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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>
@class FImmutableSortedDictionary;
@class FNamedNode;
@protocol FNode;
@protocol FIndex<NSObject, NSCopying>
- (NSComparisonResult) compareKey:(NSString *)key1
andNode:(id<FNode>)node1
toOtherKey:(NSString *)key2
andNode:(id<FNode>)node2;
- (NSComparisonResult) compareKey:(NSString *)key1
andNode:(id<FNode>)node1
toOtherKey:(NSString *)key2
andNode:(id<FNode>)node2
reverse:(BOOL)reverse;
- (NSComparisonResult) compareNamedNode:(FNamedNode *)namedNode1 toNamedNode:(FNamedNode *)namedNode2;
- (BOOL) isDefinedOn:(id<FNode>)node;
- (BOOL) indexedValueChangedBetween:(id<FNode>)oldNode and:(id<FNode>)newNode;
- (FNamedNode*) minPost;
- (FNamedNode*) maxPost;
- (FNamedNode*) makePost:(id<FNode>)indexValue name:(NSString*)name;
- (NSString*) queryDefinition;
@end
@interface FIndex : NSObject
+ (id<FIndex>)indexFromQueryDefinition:(NSString *)string;
@end
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