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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// The functions used for testing backtraces. They are at the top to make the
30// testing of source line/column easier.
31function f(x, y) {
32  a=1;
33};
34
35var m = function() {
36  new f(1);
37};
38
39function g() {
40  m();
41};
42
43
44// Get the Debug object exposed from the debug context global object.
45Debug = debug.Debug
46
47listenerCalled = false;
48exception = false;
49
50
51function ParsedResponse(json) {
52  this.response_ = eval('(' + json + ')');
53  this.refs_ = [];
54  if (this.response_.refs) {
55    for (var i = 0; i < this.response_.refs.length; i++) {
56      this.refs_[this.response_.refs[i].handle] = this.response_.refs[i];
57    }
58  }
59}
60
61
62ParsedResponse.prototype.response = function() {
63  return this.response_;
64}
65
66
67ParsedResponse.prototype.body = function() {
68  return this.response_.body;
69}
70
71
72ParsedResponse.prototype.running = function() {
73  return this.response_.running;
74}
75
76
77ParsedResponse.prototype.lookup = function(handle) {
78  return this.refs_[handle];
79}
80
81
82function listener(event, exec_state, event_data, data) {
83  try {
84    if (event == Debug.DebugEvent.Break) {
85      // The expected backtrace is
86      // 0: f
87      // 1: m
88      // 2: g
89      // 3: [anonymous]
90
91      var response;
92      var backtrace;
93      var frame;
94      var source;
95
96      var dcp;
97      // New copy of debug command processor paused state.
98      dcp = exec_state.debugCommandProcessor(false);
99
100      // Get the backtrace.
101      var json;
102      json = '{"seq":0,"type":"request","command":"backtrace"}'
103      var resp = dcp.processDebugJSONRequest(json);
104      response = new ParsedResponse(resp);
105      backtrace = response.body();
106      assertEquals(0, backtrace.fromFrame);
107      assertEquals(4, backtrace.toFrame);
108      assertEquals(4, backtrace.totalFrames);
109      var frames = backtrace.frames;
110      assertEquals(4, frames.length);
111      for (var i = 0; i < frames.length; i++) {
112        assertEquals('frame', frames[i].type);
113      }
114      assertEquals(0, frames[0].index);
115      assertEquals("f", response.lookup(frames[0].func.ref).name);
116      assertEquals(1, frames[1].index);
117      assertEquals("", response.lookup(frames[1].func.ref).name);
118      assertEquals("m", response.lookup(frames[1].func.ref).inferredName);
119      assertEquals(2, frames[2].index);
120      assertEquals("g", response.lookup(frames[2].func.ref).name);
121      assertEquals(3, frames[3].index);
122      assertEquals("", response.lookup(frames[3].func.ref).name);
123      assertFalse(response.running(), "expected not running");
124
125      // Get backtrace with two frames.
126      json = '{"seq":0,"type":"request","command":"backtrace","arguments":{"fromFrame":1,"toFrame":3}}'
127      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
128      backtrace = response.body();
129      assertEquals(1, backtrace.fromFrame);
130      assertEquals(3, backtrace.toFrame);
131      assertEquals(4, backtrace.totalFrames);
132      var frames = backtrace.frames;
133      assertEquals(2, frames.length);
134      for (var i = 0; i < frames.length; i++) {
135        assertEquals('frame', frames[i].type);
136      }
137      assertEquals(1, frames[0].index);
138      assertEquals("", response.lookup(frames[0].func.ref).name);
139      assertEquals("m", response.lookup(frames[0].func.ref).inferredName);
140      assertEquals(2, frames[1].index);
141      assertEquals("g", response.lookup(frames[1].func.ref).name);
142
143      // Get backtrace with bottom two frames.
144      json = '{"seq":0,"type":"request","command":"backtrace","arguments":{"fromFrame":0,"toFrame":2, "bottom":true}}'
145      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
146      backtrace = response.body();
147      assertEquals(2, backtrace.fromFrame);
148      assertEquals(4, backtrace.toFrame);
149      assertEquals(4, backtrace.totalFrames);
150      var frames = backtrace.frames;
151      assertEquals(2, frames.length);
152      for (var i = 0; i < frames.length; i++) {
153        assertEquals('frame', frames[i].type);
154      }
155      assertEquals(2, frames[0].index);
156      assertEquals("g", response.lookup(frames[0].func.ref).name);
157      assertEquals(3, frames[1].index);
158      assertEquals("", response.lookup(frames[1].func.ref).name);
159
160      // Get the individual frames.
161      json = '{"seq":0,"type":"request","command":"frame"}'
162      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
163      frame = response.body();
164      assertEquals(0, frame.index);
165      assertEquals("f", response.lookup(frame.func.ref).name);
166      assertTrue(frame.constructCall);
167      assertEquals(31, frame.line);
168      assertEquals(3, frame.column);
169      assertEquals(2, frame.arguments.length);
170      assertEquals('x', frame.arguments[0].name);
171      assertEquals('number', response.lookup(frame.arguments[0].value.ref).type);
172      assertEquals(1, response.lookup(frame.arguments[0].value.ref).value);
173      assertEquals('y', frame.arguments[1].name);
174      assertEquals('undefined', response.lookup(frame.arguments[1].value.ref).type);
175
176      json = '{"seq":0,"type":"request","command":"frame","arguments":{"number":0}}'
177      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
178      frame = response.body();
179      assertEquals(0, frame.index);
180      assertEquals("f", response.lookup(frame.func.ref).name);
181      assertEquals(31, frame.line);
182      assertEquals(3, frame.column);
183      assertEquals(2, frame.arguments.length);
184      assertEquals('x', frame.arguments[0].name);
185      assertEquals('number', response.lookup(frame.arguments[0].value.ref).type);
186      assertEquals(1, response.lookup(frame.arguments[0].value.ref).value);
187      assertEquals('y', frame.arguments[1].name);
188      assertEquals('undefined', response.lookup(frame.arguments[1].value.ref).type);
189
190      json = '{"seq":0,"type":"request","command":"frame","arguments":{"number":1}}'
191      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
192      frame = response.body();
193      assertEquals(1, frame.index);
194      assertEquals("", response.lookup(frame.func.ref).name);
195      assertEquals("m", response.lookup(frame.func.ref).inferredName);
196      assertFalse(frame.constructCall);
197      assertEquals(35, frame.line);
198      assertEquals(6, frame.column);
199      assertEquals(0, frame.arguments.length);
200
201      json = '{"seq":0,"type":"request","command":"frame","arguments":{"number":3}}'
202      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
203      frame = response.body();
204      assertEquals(3, frame.index);
205      assertEquals("", response.lookup(frame.func.ref).name);
206
207      // Source slices for the individual frames (they all refer to this script).
208      json = '{"seq":0,"type":"request","command":"source",' +
209              '"arguments":{"frame":0,"fromLine":30,"toLine":32}}'
210      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
211      source = response.body();
212      assertEquals("function f(x, y) {", source.source.substring(0, 18));
213      assertEquals(30, source.fromLine);
214      assertEquals(32, source.toLine);
215
216      json = '{"seq":0,"type":"request","command":"source",' +
217              '"arguments":{"frame":1,"fromLine":31,"toLine":32}}'
218      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
219      source = response.body();
220      assertEquals("  a=1;", source.source.substring(0, 6));
221      assertEquals(31, source.fromLine);
222      assertEquals(32, source.toLine);
223
224      json = '{"seq":0,"type":"request","command":"source",' +
225              '"arguments":{"frame":2,"fromLine":35,"toLine":36}}'
226      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
227      source = response.body();
228      assertEquals("  new f(1);", source.source.substring(0, 11));
229      assertEquals(35, source.fromLine);
230      assertEquals(36, source.toLine);
231
232      // Test line interval way beyond this script will result in an error.
233      json = '{"seq":0,"type":"request","command":"source",' +
234              '"arguments":{"frame":0,"fromLine":10000,"toLine":20000}}'
235      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
236      assertFalse(response.response().success);
237
238      // Test without arguments.
239      json = '{"seq":0,"type":"request","command":"source"}'
240      response = new ParsedResponse(dcp.processDebugJSONRequest(json));
241      source = response.body();
242      assertEquals(Debug.findScript(f).source, source.source);
243
244      // New copy of debug command processor in running state.
245      dcp = exec_state.debugCommandProcessor(true);
246      // Get the backtrace.
247      json = '{"seq":0,"type":"request","command":"backtrace"}'
248      resp = dcp.processDebugJSONRequest(json);
249      response = new ParsedResponse(resp);
250      // It might be argueable, but we expect response to have body when
251      // not suspended
252      assertTrue(!!response.body(), "response should be null");
253      assertTrue(response.running(), "expected running");
254
255      listenerCalled = true;
256    }
257  } catch (e) {
258    exception = e
259  };
260};
261
262// Add the debug event listener.
263Debug.setListener(listener);
264
265// Set a break point and call to invoke the debug event listener.
266Debug.setBreakPoint(f, 0, 0);
267g();
268
269// Make sure that the debug event listener vas invoked.
270assertFalse(exception, "exception in listener");
271assertTrue(listenerCalled);
272