/**
|
* Modules in this bundle
|
* @license
|
*
|
* escallmatch:
|
* license: MIT (http://opensource.org/licenses/MIT)
|
* author: Takuto Wada <takuto.wada@gmail.com>
|
* homepage: https://github.com/twada/escallmatch
|
* version: 1.5.0
|
*
|
* call-matcher:
|
* license: MIT (http://opensource.org/licenses/MIT)
|
* author: Takuto Wada <takuto.wada@gmail.com>
|
* maintainers: twada <takuto.wada@gmail.com>
|
* homepage: https://github.com/twada/call-matcher
|
* version: 1.0.0
|
*
|
* core-js:
|
* license: MIT (http://opensource.org/licenses/MIT)
|
* maintainers: zloirock <zloirock@zloirock.ru>
|
* homepage: https://github.com/zloirock/core-js#readme
|
* version: 2.4.1
|
*
|
* deep-equal:
|
* license: MIT (http://opensource.org/licenses/MIT)
|
* author: James Halliday <mail@substack.net>
|
* maintainers: substack <mail@substack.net>
|
* homepage: https://github.com/substack/node-deep-equal#readme
|
* version: 1.0.1
|
*
|
* esprima:
|
* license: BSD-2-Clause (http://opensource.org/licenses/BSD-2-Clause)
|
* author: Ariya Hidayat <ariya.hidayat@gmail.com>
|
* maintainers: ariya <ariya.hidayat@gmail.com>
|
* homepage: http://esprima.org
|
* version: 2.7.2
|
*
|
* espurify:
|
* license: MIT (http://opensource.org/licenses/MIT)
|
* author: Takuto Wada <takuto.wada@gmail.com>
|
* maintainers: twada <takuto.wada@gmail.com>
|
* homepage: https://github.com/estools/espurify
|
* version: 1.6.0
|
*
|
* estraverse:
|
* license: BSD-2-Clause (http://opensource.org/licenses/BSD-2-Clause)
|
* maintainers: constellation <utatane.tea@gmail.com>, michaelficarra <npm@michael.ficarra.me>, nzakas <nicholas@nczconsulting.com>
|
* homepage: https://github.com/estools/estraverse
|
* version: 4.2.0
|
*
|
* This header is generated by licensify (https://github.com/twada/licensify)
|
*/
|
(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.escallmatch = 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){
|
/**
|
* escallmatch:
|
* ECMAScript CallExpression matcher made from function/method signature
|
*
|
* https://github.com/twada/escallmatch
|
*
|
* Copyright (c) 2014-2016 Takuto Wada
|
* Licensed under the MIT license.
|
* https://github.com/twada/escallmatch/blob/master/LICENSE
|
*/
|
'use strict';
|
/* jshint -W024 */
|
|
var esprima = _dereq_('esprima');
|
var CallMatcher = _dereq_('call-matcher');
|
var notCallExprMessage = 'Argument should be in the form of CallExpression';
|
|
function createMatcher (signatureStr, options) {
|
var ast = extractExpressionFrom(esprima.parse(signatureStr));
|
return new CallMatcher(ast, options || {});
|
}
|
|
function extractExpressionFrom (tree) {
|
var statement = tree.body[0];
|
if (statement.type !== 'ExpressionStatement') {
|
throw new Error(notCallExprMessage);
|
}
|
return statement.expression;
|
}
|
|
module.exports = createMatcher;
|
|
},{"call-matcher":2,"esprima":64}],2:[function(_dereq_,module,exports){
|
/**
|
* call-matcher:
|
* ECMAScript CallExpression matcher made from function/method signature
|
*
|
* https://github.com/twada/call-matcher
|
*
|
* Copyright (c) 2015-2016 Takuto Wada
|
* Licensed under the MIT license.
|
* https://github.com/twada/call-matcher/blob/master/MIT-LICENSE.txt
|
*/
|
'use strict';
|
/* jshint -W024 */
|
|
var estraverse = _dereq_('estraverse');
|
var espurify = _dereq_('espurify');
|
var syntax = estraverse.Syntax;
|
var hasOwn = Object.prototype.hasOwnProperty;
|
var forEach = _dereq_('core-js/library/fn/array/for-each');
|
var map = _dereq_('core-js/library/fn/array/map');
|
var filter = _dereq_('core-js/library/fn/array/filter');
|
var reduce = _dereq_('core-js/library/fn/array/reduce');
|
var indexOf = _dereq_('core-js/library/fn/array/index-of');
|
var deepEqual = _dereq_('deep-equal');
|
var notCallExprMessage = 'Argument should be in the form of CallExpression';
|
var duplicatedArgMessage = 'Duplicate argument name: ';
|
var invalidFormMessage = 'Argument should be in the form of `name` or `[name]`';
|
|
function CallMatcher (signatureAst, options) {
|
validateApiExpression(signatureAst);
|
this.visitorKeys = options.visitorKeys || estraverse.VisitorKeys;
|
if (options.astWhiteList) {
|
this.purifyAst = espurify.cloneWithWhitelist(options.astWhiteList);
|
} else {
|
this.purifyAst = espurify;
|
}
|
this.signatureAst = signatureAst;
|
this.signatureCalleeDepth = astDepth(signatureAst.callee, this.visitorKeys);
|
this.numMaxArgs = this.signatureAst.arguments.length;
|
this.numMinArgs = filter(this.signatureAst.arguments, identifiers).length;
|
}
|
|
CallMatcher.prototype.test = function (currentNode) {
|
var calleeMatched = this.isCalleeMatched(currentNode);
|
var numArgs;
|
if (calleeMatched) {
|
numArgs = currentNode.arguments.length;
|
return this.numMinArgs <= numArgs && numArgs <= this.numMaxArgs;
|
}
|
return false;
|
};
|
|
CallMatcher.prototype.matchArgument = function (currentNode, parentNode) {
|
if (isCalleeOfParent(currentNode, parentNode)) {
|
return null;
|
}
|
if (this.test(parentNode)) {
|
var indexOfCurrentArg = indexOf(parentNode.arguments, currentNode);
|
var numOptional = parentNode.arguments.length - this.numMinArgs;
|
var matchedSignatures = reduce(this.argumentSignatures(), function (accum, argSig) {
|
if (argSig.kind === 'mandatory') {
|
accum.push(argSig);
|
}
|
if (argSig.kind === 'optional' && 0 < numOptional) {
|
numOptional -= 1;
|
accum.push(argSig);
|
}
|
return accum;
|
}, []);
|
return matchedSignatures[indexOfCurrentArg];
|
}
|
return null;
|
};
|
|
CallMatcher.prototype.calleeAst = function () {
|
return this.purifyAst(this.signatureAst.callee);
|
};
|
|
CallMatcher.prototype.argumentSignatures = function () {
|
return map(this.signatureAst.arguments, toArgumentSignature);
|
};
|
|
CallMatcher.prototype.isCalleeMatched = function (node) {
|
if (!isCallExpression(node)) {
|
return false;
|
}
|
if (!this.isSameDepthAsSignatureCallee(node.callee)) {
|
return false;
|
}
|
return deepEqual(this.purifyAst(this.signatureAst.callee), this.purifyAst(node.callee));
|
};
|
|
CallMatcher.prototype.isSameDepthAsSignatureCallee = function (ast) {
|
var depth = this.signatureCalleeDepth;
|
var currentDepth = 0;
|
estraverse.traverse(ast, {
|
keys: this.visitorKeys,
|
enter: function (currentNode, parentNode) {
|
var path = this.path();
|
var pathDepth = path ? path.length : 0;
|
if (currentDepth < pathDepth) {
|
currentDepth = pathDepth;
|
}
|
if (depth < currentDepth) {
|
this['break']();
|
}
|
}
|
});
|
return (depth === currentDepth);
|
};
|
|
function toArgumentSignature (argSignatureNode) {
|
switch(argSignatureNode.type) {
|
case syntax.Identifier:
|
return {
|
name: argSignatureNode.name,
|
kind: 'mandatory'
|
};
|
case syntax.ArrayExpression:
|
return {
|
name: argSignatureNode.elements[0].name,
|
kind: 'optional'
|
};
|
default:
|
return null;
|
}
|
}
|
|
function astDepth (ast, visitorKeys) {
|
var maxDepth = 0;
|
estraverse.traverse(ast, {
|
keys: visitorKeys,
|
enter: function (currentNode, parentNode) {
|
var path = this.path();
|
var pathDepth = path ? path.length : 0;
|
if (maxDepth < pathDepth) {
|
maxDepth = pathDepth;
|
}
|
}
|
});
|
return maxDepth;
|
}
|
|
function isCallExpression (node) {
|
return node && node.type === syntax.CallExpression;
|
}
|
|
function isCalleeOfParent(currentNode, parentNode) {
|
return parentNode && currentNode &&
|
parentNode.type === syntax.CallExpression &&
|
parentNode.callee === currentNode;
|
}
|
|
function identifiers (node) {
|
return node.type === syntax.Identifier;
|
}
|
|
function validateApiExpression (callExpression) {
|
if (!callExpression || !callExpression.type) {
|
throw new Error(notCallExprMessage);
|
}
|
if (callExpression.type !== syntax.CallExpression) {
|
throw new Error(notCallExprMessage);
|
}
|
var names = {};
|
forEach(callExpression.arguments, function (arg) {
|
var name = validateArg(arg);
|
if (hasOwn.call(names, name)) {
|
throw new Error(duplicatedArgMessage + name);
|
} else {
|
names[name] = name;
|
}
|
});
|
}
|
|
function validateArg (arg) {
|
var inner;
|
switch(arg.type) {
|
case syntax.Identifier:
|
return arg.name;
|
case syntax.ArrayExpression:
|
if (arg.elements.length !== 1) {
|
throw new Error(invalidFormMessage);
|
}
|
inner = arg.elements[0];
|
if (inner.type !== syntax.Identifier) {
|
throw new Error(invalidFormMessage);
|
}
|
return inner.name;
|
default:
|
throw new Error(invalidFormMessage);
|
}
|
}
|
|
module.exports = CallMatcher;
|
|
},{"core-js/library/fn/array/filter":3,"core-js/library/fn/array/for-each":4,"core-js/library/fn/array/index-of":5,"core-js/library/fn/array/map":7,"core-js/library/fn/array/reduce":8,"deep-equal":61,"espurify":65,"estraverse":69}],3:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.filter');
|
module.exports = _dereq_('../../modules/_core').Array.filter;
|
},{"../../modules/_core":19,"../../modules/es6.array.filter":53}],4:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.for-each');
|
module.exports = _dereq_('../../modules/_core').Array.forEach;
|
},{"../../modules/_core":19,"../../modules/es6.array.for-each":54}],5:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.index-of');
|
module.exports = _dereq_('../../modules/_core').Array.indexOf;
|
},{"../../modules/_core":19,"../../modules/es6.array.index-of":55}],6:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.is-array');
|
module.exports = _dereq_('../../modules/_core').Array.isArray;
|
},{"../../modules/_core":19,"../../modules/es6.array.is-array":56}],7:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.map');
|
module.exports = _dereq_('../../modules/_core').Array.map;
|
},{"../../modules/_core":19,"../../modules/es6.array.map":57}],8:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.array.reduce');
|
module.exports = _dereq_('../../modules/_core').Array.reduce;
|
},{"../../modules/_core":19,"../../modules/es6.array.reduce":58}],9:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.object.assign');
|
module.exports = _dereq_('../../modules/_core').Object.assign;
|
},{"../../modules/_core":19,"../../modules/es6.object.assign":59}],10:[function(_dereq_,module,exports){
|
_dereq_('../../modules/es6.object.keys');
|
module.exports = _dereq_('../../modules/_core').Object.keys;
|
},{"../../modules/_core":19,"../../modules/es6.object.keys":60}],11:[function(_dereq_,module,exports){
|
module.exports = function(it){
|
if(typeof it != 'function')throw TypeError(it + ' is not a function!');
|
return it;
|
};
|
},{}],12:[function(_dereq_,module,exports){
|
var isObject = _dereq_('./_is-object');
|
module.exports = function(it){
|
if(!isObject(it))throw TypeError(it + ' is not an object!');
|
return it;
|
};
|
},{"./_is-object":33}],13:[function(_dereq_,module,exports){
|
// false -> Array#indexOf
|
// true -> Array#includes
|
var toIObject = _dereq_('./_to-iobject')
|
, toLength = _dereq_('./_to-length')
|
, toIndex = _dereq_('./_to-index');
|
module.exports = function(IS_INCLUDES){
|
return function($this, el, fromIndex){
|
var O = toIObject($this)
|
, length = toLength(O.length)
|
, index = toIndex(fromIndex, length)
|
, value;
|
// Array#includes uses SameValueZero equality algorithm
|
if(IS_INCLUDES && el != el)while(length > index){
|
value = O[index++];
|
if(value != value)return true;
|
// Array#toIndex ignores holes, Array#includes - not
|
} else for(;length > index; index++)if(IS_INCLUDES || index in O){
|
if(O[index] === el)return IS_INCLUDES || index || 0;
|
} return !IS_INCLUDES && -1;
|
};
|
};
|
},{"./_to-index":45,"./_to-iobject":47,"./_to-length":48}],14:[function(_dereq_,module,exports){
|
// 0 -> Array#forEach
|
// 1 -> Array#map
|
// 2 -> Array#filter
|
// 3 -> Array#some
|
// 4 -> Array#every
|
// 5 -> Array#find
|
// 6 -> Array#findIndex
|
var ctx = _dereq_('./_ctx')
|
, IObject = _dereq_('./_iobject')
|
, toObject = _dereq_('./_to-object')
|
, toLength = _dereq_('./_to-length')
|
, asc = _dereq_('./_array-species-create');
|
module.exports = function(TYPE, $create){
|
var IS_MAP = TYPE == 1
|
, IS_FILTER = TYPE == 2
|
, IS_SOME = TYPE == 3
|
, IS_EVERY = TYPE == 4
|
, IS_FIND_INDEX = TYPE == 6
|
, NO_HOLES = TYPE == 5 || IS_FIND_INDEX
|
, create = $create || asc;
|
return function($this, callbackfn, that){
|
var O = toObject($this)
|
, self = IObject(O)
|
, f = ctx(callbackfn, that, 3)
|
, length = toLength(self.length)
|
, index = 0
|
, result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined
|
, val, res;
|
for(;length > index; index++)if(NO_HOLES || index in self){
|
val = self[index];
|
res = f(val, index, O);
|
if(TYPE){
|
if(IS_MAP)result[index] = res; // map
|
else if(res)switch(TYPE){
|
case 3: return true; // some
|
case 5: return val; // find
|
case 6: return index; // findIndex
|
case 2: result.push(val); // filter
|
} else if(IS_EVERY)return false; // every
|
}
|
}
|
return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;
|
};
|
};
|
},{"./_array-species-create":17,"./_ctx":20,"./_iobject":31,"./_to-length":48,"./_to-object":49}],15:[function(_dereq_,module,exports){
|
var aFunction = _dereq_('./_a-function')
|
, toObject = _dereq_('./_to-object')
|
, IObject = _dereq_('./_iobject')
|
, toLength = _dereq_('./_to-length');
|
|
module.exports = function(that, callbackfn, aLen, memo, isRight){
|
aFunction(callbackfn);
|
var O = toObject(that)
|
, self = IObject(O)
|
, length = toLength(O.length)
|
, index = isRight ? length - 1 : 0
|
, i = isRight ? -1 : 1;
|
if(aLen < 2)for(;;){
|
if(index in self){
|
memo = self[index];
|
index += i;
|
break;
|
}
|
index += i;
|
if(isRight ? index < 0 : length <= index){
|
throw TypeError('Reduce of empty array with no initial value');
|
}
|
}
|
for(;isRight ? index >= 0 : length > index; index += i)if(index in self){
|
memo = callbackfn(memo, self[index], index, O);
|
}
|
return memo;
|
};
|
},{"./_a-function":11,"./_iobject":31,"./_to-length":48,"./_to-object":49}],16:[function(_dereq_,module,exports){
|
var isObject = _dereq_('./_is-object')
|
, isArray = _dereq_('./_is-array')
|
, SPECIES = _dereq_('./_wks')('species');
|
|
module.exports = function(original){
|
var C;
|
if(isArray(original)){
|
C = original.constructor;
|
// cross-realm fallback
|
if(typeof C == 'function' && (C === Array || isArray(C.prototype)))C = undefined;
|
if(isObject(C)){
|
C = C[SPECIES];
|
if(C === null)C = undefined;
|
}
|
} return C === undefined ? Array : C;
|
};
|
},{"./_is-array":32,"./_is-object":33,"./_wks":52}],17:[function(_dereq_,module,exports){
|
// 9.4.2.3 ArraySpeciesCreate(originalArray, length)
|
var speciesConstructor = _dereq_('./_array-species-constructor');
|
|
module.exports = function(original, length){
|
return new (speciesConstructor(original))(length);
|
};
|
},{"./_array-species-constructor":16}],18:[function(_dereq_,module,exports){
|
var toString = {}.toString;
|
|
module.exports = function(it){
|
return toString.call(it).slice(8, -1);
|
};
|
},{}],19:[function(_dereq_,module,exports){
|
var core = module.exports = {version: '2.4.0'};
|
if(typeof __e == 'number')__e = core; // eslint-disable-line no-undef
|
},{}],20:[function(_dereq_,module,exports){
|
// optional / simple context binding
|
var aFunction = _dereq_('./_a-function');
|
module.exports = function(fn, that, length){
|
aFunction(fn);
|
if(that === undefined)return fn;
|
switch(length){
|
case 1: return function(a){
|
return fn.call(that, a);
|
};
|
case 2: return function(a, b){
|
return fn.call(that, a, b);
|
};
|
case 3: return function(a, b, c){
|
return fn.call(that, a, b, c);
|
};
|
}
|
return function(/* ...args */){
|
return fn.apply(that, arguments);
|
};
|
};
|
},{"./_a-function":11}],21:[function(_dereq_,module,exports){
|
// 7.2.1 RequireObjectCoercible(argument)
|
module.exports = function(it){
|
if(it == undefined)throw TypeError("Can't call method on " + it);
|
return it;
|
};
|
},{}],22:[function(_dereq_,module,exports){
|
// Thank's IE8 for his funny defineProperty
|
module.exports = !_dereq_('./_fails')(function(){
|
return Object.defineProperty({}, 'a', {get: function(){ return 7; }}).a != 7;
|
});
|
},{"./_fails":26}],23:[function(_dereq_,module,exports){
|
var isObject = _dereq_('./_is-object')
|
, document = _dereq_('./_global').document
|
// in old IE typeof document.createElement is 'object'
|
, is = isObject(document) && isObject(document.createElement);
|
module.exports = function(it){
|
return is ? document.createElement(it) : {};
|
};
|
},{"./_global":27,"./_is-object":33}],24:[function(_dereq_,module,exports){
|
// IE 8- don't enum bug keys
|
module.exports = (
|
'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
|
).split(',');
|
},{}],25:[function(_dereq_,module,exports){
|
var global = _dereq_('./_global')
|
, core = _dereq_('./_core')
|
, ctx = _dereq_('./_ctx')
|
, hide = _dereq_('./_hide')
|
, PROTOTYPE = 'prototype';
|
|
var $export = function(type, name, source){
|
var IS_FORCED = type & $export.F
|
, IS_GLOBAL = type & $export.G
|
, IS_STATIC = type & $export.S
|
, IS_PROTO = type & $export.P
|
, IS_BIND = type & $export.B
|
, IS_WRAP = type & $export.W
|
, exports = IS_GLOBAL ? core : core[name] || (core[name] = {})
|
, expProto = exports[PROTOTYPE]
|
, target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]
|
, key, own, out;
|
if(IS_GLOBAL)source = name;
|
for(key in source){
|
// contains in native
|
own = !IS_FORCED && target && target[key] !== undefined;
|
if(own && key in exports)continue;
|
// export native or passed
|
out = own ? target[key] : source[key];
|
// prevent global pollution for namespaces
|
exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
|
// bind timers to global for call from export context
|
: IS_BIND && own ? ctx(out, global)
|
// wrap global constructors for prevent change them in library
|
: IS_WRAP && target[key] == out ? (function(C){
|
var F = function(a, b, c){
|
if(this instanceof C){
|
switch(arguments.length){
|
case 0: return new C;
|
case 1: return new C(a);
|
case 2: return new C(a, b);
|
} return new C(a, b, c);
|
} return C.apply(this, arguments);
|
};
|
F[PROTOTYPE] = C[PROTOTYPE];
|
return F;
|
// make static versions for prototype methods
|
})(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
|
// export proto methods to core.%CONSTRUCTOR%.methods.%NAME%
|
if(IS_PROTO){
|
(exports.virtual || (exports.virtual = {}))[key] = out;
|
// export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%
|
if(type & $export.R && expProto && !expProto[key])hide(expProto, key, out);
|
}
|
}
|
};
|
// type bitmap
|
$export.F = 1; // forced
|
$export.G = 2; // global
|
$export.S = 4; // static
|
$export.P = 8; // proto
|
$export.B = 16; // bind
|
$export.W = 32; // wrap
|
$export.U = 64; // safe
|
$export.R = 128; // real proto method for `library`
|
module.exports = $export;
|
},{"./_core":19,"./_ctx":20,"./_global":27,"./_hide":29}],26:[function(_dereq_,module,exports){
|
module.exports = function(exec){
|
try {
|
return !!exec();
|
} catch(e){
|
return true;
|
}
|
};
|
},{}],27:[function(_dereq_,module,exports){
|
// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
|
var global = module.exports = typeof window != 'undefined' && window.Math == Math
|
? window : typeof self != 'undefined' && self.Math == Math ? self : Function('return this')();
|
if(typeof __g == 'number')__g = global; // eslint-disable-line no-undef
|
},{}],28:[function(_dereq_,module,exports){
|
var hasOwnProperty = {}.hasOwnProperty;
|
module.exports = function(it, key){
|
return hasOwnProperty.call(it, key);
|
};
|
},{}],29:[function(_dereq_,module,exports){
|
var dP = _dereq_('./_object-dp')
|
, createDesc = _dereq_('./_property-desc');
|
module.exports = _dereq_('./_descriptors') ? function(object, key, value){
|
return dP.f(object, key, createDesc(1, value));
|
} : function(object, key, value){
|
object[key] = value;
|
return object;
|
};
|
},{"./_descriptors":22,"./_object-dp":35,"./_property-desc":41}],30:[function(_dereq_,module,exports){
|
module.exports = !_dereq_('./_descriptors') && !_dereq_('./_fails')(function(){
|
return Object.defineProperty(_dereq_('./_dom-create')('div'), 'a', {get: function(){ return 7; }}).a != 7;
|
});
|
},{"./_descriptors":22,"./_dom-create":23,"./_fails":26}],31:[function(_dereq_,module,exports){
|
// fallback for non-array-like ES3 and non-enumerable old V8 strings
|
var cof = _dereq_('./_cof');
|
module.exports = Object('z').propertyIsEnumerable(0) ? Object : function(it){
|
return cof(it) == 'String' ? it.split('') : Object(it);
|
};
|
},{"./_cof":18}],32:[function(_dereq_,module,exports){
|
// 7.2.2 IsArray(argument)
|
var cof = _dereq_('./_cof');
|
module.exports = Array.isArray || function isArray(arg){
|
return cof(arg) == 'Array';
|
};
|
},{"./_cof":18}],33:[function(_dereq_,module,exports){
|
module.exports = function(it){
|
return typeof it === 'object' ? it !== null : typeof it === 'function';
|
};
|
},{}],34:[function(_dereq_,module,exports){
|
'use strict';
|
// 19.1.2.1 Object.assign(target, source, ...)
|
var getKeys = _dereq_('./_object-keys')
|
, gOPS = _dereq_('./_object-gops')
|
, pIE = _dereq_('./_object-pie')
|
, toObject = _dereq_('./_to-object')
|
, IObject = _dereq_('./_iobject')
|
, $assign = Object.assign;
|
|
// should work with symbols and should have deterministic property order (V8 bug)
|
module.exports = !$assign || _dereq_('./_fails')(function(){
|
var A = {}
|
, B = {}
|
, S = Symbol()
|
, K = 'abcdefghijklmnopqrst';
|
A[S] = 7;
|
K.split('').forEach(function(k){ B[k] = k; });
|
return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;
|
}) ? function assign(target, source){ // eslint-disable-line no-unused-vars
|
var T = toObject(target)
|
, aLen = arguments.length
|
, index = 1
|
, getSymbols = gOPS.f
|
, isEnum = pIE.f;
|
while(aLen > index){
|
var S = IObject(arguments[index++])
|
, keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S)
|
, length = keys.length
|
, j = 0
|
, key;
|
while(length > j)if(isEnum.call(S, key = keys[j++]))T[key] = S[key];
|
} return T;
|
} : $assign;
|
},{"./_fails":26,"./_iobject":31,"./_object-gops":36,"./_object-keys":38,"./_object-pie":39,"./_to-object":49}],35:[function(_dereq_,module,exports){
|
var anObject = _dereq_('./_an-object')
|
, IE8_DOM_DEFINE = _dereq_('./_ie8-dom-define')
|
, toPrimitive = _dereq_('./_to-primitive')
|
, dP = Object.defineProperty;
|
|
exports.f = _dereq_('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes){
|
anObject(O);
|
P = toPrimitive(P, true);
|
anObject(Attributes);
|
if(IE8_DOM_DEFINE)try {
|
return dP(O, P, Attributes);
|
} catch(e){ /* empty */ }
|
if('get' in Attributes || 'set' in Attributes)throw TypeError('Accessors not supported!');
|
if('value' in Attributes)O[P] = Attributes.value;
|
return O;
|
};
|
},{"./_an-object":12,"./_descriptors":22,"./_ie8-dom-define":30,"./_to-primitive":50}],36:[function(_dereq_,module,exports){
|
exports.f = Object.getOwnPropertySymbols;
|
},{}],37:[function(_dereq_,module,exports){
|
var has = _dereq_('./_has')
|
, toIObject = _dereq_('./_to-iobject')
|
, arrayIndexOf = _dereq_('./_array-includes')(false)
|
, IE_PROTO = _dereq_('./_shared-key')('IE_PROTO');
|
|
module.exports = function(object, names){
|
var O = toIObject(object)
|
, i = 0
|
, result = []
|
, key;
|
for(key in O)if(key != IE_PROTO)has(O, key) && result.push(key);
|
// Don't enum bug & hidden keys
|
while(names.length > i)if(has(O, key = names[i++])){
|
~arrayIndexOf(result, key) || result.push(key);
|
}
|
return result;
|
};
|
},{"./_array-includes":13,"./_has":28,"./_shared-key":42,"./_to-iobject":47}],38:[function(_dereq_,module,exports){
|
// 19.1.2.14 / 15.2.3.14 Object.keys(O)
|
var $keys = _dereq_('./_object-keys-internal')
|
, enumBugKeys = _dereq_('./_enum-bug-keys');
|
|
module.exports = Object.keys || function keys(O){
|
return $keys(O, enumBugKeys);
|
};
|
},{"./_enum-bug-keys":24,"./_object-keys-internal":37}],39:[function(_dereq_,module,exports){
|
exports.f = {}.propertyIsEnumerable;
|
},{}],40:[function(_dereq_,module,exports){
|
// most Object methods by ES6 should accept primitives
|
var $export = _dereq_('./_export')
|
, core = _dereq_('./_core')
|
, fails = _dereq_('./_fails');
|
module.exports = function(KEY, exec){
|
var fn = (core.Object || {})[KEY] || Object[KEY]
|
, exp = {};
|
exp[KEY] = exec(fn);
|
$export($export.S + $export.F * fails(function(){ fn(1); }), 'Object', exp);
|
};
|
},{"./_core":19,"./_export":25,"./_fails":26}],41:[function(_dereq_,module,exports){
|
module.exports = function(bitmap, value){
|
return {
|
enumerable : !(bitmap & 1),
|
configurable: !(bitmap & 2),
|
writable : !(bitmap & 4),
|
value : value
|
};
|
};
|
},{}],42:[function(_dereq_,module,exports){
|
var shared = _dereq_('./_shared')('keys')
|
, uid = _dereq_('./_uid');
|
module.exports = function(key){
|
return shared[key] || (shared[key] = uid(key));
|
};
|
},{"./_shared":43,"./_uid":51}],43:[function(_dereq_,module,exports){
|
var global = _dereq_('./_global')
|
, SHARED = '__core-js_shared__'
|
, store = global[SHARED] || (global[SHARED] = {});
|
module.exports = function(key){
|
return store[key] || (store[key] = {});
|
};
|
},{"./_global":27}],44:[function(_dereq_,module,exports){
|
var fails = _dereq_('./_fails');
|
|
module.exports = function(method, arg){
|
return !!method && fails(function(){
|
arg ? method.call(null, function(){}, 1) : method.call(null);
|
});
|
};
|
},{"./_fails":26}],45:[function(_dereq_,module,exports){
|
var toInteger = _dereq_('./_to-integer')
|
, max = Math.max
|
, min = Math.min;
|
module.exports = function(index, length){
|
index = toInteger(index);
|
return index < 0 ? max(index + length, 0) : min(index, length);
|
};
|
},{"./_to-integer":46}],46:[function(_dereq_,module,exports){
|
// 7.1.4 ToInteger
|
var ceil = Math.ceil
|
, floor = Math.floor;
|
module.exports = function(it){
|
return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
|
};
|
},{}],47:[function(_dereq_,module,exports){
|
// to indexed object, toObject with fallback for non-array-like ES3 strings
|
var IObject = _dereq_('./_iobject')
|
, defined = _dereq_('./_defined');
|
module.exports = function(it){
|
return IObject(defined(it));
|
};
|
},{"./_defined":21,"./_iobject":31}],48:[function(_dereq_,module,exports){
|
// 7.1.15 ToLength
|
var toInteger = _dereq_('./_to-integer')
|
, min = Math.min;
|
module.exports = function(it){
|
return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
|
};
|
},{"./_to-integer":46}],49:[function(_dereq_,module,exports){
|
// 7.1.13 ToObject(argument)
|
var defined = _dereq_('./_defined');
|
module.exports = function(it){
|
return Object(defined(it));
|
};
|
},{"./_defined":21}],50:[function(_dereq_,module,exports){
|
// 7.1.1 ToPrimitive(input [, PreferredType])
|
var isObject = _dereq_('./_is-object');
|
// instead of the ES6 spec version, we didn't implement @@toPrimitive case
|
// and the second argument - flag - preferred type is a string
|
module.exports = function(it, S){
|
if(!isObject(it))return it;
|
var fn, val;
|
if(S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
|
if(typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it)))return val;
|
if(!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
|
throw TypeError("Can't convert object to primitive value");
|
};
|
},{"./_is-object":33}],51:[function(_dereq_,module,exports){
|
var id = 0
|
, px = Math.random();
|
module.exports = function(key){
|
return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
|
};
|
},{}],52:[function(_dereq_,module,exports){
|
var store = _dereq_('./_shared')('wks')
|
, uid = _dereq_('./_uid')
|
, Symbol = _dereq_('./_global').Symbol
|
, USE_SYMBOL = typeof Symbol == 'function';
|
|
var $exports = module.exports = function(name){
|
return store[name] || (store[name] =
|
USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));
|
};
|
|
$exports.store = store;
|
},{"./_global":27,"./_shared":43,"./_uid":51}],53:[function(_dereq_,module,exports){
|
'use strict';
|
var $export = _dereq_('./_export')
|
, $filter = _dereq_('./_array-methods')(2);
|
|
$export($export.P + $export.F * !_dereq_('./_strict-method')([].filter, true), 'Array', {
|
// 22.1.3.7 / 15.4.4.20 Array.prototype.filter(callbackfn [, thisArg])
|
filter: function filter(callbackfn /* , thisArg */){
|
return $filter(this, callbackfn, arguments[1]);
|
}
|
});
|
},{"./_array-methods":14,"./_export":25,"./_strict-method":44}],54:[function(_dereq_,module,exports){
|
'use strict';
|
var $export = _dereq_('./_export')
|
, $forEach = _dereq_('./_array-methods')(0)
|
, STRICT = _dereq_('./_strict-method')([].forEach, true);
|
|
$export($export.P + $export.F * !STRICT, 'Array', {
|
// 22.1.3.10 / 15.4.4.18 Array.prototype.forEach(callbackfn [, thisArg])
|
forEach: function forEach(callbackfn /* , thisArg */){
|
return $forEach(this, callbackfn, arguments[1]);
|
}
|
});
|
},{"./_array-methods":14,"./_export":25,"./_strict-method":44}],55:[function(_dereq_,module,exports){
|
'use strict';
|
var $export = _dereq_('./_export')
|
, $indexOf = _dereq_('./_array-includes')(false)
|
, $native = [].indexOf
|
, NEGATIVE_ZERO = !!$native && 1 / [1].indexOf(1, -0) < 0;
|
|
$export($export.P + $export.F * (NEGATIVE_ZERO || !_dereq_('./_strict-method')($native)), 'Array', {
|
// 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])
|
indexOf: function indexOf(searchElement /*, fromIndex = 0 */){
|
return NEGATIVE_ZERO
|
// convert -0 to +0
|
? $native.apply(this, arguments) || 0
|
: $indexOf(this, searchElement, arguments[1]);
|
}
|
});
|
},{"./_array-includes":13,"./_export":25,"./_strict-method":44}],56:[function(_dereq_,module,exports){
|
// 22.1.2.2 / 15.4.3.2 Array.isArray(arg)
|
var $export = _dereq_('./_export');
|
|
$export($export.S, 'Array', {isArray: _dereq_('./_is-array')});
|
},{"./_export":25,"./_is-array":32}],57:[function(_dereq_,module,exports){
|
'use strict';
|
var $export = _dereq_('./_export')
|
, $map = _dereq_('./_array-methods')(1);
|
|
$export($export.P + $export.F * !_dereq_('./_strict-method')([].map, true), 'Array', {
|
// 22.1.3.15 / 15.4.4.19 Array.prototype.map(callbackfn [, thisArg])
|
map: function map(callbackfn /* , thisArg */){
|
return $map(this, callbackfn, arguments[1]);
|
}
|
});
|
},{"./_array-methods":14,"./_export":25,"./_strict-method":44}],58:[function(_dereq_,module,exports){
|
'use strict';
|
var $export = _dereq_('./_export')
|
, $reduce = _dereq_('./_array-reduce');
|
|
$export($export.P + $export.F * !_dereq_('./_strict-method')([].reduce, true), 'Array', {
|
// 22.1.3.18 / 15.4.4.21 Array.prototype.reduce(callbackfn [, initialValue])
|
reduce: function reduce(callbackfn /* , initialValue */){
|
return $reduce(this, callbackfn, arguments.length, arguments[1], false);
|
}
|
});
|
},{"./_array-reduce":15,"./_export":25,"./_strict-method":44}],59:[function(_dereq_,module,exports){
|
// 19.1.3.1 Object.assign(target, source)
|
var $export = _dereq_('./_export');
|
|
$export($export.S + $export.F, 'Object', {assign: _dereq_('./_object-assign')});
|
},{"./_export":25,"./_object-assign":34}],60:[function(_dereq_,module,exports){
|
// 19.1.2.14 Object.keys(O)
|
var toObject = _dereq_('./_to-object')
|
, $keys = _dereq_('./_object-keys');
|
|
_dereq_('./_object-sap')('keys', function(){
|
return function keys(it){
|
return $keys(toObject(it));
|
};
|
});
|
},{"./_object-keys":38,"./_object-sap":40,"./_to-object":49}],61:[function(_dereq_,module,exports){
|
var pSlice = Array.prototype.slice;
|
var objectKeys = _dereq_('./lib/keys.js');
|
var isArguments = _dereq_('./lib/is_arguments.js');
|
|
var deepEqual = module.exports = function (actual, expected, opts) {
|
if (!opts) opts = {};
|
// 7.1. All identical values are equivalent, as determined by ===.
|
if (actual === expected) {
|
return true;
|
|
} else if (actual instanceof Date && expected instanceof Date) {
|
return actual.getTime() === expected.getTime();
|
|
// 7.3. Other pairs that do not both pass typeof value == 'object',
|
// equivalence is determined by ==.
|
} else if (!actual || !expected || typeof actual != 'object' && typeof expected != 'object') {
|
return opts.strict ? actual === expected : actual == expected;
|
|
// 7.4. For all other Object pairs, including Array objects, equivalence is
|
// determined by having the same number of owned properties (as verified
|
// with Object.prototype.hasOwnProperty.call), the same set of keys
|
// (although not necessarily the same order), equivalent values for every
|
// corresponding key, and an identical 'prototype' property. Note: this
|
// accounts for both named and indexed properties on Arrays.
|
} else {
|
return objEquiv(actual, expected, opts);
|
}
|
}
|
|
function isUndefinedOrNull(value) {
|
return value === null || value === undefined;
|
}
|
|
function isBuffer (x) {
|
if (!x || typeof x !== 'object' || typeof x.length !== 'number') return false;
|
if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {
|
return false;
|
}
|
if (x.length > 0 && typeof x[0] !== 'number') return false;
|
return true;
|
}
|
|
function objEquiv(a, b, opts) {
|
var i, key;
|
if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
|
return false;
|
// an identical 'prototype' property.
|
if (a.prototype !== b.prototype) return false;
|
//~~~I've managed to break Object.keys through screwy arguments passing.
|
// Converting to array solves the problem.
|
if (isArguments(a)) {
|
if (!isArguments(b)) {
|
return false;
|
}
|
a = pSlice.call(a);
|
b = pSlice.call(b);
|
return deepEqual(a, b, opts);
|
}
|
if (isBuffer(a)) {
|
if (!isBuffer(b)) {
|
return false;
|
}
|
if (a.length !== b.length) return false;
|
for (i = 0; i < a.length; i++) {
|
if (a[i] !== b[i]) return false;
|
}
|
return true;
|
}
|
try {
|
var ka = objectKeys(a),
|
kb = objectKeys(b);
|
} catch (e) {//happens when one is a string literal and the other isn't
|
return false;
|
}
|
// having the same number of owned properties (keys incorporates
|
// hasOwnProperty)
|
if (ka.length != kb.length)
|
return false;
|
//the same set of keys (although not necessarily the same order),
|
ka.sort();
|
kb.sort();
|
//~~~cheap key test
|
for (i = ka.length - 1; i >= 0; i--) {
|
if (ka[i] != kb[i])
|
return false;
|
}
|
//equivalent values for every corresponding key, and
|
//~~~possibly expensive deep test
|
for (i = ka.length - 1; i >= 0; i--) {
|
key = ka[i];
|
if (!deepEqual(a[key], b[key], opts)) return false;
|
}
|
return typeof a === typeof b;
|
}
|
|
},{"./lib/is_arguments.js":62,"./lib/keys.js":63}],62:[function(_dereq_,module,exports){
|
var supportsArgumentsClass = (function(){
|
return Object.prototype.toString.call(arguments)
|
})() == '[object Arguments]';
|
|
exports = module.exports = supportsArgumentsClass ? supported : unsupported;
|
|
exports.supported = supported;
|
function supported(object) {
|
return Object.prototype.toString.call(object) == '[object Arguments]';
|
};
|
|
exports.unsupported = unsupported;
|
function unsupported(object){
|
return object &&
|
typeof object == 'object' &&
|
typeof object.length == 'number' &&
|
Object.prototype.hasOwnProperty.call(object, 'callee') &&
|
!Object.prototype.propertyIsEnumerable.call(object, 'callee') ||
|
false;
|
};
|
|
},{}],63:[function(_dereq_,module,exports){
|
exports = module.exports = typeof Object.keys === 'function'
|
? Object.keys : shim;
|
|
exports.shim = shim;
|
function shim (obj) {
|
var keys = [];
|
for (var key in obj) keys.push(key);
|
return keys;
|
}
|
|
},{}],64:[function(_dereq_,module,exports){
|
/*
|
Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
modification, are permitted provided that the following conditions are met:
|
|
* Redistributions of source code must retain the above copyright
|
notice, this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
notice, this list of conditions and the following disclaimer in the
|
documentation and/or other materials provided with the distribution.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
*/
|
|
(function (root, factory) {
|
'use strict';
|
|
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
|
// Rhino, and plain browser loading.
|
|
/* istanbul ignore next */
|
if (typeof define === 'function' && define.amd) {
|
define(['exports'], factory);
|
} else if (typeof exports !== 'undefined') {
|
factory(exports);
|
} else {
|
factory((root.esprima = {}));
|
}
|
}(this, function (exports) {
|
'use strict';
|
|
var Token,
|
TokenName,
|
FnExprTokens,
|
Syntax,
|
PlaceHolders,
|
Messages,
|
Regex,
|
source,
|
strict,
|
index,
|
lineNumber,
|
lineStart,
|
hasLineTerminator,
|
lastIndex,
|
lastLineNumber,
|
lastLineStart,
|
startIndex,
|
startLineNumber,
|
startLineStart,
|
scanning,
|
length,
|
lookahead,
|
state,
|
extra,
|
isBindingElement,
|
isAssignmentTarget,
|
firstCoverInitializedNameError;
|
|
Token = {
|
BooleanLiteral: 1,
|
EOF: 2,
|
Identifier: 3,
|
Keyword: 4,
|
NullLiteral: 5,
|
NumericLiteral: 6,
|
Punctuator: 7,
|
StringLiteral: 8,
|
RegularExpression: 9,
|
Template: 10
|
};
|
|
TokenName = {};
|
TokenName[Token.BooleanLiteral] = 'Boolean';
|
TokenName[Token.EOF] = '<end>';
|
TokenName[Token.Identifier] = 'Identifier';
|
TokenName[Token.Keyword] = 'Keyword';
|
TokenName[Token.NullLiteral] = 'Null';
|
TokenName[Token.NumericLiteral] = 'Numeric';
|
TokenName[Token.Punctuator] = 'Punctuator';
|
TokenName[Token.StringLiteral] = 'String';
|
TokenName[Token.RegularExpression] = 'RegularExpression';
|
TokenName[Token.Template] = 'Template';
|
|
// A function following one of those tokens is an expression.
|
FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
|
'return', 'case', 'delete', 'throw', 'void',
|
// assignment operators
|
'=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
|
'&=', '|=', '^=', ',',
|
// binary/unary operators
|
'+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
|
'|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
|
'<=', '<', '>', '!=', '!=='];
|
|
Syntax = {
|
AssignmentExpression: 'AssignmentExpression',
|
AssignmentPattern: 'AssignmentPattern',
|
ArrayExpression: 'ArrayExpression',
|
ArrayPattern: 'ArrayPattern',
|
ArrowFunctionExpression: 'ArrowFunctionExpression',
|
BlockStatement: 'BlockStatement',
|
BinaryExpression: 'BinaryExpression',
|
BreakStatement: 'BreakStatement',
|
CallExpression: 'CallExpression',
|
CatchClause: 'CatchClause',
|
ClassBody: 'ClassBody',
|
ClassDeclaration: 'ClassDeclaration',
|
ClassExpression: 'ClassExpression',
|
ConditionalExpression: 'ConditionalExpression',
|
ContinueStatement: 'ContinueStatement',
|
DoWhileStatement: 'DoWhileStatement',
|
DebuggerStatement: 'DebuggerStatement',
|
EmptyStatement: 'EmptyStatement',
|
ExportAllDeclaration: 'ExportAllDeclaration',
|
ExportDefaultDeclaration: 'ExportDefaultDeclaration',
|
ExportNamedDeclaration: 'ExportNamedDeclaration',
|
ExportSpecifier: 'ExportSpecifier',
|
ExpressionStatement: 'ExpressionStatement',
|
ForStatement: 'ForStatement',
|
ForOfStatement: 'ForOfStatement',
|
ForInStatement: 'ForInStatement',
|
FunctionDeclaration: 'FunctionDeclaration',
|
FunctionExpression: 'FunctionExpression',
|
Identifier: 'Identifier',
|
IfStatement: 'IfStatement',
|
ImportDeclaration: 'ImportDeclaration',
|
ImportDefaultSpecifier: 'ImportDefaultSpecifier',
|
ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
|
ImportSpecifier: 'ImportSpecifier',
|
Literal: 'Literal',
|
LabeledStatement: 'LabeledStatement',
|
LogicalExpression: 'LogicalExpression',
|
MemberExpression: 'MemberExpression',
|
MetaProperty: 'MetaProperty',
|
MethodDefinition: 'MethodDefinition',
|
NewExpression: 'NewExpression',
|
ObjectExpression: 'ObjectExpression',
|
ObjectPattern: 'ObjectPattern',
|
Program: 'Program',
|
Property: 'Property',
|
RestElement: 'RestElement',
|
ReturnStatement: 'ReturnStatement',
|
SequenceExpression: 'SequenceExpression',
|
SpreadElement: 'SpreadElement',
|
Super: 'Super',
|
SwitchCase: 'SwitchCase',
|
SwitchStatement: 'SwitchStatement',
|
TaggedTemplateExpression: 'TaggedTemplateExpression',
|
TemplateElement: 'TemplateElement',
|
TemplateLiteral: 'TemplateLiteral',
|
ThisExpression: 'ThisExpression',
|
ThrowStatement: 'ThrowStatement',
|
TryStatement: 'TryStatement',
|
UnaryExpression: 'UnaryExpression',
|
UpdateExpression: 'UpdateExpression',
|
VariableDeclaration: 'VariableDeclaration',
|
VariableDeclarator: 'VariableDeclarator',
|
WhileStatement: 'WhileStatement',
|
WithStatement: 'WithStatement',
|
YieldExpression: 'YieldExpression'
|
};
|
|
PlaceHolders = {
|
ArrowParameterPlaceHolder: 'ArrowParameterPlaceHolder'
|
};
|
|
// Error messages should be identical to V8.
|
Messages = {
|
UnexpectedToken: 'Unexpected token %0',
|
UnexpectedNumber: 'Unexpected number',
|
UnexpectedString: 'Unexpected string',
|
UnexpectedIdentifier: 'Unexpected identifier',
|
UnexpectedReserved: 'Unexpected reserved word',
|
UnexpectedTemplate: 'Unexpected quasi %0',
|
UnexpectedEOS: 'Unexpected end of input',
|
NewlineAfterThrow: 'Illegal newline after throw',
|
InvalidRegExp: 'Invalid regular expression',
|
UnterminatedRegExp: 'Invalid regular expression: missing /',
|
InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
|
InvalidLHSInForIn: 'Invalid left-hand side in for-in',
|
InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
|
MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
|
NoCatchOrFinally: 'Missing catch or finally after try',
|
UnknownLabel: 'Undefined label \'%0\'',
|
Redeclaration: '%0 \'%1\' has already been declared',
|
IllegalContinue: 'Illegal continue statement',
|
IllegalBreak: 'Illegal break statement',
|
IllegalReturn: 'Illegal return statement',
|
StrictModeWith: 'Strict mode code may not include a with statement',
|
StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
|
StrictVarName: 'Variable name may not be eval or arguments in strict mode',
|
StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
|
StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
|
StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
|
StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
|
StrictDelete: 'Delete of an unqualified identifier in strict mode.',
|
StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
|
StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
|
StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
|
StrictReservedWord: 'Use of future reserved word in strict mode',
|
TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
|
ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
|
DefaultRestParameter: 'Unexpected token =',
|
ObjectPatternAsRestParameter: 'Unexpected token {',
|
DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
|
ConstructorSpecialMethod: 'Class constructor may not be an accessor',
|
DuplicateConstructor: 'A class may only have one constructor',
|
StaticPrototype: 'Classes may not have static property named prototype',
|
MissingFromClause: 'Unexpected token',
|
NoAsAfterImportNamespace: 'Unexpected token',
|
InvalidModuleSpecifier: 'Unexpected token',
|
IllegalImportDeclaration: 'Unexpected token',
|
IllegalExportDeclaration: 'Unexpected token',
|
DuplicateBinding: 'Duplicate binding %0'
|
};
|
|
// See also tools/generate-unicode-regex.js.
|
Regex = {
|
// ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart:
|
NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B2\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309B-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE4\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDDA\uDE00-\uDE11\uDE13-\uDE2B\uDEB0-\uDEDE\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF5D-\uDF61]|\uD805[\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDD80-\uDDAE\uDE00-\uDE2F\uDE44\uDE80-\uDEAA]|\uD806[\uDCA0-\uDCDF\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF98]|\uD809[\uDC00-\uDC6E]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50\uDF93-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD83A[\uDC00-\uDCC4]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD87E[\uDC00-\uDE1D]/,
|
|
// ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierPart:
|
NonAsciiIdentifierPart: /[\xAA\xB5\xB7\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1369-\u1371\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDD0-\uDDDA\uDE00-\uDE11\uDE13-\uDE37\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF01-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF98]|\uD809[\uDC00-\uDC6E]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
|
};
|
|
// Ensure the condition is true, otherwise throw an error.
|
// This is only to have a better contract semantic, i.e. another safety net
|
// to catch a logic error. The condition shall be fulfilled in normal case.
|
// Do NOT use this to enforce a certain condition on any user input.
|
|
function assert(condition, message) {
|
/* istanbul ignore if */
|
if (!condition) {
|
throw new Error('ASSERT: ' + message);
|
}
|
}
|
|
function isDecimalDigit(ch) {
|
return (ch >= 0x30 && ch <= 0x39); // 0..9
|
}
|
|
function isHexDigit(ch) {
|
return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
|
}
|
|
function isOctalDigit(ch) {
|
return '01234567'.indexOf(ch) >= 0;
|
}
|
|
function octalToDecimal(ch) {
|
// \0 is not octal escape sequence
|
var octal = (ch !== '0'), code = '01234567'.indexOf(ch);
|
|
if (index < length && isOctalDigit(source[index])) {
|
octal = true;
|
code = code * 8 + '01234567'.indexOf(source[index++]);
|
|
// 3 digits are only allowed when string starts
|
// with 0, 1, 2, 3
|
if ('0123'.indexOf(ch) >= 0 &&
|
index < length &&
|
isOctalDigit(source[index])) {
|
code = code * 8 + '01234567'.indexOf(source[index++]);
|
}
|
}
|
|
return {
|
code: code,
|
octal: octal
|
};
|
}
|
|
// ECMA-262 11.2 White Space
|
|
function isWhiteSpace(ch) {
|
return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) ||
|
(ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0);
|
}
|
|
// ECMA-262 11.3 Line Terminators
|
|
function isLineTerminator(ch) {
|
return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029);
|
}
|
|
// ECMA-262 11.6 Identifier Names and Identifiers
|
|
function fromCodePoint(cp) {
|
return (cp < 0x10000) ? String.fromCharCode(cp) :
|
String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) +
|
String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023));
|
}
|
|
function isIdentifierStart(ch) {
|
return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore)
|
(ch >= 0x41 && ch <= 0x5A) || // A..Z
|
(ch >= 0x61 && ch <= 0x7A) || // a..z
|
(ch === 0x5C) || // \ (backslash)
|
((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch)));
|
}
|
|
function isIdentifierPart(ch) {
|
return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore)
|
(ch >= 0x41 && ch <= 0x5A) || // A..Z
|
(ch >= 0x61 && ch <= 0x7A) || // a..z
|
(ch >= 0x30 && ch <= 0x39) || // 0..9
|
(ch === 0x5C) || // \ (backslash)
|
((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch)));
|
}
|
|
// ECMA-262 11.6.2.2 Future Reserved Words
|
|
function isFutureReservedWord(id) {
|
switch (id) {
|
case 'enum':
|
case 'export':
|
case 'import':
|
case 'super':
|
return true;
|
default:
|
return false;
|
}
|
}
|
|
function isStrictModeReservedWord(id) {
|
switch (id) {
|
case 'implements':
|
case 'interface':
|
case 'package':
|
case 'private':
|
case 'protected':
|
case 'public':
|
case 'static':
|
case 'yield':
|
case 'let':
|
return true;
|
default:
|
return false;
|
}
|
}
|
|
function isRestrictedWord(id) {
|
return id === 'eval' || id === 'arguments';
|
}
|
|
// ECMA-262 11.6.2.1 Keywords
|
|
function isKeyword(id) {
|
switch (id.length) {
|
case 2:
|
return (id === 'if') || (id === 'in') || (id === 'do');
|
case 3:
|
return (id === 'var') || (id === 'for') || (id === 'new') ||
|
(id === 'try') || (id === 'let');
|
case 4:
|
return (id === 'this') || (id === 'else') || (id === 'case') ||
|
(id === 'void') || (id === 'with') || (id === 'enum');
|
case 5:
|
return (id === 'while') || (id === 'break') || (id === 'catch') ||
|
(id === 'throw') || (id === 'const') || (id === 'yield') ||
|
(id === 'class') || (id === 'super');
|
case 6:
|
return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
|
(id === 'switch') || (id === 'export') || (id === 'import');
|
case 7:
|
return (id === 'default') || (id === 'finally') || (id === 'extends');
|
case 8:
|
return (id === 'function') || (id === 'continue') || (id === 'debugger');
|
case 10:
|
return (id === 'instanceof');
|
default:
|
return false;
|
}
|
}
|
|
// ECMA-262 11.4 Comments
|
|
function addComment(type, value, start, end, loc) {
|
var comment;
|
|
assert(typeof start === 'number', 'Comment must have valid position');
|
|
state.lastCommentStart = start;
|
|
comment = {
|
type: type,
|
value: value
|
};
|
if (extra.range) {
|
comment.range = [start, end];
|
}
|
if (extra.loc) {
|
comment.loc = loc;
|
}
|
extra.comments.push(comment);
|
if (extra.attachComment) {
|
extra.leadingComments.push(comment);
|
extra.trailingComments.push(comment);
|
}
|
if (extra.tokenize) {
|
comment.type = comment.type + 'Comment';
|
if (extra.delegate) {
|
comment = extra.delegate(comment);
|
}
|
extra.tokens.push(comment);
|
}
|
}
|
|
function skipSingleLineComment(offset) {
|
var start, loc, ch, comment;
|
|
start = index - offset;
|
loc = {
|
start: {
|
line: lineNumber,
|
column: index - lineStart - offset
|
}
|
};
|
|
while (index < length) {
|
ch = source.charCodeAt(index);
|
++index;
|
if (isLineTerminator(ch)) {
|
hasLineTerminator = true;
|
if (extra.comments) {
|
comment = source.slice(start + offset, index - 1);
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart - 1
|
};
|
addComment('Line', comment, start, index - 1, loc);
|
}
|
if (ch === 13 && source.charCodeAt(index) === 10) {
|
++index;
|
}
|
++lineNumber;
|
lineStart = index;
|
return;
|
}
|
}
|
|
if (extra.comments) {
|
comment = source.slice(start + offset, index);
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart
|
};
|
addComment('Line', comment, start, index, loc);
|
}
|
}
|
|
function skipMultiLineComment() {
|
var start, loc, ch, comment;
|
|
if (extra.comments) {
|
start = index - 2;
|
loc = {
|
start: {
|
line: lineNumber,
|
column: index - lineStart - 2
|
}
|
};
|
}
|
|
while (index < length) {
|
ch = source.charCodeAt(index);
|
if (isLineTerminator(ch)) {
|
if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) {
|
++index;
|
}
|
hasLineTerminator = true;
|
++lineNumber;
|
++index;
|
lineStart = index;
|
} else if (ch === 0x2A) {
|
// Block comment ends with '*/'.
|
if (source.charCodeAt(index + 1) === 0x2F) {
|
++index;
|
++index;
|
if (extra.comments) {
|
comment = source.slice(start + 2, index - 2);
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart
|
};
|
addComment('Block', comment, start, index, loc);
|
}
|
return;
|
}
|
++index;
|
} else {
|
++index;
|
}
|
}
|
|
// Ran off the end of the file - the whole thing is a comment
|
if (extra.comments) {
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart
|
};
|
comment = source.slice(start + 2, index);
|
addComment('Block', comment, start, index, loc);
|
}
|
tolerateUnexpectedToken();
|
}
|
|
function skipComment() {
|
var ch, start;
|
hasLineTerminator = false;
|
|
start = (index === 0);
|
while (index < length) {
|
ch = source.charCodeAt(index);
|
|
if (isWhiteSpace(ch)) {
|
++index;
|
} else if (isLineTerminator(ch)) {
|
hasLineTerminator = true;
|
++index;
|
if (ch === 0x0D && source.charCodeAt(index) === 0x0A) {
|
++index;
|
}
|
++lineNumber;
|
lineStart = index;
|
start = true;
|
} else if (ch === 0x2F) { // U+002F is '/'
|
ch = source.charCodeAt(index + 1);
|
if (ch === 0x2F) {
|
++index;
|
++index;
|
skipSingleLineComment(2);
|
start = true;
|
} else if (ch === 0x2A) { // U+002A is '*'
|
++index;
|
++index;
|
skipMultiLineComment();
|
} else {
|
break;
|
}
|
} else if (start && ch === 0x2D) { // U+002D is '-'
|
// U+003E is '>'
|
if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) {
|
// '-->' is a single-line comment
|
index += 3;
|
skipSingleLineComment(3);
|
} else {
|
break;
|
}
|
} else if (ch === 0x3C) { // U+003C is '<'
|
if (source.slice(index + 1, index + 4) === '!--') {
|
++index; // `<`
|
++index; // `!`
|
++index; // `-`
|
++index; // `-`
|
skipSingleLineComment(4);
|
} else {
|
break;
|
}
|
} else {
|
break;
|
}
|
}
|
}
|
|
function scanHexEscape(prefix) {
|
var i, len, ch, code = 0;
|
|
len = (prefix === 'u') ? 4 : 2;
|
for (i = 0; i < len; ++i) {
|
if (index < length && isHexDigit(source[index])) {
|
ch = source[index++];
|
code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
|
} else {
|
return '';
|
}
|
}
|
return String.fromCharCode(code);
|
}
|
|
function scanUnicodeCodePointEscape() {
|
var ch, code;
|
|
ch = source[index];
|
code = 0;
|
|
// At least, one hex digit is required.
|
if (ch === '}') {
|
throwUnexpectedToken();
|
}
|
|
while (index < length) {
|
ch = source[index++];
|
if (!isHexDigit(ch)) {
|
break;
|
}
|
code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
|
}
|
|
if (code > 0x10FFFF || ch !== '}') {
|
throwUnexpectedToken();
|
}
|
|
return fromCodePoint(code);
|
}
|
|
function codePointAt(i) {
|
var cp, first, second;
|
|
cp = source.charCodeAt(i);
|
if (cp >= 0xD800 && cp <= 0xDBFF) {
|
second = source.charCodeAt(i + 1);
|
if (second >= 0xDC00 && second <= 0xDFFF) {
|
first = cp;
|
cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
|
}
|
}
|
|
return cp;
|
}
|
|
function getComplexIdentifier() {
|
var cp, ch, id;
|
|
cp = codePointAt(index);
|
id = fromCodePoint(cp);
|
index += id.length;
|
|
// '\u' (U+005C, U+0075) denotes an escaped character.
|
if (cp === 0x5C) {
|
if (source.charCodeAt(index) !== 0x75) {
|
throwUnexpectedToken();
|
}
|
++index;
|
if (source[index] === '{') {
|
++index;
|
ch = scanUnicodeCodePointEscape();
|
} else {
|
ch = scanHexEscape('u');
|
cp = ch.charCodeAt(0);
|
if (!ch || ch === '\\' || !isIdentifierStart(cp)) {
|
throwUnexpectedToken();
|
}
|
}
|
id = ch;
|
}
|
|
while (index < length) {
|
cp = codePointAt(index);
|
if (!isIdentifierPart(cp)) {
|
break;
|
}
|
ch = fromCodePoint(cp);
|
id += ch;
|
index += ch.length;
|
|
// '\u' (U+005C, U+0075) denotes an escaped character.
|
if (cp === 0x5C) {
|
id = id.substr(0, id.length - 1);
|
if (source.charCodeAt(index) !== 0x75) {
|
throwUnexpectedToken();
|
}
|
++index;
|
if (source[index] === '{') {
|
++index;
|
ch = scanUnicodeCodePointEscape();
|
} else {
|
ch = scanHexEscape('u');
|
cp = ch.charCodeAt(0);
|
if (!ch || ch === '\\' || !isIdentifierPart(cp)) {
|
throwUnexpectedToken();
|
}
|
}
|
id += ch;
|
}
|
}
|
|
return id;
|
}
|
|
function getIdentifier() {
|
var start, ch;
|
|
start = index++;
|
while (index < length) {
|
ch = source.charCodeAt(index);
|
if (ch === 0x5C) {
|
// Blackslash (U+005C) marks Unicode escape sequence.
|
index = start;
|
return getComplexIdentifier();
|
} else if (ch >= 0xD800 && ch < 0xDFFF) {
|
// Need to handle surrogate pairs.
|
index = start;
|
return getComplexIdentifier();
|
}
|
if (isIdentifierPart(ch)) {
|
++index;
|
} else {
|
break;
|
}
|
}
|
|
return source.slice(start, index);
|
}
|
|
function scanIdentifier() {
|
var start, id, type;
|
|
start = index;
|
|
// Backslash (U+005C) starts an escaped character.
|
id = (source.charCodeAt(index) === 0x5C) ? getComplexIdentifier() : getIdentifier();
|
|
// There is no keyword or literal with only one character.
|
// Thus, it must be an identifier.
|
if (id.length === 1) {
|
type = Token.Identifier;
|
} else if (isKeyword(id)) {
|
type = Token.Keyword;
|
} else if (id === 'null') {
|
type = Token.NullLiteral;
|
} else if (id === 'true' || id === 'false') {
|
type = Token.BooleanLiteral;
|
} else {
|
type = Token.Identifier;
|
}
|
|
return {
|
type: type,
|
value: id,
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
|
// ECMA-262 11.7 Punctuators
|
|
function scanPunctuator() {
|
var token, str;
|
|
token = {
|
type: Token.Punctuator,
|
value: '',
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: index,
|
end: index
|
};
|
|
// Check for most common single-character punctuators.
|
str = source[index];
|
switch (str) {
|
|
case '(':
|
if (extra.tokenize) {
|
extra.openParenToken = extra.tokenValues.length;
|
}
|
++index;
|
break;
|
|
case '{':
|
if (extra.tokenize) {
|
extra.openCurlyToken = extra.tokenValues.length;
|
}
|
state.curlyStack.push('{');
|
++index;
|
break;
|
|
case '.':
|
++index;
|
if (source[index] === '.' && source[index + 1] === '.') {
|
// Spread operator: ...
|
index += 2;
|
str = '...';
|
}
|
break;
|
|
case '}':
|
++index;
|
state.curlyStack.pop();
|
break;
|
case ')':
|
case ';':
|
case ',':
|
case '[':
|
case ']':
|
case ':':
|
case '?':
|
case '~':
|
++index;
|
break;
|
|
default:
|
// 4-character punctuator.
|
str = source.substr(index, 4);
|
if (str === '>>>=') {
|
index += 4;
|
} else {
|
|
// 3-character punctuators.
|
str = str.substr(0, 3);
|
if (str === '===' || str === '!==' || str === '>>>' ||
|
str === '<<=' || str === '>>=') {
|
index += 3;
|
} else {
|
|
// 2-character punctuators.
|
str = str.substr(0, 2);
|
if (str === '&&' || str === '||' || str === '==' || str === '!=' ||
|
str === '+=' || str === '-=' || str === '*=' || str === '/=' ||
|
str === '++' || str === '--' || str === '<<' || str === '>>' ||
|
str === '&=' || str === '|=' || str === '^=' || str === '%=' ||
|
str === '<=' || str === '>=' || str === '=>') {
|
index += 2;
|
} else {
|
|
// 1-character punctuators.
|
str = source[index];
|
if ('<>=!+-*%&|^/'.indexOf(str) >= 0) {
|
++index;
|
}
|
}
|
}
|
}
|
}
|
|
if (index === token.start) {
|
throwUnexpectedToken();
|
}
|
|
token.end = index;
|
token.value = str;
|
return token;
|
}
|
|
// ECMA-262 11.8.3 Numeric Literals
|
|
function scanHexLiteral(start) {
|
var number = '';
|
|
while (index < length) {
|
if (!isHexDigit(source[index])) {
|
break;
|
}
|
number += source[index++];
|
}
|
|
if (number.length === 0) {
|
throwUnexpectedToken();
|
}
|
|
if (isIdentifierStart(source.charCodeAt(index))) {
|
throwUnexpectedToken();
|
}
|
|
return {
|
type: Token.NumericLiteral,
|
value: parseInt('0x' + number, 16),
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
function scanBinaryLiteral(start) {
|
var ch, number;
|
|
number = '';
|
|
while (index < length) {
|
ch = source[index];
|
if (ch !== '0' && ch !== '1') {
|
break;
|
}
|
number += source[index++];
|
}
|
|
if (number.length === 0) {
|
// only 0b or 0B
|
throwUnexpectedToken();
|
}
|
|
if (index < length) {
|
ch = source.charCodeAt(index);
|
/* istanbul ignore else */
|
if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
|
throwUnexpectedToken();
|
}
|
}
|
|
return {
|
type: Token.NumericLiteral,
|
value: parseInt(number, 2),
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
function scanOctalLiteral(prefix, start) {
|
var number, octal;
|
|
if (isOctalDigit(prefix)) {
|
octal = true;
|
number = '0' + source[index++];
|
} else {
|
octal = false;
|
++index;
|
number = '';
|
}
|
|
while (index < length) {
|
if (!isOctalDigit(source[index])) {
|
break;
|
}
|
number += source[index++];
|
}
|
|
if (!octal && number.length === 0) {
|
// only 0o or 0O
|
throwUnexpectedToken();
|
}
|
|
if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
|
throwUnexpectedToken();
|
}
|
|
return {
|
type: Token.NumericLiteral,
|
value: parseInt(number, 8),
|
octal: octal,
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
function isImplicitOctalLiteral() {
|
var i, ch;
|
|
// Implicit octal, unless there is a non-octal digit.
|
// (Annex B.1.1 on Numeric Literals)
|
for (i = index + 1; i < length; ++i) {
|
ch = source[i];
|
if (ch === '8' || ch === '9') {
|
return false;
|
}
|
if (!isOctalDigit(ch)) {
|
return true;
|
}
|
}
|
|
return true;
|
}
|
|
function scanNumericLiteral() {
|
var number, start, ch;
|
|
ch = source[index];
|
assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
|
'Numeric literal must start with a decimal digit or a decimal point');
|
|
start = index;
|
number = '';
|
if (ch !== '.') {
|
number = source[index++];
|
ch = source[index];
|
|
// Hex number starts with '0x'.
|
// Octal number starts with '0'.
|
// Octal number in ES6 starts with '0o'.
|
// Binary number in ES6 starts with '0b'.
|
if (number === '0') {
|
if (ch === 'x' || ch === 'X') {
|
++index;
|
return scanHexLiteral(start);
|
}
|
if (ch === 'b' || ch === 'B') {
|
++index;
|
return scanBinaryLiteral(start);
|
}
|
if (ch === 'o' || ch === 'O') {
|
return scanOctalLiteral(ch, start);
|
}
|
|
if (isOctalDigit(ch)) {
|
if (isImplicitOctalLiteral()) {
|
return scanOctalLiteral(ch, start);
|
}
|
}
|
}
|
|
while (isDecimalDigit(source.charCodeAt(index))) {
|
number += source[index++];
|
}
|
ch = source[index];
|
}
|
|
if (ch === '.') {
|
number += source[index++];
|
while (isDecimalDigit(source.charCodeAt(index))) {
|
number += source[index++];
|
}
|
ch = source[index];
|
}
|
|
if (ch === 'e' || ch === 'E') {
|
number += source[index++];
|
|
ch = source[index];
|
if (ch === '+' || ch === '-') {
|
number += source[index++];
|
}
|
if (isDecimalDigit(source.charCodeAt(index))) {
|
while (isDecimalDigit(source.charCodeAt(index))) {
|
number += source[index++];
|
}
|
} else {
|
throwUnexpectedToken();
|
}
|
}
|
|
if (isIdentifierStart(source.charCodeAt(index))) {
|
throwUnexpectedToken();
|
}
|
|
return {
|
type: Token.NumericLiteral,
|
value: parseFloat(number),
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
// ECMA-262 11.8.4 String Literals
|
|
function scanStringLiteral() {
|
var str = '', quote, start, ch, unescaped, octToDec, octal = false;
|
|
quote = source[index];
|
assert((quote === '\'' || quote === '"'),
|
'String literal must starts with a quote');
|
|
start = index;
|
++index;
|
|
while (index < length) {
|
ch = source[index++];
|
|
if (ch === quote) {
|
quote = '';
|
break;
|
} else if (ch === '\\') {
|
ch = source[index++];
|
if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
|
switch (ch) {
|
case 'u':
|
case 'x':
|
if (source[index] === '{') {
|
++index;
|
str += scanUnicodeCodePointEscape();
|
} else {
|
unescaped = scanHexEscape(ch);
|
if (!unescaped) {
|
throw throwUnexpectedToken();
|
}
|
str += unescaped;
|
}
|
break;
|
case 'n':
|
str += '\n';
|
break;
|
case 'r':
|
str += '\r';
|
break;
|
case 't':
|
str += '\t';
|
break;
|
case 'b':
|
str += '\b';
|
break;
|
case 'f':
|
str += '\f';
|
break;
|
case 'v':
|
str += '\x0B';
|
break;
|
case '8':
|
case '9':
|
str += ch;
|
tolerateUnexpectedToken();
|
break;
|
|
default:
|
if (isOctalDigit(ch)) {
|
octToDec = octalToDecimal(ch);
|
|
octal = octToDec.octal || octal;
|
str += String.fromCharCode(octToDec.code);
|
} else {
|
str += ch;
|
}
|
break;
|
}
|
} else {
|
++lineNumber;
|
if (ch === '\r' && source[index] === '\n') {
|
++index;
|
}
|
lineStart = index;
|
}
|
} else if (isLineTerminator(ch.charCodeAt(0))) {
|
break;
|
} else {
|
str += ch;
|
}
|
}
|
|
if (quote !== '') {
|
index = start;
|
throwUnexpectedToken();
|
}
|
|
return {
|
type: Token.StringLiteral,
|
value: str,
|
octal: octal,
|
lineNumber: startLineNumber,
|
lineStart: startLineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
// ECMA-262 11.8.6 Template Literal Lexical Components
|
|
function scanTemplate() {
|
var cooked = '', ch, start, rawOffset, terminated, head, tail, restore, unescaped;
|
|
terminated = false;
|
tail = false;
|
start = index;
|
head = (source[index] === '`');
|
rawOffset = 2;
|
|
++index;
|
|
while (index < length) {
|
ch = source[index++];
|
if (ch === '`') {
|
rawOffset = 1;
|
tail = true;
|
terminated = true;
|
break;
|
} else if (ch === '$') {
|
if (source[index] === '{') {
|
state.curlyStack.push('${');
|
++index;
|
terminated = true;
|
break;
|
}
|
cooked += ch;
|
} else if (ch === '\\') {
|
ch = source[index++];
|
if (!isLineTerminator(ch.charCodeAt(0))) {
|
switch (ch) {
|
case 'n':
|
cooked += '\n';
|
break;
|
case 'r':
|
cooked += '\r';
|
break;
|
case 't':
|
cooked += '\t';
|
break;
|
case 'u':
|
case 'x':
|
if (source[index] === '{') {
|
++index;
|
cooked += scanUnicodeCodePointEscape();
|
} else {
|
restore = index;
|
unescaped = scanHexEscape(ch);
|
if (unescaped) {
|
cooked += unescaped;
|
} else {
|
index = restore;
|
cooked += ch;
|
}
|
}
|
break;
|
case 'b':
|
cooked += '\b';
|
break;
|
case 'f':
|
cooked += '\f';
|
break;
|
case 'v':
|
cooked += '\v';
|
break;
|
|
default:
|
if (ch === '0') {
|
if (isDecimalDigit(source.charCodeAt(index))) {
|
// Illegal: \01 \02 and so on
|
throwError(Messages.TemplateOctalLiteral);
|
}
|
cooked += '\0';
|
} else if (isOctalDigit(ch)) {
|
// Illegal: \1 \2
|
throwError(Messages.TemplateOctalLiteral);
|
} else {
|
cooked += ch;
|
}
|
break;
|
}
|
} else {
|
++lineNumber;
|
if (ch === '\r' && source[index] === '\n') {
|
++index;
|
}
|
lineStart = index;
|
}
|
} else if (isLineTerminator(ch.charCodeAt(0))) {
|
++lineNumber;
|
if (ch === '\r' && source[index] === '\n') {
|
++index;
|
}
|
lineStart = index;
|
cooked += '\n';
|
} else {
|
cooked += ch;
|
}
|
}
|
|
if (!terminated) {
|
throwUnexpectedToken();
|
}
|
|
if (!head) {
|
state.curlyStack.pop();
|
}
|
|
return {
|
type: Token.Template,
|
value: {
|
cooked: cooked,
|
raw: source.slice(start + 1, index - rawOffset)
|
},
|
head: head,
|
tail: tail,
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
// ECMA-262 11.8.5 Regular Expression Literals
|
|
function testRegExp(pattern, flags) {
|
// The BMP character to use as a replacement for astral symbols when
|
// translating an ES6 "u"-flagged pattern to an ES5-compatible
|
// approximation.
|
// Note: replacing with '\uFFFF' enables false positives in unlikely
|
// scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid
|
// pattern that would not be detected by this substitution.
|
var astralSubstitute = '\uFFFF',
|
tmp = pattern;
|
|
if (flags.indexOf('u') >= 0) {
|
tmp = tmp
|
// Replace every Unicode escape sequence with the equivalent
|
// BMP character or a constant ASCII code point in the case of
|
// astral symbols. (See the above note on `astralSubstitute`
|
// for more information.)
|
.replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) {
|
var codePoint = parseInt($1 || $2, 16);
|
if (codePoint > 0x10FFFF) {
|
throwUnexpectedToken(null, Messages.InvalidRegExp);
|
}
|
if (codePoint <= 0xFFFF) {
|
return String.fromCharCode(codePoint);
|
}
|
return astralSubstitute;
|
})
|
// Replace each paired surrogate with a single ASCII symbol to
|
// avoid throwing on regular expressions that are only valid in
|
// combination with the "u" flag.
|
.replace(
|
/[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
|
astralSubstitute
|
);
|
}
|
|
// First, detect invalid regular expressions.
|
try {
|
RegExp(tmp);
|
} catch (e) {
|
throwUnexpectedToken(null, Messages.InvalidRegExp);
|
}
|
|
// Return a regular expression object for this pattern-flag pair, or
|
// `null` in case the current environment doesn't support the flags it
|
// uses.
|
try {
|
return new RegExp(pattern, flags);
|
} catch (exception) {
|
return null;
|
}
|
}
|
|
function scanRegExpBody() {
|
var ch, str, classMarker, terminated, body;
|
|
ch = source[index];
|
assert(ch === '/', 'Regular expression literal must start with a slash');
|
str = source[index++];
|
|
classMarker = false;
|
terminated = false;
|
while (index < length) {
|
ch = source[index++];
|
str += ch;
|
if (ch === '\\') {
|
ch = source[index++];
|
// ECMA-262 7.8.5
|
if (isLineTerminator(ch.charCodeAt(0))) {
|
throwUnexpectedToken(null, Messages.UnterminatedRegExp);
|
}
|
str += ch;
|
} else if (isLineTerminator(ch.charCodeAt(0))) {
|
throwUnexpectedToken(null, Messages.UnterminatedRegExp);
|
} else if (classMarker) {
|
if (ch === ']') {
|
classMarker = false;
|
}
|
} else {
|
if (ch === '/') {
|
terminated = true;
|
break;
|
} else if (ch === '[') {
|
classMarker = true;
|
}
|
}
|
}
|
|
if (!terminated) {
|
throwUnexpectedToken(null, Messages.UnterminatedRegExp);
|
}
|
|
// Exclude leading and trailing slash.
|
body = str.substr(1, str.length - 2);
|
return {
|
value: body,
|
literal: str
|
};
|
}
|
|
function scanRegExpFlags() {
|
var ch, str, flags, restore;
|
|
str = '';
|
flags = '';
|
while (index < length) {
|
ch = source[index];
|
if (!isIdentifierPart(ch.charCodeAt(0))) {
|
break;
|
}
|
|
++index;
|
if (ch === '\\' && index < length) {
|
ch = source[index];
|
if (ch === 'u') {
|
++index;
|
restore = index;
|
ch = scanHexEscape('u');
|
if (ch) {
|
flags += ch;
|
for (str += '\\u'; restore < index; ++restore) {
|
str += source[restore];
|
}
|
} else {
|
index = restore;
|
flags += 'u';
|
str += '\\u';
|
}
|
tolerateUnexpectedToken();
|
} else {
|
str += '\\';
|
tolerateUnexpectedToken();
|
}
|
} else {
|
flags += ch;
|
str += ch;
|
}
|
}
|
|
return {
|
value: flags,
|
literal: str
|
};
|
}
|
|
function scanRegExp() {
|
var start, body, flags, value;
|
scanning = true;
|
|
lookahead = null;
|
skipComment();
|
start = index;
|
|
body = scanRegExpBody();
|
flags = scanRegExpFlags();
|
value = testRegExp(body.value, flags.value);
|
scanning = false;
|
if (extra.tokenize) {
|
return {
|
type: Token.RegularExpression,
|
value: value,
|
regex: {
|
pattern: body.value,
|
flags: flags.value
|
},
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: start,
|
end: index
|
};
|
}
|
|
return {
|
literal: body.literal + flags.literal,
|
value: value,
|
regex: {
|
pattern: body.value,
|
flags: flags.value
|
},
|
start: start,
|
end: index
|
};
|
}
|
|
function collectRegex() {
|
var pos, loc, regex, token;
|
|
skipComment();
|
|
pos = index;
|
loc = {
|
start: {
|
line: lineNumber,
|
column: index - lineStart
|
}
|
};
|
|
regex = scanRegExp();
|
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart
|
};
|
|
/* istanbul ignore next */
|
if (!extra.tokenize) {
|
// Pop the previous token, which is likely '/' or '/='
|
if (extra.tokens.length > 0) {
|
token = extra.tokens[extra.tokens.length - 1];
|
if (token.range[0] === pos && token.type === 'Punctuator') {
|
if (token.value === '/' || token.value === '/=') {
|
extra.tokens.pop();
|
}
|
}
|
}
|
|
extra.tokens.push({
|
type: 'RegularExpression',
|
value: regex.literal,
|
regex: regex.regex,
|
range: [pos, index],
|
loc: loc
|
});
|
}
|
|
return regex;
|
}
|
|
function isIdentifierName(token) {
|
return token.type === Token.Identifier ||
|
token.type === Token.Keyword ||
|
token.type === Token.BooleanLiteral ||
|
token.type === Token.NullLiteral;
|
}
|
|
// Using the following algorithm:
|
// https://github.com/mozilla/sweet.js/wiki/design
|
|
function advanceSlash() {
|
var regex, previous, check;
|
|
function testKeyword(value) {
|
return value && (value.length > 1) && (value[0] >= 'a') && (value[0] <= 'z');
|
}
|
|
previous = extra.tokenValues[extra.tokens.length - 1];
|
regex = (previous !== null);
|
|
switch (previous) {
|
case 'this':
|
case ']':
|
regex = false;
|
break;
|
|
case ')':
|
check = extra.tokenValues[extra.openParenToken - 1];
|
regex = (check === 'if' || check === 'while' || check === 'for' || check === 'with');
|
break;
|
|
case '}':
|
// Dividing a function by anything makes little sense,
|
// but we have to check for that.
|
regex = false;
|
if (testKeyword(extra.tokenValues[extra.openCurlyToken - 3])) {
|
// Anonymous function, e.g. function(){} /42
|
check = extra.tokenValues[extra.openCurlyToken - 4];
|
regex = check ? (FnExprTokens.indexOf(check) < 0) : false;
|
} else if (testKeyword(extra.tokenValues[extra.openCurlyToken - 4])) {
|
// Named function, e.g. function f(){} /42/
|
check = extra.tokenValues[extra.openCurlyToken - 5];
|
regex = check ? (FnExprTokens.indexOf(check) < 0) : true;
|
}
|
}
|
|
return regex ? collectRegex() : scanPunctuator();
|
}
|
|
function advance() {
|
var cp, token;
|
|
if (index >= length) {
|
return {
|
type: Token.EOF,
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
start: index,
|
end: index
|
};
|
}
|
|
cp = source.charCodeAt(index);
|
|
if (isIdentifierStart(cp)) {
|
token = scanIdentifier();
|
if (strict && isStrictModeReservedWord(token.value)) {
|
token.type = Token.Keyword;
|
}
|
return token;
|
}
|
|
// Very common: ( and ) and ;
|
if (cp === 0x28 || cp === 0x29 || cp === 0x3B) {
|
return scanPunctuator();
|
}
|
|
// String literal starts with single quote (U+0027) or double quote (U+0022).
|
if (cp === 0x27 || cp === 0x22) {
|
return scanStringLiteral();
|
}
|
|
// Dot (.) U+002E can also start a floating-point number, hence the need
|
// to check the next character.
|
if (cp === 0x2E) {
|
if (isDecimalDigit(source.charCodeAt(index + 1))) {
|
return scanNumericLiteral();
|
}
|
return scanPunctuator();
|
}
|
|
if (isDecimalDigit(cp)) {
|
return scanNumericLiteral();
|
}
|
|
// Slash (/) U+002F can also start a regex.
|
if (extra.tokenize && cp === 0x2F) {
|
return advanceSlash();
|
}
|
|
// Template literals start with ` (U+0060) for template head
|
// or } (U+007D) for template middle or template tail.
|
if (cp === 0x60 || (cp === 0x7D && state.curlyStack[state.curlyStack.length - 1] === '${')) {
|
return scanTemplate();
|
}
|
|
// Possible identifier start in a surrogate pair.
|
if (cp >= 0xD800 && cp < 0xDFFF) {
|
cp = codePointAt(index);
|
if (isIdentifierStart(cp)) {
|
return scanIdentifier();
|
}
|
}
|
|
return scanPunctuator();
|
}
|
|
function collectToken() {
|
var loc, token, value, entry;
|
|
loc = {
|
start: {
|
line: lineNumber,
|
column: index - lineStart
|
}
|
};
|
|
token = advance();
|
loc.end = {
|
line: lineNumber,
|
column: index - lineStart
|
};
|
|
if (token.type !== Token.EOF) {
|
value = source.slice(token.start, token.end);
|
entry = {
|
type: TokenName[token.type],
|
value: value,
|
range: [token.start, token.end],
|
loc: loc
|
};
|
if (token.regex) {
|
entry.regex = {
|
pattern: token.regex.pattern,
|
flags: token.regex.flags
|
};
|
}
|
if (extra.tokenValues) {
|
extra.tokenValues.push((entry.type === 'Punctuator' || entry.type === 'Keyword') ? entry.value : null);
|
}
|
if (extra.tokenize) {
|
if (!extra.range) {
|
delete entry.range;
|
}
|
if (!extra.loc) {
|
delete entry.loc;
|
}
|
if (extra.delegate) {
|
entry = extra.delegate(entry);
|
}
|
}
|
extra.tokens.push(entry);
|
}
|
|
return token;
|
}
|
|
function lex() {
|
var token;
|
scanning = true;
|
|
lastIndex = index;
|
lastLineNumber = lineNumber;
|
lastLineStart = lineStart;
|
|
skipComment();
|
|
token = lookahead;
|
|
startIndex = index;
|
startLineNumber = lineNumber;
|
startLineStart = lineStart;
|
|
lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
|
scanning = false;
|
return token;
|
}
|
|
function peek() {
|
scanning = true;
|
|
skipComment();
|
|
lastIndex = index;
|
lastLineNumber = lineNumber;
|
lastLineStart = lineStart;
|
|
startIndex = index;
|
startLineNumber = lineNumber;
|
startLineStart = lineStart;
|
|
lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
|
scanning = false;
|
}
|
|
function Position() {
|
this.line = startLineNumber;
|
this.column = startIndex - startLineStart;
|
}
|
|
function SourceLocation() {
|
this.start = new Position();
|
this.end = null;
|
}
|
|
function WrappingSourceLocation(startToken) {
|
this.start = {
|
line: startToken.lineNumber,
|
column: startToken.start - startToken.lineStart
|
};
|
this.end = null;
|
}
|
|
function Node() {
|
if (extra.range) {
|
this.range = [startIndex, 0];
|
}
|
if (extra.loc) {
|
this.loc = new SourceLocation();
|
}
|
}
|
|
function WrappingNode(startToken) {
|
if (extra.range) {
|
this.range = [startToken.start, 0];
|
}
|
if (extra.loc) {
|
this.loc = new WrappingSourceLocation(startToken);
|
}
|
}
|
|
WrappingNode.prototype = Node.prototype = {
|
|
processComment: function () {
|
var lastChild,
|
innerComments,
|
leadingComments,
|
trailingComments,
|
bottomRight = extra.bottomRightStack,
|
i,
|
comment,
|
last = bottomRight[bottomRight.length - 1];
|
|
if (this.type === Syntax.Program) {
|
if (this.body.length > 0) {
|
return;
|
}
|
}
|
/**
|
* patch innnerComments for properties empty block
|
* `function a() {/** comments **\/}`
|
*/
|
|
if (this.type === Syntax.BlockStatement && this.body.length === 0) {
|
innerComments = [];
|
for (i = extra.leadingComments.length - 1; i >= 0; --i) {
|
comment = extra.leadingComments[i];
|
if (this.range[1] >= comment.range[1]) {
|
innerComments.unshift(comment);
|
extra.leadingComments.splice(i, 1);
|
extra.trailingComments.splice(i, 1);
|
}
|
}
|
if (innerComments.length) {
|
this.innerComments = innerComments;
|
//bottomRight.push(this);
|
return;
|
}
|
}
|
|
if (extra.trailingComments.length > 0) {
|
trailingComments = [];
|
for (i = extra.trailingComments.length - 1; i >= 0; --i) {
|
comment = extra.trailingComments[i];
|
if (comment.range[0] >= this.range[1]) {
|
trailingComments.unshift(comment);
|
extra.trailingComments.splice(i, 1);
|
}
|
}
|
extra.trailingComments = [];
|
} else {
|
if (last && last.trailingComments && last.trailingComments[0].range[0] >= this.range[1]) {
|
trailingComments = last.trailingComments;
|
delete last.trailingComments;
|
}
|
}
|
|
// Eating the stack.
|
while (last && last.range[0] >= this.range[0]) {
|
lastChild = bottomRight.pop();
|
last = bottomRight[bottomRight.length - 1];
|
}
|
|
if (lastChild) {
|
if (lastChild.leadingComments) {
|
leadingComments = [];
|
for (i = lastChild.leadingComments.length - 1; i >= 0; --i) {
|
comment = lastChild.leadingComments[i];
|
if (comment.range[1] <= this.range[0]) {
|
leadingComments.unshift(comment);
|
lastChild.leadingComments.splice(i, 1);
|
}
|
}
|
|
if (!lastChild.leadingComments.length) {
|
lastChild.leadingComments = undefined;
|
}
|
}
|
} else if (extra.leadingComments.length > 0) {
|
leadingComments = [];
|
for (i = extra.leadingComments.length - 1; i >= 0; --i) {
|
comment = extra.leadingComments[i];
|
if (comment.range[1] <= this.range[0]) {
|
leadingComments.unshift(comment);
|
extra.leadingComments.splice(i, 1);
|
}
|
}
|
}
|
|
|
if (leadingComments && leadingComments.length > 0) {
|
this.leadingComments = leadingComments;
|
}
|
if (trailingComments && trailingComments.length > 0) {
|
this.trailingComments = trailingComments;
|
}
|
|
bottomRight.push(this);
|
},
|
|
finish: function () {
|
if (extra.range) {
|
this.range[1] = lastIndex;
|
}
|
if (extra.loc) {
|
this.loc.end = {
|
line: lastLineNumber,
|
column: lastIndex - lastLineStart
|
};
|
if (extra.source) {
|
this.loc.source = extra.source;
|
}
|
}
|
|
if (extra.attachComment) {
|
this.processComment();
|
}
|
},
|
|
finishArrayExpression: function (elements) {
|
this.type = Syntax.ArrayExpression;
|
this.elements = elements;
|
this.finish();
|
return this;
|
},
|
|
finishArrayPattern: function (elements) {
|
this.type = Syntax.ArrayPattern;
|
this.elements = elements;
|
this.finish();
|
return this;
|
},
|
|
finishArrowFunctionExpression: function (params, defaults, body, expression) {
|
this.type = Syntax.ArrowFunctionExpression;
|
this.id = null;
|
this.params = params;
|
this.defaults = defaults;
|
this.body = body;
|
this.generator = false;
|
this.expression = expression;
|
this.finish();
|
return this;
|
},
|
|
finishAssignmentExpression: function (operator, left, right) {
|
this.type = Syntax.AssignmentExpression;
|
this.operator = operator;
|
this.left = left;
|
this.right = right;
|
this.finish();
|
return this;
|
},
|
|
finishAssignmentPattern: function (left, right) {
|
this.type = Syntax.AssignmentPattern;
|
this.left = left;
|
this.right = right;
|
this.finish();
|
return this;
|
},
|
|
finishBinaryExpression: function (operator, left, right) {
|
this.type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression : Syntax.BinaryExpression;
|
this.operator = operator;
|
this.left = left;
|
this.right = right;
|
this.finish();
|
return this;
|
},
|
|
finishBlockStatement: function (body) {
|
this.type = Syntax.BlockStatement;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishBreakStatement: function (label) {
|
this.type = Syntax.BreakStatement;
|
this.label = label;
|
this.finish();
|
return this;
|
},
|
|
finishCallExpression: function (callee, args) {
|
this.type = Syntax.CallExpression;
|
this.callee = callee;
|
this.arguments = args;
|
this.finish();
|
return this;
|
},
|
|
finishCatchClause: function (param, body) {
|
this.type = Syntax.CatchClause;
|
this.param = param;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishClassBody: function (body) {
|
this.type = Syntax.ClassBody;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishClassDeclaration: function (id, superClass, body) {
|
this.type = Syntax.ClassDeclaration;
|
this.id = id;
|
this.superClass = superClass;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishClassExpression: function (id, superClass, body) {
|
this.type = Syntax.ClassExpression;
|
this.id = id;
|
this.superClass = superClass;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishConditionalExpression: function (test, consequent, alternate) {
|
this.type = Syntax.ConditionalExpression;
|
this.test = test;
|
this.consequent = consequent;
|
this.alternate = alternate;
|
this.finish();
|
return this;
|
},
|
|
finishContinueStatement: function (label) {
|
this.type = Syntax.ContinueStatement;
|
this.label = label;
|
this.finish();
|
return this;
|
},
|
|
finishDebuggerStatement: function () {
|
this.type = Syntax.DebuggerStatement;
|
this.finish();
|
return this;
|
},
|
|
finishDoWhileStatement: function (body, test) {
|
this.type = Syntax.DoWhileStatement;
|
this.body = body;
|
this.test = test;
|
this.finish();
|
return this;
|
},
|
|
finishEmptyStatement: function () {
|
this.type = Syntax.EmptyStatement;
|
this.finish();
|
return this;
|
},
|
|
finishExpressionStatement: function (expression) {
|
this.type = Syntax.ExpressionStatement;
|
this.expression = expression;
|
this.finish();
|
return this;
|
},
|
|
finishForStatement: function (init, test, update, body) {
|
this.type = Syntax.ForStatement;
|
this.init = init;
|
this.test = test;
|
this.update = update;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishForOfStatement: function (left, right, body) {
|
this.type = Syntax.ForOfStatement;
|
this.left = left;
|
this.right = right;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishForInStatement: function (left, right, body) {
|
this.type = Syntax.ForInStatement;
|
this.left = left;
|
this.right = right;
|
this.body = body;
|
this.each = false;
|
this.finish();
|
return this;
|
},
|
|
finishFunctionDeclaration: function (id, params, defaults, body, generator) {
|
this.type = Syntax.FunctionDeclaration;
|
this.id = id;
|
this.params = params;
|
this.defaults = defaults;
|
this.body = body;
|
this.generator = generator;
|
this.expression = false;
|
this.finish();
|
return this;
|
},
|
|
finishFunctionExpression: function (id, params, defaults, body, generator) {
|
this.type = Syntax.FunctionExpression;
|
this.id = id;
|
this.params = params;
|
this.defaults = defaults;
|
this.body = body;
|
this.generator = generator;
|
this.expression = false;
|
this.finish();
|
return this;
|
},
|
|
finishIdentifier: function (name) {
|
this.type = Syntax.Identifier;
|
this.name = name;
|
this.finish();
|
return this;
|
},
|
|
finishIfStatement: function (test, consequent, alternate) {
|
this.type = Syntax.IfStatement;
|
this.test = test;
|
this.consequent = consequent;
|
this.alternate = alternate;
|
this.finish();
|
return this;
|
},
|
|
finishLabeledStatement: function (label, body) {
|
this.type = Syntax.LabeledStatement;
|
this.label = label;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishLiteral: function (token) {
|
this.type = Syntax.Literal;
|
this.value = token.value;
|
this.raw = source.slice(token.start, token.end);
|
if (token.regex) {
|
this.regex = token.regex;
|
}
|
this.finish();
|
return this;
|
},
|
|
finishMemberExpression: function (accessor, object, property) {
|
this.type = Syntax.MemberExpression;
|
this.computed = accessor === '[';
|
this.object = object;
|
this.property = property;
|
this.finish();
|
return this;
|
},
|
|
finishMetaProperty: function (meta, property) {
|
this.type = Syntax.MetaProperty;
|
this.meta = meta;
|
this.property = property;
|
this.finish();
|
return this;
|
},
|
|
finishNewExpression: function (callee, args) {
|
this.type = Syntax.NewExpression;
|
this.callee = callee;
|
this.arguments = args;
|
this.finish();
|
return this;
|
},
|
|
finishObjectExpression: function (properties) {
|
this.type = Syntax.ObjectExpression;
|
this.properties = properties;
|
this.finish();
|
return this;
|
},
|
|
finishObjectPattern: function (properties) {
|
this.type = Syntax.ObjectPattern;
|
this.properties = properties;
|
this.finish();
|
return this;
|
},
|
|
finishPostfixExpression: function (operator, argument) {
|
this.type = Syntax.UpdateExpression;
|
this.operator = operator;
|
this.argument = argument;
|
this.prefix = false;
|
this.finish();
|
return this;
|
},
|
|
finishProgram: function (body, sourceType) {
|
this.type = Syntax.Program;
|
this.body = body;
|
this.sourceType = sourceType;
|
this.finish();
|
return this;
|
},
|
|
finishProperty: function (kind, key, computed, value, method, shorthand) {
|
this.type = Syntax.Property;
|
this.key = key;
|
this.computed = computed;
|
this.value = value;
|
this.kind = kind;
|
this.method = method;
|
this.shorthand = shorthand;
|
this.finish();
|
return this;
|
},
|
|
finishRestElement: function (argument) {
|
this.type = Syntax.RestElement;
|
this.argument = argument;
|
this.finish();
|
return this;
|
},
|
|
finishReturnStatement: function (argument) {
|
this.type = Syntax.ReturnStatement;
|
this.argument = argument;
|
this.finish();
|
return this;
|
},
|
|
finishSequenceExpression: function (expressions) {
|
this.type = Syntax.SequenceExpression;
|
this.expressions = expressions;
|
this.finish();
|
return this;
|
},
|
|
finishSpreadElement: function (argument) {
|
this.type = Syntax.SpreadElement;
|
this.argument = argument;
|
this.finish();
|
return this;
|
},
|
|
finishSwitchCase: function (test, consequent) {
|
this.type = Syntax.SwitchCase;
|
this.test = test;
|
this.consequent = consequent;
|
this.finish();
|
return this;
|
},
|
|
finishSuper: function () {
|
this.type = Syntax.Super;
|
this.finish();
|
return this;
|
},
|
|
finishSwitchStatement: function (discriminant, cases) {
|
this.type = Syntax.SwitchStatement;
|
this.discriminant = discriminant;
|
this.cases = cases;
|
this.finish();
|
return this;
|
},
|
|
finishTaggedTemplateExpression: function (tag, quasi) {
|
this.type = Syntax.TaggedTemplateExpression;
|
this.tag = tag;
|
this.quasi = quasi;
|
this.finish();
|
return this;
|
},
|
|
finishTemplateElement: function (value, tail) {
|
this.type = Syntax.TemplateElement;
|
this.value = value;
|
this.tail = tail;
|
this.finish();
|
return this;
|
},
|
|
finishTemplateLiteral: function (quasis, expressions) {
|
this.type = Syntax.TemplateLiteral;
|
this.quasis = quasis;
|
this.expressions = expressions;
|
this.finish();
|
return this;
|
},
|
|
finishThisExpression: function () {
|
this.type = Syntax.ThisExpression;
|
this.finish();
|
return this;
|
},
|
|
finishThrowStatement: function (argument) {
|
this.type = Syntax.ThrowStatement;
|
this.argument = argument;
|
this.finish();
|
return this;
|
},
|
|
finishTryStatement: function (block, handler, finalizer) {
|
this.type = Syntax.TryStatement;
|
this.block = block;
|
this.guardedHandlers = [];
|
this.handlers = handler ? [handler] : [];
|
this.handler = handler;
|
this.finalizer = finalizer;
|
this.finish();
|
return this;
|
},
|
|
finishUnaryExpression: function (operator, argument) {
|
this.type = (operator === '++' || operator === '--') ? Syntax.UpdateExpression : Syntax.UnaryExpression;
|
this.operator = operator;
|
this.argument = argument;
|
this.prefix = true;
|
this.finish();
|
return this;
|
},
|
|
finishVariableDeclaration: function (declarations) {
|
this.type = Syntax.VariableDeclaration;
|
this.declarations = declarations;
|
this.kind = 'var';
|
this.finish();
|
return this;
|
},
|
|
finishLexicalDeclaration: function (declarations, kind) {
|
this.type = Syntax.VariableDeclaration;
|
this.declarations = declarations;
|
this.kind = kind;
|
this.finish();
|
return this;
|
},
|
|
finishVariableDeclarator: function (id, init) {
|
this.type = Syntax.VariableDeclarator;
|
this.id = id;
|
this.init = init;
|
this.finish();
|
return this;
|
},
|
|
finishWhileStatement: function (test, body) {
|
this.type = Syntax.WhileStatement;
|
this.test = test;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishWithStatement: function (object, body) {
|
this.type = Syntax.WithStatement;
|
this.object = object;
|
this.body = body;
|
this.finish();
|
return this;
|
},
|
|
finishExportSpecifier: function (local, exported) {
|
this.type = Syntax.ExportSpecifier;
|
this.exported = exported || local;
|
this.local = local;
|
this.finish();
|
return this;
|
},
|
|
finishImportDefaultSpecifier: function (local) {
|
this.type = Syntax.ImportDefaultSpecifier;
|
this.local = local;
|
this.finish();
|
return this;
|
},
|
|
finishImportNamespaceSpecifier: function (local) {
|
this.type = Syntax.ImportNamespaceSpecifier;
|
this.local = local;
|
this.finish();
|
return this;
|
},
|
|
finishExportNamedDeclaration: function (declaration, specifiers, src) {
|
this.type = Syntax.ExportNamedDeclaration;
|
this.declaration = declaration;
|
this.specifiers = specifiers;
|
this.source = src;
|
this.finish();
|
return this;
|
},
|
|
finishExportDefaultDeclaration: function (declaration) {
|
this.type = Syntax.ExportDefaultDeclaration;
|
this.declaration = declaration;
|
this.finish();
|
return this;
|
},
|
|
finishExportAllDeclaration: function (src) {
|
this.type = Syntax.ExportAllDeclaration;
|
this.source = src;
|
this.finish();
|
return this;
|
},
|
|
finishImportSpecifier: function (local, imported) {
|
this.type = Syntax.ImportSpecifier;
|
this.local = local || imported;
|
this.imported = imported;
|
this.finish();
|
return this;
|
},
|
|
finishImportDeclaration: function (specifiers, src) {
|
this.type = Syntax.ImportDeclaration;
|
this.specifiers = specifiers;
|
this.source = src;
|
this.finish();
|
return this;
|
},
|
|
finishYieldExpression: function (argument, delegate) {
|
this.type = Syntax.YieldExpression;
|
this.argument = argument;
|
this.delegate = delegate;
|
this.finish();
|
return this;
|
}
|
};
|
|
|
function recordError(error) {
|
var e, existing;
|
|
for (e = 0; e < extra.errors.length; e++) {
|
existing = extra.errors[e];
|
// Prevent duplicated error.
|
/* istanbul ignore next */
|
if (existing.index === error.index && existing.message === error.message) {
|
return;
|
}
|
}
|
|
extra.errors.push(error);
|
}
|
|
function constructError(msg, column) {
|
var error = new Error(msg);
|
try {
|
throw error;
|
} catch (base) {
|
/* istanbul ignore else */
|
if (Object.create && Object.defineProperty) {
|
error = Object.create(base);
|
Object.defineProperty(error, 'column', { value: column });
|
}
|
} finally {
|
return error;
|
}
|
}
|
|
function createError(line, pos, description) {
|
var msg, column, error;
|
|
msg = 'Line ' + line + ': ' + description;
|
column = pos - (scanning ? lineStart : lastLineStart) + 1;
|
error = constructError(msg, column);
|
error.lineNumber = line;
|
error.description = description;
|
error.index = pos;
|
return error;
|
}
|
|
// Throw an exception
|
|
function throwError(messageFormat) {
|
var args, msg;
|
|
args = Array.prototype.slice.call(arguments, 1);
|
msg = messageFormat.replace(/%(\d)/g,
|
function (whole, idx) {
|
assert(idx < args.length, 'Message reference must be in range');
|
return args[idx];
|
}
|
);
|
|
throw createError(lastLineNumber, lastIndex, msg);
|
}
|
|
function tolerateError(messageFormat) {
|
var args, msg, error;
|
|
args = Array.prototype.slice.call(arguments, 1);
|
/* istanbul ignore next */
|
msg = messageFormat.replace(/%(\d)/g,
|
function (whole, idx) {
|
assert(idx < args.length, 'Message reference must be in range');
|
return args[idx];
|
}
|
);
|
|
error = createError(lineNumber, lastIndex, msg);
|
if (extra.errors) {
|
recordError(error);
|
} else {
|
throw error;
|
}
|
}
|
|
// Throw an exception because of the token.
|
|
function unexpectedTokenError(token, message) {
|
var value, msg = message || Messages.UnexpectedToken;
|
|
if (token) {
|
if (!message) {
|
msg = (token.type === Token.EOF) ? Messages.UnexpectedEOS :
|
(token.type === Token.Identifier) ? Messages.UnexpectedIdentifier :
|
(token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber :
|
(token.type === Token.StringLiteral) ? Messages.UnexpectedString :
|
(token.type === Token.Template) ? Messages.UnexpectedTemplate :
|
Messages.UnexpectedToken;
|
|
if (token.type === Token.Keyword) {
|
if (isFutureReservedWord(token.value)) {
|
msg = Messages.UnexpectedReserved;
|
} else if (strict && isStrictModeReservedWord(token.value)) {
|
msg = Messages.StrictReservedWord;
|
}
|
}
|
}
|
|
value = (token.type === Token.Template) ? token.value.raw : token.value;
|
} else {
|
value = 'ILLEGAL';
|
}
|
|
msg = msg.replace('%0', value);
|
|
return (token && typeof token.lineNumber === 'number') ?
|
createError(token.lineNumber, token.start, msg) :
|
createError(scanning ? lineNumber : lastLineNumber, scanning ? index : lastIndex, msg);
|
}
|
|
function throwUnexpectedToken(token, message) {
|
throw unexpectedTokenError(token, message);
|
}
|
|
function tolerateUnexpectedToken(token, message) {
|
var error = unexpectedTokenError(token, message);
|
if (extra.errors) {
|
recordError(error);
|
} else {
|
throw error;
|
}
|
}
|
|
// Expect the next token to match the specified punctuator.
|
// If not, an exception will be thrown.
|
|
function expect(value) {
|
var token = lex();
|
if (token.type !== Token.Punctuator || token.value !== value) {
|
throwUnexpectedToken(token);
|
}
|
}
|
|
/**
|
* @name expectCommaSeparator
|
* @description Quietly expect a comma when in tolerant mode, otherwise delegates
|
* to <code>expect(value)</code>
|
* @since 2.0
|
*/
|
function expectCommaSeparator() {
|
var token;
|
|
if (extra.errors) {
|
token = lookahead;
|
if (token.type === Token.Punctuator && token.value === ',') {
|
lex();
|
} else if (token.type === Token.Punctuator && token.value === ';') {
|
lex();
|
tolerateUnexpectedToken(token);
|
} else {
|
tolerateUnexpectedToken(token, Messages.UnexpectedToken);
|
}
|
} else {
|
expect(',');
|
}
|
}
|
|
// Expect the next token to match the specified keyword.
|
// If not, an exception will be thrown.
|
|
function expectKeyword(keyword) {
|
var token = lex();
|
if (token.type !== Token.Keyword || token.value !== keyword) {
|
throwUnexpectedToken(token);
|
}
|
}
|
|
// Return true if the next token matches the specified punctuator.
|
|
function match(value) {
|
return lookahead.type === Token.Punctuator && lookahead.value === value;
|
}
|
|
// Return true if the next token matches the specified keyword
|
|
function matchKeyword(keyword) {
|
return lookahead.type === Token.Keyword && lookahead.value === keyword;
|
}
|
|
// Return true if the next token matches the specified contextual keyword
|
// (where an identifier is sometimes a keyword depending on the context)
|
|
function matchContextualKeyword(keyword) {
|
return lookahead.type === Token.Identifier && lookahead.value === keyword;
|
}
|
|
// Return true if the next token is an assignment operator
|
|
function matchAssign() {
|
var op;
|
|
if (lookahead.type !== Token.Punctuator) {
|
return false;
|
}
|
op = lookahead.value;
|
return op === '=' ||
|
op === '*=' ||
|
op === '/=' ||
|
op === '%=' ||
|
op === '+=' ||
|
op === '-=' ||
|
op === '<<=' ||
|
op === '>>=' ||
|
op === '>>>=' ||
|
op === '&=' ||
|
op === '^=' ||
|
op === '|=';
|
}
|
|
function consumeSemicolon() {
|
// Catch the very common case first: immediately a semicolon (U+003B).
|
if (source.charCodeAt(startIndex) === 0x3B || match(';')) {
|
lex();
|
return;
|
}
|
|
if (hasLineTerminator) {
|
return;
|
}
|
|
// FIXME(ikarienator): this is seemingly an issue in the previous location info convention.
|
lastIndex = startIndex;
|
lastLineNumber = startLineNumber;
|
lastLineStart = startLineStart;
|
|
if (lookahead.type !== Token.EOF && !match('}')) {
|
throwUnexpectedToken(lookahead);
|
}
|
}
|
|
// Cover grammar support.
|
//
|
// When an assignment expression position starts with an left parenthesis, the determination of the type
|
// of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead)
|
// or the first comma. This situation also defers the determination of all the expressions nested in the pair.
|
//
|
// There are three productions that can be parsed in a parentheses pair that needs to be determined
|
// after the outermost pair is closed. They are:
|
//
|
// 1. AssignmentExpression
|
// 2. BindingElements
|
// 3. AssignmentTargets
|
//
|
// In order to avoid exponential backtracking, we use two flags to denote if the production can be
|
// binding element or assignment target.
|
//
|
// The three productions have the relationship:
|
//
|
// BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression
|
//
|
// with a single exception that CoverInitializedName when used directly in an Expression, generates
|
// an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the
|
// first usage of CoverInitializedName and report it when we reached the end of the parentheses pair.
|
//
|
// isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not
|
// effect the current flags. This means the production the parser parses is only used as an expression. Therefore
|
// the CoverInitializedName check is conducted.
|
//
|
// inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates
|
// the flags outside of the parser. This means the production the parser parses is used as a part of a potential
|
// pattern. The CoverInitializedName check is deferred.
|
function isolateCoverGrammar(parser) {
|
var oldIsBindingElement = isBindingElement,
|
oldIsAssignmentTarget = isAssignmentTarget,
|
oldFirstCoverInitializedNameError = firstCoverInitializedNameError,
|
result;
|
isBindingElement = true;
|
isAssignmentTarget = true;
|
firstCoverInitializedNameError = null;
|
result = parser();
|
if (firstCoverInitializedNameError !== null) {
|
throwUnexpectedToken(firstCoverInitializedNameError);
|
}
|
isBindingElement = oldIsBindingElement;
|
isAssignmentTarget = oldIsAssignmentTarget;
|
firstCoverInitializedNameError = oldFirstCoverInitializedNameError;
|
return result;
|
}
|
|
function inheritCoverGrammar(parser) {
|
var oldIsBindingElement = isBindingElement,
|
oldIsAssignmentTarget = isAssignmentTarget,
|
oldFirstCoverInitializedNameError = firstCoverInitializedNameError,
|
result;
|
isBindingElement = true;
|
isAssignmentTarget = true;
|
firstCoverInitializedNameError = null;
|
result = parser();
|
isBindingElement = isBindingElement && oldIsBindingElement;
|
isAssignmentTarget = isAssignmentTarget && oldIsAssignmentTarget;
|
firstCoverInitializedNameError = oldFirstCoverInitializedNameError || firstCoverInitializedNameError;
|
return result;
|
}
|
|
// ECMA-262 13.3.3 Destructuring Binding Patterns
|
|
function parseArrayPattern(params, kind) {
|
var node = new Node(), elements = [], rest, restNode;
|
expect('[');
|
|
while (!match(']')) {
|
if (match(',')) {
|
lex();
|
elements.push(null);
|
} else {
|
if (match('...')) {
|
restNode = new Node();
|
lex();
|
params.push(lookahead);
|
rest = parseVariableIdentifier(kind);
|
elements.push(restNode.finishRestElement(rest));
|
break;
|
} else {
|
elements.push(parsePatternWithDefault(params, kind));
|
}
|
if (!match(']')) {
|
expect(',');
|
}
|
}
|
|
}
|
|
expect(']');
|
|
return node.finishArrayPattern(elements);
|
}
|
|
function parsePropertyPattern(params, kind) {
|
var node = new Node(), key, keyToken, computed = match('['), init;
|
if (lookahead.type === Token.Identifier) {
|
keyToken = lookahead;
|
key = parseVariableIdentifier();
|
if (match('=')) {
|
params.push(keyToken);
|
lex();
|
init = parseAssignmentExpression();
|
|
return node.finishProperty(
|
'init', key, false,
|
new WrappingNode(keyToken).finishAssignmentPattern(key, init), false, true);
|
} else if (!match(':')) {
|
params.push(keyToken);
|
return node.finishProperty('init', key, false, key, false, true);
|
}
|
} else {
|
key = parseObjectPropertyKey();
|
}
|
expect(':');
|
init = parsePatternWithDefault(params, kind);
|
return node.finishProperty('init', key, computed, init, false, false);
|
}
|
|
function parseObjectPattern(params, kind) {
|
var node = new Node(), properties = [];
|
|
expect('{');
|
|
while (!match('}')) {
|
properties.push(parsePropertyPattern(params, kind));
|
if (!match('}')) {
|
expect(',');
|
}
|
}
|
|
lex();
|
|
return node.finishObjectPattern(properties);
|
}
|
|
function parsePattern(params, kind) {
|
if (match('[')) {
|
return parseArrayPattern(params, kind);
|
} else if (match('{')) {
|
return parseObjectPattern(params, kind);
|
} else if (matchKeyword('let')) {
|
if (kind === 'const' || kind === 'let') {
|
tolerateUnexpectedToken(lookahead, Messages.UnexpectedToken);
|
}
|
}
|
|
params.push(lookahead);
|
return parseVariableIdentifier(kind);
|
}
|
|
function parsePatternWithDefault(params, kind) {
|
var startToken = lookahead, pattern, previousAllowYield, right;
|
pattern = parsePattern(params, kind);
|
if (match('=')) {
|
lex();
|
previousAllowYield = state.allowYield;
|
state.allowYield = true;
|
right = isolateCoverGrammar(parseAssignmentExpression);
|
state.allowYield = previousAllowYield;
|
pattern = new WrappingNode(startToken).finishAssignmentPattern(pattern, right);
|
}
|
return pattern;
|
}
|
|
// ECMA-262 12.2.5 Array Initializer
|
|
function parseArrayInitializer() {
|
var elements = [], node = new Node(), restSpread;
|
|
expect('[');
|
|
while (!match(']')) {
|
if (match(',')) {
|
lex();
|
elements.push(null);
|
} else if (match('...')) {
|
restSpread = new Node();
|
lex();
|
restSpread.finishSpreadElement(inheritCoverGrammar(parseAssignmentExpression));
|
|
if (!match(']')) {
|
isAssignmentTarget = isBindingElement = false;
|
expect(',');
|
}
|
elements.push(restSpread);
|
} else {
|
elements.push(inheritCoverGrammar(parseAssignmentExpression));
|
|
if (!match(']')) {
|
expect(',');
|
}
|
}
|
}
|
|
lex();
|
|
return node.finishArrayExpression(elements);
|
}
|
|
// ECMA-262 12.2.6 Object Initializer
|
|
function parsePropertyFunction(node, paramInfo, isGenerator) {
|
var previousStrict, body;
|
|
isAssignmentTarget = isBindingElement = false;
|
|
previousStrict = strict;
|
body = isolateCoverGrammar(parseFunctionSourceElements);
|
|
if (strict && paramInfo.firstRestricted) {
|
tolerateUnexpectedToken(paramInfo.firstRestricted, paramInfo.message);
|
}
|
if (strict && paramInfo.stricted) {
|
tolerateUnexpectedToken(paramInfo.stricted, paramInfo.message);
|
}
|
|
strict = previousStrict;
|
return node.finishFunctionExpression(null, paramInfo.params, paramInfo.defaults, body, isGenerator);
|
}
|
|
function parsePropertyMethodFunction() {
|
var params, method, node = new Node(),
|
previousAllowYield = state.allowYield;
|
|
state.allowYield = false;
|
params = parseParams();
|
state.allowYield = previousAllowYield;
|
|
state.allowYield = false;
|
method = parsePropertyFunction(node, params, false);
|
state.allowYield = previousAllowYield;
|
|
return method;
|
}
|
|
function parseObjectPropertyKey() {
|
var token, node = new Node(), expr;
|
|
token = lex();
|
|
// Note: This function is called only from parseObjectProperty(), where
|
// EOF and Punctuator tokens are already filtered out.
|
|
switch (token.type) {
|
case Token.StringLiteral:
|
case Token.NumericLiteral:
|
if (strict && token.octal) {
|
tolerateUnexpectedToken(token, Messages.StrictOctalLiteral);
|
}
|
return node.finishLiteral(token);
|
case Token.Identifier:
|
case Token.BooleanLiteral:
|
case Token.NullLiteral:
|
case Token.Keyword:
|
return node.finishIdentifier(token.value);
|
case Token.Punctuator:
|
if (token.value === '[') {
|
expr = isolateCoverGrammar(parseAssignmentExpression);
|
expect(']');
|
return expr;
|
}
|
break;
|
}
|
throwUnexpectedToken(token);
|
}
|
|
function lookaheadPropertyName() {
|
switch (lookahead.type) {
|
case Token.Identifier:
|
case Token.StringLiteral:
|
case Token.BooleanLiteral:
|
case Token.NullLiteral:
|
case Token.NumericLiteral:
|
case Token.Keyword:
|
return true;
|
case Token.Punctuator:
|
return lookahead.value === '[';
|
}
|
return false;
|
}
|
|
// This function is to try to parse a MethodDefinition as defined in 14.3. But in the case of object literals,
|
// it might be called at a position where there is in fact a short hand identifier pattern or a data property.
|
// This can only be determined after we consumed up to the left parentheses.
|
//
|
// In order to avoid back tracking, it returns `null` if the position is not a MethodDefinition and the caller
|
// is responsible to visit other options.
|
function tryParseMethodDefinition(token, key, computed, node) {
|
var value, options, methodNode, params,
|
previousAllowYield = state.allowYield;
|
|
if (token.type === Token.Identifier) {
|
// check for `get` and `set`;
|
|
if (token.value === 'get' && lookaheadPropertyName()) {
|
computed = match('[');
|
key = parseObjectPropertyKey();
|
methodNode = new Node();
|
expect('(');
|
expect(')');
|
|
state.allowYield = false;
|
value = parsePropertyFunction(methodNode, {
|
params: [],
|
defaults: [],
|
stricted: null,
|
firstRestricted: null,
|
message: null
|
}, false);
|
state.allowYield = previousAllowYield;
|
|
return node.finishProperty('get', key, computed, value, false, false);
|
} else if (token.value === 'set' && lookaheadPropertyName()) {
|
computed = match('[');
|
key = parseObjectPropertyKey();
|
methodNode = new Node();
|
expect('(');
|
|
options = {
|
params: [],
|
defaultCount: 0,
|
defaults: [],
|
firstRestricted: null,
|
paramSet: {}
|
};
|
if (match(')')) {
|
tolerateUnexpectedToken(lookahead);
|
} else {
|
state.allowYield = false;
|
parseParam(options);
|
state.allowYield = previousAllowYield;
|
if (options.defaultCount === 0) {
|
options.defaults = [];
|
}
|
}
|
expect(')');
|
|
state.allowYield = false;
|
value = parsePropertyFunction(methodNode, options, false);
|
state.allowYield = previousAllowYield;
|
|
return node.finishProperty('set', key, computed, value, false, false);
|
}
|
} else if (token.type === Token.Punctuator && token.value === '*' && lookaheadPropertyName()) {
|
computed = match('[');
|
key = parseObjectPropertyKey();
|
methodNode = new Node();
|
|
state.allowYield = true;
|
params = parseParams();
|
state.allowYield = previousAllowYield;
|
|
state.allowYield = false;
|
value = parsePropertyFunction(methodNode, params, true);
|
state.allowYield = previousAllowYield;
|
|
return node.finishProperty('init', key, computed, value, true, false);
|
}
|
|
if (key && match('(')) {
|
value = parsePropertyMethodFunction();
|
return node.finishProperty('init', key, computed, value, true, false);
|
}
|
|
// Not a MethodDefinition.
|
return null;
|
}
|
|
function parseObjectProperty(hasProto) {
|
var token = lookahead, node = new Node(), computed, key, maybeMethod, proto, value;
|
|
computed = match('[');
|
if (match('*')) {
|
lex();
|
} else {
|
key = parseObjectPropertyKey();
|
}
|
maybeMethod = tryParseMethodDefinition(token, key, computed, node);
|
if (maybeMethod) {
|
return maybeMethod;
|
}
|
|
if (!key) {
|
throwUnexpectedToken(lookahead);
|
}
|
|
// Check for duplicated __proto__
|
if (!computed) {
|
proto = (key.type === Syntax.Identifier && key.name === '__proto__') ||
|
(key.type === Syntax.Literal && key.value === '__proto__');
|
if (hasProto.value && proto) {
|
tolerateError(Messages.DuplicateProtoProperty);
|
}
|
hasProto.value |= proto;
|
}
|
|
if (match(':')) {
|
lex();
|
value = inheritCoverGrammar(parseAssignmentExpression);
|
return node.finishProperty('init', key, computed, value, false, false);
|
}
|
|
if (token.type === Token.Identifier) {
|
if (match('=')) {
|
firstCoverInitializedNameError = lookahead;
|
lex();
|
value = isolateCoverGrammar(parseAssignmentExpression);
|
return node.finishProperty('init', key, computed,
|
new WrappingNode(token).finishAssignmentPattern(key, value), false, true);
|
}
|
return node.finishProperty('init', key, computed, key, false, true);
|
}
|
|
throwUnexpectedToken(lookahead);
|
}
|
|
function parseObjectInitializer() {
|
var properties = [], hasProto = {value: false}, node = new Node();
|
|
expect('{');
|
|
while (!match('}')) {
|
properties.push(parseObjectProperty(hasProto));
|
|
if (!match('}')) {
|
expectCommaSeparator();
|
}
|
}
|
|
expect('}');
|
|
return node.finishObjectExpression(properties);
|
}
|
|
function reinterpretExpressionAsPattern(expr) {
|
var i;
|
switch (expr.type) {
|
case Syntax.Identifier:
|
case Syntax.MemberExpression:
|
case Syntax.RestElement:
|
case Syntax.AssignmentPattern:
|
break;
|
case Syntax.SpreadElement:
|
expr.type = Syntax.RestElement;
|
reinterpretExpressionAsPattern(expr.argument);
|
break;
|
case Syntax.ArrayExpression:
|
expr.type = Syntax.ArrayPattern;
|
for (i = 0; i < expr.elements.length; i++) {
|
if (expr.elements[i] !== null) {
|
reinterpretExpressionAsPattern(expr.elements[i]);
|
}
|
}
|
break;
|
case Syntax.ObjectExpression:
|
expr.type = Syntax.ObjectPattern;
|
for (i = 0; i < expr.properties.length; i++) {
|
reinterpretExpressionAsPattern(expr.properties[i].value);
|
}
|
break;
|
case Syntax.AssignmentExpression:
|
expr.type = Syntax.AssignmentPattern;
|
reinterpretExpressionAsPattern(expr.left);
|
break;
|
default:
|
// Allow other node type for tolerant parsing.
|
break;
|
}
|
}
|
|
// ECMA-262 12.2.9 Template Literals
|
|
function parseTemplateElement(option) {
|
var node, token;
|
|
if (lookahead.type !== Token.Template || (option.head && !lookahead.head)) {
|
throwUnexpectedToken();
|
}
|
|
node = new Node();
|
token = lex();
|
|
return node.finishTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail);
|
}
|
|
function parseTemplateLiteral() {
|
var quasi, quasis, expressions, node = new Node();
|
|
quasi = parseTemplateElement({ head: true });
|
quasis = [quasi];
|
expressions = [];
|
|
while (!quasi.tail) {
|
expressions.push(parseExpression());
|
quasi = parseTemplateElement({ head: false });
|
quasis.push(quasi);
|
}
|
|
return node.finishTemplateLiteral(quasis, expressions);
|
}
|
|
// ECMA-262 12.2.10 The Grouping Operator
|
|
function parseGroupExpression() {
|
var expr, expressions, startToken, i, params = [];
|
|
expect('(');
|
|
if (match(')')) {
|
lex();
|
if (!match('=>')) {
|
expect('=>');
|
}
|
return {
|
type: PlaceHolders.ArrowParameterPlaceHolder,
|
params: [],
|
rawParams: []
|
};
|
}
|
|
startToken = lookahead;
|
if (match('...')) {
|
expr = parseRestElement(params);
|
expect(')');
|
if (!match('=>')) {
|
expect('=>');
|
}
|
return {
|
type: PlaceHolders.ArrowParameterPlaceHolder,
|
params: [expr]
|
};
|
}
|
|
isBindingElement = true;
|
expr = inheritCoverGrammar(parseAssignmentExpression);
|
|
if (match(',')) {
|
isAssignmentTarget = false;
|
expressions = [expr];
|
|
while (startIndex < length) {
|
if (!match(',')) {
|
break;
|
}
|
lex();
|
|
if (match('...')) {
|
if (!isBindingElement) {
|
throwUnexpectedToken(lookahead);
|
}
|
expressions.push(parseRestElement(params));
|
expect(')');
|
if (!match('=>')) {
|
expect('=>');
|
}
|
isBindingElement = false;
|
for (i = 0; i < expressions.length; i++) {
|
reinterpretExpressionAsPattern(expressions[i]);
|
}
|
return {
|
type: PlaceHolders.ArrowParameterPlaceHolder,
|
params: expressions
|
};
|
}
|
|
expressions.push(inheritCoverGrammar(parseAssignmentExpression));
|
}
|
|
expr = new WrappingNode(startToken).finishSequenceExpression(expressions);
|
}
|
|
|
expect(')');
|
|
if (match('=>')) {
|
if (expr.type === Syntax.Identifier && expr.name === 'yield') {
|
return {
|
type: PlaceHolders.ArrowParameterPlaceHolder,
|
params: [expr]
|
};
|
}
|
|
if (!isBindingElement) {
|
throwUnexpectedToken(lookahead);
|
}
|
|
if (expr.type === Syntax.SequenceExpression) {
|
for (i = 0; i < expr.expressions.length; i++) {
|
reinterpretExpressionAsPattern(expr.expressions[i]);
|
}
|
} else {
|
reinterpretExpressionAsPattern(expr);
|
}
|
|
expr = {
|
type: PlaceHolders.ArrowParameterPlaceHolder,
|
params: expr.type === Syntax.SequenceExpression ? expr.expressions : [expr]
|
};
|
}
|
isBindingElement = false;
|
return expr;
|
}
|
|
|
// ECMA-262 12.2 Primary Expressions
|
|
function parsePrimaryExpression() {
|
var type, token, expr, node;
|
|
if (match('(')) {
|
isBindingElement = false;
|
return inheritCoverGrammar(parseGroupExpression);
|
}
|
|
if (match('[')) {
|
return inheritCoverGrammar(parseArrayInitializer);
|
}
|
|
if (match('{')) {
|
return inheritCoverGrammar(parseObjectInitializer);
|
}
|
|
type = lookahead.type;
|
node = new Node();
|
|
if (type === Token.Identifier) {
|
if (state.sourceType === 'module' && lookahead.value === 'await') {
|
tolerateUnexpectedToken(lookahead);
|
}
|
expr = node.finishIdentifier(lex().value);
|
} else if (type === Token.StringLiteral || type === Token.NumericLiteral) {
|
isAssignmentTarget = isBindingElement = false;
|
if (strict && lookahead.octal) {
|
tolerateUnexpectedToken(lookahead, Messages.StrictOctalLiteral);
|
}
|
expr = node.finishLiteral(lex());
|
} else if (type === Token.Keyword) {
|
if (!strict && state.allowYield && matchKeyword('yield')) {
|
return parseNonComputedProperty();
|
}
|
if (!strict && matchKeyword('let')) {
|
return node.finishIdentifier(lex().value);
|
}
|
isAssignmentTarget = isBindingElement = false;
|
if (matchKeyword('function')) {
|
return parseFunctionExpression();
|
}
|
if (matchKeyword('this')) {
|
lex();
|
return node.finishThisExpression();
|
}
|
if (matchKeyword('class')) {
|
return parseClassExpression();
|
}
|
throwUnexpectedToken(lex());
|
} else if (type === Token.BooleanLiteral) {
|
isAssignmentTarget = isBindingElement = false;
|
token = lex();
|
token.value = (token.value === 'true');
|
expr = node.finishLiteral(token);
|
} else if (type === Token.NullLiteral) {
|
isAssignmentTarget = isBindingElement = false;
|
token = lex();
|
token.value = null;
|
expr = node.finishLiteral(token);
|
} else if (match('/') || match('/=')) {
|
isAssignmentTarget = isBindingElement = false;
|
index = startIndex;
|
|
if (typeof extra.tokens !== 'undefined') {
|
token = collectRegex();
|
} else {
|
token = scanRegExp();
|
}
|
lex();
|
expr = node.finishLiteral(token);
|
} else if (type === Token.Template) {
|
expr = parseTemplateLiteral();
|
} else {
|
throwUnexpectedToken(lex());
|
}
|
|
return expr;
|
}
|
|
// ECMA-262 12.3 Left-Hand-Side Expressions
|
|
function parseArguments() {
|
var args = [], expr;
|
|
expect('(');
|
|
if (!match(')')) {
|
while (startIndex < length) {
|
if (match('...')) {
|
expr = new Node();
|
lex();
|
expr.finishSpreadElement(isolateCoverGrammar(parseAssignmentExpression));
|
} else {
|
expr = isolateCoverGrammar(parseAssignmentExpression);
|
}
|
args.push(expr);
|
if (match(')')) {
|
break;
|
}
|
expectCommaSeparator();
|
}
|
}
|
|
expect(')');
|
|
return args;
|
}
|
|
function parseNonComputedProperty() {
|
var token, node = new Node();
|
|
token = lex();
|
|
if (!isIdentifierName(token)) {
|
throwUnexpectedToken(token);
|
}
|
|
return node.finishIdentifier(token.value);
|
}
|
|
function parseNonComputedMember() {
|
expect('.');
|
|
return parseNonComputedProperty();
|
}
|
|
function parseComputedMember() {
|
var expr;
|
|
expect('[');
|
|
expr = isolateCoverGrammar(parseExpression);
|
|
expect(']');
|
|
return expr;
|
}
|
|
// ECMA-262 12.3.3 The new Operator
|
|
function parseNewExpression() {
|
var callee, args, node = new Node();
|
|
expectKeyword('new');
|
|
if (match('.')) {
|
lex();
|
if (lookahead.type === Token.Identifier && lookahead.value === 'target') {
|
if (state.inFunctionBody) {
|
lex();
|
return node.finishMetaProperty('new', 'target');
|
}
|
}
|
throwUnexpectedToken(lookahead);
|
}
|
|
callee = isolateCoverGrammar(parseLeftHandSideExpression);
|
args = match('(') ? parseArguments() : [];
|
|
isAssignmentTarget = isBindingElement = false;
|
|
return node.finishNewExpression(callee, args);
|
}
|
|
// ECMA-262 12.3.4 Function Calls
|
|
function parseLeftHandSideExpressionAllowCall() {
|
var quasi, expr, args, property, startToken, previousAllowIn = state.allowIn;
|
|
startToken = lookahead;
|
state.allowIn = true;
|
|
if (matchKeyword('super') && state.inFunctionBody) {
|
expr = new Node();
|
lex();
|
expr = expr.finishSuper();
|
if (!match('(') && !match('.') && !match('[')) {
|
throwUnexpectedToken(lookahead);
|
}
|
} else {
|
expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression);
|
}
|
|
for (;;) {
|
if (match('.')) {
|
isBindingElement = false;
|
isAssignmentTarget = true;
|
property = parseNonComputedMember();
|
expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property);
|
} else if (match('(')) {
|
isBindingElement = false;
|
isAssignmentTarget = false;
|
args = parseArguments();
|
expr = new WrappingNode(startToken).finishCallExpression(expr, args);
|
} else if (match('[')) {
|
isBindingElement = false;
|
isAssignmentTarget = true;
|
property = parseComputedMember();
|
expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property);
|
} else if (lookahead.type === Token.Template && lookahead.head) {
|
quasi = parseTemplateLiteral();
|
expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi);
|
} else {
|
break;
|
}
|
}
|
state.allowIn = previousAllowIn;
|
|
return expr;
|
}
|
|
// ECMA-262 12.3 Left-Hand-Side Expressions
|
|
function parseLeftHandSideExpression() {
|
var quasi, expr, property, startToken;
|
assert(state.allowIn, 'callee of new expression always allow in keyword.');
|
|
startToken = lookahead;
|
|
if (matchKeyword('super') && state.inFunctionBody) {
|
expr = new Node();
|
lex();
|
expr = expr.finishSuper();
|
if (!match('[') && !match('.')) {
|
throwUnexpectedToken(lookahead);
|
}
|
} else {
|
expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression);
|
}
|
|
for (;;) {
|
if (match('[')) {
|
isBindingElement = false;
|
isAssignmentTarget = true;
|
property = parseComputedMember();
|
expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property);
|
} else if (match('.')) {
|
isBindingElement = false;
|
isAssignmentTarget = true;
|
property = parseNonComputedMember();
|
expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property);
|
} else if (lookahead.type === Token.Template && lookahead.head) {
|
quasi = parseTemplateLiteral();
|
expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi);
|
} else {
|
break;
|
}
|
}
|
return expr;
|
}
|
|
// ECMA-262 12.4 Postfix Expressions
|
|
function parsePostfixExpression() {
|
var expr, token, startToken = lookahead;
|
|
expr = inheritCoverGrammar(parseLeftHandSideExpressionAllowCall);
|
|
if (!hasLineTerminator && lookahead.type === Token.Punctuator) {
|
if (match('++') || match('--')) {
|
// ECMA-262 11.3.1, 11.3.2
|
if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
|
tolerateError(Messages.StrictLHSPostfix);
|
}
|
|
if (!isAssignmentTarget) {
|
tolerateError(Messages.InvalidLHSInAssignment);
|
}
|
|
isAssignmentTarget = isBindingElement = false;
|
|
token = lex();
|
expr = new WrappingNode(startToken).finishPostfixExpression(token.value, expr);
|
}
|
}
|
|
return expr;
|
}
|
|
// ECMA-262 12.5 Unary Operators
|
|
function parseUnaryExpression() {
|
var token, expr, startToken;
|
|
if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
|
expr = parsePostfixExpression();
|
} else if (match('++') || match('--')) {
|
startToken = lookahead;
|
token = lex();
|
expr = inheritCoverGrammar(parseUnaryExpression);
|
// ECMA-262 11.4.4, 11.4.5
|
if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
|
tolerateError(Messages.StrictLHSPrefix);
|
}
|
|
if (!isAssignmentTarget) {
|
tolerateError(Messages.InvalidLHSInAssignment);
|
}
|
expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
|
isAssignmentTarget = isBindingElement = false;
|
} else if (match('+') || match('-') || match('~') || match('!')) {
|
startToken = lookahead;
|
token = lex();
|
expr = inheritCoverGrammar(parseUnaryExpression);
|
expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
|
isAssignmentTarget = isBindingElement = false;
|
} else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
|
startToken = lookahead;
|
token = lex();
|
expr = inheritCoverGrammar(parseUnaryExpression);
|
expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr);
|
if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
|
tolerateError(Messages.StrictDelete);
|
}
|
isAssignmentTarget = isBindingElement = false;
|
} else {
|
expr = parsePostfixExpression();
|
}
|
|
return expr;
|
}
|
|
function binaryPrecedence(token, allowIn) {
|
var prec = 0;
|
|
if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
|
return 0;
|
}
|
|
switch (token.value) {
|
case '||':
|
prec = 1;
|
break;
|
|
case '&&':
|
prec = 2;
|
break;
|
|
case '|':
|
prec = 3;
|
break;
|
|
case '^':
|
prec = 4;
|
break;
|
|
case '&':
|
prec = 5;
|
break;
|
|
case '==':
|
case '!=':
|
case '===':
|
case '!==':
|
prec = 6;
|
break;
|
|
case '<':
|
case '>':
|
case '<=':
|
case '>=':
|
case 'instanceof':
|
prec = 7;
|
break;
|
|
case 'in':
|
prec = allowIn ? 7 : 0;
|
break;
|
|
case '<<':
|
case '>>':
|
case '>>>':
|
prec = 8;
|
break;
|
|
case '+':
|
case '-':
|
prec = 9;
|
break;
|
|
case '*':
|
case '/':
|
case '%':
|
prec = 11;
|
break;
|
|
default:
|
break;
|
}
|
|
return prec;
|
}
|
|
// ECMA-262 12.6 Multiplicative Operators
|
// ECMA-262 12.7 Additive Operators
|
// ECMA-262 12.8 Bitwise Shift Operators
|
// ECMA-262 12.9 Relational Operators
|
// ECMA-262 12.10 Equality Operators
|
// ECMA-262 12.11 Binary Bitwise Operators
|
// ECMA-262 12.12 Binary Logical Operators
|
|
function parseBinaryExpression() {
|
var marker, markers, expr, token, prec, stack, right, operator, left, i;
|
|
marker = lookahead;
|
left = inheritCoverGrammar(parseUnaryExpression);
|
|
token = lookahead;
|
prec = binaryPrecedence(token, state.allowIn);
|
if (prec === 0) {
|
return left;
|
}
|
isAssignmentTarget = isBindingElement = false;
|
token.prec = prec;
|
lex();
|
|
markers = [marker, lookahead];
|
right = isolateCoverGrammar(parseUnaryExpression);
|
|
stack = [left, token, right];
|
|
while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) {
|
|
// Reduce: make a binary expression from the three topmost entries.
|
while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
|
right = stack.pop();
|
operator = stack.pop().value;
|
left = stack.pop();
|
markers.pop();
|
expr = new WrappingNode(markers[markers.length - 1]).finishBinaryExpression(operator, left, right);
|
stack.push(expr);
|
}
|
|
// Shift.
|
token = lex();
|
token.prec = prec;
|
stack.push(token);
|
markers.push(lookahead);
|
expr = isolateCoverGrammar(parseUnaryExpression);
|
stack.push(expr);
|
}
|
|
// Final reduce to clean-up the stack.
|
i = stack.length - 1;
|
expr = stack[i];
|
markers.pop();
|
while (i > 1) {
|
expr = new WrappingNode(markers.pop()).finishBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
|
i -= 2;
|
}
|
|
return expr;
|
}
|
|
|
// ECMA-262 12.13 Conditional Operator
|
|
function parseConditionalExpression() {
|
var expr, previousAllowIn, consequent, alternate, startToken;
|
|
startToken = lookahead;
|
|
expr = inheritCoverGrammar(parseBinaryExpression);
|
if (match('?')) {
|
lex();
|
previousAllowIn = state.allowIn;
|
state.allowIn = true;
|
consequent = isolateCoverGrammar(parseAssignmentExpression);
|
state.allowIn = previousAllowIn;
|
expect(':');
|
alternate = isolateCoverGrammar(parseAssignmentExpression);
|
|
expr = new WrappingNode(startToken).finishConditionalExpression(expr, consequent, alternate);
|
isAssignmentTarget = isBindingElement = false;
|
}
|
|
return expr;
|
}
|
|
// ECMA-262 14.2 Arrow Function Definitions
|
|
function parseConciseBody() {
|
if (match('{')) {
|
return parseFunctionSourceElements();
|
}
|
return isolateCoverGrammar(parseAssignmentExpression);
|
}
|
|
function checkPatternParam(options, param) {
|
var i;
|
switch (param.type) {
|
case Syntax.Identifier:
|
validateParam(options, param, param.name);
|
break;
|
case Syntax.RestElement:
|
checkPatternParam(options, param.argument);
|
break;
|
case Syntax.AssignmentPattern:
|
checkPatternParam(options, param.left);
|
break;
|
case Syntax.ArrayPattern:
|
for (i = 0; i < param.elements.length; i++) {
|
if (param.elements[i] !== null) {
|
checkPatternParam(options, param.elements[i]);
|
}
|
}
|
break;
|
case Syntax.YieldExpression:
|
break;
|
default:
|
assert(param.type === Syntax.ObjectPattern, 'Invalid type');
|
for (i = 0; i < param.properties.length; i++) {
|
checkPatternParam(options, param.properties[i].value);
|
}
|
break;
|
}
|
}
|
function reinterpretAsCoverFormalsList(expr) {
|
var i, len, param, params, defaults, defaultCount, options, token;
|
|
defaults = [];
|
defaultCount = 0;
|
params = [expr];
|
|
switch (expr.type) {
|
case Syntax.Identifier:
|
break;
|
case PlaceHolders.ArrowParameterPlaceHolder:
|
params = expr.params;
|
break;
|
default:
|
return null;
|
}
|
|
options = {
|
paramSet: {}
|
};
|
|
for (i = 0, len = params.length; i < len; i += 1) {
|
param = params[i];
|
switch (param.type) {
|
case Syntax.AssignmentPattern:
|
params[i] = param.left;
|
if (param.right.type === Syntax.YieldExpression) {
|
if (param.right.argument) {
|
throwUnexpectedToken(lookahead);
|
}
|
param.right.type = Syntax.Identifier;
|
param.right.name = 'yield';
|
delete param.right.argument;
|
delete param.right.delegate;
|
}
|
defaults.push(param.right);
|
++defaultCount;
|
checkPatternParam(options, param.left);
|
break;
|
default:
|
checkPatternParam(options, param);
|
params[i] = param;
|
defaults.push(null);
|
break;
|
}
|
}
|
|
if (strict || !state.allowYield) {
|
for (i = 0, len = params.length; i < len; i += 1) {
|
param = params[i];
|
if (param.type === Syntax.YieldExpression) {
|
throwUnexpectedToken(lookahead);
|
}
|
}
|
}
|
|
if (options.message === Messages.StrictParamDupe) {
|
token = strict ? options.stricted : options.firstRestricted;
|
throwUnexpectedToken(token, options.message);
|
}
|
|
if (defaultCount === 0) {
|
defaults = [];
|
}
|
|
return {
|
params: params,
|
defaults: defaults,
|
stricted: options.stricted,
|
firstRestricted: options.firstRestricted,
|
message: options.message
|
};
|
}
|
|
function parseArrowFunctionExpression(options, node) {
|
var previousStrict, previousAllowYield, body;
|
|
if (hasLineTerminator) {
|
tolerateUnexpectedToken(lookahead);
|
}
|
expect('=>');
|
|
previousStrict = strict;
|
previousAllowYield = state.allowYield;
|
state.allowYield = true;
|
|
body = parseConciseBody();
|
|
if (strict && options.firstRestricted) {
|
throwUnexpectedToken(options.firstRestricted, options.message);
|
}
|
if (strict && options.stricted) {
|
tolerateUnexpectedToken(options.stricted, options.message);
|
}
|
|
strict = previousStrict;
|
state.allowYield = previousAllowYield;
|
|
return node.finishArrowFunctionExpression(options.params, options.defaults, body, body.type !== Syntax.BlockStatement);
|
}
|
|
// ECMA-262 14.4 Yield expression
|
|
function parseYieldExpression() {
|
var argument, expr, delegate, previousAllowYield;
|
|
argument = null;
|
expr = new Node();
|
delegate = false;
|
|
expectKeyword('yield');
|
|
if (!hasLineTerminator) {
|
previousAllowYield = state.allowYield;
|
state.allowYield = false;
|
delegate = match('*');
|
if (delegate) {
|
lex();
|
argument = parseAssignmentExpression();
|
} else {
|
if (!match(';') && !match('}') && !match(')') && lookahead.type !== Token.EOF) {
|
argument = parseAssignmentExpression();
|
}
|
}
|
state.allowYield = previousAllowYield;
|
}
|
|
return expr.finishYieldExpression(argument, delegate);
|
}
|
|
// ECMA-262 12.14 Assignment Operators
|
|
function parseAssignmentExpression() {
|
var token, expr, right, list, startToken;
|
|
startToken = lookahead;
|
token = lookahead;
|
|
if (!state.allowYield && matchKeyword('yield')) {
|
return parseYieldExpression();
|
}
|
|
expr = parseConditionalExpression();
|
|
if (expr.type === PlaceHolders.ArrowParameterPlaceHolder || match('=>')) {
|
isAssignmentTarget = isBindingElement = false;
|
list = reinterpretAsCoverFormalsList(expr);
|
|
if (list) {
|
firstCoverInitializedNameError = null;
|
return parseArrowFunctionExpression(list, new WrappingNode(startToken));
|
}
|
|
return expr;
|
}
|
|
if (matchAssign()) {
|
if (!isAssignmentTarget) {
|
tolerateError(Messages.InvalidLHSInAssignment);
|
}
|
|
// ECMA-262 12.1.1
|
if (strict && expr.type === Syntax.Identifier) {
|
if (isRestrictedWord(expr.name)) {
|
tolerateUnexpectedToken(token, Messages.StrictLHSAssignment);
|
}
|
if (isStrictModeReservedWord(expr.name)) {
|
tolerateUnexpectedToken(token, Messages.StrictReservedWord);
|
}
|
}
|
|
if (!match('=')) {
|
isAssignmentTarget = isBindingElement = false;
|
} else {
|
reinterpretExpressionAsPattern(expr);
|
}
|
|
token = lex();
|
right = isolateCoverGrammar(parseAssignmentExpression);
|
expr = new WrappingNode(startToken).finishAssignmentExpression(token.value, expr, right);
|
firstCoverInitializedNameError = null;
|
}
|
|
return expr;
|
}
|
|
// ECMA-262 12.15 Comma Operator
|
|
function parseExpression() {
|
var expr, startToken = lookahead, expressions;
|
|
expr = isolateCoverGrammar(parseAssignmentExpression);
|
|
if (match(',')) {
|
expressions = [expr];
|
|
while (startIndex < length) {
|
if (!match(',')) {
|
break;
|
}
|
lex();
|
expressions.push(isolateCoverGrammar(parseAssignmentExpression));
|
}
|
|
expr = new WrappingNode(startToken).finishSequenceExpression(expressions);
|
}
|
|
return expr;
|
}
|
|
// ECMA-262 13.2 Block
|
|
function parseStatementListItem() {
|
if (lookahead.type === Token.Keyword) {
|
switch (lookahead.value) {
|
case 'export':
|
if (state.sourceType !== 'module') {
|
tolerateUnexpectedToken(lookahead, Messages.IllegalExportDeclaration);
|
}
|
return parseExportDeclaration();
|
case 'import':
|
if (state.sourceType !== 'module') {
|
tolerateUnexpectedToken(lookahead, Messages.IllegalImportDeclaration);
|
}
|
return parseImportDeclaration();
|
case 'const':
|
return parseLexicalDeclaration({inFor: false});
|
case 'function':
|
return parseFunctionDeclaration(new Node());
|
case 'class':
|
return parseClassDeclaration();
|
}
|
}
|
|
if (matchKeyword('let') && isLexicalDeclaration()) {
|
return parseLexicalDeclaration({inFor: false});
|
}
|
|
return parseStatement();
|
}
|
|
function parseStatementList() {
|
var list = [];
|
while (startIndex < length) {
|
if (match('}')) {
|
break;
|
}
|
list.push(parseStatementListItem());
|
}
|
|
return list;
|
}
|
|
function parseBlock() {
|
var block, node = new Node();
|
|
expect('{');
|
|
block = parseStatementList();
|
|
expect('}');
|
|
return node.finishBlockStatement(block);
|
}
|
|
// ECMA-262 13.3.2 Variable Statement
|
|
function parseVariableIdentifier(kind) {
|
var token, node = new Node();
|
|
token = lex();
|
|
if (token.type === Token.Keyword && token.value === 'yield') {
|
if (strict) {
|
tolerateUnexpectedToken(token, Messages.StrictReservedWord);
|
} if (!state.allowYield) {
|
throwUnexpectedToken(token);
|
}
|
} else if (token.type !== Token.Identifier) {
|
if (strict && token.type === Token.Keyword && isStrictModeReservedWord(token.value)) {
|
tolerateUnexpectedToken(token, Messages.StrictReservedWord);
|
} else {
|
if (strict || token.value !== 'let' || kind !== 'var') {
|
throwUnexpectedToken(token);
|
}
|
}
|
} else if (state.sourceType === 'module' && token.type === Token.Identifier && token.value === 'await') {
|
tolerateUnexpectedToken(token);
|
}
|
|
return node.finishIdentifier(token.value);
|
}
|
|
function parseVariableDeclaration(options) {
|
var init = null, id, node = new Node(), params = [];
|
|
id = parsePattern(params, 'var');
|
|
// ECMA-262 12.2.1
|
if (strict && isRestrictedWord(id.name)) {
|
tolerateError(Messages.StrictVarName);
|
}
|
|
if (match('=')) {
|
lex();
|
init = isolateCoverGrammar(parseAssignmentExpression);
|
} else if (id.type !== Syntax.Identifier && !options.inFor) {
|
expect('=');
|
}
|
|
return node.finishVariableDeclarator(id, init);
|
}
|
|
function parseVariableDeclarationList(options) {
|
var opt, list;
|
|
opt = { inFor: options.inFor };
|
list = [parseVariableDeclaration(opt)];
|
|
while (match(',')) {
|
lex();
|
list.push(parseVariableDeclaration(opt));
|
}
|
|
return list;
|
}
|
|
function parseVariableStatement(node) {
|
var declarations;
|
|
expectKeyword('var');
|
|
declarations = parseVariableDeclarationList({ inFor: false });
|
|
consumeSemicolon();
|
|
return node.finishVariableDeclaration(declarations);
|
}
|
|
// ECMA-262 13.3.1 Let and Const Declarations
|
|
function parseLexicalBinding(kind, options) {
|
var init = null, id, node = new Node(), params = [];
|
|
id = parsePattern(params, kind);
|
|
// ECMA-262 12.2.1
|
if (strict && id.type === Syntax.Identifier && isRestrictedWord(id.name)) {
|
tolerateError(Messages.StrictVarName);
|
}
|
|
if (kind === 'const') {
|
if (!matchKeyword('in') && !matchContextualKeyword('of')) {
|
expect('=');
|
init = isolateCoverGrammar(parseAssignmentExpression);
|
}
|
} else if ((!options.inFor && id.type !== Syntax.Identifier) || match('=')) {
|
expect('=');
|
init = isolateCoverGrammar(parseAssignmentExpression);
|
}
|
|
return node.finishVariableDeclarator(id, init);
|
}
|
|
function parseBindingList(kind, options) {
|
var list = [parseLexicalBinding(kind, options)];
|
|
while (match(',')) {
|
lex();
|
list.push(parseLexicalBinding(kind, options));
|
}
|
|
return list;
|
}
|
|
|
function tokenizerState() {
|
return {
|
index: index,
|
lineNumber: lineNumber,
|
lineStart: lineStart,
|
hasLineTerminator: hasLineTerminator,
|
lastIndex: lastIndex,
|
lastLineNumber: lastLineNumber,
|
lastLineStart: lastLineStart,
|
startIndex: startIndex,
|
startLineNumber: startLineNumber,
|
startLineStart: startLineStart,
|
lookahead: lookahead,
|
tokenCount: extra.tokens ? extra.tokens.length : 0
|
};
|
}
|
|
function resetTokenizerState(ts) {
|
index = ts.index;
|
lineNumber = ts.lineNumber;
|
lineStart = ts.lineStart;
|
hasLineTerminator = ts.hasLineTerminator;
|
lastIndex = ts.lastIndex;
|
lastLineNumber = ts.lastLineNumber;
|
lastLineStart = ts.lastLineStart;
|
startIndex = ts.startIndex;
|
startLineNumber = ts.startLineNumber;
|
startLineStart = ts.startLineStart;
|
lookahead = ts.lookahead;
|
if (extra.tokens) {
|
extra.tokens.splice(ts.tokenCount, extra.tokens.length);
|
}
|
}
|
|
function isLexicalDeclaration() {
|
var lexical, ts;
|
|
ts = tokenizerState();
|
|
lex();
|
lexical = (lookahead.type === Token.Identifier) || match('[') || match('{') ||
|
matchKeyword('let') || matchKeyword('yield');
|
|
resetTokenizerState(ts);
|
|
return lexical;
|
}
|
|
function parseLexicalDeclaration(options) {
|
var kind, declarations, node = new Node();
|
|
kind = lex().value;
|
assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const');
|
|
declarations = parseBindingList(kind, options);
|
|
consumeSemicolon();
|
|
return node.finishLexicalDeclaration(declarations, kind);
|
}
|
|
function parseRestElement(params) {
|
var param, node = new Node();
|
|
lex();
|
|
if (match('{')) {
|
throwError(Messages.ObjectPatternAsRestParameter);
|
}
|
|
params.push(lookahead);
|
|
param = parseVariableIdentifier();
|
|
if (match('=')) {
|
throwError(Messages.DefaultRestParameter);
|
}
|
|
if (!match(')')) {
|
throwError(Messages.ParameterAfterRestParameter);
|
}
|
|
return node.finishRestElement(param);
|
}
|
|
// ECMA-262 13.4 Empty Statement
|
|
function parseEmptyStatement(node) {
|
expect(';');
|
return node.finishEmptyStatement();
|
}
|
|
// ECMA-262 12.4 Expression Statement
|
|
function parseExpressionStatement(node) {
|
var expr = parseExpression();
|
consumeSemicolon();
|
return node.finishExpressionStatement(expr);
|
}
|
|
// ECMA-262 13.6 If statement
|
|
function parseIfStatement(node) {
|
var test, consequent, alternate;
|
|
expectKeyword('if');
|
|
expect('(');
|
|
test = parseExpression();
|
|
expect(')');
|
|
consequent = parseStatement();
|
|
if (matchKeyword('else')) {
|
lex();
|
alternate = parseStatement();
|
} else {
|
alternate = null;
|
}
|
|
return node.finishIfStatement(test, consequent, alternate);
|
}
|
|
// ECMA-262 13.7 Iteration Statements
|
|
function parseDoWhileStatement(node) {
|
var body, test, oldInIteration;
|
|
expectKeyword('do');
|
|
oldInIteration = state.inIteration;
|
state.inIteration = true;
|
|
body = parseStatement();
|
|
state.inIteration = oldInIteration;
|
|
expectKeyword('while');
|
|
expect('(');
|
|
test = parseExpression();
|
|
expect(')');
|
|
if (match(';')) {
|
lex();
|
}
|
|
return node.finishDoWhileStatement(body, test);
|
}
|
|
function parseWhileStatement(node) {
|
var test, body, oldInIteration;
|
|
expectKeyword('while');
|
|
expect('(');
|
|
test = parseExpression();
|
|
expect(')');
|
|
oldInIteration = state.inIteration;
|
state.inIteration = true;
|
|
body = parseStatement();
|
|
state.inIteration = oldInIteration;
|
|
return node.finishWhileStatement(test, body);
|
}
|
|
function parseForStatement(node) {
|
var init, forIn, initSeq, initStartToken, test, update, left, right, kind, declarations,
|
body, oldInIteration, previousAllowIn = state.allowIn;
|
|
init = test = update = null;
|
forIn = true;
|
|
expectKeyword('for');
|
|
expect('(');
|
|
if (match(';')) {
|
lex();
|
} else {
|
if (matchKeyword('var')) {
|
init = new Node();
|
lex();
|
|
state.allowIn = false;
|
declarations = parseVariableDeclarationList({ inFor: true });
|
state.allowIn = previousAllowIn;
|
|
if (declarations.length === 1 && matchKeyword('in')) {
|
init = init.finishVariableDeclaration(declarations);
|
lex();
|
left = init;
|
right = parseExpression();
|
init = null;
|
} else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) {
|
init = init.finishVariableDeclaration(declarations);
|
lex();
|
left = init;
|
right = parseAssignmentExpression();
|
init = null;
|
forIn = false;
|
} else {
|
init = init.finishVariableDeclaration(declarations);
|
expect(';');
|
}
|
} else if (matchKeyword('const') || matchKeyword('let')) {
|
init = new Node();
|
kind = lex().value;
|
|
if (!strict && lookahead.value === 'in') {
|
init = init.finishIdentifier(kind);
|
lex();
|
left = init;
|
right = parseExpression();
|
init = null;
|
} else {
|
state.allowIn = false;
|
declarations = parseBindingList(kind, {inFor: true});
|
state.allowIn = previousAllowIn;
|
|
if (declarations.length === 1 && declarations[0].init === null && matchKeyword('in')) {
|
init = init.finishLexicalDeclaration(declarations, kind);
|
lex();
|
left = init;
|
right = parseExpression();
|
init = null;
|
} else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) {
|
init = init.finishLexicalDeclaration(declarations, kind);
|
lex();
|
left = init;
|
right = parseAssignmentExpression();
|
init = null;
|
forIn = false;
|
} else {
|
consumeSemicolon();
|
init = init.finishLexicalDeclaration(declarations, kind);
|
}
|
}
|
} else {
|
initStartToken = lookahead;
|
state.allowIn = false;
|
init = inheritCoverGrammar(parseAssignmentExpression);
|
state.allowIn = previousAllowIn;
|
|
if (matchKeyword('in')) {
|
if (!isAssignmentTarget) {
|
tolerateError(Messages.InvalidLHSInForIn);
|
}
|
|
lex();
|
reinterpretExpressionAsPattern(init);
|
left = init;
|
right = parseExpression();
|
init = null;
|
} else if (matchContextualKeyword('of')) {
|
if (!isAssignmentTarget) {
|
tolerateError(Messages.InvalidLHSInForLoop);
|
}
|
|
lex();
|
reinterpretExpressionAsPattern(init);
|
left = init;
|
right = parseAssignmentExpression();
|
init = null;
|
forIn = false;
|
} else {
|
if (match(',')) {
|
initSeq = [init];
|
while (match(',')) {
|
lex();
|
initSeq.push(isolateCoverGrammar(parseAssignmentExpression));
|
}
|
init = new WrappingNode(initStartToken).finishSequenceExpression(initSeq);
|
}
|
expect(';');
|
}
|
}
|
}
|
|
if (typeof left === 'undefined') {
|
|
if (!match(';')) {
|
test = parseExpression();
|
}
|
expect(';');
|
|
if (!match(')')) {
|
update = parseExpression();
|
}
|
}
|
|
expect(')');
|
|
oldInIteration = state.inIteration;
|
state.inIteration = true;
|
|
body = isolateCoverGrammar(parseStatement);
|
|
state.inIteration = oldInIteration;
|
|
return (typeof left === 'undefined') ?
|
node.finishForStatement(init, test, update, body) :
|
forIn ? node.finishForInStatement(left, right, body) :
|
node.finishForOfStatement(left, right, body);
|
}
|
|
// ECMA-262 13.8 The continue statement
|
|
function parseContinueStatement(node) {
|
var label = null, key;
|
|
expectKeyword('continue');
|
|
// Optimize the most common form: 'continue;'.
|
if (source.charCodeAt(startIndex) === 0x3B) {
|
lex();
|
|
if (!state.inIteration) {
|
throwError(Messages.IllegalContinue);
|
}
|
|
return node.finishContinueStatement(null);
|
}
|
|
if (hasLineTerminator) {
|
if (!state.inIteration) {
|
throwError(Messages.IllegalContinue);
|
}
|
|
return node.finishContinueStatement(null);
|
}
|
|
if (lookahead.type === Token.Identifier) {
|
label = parseVariableIdentifier();
|
|
key = '$' + label.name;
|
if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
throwError(Messages.UnknownLabel, label.name);
|
}
|
}
|
|
consumeSemicolon();
|
|
if (label === null && !state.inIteration) {
|
throwError(Messages.IllegalContinue);
|
}
|
|
return node.finishContinueStatement(label);
|
}
|
|
// ECMA-262 13.9 The break statement
|
|
function parseBreakStatement(node) {
|
var label = null, key;
|
|
expectKeyword('break');
|
|
// Catch the very common case first: immediately a semicolon (U+003B).
|
if (source.charCodeAt(lastIndex) === 0x3B) {
|
lex();
|
|
if (!(state.inIteration || state.inSwitch)) {
|
throwError(Messages.IllegalBreak);
|
}
|
|
return node.finishBreakStatement(null);
|
}
|
|
if (hasLineTerminator) {
|
if (!(state.inIteration || state.inSwitch)) {
|
throwError(Messages.IllegalBreak);
|
}
|
} else if (lookahead.type === Token.Identifier) {
|
label = parseVariableIdentifier();
|
|
key = '$' + label.name;
|
if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
throwError(Messages.UnknownLabel, label.name);
|
}
|
}
|
|
consumeSemicolon();
|
|
if (label === null && !(state.inIteration || state.inSwitch)) {
|
throwError(Messages.IllegalBreak);
|
}
|
|
return node.finishBreakStatement(label);
|
}
|
|
// ECMA-262 13.10 The return statement
|
|
function parseReturnStatement(node) {
|
var argument = null;
|
|
expectKeyword('return');
|
|
if (!state.inFunctionBody) {
|
tolerateError(Messages.IllegalReturn);
|
}
|
|
// 'return' followed by a space and an identifier is very common.
|
if (source.charCodeAt(lastIndex) === 0x20) {
|
if (isIdentifierStart(source.charCodeAt(lastIndex + 1))) {
|
argument = parseExpression();
|
consumeSemicolon();
|
return node.finishReturnStatement(argument);
|
}
|
}
|
|
if (hasLineTerminator) {
|
// HACK
|
return node.finishReturnStatement(null);
|
}
|
|
if (!match(';')) {
|
if (!match('}') && lookahead.type !== Token.EOF) {
|
argument = parseExpression();
|
}
|
}
|
|
consumeSemicolon();
|
|
return node.finishReturnStatement(argument);
|
}
|
|
// ECMA-262 13.11 The with statement
|
|
function parseWithStatement(node) {
|
var object, body;
|
|
if (strict) {
|
tolerateError(Messages.StrictModeWith);
|
}
|
|
expectKeyword('with');
|
|
expect('(');
|
|
object = parseExpression();
|
|
expect(')');
|
|
body = parseStatement();
|
|
return node.finishWithStatement(object, body);
|
}
|
|
// ECMA-262 13.12 The switch statement
|
|
function parseSwitchCase() {
|
var test, consequent = [], statement, node = new Node();
|
|
if (matchKeyword('default')) {
|
lex();
|
test = null;
|
} else {
|
expectKeyword('case');
|
test = parseExpression();
|
}
|
expect(':');
|
|
while (startIndex < length) {
|
if (match('}') || matchKeyword('default') || matchKeyword('case')) {
|
break;
|
}
|
statement = parseStatementListItem();
|
consequent.push(statement);
|
}
|
|
return node.finishSwitchCase(test, consequent);
|
}
|
|
function parseSwitchStatement(node) {
|
var discriminant, cases, clause, oldInSwitch, defaultFound;
|
|
expectKeyword('switch');
|
|
expect('(');
|
|
discriminant = parseExpression();
|
|
expect(')');
|
|
expect('{');
|
|
cases = [];
|
|
if (match('}')) {
|
lex();
|
return node.finishSwitchStatement(discriminant, cases);
|
}
|
|
oldInSwitch = state.inSwitch;
|
state.inSwitch = true;
|
defaultFound = false;
|
|
while (startIndex < length) {
|
if (match('}')) {
|
break;
|
}
|
clause = parseSwitchCase();
|
if (clause.test === null) {
|
if (defaultFound) {
|
throwError(Messages.MultipleDefaultsInSwitch);
|
}
|
defaultFound = true;
|
}
|
cases.push(clause);
|
}
|
|
state.inSwitch = oldInSwitch;
|
|
expect('}');
|
|
return node.finishSwitchStatement(discriminant, cases);
|
}
|
|
// ECMA-262 13.14 The throw statement
|
|
function parseThrowStatement(node) {
|
var argument;
|
|
expectKeyword('throw');
|
|
if (hasLineTerminator) {
|
throwError(Messages.NewlineAfterThrow);
|
}
|
|
argument = parseExpression();
|
|
consumeSemicolon();
|
|
return node.finishThrowStatement(argument);
|
}
|
|
// ECMA-262 13.15 The try statement
|
|
function parseCatchClause() {
|
var param, params = [], paramMap = {}, key, i, body, node = new Node();
|
|
expectKeyword('catch');
|
|
expect('(');
|
if (match(')')) {
|
throwUnexpectedToken(lookahead);
|
}
|
|
param = parsePattern(params);
|
for (i = 0; i < params.length; i++) {
|
key = '$' + params[i].value;
|
if (Object.prototype.hasOwnProperty.call(paramMap, key)) {
|
tolerateError(Messages.DuplicateBinding, params[i].value);
|
}
|
paramMap[key] = true;
|
}
|
|
// ECMA-262 12.14.1
|
if (strict && isRestrictedWord(param.name)) {
|
tolerateError(Messages.StrictCatchVariable);
|
}
|
|
expect(')');
|
body = parseBlock();
|
return node.finishCatchClause(param, body);
|
}
|
|
function parseTryStatement(node) {
|
var block, handler = null, finalizer = null;
|
|
expectKeyword('try');
|
|
block = parseBlock();
|
|
if (matchKeyword('catch')) {
|
handler = parseCatchClause();
|
}
|
|
if (matchKeyword('finally')) {
|
lex();
|
finalizer = parseBlock();
|
}
|
|
if (!handler && !finalizer) {
|
throwError(Messages.NoCatchOrFinally);
|
}
|
|
return node.finishTryStatement(block, handler, finalizer);
|
}
|
|
// ECMA-262 13.16 The debugger statement
|
|
function parseDebuggerStatement(node) {
|
expectKeyword('debugger');
|
|
consumeSemicolon();
|
|
return node.finishDebuggerStatement();
|
}
|
|
// 13 Statements
|
|
function parseStatement() {
|
var type = lookahead.type,
|
expr,
|
labeledBody,
|
key,
|
node;
|
|
if (type === Token.EOF) {
|
throwUnexpectedToken(lookahead);
|
}
|
|
if (type === Token.Punctuator && lookahead.value === '{') {
|
return parseBlock();
|
}
|
isAssignmentTarget = isBindingElement = true;
|
node = new Node();
|
|
if (type === Token.Punctuator) {
|
switch (lookahead.value) {
|
case ';':
|
return parseEmptyStatement(node);
|
case '(':
|
return parseExpressionStatement(node);
|
default:
|
break;
|
}
|
} else if (type === Token.Keyword) {
|
switch (lookahead.value) {
|
case 'break':
|
return parseBreakStatement(node);
|
case 'continue':
|
return parseContinueStatement(node);
|
case 'debugger':
|
return parseDebuggerStatement(node);
|
case 'do':
|
return parseDoWhileStatement(node);
|
case 'for':
|
return parseForStatement(node);
|
case 'function':
|
return parseFunctionDeclaration(node);
|
case 'if':
|
return parseIfStatement(node);
|
case 'return':
|
return parseReturnStatement(node);
|
case 'switch':
|
return parseSwitchStatement(node);
|
case 'throw':
|
return parseThrowStatement(node);
|
case 'try':
|
return parseTryStatement(node);
|
case 'var':
|
return parseVariableStatement(node);
|
case 'while':
|
return parseWhileStatement(node);
|
case 'with':
|
return parseWithStatement(node);
|
default:
|
break;
|
}
|
}
|
|
expr = parseExpression();
|
|
// ECMA-262 12.12 Labelled Statements
|
if ((expr.type === Syntax.Identifier) && match(':')) {
|
lex();
|
|
key = '$' + expr.name;
|
if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
|
throwError(Messages.Redeclaration, 'Label', expr.name);
|
}
|
|
state.labelSet[key] = true;
|
labeledBody = parseStatement();
|
delete state.labelSet[key];
|
return node.finishLabeledStatement(expr, labeledBody);
|
}
|
|
consumeSemicolon();
|
|
return node.finishExpressionStatement(expr);
|
}
|
|
// ECMA-262 14.1 Function Definition
|
|
function parseFunctionSourceElements() {
|
var statement, body = [], token, directive, firstRestricted,
|
oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody,
|
node = new Node();
|
|
expect('{');
|
|
while (startIndex < length) {
|
if (lookahead.type !== Token.StringLiteral) {
|
break;
|
}
|
token = lookahead;
|
|
statement = parseStatementListItem();
|
body.push(statement);
|
if (statement.expression.type !== Syntax.Literal) {
|
// this is not directive
|
break;
|
}
|
directive = source.slice(token.start + 1, token.end - 1);
|
if (directive === 'use strict') {
|
strict = true;
|
if (firstRestricted) {
|
tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral);
|
}
|
} else {
|
if (!firstRestricted && token.octal) {
|
firstRestricted = token;
|
}
|
}
|
}
|
|
oldLabelSet = state.labelSet;
|
oldInIteration = state.inIteration;
|
oldInSwitch = state.inSwitch;
|
oldInFunctionBody = state.inFunctionBody;
|
|
state.labelSet = {};
|
state.inIteration = false;
|
state.inSwitch = false;
|
state.inFunctionBody = true;
|
|
while (startIndex < length) {
|
if (match('}')) {
|
break;
|
}
|
body.push(parseStatementListItem());
|
}
|
|
expect('}');
|
|
state.labelSet = oldLabelSet;
|
state.inIteration = oldInIteration;
|
state.inSwitch = oldInSwitch;
|
state.inFunctionBody = oldInFunctionBody;
|
|
return node.finishBlockStatement(body);
|
}
|
|
function validateParam(options, param, name) {
|
var key = '$' + name;
|
if (strict) {
|
if (isRestrictedWord(name)) {
|
options.stricted = param;
|
options.message = Messages.StrictParamName;
|
}
|
if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
|
options.stricted = param;
|
options.message = Messages.StrictParamDupe;
|
}
|
} else if (!options.firstRestricted) {
|
if (isRestrictedWord(name)) {
|
options.firstRestricted = param;
|
options.message = Messages.StrictParamName;
|
} else if (isStrictModeReservedWord(name)) {
|
options.firstRestricted = param;
|
options.message = Messages.StrictReservedWord;
|
} else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
|
options.stricted = param;
|
options.message = Messages.StrictParamDupe;
|
}
|
}
|
options.paramSet[key] = true;
|
}
|
|
function parseParam(options) {
|
var token, param, params = [], i, def;
|
|
token = lookahead;
|
if (token.value === '...') {
|
param = parseRestElement(params);
|
validateParam(options, param.argument, param.argument.name);
|
options.params.push(param);
|
options.defaults.push(null);
|
return false;
|
}
|
|
param = parsePatternWithDefault(params);
|
for (i = 0; i < params.length; i++) {
|
validateParam(options, params[i], params[i].value);
|
}
|
|
if (param.type === Syntax.AssignmentPattern) {
|
def = param.right;
|
param = param.left;
|
++options.defaultCount;
|
}
|
|
options.params.push(param);
|
options.defaults.push(def);
|
|
return !match(')');
|
}
|
|
function parseParams(firstRestricted) {
|
var options;
|
|
options = {
|
params: [],
|
defaultCount: 0,
|
defaults: [],
|
firstRestricted: firstRestricted
|
};
|
|
expect('(');
|
|
if (!match(')')) {
|
options.paramSet = {};
|
while (startIndex < length) {
|
if (!parseParam(options)) {
|
break;
|
}
|
expect(',');
|
}
|
}
|
|
expect(')');
|
|
if (options.defaultCount === 0) {
|
options.defaults = [];
|
}
|
|
return {
|
params: options.params,
|
defaults: options.defaults,
|
stricted: options.stricted,
|
firstRestricted: options.firstRestricted,
|
message: options.message
|
};
|
}
|
|
function parseFunctionDeclaration(node, identifierIsOptional) {
|
var id = null, params = [], defaults = [], body, token, stricted, tmp, firstRestricted, message, previousStrict,
|
isGenerator, previousAllowYield;
|
|
previousAllowYield = state.allowYield;
|
|
expectKeyword('function');
|
|
isGenerator = match('*');
|
if (isGenerator) {
|
lex();
|
}
|
|
if (!identifierIsOptional || !match('(')) {
|
token = lookahead;
|
id = parseVariableIdentifier();
|
if (strict) {
|
if (isRestrictedWord(token.value)) {
|
tolerateUnexpectedToken(token, Messages.StrictFunctionName);
|
}
|
} else {
|
if (isRestrictedWord(token.value)) {
|
firstRestricted = token;
|
message = Messages.StrictFunctionName;
|
} else if (isStrictModeReservedWord(token.value)) {
|
firstRestricted = token;
|
message = Messages.StrictReservedWord;
|
}
|
}
|
}
|
|
state.allowYield = !isGenerator;
|
tmp = parseParams(firstRestricted);
|
params = tmp.params;
|
defaults = tmp.defaults;
|
stricted = tmp.stricted;
|
firstRestricted = tmp.firstRestricted;
|
if (tmp.message) {
|
message = tmp.message;
|
}
|
|
|
previousStrict = strict;
|
body = parseFunctionSourceElements();
|
if (strict && firstRestricted) {
|
throwUnexpectedToken(firstRestricted, message);
|
}
|
if (strict && stricted) {
|
tolerateUnexpectedToken(stricted, message);
|
}
|
|
strict = previousStrict;
|
state.allowYield = previousAllowYield;
|
|
return node.finishFunctionDeclaration(id, params, defaults, body, isGenerator);
|
}
|
|
function parseFunctionExpression() {
|
var token, id = null, stricted, firstRestricted, message, tmp,
|
params = [], defaults = [], body, previousStrict, node = new Node(),
|
isGenerator, previousAllowYield;
|
|
previousAllowYield = state.allowYield;
|
|
expectKeyword('function');
|
|
isGenerator = match('*');
|
if (isGenerator) {
|
lex();
|
}
|
|
state.allowYield = !isGenerator;
|
if (!match('(')) {
|
token = lookahead;
|
id = (!strict && !isGenerator && matchKeyword('yield')) ? parseNonComputedProperty() : parseVariableIdentifier();
|
if (strict) {
|
if (isRestrictedWord(token.value)) {
|
tolerateUnexpectedToken(token, Messages.StrictFunctionName);
|
}
|
} else {
|
if (isRestrictedWord(token.value)) {
|
firstRestricted = token;
|
message = Messages.StrictFunctionName;
|
} else if (isStrictModeReservedWord(token.value)) {
|
firstRestricted = token;
|
message = Messages.StrictReservedWord;
|
}
|
}
|
}
|
|
tmp = parseParams(firstRestricted);
|
params = tmp.params;
|
defaults = tmp.defaults;
|
stricted = tmp.stricted;
|
firstRestricted = tmp.firstRestricted;
|
if (tmp.message) {
|
message = tmp.message;
|
}
|
|
previousStrict = strict;
|
body = parseFunctionSourceElements();
|
if (strict && firstRestricted) {
|
throwUnexpectedToken(firstRestricted, message);
|
}
|
if (strict && stricted) {
|
tolerateUnexpectedToken(stricted, message);
|
}
|
strict = previousStrict;
|
state.allowYield = previousAllowYield;
|
|
return node.finishFunctionExpression(id, params, defaults, body, isGenerator);
|
}
|
|
// ECMA-262 14.5 Class Definitions
|
|
function parseClassBody() {
|
var classBody, token, isStatic, hasConstructor = false, body, method, computed, key;
|
|
classBody = new Node();
|
|
expect('{');
|
body = [];
|
while (!match('}')) {
|
if (match(';')) {
|
lex();
|
} else {
|
method = new Node();
|
token = lookahead;
|
isStatic = false;
|
computed = match('[');
|
if (match('*')) {
|
lex();
|
} else {
|
key = parseObjectPropertyKey();
|
if (key.name === 'static' && (lookaheadPropertyName() || match('*'))) {
|
token = lookahead;
|
isStatic = true;
|
computed = match('[');
|
if (match('*')) {
|
lex();
|
} else {
|
key = parseObjectPropertyKey();
|
}
|
}
|
}
|
method = tryParseMethodDefinition(token, key, computed, method);
|
if (method) {
|
method['static'] = isStatic; // jscs:ignore requireDotNotation
|
if (method.kind === 'init') {
|
method.kind = 'method';
|
}
|
if (!isStatic) {
|
if (!method.computed && (method.key.name || method.key.value.toString()) === 'constructor') {
|
if (method.kind !== 'method' || !method.method || method.value.generator) {
|
throwUnexpectedToken(token, Messages.ConstructorSpecialMethod);
|
}
|
if (hasConstructor) {
|
throwUnexpectedToken(token, Messages.DuplicateConstructor);
|
} else {
|
hasConstructor = true;
|
}
|
method.kind = 'constructor';
|
}
|
} else {
|
if (!method.computed && (method.key.name || method.key.value.toString()) === 'prototype') {
|
throwUnexpectedToken(token, Messages.StaticPrototype);
|
}
|
}
|
method.type = Syntax.MethodDefinition;
|
delete method.method;
|
delete method.shorthand;
|
body.push(method);
|
} else {
|
throwUnexpectedToken(lookahead);
|
}
|
}
|
}
|
lex();
|
return classBody.finishClassBody(body);
|
}
|
|
function parseClassDeclaration(identifierIsOptional) {
|
var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict;
|
strict = true;
|
|
expectKeyword('class');
|
|
if (!identifierIsOptional || lookahead.type === Token.Identifier) {
|
id = parseVariableIdentifier();
|
}
|
|
if (matchKeyword('extends')) {
|
lex();
|
superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall);
|
}
|
classBody = parseClassBody();
|
strict = previousStrict;
|
|
return classNode.finishClassDeclaration(id, superClass, classBody);
|
}
|
|
function parseClassExpression() {
|
var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict;
|
strict = true;
|
|
expectKeyword('class');
|
|
if (lookahead.type === Token.Identifier) {
|
id = parseVariableIdentifier();
|
}
|
|
if (matchKeyword('extends')) {
|
lex();
|
superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall);
|
}
|
classBody = parseClassBody();
|
strict = previousStrict;
|
|
return classNode.finishClassExpression(id, superClass, classBody);
|
}
|
|
// ECMA-262 15.2 Modules
|
|
function parseModuleSpecifier() {
|
var node = new Node();
|
|
if (lookahead.type !== Token.StringLiteral) {
|
throwError(Messages.InvalidModuleSpecifier);
|
}
|
return node.finishLiteral(lex());
|
}
|
|
// ECMA-262 15.2.3 Exports
|
|
function parseExportSpecifier() {
|
var exported, local, node = new Node(), def;
|
if (matchKeyword('default')) {
|
// export {default} from 'something';
|
def = new Node();
|
lex();
|
local = def.finishIdentifier('default');
|
} else {
|
local = parseVariableIdentifier();
|
}
|
if (matchContextualKeyword('as')) {
|
lex();
|
exported = parseNonComputedProperty();
|
}
|
return node.finishExportSpecifier(local, exported);
|
}
|
|
function parseExportNamedDeclaration(node) {
|
var declaration = null,
|
isExportFromIdentifier,
|
src = null, specifiers = [];
|
|
// non-default export
|
if (lookahead.type === Token.Keyword) {
|
// covers:
|
// export var f = 1;
|
switch (lookahead.value) {
|
case 'let':
|
case 'const':
|
declaration = parseLexicalDeclaration({inFor: false});
|
return node.finishExportNamedDeclaration(declaration, specifiers, null);
|
case 'var':
|
case 'class':
|
case 'function':
|
declaration = parseStatementListItem();
|
return node.finishExportNamedDeclaration(declaration, specifiers, null);
|
}
|
}
|
|
expect('{');
|
while (!match('}')) {
|
isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
|
specifiers.push(parseExportSpecifier());
|
if (!match('}')) {
|
expect(',');
|
if (match('}')) {
|
break;
|
}
|
}
|
}
|
expect('}');
|
|
if (matchContextualKeyword('from')) {
|
// covering:
|
// export {default} from 'foo';
|
// export {foo} from 'foo';
|
lex();
|
src = parseModuleSpecifier();
|
consumeSemicolon();
|
} else if (isExportFromIdentifier) {
|
// covering:
|
// export {default}; // missing fromClause
|
throwError(lookahead.value ?
|
Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
|
} else {
|
// cover
|
// export {foo};
|
consumeSemicolon();
|
}
|
return node.finishExportNamedDeclaration(declaration, specifiers, src);
|
}
|
|
function parseExportDefaultDeclaration(node) {
|
var declaration = null,
|
expression = null;
|
|
// covers:
|
// export default ...
|
expectKeyword('default');
|
|
if (matchKeyword('function')) {
|
// covers:
|
// export default function foo () {}
|
// export default function () {}
|
declaration = parseFunctionDeclaration(new Node(), true);
|
return node.finishExportDefaultDeclaration(declaration);
|
}
|
if (matchKeyword('class')) {
|
declaration = parseClassDeclaration(true);
|
return node.finishExportDefaultDeclaration(declaration);
|
}
|
|
if (matchContextualKeyword('from')) {
|
throwError(Messages.UnexpectedToken, lookahead.value);
|
}
|
|
// covers:
|
// export default {};
|
// export default [];
|
// export default (1 + 2);
|
if (match('{')) {
|
expression = parseObjectInitializer();
|
} else if (match('[')) {
|
expression = parseArrayInitializer();
|
} else {
|
expression = parseAssignmentExpression();
|
}
|
consumeSemicolon();
|
return node.finishExportDefaultDeclaration(expression);
|
}
|
|
function parseExportAllDeclaration(node) {
|
var src;
|
|
// covers:
|
// export * from 'foo';
|
expect('*');
|
if (!matchContextualKeyword('from')) {
|
throwError(lookahead.value ?
|
Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
|
}
|
lex();
|
src = parseModuleSpecifier();
|
consumeSemicolon();
|
|
return node.finishExportAllDeclaration(src);
|
}
|
|
function parseExportDeclaration() {
|
var node = new Node();
|
if (state.inFunctionBody) {
|
throwError(Messages.IllegalExportDeclaration);
|
}
|
|
expectKeyword('export');
|
|
if (matchKeyword('default')) {
|
return parseExportDefaultDeclaration(node);
|
}
|
if (match('*')) {
|
return parseExportAllDeclaration(node);
|
}
|
return parseExportNamedDeclaration(node);
|
}
|
|
// ECMA-262 15.2.2 Imports
|
|
function parseImportSpecifier() {
|
// import {<foo as bar>} ...;
|
var local, imported, node = new Node();
|
|
imported = parseNonComputedProperty();
|
if (matchContextualKeyword('as')) {
|
lex();
|
local = parseVariableIdentifier();
|
}
|
|
return node.finishImportSpecifier(local, imported);
|
}
|
|
function parseNamedImports() {
|
var specifiers = [];
|
// {foo, bar as bas}
|
expect('{');
|
while (!match('}')) {
|
specifiers.push(parseImportSpecifier());
|
if (!match('}')) {
|
expect(',');
|
if (match('}')) {
|
break;
|
}
|
}
|
}
|
expect('}');
|
return specifiers;
|
}
|
|
function parseImportDefaultSpecifier() {
|
// import <foo> ...;
|
var local, node = new Node();
|
|
local = parseNonComputedProperty();
|
|
return node.finishImportDefaultSpecifier(local);
|
}
|
|
function parseImportNamespaceSpecifier() {
|
// import <* as foo> ...;
|
var local, node = new Node();
|
|
expect('*');
|
if (!matchContextualKeyword('as')) {
|
throwError(Messages.NoAsAfterImportNamespace);
|
}
|
lex();
|
local = parseNonComputedProperty();
|
|
return node.finishImportNamespaceSpecifier(local);
|
}
|
|
function parseImportDeclaration() {
|
var specifiers = [], src, node = new Node();
|
|
if (state.inFunctionBody) {
|
throwError(Messages.IllegalImportDeclaration);
|
}
|
|
expectKeyword('import');
|
|
if (lookahead.type === Token.StringLiteral) {
|
// import 'foo';
|
src = parseModuleSpecifier();
|
} else {
|
|
if (match('{')) {
|
// import {bar}
|
specifiers = specifiers.concat(parseNamedImports());
|
} else if (match('*')) {
|
// import * as foo
|
specifiers.push(parseImportNamespaceSpecifier());
|
} else if (isIdentifierName(lookahead) && !matchKeyword('default')) {
|
// import foo
|
specifiers.push(parseImportDefaultSpecifier());
|
if (match(',')) {
|
lex();
|
if (match('*')) {
|
// import foo, * as foo
|
specifiers.push(parseImportNamespaceSpecifier());
|
} else if (match('{')) {
|
// import foo, {bar}
|
specifiers = specifiers.concat(parseNamedImports());
|
} else {
|
throwUnexpectedToken(lookahead);
|
}
|
}
|
} else {
|
throwUnexpectedToken(lex());
|
}
|
|
if (!matchContextualKeyword('from')) {
|
throwError(lookahead.value ?
|
Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
|
}
|
lex();
|
src = parseModuleSpecifier();
|
}
|
|
consumeSemicolon();
|
return node.finishImportDeclaration(specifiers, src);
|
}
|
|
// ECMA-262 15.1 Scripts
|
|
function parseScriptBody() {
|
var statement, body = [], token, directive, firstRestricted;
|
|
while (startIndex < length) {
|
token = lookahead;
|
if (token.type !== Token.StringLiteral) {
|
break;
|
}
|
|
statement = parseStatementListItem();
|
body.push(statement);
|
if (statement.expression.type !== Syntax.Literal) {
|
// this is not directive
|
break;
|
}
|
directive = source.slice(token.start + 1, token.end - 1);
|
if (directive === 'use strict') {
|
strict = true;
|
if (firstRestricted) {
|
tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral);
|
}
|
} else {
|
if (!firstRestricted && token.octal) {
|
firstRestricted = token;
|
}
|
}
|
}
|
|
while (startIndex < length) {
|
statement = parseStatementListItem();
|
/* istanbul ignore if */
|
if (typeof statement === 'undefined') {
|
break;
|
}
|
body.push(statement);
|
}
|
return body;
|
}
|
|
function parseProgram() {
|
var body, node;
|
|
peek();
|
node = new Node();
|
|
body = parseScriptBody();
|
return node.finishProgram(body, state.sourceType);
|
}
|
|
function filterTokenLocation() {
|
var i, entry, token, tokens = [];
|
|
for (i = 0; i < extra.tokens.length; ++i) {
|
entry = extra.tokens[i];
|
token = {
|
type: entry.type,
|
value: entry.value
|
};
|
if (entry.regex) {
|
token.regex = {
|
pattern: entry.regex.pattern,
|
flags: entry.regex.flags
|
};
|
}
|
if (extra.range) {
|
token.range = entry.range;
|
}
|
if (extra.loc) {
|
token.loc = entry.loc;
|
}
|
tokens.push(token);
|
}
|
|
extra.tokens = tokens;
|
}
|
|
function tokenize(code, options, delegate) {
|
var toString,
|
tokens;
|
|
toString = String;
|
if (typeof code !== 'string' && !(code instanceof String)) {
|
code = toString(code);
|
}
|
|
source = code;
|
index = 0;
|
lineNumber = (source.length > 0) ? 1 : 0;
|
lineStart = 0;
|
startIndex = index;
|
startLineNumber = lineNumber;
|
startLineStart = lineStart;
|
length = source.length;
|
lookahead = null;
|
state = {
|
allowIn: true,
|
allowYield: true,
|
labelSet: {},
|
inFunctionBody: false,
|
inIteration: false,
|
inSwitch: false,
|
lastCommentStart: -1,
|
curlyStack: []
|
};
|
|
extra = {};
|
|
// Options matching.
|
options = options || {};
|
|
// Of course we collect tokens here.
|
options.tokens = true;
|
extra.tokens = [];
|
extra.tokenValues = [];
|
extra.tokenize = true;
|
extra.delegate = delegate;
|
|
// The following two fields are necessary to compute the Regex tokens.
|
extra.openParenToken = -1;
|
extra.openCurlyToken = -1;
|
|
extra.range = (typeof options.range === 'boolean') && options.range;
|
extra.loc = (typeof options.loc === 'boolean') && options.loc;
|
|
if (typeof options.comment === 'boolean' && options.comment) {
|
extra.comments = [];
|
}
|
if (typeof options.tolerant === 'boolean' && options.tolerant) {
|
extra.errors = [];
|
}
|
|
try {
|
peek();
|
if (lookahead.type === Token.EOF) {
|
return extra.tokens;
|
}
|
|
lex();
|
while (lookahead.type !== Token.EOF) {
|
try {
|
lex();
|
} catch (lexError) {
|
if (extra.errors) {
|
recordError(lexError);
|
// We have to break on the first error
|
// to avoid infinite loops.
|
break;
|
} else {
|
throw lexError;
|
}
|
}
|
}
|
|
tokens = extra.tokens;
|
if (typeof extra.errors !== 'undefined') {
|
tokens.errors = extra.errors;
|
}
|
} catch (e) {
|
throw e;
|
} finally {
|
extra = {};
|
}
|
return tokens;
|
}
|
|
function parse(code, options) {
|
var program, toString;
|
|
toString = String;
|
if (typeof code !== 'string' && !(code instanceof String)) {
|
code = toString(code);
|
}
|
|
source = code;
|
index = 0;
|
lineNumber = (source.length > 0) ? 1 : 0;
|
lineStart = 0;
|
startIndex = index;
|
startLineNumber = lineNumber;
|
startLineStart = lineStart;
|
length = source.length;
|
lookahead = null;
|
state = {
|
allowIn: true,
|
allowYield: true,
|
labelSet: {},
|
inFunctionBody: false,
|
inIteration: false,
|
inSwitch: false,
|
lastCommentStart: -1,
|
curlyStack: [],
|
sourceType: 'script'
|
};
|
strict = false;
|
|
extra = {};
|
if (typeof options !== 'undefined') {
|
extra.range = (typeof options.range === 'boolean') && options.range;
|
extra.loc = (typeof options.loc === 'boolean') && options.loc;
|
extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;
|
|
if (extra.loc && options.source !== null && options.source !== undefined) {
|
extra.source = toString(options.source);
|
}
|
|
if (typeof options.tokens === 'boolean' && options.tokens) {
|
extra.tokens = [];
|
}
|
if (typeof options.comment === 'boolean' && options.comment) {
|
extra.comments = [];
|
}
|
if (typeof options.tolerant === 'boolean' && options.tolerant) {
|
extra.errors = [];
|
}
|
if (extra.attachComment) {
|
extra.range = true;
|
extra.comments = [];
|
extra.bottomRightStack = [];
|
extra.trailingComments = [];
|
extra.leadingComments = [];
|
}
|
if (options.sourceType === 'module') {
|
// very restrictive condition for now
|
state.sourceType = options.sourceType;
|
strict = true;
|
}
|
}
|
|
try {
|
program = parseProgram();
|
if (typeof extra.comments !== 'undefined') {
|
program.comments = extra.comments;
|
}
|
if (typeof extra.tokens !== 'undefined') {
|
filterTokenLocation();
|
program.tokens = extra.tokens;
|
}
|
if (typeof extra.errors !== 'undefined') {
|
program.errors = extra.errors;
|
}
|
} catch (e) {
|
throw e;
|
} finally {
|
extra = {};
|
}
|
|
return program;
|
}
|
|
// Sync with *.json manifests.
|
exports.version = '2.7.2';
|
|
exports.tokenize = tokenize;
|
|
exports.parse = parse;
|
|
// Deep copy.
|
/* istanbul ignore next */
|
exports.Syntax = (function () {
|
var name, types = {};
|
|
if (typeof Object.create === 'function') {
|
types = Object.create(null);
|
}
|
|
for (name in Syntax) {
|
if (Syntax.hasOwnProperty(name)) {
|
types[name] = Syntax[name];
|
}
|
}
|
|
if (typeof Object.freeze === 'function') {
|
Object.freeze(types);
|
}
|
|
return types;
|
}());
|
|
}));
|
/* vim: set sw=4 ts=4 et tw=80 : */
|
|
},{}],65:[function(_dereq_,module,exports){
|
/**
|
* espurify - Clone new AST without extra properties
|
*
|
* https://github.com/estools/espurify
|
*
|
* Copyright (c) 2014-2016 Takuto Wada
|
* Licensed under the MIT license.
|
* https://github.com/estools/espurify/blob/master/MIT-LICENSE.txt
|
*/
|
'use strict';
|
|
var createWhitelist = _dereq_('./lib/create-whitelist');
|
var cloneWithWhitelist = _dereq_('./lib/clone-ast');
|
|
function createCloneFunction (options) {
|
return cloneWithWhitelist(createWhitelist(options));
|
}
|
|
var espurify = createCloneFunction();
|
espurify.customize = createCloneFunction;
|
espurify.cloneWithWhitelist = cloneWithWhitelist;
|
module.exports = espurify;
|
|
},{"./lib/clone-ast":67,"./lib/create-whitelist":68}],66:[function(_dereq_,module,exports){
|
module.exports = {
|
ArrayExpression: ['type', 'elements'],
|
ArrayPattern: ['type', 'elements'],
|
ArrowFunctionExpression: ['type', 'id', 'params', 'body', 'generator', 'expression'],
|
AssignmentExpression: ['type', 'operator', 'left', 'right'],
|
AssignmentPattern: ['type', 'left', 'right'],
|
BinaryExpression: ['type', 'operator', 'left', 'right'],
|
BlockStatement: ['type', 'body'],
|
BreakStatement: ['type', 'label'],
|
CallExpression: ['type', 'callee', 'arguments'],
|
CatchClause: ['type', 'param', 'guard', 'body'],
|
ClassBody: ['type', 'body'],
|
ClassDeclaration: ['type', 'id', 'superClass', 'body'],
|
ClassExpression: ['type', 'id', 'superClass', 'body'],
|
ConditionalExpression: ['type', 'test', 'alternate', 'consequent'],
|
ContinueStatement: ['type', 'label'],
|
DebuggerStatement: ['type'],
|
DoWhileStatement: ['type', 'body', 'test'],
|
EmptyStatement: ['type'],
|
ExportAllDeclaration: ['type', 'source'],
|
ExportDefaultDeclaration: ['type', 'declaration'],
|
ExportNamedDeclaration: ['type', 'declaration', 'specifiers', 'source'],
|
ExportSpecifier: ['type', 'exported', 'local'],
|
ExpressionStatement: ['type', 'expression'],
|
ForInStatement: ['type', 'left', 'right', 'body'],
|
ForOfStatement: ['type', 'left', 'right', 'body'],
|
ForStatement: ['type', 'init', 'test', 'update', 'body'],
|
FunctionDeclaration: ['type', 'id', 'params', 'body', 'generator'],
|
FunctionExpression: ['type', 'id', 'params', 'body', 'generator'],
|
Identifier: ['type', 'name'],
|
IfStatement: ['type', 'test', 'consequent', 'alternate'],
|
ImportDeclaration: ['type', 'specifiers', 'source'],
|
ImportDefaultSpecifier: ['type', 'local'],
|
ImportNamespaceSpecifier: ['type', 'local'],
|
ImportSpecifier: ['type', 'imported', 'local'],
|
LabeledStatement: ['type', 'label', 'body'],
|
Literal: ['type', 'value', 'regex'],
|
LogicalExpression: ['type', 'operator', 'left', 'right'],
|
MemberExpression: ['type', 'object', 'property', 'computed'],
|
MetaProperty: ['type', 'meta', 'property'],
|
MethodDefinition: ['type', 'key', 'value', 'kind', 'computed', 'static'],
|
NewExpression: ['type', 'callee', 'arguments'],
|
ObjectExpression: ['type', 'properties'],
|
ObjectPattern: ['type', 'properties'],
|
Program: ['type', 'body', 'sourceType'],
|
Property: ['type', 'key', 'value', 'kind', 'method', 'shorthand', 'computed'],
|
RestElement: ['type', 'argument'],
|
ReturnStatement: ['type', 'argument'],
|
SequenceExpression: ['type', 'expressions'],
|
SpreadElement: ['type', 'argument'],
|
Super: ['type'],
|
SwitchCase: ['type', 'test', 'consequent'],
|
SwitchStatement: ['type', 'discriminant', 'cases', 'lexical'],
|
TaggedTemplateExpression: ['type', 'tag', 'quasi'],
|
TemplateElement: ['type', 'tail', 'value'],
|
TemplateLiteral: ['type', 'quasis', 'expressions'],
|
ThisExpression: ['type'],
|
ThrowStatement: ['type', 'argument'],
|
TryStatement: ['type', 'block', 'handler', 'finalizer'],
|
UnaryExpression: ['type', 'operator', 'prefix', 'argument'],
|
UpdateExpression: ['type', 'operator', 'argument', 'prefix'],
|
VariableDeclaration: ['type', 'declarations', 'kind'],
|
VariableDeclarator: ['type', 'id', 'init'],
|
WhileStatement: ['type', 'test', 'body'],
|
WithStatement: ['type', 'object', 'body'],
|
YieldExpression: ['type', 'argument', 'delegate']
|
};
|
|
},{}],67:[function(_dereq_,module,exports){
|
'use strict';
|
|
var isArray = _dereq_('core-js/library/fn/array/is-array');
|
var objectKeys = _dereq_('core-js/library/fn/object/keys');
|
var indexOf = _dereq_('core-js/library/fn/array/index-of');
|
var reduce = _dereq_('core-js/library/fn/array/reduce');
|
|
module.exports = function cloneWithWhitelist (astWhiteList) {
|
var whitelist = reduce(objectKeys(astWhiteList), function (props, key) {
|
var propNames = astWhiteList[key];
|
var prepend = (indexOf(propNames, 'type') === -1) ? ['type'] : [];
|
props[key] = prepend.concat(propNames);
|
return props;
|
}, {});
|
|
function cloneNodeOrObject (obj) {
|
var props = obj.type ? whitelist[obj.type] : null;
|
if (props) {
|
return cloneNode(obj, props);
|
} else {
|
return cloneObject(obj);
|
}
|
}
|
|
function cloneArray (ary) {
|
var i = ary.length, clone = [];
|
while (i--) {
|
clone[i] = cloneOf(ary[i]);
|
}
|
return clone;
|
}
|
|
function cloneNode (node, props) {
|
var i, len, key, clone = {};
|
for (i = 0, len = props.length; i < len; i += 1) {
|
key = props[i];
|
if (node.hasOwnProperty(key)) {
|
clone[key] = cloneOf(node[key]);
|
}
|
}
|
return clone;
|
}
|
|
function cloneObject (obj) {
|
var props = objectKeys(obj);
|
var i, len, key, clone = {};
|
for (i = 0, len = props.length; i < len; i += 1) {
|
key = props[i];
|
clone[key] = cloneOf(obj[key]);
|
}
|
return clone;
|
}
|
|
function cloneOf (val) {
|
if (typeof val === 'object' && val !== null) {
|
if (val instanceof RegExp) {
|
return new RegExp(val);
|
} else if (isArray(val)) {
|
return cloneArray(val);
|
} else {
|
return cloneNodeOrObject(val);
|
}
|
} else {
|
return val;
|
}
|
}
|
|
return cloneNodeOrObject;
|
};
|
|
},{"core-js/library/fn/array/index-of":5,"core-js/library/fn/array/is-array":6,"core-js/library/fn/array/reduce":8,"core-js/library/fn/object/keys":10}],68:[function(_dereq_,module,exports){
|
'use strict';
|
|
var defaultProps = _dereq_('./ast-properties');
|
var objectKeys = _dereq_('core-js/library/fn/object/keys');
|
var assign = _dereq_('core-js/library/fn/object/assign');
|
|
module.exports = function createWhitelist (options) {
|
var opts = assign({}, options);
|
var typeName, i, len;
|
var keys = objectKeys(defaultProps);
|
var result = {};
|
for (i = 0, len = keys.length; i < len; i += 1) {
|
typeName = keys[i];
|
result[typeName] = defaultProps[typeName].concat(opts.extra);
|
}
|
return result;
|
};
|
|
},{"./ast-properties":66,"core-js/library/fn/object/assign":9,"core-js/library/fn/object/keys":10}],69:[function(_dereq_,module,exports){
|
/*
|
Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
|
Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
|
|
Redistribution and use in source and binary forms, with or without
|
modification, are permitted provided that the following conditions are met:
|
|
* Redistributions of source code must retain the above copyright
|
notice, this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
notice, this list of conditions and the following disclaimer in the
|
documentation and/or other materials provided with the distribution.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
*/
|
/*jslint vars:false, bitwise:true*/
|
/*jshint indent:4*/
|
/*global exports:true*/
|
(function clone(exports) {
|
'use strict';
|
|
var Syntax,
|
isArray,
|
VisitorOption,
|
VisitorKeys,
|
objectCreate,
|
objectKeys,
|
BREAK,
|
SKIP,
|
REMOVE;
|
|
function ignoreJSHintError() { }
|
|
isArray = Array.isArray;
|
if (!isArray) {
|
isArray = function isArray(array) {
|
return Object.prototype.toString.call(array) === '[object Array]';
|
};
|
}
|
|
function deepCopy(obj) {
|
var ret = {}, key, val;
|
for (key in obj) {
|
if (obj.hasOwnProperty(key)) {
|
val = obj[key];
|
if (typeof val === 'object' && val !== null) {
|
ret[key] = deepCopy(val);
|
} else {
|
ret[key] = val;
|
}
|
}
|
}
|
return ret;
|
}
|
|
function shallowCopy(obj) {
|
var ret = {}, key;
|
for (key in obj) {
|
if (obj.hasOwnProperty(key)) {
|
ret[key] = obj[key];
|
}
|
}
|
return ret;
|
}
|
ignoreJSHintError(shallowCopy);
|
|
// based on LLVM libc++ upper_bound / lower_bound
|
// MIT License
|
|
function upperBound(array, func) {
|
var diff, len, i, current;
|
|
len = array.length;
|
i = 0;
|
|
while (len) {
|
diff = len >>> 1;
|
current = i + diff;
|
if (func(array[current])) {
|
len = diff;
|
} else {
|
i = current + 1;
|
len -= diff + 1;
|
}
|
}
|
return i;
|
}
|
|
function lowerBound(array, func) {
|
var diff, len, i, current;
|
|
len = array.length;
|
i = 0;
|
|
while (len) {
|
diff = len >>> 1;
|
current = i + diff;
|
if (func(array[current])) {
|
i = current + 1;
|
len -= diff + 1;
|
} else {
|
len = diff;
|
}
|
}
|
return i;
|
}
|
ignoreJSHintError(lowerBound);
|
|
objectCreate = Object.create || (function () {
|
function F() { }
|
|
return function (o) {
|
F.prototype = o;
|
return new F();
|
};
|
})();
|
|
objectKeys = Object.keys || function (o) {
|
var keys = [], key;
|
for (key in o) {
|
keys.push(key);
|
}
|
return keys;
|
};
|
|
function extend(to, from) {
|
var keys = objectKeys(from), key, i, len;
|
for (i = 0, len = keys.length; i < len; i += 1) {
|
key = keys[i];
|
to[key] = from[key];
|
}
|
return to;
|
}
|
|
Syntax = {
|
AssignmentExpression: 'AssignmentExpression',
|
AssignmentPattern: 'AssignmentPattern',
|
ArrayExpression: 'ArrayExpression',
|
ArrayPattern: 'ArrayPattern',
|
ArrowFunctionExpression: 'ArrowFunctionExpression',
|
AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
|
BlockStatement: 'BlockStatement',
|
BinaryExpression: 'BinaryExpression',
|
BreakStatement: 'BreakStatement',
|
CallExpression: 'CallExpression',
|
CatchClause: 'CatchClause',
|
ClassBody: 'ClassBody',
|
ClassDeclaration: 'ClassDeclaration',
|
ClassExpression: 'ClassExpression',
|
ComprehensionBlock: 'ComprehensionBlock', // CAUTION: It's deferred to ES7.
|
ComprehensionExpression: 'ComprehensionExpression', // CAUTION: It's deferred to ES7.
|
ConditionalExpression: 'ConditionalExpression',
|
ContinueStatement: 'ContinueStatement',
|
DebuggerStatement: 'DebuggerStatement',
|
DirectiveStatement: 'DirectiveStatement',
|
DoWhileStatement: 'DoWhileStatement',
|
EmptyStatement: 'EmptyStatement',
|
ExportAllDeclaration: 'ExportAllDeclaration',
|
ExportDefaultDeclaration: 'ExportDefaultDeclaration',
|
ExportNamedDeclaration: 'ExportNamedDeclaration',
|
ExportSpecifier: 'ExportSpecifier',
|
ExpressionStatement: 'ExpressionStatement',
|
ForStatement: 'ForStatement',
|
ForInStatement: 'ForInStatement',
|
ForOfStatement: 'ForOfStatement',
|
FunctionDeclaration: 'FunctionDeclaration',
|
FunctionExpression: 'FunctionExpression',
|
GeneratorExpression: 'GeneratorExpression', // CAUTION: It's deferred to ES7.
|
Identifier: 'Identifier',
|
IfStatement: 'IfStatement',
|
ImportDeclaration: 'ImportDeclaration',
|
ImportDefaultSpecifier: 'ImportDefaultSpecifier',
|
ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
|
ImportSpecifier: 'ImportSpecifier',
|
Literal: 'Literal',
|
LabeledStatement: 'LabeledStatement',
|
LogicalExpression: 'LogicalExpression',
|
MemberExpression: 'MemberExpression',
|
MetaProperty: 'MetaProperty',
|
MethodDefinition: 'MethodDefinition',
|
ModuleSpecifier: 'ModuleSpecifier',
|
NewExpression: 'NewExpression',
|
ObjectExpression: 'ObjectExpression',
|
ObjectPattern: 'ObjectPattern',
|
Program: 'Program',
|
Property: 'Property',
|
RestElement: 'RestElement',
|
ReturnStatement: 'ReturnStatement',
|
SequenceExpression: 'SequenceExpression',
|
SpreadElement: 'SpreadElement',
|
Super: 'Super',
|
SwitchStatement: 'SwitchStatement',
|
SwitchCase: 'SwitchCase',
|
TaggedTemplateExpression: 'TaggedTemplateExpression',
|
TemplateElement: 'TemplateElement',
|
TemplateLiteral: 'TemplateLiteral',
|
ThisExpression: 'ThisExpression',
|
ThrowStatement: 'ThrowStatement',
|
TryStatement: 'TryStatement',
|
UnaryExpression: 'UnaryExpression',
|
UpdateExpression: 'UpdateExpression',
|
VariableDeclaration: 'VariableDeclaration',
|
VariableDeclarator: 'VariableDeclarator',
|
WhileStatement: 'WhileStatement',
|
WithStatement: 'WithStatement',
|
YieldExpression: 'YieldExpression'
|
};
|
|
VisitorKeys = {
|
AssignmentExpression: ['left', 'right'],
|
AssignmentPattern: ['left', 'right'],
|
ArrayExpression: ['elements'],
|
ArrayPattern: ['elements'],
|
ArrowFunctionExpression: ['params', 'body'],
|
AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
|
BlockStatement: ['body'],
|
BinaryExpression: ['left', 'right'],
|
BreakStatement: ['label'],
|
CallExpression: ['callee', 'arguments'],
|
CatchClause: ['param', 'body'],
|
ClassBody: ['body'],
|
ClassDeclaration: ['id', 'superClass', 'body'],
|
ClassExpression: ['id', 'superClass', 'body'],
|
ComprehensionBlock: ['left', 'right'], // CAUTION: It's deferred to ES7.
|
ComprehensionExpression: ['blocks', 'filter', 'body'], // CAUTION: It's deferred to ES7.
|
ConditionalExpression: ['test', 'consequent', 'alternate'],
|
ContinueStatement: ['label'],
|
DebuggerStatement: [],
|
DirectiveStatement: [],
|
DoWhileStatement: ['body', 'test'],
|
EmptyStatement: [],
|
ExportAllDeclaration: ['source'],
|
ExportDefaultDeclaration: ['declaration'],
|
ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
|
ExportSpecifier: ['exported', 'local'],
|
ExpressionStatement: ['expression'],
|
ForStatement: ['init', 'test', 'update', 'body'],
|
ForInStatement: ['left', 'right', 'body'],
|
ForOfStatement: ['left', 'right', 'body'],
|
FunctionDeclaration: ['id', 'params', 'body'],
|
FunctionExpression: ['id', 'params', 'body'],
|
GeneratorExpression: ['blocks', 'filter', 'body'], // CAUTION: It's deferred to ES7.
|
Identifier: [],
|
IfStatement: ['test', 'consequent', 'alternate'],
|
ImportDeclaration: ['specifiers', 'source'],
|
ImportDefaultSpecifier: ['local'],
|
ImportNamespaceSpecifier: ['local'],
|
ImportSpecifier: ['imported', 'local'],
|
Literal: [],
|
LabeledStatement: ['label', 'body'],
|
LogicalExpression: ['left', 'right'],
|
MemberExpression: ['object', 'property'],
|
MetaProperty: ['meta', 'property'],
|
MethodDefinition: ['key', 'value'],
|
ModuleSpecifier: [],
|
NewExpression: ['callee', 'arguments'],
|
ObjectExpression: ['properties'],
|
ObjectPattern: ['properties'],
|
Program: ['body'],
|
Property: ['key', 'value'],
|
RestElement: [ 'argument' ],
|
ReturnStatement: ['argument'],
|
SequenceExpression: ['expressions'],
|
SpreadElement: ['argument'],
|
Super: [],
|
SwitchStatement: ['discriminant', 'cases'],
|
SwitchCase: ['test', 'consequent'],
|
TaggedTemplateExpression: ['tag', 'quasi'],
|
TemplateElement: [],
|
TemplateLiteral: ['quasis', 'expressions'],
|
ThisExpression: [],
|
ThrowStatement: ['argument'],
|
TryStatement: ['block', 'handler', 'finalizer'],
|
UnaryExpression: ['argument'],
|
UpdateExpression: ['argument'],
|
VariableDeclaration: ['declarations'],
|
VariableDeclarator: ['id', 'init'],
|
WhileStatement: ['test', 'body'],
|
WithStatement: ['object', 'body'],
|
YieldExpression: ['argument']
|
};
|
|
// unique id
|
BREAK = {};
|
SKIP = {};
|
REMOVE = {};
|
|
VisitorOption = {
|
Break: BREAK,
|
Skip: SKIP,
|
Remove: REMOVE
|
};
|
|
function Reference(parent, key) {
|
this.parent = parent;
|
this.key = key;
|
}
|
|
Reference.prototype.replace = function replace(node) {
|
this.parent[this.key] = node;
|
};
|
|
Reference.prototype.remove = function remove() {
|
if (isArray(this.parent)) {
|
this.parent.splice(this.key, 1);
|
return true;
|
} else {
|
this.replace(null);
|
return false;
|
}
|
};
|
|
function Element(node, path, wrap, ref) {
|
this.node = node;
|
this.path = path;
|
this.wrap = wrap;
|
this.ref = ref;
|
}
|
|
function Controller() { }
|
|
// API:
|
// return property path array from root to current node
|
Controller.prototype.path = function path() {
|
var i, iz, j, jz, result, element;
|
|
function addToPath(result, path) {
|
if (isArray(path)) {
|
for (j = 0, jz = path.length; j < jz; ++j) {
|
result.push(path[j]);
|
}
|
} else {
|
result.push(path);
|
}
|
}
|
|
// root node
|
if (!this.__current.path) {
|
return null;
|
}
|
|
// first node is sentinel, second node is root element
|
result = [];
|
for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
|
element = this.__leavelist[i];
|
addToPath(result, element.path);
|
}
|
addToPath(result, this.__current.path);
|
return result;
|
};
|
|
// API:
|
// return type of current node
|
Controller.prototype.type = function () {
|
var node = this.current();
|
return node.type || this.__current.wrap;
|
};
|
|
// API:
|
// return array of parent elements
|
Controller.prototype.parents = function parents() {
|
var i, iz, result;
|
|
// first node is sentinel
|
result = [];
|
for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
|
result.push(this.__leavelist[i].node);
|
}
|
|
return result;
|
};
|
|
// API:
|
// return current node
|
Controller.prototype.current = function current() {
|
return this.__current.node;
|
};
|
|
Controller.prototype.__execute = function __execute(callback, element) {
|
var previous, result;
|
|
result = undefined;
|
|
previous = this.__current;
|
this.__current = element;
|
this.__state = null;
|
if (callback) {
|
result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
|
}
|
this.__current = previous;
|
|
return result;
|
};
|
|
// API:
|
// notify control skip / break
|
Controller.prototype.notify = function notify(flag) {
|
this.__state = flag;
|
};
|
|
// API:
|
// skip child nodes of current node
|
Controller.prototype.skip = function () {
|
this.notify(SKIP);
|
};
|
|
// API:
|
// break traversals
|
Controller.prototype['break'] = function () {
|
this.notify(BREAK);
|
};
|
|
// API:
|
// remove node
|
Controller.prototype.remove = function () {
|
this.notify(REMOVE);
|
};
|
|
Controller.prototype.__initialize = function(root, visitor) {
|
this.visitor = visitor;
|
this.root = root;
|
this.__worklist = [];
|
this.__leavelist = [];
|
this.__current = null;
|
this.__state = null;
|
this.__fallback = null;
|
if (visitor.fallback === 'iteration') {
|
this.__fallback = objectKeys;
|
} else if (typeof visitor.fallback === 'function') {
|
this.__fallback = visitor.fallback;
|
}
|
|
this.__keys = VisitorKeys;
|
if (visitor.keys) {
|
this.__keys = extend(objectCreate(this.__keys), visitor.keys);
|
}
|
};
|
|
function isNode(node) {
|
if (node == null) {
|
return false;
|
}
|
return typeof node === 'object' && typeof node.type === 'string';
|
}
|
|
function isProperty(nodeType, key) {
|
return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
|
}
|
|
Controller.prototype.traverse = function traverse(root, visitor) {
|
var worklist,
|
leavelist,
|
element,
|
node,
|
nodeType,
|
ret,
|
key,
|
current,
|
current2,
|
candidates,
|
candidate,
|
sentinel;
|
|
this.__initialize(root, visitor);
|
|
sentinel = {};
|
|
// reference
|
worklist = this.__worklist;
|
leavelist = this.__leavelist;
|
|
// initialize
|
worklist.push(new Element(root, null, null, null));
|
leavelist.push(new Element(null, null, null, null));
|
|
while (worklist.length) {
|
element = worklist.pop();
|
|
if (element === sentinel) {
|
element = leavelist.pop();
|
|
ret = this.__execute(visitor.leave, element);
|
|
if (this.__state === BREAK || ret === BREAK) {
|
return;
|
}
|
continue;
|
}
|
|
if (element.node) {
|
|
ret = this.__execute(visitor.enter, element);
|
|
if (this.__state === BREAK || ret === BREAK) {
|
return;
|
}
|
|
worklist.push(sentinel);
|
leavelist.push(element);
|
|
if (this.__state === SKIP || ret === SKIP) {
|
continue;
|
}
|
|
node = element.node;
|
nodeType = node.type || element.wrap;
|
candidates = this.__keys[nodeType];
|
if (!candidates) {
|
if (this.__fallback) {
|
candidates = this.__fallback(node);
|
} else {
|
throw new Error('Unknown node type ' + nodeType + '.');
|
}
|
}
|
|
current = candidates.length;
|
while ((current -= 1) >= 0) {
|
key = candidates[current];
|
candidate = node[key];
|
if (!candidate) {
|
continue;
|
}
|
|
if (isArray(candidate)) {
|
current2 = candidate.length;
|
while ((current2 -= 1) >= 0) {
|
if (!candidate[current2]) {
|
continue;
|
}
|
if (isProperty(nodeType, candidates[current])) {
|
element = new Element(candidate[current2], [key, current2], 'Property', null);
|
} else if (isNode(candidate[current2])) {
|
element = new Element(candidate[current2], [key, current2], null, null);
|
} else {
|
continue;
|
}
|
worklist.push(element);
|
}
|
} else if (isNode(candidate)) {
|
worklist.push(new Element(candidate, key, null, null));
|
}
|
}
|
}
|
}
|
};
|
|
Controller.prototype.replace = function replace(root, visitor) {
|
var worklist,
|
leavelist,
|
node,
|
nodeType,
|
target,
|
element,
|
current,
|
current2,
|
candidates,
|
candidate,
|
sentinel,
|
outer,
|
key;
|
|
function removeElem(element) {
|
var i,
|
key,
|
nextElem,
|
parent;
|
|
if (element.ref.remove()) {
|
// When the reference is an element of an array.
|
key = element.ref.key;
|
parent = element.ref.parent;
|
|
// If removed from array, then decrease following items' keys.
|
i = worklist.length;
|
while (i--) {
|
nextElem = worklist[i];
|
if (nextElem.ref && nextElem.ref.parent === parent) {
|
if (nextElem.ref.key < key) {
|
break;
|
}
|
--nextElem.ref.key;
|
}
|
}
|
}
|
}
|
|
this.__initialize(root, visitor);
|
|
sentinel = {};
|
|
// reference
|
worklist = this.__worklist;
|
leavelist = this.__leavelist;
|
|
// initialize
|
outer = {
|
root: root
|
};
|
element = new Element(root, null, null, new Reference(outer, 'root'));
|
worklist.push(element);
|
leavelist.push(element);
|
|
while (worklist.length) {
|
element = worklist.pop();
|
|
if (element === sentinel) {
|
element = leavelist.pop();
|
|
target = this.__execute(visitor.leave, element);
|
|
// node may be replaced with null,
|
// so distinguish between undefined and null in this place
|
if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
|
// replace
|
element.ref.replace(target);
|
}
|
|
if (this.__state === REMOVE || target === REMOVE) {
|
removeElem(element);
|
}
|
|
if (this.__state === BREAK || target === BREAK) {
|
return outer.root;
|
}
|
continue;
|
}
|
|
target = this.__execute(visitor.enter, element);
|
|
// node may be replaced with null,
|
// so distinguish between undefined and null in this place
|
if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
|
// replace
|
element.ref.replace(target);
|
element.node = target;
|
}
|
|
if (this.__state === REMOVE || target === REMOVE) {
|
removeElem(element);
|
element.node = null;
|
}
|
|
if (this.__state === BREAK || target === BREAK) {
|
return outer.root;
|
}
|
|
// node may be null
|
node = element.node;
|
if (!node) {
|
continue;
|
}
|
|
worklist.push(sentinel);
|
leavelist.push(element);
|
|
if (this.__state === SKIP || target === SKIP) {
|
continue;
|
}
|
|
nodeType = node.type || element.wrap;
|
candidates = this.__keys[nodeType];
|
if (!candidates) {
|
if (this.__fallback) {
|
candidates = this.__fallback(node);
|
} else {
|
throw new Error('Unknown node type ' + nodeType + '.');
|
}
|
}
|
|
current = candidates.length;
|
while ((current -= 1) >= 0) {
|
key = candidates[current];
|
candidate = node[key];
|
if (!candidate) {
|
continue;
|
}
|
|
if (isArray(candidate)) {
|
current2 = candidate.length;
|
while ((current2 -= 1) >= 0) {
|
if (!candidate[current2]) {
|
continue;
|
}
|
if (isProperty(nodeType, candidates[current])) {
|
element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
|
} else if (isNode(candidate[current2])) {
|
element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
|
} else {
|
continue;
|
}
|
worklist.push(element);
|
}
|
} else if (isNode(candidate)) {
|
worklist.push(new Element(candidate, key, null, new Reference(node, key)));
|
}
|
}
|
}
|
|
return outer.root;
|
};
|
|
function traverse(root, visitor) {
|
var controller = new Controller();
|
return controller.traverse(root, visitor);
|
}
|
|
function replace(root, visitor) {
|
var controller = new Controller();
|
return controller.replace(root, visitor);
|
}
|
|
function extendCommentRange(comment, tokens) {
|
var target;
|
|
target = upperBound(tokens, function search(token) {
|
return token.range[0] > comment.range[0];
|
});
|
|
comment.extendedRange = [comment.range[0], comment.range[1]];
|
|
if (target !== tokens.length) {
|
comment.extendedRange[1] = tokens[target].range[0];
|
}
|
|
target -= 1;
|
if (target >= 0) {
|
comment.extendedRange[0] = tokens[target].range[1];
|
}
|
|
return comment;
|
}
|
|
function attachComments(tree, providedComments, tokens) {
|
// At first, we should calculate extended comment ranges.
|
var comments = [], comment, len, i, cursor;
|
|
if (!tree.range) {
|
throw new Error('attachComments needs range information');
|
}
|
|
// tokens array is empty, we attach comments to tree as 'leadingComments'
|
if (!tokens.length) {
|
if (providedComments.length) {
|
for (i = 0, len = providedComments.length; i < len; i += 1) {
|
comment = deepCopy(providedComments[i]);
|
comment.extendedRange = [0, tree.range[0]];
|
comments.push(comment);
|
}
|
tree.leadingComments = comments;
|
}
|
return tree;
|
}
|
|
for (i = 0, len = providedComments.length; i < len; i += 1) {
|
comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
|
}
|
|
// This is based on John Freeman's implementation.
|
cursor = 0;
|
traverse(tree, {
|
enter: function (node) {
|
var comment;
|
|
while (cursor < comments.length) {
|
comment = comments[cursor];
|
if (comment.extendedRange[1] > node.range[0]) {
|
break;
|
}
|
|
if (comment.extendedRange[1] === node.range[0]) {
|
if (!node.leadingComments) {
|
node.leadingComments = [];
|
}
|
node.leadingComments.push(comment);
|
comments.splice(cursor, 1);
|
} else {
|
cursor += 1;
|
}
|
}
|
|
// already out of owned node
|
if (cursor === comments.length) {
|
return VisitorOption.Break;
|
}
|
|
if (comments[cursor].extendedRange[0] > node.range[1]) {
|
return VisitorOption.Skip;
|
}
|
}
|
});
|
|
cursor = 0;
|
traverse(tree, {
|
leave: function (node) {
|
var comment;
|
|
while (cursor < comments.length) {
|
comment = comments[cursor];
|
if (node.range[1] < comment.extendedRange[0]) {
|
break;
|
}
|
|
if (node.range[1] === comment.extendedRange[0]) {
|
if (!node.trailingComments) {
|
node.trailingComments = [];
|
}
|
node.trailingComments.push(comment);
|
comments.splice(cursor, 1);
|
} else {
|
cursor += 1;
|
}
|
}
|
|
// already out of owned node
|
if (cursor === comments.length) {
|
return VisitorOption.Break;
|
}
|
|
if (comments[cursor].extendedRange[0] > node.range[1]) {
|
return VisitorOption.Skip;
|
}
|
}
|
});
|
|
return tree;
|
}
|
|
exports.version = _dereq_('./package.json').version;
|
exports.Syntax = Syntax;
|
exports.traverse = traverse;
|
exports.replace = replace;
|
exports.attachComments = attachComments;
|
exports.VisitorKeys = VisitorKeys;
|
exports.VisitorOption = VisitorOption;
|
exports.Controller = Controller;
|
exports.cloneEnvironment = function () { return clone({}); };
|
|
return exports;
|
}(exports));
|
/* vim: set sw=4 ts=4 et tw=80 : */
|
|
},{"./package.json":70}],70:[function(_dereq_,module,exports){
|
module.exports={"version":"4.2.0"}
|
},{}]},{},[1])(1)
|
});
|
