-/* system-dependent definitions for Bison.
- Copyright 2000 Free Software Foundation, Inc.
+/* System-dependent definitions for Bison.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 2000-2007, 2009-2012 Free Software Foundation, Inc.
+
+ 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.
+ the Free Software Foundation, either version 3 of the License, 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
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef BISON_SYSTEM_H
#define BISON_SYSTEM_H
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h>
-
-#include <assert.h>
-
-#ifdef MSDOS
-# include <io.h>
-#endif
-
-#ifdef _MSC_VER
-# include <stdlib.h>
-# include <process.h>
-# define getpid _getpid
+/* flex 2.5.31 gratutiously defines macros like INT8_MIN. But this
+ runs afoul of pre-C99 compilers that have <inttypes.h> or
+ <stdint.h>, which are included below if available. It also runs
+ afoul of pre-C99 compilers that define these macros in <limits.h>. */
+#if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
+# undef INT8_MIN
+# undef INT16_MIN
+# undef INT32_MIN
+# undef INT8_MAX
+# undef INT16_MAX
+# undef UINT8_MAX
+# undef INT32_MAX
+# undef UINT16_MAX
+# undef UINT32_MAX
#endif
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-
-/* The following test is to work around the gross typo in
- systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
- is defined to 0, not 1. */
-#if !EXIT_FAILURE
-# undef EXIT_FAILURE
-# define EXIT_FAILURE 1
-#endif
-
-#ifndef EXIT_SUCCESS
-# define EXIT_SUCCESS 0
-#endif
-
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-# include <string.h>
-/* An ANSI string.h and pre-ANSI memory.h might conflict. */
-# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
-# include <memory.h>
-# endif /* not STDC_HEADERS and HAVE_MEMORY_H */
-# ifndef bcopy
-# define bcopy(src, dst, num) memcpy((dst), (src), (num))
-# endif
-#else /* not STDC_HEADERS and not HAVE_STRING_H */
-# include <strings.h>
-/* memory.h and strings.h conflict on some systems. */
-#endif /* not STDC_HEADERS and not HAVE_STRING_H */
+#define STREQ(L, R) (strcmp(L, R) == 0)
+#define STRNEQ(L, R) (!STREQ(L, R))
-#if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H)
-# include <ctype.h>
-#endif
+/* Just like strncmp, but the second argument must be a literal string
+ and you don't specify the length. */
+#define STRNCMP_LIT(S, Literal) \
+ strncmp (S, "" Literal "", sizeof (Literal) - 1)
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
+/* Whether Literal is a prefix of S. */
+#define STRPREFIX_LIT(Literal, S) \
+ (STRNCMP_LIT (S, Literal) == 0)
-#if PROTOTYPES
-# define PARAMS(p) p
-#else
-# define PARAMS(p) ()
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
#endif
-# include "xalloc.h"
-
-/*---------------------.
-| Missing prototypes. |
-`---------------------*/
+#include <unistd.h>
+#include <inttypes.h>
-#if !HAVE_DECL_STPCPY
-char *stpcpy PARAMS ((char *dest, const char *src));
+#ifndef UINTPTR_MAX
+/* This isn't perfect, but it's good enough for Bison, which needs
+ only to hash pointers. */
+typedef size_t uintptr_t;
#endif
-#if !HAVE_DECL_STRNDUP
-char *strndup PARAMS ((const char *s, size_t size));
-#endif
+// Version mismatch.
+#define EX_MISMATCH 63
-#if !HAVE_DECL_STRNLEN
-size_t strnlen PARAMS ((const char *s, size_t maxlen));
-#endif
+/*---------.
+| Gnulib. |
+`---------*/
+#include <unlocked-io.h>
+#include <verify.h>
+#include <xalloc.h>
/*-----------------.
| GCC extensions. |
`-----------------*/
+/* Use PACIFY_CC to indicate that Code is unimportant to the logic of Bison
+ but that it is necessary for suppressing compiler warnings. For example,
+ Code might be a variable initializer that's always overwritten before the
+ variable is used.
+
+ PACIFY_CC is intended to be useful only as a comment as it does not alter
+ Code. It is tempting to redefine PACIFY_CC so that it will suppress Code
+ when configuring without --enable-gcc-warnings. However, that would mean
+ that, for maintainers, Bison would compile with potentially less warnings
+ and safer logic than it would for users. Due to the overhead of M4,
+ suppressing Code is unlikely to offer any significant improvement in
+ Bison's performance anyway. */
+#define PACIFY_CC(Code) Code
+
#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+ || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
# define __attribute__(Spec) /* empty */
# endif
+#endif
+
/* The __-protected variants of `format' and `printf' attributes
are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-# define __format__ format
-# define __printf__ printf
-# endif
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
#endif
-
-/*------.
-| NLS. |
-`------*/
-
-#ifdef HAVE_LOCALE_H
-# include <locale.h>
-#endif
-#ifndef HAVE_SETLOCALE
-# define setlocale(Category, Locale)
+#ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
#endif
-#ifdef ENABLE_NLS
-# include <libintl.h>
-# define _(Text) gettext (Text)
-#else
-# undef bindtextdomain
-# define bindtextdomain(Domain, Directory)
-# undef textdomain
-# define textdomain(Domain)
-# undef ngettext
-# define ngettext(Singular, Plural, Number) \
- ((Number == 1) ? Singular : Plural)
-# define _(Text) Text
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
#endif
-#define N_(Text) Text
+#define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
-/*-------------------------------.
-| Fix broken compilation flags. |
-`-------------------------------*/
+/*------.
+| NLS. |
+`------*/
-#ifndef LOCALEDIR
-# define LOCALEDIR "/usr/local/share/locale"
-#endif
+#include <locale.h>
+
+#include <gettext.h>
+#define _(Msgid) gettext (Msgid)
+#define N_(Msgid) (Msgid)
/*-----------.
| Booleans. |
`-----------*/
-#ifndef TRUE
-# define TRUE (1)
-# define FALSE (0)
-#endif
-typedef int bool;
+#include <stdbool.h>
+
+
+
+/*-------------.
+| Assertions. |
+`-------------*/
+
+/* In the past, Bison defined aver to simply invoke abort in the case of
+ a failed assertion. The rationale was that <assert.h>'s assertions
+ were too heavyweight and could be disabled too easily. See
+ discussions at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00080.html>
+ <http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00111.html>.
+
+ However, normal assert output can be helpful during development and
+ in bug reports from users. Moreover, it's not clear now that
+ <assert.h>'s assertions are significantly heavyweight. Finally, if
+ users want to experiment with disabling assertions, it's debatable
+ whether it's our responsibility to stop them. See discussion
+ starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00013.html>.
+
+ For now, we use assert but we call it aver throughout Bison in case
+ we later wish to try another scheme.
+*/
+#include <assert.h>
+#define aver assert
/*-----------.
| Obstacks. |
`-----------*/
-# define obstack_chunk_alloc xmalloc
-# define obstack_chunk_free free
-# include "obstack.h"
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+#include <obstack.h>
#define obstack_sgrow(Obs, Str) \
obstack_grow (Obs, Str, strlen (Str))
-#define obstack_fgrow1(Obs, Format, Arg1) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1); \
- obstack_grow (Obs, buf, strlen (buf)); \
+#define obstack_fgrow1(Obs, Format, Arg1) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1); \
+ obstack_grow (Obs, buf, strlen (buf)); \
} while (0)
-#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2); \
- obstack_grow (Obs, buf, strlen (buf)); \
+#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2); \
+ obstack_grow (Obs, buf, strlen (buf)); \
} while (0)
-#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2, Arg3); \
- obstack_grow (Obs, buf, strlen (buf)); \
+#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2, Arg3); \
+ obstack_grow (Obs, buf, strlen (buf)); \
} while (0)
-#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \
-do { \
- char buf[4096]; \
- sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \
- obstack_grow (Obs, buf, strlen (buf)); \
+#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \
+ obstack_grow (Obs, buf, strlen (buf)); \
} while (0)
-/*---------------------------------.
-| Machine-dependencies for Bison. |
-`---------------------------------*/
-#ifdef eta10
-# define MAXSHORT 2147483647
-# define MINSHORT -2147483648
-#else
-# define MAXSHORT 32767
-# define MINSHORT -32768
-#endif
+/*-----------------------------------------.
+| Extensions to use for the output files. |
+`-----------------------------------------*/
-#if defined (MSDOS) && !defined (__GO32__)
-# define BITS_PER_WORD 16
-# define MAXTABLE 16383
-#else
-# define BITS_PER_WORD 32
-# define MAXTABLE 32767
+#ifndef OUTPUT_EXT
+# define OUTPUT_EXT ".output"
#endif
-#define WORDSIZE(n) (((n) + BITS_PER_WORD - 1) / BITS_PER_WORD)
-#define SETBIT(x, i) ((x)[(i)/BITS_PER_WORD] |= (1<<((i) % BITS_PER_WORD)))
-#define RESETBIT(x, i) ((x)[(i)/BITS_PER_WORD] &= ~(1<<((i) % BITS_PER_WORD)))
-#define BITISSET(x, i) (((x)[(i)/BITS_PER_WORD] & (1<<((i) % BITS_PER_WORD))) != 0)
-
-
-/* Extensions to use for the output files. */
-
-#ifdef VMS
- /* VMS. */
-# define EXT_TAB "_tab"
-# define EXT_OUTPUT ".output"
-# define EXT_STYPE_H "_stype"
-# define EXT_GUARD_C "_guard"
-#else /* ! VMS */
-# ifdef MSDOS
- /* MS DOS. */
-# define EXT_TAB "_tab"
-# define EXT_OUTPUT ".out"
-# define EXT_STYPE_H ".sth"
-# define EXT_GUARD_C ".guc"
-# else /* ! MSDOS */
- /* Standard. */
-# define EXT_TAB ".tab"
-# define EXT_OUTPUT ".output"
-# define EXT_STYPE_H ".stype"
-# define EXT_GUARD_C ".guard"
-# endif /* ! MSDOS */
-#endif /* ! VMS */
-
-#if defined (VMS) & !defined (__VMS_POSIX)
-# ifndef BISON_SIMPLE
-# define BISON_SIMPLE "GNU_BISON:[000000]BISON.SIMPLE"
-# endif
-# ifndef BISON_HAIRY
-# define BISON_HARIRY "GNU_BISON:[000000]BISON.HAIRY"
-# endif
+#ifndef TAB_EXT
+# define TAB_EXT ".tab"
#endif
-#if defined (_MSC_VER)
-# ifndef BISON_SIMPLE
-# define BISON_SIMPLE "c:/usr/local/lib/bison.simple"
-# endif
-# ifndef BISON_HAIRY
-# define BISON_HAIRY "c:/usr/local/lib/bison.hairy"
-# endif
+#ifndef DEFAULT_TMPDIR
+# define DEFAULT_TMPDIR "/tmp"
#endif
-/*---------------------------------.
-| Debugging the memory allocator. |
-`---------------------------------*/
+
+/*---------------------.
+| Free a linked list. |
+`---------------------*/
+
+#define LIST_FREE(Type, List) \
+do { \
+ Type *_node, *_next; \
+ for (_node = List; _node; _node = _next) \
+ { \
+ _next = _node->next; \
+ free (_node); \
+ } \
+} while (0)
+
+
+/*---------------------------------------------.
+| Debugging memory allocation (must be last). |
+`---------------------------------------------*/
# if WITH_DMALLOC
# define DMALLOC_FUNC_CHECK
# include <dmalloc.h>
# endif /* WITH_DMALLOC */
-#endif /* BISON_SYSTEM_H */
+#endif /* ! BISON_SYSTEM_H */
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