1// Copyright 2012 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// Simple debug event handler which just counts the number of break points hit.
33var break_point_hit_count = 0;
34
35function listener(event, exec_state, event_data, data) {
36  if (event == Debug.DebugEvent.Break) {
37    break_point_hit_count++;
38  }
39};
40
41// Add the debug event listener.
42Debug.setListener(listener);
43
44function makeClosure() {
45  var x;
46  return function() {
47    return x;                // Breakpoint line ( #47 )
48  };
49}
50
51// Create closure before break point is set.
52var closure = makeClosure();
53
54// The debugger triggers re-compilation.
55assertEquals(0, Debug.scriptBreakPoints().length);
56var scr = Debug.findScript(makeClosure);
57var sbp = Debug.setScriptBreakPointById(scr.id, 47);
58assertEquals(1, Debug.scriptBreakPoints().length);
59
60// Ensure the closure actually triggers a break point hit.
61closure();
62assertEquals(1, break_point_hit_count);
63
64// Remove script break point.
65assertEquals(1, Debug.scriptBreakPoints().length);
66Debug.clearBreakPoint(sbp);
67assertEquals(0, Debug.scriptBreakPoints().length);
68