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| 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 --noalways-opt | |
| 29 // Get the Debug object exposed from the debug context global object. | |
| 30 | |
| 31 | |
| 32 Debug = debug.Debug | |
| 33 | |
| 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"); | |
| 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.leng
th, 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()); | |
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