common

su 的源代码库

iff	AST_COMMON
hdr	pthread,stdarg,stddef,types
sys	types
typ	long.double,size_t,ssize_t

mac	SF_APPEND,SF_CLOSE	sys/stat.h sys/socket.h

dll	import note{ Microsoft import/export nonsense }end execute{
	__declspec(dllimport) int foo;
	int main() { return foo == 5 ? 0 : 1; }
	int	bar = 5;
	int*	_imp__foo = &bar;
}end

std	proto note{ standard C prototypes ok }end compile{
	extern int foo(int, int);
	bar() { foo(1, 1); }
}end

tst	ptr_void note{ standard C void* ok }end compile{
	extern void* foo();
	void* bar() { return foo(); }
}end

cat{
	/* disable non-standard linux/gnu inlines */
	#ifdef __GNUC__	
	#	undef	__OPTIMIZE_SIZE__
	#	define	__OPTIMIZE_SIZE__	1
	#endif

	/* __STD_C indicates that the language is ANSI-C or C++ */
	#if !defined(__STD_C) && __STDC__
	#	define	__STD_C		1
	#endif
	#if !defined(__STD_C) && (__cplusplus || c_plusplus)
	#	define __STD_C		1
	#endif
	#if !defined(__STD_C) && _std_proto
	#	define __STD_C		1
	#endif
	#if !defined(__STD_C)
	#	define __STD_C		0
	#endif

	/* extern symbols must be protected against C++ name mangling */
	#ifndef _BEGIN_EXTERNS_
	#	if __cplusplus || c_plusplus
	#		define _BEGIN_EXTERNS_	extern "C" {
	#		define _END_EXTERNS_	}
	#	else
	#		define _BEGIN_EXTERNS_
	#		define _END_EXTERNS_
	#	endif
	#endif

	/* _ARG_ simplifies function prototyping among flavors of C */
	#ifndef _ARG_
	#	if __STD_C
	#		define _ARG_(x)	x
	#	else
	#		define _ARG_(x)	()
	#	endif
	#endif

	/* _NIL_ simplifies defining nil pointers to a given type */
	#ifndef _NIL_
	#	define _NIL_(x)	((x)0)
	#endif

	/* __INLINE__ is the inline keyword */
	#if !defined(__INLINE__) && defined(__cplusplus)
	#	define __INLINE__	inline
	#endif
	#if !defined(__INLINE__) && defined(_WIN32) && !defined(__GNUC__)
	#	define __INLINE__	__inline
	#endif

	/* Void_t is defined so that Void_t* can address any type */
	#ifndef Void_t
	#	if __STD_C
	#		define Void_t		void
	#	else
	#		define Void_t		char
	#	endif
	#endif

	/* windows variants and veneers */
	#if !defined(_WINIX) && (_UWIN || __CYGWIN__ || __EMX__)
	#	define _WINIX		1
	#endif

	/* dynamic linked library external scope handling */
	#ifdef __DYNAMIC__
	#	undef	__DYNAMIC__
	#	ifndef _DLL
	#		define _DLL		1
	#	endif
	#endif
	#if _dll_import
	#	if _BLD_STATIC && !_BLD_DLL
	#		undef	_DLL
	#	else
	#		if !_UWIN && !defined(_DLL)
	#			define _DLL		1
	#		endif
	#	endif
	#	if !defined(__EXPORT__) && _BLD_DLL
	#		define __EXPORT__	__declspec(dllexport)
	#	endif
	#	if !defined(__IMPORT__) && ( _BLD_DLL || defined(_DLL) )
	#		define __IMPORT__	__declspec(dllimport)
	#	endif
	#	if _BLD_DLL && _UWIN
	#	define __DYNAMIC__(v)		(_ast_getdll()->_ast_ ## v)
	#	endif
	#endif
	#if !defined(_astimport)
	#	if defined(__IMPORT__) && defined(_DLL)
	#		define _astimport	__IMPORT__
	#	else
	#		define _astimport	extern
	#	endif
	#endif
	#if _dll_import && ( !_BLD_DLL || _WINIX && !_UWIN )
	#	ifdef __STDC__
	#	define __EXTERN__(T,obj)	extern T obj; T* _imp__ ## obj = &obj
	#	define __DEFINE__(T,obj,val)	T obj = val; T* _imp__ ## obj = &obj
	#	else
	#	define __EXTERN__(T,obj)	extern T obj; T* _imp__/**/obj = &obj
	#	define __DEFINE__(T,obj,val)	T obj = val; T* _imp__/**/obj = &obj
	#	endif
	#else
	#	define __EXTERN__(T,obj)	extern T obj
	#	define __DEFINE__(T,obj,val)	T obj = val
	#endif
}end

tst	ast_LL note{ LL numeric suffix supported }end compile{
	int i = 1LL;
	unsigned int u = 1ULL; /* NOTE: some compilers choke on 1LLU */
}end

tst	- -DN=1 - -DN=2 - -DN=3 - -DN=4 - -DN=5 - -DN=6 - -DN=7 - -DN=8 - -DN=0 output{
	#define _BYTESEX_H

	#include <sys/types.h>

	_BEGIN_EXTERNS_
	extern int	sprintf _ARG_((const char*, ...));
	extern int	strcmp _ARG_((const char*, const char*));
	_END_EXTERNS_

	#if _STD_
	#if N == 1
	#define _ast_int8_t	long
	#define _ast_int8_str	"long"
	#endif
	#if N == 2
	#define _ast_int8_t	__int64
	#define _ast_int8_str	"__int64"
	#endif
	#if N == 3
	#define _ast_int8_t	long long
	#define _ast_int8_str	"long long"
	#endif
	#if N == 4
	#define _ast_int8_t	__int64_t
	#define _ast_int8_str	"__int64_t"
	#endif
	#if N == 5
	#define _ast_int8_t	_int64_t
	#define _ast_int8_str	"_int64_t"
	#endif
	#if N == 6
	#define _ast_int8_t	int64_t
	#define _ast_int8_str	"int64_t"
	#endif
	#if N == 7
	#define _ast_int8_t	_int64
	#define _ast_int8_str	"_int64"
	#endif
	#if N == 8
	#define _ast_int8_t	int64
	#define _ast_int8_str	"int64"
	#endif
	#endif

	#define elementsof(x)	(sizeof(x)/sizeof(x[0]))
	
	static char			i_char = 1;
	static short			i_short = 1;
	static int			i_int = 1;
	static long			i_long = 1L;
	#ifdef _ast_int8_t
	#if _ast_LL
	static _ast_int8_t		i_long_long = 1LL;
	static unsigned _ast_int8_t	u_long_long = 18446744073709551615ULL;
	#else
	static _ast_int8_t		i_long_long = 1;
	static unsigned _ast_int8_t	u_long_long = 18446744073709551615;
	#endif
	#endif
	
	static struct
	{
		char*	name;
		int	size;
		char*	swap;
	} int_type[] = 
	{
		"char",		sizeof(char),		(char*)&i_char,
		"short",	sizeof(short),		(char*)&i_short,
		"int",		sizeof(int),		(char*)&i_int,
		"long",		sizeof(long),		(char*)&i_long,
	#ifdef _ast_int8_t
		_ast_int8_str,	sizeof(_ast_int8_t),	(char*)&i_long_long,
	#endif
	};
	
	static int	int_size[] = { 1, 2, 4, 8 };
	
	int
	main()
	{
		register int	t;
		register int	s;
		register int	m = 1;
		register int	b = 1;
		register int	w = 0;
	
	#ifdef _ast_int8_t
		unsigned _ast_int8_t	p;
		char			buf[64];

		if (int_type[elementsof(int_type)-1].size <= 4)
			return 1;
		p = 0x12345678;
		p <<= 32;
		p |= 0x9abcdef0;
		sprintf(buf, "0x%016llx", p);
		if (strcmp(buf, "0x123456789abcdef0"))
			return 1;
	#endif
		for (s = 0; s < elementsof(int_size); s++)
		{
			for (t = 0; t < elementsof(int_type) && int_type[t].size < int_size[s]; t++);
			if (t < elementsof(int_type))
			{
				m = int_size[s];
	#if __INTERIX
				if (m == 8)
				{
					printf("#ifdef _MSC_VER\n");
					printf("#define _ast_int8_t	__int64\n");
					printf("#else\n");
					printf("#define _ast_int8_t	long long\n");
					printf("#endif\n");
				}
				else
	#endif
				printf("#define _ast_int%d_t		%s\n", m, int_type[t].name);
				if (m > 1)
				{
					if (*int_type[t].swap)
						w |= b;
					b <<= 1;
				}
			}
		}
		printf("#define _ast_intmax_t		_ast_int%d_t\n", m);
		if (m == sizeof(long))
			printf("#define _ast_intmax_long		1\n");
		printf("#define _ast_intswap		%d\n", w);
		printf("\n");
		return 0;
	}
}end

tst	- -DN=1 - -DN=0 output{
	#define _BYTESEX_H

	#include <sys/types.h>

	_BEGIN_EXTERNS_
	extern int	sprintf _ARG_((const char*, ...));
	extern int	strcmp _ARG_((const char*, const char*));
	_END_EXTERNS_

	#if !N || !_STD_
	#undef	_typ_long_double
	#endif

	#define elementsof(x)	(sizeof(x)/sizeof(x[0]))
	
	static struct
	{
		char*	name;
		int	size;
	} flt_type[] = 
	{
		"float",	sizeof(float),
		"double",	sizeof(double),
	#ifdef _typ_long_double
		"long double",	sizeof(long double),
	#endif
	};
	
	int
	main()
	{
		register int	t;
		register int	m = 1;
	
	#ifdef _typ_long_double
		long double	p;
		char		buf[64];

		if (flt_type[elementsof(flt_type)-1].size <= sizeof(double))
			return 1;
		p = 1.12345E-55;
		sprintf(buf, "%1.5LE", p);
		if (strcmp(buf, "1.12345E-55"))
			return 1;
	#endif
		for (t = 0; t < elementsof(flt_type); t++)
		{
			while (t < (elementsof(flt_type) - 1) && flt_type[t].size == flt_type[t + 1].size)
				t++;
			m = flt_type[t].size;
			printf("#define _ast_flt%d_t		%s\n", flt_type[t].size, flt_type[t].name);
		}
		printf("#define _ast_fltmax_t		_ast_flt%d_t\n", m);
		if (m == sizeof(double))
			printf("#define _ast_fltmax_double		1\n");
		return 0;
	}
}end

tst	- -DTRY=1 - -DTRY=1 -Dvoid=char - -DTRY=2 - -DTRY=3 - -DTRY=4 output{
	#define printf	______printf
	#if _STD_ && _hdr_stdarg
	#include <stdarg.h>
	static void
	varyfunny(int* p, ...)
	{
		va_list	ap;
		va_start(ap, p);
	#if TRY == 1
		*p = *ap++ != 0;
	#endif /*TRY == 1*/
	#if TRY == 2
		*p = *ap != 0;
	#endif /*TRY == 2*/
	#if TRY == 3
		*p = ap++ != 0;
	#endif /*TRY == 3*/
		va_end(ap);
	}
	#else
	#include <varargs.h>
	static void
	varyfunny(va_alist)
	va_dcl
	{
		va_list	ap;
		int*	p;
		va_start(ap);
		p = va_arg(ap, int*);
	#if TRY == 1
		*p = *ap++ != 0;
	#endif /*TRY == 1*/
	#if TRY == 2
		*p = *ap != 0;
	#endif /*TRY == 2*/
	#if TRY == 3
		*p = ap++ != 0;
	#endif /*TRY == 3*/
		va_end(ap);
	}
	#endif
	#undef	printf
	int
	main()
	{
		int	r;
		printf("\n#ifndef va_listref\n");
	#if TRY == 4
		printf("#define va_listref(p) (&(p))\t");
			printf("/* pass va_list to varargs function */\n");
		printf("#define va_listval(p) (*(p))\t");
			printf("/* retrieve va_list from va_arg(ap,va_listarg) */\n");
		printf("#define va_listarg va_list*\t");
			printf("/* va_arg() va_list type */\n");
	#else
		varyfunny(&r);
		printf("#define va_listref(p) (p)\t");
			printf("/* pass va_list to varargs function */\n");
		if (sizeof(va_list) > sizeof(void*))
			printf("#define va_listval(p) (*(p))\t");
		else
			printf("#define va_listval(p) (p)\t");
			printf("/* retrieve va_list from va_arg(ap,va_listarg) */\n");
	#if TRY == 2
		printf("#define va_listarg va_list*\t");
	#else
		printf("#define va_listarg va_list\t");
	#endif /*TRY == 2*/
			printf("/* va_arg() va_list type */\n");
	#endif /*TRY == 4*/
	
	#if !defined(va_copy)
	#if defined(__va_copy)
		printf("#ifndef va_copy\n");
		printf("#define va_copy(to,fr) __va_copy(to,fr)\t");
			printf("/* copy va_list fr -> to */\n");
		printf("#endif\n");
	#else
	#if TRY == 2
		printf("#ifndef va_copy\n");
		printf("#define va_copy(to,fr) memcpy(to,fr,sizeof(va_list))\t");
			printf("/* copy va_list fr -> to */\n");
		printf("#endif\n");
	#else
		printf("#ifndef va_copy\n");
		printf("#define va_copy(to,fr) ((to)=(fr))\t");
			printf("/* copy va_list fr -> to */\n");
		printf("#endif\n");
	#endif
	#endif
	#endif
	
		r = 1;
		printf("#undef	_ast_va_list\n");
		printf("#ifdef	va_start\n");
		printf("#define _ast_va_list va_list\n");
		printf("#else\n");
	#if TRY == 1 || TRY == 2
		printf("#define _ast_va_list void*");
	#else
	#if TRY == 3
		if (sizeof(va_list) == sizeof(long))
			printf("#define _ast_va_list long");
		else if (sizeof(va_list) == sizeof(short))
			printf("#define _ast_va_list short");
		else
			printf("#define _ast_va_list int");
	#else
	#if defined(_M_ALPHA) && defined(_VA_LIST_DEFINED)
		printf("typedef struct { char *a0; int offset; } _ast_va_list_t;\n");
		printf("#define _ast_va_list _ast_va_list_t");
	#else
		printf("#if __STD_C\n");
		printf("#include <stdarg.h>\n");
		printf("#else\n");
		printf("#include <varargs.h>\n");
		printf("#endif\n");
		printf("#define _ast_va_list va_list\n");
		r = 0;
	#endif
	#endif
	#endif
		if (r)
			printf("\t/* va_list that avoids #include */\n");
		printf("#endif\n");
		printf("#endif\n");
		return 0;
	}
}end

cat{
	#ifndef _AST_STD_H
	#	if __STD_C && _hdr_stddef
	#	include	<stddef.h>
	#	endif
	#	if _sys_types
	#	include	<sys/types.h>
	#	endif
	#endif
	#if !_typ_size_t
	#	define _typ_size_t	1
		typedef int size_t;
	#endif
	#if !_typ_ssize_t
	#	define _typ_ssize_t	1
		typedef int ssize_t;
	#endif
}end