mirror of https://github.com/grpc/grpc-dart.git
48 lines
1.7 KiB
Dart
48 lines
1.7 KiB
Dart
// Copyright (c) 2020, the gRPC project authors. Please see the AUTHORS file
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// for details. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import 'codec.dart';
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/// Encloses classes related to the compression and decompression of messages.
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class CodecRegistry {
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CodecRegistry({List<Codec> codecs = const [IdentityCodec()]})
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: _codecs = {for (var codec in codecs) codec.encodingName: codec},
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_supportedEncodings = codecs.map((c) {
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if (c.encodingName.contains(',')) {
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throw ArgumentError.value(c.encodingName, 'codecs',
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'contains entries with names containing ","');
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}
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return c.encodingName;
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}).join(',') {
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if (_codecs.length != codecs.length) {
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throw ArgumentError.value(
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codecs, 'codecs', 'contains multiple entries with the same name');
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}
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}
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factory CodecRegistry.empty() => CodecRegistry(codecs: []);
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/// Key refers to the `encodingName` param from the [Codec].
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final Map<String, Codec> _codecs;
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final String _supportedEncodings;
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Codec? lookup(String codecName) {
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return _codecs[codecName];
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}
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String get supportedEncodings => _supportedEncodings;
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}
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