ObjFW  Diff

#import "OFMessagePackRepresentation.h"

OF_ASSUME_NONNULL_BEGIN

@class OFArray OF_GENERIC(ObjectType);

#ifdef OF_HAVE_BLOCKS
typedef void (^of_dictionary_enumeration_block_t)(id key, id object,
     bool *stop);
typedef bool (^of_dictionary_filter_block_t)(id key, id object);
typedef id _Nonnull (^of_dictionary_map_block_t)(id key, id object);
#endif

/**
 * @class OFDictionary OFDictionary.h ObjFW/OFDictionary.h
 *
 * @brief An abstract class for storing objects in a dictionary.
 *

/**
 * @brief Creates a new OFDictionary with the specified key and object.
 *
 * @param key The key
 * @param object The object
 * @return A new autoreleased OFDictionary
 */
+ (instancetype)dictionaryWithObject: (ObjectType)object
			      forKey: (KeyType)key;

/**
 * @brief Creates a new OFDictionary with the specified keys and objects.
 *
 * @param keys An array of keys
 * @param objects An array of objects
 * @return A new autoreleased OFDictionary

 * @brief Initializes an already allocated OFDictionary with the specified key
 *	  and object.
 *
 * @param key The key
 * @param object The object
 * @return An initialized OFDictionary
 */
- (instancetype)initWithObject: (ObjectType)object
			forKey: (KeyType)key;

/**
 * @brief Initializes an already allocated OFDictionary with the specified keys
 *	  and objects.
 *
 * @param keys An array of keys
 * @param objects An array of objects

 * @brief Initializes an already allocated OFDictionary with the specified key
 *	  and va_list.
 *
 * @param firstKey The first key
 * @param arguments A va_list of the other arguments
 * @return An initialized OFDictionary
 */
- (instancetype)initWithKey: (KeyType)firstKey
		  arguments: (va_list)arguments;

/**
 * @brief Returns the object for the given key or `nil` if the key was not
 *	  found.
 *
 * @warning The returned object is *not* retained and autoreleased for
 *	    performance reasons!

 *
 * This is equivalent to OFMutableDictionary#setObject:forKey:. If the
 * dictionary is immutable, an @ref OFUndefinedKeyException is thrown.
 *
 * @param key The key to set
 * @param value The value to set the key to
 */
- (void)setValue: (nullable id)value
	  forKey: (OFString *)key;

/**
 * @brief Checks whether the dictionary contains an object equal to the
 *	  specified object.
 *
 * @param object The object which is checked for being in the dictionary
 * @return A boolean whether the dictionary contains the specified object

#ifdef OF_HAVE_BLOCKS
/**
 * @brief Executes a block for each key / object pair.
 *
 * @param block The block to execute for each key / object pair.
 */
- (void)enumerateKeysAndObjectsUsingBlock:
    (of_dictionary_enumeration_block_t)block;

/**
 * @brief Creates a new dictionary, mapping each object using the specified
 *	  block.
 *
 * @param block A block which maps an object for each object
 * @return A new autoreleased OFDictionary
 */
- (OFDictionary OF_GENERIC(KeyType, id) *)mappedDictionaryUsingBlock:
    (of_dictionary_map_block_t)block;

/**
 * @brief Creates a new dictionary, only containing the objects for which the
 *	  block returns true.
 *
 * @param block A block which determines if the object should be in the new
 *		dictionary
 * @return A new autoreleased OFDictionary
 */
- (OFDictionary OF_GENERIC(KeyType, ObjectType) *)filteredDictionaryUsingBlock:
    (of_dictionary_filter_block_t)block;
#endif
#if !defined(OF_HAVE_GENERICS) && !defined(DOXYGEN)
# undef KeyType
# undef ObjectType
#endif
@end