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debug-constructor.js
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76 lines (66 loc) · 2.58 KB
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// 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.
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(Debug.StepAction.StepIn);
}
};
// 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);