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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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 // Flags: --expose-debug-as debug | 5 // Flags: --expose-debug-as debug |
6 | 6 |
7 Debug = debug.Debug | 7 Debug = debug.Debug |
8 | 8 |
9 var exception = null; | 9 var exception = null; |
10 var break_count = 0; | 10 var break_count = 0; |
11 | 11 |
12 function listener(event, exec_state, event_data, data) { | 12 function listener(event, exec_state, event_data, data) { |
13 if (event != Debug.DebugEvent.Break) return; | 13 if (event != Debug.DebugEvent.Break) return; |
14 try { | 14 try { |
15 print(event_data.sourceLineText()); | 15 print(event_data.sourceLineText()); |
16 assertTrue( | 16 assertTrue( |
17 event_data.sourceLineText().indexOf(`Break ${break_count++}.`) > 0); | 17 event_data.sourceLineText().indexOf(`Break ${break_count++}.`) > 0); |
18 exec_state.prepareStep(Debug.StepAction.StepIn, 1); | 18 exec_state.prepareStep(Debug.StepAction.StepIn); |
19 } catch (e) { | 19 } catch (e) { |
20 exception = e; | 20 exception = e; |
21 } | 21 } |
22 }; | 22 }; |
23 | 23 |
24 function replaceCallback(a) { | 24 function replaceCallback(a) { |
25 return "x"; // Break 2. | 25 return "x"; // Break 2. |
26 } // Break 3. | 26 } // Break 3. |
27 | 27 |
28 var re = /x/g; | 28 var re = /x/g; |
29 // Optimize the inner helper function for string replace. | 29 // Optimize the inner helper function for string replace. |
30 for (var i = 0; i < 10000; i++) "x".replace(re, replaceCallback); | 30 for (var i = 0; i < 10000; i++) "x".replace(re, replaceCallback); |
31 | 31 |
32 Debug.setListener(listener); | 32 Debug.setListener(listener); |
33 debugger; // Break 0. | 33 debugger; // Break 0. |
34 var result = "x".replace(re, replaceCallback); // Break 1. | 34 var result = "x".replace(re, replaceCallback); // Break 1. |
35 Debug.setListener(null); // Break 4. | 35 Debug.setListener(null); // Break 4. |
36 | 36 |
37 assertNull(exception); | 37 assertNull(exception); |
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