| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of protobuf; |
| |
| class PbMap<K, V> extends MapBase<K, V> { |
| final int? keyFieldType; |
| final int? valueFieldType; |
| |
| static const int keyFieldNumber = 1; |
| static const int valueFieldNumber = 2; |
| |
| final Map<K, V> wrappedMap; |
| |
| bool _isReadonly = false; |
| |
| // The provided [info] will be ignored. |
| PbMap(this.keyFieldType, this.valueFieldType, [BuilderInfo? info]) |
| : wrappedMap = <K, V>{}; |
| |
| PbMap.unmodifiable(PbMap other) |
| : keyFieldType = other.keyFieldType, |
| valueFieldType = other.valueFieldType, |
| wrappedMap = Map.unmodifiable(other.wrappedMap), |
| _isReadonly = other._isReadonly; |
| |
| @override |
| V? operator [](Object? key) => wrappedMap[key]; |
| |
| @override |
| void operator []=(K key, V value) { |
| if (_isReadonly) { |
| throw UnsupportedError('Attempted to change a read-only map field'); |
| } |
| _checkNotNull(key); |
| _checkNotNull(value); |
| wrappedMap[key] = value; |
| } |
| |
| /// A [PbMap] is equal to another [PbMap] with equal key/value |
| /// pairs in any order. |
| @override |
| bool operator ==(other) { |
| if (identical(other, this)) { |
| return true; |
| } |
| if (other is! PbMap) { |
| return false; |
| } |
| if (other.length != length) { |
| return false; |
| } |
| for (final key in keys) { |
| if (!other.containsKey(key)) { |
| return false; |
| } |
| } |
| for (final key in keys) { |
| if (other[key] != this[key]) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /// A [PbMap] is equal to another [PbMap] with equal key/value |
| /// pairs in any order. Then, the `hashCode` is guaranteed to be the same. |
| @override |
| int get hashCode { |
| return wrappedMap.entries |
| .fold(0, (h, entry) => h ^ _HashUtils._hash2(entry.key, entry.value)); |
| } |
| |
| @override |
| void clear() { |
| if (_isReadonly) { |
| throw UnsupportedError('Attempted to change a read-only map field'); |
| } |
| wrappedMap.clear(); |
| } |
| |
| @override |
| Iterable<K> get keys => wrappedMap.keys; |
| |
| @override |
| V? remove(Object? key) { |
| if (_isReadonly) { |
| throw UnsupportedError('Attempted to change a read-only map field'); |
| } |
| return wrappedMap.remove(key); |
| } |
| |
| /* |
| void _mergeEntry(BuilderInfo mapEntryMeta, CodedBufferReader input, |
| [ExtensionRegistry? registry]) { |
| var length = input.readInt32(); |
| var oldLimit = input._currentLimit; |
| input._currentLimit = input._bufferPos + length; |
| final entryFieldSet = FieldSet(null, mapEntryMeta, null); |
| _mergeFromCodedBufferReader(mapEntryMeta, entryFieldSet, input, registry!); |
| input.checkLastTagWas(0); |
| input._currentLimit = oldLimit; |
| var key = entryFieldSet.values[0] ?? mapEntryMeta.byIndex[0].makeDefault!(); |
| var value = |
| entryFieldSet.values[1] ?? mapEntryMeta.byIndex[1].makeDefault!(); |
| wrappedMap[key] = value; |
| } |
| */ |
| |
| void _checkNotNull(Object? val) { |
| if (val == null) { |
| throw ArgumentError("Can't add a null to a map field"); |
| } |
| } |
| |
| PbMap freeze() { |
| _isReadonly = true; |
| if (isGroupOrMessageFieldType(valueFieldType!)) { |
| for (var subMessage in values as Iterable<GeneratedMessage>) { |
| subMessage.freeze(); |
| } |
| } |
| return this; |
| } |
| } |