v8/test/mjsunit/debug-liveedit-stack-padding.js
yangguo 75350f1ef0 Debugger: require debugger to be active when dealing with breaks.
This invariant will save us some head ache.
The changes to test-debug/DebugStub is due to the fact that it abuses
the ability to set break points in code that has no debug break slots.
This is now no longer possible.

R=ulan@chromium.org
BUG=v8:4132
LOG=N

Review URL: https://codereview.chromium.org/1181013007

Cr-Commit-Position: refs/heads/master@{#29038}
2015-06-16 07:11:21 +00:00

91 lines
2.9 KiB
JavaScript

// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug;
Debug.setListener(listener);
SlimFunction = eval(
"(function() {\n " +
" return 'Cat';\n" +
"})\n"
);
var script = Debug.findScript(SlimFunction);
Debug.setScriptBreakPointById(script.id, 1, 0);
var orig_animal = "'Cat'";
var patch_pos = script.source.indexOf(orig_animal);
var new_animal_patch = "'Capybara'";
debugger_handler = (function() {
var already_called = false;
return function() {
if (already_called) {
return;
}
already_called = true;
var change_log = new Array();
try {
Debug.LiveEdit.TestApi.ApplySingleChunkPatch(script, patch_pos,
orig_animal.length, new_animal_patch, change_log);
} finally {
print("Change log: " + JSON.stringify(change_log) + "\n");
}
};
})();
var saved_exception = null;
function listener(event, exec_state, event_data, data) {
if (event == Debug.DebugEvent.Break) {
try {
debugger_handler();
} catch (e) {
saved_exception = e;
}
} else {
print("Other: " + event);
}
}
var animal = SlimFunction();
if (saved_exception) {
print("Exception: " + saved_exception);
assertUnreachable();
}
assertEquals("Capybara", animal);
Debug.setListener(null);