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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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27 | 27 |
28 // Flags: --expose-debug-as debug | 28 // Flags: --expose-debug-as debug |
29 // Get the Debug object exposed from the debug context global object. | 29 // Get the Debug object exposed from the debug context global object. |
30 Debug = debug.Debug | 30 Debug = debug.Debug |
31 | 31 |
32 // Make sure that the backtrace command can be processed when the receiver is | 32 // Make sure that the backtrace command can be processed when the receiver is |
33 // undefined. | 33 // undefined. |
34 listenerCalled = false; | 34 listenerCalled = false; |
35 exception = false; | 35 exception = false; |
36 | 36 |
37 function safeEval(code) { | 37 function ParsedResponse(json) { |
38 try { | 38 this.response_ = eval('(' + json + ')'); |
39 return eval('(' + code + ')'); | 39 this.refs_ = []; |
40 } catch (e) { | 40 if (this.response_.refs) { |
41 return undefined; | 41 for (var i = 0; i < this.response_.refs.length; i++) { |
| 42 this.refs_[this.response_.refs[i].handle] = this.response_.refs[i]; |
| 43 } |
42 } | 44 } |
43 } | 45 } |
44 | 46 |
| 47 |
| 48 ParsedResponse.prototype.response = function() { |
| 49 return this.response_; |
| 50 } |
| 51 |
| 52 |
| 53 ParsedResponse.prototype.body = function() { |
| 54 return this.response_.body; |
| 55 } |
| 56 |
| 57 |
| 58 ParsedResponse.prototype.lookup = function(handle) { |
| 59 return this.refs_[handle]; |
| 60 } |
| 61 |
| 62 |
45 function listener(event, exec_state, event_data, data) { | 63 function listener(event, exec_state, event_data, data) { |
46 try { | 64 try { |
47 if (event == Debug.DebugEvent.Exception) | 65 if (event == Debug.DebugEvent.Exception) |
48 { | 66 { |
49 // The expected backtrace is | 67 // The expected backtrace is |
50 // 1: g | 68 // 1: g |
51 // 0: [anonymous] | 69 // 0: [anonymous] |
52 | 70 |
53 // Get the debug command processor. | 71 // Get the debug command processor. |
54 var dcp = exec_state.debugCommandProcessor(); | 72 var dcp = exec_state.debugCommandProcessor(); |
55 | 73 |
56 // Get the backtrace. | 74 // Get the backtrace. |
57 var json; | 75 var json; |
58 json = '{"seq":0,"type":"request","command":"backtrace"}' | 76 json = '{"seq":0,"type":"request","command":"backtrace"}' |
59 var backtrace = safeEval(dcp.processDebugJSONRequest(json)).body; | 77 var response = new ParsedResponse(dcp.processDebugJSONRequest(json)); |
| 78 var backtrace = response.body(); |
60 assertEquals(2, backtrace.totalFrames); | 79 assertEquals(2, backtrace.totalFrames); |
61 assertEquals(2, backtrace.frames.length); | 80 assertEquals(2, backtrace.frames.length); |
62 | 81 |
63 assertEquals("g", backtrace.frames[0].func.name); | 82 assertEquals("g", response.lookup(backtrace.frames[0].func.ref).name); |
64 assertEquals("", backtrace.frames[1].func.name); | 83 assertEquals("", response.lookup(backtrace.frames[1].func.ref).name); |
65 | 84 |
66 listenerCalled = true; | 85 listenerCalled = true; |
67 } | 86 } |
68 } catch (e) { | 87 } catch (e) { |
69 exception = e | 88 exception = e |
70 }; | 89 }; |
71 }; | 90 }; |
72 | 91 |
73 // Add the debug event listener. | 92 // Add the debug event listener. |
74 Debug.addListener(listener); | 93 Debug.addListener(listener); |
75 | 94 |
76 // Call method on undefined. | 95 // Call method on undefined. |
77 function g() { | 96 function g() { |
78 (void 0).f(); | 97 (void 0).f(); |
79 }; | 98 }; |
80 | 99 |
81 // Break on the exception to do a backtrace with undefined as receiver. | 100 // Break on the exception to do a backtrace with undefined as receiver. |
82 Debug.setBreakOnException(true); | 101 Debug.setBreakOnException(true); |
83 try { | 102 try { |
84 g(); | 103 g(); |
85 } catch(e) { | 104 } catch(e) { |
86 // Ignore the exception "Cannot call method 'x' of undefined" | 105 // Ignore the exception "Cannot call method 'x' of undefined" |
87 } | 106 } |
88 | 107 |
89 // Make sure that the debug event listener vas invoked. | 108 // Make sure that the debug event listener vas invoked. |
90 assertTrue(listenerCalled, "listener not called"); | 109 assertTrue(listenerCalled, "listener not called"); |
91 assertFalse(exception, "exception in listener", exception) | 110 assertFalse(exception, "exception in listener", exception) |
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