X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7bb4d91420706c096e339dffe2ce24a361fb67a5..62e5fc6ac9bd59f801ca43e7eb81d19960f3e306:/src/system.h diff --git a/src/system.h b/src/system.h index 36652456..e3f17d89 100644 --- a/src/system.h +++ b/src/system.h @@ -1,69 +1,238 @@ +/* System-dependent definitions for Bison. + + 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 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 + 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, see . */ + #ifndef BISON_SYSTEM_H -#define BISON_SYSTEM_H - -#ifdef HAVE_CONFIG_H -# include -#endif - -#ifdef MSDOS -#include -#endif - -#ifdef _MSC_VER -#include -#include -#define getpid _getpid -#endif - -#if defined(HAVE_STDLIB_H) || defined(MSDOS) -#include -#endif - -#if defined(HAVE_UNISTD_H) -#include -#endif - -#if (defined(VMS) || defined(MSDOS)) && !defined(HAVE_STRING_H) -#define HAVE_STRING_H 1 -#endif - -#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 - -#ifdef HAVE_LOCALE_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 + +# include +# include +# include +# include + +# if HAVE_SYS_TYPES_H +# include +# endif + +# include +# include + +# 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 + +// Version mismatch. +# define EX_MISMATCH 63 + +/*---------. +| Gnulib. | +`---------*/ + +# include +# include +# include + + +/*-----------------. +| 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 (! 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 + +# 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. | +`------*/ + # include -#endif -#ifndef HAVE_SETLOCALE -# define setlocale(Category, Locale) -#endif - -#ifdef ENABLE_NLS -# include -# define _(Text) gettext (Text) -#else -# define bindtextdomain(Domain, Directory) -# define textdomain(Domain) -# define _(Text) Text -#endif -#define N_(Text) Text - -/* In the meantime, waiting for Automake. */ -#define PACKAGE "bison" -#define LOCALEDIR "/usr/local/share/locale" - -#endif /* BISON_SYSTEM_H */ + +# include +# define _(Msgid) gettext (Msgid) +# define N_(Msgid) (Msgid) + + +/*-----------. +| Booleans. | +`-----------*/ + +# include + + + +/*-------------. +| 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 + . + + 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 + +# 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)); \ +} while (0) + +# 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)); \ +} 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)); \ +} while (0) + + + +/*-----------------------------------------. +| Extensions to use for the output files. | +`-----------------------------------------*/ + +# ifndef OUTPUT_EXT +# define OUTPUT_EXT ".output" +# endif + +# ifndef TAB_EXT +# define TAB_EXT ".tab" +# endif + +# ifndef DEFAULT_TMPDIR +# define DEFAULT_TMPDIR "/tmp" +# 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 */