Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 | |
| 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(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 | |
| 74 | function 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. |
| 111 | try { f(); } catch (e) { } |
| 112 | |
| 113 | Debug.setListener(listener); |
| 114 | |
| 115 | f(); |
| 116 | |
| 117 | Debug.setListener(null); |
| 118 | |
| 119 | assertFalse(exception, "exception in listener") |
| 120 | assertTrue(listenerComplete); |