| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| 'use strict'; |
| |
| // This file relies on the fact that the following declaration has been made |
| // in runtime.js: |
| // var $Array = global.Array; |
| |
| // ------------------------------------------------------------------- |
| |
| // ES6 draft 07-15-13, section 15.4.3.23 |
| function ArrayFind(predicate /* thisArg */) { // length == 1 |
| if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { |
| throw MakeTypeError("called_on_null_or_undefined", |
| ["Array.prototype.find"]); |
| } |
| |
| var array = ToObject(this); |
| var length = ToInteger(array.length); |
| |
| if (!IS_SPEC_FUNCTION(predicate)) { |
| throw MakeTypeError('called_non_callable', [predicate]); |
| } |
| |
| var thisArg; |
| if (%_ArgumentsLength() > 1) { |
| thisArg = %_Arguments(1); |
| } |
| |
| if (IS_NULL_OR_UNDEFINED(thisArg)) { |
| thisArg = %GetDefaultReceiver(predicate) || thisArg; |
| } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { |
| thisArg = ToObject(thisArg); |
| } |
| |
| for (var i = 0; i < length; i++) { |
| if (i in array) { |
| var element = array[i]; |
| if (%_CallFunction(thisArg, element, i, array, predicate)) { |
| return element; |
| } |
| } |
| } |
| |
| return; |
| } |
| |
| |
| // ES6 draft 07-15-13, section 15.4.3.24 |
| function ArrayFindIndex(predicate /* thisArg */) { // length == 1 |
| if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { |
| throw MakeTypeError("called_on_null_or_undefined", |
| ["Array.prototype.findIndex"]); |
| } |
| |
| var array = ToObject(this); |
| var length = ToInteger(array.length); |
| |
| if (!IS_SPEC_FUNCTION(predicate)) { |
| throw MakeTypeError('called_non_callable', [predicate]); |
| } |
| |
| var thisArg; |
| if (%_ArgumentsLength() > 1) { |
| thisArg = %_Arguments(1); |
| } |
| |
| if (IS_NULL_OR_UNDEFINED(thisArg)) { |
| thisArg = %GetDefaultReceiver(predicate) || thisArg; |
| } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { |
| thisArg = ToObject(thisArg); |
| } |
| |
| for (var i = 0; i < length; i++) { |
| if (i in array) { |
| var element = array[i]; |
| if (%_CallFunction(thisArg, element, i, array, predicate)) { |
| return i; |
| } |
| } |
| } |
| |
| return -1; |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| |
| function HarmonyArrayExtendArrayPrototype() { |
| %CheckIsBootstrapping(); |
| |
| // Set up the non-enumerable functions on the Array prototype object. |
| InstallFunctions($Array.prototype, DONT_ENUM, $Array( |
| "find", ArrayFind, |
| "findIndex", ArrayFindIndex |
| )); |
| } |
| |
| HarmonyArrayExtendArrayPrototype(); |