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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#import "GPBExtensionRegistry.h"
#import "GPBBootstrap.h"
#import "GPBDescriptor.h"
@implementation GPBExtensionRegistry {
NSMutableDictionary *mutableClassMap_;
}
- (instancetype)init {
if ((self = [super init])) {
mutableClassMap_ = [[NSMutableDictionary alloc] init];
}
return self;
}
- (void)dealloc {
[mutableClassMap_ release];
[super dealloc];
}
// Direct access is use for speed, to avoid even internally declaring things
// read/write, etc. The warning is enabled in the project to ensure code calling
// protos can turn on -Wdirect-ivar-access without issues.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdirect-ivar-access"
- (instancetype)copyWithZone:(NSZone *)zone {
GPBExtensionRegistry *result = [[[self class] allocWithZone:zone] init];
[result addExtensions:self];
return result;
}
- (void)addExtension:(GPBExtensionDescriptor *)extension {
if (extension == nil) {
return;
}
Class containingMessageClass = extension.containingMessageClass;
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)
[mutableClassMap_ objectForKey:containingMessageClass];
if (extensionMap == nil) {
// Use a custom dictionary here because the keys are numbers and conversion
// back and forth from NSNumber isn't worth the cost.
extensionMap = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, NULL,
&kCFTypeDictionaryValueCallBacks);
[mutableClassMap_ setObject:(id)extensionMap
forKey:(id<NSCopying>)containingMessageClass];
CFRelease(extensionMap);
}
ssize_t key = extension.fieldNumber;
CFDictionarySetValue(extensionMap, (const void *)key, extension);
}
- (GPBExtensionDescriptor *)extensionForDescriptor:(GPBDescriptor *)descriptor
fieldNumber:(NSInteger)fieldNumber {
Class messageClass = descriptor.messageClass;
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)
[mutableClassMap_ objectForKey:messageClass];
ssize_t key = fieldNumber;
GPBExtensionDescriptor *result =
(extensionMap
? CFDictionaryGetValue(extensionMap, (const void *)key)
: nil);
return result;
}
static void CopyKeyValue(const void *key, const void *value, void *context) {
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)context;
CFDictionarySetValue(extensionMap, key, value);
}
- (void)addExtensions:(GPBExtensionRegistry *)registry {
if (registry == nil) {
// In the case where there are no extensions just ignore.
return;
}
NSMutableDictionary *otherClassMap = registry->mutableClassMap_;
[otherClassMap enumerateKeysAndObjectsUsingBlock:^(id key, id value, BOOL * stop) {
#pragma unused(stop)
Class containingMessageClass = key;
CFMutableDictionaryRef otherExtensionMap = (CFMutableDictionaryRef)value;
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)
[mutableClassMap_ objectForKey:containingMessageClass];
if (extensionMap == nil) {
extensionMap = CFDictionaryCreateMutableCopy(kCFAllocatorDefault, 0, otherExtensionMap);
[mutableClassMap_ setObject:(id)extensionMap
forKey:(id<NSCopying>)containingMessageClass];
CFRelease(extensionMap);
} else {
CFDictionaryApplyFunction(otherExtensionMap, CopyKeyValue, extensionMap);
}
}];
}
#pragma clang diagnostic pop
@end
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