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88 lines
3.6 KiB
88 lines
3.6 KiB
4 months ago
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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import <Foundation/Foundation.h>
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@class GPBDescriptor;
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@class GPBExtensionDescriptor;
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NS_ASSUME_NONNULL_BEGIN
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/**
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* A table of known extensions, searchable by name or field number. When
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* parsing a protocol message that might have extensions, you must provide a
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* GPBExtensionRegistry in which you have registered any extensions that you
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* want to be able to parse. Otherwise, those extensions will just be treated
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* like unknown fields.
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*
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* The *Root classes provide `+extensionRegistry` for the extensions defined
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* in a given file *and* all files it imports. You can also create a
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* GPBExtensionRegistry, and merge those registries to handle parsing
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* extensions defined from non overlapping files.
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*
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* ```
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* GPBExtensionRegistry *registry = [[MyProtoFileRoot extensionRegistry] copy];
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* [registry addExtension:[OtherMessage neededExtension]]; // Not in MyProtoFile
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* NSError *parseError;
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* MyMessage *msg = [MyMessage parseData:data extensionRegistry:registry error:&parseError];
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* ```
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**/
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@interface GPBExtensionRegistry : NSObject<NSCopying>
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/**
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* Adds the given GPBExtensionDescriptor to this registry.
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*
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* @param extension The extension description to add.
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**/
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- (void)addExtension:(GPBExtensionDescriptor *)extension;
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/**
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* Adds all the extensions from another registry to this registry.
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*
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* @param registry The registry to merge into this registry.
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**/
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- (void)addExtensions:(GPBExtensionRegistry *)registry;
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/**
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* Looks for the extension registered for the given field number on a given
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* GPBDescriptor.
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*
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* @param descriptor The descriptor to look for a registered extension on.
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* @param fieldNumber The field number of the extension to look for.
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*
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* @return The registered GPBExtensionDescriptor or nil if none was found.
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**/
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- (nullable GPBExtensionDescriptor *)extensionForDescriptor:(GPBDescriptor *)descriptor
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fieldNumber:(NSInteger)fieldNumber;
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@end
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NS_ASSUME_NONNULL_END
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