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/* Collection definitions for the use of subclass implementations only
Copyright (C) 1993 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@cs.rochester.edu>
Dept. of Computer Science, U. of Rochester, Rochester, NY 14627
This file is part of the GNU Objective-C Collection library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CollectionPrivate_h_INCLUDE_GNU
#define __CollectionPrivate_h_INCLUDE_GNU
#include <coll/Collection.h>
#include <objc/objc-api.h>
#include <coll/collstd.h>
#include <coll/eltfuncs.h>
@interface Collection (ArchivingHelpers)
/* These methods should never be called except in order inside
-write: and -read: */
- _writeInit: (TypedStream*)aStream;
- _readInit: (TypedStream*)aStream;
- _writeContents: (TypedStream*)aStream;
- _readContents: (TypedStream*)aStream;
@end
/* To be used inside methods for getting the element comparison function.
This macro could be redefined when the comparison function is an
instance variable or is fixed.
I'm wondering if I should put _comparison_function back as an instance
variable in Collection. */
#define COMPARISON_FUNCTION [self comparisonFunction]
/* Use this for comparing elements in your implementation. */
#define COMPARE_ELEMENTS(ELT1, ELT2) \
((*COMPARISON_FUNCTION)(ELT1, ELT2))
#define ELEMENTS_EQUAL(ELT1, ELT2) \
(COMPARE_ELEMENTS(ELT1, ELT2) == 0)
#define ENCODING_IS_OBJECT(ENCODING) \
((*(ENCODING) == _C_ID) || (*(ENCODING) == _C_CLASS))
/* To be used inside a method for determining if the contents are objects */
#define CONTAINS_OBJECTS \
(ENCODING_IS_OBJECT([self contentEncoding]))
/* Error Handling */
/* This goes inside a method. */
#define RETURN_BY_CALLING_EXCEPTION_FUNCTION(FUNC) \
__builtin_return(__builtin_apply((apply_t)FUNC, __builtin_apply_args(), method_get_sizeof_arguments(class_get_instance_method(self->isa, _cmd))));
/* To be used inside a method for making sure the contents are objects.
typeof(DEFAULT_ERROR_RETURN) must be the same type as the method
returns. */
#define CHECK_CONTAINS_OBJECTS_ERROR() \
({if (!(CONTAINS_OBJECTS)) \
{ \
[self error:"in %s, requires object contents", sel_get_name(_cmd)]; \
}})
/* To be used inside a method whenever a particular element isn't found */
#define ELEMENT_NOT_FOUND_ERROR(AN_ELEMENT) \
([self error:"in %s, element not found.", sel_get_name(_cmd)])
/* To be used inside a method whenever there is no element matching the
needed criteria */
#define NO_ELEMENT_FOUND_ERROR() \
([self error:"in %s, no element found.", sel_get_name(_cmd)])
/* These aren't used anymore */
#define TRY_DOING_FORWARD(FORWARDSEL) \
{ \
IMP imp;\
\
imp = objc_msg_lookup(self, FORWARDSEL);\
if (imp)\
{\
void *args;\
\
args = __builtin_apply_args();\
(*imp)(self, FORWARDSEL, _cmd, args);\
}\
}
#define TRY_DOING_FORWARD_WITH(FORWARDSEL,ARG)\
{\
IMP imp;\
\
imp = objc_msg_lookup(self, FORWARDSEL);\
if (imp)\
{\
void *args;\
\
args = __builtin_apply_args();\
(*imp)(self, FORWARDSEL, _cmd, args, ARG);\
}\
}
/* Not currently using these forwarding macros. */
#define TRY_DOING_FORWARD_AND_RETURN(FORWARDSEL) \
{ \
IMP imp;\
\
imp = objc_msg_lookup(self, FORWARDSEL);\
if (imp)\
{\
void *result, *args;\
\
args = __builtin_apply_args();\
result = (*imp)(self, FORWARDSEL, _cmd, args);\
__builtin_return(result); /* Perhaps this shouldn't be here */ \
}\
}
#define TRY_DOING_FORWARD_WITH_AND_RETURN(FORWARDSEL,ARG)\
{\
IMP imp;\
\
imp = objc_msg_lookup(self, FORWARDSEL);\
if (imp)\
{\
void *result, *args;\
\
args = __builtin_apply_args();\
result = (*imp)(self, FORWARDSEL, _cmd, args, ARG);\
__builtin_return(result); /* Perhaps this shouldn't be here */ \
}\
}
#endif /* __CollectionPrivate_h_INCLUDE_GNU */
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