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Gary Chambers committed 24b706e

Updated Blanket.js test coverage tool

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Files changed (1)

lib/blanket-0.9.4a.js

-/*---------------------------------*/
-/*                                 */
- /*---------------------------------*/
-  /* Blanket.js                      */
-   /* version 0.9.5 alpha             */
-  /* See README.md for revision news */
- /*---------------------------------*/
-  /*                                */
-  /*-------------------------------*/
-
-/* Stop autorunning of tests */
-if (typeof QUnit !== 'undefined'){ QUnit.config.autostart = false; }
-
-/* Esprima Code */
-/*
-  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
-  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
-  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
-  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
-  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
-  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
-  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
-
-  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 <COPYRIGHT HOLDER> 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.
-*/
-
-/*jslint bitwise:true plusplus:true */
-/*global esprima:true, define:true, exports:true, window: true,
-throwError: true, generateStatement: true, peek: true,
-parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
-parseFunctionDeclaration: true, parseFunctionExpression: true,
-parseFunctionSourceElements: true, parseVariableIdentifier: true,
-parseLeftHandSideExpression: true,
-parseStatement: true, parseSourceElement: true */
-
-(function (exports) {
-    'use strict';
-
-    var Token,
-        TokenName,
-        Syntax,
-        PropertyKind,
-        Messages,
-        Regex,
-        SyntaxTreeDelegate,
-        source,
-        strict,
-        index,
-        lineNumber,
-        lineStart,
-        length,
-        delegate,
-        lookahead,
-        state,
-        extra;
-
-    Token = {
-        BooleanLiteral: 1,
-        EOF: 2,
-        Identifier: 3,
-        Keyword: 4,
-        NullLiteral: 5,
-        NumericLiteral: 6,
-        Punctuator: 7,
-        StringLiteral: 8
-    };
-
-    TokenName = {};
-    TokenName[Token.BooleanLiteral] = 'Boolean';
-    TokenName[Token.EOF] = '<end>';
-    TokenName[Token.Identifier] = 'Identifier';
-    TokenName[Token.Keyword] = 'Keyword';
-    TokenName[Token.NullLiteral] = 'Null';
-    TokenName[Token.NumericLiteral] = 'Numeric';
-    TokenName[Token.Punctuator] = 'Punctuator';
-    TokenName[Token.StringLiteral] = 'String';
-
-    Syntax = {
-        AssignmentExpression: 'AssignmentExpression',
-        ArrayExpression: 'ArrayExpression',
-        BlockStatement: 'BlockStatement',
-        BinaryExpression: 'BinaryExpression',
-        BreakStatement: 'BreakStatement',
-        CallExpression: 'CallExpression',
-        CatchClause: 'CatchClause',
-        ConditionalExpression: 'ConditionalExpression',
-        ContinueStatement: 'ContinueStatement',
-        DoWhileStatement: 'DoWhileStatement',
-        DebuggerStatement: 'DebuggerStatement',
-        EmptyStatement: 'EmptyStatement',
-        ExpressionStatement: 'ExpressionStatement',
-        ForStatement: 'ForStatement',
-        ForInStatement: 'ForInStatement',
-        FunctionDeclaration: 'FunctionDeclaration',
-        FunctionExpression: 'FunctionExpression',
-        Identifier: 'Identifier',
-        IfStatement: 'IfStatement',
-        Literal: 'Literal',
-        LabeledStatement: 'LabeledStatement',
-        LogicalExpression: 'LogicalExpression',
-        MemberExpression: 'MemberExpression',
-        NewExpression: 'NewExpression',
-        ObjectExpression: 'ObjectExpression',
-        Program: 'Program',
-        Property: 'Property',
-        ReturnStatement: 'ReturnStatement',
-        SequenceExpression: 'SequenceExpression',
-        SwitchStatement: 'SwitchStatement',
-        SwitchCase: 'SwitchCase',
-        ThisExpression: 'ThisExpression',
-        ThrowStatement: 'ThrowStatement',
-        TryStatement: 'TryStatement',
-        UnaryExpression: 'UnaryExpression',
-        UpdateExpression: 'UpdateExpression',
-        VariableDeclaration: 'VariableDeclaration',
-        VariableDeclarator: 'VariableDeclarator',
-        WhileStatement: 'WhileStatement',
-        WithStatement: 'WithStatement'
-    };
-
-    PropertyKind = {
-        Data: 1,
-        Get: 2,
-        Set: 4
-    };
-
-    // 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',
-        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',
-        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.',
-        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
-        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
-        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
-        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'
-    };
-
-    // See also tools/generate-unicode-regex.py.
-    Regex = {
-        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
-        NonAsciiIdentifierPart: new 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-    };
-
-    // 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.
-
-    function assert(condition, message) {
-        if (!condition) {
-            throw new Error('ASSERT: ' + message);
-        }
-    }
-
-    function sliceSource(from, to) {
-        return source.slice(from, to);
-    }
-
-    if (typeof 'esprima'[0] === 'undefined') {
-        sliceSource = function sliceArraySource(from, to) {
-            return source.slice(from, to).join('');
-        };
-    }
-
-    function isDecimalDigit(ch) {
-        return '0123456789'.indexOf(ch) >= 0;
-    }
-
-    function isHexDigit(ch) {
-        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
-    }
-
-    function isOctalDigit(ch) {
-        return '01234567'.indexOf(ch) >= 0;
-    }
-
-
-    // 7.2 White Space
-
-    function isWhiteSpace(ch) {
-        return (ch === ' ') || (ch === '\u0009') || (ch === '\u000B') ||
-            (ch === '\u000C') || (ch === '\u00A0') ||
-            (ch.charCodeAt(0) >= 0x1680 &&
-             '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(ch) >= 0);
-    }
-
-    // 7.3 Line Terminators
-
-    function isLineTerminator(ch) {
-        return (ch === '\n' || ch === '\r' || ch === '\u2028' || ch === '\u2029');
-    }
-
-    // 7.6 Identifier Names and Identifiers
-
-    function isIdentifierStart(ch) {
-        return (ch === '$') || (ch === '_') || (ch === '\\') ||
-            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
-            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierStart.test(ch));
-    }
-
-    function isIdentifierPart(ch) {
-        return (ch === '$') || (ch === '_') || (ch === '\\') ||
-            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
-            ((ch >= '0') && (ch <= '9')) ||
-            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierPart.test(ch));
-    }
-
-    // 7.6.1.2 Future Reserved Words
-
-    function isFutureReservedWord(id) {
-        return ['class', 'enum', 'export', 'extends', 'import', 'super'].
-            indexOf(id) >= 0;
-    }
-
-    function isStrictModeReservedWord(id) {
-        return ['implements', 'interface', 'package', 'private', 'protected',
-            'public', 'static', 'yield', 'let'].indexOf(id) >= 0;
-    }
-
-    function isRestrictedWord(id) {
-        return id === 'eval' || id === 'arguments';
-    }
-
-    // 7.6.1.1 Keywords
-
-    function isKeyword(id) {
-        if (strict && isStrictModeReservedWord(id)) {
-            return true;
-        }
-
-        // 'const' is specialized as Keyword in V8.
-        // 'yield' and 'let' are for compatiblity with SpiderMonkey and ES.next.
-        // Some others are from future reserved words.
-
-        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;
-        }
-    }
-
-    // 7.4 Comments
-
-    function skipComment() {
-        var ch, blockComment, lineComment;
-
-        blockComment = false;
-        lineComment = false;
-
-        while (index < length) {
-            ch = source[index];
-
-            if (lineComment) {
-                ch = source[index++];
-                if (isLineTerminator(ch)) {
-                    lineComment = false;
-                    if (ch === '\r' && source[index] === '\n') {
-                        ++index;
-                    }
-                    ++lineNumber;
-                    lineStart = index;
-                }
-            } else if (blockComment) {
-                if (isLineTerminator(ch)) {
-                    if (ch === '\r' && source[index + 1] === '\n') {
-                        ++index;
-                    }
-                    ++lineNumber;
-                    ++index;
-                    lineStart = index;
-                    if (index >= length) {
-                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                    }
-                } else {
-                    ch = source[index++];
-                    if (index >= length) {
-                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                    }
-                    if (ch === '*') {
-                        ch = source[index];
-                        if (ch === '/') {
-                            ++index;
-                            blockComment = false;
-                        }
-                    }
-                }
-            } else if (ch === '/') {
-                ch = source[index + 1];
-                if (ch === '/') {
-                    index += 2;
-                    lineComment = true;
-                } else if (ch === '*') {
-                    index += 2;
-                    blockComment = true;
-                    if (index >= length) {
-                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                    }
-                } else {
-                    break;
-                }
-            } else if (isWhiteSpace(ch)) {
-                ++index;
-            } else if (isLineTerminator(ch)) {
-                ++index;
-                if (ch ===  '\r' && source[index] === '\n') {
-                    ++index;
-                }
-                ++lineNumber;
-                lineStart = index;
-            } 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 getEscapedIdentifier() {
-        var ch, id, restore, type;
-
-        ch = id = source[index++];
-        if (ch === '\\') {
-            if (source[index] !== 'u') {
-                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-            }
-            ++index;
-            restore = index;
-            ch = scanHexEscape('u');
-            if (ch) {
-                if (ch === '\\' || !isIdentifierStart(ch)) {
-                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                }
-                id = ch;
-            } else {
-                index = restore;
-                id = 'u';
-            }
-        }
-
-        while (index < length) {
-            ch = source[index];
-            if (!isIdentifierPart(ch)) {
-                break;
-            }
-            ++index;
-            id += ch;
-            if (ch === '\\') {
-                id = id.substr(0, id.length - 1);
-                if (source[index] !== 'u') {
-                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                }
-                ++index;
-                restore = index;
-                ch = scanHexEscape('u');
-                if (ch) {
-                    if (ch === '\\' || !isIdentifierPart(ch)) {
-                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                    }
-                    id += ch;
-                } else {
-                    index = restore;
-                    id += 'u';
-                }
-            }
-        }
-
-        return id;
-    }
-
-    function getIdentifier() {
-        var start, ch;
-
-        start = index++;
-        while (index < length) {
-            ch = source[index];
-            if (ch === '\\') {
-                index = start;
-                return getEscapedIdentifier();
-            }
-            if (isIdentifierPart(ch)) {
-                ++index;
-            } else {
-                break;
-            }
-        }
-
-        return sliceSource(start, index);
-    }
-
-    function scanIdentifier() {
-        var start, id, type;
-
-        start = index;
-        if (!isIdentifierStart(source[index])) {
-            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-        }
-
-        id = (source[index] === '\\') ? getEscapedIdentifier() : 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,
-            range: [start, index]
-        };
-    }
-
-
-    // 7.7 Punctuators
-
-    function scanPunctuator() {
-        var start = index,
-            ch1 = source[index],
-            ch2,
-            ch3,
-            ch4;
-
-        // Check for most common single-character punctuators.
-
-        if (ch1 === '.' || ch1 === '(' || ch1 === ')' || ch1 === ';' || ch1 === ',' ||
-                ch1 === '{' || ch1 === '}' || ch1 === '[' || ch1 === ']' ||
-                ch1 === ':' || ch1 === '?' || ch1 === '~') {
-            ++index;
-            return {
-                type: Token.Punctuator,
-                value: ch1,
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        // Peek more characters.
-
-        ch2 = source[index + 1];
-        ch3 = source[index + 2];
-        ch4 = source[index + 3];
-
-        // 4-character punctuator: >>>=
-
-        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
-            if (ch4 === '=') {
-                index += 4;
-                return {
-                    type: Token.Punctuator,
-                    value: '>>>=',
-                    lineNumber: lineNumber,
-                    lineStart: lineStart,
-                    range: [start, index]
-                };
-            }
-        }
-
-        // 3-character punctuators: === !== >>> <<= >>=
-
-        if (ch1 === '=' && ch2 === '=' && ch3 === '=') {
-            index += 3;
-            return {
-                type: Token.Punctuator,
-                value: '===',
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        if (ch1 === '!' && ch2 === '=' && ch3 === '=') {
-            index += 3;
-            return {
-                type: Token.Punctuator,
-                value: '!==',
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
-            index += 3;
-            return {
-                type: Token.Punctuator,
-                value: '>>>',
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
-            index += 3;
-            return {
-                type: Token.Punctuator,
-                value: '<<=',
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
-            index += 3;
-            return {
-                type: Token.Punctuator,
-                value: '>>=',
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        // 2-character punctuators: <= >= == != ++ -- << >> && ||
-        // += -= *= %= &= |= ^= /=
-
-        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
-            if ('+-<>&|'.indexOf(ch2) >= 0) {
-                index += 2;
-                return {
-                    type: Token.Punctuator,
-                    value: ch1 + ch2,
-                    lineNumber: lineNumber,
-                    lineStart: lineStart,
-                    range: [start, index]
-                };
-            }
-        }
-
-        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
-            ++index;
-            if (ch2 === '=') {
-                ++index;
-                ch1 += ch2;
-            }
-            return {
-                type: Token.Punctuator,
-                value: ch1,
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [start, index]
-            };
-        }
-
-        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-    }
-
-    // 7.8.3 Numeric Literals
-
-    function scanNumericLiteral() {
-        var number, start, ch;
-
-        ch = source[index];
-        assert(isDecimalDigit(ch) || (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'.
-            if (number === '0') {
-                if (ch === 'x' || ch === 'X') {
-                    number += source[index++];
-                    while (index < length) {
-                        ch = source[index];
-                        if (!isHexDigit(ch)) {
-                            break;
-                        }
-                        number += source[index++];
-                    }
-
-                    if (number.length <= 2) {
-                        // only 0x
-                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                    }
-
-                    if (index < length) {
-                        ch = source[index];
-                        if (isIdentifierStart(ch)) {
-                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                        }
-                    }
-                    return {
-                        type: Token.NumericLiteral,
-                        value: parseInt(number, 16),
-                        lineNumber: lineNumber,
-                        lineStart: lineStart,
-                        range: [start, index]
-                    };
-                }
-                if (isOctalDigit(ch)) {
-                    number += source[index++];
-                    while (index < length) {
-                        ch = source[index];
-                        if (!isOctalDigit(ch)) {
-                            break;
-                        }
-                        number += source[index++];
-                    }
-
-                    if (index < length) {
-                        ch = source[index];
-                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
-                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                        }
-                    }
-                    return {
-                        type: Token.NumericLiteral,
-                        value: parseInt(number, 8),
-                        octal: true,
-                        lineNumber: lineNumber,
-                        lineStart: lineStart,
-                        range: [start, index]
-                    };
-                }
-
-                // decimal number starts with '0' such as '09' is illegal.
-                if (isDecimalDigit(ch)) {
-                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-                }
-            }
-
-            while (index < length) {
-                ch = source[index];
-                if (!isDecimalDigit(ch)) {
-                    break;
-                }
-                number += source[index++];
-            }
-        }
-
-        if (ch === '.') {
-            number += source[index++];
-            while (index < length) {
-                ch = source[index];
-                if (!isDecimalDigit(ch)) {
-                    break;
-                }
-                number += source[index++];
-            }
-        }
-
-        if (ch === 'e' || ch === 'E') {
-            number += source[index++];
-
-            ch = source[index];
-            if (ch === '+' || ch === '-') {
-                number += source[index++];
-            }
-
-            ch = source[index];
-            if (isDecimalDigit(ch)) {
-                number += source[index++];
-                while (index < length) {
-                    ch = source[index];
-                    if (!isDecimalDigit(ch)) {
-                        break;
-                    }
-                    number += source[index++];
-                }
-            } else {
-                ch = 'character ' + ch;
-                if (index >= length) {
-                    ch = '<end>';
-                }
-                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-            }
-        }
-
-        if (index < length) {
-            ch = source[index];
-            if (isIdentifierStart(ch)) {
-                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-            }
-        }
-
-        return {
-            type: Token.NumericLiteral,
-            value: parseFloat(number),
-            lineNumber: lineNumber,
-            lineStart: lineStart,
-            range: [start, index]
-        };
-    }
-
-    // 7.8.4 String Literals
-
-    function scanStringLiteral() {
-        var str = '', quote, start, ch, code, unescaped, restore, 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 (!isLineTerminator(ch)) {
-                    switch (ch) {
-                    case 'n':
-                        str += '\n';
-                        break;
-                    case 'r':
-                        str += '\r';
-                        break;
-                    case 't':
-                        str += '\t';
-                        break;
-                    case 'u':
-                    case 'x':
-                        restore = index;
-                        unescaped = scanHexEscape(ch);
-                        if (unescaped) {
-                            str += unescaped;
-                        } else {
-                            index = restore;
-                            str += ch;
-                        }
-                        break;
-                    case 'b':
-                        str += '\b';
-                        break;
-                    case 'f':
-                        str += '\f';
-                        break;
-                    case 'v':
-                        str += '\v';
-                        break;
-
-                    default:
-                        if (isOctalDigit(ch)) {
-                            code = '01234567'.indexOf(ch);
-
-                            // \0 is not octal escape sequence
-                            if (code !== 0) {
-                                octal = true;
-                            }
-
-                            if (index < length && isOctalDigit(source[index])) {
-                                octal = true;
-                                code = code * 8 + '01234567'.indexOf(source[index++]);
-
-                                // 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++]);
-                                }
-                            }
-                            str += String.fromCharCode(code);
-                        } else {
-                            str += ch;
-                        }
-                        break;
-                    }
-                } else {
-                    ++lineNumber;
-                    if (ch ===  '\r' && source[index] === '\n') {
-                        ++index;
-                    }
-                }
-            } else if (isLineTerminator(ch)) {
-                break;
-            } else {
-                str += ch;
-            }
-        }
-
-        if (quote !== '') {
-            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
-        }
-
-        return {
-            type: Token.StringLiteral,
-            value: str,
-            octal: octal,
-            lineNumber: lineNumber,
-            lineStart: lineStart,
-            range: [start, index]
-        };
-    }
-
-    function scanRegExp() {
-        var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false;
-
-        lookahead = null;
-        skipComment();
-
-        start = index;
-        ch = source[index];
-        assert(ch === '/', 'Regular expression literal must start with a slash');
-        str = source[index++];
-
-        while (index < length) {
-            ch = source[index++];
-            str += ch;
-            if (classMarker) {
-                if (ch === ']') {
-                    classMarker = false;
-                }
-            } else {
-                if (ch === '\\') {
-                    ch = source[index++];
-                    // ECMA-262 7.8.5
-                    if (isLineTerminator(ch)) {
-                        throwError({}, Messages.UnterminatedRegExp);
-                    }
-                    str += ch;
-                } else if (ch === '/') {
-                    terminated = true;
-                    break;
-                } else if (ch === '[') {
-                    classMarker = true;
-                } else if (isLineTerminator(ch)) {
-                    throwError({}, Messages.UnterminatedRegExp);
-                }
-            }
-        }
-
-        if (!terminated) {
-            throwError({}, Messages.UnterminatedRegExp);
-        }
-
-        // Exclude leading and trailing slash.
-        pattern = str.substr(1, str.length - 2);
-
-        flags = '';
-        while (index < length) {
-            ch = source[index];
-            if (!isIdentifierPart(ch)) {
-                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';
-                    }
-                } else {
-                    str += '\\';
-                }
-            } else {
-                flags += ch;
-                str += ch;
-            }
-        }
-
-        try {
-            value = new RegExp(pattern, flags);
-        } catch (e) {
-            throwError({}, Messages.InvalidRegExp);
-        }
-
-        peek();
-
-        return {
-            literal: str,
-            value: value,
-            range: [start, index]
-        };
-    }
-
-    function isIdentifierName(token) {
-        return token.type === Token.Identifier ||
-            token.type === Token.Keyword ||
-            token.type === Token.BooleanLiteral ||
-            token.type === Token.NullLiteral;
-    }
-
-    function advance() {
-        var ch;
-
-        skipComment();
-
-        if (index >= length) {
-            return {
-                type: Token.EOF,
-                lineNumber: lineNumber,
-                lineStart: lineStart,
-                range: [index, index]
-            };
-        }
-
-        ch = source[index];
-
-        if (isIdentifierStart(ch)) {
-            return scanIdentifier();
-        }
-        if (ch === '.') {
-            // Dot (.) can also start a floating-point number, hence the need
-            // to check the next character.
-            if (isDecimalDigit(source[index + 1])) {
-                return scanNumericLiteral();
-            }
-            return scanPunctuator();
-        }
-        if (ch === '\'' || ch === '"') {
-            return scanStringLiteral();
-        }
-        if (isDecimalDigit(ch)) {
-            return scanNumericLiteral();
-        }
-
-        return scanPunctuator();
-    }
-
-    function lex() {
-        var token;
-
-        token = lookahead;
-        index = token.range[1];
-        lineNumber = token.lineNumber;
-        lineStart = token.lineStart;
-
-        lookahead = advance();
-
-        index = token.range[1];
-        lineNumber = token.lineNumber;
-        lineStart = token.lineStart;
-
-        return token;
-    }
-
-    function peek() {
-        var pos, line, start;
-
-        pos = index;
-        line = lineNumber;
-        start = lineStart;
-        lookahead = advance();
-        index = pos;
-        lineNumber = line;
-        lineStart = start;
-    }
-
-    SyntaxTreeDelegate = {
-
-        name: 'SyntaxTree',
-
-        createArrayExpression: function (elements) {
-            return {
-                type: Syntax.ArrayExpression,
-                elements: elements
-            };
-        },
-
-        createAssignmentExpression: function (operator, left, right) {
-            return {
-                type: Syntax.AssignmentExpression,
-                operator: operator,
-                left: left,
-                right: right
-            };
-        },
-
-        createBinaryExpression: function (operator, left, right) {
-            return {
-                type: Syntax.BinaryExpression,
-                operator: operator,
-                left: left,
-                right: right
-            };
-        },
-
-        createBlockStatement: function (body) {
-            return {
-                type: Syntax.BlockStatement,
-                body: body
-            };
-        },
-
-        createBreakStatement: function (label) {
-            return {
-                type: Syntax.BreakStatement,
-                label: label
-            };
-        },
-
-        createCallExpression: function (callee, args) {
-            return {
-                type: Syntax.CallExpression,
-                callee: callee,
-                'arguments': args
-            };
-        },
-
-        createCatchClause: function (param, body) {
-            return {
-                type: Syntax.CatchClause,
-                param: param,
-                body: body
-            };
-        },
-
-        createConditionalExpression: function (test, consequent, alternate) {
-            return {
-                type: Syntax.ConditionalExpression,
-                test: test,
-                consequent: consequent,
-                alternate: alternate
-            };
-        },
-
-        createContinueStatement: function (label) {
-            return {
-                type: Syntax.ContinueStatement,
-                label: label
-            };
-        },
-
-        createDebuggerStatement: function () {
-            return {
-                type: Syntax.DebuggerStatement
-            };
-        },
-
-        createDoWhileStatement: function (body, test) {
-            return {
-                type: Syntax.DoWhileStatement,
-                body: body,
-                test: test
-            };
-        },
-
-        createEmptyStatement: function () {
-            return {
-                type: Syntax.EmptyStatement
-            };
-        },
-
-        createExpressionStatement: function (expression) {
-            return {
-                type: Syntax.ExpressionStatement,
-                expression: expression
-            };
-        },
-
-        createForStatement: function (init, test, update, body) {
-            return {
-                type: Syntax.ForStatement,
-                init: init,
-                test: test,
-                update: update,
-                body: body
-            };
-        },
-
-        createForInStatement: function (left, right, body) {
-            return {
-                type: Syntax.ForInStatement,
-                left: left,
-                right: right,
-                body: body,
-                each: false
-            };
-        },
-
-        createFunctionDeclaration: function (id, params, defaults, body) {
-            return {
-                type: Syntax.FunctionDeclaration,
-                id: id,
-                params: params,
-                defaults: defaults,
-                body: body,
-                rest: null,
-                generator: false,
-                expression: false
-            };
-        },
-
-        createFunctionExpression: function (id, params, defaults, body) {
-            return {
-                type: Syntax.FunctionExpression,
-                id: id,
-                params: params,
-                defaults: defaults,
-                body: body,
-                rest: null,
-                generator: false,
-                expression: false
-            };
-        },
-
-        createIdentifier: function (name) {
-            return {
-                type: Syntax.Identifier,
-                name: name
-            };
-        },
-
-        createIfStatement: function (test, consequent, alternate) {
-            return {
-                type: Syntax.IfStatement,
-                test: test,
-                consequent: consequent,
-                alternate: alternate
-            };
-        },
-
-        createLabeledStatement: function (label, body) {
-            return {
-                type: Syntax.LabeledStatement,
-                label: label,
-                body: body
-            };
-        },
-
-        createLiteral: function (token) {
-            return {
-                type: Syntax.Literal,
-                value: token.value,
-                raw: sliceSource(token.range[0], token.range[1])
-            };
-        },
-
-        createLogicalExpression: function (operator, left, right) {
-            return {
-                type: Syntax.LogicalExpression,
-                operator: operator,
-                left: left,
-                right: right
-            };
-        },
-
-        createMemberExpression: function (accessor, object, property) {
-            return {
-                type: Syntax.MemberExpression,
-                computed: accessor === '[',
-                object: object,
-                property: property
-            };
-        },
-
-        createNewExpression: function (callee, args) {
-            return {
-                type: Syntax.NewExpression,
-                callee: callee,
-                'arguments': args
-            };
-        },
-
-        createObjectExpression: function (properties) {
-            return {
-                type: Syntax.ObjectExpression,
-                properties: properties
-            };
-        },
-
-        createPostfixExpression: function (operator, argument) {
-            return {
-                type: Syntax.UpdateExpression,
-                operator: operator,
-                argument: argument,
-                prefix: false
-            };
-        },
-
-        createProgram: function (body) {
-            return {
-                type: Syntax.Program,
-                body: body
-            };
-        },
-
-        createProperty: function (kind, key, value) {
-            return {
-                type: Syntax.Property,
-                key: key,
-                value: value,
-                kind: kind
-            };
-        },
-
-        createReturnStatement: function (argument) {
-            return {
-                type: Syntax.ReturnStatement,
-                argument: argument
-            };
-        },
-
-        createSequenceExpression: function (expressions) {
-            return {
-                type: Syntax.SequenceExpression,
-                expressions: expressions
-            };
-        },
-
-        createSwitchCase: function (test, consequent) {
-            return {
-                type: Syntax.SwitchCase,
-                test: test,
-                consequent: consequent
-            };
-        },
-
-        createSwitchStatement: function (discriminant, cases) {
-            return {
-                type: Syntax.SwitchStatement,
-                discriminant: discriminant,
-                cases: cases
-            };
-        },
-
-        createThisExpression: function () {
-            return {
-                type: Syntax.ThisExpression
-            };
-        },
-
-        createThrowStatement: function (argument) {
-            return {
-                type: Syntax.ThrowStatement,
-                argument: argument
-            };
-        },
-
-        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
-            return {
-                type: Syntax.TryStatement,
-                block: block,
-                guardedHandlers: guardedHandlers,
-                handlers: handlers,
-                finalizer: finalizer
-            };
-        },
-
-        createUnaryExpression: function (operator, argument) {
-            if (operator === '++' || operator === '--') {
-                return {
-                    type: Syntax.UpdateExpression,
-                    operator: operator,
-                    argument: argument,
-                    prefix: true
-                };
-            }
-            return {
-                type: Syntax.UnaryExpression,
-                operator: operator,
-                argument: argument
-            };
-        },
-
-        createVariableDeclaration: function (declarations, kind) {
-            return {
-                type: Syntax.VariableDeclaration,
-                declarations: declarations,
-                kind: kind
-            };
-        },
-
-        createVariableDeclarator: function (id, init) {
-            return {
-                type: Syntax.VariableDeclarator,
-                id: id,
-                init: init
-            };
-        },
-
-        createWhileStatement: function (test, body) {
-            return {
-                type: Syntax.WhileStatement,
-                test: test,
-                body: body
-            };
-        },
-
-        createWithStatement: function (object, body) {
-            return {
-                type: Syntax.WithStatement,
-                object: object,
-                body: body
-            };
-        }
-    };
-
-    // Return true if there is a line terminator before the next token.
-
-    function peekLineTerminator() {
-        var pos, line, start, found;
-
-        pos = index;
-        line = lineNumber;
-        start = lineStart;
-        skipComment();
-        found = lineNumber !== line;
-        index = pos;
-        lineNumber = line;
-        lineStart = start;
-
-        return found;
-    }
-
-    // Throw an exception
-
-    function throwError(token, messageFormat) {
-        var error,
-            args = Array.prototype.slice.call(arguments, 2),
-            msg = messageFormat.replace(
-                /%(\d)/g,
-                function (whole, index) {
-                    return args[index] || '';
-                }
-            );
-
-        if (typeof token.lineNumber === 'number') {
-            error = new Error('Line ' + token.lineNumber + ': ' + msg);
-            error.index = token.range[0];
-            error.lineNumber = token.lineNumber;
-            error.column = token.range[0] - lineStart + 1;
-        } else {
-            error = new Error('Line ' + lineNumber + ': ' + msg);
-            error.index = index;
-            error.lineNumber = lineNumber;
-            error.column = index - lineStart + 1;
-        }
-
-        throw error;
-    }
-
-    function throwErrorTolerant() {
-        try {
-            throwError.apply(null, arguments);
-        } catch (e) {
-            if (extra.errors) {
-                extra.errors.push(e);
-            } else {
-                throw e;
-            }
-        }
-    }
-
-
-    // Throw an exception because of the token.
-
-    function throwUnexpected(token) {
-        if (token.type === Token.EOF) {
-            throwError(token, Messages.UnexpectedEOS);
-        }
-
-        if (token.type === Token.NumericLiteral) {
-            throwError(token, Messages.UnexpectedNumber);
-        }
-
-        if (token.type === Token.StringLiteral) {
-            throwError(token, Messages.UnexpectedString);
-        }
-
-        if (token.type === Token.Identifier) {
-            throwError(token, Messages.UnexpectedIdentifier);
-        }
-
-        if (token.type === Token.Keyword) {
-            if (isFutureReservedWord(token.value)) {
-                throwError(token, Messages.UnexpectedReserved);
-            } else if (strict && isStrictModeReservedWord(token.value)) {
-                throwErrorTolerant(token, Messages.StrictReservedWord);
-                return;
-            }
-            throwError(token, Messages.UnexpectedToken, token.value);
-        }
-
-        // BooleanLiteral, NullLiteral, or Punctuator.
-        throwError(token, Messages.UnexpectedToken, token.value);
-    }
-
-    // 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) {
-            throwUnexpected(token);
-        }
-    }
-
-    // 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) {
-            throwUnexpected(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 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() {
-        var line;
-
-        // Catch the very common case first.
-        if (source[index] === ';') {
-            lex();
-            return;
-        }
-
-        line = lineNumber;
-        skipComment();
-        if (lineNumber !== line) {
-            return;
-        }
-
-        if (match(';')) {
-            lex();
-            return;
-        }
-
-        if (lookahead.type !== Token.EOF && !match('}')) {
-            throwUnexpected(lookahead);
-        }
-    }
-
-    // Return true if provided expression is LeftHandSideExpression
-
-    function isLeftHandSide(expr) {
-        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
-    }
-
-    // 11.1.4 Array Initialiser
-
-    function parseArrayInitialiser() {
-        var elements = [];
-
-        expect('[');
-
-        while (!match(']')) {
-            if (match(',')) {
-                lex();
-                elements.push(null);
-            } else {
-                elements.push(parseAssignmentExpression());
-
-                if (!match(']')) {
-                    expect(',');
-                }
-            }
-        }
-
-        expect(']');
-
-        return delegate.createArrayExpression(elements);
-    }
-
-    // 11.1.5 Object Initialiser
-
-    function parsePropertyFunction(param, first) {
-        var previousStrict, body;
-
-        previousStrict = strict;
-        body = parseFunctionSourceElements();
-        if (first && strict && isRestrictedWord(param[0].name)) {
-            throwErrorTolerant(first, Messages.StrictParamName);
-        }
-        strict = previousStrict;
-        return delegate.createFunctionExpression(null, param, [], body);
-    }
-
-    function parseObjectPropertyKey() {
-        var token = lex();
-
-        // Note: This function is called only from parseObjectProperty(), where
-        // EOF and Punctuator tokens are already filtered out.
-
-        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
-            if (strict && token.octal) {
-                throwErrorTolerant(token, Messages.StrictOctalLiteral);
-            }
-            return delegate.createLiteral(token);
-        }
-
-        return delegate.createIdentifier(token.value);
-    }
-
-    function parseObjectProperty() {
-        var token, key, id, value, param;
-
-        token = lookahead;
-
-        if (token.type === Token.Identifier) {
-
-            id = parseObjectPropertyKey();
-
-            // Property Assignment: Getter and Setter.
-
-            if (token.value === 'get' && !match(':')) {
-                key = parseObjectPropertyKey();
-                expect('(');
-                expect(')');
-                value = parsePropertyFunction([]);
-                return delegate.createProperty('get', key, value);
-            }
-            if (token.value === 'set' && !match(':')) {
-                key = parseObjectPropertyKey();
-                expect('(');
-                token = lookahead;
-                if (token.type !== Token.Identifier) {
-                    throwUnexpected(lex());
-                }
-                param = [ parseVariableIdentifier() ];
-                expect(')');
-                value = parsePropertyFunction(param, token);
-                return delegate.createProperty('set', key, value);
-            }
-            expect(':');
-            value = parseAssignmentExpression();
-            return delegate.createProperty('init', id, value);
-        }
-        if (token.type === Token.EOF || token.type === Token.Punctuator) {
-            throwUnexpected(token);
-        } else {
-            key = parseObjectPropertyKey();
-            expect(':');
-            value = parseAssignmentExpression();
-            return delegate.createProperty('init', key, value);
-        }
-    }
-
-    function parseObjectInitialiser() {
-        var properties = [], property, name, kind, map = {}, toString = String;
-
-        expect('{');
-
-        while (!match('}')) {
-            property = parseObjectProperty();
-
-            if (property.key.type === Syntax.Identifier) {
-                name = property.key.name;
-            } else {
-                name = toString(property.key.value);
-            }
-            kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
-            if (Object.prototype.hasOwnProperty.call(map, name)) {
-                if (map[name] === PropertyKind.Data) {
-                    if (strict && kind === PropertyKind.Data) {
-                        throwErrorTolerant({}, Messages.StrictDuplicateProperty);
-                    } else if (kind !== PropertyKind.Data) {
-                        throwErrorTolerant({}, Messages.AccessorDataProperty);
-                    }
-                } else {
-                    if (kind === PropertyKind.Data) {
-                        throwErrorTolerant({}, Messages.AccessorDataProperty);
-                    } else if (map[name] & kind) {
-                        throwErrorTolerant({}, Messages.AccessorGetSet);
-                    }
-                }
-                map[name] |= kind;
-            } else {
-                map[name] = kind;
-            }
-
-            properties.push(property);
-
-            if (!match('}')) {
-                expect(',');
-            }
-        }
-
-        expect('}');
-
-        return delegate.createObjectExpression(properties);
-    }
-
-    // 11.1.6 The Grouping Operator
-
-    function parseGroupExpression() {
-        var expr;
-
-        expect('(');
-
-        expr = parseExpression();
-
-        expect(')');
-
-        return expr;
-    }
-
-
-    // 11.1 Primary Expressions
-
-    function parsePrimaryExpression() {
-        var type, token;
-
-        type = lookahead.type;
-
-        if (type === Token.Identifier) {
-            return delegate.createIdentifier(lex().value);
-        }
-
-        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
-            if (strict && lookahead.octal) {
-                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
-            }
-            return delegate.createLiteral(lex());
-        }
-
-        if (type === Token.Keyword) {
-            if (matchKeyword('this')) {
-                lex();
-                return delegate.createThisExpression();
-            }
-
-            if (matchKeyword('function')) {
-                return parseFunctionExpression();
-            }
-        }
-
-        if (type === Token.BooleanLiteral) {
-            token = lex();
-            token.value = (token.value === 'true');
-            return delegate.createLiteral(token);
-        }
-
-        if (type === Token.NullLiteral) {
-            token = lex();
-            token.value = null;
-            return delegate.createLiteral(token);
-        }
-
-        if (match('[')) {
-            return parseArrayInitialiser();
-        }
-
-        if (match('{')) {
-            return parseObjectInitialiser();
-        }
-
-        if (match('(')) {
-            return parseGroupExpression();
-        }
-
-        if (match('/') || match('/=')) {
-            return delegate.createLiteral(scanRegExp());
-        }
-
-        return throwUnexpected(lex());
-    }
-
-    // 11.2 Left-Hand-Side Expressions
-
-    function parseArguments() {
-        var args = [];
-
-        expect('(');
-
-        if (!match(')')) {
-            while (index < length) {
-                args.push(parseAssignmentExpression());
-                if (match(')')) {
-                    break;
-                }
-                expect(',');
-            }
-        }
-
-        expect(')');
-
-        return args;
-    }
-
-    function parseNonComputedProperty() {
-        var token = lex();
-
-        if (!isIdentifierName(token)) {
-            throwUnexpected(token);
-        }
-
-        return delegate.createIdentifier(token.value);
-    }
-
-    function parseNonComputedMember() {
-        expect('.');
-
-        return parseNonComputedProperty();
-    }
-
-    function parseComputedMember() {
-        var expr;
-
-        expect('[');
-
-        expr = parseExpression();
-
-        expect(']');
-
-        return expr;
-    }
-
-    function parseNewExpression() {
-        var callee, args;
-
-        expectKeyword('new');
-        callee = parseLeftHandSideExpression();
-        args = match('(') ? parseArguments() : [];
-
-        return delegate.createNewExpression(callee, args);
-    }
-
-    function parseLeftHandSideExpressionAllowCall() {
-        var expr, args, property;
-
-        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
-
-        while (match('.') || match('[') || match('(')) {
-            if (match('(')) {
-                args = parseArguments();
-                expr = delegate.createCallExpression(expr, args);
-            } else if (match('[')) {
-                property = parseComputedMember();
-                expr = delegate.createMemberExpression('[', expr, property);
-            } else {
-                property = parseNonComputedMember();
-                expr = delegate.createMemberExpression('.', expr, property);
-            }
-        }
-
-        return expr;
-    }
-
-
-    function parseLeftHandSideExpression() {
-        var expr, property;
-
-        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
-
-        while (match('.') || match('[')) {
-            if (match('[')) {
-                property = parseComputedMember();
-                expr = delegate.createMemberExpression('[', expr, property);
-            } else {
-                property = parseNonComputedMember();
-                expr = delegate.createMemberExpression('.', expr, property);
-            }
-        }
-
-        return expr;
-    }
-
-    // 11.3 Postfix Expressions
-
-    function parsePostfixExpression() {
-        var expr = parseLeftHandSideExpressionAllowCall(), token;
-
-        if (lookahead.type !== Token.Punctuator) {
-            return expr;
-        }
-
-        if ((match('++') || match('--')) && !peekLineTerminator()) {
-            // 11.3.1, 11.3.2
-            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
-                throwErrorTolerant({}, Messages.StrictLHSPostfix);
-            }
-
-            if (!isLeftHandSide(expr)) {
-                throwError({}, Messages.InvalidLHSInAssignment);
-            }
-
-            token = lex();
-            expr = delegate.createPostfixExpression(token.value, expr);
-        }
-
-        return expr;
-    }
-
-    // 11.4 Unary Operators
-
-    function parseUnaryExpression() {
-        var token, expr;
-
-        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
-            return parsePostfixExpression();
-        }
-
-        if (match('++') || match('--')) {
-            token = lex();
-            expr = parseUnaryExpression();
-            // 11.4.4, 11.4.5
-            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
-                throwErrorTolerant({}, Messages.StrictLHSPrefix);
-            }
-
-            if (!isLeftHandSide(expr)) {
-                throwError({}, Messages.InvalidLHSInAssignment);
-            }
-
-            return delegate.createUnaryExpression(token.value, expr);
-        }
-
-        if (match('+') || match('-') || match('~') || match('!')) {
-            token = lex();
-            expr = parseUnaryExpression();
-            return delegate.createUnaryExpression(token.value, expr);
-        }
-
-        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
-            token = lex();
-            expr = parseUnaryExpression();
-            expr = delegate.createUnaryExpression(token.value, expr);
-            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
-                throwErrorTolerant({}, Messages.StrictDelete);
-            }
-            return expr;
-        }
-
-        return parsePostfixExpression();
-    }
-
-    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;
-    }
-
-    // 11.5 Multiplicative Operators
-    // 11.6 Additive Operators
-    // 11.7 Bitwise Shift Operators
-    // 11.8 Relational Operators
-    // 11.9 Equality Operators
-    // 11.10 Binary Bitwise Operators
-    // 11.11 Binary Logical Operators
-
-    // Reduce: make a binary expression from the three topmost entries.
-    function reduceBinary(stack) {
-        var right = stack.pop(),
-            operator = stack.pop().value,
-            left = stack.pop();
-
-
-        if (operator === '||' || operator === '&&') {
-            stack.push(delegate.createLogicalExpression(operator, left, right));
-        } else {
-            stack.push(delegate.createBinaryExpression(operator, left, right));
-        }
-    }
-
-    function parseBinaryExpression() {
-        var expr, token, prec, previousAllowIn, stack;
-
-        previousAllowIn = state.allowIn;
-        state.allowIn = true;
-
-        expr = parseUnaryExpression();
-
-        token = lookahead;
-        prec = binaryPrecedence(token, previousAllowIn);
-        if (prec === 0) {
-            return expr;
-        }
-        token.prec = prec;
-        lex();
-
-        stack = [expr, token, parseUnaryExpression()];
-
-        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {
-
-            // Reduce.
-            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
-                reduceBinary(stack);
-            }
-
-            // Shift.
-            token = lex();
-            token.prec = prec;
-            stack.push(token);
-            stack.push(parseUnaryExpression());
-        }
-
-        // Final reduce to clean-up the stack.
-        while (stack.length > 1) {
-            reduceBinary(stack);
-        }
-
-        state.allowIn = previousAllowIn;
-        return stack[0];
-    }
-
-
-    // 11.12 Conditional Operator
-
-    function parseConditionalExpression() {
-        var expr, previousAllowIn, consequent, alternate;
-
-        expr = parseBinaryExpression();
-
-        if (match('?')) {
-            lex();
-            previousAllowIn = state.allowIn;
-            state.allowIn = true;
-            consequent = parseAssignmentExpression();
-            state.allowIn = previousAllowIn;
-            expect(':');
-            alternate = parseAssignmentExpression();
-
-            expr = delegate.createConditionalExpression(expr, consequent, alternate);
-        }
-
-        return expr;
-    }
-
-    // 11.13 Assignment Operators
-
-    function parseAssignmentExpression() {
-        var token, left, right;
-
-        token = lookahead;
-        left = parseConditionalExpression();
-
-        if (matchAssign()) {
-            // LeftHandSideExpression
-            if (!isLeftHandSide(left)) {
-                throwError({}, Messages.InvalidLHSInAssignment);
-            }
-
-            // 11.13.1
-            if (strict && left.type === Syntax.Identifier && isRestrictedWord(left.name)) {
-                throwErrorTolerant(token, Messages.StrictLHSAssignment);
-            }
-
-            token = lex();
-            right = parseAssignmentExpression();
-            return delegate.createAssignmentExpression(token.value, left, right);
-        }
-
-        return left;
-    }
-
-    // 11.14 Comma Operator
-
-    function parseExpression() {
-        var expr = parseAssignmentExpression();
-
-        if (match(',')) {
-            expr = delegate.createSequenceExpression([ expr ]);
-
-            while (index < length) {
-                if (!match(',')) {
-                    break;
-                }
-                lex();
-                expr.expressions.push(parseAssignmentExpression());
-            }
-
-        }
-        return expr;
-    }
-
-    // 12.1 Block
-
-    function parseStatementList() {
-        var list = [],
-            statement;
-
-        while (index < length) {
-            if (match('}')) {
-                break;
-            }
-            statement = parseSourceElement();
-            if (typeof statement === 'undefined') {
-                break;
-            }
-            list.push(statement);
-        }
-
-        return list;
-    }