| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Flags: --expose-debug-as debug |
| |
| Debug = debug.Debug |
| |
| listenerComplete = false; |
| exception = false; |
| |
| // var0: init after break point, changed by debug eval. |
| // const0: init before break point, changed by debug eval. |
| // const1: init after break point, materialized but untouched by debug eval. |
| // const2: init after break point, materialized and changed by debug eval. |
| // const3: context allocated const, init before break point, changed by eval. |
| function f() { |
| var var1 = 21; |
| const const3 = 3; |
| |
| function g() { |
| const const0 = 0; |
| assertEquals(undefined, const1); |
| assertEquals(undefined, const2); |
| assertEquals(3, const3); |
| assertEquals(21, var1); |
| |
| debugger; // Break point. |
| |
| assertEquals(30, var0); |
| // TODO(yangguo): debug evaluate should not be able to alter |
| // stack-allocated const values |
| // assertEquals(0, const0); |
| assertEquals(undefined, const1); |
| assertEquals(undefined, const2); |
| var var0 = 20; |
| const const1 = 1; |
| const const2 = 2; |
| assertEquals(20, var0); |
| assertEquals(1, const1); |
| assertEquals(2, const2); |
| } |
| |
| g(); |
| |
| assertEquals(31, var1); |
| assertEquals(3, const3); |
| } |
| |
| |
| function listener(event, exec_state, event_data, data) { |
| if (event != Debug.DebugEvent.Break) return; |
| try { |
| var frame = exec_state.frame(0); |
| var evaluate = function(something) { |
| return frame.evaluate(something).value() |
| } |
| |
| var count = frame.localCount(); |
| assertEquals(4, count); |
| var expectation = { "const0" : 0, |
| "const1" : undefined, |
| "const2" : undefined, |
| "const3" : 3, |
| "var0" : undefined, |
| "var1" : 21 }; |
| for (var i = 0; i < frame.localCount(); ++i) { |
| var name = frame.localName(i); |
| var value = frame.localValue(i).value(); |
| assertEquals(expectation[name], value); |
| } |
| |
| evaluate('const0 = 10'); |
| evaluate('const2 = 12'); |
| evaluate('const3 = 13'); |
| evaluate('var0 = 30'); |
| evaluate('var1 = 31'); |
| |
| // Indicate that all was processed. |
| listenerComplete = true; |
| } catch (e) { |
| exception = e; |
| print("Caught something. " + e + " " + e.stack); |
| }; |
| }; |
| |
| // Run and compile before debugger is active. |
| try { f(); } catch (e) { } |
| |
| Debug.setListener(listener); |
| |
| f(); |
| |
| Debug.setListener(null); |
| |
| assertFalse(exception, "exception in listener") |
| assertTrue(listenerComplete); |