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 --debug-eval-readonly-locals --legacy-const 29 30 Debug = debug.Debug 31 32 listenerComplete = false; 33 exception = 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. 40 function 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(undefined, var0); 54 assertEquals(0, const0); 55 assertEquals(undefined, const1); 56 assertEquals(undefined, const2); 57 var var0 = 20; 58 const const1 = 1; 59 const const2 = 2; 60 assertEquals(20, var0); 61 assertEquals(1, const1); 62 assertEquals(2, const2); 63 } 64 65 g(); 66 67 assertEquals(21, var1); 68 assertEquals(3, const3); 69 } 70 71 72 function listener(event, exec_state, event_data, data) { 73 if (event != Debug.DebugEvent.Break) return; 74 try { 75 var frame = exec_state.frame(0); 76 var evaluate = function(something) { 77 return frame.evaluate(something).value() 78 } 79 80 var count = frame.localCount(); 81 assertEquals(4, count); 82 var expectation = { "const0" : 0, 83 "const1" : undefined, 84 "const2" : undefined, 85 "const3" : 3, 86 "var0" : undefined, 87 "var1" : 21 }; 88 for (var i = 0; i < frame.localCount(); ++i) { 89 var name = frame.localName(i); 90 var value = frame.localValue(i).value(); 91 assertEquals(expectation[name], value); 92 } 93 94 evaluate('const0 = 10'); 95 evaluate('const2 = 12'); 96 evaluate('const3 = 13'); 97 evaluate('var0 = 30'); 98 evaluate('var1 = 31'); 99 100 // Indicate that all was processed. 101 listenerComplete = true; 102 } catch (e) { 103 exception = e; 104 print("Caught something. " + e + " " + e.stack); 105 }; 106 }; 107 108 // Run and compile before debugger is active. 109 try { f(); } catch (e) { } 110 111 Debug.setListener(listener); 112 113 f(); 114 115 Debug.setListener(null); 116 117 assertFalse(exception, "exception in listener") 118 assertTrue(listenerComplete); 119