1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug
// Simple debug event handler which first time hit will perform 1000 steps and
// second time hit will evaluate and store the value of "i". If requires that
// the global property "state" is initially zero.
var bp1, bp2;
function listener(event, exec_state, event_data, data) {
if (event == Debug.DebugEvent.Break) {
if (state == 0) {
exec_state.prepareStep(Debug.StepAction.StepIn, 1000);
state = 1;
} else if (state == 1) {
result = exec_state.frame().evaluate("i").value();
// Clear the break point on line 2 if set.
if (bp2) {
Debug.clearBreakPoint(bp2);
}
}
}
};
// Add the debug event listener.
Debug.setListener(listener);
// Test debug event for break point.
function f() {
for (i = 0; i < 1000; i++) { // Line 1.
x = 1; // Line 2.
}
};
// Set a breakpoint on the for statement (line 1).
bp1 = Debug.setBreakPoint(f, 1);
// Check that performing 1000 steps will make i 499.
state = 0;
result = -1;
f();
assertEquals(499, result);
// Check that performing 1000 steps with a break point on the statement in the
// for loop (line 2) will only make i 0 as a real break point breaks even when
// multiple steps have been requested.
state = 0;
result = -1;
bp2 = Debug.setBreakPoint(f, 2);
f();
assertEquals(0, result);
// Get rid of the debug event listener.
Debug.setListener(null);
|
