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| 1 library reflect; |
| 2 |
| 3 import 'dart:mirrors'; |
| 4 import 'dart:collection'; |
| 5 |
| 6 HashMap<ClassMirror, List> _fieldCache = new HashMap<ClassMirror, List>(); |
| 7 |
| 8 List<Symbol> _getPublicFields(ClassMirror mirror) { |
| 9 var fields = _fieldCache[mirror]; |
| 10 if (fields == null) { |
| 11 fields = new List<Symbol>(); |
| 12 _fieldCache[mirror] = fields; |
| 13 |
| 14 while (mirror != null) { |
| 15 var decls = mirror.declarations; |
| 16 fields.addAll(decls.keys.where((symbol) { |
| 17 var mirror = decls[symbol]; |
| 18 if (mirror is! VariableMirror) { |
| 19 return false; |
| 20 } |
| 21 |
| 22 var vMirror = mirror as VariableMirror; |
| 23 return !vMirror.isPrivate && !vMirror.isStatic && !vMirror.isFinal; |
| 24 })); |
| 25 |
| 26 mirror = mirror.superclass; |
| 27 } |
| 28 } |
| 29 |
| 30 return fields; |
| 31 } |
| 32 |
| 33 void copyPublicFields(Object source, Object target) { |
| 34 assert(source.runtimeType == target.runtimeType); |
| 35 |
| 36 var sourceMirror = reflect(source); |
| 37 var targetMirror = reflect(target); |
| 38 for (var symbol in _getPublicFields(sourceMirror.type)) { |
| 39 targetMirror.setField(symbol, sourceMirror.getField(symbol).reflectee); |
| 40 } |
| 41 } |
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