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1466 lines
47 KiB
1466 lines
47 KiB
'use strict';
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var has = require('has');
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var toPrimitive = require('es-to-primitive/es6');
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var keys = require('object-keys');
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var inspect = require('object-inspect');
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var GetIntrinsic = require('./GetIntrinsic');
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var $TypeError = GetIntrinsic('%TypeError%');
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var $RangeError = GetIntrinsic('%RangeError%');
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var $SyntaxError = GetIntrinsic('%SyntaxError%');
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var $Array = GetIntrinsic('%Array%');
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var $ArrayPrototype = $Array.prototype;
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var $String = GetIntrinsic('%String%');
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var $Object = GetIntrinsic('%Object%');
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var $Number = GetIntrinsic('%Number%');
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var $Symbol = GetIntrinsic('%Symbol%', true);
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var $RegExp = GetIntrinsic('%RegExp%');
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var $Date = GetIntrinsic('%Date%');
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var $Function = GetIntrinsic('%Function%');
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var $preventExtensions = $Object.preventExtensions;
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var hasSymbols = require('has-symbols')();
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var assertRecord = require('./helpers/assertRecord');
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var $isNaN = require('./helpers/isNaN');
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var $isFinite = require('./helpers/isFinite');
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var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1;
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var MAX_SAFE_INTEGER = require('./helpers/maxSafeInteger');
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var assign = require('./helpers/assign');
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var sign = require('./helpers/sign');
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var mod = require('./helpers/mod');
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var isPrimitive = require('./helpers/isPrimitive');
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var forEach = require('./helpers/forEach');
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var every = require('./helpers/every');
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var isSamePropertyDescriptor = require('./helpers/isSamePropertyDescriptor');
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var isPropertyDescriptor = require('./helpers/isPropertyDescriptor');
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var parseInteger = parseInt;
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var callBound = require('./helpers/callBound');
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var regexTester = require('./helpers/regexTester');
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var getIteratorMethod = require('./helpers/getIteratorMethod');
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var getSymbolDescription = require('./helpers/getSymbolDescription');
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var $PromiseThen = callBound('Promise.prototype.then', true);
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var arraySlice = callBound('Array.prototype.slice');
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var strSlice = callBound('String.prototype.slice');
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var $indexOf = callBound('Array.prototype.indexOf');
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var $push = callBound('Array.prototype.push');
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var isBinary = regexTester(/^0b[01]+$/i);
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var isOctal = regexTester(/^0o[0-7]+$/i);
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var isDigit = regexTester(/^[0-9]$/);
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var regexExec = callBound('RegExp.prototype.exec');
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var nonWS = ['\u0085', '\u200b', '\ufffe'].join('');
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var nonWSregex = new $RegExp('[' + nonWS + ']', 'g');
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var hasNonWS = regexTester(nonWSregex);
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var isInvalidHexLiteral = regexTester(/^[-+]0x[0-9a-f]+$/i);
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var $charCodeAt = callBound('String.prototype.charCodeAt');
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var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
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var toStr = callBound('Object.prototype.toString');
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var $NumberValueOf = callBound('Number.prototype.valueOf');
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var $BooleanValueOf = callBound('Boolean.prototype.valueOf');
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var $StringValueOf = callBound('String.prototype.valueOf');
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var $DateValueOf = callBound('Date.prototype.valueOf');
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var $SymbolToString = callBound('Symbol.prototype.toString', true);
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var $floor = Math.floor;
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var $abs = Math.abs;
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var $ObjectCreate = $Object.create;
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var $gOPD = $Object.getOwnPropertyDescriptor;
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var $gOPN = $Object.getOwnPropertyNames;
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var $gOPS = $Object.getOwnPropertySymbols;
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var $isExtensible = $Object.isExtensible;
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var $defineProperty = $Object.defineProperty;
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var $setProto = require('./helpers/setProto');
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var DefineOwnProperty = function DefineOwnProperty(ES, O, P, desc) {
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if (!$defineProperty) {
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if (!ES.IsDataDescriptor(desc)) {
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// ES3 does not support getters/setters
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return false;
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}
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if (!desc['[[Configurable]]'] || !desc['[[Writable]]']) {
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return false;
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}
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// fallback for ES3
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if (P in O && $isEnumerable(O, P) !== !!desc['[[Enumerable]]']) {
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// a non-enumerable existing property
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return false;
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}
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// property does not exist at all, or exists but is enumerable
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var V = desc['[[Value]]'];
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// eslint-disable-next-line no-param-reassign
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O[P] = V; // will use [[Define]]
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return ES.SameValue(O[P], V);
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}
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$defineProperty(O, P, ES.FromPropertyDescriptor(desc));
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return true;
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};
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// whitespace from: https://es5.github.io/#x15.5.4.20
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// implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324
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var ws = [
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'\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003',
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'\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028',
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'\u2029\uFEFF'
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].join('');
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var trimRegex = new RegExp('(^[' + ws + ']+)|([' + ws + ']+$)', 'g');
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var $replace = callBound('String.prototype.replace');
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var trim = function (value) {
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return $replace(value, trimRegex, '');
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};
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var ES5 = require('./es5');
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var hasRegExpMatcher = require('is-regex');
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-abstract-operations
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var ES6 = assign(assign({}, ES5), {
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-call-f-v-args
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Call: function Call(F, V) {
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var args = arguments.length > 2 ? arguments[2] : [];
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if (!this.IsCallable(F)) {
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throw new $TypeError(inspect(F) + ' is not a function');
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}
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return F.apply(V, args);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toprimitive
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ToPrimitive: toPrimitive,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toboolean
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// ToBoolean: ES5.ToBoolean,
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// https://ecma-international.org/ecma-262/6.0/#sec-tonumber
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ToNumber: function ToNumber(argument) {
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var value = isPrimitive(argument) ? argument : toPrimitive(argument, $Number);
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if (typeof value === 'symbol') {
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throw new $TypeError('Cannot convert a Symbol value to a number');
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}
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if (typeof value === 'string') {
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if (isBinary(value)) {
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return this.ToNumber(parseInteger(strSlice(value, 2), 2));
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} else if (isOctal(value)) {
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return this.ToNumber(parseInteger(strSlice(value, 2), 8));
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} else if (hasNonWS(value) || isInvalidHexLiteral(value)) {
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return NaN;
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} else {
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var trimmed = trim(value);
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if (trimmed !== value) {
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return this.ToNumber(trimmed);
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}
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}
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}
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return $Number(value);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tointeger
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// ToInteger: ES5.ToNumber,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint32
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// ToInt32: ES5.ToInt32,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint32
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// ToUint32: ES5.ToUint32,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint16
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ToInt16: function ToInt16(argument) {
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var int16bit = this.ToUint16(argument);
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return int16bit >= 0x8000 ? int16bit - 0x10000 : int16bit;
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint16
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// ToUint16: ES5.ToUint16,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toint8
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ToInt8: function ToInt8(argument) {
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var int8bit = this.ToUint8(argument);
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return int8bit >= 0x80 ? int8bit - 0x100 : int8bit;
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint8
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ToUint8: function ToUint8(argument) {
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var number = this.ToNumber(argument);
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if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
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var posInt = sign(number) * $floor($abs(number));
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return mod(posInt, 0x100);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-touint8clamp
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ToUint8Clamp: function ToUint8Clamp(argument) {
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var number = this.ToNumber(argument);
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if ($isNaN(number) || number <= 0) { return 0; }
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if (number >= 0xFF) { return 0xFF; }
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var f = $floor(argument);
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if (f + 0.5 < number) { return f + 1; }
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if (number < f + 0.5) { return f; }
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if (f % 2 !== 0) { return f + 1; }
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return f;
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tostring
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ToString: function ToString(argument) {
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if (typeof argument === 'symbol') {
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throw new $TypeError('Cannot convert a Symbol value to a string');
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}
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return $String(argument);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-toobject
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ToObject: function ToObject(value) {
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this.RequireObjectCoercible(value);
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return $Object(value);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-topropertykey
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ToPropertyKey: function ToPropertyKey(argument) {
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var key = this.ToPrimitive(argument, $String);
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return typeof key === 'symbol' ? key : this.ToString(key);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
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ToLength: function ToLength(argument) {
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var len = this.ToInteger(argument);
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if (len <= 0) { return 0; } // includes converting -0 to +0
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if (len > MAX_SAFE_INTEGER) { return MAX_SAFE_INTEGER; }
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return len;
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},
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// https://ecma-international.org/ecma-262/6.0/#sec-canonicalnumericindexstring
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CanonicalNumericIndexString: function CanonicalNumericIndexString(argument) {
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if (toStr(argument) !== '[object String]') {
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throw new $TypeError('must be a string');
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}
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if (argument === '-0') { return -0; }
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var n = this.ToNumber(argument);
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if (this.SameValue(this.ToString(n), argument)) { return n; }
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return void 0;
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-requireobjectcoercible
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RequireObjectCoercible: ES5.CheckObjectCoercible,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isarray
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IsArray: $Array.isArray || function IsArray(argument) {
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return toStr(argument) === '[object Array]';
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-iscallable
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// IsCallable: ES5.IsCallable,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isconstructor
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IsConstructor: function IsConstructor(argument) {
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return typeof argument === 'function' && !!argument.prototype; // unfortunately there's no way to truly check this without try/catch `new argument` or Proxy
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isextensible-o
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IsExtensible: $preventExtensions
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? function IsExtensible(obj) {
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if (isPrimitive(obj)) {
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return false;
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}
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return $isExtensible(obj);
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}
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: function isExtensible(obj) { return true; }, // eslint-disable-line no-unused-vars
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isinteger
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IsInteger: function IsInteger(argument) {
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if (typeof argument !== 'number' || $isNaN(argument) || !$isFinite(argument)) {
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return false;
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}
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var abs = $abs(argument);
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return $floor(abs) === abs;
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-ispropertykey
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IsPropertyKey: function IsPropertyKey(argument) {
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return typeof argument === 'string' || typeof argument === 'symbol';
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},
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// https://ecma-international.org/ecma-262/6.0/#sec-isregexp
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IsRegExp: function IsRegExp(argument) {
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if (!argument || typeof argument !== 'object') {
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return false;
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}
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if (hasSymbols) {
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var isRegExp = argument[$Symbol.match];
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if (typeof isRegExp !== 'undefined') {
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return ES5.ToBoolean(isRegExp);
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}
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}
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return hasRegExpMatcher(argument);
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},
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevalue
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// SameValue: ES5.SameValue,
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// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero
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SameValueZero: function SameValueZero(x, y) {
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return (x === y) || ($isNaN(x) && $isNaN(y));
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},
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/**
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* 7.3.2 GetV (V, P)
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* 1. Assert: IsPropertyKey(P) is true.
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* 2. Let O be ToObject(V).
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* 3. ReturnIfAbrupt(O).
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* 4. Return O.[[Get]](P, V).
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*/
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GetV: function GetV(V, P) {
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// 7.3.2.1
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if (!this.IsPropertyKey(P)) {
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throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true');
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}
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// 7.3.2.2-3
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var O = this.ToObject(V);
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// 7.3.2.4
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return O[P];
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},
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/**
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* 7.3.9 - https://ecma-international.org/ecma-262/6.0/#sec-getmethod
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* 1. Assert: IsPropertyKey(P) is true.
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* 2. Let func be GetV(O, P).
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* 3. ReturnIfAbrupt(func).
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* 4. If func is either undefined or null, return undefined.
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* 5. If IsCallable(func) is false, throw a TypeError exception.
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* 6. Return func.
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*/
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GetMethod: function GetMethod(O, P) {
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// 7.3.9.1
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if (!this.IsPropertyKey(P)) {
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throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true');
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}
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// 7.3.9.2
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var func = this.GetV(O, P);
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// 7.3.9.4
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if (func == null) {
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return void 0;
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}
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// 7.3.9.5
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if (!this.IsCallable(func)) {
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throw new $TypeError(P + 'is not a function');
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}
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// 7.3.9.6
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return func;
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},
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/**
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* 7.3.1 Get (O, P) - https://ecma-international.org/ecma-262/6.0/#sec-get-o-p
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* 1. Assert: Type(O) is Object.
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* 2. Assert: IsPropertyKey(P) is true.
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* 3. Return O.[[Get]](P, O).
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*/
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Get: function Get(O, P) {
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// 7.3.1.1
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if (this.Type(O) !== 'Object') {
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throw new $TypeError('Assertion failed: Type(O) is not Object');
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}
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// 7.3.1.2
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if (!this.IsPropertyKey(P)) {
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throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true, got ' + inspect(P));
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}
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// 7.3.1.3
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return O[P];
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},
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Type: function Type(x) {
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if (typeof x === 'symbol') {
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return 'Symbol';
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}
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return ES5.Type(x);
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},
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// https://ecma-international.org/ecma-262/6.0/#sec-speciesconstructor
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SpeciesConstructor: function SpeciesConstructor(O, defaultConstructor) {
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if (this.Type(O) !== 'Object') {
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throw new $TypeError('Assertion failed: Type(O) is not Object');
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}
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var C = O.constructor;
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if (typeof C === 'undefined') {
|
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return defaultConstructor;
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}
|
|
if (this.Type(C) !== 'Object') {
|
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throw new $TypeError('O.constructor is not an Object');
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|
}
|
|
var S = hasSymbols && $Symbol.species ? C[$Symbol.species] : void 0;
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|
if (S == null) {
|
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return defaultConstructor;
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|
}
|
|
if (this.IsConstructor(S)) {
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return S;
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}
|
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throw new $TypeError('no constructor found');
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},
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|
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// https://www.ecma-international.org/ecma-262/6.0/#sec-frompropertydescriptor
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FromPropertyDescriptor: function FromPropertyDescriptor(Desc) {
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|
if (typeof Desc === 'undefined') {
|
|
return Desc;
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|
}
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|
|
|
assertRecord(this, 'Property Descriptor', 'Desc', Desc);
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|
|
|
var obj = {};
|
|
if ('[[Value]]' in Desc) {
|
|
obj.value = Desc['[[Value]]'];
|
|
}
|
|
if ('[[Writable]]' in Desc) {
|
|
obj.writable = Desc['[[Writable]]'];
|
|
}
|
|
if ('[[Get]]' in Desc) {
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|
obj.get = Desc['[[Get]]'];
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|
}
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if ('[[Set]]' in Desc) {
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obj.set = Desc['[[Set]]'];
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|
}
|
|
if ('[[Enumerable]]' in Desc) {
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|
obj.enumerable = Desc['[[Enumerable]]'];
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|
}
|
|
if ('[[Configurable]]' in Desc) {
|
|
obj.configurable = Desc['[[Configurable]]'];
|
|
}
|
|
return obj;
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|
},
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|
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// https://ecma-international.org/ecma-262/6.0/#sec-completepropertydescriptor
|
|
CompletePropertyDescriptor: function CompletePropertyDescriptor(Desc) {
|
|
/* eslint no-param-reassign: 0 */
|
|
assertRecord(this, 'Property Descriptor', 'Desc', Desc);
|
|
|
|
if (this.IsGenericDescriptor(Desc) || this.IsDataDescriptor(Desc)) {
|
|
if (!has(Desc, '[[Value]]')) {
|
|
Desc['[[Value]]'] = void 0;
|
|
}
|
|
if (!has(Desc, '[[Writable]]')) {
|
|
Desc['[[Writable]]'] = false;
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|
}
|
|
} else {
|
|
if (!has(Desc, '[[Get]]')) {
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|
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) {
|
|
var actualMethod = method;
|
|
if (arguments.length < 2) {
|
|
actualMethod = getIteratorMethod(this, obj);
|
|
}
|
|
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 || this.IsExtensible(O);
|
|
var immutable = oldDesc && (!oldDesc.writable || !oldDesc.configurable);
|
|
if (immutable || !extensible) {
|
|
return false;
|
|
}
|
|
return DefineOwnProperty(this, O, P, {
|
|
'[[Configurable]]': true,
|
|
'[[Enumerable]]': true,
|
|
'[[Value]]': V,
|
|
'[[Writable]]': 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;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-createmethodproperty
|
|
CreateMethodProperty: function CreateMethodProperty(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 newDesc = {
|
|
'[[Configurable]]': true,
|
|
'[[Enumerable]]': false,
|
|
'[[Value]]': V,
|
|
'[[Writable]]': true
|
|
};
|
|
return DefineOwnProperty(this, O, P, newDesc);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-definepropertyorthrow
|
|
DefinePropertyOrThrow: function DefinePropertyOrThrow(O, P, desc) {
|
|
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 Desc = isPropertyDescriptor(this, desc) ? desc : this.ToPropertyDescriptor(desc);
|
|
if (!isPropertyDescriptor(this, Desc)) {
|
|
throw new $TypeError('Assertion failed: Desc is not a valid Property Descriptor');
|
|
}
|
|
|
|
return DefineOwnProperty(this, O, P, Desc);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-deletepropertyorthrow
|
|
DeletePropertyOrThrow: function DeletePropertyOrThrow(O, P) {
|
|
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 = delete O[P];
|
|
if (!success) {
|
|
throw new TypeError('Attempt to delete property failed.');
|
|
}
|
|
return success;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-enumerableownnames
|
|
EnumerableOwnNames: function EnumerableOwnNames(O) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
|
|
return keys(O);
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-number-prototype-object
|
|
thisNumberValue: function thisNumberValue(value) {
|
|
if (this.Type(value) === 'Number') {
|
|
return value;
|
|
}
|
|
|
|
return $NumberValueOf(value);
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-boolean-prototype-object
|
|
thisBooleanValue: function thisBooleanValue(value) {
|
|
if (this.Type(value) === 'Boolean') {
|
|
return value;
|
|
}
|
|
|
|
return $BooleanValueOf(value);
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-string-prototype-object
|
|
thisStringValue: function thisStringValue(value) {
|
|
if (this.Type(value) === 'String') {
|
|
return value;
|
|
}
|
|
|
|
return $StringValueOf(value);
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-date-prototype-object
|
|
thisTimeValue: function thisTimeValue(value) {
|
|
return $DateValueOf(value);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-setintegritylevel
|
|
SetIntegrityLevel: function SetIntegrityLevel(O, level) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
if (level !== 'sealed' && level !== 'frozen') {
|
|
throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
|
|
}
|
|
if (!$preventExtensions) {
|
|
throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support');
|
|
}
|
|
var status = $preventExtensions(O);
|
|
if (!status) {
|
|
return false;
|
|
}
|
|
if (!$gOPN) {
|
|
throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support');
|
|
}
|
|
var theKeys = $gOPN(O);
|
|
var ES = this;
|
|
if (level === 'sealed') {
|
|
forEach(theKeys, function (k) {
|
|
ES.DefinePropertyOrThrow(O, k, { configurable: false });
|
|
});
|
|
} else if (level === 'frozen') {
|
|
forEach(theKeys, function (k) {
|
|
var currentDesc = $gOPD(O, k);
|
|
if (typeof currentDesc !== 'undefined') {
|
|
var desc;
|
|
if (ES.IsAccessorDescriptor(ES.ToPropertyDescriptor(currentDesc))) {
|
|
desc = { configurable: false };
|
|
} else {
|
|
desc = { configurable: false, writable: false };
|
|
}
|
|
ES.DefinePropertyOrThrow(O, k, desc);
|
|
}
|
|
});
|
|
}
|
|
return true;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-testintegritylevel
|
|
TestIntegrityLevel: function TestIntegrityLevel(O, level) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
if (level !== 'sealed' && level !== 'frozen') {
|
|
throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
|
|
}
|
|
var status = this.IsExtensible(O);
|
|
if (status) {
|
|
return false;
|
|
}
|
|
var theKeys = $gOPN(O);
|
|
var ES = this;
|
|
return theKeys.length === 0 || every(theKeys, function (k) {
|
|
var currentDesc = $gOPD(O, k);
|
|
if (typeof currentDesc !== 'undefined') {
|
|
if (currentDesc.configurable) {
|
|
return false;
|
|
}
|
|
if (level === 'frozen' && ES.IsDataDescriptor(ES.ToPropertyDescriptor(currentDesc)) && currentDesc.writable) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
});
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinaryhasinstance
|
|
OrdinaryHasInstance: function OrdinaryHasInstance(C, O) {
|
|
if (this.IsCallable(C) === false) {
|
|
return false;
|
|
}
|
|
if (this.Type(O) !== 'Object') {
|
|
return false;
|
|
}
|
|
var P = this.Get(C, 'prototype');
|
|
if (this.Type(P) !== 'Object') {
|
|
throw new $TypeError('OrdinaryHasInstance called on an object with an invalid prototype property.');
|
|
}
|
|
return O instanceof C;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinaryhasproperty
|
|
OrdinaryHasProperty: function OrdinaryHasProperty(O, P) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
if (!this.IsPropertyKey(P)) {
|
|
throw new $TypeError('Assertion failed: P must be a Property Key');
|
|
}
|
|
return P in O;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-instanceofoperator
|
|
InstanceofOperator: function InstanceofOperator(O, C) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
var instOfHandler = hasSymbols && $Symbol.hasInstance ? this.GetMethod(C, $Symbol.hasInstance) : void 0;
|
|
if (typeof instOfHandler !== 'undefined') {
|
|
return this.ToBoolean(this.Call(instOfHandler, C, [O]));
|
|
}
|
|
if (!this.IsCallable(C)) {
|
|
throw new $TypeError('`C` is not Callable');
|
|
}
|
|
return this.OrdinaryHasInstance(C, O);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-ispromise
|
|
IsPromise: function IsPromise(x) {
|
|
if (this.Type(x) !== 'Object') {
|
|
return false;
|
|
}
|
|
if (!$PromiseThen) { // Promises are not supported
|
|
return false;
|
|
}
|
|
try {
|
|
$PromiseThen(x); // throws if not a promise
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
return true;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-abstract-equality-comparison
|
|
'Abstract Equality Comparison': function AbstractEqualityComparison(x, y) {
|
|
var xType = this.Type(x);
|
|
var yType = this.Type(y);
|
|
if (xType === yType) {
|
|
return x === y; // ES6+ specified this shortcut anyways.
|
|
}
|
|
if (x == null && y == null) {
|
|
return true;
|
|
}
|
|
if (xType === 'Number' && yType === 'String') {
|
|
return this['Abstract Equality Comparison'](x, this.ToNumber(y));
|
|
}
|
|
if (xType === 'String' && yType === 'Number') {
|
|
return this['Abstract Equality Comparison'](this.ToNumber(x), y);
|
|
}
|
|
if (xType === 'Boolean') {
|
|
return this['Abstract Equality Comparison'](this.ToNumber(x), y);
|
|
}
|
|
if (yType === 'Boolean') {
|
|
return this['Abstract Equality Comparison'](x, this.ToNumber(y));
|
|
}
|
|
if ((xType === 'String' || xType === 'Number' || xType === 'Symbol') && yType === 'Object') {
|
|
return this['Abstract Equality Comparison'](x, this.ToPrimitive(y));
|
|
}
|
|
if (xType === 'Object' && (yType === 'String' || yType === 'Number' || yType === 'Symbol')) {
|
|
return this['Abstract Equality Comparison'](this.ToPrimitive(x), y);
|
|
}
|
|
return false;
|
|
},
|
|
|
|
// eslint-disable-next-line max-lines-per-function, max-statements, id-length, max-params
|
|
ValidateAndApplyPropertyDescriptor: function ValidateAndApplyPropertyDescriptor(O, P, extensible, Desc, current) {
|
|
// this uses the ES2017+ logic, since it fixes a number of bugs in the ES2015 logic.
|
|
var oType = this.Type(O);
|
|
if (oType !== 'Undefined' && oType !== 'Object') {
|
|
throw new $TypeError('Assertion failed: O must be undefined or an Object');
|
|
}
|
|
if (this.Type(extensible) !== 'Boolean') {
|
|
throw new $TypeError('Assertion failed: extensible must be a Boolean');
|
|
}
|
|
if (!isPropertyDescriptor(this, Desc)) {
|
|
throw new $TypeError('Assertion failed: Desc must be a Property Descriptor');
|
|
}
|
|
if (this.Type(current) !== 'Undefined' && !isPropertyDescriptor(this, current)) {
|
|
throw new $TypeError('Assertion failed: current must be a Property Descriptor, or undefined');
|
|
}
|
|
if (oType !== 'Undefined' && !this.IsPropertyKey(P)) {
|
|
throw new $TypeError('Assertion failed: if O is not undefined, P must be a Property Key');
|
|
}
|
|
if (this.Type(current) === 'Undefined') {
|
|
if (!extensible) {
|
|
return false;
|
|
}
|
|
if (this.IsGenericDescriptor(Desc) || this.IsDataDescriptor(Desc)) {
|
|
if (oType !== 'Undefined') {
|
|
DefineOwnProperty(this, O, P, {
|
|
'[[Configurable]]': Desc['[[Configurable]]'],
|
|
'[[Enumerable]]': Desc['[[Enumerable]]'],
|
|
'[[Value]]': Desc['[[Value]]'],
|
|
'[[Writable]]': Desc['[[Writable]]']
|
|
});
|
|
}
|
|
} else {
|
|
if (!this.IsAccessorDescriptor(Desc)) {
|
|
throw new $TypeError('Assertion failed: Desc is not an accessor descriptor');
|
|
}
|
|
if (oType !== 'Undefined') {
|
|
return DefineOwnProperty(this, O, P, Desc);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
if (this.IsGenericDescriptor(Desc) && !('[[Configurable]]' in Desc) && !('[[Enumerable]]' in Desc)) {
|
|
return true;
|
|
}
|
|
if (isSamePropertyDescriptor(this, Desc, current)) {
|
|
return true; // removed by ES2017, but should still be correct
|
|
}
|
|
// "if every field in Desc is absent, return true" can't really match the assertion that it's a Property Descriptor
|
|
if (!current['[[Configurable]]']) {
|
|
if (Desc['[[Configurable]]']) {
|
|
return false;
|
|
}
|
|
if ('[[Enumerable]]' in Desc && !Desc['[[Enumerable]]'] === !!current['[[Enumerable]]']) {
|
|
return false;
|
|
}
|
|
}
|
|
if (this.IsGenericDescriptor(Desc)) {
|
|
// no further validation is required.
|
|
} else if (this.IsDataDescriptor(current) !== this.IsDataDescriptor(Desc)) {
|
|
if (!current['[[Configurable]]']) {
|
|
return false;
|
|
}
|
|
if (this.IsDataDescriptor(current)) {
|
|
if (oType !== 'Undefined') {
|
|
DefineOwnProperty(this, O, P, {
|
|
'[[Configurable]]': current['[[Configurable]]'],
|
|
'[[Enumerable]]': current['[[Enumerable]]'],
|
|
'[[Get]]': undefined
|
|
});
|
|
}
|
|
} else if (oType !== 'Undefined') {
|
|
DefineOwnProperty(this, O, P, {
|
|
'[[Configurable]]': current['[[Configurable]]'],
|
|
'[[Enumerable]]': current['[[Enumerable]]'],
|
|
'[[Value]]': undefined
|
|
});
|
|
}
|
|
} else if (this.IsDataDescriptor(current) && this.IsDataDescriptor(Desc)) {
|
|
if (!current['[[Configurable]]'] && !current['[[Writable]]']) {
|
|
if ('[[Writable]]' in Desc && Desc['[[Writable]]']) {
|
|
return false;
|
|
}
|
|
if ('[[Value]]' in Desc && !this.SameValue(Desc['[[Value]]'], current['[[Value]]'])) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
} else if (this.IsAccessorDescriptor(current) && this.IsAccessorDescriptor(Desc)) {
|
|
if (!current['[[Configurable]]']) {
|
|
if ('[[Set]]' in Desc && !this.SameValue(Desc['[[Set]]'], current['[[Set]]'])) {
|
|
return false;
|
|
}
|
|
if ('[[Get]]' in Desc && !this.SameValue(Desc['[[Get]]'], current['[[Get]]'])) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
} else {
|
|
throw new $TypeError('Assertion failed: current and Desc are not both data, both accessors, or one accessor and one data.');
|
|
}
|
|
if (oType !== 'Undefined') {
|
|
return DefineOwnProperty(this, O, P, Desc);
|
|
}
|
|
return true;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinarydefineownproperty
|
|
OrdinaryDefineOwnProperty: function OrdinaryDefineOwnProperty(O, P, Desc) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: O must be an Object');
|
|
}
|
|
if (!this.IsPropertyKey(P)) {
|
|
throw new $TypeError('Assertion failed: P must be a Property Key');
|
|
}
|
|
if (!isPropertyDescriptor(this, Desc)) {
|
|
throw new $TypeError('Assertion failed: Desc must be a Property Descriptor');
|
|
}
|
|
var desc = $gOPD(O, P);
|
|
var current = desc && this.ToPropertyDescriptor(desc);
|
|
var extensible = this.IsExtensible(O);
|
|
return this.ValidateAndApplyPropertyDescriptor(O, P, extensible, Desc, current);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinarygetownproperty
|
|
OrdinaryGetOwnProperty: function OrdinaryGetOwnProperty(O, P) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: O must be an Object');
|
|
}
|
|
if (!this.IsPropertyKey(P)) {
|
|
throw new $TypeError('Assertion failed: P must be a Property Key');
|
|
}
|
|
if (!has(O, P)) {
|
|
return void 0;
|
|
}
|
|
if (!$gOPD) {
|
|
// ES3 fallback
|
|
var arrayLength = this.IsArray(O) && P === 'length';
|
|
var regexLastIndex = this.IsRegExp(O) && P === 'lastIndex';
|
|
return {
|
|
'[[Configurable]]': !(arrayLength || regexLastIndex),
|
|
'[[Enumerable]]': $isEnumerable(O, P),
|
|
'[[Value]]': O[P],
|
|
'[[Writable]]': true
|
|
};
|
|
}
|
|
return this.ToPropertyDescriptor($gOPD(O, P));
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-arraycreate
|
|
ArrayCreate: function ArrayCreate(length) {
|
|
if (!this.IsInteger(length) || length < 0) {
|
|
throw new $TypeError('Assertion failed: `length` must be an integer Number >= 0');
|
|
}
|
|
if (length > MAX_ARRAY_LENGTH) {
|
|
throw new $RangeError('length is greater than (2**32 - 1)');
|
|
}
|
|
var proto = arguments.length > 1 ? arguments[1] : $ArrayPrototype;
|
|
var A = []; // steps 5 - 7, and 9
|
|
if (proto !== $ArrayPrototype) { // step 8
|
|
if (!$setProto) {
|
|
throw new $SyntaxError('ArrayCreate: a `proto` argument that is not `Array.prototype` is not supported in an environment that does not support setting the [[Prototype]]');
|
|
}
|
|
$setProto(A, proto);
|
|
}
|
|
if (length !== 0) { // bypasses the need for step 2
|
|
A.length = length;
|
|
}
|
|
/* step 10, the above as a shortcut for the below
|
|
this.OrdinaryDefineOwnProperty(A, 'length', {
|
|
'[[Configurable]]': false,
|
|
'[[Enumerable]]': false,
|
|
'[[Value]]': length,
|
|
'[[Writable]]': true
|
|
});
|
|
*/
|
|
return A;
|
|
},
|
|
|
|
// eslint-disable-next-line max-statements, max-lines-per-function
|
|
ArraySetLength: function ArraySetLength(A, Desc) {
|
|
if (!this.IsArray(A)) {
|
|
throw new $TypeError('Assertion failed: A must be an Array');
|
|
}
|
|
if (!isPropertyDescriptor(this, Desc)) {
|
|
throw new $TypeError('Assertion failed: Desc must be a Property Descriptor');
|
|
}
|
|
if (!('[[Value]]' in Desc)) {
|
|
return this.OrdinaryDefineOwnProperty(A, 'length', Desc);
|
|
}
|
|
var newLenDesc = assign({}, Desc);
|
|
var newLen = this.ToUint32(Desc['[[Value]]']);
|
|
var numberLen = this.ToNumber(Desc['[[Value]]']);
|
|
if (newLen !== numberLen) {
|
|
throw new $RangeError('Invalid array length');
|
|
}
|
|
newLenDesc['[[Value]]'] = newLen;
|
|
var oldLenDesc = this.OrdinaryGetOwnProperty(A, 'length');
|
|
if (!this.IsDataDescriptor(oldLenDesc)) {
|
|
throw new $TypeError('Assertion failed: an array had a non-data descriptor on `length`');
|
|
}
|
|
var oldLen = oldLenDesc['[[Value]]'];
|
|
if (newLen >= oldLen) {
|
|
return this.OrdinaryDefineOwnProperty(A, 'length', newLenDesc);
|
|
}
|
|
if (!oldLenDesc['[[Writable]]']) {
|
|
return false;
|
|
}
|
|
var newWritable;
|
|
if (!('[[Writable]]' in newLenDesc) || newLenDesc['[[Writable]]']) {
|
|
newWritable = true;
|
|
} else {
|
|
newWritable = false;
|
|
newLenDesc['[[Writable]]'] = true;
|
|
}
|
|
var succeeded = this.OrdinaryDefineOwnProperty(A, 'length', newLenDesc);
|
|
if (!succeeded) {
|
|
return false;
|
|
}
|
|
while (newLen < oldLen) {
|
|
oldLen -= 1;
|
|
var deleteSucceeded = delete A[this.ToString(oldLen)];
|
|
if (!deleteSucceeded) {
|
|
newLenDesc['[[Value]]'] = oldLen + 1;
|
|
if (!newWritable) {
|
|
newLenDesc['[[Writable]]'] = false;
|
|
this.OrdinaryDefineOwnProperty(A, 'length', newLenDesc);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
if (!newWritable) {
|
|
return this.OrdinaryDefineOwnProperty(A, 'length', { '[[Writable]]': false });
|
|
}
|
|
return true;
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-createhtml
|
|
CreateHTML: function CreateHTML(string, tag, attribute, value) {
|
|
if (this.Type(tag) !== 'String' || this.Type(attribute) !== 'String') {
|
|
throw new $TypeError('Assertion failed: `tag` and `attribute` must be strings');
|
|
}
|
|
var str = this.RequireObjectCoercible(string);
|
|
var S = this.ToString(str);
|
|
var p1 = '<' + tag;
|
|
if (attribute !== '') {
|
|
var V = this.ToString(value);
|
|
var escapedV = $replace(V, /\x22/g, '"');
|
|
p1 += '\x20' + attribute + '\x3D\x22' + escapedV + '\x22';
|
|
}
|
|
return p1 + '>' + S + '</' + tag + '>';
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-getownpropertykeys
|
|
GetOwnPropertyKeys: function GetOwnPropertyKeys(O, Type) {
|
|
if (this.Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: Type(O) is not Object');
|
|
}
|
|
if (Type === 'Symbol') {
|
|
return hasSymbols && $gOPS ? $gOPS(O) : [];
|
|
}
|
|
if (Type === 'String') {
|
|
if (!$gOPN) {
|
|
return keys(O);
|
|
}
|
|
return $gOPN(O);
|
|
}
|
|
throw new $TypeError('Assertion failed: `Type` must be `"String"` or `"Symbol"`');
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-symboldescriptivestring
|
|
SymbolDescriptiveString: function SymbolDescriptiveString(sym) {
|
|
if (this.Type(sym) !== 'Symbol') {
|
|
throw new $TypeError('Assertion failed: `sym` must be a Symbol');
|
|
}
|
|
return $SymbolToString(sym);
|
|
},
|
|
|
|
// https://www.ecma-international.org/ecma-262/6.0/#sec-getsubstitution
|
|
// eslint-disable-next-line max-statements, max-params, max-lines-per-function
|
|
GetSubstitution: function GetSubstitution(matched, str, position, captures, replacement) {
|
|
if (this.Type(matched) !== 'String') {
|
|
throw new $TypeError('Assertion failed: `matched` must be a String');
|
|
}
|
|
var matchLength = matched.length;
|
|
|
|
if (this.Type(str) !== 'String') {
|
|
throw new $TypeError('Assertion failed: `str` must be a String');
|
|
}
|
|
var stringLength = str.length;
|
|
|
|
if (!this.IsInteger(position) || position < 0 || position > stringLength) {
|
|
throw new $TypeError('Assertion failed: `position` must be a nonnegative integer, and less than or equal to the length of `string`, got ' + inspect(position));
|
|
}
|
|
|
|
var ES = this;
|
|
var isStringOrHole = function (capture, index, arr) { return ES.Type(capture) === 'String' || !(index in arr); };
|
|
if (!this.IsArray(captures) || !every(captures, isStringOrHole)) {
|
|
throw new $TypeError('Assertion failed: `captures` must be a List of Strings, got ' + inspect(captures));
|
|
}
|
|
|
|
if (this.Type(replacement) !== 'String') {
|
|
throw new $TypeError('Assertion failed: `replacement` must be a String');
|
|
}
|
|
|
|
var tailPos = position + matchLength;
|
|
var m = captures.length;
|
|
|
|
var result = '';
|
|
for (var i = 0; i < replacement.length; i += 1) {
|
|
// if this is a $, and it's not the end of the replacement
|
|
var current = replacement[i];
|
|
var isLast = (i + 1) >= replacement.length;
|
|
var nextIsLast = (i + 2) >= replacement.length;
|
|
if (current === '$' && !isLast) {
|
|
var next = replacement[i + 1];
|
|
if (next === '$') {
|
|
result += '$';
|
|
i += 1;
|
|
} else if (next === '&') {
|
|
result += matched;
|
|
i += 1;
|
|
} else if (next === '`') {
|
|
result += position === 0 ? '' : strSlice(str, 0, position - 1);
|
|
i += 1;
|
|
} else if (next === "'") {
|
|
result += tailPos >= stringLength ? '' : strSlice(str, tailPos);
|
|
i += 1;
|
|
} else {
|
|
var nextNext = nextIsLast ? null : replacement[i + 2];
|
|
if (isDigit(next) && next !== '0' && (nextIsLast || !isDigit(nextNext))) {
|
|
// $1 through $9, and not followed by a digit
|
|
var n = parseInteger(next, 10);
|
|
// if (n > m, impl-defined)
|
|
result += (n <= m && this.Type(captures[n - 1]) === 'Undefined') ? '' : captures[n - 1];
|
|
i += 1;
|
|
} else if (isDigit(next) && (nextIsLast || isDigit(nextNext))) {
|
|
// $00 through $99
|
|
var nn = next + nextNext;
|
|
var nnI = parseInteger(nn, 10) - 1;
|
|
// if nn === '00' or nn > m, impl-defined
|
|
result += (nn <= m && this.Type(captures[nnI]) === 'Undefined') ? '' : captures[nnI];
|
|
i += 2;
|
|
} else {
|
|
result += '$';
|
|
}
|
|
}
|
|
} else {
|
|
// the final $, or else not a $
|
|
result += replacement[i];
|
|
}
|
|
}
|
|
return result;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-todatestring
|
|
ToDateString: function ToDateString(tv) {
|
|
if (this.Type(tv) !== 'Number') {
|
|
throw new $TypeError('Assertion failed: `tv` must be a Number');
|
|
}
|
|
if ($isNaN(tv)) {
|
|
return 'Invalid Date';
|
|
}
|
|
return $Date(tv);
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-createlistfromarraylike
|
|
CreateListFromArrayLike: function CreateListFromArrayLike(obj) {
|
|
var elementTypes = arguments.length > 1
|
|
? arguments[1]
|
|
: ['Undefined', 'Null', 'Boolean', 'String', 'Symbol', 'Number', 'Object'];
|
|
|
|
if (this.Type(obj) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: `obj` must be an Object');
|
|
}
|
|
if (!this.IsArray(elementTypes)) {
|
|
throw new $TypeError('Assertion failed: `elementTypes`, if provided, must be an array');
|
|
}
|
|
var len = this.ToLength(this.Get(obj, 'length'));
|
|
var list = [];
|
|
var index = 0;
|
|
while (index < len) {
|
|
var indexName = this.ToString(index);
|
|
var next = this.Get(obj, indexName);
|
|
var nextType = this.Type(next);
|
|
if ($indexOf(elementTypes, nextType) < 0) {
|
|
throw new $TypeError('item type ' + nextType + ' is not a valid elementType');
|
|
}
|
|
$push(list, next);
|
|
index += 1;
|
|
}
|
|
return list;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-getprototypefromconstructor
|
|
GetPrototypeFromConstructor: function GetPrototypeFromConstructor(constructor, intrinsicDefaultProto) {
|
|
var intrinsic = GetIntrinsic(intrinsicDefaultProto); // throws if not a valid intrinsic
|
|
if (!this.IsConstructor(constructor)) {
|
|
throw new $TypeError('Assertion failed: `constructor` must be a constructor');
|
|
}
|
|
var proto = this.Get(constructor, 'prototype');
|
|
if (this.Type(proto) !== 'Object') {
|
|
if (!(constructor instanceof $Function)) {
|
|
// ignore other realms, for now
|
|
throw new $TypeError('cross-realm constructors not currently supported');
|
|
}
|
|
proto = intrinsic;
|
|
}
|
|
return proto;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/6.0/#sec-setfunctionname
|
|
SetFunctionName: function SetFunctionName(F, name) {
|
|
if (typeof F !== 'function') {
|
|
throw new $TypeError('Assertion failed: `F` must be a function');
|
|
}
|
|
if (!this.IsExtensible(F) || has(F, 'name')) {
|
|
throw new $TypeError('Assertion failed: `F` must be extensible, and must not have a `name` own property');
|
|
}
|
|
var nameType = this.Type(name);
|
|
if (nameType !== 'Symbol' && nameType !== 'String') {
|
|
throw new $TypeError('Assertion failed: `name` must be a Symbol or a String');
|
|
}
|
|
if (nameType === 'Symbol') {
|
|
var description = getSymbolDescription(name);
|
|
// eslint-disable-next-line no-param-reassign
|
|
name = typeof description === 'undefined' ? '' : '[' + description + ']';
|
|
}
|
|
if (arguments.length > 2) {
|
|
var prefix = arguments[2];
|
|
// eslint-disable-next-line no-param-reassign
|
|
name = prefix + ' ' + name;
|
|
}
|
|
return this.DefinePropertyOrThrow(F, 'name', {
|
|
'[[Value]]': name,
|
|
'[[Writable]]': false,
|
|
'[[Enumerable]]': false,
|
|
'[[Configurable]]': true
|
|
});
|
|
}
|
|
});
|
|
|
|
delete ES6.CheckObjectCoercible; // renamed in ES6 to RequireObjectCoercible
|
|
|
|
module.exports = ES6;
|