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revise to make embedding in other classes easier

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@27865 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2009-02-15 06:03:54 +00:00
parent aaca31acf2
commit 5ff1f5d2ca
2 changed files with 98 additions and 91 deletions
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89
Source/NSConcretePointerFunctions.h
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@ -25,32 +25,41 @@
#import "Foundation/NSPointerFunctions.h"
/* Declare a structure type to copy poinnnnnnter functions information
* around easily.
*/
typedef struct
{
void* (*acquireFunction)(const void *item,
NSUInteger (*size)(const void *item), BOOL shouldCopy);
NSString *(*descriptionFunction)(const void *item);
NSUInteger (*hashFunction)(const void *item,
NSUInteger (*size)(const void *item));
BOOL (*isEqualFunction)(const void *item1, const void *item2,
NSUInteger (*size)(const void *item));
void (*relinquishFunction)(const void *item,
NSUInteger (*size)(const void *item));
NSUInteger (*sizeFunction)(const void *item);
BOOL shouldCopyIn;
BOOL usesStrongWriteBarrier;
BOOL usesWeakReadAndWriteBarriers;
} PFInfo;
/* Declare the concrete pointer functions class as a wrapper around
* an instance of the PFInfo structure.
*/
@interface NSConcretePointerFunctions : NSPointerFunctions
{
@public
NSUInteger _options;
void* (*_acquireFunction)(const void *item,
NSUInteger (*size)(const void *item), BOOL shouldCopy);
NSString *(*_descriptionFunction)(const void *item);
NSUInteger (*_hashFunction)(const void *item,
NSUInteger (*size)(const void *item));
BOOL (*_isEqualFunction)(const void *item1, const void *item2,
NSUInteger (*size)(const void *item));
void (*_relinquishFunction)(const void *item,
NSUInteger (*size)(const void *item));
NSUInteger (*_sizeFunction)(const void *item);
BOOL _shouldCopyIn;
BOOL _usesStrongWriteBarrier;
BOOL _usesWeakReadAndWriteBarriers;
PFInfo _x;
}
@end
@ -61,11 +70,11 @@
/* Acquire the pointer value to store for the specified item.
*/
static inline void
pointerFunctionsAcquire(NSConcretePointerFunctions *PF, void **dst, void *src)
pointerFunctionsAcquire(PFInfo *PF, void **dst, void *src)
{
if (PF->_acquireFunction != 0)
src = (*PF->_acquireFunction)(src, PF->_sizeFunction, PF->_shouldCopyIn);
#if GS_WITH_GC
if (PF->acquireFunction != 0)
src = (*PF->acquireFunction)(src, PF->sizeFunction, PF->shouldCopyIn);
#if GSWITHGC
if (PF->usesWeakReadAndWriteBarriers)
GSAssignZeroingWeakPointer(dst, src);
else
@ -77,10 +86,10 @@ pointerFunctionsAcquire(NSConcretePointerFunctions *PF, void **dst, void *src)
/* Generate an NSString description of the item
*/
static inline NSString *
pointerFunctionsDescribe(NSConcretePointerFunctions *PF, void *item)
pointerFunctionsDescribe(PFInfo *PF, void *item)
{
if (PF->_descriptionFunction != 0)
return (*PF->_descriptionFunction)(item);
if (PF->descriptionFunction != 0)
return (*PF->descriptionFunction)(item);
return nil;
}
@ -88,10 +97,10 @@ pointerFunctionsDescribe(NSConcretePointerFunctions *PF, void *item)
/* Generate the hash of the item
*/
static inline NSUInteger
pointerFunctionsHash(NSConcretePointerFunctions *PF, void *item)
pointerFunctionsHash(PFInfo *PF, void *item)
{
if (PF->_hashFunction != 0)
return (*PF->_hashFunction)(item, PF->_sizeFunction);
if (PF->hashFunction != 0)
return (*PF->hashFunction)(item, PF->sizeFunction);
return (NSUInteger)item;
}
@ -99,10 +108,10 @@ pointerFunctionsHash(NSConcretePointerFunctions *PF, void *item)
/* Compare two items for equality
*/
static inline BOOL
pointerFunctionsEqual(NSConcretePointerFunctions *PF, void *item1, void *item2)
pointerFunctionsEqual(PFInfo *PF, void *item1, void *item2)
{
if (PF->_isEqualFunction != 0)
return (*PF->_isEqualFunction)(item1, item2, PF->_sizeFunction);
if (PF->isEqualFunction != 0)
return (*PF->isEqualFunction)(item1, item2, PF->sizeFunction);
if (item1 == item2)
return YES;
return NO;
@ -112,11 +121,11 @@ pointerFunctionsEqual(NSConcretePointerFunctions *PF, void *item1, void *item2)
/* Relinquish the specified item and set it to zero.
*/
static inline void
pointerFunctionsRelinquish(NSConcretePointerFunctions *PF, void **itemptr)
pointerFunctionsRelinquish(PFInfo *PF, void **itemptr)
{
if (PF->_relinquishFunction != 0)
(*PF->_relinquishFunction)(*itemptr, PF->_sizeFunction);
if (PF->_usesWeakReadAndWriteBarriers)
if (PF->relinquishFunction != 0)
(*PF->relinquishFunction)(*itemptr, PF->sizeFunction);
if (PF->usesWeakReadAndWriteBarriers)
GSAssignZeroingWeakPointer(itemptr, (void*)0);
else
*itemptr = 0;