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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * This class wraps behaves almost identically to the normal Dart Map | 6 * This class wraps behaves almost identically to the normal Dart Map |
7 * implementation, with the following differences: | 7 * implementation, with the following differences: |
8 * | 8 * |
9 * * It allows null, NaN, boolean, list, and map keys. | 9 * * It allows null, NaN, boolean, list, and map keys. |
10 * * It defines `==` structurally. That is, `yamlMap1 == yamlMap2` if they have | 10 * * It defines `==` structurally. That is, `yamlMap1 == yamlMap2` if they have |
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22 | 22 |
23 bool containsValue(value) => _map.containsValue(value); | 23 bool containsValue(value) => _map.containsValue(value); |
24 bool containsKey(key) => _map.containsKey(_wrapKey(key)); | 24 bool containsKey(key) => _map.containsKey(_wrapKey(key)); |
25 operator [](key) => _map[_wrapKey(key)]; | 25 operator [](key) => _map[_wrapKey(key)]; |
26 operator []=(key, value) { _map[_wrapKey(key)] = value; } | 26 operator []=(key, value) { _map[_wrapKey(key)] = value; } |
27 putIfAbsent(key, ifAbsent()) => _map.putIfAbsent(_wrapKey(key), ifAbsent); | 27 putIfAbsent(key, ifAbsent()) => _map.putIfAbsent(_wrapKey(key), ifAbsent); |
28 remove(key) => _map.remove(_wrapKey(key)); | 28 remove(key) => _map.remove(_wrapKey(key)); |
29 void clear() => _map.clear(); | 29 void clear() => _map.clear(); |
30 void forEach(void f(key, value)) => | 30 void forEach(void f(key, value)) => |
31 _map.forEach((k, v) => f(_unwrapKey(k), v)); | 31 _map.forEach((k, v) => f(_unwrapKey(k), v)); |
32 Collection getKeys() => _map.getKeys().map(_unwrapKey); | 32 Collection get keys => _map.keys.map(_unwrapKey); |
33 Collection getValues() => _map.getValues(); | 33 Collection get values => _map.values; |
34 int get length => _map.length; | 34 int get length => _map.length; |
35 bool get isEmpty => _map.isEmpty; | 35 bool get isEmpty => _map.isEmpty; |
36 String toString() => _map.toString(); | 36 String toString() => _map.toString(); |
37 | 37 |
38 int get hashCode => _hashCode(_map); | 38 int get hashCode => _hashCode(_map); |
39 | 39 |
40 bool operator ==(other) { | 40 bool operator ==(other) { |
41 if (other is! YamlMap) return false; | 41 if (other is! YamlMap) return false; |
42 return deepEquals(this, other); | 42 return deepEquals(this, other); |
43 } | 43 } |
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88 } else if (parents.some((p) => p === obj)) { | 88 } else if (parents.some((p) => p === obj)) { |
89 return -1; | 89 return -1; |
90 } | 90 } |
91 | 91 |
92 parents.add(obj); | 92 parents.add(obj); |
93 try { | 93 try { |
94 if (obj == null) return 0; | 94 if (obj == null) return 0; |
95 if (obj == true) return 1; | 95 if (obj == true) return 1; |
96 if (obj == false) return 2; | 96 if (obj == false) return 2; |
97 if (obj is Map) { | 97 if (obj is Map) { |
98 return _hashCode(obj.getKeys(), parents) ^ | 98 return _hashCode(obj.keys, parents) ^ |
99 _hashCode(obj.getValues(), parents); | 99 _hashCode(obj.values, parents); |
100 } | 100 } |
101 if (obj is List) { | 101 if (obj is List) { |
102 // This is probably a really bad hash function, but presumably we'll get t
his | 102 // This is probably a really bad hash function, but presumably we'll get t
his |
103 // in the standard library before it actually matters. | 103 // in the standard library before it actually matters. |
104 int hash = 0; | 104 int hash = 0; |
105 for (var e in obj) { | 105 for (var e in obj) { |
106 hash ^= _hashCode(e, parents); | 106 hash ^= _hashCode(e, parents); |
107 } | 107 } |
108 return hash; | 108 return hash; |
109 } | 109 } |
110 return obj.hashCode; | 110 return obj.hashCode; |
111 } finally { | 111 } finally { |
112 parents.removeLast(); | 112 parents.removeLast(); |
113 } | 113 } |
114 } | 114 } |
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