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e3812af9c0
It's awkward to work on fn.dart in the examples directory so this CL moves it to /sky/framework. Also, I've merged the whole library into one file instead of using the |part| mechanism. The whole thing isn't that big. R=eseidel@chromium.org Review URL: https://codereview.chromium.org/987463002
42 lines
1.2 KiB
Dart
42 lines
1.2 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:mirrors';
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import 'dart:collection';
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final HashMap<ClassMirror, List> _fieldCache = new HashMap<ClassMirror, List>();
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List<Symbol> _getPublicFields(ClassMirror mirror) {
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return _fieldCache.putIfAbsent(mirror, () {
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List<Symbol> fields = new List<Symbol>();
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while (mirror != null) {
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var decls = mirror.declarations;
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fields.addAll(decls.keys.where((symbol) {
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var mirror = decls[symbol];
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if (mirror is! VariableMirror) {
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return false;
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}
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var vMirror = mirror as VariableMirror;
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return !vMirror.isPrivate && !vMirror.isStatic && !vMirror.isFinal;
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}));
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mirror = mirror.superclass;
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}
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return fields;
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});
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}
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void copyPublicFields(Object source, Object target) {
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assert(source.runtimeType == target.runtimeType);
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var sourceMirror = reflect(source);
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var targetMirror = reflect(target);
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for (var symbol in _getPublicFields(sourceMirror.type)) {
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targetMirror.setField(symbol, sourceMirror.getField(symbol).reflectee);
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}
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}
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