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78 lines
2.3 KiB
Objective-C
78 lines
2.3 KiB
Objective-C
// Copyright 2008 Cyrus Najmabadi
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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 "GeneratedMessage.h"
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@protocol PBExtensionField;
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/**
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* Generated message classes for message types that contain extension ranges
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* subclass this.
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*
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* <p>This class implements type-safe accessors for extensions. They
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* implement all the same operations that you can do with normal fields --
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* e.g. "has", "get", and "getCount" -- but for extensions. The extensions
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* are identified using instances of the class {@link GeneratedExtension};
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* the protocol compiler generates a static instance of this class for every
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* extension in its input. Through the magic of generics, all is made
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* type-safe.
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*
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* <p>For example, imagine you have the {@code .proto} file:
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*
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* <pre>
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* option java_class = "MyProto";
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*
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* message Foo {
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* extensions 1000 to max;
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* }
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*
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* extend Foo {
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* optional int32 bar;
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* }
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* </pre>
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*
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* <p>Then you might write code like:
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*
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* <pre>
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* MyProto.Foo foo = getFoo();
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* int i = foo.getExtension(MyProto.bar);
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* </pre>
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*
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* <p>See also {@link ExtendableBuilder}.
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*/
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@interface PBExtendableMessage : PBGeneratedMessage {
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@private
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NSMutableDictionary* extensionMap;
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NSMutableDictionary* extensionRegistry;
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}
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@property (retain) NSMutableDictionary* extensionMap;
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@property (retain) NSMutableDictionary* extensionRegistry;
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- (BOOL) hasExtension:(id<PBExtensionField>) extension;
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- (id) getExtension:(id<PBExtensionField>) extension;
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//@protected
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- (BOOL) extensionsAreInitialized;
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- (int32_t) extensionsSerializedSize;
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- (void) writeExtensionsToCodedOutputStream:(PBCodedOutputStream*) output
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from:(int32_t) startInclusive
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to:(int32_t) endExclusive;
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/* @internal */
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- (void) ensureExtensionIsRegistered:(id<PBExtensionField>) extension;
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@end
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