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154 lines
4.6 KiB
154 lines
4.6 KiB
12 years ago
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// Copyright 2012 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 FindCallFrame(exec_state, frame_code) {
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var number = Number(frame_code);
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if (number >= 0) {
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return exec_state.frame(number);
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} else {
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for (var i = 0; i < exec_state.frameCount(); i++) {
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var frame = exec_state.frame(i);
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var func_mirror = frame.func();
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if (frame_code == func_mirror.name()) {
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return frame;
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}
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}
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}
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throw new Error("Failed to find function name " + function_name);
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}
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function TestCase(test_scenario, expected_output) {
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// Global variable, accessed from eval'd script.
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test_output = "";
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function TestCode() {
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function A() {
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// Extra stack variable. To make function not slim.
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// Restarter doesn't work on slim function when stopped on 'debugger'
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// statement. (There is no padding for 'debugger' statement).
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var o = {};
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test_output += 'A';
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test_output += '=';
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debugger;
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return 'Capybara';
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}
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function B(p1, p2) {
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test_output += 'B';
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return A();
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}
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function C() {
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test_output += 'C';
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// Function call with argument adaptor is intentional.
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return B();
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}
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function D() {
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test_output += 'D';
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// Function call with argument adaptor is intentional.
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return C(1, 2);
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}
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function E() {
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test_output += 'E';
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return D();
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}
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function F() {
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test_output += 'F';
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return E();
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}
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return F();
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}
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var scenario_pos = 0;
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function DebuggerStatementHandler(exec_state) {
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while (true) {
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assertTrue(scenario_pos < test_scenario.length);
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var change_code = test_scenario[scenario_pos++];
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if (change_code == '=') {
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// Continue.
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return;
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}
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var frame = FindCallFrame(exec_state, change_code);
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// Throws if fails.
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Debug.LiveEdit.RestartFrame(frame);
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}
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}
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var saved_exception = null;
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function listener(event, exec_state, event_data, data) {
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if (saved_exception != null) {
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return;
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}
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if (event == Debug.DebugEvent.Break) {
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try {
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DebuggerStatementHandler(exec_state);
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} catch (e) {
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saved_exception = e;
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}
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} else {
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print("Other: " + event);
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}
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}
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Debug.setListener(listener);
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assertEquals("Capybara", TestCode());
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Debug.setListener(null);
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if (saved_exception) {
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print("Exception: " + saved_exception);
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print("Stack: " + saved_exception.stack);
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assertUnreachable();
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}
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print(test_output);
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assertEquals(expected_output, test_output);
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}
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TestCase('0==', "FEDCBA=A=");
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TestCase('1==', "FEDCBA=BA=");
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TestCase('2==', "FEDCBA=CBA=");
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TestCase('3==', "FEDCBA=DCBA=");
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TestCase('4==', "FEDCBA=EDCBA=");
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TestCase('5==', "FEDCBA=FEDCBA=");
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TestCase('=', "FEDCBA=");
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TestCase('C==', "FEDCBA=CBA=");
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TestCase('B=C=A=D==', "FEDCBA=BA=CBA=A=DCBA=");
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// Successive restarts don't work now and require additional fix.
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//TestCase('BCDE==', "FEDCBA=EDCBA=");
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//TestCase('BC=BCDE==', "FEDCBA=CBA=EDCBA=");
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//TestCase('EF==', "FEDCBA=FEDCBA=");
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