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1 // Copyright 2016 the V8 project authors. All rights reserved. | 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 | 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: --ignition --expose-debug-as debug | 5 // Flags: --ignition --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 var column = event_data.sourceColumn(); | 16 var column = event_data.sourceColumn(); |
17 assertTrue(event_data.sourceLineText().indexOf( | 17 assertTrue(event_data.sourceLineText().indexOf( |
18 `Break ${break_count++}. ${column}.`) > 0); | 18 `Break ${break_count++}. ${column}.`) > 0); |
19 exec_state.prepareStep(Debug.StepAction.StepIn); | 19 exec_state.prepareStep(Debug.StepAction.StepIn); |
20 } catch (e) { | 20 } catch (e) { |
21 print(e + e.stack); | 21 print(e + e.stack); |
22 exception = e; | 22 exception = e; |
23 } | 23 } |
24 }; | 24 }; |
25 | 25 |
26 function f() { | 26 function f() { |
27 var a = 1; // Break 2. 10. | 27 var a = 1; // Break 2. 10. |
28 // This return statement emits no bytecode instruction for the evaluation of | 28 return a; // Break 3. 2. |
29 // the to-be-returned expression. Therefore we cannot set a break location | 29 } // Break 4. 0. |
30 // before the statement and a second break location immediately before | 30 |
31 // returning to the caller. | |
32 return a; | |
33 } // Break 3. 0. | |
34 | 31 |
35 Debug.setListener(listener); | 32 Debug.setListener(listener); |
36 debugger; // Break 0. 0. | 33 debugger; // Break 0. 0. |
37 f(); // Break 1. 0. | 34 f(); // Break 1. 0. |
38 Debug.setListener(null); // Break 4. 0. | 35 Debug.setListener(null); // Break 5. 0. |
39 | 36 |
40 assertNull(exception); | 37 assertNull(exception); |
41 assertEquals(5, break_count); | 38 assertEquals(6, break_count); |
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