blob: fd2db37ed159b2111765c33fd5ecb7eeba25ed8c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*
* 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>
#import "FNode.h"
#import "FIndex.h"
#import "FNamedNode.h"
/**
* Represents a node together with an index. The index and node are updated in unison. In the case where the index
* does not affect the ordering (i.e. the ordering is identical to the key ordering) this class uses a fallback index
* to save memory. Everything operating on the index must special case the fallback index.
*/
@interface FIndexedNode : NSObject
@property (nonatomic, strong, readonly) id<FNode> node;
+ (FIndexedNode *)indexedNodeWithNode:(id<FNode>)node;
+ (FIndexedNode *)indexedNodeWithNode:(id<FNode>)node index:(id<FIndex>)index;
- (BOOL)hasIndex:(id<FIndex>)index;
- (FIndexedNode *)updateChild:(NSString *)key withNewChild:(id<FNode>)newChildNode;
- (FIndexedNode *)updatePriority:(id<FNode>)priority;
- (FNamedNode *)firstChild;
- (FNamedNode *)lastChild;
- (NSString *)predecessorForChildKey:(NSString *)childKey childNode:(id<FNode>)childNode index:(id<FIndex>)index;
- (void)enumerateChildrenReverse:(BOOL)reverse usingBlock:(void (^)(NSString *key, id<FNode> node, BOOL *stop))block;
- (NSEnumerator *)childEnumerator;
@end
|
