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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.
*/
/**
* @fileoverview Implementation of an immutable SortedMap using a Left-leaning
* Red-Black Tree, adapted from the implementation in Mugs
* (http://mads379.github.com/mugs/) by Mads Hartmann Jensen
* (mads379@gmail.com).
*
* Original paper on Left-leaning Red-Black Trees:
* http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf
*
* Invariant 1: No red node has a red child
* Invariant 2: Every leaf path has the same number of black nodes
* Invariant 3: Only the left child can be red (left leaning)
*/
#import <Foundation/Foundation.h>
#import "FImmutableSortedDictionary.h"
#import "FLLRBNode.h"
@interface FTreeSortedDictionary : FImmutableSortedDictionary
@property (nonatomic, copy, readonly) NSComparator comparator;
@property (nonatomic, strong, readonly) id<FLLRBNode> root;
- (id)initWithComparator:(NSComparator)aComparator;
// Override methods to return subtype
- (FTreeSortedDictionary *) insertKey:(id)aKey withValue:(id)aValue;
- (FTreeSortedDictionary *) removeKey:(id)aKey;
@end
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