1// Copyright 2010 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --expose-debug-as debug 29// Get the Debug object exposed from the debug context global object. 30 31 32Debug = debug.Debug 33 34eval("function ChooseAnimal(p) {\n " + 35 " if (p == 7) {\n" + // Use p 36 " return;\n" + 37 " }\n" + 38 " return function Chooser() {\n" + 39 " return 'Cat';\n" + 40 " };\n" + 41 "}\n"); 42 43var old_closure = ChooseAnimal(19); 44 45assertEquals("Cat", old_closure()); 46 47var script = Debug.findScript(ChooseAnimal); 48 49var orig_animal = "'Cat'"; 50var patch_pos = script.source.indexOf(orig_animal); 51var new_animal_patch = "'Capybara' + p"; 52 53// We patch innermost function "Chooser". 54// However, this does not actually patch existing "Chooser" instances, 55// because old value of parameter "p" was not saved. 56// Instead it patches ChooseAnimal. 57var change_log = new Array(); 58Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos, orig_animal.length, new_animal_patch, change_log); 59print("Change log: " + JSON.stringify(change_log) + "\n"); 60 61var new_closure = ChooseAnimal(19); 62// New instance of closure is patched. 63assertEquals("Capybara19", new_closure()); 64 65// Old instance of closure is not patched. 66assertEquals("Cat", old_closure()); 67