1// Copyright 2013 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 30Debug = debug.Debug 31 32listenerComplete = false; 33exception = false; 34 35// var0: init after break point, changed by debug eval. 36// const0: init before break point, changed by debug eval. 37// const1: init after break point, materialized but untouched by debug eval. 38// const2: init after break point, materialized and changed by debug eval. 39// const3: context allocated const, init before break point, changed by eval. 40function f() { 41 var var1 = 21; 42 const const3 = 3; 43 44 function g() { 45 const const0 = 0; 46 assertEquals(undefined, const1); 47 assertEquals(undefined, const2); 48 assertEquals(3, const3); 49 assertEquals(21, var1); 50 51 debugger; // Break point. 52 53 assertEquals(30, var0); 54 // TODO(yangguo): debug evaluate should not be able to alter 55 // stack-allocated const values 56 // assertEquals(0, const0); 57 assertEquals(undefined, const1); 58 assertEquals(undefined, const2); 59 var var0 = 20; 60 const const1 = 1; 61 const const2 = 2; 62 assertEquals(20, var0); 63 assertEquals(1, const1); 64 assertEquals(2, const2); 65 } 66 67 g(); 68 69 assertEquals(31, var1); 70 assertEquals(3, const3); 71} 72 73 74function listener(event, exec_state, event_data, data) { 75 if (event != Debug.DebugEvent.Break) return; 76 try { 77 var frame = exec_state.frame(0); 78 var evaluate = function(something) { 79 return frame.evaluate(something).value() 80 } 81 82 var count = frame.localCount(); 83 assertEquals(4, count); 84 var expectation = { "const0" : 0, 85 "const1" : undefined, 86 "const2" : undefined, 87 "const3" : 3, 88 "var0" : undefined, 89 "var1" : 21 }; 90 for (var i = 0; i < frame.localCount(); ++i) { 91 var name = frame.localName(i); 92 var value = frame.localValue(i).value(); 93 assertEquals(expectation[name], value); 94 } 95 96 evaluate('const0 = 10'); 97 evaluate('const2 = 12'); 98 evaluate('const3 = 13'); 99 evaluate('var0 = 30'); 100 evaluate('var1 = 31'); 101 102 // Indicate that all was processed. 103 listenerComplete = true; 104 } catch (e) { 105 exception = e; 106 print("Caught something. " + e + " " + e.stack); 107 }; 108}; 109 110// Run and compile before debugger is active. 111try { f(); } catch (e) { } 112 113Debug.setListener(listener); 114 115f(); 116 117Debug.setListener(null); 118 119assertFalse(exception, "exception in listener") 120assertTrue(listenerComplete); 121 122