1// Copyright 2008 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --expose-debug-as debug
29// Get the Debug object exposed from the debug context global object.
30Debug = debug.Debug
31
32// Make sure that the backtrace command can be processed when the receiver is
33// undefined.
34listenerCalled = false;
35exception = false;
36
37function ParsedResponse(json) {
38  this.response_ = eval('(' + json + ')');
39  this.refs_ = [];
40  if (this.response_.refs) {
41    for (var i = 0; i < this.response_.refs.length; i++) {
42      this.refs_[this.response_.refs[i].handle] = this.response_.refs[i];
43    }
44  }
45}
46
47
48ParsedResponse.prototype.response = function() {
49  return this.response_;
50}
51
52
53ParsedResponse.prototype.body = function() {
54  return this.response_.body;
55}
56
57
58ParsedResponse.prototype.lookup = function(handle) {
59  return this.refs_[handle];
60}
61
62
63function listener(event, exec_state, event_data, data) {
64  try {
65  if (event == Debug.DebugEvent.Exception)
66  {
67    // The expected backtrace is
68    // 1: g
69    // 0: [anonymous]
70
71    // Get the debug command processor.
72    var dcp = exec_state.debugCommandProcessor(false);
73
74    // Get the backtrace.
75    var json;
76    json = '{"seq":0,"type":"request","command":"backtrace"}'
77    var response = new ParsedResponse(dcp.processDebugJSONRequest(json));
78    var backtrace = response.body();
79    assertEquals(2, backtrace.totalFrames);
80    assertEquals(2, backtrace.frames.length);
81
82    assertEquals("g", response.lookup(backtrace.frames[0].func.ref).name);
83    assertEquals("", response.lookup(backtrace.frames[1].func.ref).name);
84
85    listenerCalled = true;
86  }
87  } catch (e) {
88    exception = e
89  };
90};
91
92// Add the debug event listener.
93Debug.setListener(listener);
94
95// Call method on undefined.
96function g() {
97  (void 0).f();
98};
99
100// Break on the exception to do a backtrace with undefined as receiver.
101Debug.setBreakOnException(true);
102try {
103  g();
104} catch(e) {
105  // Ignore the exception "Cannot call method 'x' of undefined"
106}
107
108assertFalse(exception, "exception in listener", exception)
109// Make sure that the debug event listener vas invoked.
110assertTrue(listenerCalled, "listener not called");
111