ObjFW  Artifact [d36729b45c]

Artifact d36729b45c2a59be7578d926ea2f34627e55ff3bb4345ca142076ee2f682b488:

• File src/OFSet_hashtable.m — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions.

  This mostly removes the argument for the class in which the exception
  occurred. As backtraces were recently added for all platforms, the
  passed class does not give any extra information on where the exception
  occurred anymore.

  This also removes a few other arguments which were not too helpful. In
  the past, the idea was to pass as many arguments as possible so that it
  is easier to find the origin of the exception. However, as backtraces
  are a much better way to find the origin, those are not useful anymore
  and just make the exception more cumbersome to use. The rule is now to
  only pass arguments that might help in recovering from the exception or
  provide information that is otherwise not easily accessible. (user: js, size: 6095) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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.
 */

#include "config.h"

#import "OFSet_hashtable.h"
#import "OFMutableSet_hashtable.h"
#import "OFCountedSet_hashtable.h"
#import "OFMapTable.h"
#import "OFArray.h"
#import "OFString.h"
#import "OFXMLElement.h"

#import "OFInvalidArgumentException.h"
#import "OFEnumerationMutationException.h"

#import "autorelease.h"

static void*
retain(void *value)
{
	return [(id)value retain];
}

static void
release(void *value)
{
	[(id)value release];
}

static uint32_t
hash(void *value)
{
	return [(id)value hash];
}

static bool
equal(void *value1, void *value2)
{
	return [(id)value1 isEqual: (id)value2];
}

static of_map_table_functions_t keyFunctions = {
	.retain = retain,
	.release = release,
	.hash = hash,
	.equal = equal
};
static of_map_table_functions_t valueFunctions = {};

@implementation OFSet_hashtable
- init
{
	return [self initWithCapacity: 0];
}

- initWithCapacity: (size_t)capacity
{
	self = [super init];

	@try {
		_mapTable = [[OFMapTable alloc]
		    initWithKeyFunctions: keyFunctions
			  valueFunctions: valueFunctions
				capacity: capacity];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithSet: (OFSet*)set
{
	size_t count;

	if (set == nil)
		return [self init];

	@try {
		count = [set count];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	self = [self initWithCapacity: count];

	@try {
		void *pool = objc_autoreleasePoolPush();
		OFEnumerator *enumerator;
		id object;

		enumerator = [set objectEnumerator];
		while ((object = [enumerator nextObject]) != nil)
			[_mapTable setValue: (void*)1
				     forKey: object];

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithArray: (OFArray*)array
{
	size_t count;

	if (array == nil)
		return self;

	@try {
		count = [array count];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	self = [self initWithCapacity: count];

	@try {
		void *pool = objc_autoreleasePoolPush();
		OFEnumerator *enumerator;
		id object;

		enumerator = [array objectEnumerator];
		while ((object = [enumerator nextObject]) != nil)
			[_mapTable setValue: (void*)1
				     forKey: object];

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithObjects: (id const*)objects
	    count: (size_t)count
{
	self = [self initWithCapacity: count];

	@try {
		size_t i;

		for (i = 0; i < count; i++)
			[_mapTable setValue: (void*)1
				     forKey: objects[i]];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithObject: (id)firstObject
       arguments: (va_list)arguments
{
	self = [super init];

	@try {
		id object;
		va_list argumentsCopy;
		size_t count;

		va_copy(argumentsCopy, arguments);

		for (count = 1; va_arg(argumentsCopy, id) != nil; count++);

		_mapTable = [[OFMapTable alloc]
		    initWithKeyFunctions: keyFunctions
			  valueFunctions: valueFunctions
				capacity: count];

		[_mapTable setValue: (void*)1
			     forKey: firstObject];

		while ((object = va_arg(arguments, id)) != nil)
			[_mapTable setValue: (void*)1
				     forKey: object];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithSerialization: (OFXMLElement*)element
{
	self = [self init];

	@try {
		void *pool = objc_autoreleasePoolPush();
		OFEnumerator *enumerator;
		OFXMLElement *child;

		if ((![[element name] isEqual: @"OFSet"] &&
		    ![[element name] isEqual: @"OFMutableSet"]) ||
		    ![[element namespace] isEqual: OF_SERIALIZATION_NS])
			@throw [OFInvalidArgumentException exception];

		enumerator = [[element elementsForNamespace:
		    OF_SERIALIZATION_NS] objectEnumerator];
		while ((child = [enumerator nextObject]) != nil) {
			void *pool2  = objc_autoreleasePoolPush();

			[_mapTable setValue: (void*)1
				     forKey: [child objectByDeserializing]];

			objc_autoreleasePoolPop(pool2);
		}

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_mapTable release];

	[super dealloc];
}

- (size_t)count
{
	return [_mapTable count];
}

- (bool)containsObject: (id)object
{
	if (object == nil)
		return false;

	return ([_mapTable valueForKey: object] != nil);
}

- (bool)isEqual: (id)object
{
	OFSet_hashtable *set;

	if (![object isKindOfClass: [OFSet_hashtable class]] &&
	    ![object isKindOfClass: [OFMutableSet_hashtable class]] &&
	    ![object isKindOfClass: [OFCountedSet_hashtable class]])
		return [super isEqual: object];

	set = object;

	return [set->_mapTable isEqual: _mapTable];
}

- (id)anyObject
{
	void *pool = objc_autoreleasePoolPush();
	id object;

	object = [[_mapTable keyEnumerator] nextValue];
	object = [object retain];

	objc_autoreleasePoolPop(pool);

	return [object autorelease];
}

- (OFEnumerator*)objectEnumerator
{
	return [[[OFMapTableEnumeratorWrapper alloc]
	    initWithEnumerator: [_mapTable keyEnumerator]
			object: self] autorelease];
}

- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
			   objects: (id*)objects
			     count: (int)count
{
	return [_mapTable countByEnumeratingWithState: state
					      objects: objects
						count: count];
}

#ifdef OF_HAVE_BLOCKS
- (void)enumerateObjectsUsingBlock: (of_set_enumeration_block_t)block
{
	@try {
		[_mapTable enumerateKeysAndValuesUsingBlock:
		    ^ (void *key, void *value, bool *stop) {
			block(key, stop);
		}];
	} @catch (OFEnumerationMutationException *e) {
		@throw [OFEnumerationMutationException
		    exceptionWithObject: self];
	}
}
#endif
@end