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544 lines
15 KiB
544 lines
15 KiB
'use strict';
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var GetIntrinsic = require('./GetIntrinsic');
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var $Object = GetIntrinsic('%Object%');
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var $EvalError = GetIntrinsic('%EvalError%');
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var $TypeError = GetIntrinsic('%TypeError%');
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var $String = GetIntrinsic('%String%');
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var $Date = GetIntrinsic('%Date%');
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var $Number = GetIntrinsic('%Number%');
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var $floor = GetIntrinsic('%Math.floor%');
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var $DateUTC = GetIntrinsic('%Date.UTC%');
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var $abs = GetIntrinsic('%Math.abs%');
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var assertRecord = require('./helpers/assertRecord');
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var isPropertyDescriptor = require('./helpers/isPropertyDescriptor');
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var $isNaN = require('./helpers/isNaN');
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var $isFinite = require('./helpers/isFinite');
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var sign = require('./helpers/sign');
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var mod = require('./helpers/mod');
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var isPrefixOf = require('./helpers/isPrefixOf');
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var callBound = require('./helpers/callBound');
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var IsCallable = require('is-callable');
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var toPrimitive = require('es-to-primitive/es5');
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var has = require('has');
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var $getUTCFullYear = callBound('Date.prototype.getUTCFullYear');
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var HoursPerDay = 24;
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var MinutesPerHour = 60;
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var SecondsPerMinute = 60;
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var msPerSecond = 1e3;
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var msPerMinute = msPerSecond * SecondsPerMinute;
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var msPerHour = msPerMinute * MinutesPerHour;
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var msPerDay = 86400000;
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// https://es5.github.io/#x9
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var ES5 = {
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ToPrimitive: toPrimitive,
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ToBoolean: function ToBoolean(value) {
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return !!value;
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},
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ToNumber: function ToNumber(value) {
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return +value; // eslint-disable-line no-implicit-coercion
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},
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ToInteger: function ToInteger(value) {
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var number = this.ToNumber(value);
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if ($isNaN(number)) { return 0; }
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if (number === 0 || !$isFinite(number)) { return number; }
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return sign(number) * Math.floor(Math.abs(number));
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},
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ToInt32: function ToInt32(x) {
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return this.ToNumber(x) >> 0;
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},
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ToUint32: function ToUint32(x) {
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return this.ToNumber(x) >>> 0;
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},
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ToUint16: function ToUint16(value) {
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var number = this.ToNumber(value);
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if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
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var posInt = sign(number) * Math.floor(Math.abs(number));
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return mod(posInt, 0x10000);
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},
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ToString: function ToString(value) {
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return $String(value);
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},
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ToObject: function ToObject(value) {
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this.CheckObjectCoercible(value);
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return $Object(value);
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},
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CheckObjectCoercible: function CheckObjectCoercible(value, optMessage) {
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/* jshint eqnull:true */
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if (value == null) {
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throw new $TypeError(optMessage || 'Cannot call method on ' + value);
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}
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return value;
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},
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IsCallable: IsCallable,
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SameValue: function SameValue(x, y) {
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if (x === y) { // 0 === -0, but they are not identical.
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if (x === 0) { return 1 / x === 1 / y; }
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return true;
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}
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return $isNaN(x) && $isNaN(y);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8
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Type: function Type(x) {
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if (x === null) {
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return 'Null';
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}
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if (typeof x === 'undefined') {
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return 'Undefined';
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}
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if (typeof x === 'function' || typeof x === 'object') {
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return 'Object';
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}
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if (typeof x === 'number') {
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return 'Number';
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}
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if (typeof x === 'boolean') {
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return 'Boolean';
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}
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if (typeof x === 'string') {
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return 'String';
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}
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},
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// https://ecma-international.org/ecma-262/6.0/#sec-property-descriptor-specification-type
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IsPropertyDescriptor: function IsPropertyDescriptor(Desc) {
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return isPropertyDescriptor(this, Desc);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.1
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IsAccessorDescriptor: function IsAccessorDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return false;
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}
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assertRecord(this, 'Property Descriptor', 'Desc', Desc);
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if (!has(Desc, '[[Get]]') && !has(Desc, '[[Set]]')) {
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return false;
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}
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return true;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.2
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IsDataDescriptor: function IsDataDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return false;
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}
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assertRecord(this, 'Property Descriptor', 'Desc', Desc);
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if (!has(Desc, '[[Value]]') && !has(Desc, '[[Writable]]')) {
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return false;
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}
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return true;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.3
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IsGenericDescriptor: function IsGenericDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return false;
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}
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assertRecord(this, 'Property Descriptor', 'Desc', Desc);
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if (!this.IsAccessorDescriptor(Desc) && !this.IsDataDescriptor(Desc)) {
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return true;
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}
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return false;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.4
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FromPropertyDescriptor: function FromPropertyDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return Desc;
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}
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assertRecord(this, 'Property Descriptor', 'Desc', Desc);
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if (this.IsDataDescriptor(Desc)) {
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return {
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value: Desc['[[Value]]'],
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writable: !!Desc['[[Writable]]'],
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enumerable: !!Desc['[[Enumerable]]'],
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configurable: !!Desc['[[Configurable]]']
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};
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} else if (this.IsAccessorDescriptor(Desc)) {
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return {
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get: Desc['[[Get]]'],
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set: Desc['[[Set]]'],
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enumerable: !!Desc['[[Enumerable]]'],
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configurable: !!Desc['[[Configurable]]']
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};
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} else {
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throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor');
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}
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.5
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ToPropertyDescriptor: function ToPropertyDescriptor(Obj) {
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if (this.Type(Obj) !== 'Object') {
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throw new $TypeError('ToPropertyDescriptor requires an object');
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}
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var desc = {};
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if (has(Obj, 'enumerable')) {
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desc['[[Enumerable]]'] = this.ToBoolean(Obj.enumerable);
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}
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if (has(Obj, 'configurable')) {
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desc['[[Configurable]]'] = this.ToBoolean(Obj.configurable);
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}
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if (has(Obj, 'value')) {
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desc['[[Value]]'] = Obj.value;
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}
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if (has(Obj, 'writable')) {
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desc['[[Writable]]'] = this.ToBoolean(Obj.writable);
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}
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if (has(Obj, 'get')) {
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var getter = Obj.get;
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if (typeof getter !== 'undefined' && !this.IsCallable(getter)) {
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throw new TypeError('getter must be a function');
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}
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desc['[[Get]]'] = getter;
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}
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if (has(Obj, 'set')) {
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var setter = Obj.set;
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if (typeof setter !== 'undefined' && !this.IsCallable(setter)) {
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throw new $TypeError('setter must be a function');
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}
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desc['[[Set]]'] = setter;
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}
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if ((has(desc, '[[Get]]') || has(desc, '[[Set]]')) && (has(desc, '[[Value]]') || has(desc, '[[Writable]]'))) {
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throw new $TypeError('Invalid property descriptor. Cannot both specify accessors and a value or writable attribute');
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}
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return desc;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-11.9.3
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'Abstract Equality Comparison': function AbstractEqualityComparison(x, y) {
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var xType = this.Type(x);
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var yType = this.Type(y);
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if (xType === yType) {
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return x === y; // ES6+ specified this shortcut anyways.
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}
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if (x == null && y == null) {
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return true;
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}
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if (xType === 'Number' && yType === 'String') {
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return this['Abstract Equality Comparison'](x, this.ToNumber(y));
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}
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if (xType === 'String' && yType === 'Number') {
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return this['Abstract Equality Comparison'](this.ToNumber(x), y);
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}
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if (xType === 'Boolean') {
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return this['Abstract Equality Comparison'](this.ToNumber(x), y);
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}
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if (yType === 'Boolean') {
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return this['Abstract Equality Comparison'](x, this.ToNumber(y));
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}
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if ((xType === 'String' || xType === 'Number') && yType === 'Object') {
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return this['Abstract Equality Comparison'](x, this.ToPrimitive(y));
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}
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if (xType === 'Object' && (yType === 'String' || yType === 'Number')) {
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return this['Abstract Equality Comparison'](this.ToPrimitive(x), y);
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}
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return false;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-11.9.6
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'Strict Equality Comparison': function StrictEqualityComparison(x, y) {
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var xType = this.Type(x);
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var yType = this.Type(y);
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if (xType !== yType) {
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return false;
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}
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if (xType === 'Undefined' || xType === 'Null') {
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return true;
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}
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return x === y; // shortcut for steps 4-7
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-11.8.5
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// eslint-disable-next-line max-statements
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'Abstract Relational Comparison': function AbstractRelationalComparison(x, y, LeftFirst) {
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if (this.Type(LeftFirst) !== 'Boolean') {
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throw new $TypeError('Assertion failed: LeftFirst argument must be a Boolean');
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}
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var px;
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var py;
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if (LeftFirst) {
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px = this.ToPrimitive(x, $Number);
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py = this.ToPrimitive(y, $Number);
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} else {
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py = this.ToPrimitive(y, $Number);
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px = this.ToPrimitive(x, $Number);
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}
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var bothStrings = this.Type(px) === 'String' && this.Type(py) === 'String';
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if (!bothStrings) {
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var nx = this.ToNumber(px);
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var ny = this.ToNumber(py);
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if ($isNaN(nx) || $isNaN(ny)) {
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return undefined;
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}
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if ($isFinite(nx) && $isFinite(ny) && nx === ny) {
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return false;
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}
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if (nx === 0 && ny === 0) {
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return false;
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}
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if (nx === Infinity) {
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return false;
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}
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if (ny === Infinity) {
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return true;
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}
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if (ny === -Infinity) {
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return false;
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}
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if (nx === -Infinity) {
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return true;
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}
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return nx < ny; // by now, these are both nonzero, finite, and not equal
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}
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if (isPrefixOf(py, px)) {
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return false;
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}
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if (isPrefixOf(px, py)) {
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return true;
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}
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return px < py; // both strings, neither a prefix of the other. shortcut for steps c-f
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.10
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msFromTime: function msFromTime(t) {
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return mod(t, msPerSecond);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.10
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SecFromTime: function SecFromTime(t) {
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return mod($floor(t / msPerSecond), SecondsPerMinute);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.10
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MinFromTime: function MinFromTime(t) {
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return mod($floor(t / msPerMinute), MinutesPerHour);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.10
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HourFromTime: function HourFromTime(t) {
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return mod($floor(t / msPerHour), HoursPerDay);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.2
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Day: function Day(t) {
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return $floor(t / msPerDay);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.2
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TimeWithinDay: function TimeWithinDay(t) {
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return mod(t, msPerDay);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
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DayFromYear: function DayFromYear(y) {
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return (365 * (y - 1970)) + $floor((y - 1969) / 4) - $floor((y - 1901) / 100) + $floor((y - 1601) / 400);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
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TimeFromYear: function TimeFromYear(y) {
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return msPerDay * this.DayFromYear(y);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
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YearFromTime: function YearFromTime(t) {
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// largest y such that this.TimeFromYear(y) <= t
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return $getUTCFullYear(new $Date(t));
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.6
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WeekDay: function WeekDay(t) {
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return mod(this.Day(t) + 4, 7);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
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DaysInYear: function DaysInYear(y) {
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if (mod(y, 4) !== 0) {
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return 365;
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}
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if (mod(y, 100) !== 0) {
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return 366;
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}
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if (mod(y, 400) !== 0) {
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return 365;
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}
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return 366;
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
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InLeapYear: function InLeapYear(t) {
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var days = this.DaysInYear(this.YearFromTime(t));
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if (days === 365) {
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return 0;
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}
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if (days === 366) {
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return 1;
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}
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throw new $EvalError('Assertion failed: there are not 365 or 366 days in a year, got: ' + days);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.4
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DayWithinYear: function DayWithinYear(t) {
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return this.Day(t) - this.DayFromYear(this.YearFromTime(t));
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.4
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MonthFromTime: function MonthFromTime(t) {
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var day = this.DayWithinYear(t);
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if (0 <= day && day < 31) {
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return 0;
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}
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var leap = this.InLeapYear(t);
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if (31 <= day && day < (59 + leap)) {
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return 1;
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}
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if ((59 + leap) <= day && day < (90 + leap)) {
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return 2;
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}
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if ((90 + leap) <= day && day < (120 + leap)) {
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return 3;
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}
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if ((120 + leap) <= day && day < (151 + leap)) {
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return 4;
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}
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if ((151 + leap) <= day && day < (181 + leap)) {
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return 5;
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}
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if ((181 + leap) <= day && day < (212 + leap)) {
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return 6;
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}
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if ((212 + leap) <= day && day < (243 + leap)) {
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return 7;
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}
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if ((243 + leap) <= day && day < (273 + leap)) {
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return 8;
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}
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if ((273 + leap) <= day && day < (304 + leap)) {
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return 9;
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}
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if ((304 + leap) <= day && day < (334 + leap)) {
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return 10;
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}
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if ((334 + leap) <= day && day < (365 + leap)) {
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return 11;
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}
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.5
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DateFromTime: function DateFromTime(t) {
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var m = this.MonthFromTime(t);
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var d = this.DayWithinYear(t);
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if (m === 0) {
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return d + 1;
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}
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if (m === 1) {
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return d - 30;
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}
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var leap = this.InLeapYear(t);
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if (m === 2) {
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return d - 58 - leap;
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}
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if (m === 3) {
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return d - 89 - leap;
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}
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if (m === 4) {
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return d - 119 - leap;
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}
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if (m === 5) {
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return d - 150 - leap;
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}
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if (m === 6) {
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return d - 180 - leap;
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}
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if (m === 7) {
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return d - 211 - leap;
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}
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if (m === 8) {
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return d - 242 - leap;
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}
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if (m === 9) {
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return d - 272 - leap;
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}
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if (m === 10) {
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return d - 303 - leap;
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}
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if (m === 11) {
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return d - 333 - leap;
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}
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throw new $EvalError('Assertion failed: MonthFromTime returned an impossible value: ' + m);
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},
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.12
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MakeDay: function MakeDay(year, month, date) {
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if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) {
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return NaN;
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}
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var y = this.ToInteger(year);
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var m = this.ToInteger(month);
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var dt = this.ToInteger(date);
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var ym = y + $floor(m / 12);
|
|
var mn = mod(m, 12);
|
|
var t = $DateUTC(ym, mn, 1);
|
|
if (this.YearFromTime(t) !== ym || this.MonthFromTime(t) !== mn || this.DateFromTime(t) !== 1) {
|
|
return NaN;
|
|
}
|
|
return this.Day(t) + dt - 1;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.13
|
|
MakeDate: function MakeDate(day, time) {
|
|
if (!$isFinite(day) || !$isFinite(time)) {
|
|
return NaN;
|
|
}
|
|
return (day * msPerDay) + time;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.11
|
|
MakeTime: function MakeTime(hour, min, sec, ms) {
|
|
if (!$isFinite(hour) || !$isFinite(min) || !$isFinite(sec) || !$isFinite(ms)) {
|
|
return NaN;
|
|
}
|
|
var h = this.ToInteger(hour);
|
|
var m = this.ToInteger(min);
|
|
var s = this.ToInteger(sec);
|
|
var milli = this.ToInteger(ms);
|
|
var t = (h * msPerHour) + (m * msPerMinute) + (s * msPerSecond) + milli;
|
|
return t;
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.14
|
|
TimeClip: function TimeClip(time) {
|
|
if (!$isFinite(time) || $abs(time) > 8.64e15) {
|
|
return NaN;
|
|
}
|
|
return $Number(new $Date(this.ToNumber(time)));
|
|
},
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-5.2
|
|
modulo: function modulo(x, y) {
|
|
return mod(x, y);
|
|
}
|
|
};
|
|
|
|
module.exports = ES5;
|