1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2008 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Flags: --expose-debug-as debug 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Get the Debug object exposed from the debug context global object. 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockDebug = debug.Debug 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Make sure that the backtrace command can be processed when the receiver is 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// undefined. 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlocklistenerCalled = false; 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockexception = false; 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockfunction ParsedResponse(json) { 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block this.response_ = eval('(' + json + ')'); 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block this.refs_ = []; 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (this.response_.refs) { 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block for (var i = 0; i < this.response_.refs.length; i++) { 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block this.refs_[this.response_.refs[i].handle] = this.response_.refs[i]; 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockParsedResponse.prototype.response = function() { 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return this.response_; 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockParsedResponse.prototype.body = function() { 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return this.response_.body; 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockParsedResponse.prototype.lookup = function(handle) { 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block return this.refs_[handle]; 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockfunction listener(event, exec_state, event_data, data) { 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block try { 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (event == Debug.DebugEvent.Exception) 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block { 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // The expected backtrace is 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 1: g 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // 0: [anonymous] 70589d6979ff2ef66fca2d8fa51404c369ca5e9250Ben Murdoch 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the debug command processor. 723ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block var dcp = exec_state.debugCommandProcessor(false); 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Get the backtrace. 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block var json; 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block json = '{"seq":0,"type":"request","command":"backtrace"}' 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block var response = new ParsedResponse(dcp.processDebugJSONRequest(json)); 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block var backtrace = response.body(); 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assertEquals(2, backtrace.totalFrames); 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assertEquals(2, backtrace.frames.length); 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assertEquals("g", response.lookup(backtrace.frames[0].func.ref).name); 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block assertEquals("", response.lookup(backtrace.frames[1].func.ref).name); 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block listenerCalled = true; 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } catch (e) { 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block exception = e 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block }; 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Add the debug event listener. 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockDebug.setListener(listener); 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Call method on undefined. 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockfunction g() { 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block (void 0).f(); 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block}; 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Break on the exception to do a backtrace with undefined as receiver. 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockDebug.setBreakOnException(true); 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block g(); 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} catch(e) { 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Ignore the exception "Cannot call method 'x' of undefined" 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1083ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve BlockassertFalse(exception, "exception in listener", exception) 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Make sure that the debug event listener vas invoked. 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertTrue(listenerCalled, "listener not called"); 111