/*
* Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_CONSTANT_MACROS
# define __STDC_CONSTANT_MACROS
#endif
#include <stdarg.h>
#import "OFObject.h"
#import "OFCollection.h"
#import "OFEnumerator.h"
#import "OFSerialization.h"
#import "OFJSONRepresentation.h"
#import "OFMessagePackRepresentation.h"
OF_ASSUME_NONNULL_BEGIN
/** @file */
@class OFString;
enum {
OF_ARRAY_SKIP_EMPTY = 1,
OF_ARRAY_SORT_DESCENDING = 2
};
#ifdef OF_HAVE_BLOCKS
/**
* @brief A block for enumerating an OFArray.
*
* @param object The current object
* @param index The index of the current object
* @param stop A pointer to a variable that can be set to true to stop the
* enumeration
*/
typedef void (^of_array_enumeration_block_t)(id object, size_t index,
bool *stop);
/**
* @brief A block for filtering an OFArray.
*
* @param object The object to inspect
* @param index The index of the object to inspect
* @return Whether the object should be in the filtered array
*/
typedef bool (^of_array_filter_block_t)(id object, size_t index);
/**
* @brief A block for mapping objects to objects in an OFArray.
*
* @param object The object to map
* @param index The index of the object to map
* @return The object to map to
*/
typedef id _Nonnull (^of_array_map_block_t)(id object, size_t index);
/**
* @brief A block for folding an OFArray.
*
* @param left The object to which the object has been folded so far
* @param right The object that should be added to the left object
* @return The left and right side folded into one object
*/
typedef id _Nullable (^of_array_fold_block_t)(id _Nullable left, id right);
#endif
/**
* @class OFArray OFArray.h ObjFW/OFArray.h
*
* @brief An abstract class for storing objects in an array.
*
* @note Subclasses must implement @ref count and @ref objectAtIndex:.
*/
@interface OFArray OF_GENERIC(ObjectType): OFObject <OFCopying,
OFMutableCopying, OFCollection, OFSerialization, OFJSONRepresentation,
OFMessagePackRepresentation>
#if !defined(OF_HAVE_GENERICS) && !defined(DOXYGEN)
# define ObjectType id
#endif
/**
* @brief The objects of the array as a C array.
*
* The result is valid until the autorelease pool is released. If you want to
* use the result outside the scope of the current autorelease pool, you have to
* copy it.
*/
@property (readonly, nonatomic)
ObjectType const __unsafe_unretained _Nonnull *_Nonnull objects;
/**
* @brief The first object of the array or `nil`.
*
* @warning The returned object is *not* retained and autoreleased for
* performance reasons!
*/
@property OF_NULLABLE_PROPERTY (readonly, nonatomic) ObjectType firstObject;
/**
* @brief The last object of the array or `nil`.
*
* @warning The returned object is *not* retained and autoreleased for
* performance reasons!
*/
@property OF_NULLABLE_PROPERTY (readonly, nonatomic) ObjectType lastObject;
/**
* @brief The array sorted in ascending order.
*/
@property (readonly, nonatomic) OFArray OF_GENERIC(ObjectType) *sortedArray;
/**
* @brief The array with the order reversed.
*/
@property (readonly, nonatomic) OFArray OF_GENERIC(ObjectType) *reversedArray;
/**
* @brief Creates a new OFArray.
*
* @return A new autoreleased OFArray
*/
+ (instancetype)array;
/**
* @brief Creates a new OFArray with the specified object.
*
* @param object An object
* @return A new autoreleased OFArray
*/
+ (instancetype)arrayWithObject: (ObjectType)object;
/**
* @brief Creates a new OFArray with the specified objects, terminated by `nil`.
*
* @param firstObject The first object in the array
* @return A new autoreleased OFArray
*/
+ (instancetype)arrayWithObjects: (ObjectType)firstObject, ... OF_SENTINEL;
/**
* @brief Creates a new OFArray with the objects from the specified array.
*
* @param array An array
* @return A new autoreleased OFArray
*/
+ (instancetype)arrayWithArray: (OFArray OF_GENERIC(ObjectType) *)array;
/**
* @brief Creates a new OFArray with the objects from the specified C array of
* the specified length.
*
* @param objects A C array of objects
* @param count The length of the C array
* @return A new autoreleased OFArray
*/
+ (instancetype)
arrayWithObjects: (ObjectType const _Nonnull *_Nonnull)objects
count: (size_t)count;
/**
* @brief Initializes an OFArray with the specified object.
*
* @param object An object
* @return An initialized OFArray
*/
- (instancetype)initWithObject: (ObjectType)object;
/**
* @brief Initializes an OFArray with the specified objects.
*
* @param firstObject The first object
* @return An initialized OFArray
*/
- (instancetype)initWithObjects: (ObjectType)firstObject, ... OF_SENTINEL;
/**
* @brief Initializes an OFArray with the specified object and a va_list.
*
* @param firstObject The first object
* @param arguments A va_list
* @return An initialized OFArray
*/
- (instancetype)initWithObject: (ObjectType)firstObject
arguments: (va_list)arguments;
/**
* @brief Initializes an OFArray with the objects from the specified array.
*
* @param array An array
* @return An initialized OFArray
*/
- (instancetype)initWithArray: (OFArray OF_GENERIC(ObjectType) *)array;
/**
* @brief Initializes an OFArray with the objects from the specified C array of
* the specified length.
*
* @param objects A C array of objects
* @param count The length of the C array
* @return An initialized OFArray
*/
- (instancetype)initWithObjects: (ObjectType const _Nonnull *_Nonnull)objects
count: (size_t)count;
/**
* @brief Returns an OFEnumerator to enumerate through all objects of the array.
*
* @return An OFEnumerator to enumerate through all objects of the array
*/
- (OFEnumerator OF_GENERIC(ObjectType) *)objectEnumerator;
/**
* @brief Returns the object at the specified index in the array.
*
* @warning The returned object is *not* retained and autoreleased for
* performance reasons!
*
* @param index The index of the object to return
* @return The object at the specified index in the array
*/
- (ObjectType)objectAtIndex: (size_t)index;
- (ObjectType)objectAtIndexedSubscript: (size_t)index;
/**
* @brief Returns the value for the specified key
*
* A new array with the value for the specified key for each object is
* returned.
*
* The special key `@count` can be used to retrieve the count as an OFNumber.
*
* @note Any nil values are replaced with @ref OFNull!
*
* @param key The key of the value to return
* @return The value for the specified key
*/
- (nullable id)valueForKey: (OFString *)key;
/**
* @brief Set the value for the specified key
*
* @ref setValue:forKey: is called for each object in the array.
*
* @note A @ref OFNull value is translated to nil!
*
* @param value The value for the specified key
* @param key The key of the value to set
*/
- (void)setValue: (nullable id)value forKey: (OFString *)key;
/**
* @brief Copies the objects at the specified range to the specified buffer.
*
* @param buffer The buffer to copy the objects to
* @param range The range to copy
*/
- (void)getObjects: (ObjectType __unsafe_unretained _Nonnull *_Nonnull)buffer
inRange: (OFRange)range;
/**
* @brief Returns the index of the first object that is equivalent to the
* specified object or `OFNotFound` if it was not found.
*
* @param object The object whose index is returned
* @return The index of the first object equivalent to the specified object
* or `OFNotFound` if it was not found
*/
- (size_t)indexOfObject: (ObjectType)object;
/**
* @brief Returns the index of the first object that has the same address as the
* specified object or `OFNotFound` if it was not found.
*
* @param object The object whose index is returned
* @return The index of the first object that has the same address as
* the specified object or `OFNotFound` if it was not found
*/
- (size_t)indexOfObjectIdenticalTo: (ObjectType)object;
/**
* @brief Checks whether the array contains an object equal to the specified
* object.
*
* @param object The object which is checked for being in the array
* @return A boolean whether the array contains the specified object
*/
- (bool)containsObject: (ObjectType)object;
/**
* @brief Checks whether the array contains an object with the specified
* address.
*
* @param object The object which is checked for being in the array
* @return A boolean whether the array contains an object with the specified
* address
*/
- (bool)containsObjectIdenticalTo: (ObjectType)object;
/**
* @brief Returns the objects in the specified range as a new OFArray.
*
* @param range The range for the subarray
* @return The subarray as a new autoreleased OFArray
*/
- (OFArray OF_GENERIC(ObjectType) *)objectsInRange: (OFRange)range;
/**
* @brief Creates a string by joining all objects of the array.
*
* @param separator The string with which the objects should be joined
* @return A string containing all objects joined by the separator
*/
- (OFString *)componentsJoinedByString: (OFString *)separator;
/**
* @brief Creates a string by joining all objects of the array.
*
* @param separator The string with which the objects should be joined
* @param options Options according to which the objects should be joined.@n
* Possible values are:
* Value | Description
* ----------------------|----------------------
* `OF_ARRAY_SKIP_EMPTY` | Skip empty components
* @return A string containing all objects joined by the separator
*/
- (OFString *)componentsJoinedByString: (OFString *)separator
options: (int)options;
/**
* @brief Creates a string by calling the selector on all objects of the array
* and joining the strings returned by calling the selector.
*
* @param separator The string with which the objects should be joined
* @param selector The selector to perform on the objects
* @return A string containing all objects joined by the separator
*/
- (OFString *)componentsJoinedByString: (OFString *)separator
usingSelector: (SEL)selector;
/**
* @brief Creates a string by calling the selector on all objects of the array
* and joining the strings returned by calling the selector.
*
* @param separator The string with which the objects should be joined
* @param selector The selector to perform on the objects
* @param options Options according to which the objects should be joined.@n
* Possible values are:
* Value | Description
* ----------------------|----------------------
* `OF_ARRAY_SKIP_EMPTY` | Skip empty components
* @return A string containing all objects joined by the separator
*/
- (OFString *)componentsJoinedByString: (OFString *)separator
usingSelector: (SEL)selector
options: (int)options;
/**
* @brief Performs the specified selector on all objects in the array.
*
* @param selector The selector to perform on all objects in the array
*/
- (void)makeObjectsPerformSelector: (SEL)selector;
/**
* @brief Performs the specified selector on all objects in the array with the
* specified object.
*
* @param selector The selector to perform on all objects in the array
* @param object The object to perform the selector with on all objects in the
* array
*/
- (void)makeObjectsPerformSelector: (SEL)selector
withObject: (nullable id)object;
/**
* @brief Returns a copy of the array sorted using the specified selector and
* options.
*
* @param selector The selector to use to sort the array. It's signature
* should be the same as that of -[compare:].
* @param options The options to use when sorting the array.@n
* Possible values are:
* Value | Description
* ---------------------------|-------------------------
* `OF_ARRAY_SORT_DESCENDING` | Sort in descending order
* @return A sorted copy of the array
*/
- (OFArray OF_GENERIC(ObjectType) *)sortedArrayUsingSelector: (SEL)selector
options: (int)options;
#ifdef OF_HAVE_BLOCKS
/**
* @brief Returns a copy of the array sorted using the specified selector and
* options.
*
* @param comparator The comparator to use to sort the array
* @param options The options to use when sorting the array.@n
* Possible values are:
* Value | Description
* ---------------------------|-------------------------
* `OF_ARRAY_SORT_DESCENDING` | Sort in descending order
* @return A sorted copy of the array
*/
- (OFArray OF_GENERIC(ObjectType) *)
sortedArrayUsingComparator: (OFComparator)comparator
options: (int)options;
#endif
/**
* @brief Creates a new array with the specified object added.
*
* @param object The object to add
* @return A new array with the specified object added
*/
- (OFArray OF_GENERIC(ObjectType) *)arrayByAddingObject: (ObjectType)object;
/**
* @brief Creates a new array with the objects from the specified array added.
*
* @param array The array with objects to add
* @return A new array with the objects from the specified array added
*/
- (OFArray OF_GENERIC(ObjectType) *)arrayByAddingObjectsFromArray:
(OFArray OF_GENERIC(ObjectType) *)array;
/**
* @brief Creates a new array with the specified object removed.
*
* @param object The object to remove
* @return A new array with the specified object removed
*/
- (OFArray OF_GENERIC(ObjectType) *)arrayByRemovingObject: (ObjectType)object;
#ifdef OF_HAVE_BLOCKS
/**
* @brief Executes a block for each object.
*
* @param block The block to execute for each object
*/
- (void)enumerateObjectsUsingBlock: (of_array_enumeration_block_t)block;
/**
* @brief Creates a new array, mapping each object using the specified block.
*
* @param block A block which maps an object for each object
* @return A new, autoreleased OFArray
*/
- (OFArray *)mappedArrayUsingBlock: (of_array_map_block_t)block;
/**
* @brief Creates a new array, only containing the objects for which the block
* returns true.
*
* @param block A block which determines if the object should be in the new
* array
* @return A new, autoreleased OFArray
*/
- (OFArray OF_GENERIC(ObjectType) *)filteredArrayUsingBlock:
(of_array_filter_block_t)block;
/**
* @brief Folds the array to a single object using the specified block.
*
* If the array is empty, it will return `nil`.
*
* If there is only one object in the array, that object will be returned and
* the block will not be invoked.
*
* If there are at least two objects, the block is invoked for each object
* except the first, where left is always to what the array has already been
* folded and right what should be added to left.
*
* @param block A block which folds two objects into one, which is called for
* all objects except the first
* @return The array folded to a single object
*/
- (nullable id)foldUsingBlock: (of_array_fold_block_t)block;
#endif
#if !defined(OF_HAVE_GENERICS) && !defined(DOXYGEN)
# undef ObjectType
#endif
@end
OF_ASSUME_NONNULL_END
#import "OFMutableArray.h"
#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
/* Required for array literals to work */
@compatibility_alias NSArray OFArray;
#endif