danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 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 |
| 37 | function 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 |
| 75 | function 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 | |
| 114 | function 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 | |
| 124 | HarmonyArrayExtendArrayPrototype(); |