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. 30 Debug = debug.Debug 31 32 // Make sure that the backtrace command can be processed when the receiver is 33 // undefined. 34 listenerCalled = false; 35 exception = false; 36 37 function 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 48 ParsedResponse.prototype.response = function() { 49 return this.response_; 50 } 51 52 53 ParsedResponse.prototype.body = function() { 54 return this.response_.body; 55 } 56 57 58 ParsedResponse.prototype.lookup = function(handle) { 59 return this.refs_[handle]; 60 } 61 62 63 function 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. 93 Debug.setListener(listener); 94 95 // Call method on undefined. 96 function g() { 97 (void 0).f(); 98 }; 99 100 // Break on the exception to do a backtrace with undefined as receiver. 101 Debug.setBreakOnException(true); 102 try { 103 g(); 104 } catch(e) { 105 // Ignore the exception "Cannot call method 'x' of undefined" 106 } 107 108 assertFalse(exception, "exception in listener", exception) 109 // Make sure that the debug event listener vas invoked. 110 assertTrue(listenerCalled, "listener not called"); 111
