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Edit File: debug-constructor.js
// Copyright 2008 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 // Simple function which collects a simple call graph. var call_graph = ""; function listener(event, exec_state, event_data, data) { if (event == Debug.DebugEvent.Break) { call_graph += exec_state.frame().func().name(); exec_state.prepareStep(); } }; // Add the debug event listener. Debug.setListener(listener); // Test debug event for constructor. function a() { new c(); } function b() { x = 1; new c(); } function c() { this.x = 1; d(); } function d() { } // Break point stops on "new c()" and steps into c. Debug.setBreakPoint(a, 1); call_graph = ""; a(); Debug.clearStepping(); // Clear stepping as the listener leaves it on. assertEquals("accdca", call_graph); // Break point stops on "x = 1" and steps to "new c()" and then into c. Debug.setBreakPoint(b, 1); call_graph = ""; b(); Debug.clearStepping(); // Clear stepping as the listener leaves it on. assertEquals("bbccdcb", call_graph); // Get rid of the debug event listener. Debug.setListener(null);