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
32listenerComplete = false;
33exception = false;
34
35
36function h() {
37  var a = 1;
38  var b = 2;
39  var eval = 5;  // Overriding eval should not break anything.
40  debugger;  // Breakpoint.
41  return a;
42}
43
44function checkFrame0(frame) {
45  // Frame 0 (h) has normal variables a and b.
46  var count = frame.localCount();
47  assertEquals(3, count);
48  for (var i = 0; i < count; ++i) {
49    var name = frame.localName(i);
50    var value = frame.localValue(i).value();
51    if (name == 'a') {
52      assertEquals(1, value);
53    } else if (name !='eval') {
54      assertEquals('b', name);
55      assertEquals(2, value);
56    }
57  }
58}
59
60
61function g() {
62  var a = 3;
63  eval("var b = 4;");
64  return h() + a;
65}
66
67function checkFrame1(frame) {
68  // Frame 1 (g) has normal variable a (and arguments).
69  var count = frame.localCount();
70  assertEquals(2, count);
71  for (var i = 0; i < count; ++i) {
72    var name = frame.localName(i);
73    var value = frame.localValue(i).value();
74    if (name == 'a') {
75      assertEquals(3, value);
76    } else {
77      assertEquals('arguments', name);
78    }
79  }
80}
81
82
83function f() {
84  var a = 5;
85  var b = 0;
86  with ({b:6}) {
87    return g();
88  }
89}
90
91function checkFrame2(frame) {
92  // Frame 2 (f) has normal variables a and b (and arguments).
93  var count = frame.localCount();
94  assertEquals(3, count);
95  for (var i = 0; i < count; ++i) {
96    var name = frame.localName(i);
97    var value = frame.localValue(i).value();
98    if (name == 'a') {
99      assertEquals(5, value);
100    } else if (name == 'b') {
101      assertEquals(0, value);
102    } else {
103      assertEquals('arguments', name);
104    }
105  }
106}
107
108
109function listener(event, exec_state, event_data, data) {
110  try {
111    if (event == Debug.DebugEvent.Break)
112    {
113      checkFrame0(exec_state.frame(0));
114      checkFrame1(exec_state.frame(1));
115      checkFrame2(exec_state.frame(2));
116
117      // Evaluating a and b on frames 0, 1 and 2 produces 1, 2, 3, 4, 5 and 6.
118      assertEquals(1, exec_state.frame(0).evaluate('a').value());
119      assertEquals(2, exec_state.frame(0).evaluate('b').value());
120      assertEquals(5, exec_state.frame(0).evaluate('eval').value());
121      assertEquals(3, exec_state.frame(1).evaluate('a').value());
122      assertEquals(4, exec_state.frame(1).evaluate('b').value());
123      assertEquals("function",
124                   typeof exec_state.frame(1).evaluate('eval').value());
125      assertEquals(5, exec_state.frame(2).evaluate('a').value());
126      assertEquals(6, exec_state.frame(2).evaluate('b').value());
127      assertEquals("function",
128                   typeof exec_state.frame(2).evaluate('eval').value());
129      assertEquals("foo",
130                   exec_state.frame(0).evaluate('a = "foo"').value());
131      assertEquals("bar",
132                   exec_state.frame(1).evaluate('a = "bar"').value());
133      // Indicate that all was processed.
134      listenerComplete = true;
135    }
136  } catch (e) {
137    exception = e;
138    print("Caught something. " + e + " " + e.stack);
139  };
140};
141
142// Add the debug event listener.
143Debug.setListener(listener);
144
145var f_result = f();
146
147assertEquals('foobar', f_result);
148
149// Make sure that the debug event listener was invoked.
150assertFalse(exception, "exception in listener")
151assertTrue(listenerComplete);
152