/* obstack.h - object stack macros
- Copyright (C) 1988,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+ Copyright (C) 1988,89,90,91,92,93,94,96,97,98,99,2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library. Its master source is NOT part of
the C library, however. The master source lives in /gd/gnu/lib.
NOTE: The canonical source of this file is maintained with the GNU C Library.
- Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+ Bugs can be reported to bug-glibc@gnu.org.
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA. */
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Summary:
may ignore the byte-within-word field of the pointer. */
#ifndef __PTR_TO_INT
-#define __PTR_TO_INT(P) ((P) - (char *) 0)
+# define __PTR_TO_INT(P) ((P) - (char *) 0)
#endif
#ifndef __INT_TO_PTR
-#define __INT_TO_PTR(P) ((P) + (char *) 0)
+# define __INT_TO_PTR(P) ((P) + (char *) 0)
#endif
-/* We need the type of the resulting object. In ANSI C it is ptrdiff_t
- but in traditional C it is usually long. If we are in ANSI C and
- don't already have ptrdiff_t get it. */
-
-#if defined (__STDC__) && __STDC__ && ! defined (offsetof)
-#if defined (__GNUC__) && defined (IN_GCC)
-/* On Next machine, the system's stddef.h screws up if included
- after we have defined just ptrdiff_t, so include all of stddef.h.
- Otherwise, define just ptrdiff_t, which is all we need. */
-#ifndef __NeXT__
-#define __need_ptrdiff_t
-#endif
-#endif
-
-#include <stddef.h>
-#endif
+/* We need the type of the resulting object. If __PTRDIFF_TYPE__ is
+ defined, as with GNU C, use that; that way we don't pollute the
+ namespace with <stddef.h>'s symbols. Otherwise, if <stddef.h> is
+ available, include it and use ptrdiff_t. In traditional C, long is
+ the best that we can do. */
-#if defined (__STDC__) && __STDC__
-#define PTR_INT_TYPE ptrdiff_t
+#ifdef __PTRDIFF_TYPE__
+# define PTR_INT_TYPE __PTRDIFF_TYPE__
#else
-#define PTR_INT_TYPE long
+# ifdef HAVE_STDDEF_H
+# include <stddef.h>
+# define PTR_INT_TYPE ptrdiff_t
+# else
+# define PTR_INT_TYPE long
+# endif
#endif
-#if defined (_LIBC) || defined (HAVE_STRING_H)
-#include <string.h>
-#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+#if defined _LIBC || defined HAVE_STRING_H
+# include <string.h>
+# define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
#else
-#ifdef memcpy
-#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
-#else
-#define _obstack_memcpy(To, From, N) bcopy ((From), (To), (N))
-#endif
+# ifdef memcpy
+# define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+# else
+# define _obstack_memcpy(To, From, N) bcopy ((From), (To), (N))
+# endif
#endif
struct _obstack_chunk /* Lives at front of each chunk. */
char *chunk_limit; /* address of char after current chunk */
PTR_INT_TYPE temp; /* Temporary for some macros. */
int alignment_mask; /* Mask of alignment for each object. */
-#if defined (__STDC__) && __STDC__
+#if defined __STDC__ && __STDC__
/* These prototypes vary based on `use_extra_arg', and we use
casts to the prototypeless function type in all assignments,
but having prototypes here quiets -Wstrict-prototypes. */
/* Declare the external functions we use; they are in obstack.c. */
-#if defined (__STDC__) && __STDC__
+#if defined __STDC__ && __STDC__
extern void _obstack_newchunk (struct obstack *, int);
extern void _obstack_free (struct obstack *, void *);
extern int _obstack_begin (struct obstack *, int, int,
extern int _obstack_memory_used ();
#endif
\f
-#if defined (__STDC__) && __STDC__
+#if defined __STDC__ && __STDC__
/* Do the function-declarations after the structs
but before defining the macros. */
void * obstack_alloc (struct obstack *obstack, int size);
-void * obstack_copy (struct obstack *obstack, void *address, int size);
-void * obstack_copy0 (struct obstack *obstack, void *address, int size);
+void * obstack_copy (struct obstack *obstack, const void *address, int size);
+void * obstack_copy0 (struct obstack *obstack, const void *address, int size);
void obstack_free (struct obstack *obstack, void *block);
void obstack_blank (struct obstack *obstack, int size);
-void obstack_grow (struct obstack *obstack, void *data, int size);
-void obstack_grow0 (struct obstack *obstack, void *data, int size);
+void obstack_grow (struct obstack *obstack, const void *data, int size);
+void obstack_grow0 (struct obstack *obstack, const void *data, int size);
void obstack_1grow (struct obstack *obstack, int data_char);
-void obstack_ptr_grow (struct obstack *obstack, void *data);
+void obstack_ptr_grow (struct obstack *obstack, const void *data);
void obstack_int_grow (struct obstack *obstack, int data);
void * obstack_finish (struct obstack *obstack);
int obstack_room (struct obstack *obstack);
void obstack_make_room (struct obstack *obstack, int size);
void obstack_1grow_fast (struct obstack *obstack, int data_char);
-void obstack_ptr_grow_fast (struct obstack *obstack, void *data);
+void obstack_ptr_grow_fast (struct obstack *obstack, const void *data);
void obstack_int_grow_fast (struct obstack *obstack, int data);
void obstack_blank_fast (struct obstack *obstack, int size);
so we do not declare them. */
/* Error handler called when `obstack_chunk_alloc' failed to allocate
- more memory. This can be set to a user defined function. The
- default action is to print a message and abort. */
-#if defined (__STDC__) && __STDC__
+ more memory. This can be set to a user defined function which
+ should either abort gracefully or use longjump - but shouldn't
+ return. The default action is to print a message and abort. */
+#if defined __STDC__ && __STDC__
extern void (*obstack_alloc_failed_handler) (void);
#else
extern void (*obstack_alloc_failed_handler) ();
/* To prevent prototype warnings provide complete argument list in
standard C version. */
-#if defined (__STDC__) && __STDC__
-
-#define obstack_init(h) \
- _obstack_begin ((h), 0, 0, \
- (void *(*) (long)) obstack_chunk_alloc, (void (*) (void *)) obstack_chunk_free)
-
-#define obstack_begin(h, size) \
- _obstack_begin ((h), (size), 0, \
- (void *(*) (long)) obstack_chunk_alloc, (void (*) (void *)) obstack_chunk_free)
-
-#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
- _obstack_begin ((h), (size), (alignment), \
- (void *(*) (long)) (chunkfun), (void (*) (void *)) (freefun))
-
-#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
- _obstack_begin_1 ((h), (size), (alignment), \
- (void *(*) (void *, long)) (chunkfun), \
+#if defined __STDC__ && __STDC__
+
+# define obstack_init(h) \
+ _obstack_begin ((h), 0, 0, \
+ (void *(*) (long)) obstack_chunk_alloc, \
+ (void (*) (void *)) obstack_chunk_free)
+
+# define obstack_begin(h, size) \
+ _obstack_begin ((h), (size), 0, \
+ (void *(*) (long)) obstack_chunk_alloc, \
+ (void (*) (void *)) obstack_chunk_free)
+
+# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
+ _obstack_begin ((h), (size), (alignment), \
+ (void *(*) (long)) (chunkfun), \
+ (void (*) (void *)) (freefun))
+
+# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+ _obstack_begin_1 ((h), (size), (alignment), \
+ (void *(*) (void *, long)) (chunkfun), \
(void (*) (void *, void *)) (freefun), (arg))
-#define obstack_chunkfun(h, newchunkfun) \
+# define obstack_chunkfun(h, newchunkfun) \
((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun))
-#define obstack_freefun(h, newfreefun) \
+# define obstack_freefun(h, newfreefun) \
((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
#else
-#define obstack_init(h) \
- _obstack_begin ((h), 0, 0, \
- (void *(*) ()) obstack_chunk_alloc, (void (*) ()) obstack_chunk_free)
+# define obstack_init(h) \
+ _obstack_begin ((h), 0, 0, \
+ (void *(*) ()) obstack_chunk_alloc, \
+ (void (*) ()) obstack_chunk_free)
-#define obstack_begin(h, size) \
- _obstack_begin ((h), (size), 0, \
- (void *(*) ()) obstack_chunk_alloc, (void (*) ()) obstack_chunk_free)
+# define obstack_begin(h, size) \
+ _obstack_begin ((h), (size), 0, \
+ (void *(*) ()) obstack_chunk_alloc, \
+ (void (*) ()) obstack_chunk_free)
-#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
- _obstack_begin ((h), (size), (alignment), \
- (void *(*) ()) (chunkfun), (void (*) ()) (freefun))
+# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
+ _obstack_begin ((h), (size), (alignment), \
+ (void *(*) ()) (chunkfun), \
+ (void (*) ()) (freefun))
-#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
- _obstack_begin_1 ((h), (size), (alignment), \
- (void *(*) ()) (chunkfun), (void (*) ()) (freefun), (arg))
+# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+ _obstack_begin_1 ((h), (size), (alignment), \
+ (void *(*) ()) (chunkfun), \
+ (void (*) ()) (freefun), (arg))
-#define obstack_chunkfun(h, newchunkfun) \
+# define obstack_chunkfun(h, newchunkfun) \
((h) -> chunkfun = (struct _obstack_chunk *(*)()) (newchunkfun))
-#define obstack_freefun(h, newfreefun) \
+# define obstack_freefun(h, newfreefun) \
((h) -> freefun = (void (*)()) (newfreefun))
#endif
#define obstack_memory_used(h) _obstack_memory_used (h)
\f
-#if defined (__GNUC__) && defined (__STDC__) && __STDC__
+#if defined __GNUC__ && defined __STDC__ && __STDC__
/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
does not implement __extension__. But that compiler doesn't define
__GNUC_MINOR__. */
-#if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
-#define __extension__
-#endif
+# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
+# define __extension__
+# endif
/* For GNU C, if not -traditional,
we can define these macros to compute all args only once
without using a global variable.
Also, we can avoid using the `temp' slot, to make faster code. */
-#define obstack_object_size(OBSTACK) \
+# define obstack_object_size(OBSTACK) \
__extension__ \
- ({ struct obstack *__o = (OBSTACK); \
+ ({ struct obstack const *__o = (OBSTACK); \
(unsigned) (__o->next_free - __o->object_base); })
-#define obstack_room(OBSTACK) \
+# define obstack_room(OBSTACK) \
__extension__ \
- ({ struct obstack *__o = (OBSTACK); \
+ ({ struct obstack const *__o = (OBSTACK); \
(unsigned) (__o->chunk_limit - __o->next_free); })
-#define obstack_make_room(OBSTACK,length) \
+# define obstack_make_room(OBSTACK,length) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
int __len = (length); \
_obstack_newchunk (__o, __len); \
(void) 0; })
-#define obstack_empty_p(OBSTACK) \
+# define obstack_empty_p(OBSTACK) \
__extension__ \
- ({ struct obstack *__o = (OBSTACK); \
+ ({ struct obstack const *__o = (OBSTACK); \
(__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); })
-#define obstack_grow(OBSTACK,where,length) \
+# define obstack_grow(OBSTACK,where,length) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
int __len = (length); \
if (__o->next_free + __len > __o->chunk_limit) \
_obstack_newchunk (__o, __len); \
- _obstack_memcpy (__o->next_free, (char *) (where), __len); \
+ _obstack_memcpy (__o->next_free, (where), __len); \
__o->next_free += __len; \
(void) 0; })
-#define obstack_grow0(OBSTACK,where,length) \
+# define obstack_grow0(OBSTACK,where,length) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
int __len = (length); \
if (__o->next_free + __len + 1 > __o->chunk_limit) \
_obstack_newchunk (__o, __len + 1); \
- _obstack_memcpy (__o->next_free, (char *) (where), __len); \
+ _obstack_memcpy (__o->next_free, (where), __len); \
__o->next_free += __len; \
*(__o->next_free)++ = 0; \
(void) 0; })
-#define obstack_1grow(OBSTACK,datum) \
+# define obstack_1grow(OBSTACK,datum) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + 1 > __o->chunk_limit) \
*(__o->next_free)++ = (datum); \
(void) 0; })
-/* These assume that the obstack alignment is good enough for pointers or ints,
- and that the data added so far to the current object
+/* These assume that the obstack alignment is good enough for pointers
+ or ints, and that the data added so far to the current object
shares that much alignment. */
-#define obstack_ptr_grow(OBSTACK,datum) \
+# define obstack_ptr_grow(OBSTACK,datum) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + sizeof (void *) > __o->chunk_limit) \
_obstack_newchunk (__o, sizeof (void *)); \
- *((void **)__o->next_free)++ = ((void *)datum); \
+ *((void **)__o->next_free)++ = (datum); \
(void) 0; })
-#define obstack_int_grow(OBSTACK,datum) \
+# define obstack_int_grow(OBSTACK,datum) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + sizeof (int) > __o->chunk_limit) \
_obstack_newchunk (__o, sizeof (int)); \
- *((int *)__o->next_free)++ = ((int)datum); \
+ *((int *)__o->next_free)++ = (datum); \
(void) 0; })
-#define obstack_ptr_grow_fast(h,aptr) (*((void **) (h)->next_free)++ = (void *)aptr)
-#define obstack_int_grow_fast(h,aint) (*((int *) (h)->next_free)++ = (int) aint)
+# define obstack_ptr_grow_fast(h,aptr) \
+ (*((void **) (h)->next_free)++ = (aptr))
+
+# define obstack_int_grow_fast(h,aint) \
+ (*((int *) (h)->next_free)++ = (aint))
-#define obstack_blank(OBSTACK,length) \
+# define obstack_blank(OBSTACK,length) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
int __len = (length); \
__o->next_free += __len; \
(void) 0; })
-#define obstack_alloc(OBSTACK,length) \
+# define obstack_alloc(OBSTACK,length) \
__extension__ \
({ struct obstack *__h = (OBSTACK); \
obstack_blank (__h, (length)); \
obstack_finish (__h); })
-#define obstack_copy(OBSTACK,where,length) \
+# define obstack_copy(OBSTACK,where,length) \
__extension__ \
({ struct obstack *__h = (OBSTACK); \
obstack_grow (__h, (where), (length)); \
obstack_finish (__h); })
-#define obstack_copy0(OBSTACK,where,length) \
+# define obstack_copy0(OBSTACK,where,length) \
__extension__ \
({ struct obstack *__h = (OBSTACK); \
obstack_grow0 (__h, (where), (length)); \
/* The local variable is named __o1 to avoid a name conflict
when obstack_blank is called. */
-#define obstack_finish(OBSTACK) \
+# define obstack_finish(OBSTACK) \
__extension__ \
({ struct obstack *__o1 = (OBSTACK); \
void *value; \
__o1->object_base = __o1->next_free; \
value; })
-#define obstack_free(OBSTACK, OBJ) \
+# define obstack_free(OBSTACK, OBJ) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
void *__obj = (OBJ); \
if (__obj > (void *)__o->chunk && __obj < (void *)__o->chunk_limit) \
- __o->next_free = __o->object_base = __obj; \
+ __o->next_free = __o->object_base = (char *)__obj; \
else (obstack_free) (__o, __obj); })
\f
#else /* not __GNUC__ or not __STDC__ */
-#define obstack_object_size(h) \
+# define obstack_object_size(h) \
(unsigned) ((h)->next_free - (h)->object_base)
-#define obstack_room(h) \
+# define obstack_room(h) \
(unsigned) ((h)->chunk_limit - (h)->next_free)
-#define obstack_empty_p(h) \
+# define obstack_empty_p(h) \
((h)->chunk->prev == 0 && (h)->next_free - (h)->chunk->contents == 0)
/* Note that the call to _obstack_newchunk is enclosed in (..., 0)
Casting the third operand to void was tried before,
but some compilers won't accept it. */
-#define obstack_make_room(h,length) \
+# define obstack_make_room(h,length) \
( (h)->temp = (length), \
(((h)->next_free + (h)->temp > (h)->chunk_limit) \
? (_obstack_newchunk ((h), (h)->temp), 0) : 0))
-#define obstack_grow(h,where,length) \
+# define obstack_grow(h,where,length) \
( (h)->temp = (length), \
(((h)->next_free + (h)->temp > (h)->chunk_limit) \
? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \
- _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \
+ _obstack_memcpy ((h)->next_free, (where), (h)->temp), \
(h)->next_free += (h)->temp)
-#define obstack_grow0(h,where,length) \
+# define obstack_grow0(h,where,length) \
( (h)->temp = (length), \
(((h)->next_free + (h)->temp + 1 > (h)->chunk_limit) \
? (_obstack_newchunk ((h), (h)->temp + 1), 0) : 0), \
- _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \
+ _obstack_memcpy ((h)->next_free, (where), (h)->temp), \
(h)->next_free += (h)->temp, \
*((h)->next_free)++ = 0)
-#define obstack_1grow(h,datum) \
+# define obstack_1grow(h,datum) \
( (((h)->next_free + 1 > (h)->chunk_limit) \
? (_obstack_newchunk ((h), 1), 0) : 0), \
(*((h)->next_free)++ = (datum)))
-#define obstack_ptr_grow(h,datum) \
+# define obstack_ptr_grow(h,datum) \
( (((h)->next_free + sizeof (char *) > (h)->chunk_limit) \
? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0), \
- (*((char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = ((char *) datum)))
+ (*((const char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = (datum)))
-#define obstack_int_grow(h,datum) \
+# define obstack_int_grow(h,datum) \
( (((h)->next_free + sizeof (int) > (h)->chunk_limit) \
? (_obstack_newchunk ((h), sizeof (int)), 0) : 0), \
- (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = ((int) datum)))
+ (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = (datum)))
-#define obstack_ptr_grow_fast(h,aptr) (*((char **) (h)->next_free)++ = (char *) aptr)
-#define obstack_int_grow_fast(h,aint) (*((int *) (h)->next_free)++ = (int) aint)
+# define obstack_ptr_grow_fast(h,aptr) \
+ (*((const char **) (h)->next_free)++ = (aptr))
-#define obstack_blank(h,length) \
+# define obstack_int_grow_fast(h,aint) \
+ (*((int *) (h)->next_free)++ = (aint))
+
+# define obstack_blank(h,length) \
( (h)->temp = (length), \
(((h)->chunk_limit - (h)->next_free < (h)->temp) \
? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \
((h)->next_free += (h)->temp))
-#define obstack_alloc(h,length) \
+# define obstack_alloc(h,length) \
(obstack_blank ((h), (length)), obstack_finish ((h)))
-#define obstack_copy(h,where,length) \
+# define obstack_copy(h,where,length) \
(obstack_grow ((h), (where), (length)), obstack_finish ((h)))
-#define obstack_copy0(h,where,length) \
+# define obstack_copy0(h,where,length) \
(obstack_grow0 ((h), (where), (length)), obstack_finish ((h)))
-#define obstack_finish(h) \
+# define obstack_finish(h) \
( ((h)->next_free == (h)->object_base \
? (((h)->maybe_empty_object = 1), 0) \
: 0), \
> (h)->chunk_limit - (char *) (h)->chunk) \
? ((h)->next_free = (h)->chunk_limit) : 0), \
(h)->object_base = (h)->next_free, \
- __INT_TO_PTR ((h)->temp))
+ (void *) __INT_TO_PTR ((h)->temp))
-#if defined (__STDC__) && __STDC__
-#define obstack_free(h,obj) \
+# if defined __STDC__ && __STDC__
+# define obstack_free(h,obj) \
( (h)->temp = (char *) (obj) - (char *) (h)->chunk, \
(((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
? (int) ((h)->next_free = (h)->object_base \
= (h)->temp + (char *) (h)->chunk) \
: (((obstack_free) ((h), (h)->temp + (char *) (h)->chunk), 0), 0)))
-#else
-#define obstack_free(h,obj) \
+# else
+# define obstack_free(h,obj) \
( (h)->temp = (char *) (obj) - (char *) (h)->chunk, \
(((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
? (int) ((h)->next_free = (h)->object_base \
= (h)->temp + (char *) (h)->chunk) \
: (_obstack_free ((h), (h)->temp + (char *) (h)->chunk), 0)))
-#endif
+# endif
#endif /* not __GNUC__ or not __STDC__ */
projects / gnulib.git / blobdiff