical-operators + Parser.prototype.binaryPrecedence = function (token) { + var op = token.value; + var precedence; + if (token.type === 7 /* Punctuator */) { + precedence = this.operatorPrecedence[op] || 0; + } + else if (token.type === 4 /* Keyword */) { + precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0; + } + else { + precedence = 0; + } + return precedence; + }; + Parser.prototype.parseBinaryExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseExponentiationExpression); + var token = this.lookahead; + var prec = this.binaryPrecedence(token); + if (prec > 0) { + this.nextToken(); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var markers = [startToken, this.lookahead]; + var left = expr; + var right = this.isolateCoverGrammar(this.parseExponentiationExpression); + var stack = [left, token.value, right]; + var precedences = [prec]; + while (true) { + prec = this.binaryPrecedence(this.lookahead); + if (prec <= 0) { + break; + } + // Reduce: make a binary expression from the three topmost entries. + while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) { + right = stack.pop(); + var operator = stack.pop(); + precedences.pop(); + left = stack.pop(); + markers.pop(); + var node = this.startNode(markers[markers.length - 1]); + stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right))); + } + // Shift. + stack.push(this.nextToken().value); + precedences.push(prec); + markers.push(this.lookahead); + stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression)); + } + // Final reduce to clean-up the stack. + var i = stack.length - 1; + expr = stack[i]; + var lastMarker = markers.pop(); + while (i > 1) { + var marker = markers.pop(); + var lastLineStart = lastMarker && lastMarker.lineStart; + var node = this.startNode(marker, lastLineStart); + var operator = stack[i - 1]; + expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr)); + i -= 2; + lastMarker = marker; + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-conditional-operator + Parser.prototype.parseConditionalExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseBinaryExpression); + if (this.match('?')) { + this.nextToken(); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.context.allowIn = previousAllowIn; + this.expect(':'); + var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression); + expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate)); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-assignment-operators + Parser.prototype.checkPatternParam = function (options, param) { + switch (param.type) { + case syntax_1.Syntax.Identifier: + this.validateParam(options, param, param.name); + break; + case syntax_1.Syntax.RestElement: + this.checkPatternParam(options, param.argument); + break; + case syntax_1.Syntax.AssignmentPattern: + this.checkPatternParam(options, param.left); + break; + case syntax_1.Syntax.ArrayPattern: + for (var i = 0; i < param.elements.length; i++) { + if (param.elements[i] !== null) { + this.checkPatternParam(options, param.elements[i]); + } + } + break; + case syntax_1.Syntax.ObjectPattern: + for (var i = 0; i < param.properties.length; i++) { + this.checkPatternParam(options, param.properties[i].value); + } + break; + default: + break; + } + options.simple = options.simple && (param instanceof Node.Identifier); + }; + Parser.prototype.reinterpretAsCoverFormalsList = function (expr) { + var params = [expr]; + var options; + var asyncArrow = false; + switch (expr.type) { + case syntax_1.Syntax.Identifier: + break; + case ArrowParameterPlaceHolder: + params = expr.params; + asyncArrow = expr.async; + break; + default: + return null; + } + options = { + simple: true, + paramSet: {} + }; + for (var i = 0; i < params.length; ++i) { + var param = params[i]; + if (param.type === syntax_1.Syntax.AssignmentPattern) { + if (param.right.type === syntax_1.Syntax.YieldExpression) { + if (param.right.argument) { + this.throwUnexpectedToken(this.lookahead); + } + param.right.type = syntax_1.Syntax.Identifier; + param.right.name = 'yield'; + delete param.right.argument; + delete param.right.delegate; + } + } + else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') { + this.throwUnexpectedToken(this.lookahead); + } + this.checkPatternParam(options, param); + params[i] = param; + } + if (this.context.strict || !this.context.allowYield) { + for (var i = 0; i < params.length; ++i) { + var param = params[i]; + if (param.type === syntax_1.Syntax.YieldExpression) { + this.throwUnexpectedToken(this.lookahead); + } + } + } + if (options.message === messages_1.Messages.StrictParamDupe) { + var token = this.context.strict ? options.stricted : options.firstRestricted; + this.throwUnexpectedToken(token, options.message); + } + return { + simple: options.simple, + params: params, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; + }; + Parser.prototype.parseAssignmentExpression = function () { + var expr; + if (!this.context.allowYield && this.matchKeyword('yield')) { + expr = this.parseYieldExpression(); + } + else { + var startToken = this.lookahead; + var token = startToken; + expr = this.parseConditionalExpression(); + if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') { + if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) { + var arg = this.parsePrimaryExpression(); + this.reinterpretExpressionAsPattern(arg); + expr = { + type: ArrowParameterPlaceHolder, + params: [arg], + async: true + }; + } + } + if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) { + // https://tc39.github.io/ecma262/#sec-arrow-function-definitions + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var isAsync = expr.async; + var list = this.reinterpretAsCoverFormalsList(expr); + if (list) { + if (this.hasLineTerminator) { + this.tolerateUnexpectedToken(this.lookahead); + } + this.context.firstCoverInitializedNameError = null; + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = list.simple; + var previousAllowYield = this.context.allowYield; + var previousAwait = this.context.await; + this.context.allowYield = true; + this.context.await = isAsync; + var node = this.startNode(startToken); + this.expect('=>'); + var body = void 0; + if (this.match('{')) { + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + body = this.parseFunctionSourceElements(); + this.context.allowIn = previousAllowIn; + } + else { + body = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + var expression = body.type !== syntax_1.Syntax.BlockStatement; + if (this.context.strict && list.firstRestricted) { + this.throwUnexpectedToken(list.firstRestricted, list.message); + } + if (this.context.strict && list.stricted) { + this.tolerateUnexpectedToken(list.stricted, list.message); + } + expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) : + this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression)); + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.allowYield = previousAllowYield; + this.context.await = previousAwait; + } + } + else { + if (this.matchAssign()) { + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) { + var id = expr; + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment); + } + if (this.scanner.isStrictModeReservedWord(id.name)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + } + if (!this.match('=')) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else { + this.reinterpretExpressionAsPattern(expr); + } + token = this.nextToken(); + var operator = token.value; + var right = this.isolateCoverGrammar(this.parseAssignmentExpression); + expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right)); + this.context.firstCoverInitializedNameError = null; + } + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-comma-operator + Parser.prototype.parseExpression = function () { + var startToken = this.lookahead; + var expr = this.isolateCoverGrammar(this.parseAssignmentExpression); + if (this.match(',')) { + var expressions = []; + expressions.push(expr); + while (this.lookahead.type !== 2 /* EOF */) { + if (!this.match(',')) { + break; + } + this.nextToken(); + expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); + } + expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-block + Parser.prototype.parseStatementListItem = function () { + var statement; + this.context.isAssignmentTarget = true; + this.context.isBindingElement = true; + if (this.lookahead.type === 4 /* Keyword */) { + switch (this.lookahead.value) { + case 'export': + if (!this.context.isModule) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration); + } + statement = this.parseExportDeclaration(); + break; + case 'import': + if (!this.context.isModule) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration); + } + statement = this.parseImportDeclaration(); + break; + case 'const': + statement = this.parseLexicalDeclaration({ inFor: false }); + break; + case 'function': + statement = this.parseFunctionDeclaration(); + break; + case 'class': + statement = this.parseClassDeclaration(); + break; + case 'let': + statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement(); + break; + default: + statement = this.parseStatement(); + break; + } + } + else { + statement = this.parseStatement(); + } + return statement; + }; + Parser.prototype.parseBlock = function () { + var node = this.createNode(); + this.expect('{'); + var block = []; + while (true) { + if (this.match('}')) { + break; + } + block.push(this.parseStatementListItem()); + } + this.expect('}'); + return this.finalize(node, new Node.BlockStatement(block)); + }; + // https://tc39.github.io/ecma262/#sec-let-and-const-declarations + Parser.prototype.parseLexicalBinding = function (kind, options) { + var node = this.createNode(); + var params = []; + var id = this.parsePattern(params, kind); + if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateError(messages_1.Messages.StrictVarName); + } + } + var init = null; + if (kind === 'const') { + if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) { + if (this.match('=')) { + this.nextToken(); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + else { + this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const'); + } + } + } + else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) { + this.expect('='); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + return this.finalize(node, new Node.VariableDeclarator(id, init)); + }; + Parser.prototype.parseBindingList = function (kind, options) { + var list = [this.parseLexicalBinding(kind, options)]; + while (this.match(',')) { + this.nextToken(); + list.push(this.parseLexicalBinding(kind, options)); + } + return list; + }; + Parser.prototype.isLexicalDeclaration = function () { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.scanner.lex(); + this.scanner.restoreState(state); + return (next.type === 3 /* Identifier */) || + (next.type === 7 /* Punctuator */ && next.value === '[') || + (next.type === 7 /* Punctuator */ && next.value === '{') || + (next.type === 4 /* Keyword */ && next.value === 'let') || + (next.type === 4 /* Keyword */ && next.value === 'yield'); + }; + Parser.prototype.parseLexicalDeclaration = function (options) { + var node = this.createNode(); + var kind = this.nextToken().value; + assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const'); + var declarations = this.parseBindingList(kind, options); + this.consumeSemicolon(); + return this.finalize(node, new Node.VariableDeclaration(declarations, kind)); + }; + // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns + Parser.prototype.parseBindingRestElement = function (params, kind) { + var node = this.createNode(); + this.expect('...'); + var arg = this.parsePattern(params, kind); + return this.finalize(node, new Node.RestElement(arg)); + }; + Parser.prototype.parseArrayPattern = function (params, kind) { + var node = this.createNode(); + this.expect('['); + var elements = []; + while (!this.match(']')) { + if (this.match(',')) { + this.nextToken(); + elements.push(null); + } + else { + if (this.match('...')) { + elements.push(this.parseBindingRestElement(params, kind)); + break; + } + else { + elements.push(this.parsePatternWithDefault(params, kind)); + } + if (!this.match(']')) { + this.expect(','); + } + } + } + this.expect(']'); + return this.finalize(node, new Node.ArrayPattern(elements)); + }; + Parser.prototype.parsePropertyPattern = function (params, kind) { + var node = this.createNode(); + var computed = false; + var shorthand = false; + var method = false; + var key; + var value; + if (this.lookahead.type === 3 /* Identifier */) { + var keyToken = this.lookahead; + key = this.parseVariableIdentifier(); + var init = this.finalize(node, new Node.Identifier(keyToken.value)); + if (this.match('=')) { + params.push(keyToken); + shorthand = true; + this.nextToken(); + var expr = this.parseAssignmentExpression(); + value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr)); + } + else if (!this.match(':')) { + params.push(keyToken); + shorthand = true; + value = init; + } + else { + this.expect(':'); + value = this.parsePatternWithDefault(params, kind); + } + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.expect(':'); + value = this.parsePatternWithDefault(params, kind); + } + return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand)); + }; + Parser.prototype.parseObjectPattern = function (params, kind) { + var node = this.createNode(); + var properties = []; + this.expect('{'); + while (!this.match('}')) { + properties.push(this.parsePropertyPattern(params, kind)); + if (!this.match('}')) { + this.expect(','); + } + } + this.expect('}'); + return this.finalize(node, new Node.ObjectPattern(properties)); + }; + Parser.prototype.parsePattern = function (params, kind) { + var pattern; + if (this.match('[')) { + pattern = this.parseArrayPattern(params, kind); + } + else if (this.match('{')) { + pattern = this.parseObjectPattern(params, kind); + } + else { + if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding); + } + params.push(this.lookahead); + pattern = this.parseVariableIdentifier(kind); + } + return pattern; + }; + Parser.prototype.parsePatternWithDefault = function (params, kind) { + var startToken = this.lookahead; + var pattern = this.parsePattern(params, kind); + if (this.match('=')) { + this.nextToken(); + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var right = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.context.allowYield = previousAllowYield; + pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right)); + } + return pattern; + }; + // https://tc39.github.io/ecma262/#sec-variable-statement + Parser.prototype.parseVariableIdentifier = function (kind) { + var node = this.createNode(); + var token = this.nextToken(); + if (token.type === 4 /* Keyword */ && token.value === 'yield') { + if (this.context.strict) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + else if (!this.context.allowYield) { + this.throwUnexpectedToken(token); + } + } + else if (token.type !== 3 /* Identifier */) { + if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + else { + if (this.context.strict || token.value !== 'let' || kind !== 'var') { + this.throwUnexpectedToken(token); + } + } + } + else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') { + this.tolerateUnexpectedToken(token); + } + return this.finalize(node, new Node.Identifier(token.value)); + }; + Parser.prototype.parseVariableDeclaration = function (options) { + var node = this.createNode(); + var params = []; + var id = this.parsePattern(params, 'var'); + if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateError(messages_1.Messages.StrictVarName); + } + } + var init = null; + if (this.match('=')) { + this.nextToken(); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) { + this.expect('='); + } + return this.finalize(node, new Node.VariableDeclarator(id, init)); + }; + Parser.prototype.parseVariableDeclarationList = function (options) { + var opt = { inFor: options.inFor }; + var list = []; + list.push(this.parseVariableDeclaration(opt)); + while (this.match(',')) { + this.nextToken(); + list.push(this.parseVariableDeclaration(opt)); + } + return list; + }; + Parser.prototype.parseVariableStatement = function () { + var node = this.createNode(); + this.expectKeyword('var'); + var declarations = this.parseVariableDeclarationList({ inFor: false }); + this.consumeSemicolon(); + return this.finalize(node, new Node.VariableDeclaration(declarations, 'var')); + }; + // https://tc39.github.io/ecma262/#sec-empty-statement + Parser.prototype.parseEmptyStatement = function () { + var node = this.createNode(); + this.expect(';'); + return this.finalize(node, new Node.EmptyStatement()); + }; + // https://tc39.github.io/ecma262/#sec-expression-statement + Parser.prototype.parseExpressionStatement = function () { + var node = this.createNode(); + var expr = this.parseExpression(); + this.consumeSemicolon(); + return this.finalize(node, new Node.ExpressionStatement(expr)); + }; + // https://tc39.github.io/ecma262/#sec-if-statement + Parser.prototype.parseIfClause = function () { + if (this.context.strict && this.matchKeyword('function')) { + this.tolerateError(messages_1.Messages.StrictFunction); + } + return this.parseStatement(); + }; + Parser.prototype.parseIfStatement = function () { + var node = this.createNode(); + var consequent; + var alternate = null; + this.expectKeyword('if'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + consequent = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + consequent = this.parseIfClause(); + if (this.matchKeyword('else')) { + this.nextToken(); + alternate = this.parseIfClause(); + } + } + return this.finalize(node, new Node.IfStatement(test, consequent, alternate)); + }; + // https://tc39.github.io/ecma262/#sec-do-while-statement + Parser.prototype.parseDoWhileStatement = function () { + var node = this.createNode(); + this.expectKeyword('do'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + var body = this.parseStatement(); + this.context.inIteration = previousInIteration; + this.expectKeyword('while'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + } + else { + this.expect(')'); + if (this.match(';')) { + this.nextToken(); + } + } + return this.finalize(node, new Node.DoWhileStatement(body, test)); + }; + // https://tc39.github.io/ecma262/#sec-while-statement + Parser.prototype.parseWhileStatement = function () { + var node = this.createNode(); + var body; + this.expectKeyword('while'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + body = this.parseStatement(); + this.context.inIteration = previousInIteration; + } + return this.finalize(node, new Node.WhileStatement(test, body)); + }; + // https://tc39.github.io/ecma262/#sec-for-statement + // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements + Parser.prototype.parseForStatement = function () { + var init = null; + var test = null; + var update = null; + var forIn = true; + var left, right; + var node = this.createNode(); + this.expectKeyword('for'); + this.expect('('); + if (this.match(';')) { + this.nextToken(); + } + else { + if (this.matchKeyword('var')) { + init = this.createNode(); + this.nextToken(); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + var declarations = this.parseVariableDeclarationList({ inFor: true }); + this.context.allowIn = previousAllowIn; + if (declarations.length === 1 && this.matchKeyword('in')) { + var decl = declarations[0]; + if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) { + this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in'); + } + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.nextToken(); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.expect(';'); + } + } + else if (this.matchKeyword('const') || this.matchKeyword('let')) { + init = this.createNode(); + var kind = this.nextToken().value; + if (!this.context.strict && this.lookahead.value === 'in') { + init = this.finalize(init, new Node.Identifier(kind)); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else { + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + var declarations = this.parseBindingList(kind, { inFor: true }); + this.context.allowIn = previousAllowIn; + if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + this.nextToken(); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + this.consumeSemicolon(); + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + } + } + } + else { + var initStartToken = this.lookahead; + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + init = this.inheritCoverGrammar(this.parseAssignmentExpression); + this.context.allowIn = previousAllowIn; + if (this.matchKeyword('in')) { + if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { + this.tolerateError(messages_1.Messages.InvalidLHSInForIn); + } + this.nextToken(); + this.reinterpretExpressionAsPattern(init); + left = init; + right = this.parseExpression(); + init = null; + } + else if (this.matchContextualKeyword('of')) { + if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { + this.tolerateError(messages_1.Messages.InvalidLHSInForLoop); + } + this.nextToken(); + this.reinterpretExpressionAsPattern(init); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + if (this.match(',')) { + var initSeq = [init]; + while (this.match(',')) { + this.nextToken(); + initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); + } + init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq)); + } + this.expect(';'); + } + } + } + if (typeof left === 'undefined') { + if (!this.match(';')) { + test = this.parseExpression(); + } + this.expect(';'); + if (!this.match(')')) { + update = this.parseExpression(); + } + } + var body; + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + body = this.isolateCoverGrammar(this.parseStatement); + this.context.inIteration = previousInIteration; + } + return (typeof left === 'undefined') ? + this.finalize(node, new Node.ForStatement(init, test, update, body)) : + forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) : + this.finalize(node, new Node.ForOfStatement(left, right, body)); + }; + // https://tc39.github.io/ecma262/#sec-continue-statement + Parser.prototype.parseContinueStatement = function () { + var node = this.createNode(); + this.expectKeyword('continue'); + var label = null; + if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { + var id = this.parseVariableIdentifier(); + label = id; + var key = '$' + id.name; + if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.UnknownLabel, id.name); + } + } + this.consumeSemicolon(); + if (label === null && !this.context.inIteration) { + this.throwError(messages_1.Messages.IllegalContinue); + } + return this.finalize(node, new Node.ContinueStatement(label)); + }; + // https://tc39.github.io/ecma262/#sec-break-statement + Parser.prototype.parseBreakStatement = function () { + var node = this.createNode(); + this.expectKeyword('break'); + var label = null; + if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { + var id = this.parseVariableIdentifier(); + var key = '$' + id.name; + if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.UnknownLabel, id.name); + } + label = id; + } + this.consumeSemicolon(); + if (label === null && !this.context.inIteration && !this.context.inSwitch) { + this.throwError(messages_1.Messages.IllegalBreak); + } + return this.finalize(node, new Node.BreakStatement(label)); + }; + // https://tc39.github.io/ecma262/#sec-return-statement + Parser.prototype.parseReturnStatement = function () { + if (!this.context.inFunctionBody) { + this.tolerateError(messages_1.Messages.IllegalReturn); + } + var node = this.createNode(); + this.expectKeyword('return'); + var hasArgument = (!this.match(';') && !this.match('}') && + !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) || + this.lookahead.type === 8 /* StringLiteral */ || + this.lookahead.type === 10 /* Template */; + var argument = hasArgument ? this.parseExpression() : null; + this.consumeSemicolon(); + return this.finalize(node, new Node.ReturnStatement(argument)); + }; + // https://tc39.github.io/ecma262/#sec-with-statement + Parser.prototype.parseWithStatement = function () { + if (this.context.strict) { + this.tolerateError(messages_1.Messages.StrictModeWith); + } + var node = this.createNode(); + var body; + this.expectKeyword('with'); + this.expect('('); + var object = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + body = this.parseStatement(); + } + return this.finalize(node, new Node.WithStatement(object, body)); + }; + // https://tc39.github.io/ecma262/#sec-switch-statement + Parser.prototype.parseSwitchCase = function () { + var node = this.createNode(); + var test; + if (this.matchKeyword('default')) { + this.nextToken(); + test = null; + } + else { + this.expectKeyword('case'); + test = this.parseExpression(); + } + this.expect(':'); + var consequent = []; + while (true) { + if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) { + break; + } + consequent.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.SwitchCase(test, consequent)); + }; + Parser.prototype.parseSwitchStatement = function () { + var node = this.createNode(); + this.expectKeyword('switch'); + this.expect('('); + var discriminant = this.parseExpression(); + this.expect(')'); + var previousInSwitch = this.context.inSwitch; + this.context.inSwitch = true; + var cases = []; + var defaultFound = false; + this.expect('{'); + while (true) { + if (this.match('}')) { + break; + } + var clause = this.parseSwitchCase(); + if (clause.test === null) { + if (defaultFound) { + this.throwError(messages_1.Messages.MultipleDefaultsInSwitch); + } + defaultFound = true; + } + cases.push(clause); + } + this.expect('}'); + this.context.inSwitch = previousInSwitch; + return this.finalize(node, new Node.SwitchStatement(discriminant, cases)); + }; + // https://tc39.github.io/ecma262/#sec-labelled-statements + Parser.prototype.parseLabelledStatement = function () { + var node = this.createNode(); + var expr = this.parseExpression(); + var statement; + if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) { + this.nextToken(); + var id = expr; + var key = '$' + id.name; + if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name); + } + this.context.labelSet[key] = true; + var body = void 0; + if (this.matchKeyword('class')) { + this.tolerateUnexpectedToken(this.lookahead); + body = this.parseClassDeclaration(); + } + else if (this.matchKeyword('function')) { + var token = this.lookahead; + var declaration = this.parseFunctionDeclaration(); + if (this.context.strict) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction); + } + else if (declaration.generator) { + this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext); + } + body = declaration; + } + else { + body = this.parseStatement(); + } + delete this.context.labelSet[key]; + statement = new Node.LabeledStatement(id, body); + } + else { + this.consumeSemicolon(); + statement = new Node.ExpressionStatement(expr); + } + return this.finalize(node, statement); + }; + // https://tc39.github.io/ecma262/#sec-throw-statement + Parser.prototype.parseThrowStatement = function () { + var node = this.createNode(); + this.expectKeyword('throw'); + if (this.hasLineTerminator) { + this.throwError(messages_1.Messages.NewlineAfterThrow); + } + var argument = this.parseExpression(); + this.consumeSemicolon(); + return this.finalize(node, new Node.ThrowStatement(argument)); + }; + // https://tc39.github.io/ecma262/#sec-try-statement + Parser.prototype.parseCatchClause = function () { + var node = this.createNode(); + this.expectKeyword('catch'); + this.expect('('); + if (this.match(')')) { + this.throwUnexpectedToken(this.lookahead); + } + var params = []; + var param = this.parsePattern(params); + var paramMap = {}; + for (var i = 0; i < params.length; i++) { + var key = '$' + params[i].value; + if (Object.prototype.hasOwnProperty.call(paramMap, key)) { + this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value); + } + paramMap[key] = true; + } + if (this.context.strict && param.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(param.name)) { + this.tolerateError(messages_1.Messages.StrictCatchVariable); + } + } + this.expect(')'); + var body = this.parseBlock(); + return this.finalize(node, new Node.CatchClause(param, body)); + }; + Parser.prototype.parseFinallyClause = function () { + this.expectKeyword('finally'); + return this.parseBlock(); + }; + Parser.prototype.parseTryStatement = function () { + var node = this.createNode(); + this.expectKeyword('try'); + var block = this.parseBlock(); + var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null; + var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null; + if (!handler && !finalizer) { + this.throwError(messages_1.Messages.NoCatchOrFinally); + } + return this.finalize(node, new Node.TryStatement(block, handler, finalizer)); + }; + // https://tc39.github.io/ecma262/#sec-debugger-statement + Parser.prototype.parseDebuggerStatement = function () { + var node = this.createNode(); + this.expectKeyword('debugger'); + this.consumeSemicolon(); + return this.finalize(node, new Node.DebuggerStatement()); + }; + // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations + Parser.prototype.parseStatement = function () { + var statement; + switch (this.lookahead.type) { + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 6 /* NumericLiteral */: + case 8 /* StringLiteral */: + case 10 /* Template */: + case 9 /* RegularExpression */: + statement = this.parseExpressionStatement(); + break; + case 7 /* Punctuator */: + var value = this.lookahead.value; + if (value === '{') { + statement = this.parseBlock(); + } + else if (value === '(') { + statement = this.parseExpressionStatement(); + } + else if (value === ';') { + statement = this.parseEmptyStatement(); + } + else { + statement = this.parseExpressionStatement(); + } + break; + case 3 /* Identifier */: + statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement(); + break; + case 4 /* Keyword */: + switch (this.lookahead.value) { + case 'break': + statement = this.parseBreakStatement(); + break; + case 'continue': + statement = this.parseContinueStatement(); + break; + case 'debugger': + statement = this.parseDebuggerStatement(); + break; + case 'do': + statement = this.parseDoWhileStatement(); + break; + case 'for': + statement = this.parseForStatement(); + break; + case 'function': + statement = this.parseFunctionDeclaration(); + break; + case 'if': + statement = this.parseIfStatement(); + break; + case 'return': + statement = this.parseReturnStatement(); + break; + case 'switch': + statement = this.parseSwitchStatement(); + break; + case 'throw': + statement = this.parseThrowStatement(); + break; + case 'try': + statement = this.parseTryStatement(); + break; + case 'var': + statement = this.parseVariableStatement(); + break; + case 'while': + statement = this.parseWhileStatement(); + break; + case 'with': + statement = this.parseWithStatement(); + break; + default: + statement = this.parseExpressionStatement(); + break; + } + break; + default: + statement = this.throwUnexpectedToken(this.lookahead); + } + return statement; + }; + // https://tc39.github.io/ecma262/#sec-function-definitions + Parser.prototype.parseFunctionSourceElements = function () { + var node = this.createNode(); + this.expect('{'); + var body = this.parseDirectivePrologues(); + var previousLabelSet = this.context.labelSet; + var previousInIteration = this.context.inIteration; + var previousInSwitch = this.context.inSwitch; + var previousInFunctionBody = this.context.inFunctionBody; + this.context.labelSet = {}; + this.context.inIteration = false; + this.context.inSwitch = false; + this.context.inFunctionBody = true; + while (this.lookahead.type !== 2 /* EOF */) { + if (this.match('}')) { + break; + } + body.push(this.parseStatementListItem()); + } + this.expect('}'); + this.context.labelSet = previousLabelSet; + this.context.inIteration = previousInIteration; + this.context.inSwitch = previousInSwitch; + this.context.inFunctionBody = previousInFunctionBody; + return this.finalize(node, new Node.BlockStatement(body)); + }; + Parser.prototype.validateParam = function (options, param, name) { + var key = '$' + name; + if (this.context.strict) { + if (this.scanner.isRestrictedWord(name)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamName; + } + if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamDupe; + } + } + else if (!options.firstRestricted) { + if (this.scanner.isRestrictedWord(name)) { + options.firstRestricted = param; + options.message = messages_1.Messages.StrictParamName; + } + else if (this.scanner.isStrictModeReservedWord(name)) { + options.firstRestricted = param; + options.message = messages_1.Messages.StrictReservedWord; + } + else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamDupe; + } + } + /* istanbul ignore next */ + if (typeof Object.defineProperty === 'function') { + Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true }); + } + else { + options.paramSet[key] = true; + } + }; + Parser.prototype.parseRestElement = function (params) { + var node = this.createNode(); + this.expect('...'); + var arg = this.parsePattern(params); + if (this.match('=')) { + this.throwError(messages_1.Messages.DefaultRestParameter); + } + if (!this.match(')')) { + this.throwError(messages_1.Messages.ParameterAfterRestParameter); + } + return this.finalize(node, new Node.RestElement(arg)); + }; + Parser.prototype.parseFormalParameter = function (options) { + var params = []; + var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params); + for (var i = 0; i < params.length; i++) { + this.validateParam(options, params[i], params[i].value); + } + options.simple = options.simple && (param instanceof Node.Identifier); + options.params.push(param); + }; + Parser.prototype.parseFormalParameters = function (firstRestricted) { + var options; + options = { + simple: true, + params: [], + firstRestricted: firstRestricted + }; + this.expect('('); + if (!this.match(')')) { + options.paramSet = {}; + while (this.lookahead.type !== 2 /* EOF */) { + this.parseFormalParameter(options); + if (this.match(')')) { + break; + } + this.expect(','); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return { + simple: options.simple, + params: options.params, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; + }; + Parser.prototype.matchAsyncFunction = function () { + var match = this.matchContextualKeyword('async'); + if (match) { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.scanner.lex(); + this.scanner.restoreState(state); + match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function'); + } + return match; + }; + Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) { + var node = this.createNode(); + var isAsync = this.matchContextualKeyword('async'); + if (isAsync) { + this.nextToken(); + } + this.expectKeyword('function'); + var isGenerator = isAsync ? false : this.match('*'); + if (isGenerator) { + this.nextToken(); + } + var message; + var id = null; + var firstRestricted = null; + if (!identifierIsOptional || !this.match('(')) { + var token = this.lookahead; + id = this.parseVariableIdentifier(); + if (this.context.strict) { + if (this.scanner.isRestrictedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); + } + } + else { + if (this.scanner.isRestrictedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictFunctionName; + } + else if (this.scanner.isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictReservedWord; + } + } + } + var previousAllowAwait = this.context.await; + var previousAllowYield = this.context.allowYield; + this.context.await = isAsync; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(firstRestricted); + var params = formalParameters.params; + var stricted = formalParameters.stricted; + firstRestricted = formalParameters.firstRestricted; + if (formalParameters.message) { + message = formalParameters.message; + } + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = formalParameters.simple; + var body = this.parseFunctionSourceElements(); + if (this.context.strict && firstRestricted) { + this.throwUnexpectedToken(firstRestricted, message); + } + if (this.context.strict && stricted) { + this.tolerateUnexpectedToken(stricted, message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.await = previousAllowAwait; + this.context.allowYield = previousAllowYield; + return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) : + this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator)); + }; + Parser.prototype.parseFunctionExpression = function () { + var node = this.createNode(); + var isAsync = this.matchContextualKeyword('async'); + if (isAsync) { + this.nextToken(); + } + this.expectKeyword('function'); + var isGenerator = isAsync ? false : this.match('*'); + if (isGenerator) { + this.nextToken(); + } + var message; + var id = null; + var firstRestricted; + var previousAllowAwait = this.context.await; + var previousAllowYield = this.context.allowYield; + this.context.await = isAsync; + this.context.allowYield = !isGenerator; + if (!this.match('(')) { + var token = this.lookahead; + id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier(); + if (this.context.strict) { + if (this.scanner.isRestrictedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); + } + } + else { + if (this.scanner.isRestrictedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictFunctionName; + } + else if (this.scanner.isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictReservedWord; + } + } + } + var formalParameters = this.parseFormalParameters(firstRestricted); + var params = formalParameters.params; + var stricted = formalParameters.stricted; + firstRestricted = formalParameters.firstRestricted; + if (formalParameters.message) { + message = formalParameters.message; + } + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = formalParameters.simple; + var body = this.parseFunctionSourceElements(); + if (this.context.strict && firstRestricted) { + this.throwUnexpectedToken(firstRestricted, message); + } + if (this.context.strict && stricted) { + this.tolerateUnexpectedToken(stricted, message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.await = previousAllowAwait; + this.context.allowYield = previousAllowYield; + return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) : + this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator)); + }; + // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive + Parser.prototype.parseDirective = function () { + var token = this.lookahead; + var node = this.createNode(); + var expr = this.parseExpression(); + var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null; + this.consumeSemicolon(); + return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr)); + }; + Parser.prototype.parseDirectivePrologues = function () { + var firstRestricted = null; + var body = []; + while (true) { + var token = this.lookahead; + if (token.type !== 8 /* StringLiteral */) { + break; + } + var statement = this.parseDirective(); + body.push(statement); + var directive = statement.directive; + if (typeof directive !== 'string') { + break; + } + if (directive === 'use strict') { + this.context.strict = true; + if (firstRestricted) { + this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral); + } + if (!this.context.allowStrictDirective) { + this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective); + } + } + else { + if (!firstRestricted && token.octal) { + firstRestricted = token; + } + } + } + return body; + }; + // https://tc39.github.io/ecma262/#sec-method-definitions + Parser.prototype.qualifiedPropertyName = function (token) { + switch (token.type) { + case 3 /* Identifier */: + case 8 /* StringLiteral */: + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 6 /* NumericLiteral */: + case 4 /* Keyword */: + return true; + case 7 /* Punctuator */: + return token.value === '['; + default: + break; + } + return false; + }; + Parser.prototype.parseGetterMethod = function () { + var node = this.createNode(); + var isGenerator = false; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(); + if (formalParameters.params.length > 0) { + this.tolerateError(messages_1.Messages.BadGetterArity); + } + var method = this.parsePropertyMethod(formalParameters); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); + }; + Parser.prototype.parseSetterMethod = function () { + var node = this.createNode(); + var isGenerator = false; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(); + if (formalParameters.params.length !== 1) { + this.tolerateError(messages_1.Messages.BadSetterArity); + } + else if (formalParameters.params[0] instanceof Node.RestElement) { + this.tolerateError(messages_1.Messages.BadSetterRestParameter); + } + var method = this.parsePropertyMethod(formalParameters); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); + }; + Parser.prototype.parseGeneratorMethod = function () { + var node = this.createNode(); + var isGenerator = true; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var params = this.parseFormalParameters(); + this.context.allowYield = false; + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); + }; + // https://tc39.github.io/ecma262/#sec-generator-function-definitions + Parser.prototype.isStartOfExpression = function () { + var start = true; + var value = this.lookahead.value; + switch (this.lookahead.type) { + case 7 /* Punctuator */: + start = (value === '[') || (value === '(') || (value === '{') || + (value === '+') || (value === '-') || + (value === '!') || (value === '~') || + (value === '++') || (value === '--') || + (value === '/') || (value === '/='); // regular expression literal + break; + case 4 /* Keyword */: + start = (value === 'class') || (value === 'delete') || + (value === 'function') || (value === 'let') || (value === 'new') || + (value === 'super') || (value === 'this') || (value === 'typeof') || + (value === 'void') || (value === 'yield'); + break; + default: + break; + } + return start; + }; + Parser.prototype.parseYieldExpression = function () { + var node = this.createNode(); + this.expectKeyword('yield'); + var argument = null; + var delegate = false; + if (!this.hasLineTerminator) { + var previousAllowYield = this.context.allowYield; + this.context.allowYield = false; + delegate = this.match('*'); + if (delegate) { + this.nextToken(); + argument = this.parseAssignmentExpression(); + } + else if (this.isStartOfExpression()) { + argument = this.parseAssignmentExpression(); + } + this.context.allowYield = previousAllowYield; + } + return this.finalize(node, new Node.YieldExpression(argument, delegate)); + }; + // https://tc39.github.io/ecma262/#sec-class-definitions + Parser.prototype.parseClassElement = function (hasConstructor) { + var token = this.lookahead; + var node = this.createNode(); + var kind = ''; + var key = null; + var value = null; + var computed = false; + var method = false; + var isStatic = false; + var isAsync = false; + if (this.match('*')) { + this.nextToken(); + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + var id = key; + if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) { + token = this.lookahead; + isStatic = true; + computed = this.match('['); + if (this.match('*')) { + this.nextToken(); + } + else { + key = this.parseObjectPropertyKey(); + } + } + if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) { + var punctuator = this.lookahead.value; + if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') { + isAsync = true; + token = this.lookahead; + key = this.parseObjectPropertyKey(); + if (token.type === 3 /* Identifier */ && token.value === 'constructor') { + this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync); + } + } + } + } + var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); + if (token.type === 3 /* Identifier */) { + if (token.value === 'get' && lookaheadPropertyKey) { + kind = 'get'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.context.allowYield = false; + value = this.parseGetterMethod(); + } + else if (token.value === 'set' && lookaheadPropertyKey) { + kind = 'set'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseSetterMethod(); + } + } + else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { + kind = 'init'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseGeneratorMethod(); + method = true; + } + if (!kind && key && this.match('(')) { + kind = 'init'; + value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); + method = true; + } + if (!kind) { + this.throwUnexpectedToken(this.lookahead); + } + if (kind === 'init') { + kind = 'method'; + } + if (!computed) { + if (isStatic && this.isPropertyKey(key, 'prototype')) { + this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype); + } + if (!isStatic && this.isPropertyKey(key, 'constructor')) { + if (kind !== 'method' || !method || (value && value.generator)) { + this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod); + } + if (hasConstructor.value) { + this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor); + } + else { + hasConstructor.value = true; + } + kind = 'constructor'; + } + } + return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic)); + }; + Parser.prototype.parseClassElementList = function () { + var body = []; + var hasConstructor = { value: false }; + this.expect('{'); + while (!this.match('}')) { + if (this.match(';')) { + this.nextToken(); + } + else { + body.push(this.parseClassElement(hasConstructor)); + } + } + this.expect('}'); + return body; + }; + Parser.prototype.parseClassBody = function () { + var node = this.createNode(); + var elementList = this.parseClassElementList(); + return this.finalize(node, new Node.ClassBody(elementList)); + }; + Parser.prototype.parseClassDeclaration = function (identifierIsOptional) { + var node = this.createNode(); + var previousStrict = this.context.strict; + this.context.strict = true; + this.expectKeyword('class'); + var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier(); + var superClass = null; + if (this.matchKeyword('extends')) { + this.nextToken(); + superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); + } + var classBody = this.parseClassBody(); + this.context.strict = previousStrict; + return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody)); + }; + Parser.prototype.parseClassExpression = function () { + var node = this.createNode(); + var previousStrict = this.context.strict; + this.context.strict = true; + this.expectKeyword('class'); + var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null; + var superClass = null; + if (this.matchKeyword('extends')) { + this.nextToken(); + superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); + } + var classBody = this.parseClassBody(); + this.context.strict = previousStrict; + return this.finalize(node, new Node.ClassExpression(id, superClass, classBody)); + }; + // https://tc39.github.io/ecma262/#sec-scripts + // https://tc39.github.io/ecma262/#sec-modules + Parser.prototype.parseModule = function () { + this.context.strict = true; + this.context.isModule = true; + this.scanner.isModule = true; + var node = this.createNode(); + var body = this.parseDirectivePrologues(); + while (this.lookahead.type !== 2 /* EOF */) { + body.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.Module(body)); + }; + Parser.prototype.parseScript = function () { + var node = this.createNode(); + var body = this.parseDirectivePrologues(); + while (this.lookahead.type !== 2 /* EOF */) { + body.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.Script(body)); + }; + // https://tc39.github.io/ecma262/#sec-imports + Parser.prototype.parseModuleSpecifier = function () { + var node = this.createNode(); + if (this.lookahead.type !== 8 /* StringLiteral */) { + this.throwError(messages_1.Messages.InvalidModuleSpecifier); + } + var token = this.nextToken(); + var raw = this.getTokenRaw(token); + return this.finalize(node, new Node.Literal(token.value, raw)); + }; + // import {} ...; + Parser.prototype.parseImportSpecifier = function () { + var node = this.createNode(); + var imported; + var local; + if (this.lookahead.type === 3 /* Identifier */) { + imported = this.parseVariableIdentifier(); + local = imported; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + local = this.parseVariableIdentifier(); + } + } + else { + imported = this.parseIdentifierName(); + local = imported; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + local = this.parseVariableIdentifier(); + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + } + return this.finalize(node, new Node.ImportSpecifier(local, imported)); + }; + // {foo, bar as bas} + Parser.prototype.parseNamedImports = function () { + this.expect('{'); + var specifiers = []; + while (!this.match('}')) { + specifiers.push(this.parseImportSpecifier()); + if (!this.match('}')) { + this.expect(','); + } + } + this.expect('}'); + return specifiers; + }; + // import ...; + Parser.prototype.parseImportDefaultSpecifier = function () { + var node = this.createNode(); + var local = this.parseIdentifierName(); + return this.finalize(node, new Node.ImportDefaultSpecifier(local)); + }; + // import <* as foo> ...; + Parser.prototype.parseImportNamespaceSpecifier = function () { + var node = this.createNode(); + this.expect('*'); + if (!this.matchContextualKeyword('as')) { + this.throwError(messages_1.Messages.NoAsAfterImportNamespace); + } + this.nextToken(); + var local = this.parseIdentifierName(); + return this.finalize(node, new Node.ImportNamespaceSpecifier(local)); + }; + Parser.prototype.parseImportDeclaration = function () { + if (this.context.inFunctionBody) { + this.throwError(messages_1.Messages.IllegalImportDeclaration); + } + var node = this.createNode(); + this.expectKeyword('import'); + var src; + var specifiers = []; + if (this.lookahead.type === 8 /* StringLiteral */) { + // import 'foo'; + src = this.parseModuleSpecifier(); + } + else { + if (this.match('{')) { + // import {bar} + specifiers = specifiers.concat(this.parseNamedImports()); + } + else if (this.match('*')) { + // import * as foo + specifiers.push(this.parseImportNamespaceSpecifier()); + } + else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) { + // import foo + specifiers.push(this.parseImportDefaultSpecifier()); + if (this.match(',')) { + this.nextToken(); + if (this.match('*')) { + // import foo, * as foo + specifiers.push(this.parseImportNamespaceSpecifier()); + } + else if (this.match('{')) { + // import foo, {bar} + specifiers = specifiers.concat(this.parseNamedImports()); + } + else { + this.throwUnexpectedToken(this.lookahead); + } + } + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + if (!this.matchContextualKeyword('from')) { + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + this.nextToken(); + src = this.parseModuleSpecifier(); + } + this.consumeSemicolon(); + return this.finalize(node, new Node.ImportDeclaration(specifiers, src)); + }; + // https://tc39.github.io/ecma262/#sec-exports + Parser.prototype.parseExportSpecifier = function () { + var node = this.createNode(); + var local = this.parseIdentifierName(); + var exported = local; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + exported = this.parseIdentifierName(); + } + return this.finalize(node, new Node.ExportSpecifier(local, exported)); + }; + Parser.prototype.parseExportDeclaration = function () { + if (this.context.inFunctionBody) { + this.throwError(messages_1.Messages.IllegalExportDeclaration); + } + var node = this.createNode(); + this.expectKeyword('export'); + var exportDeclaration; + if (this.matchKeyword('default')) { + // export default ... + this.nextToken(); + if (this.matchKeyword('function')) { + // export default function foo () {} + // export default function () {} + var declaration = this.parseFunctionDeclaration(true); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else if (this.matchKeyword('class')) { + // export default class foo {} + var declaration = this.parseClassDeclaration(true); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else if (this.matchContextualKeyword('async')) { + // export default async function f () {} + // export default async function () {} + // export default async x => x + var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression(); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else { + if (this.matchContextualKeyword('from')) { + this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value); + } + // export default {}; + // export default []; + // export default (1 + 2); + var declaration = this.match('{') ? this.parseObjectInitializer() : + this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression(); + this.consumeSemicolon(); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + } + else if (this.match('*')) { + // export * from 'foo'; + this.nextToken(); + if (!this.matchContextualKeyword('from')) { + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + this.nextToken(); + var src = this.parseModuleSpecifier(); + this.consumeSemicolon(); + exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src)); + } + else if (this.lookahead.type === 4 /* Keyword */) { + // export var f = 1; + var declaration = void 0; + switch (this.lookahead.value) { + case 'let': + case 'const': + declaration = this.parseLexicalDeclaration({ inFor: false }); + break; + case 'var': + case 'class': + case 'function': + declaration = this.parseStatementListItem(); + break; + default: + this.throwUnexpectedToken(this.lookahead); + } + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); + } + else if (this.matchAsyncFunction()) { + var declaration = this.parseFunctionDeclaration(); + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); + } + else { + var specifiers = []; + var source = null; + var isExportFromIdentifier = false; + this.expect('{'); + while (!this.match('}')) { + isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default'); + specifiers.push(this.parseExportSpecifier()); + if (!this.match('}')) { + this.expect(','); + } + } + this.expect('}'); + if (this.matchContextualKeyword('from')) { + // export {default} from 'foo'; + // export {foo} from 'foo'; + this.nextToken(); + source = this.parseModuleSpecifier(); + this.consumeSemicolon(); + } + else if (isExportFromIdentifier) { + // export {default}; // missing fromClause + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + else { + // export {foo}; + this.consumeSemicolon(); + } + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source)); + } + return exportDeclaration; + }; + return Parser; + }()); + exports.Parser = Parser; - // Options matching. - options = options || {}; - // Of course we collect tokens here. - options.tokens = true; - extra.tokens = []; - extra.tokenValues = []; - extra.tokenize = true; - extra.delegate = delegate; +/***/ }, +/* 9 */ +/***/ function(module, exports) { - // The following two fields are necessary to compute the Regex tokens. - extra.openParenToken = -1; - extra.openCurlyToken = -1; + "use strict"; + // Ensure the condition is true, otherwise throw an error. + // This is only to have a better contract semantic, i.e. another safety net + // to catch a logic error. The condition shall be fulfilled in normal case. + // Do NOT use this to enforce a certain condition on any user input. + Object.defineProperty(exports, "__esModule", { value: true }); + function assert(condition, message) { + /* istanbul ignore if */ + if (!condition) { + throw new Error('ASSERT: ' + message); + } + } + exports.assert = assert; - extra.range = (typeof options.range === 'boolean') && options.range; - extra.loc = (typeof options.loc === 'boolean') && options.loc; - if (typeof options.comment === 'boolean' && options.comment) { - extra.comments = []; - } - if (typeof options.tolerant === 'boolean' && options.tolerant) { - extra.errors = []; - } +/***/ }, +/* 10 */ +/***/ function(module, exports) { - try { - peek(); - if (lookahead.type === Token.EOF) { - return extra.tokens; - } + "use strict"; + /* tslint:disable:max-classes-per-file */ + Object.defineProperty(exports, "__esModule", { value: true }); + var ErrorHandler = (function () { + function ErrorHandler() { + this.errors = []; + this.tolerant = false; + } + ErrorHandler.prototype.recordError = function (error) { + this.errors.push(error); + }; + ErrorHandler.prototype.tolerate = function (error) { + if (this.tolerant) { + this.recordError(error); + } + else { + throw error; + } + }; + ErrorHandler.prototype.constructError = function (msg, column) { + var error = new Error(msg); + try { + throw error; + } + catch (base) { + /* istanbul ignore else */ + if (Object.create && Object.defineProperty) { + error = Object.create(base); + Object.defineProperty(error, 'column', { value: column }); + } + } + /* istanbul ignore next */ + return error; + }; + ErrorHandler.prototype.createError = function (index, line, col, description) { + var msg = 'Line ' + line + ': ' + description; + var error = this.constructError(msg, col); + error.index = index; + error.lineNumber = line; + error.description = description; + return error; + }; + ErrorHandler.prototype.throwError = function (index, line, col, description) { + throw this.createError(index, line, col, description); + }; + ErrorHandler.prototype.tolerateError = function (index, line, col, description) { + var error = this.createError(index, line, col, description); + if (this.tolerant) { + this.recordError(error); + } + else { + throw error; + } + }; + return ErrorHandler; + }()); + exports.ErrorHandler = ErrorHandler; - lex(); - while (lookahead.type !== Token.EOF) { - try { - lex(); - } catch (lexError) { - if (extra.errors) { - recordError(lexError); - // We have to break on the first error - // to avoid infinite loops. - break; - } else { - throw lexError; - } - } - } - tokens = extra.tokens; - if (typeof extra.errors !== 'undefined') { - tokens.errors = extra.errors; - } - } catch (e) { - throw e; - } finally { - extra = {}; - } - return tokens; - } +/***/ }, +/* 11 */ +/***/ function(module, exports) { - function parse(code, options) { - var program, toString; - - toString = String; - if (typeof code !== 'string' && !(code instanceof String)) { - code = toString(code); - } - - source = code; - index = 0; - lineNumber = (source.length > 0) ? 1 : 0; - lineStart = 0; - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - length = source.length; - lookahead = null; - state = { - allowIn: true, - allowYield: true, - labelSet: {}, - inFunctionBody: false, - inIteration: false, - inSwitch: false, - lastCommentStart: -1, - curlyStack: [], - sourceType: 'script' - }; - strict = false; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + // Error messages should be identical to V8. + exports.Messages = { + BadGetterArity: 'Getter must not have any formal parameters', + BadSetterArity: 'Setter must have exactly one formal parameter', + BadSetterRestParameter: 'Setter function argument must not be a rest parameter', + ConstructorIsAsync: 'Class constructor may not be an async method', + ConstructorSpecialMethod: 'Class constructor may not be an accessor', + DeclarationMissingInitializer: 'Missing initializer in %0 declaration', + DefaultRestParameter: 'Unexpected token =', + DuplicateBinding: 'Duplicate binding %0', + DuplicateConstructor: 'A class may only have one constructor', + DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals', + ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer', + GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts', + IllegalBreak: 'Illegal break statement', + IllegalContinue: 'Illegal continue statement', + IllegalExportDeclaration: 'Unexpected token', + IllegalImportDeclaration: 'Unexpected token', + IllegalLanguageModeDirective: 'Illegal \'use strict\' directive in function with non-simple parameter list', + IllegalReturn: 'Illegal return statement', + InvalidEscapedReservedWord: 'Keyword must not contain escaped characters', + InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence', + InvalidLHSInAssignment: 'Invalid left-hand side in assignment', + InvalidLHSInForIn: 'Invalid left-hand side in for-in', + InvalidLHSInForLoop: 'Invalid left-hand side in for-loop', + InvalidModuleSpecifier: 'Unexpected token', + InvalidRegExp: 'Invalid regular expression', + LetInLexicalBinding: 'let is disallowed as a lexically bound name', + MissingFromClause: 'Unexpected token', + MultipleDefaultsInSwitch: 'More than one default clause in switch statement', + NewlineAfterThrow: 'Illegal newline after throw', + NoAsAfterImportNamespace: 'Unexpected token', + NoCatchOrFinally: 'Missing catch or finally after try', + ParameterAfterRestParameter: 'Rest parameter must be last formal parameter', + Redeclaration: '%0 \'%1\' has already been declared', + StaticPrototype: 'Classes may not have static property named prototype', + StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', + StrictDelete: 'Delete of an unqualified identifier in strict mode.', + StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block', + StrictFunctionName: 'Function name may not be eval or arguments in strict mode', + StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', + StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', + StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', + StrictModeWith: 'Strict mode code may not include a with statement', + StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', + StrictParamDupe: 'Strict mode function may not have duplicate parameter names', + StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', + StrictReservedWord: 'Use of future reserved word in strict mode', + StrictVarName: 'Variable name may not be eval or arguments in strict mode', + TemplateOctalLiteral: 'Octal literals are not allowed in template strings.', + UnexpectedEOS: 'Unexpected end of input', + UnexpectedIdentifier: 'Unexpected identifier', + UnexpectedNumber: 'Unexpected number', + UnexpectedReserved: 'Unexpected reserved word', + UnexpectedString: 'Unexpected string', + UnexpectedTemplate: 'Unexpected quasi %0', + UnexpectedToken: 'Unexpected token %0', + UnexpectedTokenIllegal: 'Unexpected token ILLEGAL', + UnknownLabel: 'Undefined label \'%0\'', + UnterminatedRegExp: 'Invalid regular expression: missing /' + }; - extra = {}; - if (typeof options !== 'undefined') { - extra.range = (typeof options.range === 'boolean') && options.range; - extra.loc = (typeof options.loc === 'boolean') && options.loc; - extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment; - if (extra.loc && options.source !== null && options.source !== undefined) { - extra.source = toString(options.source); - } +/***/ }, +/* 12 */ +/***/ function(module, exports, __webpack_require__) { - if (typeof options.tokens === 'boolean' && options.tokens) { - extra.tokens = []; - } - if (typeof options.comment === 'boolean' && options.comment) { - extra.comments = []; - } - if (typeof options.tolerant === 'boolean' && options.tolerant) { - extra.errors = []; - } - if (extra.attachComment) { - extra.range = true; - extra.comments = []; - extra.bottomRightStack = []; - extra.trailingComments = []; - extra.leadingComments = []; - } - if (options.sourceType === 'module') { - // very restrictive condition for now - state.sourceType = options.sourceType; - strict = true; - } - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var assert_1 = __webpack_require__(9); + var character_1 = __webpack_require__(4); + var messages_1 = __webpack_require__(11); + function hexValue(ch) { + return '0123456789abcdef'.indexOf(ch.toLowerCase()); + } + function octalValue(ch) { + return '01234567'.indexOf(ch); + } + var Scanner = (function () { + function Scanner(code, handler) { + this.source = code; + this.errorHandler = handler; + this.trackComment = false; + this.isModule = false; + this.length = code.length; + this.index = 0; + this.lineNumber = (code.length > 0) ? 1 : 0; + this.lineStart = 0; + this.curlyStack = []; + } + Scanner.prototype.saveState = function () { + return { + index: this.index, + lineNumber: this.lineNumber, + lineStart: this.lineStart + }; + }; + Scanner.prototype.restoreState = function (state) { + this.index = state.index; + this.lineNumber = state.lineNumber; + this.lineStart = state.lineStart; + }; + Scanner.prototype.eof = function () { + return this.index >= this.length; + }; + Scanner.prototype.throwUnexpectedToken = function (message) { + if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } + return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); + }; + Scanner.prototype.tolerateUnexpectedToken = function (message) { + if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } + this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); + }; + // https://tc39.github.io/ecma262/#sec-comments + Scanner.prototype.skipSingleLineComment = function (offset) { + var comments = []; + var start, loc; + if (this.trackComment) { + comments = []; + start = this.index - offset; + loc = { + start: { + line: this.lineNumber, + column: this.index - this.lineStart - offset + }, + end: {} + }; + } + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + ++this.index; + if (character_1.Character.isLineTerminator(ch)) { + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart - 1 + }; + var entry = { + multiLine: false, + slice: [start + offset, this.index - 1], + range: [start, this.index - 1], + loc: loc + }; + comments.push(entry); + } + if (ch === 13 && this.source.charCodeAt(this.index) === 10) { + ++this.index; + } + ++this.lineNumber; + this.lineStart = this.index; + return comments; + } + } + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: false, + slice: [start + offset, this.index], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + return comments; + }; + Scanner.prototype.skipMultiLineComment = function () { + var comments = []; + var start, loc; + if (this.trackComment) { + comments = []; + start = this.index - 2; + loc = { + start: { + line: this.lineNumber, + column: this.index - this.lineStart - 2 + }, + end: {} + }; + } + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + if (character_1.Character.isLineTerminator(ch)) { + if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) { + ++this.index; + } + ++this.lineNumber; + ++this.index; + this.lineStart = this.index; + } + else if (ch === 0x2A) { + // Block comment ends with '*/'. + if (this.source.charCodeAt(this.index + 1) === 0x2F) { + this.index += 2; + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: true, + slice: [start + 2, this.index - 2], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + return comments; + } + ++this.index; + } + else { + ++this.index; + } + } + // Ran off the end of the file - the whole thing is a comment + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: true, + slice: [start + 2, this.index], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + this.tolerateUnexpectedToken(); + return comments; + }; + Scanner.prototype.scanComments = function () { + var comments; + if (this.trackComment) { + comments = []; + } + var start = (this.index === 0); + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + if (character_1.Character.isWhiteSpace(ch)) { + ++this.index; + } + else if (character_1.Character.isLineTerminator(ch)) { + ++this.index; + if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) { + ++this.index; + } + ++this.lineNumber; + this.lineStart = this.index; + start = true; + } + else if (ch === 0x2F) { + ch = this.source.charCodeAt(this.index + 1); + if (ch === 0x2F) { + this.index += 2; + var comment = this.skipSingleLineComment(2); + if (this.trackComment) { + comments = comments.concat(comment); + } + start = true; + } + else if (ch === 0x2A) { + this.index += 2; + var comment = this.skipMultiLineComment(); + if (this.trackComment) { + comments = comments.concat(comment); + } + } + else { + break; + } + } + else if (start && ch === 0x2D) { + // U+003E is '>' + if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) { + // '-->' is a single-line comment + this.index += 3; + var comment = this.skipSingleLineComment(3); + if (this.trackComment) { + comments = comments.concat(comment); + } + } + else { + break; + } + } + else if (ch === 0x3C && !this.isModule) { + if (this.source.slice(this.index + 1, this.index + 4) === '!--') { + this.index += 4; // ` x -= 2 + self.operator = self.right.operator + "="; + self.right = self.right.right; + } + else if (self.right.right instanceof AST_SymbolRef + && self.right.right.name == self.left.name + && member(self.right.operator, ASSIGN_OPS_COMMUTATIVE) + && !self.right.left.has_side_effects(compressor)) { + // x = 2 & x ---> x &= 2 + self.operator = self.right.operator + "="; + self.right = self.right.left; + } } return self; }); @@ -21155,8 +23390,8 @@ merge(Compressor.prototype, { return AST_Seq.cons(car, self); } var cond = self.condition.evaluate(compressor); - if (cond.length > 1) { - if (cond[1]) { + if (cond !== self.condition) { + if (cond) { compressor.warn("Condition always true [{file}:{line},{col}]", self.start); return maintain_this_binding(compressor.parent(), self, self.consequent); } else { @@ -21164,28 +23399,38 @@ merge(Compressor.prototype, { return maintain_this_binding(compressor.parent(), self, self.alternative); } } - var negated = cond[0].negate(compressor); - if (best_of(cond[0], negated) === negated) { + var negated = cond.negate(compressor, first_in_statement(compressor)); + if (best_of(compressor, cond, negated) === negated) { self = make_node(AST_Conditional, self, { condition: negated, consequent: self.alternative, alternative: self.consequent }); } + var condition = self.condition; var consequent = self.consequent; var alternative = self.alternative; + // x?x:y --> x||y + if (condition instanceof AST_SymbolRef + && consequent instanceof AST_SymbolRef + && condition.definition() === consequent.definition()) { + return make_node(AST_Binary, self, { + operator: "||", + left: condition, + right: alternative + }); + } + // if (foo) exp = something; else exp = something_else; + // | + // v + // exp = foo ? something : something_else; if (consequent instanceof AST_Assign && alternative instanceof AST_Assign && consequent.operator == alternative.operator && consequent.left.equivalent_to(alternative.left) - && !consequent.left.has_side_effects(compressor) - ) { - /* - * Stuff like this: - * if (foo) exp = something; else exp = something_else; - * ==> - * exp = foo ? something : something_else; - */ + && (!self.condition.has_side_effects(compressor) + || consequent.operator == "=" + && !consequent.left.has_side_effects(compressor))) { return make_node(AST_Assign, self, { operator: consequent.operator, left: consequent.left, @@ -21196,25 +23441,19 @@ merge(Compressor.prototype, { }) }); } + // x ? y(a) : y(b) --> y(x ? a : b) if (consequent instanceof AST_Call && alternative.TYPE === consequent.TYPE - && consequent.args.length == alternative.args.length - && !consequent.expression.has_side_effects(compressor) - && consequent.expression.equivalent_to(alternative.expression)) { - if (consequent.args.length == 0) { - return make_node(AST_Seq, self, { - car: self.condition, - cdr: consequent - }); - } - if (consequent.args.length == 1) { - consequent.args[0] = make_node(AST_Conditional, self, { - condition: self.condition, - consequent: consequent.args[0], - alternative: alternative.args[0] - }); - return consequent; - } + && consequent.args.length == 1 + && alternative.args.length == 1 + && consequent.expression.equivalent_to(alternative.expression) + && !consequent.expression.has_side_effects(compressor)) { + consequent.args[0] = make_node(AST_Conditional, self, { + condition: self.condition, + consequent: consequent.args[0], + alternative: alternative.args[0] + }); + return consequent; } // x?y?z:a:a --> x&&y?z:a if (consequent instanceof AST_Conditional @@ -21229,16 +23468,12 @@ merge(Compressor.prototype, { alternative: alternative }); } - // y?1:1 --> 1 - if (consequent.is_constant(compressor) - && alternative.is_constant(compressor) - && consequent.equivalent_to(alternative)) { - var consequent_value = consequent.constant_value(compressor); - if (self.condition.has_side_effects(compressor)) { - return AST_Seq.from_array([self.condition, make_node_from_constant(compressor, consequent_value, self)]); - } else { - return make_node_from_constant(compressor, consequent_value, self); - } + // x ? y : y --> x, y + if (consequent.equivalent_to(alternative)) { + return make_node(AST_Seq, self, { + car: self.condition, + cdr: consequent + }).optimize(compressor); } if (is_true(self.consequent)) { @@ -21354,10 +23589,19 @@ merge(Compressor.prototype, { }); } } + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); + } return self; }); OPT(AST_Dot, function(self, compressor){ + var def = self.resolve_defines(compressor); + if (def) { + return def.optimize(compressor); + } var prop = self.property; if (RESERVED_WORDS(prop) && !compressor.option("screw_ie8")) { return make_node(AST_Sub, self, { @@ -21367,12 +23611,42 @@ merge(Compressor.prototype, { }) }).optimize(compressor); } - return self.evaluate(compressor)[0]; + if (compressor.option("unsafe_proto") + && self.expression instanceof AST_Dot + && self.expression.property == "prototype") { + var exp = self.expression.expression; + if (exp instanceof AST_SymbolRef && exp.undeclared()) switch (exp.name) { + case "Array": + self.expression = make_node(AST_Array, self.expression, { + elements: [] + }); + break; + case "Object": + self.expression = make_node(AST_Object, self.expression, { + properties: [] + }); + break; + case "String": + self.expression = make_node(AST_String, self.expression, { + value: "" + }); + break; + } + } + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); + } + return self; }); function literals_in_boolean_context(self, compressor) { - if (compressor.option("booleans") && compressor.in_boolean_context() && !self.has_side_effects(compressor)) { - return make_node(AST_True, self); + if (compressor.option("booleans") && compressor.in_boolean_context()) { + return best_of(compressor, self, make_node(AST_Seq, self, { + car: self, + cdr: make_node(AST_True, self) + }).optimize(compressor)); } return self; }; @@ -21381,12 +23655,20 @@ merge(Compressor.prototype, { OPT(AST_RegExp, literals_in_boolean_context); OPT(AST_Return, function(self, compressor){ - if (self.value instanceof AST_Undefined) { + if (self.value && is_undefined(self.value, compressor)) { self.value = null; } return self; }); + OPT(AST_VarDef, function(self, compressor){ + var defines = compressor.option("global_defs"); + if (defines && HOP(defines, self.name.name)) { + compressor.warn('global_defs ' + self.name.name + ' redefined [{file}:{line},{col}]', self.start); + } + return self; + }); + })(); /*********************************************************************** @@ -21451,7 +23733,7 @@ function SourceMap(options) { var orig_map = options.orig && new MOZ_SourceMap.SourceMapConsumer(options.orig); if (orig_map && Array.isArray(options.orig.sources)) { - options.orig.sources.forEach(function(source) { + orig_map._sources.toArray().forEach(function(source) { var sourceContent = orig_map.sourceContentFor(source, true); if (sourceContent) { generator.setSourceContent(source, sourceContent); @@ -21600,23 +23882,19 @@ function SourceMap(options) { }, Property: function(M) { var key = M.key; - var name = key.type == "Identifier" ? key.name : key.value; var args = { start : my_start_token(key), end : my_end_token(M.value), - key : name, + key : key.type == "Identifier" ? key.name : key.value, value : from_moz(M.value) }; - switch (M.kind) { - case "init": - return new AST_ObjectKeyVal(args); - case "set": - args.value.name = from_moz(key); - return new AST_ObjectSetter(args); - case "get": - args.value.name = from_moz(key); - return new AST_ObjectGetter(args); - } + if (M.kind == "init") return new AST_ObjectKeyVal(args); + args.key = new AST_SymbolAccessor({ + name: args.key + }); + args.value = new AST_Accessor(args.value); + if (M.kind == "get") return new AST_ObjectGetter(args); + if (M.kind == "set") return new AST_ObjectSetter(args); }, ArrayExpression: function(M) { return new AST_Array({ @@ -21745,10 +24023,7 @@ function SourceMap(options) { map("CallExpression", AST_Call, "callee>expression, arguments@args"); def_to_moz(AST_Toplevel, function To_Moz_Program(M) { - return { - type: "Program", - body: M.body.map(to_moz) - }; + return to_moz_scope("Program", M); }); def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) { @@ -21756,7 +24031,7 @@ function SourceMap(options) { type: "FunctionDeclaration", id: to_moz(M.name), params: M.argnames.map(to_moz), - body: to_moz_block(M) + body: to_moz_scope("BlockStatement", M) } }); @@ -21765,7 +24040,7 @@ function SourceMap(options) { type: "FunctionExpression", id: to_moz(M.name), params: M.argnames.map(to_moz), - body: to_moz_block(M) + body: to_moz_scope("BlockStatement", M) } }); @@ -21871,11 +24146,10 @@ function SourceMap(options) { }); def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) { - var key = ( - is_identifier(M.key) - ? {type: "Identifier", name: M.key} - : {type: "Literal", value: M.key} - ); + var key = { + type: "Literal", + value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key + }; var kind; if (M instanceof AST_ObjectKeyVal) { kind = "init"; @@ -22036,8 +24310,8 @@ function SourceMap(options) { moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")( exports, my_start_token, my_end_token, from_moz ); - me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")( - to_moz, to_moz_block + me_to_moz = new Function("to_moz", "to_moz_block", "to_moz_scope", "return(" + me_to_moz + ")")( + to_moz, to_moz_block, to_moz_scope ); MOZ_TO_ME[moztype] = moz_to_me; def_to_moz(mytype, me_to_moz); @@ -22095,6 +24369,16 @@ function SourceMap(options) { }; }; + function to_moz_scope(type, node) { + var body = node.body.map(to_moz); + if (node.body[0] instanceof AST_SimpleStatement && node.body[0].body instanceof AST_String) { + body.unshift(to_moz(new AST_EmptyStatement(node.body[0]))); + } + return { + type: type, + body: body + }; + }; })(); /*********************************************************************** @@ -22143,7 +24427,15 @@ function SourceMap(options) { "use strict"; function find_builtins() { - var a = []; + // NaN will be included due to Number.NaN + var a = [ + "null", + "true", + "false", + "Infinity", + "-Infinity", + "undefined", + ]; [ Object, Array, Function, Number, String, Boolean, Error, Math, Date, RegExp @@ -22161,11 +24453,12 @@ function find_builtins() { function mangle_properties(ast, options) { options = defaults(options, { - reserved : null, - cache : null, - only_cache : false, - regex : null, - ignore_quoted : false + cache: null, + debug: false, + ignore_quoted: false, + only_cache: false, + regex: null, + reserved: null, }); var reserved = options.reserved; @@ -22183,6 +24476,15 @@ function mangle_properties(ast, options) { var regex = options.regex; var ignore_quoted = options.ignore_quoted; + // note debug is either false (disabled), or a string of the debug suffix to use (enabled). + // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true' + // the same as passing an empty string. + var debug = (options.debug !== false); + var debug_name_suffix; + if (debug) { + debug_name_suffix = (options.debug === true ? "" : options.debug); + } + var names_to_mangle = []; var unmangleable = []; var ignored = {}; @@ -22243,7 +24545,7 @@ function mangle_properties(ast, options) { if (options.only_cache) { return cache.props.has(name); } - if (/^[0-9.]+$/.test(name)) return false; + if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false; return true; } @@ -22276,9 +24578,25 @@ function mangle_properties(ast, options) { var mangled = cache.props.get(name); if (!mangled) { - do { - mangled = base54(++cache.cname); - } while (!can_mangle(mangled)); + if (debug) { + // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_. + var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_"; + + if (can_mangle(debug_mangled) && !(ignore_quoted && debug_mangled in ignored)) { + mangled = debug_mangled; + } + } + + // either debug mode is off, or it is on and we could not use the mangled name + if (!mangled) { + // note can_mangle() does not check if the name collides with the 'ignored' set + // (filled with quoted properties when ignore_quoted set). Make sure we add this + // check so we don't collide with a quoted name. + do { + mangled = base54(++cache.cname); + } while (!can_mangle(mangled) || (ignore_quoted && mangled in ignored)); + } + cache.props.set(name, mangled); } return mangled; @@ -22328,44 +24646,96 @@ function mangle_properties(ast, options) { } +exports["Compressor"] = Compressor; +exports["DefaultsError"] = DefaultsError; +exports["Dictionary"] = Dictionary; +exports["JS_Parse_Error"] = JS_Parse_Error; +exports["MAP"] = MAP; +exports["OutputStream"] = OutputStream; +exports["SourceMap"] = SourceMap; +exports["TreeTransformer"] = TreeTransformer; +exports["TreeWalker"] = TreeWalker; +exports["base54"] = base54; +exports["defaults"] = defaults; +exports["mangle_properties"] = mangle_properties; +exports["merge"] = merge; +exports["parse"] = parse; +exports["push_uniq"] = push_uniq; +exports["string_template"] = string_template; +exports["tokenizer"] = tokenizer; +exports["is_identifier"] = is_identifier; +exports["SymbolDef"] = SymbolDef; + AST_Node.warn_function = function(txt) { logger.error("uglifyjs WARN: " + txt); }; + +exports.AST_Node.warn_function = function(txt) { + console.error("WARN: %s", txt); +}; + +function read_source_map(code) { + var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code); + if (!match) { + exports.AST_Node.warn("inline source map not found"); + return null; + } + return JSON.parse(new Buffer(match[2], "base64")); +} + exports.minify = function(files, options, name) { - options = defaults(options, { - spidermonkey : false, - outSourceMap : null, - sourceRoot : null, - inSourceMap : null, - sourceMapUrl : null, + options = exports.defaults(options, { + compress : {}, fromString : false, - warnings : false, + inSourceMap : null, mangle : {}, mangleProperties : false, nameCache : null, + outFileName : null, output : null, - compress : {}, - parse : {} + outSourceMap : null, + parse : {}, + sourceMapInline : false, + sourceMapUrl : null, + sourceRoot : null, + spidermonkey : false, + warnings : false, }); - base54.reset(); + exports.base54.reset(); + + var inMap = options.inSourceMap; + if (typeof inMap == "string" && inMap != "inline") { + inMap = JSON.parse(rjsFile.readFile(inMap, "utf8")); + } // 1. parse var toplevel = null, sourcesContent = {}; if (options.spidermonkey) { - toplevel = AST_Node.from_mozilla_ast(files); + if (inMap == "inline") { + throw new Error("inline source map only works with built-in parser"); + } + toplevel = exports.AST_Node.from_mozilla_ast(files); } else { var addFile = function(file, fileUrl) { var code = options.fromString ? file : rjsFile.readFile(file, "utf8"); + if (inMap == "inline") { + inMap = read_source_map(code); + } sourcesContent[fileUrl] = code; - toplevel = parse(code, { + toplevel = exports.parse(code, { filename: fileUrl, toplevel: toplevel, bare_returns: options.parse ? options.parse.bare_returns : undefined }); } - if (!options.fromString) files = simple_glob(files); + if (!options.fromString) { + files = exports.simple_glob(files); + if (inMap == "inline" && files.length > 1) { + throw new Error("inline source map only works with singular input"); + } + } [].concat(files).forEach(function (files, i) { if (typeof files === 'string') { addFile(files, options.fromString ? i : files); @@ -22383,17 +24753,17 @@ exports.minify = function(files, options, name) { // 2. compress if (options.compress) { var compress = { warnings: options.warnings }; - merge(compress, options.compress); - toplevel.figure_out_scope(); - var sq = Compressor(compress); + exports.merge(compress, options.compress); + toplevel.figure_out_scope(options.mangle); + var sq = exports.Compressor(compress); toplevel = sq.compress(toplevel); } // 3. mangle properties if (options.mangleProperties || options.nameCache) { - options.mangleProperties.cache = readNameCache(options.nameCache, "props"); - toplevel = mangle_properties(toplevel, options.mangleProperties); - writeNameCache(options.nameCache, "props", options.mangleProperties.cache); + options.mangleProperties.cache = exports.readNameCache(options.nameCache, "props"); + toplevel = exports.mangle_properties(toplevel, options.mangleProperties); + exports.writeNameCache(options.nameCache, "props", options.mangleProperties.cache); } // 4. mangle @@ -22404,14 +24774,11 @@ exports.minify = function(files, options, name) { } // 5. output - var inMap = options.inSourceMap; - var output = {}; - if (typeof options.inSourceMap == "string") { - inMap = JSON.parse(rjsFile.readFile(options.inSourceMap, "utf8")); - } - if (options.outSourceMap) { - output.source_map = SourceMap({ - file: options.outSourceMap, + var output = { max_line_len: 32000 }; + if (options.outSourceMap || options.sourceMapInline) { + output.source_map = exports.SourceMap({ + // prefer outFileName, otherwise use outSourceMap without .map suffix + file: options.outFileName || (typeof options.outSourceMap === 'string' ? options.outSourceMap.replace(/\.map$/i, '') : null), orig: inMap, root: options.sourceRoot }); @@ -22425,21 +24792,24 @@ exports.minify = function(files, options, name) { } if (options.output) { - merge(output, options.output); + exports.merge(output, options.output); } - var stream = OutputStream(output); + var stream = exports.OutputStream(output); toplevel.print(stream); - var mappingUrlPrefix = "\n//# sourceMappingURL="; - if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) { - stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap); - } var source_map = output.source_map; if (source_map) { source_map = source_map + ""; } + var mappingUrlPrefix = "\n//# sourceMappingURL="; + if (options.sourceMapInline) { + stream += mappingUrlPrefix + "data:application/json;charset=utf-8;base64," + new Buffer(source_map).toString("base64"); + } else if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) { + stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap); + } + return { code : stream + "", map : source_map @@ -22457,11 +24827,11 @@ exports.minify = function(files, options, name) { // if (ctor.SUBCLASSES.length > 0) ret.sub = sub; // return ret; // } -// return doitem(AST_Node).sub; +// return doitem(exports.AST_Node).sub; // } exports.describe_ast = function() { - var out = OutputStream({ beautify: true }); + var out = exports.OutputStream({ beautify: true }); function doitem(ctor) { out.print("AST_" + ctor.TYPE); var props = ctor.SELF_PROPS.filter(function(prop){ @@ -22491,10 +24861,102 @@ exports.describe_ast = function() { }); } }; - doitem(AST_Node); + doitem(exports.AST_Node); return out + ""; }; +function readReservedFile(filename, reserved) { + if (!reserved) { + reserved = { vars: [], props: [] }; + } + var data = rjsFile.readFile(filename, "utf8"); + data = JSON.parse(data); + if (data.vars) { + data.vars.forEach(function(name){ + exports.push_uniq(reserved.vars, name); + }); + } + if (data.props) { + data.props.forEach(function(name){ + exports.push_uniq(reserved.props, name); + }); + } + return reserved; +} + +exports.readReservedFile = readReservedFile; + +exports.readDefaultReservedFile = function(reserved) { + return readReservedFile(require.resolve("./domprops.json"), reserved); +}; + +exports.readNameCache = function(filename, key) { + var cache = null; + if (filename) { + try { + var cache = rjsFile.readFile(filename, "utf8"); + cache = JSON.parse(cache)[key]; + if (!cache) throw "init"; + cache.props = exports.Dictionary.fromObject(cache.props); + } catch(ex) { + cache = { + cname: -1, + props: new exports.Dictionary() + }; + } + } + return cache; +}; + +exports.writeNameCache = function(filename, key, cache) { + if (filename) { + var data; + try { + data = rjsFile.readFile(filename, "utf8"); + data = JSON.parse(data); + } catch(ex) { + data = {}; + } + data[key] = { + cname: cache.cname, + props: cache.props.toObject() + }; + rjsFile.writeFile(filename, JSON.stringify(data, null, 2), "utf8"); + } +}; + +// A file glob function that only supports "*" and "?" wildcards in the basename. +// Example: "foo/bar/*baz??.*.js" +// Argument `glob` may be a string or an array of strings. +// Returns an array of strings. Garbage in, garbage out. +exports.simple_glob = function simple_glob(glob) { + if (Array.isArray(glob)) { + return [].concat.apply([], glob.map(simple_glob)); + } + if (glob.match(/\*|\?/)) { + var dir = path.dirname(glob); + try { + var entries = fs.readdirSync(dir); + } catch (ex) {} + if (entries) { + var pattern = "^" + path.basename(glob) + .replace(/[.+^$[\]\\(){}]/g, "\\$&") + .replace(/\*/g, "[^/\\\\]*") + .replace(/\?/g, "[^/\\\\]") + "$"; + var mod = process.platform === "win32" ? "i" : ""; + var rx = new RegExp(pattern, mod); + var results = entries.filter(function(name) { + return rx.test(name); + }).map(function(name) { + return path.join(dir, name); + }); + if (results.length) return results; + } + } + return [ glob ]; +}; + + }); /*jslint plusplus: true */ /*global define: false */ @@ -24502,7 +26964,8 @@ function (lang, logger, envOptimize, file, parse, cssUrlRegExp = /\url\(\s*([^\)]+)\s*\)?/g, protocolRegExp = /^\w+:/, SourceMapGenerator = sourceMap.SourceMapGenerator, - SourceMapConsumer =sourceMap.SourceMapConsumer; + SourceMapConsumer = sourceMap.SourceMapConsumer, + es5PlusGuidance = 'If the source uses ES2015 or later syntax, please pass "optimize: \'none\'" to r.js and use an ES2015+ compatible minifier after running r.js. The included UglifyJS only understands ES5 or earlier syntax.'; /** * If an URL from a CSS url value contains start/end quotes, remove them. @@ -24898,7 +27361,6 @@ function (lang, logger, envOptimize, file, parse, var result, existingMap, resultMap, finalMap, sourceIndex, uconfig = {}, existingMapPath = outFileName + '.map', - preamble = config.preamble || "", baseName = fileName && fileName.split('/').pop(); config = config || {}; @@ -24946,9 +27408,13 @@ function (lang, logger, envOptimize, file, parse, fileContents = result.code; } } catch (e) { - throw new Error('Cannot uglify file: ' + fileName + '. Skipping it. Error is:\n' + e.toString()); + var errorString = e.toString(); + var isSyntaxError = /SyntaxError/.test(errorString); + throw new Error('Cannot uglify file: ' + fileName + + '. Skipping it. Error is:\n' + errorString + + (isSyntaxError ? '\n\n' + es5PlusGuidance : '')); } - return preamble + fileContents; + return fileContents; } } }; @@ -25327,7 +27793,8 @@ define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'c lang.each(depMaps, lang.bind(this, function (depMap) { if (typeof depMap === 'string') { depMap = context.makeModuleMap(depMap, - (this.map.isDefine ? this.map : this.map.parentMap)); + (this.map.isDefine ? this.map : this.map.parentMap), + false, true); } if (!context.fullExec[depMap.id]) { @@ -26439,7 +28906,8 @@ define('build', function (require) { uglify2: true, closure: true, map: true, - throwWhen: true + throwWhen: true, + rawText: true }; build.hasDotPropMatch = function (prop) { @@ -26918,8 +29386,7 @@ define('build', function (require) { var out = new java.io.PrintStream(java.lang.System.out, true, 'UTF-8'); out.println(content); } else if (e === 'node') { - process.stdout.setEncoding('utf8'); - process.stdout.write(content); + process.stdout.write(content, 'utf8'); } else { console.log(content); } @@ -27555,7 +30022,11 @@ define('build', function (require) { singleContents = config.onBuildWrite(moduleName, path, singleContents); } }; - builder.write(parts.prefix, parts.name, writeApi); + + builder.write(parts.prefix, parts.name, writeApi, { + name: module.onCompleteData.name, + path: module.onCompleteData.path + }); } return; } else { @@ -27917,7 +30388,7 @@ function (args, quit, logger, build) { } else if (commandOption === 'v') { console.log('r.js: ' + version + ', RequireJS: ' + this.requirejsVars.require.version + - ', UglifyJS: 2.7.3'); + ', UglifyJS: 2.8.29'); } else if (commandOption === 'convert') { loadLib(); diff --git a/www/js/lib/require.js b/www/js/lib/require.js index 4db1424..78490f9 100644 --- a/www/js/lib/require.js +++ b/www/js/lib/require.js @@ -1,5 +1,5 @@ /** vim: et:ts=4:sw=4:sts=4 - * @license RequireJS 2.3.2 Copyright jQuery Foundation and other contributors. + * @license RequireJS 2.3.6 Copyright jQuery Foundation and other contributors. * Released under MIT license, https://github.com/requirejs/requirejs/blob/master/LICENSE */ //Not using strict: uneven strict support in browsers, #392, and causes @@ -11,7 +11,7 @@ var requirejs, require, define; (function (global, setTimeout) { var req, s, head, baseElement, dataMain, src, interactiveScript, currentlyAddingScript, mainScript, subPath, - version = '2.3.2', + version = '2.3.6', commentRegExp = /\/\*[\s\S]*?\*\/|([^:"'=]|^)\/\/.*$/mg, cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g, jsSuffixRegExp = /\.js$/, @@ -165,7 +165,7 @@ var requirejs, require, define; * @returns {Error} */ function makeError(id, msg, err, requireModules) { - var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id); + var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id); e.requireType = id; e.requireModules = requireModules; if (err) { @@ -440,7 +440,9 @@ var requirejs, require, define; //Account for relative paths if there is a base name. if (name) { if (prefix) { - if (pluginModule && pluginModule.normalize) { + if (isNormalized) { + normalizedName = name; + } else if (pluginModule && pluginModule.normalize) { //Plugin is loaded, use its normalize method. normalizedName = pluginModule.normalize(name, function (name) { return normalize(name, parentName, applyMap); @@ -972,7 +974,8 @@ var requirejs, require, define; //prefix and name should already be normalized, no need //for applying map config again either. normalizedMap = makeModuleMap(map.prefix + '!' + name, - this.map.parentMap); + this.map.parentMap, + true); on(normalizedMap, 'defined', bind(this, function (value) { this.map.normalizedMap = normalizedMap;