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63 lines
1.5 KiB
Objective-C
63 lines
1.5 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 "ExtensionRegistry.h"
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@interface PBExtensionRegistry()
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@property (retain) NSDictionary* classMap;
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@end
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@implementation PBExtensionRegistry
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@synthesize classMap;
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- (void) dealloc {
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self.classMap = nil;
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}
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static PBExtensionRegistry* emptyRegistry = nil;
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+ (void) initialize {
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if (self == [PBExtensionRegistry class]) {
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emptyRegistry = [[PBExtensionRegistry alloc] initWithClassMap:[NSDictionary dictionary]];
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}
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}
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- (id) initWithClassMap:(NSDictionary*) map_{
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if ((self = [super init])) {
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self.classMap = map_;
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}
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return self;
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}
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- (id) keyForClass:(Class) clazz {
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return NSStringFromClass(clazz);
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}
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+ (PBExtensionRegistry*) emptyRegistry {
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return emptyRegistry;
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}
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- (id<PBExtensionField>) getExtension:(Class) clazz fieldNumber:(NSInteger) fieldNumber {
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NSDictionary* extensionMap = [classMap objectForKey:[self keyForClass:clazz]];
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return [extensionMap objectForKey:[NSNumber numberWithInteger:fieldNumber]];
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}
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@end
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