| OLD | NEW |
| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 | 27 |
| 28 // The test verifies that parameters of the outer function are correctly | 28 // The test verifies that parameters of the outer function are correctly |
| 29 // accessible from the inner closure. | 29 // accessible from the inner closure. |
| 30 | 30 |
| 31 function runner(f, expected) { | 31 function runner(f, expected) { |
| 32 for (var i = 0; i < 10000; i++) { // Loop to trigger optimization. | 32 for (var i = 0; i < 10000; i++) { // Loop to trigger optimization. |
| 33 assertEquals(expected, f.call(this, 10)); | 33 assertEquals(expected, f.call(this, 10)); |
| 34 } | 34 } |
| 35 } | 35 } |
| 36 | 36 |
| 37 Function.prototype.bind = function(thisObject) | 37 Function.prototype.bind = function(thisObject) { |
| 38 { | 38 var func = this; |
| 39 var func = this; | 39 var args = Array.prototype.slice.call(arguments, 1); |
| 40 var args = Array.prototype.slice.call(arguments, 1); | 40 function bound() { |
| 41 function bound() | 41 // Note outer function parameter access (|thisObject|). |
| 42 { | 42 return func.apply( |
| 43 // Note outer function parameter access (|thisObject|). | 43 thisObject, |
| 44 return func.apply( | 44 args.concat(Array.prototype.slice.call(arguments, 0))); |
| 45 thisObject, | 45 } |
| 46 args.concat(Array.prototype.slice.call(arguments, 0))); | 46 return bound; |
| 47 } | 47 }; |
| 48 return bound; | |
| 49 } | |
| 50 | 48 |
| 51 function sum(x, y) { | 49 function sum(x, y) { |
| 52 return x + y; | 50 return x + y; |
| 53 } | 51 } |
| 54 | 52 |
| 55 function test(n) { | 53 function test(n) { |
| 56 runner(sum.bind(this, n), n + 10); | 54 runner(sum.bind(this, n), n + 10); |
| 57 } | 55 } |
| 58 | 56 |
| 59 test(1); | 57 test(1); |
| 60 test(42); | 58 test(42); |
| 61 test(239); | 59 test(239); |
| OLD | NEW |