X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/234a3be30308bdf67bda1fe67fce08f3cc55e749..d0d3313d10a28aa6fe77f158d61b84424aa9b3ce:/src/system.h?ds=sidebyside diff --git a/src/system.h b/src/system.h index 83e2b0a5..d3c544b4 100644 --- a/src/system.h +++ b/src/system.h @@ -1,10 +1,11 @@ -/* 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 @@ -12,164 +13,178 @@ 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 . */ #ifndef BISON_SYSTEM_H -#define BISON_SYSTEM_H +# define BISON_SYSTEM_H + +/* flex 2.5.31 gratutiously defines macros like INT8_MIN. But this + runs afoul of pre-C99 compilers that have or + , which are included below if available. It also runs + afoul of pre-C99 compilers that define these macros in . */ +# 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 -#ifdef HAVE_CONFIG_H -# include -#endif +# include +# include +# include +# include -#include +# if HAVE_SYS_TYPES_H +# include +# endif -#include +# include +# include -#ifdef MSDOS -# include -#endif +# 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 -#ifdef _MSC_VER -# include -# include -# define getpid _getpid -#endif +// Version mismatch. +# define EX_MISMATCH 63 -#if HAVE_STDLIB_H -# include -#endif +/*---------. +| Gnulib. | +`---------*/ -#if HAVE_UNISTD_H -# include -#endif +# include +# include +# include -#if defined(STDC_HEADERS) || defined(HAVE_STRING_H) -# include -/* An ANSI string.h and pre-ANSI memory.h might conflict. */ -# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H) -# include -# 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 -/* memory.h and strings.h conflict on some systems. */ -#endif /* not STDC_HEADERS and not HAVE_STRING_H */ - -#if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H) -# include -#endif - -#include -#ifndef errno -extern int errno; -#endif - -#if PROTOTYPES -# define PARAMS(p) p -#else -# define PARAMS(p) () -#endif /*-----------------. | GCC extensions. | `-----------------*/ -#ifndef __attribute__ +/* 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__ -# define __attribute__(Spec) /* empty */ +# 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 -#endif +# ifndef ATTRIBUTE_NORETURN +# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) +# endif + +# ifndef ATTRIBUTE_UNUSED +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +# endif + +# define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__) /*------. | NLS. | `------*/ -#ifdef HAVE_LOCALE_H # include -#endif -#ifndef HAVE_SETLOCALE -# define setlocale(Category, Locale) -#endif -#ifdef ENABLE_NLS -# include -# define _(Text) gettext (Text) -#else -# undef bindtextdomain -# define bindtextdomain(Domain, Directory) -# undef textdomain -# define textdomain(Domain) -# define _(Text) Text -#endif -#define N_(Text) Text +# include +# define _(Msgid) gettext (Msgid) +# define N_(Msgid) (Msgid) -/*-------------------------------. -| Fix broken compilation flags. | -`-------------------------------*/ +/*-----------. +| Booleans. | +`-----------*/ -#ifndef LOCALEDIR -# define LOCALEDIR "/usr/local/share/locale" -#endif +# include -#endif /* BISON_SYSTEM_H */ -/*-----------. -| Booleans. | -`-----------*/ +/*-------------. +| Assertions. | +`-------------*/ + +/* In the past, Bison defined aver to simply invoke abort in the case of + a failed assertion. The rationale was that 's assertions + were too heavyweight and could be disabled too easily. See + discussions at + + . + + However, normal assert output can be helpful during development and + in bug reports from users. Moreover, it's not clear now that + '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 + . -#ifndef TRUE -# define TRUE (1) -# define FALSE (0) -#endif -typedef int bool; + For now, we use assert but we call it aver throughout Bison in case + we later wish to try another scheme. +*/ +# include +# 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 -#define obstack_sgrow(Obs, Str) \ +# define obstack_sgrow(Obs, Str) \ obstack_grow (Obs, Str, strlen (Str)) -#define obstack_fgrow1(Obs, Format, Arg1) \ +# 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) \ +# 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) \ +# 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) \ +# define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \ do { \ char buf[4096]; \ sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \ @@ -177,70 +192,47 @@ do { \ } while (0) -/*---------------------------------. -| Machine-dependencies for Bison. | -`---------------------------------*/ - -#ifdef eta10 -# define MAXSHORT 2147483647 -# define MINSHORT -2147483648 -#else -# define MAXSHORT 32767 -# define MINSHORT -32768 -#endif - -#if defined (MSDOS) && !defined (__GO32__) -# define BITS_PER_WORD 16 -# define MAXTABLE 16383 -#else -# define BITS_PER_WORD 32 -# define MAXTABLE 32767 -#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" + +/*-----------------------------------------. +| Extensions to use for the output files. | +`-----------------------------------------*/ + +# ifndef OUTPUT_EXT +# define OUTPUT_EXT ".output" # endif -#endif -#if defined (_MSC_VER) -# ifndef BISON_SIMPLE -# define BISON_SIMPLE "c:/usr/local/lib/bison.simple" +# ifndef TAB_EXT +# define TAB_EXT ".tab" # endif -# ifndef BISON_HAIRY -# define BISON_HAIRY "c:/usr/local/lib/bison.hairy" + +# ifndef DEFAULT_TMPDIR +# define DEFAULT_TMPDIR "/tmp" # endif -#endif + + + +/*---------------------. +| 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 +# endif /* WITH_DMALLOC */ + +#endif /* ! BISON_SYSTEM_H */