95 lines
2.4 KiB
Objective-C
95 lines
2.4 KiB
Objective-C
/*
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* Copyright 2017 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "FNamedNode.h"
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#import "FUtilities.h"
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#import "FEmptyNode.h"
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#import "FMaxNode.h"
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#import "FIndex.h"
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@interface FNamedNode ()
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@property (nonatomic, strong, readwrite) NSString* name;
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@property (nonatomic, strong, readwrite) id<FNode> node;
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@end
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@implementation FNamedNode
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+ (FNamedNode *)nodeWithName:(NSString *)name node:(id<FNode>)node
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{
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return [[FNamedNode alloc] initWithName:name andNode:node];
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}
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- (id)initWithName:(NSString *)name andNode:(id <FNode>)node {
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self = [super init];
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if (self) {
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self.name = name;
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self.node = node;
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}
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return self;
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}
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- (id)copy
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{
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return self;
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}
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- (id)copyWithZone:(NSZone *)zone
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{
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return self;
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}
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+ (FNamedNode *)min {
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static FNamedNode *min = nil;
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static dispatch_once_t once;
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dispatch_once(&once, ^{
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min = [[FNamedNode alloc] initWithName:[FUtilities minName] andNode:[FEmptyNode emptyNode]];
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});
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return min;
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}
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+ (FNamedNode *)max {
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static FNamedNode *max = nil;
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static dispatch_once_t once;
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dispatch_once(&once, ^{
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max = [[FNamedNode alloc] initWithName:[FUtilities maxName] andNode:[FMaxNode maxNode]];
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});
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return max;
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}
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- (NSString *) description {
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return [NSString stringWithFormat:@"NamedNode[%@] %@", self.name, self.node];
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}
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- (BOOL) isEqual:(id)object {
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if (self == object) { return YES; }
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if (object == nil || ![object isKindOfClass:[FNamedNode class]]) { return NO; }
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FNamedNode *namedNode = object;
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if (![self.name isEqualToString:namedNode.name]) { return NO; }
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if (![self.node isEqual:namedNode.node]) { return NO; }
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return YES;
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}
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- (NSUInteger) hash {
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NSUInteger nameHash = [self.name hash];
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NSUInteger nodeHash = [self.node hash];
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NSUInteger result = 31 * nameHash + nodeHash;
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return result;
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}
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@end
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