Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 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 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 28 | // Flags: --expose-debug-as debug --noalways-opt |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 29 | // Get the Debug object exposed from the debug context global object. |
| 30 | |
| 31 | |
| 32 | Debug = debug.Debug |
| 33 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 34 | eval("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"); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 42 | |
| 43 | var old_closure = ChooseAnimal(19); |
| 44 | |
| 45 | assertEquals("Cat", old_closure()); |
| 46 | |
| 47 | var script = Debug.findScript(ChooseAnimal); |
| 48 | |
| 49 | var orig_animal = "'Cat'"; |
| 50 | var patch_pos = script.source.indexOf(orig_animal); |
| 51 | var 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. |
| 57 | var change_log = new Array(); |
| 58 | Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos, orig_animal.length, new_animal_patch, change_log); |
| 59 | print("Change log: " + JSON.stringify(change_log) + "\n"); |
| 60 | |
| 61 | var new_closure = ChooseAnimal(19); |
| 62 | // New instance of closure is patched. |
| 63 | assertEquals("Capybara19", new_closure()); |
| 64 | |
| 65 | // Old instance of closure is not patched. |
| 66 | assertEquals("Cat", old_closure()); |