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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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unique_id = 1;
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function TestBase(name) {
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print("TestBase constructor: " + name);
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this.ChooseAnimal = eval(
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"/* " + unique_id + "*/\n" +
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"(function ChooseAnimal(callback) {\n " +
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" callback();\n" +
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" return 'Cat';\n" +
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"})\n"
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);
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// Prevents eval script caching.
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unique_id++;
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var script = Debug.findScript(this.ChooseAnimal);
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var orig_animal = "'Cat'";
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var patch_pos = script.source.indexOf(orig_animal);
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var new_animal_patch = "'Capybara'";
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var got_exception = false;
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var successfully_changed = false;
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// Should be called from Debug context.
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this.ScriptChanger = function() {
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assertEquals(false, successfully_changed, "applying patch second time");
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// Runs in debugger context.
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var change_log = new Array();
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try {
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Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos, orig_animal.length, new_animal_patch, change_log);
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} finally {
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print("Change log: " + JSON.stringify(change_log) + "\n");
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}
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successfully_changed = true;
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};
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}
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function Noop() {}
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function WrapInCatcher(f, holder) {
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return function() {
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delete holder[0];
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try {
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f();
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} catch (e) {
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if (e instanceof Debug.LiveEdit.Failure) {
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holder[0] = e;
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} else {
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throw e;
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}
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}
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};
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}
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function WrapInNativeCall(f) {
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return function() {
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return Debug.ExecuteInDebugContext(f, true);
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};
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}
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function WrapInDebuggerCall(f) {
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return function() {
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return Debug.ExecuteInDebugContext(f, false);
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};
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}
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function WrapInRestartProof(f) {
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var already_called = false;
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return function() {
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if (already_called) {
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return;
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}
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already_called = true;
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f();
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}
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}
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function WrapInConstructor(f) {
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return function() {
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return new function() {
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f();
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};
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}
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}
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// A series of tests. In each test we call ChooseAnimal function that calls
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// a callback that attempts to modify the function on the fly.
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test = new TestBase("First test ChooseAnimal without edit");
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assertEquals("Cat", test.ChooseAnimal(Noop));
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test = new TestBase("Test without function on stack");
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test.ScriptChanger();
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assertEquals("Capybara", test.ChooseAnimal(Noop));
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test = new TestBase("Test with function on stack");
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assertEquals("Capybara", test.ChooseAnimal(WrapInDebuggerCall(WrapInRestartProof(test.ScriptChanger))));
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test = new TestBase("Test with function on stack and with constructor frame");
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assertEquals("Capybara", test.ChooseAnimal(WrapInConstructor(WrapInDebuggerCall(WrapInRestartProof(test.ScriptChanger)))));
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test = new TestBase("Test with C++ frame above ChooseAnimal frame");
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exception_holder = {};
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assertEquals("Cat", test.ChooseAnimal(WrapInNativeCall(WrapInDebuggerCall(WrapInCatcher(test.ScriptChanger, exception_holder)))));
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assertTrue(!!exception_holder[0]);
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