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'use strict'; var has = require('has'); var toPrimitive = require('es-to-primitive/es6'); var GetIntrinsic = require('./GetIntrinsic'); var $TypeError = GetIntrinsic('%TypeError%'); var $SyntaxError = GetIntrinsic('%SyntaxError%'); var $Array = GetIntrinsic('%Array%'); var $String = GetIntrinsic('%String%'); var $Object = GetIntrinsic('%Object%'); var $Number = GetIntrinsic('%Number%'); var $Symbol = GetIntrinsic('%Symbol%', true); var $RegExp = GetIntrinsic('%RegExp%'); var hasSymbols = !!$Symbol; var $isNaN = require('./helpers/isNaN'); var $isFinite = require('./helpers/isFinite'); var MAX_SAFE_INTEGER = $Number.MAX_SAFE_INTEGER \|\| Math.pow(2, 53) - 1; var assign = require('./helpers/assign'); var sign = require('./helpers/sign'); var mod = require('./helpers/mod'); var isPrimitive = require('./helpers/isPrimitive'); var parseInteger = parseInt; var bind = require('function-bind'); var arraySlice = bind.call(Function.call, $Array.prototype.slice); var strSlice = bind.call(Function.call, $String.prototype.slice); var isBinary = bind.call(Function.call, $RegExp.prototype.test, /^0b[01]+$/i); var isOctal = bind.call(Function.call, $RegExp.prototype.test, /^0o[0-7]+$/i); var regexExec = bind.call(Function.call, $RegExp.prototype.exec); var nonWS = ['\u0085', '\u200b', '\ufffe'].join(''); var nonWSregex = new $RegExp('[' + nonWS + ']', 'g'); var hasNonWS = bind.call(Function.call, $RegExp.prototype.test, nonWSregex); var invalidHexLiteral = /^[-+]0x[0-9a-f]+$/i; var isInvalidHexLiteral = bind.call(Function.call, $RegExp.prototype.test, invalidHexLiteral); var $charCodeAt = bind.call(Function.call, $String.prototype.charCodeAt); var toStr = bind.call(Function.call, Object.prototype.toString); var $floor = Math.floor; var $abs = Math.abs; var $ObjectCreate = Object.create; var $gOPD = $Object.getOwnPropertyDescriptor; var $isExtensible = $Object.isExtensible; // whitespace from: http://es5.github.io/#x15.5.4.20 // implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324 var ws = [ '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003', '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028', '\u2029\uFEFF' ].join(''); var trimRegex = new RegExp('(^[' + ws + ']+)\|([' + ws + ']+$)', 'g'); var replace = bind.call(Function.call, $String.prototype.replace); var trim = function (value) { return replace(value, trimRegex, ''); }; var ES5 = require('./es5'); var hasRegExpMatcher = require('is-regex'); // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-abstract-operations var ES6 = assign(assign({}, ES5), { // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-call-f-v-args Call: function Call(F, V) { var args = arguments.length > 2 ? arguments[2] : []; if (!this.IsCallable(F)) { throw new $TypeError(F + ' is not a function'); } return F.apply(V, args); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toprimitive ToPrimitive: toPrimitive, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toboolean // ToBoolean: ES5.ToBoolean, // https://ecma-international.org/ecma-262/6.0/#sec-tonumber ToNumber: function ToNumber(argument) { var value = isPrimitive(argument) ? argument : toPrimitive(argument, $Number); if (typeof value === 'symbol') { throw new $TypeError('Cannot convert a Symbol value to a number'); } if (typeof value === 'string') { if (isBinary(value)) { return this.ToNumber(parseInteger(strSlice(value, 2), 2)); } else if (isOctal(value)) { return this.ToNumber(parseInteger(strSlice(value, 2), 8)); } else if (hasNonWS(value) \|\| isInvalidHexLiteral(value)) { return NaN; } else { var trimmed = trim(value); if (trimmed !== value) { return this.ToNumber(trimmed); } } } return $Number(value); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tointeger // ToInteger: ES5.ToNumber, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint32 // ToInt32: ES5.ToInt32, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint32 // ToUint32: ES5.ToUint32, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint16 ToInt16: function ToInt16(argument) { var int16bit = this.ToUint16(argument); return int16bit >= 0x8000 ? int16bit - 0x10000 : int16bit; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint16 // ToUint16: ES5.ToUint16, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint8 ToInt8: function ToInt8(argument) { var int8bit = this.ToUint8(argument); return int8bit >= 0x80 ? int8bit - 0x100 : int8bit; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint8 ToUint8: function ToUint8(argument) { var number = this.ToNumber(argument); if ($isNaN(number) \|\| number === 0 \|\| !$isFinite(number)) { return 0; } var posInt = sign(number) * $floor($abs(number)); return mod(posInt, 0x100); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint8clamp ToUint8Clamp: function ToUint8Clamp(argument) { var number = this.ToNumber(argument); if ($isNaN(number) \|\| number <= 0) { return 0; } if (number >= 0xFF) { return 0xFF; } var f = $floor(argument); if (f + 0.5 < number) { return f + 1; } if (number < f + 0.5) { return f; } if (f % 2 !== 0) { return f + 1; } return f; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tostring ToString: function ToString(argument) { if (typeof argument === 'symbol') { throw new $TypeError('Cannot convert a Symbol value to a string'); } return $String(argument); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toobject ToObject: function ToObject(value) { this.RequireObjectCoercible(value); return $Object(value); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-topropertykey ToPropertyKey: function ToPropertyKey(argument) { var key = this.ToPrimitive(argument, $String); return typeof key === 'symbol' ? key : this.ToString(key); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength ToLength: function ToLength(argument) { var len = this.ToInteger(argument); if (len <= 0) { return 0; } // includes converting -0 to +0 if (len > MAX_SAFE_INTEGER) { return MAX_SAFE_INTEGER; } return len; }, // https://ecma-international.org/ecma-262/6.0/#sec-canonicalnumericindexstring CanonicalNumericIndexString: function CanonicalNumericIndexString(argument) { if (toStr(argument) !== '[object String]') { throw new $TypeError('must be a string'); } if (argument === '-0') { return -0; } var n = this.ToNumber(argument); if (this.SameValue(this.ToString(n), argument)) { return n; } return void 0; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-requireobjectcoercible RequireObjectCoercible: ES5.CheckObjectCoercible, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isarray IsArray: $Array.isArray \|\| function IsArray(argument) { return toStr(argument) === '[object Array]'; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-iscallable // IsCallable: ES5.IsCallable, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isconstructor IsConstructor: function IsConstructor(argument) { return typeof argument === 'function' && !!argument.prototype; // unfortunately there's no way to truly check this without try/catch `new argument` }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isextensible-o IsExtensible: Object.preventExtensions ? function IsExtensible(obj) { if (isPrimitive(obj)) { return false; } return $isExtensible(obj); } : function isExtensible(obj) { return true; }, // eslint-disable-line no-unused-vars // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isinteger IsInteger: function IsInteger(argument) { if (typeof argument !== 'number' \|\| $isNaN(argument) \|\| !$isFinite(argument)) { return false; } var abs = $abs(argument); return $floor(abs) === abs; }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-ispropertykey IsPropertyKey: function IsPropertyKey(argument) { return typeof argument === 'string' \|\| typeof argument === 'symbol'; }, // https://ecma-international.org/ecma-262/6.0/#sec-isregexp IsRegExp: function IsRegExp(argument) { if (!argument \|\| typeof argument !== 'object') { return false; } if (hasSymbols) { var isRegExp = argument[$Symbol.match]; if (typeof isRegExp !== 'undefined') { return ES5.ToBoolean(isRegExp); } } return hasRegExpMatcher(argument); }, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevalue // SameValue: ES5.SameValue, // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero SameValueZero: function SameValueZero(x, y) { return (x === y) \|\| ($isNaN(x) && $isNaN(y)); }, /** * 7.3.2 GetV (V, P) * 1. Assert: IsPropertyKey(P) is true. * 2. Let O be ToObject(V). * 3. ReturnIfAbrupt(O). * 4. Return O.[[Get]](P, V). / GetV: function GetV(V, P) { // 7.3.2.1 if (!this.IsPropertyKey(P)) { throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); } // 7.3.2.2-3 var O = this.ToObject(V); // 7.3.2.4 return O[P]; }, /* * 7.3.9 - https://ecma-international.org/ecma-262/6.0/#sec-getmethod * 1. Assert: IsPropertyKey(P) is true. * 2. Let func be GetV(O, P). * 3. ReturnIfAbrupt(func). * 4. If func is either undefined or null, return undefined. * 5. If IsCallable(func) is false, throw a TypeError exception. * 6. Return func. / GetMethod: function GetMethod(O, P) { // 7.3.9.1 if (!this.IsPropertyKey(P)) { throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); } // 7.3.9.2 var func = this.GetV(O, P); // 7.3.9.4 if (func == null) { return void 0; } // 7.3.9.5 if (!this.IsCallable(func)) { throw new $TypeError(P + 'is not a function'); } // 7.3.9.6 return func; }, /* * 7.3.1 Get (O, P) - https://ecma-international.org/ecma-262/6.0/#sec-get-o-p * 1. Assert: Type(O) is Object. * 2. Assert: IsPropertyKey(P) is true. * 3. Return O.[[Get]](P, O). / Get: function Get(O, P) { // 7.3.1.1 if (this.Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } // 7.3.1.2 if (!this.IsPropertyKey(P)) { throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); } // 7.3.1.3 return O[P]; }, Type: function Type(x) { if (typeof x === 'symbol') { return 'Symbol'; } return ES5.Type(x); }, // https://ecma-international.org/ecma-262/6.0/#sec-speciesconstructor SpeciesConstructor: function SpeciesConstructor(O, defaultConstructor) { if (this.Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } var C = O.constructor; if (typeof C === 'undefined') { return defaultConstructor; } if (this.Type(C) !== 'Object') { throw new $TypeError('O.constructor is not an Object'); } var S = hasSymbols && $Symbol.species ? C[$Symbol.species] : void 0; if (S == null) { return defaultConstructor; } if (this.IsConstructor(S)) { return S; } throw new $TypeError('no constructor found'); }, // https://ecma-international.org/ecma-262/6.0/#sec-completepropertydescriptor CompletePropertyDescriptor: function CompletePropertyDescriptor(Desc) { if (!this.IsPropertyDescriptor(Desc)) { throw new $TypeError('Desc must be a Property Descriptor'); } if (this.IsGenericDescriptor(Desc) \|\| this.IsDataDescriptor(Desc)) { if (!has(Desc, '[[Value]]')) { Desc['[[Value]]'] = void 0; } if (!has(Desc, '[[Writable]]')) { Desc['[[Writable]]'] = false; } } else { if (!has(Desc, '[[Get]]')) { Desc['[[Get]]'] = void 0; } if (!has(Desc, '[[Set]]')) { Desc['[[Set]]'] = void 0; } } if (!has(Desc, '[[Enumerable]]')) { Desc['[[Enumerable]]'] = false; } if (!has(Desc, '[[Configurable]]')) { Desc['[[Configurable]]'] = false; } return Desc; }, // https://ecma-international.org/ecma-262/6.0/#sec-set-o-p-v-throw Set: function Set(O, P, V, Throw) { if (this.Type(O) !== 'Object') { throw new $TypeError('O must be an Object'); } if (!this.IsPropertyKey(P)) { throw new $TypeError('P must be a Property Key'); } if (this.Type(Throw) !== 'Boolean') { throw new $TypeError('Throw must be a Boolean'); } if (Throw) { O[P] = V; return true; } else { try { O[P] = V; } catch (e) { return false; } } }, // https://ecma-international.org/ecma-262/6.0/#sec-hasownproperty HasOwnProperty: function HasOwnProperty(O, P) { if (this.Type(O) !== 'Object') { throw new $TypeError('O must be an Object'); } if (!this.IsPropertyKey(P)) { throw new $TypeError('P must be a Property Key'); } return has(O, P); }, // https://ecma-international.org/ecma-262/6.0/#sec-hasproperty HasProperty: function HasProperty(O, P) { if (this.Type(O) !== 'Object') { throw new $TypeError('O must be an Object'); } if (!this.IsPropertyKey(P)) { throw new $TypeError('P must be a Property Key'); } return P in O; }, // https://ecma-international.org/ecma-262/6.0/#sec-isconcatspreadable IsConcatSpreadable: function IsConcatSpreadable(O) { if (this.Type(O) !== 'Object') { return false; } if (hasSymbols && typeof $Symbol.isConcatSpreadable === 'symbol') { var spreadable = this.Get(O, Symbol.isConcatSpreadable); if (typeof spreadable !== 'undefined') { return this.ToBoolean(spreadable); } } return this.IsArray(O); }, // https://ecma-international.org/ecma-262/6.0/#sec-invoke Invoke: function Invoke(O, P) { if (!this.IsPropertyKey(P)) { throw new $TypeError('P must be a Property Key'); } var argumentsList = arraySlice(arguments, 2); var func = this.GetV(O, P); return this.Call(func, O, argumentsList); }, // https://ecma-international.org/ecma-262/6.0/#sec-getiterator GetIterator: function GetIterator(obj, method) { if (!hasSymbols) { throw new SyntaxError('ES.GetIterator depends on native iterator support.'); } var actualMethod = method; if (arguments.length < 2) { actualMethod = this.GetMethod(obj, $Symbol.iterator); } var iterator = this.Call(actualMethod, obj); if (this.Type(iterator) !== 'Object') { throw new $TypeError('iterator must return an object'); } return iterator; }, // https://ecma-international.org/ecma-262/6.0/#sec-iteratornext IteratorNext: function IteratorNext(iterator, value) { var result = this.Invoke(iterator, 'next', arguments.length < 2 ? [] : [value]); if (this.Type(result) !== 'Object') { throw new $TypeError('iterator next must return an object'); } return result; }, // https://ecma-international.org/ecma-262/6.0/#sec-iteratorcomplete IteratorComplete: function IteratorComplete(iterResult) { if (this.Type(iterResult) !== 'Object') { throw new $TypeError('Assertion failed: Type(iterResult) is not Object'); } return this.ToBoolean(this.Get(iterResult, 'done')); }, // https://ecma-international.org/ecma-262/6.0/#sec-iteratorvalue IteratorValue: function IteratorValue(iterResult) { if (this.Type(iterResult) !== 'Object') { throw new $TypeError('Assertion failed: Type(iterResult) is not Object'); } return this.Get(iterResult, 'value'); }, // https://ecma-international.org/ecma-262/6.0/#sec-iteratorstep IteratorStep: function IteratorStep(iterator) { var result = this.IteratorNext(iterator); var done = this.IteratorComplete(result); return done === true ? false : result; }, // https://ecma-international.org/ecma-262/6.0/#sec-iteratorclose IteratorClose: function IteratorClose(iterator, completion) { if (this.Type(iterator) !== 'Object') { throw new $TypeError('Assertion failed: Type(iterator) is not Object'); } if (!this.IsCallable(completion)) { throw new $TypeError('Assertion failed: completion is not a thunk for a Completion Record'); } var completionThunk = completion; var iteratorReturn = this.GetMethod(iterator, 'return'); if (typeof iteratorReturn === 'undefined') { return completionThunk(); } var completionRecord; try { var innerResult = this.Call(iteratorReturn, iterator, []); } catch (e) { // if we hit here, then "e" is the innerResult completion that needs re-throwing // if the completion is of type "throw", this will throw. completionRecord = completionThunk(); completionThunk = null; // ensure it's not called twice. // if not, then return the innerResult completion throw e; } completionRecord = completionThunk(); // if innerResult worked, then throw if the completion does completionThunk = null; // ensure it's not called twice. if (this.Type(innerResult) !== 'Object') { throw new $TypeError('iterator .return must return an object'); } return completionRecord; }, // https://ecma-international.org/ecma-262/6.0/#sec-createiterresultobject CreateIterResultObject: function CreateIterResultObject(value, done) { if (this.Type(done) !== 'Boolean') { throw new $TypeError('Assertion failed: Type(done) is not Boolean'); } return { value: value, done: done }; }, // https://ecma-international.org/ecma-262/6.0/#sec-regexpexec RegExpExec: function RegExpExec(R, S) { if (this.Type(R) !== 'Object') { throw new $TypeError('R must be an Object'); } if (this.Type(S) !== 'String') { throw new $TypeError('S must be a String'); } var exec = this.Get(R, 'exec'); if (this.IsCallable(exec)) { var result = this.Call(exec, R, [S]); if (result === null \|\| this.Type(result) === 'Object') { return result; } throw new $TypeError('"exec" method must return `null` or an Object'); } return regexExec(R, S); }, // https://ecma-international.org/ecma-262/6.0/#sec-arrayspeciescreate ArraySpeciesCreate: function ArraySpeciesCreate(originalArray, length) { if (!this.IsInteger(length) \|\| length < 0) { throw new $TypeError('Assertion failed: length must be an integer >= 0'); } var len = length === 0 ? 0 : length; var C; var isArray = this.IsArray(originalArray); if (isArray) { C = this.Get(originalArray, 'constructor'); // TODO: figure out how to make a cross-realm normal Array, a same-realm Array // if (this.IsConstructor(C)) { // if C is another realm's Array, C = undefined // Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(Array))) === null ? // } if (this.Type(C) === 'Object' && hasSymbols && $Symbol.species) { C = this.Get(C, $Symbol.species); if (C === null) { C = void 0; } } } if (typeof C === 'undefined') { return $Array(len); } if (!this.IsConstructor(C)) { throw new $TypeError('C must be a constructor'); } return new C(len); // this.Construct(C, len); }, CreateDataProperty: function CreateDataProperty(O, P, V) { if (this.Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } if (!this.IsPropertyKey(P)) { throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); } var oldDesc = $gOPD(O, P); var extensible = oldDesc \|\| (typeof $isExtensible !== 'function' \|\| $isExtensible(O)); var immutable = oldDesc && (!oldDesc.writable \|\| !oldDesc.configurable); if (immutable \|\| !extensible) { return false; } var newDesc = { configurable: true, enumerable: true, value: V, writable: true }; Object.defineProperty(O, P, newDesc); return true; }, // https://ecma-international.org/ecma-262/6.0/#sec-createdatapropertyorthrow CreateDataPropertyOrThrow: function CreateDataPropertyOrThrow(O, P, V) { if (this.Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } if (!this.IsPropertyKey(P)) { throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); } var success = this.CreateDataProperty(O, P, V); if (!success) { throw new $TypeError('unable to create data property'); } return success; }, // https://www.ecma-international.org/ecma-262/6.0/#sec-objectcreate ObjectCreate: function ObjectCreate(proto, internalSlotsList) { if (proto !== null && this.Type(proto) !== 'Object') { throw new $TypeError('Assertion failed: proto must be null or an object'); } var slots = arguments.length < 2 ? [] : internalSlotsList; if (slots.length > 0) { throw new $SyntaxError('es-abstract does not yet support internal slots'); } if (proto === null && !$ObjectCreate) { throw new $SyntaxError('native Object.create support is required to create null objects'); } return $ObjectCreate(proto); }, // https://ecma-international.org/ecma-262/6.0/#sec-advancestringindex AdvanceStringIndex: function AdvanceStringIndex(S, index, unicode) { if (this.Type(S) !== 'String') { throw new $TypeError('S must be a String'); } if (!this.IsInteger(index) \|\| index < 0 \|\| index > MAX_SAFE_INTEGER) { throw new $TypeError('Assertion failed: length must be an integer >= 0 and <= 2*53'); } if (this.Type(unicode) !== 'Boolean') { throw new $TypeError('Assertion failed: unicode must be a Boolean'); } if (!unicode) { return index + 1; } var length = S.length; if ((index + 1) >= length) { return index + 1; } var first = $charCodeAt(S, index); if (first < 0xD800 \|\| first > 0xDBFF) { return index + 1; } var second = $charCodeAt(S, index + 1); if (second < 0xDC00 \|\| second > 0xDFFF) { return index + 1; } return index + 2; } }); delete ES6.CheckObjectCoercible; // renamed in ES6 to RequireObjectCoercible module.exports = ES6;

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