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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 "FNamedNode.h"
#import "FUtilities.h"
#import "FEmptyNode.h"
#import "FMaxNode.h"
#import "FIndex.h"
@interface FNamedNode ()
@property (nonatomic, strong, readwrite) NSString* name;
@property (nonatomic, strong, readwrite) id<FNode> node;
@end
@implementation FNamedNode
+ (FNamedNode *)nodeWithName:(NSString *)name node:(id<FNode>)node
{
return [[FNamedNode alloc] initWithName:name andNode:node];
}
- (id)initWithName:(NSString *)name andNode:(id <FNode>)node {
self = [super init];
if (self) {
self.name = name;
self.node = node;
}
return self;
}
- (id)copy
{
return self;
}
- (id)copyWithZone:(NSZone *)zone
{
return self;
}
+ (FNamedNode *)min {
static FNamedNode *min = nil;
static dispatch_once_t once;
dispatch_once(&once, ^{
min = [[FNamedNode alloc] initWithName:[FUtilities minName] andNode:[FEmptyNode emptyNode]];
});
return min;
}
+ (FNamedNode *)max {
static FNamedNode *max = nil;
static dispatch_once_t once;
dispatch_once(&once, ^{
max = [[FNamedNode alloc] initWithName:[FUtilities maxName] andNode:[FMaxNode maxNode]];
});
return max;
}
- (NSString *) description {
return [NSString stringWithFormat:@"NamedNode[%@] %@", self.name, self.node];
}
- (BOOL) isEqual:(id)object {
if (self == object) { return YES; }
if (object == nil || ![object isKindOfClass:[FNamedNode class]]) { return NO; }
FNamedNode *namedNode = object;
if (![self.name isEqualToString:namedNode.name]) { return NO; }
if (![self.node isEqual:namedNode.node]) { return NO; }
return YES;
}
- (NSUInteger) hash {
NSUInteger nameHash = [self.name hash];
NSUInteger nodeHash = [self.node hash];
NSUInteger result = 31 * nameHash + nodeHash;
return result;
}
@end
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