/dist/jasmine/blanket_jasmine.js
JavaScript | 5307 lines | 4950 code | 203 blank | 154 comment | 337 complexity | f127db0b2df7e899c74494ab0544e13b MD5 | raw file
Possible License(s): MIT
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- /*! blanket - v1.1.5 */
- (function(define){
- /*
- Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
- Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
- Copyright (C) 2013 Mathias Bynens <mathias@qiwi.be>
- 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,
- throwErrorTolerant: true,
- throwError: true, generateStatement: true, peek: true,
- parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
- parseFunctionDeclaration: true, parseFunctionExpression: true,
- parseFunctionSourceElements: true, parseVariableIdentifier: true,
- parseLeftHandSideExpression: true,
- parseUnaryExpression: true,
- parseStatement: true, parseSourceElement: true */
- (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(['exports'], factory);
- } else if (typeof exports !== 'undefined') {
- factory(exports);
- } else {
- factory((root.esprima = {}));
- }
- }(this, function (exports) {
- 'use strict';
- var Token,
- TokenName,
- FnExprTokens,
- 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,
- RegularExpression: 9
- };
- 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';
- TokenName[Token.RegularExpression] = 'RegularExpression';
- // 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',
- 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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\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]')
- };
- // 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) {
- /* istanbul ignore if */
- if (!condition) {
- throw new Error('ASSERT: ' + message);
- }
- }
- function isDecimalDigit(ch) {
- return (ch >= 48 && ch <= 57); // 0..9
- }
- 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 === 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);
- }
- // 7.3 Line Terminators
- function isLineTerminator(ch) {
- return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029);
- }
- // 7.6 Identifier Names and Identifiers
- 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(String.fromCharCode(ch)));
- }
- 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(String.fromCharCode(ch)));
- }
- // 7.6.1.2 Future Reserved Words
- function isFutureReservedWord(id) {
- switch (id) {
- case 'class':
- case 'enum':
- case 'export':
- case 'extends':
- case 'import':
- case 'super':
- return true;
- default:
- return false;
- }
- }
- 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;
- }
- }
- 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 addComment(type, value, start, end, loc) {
- var comment, attacher;
- assert(typeof start === 'number', 'Comment must have valid position');
- // Because the way the actual token is scanned, often the comments
- // (if any) are skipped twice during the lexical analysis.
- // Thus, we need to skip adding a comment if the comment array already
- // handled it.
- if (state.lastCommentStart >= start) {
- return;
- }
- state.lastCommentStart = start;
- 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);
- }
- }
- 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)) {
- 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;
- }
- ++lineNumber;
- ++index;
- lineStart = index;
- if (index >= length) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- } 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;
- }
- }
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- function skipComment() {
- var ch, start;
- start = (index === 0);
- while (index < length) {
- ch = source.charCodeAt(index);
- if (isWhiteSpace(ch)) {
- ++index;
- } else if (isLineTerminator(ch)) {
- ++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 getEscapedIdentifier() {
- var ch, id;
- ch = source.charCodeAt(index++);
- id = String.fromCharCode(ch);
- // '\u' (U+005C, U+0075) denotes an escaped character.
- if (ch === 0x5C) {
- if (source.charCodeAt(index) !== 0x75) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- ++index;
- ch = scanHexEscape('u');
- if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- id = ch;
- }
- while (index < length) {
- ch = source.charCodeAt(index);
- if (!isIdentifierPart(ch)) {
- break;
- }
- ++index;
- id += String.fromCharCode(ch);
- // '\u' (U+005C, U+0075) denotes an escaped character.
- if (ch === 0x5C) {
- id = id.substr(0, id.length - 1);
- if (source.charCodeAt(index) !== 0x75) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- ++index;
- ch = scanHexEscape('u');
- if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- 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 getEscapedIdentifier();
- }
- 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) ? 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,
- start: start,
- end: index
- };
- }
- // 7.7 Punctuators
- function scanPunctuator() {
- var start = index,
- code = source.charCodeAt(index),
- code2,
- ch1 = source[index],
- ch2,
- ch3,
- ch4;
- switch (code) {
- // Check for most common single-character punctuators.
- case 0x2E: // . dot
- case 0x28: // ( open bracket
- case 0x29: // ) close bracket
- case 0x3B: // ; semicolon
- case 0x2C: // , comma
- case 0x7B: // { open curly brace
- case 0x7D: // } close curly brace
- case 0x5B: // [
- case 0x5D: // ]
- case 0x3A: // :
- case 0x3F: // ?
- case 0x7E: // ~
- ++index;
- if (extra.tokenize) {
- if (code === 0x28) {
- extra.openParenToken = extra.tokens.length;
- } else if (code === 0x7B) {
- extra.openCurlyToken = extra.tokens.length;
- }
- }
- return {
- type: Token.Punctuator,
- value: String.fromCharCode(code),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- default:
- code2 = source.charCodeAt(index + 1);
- // '=' (U+003D) marks an assignment or comparison operator.
- if (code2 === 0x3D) {
- switch (code) {
- case 0x2B: // +
- case 0x2D: // -
- case 0x2F: // /
- case 0x3C: // <
- case 0x3E: // >
- case 0x5E: // ^
- case 0x7C: // |
- case 0x25: // %
- case 0x26: // &
- case 0x2A: // *
- index += 2;
- return {
- type: Token.Punctuator,
- value: String.fromCharCode(code) + String.fromCharCode(code2),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- case 0x21: // !
- case 0x3D: // =
- index += 2;
- // !== and ===
- if (source.charCodeAt(index) === 0x3D) {
- ++index;
- }
- return {
- type: Token.Punctuator,
- value: source.slice(start, index),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- }
- }
- // 4-character punctuator: >>>=
- ch4 = source.substr(index, 4);
- if (ch4 === '>>>=') {
- index += 4;
- return {
- type: Token.Punctuator,
- value: ch4,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- // 3-character punctuators: === !== >>> <<= >>=
- ch3 = ch4.substr(0, 3);
- if (ch3 === '>>>' || ch3 === '<<=' || ch3 === '>>=') {
- index += 3;
- return {
- type: Token.Punctuator,
- value: ch3,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- // Other 2-character punctuators: ++ -- << >> && ||
- ch2 = ch3.substr(0, 2);
- if ((ch1 === ch2[1] && ('+-<>&|'.indexOf(ch1) >= 0)) || ch2 === '=>') {
- index += 2;
- return {
- type: Token.Punctuator,
- value: ch2,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- // 1-character punctuators: < > = ! + - * % & | ^ /
- if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
- ++index;
- return {
- type: Token.Punctuator,
- value: ch1,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- // 7.8.3 Numeric Literals
- function scanHexLiteral(start) {
- var number = '';
- while (index < length) {
- if (!isHexDigit(source[index])) {
- break;
- }
- number += source[index++];
- }
- if (number.length === 0) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- if (isIdentifierStart(source.charCodeAt(index))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- return {
- type: Token.NumericLiteral,
- value: parseInt('0x' + number, 16),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- function scanOctalLiteral(start) {
- var number = '0' + source[index++];
- while (index < length) {
- if (!isOctalDigit(source[index])) {
- break;
- }
- number += source[index++];
- }
- if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- return {
- type: Token.NumericLiteral,
- value: parseInt(number, 8),
- octal: true,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- 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'.
- if (number === '0') {
- if (ch === 'x' || ch === 'X') {
- ++index;
- return scanHexLiteral(start);
- }
- if (isOctalDigit(ch)) {
- return scanOctalLiteral(start);
- }
- // decimal number starts with '0' such as '09' is illegal.
- if (ch && isDecimalDigit(ch.charCodeAt(0))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- }
- 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 {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- }
- if (isIdentifierStart(source.charCodeAt(index))) {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- return {
- type: Token.NumericLiteral,
- value: parseFloat(number),
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- // 7.8.4 String Literals
- function scanStringLiteral() {
- var str = '', quote, start, ch, code, unescaped, restore, octal = false, startLineNumber, startLineStart;
- startLineNumber = lineNumber;
- startLineStart = lineStart;
- 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':
- restore = index;
- unescaped = scanHexEscape(ch);
- if (unescaped) {
- str += unescaped;
- } else {
- index = restore;
- str += ch;
- }
- 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;
- 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;
- }
- lineStart = index;
- }
- } else if (isLineTerminator(ch.charCodeAt(0))) {
- break;
- } else {
- str += ch;
- }
- }
- if (quote !== '') {
- throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- return {
- type: Token.StringLiteral,
- value: str,
- octal: octal,
- startLineNumber: startLineNumber,
- startLineStart: startLineStart,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- function testRegExp(pattern, flags) {
- var value;
- try {
- value = new RegExp(pattern, flags);
- } catch (e) {
- throwError({}, Messages.InvalidRegExp);
- }
- return value;
- }
- 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))) {
- throwError({}, Messages.UnterminatedRegExp);
- }
- str += ch;
- } else if (isLineTerminator(ch.charCodeAt(0))) {
- throwError({}, Messages.UnterminatedRegExp);
- } else if (classMarker) {
- if (ch === ']') {
- classMarker = false;
- }
- } else {
- if (ch === '/') {
- terminated = true;
- break;
- } else if (ch === '[') {
- classMarker = true;
- }
- }
- }
- if (!terminated) {
- throwError({}, 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';
- }
- throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
- } else {
- str += '\\';
- throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
- }
- } else {
- flags += ch;
- str += ch;
- }
- }
- return {
- value: flags,
- literal: str
- };
- }
- function scanRegExp() {
- var start, body, flags, pattern, value;
- lookahead = null;
- skipComment();
- start = index;
- body = scanRegExpBody();
- flags = scanRegExpFlags();
- value = testRegExp(body.value, flags.value);
- if (extra.tokenize) {
- return {
- type: Token.RegularExpression,
- value: value,
- lineNumber: lineNumber,
- lineStart: lineStart,
- start: start,
- end: index
- };
- }
- return {
- literal: body.literal + flags.literal,
- value: 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,
- 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;
- }
- function advanceSlash() {
- var prevToken,
- checkToken;
- // Using the following algorithm:
- // https://github.com/mozilla/sweet.js/wiki/design
- prevToken = extra.tokens[extra.tokens.length - 1];
- if (!prevToken) {
- // Nothing before that: it cannot be a division.
- return collectRegex();
- }
- if (prevToken.type === 'Punctuator') {
- if (prevToken.value === ']') {
- return scanPunctuator();
- }
- if (prevToken.value === ')') {
- checkToken = extra.tokens[extra.openParenToken - 1];
- if (checkToken &&
- checkToken.type === 'Keyword' &&
- (checkToken.value === 'if' ||
- checkToken.value === 'while' ||
- checkToken.value === 'for' ||
- checkToken.value === 'with')) {
- return collectRegex();
- }
- return scanPunctuator();
- }
- if (prevToken.value === '}') {
- // Dividing a function by anything makes little sense,
- // but we have to check for that.
- if …
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