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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 "FClock.h"
@implementation FSystemClock
- (NSTimeInterval)currentTime {
return [[NSDate date] timeIntervalSince1970];
}
+ (FSystemClock *)clock {
static dispatch_once_t onceToken;
static FSystemClock *clock;
dispatch_once(&onceToken, ^{
clock = [[FSystemClock alloc] init];
});
return clock;
}
@end
@interface FOffsetClock ()
@property (nonatomic, strong) id<FClock> clock;
@property (nonatomic) NSTimeInterval offset;
@end
@implementation FOffsetClock
- (NSTimeInterval)currentTime {
return [self.clock currentTime] + self.offset;
}
- (id)initWithClock:(id<FClock>)clock offset:(NSTimeInterval)offset {
self = [super init];
if (self != nil) {
self->_clock = clock;
self->_offset = offset;
}
return self;
}
@end
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