ObjFW  Check-in [c9a2f95a9c]

Legend:
 * Changes of existing features or bugfixes.
 + New features.

ObjFW 0.1.2 -> 0.2, 01.02.2010
 + Support for ObjC 2 Fast Enumerations on every platform which has
   compiler support for fast enumerations.
 + Support for ObjC 2 properties on every platform with compiler support.
 + Fast Enumeration through arrays and dictionaries.
 * OFIterator has been removed.
 + OFEnumerator was added to replace OFIterator, which is more general
   and works with arrays and dictionaries.
 + Portable implementation for atomic operations.
 + Portable implementation for spinlocks. They use atomic operations if
   available, if not they fall back to pthread spinlocks. If both are
   unavailable, mutexes are used as a last fallback.
 * -[retain] and -[release] are now atomic. If no atomic operations are
   available, spinlocks are used (which can fall back to mutexes, see
   above).
 * -[readLine] now handles \r\n without having the \r included in the
   returned line.
 + OFThread now has -[tryLock].
 * Mutation methods have been removed from immutable interfaces, thus
   already giving an error at compilation instead of at runtime.
 * Dependencies between headers have been reduced, leading to faster
   compile times.
 * The interfaces of OFSocket and OFStream were cleaned up and some
   methods were moved to OFTCPSocket, as they make sense only there.
 * File methods unavailable on Windows don't throw an exception at
   runtime anymore, but instead are not even in the interface on
   Windows. This way, it is a compile time error instead of a runtime
   error.

ObjFW 0.1.1 -> 0.1.2, 15.01.2010
 * Fix a bug in OFMutableArray's -[removeObject:] and
   -[removeObjectIdenticalTo:] that could lead to not removing all
   occurrences of the object from the array and to out of bounds reads.
 * Change the URL in the framework plist to the homepage.

ObjFW 0.1 -> 0.1.1, 04.01.2010

       ${OFTHREAD_M}		\
       OFURLEncoding.m		\
       OFXMLElement.m		\
       OFXMLParser.m		\
       unicode.m

INCLUDES := ${SRCS:.m=.h}	\

	    OFMacros.h		\
	    ObjFW.h		\
	    asprintf.h		\
	    ${ATOMIC_H}		\
	    objfw-defs.h	\
	    ${THREADING_H}

 * the packaging of this file.
 */

#include <stdarg.h>

#import "OFObject.h"
#import "OFEnumerator.h"


@class OFDataArray;
@class OFString;

/**
 * The OFArray class is a class for storing objects in an array.
 */

 * \return A new autoreleased OFArray
 */
+ arrayWithObjects: (OFObject*)first, ...;

/**
 * Creates a new OFArray with the objects from the specified C array.
 *
 * \param objs A C array of objects, terminated with nil
 * \return A new autoreleased OFArray
 */
+ arrayWithCArray: (OFObject**)objs;

/**
 * Initializes an OFArray with the specified object.
 *

 */
- initWithObject: (OFObject*)first
	 argList: (va_list)args;

/**
 * Initializes an OFArray with the objects from the specified C array.
 *
 * \param objs A C array of objects, terminated with nil
 * \return An initialized OFArray
 */
- initWithCArray: (OFObject**)objs;

/**
 * \return The number of objects in the array
 */

 * the packaging of this file.
 */

#include <stdarg.h>

#import "OFObject.h"
#import "OFEnumerator.h"


@class OFArray;

struct of_dictionary_bucket
{
	OFObject <OFCopying> *key;
	OFObject	     *object;

/**
 * Resets the enumerator, so the next call to nextObject returns the first
 * object again.
 */
- reset;
@end

/*
 * This needs to be exactly like this because it's hardcoded in the compiler.
 *
 * We need this bad check to see if we already imported Cocoa, which defines
 * this as well.
 */
#define of_fast_enumeration_state_t NSFastEnumerationState
#ifndef NSINTEGER_DEFINED
typedef struct __of_fast_enumeration_state {
	unsigned long state;
	id *itemsPtr;
	unsigned long *mutationsPtr;
	unsigned long extra[5];
} of_fast_enumeration_state_t;
#endif

/**
 * The OFFastEnumeration protocol needs to be implemented by all classes
 * supporting fast enumeration.
 */
@protocol OFFastEnumeration
- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
			   objects: (id*)objects
			     count: (int)count;
@end

	size_t i, j, d;
	char *nstr;

	if (!is_utf8) {
		assert(table_size >= 1);

		uint8_t *p = (uint8_t*)*string + *length;
		uint8_t t;

		while (--p >= (uint8_t*)*string)
			if ((t = table[0][*p]) != 0)
				*p = t;

		return;
	}

	ulen = [self length];
	ustr = [self allocMemoryForNItems: [self length]
				 withSize: ulen];

# import <objc/runtime.h>
#endif
#ifdef OF_GNU_RUNTIME
# import <objc/sarray.h>
#endif

#ifdef OF_ATOMIC_OPS
# import "atomic.h"
#else
# import "threading.h"
#endif

struct pre_ivar {
	void	      **memchunks;
	size_t	      memchunks_size;
	int32_t	      retain_count; /* int32_t because atomic ops use int32_t */
#ifndef OF_ATOMIC_OPS

	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- initWithObject: (OFObject <OFCopying>*)obj
{
	self = [super init];
	object = [obj retain];

	if (!of_thread_new(&thread, call_main, self)) {
		Class c = isa;
		[object release];
		[super dealloc];
		@throw [OFInitializationFailedException newWithClass: c];
	}

#import "OFMacros.h"

#if !defined(OF_THREADS) || (!defined(OF_HAVE_PTHREADS) && !defined(_WIN32))
# error No threads available!
#endif

#if defined(OF_HAVE_PTHREADS)
# include <pthread.h>
typedef pthread_t of_thread_t;
typedef pthread_mutex_t of_mutex_t;
typedef pthread_key_t of_tlskey_t;
#elif defined(_WIN32)
# include <windows.h>
typedef HANDLE of_thread_t;
typedef CRITICAL_SECTION of_mutex_t;
typedef DWORD of_tlskey_t;
#endif

#if defined(OF_ATOMIC_OPS)
# import "atomic.h"
typedef int32_t of_spinlock_t;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
typedef pthread_spinlock_t of_spinlock_t;
#else
typedef pthread_mutex_t of_spinlock_t;
#endif

#endif
}

static OF_INLINE BOOL
of_spinlock_unlock(of_spinlock_t *s)
{
#if defined(OF_ATOMIC_OPS)
	of_atomic_and32((uint32_t*)s, 0);
	return YES;
#elif defined(OF_HAVE_PTHREAD_SPINLOCKS)
	return (pthread_spin_unlock(s) ? NO : YES);
#else
	return of_mutex_unlock(s);
#endif
}