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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 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 |
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30 Debug = debug.Debug | 30 Debug = debug.Debug |
31 | 31 |
32 // Simple debug event handler which first time hit will perform 1000 steps and | 32 // Simple debug event handler which first time hit will perform 1000 steps and |
33 // second time hit will evaluate and store the value of "i". If requires that | 33 // second time hit will evaluate and store the value of "i". If requires that |
34 // the global property "state" is initially zero. | 34 // the global property "state" is initially zero. |
35 | 35 |
36 var bp1, bp2; | 36 var bp1, bp2; |
37 | 37 |
38 function listener(event, exec_state, event_data, data) { | 38 function listener(event, exec_state, event_data, data) { |
39 if (event == Debug.DebugEvent.Break) { | 39 if (event == Debug.DebugEvent.Break) { |
40 if (state == 0) { | 40 if (step_count > 0) { |
41 exec_state.prepareStep(Debug.StepAction.StepIn, 1000); | 41 exec_state.prepareStep(Debug.StepAction.StepIn); |
42 state = 1; | 42 step_count--; |
43 } else if (state == 1) { | 43 } else { |
44 result = exec_state.frame().evaluate("i").value(); | 44 result = exec_state.frame().evaluate("i").value(); |
45 // Clear the break point on line 2 if set. | 45 // Clear the break point on line 2 if set. |
46 if (bp2) { | 46 if (bp2) { |
47 Debug.clearBreakPoint(bp2); | 47 Debug.clearBreakPoint(bp2); |
48 } | 48 } |
49 } | 49 } |
50 } | 50 } |
51 }; | 51 }; |
52 | 52 |
53 // Add the debug event listener. | 53 // Add the debug event listener. |
54 Debug.setListener(listener); | 54 Debug.setListener(listener); |
55 | 55 |
56 // Test debug event for break point. | 56 // Test debug event for break point. |
57 function f() { | 57 function f() { |
58 var i; // Line 1. | 58 var i; // Line 1. |
59 for (i = 0; i < 1000; i++) { // Line 2. | 59 for (i = 0; i < 1000; i++) { // Line 2. |
60 x = 1; // Line 3. | 60 x = 1; // Line 3. |
61 } | 61 } |
62 }; | 62 }; |
63 | 63 |
64 // Set a breakpoint on the for statement (line 1). | 64 // Set a breakpoint on the for statement (line 1). |
65 bp1 = Debug.setBreakPoint(f, 1); | 65 bp1 = Debug.setBreakPoint(f, 1); |
66 | 66 |
67 // Check that performing 1000 steps will make i 499. | 67 // Check that performing 1000 steps will make i 499. |
68 state = 0; | 68 var step_count = 1000; |
69 result = -1; | 69 result = -1; |
70 f(); | 70 f(); |
71 assertEquals(332, result); | 71 assertEquals(332, result); |
72 | |
73 // Check that performing 1000 steps with a break point on the statement in the | |
74 // for loop (line 2) will only make i 0 as a real break point breaks even when | |
75 // multiple steps have been requested. | |
76 state = 0; | |
77 result = -1; | |
78 bp2 = Debug.setBreakPoint(f, 3); | |
79 f(); | |
80 assertEquals(0, result); | |
81 | |
82 // Get rid of the debug event listener. | |
83 Debug.setListener(null); | 72 Debug.setListener(null); |
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