/*    handy.h
 *
 *    Copyright (c) 1991-1994, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

#if !defined(__STDC__)
#ifdef NULL
#undef NULL
#endif
#ifndef I286
#  define NULL 0
#else
#  define NULL 0L
#endif
#endif

#define Null(type) ((type)NULL)
#define Nullch Null(char*)
#define Nullfp Null(PerlIO*)
#define Nullsv Null(SV*)

#ifdef TRUE
#undef TRUE
#endif
#ifdef FALSE
#undef FALSE
#endif
#define TRUE (1)
#define FALSE (0)


/* XXX Configure ought to have a test for a boolean type, if I can
   just figure out all the headers such a test needs.
   Andy Dougherty	August 1996
*/
/* bool is built-in for g++-2.6.3, which might be used for an extension.
   If the extension includes <_G_config.h> before this file then
   _G_HAVE_BOOL will be properly set.  If, however, the extension includes
   this file first, then you will have to manually set -DHAS_BOOL in 
   your command line to avoid a conflict.
*/
#ifdef _G_HAVE_BOOL
# if _G_HAVE_BOOL
#  ifndef HAS_BOOL
#   define HAS_BOOL 1
#  endif
# endif
#endif

/* The NeXT dynamic loader headers will not build with the bool macro
   So declare them now to clear confusion.
*/
#ifdef NeXT
# undef FALSE
# undef TRUE
  typedef enum bool { FALSE = 0, TRUE = 1 } bool;
# define ENUM_BOOL 1
# ifndef HAS_BOOL
#  define HAS_BOOL 1
# endif /* !HAS_BOOL */
#endif /* NeXT */

#ifndef HAS_BOOL
# ifdef UTS
#  define bool int
# else
#  define bool char
# endif
#endif

/* XXX A note on the perl source internal type system.  The
   original intent was that I32 be *exactly* 32 bits.

   Currently, we only guarantee that I32 is *at least* 32 bits.
   Specifically, if int is 64 bits, then so is I32.  (This is the case
   for the Cray.)  This has the advantage of meshing nicely with
   standard library calls (where we pass an I32 and the library is
   expecting an int), but the disadvantage that an I32 is not 32 bits.
   Andy Dougherty	August 1996
*/

typedef char		I8;
typedef unsigned char	U8;
/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
   Please search CHAR_MAX in perl.h for further details. */
#define U8_MAX PERL_UCHAR_MAX
#define U8_MIN PERL_UCHAR_MIN

typedef short		I16;
typedef unsigned short	U16;
#define I16_MAX PERL_SHORT_MAX
#define I16_MIN PERL_SHORT_MIN
#define U16_MAX PERL_USHORT_MAX
#define U16_MIN PERL_USHORT_MIN

#if BYTEORDER > 0x4321
  typedef int		I32;
  typedef unsigned int	U32;
# define I32_MAX PERL_INT_MAX
# define I32_MIN PERL_INT_MIN
# define U32_MAX PERL_UINT_MAX
# define U32_MIN PERL_UINT_MIN
#else
  typedef long		I32;
  typedef unsigned long	U32;
# define I32_MAX PERL_LONG_MAX
# define I32_MIN PERL_LONG_MIN
# define U32_MAX PERL_ULONG_MAX
# define U32_MIN PERL_ULONG_MIN
#endif

#define Ctl(ch) (ch & 037)

#define strNE(s1,s2) (strcmp(s1,s2))
#define strEQ(s1,s2) (!strcmp(s1,s2))
#define strLT(s1,s2) (strcmp(s1,s2) < 0)
#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
#define strGT(s1,s2) (strcmp(s1,s2) > 0)
#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))

#ifdef HAS_SETLOCALE  /* XXX Is there a better test for this? */
#  ifndef CTYPE256
#    define CTYPE256
#  endif
#endif

#ifdef USE_NEXT_CTYPE 
#define isALNUM(c)   (NXIsAlpha((unsigned int)c) || NXIsDigit((unsigned int)c) || c == '_')
#define isIDFIRST(c) (NXIsAlpha((unsigned int)c) || c == '_')
#define isALPHA(c)   NXIsAlpha((unsigned int)c)
#define isSPACE(c)   NXIsSpace((unsigned int)c)
#define isDIGIT(c)   NXIsDigit((unsigned int)c)
#define isUPPER(c)   NXIsUpper((unsigned int)c)
#define isLOWER(c)   NXIsLower((unsigned int)c)
#define toUPPER(c)   NXToUpper((unsigned int)c)
#define toLOWER(c)   NXToLower((unsigned int)c)
#else /* USE_NEXT_CTYPE */
#if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
#define isALNUM(c)   (isalpha((unsigned char)(c)) || isdigit((unsigned char)(c)) || c == '_')
#define isIDFIRST(c) (isalpha((unsigned char)(c)) || (c) == '_')
#define isALPHA(c)   isalpha((unsigned char)(c))
#define isSPACE(c)   isspace((unsigned char)(c))
#define isDIGIT(c)   isdigit((unsigned char)(c))
#define isUPPER(c)   isupper((unsigned char)(c))
#define isLOWER(c)   islower((unsigned char)(c))
#define toUPPER(c)   toupper((unsigned char)(c))
#define toLOWER(c)   tolower((unsigned char)(c))
#else
#define isALNUM(c)   (isascii(c) && (isalpha(c) || isdigit(c) || c == '_'))
#define isIDFIRST(c) (isascii(c) && (isalpha(c) || (c) == '_'))
#define isALPHA(c)   (isascii(c) && isalpha(c))
#define isSPACE(c)   (isascii(c) && isspace(c))
#define isDIGIT(c)   (isascii(c) && isdigit(c))
#define isUPPER(c)   (isascii(c) && isupper(c))
#define isLOWER(c)   (isascii(c) && islower(c))
#define toUPPER(c)   toupper(c)
#define toLOWER(c)   tolower(c)
#endif
#endif /* USE_NEXT_CTYPE */

/* Line numbers are unsigned, 16 bits. */
typedef U16 line_t;
#ifdef lint
#define NOLINE ((line_t)0)
#else
#define NOLINE ((line_t) 65535)
#endif

/* XXX LEAKTEST doesn't really work in perl5.  There are direct calls to
   safemalloc() in the source, so LEAKTEST won't pick them up.
   Further, if you try LEAKTEST, you'll also end up calling
   Safefree, which might call safexfree() on some things that weren't
   malloced with safexmalloc.  The correct "fix" to this, if anyone
   is interested, is to ensure that all calls go through the New and
   Renew macros.
	--Andy Dougherty		August 1996
*/

#ifndef lint
#ifndef LEAKTEST

#define New(x,v,n,t)  (v = (t*)safemalloc((MEM_SIZE)((n) * sizeof(t))))
#define Newc(x,v,n,t,c)  (v = (c*)safemalloc((MEM_SIZE)((n) * sizeof(t))))
#define Newz(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n) * sizeof(t)))), \
    memzero((char*)(v), (n) * sizeof(t))
#define Renew(v,n,t) (v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
#define Renewc(v,n,t,c) (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
#define Safefree(d) safefree((Malloc_t)(d))
#define NEWSV(x,len) newSV(len)

#else /* LEAKTEST */

#define New(x,v,n,t)  (v = (t*)safexmalloc(x,(MEM_SIZE)((n) * sizeof(t))))
#define Newc(x,v,n,t,c)  (v = (c*)safexmalloc(x,(MEM_SIZE)((n) * sizeof(t))))
#define Newz(x,v,n,t) (v = (t*)safexmalloc(x,(MEM_SIZE)((n) * sizeof(t)))), \
    memzero((char*)(v), (n) * sizeof(t))
#define Renew(v,n,t) (v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
#define Renewc(v,n,t,c) (v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
#define Safefree(d) safexfree((Malloc_t)d)
#define NEWSV(x,len) newSV(x,len)
#define MAXXCOUNT 1200
long xcount[MAXXCOUNT];
long lastxcount[MAXXCOUNT];

#endif /* LEAKTEST */

#define Move(s,d,n,t) (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
#define Copy(s,d,n,t) (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
#define Zero(d,n,t) (void)memzero((char*)(d), (n) * sizeof(t))

#else /* lint */

#define New(x,v,n,s) (v = Null(s *))
#define Newc(x,v,n,s,c) (v = Null(s *))
#define Newz(x,v,n,s) (v = Null(s *))
#define Renew(v,n,s) (v = Null(s *))
#define Move(s,d,n,t)
#define Copy(s,d,n,t)
#define Zero(d,n,t)
#define Safefree(d) d = d

#endif /* lint */

#ifdef USE_STRUCT_COPY
#define StructCopy(s,d,t) *((t*)(d)) = *((t*)(s))
#else
#define StructCopy(s,d,t) Copy(s,d,1,t)
#endif