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 // Tests how debugger can step over not necessarily in the top frame. 33 34 // Simple 3 functions, that protocol their execution state in global 35 // variable state. 36 var state; 37 38 function f() { 39 var a = 1978; 40 for (state[2] = 0; state[2] < 3; state[2]++) { 41 void String(a); 42 } 43 } 44 function g() { 45 for (state[1] = 0; state[1] < 3; state[1]++) { 46 f(); 47 } 48 } 49 function h() { 50 state = [-1, -1, -1]; 51 for (state[0] = 0; state[0] < 3; state[0]++) { 52 g(); 53 } 54 } 55 56 function TestCase(expected_final_state) { 57 var listener_exception = null; 58 var state_snapshot; 59 var listener_state; 60 var bp; 61 62 function listener(event, exec_state, event_data, data) { 63 print("Here ("+event+"/"+listener_state+"): " + 64 exec_state.frame(0).sourceLineText()); 65 try { 66 if (event == Debug.DebugEvent.Break) { 67 if (listener_state == 0) { 68 Debug.clearBreakPoint(bp); 69 exec_state.prepareStep(Debug.StepAction.StepNext); 70 listener_state = 1; 71 } else if (listener_state == 1) { 72 state_snapshot = String(state); 73 print("State: " + state_snapshot); 74 Debug.setListener(null); 75 listener_state = 2; 76 } 77 } 78 } catch (e) { 79 listener_exception = e; 80 } 81 } 82 83 84 // Add the debug event listener. 85 listener_state = 0; 86 Debug.setListener(listener); 87 bp = Debug.setBreakPoint(f, 1); 88 89 h(); 90 Debug.setListener(null); 91 if (listener_exception !== null) { 92 print("Exception caught: " + listener_exception); 93 assertUnreachable(); 94 } 95 96 assertEquals(expected_final_state, state_snapshot); 97 } 98 99 100 // Warm-up -- make sure all is compiled and ready for breakpoint. 101 h(); 102 103 TestCase("0,0,-1"); 104