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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
#define RED @true
#define BLACK @false
typedef NSNumber FLLRBColor;
@protocol FLLRBNode <NSObject>
- (id)copyWith:(id) aKey withValue:(id) aValue withColor:(FLLRBColor*) aColor withLeft:(id<FLLRBNode>)aLeft withRight:(id<FLLRBNode>)aRight;
- (id<FLLRBNode>) insertKey:(id) aKey forValue:(id)aValue withComparator:(NSComparator)aComparator;
- (id<FLLRBNode>) remove:(id) key withComparator:(NSComparator)aComparator;
- (int) count;
- (BOOL) isEmpty;
- (BOOL) inorderTraversal:(BOOL (^)(id key, id value))action;
- (BOOL) reverseTraversal:(BOOL (^)(id key, id value))action;
- (id<FLLRBNode>) min;
- (id) minKey;
- (id) maxKey;
- (BOOL) isRed;
- (int) check;
@property (nonatomic, strong) id key;
@property (nonatomic, strong) id value;
@property (nonatomic, strong) FLLRBColor* color;
@property (nonatomic, strong) id<FLLRBNode> left;
@property (nonatomic, strong) id<FLLRBNode> right;
@end
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