1// Copyright 2013 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28'use strict'; 29 30// This file relies on the fact that the following declaration has been made 31// in runtime.js: 32// var $Array = global.Array; 33 34// ------------------------------------------------------------------- 35 36// ES6 draft 07-15-13, section 15.4.3.23 37function ArrayFind(predicate /* thisArg */) { // length == 1 38 if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { 39 throw MakeTypeError("called_on_null_or_undefined", 40 ["Array.prototype.find"]); 41 } 42 43 var array = ToObject(this); 44 var length = ToInteger(array.length); 45 46 if (!IS_SPEC_FUNCTION(predicate)) { 47 throw MakeTypeError('called_non_callable', [predicate]); 48 } 49 50 var thisArg; 51 if (%_ArgumentsLength() > 1) { 52 thisArg = %_Arguments(1); 53 } 54 55 if (IS_NULL_OR_UNDEFINED(thisArg)) { 56 thisArg = %GetDefaultReceiver(predicate) || thisArg; 57 } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { 58 thisArg = ToObject(thisArg); 59 } 60 61 for (var i = 0; i < length; i++) { 62 if (i in array) { 63 var element = array[i]; 64 if (%_CallFunction(thisArg, element, i, array, predicate)) { 65 return element; 66 } 67 } 68 } 69 70 return; 71} 72 73 74// ES6 draft 07-15-13, section 15.4.3.24 75function ArrayFindIndex(predicate /* thisArg */) { // length == 1 76 if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { 77 throw MakeTypeError("called_on_null_or_undefined", 78 ["Array.prototype.findIndex"]); 79 } 80 81 var array = ToObject(this); 82 var length = ToInteger(array.length); 83 84 if (!IS_SPEC_FUNCTION(predicate)) { 85 throw MakeTypeError('called_non_callable', [predicate]); 86 } 87 88 var thisArg; 89 if (%_ArgumentsLength() > 1) { 90 thisArg = %_Arguments(1); 91 } 92 93 if (IS_NULL_OR_UNDEFINED(thisArg)) { 94 thisArg = %GetDefaultReceiver(predicate) || thisArg; 95 } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { 96 thisArg = ToObject(thisArg); 97 } 98 99 for (var i = 0; i < length; i++) { 100 if (i in array) { 101 var element = array[i]; 102 if (%_CallFunction(thisArg, element, i, array, predicate)) { 103 return i; 104 } 105 } 106 } 107 108 return -1; 109} 110 111 112// ------------------------------------------------------------------- 113 114function HarmonyArrayExtendArrayPrototype() { 115 %CheckIsBootstrapping(); 116 117 // Set up the non-enumerable functions on the Array prototype object. 118 InstallFunctions($Array.prototype, DONT_ENUM, $Array( 119 "find", ArrayFind, 120 "findIndex", ArrayFindIndex 121 )); 122} 123 124HarmonyArrayExtendArrayPrototype();