1 // Copyright 2012 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 var breaks = 0; 32 var exception = false; 33 34 function sendCommand(state, cmd) { 35 // Get the debug command processor in paused state. 36 var dcp = state.debugCommandProcessor(false); 37 var request = JSON.stringify(cmd); 38 var response = dcp.processDebugJSONRequest(request); 39 } 40 41 function listener(event, exec_state, event_data, data) { 42 try { 43 if (event == Debug.DebugEvent.Break) { 44 var line = event_data.sourceLineText(); 45 print('break: ' + line); 46 47 assertEquals(-1, line.indexOf('NOBREAK'), 48 "should not break on unexpected lines") 49 assertEquals('BREAK ' + breaks, line.substr(-7)); 50 breaks++; 51 if (breaks < 4) { 52 sendCommand(exec_state, { 53 seq: 0, 54 type: "request", 55 command: "continue", 56 arguments: { stepaction: "next" } 57 }); 58 } 59 } 60 } catch (e) { 61 print(e); 62 exception = true; 63 } 64 } 65 66 // Add the debug event listener. 67 Debug.setListener(listener); 68 69 function a(f) { 70 if (f) { // NOBREAK: should not break here! 71 try { 72 f(); 73 } catch(e) { 74 } 75 } 76 } // BREAK 2 77 78 function b() { 79 c(); // BREAK 0 80 } // BREAK 1 81 82 function c() { 83 a(); 84 } 85 86 // Set a break point and call to invoke the debug event listener. 87 Debug.setBreakPoint(b, 0, 0); 88 a(b); 89 a(); // BREAK 3 90 91 assertFalse(exception); 92