1 line
97 KiB
JavaScript
1 line
97 KiB
JavaScript
"use strict";(function(root, factory){"use strict";if(typeof define === "function" && define.amd){define(["exports"], factory);}else if(typeof exports !== "undefined"){factory(exports);}else {factory(root.esprima = {});}})(undefined, function(exports){"use strict";var Token, TokenName, FnExprTokens, Syntax, PropertyKind, Messages, Regex, SyntaxTreeDelegate, ClassPropertyType, 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, Template:10};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";FnExprTokens = ["(", "{", "[", "in", "typeof", "instanceof", "new", "return", "case", "delete", "throw", "void", "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "&=", "|=", "^=", ",", "+", "-", "*", "/", "%", "++", "--", "<<", ">>", ">>>", "&", "|", "^", "!", "~", "&&", "||", "?", ":", "===", "==", ">=", "<=", "<", ">", "!=", "!=="];Syntax = {ArrayExpression:"ArrayExpression", ArrayPattern:"ArrayPattern", ArrowFunctionExpression:"ArrowFunctionExpression", AssignmentExpression:"AssignmentExpression", BinaryExpression:"BinaryExpression", BlockStatement:"BlockStatement", BreakStatement:"BreakStatement", CallExpression:"CallExpression", CatchClause:"CatchClause", ClassBody:"ClassBody", ClassDeclaration:"ClassDeclaration", ClassExpression:"ClassExpression", ComprehensionBlock:"ComprehensionBlock", ComprehensionExpression:"ComprehensionExpression", ConditionalExpression:"ConditionalExpression", ContinueStatement:"ContinueStatement", DebuggerStatement:"DebuggerStatement", DoWhileStatement:"DoWhileStatement", EmptyStatement:"EmptyStatement", ExportDeclaration:"ExportDeclaration", ExportBatchSpecifier:"ExportBatchSpecifier", ExportSpecifier:"ExportSpecifier", ExpressionStatement:"ExpressionStatement", ForInStatement:"ForInStatement", ForOfStatement:"ForOfStatement", ForStatement:"ForStatement", FunctionDeclaration:"FunctionDeclaration", FunctionExpression:"FunctionExpression", Identifier:"Identifier", IfStatement:"IfStatement", ImportDeclaration:"ImportDeclaration", ImportSpecifier:"ImportSpecifier", LabeledStatement:"LabeledStatement", Literal:"Literal", LogicalExpression:"LogicalExpression", MemberExpression:"MemberExpression", MethodDefinition:"MethodDefinition", ModuleDeclaration:"ModuleDeclaration", NewExpression:"NewExpression", ObjectExpression:"ObjectExpression", ObjectPattern:"ObjectPattern", Program:"Program", Property:"Property", ReturnStatement:"ReturnStatement", SequenceExpression:"SequenceExpression", SpreadElement:"SpreadElement", SwitchCase:"SwitchCase", SwitchStatement:"SwitchStatement", TaggedTemplateExpression:"TaggedTemplateExpression", TemplateElement:"TemplateElement", TemplateLiteral:"TemplateLiteral", ThisExpression:"ThisExpression", ThrowStatement:"ThrowStatement", TryStatement:"TryStatement", UnaryExpression:"UnaryExpression", UpdateExpression:"UpdateExpression", VariableDeclaration:"VariableDeclaration", VariableDeclarator:"VariableDeclarator", WhileStatement:"WhileStatement", WithStatement:"WithStatement", YieldExpression:"YieldExpression"};PropertyKind = {Data:1, Get:2, Set:4};ClassPropertyType = {"static":"static", prototype:"prototype"};Messages = {UnexpectedToken:"Unexpected token %0", UnexpectedNumber:"Unexpected number", UnexpectedString:"Unexpected string", UnexpectedIdentifier:"Unexpected identifier", UnexpectedReserved:"Unexpected reserved word", UnexpectedTemplate:"Unexpected quasi %0", UnexpectedEOS:"Unexpected end of input", NewlineAfterThrow:"Illegal newline after throw", InvalidRegExp:"Invalid regular expression", UnterminatedRegExp:"Invalid regular expression: missing /", InvalidLHSInAssignment:"Invalid left-hand side in assignment", InvalidLHSInFormalsList:"Invalid left-hand side in formals list", 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", IllegalDuplicateClassProperty:"Illegal duplicate property in class definition", IllegalReturn:"Illegal return statement", IllegalYield:"Illegal yield expression", IllegalSpread:"Illegal spread element", 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", ParameterAfterRestParameter:"Rest parameter must be final parameter of an argument list", DefaultRestParameter:"Rest parameter can not have a default value", ElementAfterSpreadElement:"Spread must be the final element of an element list", ObjectPatternAsRestParameter:"Invalid rest parameter", ObjectPatternAsSpread:"Invalid spread argument", 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", NewlineAfterModule:"Illegal newline after module", NoFromAfterImport:"Missing from after import", InvalidModuleSpecifier:"Invalid module specifier", NestedModule:"Module declaration can not be nested", NoUnintializedConst:"Const must be initialized", ComprehensionRequiresBlock:"Comprehension must have at least one block", ComprehensionError:"Comprehension Error", EachNotAllowed:"Each is not supported"};Regex = {NonAsciiIdentifierStart:new RegExp("[ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԧԱ-Ֆՙա-ևא-תװ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࢠࢢ-ࢬऄ-हऽॐक़-ॡॱ-ॷॹ-ॿঅ-ঌএঐও-নপ-রলশ-হঽৎড়ঢ়য়-ৡৰৱਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-ઍએ-ઑઓ-નપ-રલળવ-હઽૐૠૡଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହଽଡ଼ଢ଼ୟ-ୡୱஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹௐఅ-ఌఎ-ఐఒ-నప-ళవ-హఽౘౙౠౡಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹಽೞೠೡೱೲഅ-ഌഎ-ഐഒ-ഺഽൎൠൡൺ-ൿඅ-ඖක-නඳ-රලව-ෆก-ะาำเ-ๆກຂຄງຈຊຍດ-ທນ-ຟມ-ຣລວສຫອ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿၐ-ၕၚ-ၝၡၥၦၮ-ၰၵ-ႁႎႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚᎀ-ᎏᎠ-Ᏼᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛰᜀ-ᜌᜎ-ᜑᜠ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤜᥐ-ᥭᥰ-ᥴᦀ-ᦫᧁ-ᧇᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭋᮃ-ᮠᮮᮯᮺ-ᯥᰀ-ᰣᱍ-ᱏᱚ-ᱽᳩ-ᳬᳮ-ᳱᳵᳶᴀ-ᶿḀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼⁱⁿₐ-ₜℂℇℊ-ℓℕℙ-ℝℤΩℨK-ℭℯ-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞⸯ々-〇〡-〩〱-〵〸-〼ぁ-ゖゝ-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚗꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞓꞠ-Ɦꟸ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꪀ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꯀ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ff-stﬓ-ﬗיִײַ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ]"), NonAsciiIdentifierPart:new RegExp("[ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮ̀-ʹͶͷͺ-ͽΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁ҃-҇Ҋ-ԧԱ-Ֆՙա-և֑-ׇֽֿׁׂׅׄא-תװ-ײؐ-ؚؠ-٩ٮ-ۓە-ۜ۟-۪ۨ-ۼۿܐ-݊ݍ-ޱ߀-ߵߺࠀ-࠭ࡀ-࡛ࢠࢢ-ࢬࣤ-ࣾऀ-ॣ०-९ॱ-ॷॹ-ॿঁ-ঃঅ-ঌএঐও-নপ-রলশ-হ়-ৄেৈো-ৎৗড়ঢ়য়-ৣ০-ৱਁ-ਃਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹ਼ਾ-ੂੇੈੋ-੍ੑਖ਼-ੜਫ਼੦-ੵઁ-ઃઅ-ઍએ-ઑઓ-નપ-રલળવ-હ઼-ૅે-ૉો-્ૐૠ-ૣ૦-૯ଁ-ଃଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହ଼-ୄେୈୋ-୍ୖୗଡ଼ଢ଼ୟ-ୣ୦-୯ୱஂஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹா-ூெ-ைொ-்ௐௗ௦-௯ఁ-ఃఅ-ఌఎ-ఐఒ-నప-ళవ-హఽ-ౄె-ైొ-్ౕౖౘౙౠ-ౣ౦-౯ಂಃಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹ಼-ೄೆ-ೈೊ-್ೕೖೞೠ-ೣ೦-೯ೱೲംഃഅ-ഌഎ-ഐഒ-ഺഽ-ൄെ-ൈൊ-ൎൗൠ-ൣ൦-൯ൺ-ൿංඃඅ-ඖක-නඳ-රලව-ෆ්ා-ුූෘ-ෟෲෳก-ฺเ-๎๐-๙ກຂຄງຈຊຍດ-ທນ-ຟມ-ຣລວສຫອ-ູົ-ຽເ-ໄໆ່-ໍ໐-໙ໜ-ໟༀ༘༙༠-༩༹༵༷༾-ཇཉ-ཬཱ-྄྆-ྗྙ-ྼ࿆က-၉ၐ-ႝႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚ፝-፟ᎀ-ᎏᎠ-Ᏼᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛰᜀ-ᜌᜎ-᜔ᜠ-᜴ᝀ-ᝓᝠ-ᝬᝮ-ᝰᝲᝳក-៓ៗៜ៝០-៩᠋-᠍᠐-᠙ᠠ-ᡷᢀ-ᢪᢰ-ᣵᤀ-ᤜᤠ-ᤫᤰ-᤻᥆-ᥭᥰ-ᥴᦀ-ᦫᦰ-ᧉ᧐-᧙ᨀ-ᨛᨠ-ᩞ᩠-᩿᩼-᪉᪐-᪙ᪧᬀ-ᭋ᭐-᭙᭫-᭳ᮀ-᯳ᰀ-᰷᱀-᱉ᱍ-ᱽ᳐-᳔᳒-ᳶᴀ-ᷦ᷼-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼ‿⁀⁔ⁱⁿₐ-ₜ⃐-⃥⃜⃡-⃰ℂℇℊ-ℓℕℙ-ℝℤΩℨK-ℭℯ-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯ⵿-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞⷠ-ⷿⸯ々-〇〡-〯〱-〵〸-〼ぁ-ゖ゙゚ゝ-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘫꙀ-꙯ꙴ-꙽ꙿ-ꚗꚟ-꛱ꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞓꞠ-Ɦꟸ-ꠧꡀ-ꡳꢀ-꣄꣐-꣙꣠-ꣷꣻ꤀-꤭ꤰ-꥓ꥠ-ꥼꦀ-꧀ꧏ-꧙ꨀ-ꨶꩀ-ꩍ꩐-꩙ꩠ-ꩶꩺꩻꪀ-ꫂꫛ-ꫝꫠ-ꫯꫲ-꫶ꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꯀ-ꯪ꯬꯭꯰-꯹가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ff-stﬓ-ﬗיִ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻ︀-️︠-︦︳︴﹍-﹏ﹰ-ﹴﹶ-ﻼ０-９Ａ-Ｚ＿ａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ]")};function assert(condition, message){if(!condition){throw new Error("ASSERT: " + message);}}function isDecimalDigit(ch){return ch >= 48 && ch <= 57;}function isHexDigit(ch){return "0123456789abcdefABCDEF".indexOf(ch) >= 0;}function isOctalDigit(ch){return "01234567".indexOf(ch) >= 0;}function isWhiteSpace(ch){return ch === 32 || ch === 9 || ch === 11 || ch === 12 || ch === 160 || ch >= 5760 && " ".indexOf(String.fromCharCode(ch)) > 0;}function isLineTerminator(ch){return ch === 10 || ch === 13 || ch === 8232 || ch === 8233;}function isIdentifierStart(ch){return ch === 36 || ch === 95 || ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 || ch === 92 || ch >= 128 && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch));}function isIdentifierPart(ch){return ch === 36 || ch === 95 || ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 || ch >= 48 && ch <= 57 || ch === 92 || ch >= 128 && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch));}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";}function isKeyword(id){if(strict && isStrictModeReservedWord(id)){return true;}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 === "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;}}function skipComment(){var ch, blockComment, lineComment;blockComment = false;lineComment = false;while(index < length) {ch = source.charCodeAt(index);if(lineComment){++index;if(isLineTerminator(ch)){lineComment = false;if(ch === 13 && source.charCodeAt(index) === 10){++index;}++lineNumber;lineStart = index;}}else if(blockComment){if(isLineTerminator(ch)){if(ch === 13 && source.charCodeAt(index + 1) === 10){++index;}++lineNumber;++index;lineStart = index;if(index >= length){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}}else {ch = source.charCodeAt(index++);if(index >= length){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}if(ch === 42){ch = source.charCodeAt(index);if(ch === 47){++index;blockComment = false;}}}}else if(ch === 47){ch = source.charCodeAt(index + 1);if(ch === 47){index += 2;lineComment = true;}else if(ch === 42){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 === 13 && source.charCodeAt(index) === 10){++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 scanUnicodeCodePointEscape(){var ch, code, cu1, cu2;ch = source[index];code = 0;if(ch === "}"){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}while(index < length) {ch = source[index++];if(!isHexDigit(ch)){break;}code = code * 16 + "0123456789abcdef".indexOf(ch.toLowerCase());}if(code > 1114111 || ch !== "}"){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}if(code <= 65535){return String.fromCharCode(code);}cu1 = (code - 65536 >> 10) + 55296;cu2 = (code - 65536 & 1023) + 56320;return String.fromCharCode(cu1, cu2);}function getEscapedIdentifier(){var ch, id;ch = source.charCodeAt(index++);id = String.fromCharCode(ch);if(ch === 92){if(source.charCodeAt(index) !== 117){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);if(ch === 92){id = id.substr(0, id.length - 1);if(source.charCodeAt(index) !== 117){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 === 92){index = start;return getEscapedIdentifier();}if(isIdentifierPart(ch)){++index;}else {break;}}return source.slice(start, index);}function scanIdentifier(){var start, id, type;start = index;id = source.charCodeAt(index) === 92?getEscapedIdentifier():getIdentifier();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]};}function scanPunctuator(){var start=index, code=source.charCodeAt(index), code2, ch1=source[index], ch2, ch3, ch4;switch(code){case 40:case 41:case 59:case 44:case 123:case 125:case 91:case 93:case 58:case 63:case 126:++index;if(extra.tokenize){if(code === 40){extra.openParenToken = extra.tokens.length;}else if(code === 123){extra.openCurlyToken = extra.tokens.length;}}return {type:Token.Punctuator, value:String.fromCharCode(code), lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};default:code2 = source.charCodeAt(index + 1);if(code2 === 61){switch(code){case 37:case 38:case 42:case 43:case 45:case 47:case 60:case 62:case 94:case 124:index += 2;return {type:Token.Punctuator, value:String.fromCharCode(code) + String.fromCharCode(code2), lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};case 33:case 61:index += 2;if(source.charCodeAt(index) === 61){++index;}return {type:Token.Punctuator, value:source.slice(start, index), lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};default:break;}}break;}ch2 = source[index + 1];ch3 = source[index + 2];ch4 = source[index + 3];if(ch1 === ">" && ch2 === ">" && ch3 === ">"){if(ch4 === "="){index += 4;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]};}if(ch1 === ch2 && "+-<>&|".indexOf(ch1) >= 0){index += 2;return {type:Token.Punctuator, value:ch1 + ch2, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}if(ch1 === "=" && ch2 === ">"){index += 2;return {type:Token.Punctuator, value:"=>", lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}if("<>=!+-*%&|^/".indexOf(ch1) >= 0){++index;return {type:Token.Punctuator, value:ch1, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}if(ch1 === "."){++index;return {type:Token.Punctuator, value:ch1, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}throwError({}, Messages.UnexpectedToken, "ILLEGAL");}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, range:[start, index]};}function scanOctalLiteral(prefix, start){var number, octal;if(isOctalDigit(prefix)){octal = true;number = "0" + source[index++];}else {octal = false;++index;number = "";}while(index < length) {if(!isOctalDigit(source[index])){break;}number += source[index++];}if(!octal && number.length === 0){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}if(isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}return {type:Token.NumericLiteral, value:parseInt(number, 8), octal:octal, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}function scanNumericLiteral(){var number, start, ch, octal;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];if(number === "0"){if(ch === "x" || ch === "X"){++index;return scanHexLiteral(start);}if(ch === "b" || ch === "B"){++index;number = "";while(index < length) {ch = source[index];if(ch !== "0" && ch !== "1"){break;}number += source[index++];}if(number.length === 0){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}if(index < length){ch = source.charCodeAt(index);if(isIdentifierStart(ch) || isDecimalDigit(ch)){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}}return {type:Token.NumericLiteral, value:parseInt(number, 2), lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}if(ch === "o" || ch === "O" || isOctalDigit(ch)){return scanOctalLiteral(ch, start);}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, range:[start, index]};}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(!ch || !isLineTerminator(ch.charCodeAt(0))){switch(ch){case "n":str += "\n";break;case "r":str += "\r";break;case "t":str += "\t";break;case "u":case "x":if(source[index] === "{"){++index;str += scanUnicodeCodePointEscape();}else {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 += "\u000b";break;default:if(isOctalDigit(ch)){code = "01234567".indexOf(ch);if(code !== 0){octal = true;}if(index < length && isOctalDigit(source[index])){octal = true;code = code * 8 + "01234567".indexOf(source[index++]);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.charCodeAt(0))){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 scanTemplate(){var cooked="", ch, start, terminated, tail, restore, unescaped, code, octal;terminated = false;tail = false;start = index;++index;while(index < length) {ch = source[index++];if(ch === "`"){tail = true;terminated = true;break;}else if(ch === "$"){if(source[index] === "{"){++index;terminated = true;break;}cooked += ch;}else if(ch === "\\"){ch = source[index++];if(!isLineTerminator(ch.charCodeAt(0))){switch(ch){case "n":cooked += "\n";break;case "r":cooked += "\r";break;case "t":cooked += "\t";break;case "u":case "x":if(source[index] === "{"){++index;cooked += scanUnicodeCodePointEscape();}else {restore = index;unescaped = scanHexEscape(ch);if(unescaped){cooked += unescaped;}else {index = restore;cooked += ch;}}break;case "b":cooked += "\b";break;case "f":cooked += "\f";break;case "v":cooked += "\u000b";break;default:if(isOctalDigit(ch)){code = "01234567".indexOf(ch);if(code !== 0){octal = true;}if(index < length && isOctalDigit(source[index])){octal = true;code = code * 8 + "01234567".indexOf(source[index++]);if("0123".indexOf(ch) >= 0 && index < length && isOctalDigit(source[index])){code = code * 8 + "01234567".indexOf(source[index++]);}}cooked += String.fromCharCode(code);}else {cooked += ch;}break;}}else {++lineNumber;if(ch === "\r" && source[index] === "\n"){++index;}}}else if(isLineTerminator(ch.charCodeAt(0))){++lineNumber;if(ch === "\r" && source[index] === "\n"){++index;}cooked += "\n";}else {cooked += ch;}}if(!terminated){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}return {type:Token.Template, value:{cooked:cooked, raw:source.slice(start + 1, index - (tail?1:2))}, tail:tail, octal:octal, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}function scanTemplateElement(option){var startsWith, template;lookahead = null;skipComment();startsWith = option.head?"`":"}";if(source[index] !== startsWith){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}template = scanTemplate();peek();return template;}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++];if(isLineTerminator(ch.charCodeAt(0))){throwError({}, Messages.UnterminatedRegExp);}str += ch;}else if(ch === "/"){terminated = true;break;}else if(ch === "["){classMarker = true;}else if(isLineTerminator(ch.charCodeAt(0))){throwError({}, Messages.UnterminatedRegExp);}}}if(!terminated){throwError({}, Messages.UnterminatedRegExp);}pattern = str.substr(1, str.length - 2);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";}}else {str += "\\";}}else {flags += ch;str += ch;}}try{value = new RegExp(pattern, flags);}catch(e) {throwError({}, Messages.InvalidRegExp);}peek();if(extra.tokenize){return {type:Token.RegularExpression, value:value, lineNumber:lineNumber, lineStart:lineStart, range:[start, index]};}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 advanceSlash(){var prevToken, checkToken;prevToken = extra.tokens[extra.tokens.length - 1];if(!prevToken){return scanRegExp();}if(prevToken.type === "Punctuator"){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 scanRegExp();}return scanPunctuator();}if(prevToken.value === "}"){if(extra.tokens[extra.openCurlyToken - 3] && extra.tokens[extra.openCurlyToken - 3].type === "Keyword"){checkToken = extra.tokens[extra.openCurlyToken - 4];if(!checkToken){return scanPunctuator();}}else if(extra.tokens[extra.openCurlyToken - 4] && extra.tokens[extra.openCurlyToken - 4].type === "Keyword"){checkToken = extra.tokens[extra.openCurlyToken - 5];if(!checkToken){return scanRegExp();}}else {return scanPunctuator();}if(FnExprTokens.indexOf(checkToken.value) >= 0){return scanPunctuator();}return scanRegExp();}return scanRegExp();}if(prevToken.type === "Keyword"){return scanRegExp();}return scanPunctuator();}function advance(){var ch;skipComment();if(index >= length){return {type:Token.EOF, lineNumber:lineNumber, lineStart:lineStart, range:[index, index]};}ch = source.charCodeAt(index);if(ch === 40 || ch === 41 || ch === 58){return scanPunctuator();}if(ch === 39 || ch === 34){return scanStringLiteral();}if(ch === 96){return scanTemplate();}if(isIdentifierStart(ch)){return scanIdentifier();}if(ch === 46){if(isDecimalDigit(source.charCodeAt(index + 1))){return scanNumericLiteral();}return scanPunctuator();}if(isDecimalDigit(ch)){return scanNumericLiteral();}if(extra.tokenize && ch === 47){return advanceSlash();}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;}function lookahead2(){var adv, pos, line, start, result;adv = typeof extra.advance === "function"?extra.advance:advance;pos = index;line = lineNumber;start = lineStart;if(lookahead === null){lookahead = adv();}index = lookahead.range[1];lineNumber = lookahead.lineNumber;lineStart = lookahead.lineStart;result = adv();index = pos;lineNumber = line;lineStart = start;return result;}function markerCreate(){if(!extra.loc && !extra.range){return undefined;}skipComment();return {offset:index, line:lineNumber, col:index - lineStart};}function markerApply(marker, node){if(extra.range){node.range = [marker.offset, index];}if(extra.loc){node.loc = {start:{line:marker.line, column:marker.col}, end:{line:lineNumber, column:index - lineStart}};node = delegate.postProcess(node);}return node;}SyntaxTreeDelegate = {name:"SyntaxTree", postProcess:function postProcess(node){return node;}, createArrayExpression:function createArrayExpression(elements){return {type:Syntax.ArrayExpression, elements:elements};}, createAssignmentExpression:function createAssignmentExpression(operator, left, right){return {type:Syntax.AssignmentExpression, operator:operator, left:left, right:right};}, createBinaryExpression:function createBinaryExpression(operator, left, right){var type=operator === "||" || operator === "&&"?Syntax.LogicalExpression:Syntax.BinaryExpression;return {type:type, operator:operator, left:left, right:right};}, createBlockStatement:function createBlockStatement(body){return {type:Syntax.BlockStatement, body:body};}, createBreakStatement:function createBreakStatement(label){return {type:Syntax.BreakStatement, label:label};}, createCallExpression:function createCallExpression(callee, args){return {type:Syntax.CallExpression, callee:callee, arguments:args};}, createCatchClause:function createCatchClause(param, body){return {type:Syntax.CatchClause, param:param, body:body};}, createConditionalExpression:function createConditionalExpression(test, consequent, alternate){return {type:Syntax.ConditionalExpression, test:test, consequent:consequent, alternate:alternate};}, createContinueStatement:function createContinueStatement(label){return {type:Syntax.ContinueStatement, label:label};}, createDebuggerStatement:function createDebuggerStatement(){return {type:Syntax.DebuggerStatement};}, createDoWhileStatement:function createDoWhileStatement(body, test){return {type:Syntax.DoWhileStatement, body:body, test:test};}, createEmptyStatement:function createEmptyStatement(){return {type:Syntax.EmptyStatement};}, createExpressionStatement:function createExpressionStatement(expression){return {type:Syntax.ExpressionStatement, expression:expression};}, createForStatement:function createForStatement(init, test, update, body){return {type:Syntax.ForStatement, init:init, test:test, update:update, body:body};}, createForInStatement:function createForInStatement(left, right, body){return {type:Syntax.ForInStatement, left:left, right:right, body:body, each:false};}, createForOfStatement:function createForOfStatement(left, right, body){return {type:Syntax.ForOfStatement, left:left, right:right, body:body};}, createFunctionDeclaration:function createFunctionDeclaration(id, params, defaults, body, rest, generator, expression){return {type:Syntax.FunctionDeclaration, id:id, params:params, defaults:defaults, body:body, rest:rest, generator:generator, expression:expression};}, createFunctionExpression:function createFunctionExpression(id, params, defaults, body, rest, generator, expression){return {type:Syntax.FunctionExpression, id:id, params:params, defaults:defaults, body:body, rest:rest, generator:generator, expression:expression};}, createIdentifier:function createIdentifier(name){return {type:Syntax.Identifier, name:name};}, createIfStatement:function createIfStatement(test, consequent, alternate){return {type:Syntax.IfStatement, test:test, consequent:consequent, alternate:alternate};}, createLabeledStatement:function createLabeledStatement(label, body){return {type:Syntax.LabeledStatement, label:label, body:body};}, createLiteral:function createLiteral(token){return {type:Syntax.Literal, value:token.value, raw:source.slice(token.range[0], token.range[1])};}, createMemberExpression:function createMemberExpression(accessor, object, property){return {type:Syntax.MemberExpression, computed:accessor === "[", object:object, property:property};}, createNewExpression:function createNewExpression(callee, args){return {type:Syntax.NewExpression, callee:callee, arguments:args};}, createObjectExpression:function createObjectExpression(properties){return {type:Syntax.ObjectExpression, properties:properties};}, createPostfixExpression:function createPostfixExpression(operator, argument){return {type:Syntax.UpdateExpression, operator:operator, argument:argument, prefix:false};}, createProgram:function createProgram(body){return {type:Syntax.Program, body:body};}, createProperty:function createProperty(kind, key, value, method, shorthand, computed){return {type:Syntax.Property, key:key, value:value, kind:kind, method:method, shorthand:shorthand, computed:computed};}, createReturnStatement:function createReturnStatement(argument){return {type:Syntax.ReturnStatement, argument:argument};}, createSequenceExpression:function createSequenceExpression(expressions){return {type:Syntax.SequenceExpression, expressions:expressions};}, createSwitchCase:function createSwitchCase(test, consequent){return {type:Syntax.SwitchCase, test:test, consequent:consequent};}, createSwitchStatement:function createSwitchStatement(discriminant, cases){return {type:Syntax.SwitchStatement, discriminant:discriminant, cases:cases};}, createThisExpression:function createThisExpression(){return {type:Syntax.ThisExpression};}, createThrowStatement:function createThrowStatement(argument){return {type:Syntax.ThrowStatement, argument:argument};}, createTryStatement:function createTryStatement(block, guardedHandlers, handlers, finalizer){return {type:Syntax.TryStatement, block:block, guardedHandlers:guardedHandlers, handlers:handlers, finalizer:finalizer};}, createUnaryExpression:function createUnaryExpression(operator, argument){if(operator === "++" || operator === "--"){return {type:Syntax.UpdateExpression, operator:operator, argument:argument, prefix:true};}return {type:Syntax.UnaryExpression, operator:operator, argument:argument, prefix:true};}, createVariableDeclaration:function createVariableDeclaration(declarations, kind){return {type:Syntax.VariableDeclaration, declarations:declarations, kind:kind};}, createVariableDeclarator:function createVariableDeclarator(id, init){return {type:Syntax.VariableDeclarator, id:id, init:init};}, createWhileStatement:function createWhileStatement(test, body){return {type:Syntax.WhileStatement, test:test, body:body};}, createWithStatement:function createWithStatement(object, body){return {type:Syntax.WithStatement, object:object, body:body};}, createTemplateElement:function createTemplateElement(value, tail){return {type:Syntax.TemplateElement, value:value, tail:tail};}, createTemplateLiteral:function createTemplateLiteral(quasis, expressions){return {type:Syntax.TemplateLiteral, quasis:quasis, expressions:expressions};}, createSpreadElement:function createSpreadElement(argument){return {type:Syntax.SpreadElement, argument:argument};}, createTaggedTemplateExpression:function createTaggedTemplateExpression(tag, quasi){return {type:Syntax.TaggedTemplateExpression, tag:tag, quasi:quasi};}, createArrowFunctionExpression:function createArrowFunctionExpression(params, defaults, body, rest, expression){return {type:Syntax.ArrowFunctionExpression, id:null, params:params, defaults:defaults, body:body, rest:rest, generator:false, expression:expression};}, createMethodDefinition:function createMethodDefinition(propertyType, kind, key, value){return {type:Syntax.MethodDefinition, key:key, value:value, kind:kind, "static":propertyType === ClassPropertyType["static"]};}, createClassBody:function createClassBody(body){return {type:Syntax.ClassBody, body:body};}, createClassExpression:function createClassExpression(id, superClass, body){return {type:Syntax.ClassExpression, id:id, superClass:superClass, body:body};}, createClassDeclaration:function createClassDeclaration(id, superClass, body){return {type:Syntax.ClassDeclaration, id:id, superClass:superClass, body:body};}, createExportSpecifier:function createExportSpecifier(id, name){return {type:Syntax.ExportSpecifier, id:id, name:name};}, createExportBatchSpecifier:function createExportBatchSpecifier(){return {type:Syntax.ExportBatchSpecifier};}, createExportDeclaration:function createExportDeclaration(declaration, specifiers, source){return {type:Syntax.ExportDeclaration, declaration:declaration, specifiers:specifiers, source:source};}, createImportSpecifier:function createImportSpecifier(id, name){return {type:Syntax.ImportSpecifier, id:id, name:name};}, createImportDeclaration:function createImportDeclaration(specifiers, kind, source){return {type:Syntax.ImportDeclaration, specifiers:specifiers, kind:kind, source:source};}, createYieldExpression:function createYieldExpression(argument, delegate){return {type:Syntax.YieldExpression, argument:argument, delegate:delegate};}, createModuleDeclaration:function createModuleDeclaration(id, source, body){return {type:Syntax.ModuleDeclaration, id:id, source:source, body:body};}, createComprehensionExpression:function createComprehensionExpression(filter, blocks, body){return {type:Syntax.ComprehensionExpression, filter:filter, blocks:blocks, body:body};}};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;}function throwError(token, messageFormat){var error, args=Array.prototype.slice.call(arguments, 2), msg=messageFormat.replace(/%(\d)/g, function(whole, index){assert(index < args.length, "Message reference must be in range");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;}error.description = msg;throw error;}function throwErrorTolerant(){try{throwError.apply(null, arguments);}catch(e) {if(extra.errors){extra.errors.push(e);}else {throw e;}}}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);}if(token.type === Token.Template){throwError(token, Messages.UnexpectedTemplate, token.value.raw);}throwError(token, Messages.UnexpectedToken, token.value);}function expect(value){var token=lex();if(token.type !== Token.Punctuator || token.value !== value){throwUnexpected(token);}}function expectKeyword(keyword){var token=lex();if(token.type !== Token.Keyword || token.value !== keyword){throwUnexpected(token);}}function match(value){return lookahead.type === Token.Punctuator && lookahead.value === value;}function matchKeyword(keyword){return lookahead.type === Token.Keyword && lookahead.value === keyword;}function matchContextualKeyword(keyword){return lookahead.type === Token.Identifier && lookahead.value === keyword;}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;if(source.charCodeAt(index) === 59){lex();return;}line = lineNumber;skipComment();if(lineNumber !== line){return;}if(match(";")){lex();return;}if(lookahead.type !== Token.EOF && !match("}")){throwUnexpected(lookahead);}}function isLeftHandSide(expr){return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;}function isAssignableLeftHandSide(expr){return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;}function parseArrayInitialiser(){var elements=[], blocks=[], filter=null, tmp, possiblecomprehension=true, body, marker=markerCreate();expect("[");while(!match("]")) {if(lookahead.value === "for" && lookahead.type === Token.Keyword){if(!possiblecomprehension){throwError({}, Messages.ComprehensionError);}matchKeyword("for");tmp = parseForStatement({ignoreBody:true});tmp.of = tmp.type === Syntax.ForOfStatement;tmp.type = Syntax.ComprehensionBlock;if(tmp.left.kind){throwError({}, Messages.ComprehensionError);}blocks.push(tmp);}else if(lookahead.value === "if" && lookahead.type === Token.Keyword){if(!possiblecomprehension){throwError({}, Messages.ComprehensionError);}expectKeyword("if");expect("(");filter = parseExpression();expect(")");}else if(lookahead.value === "," && lookahead.type === Token.Punctuator){possiblecomprehension = false;lex();elements.push(null);}else {tmp = parseSpreadOrAssignmentExpression();elements.push(tmp);if(tmp && tmp.type === Syntax.SpreadElement){if(!match("]")){throwError({}, Messages.ElementAfterSpreadElement);}}else if(!(match("]") || matchKeyword("for") || matchKeyword("if"))){expect(",");possiblecomprehension = false;}}}expect("]");if(filter && !blocks.length){throwError({}, Messages.ComprehensionRequiresBlock);}if(blocks.length){if(elements.length !== 1){throwError({}, Messages.ComprehensionError);}return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));}return markerApply(marker, delegate.createArrayExpression(elements));}function parsePropertyFunction(options){var previousStrict, previousYieldAllowed, params, defaults, body, marker=markerCreate();previousStrict = strict;previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = options.generator;params = options.params || [];defaults = options.defaults || [];body = parseConciseBody();if(options.name && strict && isRestrictedWord(params[0].name)){throwErrorTolerant(options.name, Messages.StrictParamName);}strict = previousStrict;state.yieldAllowed = previousYieldAllowed;return markerApply(marker, delegate.createFunctionExpression(null, params, defaults, body, options.rest || null, options.generator, body.type !== Syntax.BlockStatement));}function parsePropertyMethodFunction(options){var previousStrict, tmp, method;previousStrict = strict;strict = true;tmp = parseParams();if(tmp.stricted){throwErrorTolerant(tmp.stricted, tmp.message);}method = parsePropertyFunction({params:tmp.params, defaults:tmp.defaults, rest:tmp.rest, generator:options.generator});strict = previousStrict;return method;}function parseObjectPropertyKey(){var marker=markerCreate(), token=lex(), propertyKey, result;if(token.type === Token.StringLiteral || token.type === Token.NumericLiteral){if(strict && token.octal){throwErrorTolerant(token, Messages.StrictOctalLiteral);}return markerApply(marker, delegate.createLiteral(token));}if(token.type === Token.Punctuator && token.value === "["){marker = markerCreate();propertyKey = parseAssignmentExpression();result = markerApply(marker, propertyKey);expect("]");return result;}return markerApply(marker, delegate.createIdentifier(token.value));}function parseObjectProperty(){var token, key, id, value, param, expr, computed, marker=markerCreate();token = lookahead;computed = token.value === "[";if(token.type === Token.Identifier || computed){id = parseObjectPropertyKey();if(token.value === "get" && !(match(":") || match("("))){computed = lookahead.value === "[";key = parseObjectPropertyKey();expect("(");expect(")");return markerApply(marker, delegate.createProperty("get", key, parsePropertyFunction({generator:false}), false, false, computed));}if(token.value === "set" && !(match(":") || match("("))){computed = lookahead.value === "[";key = parseObjectPropertyKey();expect("(");token = lookahead;param = [parseVariableIdentifier()];expect(")");return markerApply(marker, delegate.createProperty("set", key, parsePropertyFunction({params:param, generator:false, name:token}), false, false, computed));}if(match(":")){lex();return markerApply(marker, delegate.createProperty("init", id, parseAssignmentExpression(), false, false, computed));}if(match("(")){return markerApply(marker, delegate.createProperty("init", id, parsePropertyMethodFunction({generator:false}), true, false, computed));}if(computed){throwUnexpected(lookahead);}return markerApply(marker, delegate.createProperty("init", id, id, false, true, false));}if(token.type === Token.EOF || token.type === Token.Punctuator){if(!match("*")){throwUnexpected(token);}lex();computed = lookahead.type === Token.Punctuator && lookahead.value === "[";id = parseObjectPropertyKey();if(!match("(")){throwUnexpected(lex());}return markerApply(marker, delegate.createProperty("init", id, parsePropertyMethodFunction({generator:true}), true, false, computed));}key = parseObjectPropertyKey();if(match(":")){lex();return markerApply(marker, delegate.createProperty("init", key, parseAssignmentExpression(), false, false, false));}if(match("(")){return markerApply(marker, delegate.createProperty("init", key, parsePropertyMethodFunction({generator:false}), true, false, false));}throwUnexpected(lex());}function parseObjectInitialiser(){var properties=[], property, name, key, kind, map={}, toString=String, marker=markerCreate();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;key = "$" + name;if(Object.prototype.hasOwnProperty.call(map, key)){if(map[key] === 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[key] & kind){throwErrorTolerant({}, Messages.AccessorGetSet);}}map[key] |= kind;}else {map[key] = kind;}properties.push(property);if(!match("}")){expect(",");}}expect("}");return markerApply(marker, delegate.createObjectExpression(properties));}function parseTemplateElement(option){var marker=markerCreate(), token=scanTemplateElement(option);if(strict && token.octal){throwError(token, Messages.StrictOctalLiteral);}return markerApply(marker, delegate.createTemplateElement({raw:token.value.raw, cooked:token.value.cooked}, token.tail));}function parseTemplateLiteral(){var quasi, quasis, expressions, marker=markerCreate();quasi = parseTemplateElement({head:true});quasis = [quasi];expressions = [];while(!quasi.tail) {expressions.push(parseExpression());quasi = parseTemplateElement({head:false});quasis.push(quasi);}return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));}function parseGroupExpression(){var expr;expect("(");++state.parenthesizedCount;expr = parseExpression();expect(")");return expr;}function parsePrimaryExpression(){var marker, type, token, expr;type = lookahead.type;if(type === Token.Identifier){marker = markerCreate();return markerApply(marker, delegate.createIdentifier(lex().value));}if(type === Token.StringLiteral || type === Token.NumericLiteral){if(strict && lookahead.octal){throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);}marker = markerCreate();return markerApply(marker, delegate.createLiteral(lex()));}if(type === Token.Keyword){if(matchKeyword("this")){marker = markerCreate();lex();return markerApply(marker, delegate.createThisExpression());}if(matchKeyword("function")){return parseFunctionExpression();}if(matchKeyword("class")){return parseClassExpression();}if(matchKeyword("super")){marker = markerCreate();lex();return markerApply(marker, delegate.createIdentifier("super"));}}if(type === Token.BooleanLiteral){marker = markerCreate();token = lex();token.value = token.value === "true";return markerApply(marker, delegate.createLiteral(token));}if(type === Token.NullLiteral){marker = markerCreate();token = lex();token.value = null;return markerApply(marker, delegate.createLiteral(token));}if(match("[")){return parseArrayInitialiser();}if(match("{")){return parseObjectInitialiser();}if(match("(")){return parseGroupExpression();}if(match("/") || match("/=")){marker = markerCreate();return markerApply(marker, delegate.createLiteral(scanRegExp()));}if(type === Token.Template){return parseTemplateLiteral();}throwUnexpected(lex());}function parseArguments(){var args=[], arg;expect("(");if(!match(")")){while(index < length) {arg = parseSpreadOrAssignmentExpression();args.push(arg);if(match(")")){break;}else if(arg.type === Syntax.SpreadElement){throwError({}, Messages.ElementAfterSpreadElement);}expect(",");}}expect(")");return args;}function parseSpreadOrAssignmentExpression(){if(match("...")){var marker=markerCreate();lex();return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));}return parseAssignmentExpression();}function parseNonComputedProperty(){var marker=markerCreate(), token=lex();if(!isIdentifierName(token)){throwUnexpected(token);}return markerApply(marker, delegate.createIdentifier(token.value));}function parseNonComputedMember(){expect(".");return parseNonComputedProperty();}function parseComputedMember(){var expr;expect("[");expr = parseExpression();expect("]");return expr;}function parseNewExpression(){var callee, args, marker=markerCreate();expectKeyword("new");callee = parseLeftHandSideExpression();args = match("(")?parseArguments():[];return markerApply(marker, delegate.createNewExpression(callee, args));}function parseLeftHandSideExpressionAllowCall(){var expr, args, marker=markerCreate();expr = matchKeyword("new")?parseNewExpression():parsePrimaryExpression();while(match(".") || match("[") || match("(") || lookahead.type === Token.Template) {if(match("(")){args = parseArguments();expr = markerApply(marker, delegate.createCallExpression(expr, args));}else if(match("[")){expr = markerApply(marker, delegate.createMemberExpression("[", expr, parseComputedMember()));}else if(match(".")){expr = markerApply(marker, delegate.createMemberExpression(".", expr, parseNonComputedMember()));}else {expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));}}return expr;}function parseLeftHandSideExpression(){var expr, marker=markerCreate();expr = matchKeyword("new")?parseNewExpression():parsePrimaryExpression();while(match(".") || match("[") || lookahead.type === Token.Template) {if(match("[")){expr = markerApply(marker, delegate.createMemberExpression("[", expr, parseComputedMember()));}else if(match(".")){expr = markerApply(marker, delegate.createMemberExpression(".", expr, parseNonComputedMember()));}else {expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));}}return expr;}function parsePostfixExpression(){var marker=markerCreate(), expr=parseLeftHandSideExpressionAllowCall(), token;if(lookahead.type !== Token.Punctuator){return expr;}if((match("++") || match("--")) && !peekLineTerminator()){if(strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)){throwErrorTolerant({}, Messages.StrictLHSPostfix);}if(!isLeftHandSide(expr)){throwError({}, Messages.InvalidLHSInAssignment);}token = lex();expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));}return expr;}function parseUnaryExpression(){var marker, token, expr;if(lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword){return parsePostfixExpression();}if(match("++") || match("--")){marker = markerCreate();token = lex();expr = parseUnaryExpression();if(strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)){throwErrorTolerant({}, Messages.StrictLHSPrefix);}if(!isLeftHandSide(expr)){throwError({}, Messages.InvalidLHSInAssignment);}return markerApply(marker, delegate.createUnaryExpression(token.value, expr));}if(match("+") || match("-") || match("~") || match("!")){marker = markerCreate();token = lex();expr = parseUnaryExpression();return markerApply(marker, delegate.createUnaryExpression(token.value, expr));}if(matchKeyword("delete") || matchKeyword("void") || matchKeyword("typeof")){marker = markerCreate();token = lex();expr = parseUnaryExpression();expr = markerApply(marker, 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;}function parseBinaryExpression(){var expr, token, prec, previousAllowIn, stack, right, operator, left, i, marker, markers;previousAllowIn = state.allowIn;state.allowIn = true;marker = markerCreate();left = parseUnaryExpression();token = lookahead;prec = binaryPrecedence(token, previousAllowIn);if(prec === 0){return left;}token.prec = prec;lex();markers = [marker, markerCreate()];right = parseUnaryExpression();stack = [left, token, right];while((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {while(stack.length > 2 && prec <= stack[stack.length - 2].prec) {right = stack.pop();operator = stack.pop().value;left = stack.pop();expr = delegate.createBinaryExpression(operator, left, right);markers.pop();marker = markers.pop();markerApply(marker, expr);stack.push(expr);markers.push(marker);}token = lex();token.prec = prec;stack.push(token);markers.push(markerCreate());expr = parseUnaryExpression();stack.push(expr);}state.allowIn = previousAllowIn;i = stack.length - 1;expr = stack[i];markers.pop();while(i > 1) {expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);i -= 2;marker = markers.pop();markerApply(marker, expr);}return expr;}function parseConditionalExpression(){var expr, previousAllowIn, consequent, alternate, marker=markerCreate();expr = parseBinaryExpression();if(match("?")){lex();previousAllowIn = state.allowIn;state.allowIn = true;consequent = parseAssignmentExpression();state.allowIn = previousAllowIn;expect(":");alternate = parseAssignmentExpression();expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));}return expr;}function reinterpretAsAssignmentBindingPattern(expr){var i, len, property, element;if(expr.type === Syntax.ObjectExpression){expr.type = Syntax.ObjectPattern;for(i = 0, len = expr.properties.length; i < len; i += 1) {property = expr.properties[i];if(property.kind !== "init"){throwError({}, Messages.InvalidLHSInAssignment);}reinterpretAsAssignmentBindingPattern(property.value);}}else if(expr.type === Syntax.ArrayExpression){expr.type = Syntax.ArrayPattern;for(i = 0, len = expr.elements.length; i < len; i += 1) {element = expr.elements[i];if(element){reinterpretAsAssignmentBindingPattern(element);}}}else if(expr.type === Syntax.Identifier){if(isRestrictedWord(expr.name)){throwError({}, Messages.InvalidLHSInAssignment);}}else if(expr.type === Syntax.SpreadElement){reinterpretAsAssignmentBindingPattern(expr.argument);if(expr.argument.type === Syntax.ObjectPattern){throwError({}, Messages.ObjectPatternAsSpread);}}else {if(expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression){throwError({}, Messages.InvalidLHSInAssignment);}}}function reinterpretAsDestructuredParameter(options, expr){var i, len, property, element;if(expr.type === Syntax.ObjectExpression){expr.type = Syntax.ObjectPattern;for(i = 0, len = expr.properties.length; i < len; i += 1) {property = expr.properties[i];if(property.kind !== "init"){throwError({}, Messages.InvalidLHSInFormalsList);}reinterpretAsDestructuredParameter(options, property.value);}}else if(expr.type === Syntax.ArrayExpression){expr.type = Syntax.ArrayPattern;for(i = 0, len = expr.elements.length; i < len; i += 1) {element = expr.elements[i];if(element){reinterpretAsDestructuredParameter(options, element);}}}else if(expr.type === Syntax.Identifier){validateParam(options, expr, expr.name);}else {if(expr.type !== Syntax.MemberExpression){throwError({}, Messages.InvalidLHSInFormalsList);}}}function reinterpretAsCoverFormalsList(expressions){var i, len, param, params, defaults, defaultCount, options, rest;params = [];defaults = [];defaultCount = 0;rest = null;options = {paramSet:{}};for(i = 0, len = expressions.length; i < len; i += 1) {param = expressions[i];if(param.type === Syntax.Identifier){params.push(param);defaults.push(null);validateParam(options, param, param.name);}else if(param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression){reinterpretAsDestructuredParameter(options, param);params.push(param);defaults.push(null);}else if(param.type === Syntax.SpreadElement){assert(i === len - 1, "It is guaranteed that SpreadElement is last element by parseExpression");reinterpretAsDestructuredParameter(options, param.argument);rest = param.argument;}else if(param.type === Syntax.AssignmentExpression){params.push(param.left);defaults.push(param.right);++defaultCount;validateParam(options, param.left, param.left.name);}else {return null;}}if(options.message === Messages.StrictParamDupe){throwError(strict?options.stricted:options.firstRestricted, options.message);}if(defaultCount === 0){defaults = [];}return {params:params, defaults:defaults, rest:rest, stricted:options.stricted, firstRestricted:options.firstRestricted, message:options.message};}function parseArrowFunctionExpression(options, marker){var previousStrict, previousYieldAllowed, body;expect("=>");previousStrict = strict;previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = false;body = parseConciseBody();if(strict && options.firstRestricted){throwError(options.firstRestricted, options.message);}if(strict && options.stricted){throwErrorTolerant(options.stricted, options.message);}strict = previousStrict;state.yieldAllowed = previousYieldAllowed;return markerApply(marker, delegate.createArrowFunctionExpression(options.params, options.defaults, body, options.rest, body.type !== Syntax.BlockStatement));}function parseAssignmentExpression(){var marker, expr, token, params, oldParenthesizedCount;if(state.yieldAllowed && matchContextualKeyword("yield") || strict && matchKeyword("yield")){return parseYieldExpression();}oldParenthesizedCount = state.parenthesizedCount;marker = markerCreate();if(match("(")){token = lookahead2();if(token.type === Token.Punctuator && token.value === ")" || token.value === "..."){params = parseParams();if(!match("=>")){throwUnexpected(lex());}return parseArrowFunctionExpression(params, marker);}}token = lookahead;expr = parseConditionalExpression();if(match("=>") && (state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === oldParenthesizedCount + 1)){if(expr.type === Syntax.Identifier){params = reinterpretAsCoverFormalsList([expr]);}else if(expr.type === Syntax.SequenceExpression){params = reinterpretAsCoverFormalsList(expr.expressions);}if(params){return parseArrowFunctionExpression(params, marker);}}if(matchAssign()){if(strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)){throwErrorTolerant(token, Messages.StrictLHSAssignment);}if(match("=") && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)){reinterpretAsAssignmentBindingPattern(expr);}else if(!isLeftHandSide(expr)){throwError({}, Messages.InvalidLHSInAssignment);}expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));}return expr;}function parseExpression(){var marker, expr, expressions, sequence, coverFormalsList, spreadFound, oldParenthesizedCount;oldParenthesizedCount = state.parenthesizedCount;marker = markerCreate();expr = parseAssignmentExpression();expressions = [expr];if(match(",")){while(index < length) {if(!match(",")){break;}lex();expr = parseSpreadOrAssignmentExpression();expressions.push(expr);if(expr.type === Syntax.SpreadElement){spreadFound = true;if(!match(")")){throwError({}, Messages.ElementAfterSpreadElement);}break;}}sequence = markerApply(marker, delegate.createSequenceExpression(expressions));}if(match("=>")){if(state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === oldParenthesizedCount + 1){expr = expr.type === Syntax.SequenceExpression?expr.expressions:expressions;coverFormalsList = reinterpretAsCoverFormalsList(expr);if(coverFormalsList){return parseArrowFunctionExpression(coverFormalsList, marker);}}throwUnexpected(lex());}if(spreadFound && lookahead2().value !== "=>"){throwError({}, Messages.IllegalSpread);}return sequence || expr;}function parseStatementList(){var list=[], statement;while(index < length) {if(match("}")){break;}statement = parseSourceElement();if(typeof statement === "undefined"){break;}list.push(statement);}return list;}function parseBlock(){var block, marker=markerCreate();expect("{");block = parseStatementList();expect("}");return markerApply(marker, delegate.createBlockStatement(block));}function parseVariableIdentifier(){var marker=markerCreate(), token=lex();if(token.type !== Token.Identifier){throwUnexpected(token);}return markerApply(marker, delegate.createIdentifier(token.value));}function parseVariableDeclaration(kind){var id, marker=markerCreate(), init=null;if(match("{")){id = parseObjectInitialiser();reinterpretAsAssignmentBindingPattern(id);}else if(match("[")){id = parseArrayInitialiser();reinterpretAsAssignmentBindingPattern(id);}else {id = state.allowKeyword?parseNonComputedProperty():parseVariableIdentifier();if(strict && isRestrictedWord(id.name)){throwErrorTolerant({}, Messages.StrictVarName);}}if(kind === "const"){if(!match("=")){throwError({}, Messages.NoUnintializedConst);}expect("=");init = parseAssignmentExpression();}else if(match("=")){lex();init = parseAssignmentExpression();}return markerApply(marker, delegate.createVariableDeclarator(id, init));}function parseVariableDeclarationList(kind){var list=[];do{list.push(parseVariableDeclaration(kind));if(!match(",")){break;}lex();}while(index < length);return list;}function parseVariableStatement(){var declarations, marker=markerCreate();expectKeyword("var");declarations = parseVariableDeclarationList();consumeSemicolon();return markerApply(marker, delegate.createVariableDeclaration(declarations, "var"));}function parseConstLetDeclaration(kind){var declarations, marker=markerCreate();expectKeyword(kind);declarations = parseVariableDeclarationList(kind);consumeSemicolon();return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));}function parseModuleDeclaration(){var id, src, body, marker=markerCreate();lex();if(peekLineTerminator()){throwError({}, Messages.NewlineAfterModule);}switch(lookahead.type){case Token.StringLiteral:id = parsePrimaryExpression();body = parseModuleBlock();src = null;break;case Token.Identifier:id = parseVariableIdentifier();body = null;if(!matchContextualKeyword("from")){throwUnexpected(lex());}lex();src = parsePrimaryExpression();if(src.type !== Syntax.Literal){throwError({}, Messages.InvalidModuleSpecifier);}break;}consumeSemicolon();return markerApply(marker, delegate.createModuleDeclaration(id, src, body));}function parseExportBatchSpecifier(){var marker=markerCreate();expect("*");return markerApply(marker, delegate.createExportBatchSpecifier());}function parseExportSpecifier(){var id, name=null, marker=markerCreate();id = parseVariableIdentifier();if(matchContextualKeyword("as")){lex();name = parseNonComputedProperty();}return markerApply(marker, delegate.createExportSpecifier(id, name));}function parseExportDeclaration(){var previousAllowKeyword, decl, def, src, specifiers, marker=markerCreate();expectKeyword("export");if(lookahead.type === Token.Keyword){switch(lookahead.value){case "let":case "const":case "var":case "class":case "function":return markerApply(marker, delegate.createExportDeclaration(parseSourceElement(), null, null));}}if(isIdentifierName(lookahead)){previousAllowKeyword = state.allowKeyword;state.allowKeyword = true;decl = parseVariableDeclarationList("let");state.allowKeyword = previousAllowKeyword;return markerApply(marker, delegate.createExportDeclaration(decl, null, null));}specifiers = [];src = null;if(match("*")){specifiers.push(parseExportBatchSpecifier());}else {expect("{");do{specifiers.push(parseExportSpecifier());}while(match(",") && lex());expect("}");}if(matchContextualKeyword("from")){lex();src = parsePrimaryExpression();if(src.type !== Syntax.Literal){throwError({}, Messages.InvalidModuleSpecifier);}}consumeSemicolon();return markerApply(marker, delegate.createExportDeclaration(null, specifiers, src));}function parseImportDeclaration(){var specifiers, kind, src, marker=markerCreate();expectKeyword("import");specifiers = [];if(isIdentifierName(lookahead)){kind = "default";specifiers.push(parseImportSpecifier());if(!matchContextualKeyword("from")){throwError({}, Messages.NoFromAfterImport);}lex();}else if(match("{")){kind = "named";lex();do{specifiers.push(parseImportSpecifier());}while(match(",") && lex());expect("}");if(!matchContextualKeyword("from")){throwError({}, Messages.NoFromAfterImport);}lex();}src = parsePrimaryExpression();if(src.type !== Syntax.Literal){throwError({}, Messages.InvalidModuleSpecifier);}consumeSemicolon();return markerApply(marker, delegate.createImportDeclaration(specifiers, kind, src));}function parseImportSpecifier(){var id, name=null, marker=markerCreate();id = parseNonComputedProperty();if(matchContextualKeyword("as")){lex();name = parseVariableIdentifier();}return markerApply(marker, delegate.createImportSpecifier(id, name));}function parseEmptyStatement(){var marker=markerCreate();expect(";");return markerApply(marker, delegate.createEmptyStatement());}function parseExpressionStatement(){var marker=markerCreate(), expr=parseExpression();consumeSemicolon();return markerApply(marker, delegate.createExpressionStatement(expr));}function parseIfStatement(){var test, consequent, alternate, marker=markerCreate();expectKeyword("if");expect("(");test = parseExpression();expect(")");consequent = parseStatement();if(matchKeyword("else")){lex();alternate = parseStatement();}else {alternate = null;}return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));}function parseDoWhileStatement(){var body, test, oldInIteration, marker=markerCreate();expectKeyword("do");oldInIteration = state.inIteration;state.inIteration = true;body = parseStatement();state.inIteration = oldInIteration;expectKeyword("while");expect("(");test = parseExpression();expect(")");if(match(";")){lex();}return markerApply(marker, delegate.createDoWhileStatement(body, test));}function parseWhileStatement(){var test, body, oldInIteration, marker=markerCreate();expectKeyword("while");expect("(");test = parseExpression();expect(")");oldInIteration = state.inIteration;state.inIteration = true;body = parseStatement();state.inIteration = oldInIteration;return markerApply(marker, delegate.createWhileStatement(test, body));}function parseForVariableDeclaration(){var marker=markerCreate(), token=lex(), declarations=parseVariableDeclarationList();return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));}function parseForStatement(opts){var init, test, update, left, right, body, operator, oldInIteration, marker=markerCreate();init = test = update = null;expectKeyword("for");if(matchContextualKeyword("each")){throwError({}, Messages.EachNotAllowed);}expect("(");if(match(";")){lex();}else {if(matchKeyword("var") || matchKeyword("let") || matchKeyword("const")){state.allowIn = false;init = parseForVariableDeclaration();state.allowIn = true;if(init.declarations.length === 1){if(matchKeyword("in") || matchContextualKeyword("of")){operator = lookahead;if(!((operator.value === "in" || init.kind !== "var") && init.declarations[0].init)){lex();left = init;right = parseExpression();init = null;}}}}else {state.allowIn = false;init = parseExpression();state.allowIn = true;if(matchContextualKeyword("of")){operator = lex();left = init;right = parseExpression();init = null;}else if(matchKeyword("in")){if(!isAssignableLeftHandSide(init)){throwError({}, Messages.InvalidLHSInForIn);}operator = lex();left = init;right = parseExpression();init = null;}}if(typeof left === "undefined"){expect(";");}}if(typeof left === "undefined"){if(!match(";")){test = parseExpression();}expect(";");if(!match(")")){update = parseExpression();}}expect(")");oldInIteration = state.inIteration;state.inIteration = true;if(!(opts !== undefined && opts.ignoreBody)){body = parseStatement();}state.inIteration = oldInIteration;if(typeof left === "undefined"){return markerApply(marker, delegate.createForStatement(init, test, update, body));}if(operator.value === "in"){return markerApply(marker, delegate.createForInStatement(left, right, body));}return markerApply(marker, delegate.createForOfStatement(left, right, body));}function parseContinueStatement(){var label=null, key, marker=markerCreate();expectKeyword("continue");if(source.charCodeAt(index) === 59){lex();if(!state.inIteration){throwError({}, Messages.IllegalContinue);}return markerApply(marker, delegate.createContinueStatement(null));}if(peekLineTerminator()){if(!state.inIteration){throwError({}, Messages.IllegalContinue);}return markerApply(marker, delegate.createContinueStatement(null));}if(lookahead.type === Token.Identifier){label = parseVariableIdentifier();key = "$" + label.name;if(!Object.prototype.hasOwnProperty.call(state.labelSet, key)){throwError({}, Messages.UnknownLabel, label.name);}}consumeSemicolon();if(label === null && !state.inIteration){throwError({}, Messages.IllegalContinue);}return markerApply(marker, delegate.createContinueStatement(label));}function parseBreakStatement(){var label=null, key, marker=markerCreate();expectKeyword("break");if(source.charCodeAt(index) === 59){lex();if(!(state.inIteration || state.inSwitch)){throwError({}, Messages.IllegalBreak);}return markerApply(marker, delegate.createBreakStatement(null));}if(peekLineTerminator()){if(!(state.inIteration || state.inSwitch)){throwError({}, Messages.IllegalBreak);}return markerApply(marker, delegate.createBreakStatement(null));}if(lookahead.type === Token.Identifier){label = parseVariableIdentifier();key = "$" + label.name;if(!Object.prototype.hasOwnProperty.call(state.labelSet, key)){throwError({}, Messages.UnknownLabel, label.name);}}consumeSemicolon();if(label === null && !(state.inIteration || state.inSwitch)){throwError({}, Messages.IllegalBreak);}return markerApply(marker, delegate.createBreakStatement(label));}function parseReturnStatement(){var argument=null, marker=markerCreate();expectKeyword("return");if(!state.inFunctionBody){throwErrorTolerant({}, Messages.IllegalReturn);}if(source.charCodeAt(index) === 32){if(isIdentifierStart(source.charCodeAt(index + 1))){argument = parseExpression();consumeSemicolon();return markerApply(marker, delegate.createReturnStatement(argument));}}if(peekLineTerminator()){return markerApply(marker, delegate.createReturnStatement(null));}if(!match(";")){if(!match("}") && lookahead.type !== Token.EOF){argument = parseExpression();}}consumeSemicolon();return markerApply(marker, delegate.createReturnStatement(argument));}function parseWithStatement(){var object, body, marker=markerCreate();if(strict){throwErrorTolerant({}, Messages.StrictModeWith);}expectKeyword("with");expect("(");object = parseExpression();expect(")");body = parseStatement();return markerApply(marker, delegate.createWithStatement(object, body));}function parseSwitchCase(){var test, consequent=[], sourceElement, marker=markerCreate();if(matchKeyword("default")){lex();test = null;}else {expectKeyword("case");test = parseExpression();}expect(":");while(index < length) {if(match("}") || matchKeyword("default") || matchKeyword("case")){break;}sourceElement = parseSourceElement();if(typeof sourceElement === "undefined"){break;}consequent.push(sourceElement);}return markerApply(marker, delegate.createSwitchCase(test, consequent));}function parseSwitchStatement(){var discriminant, cases, clause, oldInSwitch, defaultFound, marker=markerCreate();expectKeyword("switch");expect("(");discriminant = parseExpression();expect(")");expect("{");cases = [];if(match("}")){lex();return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));}oldInSwitch = state.inSwitch;state.inSwitch = true;defaultFound = false;while(index < length) {if(match("}")){break;}clause = parseSwitchCase();if(clause.test === null){if(defaultFound){throwError({}, Messages.MultipleDefaultsInSwitch);}defaultFound = true;}cases.push(clause);}state.inSwitch = oldInSwitch;expect("}");return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));}function parseThrowStatement(){var argument, marker=markerCreate();expectKeyword("throw");if(peekLineTerminator()){throwError({}, Messages.NewlineAfterThrow);}argument = parseExpression();consumeSemicolon();return markerApply(marker, delegate.createThrowStatement(argument));}function parseCatchClause(){var param, body, marker=markerCreate();expectKeyword("catch");expect("(");if(match(")")){throwUnexpected(lookahead);}param = parseExpression();if(strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)){throwErrorTolerant({}, Messages.StrictCatchVariable);}expect(")");body = parseBlock();return markerApply(marker, delegate.createCatchClause(param, body));}function parseTryStatement(){var block, handlers=[], finalizer=null, marker=markerCreate();expectKeyword("try");block = parseBlock();if(matchKeyword("catch")){handlers.push(parseCatchClause());}if(matchKeyword("finally")){lex();finalizer = parseBlock();}if(handlers.length === 0 && !finalizer){throwError({}, Messages.NoCatchOrFinally);}return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));}function parseDebuggerStatement(){var marker=markerCreate();expectKeyword("debugger");consumeSemicolon();return markerApply(marker, delegate.createDebuggerStatement());}function parseStatement(){var type=lookahead.type, marker, expr, labeledBody, key;if(type === Token.EOF){throwUnexpected(lookahead);}if(type === Token.Punctuator){switch(lookahead.value){case ";":return parseEmptyStatement();case "{":return parseBlock();case "(":return parseExpressionStatement();default:break;}}if(type === Token.Keyword){switch(lookahead.value){case "break":return parseBreakStatement();case "continue":return parseContinueStatement();case "debugger":return parseDebuggerStatement();case "do":return parseDoWhileStatement();case "for":return parseForStatement();case "function":return parseFunctionDeclaration();case "class":return parseClassDeclaration();case "if":return parseIfStatement();case "return":return parseReturnStatement();case "switch":return parseSwitchStatement();case "throw":return parseThrowStatement();case "try":return parseTryStatement();case "var":return parseVariableStatement();case "while":return parseWhileStatement();case "with":return parseWithStatement();default:break;}}marker = markerCreate();expr = parseExpression();if(expr.type === Syntax.Identifier && match(":")){lex();key = "$" + expr.name;if(Object.prototype.hasOwnProperty.call(state.labelSet, key)){throwError({}, Messages.Redeclaration, "Label", expr.name);}state.labelSet[key] = true;labeledBody = parseStatement();delete state.labelSet[key];return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));}consumeSemicolon();return markerApply(marker, delegate.createExpressionStatement(expr));}function parseConciseBody(){if(match("{")){return parseFunctionSourceElements();}return parseAssignmentExpression();}function parseFunctionSourceElements(){var sourceElement, sourceElements=[], token, directive, firstRestricted, oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount, marker=markerCreate();expect("{");while(index < length) {if(lookahead.type !== Token.StringLiteral){break;}token = lookahead;sourceElement = parseSourceElement();sourceElements.push(sourceElement);if(sourceElement.expression.type !== Syntax.Literal){break;}directive = source.slice(token.range[0] + 1, token.range[1] - 1);if(directive === "use strict"){strict = true;if(firstRestricted){throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);}}else {if(!firstRestricted && token.octal){firstRestricted = token;}}}oldLabelSet = state.labelSet;oldInIteration = state.inIteration;oldInSwitch = state.inSwitch;oldInFunctionBody = state.inFunctionBody;oldParenthesizedCount = state.parenthesizedCount;state.labelSet = {};state.inIteration = false;state.inSwitch = false;state.inFunctionBody = true;state.parenthesizedCount = 0;while(index < length) {if(match("}")){break;}sourceElement = parseSourceElement();if(typeof sourceElement === "undefined"){break;}sourceElements.push(sourceElement);}expect("}");state.labelSet = oldLabelSet;state.inIteration = oldInIteration;state.inSwitch = oldInSwitch;state.inFunctionBody = oldInFunctionBody;state.parenthesizedCount = oldParenthesizedCount;return markerApply(marker, delegate.createBlockStatement(sourceElements));}function validateParam(options, param, name){var key="$" + name;if(strict){if(isRestrictedWord(name)){options.stricted = param;options.message = Messages.StrictParamName;}if(Object.prototype.hasOwnProperty.call(options.paramSet, key)){options.stricted = param;options.message = Messages.StrictParamDupe;}}else if(!options.firstRestricted){if(isRestrictedWord(name)){options.firstRestricted = param;options.message = Messages.StrictParamName;}else if(isStrictModeReservedWord(name)){options.firstRestricted = param;options.message = Messages.StrictReservedWord;}else if(Object.prototype.hasOwnProperty.call(options.paramSet, key)){options.firstRestricted = param;options.message = Messages.StrictParamDupe;}}options.paramSet[key] = true;}function parseParam(options){var token, rest, param, def;token = lookahead;if(token.value === "..."){token = lex();rest = true;}if(match("[")){param = parseArrayInitialiser();reinterpretAsDestructuredParameter(options, param);}else if(match("{")){if(rest){throwError({}, Messages.ObjectPatternAsRestParameter);}param = parseObjectInitialiser();reinterpretAsDestructuredParameter(options, param);}else {param = parseVariableIdentifier();validateParam(options, token, token.value);}if(match("=")){if(rest){throwErrorTolerant(lookahead, Messages.DefaultRestParameter);}lex();def = parseAssignmentExpression();++options.defaultCount;}if(rest){if(!match(")")){throwError({}, Messages.ParameterAfterRestParameter);}options.rest = param;return false;}options.params.push(param);options.defaults.push(def);return !match(")");}function parseParams(firstRestricted){var options, marker=markerCreate();options = {params:[], defaultCount:0, defaults:[], rest:null, firstRestricted:firstRestricted};expect("(");if(!match(")")){options.paramSet = {};while(index < length) {if(!parseParam(options)){break;}expect(",");}}expect(")");if(options.defaultCount === 0){options.defaults = [];}return markerApply(marker, options);}function parseFunctionDeclaration(){var id, body, token, tmp, firstRestricted, message, previousStrict, previousYieldAllowed, generator, marker=markerCreate();expectKeyword("function");generator = false;if(match("*")){lex();generator = true;}token = lookahead;id = parseVariableIdentifier();if(strict){if(isRestrictedWord(token.value)){throwErrorTolerant(token, Messages.StrictFunctionName);}}else {if(isRestrictedWord(token.value)){firstRestricted = token;message = Messages.StrictFunctionName;}else if(isStrictModeReservedWord(token.value)){firstRestricted = token;message = Messages.StrictReservedWord;}}tmp = parseParams(firstRestricted);firstRestricted = tmp.firstRestricted;if(tmp.message){message = tmp.message;}previousStrict = strict;previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = generator;body = parseFunctionSourceElements();if(strict && firstRestricted){throwError(firstRestricted, message);}if(strict && tmp.stricted){throwErrorTolerant(tmp.stricted, message);}strict = previousStrict;state.yieldAllowed = previousYieldAllowed;return markerApply(marker, delegate.createFunctionDeclaration(id, tmp.params, tmp.defaults, body, tmp.rest, generator, false));}function parseFunctionExpression(){var token, id=null, firstRestricted, message, tmp, body, previousStrict, previousYieldAllowed, generator, marker=markerCreate();expectKeyword("function");generator = false;if(match("*")){lex();generator = true;}if(!match("(")){token = lookahead;id = parseVariableIdentifier();if(strict){if(isRestrictedWord(token.value)){throwErrorTolerant(token, Messages.StrictFunctionName);}}else {if(isRestrictedWord(token.value)){firstRestricted = token;message = Messages.StrictFunctionName;}else if(isStrictModeReservedWord(token.value)){firstRestricted = token;message = Messages.StrictReservedWord;}}}tmp = parseParams(firstRestricted);firstRestricted = tmp.firstRestricted;if(tmp.message){message = tmp.message;}previousStrict = strict;previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = generator;body = parseFunctionSourceElements();if(strict && firstRestricted){throwError(firstRestricted, message);}if(strict && tmp.stricted){throwErrorTolerant(tmp.stricted, message);}strict = previousStrict;state.yieldAllowed = previousYieldAllowed;return markerApply(marker, delegate.createFunctionExpression(id, tmp.params, tmp.defaults, body, tmp.rest, generator, false));}function parseYieldExpression(){var yieldToken, delegateFlag, expr, marker=markerCreate();yieldToken = lex();assert(yieldToken.value === "yield", "Called parseYieldExpression with non-yield lookahead.");if(!state.yieldAllowed){throwErrorTolerant({}, Messages.IllegalYield);}delegateFlag = false;if(match("*")){lex();delegateFlag = true;}expr = parseAssignmentExpression();return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));}function parseMethodDefinition(existingPropNames){var token, key, param, propType, isValidDuplicateProp=false, marker=markerCreate();if(lookahead.value === "static"){propType = ClassPropertyType["static"];lex();}else {propType = ClassPropertyType.prototype;}if(match("*")){lex();return markerApply(marker, delegate.createMethodDefinition(propType, "", parseObjectPropertyKey(), parsePropertyMethodFunction({generator:true})));}token = lookahead;key = parseObjectPropertyKey();if(token.value === "get" && !match("(")){key = parseObjectPropertyKey();if(existingPropNames[propType].hasOwnProperty(key.name)){isValidDuplicateProp = existingPropNames[propType][key.name].get === undefined && existingPropNames[propType][key.name].data === undefined && existingPropNames[propType][key.name].set !== undefined;if(!isValidDuplicateProp){throwError(key, Messages.IllegalDuplicateClassProperty);}}else {existingPropNames[propType][key.name] = {};}existingPropNames[propType][key.name].get = true;expect("(");expect(")");return markerApply(marker, delegate.createMethodDefinition(propType, "get", key, parsePropertyFunction({generator:false})));}if(token.value === "set" && !match("(")){key = parseObjectPropertyKey();if(existingPropNames[propType].hasOwnProperty(key.name)){isValidDuplicateProp = existingPropNames[propType][key.name].set === undefined && existingPropNames[propType][key.name].data === undefined && existingPropNames[propType][key.name].get !== undefined;if(!isValidDuplicateProp){throwError(key, Messages.IllegalDuplicateClassProperty);}}else {existingPropNames[propType][key.name] = {};}existingPropNames[propType][key.name].set = true;expect("(");token = lookahead;param = [parseVariableIdentifier()];expect(")");return markerApply(marker, delegate.createMethodDefinition(propType, "set", key, parsePropertyFunction({params:param, generator:false, name:token})));}if(existingPropNames[propType].hasOwnProperty(key.name)){throwError(key, Messages.IllegalDuplicateClassProperty);}else {existingPropNames[propType][key.name] = {};}existingPropNames[propType][key.name].data = true;return markerApply(marker, delegate.createMethodDefinition(propType, "", key, parsePropertyMethodFunction({generator:false})));}function parseClassElement(existingProps){if(match(";")){lex();return;}return parseMethodDefinition(existingProps);}function parseClassBody(){var classElement, classElements=[], existingProps={}, marker=markerCreate();existingProps[ClassPropertyType["static"]] = {};existingProps[ClassPropertyType.prototype] = {};expect("{");while(index < length) {if(match("}")){break;}classElement = parseClassElement(existingProps);if(typeof classElement !== "undefined"){classElements.push(classElement);}}expect("}");return markerApply(marker, delegate.createClassBody(classElements));}function parseClassExpression(){var id, previousYieldAllowed, superClass=null, marker=markerCreate();expectKeyword("class");if(!matchKeyword("extends") && !match("{")){id = parseVariableIdentifier();}if(matchKeyword("extends")){expectKeyword("extends");previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = false;superClass = parseAssignmentExpression();state.yieldAllowed = previousYieldAllowed;}return markerApply(marker, delegate.createClassExpression(id, superClass, parseClassBody()));}function parseClassDeclaration(){var id, previousYieldAllowed, superClass=null, marker=markerCreate();expectKeyword("class");id = parseVariableIdentifier();if(matchKeyword("extends")){expectKeyword("extends");previousYieldAllowed = state.yieldAllowed;state.yieldAllowed = false;superClass = parseAssignmentExpression();state.yieldAllowed = previousYieldAllowed;}return markerApply(marker, delegate.createClassDeclaration(id, superClass, parseClassBody()));}function matchModuleDeclaration(){var id;if(matchContextualKeyword("module")){id = lookahead2();return id.type === Token.StringLiteral || id.type === Token.Identifier;}return false;}function parseSourceElement(){if(lookahead.type === Token.Keyword){switch(lookahead.value){case "const":case "let":return parseConstLetDeclaration(lookahead.value);case "function":return parseFunctionDeclaration();case "export":return parseExportDeclaration();case "import":return parseImportDeclaration();default:return parseStatement();}}if(matchModuleDeclaration()){throwError({}, Messages.NestedModule);}if(lookahead.type !== Token.EOF){return parseStatement();}}function parseProgramElement(){if(lookahead.type === Token.Keyword){switch(lookahead.value){case "export":return parseExportDeclaration();case "import":return parseImportDeclaration();}}if(matchModuleDeclaration()){return parseModuleDeclaration();}return parseSourceElement();}function parseProgramElements(){var sourceElement, sourceElements=[], token, directive, firstRestricted;while(index < length) {token = lookahead;if(token.type !== Token.StringLiteral){break;}sourceElement = parseProgramElement();sourceElements.push(sourceElement);if(sourceElement.expression.type !== Syntax.Literal){break;}directive = source.slice(token.range[0] + 1, token.range[1] - 1);if(directive === "use strict"){strict = true;if(firstRestricted){throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);}}else {if(!firstRestricted && token.octal){firstRestricted = token;}}}while(index < length) {sourceElement = parseProgramElement();if(typeof sourceElement === "undefined"){break;}sourceElements.push(sourceElement);}return sourceElements;}function parseModuleElement(){return parseSourceElement();}function parseModuleElements(){var list=[], statement;while(index < length) {if(match("}")){break;}statement = parseModuleElement();if(typeof statement === "undefined"){break;}list.push(statement);}return list;}function parseModuleBlock(){var block, marker=markerCreate();expect("{");block = parseModuleElements();expect("}");return markerApply(marker, delegate.createBlockStatement(block));}function parseProgram(){var body, marker=markerCreate();strict = false;peek();body = parseProgramElements();return markerApply(marker, delegate.createProgram(body));}function addComment(type, value, start, end, loc){var comment;assert(typeof start === "number", "Comment must have valid position");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);}function scanComment(){var comment, ch, loc, start, blockComment, lineComment;comment = "";blockComment = false;lineComment = false;while(index < length) {ch = source[index];if(lineComment){ch = source[index++];if(isLineTerminator(ch.charCodeAt(0))){loc.end = {line:lineNumber, column:index - lineStart - 1};lineComment = false;addComment("Line", comment, start, index - 1, loc);if(ch === "\r" && source[index] === "\n"){++index;}++lineNumber;lineStart = index;comment = "";}else if(index >= length){lineComment = false;comment += ch;loc.end = {line:lineNumber, column:length - lineStart};addComment("Line", comment, start, length, loc);}else {comment += ch;}}else if(blockComment){if(isLineTerminator(ch.charCodeAt(0))){if(ch === "\r" && source[index + 1] === "\n"){++index;comment += "\r\n";}else {comment += ch;}++lineNumber;++index;lineStart = index;if(index >= length){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}}else {ch = source[index++];if(index >= length){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}comment += ch;if(ch === "*"){ch = source[index];if(ch === "/"){comment = comment.substr(0, comment.length - 1);blockComment = false;++index;loc.end = {line:lineNumber, column:index - lineStart};addComment("Block", comment, start, index, loc);comment = "";}}}}else if(ch === "/"){ch = source[index + 1];if(ch === "/"){loc = {start:{line:lineNumber, column:index - lineStart}};start = index;index += 2;lineComment = true;if(index >= length){loc.end = {line:lineNumber, column:index - lineStart};lineComment = false;addComment("Line", comment, start, index, loc);}}else if(ch === "*"){start = index;index += 2;blockComment = true;loc = {start:{line:lineNumber, column:index - lineStart - 2}};if(index >= length){throwError({}, Messages.UnexpectedToken, "ILLEGAL");}}else {break;}}else if(isWhiteSpace(ch.charCodeAt(0))){++index;}else if(isLineTerminator(ch.charCodeAt(0))){++index;if(ch === "\r" && source[index] === "\n"){++index;}++lineNumber;lineStart = index;}else {break;}}}function collectToken(){var start, loc, token, range, value;skipComment();start = index;loc = {start:{line:lineNumber, column:index - lineStart}};token = extra.advance();loc.end = {line:lineNumber, column:index - lineStart};if(token.type !== Token.EOF){range = [token.range[0], token.range[1]];value = source.slice(token.range[0], token.range[1]);extra.tokens.push({type:TokenName[token.type], value:value, range:range, loc:loc});}return token;}function collectRegex(){var pos, loc, regex, token;skipComment();pos = index;loc = {start:{line:lineNumber, column:index - lineStart}};regex = extra.scanRegExp();loc.end = {line:lineNumber, column:index - lineStart};if(!extra.tokenize){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 filterTokenLocation(){var i, entry, token, tokens=[];for(i = 0; i < extra.tokens.length; ++i) {entry = extra.tokens[i];token = {type:entry.type, value:entry.value};if(extra.range){token.range = entry.range;}if(extra.loc){token.loc = entry.loc;}tokens.push(token);}extra.tokens = tokens;}function patch(){if(extra.comments){extra.skipComment = skipComment;skipComment = scanComment;}if(typeof extra.tokens !== "undefined"){extra.advance = advance;extra.scanRegExp = scanRegExp;advance = collectToken;scanRegExp = collectRegex;}}function unpatch(){if(typeof extra.skipComment === "function"){skipComment = extra.skipComment;}if(typeof extra.scanRegExp === "function"){advance = extra.advance;scanRegExp = extra.scanRegExp;}}function extend(object, properties){var entry, result={};for(entry in object) {if(object.hasOwnProperty(entry)){result[entry] = object[entry];}}for(entry in properties) {if(properties.hasOwnProperty(entry)){result[entry] = properties[entry];}}return result;}function tokenize(code, options){var toString, token, tokens;toString = String;if(typeof code !== "string" && !(code instanceof String)){code = toString(code);}delegate = SyntaxTreeDelegate;source = code;index = 0;lineNumber = source.length > 0?1:0;lineStart = 0;length = source.length;lookahead = null;state = {allowKeyword:true, allowIn:true, labelSet:{}, inFunctionBody:false, inIteration:false, inSwitch:false, lastCommentStart:-1};extra = {};options = options || {};options.tokens = true;extra.tokens = [];extra.tokenize = true;extra.openParenToken = -1;extra.openCurlyToken = -1;extra.range = typeof options.range === "boolean" && options.range;extra.loc = typeof options.loc === "boolean" && options.loc;if(typeof options.comment === "boolean" && options.comment){extra.comments = [];}if(typeof options.tolerant === "boolean" && options.tolerant){extra.errors = [];}if(length > 0){if(typeof source[0] === "undefined"){if(code instanceof String){source = code.valueOf();}}}patch();try{peek();if(lookahead.type === Token.EOF){return extra.tokens;}token = lex();while(lookahead.type !== Token.EOF) {try{token = lex();}catch(lexError) {token = lookahead;if(extra.errors){extra.errors.push(lexError);break;}else {throw lexError;}}}filterTokenLocation();tokens = extra.tokens;if(typeof extra.comments !== "undefined"){tokens.comments = extra.comments;}if(typeof extra.errors !== "undefined"){tokens.errors = extra.errors;}}catch(e) {throw e;}finally {unpatch();extra = {};}return tokens;}function parse(code, options){var program, toString;toString = String;if(typeof code !== "string" && !(code instanceof String)){code = toString(code);}delegate = SyntaxTreeDelegate;source = code;index = 0;lineNumber = source.length > 0?1:0;lineStart = 0;length = source.length;lookahead = null;state = {allowKeyword:false, allowIn:true, labelSet:{}, parenthesizedCount:0, inFunctionBody:false, inIteration:false, inSwitch:false, lastCommentStart:-1, yieldAllowed:false};extra = {};if(typeof options !== "undefined"){extra.range = typeof options.range === "boolean" && options.range;extra.loc = typeof options.loc === "boolean" && options.loc;if(extra.loc && options.source !== null && options.source !== undefined){delegate = extend(delegate, {postProcess:function postProcess(node){node.loc.source = toString(options.source);return node;}});}if(typeof options.tokens === "boolean" && options.tokens){extra.tokens = [];}if(typeof options.comment === "boolean" && options.comment){extra.comments = [];}if(typeof options.tolerant === "boolean" && options.tolerant){extra.errors = [];}}if(length > 0){if(typeof source[0] === "undefined"){if(code instanceof String){source = code.valueOf();}}}patch();try{program = parseProgram();if(typeof extra.comments !== "undefined"){program.comments = extra.comments;}if(typeof extra.tokens !== "undefined"){filterTokenLocation();program.tokens = extra.tokens;}if(typeof extra.errors !== "undefined"){program.errors = extra.errors;}}catch(e) {throw e;}finally {unpatch();extra = {};}return program;}exports.version = "1.1.0-dev-harmony";exports.tokenize = tokenize;exports.parse = parse;exports.Syntax = (function(){var name, types={};if(typeof Object.create === "function"){types = Object.create(null);}for(name in Syntax) {if(Syntax.hasOwnProperty(name)){types[name] = Syntax[name];}}if(typeof Object.freeze === "function"){Object.freeze(types);}return types;})();}); |