Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | // |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | |
| 6 | // In sloppy mode we allow function redeclarations within blocks for webcompat. |
| 7 | (function() { |
| 8 | assertEquals(undefined, f); // Annex B |
| 9 | if (true) { |
| 10 | assertEquals(2, f()); |
| 11 | function f() { return 1 } |
| 12 | assertEquals(2, f()); |
| 13 | function f() { return 2 } |
| 14 | assertEquals(2, f()); |
| 15 | } |
| 16 | assertEquals(2, f()); // Annex B |
| 17 | })(); |
| 18 | |
| 19 | // Should still fail in strict mode |
| 20 | assertThrows(` |
| 21 | (function() { |
| 22 | "use strict"; |
| 23 | if (true) { |
| 24 | function f() { return 1 } |
| 25 | function f() { return 2 } |
| 26 | } |
| 27 | })(); |
| 28 | `, SyntaxError); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 29 | |
| 30 | // Conflicts between let and function still throw |
| 31 | assertThrows(` |
| 32 | (function() { |
| 33 | if (true) { |
| 34 | let f; |
| 35 | function f() { return 2 } |
| 36 | } |
| 37 | })(); |
| 38 | `, SyntaxError); |
| 39 | |
| 40 | assertThrows(` |
| 41 | (function() { |
| 42 | if (true) { |
| 43 | function f() { return 2 } |
| 44 | let f; |
| 45 | } |
| 46 | })(); |
| 47 | `, SyntaxError); |
| 48 | |
| 49 | // Conflicts between const and function still throw |
| 50 | assertThrows(` |
| 51 | (function() { |
| 52 | if (true) { |
| 53 | const f; |
| 54 | function f() { return 2 } |
| 55 | } |
| 56 | })(); |
| 57 | `, SyntaxError); |
| 58 | |
| 59 | assertThrows(` |
| 60 | (function() { |
| 61 | if (true) { |
| 62 | function f() { return 2 } |
| 63 | const f; |
| 64 | } |
| 65 | })(); |
| 66 | `, SyntaxError); |
| 67 | |
| 68 | // Annex B redefinition semantics still apply with more blocks |
| 69 | (function() { |
| 70 | assertEquals(undefined, f); // Annex B |
| 71 | if (true) { |
| 72 | assertEquals(undefined, f); |
| 73 | { function f() { return 1 } } |
| 74 | assertEquals(1, f()); |
| 75 | { function f() { return 2 } } |
| 76 | assertEquals(2, f()); |
| 77 | } |
| 78 | assertEquals(2, f()); // Annex B |
| 79 | })(); |