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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 FPath;
@interface FPruneForest : NSObject
+ (FPruneForest *)empty;
- (BOOL)prunesAnything;
- (BOOL)shouldPruneUnkeptDescendantsAtPath:(FPath *)path;
- (BOOL)shouldKeepPath:(FPath *)path;
- (BOOL)affectsPath:(FPath *)path;
- (FPruneForest *)child:(NSString *)childKey;
- (FPruneForest *)childAtPath:(FPath *)childKey;
- (FPruneForest *)prunePath:(FPath *)path;
- (FPruneForest *)keepPath:(FPath *)path;
- (FPruneForest *)keepAll:(NSSet *)children atPath:(FPath *)path;
- (FPruneForest *)pruneAll:(NSSet *)children atPath:(FPath *)path;
- (void)enumarateKeptNodesUsingBlock:(void (^)(FPath *path))block;
@end
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