lazy-ass-helpful
Version:
lazy-ass plugin to automatically show helpful info for failed assertions
5,330 lines • 169 kB
JavaScript
(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);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.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(require,module,exports){
(function (global){
var check = require('check-types');
var falafel = require('falafel');
var bind = require('lodash.bind');
var findVariables = require('./src/extract-vars');
check.verify.fn(findVariables, 'could not find findVariables');
(function (env) {
var _assertionNames = ['lazyAss', 'la'];
function rewriteLazyAssMessage(opts, statement) {
var conditionNode = statement.expression.arguments[0];
var condition = conditionNode.source();
var vars = findVariables(condition, opts);
check.verify.array(vars, 'could not find variables in condition ' + condition);
/*
console.log('condition', condition, 'vars', vars);
console.log('opts', opts);
*/
condition = condition.replace(/'/g, '"');
var helpfulMessage = '\'condition [' + condition + ']\'';
vars.forEach(function (variable) {
helpfulMessage += ',\n "' + variable + ':"';
helpfulMessage += ', typeof ' + variable + ' !== "undefined" && typeof ' +
variable + ' !== "function" ? ' + variable + ' : "skipped"';
});
var msgArg = statement.expression.arguments[1];
if (msgArg) {
var message = msgArg.source();
helpfulMessage += ', ' + message;
msgArg.update(helpfulMessage);
} else {
conditionNode.update(condition + ', ' + helpfulMessage);
}
}
var rewrite;
function isLazyAss(statement) {
return _assertionNames.indexOf(statement.expression.callee.name) !== -1;
}
function rewriteTestFunction(node) {
if (node.type === 'BlockStatement') {
node.body.forEach(function (statement) {
if (statement.type === 'ExpressionStatement' &&
statement.expression.type === 'CallExpression') {
if (isLazyAss(statement)) {
rewrite(statement);
}
}
});
}
}
function wrapSingleFunction(fn, opts) {
check.verify.fn(fn, 'Expected a function');
opts = opts || {};
if (check.unemptyString(opts.assertionName) &&
!check.array(opts.assertionNames)) {
opts.assertionNames = [opts.assertionName];
}
if (check.array(opts.assertionNames)) {
_assertionNames = opts.assertionNames;
}
check.verify.array(_assertionNames,
'invalid assertion names', _assertionNames);
_assertionNames.forEach(function (name, k) {
check.verify.unemptyString(name, 'invalid assertion name ' + name + ' at ' + k);
});
// console.log('opts', JSON.stringify(opts, null, 2));
rewrite = bind(rewriteLazyAssMessage, null, opts);
var wrapped = function () {
var testSource = fn.toString();
// console.log('test source before\n' + testSource);
if (!fn.name) {
testSource = '(' + testSource + ')';
}
//check.verify.unemptyString(fn.name,
// 'for now qunit-helpful needs test function to have a name');
var output;
try {
output = falafel(testSource, rewriteTestFunction);
// console.log('rewritten function\n' + output);
} catch (err) {
console.error('Could not parse the following code\n' + testSource);
console.error(err.message);
throw err;
}
/* jshint -W061 */
var helpfulFn;
try {
helpfulFn = eval('(' + output + ')');
} catch (err) {
console.error('Could not eval the following output\n' + output);
console.error(err.message);
throw err;
}
return helpfulFn.apply(null, Array.prototype.slice.call(arguments, 0));
};
return wrapped;
}
function wrapMethod(o, name, opts) {
check.verify.unemptyString(name, 'missing method name');
opts = opts || {};
var method = o[name];
check.verify.fn(method, 'expected method ' + name + ' in object');
var wrapped = function () {
var args = Array.prototype.slice.call(arguments, 0);
args = args.map(function (a) {
if (check.fn(a)) {
a = wrapSingleFunction(a, opts);
}
return a;
});
return method.apply(o, args);
};
o[name] = wrapped;
return wrapped;
}
env.lazyAssHelpful = function (a1, a2, opts) {
if (check.fn(a1)) {
opts = a2;
return wrapSingleFunction(a1, opts);
} else if (check.object(a1) && check.unemptyString(a2)) {
return wrapMethod(a1, a2, opts);
} else {
throw new Error('Do not know how to handle arguments ' + a1 + ',' + a2);
}
};
}(typeof global === 'object' ? global : window));
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./src/extract-vars":27,"check-types":2,"falafel":3,"lodash.bind":5}],2:[function(require,module,exports){
/**
* This module exports functions for checking types
* and throwing exceptions.
*/
/*globals define, module */
(function (globals) {
'use strict';
var messages, predicates, functions, verify, maybe, not;
predicates = {
like: like,
instance: instance,
emptyObject: emptyObject,
nulled: nulled,
defined: defined,
object: object,
length: length,
array: array,
date: date,
fn: fn,
webUrl: webUrl,
gitUrl: gitUrl,
email: email,
unemptyString: unemptyString,
string: string,
evenNumber: evenNumber,
oddNumber: oddNumber,
positiveNumber: positiveNumber,
negativeNumber: negativeNumber,
intNumber : intNumber,
floatNumber : floatNumber,
number: number,
bool: bool
};
messages = {
like: 'Invalid type',
instance: 'Invalid type',
emptyObject: 'Invalid object',
nulled: 'Not null',
defined: 'Not defined',
object: 'Invalid object',
length: 'Invalid length',
array: 'Invalid array',
date: 'Invalid date',
fn: 'Invalid function',
webUrl: 'Invalid URL',
gitUrl: 'Invalid git URL',
email: 'Invalid email',
unemptyString: 'Invalid string',
string: 'Invalid string',
evenNumber: 'Invalid number',
oddNumber: 'Invalid number',
positiveNumber: 'Invalid number',
negativeNumber: 'Invalid number',
intNumber: 'Invalid number',
floatNumber: 'Invalid number',
number: 'Invalid number',
bool: 'Invalid boolean'
};
functions = {
map: map,
every: every,
any: any
};
functions = mixin(functions, predicates);
verify = createModifiedPredicates(verifyModifier);
maybe = createModifiedPredicates(maybeModifier);
not = createModifiedPredicates(notModifier);
verify.maybe = createModifiedFunctions(verifyModifier, maybe);
verify.not = createModifiedFunctions(verifyModifier, not);
exportFunctions(mixin(functions, {
verify: verify,
maybe: maybe,
not: not
}));
/**
* Public function `like`.
*
* Tests whether an object 'quacks like a duck'.
* Returns `true` if the first argument has all of
* the properties of the second, archetypal argument
* (the 'duck'). Returns `false` otherwise. If either
* argument is not an object, an exception is thrown.
*
* @param thing {object} The object to test.
* @param duck {object} The archetypal object, or
* 'duck', that the test is
* against.
*/
function like (thing, duck) {
var name;
verify.object(thing);
verify.object(duck);
for (name in duck) {
if (duck.hasOwnProperty(name)) {
if (thing.hasOwnProperty(name) === false || typeof thing[name] !== typeof duck[name]) {
return false;
}
if (object(thing[name]) && like(thing[name], duck[name]) === false) {
return false;
}
}
}
return true;
}
/**
* Public function `instance`.
*
* Returns `true` if an object is an instance of a prototype,
* `false` otherwise.
*
* @param thing {object} The object to test.
* @param prototype {function} The prototype that the
* test is against.
*/
function instance (thing, prototype) {
if (!defined(thing) || nulled(thing)) {
return false;
}
if (fn(prototype) && thing instanceof prototype) {
return true;
}
return false;
}
/**
* Public function `emptyObject`.
*
* Returns `true` if something is an empty, non-null,
* non-array object, `false` otherwise.
*
* @param thing The thing to test.
*/
function emptyObject (thing) {
var property;
if (object(thing)) {
for (property in thing) {
if (thing.hasOwnProperty(property)) {
return false;
}
}
return true;
}
return false;
}
/**
* Public function `nulled`.
*
* Returns `true` if something is null,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function nulled (thing) {
return thing === null;
}
/**
* Public function `defined`.
*
* Returns `true` if something is not undefined,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function defined (thing) {
return thing !== void 0;
}
/**
* Public function `object`.
*
* Returns `true` if something is a non-null, non-array,
* non-date object, `false` otherwise.
*
* @param thing The thing to test.
*/
function object (thing) {
return typeof thing === 'object' && !nulled(thing) && !array(thing) && !date(thing);
}
/**
* Public function `length`.
*
* Returns `true` if something is has a length property
* that equals `value`, `false` otherwise.
*
* @param thing The thing to test.
* @param value The required length to test against.
*/
function length (thing, value) {
return thing && thing.length === value;
}
/**
* Public function `array`.
*
* Returns `true` something is an array, `false` otherwise.
*
* @param thing The thing to test.
*/
function array (thing) {
if (Array.isArray) {
return Array.isArray(thing);
}
return Object.prototype.toString.call(thing) === '[object Array]';
}
/**
* Public function `date`.
*
* Returns `true` something is a date, `false` otherwise.
*
* @param thing The thing to test.
*/
function date (thing) {
return Object.prototype.toString.call(thing) === '[object Date]';
}
/**
* Public function `fn`.
*
* Returns `true` if something is function, `false` otherwise.
*
* @param thing The thing to test.
*/
function fn (thing) {
return typeof thing === 'function';
}
/**
* Public function `webUrl`.
*
* Returns `true` if something is an HTTP or HTTPS URL,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function webUrl (thing) {
return unemptyString(thing) && /^https?:\/\/.+/.test(thing);
}
/**
* Public function `gitUrl`.
*
* Returns `true` if something is a git+ssh, git+http or git+https URL,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function gitUrl (thing) {
return unemptyString(thing) && /^git\+(ssh|https?):\/\/.+/.test(thing);
}
/**
* Public function `email`.
*
* Returns `true` if something seems like a valid email address,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function email (thing) {
return unemptyString(thing) && /\S+@\S+/.test(thing);
}
/**
* Public function `unemptyString`.
*
* Returns `true` if something is a non-empty string, `false`
* otherwise.
*
* @param thing The thing to test.
*/
function unemptyString (thing) {
return string(thing) && thing !== '';
}
/**
* Public function `string`.
*
* Returns `true` if something is a string, `false` otherwise.
*
* @param thing The thing to test.
*/
function string (thing) {
return typeof thing === 'string';
}
/**
* Public function `oddNumber`.
*
* Returns `true` if something is an odd number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function oddNumber (thing) {
return number(thing) && (thing % 2 === 1 || thing % 2 === -1);
}
/**
* Public function `evenNumber`.
*
* Returns `true` if something is an even number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function evenNumber (thing) {
return number(thing) && thing % 2 === 0;
}
/**
* Public function `intNumber`.
*
* Returns `true` if something is an integer number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function intNumber (thing) {
return number(thing) && thing % 1 === 0;
}
/**
* Public function `floatNumber`.
*
* Returns `true` if something is a float number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function floatNumber (thing) {
return number(thing) && thing % 1 !== 0;
}
/**
* Public function `positiveNumber`.
*
* Returns `true` if something is a positive number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function positiveNumber (thing) {
return number(thing) && thing > 0;
}
/**
* Public function `negativeNumber`.
*
* Returns `true` if something is a positive number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function negativeNumber (thing) {
return number(thing) && thing < 0;
}
/**
* Public function `number`.
*
* Returns `true` if something is a real number,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function number (thing) {
return typeof thing === 'number' &&
isNaN(thing) === false &&
thing !== Number.POSITIVE_INFINITY &&
thing !== Number.NEGATIVE_INFINITY;
}
/**
* Public function `bool`.
*
* Returns `true` if something is a bool,
* `false` otherwise.
*
* @param thing The thing to test.
*/
function bool (thing) {
return thing === false || thing === true;
}
/**
* Public function `map`.
*
* Returns the results hash of mapping each predicate to the
* corresponding thing's property. Similar to `like` but
* with functions instead of values.
*
* @param things {object} The things to test.
* @param predicates {object} The map of functions to call against
* the corresponding properties from `things`.
*/
function map (things, predicates) {
var property, result = {}, predicate;
verify.object(things);
verify.object(predicates);
for (property in predicates) {
if (predicates.hasOwnProperty(property)) {
predicate = predicates[property];
if (fn(predicate)) {
result[property] = predicate(things[property]);
} else if (object(predicate)) {
result[property] = map(things[property], predicate);
}
}
}
return result;
}
/**
* Public function `every`
*
* Returns the conjunction of all booleans in a hash.
*
* @param predicateResults {object} The hash of evaluated predicates.
*/
function every (predicateResults) {
var property, value;
verify.object(predicateResults);
for (property in predicateResults) {
if (predicateResults.hasOwnProperty(property)) {
value = predicateResults[property];
if (object(value) && every(value) === false) {
return false;
}
if (value === false) {
return false;
}
}
}
return true;
}
/**
* Public function `any`
*
* Returns the disjunction of all booleans in a hash.
*
* @param predicateResults {object} The hash of evaluated predicates.
*/
function any (predicateResults) {
var property, value;
verify.object(predicateResults);
for (property in predicateResults) {
if (predicateResults.hasOwnProperty(property)) {
value = predicateResults[property];
if (object(value) && any(value)) {
return true;
}
if (value === true) {
return true;
}
}
}
return false;
}
function mixin (target, source) {
var property;
for (property in source) {
if (source.hasOwnProperty(property)) {
target[property] = source[property];
}
}
return target;
}
/**
* Public modifier `verify`.
*
* Throws if `predicate` returns `false`.
*/
function verifyModifier (predicate, defaultMessage) {
return function () {
var message;
if (predicate.apply(null, arguments) === false) {
message = arguments[arguments.length - 1];
throw new Error(unemptyString(message) ? message : defaultMessage);
}
};
}
/**
* Public modifier `maybe`.
*
* Returns `true` if `predicate` is `null` or `undefined`,
* otherwise propagates the return value from `predicate`.
*/
function maybeModifier (predicate) {
return function () {
if (!defined(arguments[0]) || nulled(arguments[0])) {
return true;
}
return predicate.apply(null, arguments);
};
}
/**
* Public modifier `not`.
*
* Negates `predicate`.
*/
function notModifier (predicate) {
return function () {
return !predicate.apply(null, arguments);
};
}
function createModifiedPredicates (modifier) {
return createModifiedFunctions(modifier, predicates);
}
function createModifiedFunctions (modifier, functions) {
var name, result = {};
for (name in functions) {
if (functions.hasOwnProperty(name)) {
result[name] = modifier(functions[name], messages[name]);
}
}
return result;
}
function exportFunctions (functions) {
if (typeof define === 'function' && define.amd) {
define(function () {
return functions;
});
} else if (typeof module !== 'undefined' && module !== null && module.exports) {
module.exports = functions;
} else {
globals.check = functions;
}
}
}(this));
},{}],3:[function(require,module,exports){
var parse = require('esprima').parse;
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) keys.push(key);
return keys;
};
var forEach = function (xs, fn) {
if (xs.forEach) return xs.forEach(fn);
for (var i = 0; i < xs.length; i++) {
fn.call(xs, xs[i], i, xs);
}
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
module.exports = function (src, opts, fn) {
if (typeof opts === 'function') {
fn = opts;
opts = {};
}
if (typeof src === 'object') {
opts = src;
src = opts.source;
delete opts.source;
}
src = src === undefined ? opts.source : src;
opts.range = true;
if (typeof src !== 'string') src = String(src);
var ast = parse(src, opts);
var result = {
chunks : src.split(''),
toString : function () { return result.chunks.join('') },
inspect : function () { return result.toString() }
};
var index = 0;
(function walk (node, parent) {
insertHelpers(node, parent, result.chunks);
forEach(objectKeys(node), function (key) {
if (key === 'parent') return;
var child = node[key];
if (isArray(child)) {
forEach(child, function (c) {
if (c && typeof c.type === 'string') {
walk(c, node);
}
});
}
else if (child && typeof child.type === 'string') {
insertHelpers(child, node, result.chunks);
walk(child, node);
}
});
fn(node);
})(ast, undefined);
return result;
};
function insertHelpers (node, parent, chunks) {
if (!node.range) return;
node.parent = parent;
node.source = function () {
return chunks.slice(
node.range[0], node.range[1]
).join('');
};
if (node.update && typeof node.update === 'object') {
var prev = node.update;
forEach(objectKeys(prev), function (key) {
update[key] = prev[key];
});
node.update = update;
}
else {
node.update = update;
}
function update (s) {
chunks[node.range[0]] = s;
for (var i = node.range[0] + 1; i < node.range[1]; i++) {
chunks[i] = '';
}
};
}
},{"esprima":4}],4:[function(require,module,exports){
/*
Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*jslint bitwise:true plusplus:true */
/*global esprima:true, define:true, exports:true, window: true,
throwError: true, generateStatement: true, peek: true,
parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
parseFunctionDeclaration: true, parseFunctionExpression: true,
parseFunctionSourceElements: true, parseVariableIdentifier: true,
parseLeftHandSideExpression: true,
parseStatement: true, parseSourceElement: true */
(function (root, factory) {
'use strict';
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
// Rhino, and plain browser loading.
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,
Syntax,
PropertyKind,
Messages,
Regex,
SyntaxTreeDelegate,
source,
strict,
index,
lineNumber,
lineStart,
length,
delegate,
lookahead,
state,
extra;
Token = {
BooleanLiteral: 1,
EOF: 2,
Identifier: 3,
Keyword: 4,
NullLiteral: 5,
NumericLiteral: 6,
Punctuator: 7,
StringLiteral: 8
};
TokenName = {};
TokenName[Token.BooleanLiteral] = 'Boolean';
TokenName[Token.EOF] = '<end>';
TokenName[Token.Identifier] = 'Identifier';
TokenName[Token.Keyword] = 'Keyword';
TokenName[Token.NullLiteral] = 'Null';
TokenName[Token.NumericLiteral] = 'Numeric';
TokenName[Token.Punctuator] = 'Punctuator';
TokenName[Token.StringLiteral] = 'String';
Syntax = {
AssignmentExpression: 'AssignmentExpression',
ArrayExpression: 'ArrayExpression',
BlockStatement: 'BlockStatement',
BinaryExpression: 'BinaryExpression',
BreakStatement: 'BreakStatement',
CallExpression: 'CallExpression',
CatchClause: 'CatchClause',
ConditionalExpression: 'ConditionalExpression',
ContinueStatement: 'ContinueStatement',
DoWhileStatement: 'DoWhileStatement',
DebuggerStatement: 'DebuggerStatement',
EmptyStatement: 'EmptyStatement',
ExpressionStatement: 'ExpressionStatement',
ForStatement: 'ForStatement',
ForInStatement: 'ForInStatement',
FunctionDeclaration: 'FunctionDeclaration',
FunctionExpression: 'FunctionExpression',
Identifier: 'Identifier',
IfStatement: 'IfStatement',
Literal: 'Literal',
LabeledStatement: 'LabeledStatement',
LogicalExpression: 'LogicalExpression',
MemberExpression: 'MemberExpression',
NewExpression: 'NewExpression',
ObjectExpression: 'ObjectExpression',
Program: 'Program',
Property: 'Property',
ReturnStatement: 'ReturnStatement',
SequenceExpression: 'SequenceExpression',
SwitchStatement: 'SwitchStatement',
SwitchCase: 'SwitchCase',
ThisExpression: 'ThisExpression',
ThrowStatement: 'ThrowStatement',
TryStatement: 'TryStatement',
UnaryExpression: 'UnaryExpression',
UpdateExpression: 'UpdateExpression',
VariableDeclaration: 'VariableDeclaration',
VariableDeclarator: 'VariableDeclarator',
WhileStatement: 'WhileStatement',
WithStatement: 'WithStatement'
};
PropertyKind = {
Data: 1,
Get: 2,
Set: 4
};
// Error messages should be identical to V8.
Messages = {
UnexpectedToken: 'Unexpected token %0',
UnexpectedNumber: 'Unexpected number',
UnexpectedString: 'Unexpected string',
UnexpectedIdentifier: 'Unexpected identifier',
UnexpectedReserved: 'Unexpected reserved word',
UnexpectedEOS: 'Unexpected end of input',
NewlineAfterThrow: 'Illegal newline after throw',
InvalidRegExp: 'Invalid regular expression',
UnterminatedRegExp: 'Invalid regular expression: missing /',
InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
InvalidLHSInForIn: 'Invalid left-hand side in for-in',
MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
NoCatchOrFinally: 'Missing catch or finally after try',
UnknownLabel: 'Undefined label \'%0\'',
Redeclaration: '%0 \'%1\' has already been declared',
IllegalContinue: 'Illegal continue statement',
IllegalBreak: 'Illegal break statement',
IllegalReturn: 'Illegal return statement',
StrictModeWith: 'Strict mode code may not include a with statement',
StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
StrictVarName: 'Variable name may not be eval or arguments in strict mode',
StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
StrictDelete: 'Delete of an unqualified identifier in strict mode.',
StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode',
AccessorDataProperty: 'Object literal may not have data and accessor property with the same name',
AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name',
StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
StrictReservedWord: 'Use of future reserved word in strict mode'
};
// See also tools/generate-unicode-regex.py.
Regex = {
NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\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\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\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\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\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\u0d02\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\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\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\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-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\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\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\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\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\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-\ufe26\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]')
};
// Ensure the condition is true, otherwise throw an error.
// This is only to have a better contract semantic, i.e. another safety net
// to catch a logic error. The condition shall be fulfilled in normal case.
// Do NOT use this to enforce a certain condition on any user input.
function assert(condition, message) {
if (!condition) {
throw new Error('ASSERT: ' + message);
}
}
function isDecimalDigit(ch) {
return (ch >= 48 && ch <= 57); // 0..9
}
function isHexDigit(ch) {
return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
}
function isOctalDigit(ch) {
return '01234567'.indexOf(ch) >= 0;
}
// 7.2 White Space
function isWhiteSpace(ch) {
return (ch === 32) || // space
(ch === 9) || // tab
(ch === 0xB) ||
(ch === 0xC) ||
(ch === 0xA0) ||
(ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
}
// 7.3 Line Terminators
function isLineTerminator(ch) {
return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
}
// 7.6 Identifier Names and Identifiers
function isIdentifierStart(ch) {
return (ch === 36) || (ch === 95) || // $ (dollar) and _ (underscore)
(ch >= 65 && ch <= 90) || // A..Z
(ch >= 97 && ch <= 122) || // a..z
(ch === 92) || // \ (backslash)
((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
}
function isIdentifierPart(ch) {
return (ch === 36) || (ch === 95) || // $ (dollar) and _ (underscore)
(ch >= 65 && ch <= 90) || // A..Z
(ch >= 97 && ch <= 122) || // a..z
(ch >= 48 && ch <= 57) || // 0..9
(ch === 92) || // \ (backslash)
((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
}
// 7.6.1.2 Future Reserved Words
function isFutureReservedWord(id) {
switch (id) {
case 'class':
case 'enum':
case 'export':
case 'extends':
case 'import':
case 'super':
return true;
default:
return false;
}
}
function isStrictModeReservedWord(id) {
switch (id) {
case 'implements':
case 'interface':
case 'package':
case 'private':
case 'protected':
case 'public':
case 'static':
case 'yield':
case 'let':
return true;
default:
return false;
}
}
function isRestrictedWord(id) {
return id === 'eval' || id === 'arguments';
}
// 7.6.1.1 Keywords
function isKeyword(id) {
var keywordOverride;
if (typeof extra.isKeyword === 'function') {
keywordOverride = extra.isKeyword(id);
if (typeof keywordOverride === 'boolean'
|| typeof keywordOverride === 'string') {
return keywordOverride;
}
}
if (strict && isStrictModeReservedWord(id)) {
return true;
}
// 'const' is specialized as Keyword in V8.
// 'yield' and 'let' are for compatiblity with SpiderMonkey and ES.next.
// Some others are from future reserved words.
switch (id.length) {
case 2:
return (id === 'if') || (id === 'in') || (id === 'do');
case 3:
return (id === 'var') || (id === 'for') || (id === 'new') ||
(id === 'try') || (id === 'let');
case 4:
return (id === 'this') || (id === 'else') || (id === 'case') ||
(id === 'void') || (id === 'with') || (id === 'enum');
case 5:
return (id === 'while') || (id === 'break') || (id === 'catch') ||
(id === 'throw') || (id === 'const') || (id === 'yield') ||
(id === 'class') || (id === 'super');
case 6:
return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
(id === 'switch') || (id === 'export') || (id === 'import');
case 7:
return (id === 'default') || (id === 'finally') || (id === 'extends');
case 8:
return (id === 'function') || (id === 'continue') || (id === 'debugger');
case 10:
return (id === 'instanceof');
default:
return false;
}
}
// 7.4 Comments
function skipComment() {
var ch, blockComment, lineComment;
blockComment = false;
lineComment = false;
while (index < length) {
ch = source.charCodeAt(index);
if (lineComment) {
++index;
if (isLineTerminator(ch)) {
lineComment = false;
if (ch === 13 && source.charCodeAt(index) === 10) {
++index;
}
++lineNumber;
lineStart = index;
}
} else if (blockComment) {
if (isLineTerminator(ch)) {
if (ch === 13 && source.charCodeAt(index + 1) === 10) {
++index;
}
++lineNumber;
++index;
lineStart = index;
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
} else {
ch = source.charCodeAt(index++);
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
// Block comment ends with '*/' (char #42, char #47).
if (ch === 42) {
ch = source.charCodeAt(index);
if (ch === 47) {
++index;
blockComment = false;
}
}
}
} else if (ch === 47) {
ch = source.charCodeAt(index + 1);
// Line comment starts with '//' (char #47, char #47).
if (ch === 47) {
index += 2;
lineComment = true;
} else if (ch === 42) {
// Block comment starts with '/*' (char #47, char #42).
index += 2;
blockComment = true;
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
} else {
break;
}
} else if (isWhiteSpace(ch)) {
++index;
} else if (isLineTerminator(ch)) {
++index;
if (ch === 13 && source.charCodeAt(index) === 10) {
++index;
}
++lineNumber;
lineStart = index;
} else {
break;
}
}
}
function scanHexEscape(prefix) {
var i, len, ch, code = 0;
len = (prefix === 'u') ? 4 : 2;
for (i = 0; i < len; ++i) {
if (index < length && isHexDigit(source[index])) {
ch = source[index++];
code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
} else {
return '';
}
}
return String.fromCharCode(code);
}
function getEscapedIdentifier() {
var ch, id;
ch = source.charCodeAt(index++);
id = String.fromCharCode(ch);
// '\u' (char #92, char #117) denotes an escaped character.
if (ch === 92) {
if (source.charCodeAt(index) !== 117) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
++index;
ch = scanHexEscape('u');
if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
id = ch;
}
while (index < length) {
ch = source.charCodeAt(index);
if (!isIdentifierPart(ch)) {
break;
}
++index;
id += String.fromCharCode(ch);
// '\u' (char #92, char #117) denotes an escaped character.
if (ch === 92) {
id = id.substr(0, id.length - 1);
if (source.charCodeAt(index) !== 117) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
++index;
ch = scanHexEscape('u');
if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
id += ch;
}
}
return id;
}
function getIdentifier() {
var start, ch;
start = index++;
while (index < length) {
ch = source.charCodeAt(index);
if (ch === 92) {
// Blackslash (char #92) marks Unicode escape sequence.
index = start;
return getEscapedIdentifier();
}
if (isIdentifierPart(ch)) {
++index;
} else {
break;
}
}
return source.slice(start, index);
}
function scanIdentifier() {
var start, id, fakeId, type;
start = index;
// Backslash (char #92) starts an escaped character.
id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();
// There is no keyword or literal with only one character.
// Thus, it must be an identifier.
if (id.length === 1) {
type = Token.Identifier;
} else if (fakeId = isKeyword(id)) {
if (typeof fakeId === 'string') {
if (fakeId === 'block') {
lookahead = advance();
lookahead.keyword = id;
return lookahead;
}
id = fakeId;
}
type = Token.Keyword;
} else if (id === 'null') {
type = Token.NullLiteral;
} else if (id === 'true' || id === 'false') {
type = Token.BooleanLiteral;
} else {
type = Token.Identifier;
}
return {
type: type,
value: id,
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
// 7.7 Punctuators
function scanPunctuator() {
var start = index,
code = source.charCodeAt(index),
code2,
ch1 = source[index],
ch2,
ch3,
ch4;
switch (code) {
// Check for most common single-character punctuators.
case 46: // . dot
case 40: // ( open bracket
case 41: // ) close bracket
case 59: // ; semicolon
case 44: // , comma
case 123: // { open curly brace
case 125: // } close curly brace
case 91: // [
case 93: // ]
case 58: // :
case 63: // ?
case 126: // ~
++index;
return {
type: Token.Punctuator,
value: String.fromCharCode(code),
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
default:
code2 = source.charCodeAt(index + 1);
// '=' (char #61) marks an assignment or comparison operator.
if (code2 === 61) {
switch (code) {
case 37: // %
case 38: // &
case 42: // *:
case 43: // +
case 45: // -
case 47: // /
case 60: // <
case 62: // >
case 94: // ^
case 124: // |
index += 2;
return {
type: Token.Punctuator,
value: String.fromCharCode(code) + String.fromCharCode(code2),
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
case 33: // !
case 61: // =
index += 2;
// !== and ===
if (source.charCodeAt(index) === 61) {
++index;
}
return {
type: Token.Punctuator,
value: source.slice(start, index),
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
default:
break;
}
}
break;
}
// Peek more characters.
ch2 = source[index + 1];
ch3 = source[index + 2];
ch4 = source[index + 3];
// 4-character punctuator: >>>=
if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
if (ch4 === '=') {
index += 4;
return {
type: Token.Punctuator,
value: '>>>=',
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
}
// 3-character punctuators: === !== >>> <<= >>=
if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
index += 3;
return {
type: Token.Punctuator,
value: '>>>',
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
index += 3;
return {
type: Token.Punctuator,
value: '<<=',
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
index += 3;
return {
type: Token.Punctuator,
value: '>>=',
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
// Other 2-character punctuators: ++ -- << >> && ||
if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
index += 2;
return {
type: Token.Punctuator,
value: ch1 + ch2,
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
++index;
return {
type: Token.Punctuator,
value: ch1,
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
// 7.8.3 Numeric Literals
function scanHexLiteral(start) {
var number = '';
while (index < length) {
if (!isHexDigit(source[index])) {
break;
}
number += source[index++];
}
if (number.length === 0) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
if (isIdentifierStart(source.charCodeAt(index))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
return {
type: Token.NumericLiteral,
value: parseInt('0x' + number, 16),
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
function scanOctalLiteral(start) {
var number = '0' + source[index++];
while (index < length) {
if (!isOctalDigit(source[index])) {
break;
}
number += source[index++];
}
if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
return {
type: Token.NumericLiteral,
value: parseInt(number, 8),
octal: true,
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
function scanNumericLiteral() {
var number, start, ch;
ch = source[index];
assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
'Numeric literal must start with a decimal digit or a decimal point');
start = index;
number = '';
if (ch !== '.') {
number = source[index++];
ch = source[index];
// Hex number starts with '0x'.
// Octal number starts with '0'.
if (number === '0') {
if (ch === 'x' || ch === 'X') {
++index;
return scanHexLiteral(start);
}
if (isOctalDigit(ch)) {
return scanOctalLiteral(start);
}
// decimal number starts with '0' such as '09' is illegal.
if (ch && isDecimalDigit(ch.charCodeAt(0))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
}
while (isDecimalDigit(source.charCodeAt(index))) {
number += source[index++];
}
ch = source[index];
}
if (ch === '.') {
number += source[index++];
while (isDecimalDigit(source.charCodeAt(index))) {
number += source[index++];
}
ch = source[index];
}
if (ch === 'e' || ch === 'E') {
number += source[index++];
ch = source[index];
if (ch === '+' || ch === '-') {
number += source[index++];
}
if (isDecimalDigit(source.charCodeAt(index))) {
while (isDecimalDigit(source.charCodeAt(index))) {
number += source[index++];
}
} else {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
}
if (isIdentifierStart(source.charCodeAt(index))) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
return {
type: Token.NumericLiteral,
value: parseFloat(number),
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
// 7.8.4 String Literals
function scanStringLiteral() {
var str = '', quote, start, ch, code, unescaped, restore, octal = false;
quote = source[index];
assert((quote === '\'' || quote === '"'),
'String literal must starts with a quote');
start = index;
++index;
while (index < length) {
ch = source[index++];
if (ch === quote) {
quote = '';
break;
} else if (ch === '\\') {
ch = source[index++];
if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
switch (ch) {
case 'n':
str += '\n';
break;
case 'r':
str += '\r';
break;
case 't':
str += '\t';
break;
case 'u':
case 'x':
restore = index;
unescaped = scanHexEscape(ch);
if (unescaped) {
str += unescaped;
} else {
index = restore;
str += ch;
}
break;
case 'b':
str += '\b';
break;
case 'f':
str += '\f';
break;
case 'v':
str += '\v';
break;
default:
if (isOctalDigit(ch)) {
code = '01234567'.indexOf(ch);
// \0 is not octal escape sequence
if (code !== 0) {
octal = true;
}
if (index < length && isOctalDigit(source[index])) {
octal = true;
code = code * 8 + '01234567'.indexOf(source[index++]);
// 3 digits are only allowed when string starts
// with 0, 1, 2, 3
if ('0123'.indexOf(ch) >= 0 &&
index < length &&
isOctalDigit(source[index])) {
code = code * 8 + '01234567'.indexOf(source[index++]);
}
}
str += String.fromCharCode(code);
} else {
str += ch;
}
break;
}
} else {
++lineNumber;
if (ch === '\r' && source[index] === '\n') {
++index;
}
}
} else if (isLineTerminator(ch.charCodeAt(0))) {
break;
} else {
str += ch;
}
}
if (quote !== '') {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
return {
type: Token.StringLiteral,
value: str,
octal: octal,
lineNumber: lineNumber,
lineStart: lineStart,
range: [start, index]
};
}
function scanRegExp() {
var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false;
lookahead = null;
skipComment();
start = index;
ch = source[index];
assert(ch === '/', 'Regular expression literal must start with a slash');
str = source[index++];
while (index < length) {
ch = source[index++];
str += ch;
if (classMarker) {
if (ch === ']') {
classMarker = false;
}
} else {
if (ch === '\\') {
ch = source[index++];
// ECMA-262 7.8.5
if (isLineTerminator(ch.charCodeAt(0))) {
throwError({}, Messages.UnterminatedRegExp);
}
str += ch;
} else if (ch === '/') {
terminated = true;
break;
} else if (ch === '[') {
classMarker = true;
} else if (isLineTerminator(ch.charCodeAt(0))) {
throwError({}, Messages.UnterminatedRegExp);
}
}
}
if (!terminated) {
throwError({}, Messages.UnterminatedRegExp);
}
// Exclude leading and trailing slash.
pattern = str.substr(1, str.length - 2);
flags = '';
while (index < length) {
ch = source[index];
if (!isIdentifierPart(ch.charCodeAt(0))) {
break;
}
++index;
if (ch === '\\' && index < length) {
ch = source[index];
if (ch === 'u') {
++index;
restore = index;
ch = scanHexEscape('u');
if (ch) {
flags += ch;
for (str += '\\u'; restore < index; ++restore) {
str += source[restore];
}
} else {
index = restore;
flags += 'u';
str += '\\u';
}
} else {
str += '\\';
}
} else {
flags += ch;
str += ch;
}
}
try {
value = new RegExp(pattern, flags);
} catch (e) {
throwError({}, Messages.InvalidRegExp);
}
peek();
return {
literal: str,
value: value,
range: [start, index]
};
}
function isIdentifierName(token) {
return token.type === Token.Identifier ||
token.type === Token.Keyword ||
token.type === Token.BooleanLiteral ||
token.type === Token.NullLiteral;
}
function advance() {
var ch;
skipComment();
if (index >= length) {
return {
type: Token.EOF,
lineNumber: lineNumber,
lineStart: lineStart,
range: [index, index]
};
}
ch = source.charCodeAt(index);
// Very common: ( and ) and ;
if (ch === 40 || ch === 41 || ch === 58) {
return scanPunctuator();
}
// String literal starts with single quote (#39) or double quote (#34).
if (ch === 39 || ch === 34) {
return scanStringLiteral();
}
if (isIdentifierStart(ch)) {
return scanIdentifier();
}
// Dot (.) char #46 can also start a floating-point number, hence the need
// to check the next character.
if (ch === 46) {
if (isDecimalDigit(source.charCodeAt(index + 1))) {
return scanNumericLiteral();
}
return scanPunctuator();
}
if (isDecimalDigit(ch)) {
return scanNumericLiteral();
}
return scanPunctuator();
}
function lex() {
var token;
token = lookahead;
index = token.range[1];
lineNumber = token.lineNumber;
lineStart = token.lineStart;
lookahead = advance();
index = token.range[1];
lineNumber = token.lineNumber;
lineStart = token.lineStart;
return token;
}
function peek() {
var pos, line, start;
pos = index;
line = lineNumber;
start = lineStart;
lookahead = advance();
index = pos;
lineNumber = line;
lineStart = start;
}
SyntaxTreeDelegate = {
name: 'SyntaxTree',
postProcess: function (node) {
return node;
},
createArrayExpression: function (elements) {
return {
type: Syntax.ArrayExpression,
elements: elements
};
},
createAssignmentExpression: function (operator, left, right) {
return {
type: Syntax.AssignmentExpression,
operator: operator,
left: left,
right: right
};
},
createBinaryExpression: function (operator, left, right) {
var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
Syntax.BinaryExpression;
return {
type: type,
operator: operator,
left: left,
right: right
};
},
createBlockStatement: function (body) {
return {
type: Syntax.BlockStatement,
body: body
};
},
createBreakStatement: function (label) {
return {
type: Syntax.BreakStatement,
label: label
};
},
createCallExpression: function (callee, args) {
return {
type: Syntax.CallExpression,
callee: callee,
'arguments': args
};
},
createCatchClause: function (param, body) {
return {
type: Syntax.CatchClause,
param: param,
body: body
};
},
createConditionalExpression: function (test, consequent, alternate) {
return {
type: Syntax.ConditionalExpression,
test: test,
consequent: consequent,
alternate: alternate
};
},
createContinueStatement: function (label) {
return {
type: Syntax.ContinueStatement,
label: label
};
},
createDebuggerStatement: function () {
return {
type: Syntax.DebuggerStatement
};
},
createDoWhileStatement: function (body, test) {
return {
type: Syntax.DoWhileStatement,
body: body,
test: test
};
},
createEmptyStatement: function () {
return {
type: Syntax.EmptyStatement
};
},
createExpressionStatement: function (expression) {
return {
type: Syntax.ExpressionStatement,
expression: expression
};
},
createForStatement: function (init, test, update, body) {
return {
type: Syntax.ForStatement,
init: init,
test: test,
update: update,
body: body
};
},
createForInStatement: function (left, right, body) {
return {
type: Syntax.ForInStatement,
left: left,
right: right,
body: body,
each: false
};
},
createFunctionDeclaration: function (id, params, defaults, body) {
return {
type: Syntax.FunctionDeclaration,
id: id,
params: params,
defaults: defaults,
body: body,
rest: null,
generator: false,
expression: false
};
},
createFunctionExpression: function (id, params, defaults, body) {
return {
type: Syntax.FunctionExpression,
id: id,
params: params,
defaults: defaults,
body: body,
rest: null,
generator: false,
expression: false
};
},
createIdentifier: function (name) {
return {
type: Syntax.Identifier,
name: name
};
},
createIfStatement: function (test, consequent, alternate) {
return {
type: Syntax.IfStatement,
test: test,
consequent: consequent,
alternate: alternate
};
},
createLabeledStatement: function (label, body) {
return {
type: Syntax.LabeledStatement,
label: label,
body: body
};
},
createLiteral: function (token) {
return {
type: Syntax.Literal,
value: token.value,
raw: source.slice(token.range[0], token.range[1])
};
},
createMemberExpression: function (accessor, object, property) {
return {
type: Syntax.MemberExpression,
computed: accessor === '[',
object: object,
property: property
};
},
createNewExpression: function (callee, args) {
return {
type: Syntax.NewExpression,
callee: callee,
'arguments': args
};
},
createObjectExpression: function (properties) {
return {
type: Syntax.ObjectExpression,
properties: properties
};
},
createPostfixExpression: function (operator, argument) {
return {
type: Syntax.UpdateExpression,
operator: operator,
argument: argument,
prefix: false
};
},
createProgram: function (body) {
return {
type: Syntax.Program,
body: body
};
},
createProperty: function (kind, key, value) {
return {
type: Syntax.Property,
key: key,
value: value,
kind: kind
};
},
createReturnStatement: function (argument) {
return {
type: Syntax.ReturnStatement,
argument: argument
};
},
createSequenceExpression: function (expressions) {
return {
type: Syntax.SequenceExpression,
expressions: expressions
};
},
createSwitchCase: function (test, consequent) {
return {
type: Syntax.SwitchCase,
test: test,
consequent: consequent
};
},
createSwitchStatement: function (discriminant, cases) {
return {
type: Syntax.SwitchStatement,
discriminant: discriminant,
cases: cases
};
},
createThisExpression: function () {
return {
type: Syntax.ThisExpression
};
},
createThrowStatement: function (argument) {
return {
type: Syntax.ThrowStatement,
argument: argument
};
},
createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
return {
type: Syntax.TryStatement,
block: block,
guardedHandlers: guardedHandlers,
handlers: handlers,
finalizer: finalizer
};
},
createUnaryExpression: function (operator, argument) {
if (operator === '++' || operator === '--') {
return {
type: Syntax.UpdateExpression,
operator: operator,
argument: argument,
prefix: true
};
}
var res = {
type: Syntax.UnaryExpression,
operator: operator,
argument: argument
};
if (/^\w/.test(operator)) res.keyword = operator;
return res;
},
createVariableDeclaration: function (declarations, kind) {
return {
type: Syntax.VariableDeclaration,
declarations: declarations,
kind: kind
};
},
createVariableDeclarator: function (id, init) {
return {
type: Syntax.VariableDeclarator,
id: id,
init: init
};
},
createWhileStatement: function (test, body) {
return {
type: Syntax.WhileStatement,
test: test,
body: body
};
},
createWithStatement: function (object, body) {
return {
type: Syntax.WithStatement,
object: object,
body: body
};
}
};
// Return true if there is a line terminator before the next token.
function peekLineTerminator() {
var pos, line, start, found;
pos = index;
line = lineNumber;
start = lineStart;
skipComment();
found = lineNumber !== line;
index = pos;
lineNumber = line;
lineStart = start;
return found;
}
// Throw an exception
function throwError(token, messageFormat) {
var error,
args = Array.prototype.slice.call(arguments, 2),
msg = messageFormat.replace(
/%(\d)/g,
function (whole, index) {
assert(index < args.length, 'Message reference must be in range');
return args[index];
}
);
if (typeof token.lineNumber === 'number') {
error = new Error('Line ' + token.lineNumber + ': ' + msg);
error.index = token.range[0];
error.lineNumber = token.lineNumber;
error.column = token.range[0] - lineStart + 1;
} else {
error = new Error('Line ' + lineNumber + ': ' + msg);
error.index = index;
error.lineNumber = lineNumber;
error.column = index - lineStart + 1;
}
error.description = msg;
throw error;
}
function throwErrorTolerant() {
try {
throwError.apply(null, arguments);
} catch (e) {
if (extra.errors) {
extra.errors.push(e);
} else {
throw e;
}
}
}
// Throw an exception because of the token.
function throwUnexpected(token) {
if (token.type === Token.EOF) {
throwError(token, Messages.UnexpectedEOS);
}
if (token.type === Token.NumericLiteral) {
throwError(token, Messages.UnexpectedNumber);
}
if (token.type === Token.StringLiteral) {
throwError(token, Messages.UnexpectedString);
}
if (token.type === Token.Identifier) {
throwError(token, Messages.UnexpectedIdentifier);
}
if (token.type === Token.Keyword) {
if (isFutureReservedWord(token.value)) {
throwError(token, Messages.UnexpectedReserved);
} else if (strict && isStrictModeReservedWord(token.value)) {
throwErrorTolerant(token, Messages.StrictReservedWord);
return;
}
throwError(token, Messages.UnexpectedToken, token.value);
}
// BooleanLiteral, NullLiteral, or Punctuator.
throwError(token, Messages.UnexpectedToken, token.value);
}
// Expect the next token to match the specified punctuator.
// If not, an exception will be thrown.
function expect(value) {
var token = lex();
if (token.type !== Token.Punctuator || token.value !== value) {
throwUnexpected(token);
}
else return token;
}
// Expect the next token to match the specified keyword.
// If not, an exception will be thrown.
function expectKeyword(keyword) {
var token = lex();
if (token.type !== Token.Keyword || token.value !== keyword) {
throwUnexpected(token);
}
}
// Return true if the next token matches the specified punctuator.
function match(value) {
return lookahead.type === Token.Punctuator && lookahead.value === value;
}
// Return true if the next token matches the specified keyword
function matchKeyword(keyword) {
return lookahead.type === Token.Keyword && lookahead.value === keyword;
}
// Return true if the next token is an assignment operator
function matchAssign() {
var op;
if (lookahead.type !== Token.Punctuator) {
return false;
}
op = lookahead.value;
return op === '=' ||
op === '*=' ||
op === '/=' ||
op === '%=' ||
op === '+=' ||
op === '-=' ||
op === '<<=' ||
op === '>>=' ||
op === '>>>=' ||
op === '&=' ||
op === '^=' ||
op === '|=';
}
function consumeSemicolon() {
var line;
// Catch the very common case first: immediately a semicolon (char #59).
if (source.charCodeAt(index) === 59) {
lex();
return;
}
line = lineNumber;
skipComment();
if (lineNumber !== line) {
return;
}
if (match(';')) {
lex();
return;
}
if (lookahead.type !== Token.EOF && !match('}')) {
throwUnexpected(lookahead);
}
}
// Return true if provided expression is LeftHandSideExpression
function isLeftHandSide(expr) {
return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
}
// 11.1.4 Array Initialiser
function parseArrayInitialiser() {
var elements = [];
expect('[');
while (!match(']')) {
if (match(',')) {
lex();
elements.push(null);
} else {
elements.push(parseAssignmentExpression());
if (!match(']')) {
expect(',');
}
}
}
expect(']');
return delegate.createArrayExpression(elements);
}
// 11.1.5 Object Initialiser
function parsePropertyFunction(param, first) {
var previousStrict, body;
previousStrict = strict;
body = parseFunctionSourceElements();
if (first && strict && isRestrictedWord(param[0].name)) {
throwErrorTolerant(first, Messages.StrictParamName);
}
strict = previousStrict;
return delegate.createFunctionExpression(null, param, [], body);
}
function parseObjectPropertyKey() {
var token = lex();
// Note: This function is called only from parseObjectProperty(), where
// EOF and Punctuator tokens are already filtered out.
if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
if (strict && token.octal) {
throwErrorTolerant(token, Messages.StrictOctalLiteral);
}
return delegate.createLiteral(token);
}
return delegate.createIdentifier(token.value);
}
function parseObjectProperty() {
var token, key, id, value, param;
token = lookahead;
if (token.type === Token.Identifier) {
id = parseObjectPropertyKey();
// Property Assignment: Getter and Setter.
if (token.value === 'get' && !match(':')) {
key = parseObjectPropertyKey();
expect('(');
expect(')');
value = parsePropertyFunction([]);
return delegate.createProperty('get', key, value);
}
if (token.value === 'set' && !match(':')) {
key = parseObjectPropertyKey();
expect('(');
token = lookahead;
if (token.type !== Token.Identifier) {
throwUnexpected(lex());
}
param = [ parseVariableIdentifier() ];
expect(')');
value = parsePropertyFunction(param, token);
return delegate.createProperty('set', key, value);
}
expect(':');
value = parseAssignmentExpression();
return delegate.createProperty('init', id, value);
}
if (token.type === Token.EOF || token.type === Token.Punctuator) {
throwUnexpected(token);
} else {
key = parseObjectPropertyKey();
expect(':');
value = parseAssignmentExpression();
return delegate.createProperty('init', key, value);
}
}
function parseObjectInitialiser() {
var properties = [], property, name, key, kind, map = {}, toString = String;
expect('{');
while (!match('}')) {
property = parseObjectProperty();
if (property.key.type === Syntax.Identifier) {
name = property.key.name;
} else {
name = toString(property.key.value);
}
kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
key = '$' + name;
if (Object.prototype.hasOwnProperty.call(map, key)) {
if (map[key] === PropertyKind.Data) {
if (strict && kind === PropertyKind.Data) {
throwErrorTolerant({}, Messages.StrictDuplicateProperty);
} else if (kind !== PropertyKind.Data) {
throwErrorTolerant({}, Messages.AccessorDataProperty);
}
} else {
if (kind === PropertyKind.Data) {
throwErrorTolerant({}, Messages.AccessorDataProperty);
} else if (map[key] & kind) {
throwErrorTolerant({}, Messages.AccessorGetSet);
}
}
map[key] |= kind;
} else {
map[key] = kind;
}
properties.push(property);
if (!match('}')) {
expect(',');
}
}
expect('}');
return delegate.createObjectExpression(properties);
}
// 11.1.6 The Grouping Operator
function parseGroupExpression() {
var expr;
expect('(');
expr = parseExpression();
expect(')');
return expr;
}
// 11.1 Primary Expressions
function parsePrimaryExpression() {
var type, token;
type = lookahead.type;
if (type === Token.Identifier) {
return delegate.createIdentifier(lex().value);
}
if (type === Token.StringLiteral || type === Token.NumericLiteral) {
if (strict && lookahead.octal) {
throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
}
return delegate.createLiteral(lex());
}
if (type === Token.Keyword) {
if (matchKeyword('this')) {
lex();
return delegate.createThisExpression();
}
if (matchKeyword('function')) {
return parseFunctionExpression();
}
}
if (type === Token.BooleanLiteral) {
token = lex();
token.value = (token.value === 'true');
return delegate.createLiteral(token);
}
if (type === Token.NullLiteral) {
token = lex();
token.value = null;
return delegate.createLiteral(token);
}
if (match('[')) {
return parseArrayInitialiser();
}
if (match('{')) {
return parseObjectInitialiser();
}
if (match('(')) {
return parseGroupExpression();
}
if (match('/') || match('/=')) {
return delegate.createLiteral(scanRegExp());
}
return throwUnexpected(lex());
}
// 11.2 Left-Hand-Side Expressions
function parseArguments() {
var args = [];
expect('(');
if (!match(')')) {
while (index < length) {
args.push(parseAssignmentExpression());
if (match(')')) {
break;
}
expect(',');
}
}
expect(')');
return args;
}
function parseNonComputedProperty() {
var token = lex();
if (!isIdentifierName(token)) {
throwUnexpected(token);
}
return delegate.createIdentifier(token.value);
}
function parseNonComputedMember() {
expect('.');
return parseNonComputedProperty();
}
function parseComputedMember() {
var expr;
expect('[');
expr = parseExpression();
expect(']');
return expr;
}
function parseNewExpression() {
var callee, args;
expectKeyword('new');
callee = parseLeftHandSideExpression();
args = match('(') ? parseArguments() : [];
return delegate.createNewExpression(callee, args);
}
function parseLeftHandSideExpressionAllowCall() {
var expr, args, property;
expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
while (match('.') || match('[') || match('(')) {
if (match('(')) {
args = parseArguments();
expr = delegate.createCallExpression(expr, args);
} else if (match('[')) {
property = parseComputedMember();
expr = delegate.createMemberExpression('[', expr, property);
} else {
property = parseNonComputedMember();
expr = delegate.createMemberExpression('.', expr, property);
}
}
return expr;
}
function parseLeftHandSideExpression() {
var expr, property;
expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
while (match('.') || match('[')) {
if (match('[')) {
property = parseComputedMember();
expr = delegate.createMemberExpression('[', expr, property);
} else {
property = parseNonComputedMember();
expr = delegate.createMemberExpression('.', expr, property);
}
}
return expr;
}
// 11.3 Postfix Expressions
function parsePostfixExpression() {
var expr = parseLeftHandSideExpressionAllowCall(), token;
if (lookahead.type !== Token.Punctuator) {
return expr;
}
if ((match('++') || match('--')) && !peekLineTerminator()) {
// 11.3.1, 11.3.2
if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
throwErrorTolerant({}, Messages.StrictLHSPostfix);
}
if (!isLeftHandSide(expr)) {
throwError({}, Messages.InvalidLHSInAssignment);
}
token = lex();
expr = delegate.createPostfixExpression(token.value, expr);
}
return expr;
}
// 11.4 Unary Operators
function parseUnaryExpression() {
var token, expr;
if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
return parsePostfixExpression();
}
if (match('++') || match('--')) {
token = lex();
expr = parseUnaryExpression();
// 11.4.4, 11.4.5
if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
throwErrorTolerant({}, Messages.StrictLHSPrefix);
}
if (!isLeftHandSide(expr)) {
throwError({}, Messages.InvalidLHSInAssignment);
}
return delegate.createUnaryExpression(token.value, expr);
}
if (match('+') || match('-') || match('~') || match('!')) {
token = lex();
expr = parseUnaryExpression();
return delegate.createUnaryExpression(token.value, expr);
}
if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
token = lex();
expr = parseUnaryExpression();
expr = delegate.createUnaryExpression(token.value, expr);
if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
throwErrorTolerant({}, Messages.StrictDelete);
}
return expr;
}
if (extra.isKeyword && lookahead.type === 4 && extra.isKeyword(lookahead.value) === true) {
token = lex();
expr = parseUnaryExpression();
expr = delegate.createUnaryExpression(token.value, expr);
return expr;
}
return parsePostfixExpression();
}
function binaryPrecedence(token, allowIn) {
var prec = 0;
if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
return 0;
}
switch (token.value) {
case '||':
prec = 1;
break;
case '&&':
prec = 2;
break;
case '|':
prec = 3;
break;
case '^':
prec = 4;
break;
case '&':
prec = 5;
break;
case '==':
case '!=':
case '===':
case '!==':
prec = 6;
break;
case '<':
case '>':
case '<=':
case '>=':
case 'instanceof':
prec = 7;
break;
case 'in':
prec = allowIn ? 7 : 0;
break;
case '<<':
case '>>':
case '>>>':
prec = 8;
break;
case '+':
case '-':
prec = 9;
break;
case '*':
case '/':
case '%':
prec = 11;
break;
default:
break;
}
return prec;
}
// 11.5 Multiplicative Operators
// 11.6 Additive Operators
// 11.7 Bitwise Shift Operators
// 11.8 Relational Operators
// 11.9 Equality Operators
// 11.10 Binary Bitwise Operators
// 11.11 Binary Logical Operators
function parseBinaryExpression() {
var expr, token, prec, previousAllowIn, stack, right, operator, left, i;
previousAllowIn = state.allowIn;
state.allowIn = true;
expr = parseUnaryExpression();
token = lookahead;
prec = binaryPrecedence(token, previousAllowIn);
if (prec === 0) {
return expr;
}
token.prec = prec;
lex();
stack = [expr, token, parseUnaryExpression()];
while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {
// Reduce: 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();
stack.push(delegate.createBinaryExpression(operator, left, right));
}
// Shift.
token = lex();
token.prec = prec;
stack.push(token);
stack.push(parseUnaryExpression());
}
state.allowIn = previousAllowIn;
// Final reduce to clean-up the stack.
i = stack.length - 1;
expr = stack[i];
while (i > 1) {
expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
i -= 2;
}
return expr;
}
// 11.12 Conditional Operator
function parseConditionalExpression() {
var expr, previousAllowIn, consequent, alternate;
expr = parseBinaryExpression();
if (match('?')) {
lex();
previousAllowIn = state.allowIn;
state.allowIn = true;
consequent = parseAssignmentExpression();
state.allowIn = previousAllowIn;
expect(':');
alternate = parseAssignmentExpression();
expr = delegate.createConditionalExpression(expr, consequent, alternate);
}
return expr;
}
// 11.13 Assignment Operators
function parseAssignmentExpression() {
var token, left, right;
token = lookahead;
left = parseConditionalExpression();
if (matchAssign()) {
// LeftHandSideExpression
if (!isLeftHandSide(left)) {
throwError({}, Messages.InvalidLHSInAssignment);
}
// 11.13.1
if (strict && left.type === Syntax.Identifier && isRestrictedWord(left.name)) {
throwErrorTolerant(token, Messages.StrictLHSAssignment);
}
token = lex();
right = parseAssignmentExpression();
return delegate.createAssignmentExpression(token.value, left, right);
}
return left;
}
// 11.14 Comma Operator
function parseExpression() {
var expr = parseAssignmentExpression();
if (match(',')) {
expr = delegate.createSequenceExpression([ expr ]);
while (index < length) {
if (!match(',')) {
break;
}
lex();
expr.expressions.push(parseAssignmentExpression());
}
}
return expr;
}
// 12.1 Block
function parseStatementList() {
var list = [],
statement;
while (index < length) {
if (match('}')) {
break;
}
statement = parseSourceElement();
if (typeof statement === 'undefined') {
break;
}
list.push(statement);
}
return list;
}
function parseBlock() {
var block;
var t = expect('{');
block = parseStatementList();
expect('}');
var db = delegate.createBlockStatement(block);
if (t.keyword) db.keyword = t.keyword;
return db;
}
// 12.2 Variable Statement
function parseVariableIdentifier() {
var token = lex();
if (token.type !== Token.Identifier) {
throwUnexpected(token);
}
return delegate.createIdentifier(token.value);
}
function parseVariableDeclaration(kind) {
var id = parseVariableIdentifier(),
init = null;
// 12.2.1
if (strict && isRestrictedWord(id.name)) {
throwErrorTolerant({}, Messages.StrictVarName);
}
if (kind === 'const') {
expect('=');
init = parseAssignmentExpression();
} else if (match('=')) {
lex();
init = parseAssignmentExpression();
}
return delegate.createVariableDeclarator(id, init);
}
function parseVariableDeclarationList(kind) {
var list = [];
do {
list.push(parseVariableDeclaration(kind));
if (!match(',')) {
break;
}
lex();
} while (index < length);
return list;
}
function parseVariableStatement() {
var declarations;
expectKeyword('var');
declarations = parseVariableDeclarationList();
consumeSemicolon();
return delegate.createVariableDeclaration(declarations, 'var');
}
// kind may be `const` or `let`
// Both are experimental and not in the specification yet.
// see http://wiki.ecmascript.org/doku.php?id=harmony:const
// and http://wiki.ecmascript.org/doku.php?id=harmony:let
function parseConstLetDeclaration(kind) {
var declarations;
expectKeyword(kind);
declarations = parseVariableDeclarationList(kind);
consumeSemicolon();
return delegate.createVariableDeclaration(declarations, kind);
}
// 12.3 Empty Statement
function parseEmptyStatement() {
expect(';');
return delegate.createEmptyStatement();
}
// 12.4 Expression Statement
function parseExpressionStatement() {
var expr = parseExpression();
consumeSemicolon();
return delegate.createExpressionStatement(expr);
}
// 12.5 If statement
function parseIfStatement() {
var test, consequent, alternate;
expectKeyword('if');
expect('(');
test = parseExpression();
expect(')');
consequent = parseStatement();
if (matchKeyword('else')) {
lex();
alternate = parseStatement();
} else {
alternate = null;
}
return delegate.createIfStatement(test, consequent, alternate);
}
// 12.6 Iteration Statements
function parseDoWhileStatement() {
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 delegate.createDoWhileStatement(body, test);
}
function parseWhileStatement() {
var test, body, oldInIteration;
expectKeyword('while');
expect('(');
test = parseExpression();
expect(')');
oldInIteration = state.inIteration;
state.inIteration = true;
body = parseStatement();
state.inIteration = oldInIteration;
return delegate.createWhileStatement(test, body);
}
function parseForVariableDeclaration() {
var token = lex(),
declarations = parseVariableDeclarationList();
return delegate.createVariableDeclaration(declarations, token.value);
}
function parseForStatement() {
var init, test, update, left, right, body, oldInIteration;
init = test = update = null;
expectKeyword('for');
expect('(');
if (match(';')) {
lex();
} else {
if (matchKeyword('var') || matchKeyword('let')) {
state.allowIn = false;
init = parseForVariableDeclaration();
state.allowIn = true;
if (init.declarations.length === 1 && matchKeyword('in')) {
lex();
left = init;
right = parseExpression();
init = null;
}
} else {
state.allowIn = false;
init = parseExpression();
state.allowIn = true;
if (matchKeyword('in')) {
// LeftHandSideExpression
if (!isLeftHandSide(init)) {
throwError({}, Messages.InvalidLHSInForIn);
}
lex();
left = init;
right = parseExpression();
init = null;
}
}
if (typeof left === 'undefined') {
expect(';');
}
}
if (typeof left === 'undefined') {
if (!match(';')) {
test = parseExpression();
}
expect(';');
if (!match(')')) {
update = parseExpression();
}
}
expect(')');
oldInIteration = state.inIteration;
state.inIteration = true;
body = parseStatement();
state.inIteration = oldInIteration;
return (typeof left === 'undefined') ?
delegate.createForStatement(init, test, update, body) :
delegate.createForInStatement(left, right, body);
}
// 12.7 The continue statement
function parseContinueStatement() {
var label = null, key;
expectKeyword('continue');
// Optimize the most common form: 'continue;'.
if (source.charCodeAt(index) === 59) {
lex();
if (!state.inIteration) {
throwError({}, Messages.IllegalContinue);
}
return delegate.createContinueStatement(null);
}
if (peekLineTerminator()) {
if (!state.inIteration) {
throwError({}, Messages.IllegalContinue);
}
return delegate.createContinueStatement(null);
}
if (lookahead.type === Token.Identifier) {
label = parseVariableIdentifier();
key = '$' + label.name;
if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
throwError({}, Messages.UnknownLabel, label.name);
}
}
consumeSemicolon();
if (label === null && !state.inIteration) {
throwError({}, Messages.IllegalContinue);
}
return delegate.createContinueStatement(label);
}
// 12.8 The break statement
function parseBreakStatement() {
var label = null, key;
expectKeyword('break');
// Catch the very common case first: immediately a semicolon (char #59).
if (source.charCodeAt(index) === 59) {
lex();
if (!(state.inIteration || state.inSwitch)) {
throwError({}, Messages.IllegalBreak);
}
return delegate.createBreakStatement(null);
}
if (peekLineTerminator()) {
if (!(state.inIteration || state.inSwitch)) {
throwError({}, Messages.IllegalBreak);
}
return delegate.createBreakStatement(null);
}
if (lookahead.type === Token.Identifier) {
label = parseVariableIdentifier();
key = '$' + label.name;
if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
throwError({}, Messages.UnknownLabel, label.name);
}
}
consumeSemicolon();
if (label === null && !(state.inIteration || state.inSwitch)) {
throwError({}, Messages.IllegalBreak);
}
return delegate.createBreakStatement(label);
}
// 12.9 The return statement
function parseReturnStatement() {
var argument = null;
expectKeyword('return');
if (!state.inFunctionBody) {
throwErrorTolerant({}, Messages.IllegalReturn);
}
// 'return' followed by a space and an identifier is very common.
if (source.charCodeAt(index) === 32) {
if (isIdentifierStart(source.charCodeAt(index + 1))) {
argument = parseExpression();
consumeSemicolon();
return delegate.createReturnStatement(argument);
}
}
if (peekLineTerminator()) {
return delegate.createReturnStatement(null);
}
if (!match(';')) {
if (!match('}') && lookahead.type !== Token.EOF) {
argument = parseExpression();
}
}
consumeSemicolon();
return delegate.createReturnStatement(argument);
}
// 12.10 The with statement
function parseWithStatement() {
var object, body;
if (strict) {
throwErrorTolerant({}, Messages.StrictModeWith);
}
expectKeyword('with');
expect('(');
object = parseExpression();
expect(')');
body = parseStatement();
return delegate.createWithStatement(object, body);
}
// 12.10 The swith statement
function parseSwitchCase() {
var test,
consequent = [],
statement;
if (matchKeyword('default')) {
lex();
test = null;
} else {
expectKeyword('case');
test = parseExpression();
}
expect(':');
while (index < length) {
if (match('}') || matchKeyword('default') || matchKeyword('case')) {
break;
}
statement = parseStatement();
consequent.push(statement);
}
return delegate.createSwitchCase(test, consequent);
}
function parseSwitchStatement() {
var discriminant, cases, clause, oldInSwitch, defaultFound;
expectKeyword('switch');
expect('(');
discriminant = parseExpression();
expect(')');
expect('{');
if (match('}')) {
lex();
return delegate.createSwitchStatement(discriminant);
}
cases = [];
oldInSwitch = state.inSwitch;
state.inSwitch = true;
defaultFound = false;
while (index < length) {
if (match('}')) {
break;
}
clause = parseSwitchCase();
if (clause.test === null) {
if (defaultFound) {
throwError({}, Messages.MultipleDefaultsInSwitch);
}
defaultFound = true;
}
cases.push(clause);
}
state.inSwitch = oldInSwitch;
expect('}');
return delegate.createSwitchStatement(discriminant, cases);
}
// 12.13 The throw statement
function parseThrowStatement() {
var argument;
expectKeyword('throw');
if (peekLineTerminator()) {
throwError({}, Messages.NewlineAfterThrow);
}
argument = parseExpression();
consumeSemicolon();
return delegate.createThrowStatement(argument);
}
// 12.14 The try statement
function parseCatchClause() {
var param, body;
expectKeyword('catch');
expect('(');
if (match(')')) {
throwUnexpected(lookahead);
}
param = parseExpression();
// 12.14.1
if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
throwErrorTolerant({}, Messages.StrictCatchVariable);
}
expect(')');
body = parseBlock();
return delegate.createCatchClause(param, body);
}
function parseTryStatement() {
var block, handlers = [], finalizer = null;
expectKeyword('try');
block = parseBlock();
if (matchKeyword('catch')) {
handlers.push(parseCatchClause());
}
if (matchKeyword('finally')) {
lex();
finalizer = parseBlock();
}
if (handlers.length === 0 && !finalizer) {
throwError({}, Messages.NoCatchOrFinally);
}
return delegate.createTryStatement(block, [], handlers, finalizer);
}
// 12.15 The debugger statement
function parseDebuggerStatement() {
expectKeyword('debugger');
consumeSemicolon();
return delegate.createDebuggerStatement();
}
// 12 Statements
function parseStatement() {
var type = lookahead.type,
expr,
labeledBody,
key;
if (type === Token.EOF) {
throwUnexpected(lookahead);
}
if (type === Token.Punctuator) {
switch (lookahead.value) {
case ';':
return parseEmptyStatement();
case '{':
return parseBlock();
case '(':
return parseExpressionStatement();
default:
break;
}
}
if (type === Token.Keyword) {
switch (lookahead.value) {
case 'break':
return parseBreakStatement();
case 'continue':
return parseContinueStatement();
case 'debugger':
return parseDebuggerStatement();
case 'do':
return parseDoWhileStatement();
case 'for':
return parseForStatement();
case 'function':
return parseFunctionDeclaration();
case 'if':
return parseIfStatement();
case 'return':
return parseReturnStatement();
case 'switch':
return parseSwitchStatement();
case 'throw':
return parseThrowStatement();
case 'try':
return parseTryStatement();
case 'var':
return parseVariableStatement();
case 'while':
return parseWhileStatement();
case 'with':
return parseWithStatement();
default:
break;
}
}
expr = parseExpression();
// 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 delegate.createLabeledStatement(expr, labeledBody);
}
consumeSemicolon();
return delegate.createExpressionStatement(expr);
}
// 13 Function Definition
function parseFunctionSourceElements() {
var sourceElement, sourceElements = [], token, directive, firstRestricted,
oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody;
expect('{');
while (index < length) {
if (lookahead.type !== Token.StringLiteral) {
break;
}
token = lookahead;
sourceElement = parseSourceElement();
sourceElements.push(sourceElement);
if (sourceElement.expression.type !== Syntax.Literal) {
// this is not directive
break;
}
directive = source.slice(token.range[0] + 1, token.range[1] - 1);
if (directive === 'use strict') {
strict = true;
if (firstRestricted) {
throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
}
} else {
if (!firstRestricted && token.octal) {
firstRestricted = token;
}
}
}
oldLabelSet = state.labelSet;
oldInIteration = state.inIteration;
oldInSwitch = state.inSwitch;
oldInFunctionBody = state.inFunctionBody;
state.labelSet = {};
state.inIteration = false;
state.inSwitch = false;
state.inFunctionBody = true;
while (index < length) {
if (match('}')) {
break;
}
sourceElement = parseSourceElement();
if (typeof sourceElement === 'undefined') {
break;
}
sourceElements.push(sourceElement);
}
expect('}');
state.labelSet = oldLabelSet;
state.inIteration = oldInIteration;
state.inSwitch = oldInSwitch;
state.inFunctionBody = oldInFunctionBody;
return delegate.createBlockStatement(sourceElements);
}
function parseParams(firstRestricted) {
var param, params = [], token, stricted, paramSet, key, message;
expect('(');
if (!match(')')) {
paramSet = {};
while (index < length) {
token = lookahead;
param = parseVariableIdentifier();
key = '$' + token.value;
if (strict) {
if (isRestrictedWord(token.value)) {
stricted = token;
message = Messages.StrictParamName;
}
if (Object.prototype.hasOwnProperty.call(paramSet, key)) {
stricted = token;
message = Messages.StrictParamDupe;
}
} else if (!firstRestricted) {
if (isRestrictedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictParamName;
} else if (isStrictModeReservedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictReservedWord;
} else if (Object.prototype.hasOwnProperty.call(paramSet, key)) {
firstRestricted = token;
message = Messages.StrictParamDupe;
}
}
params.push(param);
paramSet[key] = true;
if (match(')')) {
break;
}
expect(',');
}
}
expect(')');
return {
params: params,
stricted: stricted,
firstRestricted: firstRestricted,
message: message
};
}
function parseFunctionDeclaration() {
var id, params = [], body, token, stricted, tmp, firstRestricted, message, previousStrict;
expectKeyword('function');
token = lookahead;
id = parseVariableIdentifier();
if (strict) {
if (isRestrictedWord(token.value)) {
throwErrorTolerant(token, Messages.StrictFunctionName);
}
} else {
if (isRestrictedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictFunctionName;
} else if (isStrictModeReservedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictReservedWord;
}
}
tmp = parseParams(firstRestricted);
params = tmp.params;
stricted = tmp.stricted;
firstRestricted = tmp.firstRestricted;
if (tmp.message) {
message = tmp.message;
}
previousStrict = strict;
body = parseFunctionSourceElements();
if (strict && firstRestricted) {
throwError(firstRestricted, message);
}
if (strict && stricted) {
throwErrorTolerant(stricted, message);
}
strict = previousStrict;
return delegate.createFunctionDeclaration(id, params, [], body);
}
function parseFunctionExpression() {
var token, id = null, stricted, firstRestricted, message, tmp, params = [], body, previousStrict;
expectKeyword('function');
if (!match('(')) {
token = lookahead;
id = parseVariableIdentifier();
if (strict) {
if (isRestrictedWord(token.value)) {
throwErrorTolerant(token, Messages.StrictFunctionName);
}
} else {
if (isRestrictedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictFunctionName;
} else if (isStrictModeReservedWord(token.value)) {
firstRestricted = token;
message = Messages.StrictReservedWord;
}
}
}
tmp = parseParams(firstRestricted);
params = tmp.params;
stricted = tmp.stricted;
firstRestricted = tmp.firstRestricted;
if (tmp.message) {
message = tmp.message;
}
previousStrict = strict;
body = parseFunctionSourceElements();
if (strict && firstRestricted) {
throwError(firstRestricted, message);
}
if (strict && stricted) {
throwErrorTolerant(stricted, message);
}
strict = previousStrict;
return delegate.createFunctionExpression(id, params, [], body);
}
// 14 Program
function parseSourceElement() {
if (lookahead.type === Token.Keyword) {
switch (lookahead.value) {
case 'const':
case 'let':
return parseConstLetDeclaration(lookahead.value);
case 'function':
return parseFunctionDeclaration();
default:
return parseStatement();
}
}
if (lookahead.type !== Token.EOF) {
return parseStatement();
}
}
function parseSourceElements() {
var sourceElement, sourceElements = [], token, directive, firstRestricted;
while (index < length) {
token = lookahead;
if (token.type !== Token.StringLiteral) {
break;
}
sourceElement = parseSourceElement();
sourceElements.push(sourceElement);
if (sourceElement.expression.type !== Syntax.Literal) {
// this is not directive
break;
}
directive = source.slice(token.range[0] + 1, token.range[1] - 1);
if (directive === 'use strict') {
strict = true;
if (firstRestricted) {
throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
}
} else {
if (!firstRestricted && token.octal) {
firstRestricted = token;
}
}
}
while (index < length) {
sourceElement = parseSourceElement();
if (typeof sourceElement === 'undefined') {
break;
}
sourceElements.push(sourceElement);
}
return sourceElements;
}
function parseProgram() {
var body;
strict = false;
peek();
body = parseSourceElements();
return delegate.createProgram(body);
}
// The following functions are needed only when the option to preserve
// the comments is active.
function addComment(type, value, start, end, loc) {
assert(typeof start === 'number', 'Comment must have valid position');
// Because the way the actual token is scanned, often the comments
// (if any) are skipped twice during the lexical analysis.
// Thus, we need to skip adding a comment if the comment array already
// handled it.
if (extra.comments.length > 0) {
if (extra.comments[extra.comments.length - 1].range[1] > start) {
return;
}
}
extra.comments.push({
type: type,
value: value,
range: [start, end],
loc: loc
});
}
function scanComment() {
var comment, ch, loc, start, blockComment, lineComment;
comment = '';
blockComment = false;
lineComment = false;
while (index < length) {
ch = source[index];
if (lineComment) {
ch = source[index++];
if (isLineTerminator(ch.charCodeAt(0))) {
loc.end = {
line: lineNumber,
column: index - lineStart - 1
};
lineComment = false;
addComment('Line', comment, start, index - 1, loc);
if (ch === '\r' && source[index] === '\n') {
++index;
}
++lineNumber;
lineStart = index;
comment = '';
} else if (index >= length) {
lineComment = false;
comment += ch;
loc.end = {
line: lineNumber,
column: length - lineStart
};
addComment('Line', comment, start, length, loc);
} else {
comment += ch;
}
} else if (blockComment) {
if (isLineTerminator(ch.charCodeAt(0))) {
if (ch === '\r' && source[index + 1] === '\n') {
++index;
comment += '\r\n';
} else {
comment += ch;
}
++lineNumber;
++index;
lineStart = index;
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
} else {
ch = source[index++];
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
comment += ch;
if (ch === '*') {
ch = source[index];
if (ch === '/') {
comment = comment.substr(0, comment.length - 1);
blockComment = false;
++index;
loc.end = {
line: lineNumber,
column: index - lineStart
};
addComment('Block', comment, start, index, loc);
comment = '';
}
}
}
} else if (ch === '/') {
ch = source[index + 1];
if (ch === '/') {
loc = {
start: {
line: lineNumber,
column: index - lineStart
}
};
start = index;
index += 2;
lineComment = true;
if (index >= length) {
loc.end = {
line: lineNumber,
column: index - lineStart
};
lineComment = false;
addComment('Line', comment, start, index, loc);
}
} else if (ch === '*') {
start = index;
index += 2;
blockComment = true;
loc = {
start: {
line: lineNumber,
column: index - lineStart - 2
}
};
if (index >= length) {
throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
}
} else {
break;
}
} else if (isWhiteSpace(ch.charCodeAt(0))) {
++index;
} else if (isLineTerminator(ch.charCodeAt(0))) {
++index;
if (ch === '\r' && source[index] === '\n') {
++index;
}
++lineNumber;
lineStart = index;
} else {
break;
}
}
}
function filterCommentLocation() {
var i, entry, comment, comments = [];
for (i = 0; i < extra.comments.length; ++i) {
entry = extra.comments[i];
comment = {
type: entry.type,
value: entry.value
};
if (extra.range) {
comment.range = entry.range;
}
if (extra.loc) {
comment.loc = entry.loc;
}
comments.push(comment);
}
extra.comments = comments;
}
function collectToken() {
var start, loc, token, range, value;
skipComment();
start = index;
loc = {
start: {
line: lineNumber,
column: index - lineStart
}
};
token = extra.advance();
loc.end = {
line: lineNumber,
column: index - lineStart
};
if (token.type !== Token.EOF) {
range = [token.range[0], token.range[1]];
value = source.slice(token.range[0], token.range[1]);
extra.tokens.push({
type: TokenName[token.type],
value: value,
range: range,
loc: loc
});
}
return token;
}
function collectRegex() {
var pos, loc, regex, token;
skipComment();
pos = index;
loc = {
start: {
line: lineNumber,
column: index - lineStart
}
};
regex = extra.scanRegExp();
loc.end = {
line: lineNumber,
column: index - lineStart
};
// Pop the previous token, which is likely '/' or '/='
if (extra.tokens.length > 0) {
token = extra.tokens[extra.tokens.length - 1];
if (token.range[0] === pos && token.type === 'Punctuator') {
if (token.value === '/' || token.value === '/=') {
extra.tokens.pop();
}
}
}
extra.tokens.push({
type: 'RegularExpression',
value: regex.literal,
range: [pos, index],
loc: loc
});
return regex;
}
function filterTokenLocation() {
var i, entry, token, tokens = [];
for (i = 0; i < extra.tokens.length; ++i) {
entry = extra.tokens[i];
token = {
type: entry.type,
value: entry.value
};
if (extra.range) {
token.range = entry.range;
}
if (extra.loc) {
token.loc = entry.loc;
}
tokens.push(token);
}
extra.tokens = tokens;
}
function createLocationMarker() {
var marker = {};
marker.range = [index, index];
marker.loc = {
start: {
line: lineNumber,
column: index - lineStart
},
end: {
line: lineNumber,
column: index - lineStart
}
};
marker.end = function () {
this.range[1] = index;
this.loc.end.line = lineNumber;
this.loc.end.column = index - lineStart;
};
marker.applyGroup = function (node) {
if (extra.range) {
node.groupRange = [this.range[0], this.range[1]];
}
if (extra.loc) {
node.groupLoc = {
start: {
line: this.loc.start.line,
column: this.loc.start.column
},
end: {
line: this.loc.end.line,
column: this.loc.end.column
}
};
node = delegate.postProcess(node);
}
};
marker.apply = function (node) {
if (extra.range) {
node.range = [this.range[0], this.range[1]];
}
if (extra.loc) {
node.loc = {
start: {
line: this.loc.start.line,
column: this.loc.start.column
},
end: {
line: this.loc.end.line,
column: this.loc.end.column
}
};
node = delegate.postProcess(node);
}
};
return marker;
}
function trackGroupExpression() {
var marker, expr;
skipComment();
marker = createLocationMarker();
expect('(');
expr = parseExpression();
expect(')');
marker.end();
marker.applyGroup(expr);
return expr;
}
function trackLeftHandSideExpression() {
var marker, expr, property;
skipComment();
marker = createLocationMarker();
expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
while (match('.') || match('[')) {
if (match('[')) {
property = parseComputedMember();
expr = delegate.createMemberExpression('[', expr, property);
marker.end();
marker.apply(expr);
} else {
property = parseNonComputedMember();
expr = delegate.createMemberExpression('.', expr, property);
marker.end();
marker.apply(expr);
}
}
return expr;
}
function trackLeftHandSideExpressionAllowCall() {
var marker, expr, args, property;
skipComment();
marker = createLocationMarker();
expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
while (match('.') || match('[') || match('(')) {
if (match('(')) {
args = parseArguments();
expr = delegate.createCallExpression(expr, args);
marker.end();
marker.apply(expr);
} else if (match('[')) {
property = parseComputedMember();
expr = delegate.createMemberExpression('[', expr, property);
marker.end();
marker.apply(expr);
} else {
property = parseNonComputedMember();
expr = delegate.createMemberExpression('.', expr, property);
marker.end();
marker.apply(expr);
}
}
return expr;
}
function filterGroup(node) {
var n, i, entry;
n = (Object.prototype.toString.apply(node) === '[object Array]') ? [] : {};
for (i in node) {
if (node.hasOwnProperty(i) && i !== 'groupRange' && i !== 'groupLoc') {
entry = node[i];
if (entry === null || typeof entry !== 'object' || entry instanceof RegExp) {
n[i] = entry;
} else {
n[i] = filterGroup(entry);
}
}
}
return n;
}
function wrapTrackingFunction(range, loc) {
return function (parseFunction) {
function isBinary(node) {
return node.type === Syntax.LogicalExpression ||
node.type === Syntax.BinaryExpression;
}
function visit(node) {
var start, end;
if (isBinary(node.left)) {
visit(node.left);
}
if (isBinary(node.right)) {
visit(node.right);
}
if (range) {
if (node.left.groupRange || node.right.groupRange) {
start = node.left.groupRange ? node.left.groupRange[0] : node.left.range[0];
end = node.right.groupRange ? node.right.groupRange[1] : node.right.range[1];
node.range = [start, end];
} else if (typeof node.range === 'undefined') {
start = node.left.range[0];
end = node.right.range[1];
node.range = [start, end];
}
}
if (loc) {
if (node.left.groupLoc || node.right.groupLoc) {
start = node.left.groupLoc ? node.left.groupLoc.start : node.left.loc.start;
end = node.right.groupLoc ? node.right.groupLoc.end : node.right.loc.end;
node.loc = {
start: start,
end: end
};
node = delegate.postProcess(node);
} else if (typeof node.loc === 'undefined') {
node.loc = {
start: node.left.loc.start,
end: node.right.loc.end
};
node = delegate.postProcess(node);
}
}
}
return function () {
var marker, node;
skipComment();
marker = createLocationMarker();
node = parseFunction.apply(null, arguments);
marker.end();
if (range && typeof node.range === 'undefined') {
marker.apply(node);
}
if (loc && typeof node.loc === 'undefined') {
marker.apply(node);
}
if (isBinary(node)) {
visit(node);
}
return node;
};
};
}
function patch() {
var wrapTracking;
if (extra.comments) {
extra.skipComment = skipComment;
skipComment = scanComment;
}
if (extra.range || extra.loc) {
extra.parseGroupExpression = parseGroupExpression;
extra.parseLeftHandSideExpression = parseLeftHandSideExpression;
extra.parseLeftHandSideExpressionAllowCall = parseLeftHandSideExpressionAllowCall;
parseGroupExpression = trackGroupExpression;
parseLeftHandSideExpression = trackLeftHandSideExpression;
parseLeftHandSideExpressionAllowCall = trackLeftHandSideExpressionAllowCall;
wrapTracking = wrapTrackingFunction(extra.range, extra.loc);
extra.parseAssignmentExpression = parseAssignmentExpression;
extra.parseBinaryExpression = parseBinaryExpression;
extra.parseBlock = parseBlock;
extra.parseFunctionSourceElements = parseFunctionSourceElements;
extra.parseCatchClause = parseCatchClause;
extra.parseComputedMember = parseComputedMember;
extra.parseConditionalExpression = parseConditionalExpression;
extra.parseConstLetDeclaration = parseConstLetDeclaration;
extra.parseExpression = parseExpression;
extra.parseForVariableDeclaration = parseForVariableDeclaration;
extra.parseFunctionDeclaration = parseFunctionDeclaration;
extra.parseFunctionExpression = parseFunctionExpression;
extra.parseNewExpression = parseNewExpression;
extra.parseNonComputedProperty = parseNonComputedProperty;
extra.parseObjectProperty = parseObjectProperty;
extra.parseObjectPropertyKey = parseObjectPropertyKey;
extra.parsePostfixExpression = parsePostfixExpression;
extra.parsePrimaryExpression = parsePrimaryExpression;
extra.parseProgram = parseProgram;
extra.parsePropertyFunction = parsePropertyFunction;
extra.parseStatement = parseStatement;
extra.parseSwitchCase = parseSwitchCase;
extra.parseUnaryExpression = parseUnaryExpression;
extra.parseVariableDeclaration = parseVariableDeclaration;
extra.parseVariableIdentifier = parseVariableIdentifier;
parseAssignmentExpression = wrapTracking(extra.parseAssignmentExpression);
parseBinaryExpression = wrapTracking(extra.parseBinaryExpression);
parseBlock = wrapTracking(extra.parseBlock);
parseFunctionSourceElements = wrapTracking(extra.parseFunctionSourceElements);
parseCatchClause = wrapTracking(extra.parseCatchClause);
parseComputedMember = wrapTracking(extra.parseComputedMember);
parseConditionalExpression = wrapTracking(extra.parseConditionalExpression);
parseConstLetDeclaration = wrapTracking(extra.parseConstLetDeclaration);
parseExpression = wrapTracking(extra.parseExpression);
parseForVariableDeclaration = wrapTracking(extra.parseForVariableDeclaration);
parseFunctionDeclaration = wrapTracking(extra.parseFunctionDeclaration);
parseFunctionExpression = wrapTracking(extra.parseFunctionExpression);
parseLeftHandSideExpression = wrapTracking(parseLeftHandSideExpression);
parseNewExpression = wrapTracking(extra.parseNewExpression);
parseNonComputedProperty = wrapTracking(extra.parseNonComputedProperty);
parseObjectProperty = wrapTracking(extra.parseObjectProperty);
parseObjectPropertyKey = wrapTracking(extra.parseObjectPropertyKey);
parsePostfixExpression = wrapTracking(extra.parsePostfixExpression);
parsePrimaryExpression = wrapTracking(extra.parsePrimaryExpression);
parseProgram = wrapTracking(extra.parseProgram);
parsePropertyFunction = wrapTracking(extra.parsePropertyFunction);
parseStatement = wrapTracking(extra.parseStatement);
parseSwitchCase = wrapTracking(extra.parseSwitchCase);
parseUnaryExpression = wrapTracking(extra.parseUnaryExpression);
parseVariableDeclaration = wrapTracking(extra.parseVariableDeclaration);
parseVariableIdentifier = wrapTracking(extra.parseVariableIdentifier);
}
if (typeof extra.tokens !== 'undefined') {
extra.advance = advance;
extra.scanRegExp = scanRegExp;
advance = collectToken;
scanRegExp = collectRegex;
}
}
function unpatch() {
if (typeof extra.skipComment === 'function') {
skipComment = extra.skipComment;
}
if (extra.range || extra.loc) {
parseAssignmentExpression = extra.parseAssignmentExpression;
parseBinaryExpression = extra.parseBinaryExpression;
parseBlock = extra.parseBlock;
parseFunctionSourceElements = extra.parseFunctionSourceElements;
parseCatchClause = extra.parseCatchClause;
parseComputedMember = extra.parseComputedMember;
parseConditionalExpression = extra.parseConditionalExpression;
parseConstLetDeclaration = extra.parseConstLetDeclaration;
parseExpression = extra.parseExpression;
parseForVariableDeclaration = extra.parseForVariableDeclaration;
parseFunctionDeclaration = extra.parseFunctionDeclaration;
parseFunctionExpression = extra.parseFunctionExpression;
parseGroupExpression = extra.parseGroupExpression;
parseLeftHandSideExpression = extra.parseLeftHandSideExpression;
parseLeftHandSideExpressionAllowCall = extra.parseLeftHandSideExpressionAllowCall;
parseNewExpression = extra.parseNewExpression;
parseNonComputedProperty = extra.parseNonComputedProperty;
parseObjectProperty = extra.parseObjectProperty;
parseObjectPropertyKey = extra.parseObjectPropertyKey;
parsePrimaryExpression = extra.parsePrimaryExpression;
parsePostfixExpression = extra.parsePostfixExpression;
parseProgram = extra.parseProgram;
parsePropertyFunction = extra.parsePropertyFunction;
parseStatement = extra.parseStatement;
parseSwitchCase = extra.parseSwitchCase;
parseUnaryExpression = extra.parseUnaryExpression;
parseVariableDeclaration = extra.parseVariableDeclaration;
parseVariableIdentifier = extra.parseVariableIdentifier;
}
if (typeof extra.scanRegExp === 'function') {
advance = extra.advance;
scanRegExp = extra.scanRegExp;
}
}
// This is used to modify the delegate.
function extend(object, properties) {
var entry, result = {};
for (entry in object) {
if (object.hasOwnProperty(entry)) {
result[entry] = object[entry];
}
}
for (entry in properties) {
if (properties.hasOwnProperty(entry)) {
result[entry] = properties[entry];
}
}
return result;
}
function parse(code, options) {
var program, toString;
toString = String;
if (typeof code !== 'string' && !(code instanceof String)) {
code = toString(code);
}
delegate = SyntaxTreeDelegate;
source = code;
index = 0;
lineNumber = (source.length > 0) ? 1 : 0;
lineStart = 0;
length = source.length;
lookahead = null;
state = {
allowIn: true,
labelSet: {},
inFunctionBody: false,
inIteration: false,
inSwitch: false
};
extra = {};
if (typeof options !== 'undefined') {
extra.range = (typeof options.range === 'boolean') && options.range;
extra.loc = (typeof options.loc === 'boolean') && options.loc;
extra.isKeyword = (typeof options.isKeyword === 'function') && options.isKeyword;
if (extra.loc && options.source !== null && options.source !== undefined) {
delegate = extend(delegate, {
'postProcess': function (node) {
node.loc.source = toString(options.source);
return node;
}
});
}
if (typeof options.tokens === 'boolean' && options.tokens) {
extra.tokens = [];
}
if (typeof options.comment === 'boolean' && options.comment) {
extra.comments = [];
}
if (typeof options.tolerant === 'boolean' && options.tolerant) {
extra.errors = [];
}
}
if (length > 0) {
if (typeof source[0] === 'undefined') {
// Try first to convert to a string. This is good as fast path
// for old IE which understands string indexing for string
// literals only and not for string object.
if (code instanceof String) {
source = code.valueOf();
}
}
}
patch();
try {
program = parseProgram();
if (typeof extra.comments !== 'undefined') {
filterCommentLocation();
program.comments = extra.comments;
}
if (typeof extra.tokens !== 'undefined') {
filterTokenLocation();
program.tokens = extra.tokens;
}
if (typeof extra.errors !== 'undefined') {
program.errors = extra.errors;
}
if (extra.range || extra.loc) {
program.body = filterGroup(program.body);
}
} catch (e) {
throw e;
} finally {
unpatch();
extra = {};
}
return program;
}
// Sync with package.json and component.json.
exports.version = '1.1.0-dev';
exports.parse = parse;
// Deep copy.
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 : */
},{}],5:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var createWrapper = require('lodash._createwrapper'),
slice = require('lodash._slice');
/**
* Creates a function that, when called, invokes `func` with the `this`
* binding of `thisArg` and prepends any additional `bind` arguments to those
* provided to the bound function.
*
* @static
* @memberOf _
* @category Functions
* @param {Function} func The function to bind.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {...*} [arg] Arguments to be partially applied.
* @returns {Function} Returns the new bound function.
* @example
*
* var func = function(greeting) {
* return greeting + ' ' + this.name;
* };
*
* func = _.bind(func, { 'name': 'fred' }, 'hi');
* func();
* // => 'hi fred'
*/
function bind(func, thisArg) {
return arguments.length > 2
? createWrapper(func, 17, slice(arguments, 2), null, thisArg)
: createWrapper(func, 1, null, null, thisArg);
}
module.exports = bind;
},{"lodash._createwrapper":6,"lodash._slice":26}],6:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var baseBind = require('lodash._basebind'),
baseCreateWrapper = require('lodash._basecreatewrapper'),
isFunction = require('lodash.isfunction'),
slice = require('lodash._slice');
/**
* Used for `Array` method references.
*
* Normally `Array.prototype` would suffice, however, using an array literal
* avoids issues in Narwhal.
*/
var arrayRef = [];
/** Native method shortcuts */
var push = arrayRef.push,
unshift = arrayRef.unshift;
/**
* Creates a function that, when called, either curries or invokes `func`
* with an optional `this` binding and partially applied arguments.
*
* @private
* @param {Function|string} func The function or method name to reference.
* @param {number} bitmask The bitmask of method flags to compose.
* The bitmask may be composed of the following flags:
* 1 - `_.bind`
* 2 - `_.bindKey`
* 4 - `_.curry`
* 8 - `_.curry` (bound)
* 16 - `_.partial`
* 32 - `_.partialRight`
* @param {Array} [partialArgs] An array of arguments to prepend to those
* provided to the new function.
* @param {Array} [partialRightArgs] An array of arguments to append to those
* provided to the new function.
* @param {*} [thisArg] The `this` binding of `func`.
* @param {number} [arity] The arity of `func`.
* @returns {Function} Returns the new function.
*/
function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
var isBind = bitmask & 1,
isBindKey = bitmask & 2,
isCurry = bitmask & 4,
isCurryBound = bitmask & 8,
isPartial = bitmask & 16,
isPartialRight = bitmask & 32;
if (!isBindKey && !isFunction(func)) {
throw new TypeError;
}
if (isPartial && !partialArgs.length) {
bitmask &= ~16;
isPartial = partialArgs = false;
}
if (isPartialRight && !partialRightArgs.length) {
bitmask &= ~32;
isPartialRight = partialRightArgs = false;
}
var bindData = func && func.__bindData__;
if (bindData && bindData !== true) {
// clone `bindData`
bindData = slice(bindData);
if (bindData[2]) {
bindData[2] = slice(bindData[2]);
}
if (bindData[3]) {
bindData[3] = slice(bindData[3]);
}
// set `thisBinding` is not previously bound
if (isBind && !(bindData[1] & 1)) {
bindData[4] = thisArg;
}
// set if previously bound but not currently (subsequent curried functions)
if (!isBind && bindData[1] & 1) {
bitmask |= 8;
}
// set curried arity if not yet set
if (isCurry && !(bindData[1] & 4)) {
bindData[5] = arity;
}
// append partial left arguments
if (isPartial) {
push.apply(bindData[2] || (bindData[2] = []), partialArgs);
}
// append partial right arguments
if (isPartialRight) {
unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
}
// merge flags
bindData[1] |= bitmask;
return createWrapper.apply(null, bindData);
}
// fast path for `_.bind`
var creater = (bitmask == 1 || bitmask === 17) ? baseBind : baseCreateWrapper;
return creater([func, bitmask, partialArgs, partialRightArgs, thisArg, arity]);
}
module.exports = createWrapper;
},{"lodash._basebind":7,"lodash._basecreatewrapper":16,"lodash._slice":26,"lodash.isfunction":25}],7:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var baseCreate = require('lodash._basecreate'),
isObject = require('lodash.isobject'),
setBindData = require('lodash._setbinddata'),
slice = require('lodash._slice');
/**
* Used for `Array` method references.
*
* Normally `Array.prototype` would suffice, however, using an array literal
* avoids issues in Narwhal.
*/
var arrayRef = [];
/** Native method shortcuts */
var push = arrayRef.push;
/**
* The base implementation of `_.bind` that creates the bound function and
* sets its meta data.
*
* @private
* @param {Array} bindData The bind data array.
* @returns {Function} Returns the new bound function.
*/
function baseBind(bindData) {
var func = bindData[0],
partialArgs = bindData[2],
thisArg = bindData[4];
function bound() {
// `Function#bind` spec
// http://es5.github.io/#x15.3.4.5
if (partialArgs) {
// avoid `arguments` object deoptimizations by using `slice` instead
// of `Array.prototype.slice.call` and not assigning `arguments` to a
// variable as a ternary expression
var args = slice(partialArgs);
push.apply(args, arguments);
}
// mimic the constructor's `return` behavior
// http://es5.github.io/#x13.2.2
if (this instanceof bound) {
// ensure `new bound` is an instance of `func`
var thisBinding = baseCreate(func.prototype),
result = func.apply(thisBinding, args || arguments);
return isObject(result) ? result : thisBinding;
}
return func.apply(thisArg, args || arguments);
}
setBindData(bound, bindData);
return bound;
}
module.exports = baseBind;
},{"lodash._basecreate":8,"lodash._setbinddata":11,"lodash._slice":26,"lodash.isobject":14}],8:[function(require,module,exports){
(function (global){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var isNative = require('lodash._isnative'),
isObject = require('lodash.isobject'),
noop = require('lodash.noop');
/* Native method shortcuts for methods with the same name as other `lodash` methods */
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate;
/**
* The base implementation of `_.create` without support for assigning
* properties to the created object.
*
* @private
* @param {Object} prototype The object to inherit from.
* @returns {Object} Returns the new object.
*/
function baseCreate(prototype, properties) {
return isObject(prototype) ? nativeCreate(prototype) : {};
}
// fallback for browsers without `Object.create`
if (!nativeCreate) {
baseCreate = (function() {
function Object() {}
return function(prototype) {
if (isObject(prototype)) {
Object.prototype = prototype;
var result = new Object;
Object.prototype = null;
}
return result || global.Object();
};
}());
}
module.exports = baseCreate;
}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"lodash._isnative":9,"lodash.isobject":14,"lodash.noop":10}],9:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
/** Used for native method references */
var objectProto = Object.prototype;
/** Used to resolve the internal [[Class]] of values */
var toString = objectProto.toString;
/** Used to detect if a method is native */
var reNative = RegExp('^' +
String(toString)
.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
.replace(/toString| for [^\]]+/g, '.*?') + '$'
);
/**
* Checks if `value` is a native function.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a native function, else `false`.
*/
function isNative(value) {
return typeof value == 'function' && reNative.test(value);
}
module.exports = isNative;
},{}],10:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
/**
* A no-operation function.
*
* @static
* @memberOf _
* @category Utilities
* @example
*
* var object = { 'name': 'fred' };
* _.noop(object) === undefined;
* // => true
*/
function noop() {
// no operation performed
}
module.exports = noop;
},{}],11:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var isNative = require('lodash._isnative'),
noop = require('lodash.noop');
/** Used as the property descriptor for `__bindData__` */
var descriptor = {
'configurable': false,
'enumerable': false,
'value': null,
'writable': false
};
/** Used to set meta data on functions */
var defineProperty = (function() {
// IE 8 only accepts DOM elements
try {
var o = {},
func = isNative(func = Object.defineProperty) && func,
result = func(o, o, o) && func;
} catch(e) { }
return result;
}());
/**
* Sets `this` binding data on a given function.
*
* @private
* @param {Function} func The function to set data on.
* @param {Array} value The data array to set.
*/
var setBindData = !defineProperty ? noop : function(func, value) {
descriptor.value = value;
defineProperty(func, '__bindData__', descriptor);
};
module.exports = setBindData;
},{"lodash._isnative":12,"lodash.noop":13}],12:[function(require,module,exports){
module.exports=require(9)
},{}],13:[function(require,module,exports){
module.exports=require(10)
},{}],14:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var objectTypes = require('lodash._objecttypes');
/**
* Checks if `value` is the language type of Object.
* (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is an object, else `false`.
* @example
*
* _.isObject({});
* // => true
*
* _.isObject([1, 2, 3]);
* // => true
*
* _.isObject(1);
* // => false
*/
function isObject(value) {
// check if the value is the ECMAScript language type of Object
// http://es5.github.io/#x8
// and avoid a V8 bug
// http://code.google.com/p/v8/issues/detail?id=2291
return !!(value && objectTypes[typeof value]);
}
module.exports = isObject;
},{"lodash._objecttypes":15}],15:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
/** Used to determine if values are of the language type Object */
var objectTypes = {
'boolean': false,
'function': true,
'object': true,
'number': false,
'string': false,
'undefined': false
};
module.exports = objectTypes;
},{}],16:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
var baseCreate = require('lodash._basecreate'),
isObject = require('lodash.isobject'),
setBindData = require('lodash._setbinddata'),
slice = require('lodash._slice');
/**
* Used for `Array` method references.
*
* Normally `Array.prototype` would suffice, however, using an array literal
* avoids issues in Narwhal.
*/
var arrayRef = [];
/** Native method shortcuts */
var push = arrayRef.push;
/**
* The base implementation of `createWrapper` that creates the wrapper and
* sets its meta data.
*
* @private
* @param {Array} bindData The bind data array.
* @returns {Function} Returns the new function.
*/
function baseCreateWrapper(bindData) {
var func = bindData[0],
bitmask = bindData[1],
partialArgs = bindData[2],
partialRightArgs = bindData[3],
thisArg = bindData[4],
arity = bindData[5];
var isBind = bitmask & 1,
isBindKey = bitmask & 2,
isCurry = bitmask & 4,
isCurryBound = bitmask & 8,
key = func;
function bound() {
var thisBinding = isBind ? thisArg : this;
if (partialArgs) {
var args = slice(partialArgs);
push.apply(args, arguments);
}
if (partialRightArgs || isCurry) {
args || (args = slice(arguments));
if (partialRightArgs) {
push.apply(args, partialRightArgs);
}
if (isCurry && args.length < arity) {
bitmask |= 16 & ~32;
return baseCreateWrapper([func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity]);
}
}
args || (args = arguments);
if (isBindKey) {
func = thisBinding[key];
}
if (this instanceof bound) {
thisBinding = baseCreate(func.prototype);
var result = func.apply(thisBinding, args);
return isObject(result) ? result : thisBinding;
}
return func.apply(thisBinding, args);
}
setBindData(bound, bindData);
return bound;
}
module.exports = baseCreateWrapper;
},{"lodash._basecreate":17,"lodash._setbinddata":20,"lodash._slice":26,"lodash.isobject":23}],17:[function(require,module,exports){
module.exports=require(8)
},{"lodash._isnative":18,"lodash.isobject":23,"lodash.noop":19}],18:[function(require,module,exports){
module.exports=require(9)
},{}],19:[function(require,module,exports){
module.exports=require(10)
},{}],20:[function(require,module,exports){
module.exports=require(11)
},{"lodash._isnative":21,"lodash.noop":22}],21:[function(require,module,exports){
module.exports=require(9)
},{}],22:[function(require,module,exports){
module.exports=require(10)
},{}],23:[function(require,module,exports){
module.exports=require(14)
},{"lodash._objecttypes":24}],24:[function(require,module,exports){
module.exports=require(15)
},{}],25:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
/**
* Checks if `value` is a function.
*
* @static
* @memberOf _
* @category Objects
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if the `value` is a function, else `false`.
* @example
*
* _.isFunction(_);
* // => true
*/
function isFunction(value) {
return typeof value == 'function';
}
module.exports = isFunction;
},{}],26:[function(require,module,exports){
/**
* Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
* Build: `lodash modularize modern exports="npm" -o ./npm/`
* Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
* Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <http://lodash.com/license>
*/
/**
* Slices the `collection` from the `start` index up to, but not including,
* the `end` index.
*
* Note: This function is used instead of `Array#slice` to support node lists
* in IE < 9 and to ensure dense arrays are returned.
*
* @private
* @param {Array|Object|string} collection The collection to slice.
* @param {number} start The start index.
* @param {number} end The end index.
* @returns {Array} Returns the new array.
*/
function slice(array, start, end) {
start || (start = 0);
if (typeof end == 'undefined') {
end = array ? array.length : 0;
}
var index = -1,
length = end - start || 0,
result = Array(length < 0 ? 0 : length);
while (++index < length) {
result[index] = array[start + index];
}
return result;
}
module.exports = slice;
},{}],27:[function(require,module,exports){
var check = require('check-types');
var falafel = require('falafel');
var bind = require('lodash.bind');
function grabVariables(foundVariableNames, node) {
if (node.type === 'Identifier') {
// console.log('grabVariables node type:', node.type, node.name);
foundVariableNames.push(node.name);
// console.log('grabVariables node:', node);
}
}
function excludedVars(opts) {
var exclude = opts.exclude || opts.excludeVariables || [];
if (typeof exclude === 'string') {
exclude = [exclude];
}
return function (varName) {
return exclude.indexOf(varName) === -1;
};
}
function findVariables(src, opts) {
opts = opts || {};
var vars = [];
falafel(src, bind(grabVariables, null, vars));
vars = vars.filter(excludedVars(opts));
return vars;
}
module.exports = findVariables;
},{"check-types":2,"falafel":3,"lodash.bind":5}]},{},[1]);