1// Copyright 2011 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
32function sendCommand(state, cmd) {
33  // Get the debug command processor in paused state.
34  var dcp = state.debugCommandProcessor(false);
35  var request = JSON.stringify(cmd);
36  var response = dcp.processDebugJSONRequest(request);
37  return JSON.parse(response);
38}
39
40function listener(event, exec_state, event_data, data) {
41  try {
42    if (event == Debug.DebugEvent.Break) {
43      var line = event_data.sourceLineText();
44      print('break: ' + line);
45
46      var frame = sendCommand(exec_state, {
47        seq: 0,
48        type: "request",
49        command: "frame"
50      });
51
52      sendCommand(exec_state, {
53        seq: 0,
54        type: "request",
55        command: "evaluate",
56        arguments: {
57          expression: "obj.x.toString()",
58          additional_context: [{
59            name: "obj",
60            handle: frame.body.receiver.ref
61          }]
62        }
63      });
64    }
65  } catch (e) {
66    print(e);
67  }
68}
69
70Debug.setListener(listener);
71
72function a(x, y) {
73  this.x = x;
74  this.y = y;
75}
76
77Debug.setBreakPoint(a, 0, 0);
78new a(1, 2);
79