339 lines
10 KiB
C
339 lines
10 KiB
C
/* handy.h
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*
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* Copyright (c) 1991-1997, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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#if !defined(__STDC__)
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#ifdef NULL
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#undef NULL
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#endif
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#ifndef I286
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# define NULL 0
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#else
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# define NULL 0L
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#endif
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#endif
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#define Null(type) ((type)NULL)
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#define Nullch Null(char*)
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#define Nullfp Null(PerlIO*)
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#define Nullsv Null(SV*)
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#ifdef TRUE
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#undef TRUE
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#endif
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#ifdef FALSE
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#undef FALSE
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#endif
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#define TRUE (1)
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#define FALSE (0)
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/* XXX Configure ought to have a test for a boolean type, if I can
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just figure out all the headers such a test needs.
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Andy Dougherty August 1996
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*/
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/* bool is built-in for g++-2.6.3, which might be used for an extension.
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If the extension includes <_G_config.h> before this file then
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_G_HAVE_BOOL will be properly set. If, however, the extension includes
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this file first, then you will have to manually set -DHAS_BOOL in
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your command line to avoid a conflict.
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*/
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#ifdef _G_HAVE_BOOL
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# if _G_HAVE_BOOL
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# ifndef HAS_BOOL
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# define HAS_BOOL 1
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# endif
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# endif
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#endif
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/* The NeXT dynamic loader headers will not build with the bool macro
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So declare them now to clear confusion.
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*/
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#ifdef NeXT
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# undef FALSE
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# undef TRUE
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typedef enum bool { FALSE = 0, TRUE = 1 } bool;
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# define ENUM_BOOL 1
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# ifndef HAS_BOOL
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# define HAS_BOOL 1
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# endif /* !HAS_BOOL */
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#endif /* NeXT */
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#ifndef HAS_BOOL
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# if defined(UTS) || defined(VMS)
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# define bool int
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# else
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# define bool char
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# endif
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#endif
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/* XXX A note on the perl source internal type system. The
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original intent was that I32 be *exactly* 32 bits.
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Currently, we only guarantee that I32 is *at least* 32 bits.
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Specifically, if int is 64 bits, then so is I32. (This is the case
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for the Cray.) This has the advantage of meshing nicely with
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standard library calls (where we pass an I32 and the library is
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expecting an int), but the disadvantage that an I32 is not 32 bits.
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Andy Dougherty August 1996
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There is no guarantee that there is *any* integral type with
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exactly 32 bits. It is perfectly legal for a system to have
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sizeof(short) == sizeof(int) == sizeof(long) == 8.
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Similarly, there is no guarantee that I16 and U16 have exactly 16
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bits.
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For dealing with issues that may arise from various 32/64-bit
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systems, we will ask Configure to check out
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SHORTSIZE == sizeof(short)
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INTSIZE == sizeof(int)
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LONGSIZE == sizeof(long)
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LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
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PTRSIZE == sizeof(void *)
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DOUBLESIZE == sizeof(double)
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LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
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Most of these are currently unused, but they are mentioned here so
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metaconfig will include the appropriate tests in Configure and
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we can then start to consider how best to deal with long long
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variables.
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Andy Dougherty April 1998
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*/
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typedef char I8;
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typedef unsigned char U8;
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/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
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Please search CHAR_MAX in perl.h for further details. */
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#define U8_MAX PERL_UCHAR_MAX
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#define U8_MIN PERL_UCHAR_MIN
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typedef short I16;
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typedef unsigned short U16;
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#define I16_MAX PERL_SHORT_MAX
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#define I16_MIN PERL_SHORT_MIN
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#define U16_MAX PERL_USHORT_MAX
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#define U16_MIN PERL_USHORT_MIN
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#if LONGSIZE > 4
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typedef int I32;
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typedef unsigned int U32;
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# define I32_MAX PERL_INT_MAX
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# define I32_MIN PERL_INT_MIN
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# define U32_MAX PERL_UINT_MAX
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# define U32_MIN PERL_UINT_MIN
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#else
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typedef long I32;
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typedef unsigned long U32;
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# define I32_MAX PERL_LONG_MAX
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# define I32_MIN PERL_LONG_MIN
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# define U32_MAX PERL_ULONG_MAX
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# define U32_MIN PERL_ULONG_MIN
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#endif
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#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */
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#define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8)
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#define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */
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#define Ctl(ch) ((ch) & 037)
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#define strNE(s1,s2) (strcmp(s1,s2))
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#define strEQ(s1,s2) (!strcmp(s1,s2))
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#define strLT(s1,s2) (strcmp(s1,s2) < 0)
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#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
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#define strGT(s1,s2) (strcmp(s1,s2) > 0)
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#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
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#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
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#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
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#ifdef HAS_MEMCMP
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# define memNE(s1,s2,l) (memcmp(s1,s2,l))
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# define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
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#else
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# define memNE(s1,s2,l) (bcmp(s1,s2,l))
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# define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
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#endif
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/*
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* Character classes.
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*
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* Unfortunately, the introduction of locales means that we
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* can't trust isupper(), etc. to tell the truth. And when
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* it comes to /\w+/ with tainting enabled, we *must* be able
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* to trust our character classes.
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*
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* Therefore, the default tests in the text of Perl will be
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* independent of locale. Any code that wants to depend on
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* the current locale will use the tests that begin with "lc".
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*/
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#ifdef HAS_SETLOCALE /* XXX Is there a better test for this? */
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# ifndef CTYPE256
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# define CTYPE256
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# endif
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#endif
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#define isALNUM(c) (isALPHA(c) || isDIGIT(c) || (c) == '_')
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#define isIDFIRST(c) (isALPHA(c) || (c) == '_')
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#define isALPHA(c) (isUPPER(c) || isLOWER(c))
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#define isSPACE(c) \
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((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) =='\r' || (c) == '\f')
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#define isDIGIT(c) ((c) >= '0' && (c) <= '9')
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#ifdef EBCDIC
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/* In EBCDIC we do not do locales: therefore() isupper() is fine. */
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# define isUPPER(c) isupper(c)
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# define isLOWER(c) islower(c)
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# define isPRINT(c) isprint(c)
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# define toUPPER(c) toupper(c)
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# define toLOWER(c) tolower(c)
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#else
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# define isUPPER(c) ((c) >= 'A' && (c) <= 'Z')
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# define isLOWER(c) ((c) >= 'a' && (c) <= 'z')
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# define isPRINT(c) (((c) > 32 && (c) < 127) || isSPACE(c))
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# define toUPPER(c) (isLOWER(c) ? (c) - ('a' - 'A') : (c))
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# define toLOWER(c) (isUPPER(c) ? (c) + ('a' - 'A') : (c))
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#endif
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#ifdef USE_NEXT_CTYPE
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# define isALNUM_LC(c) \
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(NXIsAlpha((unsigned int)(c)) || NXIsDigit((unsigned int)(c)) || \
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(char)(c) == '_')
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# define isIDFIRST_LC(c) \
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(NXIsAlpha((unsigned int)(c)) || (char)(c) == '_')
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# define isALPHA_LC(c) NXIsAlpha((unsigned int)(c))
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# define isSPACE_LC(c) NXIsSpace((unsigned int)(c))
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# define isDIGIT_LC(c) NXIsDigit((unsigned int)(c))
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# define isUPPER_LC(c) NXIsUpper((unsigned int)(c))
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# define isLOWER_LC(c) NXIsLower((unsigned int)(c))
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# define isPRINT_LC(c) NXIsPrint((unsigned int)(c))
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# define toUPPER_LC(c) NXToUpper((unsigned int)(c))
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# define toLOWER_LC(c) NXToLower((unsigned int)(c))
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#else /* !USE_NEXT_CTYPE */
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# if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
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# define isALNUM_LC(c) \
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(isalpha((unsigned char)(c)) || \
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isdigit((unsigned char)(c)) || (char)(c) == '_')
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# define isIDFIRST_LC(c) (isalpha((unsigned char)(c)) || (char)(c) == '_')
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# define isALPHA_LC(c) isalpha((unsigned char)(c))
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# define isSPACE_LC(c) isspace((unsigned char)(c))
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# define isDIGIT_LC(c) isdigit((unsigned char)(c))
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# define isUPPER_LC(c) isupper((unsigned char)(c))
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# define isLOWER_LC(c) islower((unsigned char)(c))
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# define isPRINT_LC(c) isprint((unsigned char)(c))
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# define toUPPER_LC(c) toupper((unsigned char)(c))
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# define toLOWER_LC(c) tolower((unsigned char)(c))
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# else
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# define isALNUM_LC(c) \
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(isascii(c) && (isalpha(c) || isdigit(c) || (c) == '_'))
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# define isIDFIRST_LC(c) (isascii(c) && (isalpha(c) || (c) == '_'))
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# define isALPHA_LC(c) (isascii(c) && isalpha(c))
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# define isSPACE_LC(c) (isascii(c) && isspace(c))
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# define isDIGIT_LC(c) (isascii(c) && isdigit(c))
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# define isUPPER_LC(c) (isascii(c) && isupper(c))
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# define isLOWER_LC(c) (isascii(c) && islower(c))
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# define isPRINT_LC(c) (isascii(c) && isprint(c))
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# define toUPPER_LC(c) toupper(c)
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# define toLOWER_LC(c) tolower(c)
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# endif
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#endif /* USE_NEXT_CTYPE */
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#ifdef EBCDIC
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EXT int ebcdic_control _((int));
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# define toCTRL(c) ebcdic_control(c)
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#else
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/* This conversion works both ways, strangely enough. */
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# define toCTRL(c) (toUPPER(c) ^ 64)
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#endif
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/* Line numbers are unsigned, 16 bits. */
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typedef U16 line_t;
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#ifdef lint
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#define NOLINE ((line_t)0)
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#else
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#define NOLINE ((line_t) 65535)
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#endif
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/* This looks obsolete (IZ):
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XXX LEAKTEST doesn't really work in perl5. There are direct calls to
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safemalloc() in the source, so LEAKTEST won't pick them up.
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Further, if you try LEAKTEST, you'll also end up calling
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Safefree, which might call safexfree() on some things that weren't
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malloced with safexmalloc. The correct "fix" to this, if anyone
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is interested, is to ensure that all calls go through the New and
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Renew macros.
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--Andy Dougherty August 1996
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*/
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#ifndef lint
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#define NEWSV(x,len) newSV(len)
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#ifndef LEAKTEST
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#define New(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
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#define Newc(x,v,n,t,c) (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
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#define Newz(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
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memzero((char*)(v), (n)*sizeof(t))
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#define Renew(v,n,t) \
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(v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
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#define Renewc(v,n,t,c) \
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(v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
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#define Safefree(d) safefree((Malloc_t)(d))
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#else /* LEAKTEST */
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#define New(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
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#define Newc(x,v,n,t,c) (v = (c*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
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#define Newz(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t)))), \
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memzero((char*)(v), (n)*sizeof(t))
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#define Renew(v,n,t) \
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(v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
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#define Renewc(v,n,t,c) \
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(v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
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#define Safefree(d) safexfree((Malloc_t)(d))
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#define MAXXCOUNT 1400
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#define MAXY_SIZE 80
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#define MAXYCOUNT 16 /* (MAXY_SIZE/4 + 1) */
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extern long xcount[MAXXCOUNT];
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extern long lastxcount[MAXXCOUNT];
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extern long xycount[MAXXCOUNT][MAXYCOUNT];
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extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
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#endif /* LEAKTEST */
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#define Move(s,d,n,t) (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
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#define Copy(s,d,n,t) (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
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#define Zero(d,n,t) (void)memzero((char*)(d), (n) * sizeof(t))
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#else /* lint */
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#define New(x,v,n,s) (v = Null(s *))
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#define Newc(x,v,n,s,c) (v = Null(s *))
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#define Newz(x,v,n,s) (v = Null(s *))
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#define Renew(v,n,s) (v = Null(s *))
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#define Move(s,d,n,t)
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#define Copy(s,d,n,t)
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#define Zero(d,n,t)
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#define Safefree(d) (d) = (d)
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#endif /* lint */
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#ifdef USE_STRUCT_COPY
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#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
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#else
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#define StructCopy(s,d,t) Copy(s,d,1,t)
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#endif
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