diff options
Diffstat (limited to 'deps/npm/node_modules/readable-stream/node_modules/inline-process-browser/node_modules/falafel/node_modules/acorn/dist/acorn.js')
| -rw-r--r-- | deps/npm/node_modules/readable-stream/node_modules/inline-process-browser/node_modules/falafel/node_modules/acorn/dist/acorn.js | 4014 |
1 files changed, 4014 insertions, 0 deletions
diff --git a/deps/npm/node_modules/readable-stream/node_modules/inline-process-browser/node_modules/falafel/node_modules/acorn/dist/acorn.js b/deps/npm/node_modules/readable-stream/node_modules/inline-process-browser/node_modules/falafel/node_modules/acorn/dist/acorn.js new file mode 100644 index 0000000000..1f1b6f2432 --- /dev/null +++ b/deps/npm/node_modules/readable-stream/node_modules/inline-process-browser/node_modules/falafel/node_modules/acorn/dist/acorn.js @@ -0,0 +1,4014 @@ +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.acorn = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){ + + +// The main exported interface (under `self.acorn` when in the +// browser) is a `parse` function that takes a code string and +// returns an abstract syntax tree as specified by [Mozilla parser +// API][api]. +// +// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API + +"use strict"; + +exports.parse = parse; + +// This function tries to parse a single expression at a given +// offset in a string. Useful for parsing mixed-language formats +// that embed JavaScript expressions. + +exports.parseExpressionAt = parseExpressionAt; + +// Acorn is organized as a tokenizer and a recursive-descent parser. +// The `tokenize` export provides an interface to the tokenizer. + +exports.tokenizer = tokenizer; +exports.__esModule = true; +// Acorn is a tiny, fast JavaScript parser written in JavaScript. +// +// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and +// various contributors and released under an MIT license. +// +// Git repositories for Acorn are available at +// +// http://marijnhaverbeke.nl/git/acorn +// https://github.com/marijnh/acorn.git +// +// Please use the [github bug tracker][ghbt] to report issues. +// +// [ghbt]: https://github.com/marijnh/acorn/issues +// +// This file defines the main parser interface. The library also comes +// with a [error-tolerant parser][dammit] and an +// [abstract syntax tree walker][walk], defined in other files. +// +// [dammit]: acorn_loose.js +// [walk]: util/walk.js + +var _state = _dereq_("./state"); + +var Parser = _state.Parser; + +var _options = _dereq_("./options"); + +var getOptions = _options.getOptions; + +_dereq_("./parseutil"); + +_dereq_("./statement"); + +_dereq_("./lval"); + +_dereq_("./expression"); + +exports.Parser = _state.Parser; +exports.plugins = _state.plugins; +exports.defaultOptions = _options.defaultOptions; + +var _location = _dereq_("./location"); + +exports.SourceLocation = _location.SourceLocation; +exports.getLineInfo = _location.getLineInfo; +exports.Node = _dereq_("./node").Node; + +var _tokentype = _dereq_("./tokentype"); + +exports.TokenType = _tokentype.TokenType; +exports.tokTypes = _tokentype.types; + +var _tokencontext = _dereq_("./tokencontext"); + +exports.TokContext = _tokencontext.TokContext; +exports.tokContexts = _tokencontext.types; + +var _identifier = _dereq_("./identifier"); + +exports.isIdentifierChar = _identifier.isIdentifierChar; +exports.isIdentifierStart = _identifier.isIdentifierStart; +exports.Token = _dereq_("./tokenize").Token; + +var _whitespace = _dereq_("./whitespace"); + +exports.isNewLine = _whitespace.isNewLine; +exports.lineBreak = _whitespace.lineBreak; +exports.lineBreakG = _whitespace.lineBreakG; +var version = "1.2.2";exports.version = version; + +function parse(input, options) { + var p = parser(options, input); + var startPos = p.pos, + startLoc = p.options.locations && p.curPosition(); + p.nextToken(); + return p.parseTopLevel(p.options.program || p.startNodeAt(startPos, startLoc)); +} + +function parseExpressionAt(input, pos, options) { + var p = parser(options, input, pos); + p.nextToken(); + return p.parseExpression(); +} + +function tokenizer(input, options) { + return parser(options, input); +} + +function parser(options, input) { + return new Parser(getOptions(options), String(input)); +} + +},{"./expression":6,"./identifier":7,"./location":8,"./lval":9,"./node":10,"./options":11,"./parseutil":12,"./state":13,"./statement":14,"./tokencontext":15,"./tokenize":16,"./tokentype":17,"./whitespace":19}],2:[function(_dereq_,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } +} + +},{}],3:[function(_dereq_,module,exports){ +// shim for using process in browser + +var process = module.exports = {}; +var queue = []; +var draining = false; + +function drainQueue() { + if (draining) { + return; + } + draining = true; + var currentQueue; + var len = queue.length; + while(len) { + currentQueue = queue; + queue = []; + var i = -1; + while (++i < len) { + currentQueue[i](); + } + len = queue.length; + } + draining = false; +} +process.nextTick = function (fun) { + queue.push(fun); + if (!draining) { + setTimeout(drainQueue, 0); + } +}; + +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; +process.version = ''; // empty string to avoid regexp issues +process.versions = {}; + +function noop() {} + +process.on = noop; +process.addListener = noop; +process.once = noop; +process.off = noop; +process.removeListener = noop; +process.removeAllListeners = noop; +process.emit = noop; + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +// TODO(shtylman) +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; +process.umask = function() { return 0; }; + +},{}],4:[function(_dereq_,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; +} +},{}],5:[function(_dereq_,module,exports){ +(function (process,global){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } + + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; +}; + + +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; + } + + if (process.noDeprecation === true) { + return fn; + } + + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); + } + + return deprecated; +}; + + +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; + } else { + debugs[set] = function() {}; + } + } + return debugs[set]; +}; + + +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); +} +exports.inspect = inspect; + + +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] +}; + +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' +}; + + +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; + + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; + } else { + return str; + } +} + + +function stylizeNoColor(str, styleType) { + return str; +} + + +function arrayToHash(array) { + var hash = {}; + + array.forEach(function(val, idx) { + hash[val] = true; + }); + + return hash; +} + + +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); + } + return ret; + } + + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; + } + + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); + + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } + + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } + + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); + } + } + + var base = '', array = false, braces = ['{', '}']; + + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; + } + + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; + } + + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); + } + + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } + + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } + + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } + + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } + + ctx.seen.push(value); + + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } + + ctx.seen.pop(); + + return reduceToSingleString(output, base, braces); +} + + +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); + } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} + + +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} + + +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); + } else { + output.push(''); + } + } + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; +} + + +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); + } else { + str = ctx.stylize('[Getter]', 'special'); + } + } else { + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); + } + } + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } + } + + return name + ': ' + str; +} + + +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); + + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + } + + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; +} + + +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); +} +exports.isArray = isArray; + +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; + +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; + +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; + +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; + +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; + +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; + +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; + +function isRegExp(re) { + return isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; + +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; + +function isError(e) { + return isObject(e) && + (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; + +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; + +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; + +exports.isBuffer = _dereq_('./support/isBuffer'); + +function objectToString(o) { + return Object.prototype.toString.call(o); +} + + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} + + +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; + +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} + + +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +}; + + +/** + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = _dereq_('inherits'); + +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; + + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; + } + return origin; +}; + +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(obj, prop); +} + +}).call(this,_dereq_('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./support/isBuffer":4,"_process":3,"inherits":2}],6:[function(_dereq_,module,exports){ +// A recursive descent parser operates by defining functions for all +// syntactic elements, and recursively calling those, each function +// advancing the input stream and returning an AST node. Precedence +// of constructs (for example, the fact that `!x[1]` means `!(x[1])` +// instead of `(!x)[1]` is handled by the fact that the parser +// function that parses unary prefix operators is called first, and +// in turn calls the function that parses `[]` subscripts — that +// way, it'll receive the node for `x[1]` already parsed, and wraps +// *that* in the unary operator node. +// +// Acorn uses an [operator precedence parser][opp] to handle binary +// operator precedence, because it is much more compact than using +// the technique outlined above, which uses different, nesting +// functions to specify precedence, for all of the ten binary +// precedence levels that JavaScript defines. +// +// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser + +"use strict"; + +var tt = _dereq_("./tokentype").types; + +var Parser = _dereq_("./state").Parser; + +var reservedWords = _dereq_("./identifier").reservedWords; + +var has = _dereq_("./util").has; + +var pp = Parser.prototype; + +// Check if property name clashes with already added. +// Object/class getters and setters are not allowed to clash — +// either with each other or with an init property — and in +// strict mode, init properties are also not allowed to be repeated. + +pp.checkPropClash = function (prop, propHash) { + if (this.options.ecmaVersion >= 6) return; + var key = prop.key, + name = undefined; + switch (key.type) { + case "Identifier": + name = key.name;break; + case "Literal": + name = String(key.value);break; + default: + return; + } + var kind = prop.kind || "init", + other = undefined; + if (has(propHash, name)) { + other = propHash[name]; + var isGetSet = kind !== "init"; + if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init)) this.raise(key.start, "Redefinition of property"); + } else { + other = propHash[name] = { + init: false, + get: false, + set: false + }; + } + other[kind] = true; +}; + +// ### Expression parsing + +// These nest, from the most general expression type at the top to +// 'atomic', nondivisible expression types at the bottom. Most of +// the functions will simply let the function(s) below them parse, +// and, *if* the syntactic construct they handle is present, wrap +// the AST node that the inner parser gave them in another node. + +// Parse a full expression. The optional arguments are used to +// forbid the `in` operator (in for loops initalization expressions) +// and provide reference for storing '=' operator inside shorthand +// property assignment in contexts where both object expression +// and object pattern might appear (so it's possible to raise +// delayed syntax error at correct position). + +pp.parseExpression = function (noIn, refShorthandDefaultPos) { + var startPos = this.start, + startLoc = this.startLoc; + var expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos); + if (this.type === tt.comma) { + var node = this.startNodeAt(startPos, startLoc); + node.expressions = [expr]; + while (this.eat(tt.comma)) node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos)); + return this.finishNode(node, "SequenceExpression"); + } + return expr; +}; + +// Parse an assignment expression. This includes applications of +// operators like `+=`. + +pp.parseMaybeAssign = function (noIn, refShorthandDefaultPos, afterLeftParse) { + if (this.type == tt._yield && this.inGenerator) return this.parseYield(); + + var failOnShorthandAssign = undefined; + if (!refShorthandDefaultPos) { + refShorthandDefaultPos = { start: 0 }; + failOnShorthandAssign = true; + } else { + failOnShorthandAssign = false; + } + var startPos = this.start, + startLoc = this.startLoc; + if (this.type == tt.parenL || this.type == tt.name) this.potentialArrowAt = this.start; + var left = this.parseMaybeConditional(noIn, refShorthandDefaultPos); + if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc); + if (this.type.isAssign) { + var node = this.startNodeAt(startPos, startLoc); + node.operator = this.value; + node.left = this.type === tt.eq ? this.toAssignable(left) : left; + refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly + this.checkLVal(left); + this.next(); + node.right = this.parseMaybeAssign(noIn); + return this.finishNode(node, "AssignmentExpression"); + } else if (failOnShorthandAssign && refShorthandDefaultPos.start) { + this.unexpected(refShorthandDefaultPos.start); + } + return left; +}; + +// Parse a ternary conditional (`?:`) operator. + +pp.parseMaybeConditional = function (noIn, refShorthandDefaultPos) { + var startPos = this.start, + startLoc = this.startLoc; + var expr = this.parseExprOps(noIn, refShorthandDefaultPos); + if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; + if (this.eat(tt.question)) { + var node = this.startNodeAt(startPos, startLoc); + node.test = expr; + node.consequent = this.parseMaybeAssign(); + this.expect(tt.colon); + node.alternate = this.parseMaybeAssign(noIn); + return this.finishNode(node, "ConditionalExpression"); + } + return expr; +}; + +// Start the precedence parser. + +pp.parseExprOps = function (noIn, refShorthandDefaultPos) { + var startPos = this.start, + startLoc = this.startLoc; + var expr = this.parseMaybeUnary(refShorthandDefaultPos); + if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; + return this.parseExprOp(expr, startPos, startLoc, -1, noIn); +}; + +// Parse binary operators with the operator precedence parsing +// algorithm. `left` is the left-hand side of the operator. +// `minPrec` provides context that allows the function to stop and +// defer further parser to one of its callers when it encounters an +// operator that has a lower precedence than the set it is parsing. + +pp.parseExprOp = function (left, leftStartPos, leftStartLoc, minPrec, noIn) { + var prec = this.type.binop; + if (Array.isArray(leftStartPos)) { + if (this.options.locations && noIn === undefined) { + // shift arguments to left by one + noIn = minPrec; + minPrec = leftStartLoc; + // flatten leftStartPos + leftStartLoc = leftStartPos[1]; + leftStartPos = leftStartPos[0]; + } + } + if (prec != null && (!noIn || this.type !== tt._in)) { + if (prec > minPrec) { + var node = this.startNodeAt(leftStartPos, leftStartLoc); + node.left = left; + node.operator = this.value; + var op = this.type; + this.next(); + var startPos = this.start, + startLoc = this.startLoc; + node.right = this.parseExprOp(this.parseMaybeUnary(), startPos, startLoc, prec, noIn); + this.finishNode(node, op === tt.logicalOR || op === tt.logicalAND ? "LogicalExpression" : "BinaryExpression"); + return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn); + } + } + return left; +}; + +// Parse unary operators, both prefix and postfix. + +pp.parseMaybeUnary = function (refShorthandDefaultPos) { + if (this.type.prefix) { + var node = this.startNode(), + update = this.type === tt.incDec; + node.operator = this.value; + node.prefix = true; + this.next(); + node.argument = this.parseMaybeUnary(); + if (refShorthandDefaultPos && refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start); + if (update) this.checkLVal(node.argument);else if (this.strict && node.operator === "delete" && node.argument.type === "Identifier") this.raise(node.start, "Deleting local variable in strict mode"); + return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression"); + } + var startPos = this.start, + startLoc = this.startLoc; + var expr = this.parseExprSubscripts(refShorthandDefaultPos); + if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; + while (this.type.postfix && !this.canInsertSemicolon()) { + var node = this.startNodeAt(startPos, startLoc); + node.operator = this.value; + node.prefix = false; + node.argument = expr; + this.checkLVal(expr); + this.next(); + expr = this.finishNode(node, "UpdateExpression"); + } + return expr; +}; + +// Parse call, dot, and `[]`-subscript expressions. + +pp.parseExprSubscripts = function (refShorthandDefaultPos) { + var startPos = this.start, + startLoc = this.startLoc; + var expr = this.parseExprAtom(refShorthandDefaultPos); + if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; + return this.parseSubscripts(expr, startPos, startLoc); +}; + +pp.parseSubscripts = function (base, startPos, startLoc, noCalls) { + if (Array.isArray(startPos)) { + if (this.options.locations && noCalls === undefined) { + // shift arguments to left by one + noCalls = startLoc; + // flatten startPos + startLoc = startPos[1]; + startPos = startPos[0]; + } + } + for (;;) { + if (this.eat(tt.dot)) { + var node = this.startNodeAt(startPos, startLoc); + node.object = base; + node.property = this.parseIdent(true); + node.computed = false; + base = this.finishNode(node, "MemberExpression"); + } else if (this.eat(tt.bracketL)) { + var node = this.startNodeAt(startPos, startLoc); + node.object = base; + node.property = this.parseExpression(); + node.computed = true; + this.expect(tt.bracketR); + base = this.finishNode(node, "MemberExpression"); + } else if (!noCalls && this.eat(tt.parenL)) { + var node = this.startNodeAt(startPos, startLoc); + node.callee = base; + node.arguments = this.parseExprList(tt.parenR, false); + base = this.finishNode(node, "CallExpression"); + } else if (this.type === tt.backQuote) { + var node = this.startNodeAt(startPos, startLoc); + node.tag = base; + node.quasi = this.parseTemplate(); + base = this.finishNode(node, "TaggedTemplateExpression"); + } else { + return base; + } + } +}; + +// Parse an atomic expression — either a single token that is an +// expression, an expression started by a keyword like `function` or +// `new`, or an expression wrapped in punctuation like `()`, `[]`, +// or `{}`. + +pp.parseExprAtom = function (refShorthandDefaultPos) { + var node = undefined, + canBeArrow = this.potentialArrowAt == this.start; + switch (this.type) { + case tt._this: + case tt._super: + var type = this.type === tt._this ? "ThisExpression" : "Super"; + node = this.startNode(); + this.next(); + return this.finishNode(node, type); + + case tt._yield: + if (this.inGenerator) this.unexpected(); + + case tt.name: + var startPos = this.start, + startLoc = this.startLoc; + var id = this.parseIdent(this.type !== tt.name); + if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id]); + return id; + + case tt.regexp: + var value = this.value; + node = this.parseLiteral(value.value); + node.regex = { pattern: value.pattern, flags: value.flags }; + return node; + + case tt.num:case tt.string: + return this.parseLiteral(this.value); + + case tt._null:case tt._true:case tt._false: + node = this.startNode(); + node.value = this.type === tt._null ? null : this.type === tt._true; + node.raw = this.type.keyword; + this.next(); + return this.finishNode(node, "Literal"); + + case tt.parenL: + return this.parseParenAndDistinguishExpression(canBeArrow); + + case tt.bracketL: + node = this.startNode(); + this.next(); + // check whether this is array comprehension or regular array + if (this.options.ecmaVersion >= 7 && this.type === tt._for) { + return this.parseComprehension(node, false); + } + node.elements = this.parseExprList(tt.bracketR, true, true, refShorthandDefaultPos); + return this.finishNode(node, "ArrayExpression"); + + case tt.braceL: + return this.parseObj(false, refShorthandDefaultPos); + + case tt._function: + node = this.startNode(); + this.next(); + return this.parseFunction(node, false); + + case tt._class: + return this.parseClass(this.startNode(), false); + + case tt._new: + return this.parseNew(); + + case tt.backQuote: + return this.parseTemplate(); + + default: + this.unexpected(); + } +}; + +pp.parseLiteral = function (value) { + var node = this.startNode(); + node.value = value; + node.raw = this.input.slice(this.start, this.end); + this.next(); + return this.finishNode(node, "Literal"); +}; + +pp.parseParenExpression = function () { + this.expect(tt.parenL); + var val = this.parseExpression(); + this.expect(tt.parenR); + return val; +}; + +pp.parseParenAndDistinguishExpression = function (canBeArrow) { + var startPos = this.start, + startLoc = this.startLoc, + val = undefined; + if (this.options.ecmaVersion >= 6) { + this.next(); + + if (this.options.ecmaVersion >= 7 && this.type === tt._for) { + return this.parseComprehension(this.startNodeAt(startPos, startLoc), true); + } + + var innerStartPos = this.start, + innerStartLoc = this.startLoc; + var exprList = [], + first = true; + var refShorthandDefaultPos = { start: 0 }, + spreadStart = undefined, + innerParenStart = undefined; + while (this.type !== tt.parenR) { + first ? first = false : this.expect(tt.comma); + if (this.type === tt.ellipsis) { + spreadStart = this.start; + exprList.push(this.parseParenItem(this.parseRest())); + break; + } else { + if (this.type === tt.parenL && !innerParenStart) { + innerParenStart = this.start; + } + exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem)); + } + } + var innerEndPos = this.start, + innerEndLoc = this.startLoc; + this.expect(tt.parenR); + + if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) { + if (innerParenStart) this.unexpected(innerParenStart); + return this.parseParenArrowList(startPos, startLoc, exprList); + } + + if (!exprList.length) this.unexpected(this.lastTokStart); + if (spreadStart) this.unexpected(spreadStart); + if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start); + + if (exprList.length > 1) { + val = this.startNodeAt(innerStartPos, innerStartLoc); + val.expressions = exprList; + this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc); + } else { + val = exprList[0]; + } + } else { + val = this.parseParenExpression(); + } + + if (this.options.preserveParens) { + var par = this.startNodeAt(startPos, startLoc); + par.expression = val; + return this.finishNode(par, "ParenthesizedExpression"); + } else { + return val; + } +}; + +pp.parseParenItem = function (item) { + return item; +}; + +pp.parseParenArrowList = function (startPos, startLoc, exprList) { + return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList); +}; + +// New's precedence is slightly tricky. It must allow its argument +// to be a `[]` or dot subscript expression, but not a call — at +// least, not without wrapping it in parentheses. Thus, it uses the + +var empty = []; + +pp.parseNew = function () { + var node = this.startNode(); + var meta = this.parseIdent(true); + if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) { + node.meta = meta; + node.property = this.parseIdent(true); + if (node.property.name !== "target") this.raise(node.property.start, "The only valid meta property for new is new.target"); + return this.finishNode(node, "MetaProperty"); + } + var startPos = this.start, + startLoc = this.startLoc; + node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true); + if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, false);else node.arguments = empty; + return this.finishNode(node, "NewExpression"); +}; + +// Parse template expression. + +pp.parseTemplateElement = function () { + var elem = this.startNode(); + elem.value = { + raw: this.input.slice(this.start, this.end), + cooked: this.value + }; + this.next(); + elem.tail = this.type === tt.backQuote; + return this.finishNode(elem, "TemplateElement"); +}; + +pp.parseTemplate = function () { + var node = this.startNode(); + this.next(); + node.expressions = []; + var curElt = this.parseTemplateElement(); + node.quasis = [curElt]; + while (!curElt.tail) { + this.expect(tt.dollarBraceL); + node.expressions.push(this.parseExpression()); + this.expect(tt.braceR); + node.quasis.push(curElt = this.parseTemplateElement()); + } + this.next(); + return this.finishNode(node, "TemplateLiteral"); +}; + +// Parse an object literal or binding pattern. + +pp.parseObj = function (isPattern, refShorthandDefaultPos) { + var node = this.startNode(), + first = true, + propHash = {}; + node.properties = []; + this.next(); + while (!this.eat(tt.braceR)) { + if (!first) { + this.expect(tt.comma); + if (this.afterTrailingComma(tt.braceR)) break; + } else first = false; + + var prop = this.startNode(), + isGenerator = undefined, + startPos = undefined, + startLoc = undefined; + if (this.options.ecmaVersion >= 6) { + prop.method = false; + prop.shorthand = false; + if (isPattern || refShorthandDefaultPos) { + startPos = this.start; + startLoc = this.startLoc; + } + if (!isPattern) isGenerator = this.eat(tt.star); + } + this.parsePropertyName(prop); + this.parsePropertyValue(prop, isPattern, isGenerator, startPos, startLoc, refShorthandDefaultPos); + this.checkPropClash(prop, propHash); + node.properties.push(this.finishNode(prop, "Property")); + } + return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression"); +}; + +pp.parsePropertyValue = function (prop, isPattern, isGenerator, startPos, startLoc, refShorthandDefaultPos) { + if (this.eat(tt.colon)) { + prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refShorthandDefaultPos); + prop.kind = "init"; + } else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) { + if (isPattern) this.unexpected(); + prop.kind = "init"; + prop.method = true; + prop.value = this.parseMethod(isGenerator); + } else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && (this.type != tt.comma && this.type != tt.braceR)) { + if (isGenerator || isPattern) this.unexpected(); + prop.kind = prop.key.name; + this.parsePropertyName(prop); + prop.value = this.parseMethod(false); + } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") { + prop.kind = "init"; + if (isPattern) { + if (this.isKeyword(prop.key.name) || this.strict && (reservedWords.strictBind(prop.key.name) || reservedWords.strict(prop.key.name)) || !this.options.allowReserved && this.isReservedWord(prop.key.name)) this.raise(prop.key.start, "Binding " + prop.key.name); + prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key); + } else if (this.type === tt.eq && refShorthandDefaultPos) { + if (!refShorthandDefaultPos.start) refShorthandDefaultPos.start = this.start; + prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key); + } else { + prop.value = prop.key; + } + prop.shorthand = true; + } else this.unexpected(); +}; + +pp.parsePropertyName = function (prop) { + if (this.options.ecmaVersion >= 6) { + if (this.eat(tt.bracketL)) { + prop.computed = true; + prop.key = this.parseMaybeAssign(); + this.expect(tt.bracketR); + return prop.key; + } else { + prop.computed = false; + } + } + return prop.key = this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true); +}; + +// Initialize empty function node. + +pp.initFunction = function (node) { + node.id = null; + if (this.options.ecmaVersion >= 6) { + node.generator = false; + node.expression = false; + } +}; + +// Parse object or class method. + +pp.parseMethod = function (isGenerator) { + var node = this.startNode(); + this.initFunction(node); + this.expect(tt.parenL); + node.params = this.parseBindingList(tt.parenR, false, false); + var allowExpressionBody = undefined; + if (this.options.ecmaVersion >= 6) { + node.generator = isGenerator; + allowExpressionBody = true; + } else { + allowExpressionBody = false; + } + this.parseFunctionBody(node, allowExpressionBody); + return this.finishNode(node, "FunctionExpression"); +}; + +// Parse arrow function expression with given parameters. + +pp.parseArrowExpression = function (node, params) { + this.initFunction(node); + node.params = this.toAssignableList(params, true); + this.parseFunctionBody(node, true); + return this.finishNode(node, "ArrowFunctionExpression"); +}; + +// Parse function body and check parameters. + +pp.parseFunctionBody = function (node, allowExpression) { + var isExpression = allowExpression && this.type !== tt.braceL; + + if (isExpression) { + node.body = this.parseMaybeAssign(); + node.expression = true; + } else { + // Start a new scope with regard to labels and the `inFunction` + // flag (restore them to their old value afterwards). + var oldInFunc = this.inFunction, + oldInGen = this.inGenerator, + oldLabels = this.labels; + this.inFunction = true;this.inGenerator = node.generator;this.labels = []; + node.body = this.parseBlock(true); + node.expression = false; + this.inFunction = oldInFunc;this.inGenerator = oldInGen;this.labels = oldLabels; + } + + // If this is a strict mode function, verify that argument names + // are not repeated, and it does not try to bind the words `eval` + // or `arguments`. + if (this.strict || !isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) { + var nameHash = {}, + oldStrict = this.strict; + this.strict = true; + if (node.id) this.checkLVal(node.id, true); + for (var i = 0; i < node.params.length; i++) { + this.checkLVal(node.params[i], true, nameHash); + }this.strict = oldStrict; + } +}; + +// Parses a comma-separated list of expressions, and returns them as +// an array. `close` is the token type that ends the list, and +// `allowEmpty` can be turned on to allow subsequent commas with +// nothing in between them to be parsed as `null` (which is needed +// for array literals). + +pp.parseExprList = function (close, allowTrailingComma, allowEmpty, refShorthandDefaultPos) { + var elts = [], + first = true; + while (!this.eat(close)) { + if (!first) { + this.expect(tt.comma); + if (allowTrailingComma && this.afterTrailingComma(close)) break; + } else first = false; + + if (allowEmpty && this.type === tt.comma) { + elts.push(null); + } else { + if (this.type === tt.ellipsis) elts.push(this.parseSpread(refShorthandDefaultPos));else elts.push(this.parseMaybeAssign(false, refShorthandDefaultPos)); + } + } + return elts; +}; + +// Parse the next token as an identifier. If `liberal` is true (used +// when parsing properties), it will also convert keywords into +// identifiers. + +pp.parseIdent = function (liberal) { + var node = this.startNode(); + if (liberal && this.options.allowReserved == "never") liberal = false; + if (this.type === tt.name) { + if (!liberal && (!this.options.allowReserved && this.isReservedWord(this.value) || this.strict && reservedWords.strict(this.value) && (this.options.ecmaVersion >= 6 || this.input.slice(this.start, this.end).indexOf("\\") == -1))) this.raise(this.start, "The keyword '" + this.value + "' is reserved"); + node.name = this.value; + } else if (liberal && this.type.keyword) { + node.name = this.type.keyword; + } else { + this.unexpected(); + } + this.next(); + return this.finishNode(node, "Identifier"); +}; + +// Parses yield expression inside generator. + +pp.parseYield = function () { + var node = this.startNode(); + this.next(); + if (this.type == tt.semi || this.canInsertSemicolon() || this.type != tt.star && !this.type.startsExpr) { + node.delegate = false; + node.argument = null; + } else { + node.delegate = this.eat(tt.star); + node.argument = this.parseMaybeAssign(); + } + return this.finishNode(node, "YieldExpression"); +}; + +// Parses array and generator comprehensions. + +pp.parseComprehension = function (node, isGenerator) { + node.blocks = []; + while (this.type === tt._for) { + var block = this.startNode(); + this.next(); + this.expect(tt.parenL); + block.left = this.parseBindingAtom(); + this.checkLVal(block.left, true); + this.expectContextual("of"); + block.right = this.parseExpression(); + this.expect(tt.parenR); + node.blocks.push(this.finishNode(block, "ComprehensionBlock")); + } + node.filter = this.eat(tt._if) ? this.parseParenExpression() : null; + node.body = this.parseExpression(); + this.expect(isGenerator ? tt.parenR : tt.bracketR); + node.generator = isGenerator; + return this.finishNode(node, "ComprehensionExpression"); +}; + +},{"./identifier":7,"./state":13,"./tokentype":17,"./util":18}],7:[function(_dereq_,module,exports){ + + +// Test whether a given character code starts an identifier. + +"use strict"; + +exports.isIdentifierStart = isIdentifierStart; + +// Test whether a given character is part of an identifier. + +exports.isIdentifierChar = isIdentifierChar; +exports.__esModule = true; +// This is a trick taken from Esprima. It turns out that, on +// non-Chrome browsers, to check whether a string is in a set, a +// predicate containing a big ugly `switch` statement is faster than +// a regular expression, and on Chrome the two are about on par. +// This function uses `eval` (non-lexical) to produce such a +// predicate from a space-separated string of words. +// +// It starts by sorting the words by length. + +function makePredicate(words) { + words = words.split(" "); + var f = "", + cats = []; + out: for (var i = 0; i < words.length; ++i) { + for (var j = 0; j < cats.length; ++j) { + if (cats[j][0].length == words[i].length) { + cats[j].push(words[i]); + continue out; + } + }cats.push([words[i]]); + } + function compareTo(arr) { + if (arr.length == 1) { + return f += "return str === " + JSON.stringify(arr[0]) + ";"; + }f += "switch(str){"; + for (var i = 0; i < arr.length; ++i) { + f += "case " + JSON.stringify(arr[i]) + ":"; + }f += "return true}return false;"; + } + + // When there are more than three length categories, an outer + // switch first dispatches on the lengths, to save on comparisons. + + if (cats.length > 3) { + cats.sort(function (a, b) { + return b.length - a.length; + }); + f += "switch(str.length){"; + for (var i = 0; i < cats.length; ++i) { + var cat = cats[i]; + f += "case " + cat[0].length + ":"; + compareTo(cat); + } + f += "}" + + // Otherwise, simply generate a flat `switch` statement. + + ; + } else { + compareTo(words); + } + return new Function("str", f); +} + +// Reserved word lists for various dialects of the language + +var reservedWords = { + 3: makePredicate("abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile"), + 5: makePredicate("class enum extends super const export import"), + 6: makePredicate("enum await"), + strict: makePredicate("implements interface let package private protected public static yield"), + strictBind: makePredicate("eval arguments") +}; + +exports.reservedWords = reservedWords; +// And the keywords + +var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this"; + +var keywords = { + 5: makePredicate(ecma5AndLessKeywords), + 6: makePredicate(ecma5AndLessKeywords + " let const class extends export import yield super") +}; + +exports.keywords = keywords; +// ## Character categories + +// Big ugly regular expressions that match characters in the +// whitespace, identifier, and identifier-start categories. These +// are only applied when a character is found to actually have a +// code point above 128. +// Generated by `tools/generate-identifier-regex.js`. + +var nonASCIIidentifierStartChars = "ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽͿΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԯԱ-Ֆՙա-ևא-תװ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࢠ-ࢲऄ-हऽॐक़-ॡॱ-ঀঅ-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-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-ᛸᜀ-ᜌᜎ-ᜑᜠ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤞᥐ-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-ℓℕ℘-ℝℤΩℨK-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞ々-〇〡-〩〱-〵〸-〼ぁ-ゖ゛-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚝꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞭꞰꞱꟷ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꧠ-ꧤꧦ-ꧯꧺ-ꧾꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꩾ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꬰ-ꭚꭜ-ꭟꭤꭥꯀ-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"; +var nonASCIIidentifierChars = "·̀-ͯ·҃-֑҇-ׇֽֿׁׂׅׄؐ-ًؚ-٩ٰۖ-ۜ۟-۪ۤۧۨ-ۭ۰-۹ܑܰ-݊ަ-ް߀-߉߫-߳ࠖ-࠙ࠛ-ࠣࠥ-ࠧࠩ-࡙࠭-࡛ࣤ-ःऺ-़ा-ॏ॑-ॗॢॣ०-९ঁ-ঃ়া-ৄেৈো-্ৗৢৣ০-৯ਁ-ਃ਼ਾ-ੂੇੈੋ-੍ੑ੦-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢૣ૦-૯ଁ-ଃ଼ା-ୄେୈୋ-୍ୖୗୢୣ୦-୯ஂா-ூெ-ைொ-்ௗ௦-௯ఀ-ఃా-ౄె-ైొ-్ౕౖౢౣ౦-౯ಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕೖೢೣ೦-೯ഁ-ഃാ-ൄെ-ൈൊ-്ൗൢൣ൦-൯ංඃ්ා-ුූෘ-ෟ෦-෯ෲෳัิ-ฺ็-๎๐-๙ັິ-ູົຼ່-ໍ໐-໙༘༙༠-༩༹༵༷༾༿ཱ-྄྆྇ྍ-ྗྙ-ྼ࿆ါ-ှ၀-၉ၖ-ၙၞ-ၠၢ-ၤၧ-ၭၱ-ၴႂ-ႍႏ-ႝ፝-፟፩-፱ᜒ-᜔ᜲ-᜴ᝒᝓᝲᝳ឴-៓៝០-៩᠋-᠍᠐-᠙ᢩᤠ-ᤫᤰ-᤻᥆-᥏ᦰ-ᧀᧈᧉ᧐-᧚ᨗ-ᨛᩕ-ᩞ᩠-᩿᩼-᪉᪐-᪙᪰-᪽ᬀ-ᬄ᬴-᭄᭐-᭙᭫-᭳ᮀ-ᮂᮡ-ᮭ᮰-᮹᯦-᯳ᰤ-᰷᱀-᱉᱐-᱙᳐-᳔᳒-᳨᳭ᳲ-᳴᳸᳹᷀-᷵᷼-᷿‿⁀⁔⃐-⃥⃜⃡-⃰⳯-⵿⳱ⷠ-〪ⷿ-゙゚〯꘠-꘩꙯ꙴ-꙽ꚟ꛰꛱ꠂ꠆ꠋꠣ-ꠧꢀꢁꢴ-꣄꣐-꣙꣠-꣱꤀-꤉ꤦ-꤭ꥇ-꥓ꦀ-ꦃ꦳-꧀꧐-꧙ꧥ꧰-꧹ꨩ-ꨶꩃꩌꩍ꩐-꩙ꩻ-ꩽꪰꪲ-ꪴꪷꪸꪾ꪿꫁ꫫ-ꫯꫵ꫶ꯣ-ꯪ꯬꯭꯰-꯹ﬞ︀-️︠-︭︳︴﹍-﹏０-９＿"; + +var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]"); +var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]"); + +nonASCIIidentifierStartChars = nonASCIIidentifierChars = null; + +// These are a run-length and offset encoded representation of the +// >0xffff code points that are a valid part of identifiers. The +// offset starts at 0x10000, and each pair of numbers represents an +// offset to the next range, and then a size of the range. They were +// generated by tools/generate-identifier-regex.js +var astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 17, 26, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 99, 39, 9, 51, 157, 310, 10, 21, 11, 7, 153, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 98, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 26, 45, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 955, 52, 76, 44, 33, 24, 27, 35, 42, 34, 4, 0, 13, 47, 15, 3, 22, 0, 38, 17, 2, 24, 133, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 32, 4, 287, 47, 21, 1, 2, 0, 185, 46, 82, 47, 21, 0, 60, 42, 502, 63, 32, 0, 449, 56, 1288, 920, 104, 110, 2962, 1070, 13266, 568, 8, 30, 114, 29, 19, 47, 17, 3, 32, 20, 6, 18, 881, 68, 12, 0, 67, 12, 16481, 1, 3071, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 4149, 196, 1340, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42710, 42, 4148, 12, 221, 16355, 541]; +var astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 1306, 2, 54, 14, 32, 9, 16, 3, 46, 10, 54, 9, 7, 2, 37, 13, 2, 9, 52, 0, 13, 2, 49, 13, 16, 9, 83, 11, 168, 11, 6, 9, 8, 2, 57, 0, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 316, 19, 13, 9, 214, 6, 3, 8, 112, 16, 16, 9, 82, 12, 9, 9, 535, 9, 20855, 9, 135, 4, 60, 6, 26, 9, 1016, 45, 17, 3, 19723, 1, 5319, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 4305, 6, 792618, 239]; + +// This has a complexity linear to the value of the code. The +// assumption is that looking up astral identifier characters is +// rare. +function isInAstralSet(code, set) { + var pos = 65536; + for (var i = 0; i < set.length; i += 2) { + pos += set[i]; + if (pos > code) { + return false; + }pos += set[i + 1]; + if (pos >= code) { + return true; + } + } +} +function isIdentifierStart(code, astral) { + if (code < 65) { + return code === 36; + }if (code < 91) { + return true; + }if (code < 97) { + return code === 95; + }if (code < 123) { + return true; + }if (code <= 65535) { + return code >= 170 && nonASCIIidentifierStart.test(String.fromCharCode(code)); + }if (astral === false) { + return false; + }return isInAstralSet(code, astralIdentifierStartCodes); +} + +function isIdentifierChar(code, astral) { + if (code < 48) { + return code === 36; + }if (code < 58) { + return true; + }if (code < 65) { + return false; + }if (code < 91) { + return true; + }if (code < 97) { + return code === 95; + }if (code < 123) { + return true; + }if (code <= 65535) { + return code >= 170 && nonASCIIidentifier.test(String.fromCharCode(code)); + }if (astral === false) { + return false; + }return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes); +} + +},{}],8:[function(_dereq_,module,exports){ +"use strict"; + +var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }; + +// The `getLineInfo` function is mostly useful when the +// `locations` option is off (for performance reasons) and you +// want to find the line/column position for a given character +// offset. `input` should be the code string that the offset refers +// into. + +exports.getLineInfo = getLineInfo; +exports.__esModule = true; + +var Parser = _dereq_("./state").Parser; + +var lineBreakG = _dereq_("./whitespace").lineBreakG; + +var deprecate = _dereq_("util").deprecate; + +// These are used when `options.locations` is on, for the +// `startLoc` and `endLoc` properties. + +var Position = exports.Position = (function () { + function Position(line, col) { + _classCallCheck(this, Position); + + this.line = line; + this.column = col; + } + + Position.prototype.offset = function offset(n) { + return new Position(this.line, this.column + n); + }; + + return Position; +})(); + +var SourceLocation = exports.SourceLocation = function SourceLocation(p, start, end) { + _classCallCheck(this, SourceLocation); + + this.start = start; + this.end = end; + if (p.sourceFile !== null) this.source = p.sourceFile; +}; + +function getLineInfo(input, offset) { + for (var line = 1, cur = 0;;) { + lineBreakG.lastIndex = cur; + var match = lineBreakG.exec(input); + if (match && match.index < offset) { + ++line; + cur = match.index + match[0].length; + } else { + return new Position(line, offset - cur); + } + } +} + +var pp = Parser.prototype; + +// This function is used to raise exceptions on parse errors. It +// takes an offset integer (into the current `input`) to indicate +// the location of the error, attaches the position to the end +// of the error message, and then raises a `SyntaxError` with that +// message. + +pp.raise = function (pos, message) { + var loc = getLineInfo(this.input, pos); + message += " (" + loc.line + ":" + loc.column + ")"; + var err = new SyntaxError(message); + err.pos = pos;err.loc = loc;err.raisedAt = this.pos; + throw err; +}; + +pp.curPosition = function () { + return new Position(this.curLine, this.pos - this.lineStart); +}; + +pp.markPosition = function () { + return this.options.locations ? [this.start, this.startLoc] : this.start; +}; + +},{"./state":13,"./whitespace":19,"util":5}],9:[function(_dereq_,module,exports){ +"use strict"; + +var tt = _dereq_("./tokentype").types; + +var Parser = _dereq_("./state").Parser; + +var reservedWords = _dereq_("./identifier").reservedWords; + +var has = _dereq_("./util").has; + +var pp = Parser.prototype; + +// Convert existing expression atom to assignable pattern +// if possible. + +pp.toAssignable = function (node, isBinding) { + if (this.options.ecmaVersion >= 6 && node) { + switch (node.type) { + case "Identifier": + case "ObjectPattern": + case "ArrayPattern": + case "AssignmentPattern": + break; + + case "ObjectExpression": + node.type = "ObjectPattern"; + for (var i = 0; i < node.properties.length; i++) { + var prop = node.properties[i]; + if (prop.kind !== "init") this.raise(prop.key.start, "Object pattern can't contain getter or setter"); + this.toAssignable(prop.value, isBinding); + } + break; + + case "ArrayExpression": + node.type = "ArrayPattern"; + this.toAssignableList(node.elements, isBinding); + break; + + case "AssignmentExpression": + if (node.operator === "=") { + node.type = "AssignmentPattern"; + } else { + this.raise(node.left.end, "Only '=' operator can be used for specifying default value."); + } + break; + + case "ParenthesizedExpression": + node.expression = this.toAssignable(node.expression, isBinding); + break; + + case "MemberExpression": + if (!isBinding) break; + + default: + this.raise(node.start, "Assigning to rvalue"); + } + } + return node; +}; + +// Convert list of expression atoms to binding list. + +pp.toAssignableList = function (exprList, isBinding) { + var end = exprList.length; + if (end) { + var last = exprList[end - 1]; + if (last && last.type == "RestElement") { + --end; + } else if (last && last.type == "SpreadElement") { + last.type = "RestElement"; + var arg = last.argument; + this.toAssignable(arg, isBinding); + if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern") this.unexpected(arg.start); + --end; + } + } + for (var i = 0; i < end; i++) { + var elt = exprList[i]; + if (elt) this.toAssignable(elt, isBinding); + } + return exprList; +}; + +// Parses spread element. + +pp.parseSpread = function (refShorthandDefaultPos) { + var node = this.startNode(); + this.next(); + node.argument = this.parseMaybeAssign(refShorthandDefaultPos); + return this.finishNode(node, "SpreadElement"); +}; + +pp.parseRest = function () { + var node = this.startNode(); + this.next(); + node.argument = this.type === tt.name || this.type === tt.bracketL ? this.parseBindingAtom() : this.unexpected(); + return this.finishNode(node, "RestElement"); +}; + +// Parses lvalue (assignable) atom. + +pp.parseBindingAtom = function () { + if (this.options.ecmaVersion < 6) return this.parseIdent(); + switch (this.type) { + case tt.name: + return this.parseIdent(); + + case tt.bracketL: + var node = this.startNode(); + this.next(); + node.elements = this.parseBindingList(tt.bracketR, true, true); + return this.finishNode(node, "ArrayPattern"); + + case tt.braceL: + return this.parseObj(true); + + default: + this.unexpected(); + } +}; + +pp.parseBindingList = function (close, allowEmpty, allowTrailingComma) { + var elts = [], + first = true; + while (!this.eat(close)) { + if (first) first = false;else this.expect(tt.comma); + if (allowEmpty && this.type === tt.comma) { + elts.push(null); + } else if (allowTrailingComma && this.afterTrailingComma(close)) { + break; + } else if (this.type === tt.ellipsis) { + var rest = this.parseRest(); + this.parseBindingListItem(rest); + elts.push(rest); + this.expect(close); + break; + } else { + var elem = this.parseMaybeDefault(this.start, this.startLoc); + this.parseBindingListItem(elem); + elts.push(elem); + } + } + return elts; +}; + +pp.parseBindingListItem = function (param) { + return param; +}; + +// Parses assignment pattern around given atom if possible. + +pp.parseMaybeDefault = function (startPos, startLoc, left) { + if (Array.isArray(startPos)) { + if (this.options.locations && noCalls === undefined) { + // shift arguments to left by one + left = startLoc; + // flatten startPos + startLoc = startPos[1]; + startPos = startPos[0]; + } + } + left = left || this.parseBindingAtom(); + if (!this.eat(tt.eq)) return left; + var node = this.startNodeAt(startPos, startLoc); + node.operator = "="; + node.left = left; + node.right = this.parseMaybeAssign(); + return this.finishNode(node, "AssignmentPattern"); +}; + +// Verify that a node is an lval — something that can be assigned +// to. + +pp.checkLVal = function (expr, isBinding, checkClashes) { + switch (expr.type) { + case "Identifier": + if (this.strict && (reservedWords.strictBind(expr.name) || reservedWords.strict(expr.name))) this.raise(expr.start, (isBinding ? "Binding " : "Assigning to ") + expr.name + " in strict mode"); + if (checkClashes) { + if (has(checkClashes, expr.name)) this.raise(expr.start, "Argument name clash in strict mode"); + checkClashes[expr.name] = true; + } + break; + + case "MemberExpression": + if (isBinding) this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression"); + break; + + case "ObjectPattern": + for (var i = 0; i < expr.properties.length; i++) { + this.checkLVal(expr.properties[i].value, isBinding, checkClashes); + }break; + + case "ArrayPattern": + for (var i = 0; i < expr.elements.length; i++) { + var elem = expr.elements[i]; + if (elem) this.checkLVal(elem, isBinding, checkClashes); + } + break; + + case "AssignmentPattern": + this.checkLVal(expr.left, isBinding, checkClashes); + break; + + case "RestElement": + this.checkLVal(expr.argument, isBinding, checkClashes); + break; + + case "ParenthesizedExpression": + this.checkLVal(expr.expression, isBinding, checkClashes); + break; + + default: + this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " rvalue"); + } +}; + +},{"./identifier":7,"./state":13,"./tokentype":17,"./util":18}],10:[function(_dereq_,module,exports){ +"use strict"; + +var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }; + +exports.__esModule = true; + +var Parser = _dereq_("./state").Parser; + +var SourceLocation = _dereq_("./location").SourceLocation; + +// Start an AST node, attaching a start offset. + +var pp = Parser.prototype; + +var Node = exports.Node = function Node() { + _classCallCheck(this, Node); +}; + +pp.startNode = function () { + var node = new Node(); + node.start = this.start; + if (this.options.locations) node.loc = new SourceLocation(this, this.startLoc); + if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile; + if (this.options.ranges) node.range = [this.start, 0]; + return node; +}; + +pp.startNodeAt = function (pos, loc) { + var node = new Node(); + if (Array.isArray(pos)) { + if (this.options.locations && loc === undefined) { + // flatten pos + loc = pos[1]; + pos = pos[0]; + } + } + node.start = pos; + if (this.options.locations) node.loc = new SourceLocation(this, loc); + if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile; + if (this.options.ranges) node.range = [pos, 0]; + return node; +}; + +// Finish an AST node, adding `type` and `end` properties. + +pp.finishNode = function (node, type) { + node.type = type; + node.end = this.lastTokEnd; + if (this.options.locations) node.loc.end = this.lastTokEndLoc; + if (this.options.ranges) node.range[1] = this.lastTokEnd; + return node; +}; + +// Finish node at given position + +pp.finishNodeAt = function (node, type, pos, loc) { + node.type = type; + if (Array.isArray(pos)) { + if (this.options.locations && loc === undefined) { + // flatten pos + loc = pos[1]; + pos = pos[0]; + } + } + node.end = pos; + if (this.options.locations) node.loc.end = loc; + if (this.options.ranges) node.range[1] = pos; + return node; +}; + +},{"./location":8,"./state":13}],11:[function(_dereq_,module,exports){ + + +// Interpret and default an options object + +"use strict"; + +exports.getOptions = getOptions; +exports.__esModule = true; + +var _util = _dereq_("./util"); + +var has = _util.has; +var isArray = _util.isArray; + +var SourceLocation = _dereq_("./location").SourceLocation; + +// A second optional argument can be given to further configure +// the parser process. These options are recognized: + +var defaultOptions = { + // `ecmaVersion` indicates the ECMAScript version to parse. Must + // be either 3, or 5, or 6. This influences support for strict + // mode, the set of reserved words, support for getters and + // setters and other features. + ecmaVersion: 5, + // Source type ("script" or "module") for different semantics + sourceType: "script", + // `onInsertedSemicolon` can be a callback that will be called + // when a semicolon is automatically inserted. It will be passed + // th position of the comma as an offset, and if `locations` is + // enabled, it is given the location as a `{line, column}` object + // as second argument. + onInsertedSemicolon: null, + // `onTrailingComma` is similar to `onInsertedSemicolon`, but for + // trailing commas. + onTrailingComma: null, + // By default, reserved words are not enforced. Disable + // `allowReserved` to enforce them. When this option has the + // value "never", reserved words and keywords can also not be + // used as property names. + allowReserved: true, + // When enabled, a return at the top level is not considered an + // error. + allowReturnOutsideFunction: false, + // When enabled, import/export statements are not constrained to + // appearing at the top of the program. + allowImportExportEverywhere: false, + // When enabled, hashbang directive in the beginning of file + // is allowed and treated as a line comment. + allowHashBang: false, + // When `locations` is on, `loc` properties holding objects with + // `start` and `end` properties in `{line, column}` form (with + // line being 1-based and column 0-based) will be attached to the + // nodes. + locations: false, + // A function can be passed as `onToken` option, which will + // cause Acorn to call that function with object in the same + // format as tokenize() returns. Note that you are not + // allowed to call the parser from the callback—that will + // corrupt its internal state. + onToken: null, + // A function can be passed as `onComment` option, which will + // cause Acorn to call that function with `(block, text, start, + // end)` parameters whenever a comment is skipped. `block` is a + // boolean indicating whether this is a block (`/* */`) comment, + // `text` is the content of the comment, and `start` and `end` are + // character offsets that denote the start and end of the comment. + // When the `locations` option is on, two more parameters are + // passed, the full `{line, column}` locations of the start and + // end of the comments. Note that you are not allowed to call the + // parser from the callback—that will corrupt its internal state. + onComment: null, + // Nodes have their start and end characters offsets recorded in + // `start` and `end` properties (directly on the node, rather than + // the `loc` object, which holds line/column data. To also add a + // [semi-standardized][range] `range` property holding a `[start, + // end]` array with the same numbers, set the `ranges` option to + // `true`. + // + // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678 + ranges: false, + // It is possible to parse multiple files into a single AST by + // passing the tree produced by parsing the first file as + // `program` option in subsequent parses. This will add the + // toplevel forms of the parsed file to the `Program` (top) node + // of an existing parse tree. + program: null, + // When `locations` is on, you can pass this to record the source + // file in every node's `loc` object. + sourceFile: null, + // This value, if given, is stored in every node, whether + // `locations` is on or off. + directSourceFile: null, + // When enabled, parenthesized expressions are represented by + // (non-standard) ParenthesizedExpression nodes + preserveParens: false, + plugins: {} +};exports.defaultOptions = defaultOptions; + +function getOptions(opts) { + var options = {}; + for (var opt in defaultOptions) { + options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]; + }if (isArray(options.onToken)) { + (function () { + var tokens = options.onToken; + options.onToken = function (token) { + return tokens.push(token); + }; + })(); + } + if (isArray(options.onComment)) options.onComment = pushComment(options, options.onComment); + + return options; +} + +function pushComment(options, array) { + return function (block, text, start, end, startLoc, endLoc) { + var comment = { + type: block ? "Block" : "Line", + value: text, + start: start, + end: end + }; + if (options.locations) comment.loc = new SourceLocation(this, startLoc, endLoc); + if (options.ranges) comment.range = [start, end]; + array.push(comment); + }; +} + +},{"./location":8,"./util":18}],12:[function(_dereq_,module,exports){ +"use strict"; + +var tt = _dereq_("./tokentype").types; + +var Parser = _dereq_("./state").Parser; + +var lineBreak = _dereq_("./whitespace").lineBreak; + +var pp = Parser.prototype; + +// ## Parser utilities + +// Test whether a statement node is the string literal `"use strict"`. + +pp.isUseStrict = function (stmt) { + return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && stmt.expression.value === "use strict"; +}; + +// Predicate that tests whether the next token is of the given +// type, and if yes, consumes it as a side effect. + +pp.eat = function (type) { + if (this.type === type) { + this.next(); + return true; + } else { + return false; + } +}; + +// Tests whether parsed token is a contextual keyword. + +pp.isContextual = function (name) { + return this.type === tt.name && this.value === name; +}; + +// Consumes contextual keyword if possible. + +pp.eatContextual = function (name) { + return this.value === name && this.eat(tt.name); +}; + +// Asserts that following token is given contextual keyword. + +pp.expectContextual = function (name) { + if (!this.eatContextual(name)) this.unexpected(); +}; + +// Test whether a semicolon can be inserted at the current position. + +pp.canInsertSemicolon = function () { + return this.type === tt.eof || this.type === tt.braceR || lineBreak.test(this.input.slice(this.lastTokEnd, this.start)); +}; + +pp.insertSemicolon = function () { + if (this.canInsertSemicolon()) { + if (this.options.onInsertedSemicolon) this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc); + return true; + } +}; + +// Consume a semicolon, or, failing that, see if we are allowed to +// pretend that there is a semicolon at this position. + +pp.semicolon = function () { + if (!this.eat(tt.semi) && !this.insertSemicolon()) this.unexpected(); +}; + +pp.afterTrailingComma = function (tokType) { + if (this.type == tokType) { + if (this.options.onTrailingComma) this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); + this.next(); + return true; + } +}; + +// Expect a token of a given type. If found, consume it, otherwise, +// raise an unexpected token error. + +pp.expect = function (type) { + this.eat(type) || this.unexpected(); +}; + +// Raise an unexpected token error. + +pp.unexpected = function (pos) { + this.raise(pos != null ? pos : this.start, "Unexpected token"); +}; + +},{"./state":13,"./tokentype":17,"./whitespace":19}],13:[function(_dereq_,module,exports){ +"use strict"; + +exports.Parser = Parser; +exports.__esModule = true; + +var _identifier = _dereq_("./identifier"); + +var reservedWords = _identifier.reservedWords; +var keywords = _identifier.keywords; + +var tt = _dereq_("./tokentype").types; + +var lineBreak = _dereq_("./whitespace").lineBreak; + +function Parser(options, input, startPos) { + this.options = options; + this.sourceFile = this.options.sourceFile || null; + this.isKeyword = keywords[this.options.ecmaVersion >= 6 ? 6 : 5]; + this.isReservedWord = reservedWords[this.options.ecmaVersion]; + this.input = input; + + // Load plugins + this.loadPlugins(this.options.plugins); + + // Set up token state + + // The current position of the tokenizer in the input. + if (startPos) { + this.pos = startPos; + this.lineStart = Math.max(0, this.input.lastIndexOf("\n", startPos)); + this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length; + } else { + this.pos = this.lineStart = 0; + this.curLine = 1; + } + + // Properties of the current token: + // Its type + this.type = tt.eof; + // For tokens that include more information than their type, the value + this.value = null; + // Its start and end offset + this.start = this.end = this.pos; + // And, if locations are used, the {line, column} object + // corresponding to those offsets + this.startLoc = this.endLoc = null; + + // Position information for the previous token + this.lastTokEndLoc = this.lastTokStartLoc = null; + this.lastTokStart = this.lastTokEnd = this.pos; + + // The context stack is used to superficially track syntactic + // context to predict whether a regular expression is allowed in a + // given position. + this.context = this.initialContext(); + this.exprAllowed = true; + + // Figure out if it's a module code. + this.strict = this.inModule = this.options.sourceType === "module"; + + // Used to signify the start of a potential arrow function + this.potentialArrowAt = -1; + + // Flags to track whether we are in a function, a generator. + this.inFunction = this.inGenerator = false; + // Labels in scope. + this.labels = []; + + // If enabled, skip leading hashbang line. + if (this.pos === 0 && this.options.allowHashBang && this.input.slice(0, 2) === "#!") this.skipLineComment(2); +} + +Parser.prototype.extend = function (name, f) { + this[name] = f(this[name]); +}; + +// Registered plugins + +var plugins = {}; + +exports.plugins = plugins; +Parser.prototype.loadPlugins = function (plugins) { + for (var _name in plugins) { + var plugin = exports.plugins[_name]; + if (!plugin) throw new Error("Plugin '" + _name + "' not found"); + plugin(this, plugins[_name]); + } +}; + +},{"./identifier":7,"./tokentype":17,"./whitespace":19}],14:[function(_dereq_,module,exports){ +"use strict"; + +var tt = _dereq_("./tokentype").types; + +var Parser = _dereq_("./state").Parser; + +var lineBreak = _dereq_("./whitespace").lineBreak; + +var pp = Parser.prototype; + +// ### Statement parsing + +// Parse a program. Initializes the parser, reads any number of +// statements, and wraps them in a Program node. Optionally takes a +// `program` argument. If present, the statements will be appended +// to its body instead of creating a new node. + +pp.parseTopLevel = function (node) { + var first = true; + if (!node.body) node.body = []; + while (this.type !== tt.eof) { + var stmt = this.parseStatement(true, true); + node.body.push(stmt); + if (first && this.isUseStrict(stmt)) this.setStrict(true); + first = false; + } + this.next(); + if (this.options.ecmaVersion >= 6) { + node.sourceType = this.options.sourceType; + } + return this.finishNode(node, "Program"); +}; + +var loopLabel = { kind: "loop" }, + switchLabel = { kind: "switch" }; + +// Parse a single statement. +// +// If expecting a statement and finding a slash operator, parse a +// regular expression literal. This is to handle cases like +// `if (foo) /blah/.exec(foo)`, where looking at the previous token +// does not help. + +pp.parseStatement = function (declaration, topLevel) { + var starttype = this.type, + node = this.startNode(); + + // Most types of statements are recognized by the keyword they + // start with. Many are trivial to parse, some require a bit of + // complexity. + + switch (starttype) { + case tt._break:case tt._continue: + return this.parseBreakContinueStatement(node, starttype.keyword); + case tt._debugger: + return this.parseDebuggerStatement(node); + case tt._do: + return this.parseDoStatement(node); + case tt._for: + return this.parseForStatement(node); + case tt._function: + if (!declaration && this.options.ecmaVersion >= 6) this.unexpected(); + return this.parseFunctionStatement(node); + case tt._class: + if (!declaration) this.unexpected(); + return this.parseClass(node, true); + case tt._if: + return this.parseIfStatement(node); + case tt._return: + return this.parseReturnStatement(node); + case tt._switch: + return this.parseSwitchStatement(node); + case tt._throw: + return this.parseThrowStatement(node); + case tt._try: + return this.parseTryStatement(node); + case tt._let:case tt._const: + if (!declaration) this.unexpected(); // NOTE: falls through to _var + case tt._var: + return this.parseVarStatement(node, starttype); + case tt._while: + return this.parseWhileStatement(node); + case tt._with: + return this.parseWithStatement(node); + case tt.braceL: + return this.parseBlock(); + case tt.semi: + return this.parseEmptyStatement(node); + case tt._export: + case tt._import: + if (!this.options.allowImportExportEverywhere) { + if (!topLevel) this.raise(this.start, "'import' and 'export' may only appear at the top level"); + if (!this.inModule) this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'"); + } + return starttype === tt._import ? this.parseImport(node) : this.parseExport(node); + + // If the statement does not start with a statement keyword or a + // brace, it's an ExpressionStatement or LabeledStatement. We + // simply start parsing an expression, and afterwards, if the + // next token is a colon and the expression was a simple + // Identifier node, we switch to interpreting it as a label. + default: + var maybeName = this.value, + expr = this.parseExpression(); + if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon)) return this.parseLabeledStatement(node, maybeName, expr);else return this.parseExpressionStatement(node, expr); + } +}; + +pp.parseBreakContinueStatement = function (node, keyword) { + var isBreak = keyword == "break"; + this.next(); + if (this.eat(tt.semi) || this.insertSemicolon()) node.label = null;else if (this.type !== tt.name) this.unexpected();else { + node.label = this.parseIdent(); + this.semicolon(); + } + + // Verify that there is an actual destination to break or + // continue to. + for (var i = 0; i < this.labels.length; ++i) { + var lab = this.labels[i]; + if (node.label == null || lab.name === node.label.name) { + if (lab.kind != null && (isBreak || lab.kind === "loop")) break; + if (node.label && isBreak) break; + } + } + if (i === this.labels.length) this.raise(node.start, "Unsyntactic " + keyword); + return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement"); +}; + +pp.parseDebuggerStatement = function (node) { + this.next(); + this.semicolon(); + return this.finishNode(node, "DebuggerStatement"); +}; + +pp.parseDoStatement = function (node) { + this.next(); + this.labels.push(loopLabel); + node.body = this.parseStatement(false); + this.labels.pop(); + this.expect(tt._while); + node.test = this.parseParenExpression(); + if (this.options.ecmaVersion >= 6) this.eat(tt.semi);else this.semicolon(); + return this.finishNode(node, "DoWhileStatement"); +}; + +// Disambiguating between a `for` and a `for`/`in` or `for`/`of` +// loop is non-trivial. Basically, we have to parse the init `var` +// statement or expression, disallowing the `in` operator (see +// the second parameter to `parseExpression`), and then check +// whether the next token is `in` or `of`. When there is no init +// part (semicolon immediately after the opening parenthesis), it +// is a regular `for` loop. + +pp.parseForStatement = function (node) { + this.next(); + this.labels.push(loopLabel); + this.expect(tt.parenL); + if (this.type === tt.semi) return this.parseFor(node, null); + if (this.type === tt._var || this.type === tt._let || this.type === tt._const) { + var _init = this.startNode(), + varKind = this.type; + this.next(); + this.parseVar(_init, true, varKind); + this.finishNode(_init, "VariableDeclaration"); + if ((this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) && _init.declarations.length === 1 && !(varKind !== tt._var && _init.declarations[0].init)) return this.parseForIn(node, _init); + return this.parseFor(node, _init); + } + var refShorthandDefaultPos = { start: 0 }; + var init = this.parseExpression(true, refShorthandDefaultPos); + if (this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) { + this.toAssignable(init); + this.checkLVal(init); + return this.parseForIn(node, init); + } else if (refShorthandDefaultPos.start) { + this.unexpected(refShorthandDefaultPos.start); + } + return this.parseFor(node, init); +}; + +pp.parseFunctionStatement = function (node) { + this.next(); + return this.parseFunction(node, true); +}; + +pp.parseIfStatement = function (node) { + this.next(); + node.test = this.parseParenExpression(); + node.consequent = this.parseStatement(false); + node.alternate = this.eat(tt._else) ? this.parseStatement(false) : null; + return this.finishNode(node, "IfStatement"); +}; + +pp.parseReturnStatement = function (node) { + if (!this.inFunction && !this.options.allowReturnOutsideFunction) this.raise(this.start, "'return' outside of function"); + this.next(); + + // In `return` (and `break`/`continue`), the keywords with + // optional arguments, we eagerly look for a semicolon or the + // possibility to insert one. + + if (this.eat(tt.semi) || this.insertSemicolon()) node.argument = null;else { + node.argument = this.parseExpression();this.semicolon(); + } + return this.finishNode(node, "ReturnStatement"); +}; + +pp.parseSwitchStatement = function (node) { + this.next(); + node.discriminant = this.parseParenExpression(); + node.cases = []; + this.expect(tt.braceL); + this.labels.push(switchLabel); + + // Statements under must be grouped (by label) in SwitchCase + // nodes. `cur` is used to keep the node that we are currently + // adding statements to. + + for (var cur, sawDefault; this.type != tt.braceR;) { + if (this.type === tt._case || this.type === tt._default) { + var isCase = this.type === tt._case; + if (cur) this.finishNode(cur, "SwitchCase"); + node.cases.push(cur = this.startNode()); + cur.consequent = []; + this.next(); + if (isCase) { + cur.test = this.parseExpression(); + } else { + if (sawDefault) this.raise(this.lastTokStart, "Multiple default clauses"); + sawDefault = true; + cur.test = null; + } + this.expect(tt.colon); + } else { + if (!cur) this.unexpected(); + cur.consequent.push(this.parseStatement(true)); + } + } + if (cur) this.finishNode(cur, "SwitchCase"); + this.next(); // Closing brace + this.labels.pop(); + return this.finishNode(node, "SwitchStatement"); +}; + +pp.parseThrowStatement = function (node) { + this.next(); + if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) this.raise(this.lastTokEnd, "Illegal newline after throw"); + node.argument = this.parseExpression(); + this.semicolon(); + return this.finishNode(node, "ThrowStatement"); +}; + +// Reused empty array added for node fields that are always empty. + +var empty = []; + +pp.parseTryStatement = function (node) { + this.next(); + node.block = this.parseBlock(); + node.handler = null; + if (this.type === tt._catch) { + var clause = this.startNode(); + this.next(); + this.expect(tt.parenL); + clause.param = this.parseBindingAtom(); + this.checkLVal(clause.param, true); + this.expect(tt.parenR); + clause.guard = null; + clause.body = this.parseBlock(); + node.handler = this.finishNode(clause, "CatchClause"); + } + node.guardedHandlers = empty; + node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null; + if (!node.handler && !node.finalizer) this.raise(node.start, "Missing catch or finally clause"); + return this.finishNode(node, "TryStatement"); +}; + +pp.parseVarStatement = function (node, kind) { + this.next(); + this.parseVar(node, false, kind); + this.semicolon(); + return this.finishNode(node, "VariableDeclaration"); +}; + +pp.parseWhileStatement = function (node) { + this.next(); + node.test = this.parseParenExpression(); + this.labels.push(loopLabel); + node.body = this.parseStatement(false); + this.labels.pop(); + return this.finishNode(node, "WhileStatement"); +}; + +pp.parseWithStatement = function (node) { + if (this.strict) this.raise(this.start, "'with' in strict mode"); + this.next(); + node.object = this.parseParenExpression(); + node.body = this.parseStatement(false); + return this.finishNode(node, "WithStatement"); +}; + +pp.parseEmptyStatement = function (node) { + this.next(); + return this.finishNode(node, "EmptyStatement"); +}; + +pp.parseLabeledStatement = function (node, maybeName, expr) { + for (var i = 0; i < this.labels.length; ++i) { + if (this.labels[i].name === maybeName) this.raise(expr.start, "Label '" + maybeName + "' is already declared"); + }var kind = this.type.isLoop ? "loop" : this.type === tt._switch ? "switch" : null; + this.labels.push({ name: maybeName, kind: kind }); + node.body = this.parseStatement(true); + this.labels.pop(); + node.label = expr; + return this.finishNode(node, "LabeledStatement"); +}; + +pp.parseExpressionStatement = function (node, expr) { + node.expression = expr; + this.semicolon(); + return this.finishNode(node, "ExpressionStatement"); +}; + +// Parse a semicolon-enclosed block of statements, handling `"use +// strict"` declarations when `allowStrict` is true (used for +// function bodies). + +pp.parseBlock = function (allowStrict) { + var node = this.startNode(), + first = true, + oldStrict = undefined; + node.body = []; + this.expect(tt.braceL); + while (!this.eat(tt.braceR)) { + var stmt = this.parseStatement(true); + node.body.push(stmt); + if (first && allowStrict && this.isUseStrict(stmt)) { + oldStrict = this.strict; + this.setStrict(this.strict = true); + } + first = false; + } + if (oldStrict === false) this.setStrict(false); + return this.finishNode(node, "BlockStatement"); +}; + +// Parse a regular `for` loop. The disambiguation code in +// `parseStatement` will already have parsed the init statement or +// expression. + +pp.parseFor = function (node, init) { + node.init = init; + this.expect(tt.semi); + node.test = this.type === tt.semi ? null : this.parseExpression(); + this.expect(tt.semi); + node.update = this.type === tt.parenR ? null : this.parseExpression(); + this.expect(tt.parenR); + node.body = this.parseStatement(false); + this.labels.pop(); + return this.finishNode(node, "ForStatement"); +}; + +// Parse a `for`/`in` and `for`/`of` loop, which are almost +// same from parser's perspective. + +pp.parseForIn = function (node, init) { + var type = this.type === tt._in ? "ForInStatement" : "ForOfStatement"; + this.next(); + node.left = init; + node.right = this.parseExpression(); + this.expect(tt.parenR); + node.body = this.parseStatement(false); + this.labels.pop(); + return this.finishNode(node, type); +}; + +// Parse a list of variable declarations. + +pp.parseVar = function (node, isFor, kind) { + node.declarations = []; + node.kind = kind.keyword; + for (;;) { + var decl = this.startNode(); + this.parseVarId(decl); + if (this.eat(tt.eq)) { + decl.init = this.parseMaybeAssign(isFor); + } else if (kind === tt._const && !(this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of"))) { + this.unexpected(); + } else if (decl.id.type != "Identifier" && !(isFor && (this.type === tt._in || this.isContextual("of")))) { + this.raise(this.lastTokEnd, "Complex binding patterns require an initialization value"); + } else { + decl.init = null; + } + node.declarations.push(this.finishNode(decl, "VariableDeclarator")); + if (!this.eat(tt.comma)) break; + } + return node; +}; + +pp.parseVarId = function (decl) { + decl.id = this.parseBindingAtom(); + this.checkLVal(decl.id, true); +}; + +// Parse a function declaration or literal (depending on the +// `isStatement` parameter). + +pp.parseFunction = function (node, isStatement, allowExpressionBody) { + this.initFunction(node); + if (this.options.ecmaVersion >= 6) node.generator = this.eat(tt.star); + if (isStatement || this.type === tt.name) node.id = this.parseIdent(); + this.parseFunctionParams(node); + this.parseFunctionBody(node, allowExpressionBody); + return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression"); +}; + +pp.parseFunctionParams = function (node) { + this.expect(tt.parenL); + node.params = this.parseBindingList(tt.parenR, false, false); +}; + +// Parse a class declaration or literal (depending on the +// `isStatement` parameter). + +pp.parseClass = function (node, isStatement) { + this.next(); + this.parseClassId(node, isStatement); + this.parseClassSuper(node); + var classBody = this.startNode(); + var hadConstructor = false; + classBody.body = []; + this.expect(tt.braceL); + while (!this.eat(tt.braceR)) { + if (this.eat(tt.semi)) continue; + var method = this.startNode(); + var isGenerator = this.eat(tt.star); + var isMaybeStatic = this.type === tt.name && this.value === "static"; + this.parsePropertyName(method); + method["static"] = isMaybeStatic && this.type !== tt.parenL; + if (method["static"]) { + if (isGenerator) this.unexpected(); + isGenerator = this.eat(tt.star); + this.parsePropertyName(method); + } + method.kind = "method"; + if (!method.computed) { + var key = method.key; + + var isGetSet = false; + if (!isGenerator && key.type === "Identifier" && this.type !== tt.parenL && (key.name === "get" || key.name === "set")) { + isGetSet = true; + method.kind = key.name; + key = this.parsePropertyName(method); + } + if (!method["static"] && (key.type === "Identifier" && key.name === "constructor" || key.type === "Literal" && key.value === "constructor")) { + if (hadConstructor) this.raise(key.start, "Duplicate constructor in the same class"); + if (isGetSet) this.raise(key.start, "Constructor can't have get/set modifier"); + if (isGenerator) this.raise(key.start, "Constructor can't be a generator"); + method.kind = "constructor"; + hadConstructor = true; + } + } + this.parseClassMethod(classBody, method, isGenerator); + } + node.body = this.finishNode(classBody, "ClassBody"); + return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression"); +}; + +pp.parseClassMethod = function (classBody, method, isGenerator) { + method.value = this.parseMethod(isGenerator); + classBody.body.push(this.finishNode(method, "MethodDefinition")); +}; + +pp.parseClassId = function (node, isStatement) { + node.id = this.type === tt.name ? this.parseIdent() : isStatement ? this.unexpected() : null; +}; + +pp.parseClassSuper = function (node) { + node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts() : null; +}; + +// Parses module export declaration. + +pp.parseExport = function (node) { + this.next(); + // export * from '...' + if (this.eat(tt.star)) { + this.expectContextual("from"); + node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected(); + this.semicolon(); + return this.finishNode(node, "ExportAllDeclaration"); + } + if (this.eat(tt._default)) { + // export default ... + var expr = this.parseMaybeAssign(); + var needsSemi = true; + if (expr.type == "FunctionExpression" || expr.type == "ClassExpression") { + needsSemi = false; + if (expr.id) { + expr.type = expr.type == "FunctionExpression" ? "FunctionDeclaration" : "ClassDeclaration"; + } + } + node.declaration = expr; + if (needsSemi) this.semicolon(); + return this.finishNode(node, "ExportDefaultDeclaration"); + } + // export var|const|let|function|class ... + if (this.shouldParseExportStatement()) { + node.declaration = this.parseStatement(true); + node.specifiers = []; + node.source = null; + } else { + // export { x, y as z } [from '...'] + node.declaration = null; + node.specifiers = this.parseExportSpecifiers(); + if (this.eatContextual("from")) { + node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected(); + } else { + node.source = null; + } + this.semicolon(); + } + return this.finishNode(node, "ExportNamedDeclaration"); +}; + +pp.shouldParseExportStatement = function () { + return this.type.keyword; +}; + +// Parses a comma-separated list of module exports. + +pp.parseExportSpecifiers = function () { + var nodes = [], + first = true; + // export { x, y as z } [from '...'] + this.expect(tt.braceL); + while (!this.eat(tt.braceR)) { + if (!first) { + this.expect(tt.comma); + if (this.afterTrailingComma(tt.braceR)) break; + } else first = false; + + var node = this.startNode(); + node.local = this.parseIdent(this.type === tt._default); + node.exported = this.eatContextual("as") ? this.parseIdent(true) : node.local; + nodes.push(this.finishNode(node, "ExportSpecifier")); + } + return nodes; +}; + +// Parses import declaration. + +pp.parseImport = function (node) { + this.next(); + // import '...' + if (this.type === tt.string) { + node.specifiers = empty; + node.source = this.parseExprAtom(); + node.kind = ""; + } else { + node.specifiers = this.parseImportSpecifiers(); + this.expectContextual("from"); + node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected(); + } + this.semicolon(); + return this.finishNode(node, "ImportDeclaration"); +}; + +// Parses a comma-separated list of module imports. + +pp.parseImportSpecifiers = function () { + var nodes = [], + first = true; + if (this.type === tt.name) { + // import defaultObj, { x, y as z } from '...' + var node = this.startNode(); + node.local = this.parseIdent(); + this.checkLVal(node.local, true); + nodes.push(this.finishNode(node, "ImportDefaultSpecifier")); + if (!this.eat(tt.comma)) return nodes; + } + if (this.type === tt.star) { + var node = this.startNode(); + this.next(); + this.expectContextual("as"); + node.local = this.parseIdent(); + this.checkLVal(node.local, true); + nodes.push(this.finishNode(node, "ImportNamespaceSpecifier")); + return nodes; + } + this.expect(tt.braceL); + while (!this.eat(tt.braceR)) { + if (!first) { + this.expect(tt.comma); + if (this.afterTrailingComma(tt.braceR)) break; + } else first = false; + + var node = this.startNode(); + node.imported = this.parseIdent(true); + node.local = this.eatContextual("as") ? this.parseIdent() : node.imported; + this.checkLVal(node.local, true); + nodes.push(this.finishNode(node, "ImportSpecifier")); + } + return nodes; +}; + +},{"./state":13,"./tokentype":17,"./whitespace":19}],15:[function(_dereq_,module,exports){ +"use strict"; + +var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }; + +exports.__esModule = true; +// The algorithm used to determine whether a regexp can appear at a +// given point in the program is loosely based on sweet.js' approach. +// See https://github.com/mozilla/sweet.js/wiki/design + +var Parser = _dereq_("./state").Parser; + +var tt = _dereq_("./tokentype").types; + +var lineBreak = _dereq_("./whitespace").lineBreak; + +var TokContext = exports.TokContext = function TokContext(token, isExpr, preserveSpace, override) { + _classCallCheck(this, TokContext); + + this.token = token; + this.isExpr = isExpr; + this.preserveSpace = preserveSpace; + this.override = override; +}; + +var types = { + b_stat: new TokContext("{", false), + b_expr: new TokContext("{", true), + b_tmpl: new TokContext("${", true), + p_stat: new TokContext("(", false), + p_expr: new TokContext("(", true), + q_tmpl: new TokContext("`", true, true, function (p) { + return p.readTmplToken(); + }), + f_expr: new TokContext("function", true) +}; + +exports.types = types; +var pp = Parser.prototype; + +pp.initialContext = function () { + return [types.b_stat]; +}; + +pp.braceIsBlock = function (prevType) { + var parent = undefined; + if (prevType === tt.colon && (parent = this.curContext()).token == "{") return !parent.isExpr; + if (prevType === tt._return) return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)); + if (prevType === tt._else || prevType === tt.semi || prevType === tt.eof) return true; + if (prevType == tt.braceL) return this.curContext() === types.b_stat; + return !this.exprAllowed; +}; + +pp.updateContext = function (prevType) { + var update = undefined, + type = this.type; + if (type.keyword && prevType == tt.dot) this.exprAllowed = false;else if (update = type.updateContext) update.call(this, prevType);else this.exprAllowed = type.beforeExpr; +}; + +// Token-specific context update code + +tt.parenR.updateContext = tt.braceR.updateContext = function () { + if (this.context.length == 1) { + this.exprAllowed = true; + return; + } + var out = this.context.pop(); + if (out === types.b_stat && this.curContext() === types.f_expr) { + this.context.pop(); + this.exprAllowed = false; + } else if (out === types.b_tmpl) { + this.exprAllowed = true; + } else { + this.exprAllowed = !out.isExpr; + } +}; + +tt.braceL.updateContext = function (prevType) { + this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr); + this.exprAllowed = true; +}; + +tt.dollarBraceL.updateContext = function () { + this.context.push(types.b_tmpl); + this.exprAllowed = true; +}; + +tt.parenL.updateContext = function (prevType) { + var statementParens = prevType === tt._if || prevType === tt._for || prevType === tt._with || prevType === tt._while; + this.context.push(statementParens ? types.p_stat : types.p_expr); + this.exprAllowed = true; +}; + +tt.incDec.updateContext = function () {}; + +tt._function.updateContext = function () { + if (this.curContext() !== types.b_stat) this.context.push(types.f_expr); + this.exprAllowed = false; +}; + +tt.backQuote.updateContext = function () { + if (this.curContext() === types.q_tmpl) this.context.pop();else this.context.push(types.q_tmpl); + this.exprAllowed = false; +}; + +// tokExprAllowed stays unchanged + +},{"./state":13,"./tokentype":17,"./whitespace":19}],16:[function(_dereq_,module,exports){ +"use strict"; + +var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }; + +exports.__esModule = true; + +var _identifier = _dereq_("./identifier"); + +var isIdentifierStart = _identifier.isIdentifierStart; +var isIdentifierChar = _identifier.isIdentifierChar; + +var _tokentype = _dereq_("./tokentype"); + +var tt = _tokentype.types; +var keywordTypes = _tokentype.keywords; + +var Parser = _dereq_("./state").Parser; + +var SourceLocation = _dereq_("./location").SourceLocation; + +var _whitespace = _dereq_("./whitespace"); + +var lineBreak = _whitespace.lineBreak; +var lineBreakG = _whitespace.lineBreakG; +var isNewLine = _whitespace.isNewLine; +var nonASCIIwhitespace = _whitespace.nonASCIIwhitespace; + +// Object type used to represent tokens. Note that normally, tokens +// simply exist as properties on the parser object. This is only +// used for the onToken callback and the external tokenizer. + +var Token = exports.Token = function Token(p) { + _classCallCheck(this, Token); + + this.type = p.type; + this.value = p.value; + this.start = p.start; + this.end = p.end; + if (p.options.locations) this.loc = new SourceLocation(p, p.startLoc, p.endLoc); + if (p.options.ranges) this.range = [p.start, p.end]; +}; + +// ## Tokenizer + +var pp = Parser.prototype; + +// Are we running under Rhino? +var isRhino = typeof Packages !== "undefined"; + +// Move to the next token + +pp.next = function () { + if (this.options.onToken) this.options.onToken(new Token(this)); + + this.lastTokEnd = this.end; + this.lastTokStart = this.start; + this.lastTokEndLoc = this.endLoc; + this.lastTokStartLoc = this.startLoc; + this.nextToken(); +}; + +pp.getToken = function () { + this.next(); + return new Token(this); +}; + +// If we're in an ES6 environment, make parsers iterable +if (typeof Symbol !== "undefined") pp[Symbol.iterator] = function () { + var self = this; + return { next: function next() { + var token = self.getToken(); + return { + done: token.type === tt.eof, + value: token + }; + } }; +}; + +// Toggle strict mode. Re-reads the next number or string to please +// pedantic tests (`"use strict"; 010;` should fail). + +pp.setStrict = function (strict) { + this.strict = strict; + if (this.type !== tt.num && this.type !== tt.string) return; + this.pos = this.start; + if (this.options.locations) { + while (this.pos < this.lineStart) { + this.lineStart = this.input.lastIndexOf("\n", this.lineStart - 2) + 1; + --this.curLine; + } + } + this.nextToken(); +}; + +pp.curContext = function () { + return this.context[this.context.length - 1]; +}; + +// Read a single token, updating the parser object's token-related +// properties. + +pp.nextToken = function () { + var curContext = this.curContext(); + if (!curContext || !curContext.preserveSpace) this.skipSpace(); + + this.start = this.pos; + if (this.options.locations) this.startLoc = this.curPosition(); + if (this.pos >= this.input.length) return this.finishToken(tt.eof); + + if (curContext.override) return curContext.override(this);else this.readToken(this.fullCharCodeAtPos()); +}; + +pp.readToken = function (code) { + // Identifier or keyword. '\uXXXX' sequences are allowed in + // identifiers, so '\' also dispatches to that. + if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */) return this.readWord(); + + return this.getTokenFromCode(code); +}; + +pp.fullCharCodeAtPos = function () { + var code = this.input.charCodeAt(this.pos); + if (code <= 55295 || code >= 57344) return code; + var next = this.input.charCodeAt(this.pos + 1); + return (code << 10) + next - 56613888; +}; + +pp.skipBlockComment = function () { + var startLoc = this.options.onComment && this.options.locations && this.curPosition(); + var start = this.pos, + end = this.input.indexOf("*/", this.pos += 2); + if (end === -1) this.raise(this.pos - 2, "Unterminated comment"); + this.pos = end + 2; + if (this.options.locations) { + lineBreakG.lastIndex = start; + var match = undefined; + while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) { + ++this.curLine; + this.lineStart = match.index + match[0].length; + } + } + if (this.options.onComment) this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos, startLoc, this.options.locations && this.curPosition()); +}; + +pp.skipLineComment = function (startSkip) { + var start = this.pos; + var startLoc = this.options.onComment && this.options.locations && this.curPosition(); + var ch = this.input.charCodeAt(this.pos += startSkip); + while (this.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) { + ++this.pos; + ch = this.input.charCodeAt(this.pos); + } + if (this.options.onComment) this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos, startLoc, this.options.locations && this.curPosition()); +}; + +// Called at the start of the parse and after every token. Skips +// whitespace and comments, and. + +pp.skipSpace = function () { + while (this.pos < this.input.length) { + var ch = this.input.charCodeAt(this.pos); + if (ch === 32) { + // ' ' + ++this.pos; + } else if (ch === 13) { + ++this.pos; + var next = this.input.charCodeAt(this.pos); + if (next === 10) { + ++this.pos; + } + if (this.options.locations) { + ++this.curLine; + this.lineStart = this.pos; + } + } else if (ch === 10 || ch === 8232 || ch === 8233) { + ++this.pos; + if (this.options.locations) { + ++this.curLine; + this.lineStart = this.pos; + } + } else if (ch > 8 && ch < 14) { + ++this.pos; + } else if (ch === 47) { + // '/' + var next = this.input.charCodeAt(this.pos + 1); + if (next === 42) { + // '*' + this.skipBlockComment(); + } else if (next === 47) { + // '/' + this.skipLineComment(2); + } else break; + } else if (ch === 160) { + // '\xa0' + ++this.pos; + } else if (ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) { + ++this.pos; + } else { + break; + } + } +}; + +// Called at the end of every token. Sets `end`, `val`, and +// maintains `context` and `exprAllowed`, and skips the space after +// the token, so that the next one's `start` will point at the +// right position. + +pp.finishToken = function (type, val) { + this.end = this.pos; + if (this.options.locations) this.endLoc = this.curPosition(); + var prevType = this.type; + this.type = type; + this.value = val; + + this.updateContext(prevType); +}; + +// ### Token reading + +// This is the function that is called to fetch the next token. It +// is somewhat obscure, because it works in character codes rather +// than characters, and because operator parsing has been inlined +// into it. +// +// All in the name of speed. +// +pp.readToken_dot = function () { + var next = this.input.charCodeAt(this.pos + 1); + if (next >= 48 && next <= 57) return this.readNumber(true); + var next2 = this.input.charCodeAt(this.pos + 2); + if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { + // 46 = dot '.' + this.pos += 3; + return this.finishToken(tt.ellipsis); + } else { + ++this.pos; + return this.finishToken(tt.dot); + } +}; + +pp.readToken_slash = function () { + // '/' + var next = this.input.charCodeAt(this.pos + 1); + if (this.exprAllowed) { + ++this.pos;return this.readRegexp(); + } + if (next === 61) return this.finishOp(tt.assign, 2); + return this.finishOp(tt.slash, 1); +}; + +pp.readToken_mult_modulo = function (code) { + // '%*' + var next = this.input.charCodeAt(this.pos + 1); + if (next === 61) return this.finishOp(tt.assign, 2); + return this.finishOp(code === 42 ? tt.star : tt.modulo, 1); +}; + +pp.readToken_pipe_amp = function (code) { + // '|&' + var next = this.input.charCodeAt(this.pos + 1); + if (next === code) return this.finishOp(code === 124 ? tt.logicalOR : tt.logicalAND, 2); + if (next === 61) return this.finishOp(tt.assign, 2); + return this.finishOp(code === 124 ? tt.bitwiseOR : tt.bitwiseAND, 1); +}; + +pp.readToken_caret = function () { + // '^' + var next = this.input.charCodeAt(this.pos + 1); + if (next === 61) return this.finishOp(tt.assign, 2); + return this.finishOp(tt.bitwiseXOR, 1); +}; + +pp.readToken_plus_min = function (code) { + // '+-' + var next = this.input.charCodeAt(this.pos + 1); + if (next === code) { + if (next == 45 && this.input.charCodeAt(this.pos + 2) == 62 && lineBreak.test(this.input.slice(this.lastTokEnd, this.pos))) { + // A `-->` line comment + this.skipLineComment(3); + this.skipSpace(); + return this.nextToken(); + } + return this.finishOp(tt.incDec, 2); + } + if (next === 61) return this.finishOp(tt.assign, 2); + return this.finishOp(tt.plusMin, 1); +}; + +pp.readToken_lt_gt = function (code) { + // '<>' + var next = this.input.charCodeAt(this.pos + 1); + var size = 1; + if (next === code) { + size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2; + if (this.input.charCodeAt(this.pos + size) === 61) return this.finishOp(tt.assign, size + 1); + return this.finishOp(tt.bitShift, size); + } + if (next == 33 && code == 60 && this.input.charCodeAt(this.pos + 2) == 45 && this.input.charCodeAt(this.pos + 3) == 45) { + if (this.inModule) this.unexpected(); + // `<!--`, an XML-style comment that should be interpreted as a line comment + this.skipLineComment(4); + this.skipSpace(); + return this.nextToken(); + } + if (next === 61) size = this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2; + return this.finishOp(tt.relational, size); +}; + +pp.readToken_eq_excl = function (code) { + // '=!' + var next = this.input.charCodeAt(this.pos + 1); + if (next === 61) return this.finishOp(tt.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2); + if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { + // '=>' + this.pos += 2; + return this.finishToken(tt.arrow); + } + return this.finishOp(code === 61 ? tt.eq : tt.prefix, 1); +}; + +pp.getTokenFromCode = function (code) { + switch (code) { + // The interpretation of a dot depends on whether it is followed + // by a digit or another two dots. + case 46: + // '.' + return this.readToken_dot(); + + // Punctuation tokens. + case 40: + ++this.pos;return this.finishToken(tt.parenL); + case 41: + ++this.pos;return this.finishToken(tt.parenR); + case 59: + ++this.pos;return this.finishToken(tt.semi); + case 44: + ++this.pos;return this.finishToken(tt.comma); + case 91: + ++this.pos;return this.finishToken(tt.bracketL); + case 93: + ++this.pos;return this.finishToken(tt.bracketR); + case 123: + ++this.pos;return this.finishToken(tt.braceL); + case 125: + ++this.pos;return this.finishToken(tt.braceR); + case 58: + ++this.pos;return this.finishToken(tt.colon); + case 63: + ++this.pos;return this.finishToken(tt.question); + + case 96: + // '`' + if (this.options.ecmaVersion < 6) break; + ++this.pos; + return this.finishToken(tt.backQuote); + + case 48: + // '0' + var next = this.input.charCodeAt(this.pos + 1); + if (next === 120 || next === 88) return this.readRadixNumber(16); // '0x', '0X' - hex number + if (this.options.ecmaVersion >= 6) { + if (next === 111 || next === 79) return this.readRadixNumber(8); // '0o', '0O' - octal number + if (next === 98 || next === 66) return this.readRadixNumber(2); // '0b', '0B' - binary number + } + // Anything else beginning with a digit is an integer, octal + // number, or float. + case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57: + // 1-9 + return this.readNumber(false); + + // Quotes produce strings. + case 34:case 39: + // '"', "'" + return this.readString(code); + + // Operators are parsed inline in tiny state machines. '=' (61) is + // often referred to. `finishOp` simply skips the amount of + // characters it is given as second argument, and returns a token + // of the type given by its first argument. + + case 47: + // '/' + return this.readToken_slash(); + + case 37:case 42: + // '%*' + return this.readToken_mult_modulo(code); + + case 124:case 38: + // '|&' + return this.readToken_pipe_amp(code); + + case 94: + // '^' + return this.readToken_caret(); + + case 43:case 45: + // '+-' + return this.readToken_plus_min(code); + + case 60:case 62: + // '<>' + return this.readToken_lt_gt(code); + + case 61:case 33: + // '=!' + return this.readToken_eq_excl(code); + + case 126: + // '~' + return this.finishOp(tt.prefix, 1); + } + + this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'"); +}; + +pp.finishOp = function (type, size) { + var str = this.input.slice(this.pos, this.pos + size); + this.pos += size; + return this.finishToken(type, str); +}; + +var regexpUnicodeSupport = false; +try { + new RegExp("", "u");regexpUnicodeSupport = true; +} catch (e) {} + +// Parse a regular expression. Some context-awareness is necessary, +// since a '/' inside a '[]' set does not end the expression. + +pp.readRegexp = function () { + var escaped = undefined, + inClass = undefined, + start = this.pos; + for (;;) { + if (this.pos >= this.input.length) this.raise(start, "Unterminated regular expression"); + var ch = this.input.charAt(this.pos); + if (lineBreak.test(ch)) this.raise(start, "Unterminated regular expression"); + if (!escaped) { + if (ch === "[") inClass = true;else if (ch === "]" && inClass) inClass = false;else if (ch === "/" && !inClass) break; + escaped = ch === "\\"; + } else escaped = false; + ++this.pos; + } + var content = this.input.slice(start, this.pos); + ++this.pos; + // Need to use `readWord1` because '\uXXXX' sequences are allowed + // here (don't ask). + var mods = this.readWord1(); + var tmp = content; + if (mods) { + var validFlags = /^[gmsiy]*$/; + if (this.options.ecmaVersion >= 6) validFlags = /^[gmsiyu]*$/; + if (!validFlags.test(mods)) this.raise(start, "Invalid regular expression flag"); + if (mods.indexOf("u") >= 0 && !regexpUnicodeSupport) { + // Replace each astral symbol and every Unicode escape sequence that + // possibly represents an astral symbol or a paired surrogate with a + // single ASCII symbol to avoid throwing on regular expressions that + // are only valid in combination with the `/u` flag. + // Note: replacing with the ASCII symbol `x` might cause false + // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a + // perfectly valid pattern that is equivalent to `[a-b]`, but it would + // be replaced by `[x-b]` which throws an error. + tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|\\u\{([0-9a-fA-F]+)\}|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x"); + } + } + // Detect invalid regular expressions. + var value = null; + // Rhino's regular expression parser is flaky and throws uncatchable exceptions, + // so don't do detection if we are running under Rhino + if (!isRhino) { + try { + new RegExp(tmp); + } catch (e) { + if (e instanceof SyntaxError) this.raise(start, "Error parsing regular expression: " + e.message); + this.raise(e); + } + // Get a regular expression object for this pattern-flag pair, or `null` in + // case the current environment doesn't support the flags it uses. + try { + value = new RegExp(content, mods); + } catch (err) {} + } + return this.finishToken(tt.regexp, { pattern: content, flags: mods, value: value }); +}; + +// Read an integer in the given radix. Return null if zero digits +// were read, the integer value otherwise. When `len` is given, this +// will return `null` unless the integer has exactly `len` digits. + +pp.readInt = function (radix, len) { + var start = this.pos, + total = 0; + for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) { + var code = this.input.charCodeAt(this.pos), + val = undefined; + if (code >= 97) val = code - 97 + 10; // a + else if (code >= 65) val = code - 65 + 10; // A + else if (code >= 48 && code <= 57) val = code - 48; // 0-9 + else val = Infinity; + if (val >= radix) break; + ++this.pos; + total = total * radix + val; + } + if (this.pos === start || len != null && this.pos - start !== len) return null; + + return total; +}; + +pp.readRadixNumber = function (radix) { + this.pos += 2; // 0x + var val = this.readInt(radix); + if (val == null) this.raise(this.start + 2, "Expected number in radix " + radix); + if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number"); + return this.finishToken(tt.num, val); +}; + +// Read an integer, octal integer, or floating-point number. + +pp.readNumber = function (startsWithDot) { + var start = this.pos, + isFloat = false, + octal = this.input.charCodeAt(this.pos) === 48; + if (!startsWithDot && this.readInt(10) === null) this.raise(start, "Invalid number"); + if (this.input.charCodeAt(this.pos) === 46) { + ++this.pos; + this.readInt(10); + isFloat = true; + } + var next = this.input.charCodeAt(this.pos); + if (next === 69 || next === 101) { + // 'eE' + next = this.input.charCodeAt(++this.pos); + if (next === 43 || next === 45) ++this.pos; // '+-' + if (this.readInt(10) === null) this.raise(start, "Invalid number"); + isFloat = true; + } + if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number"); + + var str = this.input.slice(start, this.pos), + val = undefined; + if (isFloat) val = parseFloat(str);else if (!octal || str.length === 1) val = parseInt(str, 10);else if (/[89]/.test(str) || this.strict) this.raise(start, "Invalid number");else val = parseInt(str, 8); + return this.finishToken(tt.num, val); +}; + +// Read a string value, interpreting backslash-escapes. + +pp.readCodePoint = function () { + var ch = this.input.charCodeAt(this.pos), + code = undefined; + + if (ch === 123) { + if (this.options.ecmaVersion < 6) this.unexpected(); + ++this.pos; + code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos); + ++this.pos; + if (code > 1114111) this.unexpected(); + } else { + code = this.readHexChar(4); + } + return code; +}; + +function codePointToString(code) { + // UTF-16 Decoding + if (code <= 65535) { + return String.fromCharCode(code); + }return String.fromCharCode((code - 65536 >> 10) + 55296, (code - 65536 & 1023) + 56320); +} + +pp.readString = function (quote) { + var out = "", + chunkStart = ++this.pos; + for (;;) { + if (this.pos >= this.input.length) this.raise(this.start, "Unterminated string constant"); + var ch = this.input.charCodeAt(this.pos); + if (ch === quote) break; + if (ch === 92) { + // '\' + out += this.input.slice(chunkStart, this.pos); + out += this.readEscapedChar(); + chunkStart = this.pos; + } else { + if (isNewLine(ch)) this.raise(this.start, "Unterminated string constant"); + ++this.pos; + } + } + out += this.input.slice(chunkStart, this.pos++); + return this.finishToken(tt.string, out); +}; + +// Reads template string tokens. + +pp.readTmplToken = function () { + var out = "", + chunkStart = this.pos; + for (;;) { + if (this.pos >= this.input.length) this.raise(this.start, "Unterminated template"); + var ch = this.input.charCodeAt(this.pos); + if (ch === 96 || ch === 36 && this.input.charCodeAt(this.pos + 1) === 123) { + // '`', '${' + if (this.pos === this.start && this.type === tt.template) { + if (ch === 36) { + this.pos += 2; + return this.finishToken(tt.dollarBraceL); + } else { + ++this.pos; + return this.finishToken(tt.backQuote); + } + } + out += this.input.slice(chunkStart, this.pos); + return this.finishToken(tt.template, out); + } + if (ch === 92) { + // '\' + out += this.input.slice(chunkStart, this.pos); + out += this.readEscapedChar(); + chunkStart = this.pos; + } else if (isNewLine(ch)) { + out += this.input.slice(chunkStart, this.pos); + ++this.pos; + if (ch === 13 && this.input.charCodeAt(this.pos) === 10) { + ++this.pos; + out += "\n"; + } else { + out += String.fromCharCode(ch); + } + if (this.options.locations) { + ++this.curLine; + this.lineStart = this.pos; + } + chunkStart = this.pos; + } else { + ++this.pos; + } + } +}; + +// Used to read escaped characters + +pp.readEscapedChar = function () { + var ch = this.input.charCodeAt(++this.pos); + var octal = /^[0-7]+/.exec(this.input.slice(this.pos, this.pos + 3)); + if (octal) octal = octal[0]; + while (octal && parseInt(octal, 8) > 255) octal = octal.slice(0, -1); + if (octal === "0") octal = null; + ++this.pos; + if (octal) { + if (this.strict) this.raise(this.pos - 2, "Octal literal in strict mode"); + this.pos += octal.length - 1; + return String.fromCharCode(parseInt(octal, 8)); + } else { + switch (ch) { + case 110: + return "\n"; // 'n' -> '\n' + case 114: + return "\r"; // 'r' -> '\r' + case 120: + return String.fromCharCode(this.readHexChar(2)); // 'x' + case 117: + return codePointToString(this.readCodePoint()); // 'u' + case 116: + return "\t"; // 't' -> '\t' + case 98: + return "\b"; // 'b' -> '\b' + case 118: + return "\u000b"; // 'v' -> '\u000b' + case 102: + return "\f"; // 'f' -> '\f' + case 48: + return "\u0000"; // 0 -> '\0' + case 13: + if (this.input.charCodeAt(this.pos) === 10) ++this.pos; // '\r\n' + case 10: + // ' \n' + if (this.options.locations) { + this.lineStart = this.pos;++this.curLine; + } + return ""; + default: + return String.fromCharCode(ch); + } + } +}; + +// Used to read character escape sequences ('\x', '\u', '\U'). + +pp.readHexChar = function (len) { + var n = this.readInt(16, len); + if (n === null) this.raise(this.start, "Bad character escape sequence"); + return n; +}; + +// Used to signal to callers of `readWord1` whether the word +// contained any escape sequences. This is needed because words with +// escape sequences must not be interpreted as keywords. + +var containsEsc; + +// Read an identifier, and return it as a string. Sets `containsEsc` +// to whether the word contained a '\u' escape. +// +// Incrementally adds only escaped chars, adding other chunks as-is +// as a micro-optimization. + +pp.readWord1 = function () { + containsEsc = false; + var word = "", + first = true, + chunkStart = this.pos; + var astral = this.options.ecmaVersion >= 6; + while (this.pos < this.input.length) { + var ch = this.fullCharCodeAtPos(); + if (isIdentifierChar(ch, astral)) { + this.pos += ch <= 65535 ? 1 : 2; + } else if (ch === 92) { + // "\" + containsEsc = true; + word += this.input.slice(chunkStart, this.pos); + var escStart = this.pos; + if (this.input.charCodeAt(++this.pos) != 117) // "u" + this.raise(this.pos, "Expecting Unicode escape sequence \\uXXXX"); + ++this.pos; + var esc = this.readCodePoint(); + if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral)) this.raise(escStart, "Invalid Unicode escape"); + word += codePointToString(esc); + chunkStart = this.pos; + } else { + break; + } + first = false; + } + return word + this.input.slice(chunkStart, this.pos); +}; + +// Read an identifier or keyword token. Will check for reserved +// words when necessary. + +pp.readWord = function () { + var word = this.readWord1(); + var type = tt.name; + if ((this.options.ecmaVersion >= 6 || !containsEsc) && this.isKeyword(word)) type = keywordTypes[word]; + return this.finishToken(type, word); +}; + +},{"./identifier":7,"./location":8,"./state":13,"./tokentype":17,"./whitespace":19}],17:[function(_dereq_,module,exports){ +"use strict"; + +var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }; + +exports.__esModule = true; +// ## Token types + +// The assignment of fine-grained, information-carrying type objects +// allows the tokenizer to store the information it has about a +// token in a way that is very cheap for the parser to look up. + +// All token type variables start with an underscore, to make them +// easy to recognize. + +// The `beforeExpr` property is used to disambiguate between regular +// expressions and divisions. It is set on all token types that can +// be followed by an expression (thus, a slash after them would be a +// regular expression). +// +// `isLoop` marks a keyword as starting a loop, which is important +// to know when parsing a label, in order to allow or disallow +// continue jumps to that label. + +var TokenType = exports.TokenType = function TokenType(label) { + var conf = arguments[1] === undefined ? {} : arguments[1]; + + _classCallCheck(this, TokenType); + + this.label = label; + this.keyword = conf.keyword; + this.beforeExpr = !!conf.beforeExpr; + this.startsExpr = !!conf.startsExpr; + this.isLoop = !!conf.isLoop; + this.isAssign = !!conf.isAssign; + this.prefix = !!conf.prefix; + this.postfix = !!conf.postfix; + this.binop = conf.binop || null; + this.updateContext = null; +}; + +function binop(name, prec) { + return new TokenType(name, { beforeExpr: true, binop: prec }); +} +var beforeExpr = { beforeExpr: true }, + startsExpr = { startsExpr: true }; + +var types = { + num: new TokenType("num", startsExpr), + regexp: new TokenType("regexp", startsExpr), + string: new TokenType("string", startsExpr), + name: new TokenType("name", startsExpr), + eof: new TokenType("eof"), + + // Punctuation token types. + bracketL: new TokenType("[", { beforeExpr: true, startsExpr: true }), + bracketR: new TokenType("]"), + braceL: new TokenType("{", { beforeExpr: true, startsExpr: true }), + braceR: new TokenType("}"), + parenL: new TokenType("(", { beforeExpr: true, startsExpr: true }), + parenR: new TokenType(")"), + comma: new TokenType(",", beforeExpr), + semi: new TokenType(";", beforeExpr), + colon: new TokenType(":", beforeExpr), + dot: new TokenType("."), + question: new TokenType("?", beforeExpr), + arrow: new TokenType("=>", beforeExpr), + template: new TokenType("template"), + ellipsis: new TokenType("...", beforeExpr), + backQuote: new TokenType("`", startsExpr), + dollarBraceL: new TokenType("${", { beforeExpr: true, startsExpr: true }), + + // Operators. These carry several kinds of properties to help the + // parser use them properly (the presence of these properties is + // what categorizes them as operators). + // + // `binop`, when present, specifies that this operator is a binary + // operator, and will refer to its precedence. + // + // `prefix` and `postfix` mark the operator as a prefix or postfix + // unary operator. + // + // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as + // binary operators with a very low precedence, that should result + // in AssignmentExpression nodes. + + eq: new TokenType("=", { beforeExpr: true, isAssign: true }), + assign: new TokenType("_=", { beforeExpr: true, isAssign: true }), + incDec: new TokenType("++/--", { prefix: true, postfix: true, startsExpr: true }), + prefix: new TokenType("prefix", { beforeExpr: true, prefix: true, startsExpr: true }), + logicalOR: binop("||", 1), + logicalAND: binop("&&", 2), + bitwiseOR: binop("|", 3), + bitwiseXOR: binop("^", 4), + bitwiseAND: binop("&", 5), + equality: binop("==/!=", 6), + relational: binop("</>", 7), + bitShift: binop("<</>>", 8), + plusMin: new TokenType("+/-", { beforeExpr: true, binop: 9, prefix: true, startsExpr: true }), + modulo: binop("%", 10), + star: binop("*", 10), + slash: binop("/", 10) +}; + +exports.types = types; +// Map keyword names to token types. + +var keywords = {}; + +exports.keywords = keywords; +// Succinct definitions of keyword token types +function kw(name) { + var options = arguments[1] === undefined ? {} : arguments[1]; + + options.keyword = name; + keywords[name] = types["_" + name] = new TokenType(name, options); +} + +kw("break"); +kw("case", beforeExpr); +kw("catch"); +kw("continue"); +kw("debugger"); +kw("default"); +kw("do", { isLoop: true }); +kw("else", beforeExpr); +kw("finally"); +kw("for", { isLoop: true }); +kw("function", startsExpr); +kw("if"); +kw("return", beforeExpr); +kw("switch"); +kw("throw", beforeExpr); +kw("try"); +kw("var"); +kw("let"); +kw("const"); +kw("while", { isLoop: true }); +kw("with"); +kw("new", { beforeExpr: true, startsExpr: true }); +kw("this", startsExpr); +kw("super", startsExpr); +kw("class"); +kw("extends", beforeExpr); +kw("export"); +kw("import"); +kw("yield", { beforeExpr: true, startsExpr: true }); +kw("null", startsExpr); +kw("true", startsExpr); +kw("false", startsExpr); +kw("in", { beforeExpr: true, binop: 7 }); +kw("instanceof", { beforeExpr: true, binop: 7 }); +kw("typeof", { beforeExpr: true, prefix: true, startsExpr: true }); +kw("void", { beforeExpr: true, prefix: true, startsExpr: true }); +kw("delete", { beforeExpr: true, prefix: true, startsExpr: true }); + +},{}],18:[function(_dereq_,module,exports){ +"use strict"; + +exports.isArray = isArray; + +// Checks if an object has a property. + +exports.has = has; +exports.__esModule = true; + +function isArray(obj) { + return Object.prototype.toString.call(obj) === "[object Array]"; +} + +function has(obj, propName) { + return Object.prototype.hasOwnProperty.call(obj, propName); +} + +},{}],19:[function(_dereq_,module,exports){ +"use strict"; + +exports.isNewLine = isNewLine; +exports.__esModule = true; +// Matches a whole line break (where CRLF is considered a single +// line break). Used to count lines. + +var lineBreak = /\r\n?|\n|\u2028|\u2029/; +exports.lineBreak = lineBreak; +var lineBreakG = new RegExp(lineBreak.source, "g"); + +exports.lineBreakG = lineBreakG; + +function isNewLine(code) { + return code === 10 || code === 13 || code === 8232 || code == 8233; +} + +var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; +exports.nonASCIIwhitespace = nonASCIIwhitespace; + +},{}]},{},[1])(1) +});
\ No newline at end of file |