| // Copyright 2010 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. |
| |
| Debug = debug.Debug |
| |
| let listener_complete = false; |
| let exceptionThrown = false; |
| let break_count = 0; |
| let expected_return_value = 0; |
| let expected_source_position = []; |
| let debugger_source_position = 0; |
| |
| // Listener which expects to do four steps to reach returning from the function. |
| function listener(event, exec_state, event_data, data) { |
| try { |
| if (event == Debug.DebugEvent.Break) |
| { |
| break_count++; |
| if (break_count < 4) { |
| switch (break_count) { |
| case 1: |
| // Collect the position of the debugger statement. |
| debugger_source_position = exec_state.frame(0).sourcePosition(); |
| break; |
| case 2: |
| // Position now at the if statement. |
| assertEquals(expected_source_position.shift() + debugger_source_position, |
| exec_state.frame(0).sourcePosition()); |
| break; |
| case 3: |
| // Position now at either of the returns. |
| assertEquals(expected_source_position.shift() + debugger_source_position, |
| exec_state.frame(0).sourcePosition()); |
| break; |
| default: |
| fail("Unexpected"); |
| } |
| exec_state.prepareStep(Debug.StepAction.StepIn); |
| } else { |
| // Position at the end of the function. |
| assertEquals(expected_source_position.shift() + debugger_source_position, |
| exec_state.frame(0).sourcePosition()); |
| // Just about to return from the function. |
| assertEquals(expected_return_value, |
| exec_state.frame(0).returnValue().value()); |
| |
| listener_complete = true; |
| } |
| } |
| } catch (e) { |
| exceptionThrown = true; |
| print(e + e.stack) |
| }; |
| }; |
| |
| // Add the debug event listener. |
| Debug.setListener(listener); |
| |
| // Four steps from the debugger statement in this function will position us at |
| // the function return. |
| // 0 1 2 3 4 5 |
| // 0123456789012345678901234567890123456789012345678901 |
| |
| function f(x) {debugger; if (x) { return 1; } else { return 2; } }; |
| |
| // Call f expecting different return values. |
| break_count = 0; |
| expected_return_value = 2; |
| expected_source_position = [10, 38, 47]; |
| listener_complete = false; |
| f(); |
| assertFalse(exceptionThrown, "exception in listener"); |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |
| |
| break_count = 0; |
| expected_return_value = 1; |
| expected_source_position = [10, 19, 28]; |
| listener_complete = false; |
| f(true); |
| assertFalse(exceptionThrown, "exception in listener"); |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |
| |
| break_count = 0; |
| expected_return_value = 2; |
| expected_source_position = [10, 38, 47]; |
| listener_complete = false; |
| f(false); |
| assertFalse(exceptionThrown, "exception in listener"); |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |