| // 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. |
| |
| // Flags: --expose-debug-as debug |
| // Get the Debug object exposed from the debug context global object. |
| Debug = debug.Debug |
| |
| |
| function ParsedResponse(json) { |
| this.response_ = eval('(' + json + ')'); |
| this.refs_ = []; |
| if (this.response_.refs) { |
| for (var i = 0; i < this.response_.refs.length; i++) { |
| this.refs_[this.response_.refs[i].handle] = this.response_.refs[i]; |
| } |
| } |
| } |
| |
| |
| ParsedResponse.prototype.response = function() { |
| return this.response_; |
| } |
| |
| |
| ParsedResponse.prototype.body = function() { |
| return this.response_.body; |
| } |
| |
| |
| ParsedResponse.prototype.running = function() { |
| return this.response_.running; |
| } |
| |
| |
| ParsedResponse.prototype.lookup = function(handle) { |
| return this.refs_[handle]; |
| } |
| |
| |
| listener_complete = false; |
| exception = false; |
| break_count = 0; |
| expected_return_value = 0; |
| 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) { |
| assertFalse(exec_state.frame(0).isAtReturn()) |
| 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(debugger_source_position + 10, |
| exec_state.frame(0).sourcePosition()); |
| break; |
| case 3: |
| // Position now at either of the returns. |
| if (expected_return_value == 1) { |
| assertEquals(debugger_source_position + 19, |
| exec_state.frame(0).sourcePosition()); |
| } else { |
| assertEquals(debugger_source_position + 38, |
| exec_state.frame(0).sourcePosition()); |
| } |
| break; |
| default: |
| fail("Unexpected"); |
| } |
| exec_state.prepareStep(Debug.StepAction.StepIn, 1); |
| } else { |
| // Position at the end of the function. |
| assertEquals(debugger_source_position + 50, |
| exec_state.frame(0).sourcePosition()); |
| |
| // Just about to return from the function. |
| assertTrue(exec_state.frame(0).isAtReturn()) |
| assertEquals(expected_return_value, |
| exec_state.frame(0).returnValue().value()); |
| |
| // Check the same using the JSON commands. |
| var dcp = exec_state.debugCommandProcessor(false); |
| var request = '{"seq":0,"type":"request","command":"backtrace"}'; |
| var resp = dcp.processDebugJSONRequest(request); |
| response = new ParsedResponse(resp); |
| frames = response.body().frames; |
| assertTrue(frames[0].atReturn); |
| assertEquals(expected_return_value, |
| response.lookup(frames[0].returnValue.ref).value); |
| |
| listener_complete = true; |
| } |
| } |
| } catch (e) { |
| exception = e |
| }; |
| }; |
| |
| // 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; |
| listener_complete = false; |
| f(); |
| assertFalse(exception, "exception in listener") |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |
| |
| break_count = 0; |
| expected_return_value = 1; |
| listener_complete = false; |
| f(true); |
| assertFalse(exception, "exception in listener") |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |
| |
| break_count = 0; |
| expected_return_value = 2; |
| listener_complete = false; |
| f(false); |
| assertFalse(exception, "exception in listener") |
| assertTrue(listener_complete); |
| assertEquals(4, break_count); |