1 // Copyright 2011 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 function sendCommand(state, cmd) { 33 // Get the debug command processor in paused state. 34 var dcp = state.debugCommandProcessor(false); 35 var request = JSON.stringify(cmd); 36 var response = dcp.processDebugJSONRequest(request); 37 return JSON.parse(response); 38 } 39 40 function listener(event, exec_state, event_data, data) { 41 try { 42 if (event == Debug.DebugEvent.Break) { 43 var line = event_data.sourceLineText(); 44 print('break: ' + line); 45 46 var frame = sendCommand(exec_state, { 47 seq: 0, 48 type: "request", 49 command: "frame" 50 }); 51 52 sendCommand(exec_state, { 53 seq: 0, 54 type: "request", 55 command: "evaluate", 56 arguments: { 57 expression: "obj.x.toString()", 58 additional_context: [{ 59 name: "obj", 60 handle: frame.body.receiver.ref 61 }] 62 } 63 }); 64 } 65 } catch (e) { 66 print(e); 67 } 68 } 69 70 Debug.setListener(listener); 71 72 function a(x, y) { 73 this.x = x; 74 this.y = y; 75 } 76 77 Debug.setBreakPoint(a, 0, 0); 78 new a(1, 2); 79
