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 32// Make sure that the backtrace command can be processed when the receiver is 33// undefined. 34listenerCalled = false; 35exception = false; 36 37function ParsedResponse(json) { 38 this.response_ = eval('(' + json + ')'); 39 this.refs_ = []; 40 if (this.response_.refs) { 41 for (var i = 0; i < this.response_.refs.length; i++) { 42 this.refs_[this.response_.refs[i].handle] = this.response_.refs[i]; 43 } 44 } 45} 46 47 48ParsedResponse.prototype.response = function() { 49 return this.response_; 50} 51 52 53ParsedResponse.prototype.body = function() { 54 return this.response_.body; 55} 56 57 58ParsedResponse.prototype.lookup = function(handle) { 59 return this.refs_[handle]; 60} 61 62 63function listener(event, exec_state, event_data, data) { 64 try { 65 if (event == Debug.DebugEvent.Exception) 66 { 67 // The expected backtrace is 68 // 1: g 69 // 0: [anonymous] 70 71 // Get the debug command processor. 72 var dcp = exec_state.debugCommandProcessor(false); 73 74 // Get the backtrace. 75 var json; 76 json = '{"seq":0,"type":"request","command":"backtrace"}' 77 var response = new ParsedResponse(dcp.processDebugJSONRequest(json)); 78 var backtrace = response.body(); 79 assertEquals(2, backtrace.totalFrames); 80 assertEquals(2, backtrace.frames.length); 81 82 assertEquals("g", response.lookup(backtrace.frames[0].func.ref).name); 83 assertEquals("", response.lookup(backtrace.frames[1].func.ref).name); 84 85 listenerCalled = true; 86 } 87 } catch (e) { 88 exception = e 89 }; 90}; 91 92// Add the debug event listener. 93Debug.setListener(listener); 94 95// Call method on undefined. 96function g() { 97 (void 0).f(); 98}; 99 100// Break on the exception to do a backtrace with undefined as receiver. 101Debug.setBreakOnException(true); 102try { 103 g(); 104} catch(e) { 105 // Ignore the exception "Cannot call method 'x' of undefined" 106} 107 108assertFalse(exception, "exception in listener", exception) 109// Make sure that the debug event listener vas invoked. 110assertTrue(listenerCalled, "listener not called"); 111