source: trunk/third/perl/handy.h @ 20075

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1/*    handy.h
2 *
3 *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
4 *    2000, 2001, 2002, by Larry Wall and others
5 *
6 *    You may distribute under the terms of either the GNU General Public
7 *    License or the Artistic License, as specified in the README file.
8 *
9 */
10
11#if !defined(__STDC__)
12#ifdef NULL
13#undef NULL
14#endif
15#ifndef I286
16#  define NULL 0
17#else
18#  define NULL 0L
19#endif
20#endif
21
22#define Null(type) ((type)NULL)
23
24/*
25=head1 Handy Values
26
27=for apidoc AmU||Nullch
28Null character pointer.
29
30=for apidoc AmU||Nullsv
31Null SV pointer.
32
33=cut
34*/
35
36#define Nullch Null(char*)
37#define Nullfp Null(PerlIO*)
38#define Nullsv Null(SV*)
39
40#ifdef TRUE
41#undef TRUE
42#endif
43#ifdef FALSE
44#undef FALSE
45#endif
46#define TRUE (1)
47#define FALSE (0)
48
49
50/* XXX Configure ought to have a test for a boolean type, if I can
51   just figure out all the headers such a test needs.
52   Andy Dougherty       August 1996
53*/
54/* bool is built-in for g++-2.6.3 and later, which might be used
55   for extensions.  <_G_config.h> defines _G_HAVE_BOOL, but we can't
56   be sure _G_config.h will be included before this file.  _G_config.h
57   also defines _G_HAVE_BOOL for both gcc and g++, but only g++
58   actually has bool.  Hence, _G_HAVE_BOOL is pretty useless for us.
59   g++ can be identified by __GNUG__.
60   Andy Dougherty       February 2000
61*/
62#ifdef __GNUG__         /* GNU g++ has bool built-in */
63#  ifndef HAS_BOOL
64#    define HAS_BOOL 1
65#  endif
66#endif
67
68/* The NeXT dynamic loader headers will not build with the bool macro
69   So declare them now to clear confusion.
70*/
71#if defined(NeXT) || defined(__NeXT__)
72# undef FALSE
73# undef TRUE
74  typedef enum bool { FALSE = 0, TRUE = 1 } bool;
75# define ENUM_BOOL 1
76# ifndef HAS_BOOL
77#  define HAS_BOOL 1
78# endif /* !HAS_BOOL */
79#endif /* NeXT || __NeXT__ */
80
81#ifndef HAS_BOOL
82# if defined(UTS) || defined(VMS)
83#  define bool int
84# else
85#  define bool char
86# endif
87# define HAS_BOOL 1
88#endif
89
90/* XXX A note on the perl source internal type system.  The
91   original intent was that I32 be *exactly* 32 bits.
92
93   Currently, we only guarantee that I32 is *at least* 32 bits.
94   Specifically, if int is 64 bits, then so is I32.  (This is the case
95   for the Cray.)  This has the advantage of meshing nicely with
96   standard library calls (where we pass an I32 and the library is
97   expecting an int), but the disadvantage that an I32 is not 32 bits.
98   Andy Dougherty       August 1996
99
100   There is no guarantee that there is *any* integral type with
101   exactly 32 bits.  It is perfectly legal for a system to have
102   sizeof(short) == sizeof(int) == sizeof(long) == 8.
103
104   Similarly, there is no guarantee that I16 and U16 have exactly 16
105   bits.
106
107   For dealing with issues that may arise from various 32/64-bit
108   systems, we will ask Configure to check out
109
110        SHORTSIZE == sizeof(short)
111        INTSIZE == sizeof(int)
112        LONGSIZE == sizeof(long)
113        LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
114        PTRSIZE == sizeof(void *)
115        DOUBLESIZE == sizeof(double)
116        LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
117
118*/
119
120#ifdef I_INTTYPES /* e.g. Linux has int64_t without <inttypes.h> */
121#   include <inttypes.h>
122#   ifdef INT32_MIN_BROKEN
123#       undef  INT32_MIN
124#       define INT32_MIN (-2147483647-1)
125#   endif
126#   ifdef INT64_MIN_BROKEN
127#       undef  INT64_MIN
128#       define INT64_MIN (-9223372036854775807LL-1)
129#   endif
130#endif
131
132typedef I8TYPE I8;
133typedef U8TYPE U8;
134typedef I16TYPE I16;
135typedef U16TYPE U16;
136typedef I32TYPE I32;
137typedef U32TYPE U32;
138#ifdef PERL_CORE
139#   ifdef HAS_QUAD
140typedef I64TYPE I64;
141typedef U64TYPE U64;
142#   endif
143#endif /* PERL_CORE */
144
145#if defined(HAS_QUAD) && defined(USE_64_BIT_INT)
146#   ifndef UINT64_C /* usually from <inttypes.h> */
147#       if defined(HAS_LONG_LONG) && QUADKIND == QUAD_IS_LONG_LONG
148#           define INT64_C(c)   CAT2(c,LL)
149#           define UINT64_C(c)  CAT2(c,ULL)
150#       else
151#           if LONGSIZE == 8 && QUADKIND == QUAD_IS_LONG
152#               define INT64_C(c)       CAT2(c,L)
153#               define UINT64_C(c)      CAT2(c,UL)
154#           else
155#               define INT64_C(c)       ((I64TYPE)(c))
156#               define UINT64_C(c)      ((U64TYPE)(c))
157#           endif
158#       endif
159#   endif
160#endif
161
162/* Mention I8SIZE, U8SIZE, I16SIZE, U16SIZE, I32SIZE, U32SIZE,
163   I64SIZE, and U64SIZE here so that metaconfig pulls them in. */
164
165#if defined(UINT8_MAX) && defined(INT16_MAX) && defined(INT32_MAX)
166
167/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
168   Please search CHAR_MAX in perl.h for further details. */
169#define U8_MAX UINT8_MAX
170#define U8_MIN UINT8_MIN
171
172#define I16_MAX INT16_MAX
173#define I16_MIN INT16_MIN
174#define U16_MAX UINT16_MAX
175#define U16_MIN UINT16_MIN
176
177#define I32_MAX INT32_MAX
178#define I32_MIN INT32_MIN
179#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
180#  define U32_MAX UINT32_MAX
181#else
182#  define U32_MAX 4294967295U
183#endif
184#define U32_MIN UINT32_MIN
185
186#else
187
188/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
189   Please search CHAR_MAX in perl.h for further details. */
190#define U8_MAX PERL_UCHAR_MAX
191#define U8_MIN PERL_UCHAR_MIN
192
193#define I16_MAX PERL_SHORT_MAX
194#define I16_MIN PERL_SHORT_MIN
195#define U16_MAX PERL_USHORT_MAX
196#define U16_MIN PERL_USHORT_MIN
197
198#if LONGSIZE > 4
199# define I32_MAX PERL_INT_MAX
200# define I32_MIN PERL_INT_MIN
201# define U32_MAX PERL_UINT_MAX
202# define U32_MIN PERL_UINT_MIN
203#else
204# define I32_MAX PERL_LONG_MAX
205# define I32_MIN PERL_LONG_MIN
206# define U32_MAX PERL_ULONG_MAX
207# define U32_MIN PERL_ULONG_MIN
208#endif
209
210#endif
211
212/* log(2) is pretty close to  0.30103, just in case anyone is grepping for it */
213#define BIT_DIGITS(N)   (((N)*146)/485 + 1)  /* log2(10) =~ 146/485 */
214#define TYPE_DIGITS(T)  BIT_DIGITS(sizeof(T) * 8)
215#define TYPE_CHARS(T)   (TYPE_DIGITS(T) + 2) /* sign, NUL */
216
217#define Ctl(ch) ((ch) & 037)
218
219/*
220=head1 Miscellaneous Functions
221
222=for apidoc Am|bool|strNE|char* s1|char* s2
223Test two strings to see if they are different.  Returns true or
224false.
225
226=for apidoc Am|bool|strEQ|char* s1|char* s2
227Test two strings to see if they are equal.  Returns true or false.
228
229=for apidoc Am|bool|strLT|char* s1|char* s2
230Test two strings to see if the first, C<s1>, is less than the second,
231C<s2>.  Returns true or false.
232
233=for apidoc Am|bool|strLE|char* s1|char* s2
234Test two strings to see if the first, C<s1>, is less than or equal to the
235second, C<s2>.  Returns true or false.
236
237=for apidoc Am|bool|strGT|char* s1|char* s2
238Test two strings to see if the first, C<s1>, is greater than the second,
239C<s2>.  Returns true or false.
240
241=for apidoc Am|bool|strGE|char* s1|char* s2
242Test two strings to see if the first, C<s1>, is greater than or equal to
243the second, C<s2>.  Returns true or false.
244
245=for apidoc Am|bool|strnNE|char* s1|char* s2|STRLEN len
246Test two strings to see if they are different.  The C<len> parameter
247indicates the number of bytes to compare.  Returns true or false. (A
248wrapper for C<strncmp>).
249
250=for apidoc Am|bool|strnEQ|char* s1|char* s2|STRLEN len
251Test two strings to see if they are equal.  The C<len> parameter indicates
252the number of bytes to compare.  Returns true or false. (A wrapper for
253C<strncmp>).
254
255=cut
256*/
257
258#define strNE(s1,s2) (strcmp(s1,s2))
259#define strEQ(s1,s2) (!strcmp(s1,s2))
260#define strLT(s1,s2) (strcmp(s1,s2) < 0)
261#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
262#define strGT(s1,s2) (strcmp(s1,s2) > 0)
263#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
264#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
265#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
266
267#ifdef HAS_MEMCMP
268#  define memNE(s1,s2,l) (memcmp(s1,s2,l))
269#  define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
270#else
271#  define memNE(s1,s2,l) (bcmp(s1,s2,l))
272#  define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
273#endif
274
275/*
276 * Character classes.
277 *
278 * Unfortunately, the introduction of locales means that we
279 * can't trust isupper(), etc. to tell the truth.  And when
280 * it comes to /\w+/ with tainting enabled, we *must* be able
281 * to trust our character classes.
282 *
283 * Therefore, the default tests in the text of Perl will be
284 * independent of locale.  Any code that wants to depend on
285 * the current locale will use the tests that begin with "lc".
286 */
287
288#ifdef HAS_SETLOCALE  /* XXX Is there a better test for this? */
289#  ifndef CTYPE256
290#    define CTYPE256
291#  endif
292#endif
293
294/*
295
296=head1 Character classes
297
298=for apidoc Am|bool|isALNUM|char ch
299Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric
300character (including underscore) or digit.
301
302=for apidoc Am|bool|isALPHA|char ch
303Returns a boolean indicating whether the C C<char> is an ASCII alphabetic
304character.
305
306=for apidoc Am|bool|isSPACE|char ch
307Returns a boolean indicating whether the C C<char> is whitespace.
308
309=for apidoc Am|bool|isDIGIT|char ch
310Returns a boolean indicating whether the C C<char> is an ASCII
311digit.
312
313=for apidoc Am|bool|isUPPER|char ch
314Returns a boolean indicating whether the C C<char> is an uppercase
315character.
316
317=for apidoc Am|bool|isLOWER|char ch
318Returns a boolean indicating whether the C C<char> is a lowercase
319character.
320
321=for apidoc Am|char|toUPPER|char ch
322Converts the specified character to uppercase.
323
324=for apidoc Am|char|toLOWER|char ch
325Converts the specified character to lowercase.
326
327=cut
328*/
329
330#define isALNUM(c)      (isALPHA(c) || isDIGIT(c) || (c) == '_')
331#define isIDFIRST(c)    (isALPHA(c) || (c) == '_')
332#define isALPHA(c)      (isUPPER(c) || isLOWER(c))
333#define isSPACE(c) \
334        ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) =='\r' || (c) == '\f')
335#define isPSXSPC(c)     (isSPACE(c) || (c) == '\v')
336#define isBLANK(c)      ((c) == ' ' || (c) == '\t')
337#define isDIGIT(c)      ((c) >= '0' && (c) <= '9')
338#ifdef EBCDIC
339    /* In EBCDIC we do not do locales: therefore() isupper() is fine. */
340#   define isUPPER(c)   isupper(c)
341#   define isLOWER(c)   islower(c)
342#   define isALNUMC(c)  isalnum(c)
343#   define isASCII(c)   isascii(c)
344#   define isCNTRL(c)   iscntrl(c)
345#   define isGRAPH(c)   isgraph(c)
346#   define isPRINT(c)   isprint(c)
347#   define isPUNCT(c)   ispunct(c)
348#   define isXDIGIT(c)  isxdigit(c)
349#   define toUPPER(c)   toupper(c)
350#   define toLOWER(c)   tolower(c)
351#else
352#   define isUPPER(c)   ((c) >= 'A' && (c) <= 'Z')
353#   define isLOWER(c)   ((c) >= 'a' && (c) <= 'z')
354#   define isALNUMC(c)  (isALPHA(c) || isDIGIT(c))
355#   define isASCII(c)   ((c) <= 127)
356#   define isCNTRL(c)   ((c) < ' ' || (c) == 127)
357#   define isGRAPH(c)   (isALNUM(c) || isPUNCT(c))
358#   define isPRINT(c)   (((c) > 32 && (c) < 127) || (c) == ' ')
359#   define isPUNCT(c)   (((c) >= 33 && (c) <= 47) || ((c) >= 58 && (c) <= 64)  || ((c) >= 91 && (c) <= 96) || ((c) >= 123 && (c) <= 126))
360#   define isXDIGIT(c)  (isdigit(c) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
361#   define toUPPER(c)   (isLOWER(c) ? (c) - ('a' - 'A') : (c))
362#   define toLOWER(c)   (isUPPER(c) ? (c) + ('a' - 'A') : (c))
363#endif
364
365#ifdef USE_NEXT_CTYPE
366
367#  define isALNUM_LC(c) \
368        (NXIsAlNum((unsigned int)(c)) || (char)(c) == '_')
369#  define isIDFIRST_LC(c) \
370        (NXIsAlpha((unsigned int)(c)) || (char)(c) == '_')
371#  define isALPHA_LC(c)         NXIsAlpha((unsigned int)(c))
372#  define isSPACE_LC(c)         NXIsSpace((unsigned int)(c))
373#  define isDIGIT_LC(c)         NXIsDigit((unsigned int)(c))
374#  define isUPPER_LC(c)         NXIsUpper((unsigned int)(c))
375#  define isLOWER_LC(c)         NXIsLower((unsigned int)(c))
376#  define isALNUMC_LC(c)        NXIsAlNum((unsigned int)(c))
377#  define isCNTRL_LC(c)         NXIsCntrl((unsigned int)(c))
378#  define isGRAPH_LC(c)         NXIsGraph((unsigned int)(c))
379#  define isPRINT_LC(c)         NXIsPrint((unsigned int)(c))
380#  define isPUNCT_LC(c)         NXIsPunct((unsigned int)(c))
381#  define toUPPER_LC(c)         NXToUpper((unsigned int)(c))
382#  define toLOWER_LC(c)         NXToLower((unsigned int)(c))
383
384#else /* !USE_NEXT_CTYPE */
385
386#  if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
387
388#    define isALNUM_LC(c)   (isalnum((unsigned char)(c)) || (char)(c) == '_')
389#    define isIDFIRST_LC(c) (isalpha((unsigned char)(c)) || (char)(c) == '_')
390#    define isALPHA_LC(c)       isalpha((unsigned char)(c))
391#    define isSPACE_LC(c)       isspace((unsigned char)(c))
392#    define isDIGIT_LC(c)       isdigit((unsigned char)(c))
393#    define isUPPER_LC(c)       isupper((unsigned char)(c))
394#    define isLOWER_LC(c)       islower((unsigned char)(c))
395#    define isALNUMC_LC(c)      isalnum((unsigned char)(c))
396#    define isCNTRL_LC(c)       iscntrl((unsigned char)(c))
397#    define isGRAPH_LC(c)       isgraph((unsigned char)(c))
398#    define isPRINT_LC(c)       isprint((unsigned char)(c))
399#    define isPUNCT_LC(c)       ispunct((unsigned char)(c))
400#    define toUPPER_LC(c)       toupper((unsigned char)(c))
401#    define toLOWER_LC(c)       tolower((unsigned char)(c))
402
403#  else
404
405#    define isALNUM_LC(c)       (isascii(c) && (isalnum(c) || (c) == '_'))
406#    define isIDFIRST_LC(c)     (isascii(c) && (isalpha(c) || (c) == '_'))
407#    define isALPHA_LC(c)       (isascii(c) && isalpha(c))
408#    define isSPACE_LC(c)       (isascii(c) && isspace(c))
409#    define isDIGIT_LC(c)       (isascii(c) && isdigit(c))
410#    define isUPPER_LC(c)       (isascii(c) && isupper(c))
411#    define isLOWER_LC(c)       (isascii(c) && islower(c))
412#    define isALNUMC_LC(c)      (isascii(c) && isalnum(c))
413#    define isCNTRL_LC(c)       (isascii(c) && iscntrl(c))
414#    define isGRAPH_LC(c)       (isascii(c) && isgraph(c))
415#    define isPRINT_LC(c)       (isascii(c) && isprint(c))
416#    define isPUNCT_LC(c)       (isascii(c) && ispunct(c))
417#    define toUPPER_LC(c)       toupper(c)
418#    define toLOWER_LC(c)       tolower(c)
419
420#  endif
421#endif /* USE_NEXT_CTYPE */
422
423#define isPSXSPC_LC(c)          (isSPACE_LC(c) || (c) == '\v')
424#define isBLANK_LC(c)           isBLANK(c) /* could be wrong */
425
426#define isALNUM_uni(c)          is_uni_alnum(c)
427#define isIDFIRST_uni(c)        is_uni_idfirst(c)
428#define isALPHA_uni(c)          is_uni_alpha(c)
429#define isSPACE_uni(c)          is_uni_space(c)
430#define isDIGIT_uni(c)          is_uni_digit(c)
431#define isUPPER_uni(c)          is_uni_upper(c)
432#define isLOWER_uni(c)          is_uni_lower(c)
433#define isALNUMC_uni(c)         is_uni_alnumc(c)
434#define isASCII_uni(c)          is_uni_ascii(c)
435#define isCNTRL_uni(c)          is_uni_cntrl(c)
436#define isGRAPH_uni(c)          is_uni_graph(c)
437#define isPRINT_uni(c)          is_uni_print(c)
438#define isPUNCT_uni(c)          is_uni_punct(c)
439#define isXDIGIT_uni(c)         is_uni_xdigit(c)
440#define toUPPER_uni(c,s,l)      to_uni_upper(c,s,l)
441#define toTITLE_uni(c,s,l)      to_uni_title(c,s,l)
442#define toLOWER_uni(c,s,l)      to_uni_lower(c,s,l)
443#define toFOLD_uni(c,s,l)       to_uni_fold(c,s,l)
444
445#define isPSXSPC_uni(c)         (isSPACE_uni(c) ||(c) == '\f')
446#define isBLANK_uni(c)          isBLANK(c) /* could be wrong */
447
448#define isALNUM_LC_uvchr(c)     (c < 256 ? isALNUM_LC(c) : is_uni_alnum_lc(c))
449#define isIDFIRST_LC_uvchr(c)   (c < 256 ? isIDFIRST_LC(c) : is_uni_idfirst_lc(c))
450#define isALPHA_LC_uvchr(c)     (c < 256 ? isALPHA_LC(c) : is_uni_alpha_lc(c))
451#define isSPACE_LC_uvchr(c)     (c < 256 ? isSPACE_LC(c) : is_uni_space_lc(c))
452#define isDIGIT_LC_uvchr(c)     (c < 256 ? isDIGIT_LC(c) : is_uni_digit_lc(c))
453#define isUPPER_LC_uvchr(c)     (c < 256 ? isUPPER_LC(c) : is_uni_upper_lc(c))
454#define isLOWER_LC_uvchr(c)     (c < 256 ? isLOWER_LC(c) : is_uni_lower_lc(c))
455#define isALNUMC_LC_uvchr(c)    (c < 256 ? isALNUMC_LC(c) : is_uni_alnumc_lc(c))
456#define isCNTRL_LC_uvchr(c)     (c < 256 ? isCNTRL_LC(c) : is_uni_cntrl_lc(c))
457#define isGRAPH_LC_uvchr(c)     (c < 256 ? isGRAPH_LC(c) : is_uni_graph_lc(c))
458#define isPRINT_LC_uvchr(c)     (c < 256 ? isPRINT_LC(c) : is_uni_print_lc(c))
459#define isPUNCT_LC_uvchr(c)     (c < 256 ? isPUNCT_LC(c) : is_uni_punct_lc(c))
460
461#define isPSXSPC_LC_uni(c)      (isSPACE_LC_uni(c) ||(c) == '\f')
462#define isBLANK_LC_uni(c)       isBLANK(c) /* could be wrong */
463
464#define isALNUM_utf8(p)         is_utf8_alnum(p)
465/* The ID_Start of Unicode is quite limiting: it assumes a L-class
466 * character (meaning that you cannot have, say, a CJK character).
467 * Instead, let's allow ID_Continue but not digits. */
468#define isIDFIRST_utf8(p)       (is_utf8_idcont(p) && !is_utf8_digit(p))
469#define isALPHA_utf8(p)         is_utf8_alpha(p)
470#define isSPACE_utf8(p)         is_utf8_space(p)
471#define isDIGIT_utf8(p)         is_utf8_digit(p)
472#define isUPPER_utf8(p)         is_utf8_upper(p)
473#define isLOWER_utf8(p)         is_utf8_lower(p)
474#define isALNUMC_utf8(p)        is_utf8_alnumc(p)
475#define isASCII_utf8(p)         is_utf8_ascii(p)
476#define isCNTRL_utf8(p)         is_utf8_cntrl(p)
477#define isGRAPH_utf8(p)         is_utf8_graph(p)
478#define isPRINT_utf8(p)         is_utf8_print(p)
479#define isPUNCT_utf8(p)         is_utf8_punct(p)
480#define isXDIGIT_utf8(p)        is_utf8_xdigit(p)
481#define toUPPER_utf8(p,s,l)     to_utf8_upper(p,s,l)
482#define toTITLE_utf8(p,s,l)     to_utf8_title(p,s,l)
483#define toLOWER_utf8(p,s,l)     to_utf8_lower(p,s,l)
484
485#define isPSXSPC_utf8(c)        (isSPACE_utf8(c) ||(c) == '\f')
486#define isBLANK_utf8(c)         isBLANK(c) /* could be wrong */
487
488#define isALNUM_LC_utf8(p)      isALNUM_LC_uvchr(utf8_to_uvchr(p,  0))
489#define isIDFIRST_LC_utf8(p)    isIDFIRST_LC_uvchr(utf8_to_uvchr(p,  0))
490#define isALPHA_LC_utf8(p)      isALPHA_LC_uvchr(utf8_to_uvchr(p,  0))
491#define isSPACE_LC_utf8(p)      isSPACE_LC_uvchr(utf8_to_uvchr(p,  0))
492#define isDIGIT_LC_utf8(p)      isDIGIT_LC_uvchr(utf8_to_uvchr(p,  0))
493#define isUPPER_LC_utf8(p)      isUPPER_LC_uvchr(utf8_to_uvchr(p,  0))
494#define isLOWER_LC_utf8(p)      isLOWER_LC_uvchr(utf8_to_uvchr(p,  0))
495#define isALNUMC_LC_utf8(p)     isALNUMC_LC_uvchr(utf8_to_uvchr(p,  0))
496#define isCNTRL_LC_utf8(p)      isCNTRL_LC_uvchr(utf8_to_uvchr(p,  0))
497#define isGRAPH_LC_utf8(p)      isGRAPH_LC_uvchr(utf8_to_uvchr(p,  0))
498#define isPRINT_LC_utf8(p)      isPRINT_LC_uvchr(utf8_to_uvchr(p,  0))
499#define isPUNCT_LC_utf8(p)      isPUNCT_LC_uvchr(utf8_to_uvchr(p,  0))
500
501#define isPSXSPC_LC_utf8(c)     (isSPACE_LC_utf8(c) ||(c) == '\f')
502#define isBLANK_LC_utf8(c)      isBLANK(c) /* could be wrong */
503
504#ifdef EBCDIC
505#  ifdef PERL_IMPLICIT_CONTEXT
506#    define toCTRL(c)     Perl_ebcdic_control(aTHX_ c)
507#  else
508#    define toCTRL        Perl_ebcdic_control
509#  endif
510#else
511  /* This conversion works both ways, strangely enough. */
512#  define toCTRL(c)    (toUPPER(c) ^ 64)
513#endif
514
515/* Line numbers are unsigned, 32 bits. */
516typedef U32 line_t;
517#ifdef lint
518#define NOLINE ((line_t)0)
519#else
520#define NOLINE ((line_t) 4294967295UL)
521#endif
522
523
524/*
525=head1 SV Manipulation Functions
526
527=for apidoc Am|SV*|NEWSV|int id|STRLEN len
528Creates a new SV.  A non-zero C<len> parameter indicates the number of
529bytes of preallocated string space the SV should have.  An extra byte for a
530tailing NUL is also reserved.  (SvPOK is not set for the SV even if string
531space is allocated.)  The reference count for the new SV is set to 1.
532C<id> is an integer id between 0 and 1299 (used to identify leaks).
533
534=head1 Memory Management
535
536=for apidoc Am|void|New|int id|void* ptr|int nitems|type
537The XSUB-writer's interface to the C C<malloc> function.
538
539=for apidoc Am|void|Newc|int id|void* ptr|int nitems|type|cast
540The XSUB-writer's interface to the C C<malloc> function, with
541cast.
542
543=for apidoc Am|void|Newz|int id|void* ptr|int nitems|type
544The XSUB-writer's interface to the C C<malloc> function.  The allocated
545memory is zeroed with C<memzero>.
546
547=for apidoc Am|void|Renew|void* ptr|int nitems|type
548The XSUB-writer's interface to the C C<realloc> function.
549
550=for apidoc Am|void|Renewc|void* ptr|int nitems|type|cast
551The XSUB-writer's interface to the C C<realloc> function, with
552cast.
553
554=for apidoc Am|void|Safefree|void* ptr
555The XSUB-writer's interface to the C C<free> function.
556
557=for apidoc Am|void|Move|void* src|void* dest|int nitems|type
558The XSUB-writer's interface to the C C<memmove> function.  The C<src> is the
559source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
560the type.  Can do overlapping moves.  See also C<Copy>.
561
562=for apidoc Am|void|Copy|void* src|void* dest|int nitems|type
563The XSUB-writer's interface to the C C<memcpy> function.  The C<src> is the
564source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
565the type.  May fail on overlapping copies.  See also C<Move>.
566
567=for apidoc Am|void|Zero|void* dest|int nitems|type
568
569The XSUB-writer's interface to the C C<memzero> function.  The C<dest> is the
570destination, C<nitems> is the number of items, and C<type> is the type.
571
572=for apidoc Am|void|StructCopy|type src|type dest|type
573This is an architecture-independent macro to copy one structure to another.
574
575=for apidoc Am|void|Poison|void* dest|int nitems|type
576
577Fill up memory with a pattern (byte 0xAB over and over again) that
578hopefully catches attempts to access uninitialized memory.
579
580=cut */
581
582#ifndef lint
583
584#define NEWSV(x,len)    newSV(len)
585
586#define New(x,v,n,t)    (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
587#define Newc(x,v,n,t,c) (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
588#define Newz(x,v,n,t)   (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
589                        memzero((char*)(v), (n)*sizeof(t))
590#define Renew(v,n,t) \
591          (v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
592#define Renewc(v,n,t,c) \
593          (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
594#define Safefree(d)     safefree((Malloc_t)(d))
595
596#define Move(s,d,n,t)   (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
597#define Copy(s,d,n,t)   (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
598#define Zero(d,n,t)     (void)memzero((char*)(d), (n) * sizeof(t))
599
600#define Poison(d,n,t)   (void)memset((char*)(d), 0xAB, (n) * sizeof(t))
601
602#else /* lint */
603
604#define New(x,v,n,s)    (v = Null(s *))
605#define Newc(x,v,n,s,c) (v = Null(s *))
606#define Newz(x,v,n,s)   (v = Null(s *))
607#define Renew(v,n,s)    (v = Null(s *))
608#define Move(s,d,n,t)
609#define Copy(s,d,n,t)
610#define Zero(d,n,t)
611#define Poison(d,n,t)
612#define Safefree(d)     (d) = (d)
613
614#endif /* lint */
615
616#ifdef USE_STRUCT_COPY
617#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
618#else
619#define StructCopy(s,d,t) Copy(s,d,1,t)
620#endif
621
622#define C_ARRAY_LENGTH(a)       (sizeof(a)/sizeof((a)[0]))
623
624#ifdef NEED_VA_COPY
625# ifdef va_copy
626#  define Perl_va_copy(s, d) va_copy(d, s)
627# else
628#  if defined(__va_copy)
629#   define Perl_va_copy(s, d) __va_copy(d, s)
630#  else
631#   define Perl_va_copy(s, d) Copy(s, d, 1, va_list)
632#  endif
633# endif
634#endif
635
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