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66 lines
2.7 KiB
66 lines
2.7 KiB
// 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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eval("function ChooseAnimal(p) {\n " +
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" if (p == 7) {\n" + // Use p
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" return;\n" +
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" }\n" +
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" return function Chooser() {\n" +
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" return 'Cat';\n" +
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" };\n" +
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"}\n");
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var old_closure = ChooseAnimal(19);
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assertEquals("Cat", old_closure());
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var script = Debug.findScript(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' + p";
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// We patch innermost function "Chooser".
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// However, this does not actually patch existing "Chooser" instances,
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// because old value of parameter "p" was not saved.
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// Instead it patches ChooseAnimal.
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var change_log = new Array();
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Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos, orig_animal.length, new_animal_patch, change_log);
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print("Change log: " + JSON.stringify(change_log) + "\n");
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var new_closure = ChooseAnimal(19);
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// New instance of closure is patched.
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assertEquals("Capybara19", new_closure());
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// Old instance of closure is not patched.
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assertEquals("Cat", old_closure());
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