Matthias Hausner
1a6d1eca32
Allow members of patch classes to be annotated with @patch. The VM ignores the annotation. I simply replaces the original method if the name matches, or reports an error if field names match. Adding a bit is_patched to members to do more checking remains a TODO. There are currently no unused bits available, and I don’t want to increase the size of Function objects for this. BUG= R=asiva@google.com Review URL: https://codereview.chromium.org/2230383003 .
43 lines
1.7 KiB
Dart
43 lines
1.7 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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@patch class Timer {
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@patch static Timer _createTimer(Duration duration, void callback()) {
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// TODO(iposva): Remove _TimerFactory and use VMLibraryHooks exclusively.
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if (_TimerFactory._factory == null) {
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_TimerFactory._factory = VMLibraryHooks.timerFactory;
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}
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if (_TimerFactory._factory == null) {
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throw new UnsupportedError("Timer interface not supported.");
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}
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int milliseconds = duration.inMilliseconds;
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if (milliseconds < 0) milliseconds = 0;
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return _TimerFactory._factory(milliseconds, (_) { callback(); }, false);
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}
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@patch static Timer _createPeriodicTimer(Duration duration,
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void callback(Timer timer)) {
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// TODO(iposva): Remove _TimerFactory and use VMLibraryHooks exclusively.
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if (_TimerFactory._factory == null) {
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_TimerFactory._factory = VMLibraryHooks.timerFactory;
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}
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if (_TimerFactory._factory == null) {
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throw new UnsupportedError("Timer interface not supported.");
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}
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int milliseconds = duration.inMilliseconds;
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if (milliseconds < 0) milliseconds = 0;
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return _TimerFactory._factory(milliseconds, callback, true);
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}
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}
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typedef Timer _TimerFactoryClosure(int milliseconds,
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void callback(Timer timer),
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bool repeating);
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// Warning: Dartium sets _TimerFactory._factory instead of setting things up
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// through VMLibraryHooks.timerFactory.
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class _TimerFactory {
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static _TimerFactoryClosure _factory;
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}
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