164 lines
5.5 KiB
JavaScript
164 lines
5.5 KiB
JavaScript
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// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug
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// Get the Debug object exposed from the debug context global object.
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Debug = debug.Debug
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function ParsedResponse(json) {
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this.response_ = eval('(' + json + ')');
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this.refs_ = [];
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if (this.response_.refs) {
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for (var i = 0; i < this.response_.refs.length; i++) {
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this.refs_[this.response_.refs[i].handle] = this.response_.refs[i];
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}
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}
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}
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ParsedResponse.prototype.response = function() {
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return this.response_;
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}
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ParsedResponse.prototype.body = function() {
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return this.response_.body;
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}
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ParsedResponse.prototype.running = function() {
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return this.response_.running;
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}
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ParsedResponse.prototype.lookup = function(handle) {
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return this.refs_[handle];
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}
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listener_complete = false;
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exception = false;
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break_count = 0;
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expected_return_value = 0;
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debugger_source_position = 0;
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// Listener which expects to do four steps to reach returning from the function.
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function listener(event, exec_state, event_data, data) {
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try {
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if (event == Debug.DebugEvent.Break)
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{
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break_count++;
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if (break_count < 4) {
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assertFalse(exec_state.frame(0).isAtReturn())
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switch (break_count) {
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case 1:
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// Collect the position of the debugger statement.
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debugger_source_position = exec_state.frame(0).sourcePosition();
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break;
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case 2:
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// Position now at the if statement.
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assertEquals(debugger_source_position + 10,
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exec_state.frame(0).sourcePosition());
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break;
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case 3:
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// Position now at either of the returns.
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if (expected_return_value == 1) {
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assertEquals(debugger_source_position + 19,
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exec_state.frame(0).sourcePosition());
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} else {
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assertEquals(debugger_source_position + 38,
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exec_state.frame(0).sourcePosition());
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}
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break;
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default:
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fail("Unexpected");
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}
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exec_state.prepareStep(Debug.StepAction.StepIn, 1);
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} else {
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// Position at the end of the function.
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assertEquals(debugger_source_position + 51,
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exec_state.frame(0).sourcePosition());
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// Just about to return from the function.
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assertTrue(exec_state.frame(0).isAtReturn())
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assertEquals(expected_return_value,
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exec_state.frame(0).returnValue().value());
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// Check the same using the JSON commands.
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var dcp = exec_state.debugCommandProcessor(false);
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var request = '{"seq":0,"type":"request","command":"backtrace"}';
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var resp = dcp.processDebugJSONRequest(request);
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response = new ParsedResponse(resp);
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frames = response.body().frames;
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assertTrue(frames[0].atReturn);
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assertEquals(expected_return_value,
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response.lookup(frames[0].returnValue.ref).value);
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listener_complete = true;
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}
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}
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} catch (e) {
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exception = e
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};
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};
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// Add the debug event listener.
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Debug.setListener(listener);
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// Four steps from the debugger statement in this function will position us at
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// the function return.
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// 0 1 2 3 4 5
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// 0123456789012345678901234567890123456789012345678901
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function f(x) {debugger; if (x) { return 1; } else { return 2; } };
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// Call f expecting different return values.
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break_count = 0;
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expected_return_value = 2;
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listener_complete = false;
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f();
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assertFalse(exception, "exception in listener")
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assertTrue(listener_complete);
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assertEquals(4, break_count);
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break_count = 0;
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expected_return_value = 1;
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listener_complete = false;
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f(true);
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assertFalse(exception, "exception in listener")
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assertTrue(listener_complete);
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assertEquals(4, break_count);
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break_count = 0;
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expected_return_value = 2;
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listener_complete = false;
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f(false);
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assertFalse(exception, "exception in listener")
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assertTrue(listener_complete);
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assertEquals(4, break_count);
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