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Side by Side Diff: src/harmony-array-includes.js

Issue 1123353004: Revert of Wrap runtime.js in a function. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 7 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 (function() { 5 (function() {
6 6
7 'use strict'; 7 'use strict';
8 8
9 %CheckIsBootstrapping(); 9 %CheckIsBootstrapping();
10 10
11 var GlobalArray = global.Array; 11 var GlobalArray = global.Array;
12 12
13 // ------------------------------------------------------------------- 13 // -------------------------------------------------------------------
14 14
15 // Proposed for ES7 15 // Proposed for ES7
16 // https://github.com/tc39/Array.prototype.includes 16 // https://github.com/tc39/Array.prototype.includes
17 // 6e3b78c927aeda20b9d40e81303f9d44596cd904 17 // 6e3b78c927aeda20b9d40e81303f9d44596cd904
18 function ArrayIncludes(searchElement, fromIndex) { 18 function ArrayIncludes(searchElement, fromIndex) {
19 var array = $toObject(this); 19 var array = ToObject(this);
20 var len = $toLength(array.length); 20 var len = ToLength(array.length);
21 21
22 if (len === 0) { 22 if (len === 0) {
23 return false; 23 return false;
24 } 24 }
25 25
26 var n = $toInteger(fromIndex); 26 var n = ToInteger(fromIndex);
27 27
28 var k; 28 var k;
29 if (n >= 0) { 29 if (n >= 0) {
30 k = n; 30 k = n;
31 } else { 31 } else {
32 k = len + n; 32 k = len + n;
33 if (k < 0) { 33 if (k < 0) {
34 k = 0; 34 k = 0;
35 } 35 }
36 } 36 }
37 37
38 while (k < len) { 38 while (k < len) {
39 var elementK = array[k]; 39 var elementK = array[k];
40 if ($sameValueZero(searchElement, elementK)) { 40 if (SameValueZero(searchElement, elementK)) {
41 return true; 41 return true;
42 } 42 }
43 43
44 ++k; 44 ++k;
45 } 45 }
46 46
47 return false; 47 return false;
48 } 48 }
49 49
50 // ------------------------------------------------------------------- 50 // -------------------------------------------------------------------
51 51
52 %FunctionSetLength(ArrayIncludes, 1); 52 %FunctionSetLength(ArrayIncludes, 1);
53 53
54 // Set up the non-enumerable functions on the Array prototype object. 54 // Set up the non-enumerable functions on the Array prototype object.
55 $installFunctions(GlobalArray.prototype, DONT_ENUM, [ 55 $installFunctions(GlobalArray.prototype, DONT_ENUM, [
56 "includes", ArrayIncludes 56 "includes", ArrayIncludes
57 ]); 57 ]);
58 58
59 })(); 59 })();
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