X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/381fb12e1e6c2f028685d102386bc32725d14f48..464c692789eba089bb21ebd3983ebeaa4a8d3312:/src/system.h?ds=sidebyside diff --git a/src/system.h b/src/system.h index 4f95e205..068b308a 100644 --- a/src/system.h +++ b/src/system.h @@ -1,5 +1,6 @@ -/* system-dependent definitions for Bison. - Copyright 2000, 2001, 2002 Free Software Foundation, Inc. +/* System-dependent definitions for Bison. + + Copyright (C) 2000, 2001, 2002, 2003 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 @@ -18,13 +19,19 @@ #ifndef BISON_SYSTEM_H #define BISON_SYSTEM_H -#ifdef HAVE_CONFIG_H +#if HAVE_CONFIG_H # include #endif +#include #include -#include +/* Verify a requirement at compile-time (unlike assert, which is runtime). */ +#define verify(name, assertion) struct name {char name[(assertion) ? 1 : -1];} + +#if HAVE_SYS_TYPES_H +# include +#endif #if HAVE_STDLIB_H # include @@ -57,73 +64,57 @@ /* 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 +#include -/* AIX requires this to be the first thing in the file. */ -#ifndef __GNUC__ -# if HAVE_ALLOCA_H -# include +#if HAVE_UINTPTR_T +# if HAVE_INTTYPES_H +# include # else -# ifdef _AIX - #pragma alloca -# else -# ifndef alloca /* predefined by HP cc +Olibcalls */ -char *alloca (); -# endif +# if HAVE_STDINT_H +# include # endif # endif +#else +/* This isn't perfect, but it's good enough for Bison, which needs + only to hash pointers. */ +typedef size_t uintptr_t; #endif -#ifndef PARAMS -# if defined PROTOTYPES || defined __STDC__ -# define PARAMS(Args) Args -# else -# define PARAMS(Args) () -# endif -#endif - -# include "xalloc.h" +#include +#define CALLOC(P, N) ((P) = xcalloc (N, sizeof *(P))) +#define MALLOC(P, N) ((P) = xmalloc ((N) * sizeof *(P))) +#define REALLOC(P, N) ((P) = xrealloc (P, (N) * sizeof *(P))) /* From xstrndup.c. */ -char *xstrndup PARAMS ((const char *s, size_t n)); +char *xstrndup (const char *s, size_t n); + /*---------------------. | Missing prototypes. | `---------------------*/ -#if !HAVE_DECL_STPCPY -char *stpcpy PARAMS ((char *dest, const char *src)); -#endif - -#if !HAVE_DECL_STRCHR -char *strchr(const char *s, int c); +#if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY +char *stpcpy (char *dest, const char *src); #endif -#if !HAVE_DECL_STRNDUP -char *strndup PARAMS ((const char *s, size_t size)); +#if defined HAVE_DECL_STRCHR && !HAVE_DECL_STRCHR +char *strchr (const char *s, int c); #endif -#if !HAVE_DECL_STRSPN -size_t strspn(const char *s, const char *accept); +#if defined HAVE_DECL_STRSPN && !HAVE_DECL_STRSPN +size_t strspn (const char *s, const char *accept); #endif -#if !HAVE_DECL_STRNLEN -size_t strnlen PARAMS ((const char *s, size_t maxlen)); +#if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN +size_t strnlen (const char *s, size_t maxlen); #endif -#if !HAVE_DECL_MEMCHR -void *memchr PARAMS ((const void *s, int c, size_t n)); +#if defined HAVE_DECL_MEMCHR && !HAVE_DECL_MEMCHR +void *memchr (const void *s, int c, size_t n); #endif -#if !HAVE_DECL_MEMRCHR -void *memrchr PARAMS ((const void *s, int c, size_t n)); +#if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR +void *memrchr (const void *s, int c, size_t n); #endif @@ -132,33 +123,49 @@ void *memrchr PARAMS ((const void *s, int c, size_t n)); | GCC extensions. | `-----------------*/ +/* Use this to suppress gcc's `...may be used before initialized' + warnings. */ +#ifdef lint +# define IF_LINT(Code) Code +#else +# define IF_LINT(Code) /* empty */ +#endif + #ifndef __attribute__ /* This feature is available in gcc versions 2.5 and later. */ # if !defined (__GNUC__) || __GNUC__ < 2 || \ (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ # 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 +#ifndef ATTRIBUTE_NORETURN +# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) +#endif + +#ifndef ATTRIBUTE_UNUSED +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#endif /*------. | NLS. | `------*/ -#ifdef HAVE_LOCALE_H +#if HAVE_LOCALE_H # include #endif -#ifndef HAVE_SETLOCALE +#if !HAVE_SETLOCALE # define setlocale(Category, Locale) #endif -#include "libgettext.h" +#include #define _(Msgid) gettext (Msgid) #define N_(Msgid) (Msgid) @@ -176,11 +183,23 @@ void *memrchr PARAMS ((const void *s, int c, size_t n)); | Booleans. | `-----------*/ -#ifndef TRUE -# define TRUE (1) -# define FALSE (0) +#if HAVE_STDBOOL_H +# include +#else +# ifndef __bool_true_false_are_defined +# if ! HAVE__BOOL +# ifdef __cplusplus +typedef bool _Bool; +# else +typedef unsigned char _Bool; +# endif +# endif +# define bool _Bool +# define false 0 +# define true 1 +# define __bool_true_false_are_defined 1 +# endif #endif -typedef int bool; /*-----------. @@ -189,7 +208,7 @@ typedef int bool; # define obstack_chunk_alloc xmalloc # define obstack_chunk_free free -# include "obstack.h" +# include #define obstack_sgrow(Obs, Str) \ obstack_grow (Obs, Str, strlen (Str)) @@ -223,31 +242,6 @@ 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. | @@ -255,23 +249,17 @@ do { \ #ifdef VMS /* VMS. */ -# define EXT_TAB "_tab" -# define EXT_OUTPUT ".output" -# define EXT_STYPE_H "_stype" -# define EXT_GUARD_C "_guard" +# define TAB_EXT "_tab" +# define OUTPUT_EXT ".output" #else /* ! VMS */ # ifdef MSDOS /* MS DOS. */ -# define EXT_TAB "_tab" -# define EXT_OUTPUT ".out" -# define EXT_STYPE_H ".sth" -# define EXT_GUARD_C ".guc" +# define TAB_EXT "_tab" +# define OUTPUT_EXT ".out" # else /* ! MSDOS */ /* Standard. */ -# define EXT_TAB ".tab" -# define EXT_OUTPUT ".output" -# define EXT_STYPE_H ".stype" -# define EXT_GUARD_C ".guard" +# define TAB_EXT ".tab" +# define OUTPUT_EXT ".output" # endif /* ! MSDOS */ #endif /* ! VMS */ @@ -281,13 +269,6 @@ do { \ -/*----------------------------. -| As memcpy, but for shorts. | -`----------------------------*/ - -#define shortcpy(Dest, Src, Num) \ - memcpy (Dest, Src, Num * sizeof (short)) - /*---------------------. | Free a linked list. | `---------------------*/