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//
// SDLPrioritizedOutputCollection.m
// SmartDeviceLink
//
#import "SDLPrioritizedObjectCollection.h"
#import "SDLObjectWithPriority.h"
NS_ASSUME_NONNULL_BEGIN
@interface SDLPrioritizedObjectCollection () {
NSMutableArray<id> *privateArray;
}
@end
@implementation SDLPrioritizedObjectCollection
- (instancetype)init {
self = [super init];
if (self) {
privateArray = [NSMutableArray<id> new];
}
return self;
}
- (void)addObject:(nullable id)object withPriority:(NSInteger)priority {
if (object == nil || [[NSNull null] isEqual:object]) {
return;
}
SDLObjectWithPriority *newWrapper = [SDLObjectWithPriority objectWithObject:object priority:priority];
@synchronized(privateArray) {
// Find correct place to insert.
// Sorted in descending order.
BOOL lowerPriorityFound = NO;
NSUInteger currentCount = privateArray.count;
for (NSUInteger x = 0; x < currentCount; x++) {
SDLObjectWithPriority *o = privateArray[x];
if (o.priority <= priority) {
lowerPriorityFound = YES;
[privateArray insertObject:newWrapper atIndex:x];
break;
}
}
if (!lowerPriorityFound) {
[privateArray addObject:newWrapper];
}
}
}
- (nullable instancetype)nextObject {
if (privateArray.count == 0) {
return nil;
}
SDLObjectWithPriority *obj = nil;
@synchronized(privateArray) {
obj = (SDLObjectWithPriority *)[privateArray lastObject];
[privateArray removeLastObject];
}
return obj.object;
}
@end
NS_ASSUME_NONNULL_END
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