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1/* handy.h
2 *
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000,
4 * 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2012 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/* IMPORTANT NOTE: Everything whose name begins with an underscore is for
12 * internal core Perl use only. */
13
14#ifndef HANDY_H /* Guard against nested #inclusion */
15#define HANDY_H
16
17#if !defined(__STDC__)
18#ifdef NULL
19#undef NULL
20#endif
21# define NULL 0
22#endif
23
24#ifndef PERL_CORE
25# define Null(type) ((type)NULL)
26
27/*
28=head1 Handy Values
29
30=for apidoc AmU||Nullch
31Null character pointer. (No longer available when C<PERL_CORE> is
32defined.)
33
34=for apidoc AmU||Nullsv
35Null SV pointer. (No longer available when C<PERL_CORE> is defined.)
36
37=cut
38*/
39
40# define Nullch Null(char*)
41# define Nullfp Null(PerlIO*)
42# define Nullsv Null(SV*)
43#endif
44
45#ifdef TRUE
46#undef TRUE
47#endif
48#ifdef FALSE
49#undef FALSE
50#endif
51#define TRUE (1)
52#define FALSE (0)
53
54/* The MUTABLE_*() macros cast pointers to the types shown, in such a way
55 * (compiler permitting) that casting away const-ness will give a warning;
56 * e.g.:
57 *
58 * const SV *sv = ...;
59 * AV *av1 = (AV*)sv; <== BAD: the const has been silently cast away
60 * AV *av2 = MUTABLE_AV(sv); <== GOOD: it may warn
61 */
62
63#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
64# define MUTABLE_PTR(p) ({ void *_p = (p); _p; })
65#else
66# define MUTABLE_PTR(p) ((void *) (p))
67#endif
68
69#define MUTABLE_AV(p) ((AV *)MUTABLE_PTR(p))
70#define MUTABLE_CV(p) ((CV *)MUTABLE_PTR(p))
71#define MUTABLE_GV(p) ((GV *)MUTABLE_PTR(p))
72#define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
73#define MUTABLE_IO(p) ((IO *)MUTABLE_PTR(p))
74#define MUTABLE_SV(p) ((SV *)MUTABLE_PTR(p))
75
76#if defined(I_STDBOOL) && !defined(PERL_BOOL_AS_CHAR)
77# include <stdbool.h>
78# ifndef HAS_BOOL
79# define HAS_BOOL 1
80# endif
81#endif
82
83/* bool is built-in for g++-2.6.3 and later, which might be used
84 for extensions. <_G_config.h> defines _G_HAVE_BOOL, but we can't
85 be sure _G_config.h will be included before this file. _G_config.h
86 also defines _G_HAVE_BOOL for both gcc and g++, but only g++
87 actually has bool. Hence, _G_HAVE_BOOL is pretty useless for us.
88 g++ can be identified by __GNUG__.
89 Andy Dougherty February 2000
90*/
91#ifdef __GNUG__ /* GNU g++ has bool built-in */
92# ifndef PERL_BOOL_AS_CHAR
93# ifndef HAS_BOOL
94# define HAS_BOOL 1
95# endif
96# endif
97#endif
98
99#ifndef HAS_BOOL
100# ifdef bool
101# undef bool
102# endif
103# define bool char
104# define HAS_BOOL 1
105#endif
106
107/* cast-to-bool. A simple (bool) cast may not do the right thing: if bool is
108 * defined as char for example, then the cast from int is
109 * implementation-defined (bool)!!(cbool) in a ternary triggers a bug in xlc on
110 * AIX */
111#define cBOOL(cbool) ((cbool) ? (bool)1 : (bool)0)
112
113/* Try to figure out __func__ or __FUNCTION__ equivalent, if any.
114 * XXX Should really be a Configure probe, with HAS__FUNCTION__
115 * and FUNCTION__ as results.
116 * XXX Similarly, a Configure probe for __FILE__ and __LINE__ is needed. */
117#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || (defined(__SUNPRO_C)) /* C99 or close enough. */
118# define FUNCTION__ __func__
119#else
120# if (defined(USING_MSVC6)) || /* MSVC6 has neither __func__ nor __FUNCTION and no good workarounds, either. */ \
121 (defined(__DECC_VER)) /* Tru64 or VMS, and strict C89 being used, but not modern enough cc (in Tur64, -c99 not known, only -std1). */
122# define FUNCTION__ ""
123# else
124# define FUNCTION__ __FUNCTION__ /* Common extension. */
125# endif
126#endif
127
128/* XXX A note on the perl source internal type system. The
129 original intent was that I32 be *exactly* 32 bits.
130
131 Currently, we only guarantee that I32 is *at least* 32 bits.
132 Specifically, if int is 64 bits, then so is I32. (This is the case
133 for the Cray.) This has the advantage of meshing nicely with
134 standard library calls (where we pass an I32 and the library is
135 expecting an int), but the disadvantage that an I32 is not 32 bits.
136 Andy Dougherty August 1996
137
138 There is no guarantee that there is *any* integral type with
139 exactly 32 bits. It is perfectly legal for a system to have
140 sizeof(short) == sizeof(int) == sizeof(long) == 8.
141
142 Similarly, there is no guarantee that I16 and U16 have exactly 16
143 bits.
144
145 For dealing with issues that may arise from various 32/64-bit
146 systems, we will ask Configure to check out
147
148 SHORTSIZE == sizeof(short)
149 INTSIZE == sizeof(int)
150 LONGSIZE == sizeof(long)
151 LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
152 PTRSIZE == sizeof(void *)
153 DOUBLESIZE == sizeof(double)
154 LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
155
156*/
157
158#ifdef I_INTTYPES /* e.g. Linux has int64_t without <inttypes.h> */
159# include <inttypes.h>
160# ifdef INT32_MIN_BROKEN
161# undef INT32_MIN
162# define INT32_MIN (-2147483647-1)
163# endif
164# ifdef INT64_MIN_BROKEN
165# undef INT64_MIN
166# define INT64_MIN (-9223372036854775807LL-1)
167# endif
168#endif
169
170typedef I8TYPE I8;
171typedef U8TYPE U8;
172typedef I16TYPE I16;
173typedef U16TYPE U16;
174typedef I32TYPE I32;
175typedef U32TYPE U32;
176#ifdef PERL_CORE
177# ifdef HAS_QUAD
178typedef I64TYPE I64;
179typedef U64TYPE U64;
180# endif
181#endif /* PERL_CORE */
182
183/* INT64_C/UINT64_C are C99 from <stdint.h> (so they will not be
184 * available in strict C89 mode), but they are nice, so let's define
185 * them if necessary. */
186#if defined(HAS_QUAD)
187# undef PeRl_INT64_C
188# undef PeRl_UINT64_C
189/* Prefer the native integer types (int and long) over long long
190 * (which is not C89) and Win32-specific __int64. */
191# if QUADKIND == QUAD_IS_INT && INTSIZE == 8
192# define PeRl_INT64_C(c) (c)
193# define PeRl_UINT64_C(c) CAT2(c,U)
194# endif
195# if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
196# define PeRl_INT64_C(c) CAT2(c,L)
197# define PeRl_UINT64_C(c) CAT2(c,UL)
198# endif
199# if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
200# define PeRl_INT64_C(c) CAT2(c,LL)
201# define PeRl_UINT64_C(c) CAT2(c,ULL)
202# endif
203# if QUADKIND == QUAD_IS___INT64
204# define PeRl_INT64_C(c) CAT2(c,I64)
205# define PeRl_UINT64_C(c) CAT2(c,UI64)
206# endif
207# ifndef PeRl_INT64_C
208# define PeRl_INT64_C(c) ((I64TYPE)(c)) /* last resort */
209# define PeRl_UINT64_C(c) ((U64TYPE)(c))
210# endif
211/* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
212 * not fly with C89-pedantic gcc, so let's undefine them first so that
213 * we can redefine them with our native integer preferring versions. */
214# if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
215# undef INT64_C
216# undef UINT64_C
217# endif
218# ifndef INT64_C
219# define INT64_C(c) PeRl_INT64_C(c)
220# endif
221# ifndef UINT64_C
222# define UINT64_C(c) PeRl_UINT64_C(c)
223# endif
224#endif
225
226#if defined(UINT8_MAX) && defined(INT16_MAX) && defined(INT32_MAX)
227
228/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
229 Please search CHAR_MAX in perl.h for further details. */
230#define U8_MAX UINT8_MAX
231#define U8_MIN UINT8_MIN
232
233#define I16_MAX INT16_MAX
234#define I16_MIN INT16_MIN
235#define U16_MAX UINT16_MAX
236#define U16_MIN UINT16_MIN
237
238#define I32_MAX INT32_MAX
239#define I32_MIN INT32_MIN
240#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
241# define U32_MAX UINT32_MAX
242#else
243# define U32_MAX 4294967295U
244#endif
245#define U32_MIN UINT32_MIN
246
247#else
248
249/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
250 Please search CHAR_MAX in perl.h for further details. */
251#define U8_MAX PERL_UCHAR_MAX
252#define U8_MIN PERL_UCHAR_MIN
253
254#define I16_MAX PERL_SHORT_MAX
255#define I16_MIN PERL_SHORT_MIN
256#define U16_MAX PERL_USHORT_MAX
257#define U16_MIN PERL_USHORT_MIN
258
259#if LONGSIZE > 4
260# define I32_MAX PERL_INT_MAX
261# define I32_MIN PERL_INT_MIN
262# define U32_MAX PERL_UINT_MAX
263# define U32_MIN PERL_UINT_MIN
264#else
265# define I32_MAX PERL_LONG_MAX
266# define I32_MIN PERL_LONG_MIN
267# define U32_MAX PERL_ULONG_MAX
268# define U32_MIN PERL_ULONG_MIN
269#endif
270
271#endif
272
273/* log(2) is pretty close to 0.30103, just in case anyone is grepping for it */
274#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */
275#define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8)
276#define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */
277
278#define Ctl(ch) ((ch) & 037)
279
280/* This is a helper macro to avoid preprocessor issues, replaced by nothing
281 * unless under DEBUGGING, where it expands to an assert of its argument,
282 * followed by a comma (hence the comma operator). If we just used a straight
283 * assert(), we would get a comma with nothing before it when not DEBUGGING */
284#ifdef DEBUGGING
285# define __ASSERT_(statement) assert(statement),
286#else
287# define __ASSERT_(statement)
288#endif
289
290/*
291=head1 SV-Body Allocation
292
293=for apidoc Ama|SV*|newSVpvs|const char* s
294Like C<newSVpvn>, but takes a literal C<NUL>-terminated string instead of a
295string/length pair.
296
297=for apidoc Ama|SV*|newSVpvs_flags|const char* s|U32 flags
298Like C<newSVpvn_flags>, but takes a literal C<NUL>-terminated string instead of
299a string/length pair.
300
301=for apidoc Ama|SV*|newSVpvs_share|const char* s
302Like C<newSVpvn_share>, but takes a literal C<NUL>-terminated string instead of
303a string/length pair and omits the hash parameter.
304
305=for apidoc Am|void|sv_catpvs_flags|SV* sv|const char* s|I32 flags
306Like C<sv_catpvn_flags>, but takes a literal C<NUL>-terminated string instead
307of a string/length pair.
308
309=for apidoc Am|void|sv_catpvs_nomg|SV* sv|const char* s
310Like C<sv_catpvn_nomg>, but takes a literal string instead of a
311string/length pair.
312
313=for apidoc Am|void|sv_catpvs|SV* sv|const char* s
314Like C<sv_catpvn>, but takes a literal string instead of a string/length pair.
315
316=for apidoc Am|void|sv_catpvs_mg|SV* sv|const char* s
317Like C<sv_catpvn_mg>, but takes a literal string instead of a
318string/length pair.
319
320=for apidoc Am|void|sv_setpvs|SV* sv|const char* s
321Like C<sv_setpvn>, but takes a literal string instead of a string/length pair.
322
323=for apidoc Am|void|sv_setpvs_mg|SV* sv|const char* s
324Like C<sv_setpvn_mg>, but takes a literal string instead of a
325string/length pair.
326
327=for apidoc Am|SV *|sv_setref_pvs|const char* s
328Like C<sv_setref_pvn>, but takes a literal string instead of a
329string/length pair.
330
331=head1 Memory Management
332
333=for apidoc Ama|char*|savepvs|const char* s
334Like C<savepvn>, but takes a literal C<NUL>-terminated string instead of a
335string/length pair.
336
337=for apidoc Ama|char*|savesharedpvs|const char* s
338A version of C<savepvs()> which allocates the duplicate string in memory
339which is shared between threads.
340
341=head1 GV Functions
342
343=for apidoc Am|HV*|gv_stashpvs|const char* name|I32 create
344Like C<gv_stashpvn>, but takes a literal string instead of a string/length pair.
345
346=head1 Hash Manipulation Functions
347
348=for apidoc Am|SV**|hv_fetchs|HV* tb|const char* key|I32 lval
349Like C<hv_fetch>, but takes a literal string instead of a string/length pair.
350
351=for apidoc Am|SV**|hv_stores|HV* tb|const char* key|NULLOK SV* val
352Like C<hv_store>, but takes a literal string instead of a string/length pair
353and omits the hash parameter.
354
355=head1 Lexer interface
356
357=for apidoc Amx|void|lex_stuff_pvs|const char *pv|U32 flags
358
359Like L</lex_stuff_pvn>, but takes a literal string instead of a
360string/length pair.
361
362=cut
363*/
364
365/* concatenating with "" ensures that only literal strings are accepted as
366 * argument */
367#define STR_WITH_LEN(s) ("" s ""), (sizeof(s)-1)
368
369/* note that STR_WITH_LEN() can't be used as argument to macros or functions
370 * that under some configurations might be macros, which means that it requires
371 * the full Perl_xxx(aTHX_ ...) form for any API calls where it's used.
372 */
373
374/* STR_WITH_LEN() shortcuts */
375#define newSVpvs(str) Perl_newSVpvn(aTHX_ STR_WITH_LEN(str))
376#define newSVpvs_flags(str,flags) \
377 Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN(str), flags)
378#define newSVpvs_share(str) Perl_newSVpvn_share(aTHX_ STR_WITH_LEN(str), 0)
379#define sv_catpvs_flags(sv, str, flags) \
380 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), flags)
381#define sv_catpvs_nomg(sv, str) \
382 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), 0)
383#define sv_catpvs(sv, str) \
384 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), SV_GMAGIC)
385#define sv_catpvs_mg(sv, str) \
386 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), SV_GMAGIC|SV_SMAGIC)
387#define sv_setpvs(sv, str) Perl_sv_setpvn(aTHX_ sv, STR_WITH_LEN(str))
388#define sv_setpvs_mg(sv, str) Perl_sv_setpvn_mg(aTHX_ sv, STR_WITH_LEN(str))
389#define sv_setref_pvs(rv, classname, str) \
390 Perl_sv_setref_pvn(aTHX_ rv, classname, STR_WITH_LEN(str))
391#define savepvs(str) Perl_savepvn(aTHX_ STR_WITH_LEN(str))
392#define savesharedpvs(str) Perl_savesharedpvn(aTHX_ STR_WITH_LEN(str))
393#define gv_stashpvs(str, create) \
394 Perl_gv_stashpvn(aTHX_ STR_WITH_LEN(str), create)
395#define gv_fetchpvs(namebeg, add, sv_type) \
396 Perl_gv_fetchpvn_flags(aTHX_ STR_WITH_LEN(namebeg), add, sv_type)
397#define gv_fetchpvn(namebeg, len, add, sv_type) \
398 Perl_gv_fetchpvn_flags(aTHX_ namebeg, len, add, sv_type)
399#define sv_catxmlpvs(dsv, str, utf8) \
400 Perl_sv_catxmlpvn(aTHX_ dsv, STR_WITH_LEN(str), utf8)
401#define hv_fetchs(hv,key,lval) \
402 ((SV **)Perl_hv_common(aTHX_ (hv), NULL, STR_WITH_LEN(key), 0, \
403 (lval) ? (HV_FETCH_JUST_SV | HV_FETCH_LVALUE) \
404 : HV_FETCH_JUST_SV, NULL, 0))
405
406#define hv_stores(hv,key,val) \
407 ((SV **)Perl_hv_common(aTHX_ (hv), NULL, STR_WITH_LEN(key), 0, \
408 (HV_FETCH_ISSTORE|HV_FETCH_JUST_SV), (val), 0))
409
410#define lex_stuff_pvs(pv,flags) Perl_lex_stuff_pvn(aTHX_ STR_WITH_LEN(pv), flags)
411
412#define get_cvs(str, flags) \
413 Perl_get_cvn_flags(aTHX_ STR_WITH_LEN(str), (flags))
414
415/*
416=head1 Miscellaneous Functions
417
418=for apidoc Am|bool|strNE|char* s1|char* s2
419Test two strings to see if they are different. Returns true or
420false.
421
422=for apidoc Am|bool|strEQ|char* s1|char* s2
423Test two strings to see if they are equal. Returns true or false.
424
425=for apidoc Am|bool|strLT|char* s1|char* s2
426Test two strings to see if the first, C<s1>, is less than the second,
427C<s2>. Returns true or false.
428
429=for apidoc Am|bool|strLE|char* s1|char* s2
430Test two strings to see if the first, C<s1>, is less than or equal to the
431second, C<s2>. Returns true or false.
432
433=for apidoc Am|bool|strGT|char* s1|char* s2
434Test two strings to see if the first, C<s1>, is greater than the second,
435C<s2>. Returns true or false.
436
437=for apidoc Am|bool|strGE|char* s1|char* s2
438Test two strings to see if the first, C<s1>, is greater than or equal to
439the second, C<s2>. Returns true or false.
440
441=for apidoc Am|bool|strnNE|char* s1|char* s2|STRLEN len
442Test two strings to see if they are different. The C<len> parameter
443indicates the number of bytes to compare. Returns true or false. (A
444wrapper for C<strncmp>).
445
446=for apidoc Am|bool|strnEQ|char* s1|char* s2|STRLEN len
447Test two strings to see if they are equal. The C<len> parameter indicates
448the number of bytes to compare. Returns true or false. (A wrapper for
449C<strncmp>).
450
451=cut
452*/
453
454#define strNE(s1,s2) (strcmp(s1,s2))
455#define strEQ(s1,s2) (!strcmp(s1,s2))
456#define strLT(s1,s2) (strcmp(s1,s2) < 0)
457#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
458#define strGT(s1,s2) (strcmp(s1,s2) > 0)
459#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
460#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
461#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
462
463#ifdef HAS_MEMCMP
464# define memNE(s1,s2,l) (memcmp(s1,s2,l))
465# define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
466#else
467# define memNE(s1,s2,l) (bcmp(s1,s2,l))
468# define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
469#endif
470
471#define memEQs(s1, l, s2) \
472 (sizeof(s2)-1 == l && memEQ(s1, ("" s2 ""), (sizeof(s2)-1)))
473#define memNEs(s1, l, s2) !memEQs(s1, l, s2)
474
475/*
476 * Character classes.
477 *
478 * Unfortunately, the introduction of locales means that we
479 * can't trust isupper(), etc. to tell the truth. And when
480 * it comes to /\w+/ with tainting enabled, we *must* be able
481 * to trust our character classes.
482 *
483 * Therefore, the default tests in the text of Perl will be
484 * independent of locale. Any code that wants to depend on
485 * the current locale will use the tests that begin with "lc".
486 */
487
488#ifdef HAS_SETLOCALE /* XXX Is there a better test for this? */
489# ifndef CTYPE256
490# define CTYPE256
491# endif
492#endif
493
494/*
495
496=head1 Character classification
497This section is about functions (really macros) that classify characters
498into types, such as punctuation versus alphabetic, etc. Most of these are
499analogous to regular expression character classes. (See
500L<perlrecharclass/POSIX Character Classes>.) There are several variants for
501each class. (Not all macros have all variants; each item below lists the
502ones valid for it.) None are affected by C<use bytes>, and only the ones
503with C<LC> in the name are affected by the current locale.
504
505The base function, e.g., C<isALPHA()>, takes an octet (either a C<char> or a
506C<U8>) as input and returns a boolean as to whether or not the character
507represented by that octet is (or on non-ASCII platforms, corresponds to) an
508ASCII character in the named class based on platform, Unicode, and Perl rules.
509If the input is a number that doesn't fit in an octet, FALSE is returned.
510
511Variant C<isFOO_A> (e.g., C<isALPHA_A()>) is identical to the base function
512with no suffix C<"_A">.
513
514Variant C<isFOO_L1> imposes the Latin-1 (or EBCDIC equivlalent) character set
515onto the platform. That is, the code points that are ASCII are unaffected,
516since ASCII is a subset of Latin-1. But the non-ASCII code points are treated
517as if they are Latin-1 characters. For example, C<isWORDCHAR_L1()> will return
518true when called with the code point 0xDF, which is a word character in both
519ASCII and EBCDIC (though it represents different characters in each).
520
521Variant C<isFOO_uni> is like the C<isFOO_L1> variant, but accepts any UV code
522point as input. If the code point is larger than 255, Unicode rules are used
523to determine if it is in the character class. For example,
524C<isWORDCHAR_uni(0x100)> returns TRUE, since 0x100 is LATIN CAPITAL LETTER A
525WITH MACRON in Unicode, and is a word character.
526
527Variant C<isFOO_utf8> is like C<isFOO_uni>, but the input is a pointer to a
528(known to be well-formed) UTF-8 encoded string (C<U8*> or C<char*>). The
529classification of just the first (possibly multi-byte) character in the string
530is tested.
531
532Variant C<isFOO_LC> is like the C<isFOO_A> and C<isFOO_L1> variants, but the
533result is based on the current locale, which is what C<LC> in the name stands
534for. If Perl can determine that the current locale is a UTF-8 locale, it uses
535the published Unicode rules; otherwise, it uses the C library function that
536gives the named classification. For example, C<isDIGIT_LC()> when not in a
537UTF-8 locale returns the result of calling C<isdigit()>. FALSE is always
538returned if the input won't fit into an octet.
539
540Variant C<isFOO_LC_uvchr> is like C<isFOO_LC>, but is defined on any UV. It
541returns the same as C<isFOO_LC> for input code points less than 256, and
542returns the hard-coded, not-affected-by-locale, Unicode results for larger ones.
543
544Variant C<isFOO_LC_utf8> is like C<isFOO_LC_uvchr>, but the input is a pointer to a
545(known to be well-formed) UTF-8 encoded string (C<U8*> or C<char*>). The
546classification of just the first (possibly multi-byte) character in the string
547is tested.
548
549=for apidoc Am|bool|isALPHA|char ch
550Returns a boolean indicating whether the specified character is an
551alphabetic character, analogous to C<m/[[:alpha:]]/>.
552See the L<top of this section|/Character classification> for an explanation of
553variants
554C<isALPHA_A>, C<isALPHA_L1>, C<isALPHA_uni>, C<isALPHA_utf8>, C<isALPHA_LC>,
555C<isALPHA_LC_uvchr>, and C<isALPHA_LC_utf8>.
556
557=for apidoc Am|bool|isALPHANUMERIC|char ch
558Returns a boolean indicating whether the specified character is a either an
559alphabetic character or decimal digit, analogous to C<m/[[:alnum:]]/>.
560See the L<top of this section|/Character classification> for an explanation of
561variants
562C<isALPHANUMERIC_A>, C<isALPHANUMERIC_L1>, C<isALPHANUMERIC_uni>,
563C<isALPHANUMERIC_utf8>, C<isALPHANUMERIC_LC>, C<isALPHANUMERIC_LC_uvchr>, and
564C<isALPHANUMERIC_LC_utf8>.
565
566=for apidoc Am|bool|isASCII|char ch
567Returns a boolean indicating whether the specified character is one of the 128
568characters in the ASCII character set, analogous to C<m/[[:ascii:]]/>.
569On non-ASCII platforms, it returns TRUE iff this
570character corresponds to an ASCII character. Variants C<isASCII_A()> and
571C<isASCII_L1()> are identical to C<isASCII()>.
572See the L<top of this section|/Character classification> for an explanation of
573variants
574C<isASCII_uni>, C<isASCII_utf8>, C<isASCII_LC>, C<isASCII_LC_uvchr>, and
575C<isASCII_LC_utf8>. Note, however, that some platforms do not have the C
576library routine C<isascii()>. In these cases, the variants whose names contain
577C<LC> are the same as the corresponding ones without.
578
579Also note, that because all ASCII characters are UTF-8 invariant (meaning they
580have the exact same representation (always a single byte) whether encoded in
581UTF-8 or not), C<isASCII> will give the correct results when called with any
582byte in any string encoded or not in UTF-8. And similarly C<isASCII_utf8> will
583work properly on any string encoded or not in UTF-8.
584
585=for apidoc Am|bool|isBLANK|char ch
586Returns a boolean indicating whether the specified character is a
587character considered to be a blank, analogous to C<m/[[:blank:]]/>.
588See the L<top of this section|/Character classification> for an explanation of
589variants
590C<isBLANK_A>, C<isBLANK_L1>, C<isBLANK_uni>, C<isBLANK_utf8>, C<isBLANK_LC>,
591C<isBLANK_LC_uvchr>, and C<isBLANK_LC_utf8>. Note, however, that some
592platforms do not have the C library routine C<isblank()>. In these cases, the
593variants whose names contain C<LC> are the same as the corresponding ones
594without.
595
596=for apidoc Am|bool|isCNTRL|char ch
597Returns a boolean indicating whether the specified character is a
598control character, analogous to C<m/[[:cntrl:]]/>.
599See the L<top of this section|/Character classification> for an explanation of
600variants
601C<isCNTRL_A>, C<isCNTRL_L1>, C<isCNTRL_uni>, C<isCNTRL_utf8>, C<isCNTRL_LC>,
602C<isCNTRL_LC_uvchr>, and C<isCNTRL_LC_utf8>
603On EBCDIC platforms, you almost always want to use the C<isCNTRL_L1> variant.
604
605=for apidoc Am|bool|isDIGIT|char ch
606Returns a boolean indicating whether the specified character is a
607digit, analogous to C<m/[[:digit:]]/>.
608Variants C<isDIGIT_A> and C<isDIGIT_L1> are identical to C<isDIGIT>.
609See the L<top of this section|/Character classification> for an explanation of
610variants
611C<isDIGIT_uni>, C<isDIGIT_utf8>, C<isDIGIT_LC>, C<isDIGIT_LC_uvchr>, and
612C<isDIGIT_LC_utf8>.
613
614=for apidoc Am|bool|isGRAPH|char ch
615Returns a boolean indicating whether the specified character is a
616graphic character, analogous to C<m/[[:graph:]]/>.
617See the L<top of this section|/Character classification> for an explanation of
618variants
619C<isGRAPH_A>, C<isGRAPH_L1>, C<isGRAPH_uni>, C<isGRAPH_utf8>, C<isGRAPH_LC>,
620C<isGRAPH_LC_uvchr>, and C<isGRAPH_LC_utf8>.
621
622=for apidoc Am|bool|isLOWER|char ch
623Returns a boolean indicating whether the specified character is a
624lowercase character, analogous to C<m/[[:lower:]]/>.
625See the L<top of this section|/Character classification> for an explanation of
626variants
627C<isLOWER_A>, C<isLOWER_L1>, C<isLOWER_uni>, C<isLOWER_utf8>, C<isLOWER_LC>,
628C<isLOWER_LC_uvchr>, and C<isLOWER_LC_utf8>.
629
630=for apidoc Am|bool|isOCTAL|char ch
631Returns a boolean indicating whether the specified character is an
632octal digit, [0-7].
633The only two variants are C<isOCTAL_A> and C<isOCTAL_L1>; each is identical to
634C<isOCTAL>.
635
636=for apidoc Am|bool|isPUNCT|char ch
637Returns a boolean indicating whether the specified character is a
638punctuation character, analogous to C<m/[[:punct:]]/>.
639Note that the definition of what is punctuation isn't as
640straightforward as one might desire. See L<perlrecharclass/POSIX Character
641Classes> for details.
642See the L<top of this section|/Character classification> for an explanation of
643variants
644C<isPUNCT_A>, C<isPUNCT_L1>, C<isPUNCT_uni>, C<isPUNCT_utf8>, C<isPUNCT_LC>,
645C<isPUNCT_LC_uvchr>, and C<isPUNCT_LC_utf8>.
646
647=for apidoc Am|bool|isSPACE|char ch
648Returns a boolean indicating whether the specified character is a
649whitespace character. This is analogous
650to what C<m/\s/> matches in a regular expression. Starting in Perl 5.18
651(experimentally), this also matches what C<m/[[:space:]]/> does.
652("Experimentally" means that this change may be backed out in 5.22 if
653field experience indicates that it was unwise.) Prior to 5.18, only the
654locale forms of this macro (the ones with C<LC> in their names) matched
655precisely what C<m/[[:space:]]/> does. In those releases, the only difference,
656in the non-locale variants, was that C<isSPACE()> did not match a vertical tab.
657(See L</isPSXSPC> for a macro that matches a vertical tab in all releases.)
658See the L<top of this section|/Character classification> for an explanation of
659variants
660C<isSPACE_A>, C<isSPACE_L1>, C<isSPACE_uni>, C<isSPACE_utf8>, C<isSPACE_LC>,
661C<isSPACE_LC_uvchr>, and C<isSPACE_LC_utf8>.
662
663=for apidoc Am|bool|isPSXSPC|char ch
664(short for Posix Space)
665Starting in 5.18, this is identical (experimentally) in all its forms to the
666corresponding C<isSPACE()> macros. ("Experimentally" means that this change
667may be backed out in 5.22 if field experience indicates that it
668was unwise.)
669The locale forms of this macro are identical to their corresponding
670C<isSPACE()> forms in all Perl releases. In releases prior to 5.18, the
671non-locale forms differ from their C<isSPACE()> forms only in that the
672C<isSPACE()> forms don't match a Vertical Tab, and the C<isPSXSPC()> forms do.
673Otherwise they are identical. Thus this macro is analogous to what
674C<m/[[:space:]]/> matches in a regular expression.
675See the L<top of this section|/Character classification> for an explanation of
676variants
677C<isPSXSPC_A>, C<isPSXSPC_L1>, C<isPSXSPC_uni>, C<isPSXSPC_utf8>, C<isPSXSPC_LC>,
678C<isPSXSPC_LC_uvchr>, and C<isPSXSPC_LC_utf8>.
679
680=for apidoc Am|bool|isUPPER|char ch
681Returns a boolean indicating whether the specified character is an
682uppercase character, analogous to C<m/[[:upper:]]/>.
683See the L<top of this section|/Character classification> for an explanation of
684variants
685C<isUPPER_A>, C<isUPPER_L1>, C<isUPPER_uni>, C<isUPPER_utf8>, C<isUPPER_LC>,
686C<isUPPER_LC_uvchr>, and C<isUPPER_LC_utf8>.
687
688=for apidoc Am|bool|isPRINT|char ch
689Returns a boolean indicating whether the specified character is a
690printable character, analogous to C<m/[[:print:]]/>.
691See the L<top of this section|/Character classification> for an explanation of
692variants
693C<isPRINT_A>, C<isPRINT_L1>, C<isPRINT_uni>, C<isPRINT_utf8>, C<isPRINT_LC>,
694C<isPRINT_LC_uvchr>, and C<isPRINT_LC_utf8>.
695
696=for apidoc Am|bool|isWORDCHAR|char ch
697Returns a boolean indicating whether the specified character is a character
698that is a word character, analogous to what C<m/\w/> and C<m/[[:word:]]/> match
699in a regular expression. A word character is an alphabetic character, a
700decimal digit, a connecting punctuation character (such as an underscore), or
701a "mark" character that attaches to one of those (like some sort of accent).
702C<isALNUM()> is a synonym provided for backward compatibility, even though a
703word character includes more than the standard C language meaning of
704alphanumeric.
705See the L<top of this section|/Character classification> for an explanation of
706variants
707C<isWORDCHAR_A>, C<isWORDCHAR_L1>, C<isWORDCHAR_uni>, C<isWORDCHAR_utf8>,
708C<isWORDCHAR_LC>, C<isWORDCHAR_LC_uvchr>, and C<isWORDCHAR_LC_utf8>.
709
710=for apidoc Am|bool|isXDIGIT|char ch
711Returns a boolean indicating whether the specified character is a hexadecimal
712digit. In the ASCII range these are C<[0-9A-Fa-f]>. Variants C<isXDIGIT_A()>
713and C<isXDIGIT_L1()> are identical to C<isXDIGIT()>.
714See the L<top of this section|/Character classification> for an explanation of
715variants
716C<isXDIGIT_uni>, C<isXDIGIT_utf8>, C<isXDIGIT_LC>, C<isXDIGIT_LC_uvchr>, and
717C<isXDIGIT_LC_utf8>.
718
719=for apidoc Am|bool|isIDFIRST|char ch
720Returns a boolean indicating whether the specified character can be the first
721character of an identifier. This is very close to, but not quite the same as
722the official Unicode property C<XID_Start>. The difference is that this
723returns true only if the input character also matches L</isWORDCHAR>.
724See the L<top of this section|/Character classification> for an explanation of
725variants
726C<isIDFIRST_A>, C<isIDFIRST_L1>, C<isIDFIRST_uni>, C<isIDFIRST_utf8>,
727C<isIDFIRST_LC>, C<isIDFIRST_LC_uvchr>, and C<isIDFIRST_LC_utf8>.
728
729=for apidoc Am|bool|isIDCONT|char ch
730Returns a boolean indicating whether the specified character can be the
731second or succeeding character of an identifier. This is very close to, but
732not quite the same as the official Unicode property C<XID_Continue>. The
733difference is that this returns true only if the input character also matches
734L</isWORDCHAR>. See the L<top of this section|/Character classification> for
735an
736explanation of variants C<isIDCONT_A>, C<isIDCONT_L1>, C<isIDCONT_uni>,
737C<isIDCONT_utf8>, C<isIDCONT_LC>, C<isIDCONT_LC_uvchr>, and
738C<isIDCONT_LC_utf8>.
739
740=head1 Miscellaneous Functions
741
742=for apidoc Am|U8|READ_XDIGIT|char str*
743Returns the value of an ASCII-range hex digit and advances the string pointer.
744Behaviour is only well defined when isXDIGIT(*str) is true.
745
746=head1 Character case changing
747
748=for apidoc Am|U8|toUPPER|U8 ch
749Converts the specified character to uppercase. If the input is anything but an
750ASCII lowercase character, that input character itself is returned. Variant
751C<toUPPER_A> is equivalent.
752
753=for apidoc Am|UV|toUPPER_uni|UV cp|U8* s|STRLEN* lenp
754Converts the Unicode code point C<cp> to its uppercase version, and
755stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
756that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
757bytes since the uppercase version may be longer than the original character.
758
759The first code point of the uppercased version is returned
760(but note, as explained just above, that there may be more.)
761
762=for apidoc Am|UV|toUPPER_utf8|U8* p|U8* s|STRLEN* lenp
763Converts the UTF-8 encoded character at C<p> to its uppercase version, and
764stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
765that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
766bytes since the uppercase version may be longer than the original character.
767
768The first code point of the uppercased version is returned
769(but note, as explained just above, that there may be more.)
770
771The input character at C<p> is assumed to be well-formed.
772
773=for apidoc Am|U8|toFOLD|U8 ch
774Converts the specified character to foldcase. If the input is anything but an
775ASCII uppercase character, that input character itself is returned. Variant
776C<toFOLD_A> is equivalent. (There is no equivalent C<to_FOLD_L1> for the full
777Latin1 range, as the full generality of L</toFOLD_uni> is needed there.)
778
779=for apidoc Am|UV|toFOLD_uni|UV cp|U8* s|STRLEN* lenp
780Converts the Unicode code point C<cp> to its foldcase version, and
781stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
782that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
783bytes since the foldcase version may be longer than the original character.
784
785The first code point of the foldcased version is returned
786(but note, as explained just above, that there may be more.)
787
788=for apidoc Am|UV|toFOLD_utf8|U8* p|U8* s|STRLEN* lenp
789Converts the UTF-8 encoded character at C<p> to its foldcase version, and
790stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
791that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
792bytes since the foldcase version may be longer than the original character.
793
794The first code point of the foldcased version is returned
795(but note, as explained just above, that there may be more.)
796
797The input character at C<p> is assumed to be well-formed.
798
799=for apidoc Am|U8|toLOWER|U8 ch
800Converts the specified character to lowercase. If the input is anything but an
801ASCII uppercase character, that input character itself is returned. Variant
802C<toLOWER_A> is equivalent.
803
804=for apidoc Am|U8|toLOWER_L1|U8 ch
805Converts the specified Latin1 character to lowercase. The results are undefined if
806the input doesn't fit in a byte.
807
808=for apidoc Am|U8|toLOWER_LC|U8 ch
809Converts the specified character to lowercase using the current locale's rules,
810if possible; otherwise returns the input character itself.
811
812=for apidoc Am|UV|toLOWER_uni|UV cp|U8* s|STRLEN* lenp
813Converts the Unicode code point C<cp> to its lowercase version, and
814stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
815that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
816bytes since the lowercase version may be longer than the original character.
817
818The first code point of the lowercased version is returned
819(but note, as explained just above, that there may be more.)
820
821=for apidoc Am|UV|toLOWER_utf8|U8* p|U8* s|STRLEN* lenp
822Converts the UTF-8 encoded character at C<p> to its lowercase version, and
823stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
824that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
825bytes since the lowercase version may be longer than the original character.
826
827The first code point of the lowercased version is returned
828(but note, as explained just above, that there may be more.)
829
830The input character at C<p> is assumed to be well-formed.
831
832=for apidoc Am|U8|toLOWER_LC|U8 ch
833Converts the specified character to lowercase using the current locale's rules,
834if possible; otherwise returns the input character itself.
835
836=for apidoc Am|U8|toTITLE|U8 ch
837Converts the specified character to titlecase. If the input is anything but an
838ASCII lowercase character, that input character itself is returned. Variant
839C<toTITLE_A> is equivalent. (There is no C<toTITLE_L1> for the full Latin1 range,
840as the full generality of L</toTITLE_uni> is needed there. Titlecase is not a
841concept used in locale handling, so there is no functionality for that.)
842
843=for apidoc Am|UV|toTITLE_uni|UV cp|U8* s|STRLEN* lenp
844Converts the Unicode code point C<cp> to its titlecase version, and
845stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
846that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
847bytes since the titlecase version may be longer than the original character.
848
849The first code point of the titlecased version is returned
850(but note, as explained just above, that there may be more.)
851
852=for apidoc Am|UV|toTITLE_utf8|U8* p|U8* s|STRLEN* lenp
853Converts the UTF-8 encoded character at C<p> to its titlecase version, and
854stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
855that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
856bytes since the titlecase version may be longer than the original character.
857
858The first code point of the titlecased version is returned
859(but note, as explained just above, that there may be more.)
860
861The input character at C<p> is assumed to be well-formed.
862
863=cut
864
865XXX Still undocumented isVERTWS_uni and _utf8; it's unclear what their names
866really should be. Also toUPPER_LC and toFOLD_LC, which are subject to change.
867
868Note that these macros are repeated in Devel::PPPort, so should also be
869patched there. The file as of this writing is cpan/Devel-PPPort/parts/inc/misc
870
871*/
872
873/* Specify the widest unsigned type on the platform. Use U64TYPE because U64
874 * is known only in the perl core, and this macro can be called from outside
875 * that */
876#ifdef HAS_QUAD
877# define WIDEST_UTYPE U64TYPE
878#else
879# define WIDEST_UTYPE U32
880#endif
881
882/* FITS_IN_8_BITS(c) returns true if c doesn't have a bit set other than in
883 * the lower 8. It is designed to be hopefully bomb-proof, making sure that no
884 * bits of information are lost even on a 64-bit machine, but to get the
885 * compiler to optimize it out if possible. This is because Configure makes
886 * sure that the machine has an 8-bit byte, so if c is stored in a byte, the
887 * sizeof() guarantees that this evaluates to a constant true at compile time.
888 */
889#define FITS_IN_8_BITS(c) ((sizeof(c) == 1) || !(((WIDEST_UTYPE)(c)) & ~0xFF))
890
891#ifdef EBCDIC
892# ifndef _ALL_SOURCE
893 /* This returns the wrong results on at least z/OS unless this is
894 * defined. */
895# error _ALL_SOURCE should probably be defined
896# endif
897
898 /* We could be called without perl.h, in which case NATIVE_TO_ASCII() is
899 * likely not defined, and so we use the native function */
900# define isASCII(c) cBOOL(isascii(c))
901#else
902# define isASCII(c) ((WIDEST_UTYPE)(c) < 128)
903#endif
904
905#define isASCII_A(c) isASCII(c)
906#define isASCII_L1(c) isASCII(c)
907
908/* The lower 3 bits in both the ASCII and EBCDIC representations of '0' are 0,
909 * and the 8 possible permutations of those bits exactly comprise the 8 octal
910 * digits */
911#define isOCTAL_A(c) cBOOL(FITS_IN_8_BITS(c) && (0xF8 & (c)) == '0')
912
913/* ASCII range only */
914#ifdef H_PERL /* If have access to perl.h, lookup in its table */
915
916/* Character class numbers. For internal core Perl use only. The ones less
917 * than 32 are used in PL_charclass[] and the ones up through the one that
918 * corresponds to <_HIGHEST_REGCOMP_DOT_H_SYNC> are used by regcomp.h and
919 * related files. PL_charclass ones use names used in l1_char_class_tab.h but
920 * their actual definitions are here. If that file has a name not used here,
921 * it won't compile.
922 *
923 * The first group of these is ordered in what I (khw) estimate to be the
924 * frequency of their use. This gives a slight edge to exiting a loop earlier
925 * (in reginclass() in regexec.c) */
926# define _CC_WORDCHAR 0 /* \w and [:word:] */
927# define _CC_DIGIT 1 /* \d and [:digit:] */
928# define _CC_ALPHA 2 /* [:alpha:] */
929# define _CC_LOWER 3 /* [:lower:] */
930# define _CC_UPPER 4 /* [:upper:] */
931# define _CC_PUNCT 5 /* [:punct:] */
932# define _CC_PRINT 6 /* [:print:] */
933# define _CC_ALPHANUMERIC 7 /* [:alnum:] */
934# define _CC_GRAPH 8 /* [:graph:] */
935# define _CC_CASED 9 /* [:lower:] and [:upper:] under /i */
936
937#define _FIRST_NON_SWASH_CC 10
938/* The character classes above are implemented with swashes. The second group
939 * (just below) contains the ones implemented without. These are also sorted
940 * in rough order of the frequency of their use, except that \v should be last,
941 * as it isn't a real Posix character class, and some (small) inefficiencies in
942 * regular expression handling would be introduced by putting it in the middle
943 * of those that are. Also, cntrl and ascii come after the others as it may be
944 * useful to group these which have no members that match above Latin1, (or
945 * above ASCII in the latter case) */
946
947# define _CC_SPACE 10 /* \s */
948# define _CC_BLANK 11 /* [:blank:] */
949# define _CC_XDIGIT 12 /* [:xdigit:] */
950# define _CC_PSXSPC 13 /* [:space:] */
951# define _CC_CNTRL 14 /* [:cntrl:] */
952# define _CC_ASCII 15 /* [:ascii:] */
953# define _CC_VERTSPACE 16 /* \v */
954
955# define _HIGHEST_REGCOMP_DOT_H_SYNC _CC_VERTSPACE
956
957/* The members of the third group below do not need to be coordinated with data
958 * structures in regcomp.[ch] and regexec.c. */
959# define _CC_IDFIRST 17
960# define _CC_CHARNAME_CONT 18
961# define _CC_NONLATIN1_FOLD 19
962# define _CC_NONLATIN1_SIMPLE_FOLD 20
963# define _CC_QUOTEMETA 21
964# define _CC_NON_FINAL_FOLD 22
965# define _CC_IS_IN_SOME_FOLD 23
966# define _CC_MNEMONIC_CNTRL 24
967/* Unused: 25-31
968 * If more bits are needed, one could add a second word for non-64bit
969 * QUAD_IS_INT systems, using some #ifdefs to distinguish between having a 2nd
970 * word or not. The IS_IN_SOME_FOLD bit is the most easily expendable, as it
971 * is used only for optimization (as of this writing), and differs in the
972 * Latin1 range from the ALPHA bit only in two relatively unimportant
973 * characters: the masculine and feminine ordinal indicators, so removing it
974 * would just cause /i regexes which match them to run less efficiently */
975
976#if defined(PERL_CORE) || defined(PERL_EXT)
977/* An enum version of the character class numbers, to help compilers
978 * optimize */
979typedef enum {
980 _CC_ENUM_ALPHA = _CC_ALPHA,
981 _CC_ENUM_ALPHANUMERIC = _CC_ALPHANUMERIC,
982 _CC_ENUM_ASCII = _CC_ASCII,
983 _CC_ENUM_BLANK = _CC_BLANK,
984 _CC_ENUM_CASED = _CC_CASED,
985 _CC_ENUM_CNTRL = _CC_CNTRL,
986 _CC_ENUM_DIGIT = _CC_DIGIT,
987 _CC_ENUM_GRAPH = _CC_GRAPH,
988 _CC_ENUM_LOWER = _CC_LOWER,
989 _CC_ENUM_PRINT = _CC_PRINT,
990 _CC_ENUM_PSXSPC = _CC_PSXSPC,
991 _CC_ENUM_PUNCT = _CC_PUNCT,
992 _CC_ENUM_SPACE = _CC_SPACE,
993 _CC_ENUM_UPPER = _CC_UPPER,
994 _CC_ENUM_VERTSPACE = _CC_VERTSPACE,
995 _CC_ENUM_WORDCHAR = _CC_WORDCHAR,
996 _CC_ENUM_XDIGIT = _CC_XDIGIT
997} _char_class_number;
998#endif
999
1000#define POSIX_SWASH_COUNT _FIRST_NON_SWASH_CC
1001#define POSIX_CC_COUNT (_HIGHEST_REGCOMP_DOT_H_SYNC + 1)
1002
1003#if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
1004# if _CC_WORDCHAR != 0 || _CC_DIGIT != 1 || _CC_ALPHA != 2 || _CC_LOWER != 3 \
1005 || _CC_UPPER != 4 || _CC_PUNCT != 5 || _CC_PRINT != 6 \
1006 || _CC_ALPHANUMERIC != 7 || _CC_GRAPH != 8 || _CC_CASED != 9
1007 #error Need to adjust order of swash_property_names[]
1008# endif
1009
1010/* This is declared static in each of the few files that this is #defined for
1011 * to keep them from being publicly accessible. Hence there is a small amount
1012 * of wasted space */
1013
1014static const char* const swash_property_names[] = {
1015 "XPosixWord",
1016 "XPosixDigit",
1017 "XPosixAlpha",
1018 "XPosixLower",
1019 "XPosixUpper",
1020 "XPosixPunct",
1021 "XPosixPrint",
1022 "XPosixAlnum",
1023 "XPosixGraph",
1024 "Cased"
1025};
1026#endif
1027
1028# ifdef DOINIT
1029EXTCONST U32 PL_charclass[] = {
1030# include "l1_char_class_tab.h"
1031};
1032
1033# else /* ! DOINIT */
1034EXTCONST U32 PL_charclass[];
1035# endif
1036
1037 /* The 1U keeps Solaris from griping when shifting sets the uppermost bit */
1038# define _CC_mask(classnum) (1U << (classnum))
1039
1040 /* For internal core Perl use only: the base macro for defining macros like
1041 * isALPHA */
1042# define _generic_isCC(c, classnum) cBOOL(FITS_IN_8_BITS(c) \
1043 && (PL_charclass[(U8) (c)] & _CC_mask(classnum)))
1044
1045 /* The mask for the _A versions of the macros; it just adds in the bit for
1046 * ASCII. */
1047# define _CC_mask_A(classnum) (_CC_mask(classnum) | _CC_mask(_CC_ASCII))
1048
1049 /* For internal core Perl use only: the base macro for defining macros like
1050 * isALPHA_A. The foo_A version makes sure that both the desired bit and
1051 * the ASCII bit are present */
1052# define _generic_isCC_A(c, classnum) (FITS_IN_8_BITS(c) \
1053 && ((PL_charclass[(U8) (c)] & _CC_mask_A(classnum)) \
1054 == _CC_mask_A(classnum)))
1055
1056# define isALPHA_A(c) _generic_isCC_A(c, _CC_ALPHA)
1057# define isALPHANUMERIC_A(c) _generic_isCC_A(c, _CC_ALPHANUMERIC)
1058# define isBLANK_A(c) _generic_isCC_A(c, _CC_BLANK)
1059# define isCNTRL_A(c) _generic_isCC_A(c, _CC_CNTRL)
1060# define isDIGIT_A(c) _generic_isCC(c, _CC_DIGIT) /* No non-ASCII digits */
1061# define isGRAPH_A(c) _generic_isCC_A(c, _CC_GRAPH)
1062# define isLOWER_A(c) _generic_isCC_A(c, _CC_LOWER)
1063# define isPRINT_A(c) _generic_isCC_A(c, _CC_PRINT)
1064# define isPSXSPC_A(c) _generic_isCC_A(c, _CC_PSXSPC)
1065# define isPUNCT_A(c) _generic_isCC_A(c, _CC_PUNCT)
1066# define isSPACE_A(c) _generic_isCC_A(c, _CC_SPACE)
1067# define isUPPER_A(c) _generic_isCC_A(c, _CC_UPPER)
1068# define isWORDCHAR_A(c) _generic_isCC_A(c, _CC_WORDCHAR)
1069# define isXDIGIT_A(c) _generic_isCC(c, _CC_XDIGIT) /* No non-ASCII xdigits */
1070# define isIDFIRST_A(c) _generic_isCC_A(c, _CC_IDFIRST)
1071# define isALPHA_L1(c) _generic_isCC(c, _CC_ALPHA)
1072# define isALPHANUMERIC_L1(c) _generic_isCC(c, _CC_ALPHANUMERIC)
1073# define isBLANK_L1(c) _generic_isCC(c, _CC_BLANK)
1074
1075 /* continuation character for legal NAME in \N{NAME} */
1076# define isCHARNAME_CONT(c) _generic_isCC(c, _CC_CHARNAME_CONT)
1077
1078# define isCNTRL_L1(c) _generic_isCC(c, _CC_CNTRL)
1079# define isGRAPH_L1(c) _generic_isCC(c, _CC_GRAPH)
1080# define isLOWER_L1(c) _generic_isCC(c, _CC_LOWER)
1081# define isPRINT_L1(c) _generic_isCC(c, _CC_PRINT)
1082# define isPSXSPC_L1(c) _generic_isCC(c, _CC_PSXSPC)
1083# define isPUNCT_L1(c) _generic_isCC(c, _CC_PUNCT)
1084# define isSPACE_L1(c) _generic_isCC(c, _CC_SPACE)
1085# define isUPPER_L1(c) _generic_isCC(c, _CC_UPPER)
1086# define isWORDCHAR_L1(c) _generic_isCC(c, _CC_WORDCHAR)
1087# define isIDFIRST_L1(c) _generic_isCC(c, _CC_IDFIRST)
1088
1089 /* Participates in a single-character fold with a character above 255 */
1090# define _HAS_NONLATIN1_SIMPLE_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(c) ((! cBOOL(FITS_IN_8_BITS(c))) || (PL_charclass[(U8) (c)] & _CC_mask(_CC_NONLATIN1_SIMPLE_FOLD)))
1091
1092 /* Like the above, but also can be part of a multi-char fold */
1093# define _HAS_NONLATIN1_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(c) ((! cBOOL(FITS_IN_8_BITS(c))) || (PL_charclass[(U8) (c)] & _CC_mask(_CC_NONLATIN1_FOLD)))
1094
1095# define _isQUOTEMETA(c) _generic_isCC(c, _CC_QUOTEMETA)
1096# define _IS_NON_FINAL_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
1097 _generic_isCC(c, _CC_NON_FINAL_FOLD)
1098# define _IS_IN_SOME_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
1099 _generic_isCC(c, _CC_IS_IN_SOME_FOLD)
1100# define _IS_MNEMONIC_CNTRL_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
1101 _generic_isCC(c, _CC_MNEMONIC_CNTRL)
1102#else /* else we don't have perl.h */
1103
1104 /* If we don't have perl.h, we are compiling a utility program. Below we
1105 * hard-code various macro definitions that wouldn't otherwise be available
1106 * to it. */
1107# ifdef EBCDIC
1108 /* Use the native functions. They likely will return false for all
1109 * non-ASCII values, but this makes sure */
1110# define isLOWER_A(c) (isASCII(c) && islower(c))
1111# define isPRINT_A(c) (isASCII(c) && isprint(c))
1112# define isUPPER_A(c) (isASCII(c) && isupper(c))
1113# else /* ASCII platform. These are coded based on first principals */
1114# define isLOWER_A(c) ((c) >= 'a' && (c) <= 'z')
1115# define isPRINT_A(c) (((c) >= 32 && (c) < 127))
1116# define isUPPER_A(c) ((c) <= 'Z' && (c) >= 'A')
1117# endif /* Below are common definitions for ASCII and non-ASCII */
1118# define isALPHA_A(c) (isUPPER_A(c) || isLOWER_A(c))
1119# define isALPHANUMERIC_A(c) (isALPHA_A(c) || isDIGIT_A(c))
1120# define isBLANK_A(c) ((c) == ' ' || (c) == '\t')
1121# define isCNTRL_A(c) (isASCII(c) && (! isPRINT_A(c)))
1122# define isDIGIT_A(c) ((c) <= '9' && (c) >= '0')
1123# define isGRAPH_A(c) (isPRINT_A(c) && (c) != ' ')
1124# define isIDFIRST_A(c) (isALPHA_A(c) || (c) == '_')
1125# define isPUNCT_A(c) (isGRAPH_A(c) && (! isALPHANUMERIC_A(c)))
1126# define isSPACE_A(c) ((c) == ' ' \
1127 || (c) == '\t' \
1128 || (c) == '\n' \
1129 || (c) == '\r' \
1130 || (c) == '\v' \
1131 || (c) == '\f')
1132# define isWORDCHAR_A(c) (isALPHANUMERIC_A(c) || (c) == '_')
1133# define isXDIGIT_A(c) (isDIGIT_A(c) \
1134 || ((c) >= 'a' && (c) <= 'f') \
1135 || ((c) <= 'F' && (c) >= 'A'))
1136
1137 /* The _L1 macros may be unnecessary for the utilities; I (khw) added them
1138 * during debugging, and it seems best to keep them. */
1139# define isPSXSPC_A(c) isSPACE_A(c) /* XXX Assumes SPACE matches '\v' */
1140# define isALPHA_L1(c) (isUPPER_L1(c) || isLOWER_L1(c))
1141# define isALPHANUMERIC_L1(c) (isALPHA_L1(c) || isDIGIT_A(c))
1142# define isBLANK_L1(c) (isBLANK_A(c) \
1143 || (FITS_IN_8_BITS(c) \
1144 && NATIVE_TO_LATIN1((U8) c) == 0xA0))
1145# define isCNTRL_L1(c) (FITS_IN_8_BITS(c) && (! isPRINT_L1(c)))
1146# define isGRAPH_L1(c) (isPRINT_L1(c) && (! isBLANK_L1(c)))
1147# define isLOWER_L1(c) (isLOWER_A(c) \
1148 || (FITS_IN_8_BITS(c) \
1149 && ((NATIVE_TO_LATIN1((U8) c) >= 0xDF \
1150 && NATIVE_TO_LATIN1((U8) c) != 0xF7) \
1151 || NATIVE_TO_LATIN1((U8) c) == 0xAA \
1152 || NATIVE_TO_LATIN1((U8) c) == 0xBA \
1153 || NATIVE_TO_LATIN1((U8) c) == 0xB5)))
1154# define isPRINT_L1(c) (isPRINT_A(c) \
1155 || (FITS_IN_8_BITS(c) \
1156 && NATIVE_TO_LATIN1((U8) c) >= 0xA0))
1157# define isPSXSPC_L1(c) isSPACE_L1(c)
1158# define isPUNCT_L1(c) (isPUNCT_A(c) \
1159 || (FITS_IN_8_BITS(c) \
1160 && (NATIVE_TO_LATIN1((U8) c) == 0xA1 \
1161 || NATIVE_TO_LATIN1((U8) c) == 0xA7 \
1162 || NATIVE_TO_LATIN1((U8) c) == 0xAB \
1163 || NATIVE_TO_LATIN1((U8) c) == 0xB6 \
1164 || NATIVE_TO_LATIN1((U8) c) == 0xB7 \
1165 || NATIVE_TO_LATIN1((U8) c) == 0xBB \
1166 || NATIVE_TO_LATIN1((U8) c) == 0xBF)))
1167# define isSPACE_L1(c) (isSPACE_A(c) \
1168 || (FITS_IN_8_BITS(c) \
1169 && (NATIVE_TO_LATIN1((U8) c) == 0x85 \
1170 || NATIVE_TO_LATIN1((U8) c) == 0xA0)))
1171# define isUPPER_L1(c) (isUPPER_A(c) \
1172 || (FITS_IN_8_BITS(c) \
1173 && (NATIVE_TO_LATIN1((U8) c) >= 0xC0 \
1174 && NATIVE_TO_LATIN1((U8) c) <= 0xDE \
1175 && NATIVE_TO_LATIN1((U8) c) != 0xD7)))
1176# define isWORDCHAR_L1(c) (isIDFIRST_L1(c) || isDIGIT_A(c))
1177# define isIDFIRST_L1(c) (isALPHA_L1(c) || NATIVE_TO_LATIN1(c) == '_')
1178# define isCHARNAME_CONT(c) (isWORDCHAR_L1(c) \
1179 || isBLANK_L1(c) \
1180 || (c) == '-' \
1181 || (c) == '(' \
1182 || (c) == ')')
1183 /* The following are not fully accurate in the above-ASCII range. I (khw)
1184 * don't think it's necessary to be so for the purposes where this gets
1185 * compiled */
1186# define _isQUOTEMETA(c) (FITS_IN_8_BITS(c) && ! isWORDCHAR_L1(c))
1187# define _IS_IN_SOME_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) isALPHA_L1(c)
1188
1189 /* And these aren't accurate at all. They are useful only for above
1190 * Latin1, which utilities and bootstrapping don't deal with */
1191# define _IS_NON_FINAL_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) 0
1192# define _HAS_NONLATIN1_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(c) 0
1193
1194 /* Many of the macros later in this file are defined in terms of these. By
1195 * implementing them with a function, which converts the class number into
1196 * a call to the desired macro, all of the later ones work. However, that
1197 * function won't be actually defined when building a utility program (no
1198 * perl.h), and so a compiler error will be generated if one is attempted
1199 * to be used. And the above-Latin1 code points require Unicode tables to
1200 * be present, something unlikely to be the case when bootstrapping */
1201# define _generic_isCC(c, classnum) \
1202 (FITS_IN_8_BITS(c) && S_bootstrap_ctype((U8) (c), (classnum), TRUE))
1203# define _generic_isCC_A(c, classnum) \
1204 (FITS_IN_8_BITS(c) && S_bootstrap_ctype((U8) (c), (classnum), FALSE))
1205#endif /* End of no perl.h */
1206
1207#define isALPHANUMERIC(c) isALPHANUMERIC_A(c)
1208#define isALPHA(c) isALPHA_A(c)
1209#define isBLANK(c) isBLANK_A(c)
1210#define isCNTRL(c) isCNTRL_A(c)
1211#define isDIGIT(c) isDIGIT_A(c)
1212#define isGRAPH(c) isGRAPH_A(c)
1213#define isIDFIRST(c) isIDFIRST_A(c)
1214#define isLOWER(c) isLOWER_A(c)
1215#define isPRINT(c) isPRINT_A(c)
1216#define isPSXSPC(c) isPSXSPC_A(c)
1217#define isPUNCT(c) isPUNCT_A(c)
1218#define isSPACE(c) isSPACE_A(c)
1219#define isUPPER(c) isUPPER_A(c)
1220#define isWORDCHAR(c) isWORDCHAR_A(c)
1221#define isXDIGIT(c) isXDIGIT_A(c)
1222
1223/* ASCII casing. These could also be written as
1224 #define toLOWER(c) (isASCII(c) ? toLOWER_LATIN1(c) : (c))
1225 #define toUPPER(c) (isASCII(c) ? toUPPER_LATIN1_MOD(c) : (c))
1226 which uses table lookup and mask instead of subtraction. (This would
1227 work because the _MOD does not apply in the ASCII range) */
1228#define toLOWER(c) (isUPPER(c) ? (U8)((c) + ('a' - 'A')) : (c))
1229#define toUPPER(c) (isLOWER(c) ? (U8)((c) - ('a' - 'A')) : (c))
1230
1231/* In the ASCII range, these are equivalent to what they're here defined to be.
1232 * But by creating these definitions, other code doesn't have to be aware of
1233 * this detail */
1234#define toFOLD(c) toLOWER(c)
1235#define toTITLE(c) toUPPER(c)
1236
1237#define toLOWER_A(c) toLOWER(c)
1238#define toUPPER_A(c) toUPPER(c)
1239#define toFOLD_A(c) toFOLD(c)
1240#define toTITLE_A(c) toTITLE(c)
1241
1242/* Use table lookup for speed; returns the input itself if is out-of-range */
1243#define toLOWER_LATIN1(c) ((! FITS_IN_8_BITS(c)) \
1244 ? (c) \
1245 : PL_latin1_lc[ (U8) (c) ])
1246#define toLOWER_L1(c) toLOWER_LATIN1(c) /* Synonym for consistency */
1247
1248/* Modified uc. Is correct uc except for three non-ascii chars which are
1249 * all mapped to one of them, and these need special handling; returns the
1250 * input itself if is out-of-range */
1251#define toUPPER_LATIN1_MOD(c) ((! FITS_IN_8_BITS(c)) \
1252 ? (c) \
1253 : PL_mod_latin1_uc[ (U8) (c) ])
1254#define IN_UTF8_CTYPE_LOCALE PL_in_utf8_CTYPE_locale
1255
1256/* Use foo_LC_uvchr() instead of these for beyond the Latin1 range */
1257
1258/* For internal core Perl use only: the base macro for defining macros like
1259 * isALPHA_LC, which uses the current LC_CTYPE locale. 'c' is the code point
1260 * (0-255) to check. In a UTF-8 locale, the result is the same as calling
1261 * isFOO_L1(); the 'utf8_locale_classnum' parameter is something like
1262 * _CC_UPPER, which gives the class number for doing this. For non-UTF-8
1263 * locales, the code to actually do the test this is passed in 'non_utf8'. If
1264 * 'c' is above 255, 0 is returned. For accessing the full range of possible
1265 * code points under locale rules, use the macros based on _generic_LC_uvchr
1266 * instead of this. */
1267#define _generic_LC_base(c, utf8_locale_classnum, non_utf8) \
1268 (! FITS_IN_8_BITS(c) \
1269 ? 0 \
1270 : IN_UTF8_CTYPE_LOCALE \
1271 ? cBOOL(PL_charclass[(U8) (c)] & _CC_mask(utf8_locale_classnum)) \
1272 : cBOOL(non_utf8))
1273
1274/* For internal core Perl use only: a helper macro for defining macros like
1275 * isALPHA_LC. 'c' is the code point (0-255) to check. The function name to
1276 * actually do this test is passed in 'non_utf8_func', which is called on 'c',
1277 * casting 'c' to the macro _LC_CAST, which should not be parenthesized. See
1278 * _generic_LC_base for more info */
1279#define _generic_LC(c, utf8_locale_classnum, non_utf8_func) \
1280 _generic_LC_base(c,utf8_locale_classnum, \
1281 non_utf8_func( (_LC_CAST) (c)))
1282
1283/* For internal core Perl use only: like _generic_LC, but also returns TRUE if
1284 * 'c' is the platform's native underscore character */
1285#define _generic_LC_underscore(c,utf8_locale_classnum,non_utf8_func) \
1286 _generic_LC_base(c, utf8_locale_classnum, \
1287 (non_utf8_func( (_LC_CAST) (c)) \
1288 || (char)(c) == '_'))
1289
1290/* These next three are also for internal core Perl use only: case-change
1291 * helper macros */
1292#define _generic_toLOWER_LC(c, function, cast) (! FITS_IN_8_BITS(c) \
1293 ? (c) \
1294 : (IN_UTF8_CTYPE_LOCALE) \
1295 ? PL_latin1_lc[ (U8) (c) ] \
1296 : function((cast)(c)))
1297
1298/* Note that the result can be larger than a byte in a UTF-8 locale. It
1299 * returns a single value, so can't adequately return the upper case of LATIN
1300 * SMALL LETTER SHARP S in a UTF-8 locale (which should be a string of two
1301 * values "SS"); instead it asserts against that under DEBUGGING, and
1302 * otherwise returns its input */
1303#define _generic_toUPPER_LC(c, function, cast) \
1304 (! FITS_IN_8_BITS(c) \
1305 ? (c) \
1306 : ((! IN_UTF8_CTYPE_LOCALE) \
1307 ? function((cast)(c)) \
1308 : ((((U8)(c)) == MICRO_SIGN) \
1309 ? GREEK_CAPITAL_LETTER_MU \
1310 : ((((U8)(c)) == LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) \
1311 ? LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS \
1312 : ((((U8)(c)) == LATIN_SMALL_LETTER_SHARP_S) \
1313 ? (__ASSERT_(0) (c)) \
1314 : PL_mod_latin1_uc[ (U8) (c) ])))))
1315
1316/* Note that the result can be larger than a byte in a UTF-8 locale. It
1317 * returns a single value, so can't adequately return the fold case of LATIN
1318 * SMALL LETTER SHARP S in a UTF-8 locale (which should be a string of two
1319 * values "ss"); instead it asserts against that under DEBUGGING, and
1320 * otherwise returns its input */
1321#define _generic_toFOLD_LC(c, function, cast) \
1322 ((UNLIKELY((c) == MICRO_SIGN) && IN_UTF8_CTYPE_LOCALE) \
1323 ? GREEK_SMALL_LETTER_MU \
1324 : (__ASSERT_(! IN_UTF8_CTYPE_LOCALE \
1325 || (c) != LATIN_SMALL_LETTER_SHARP_S) \
1326 _generic_toLOWER_LC(c, function, cast)))
1327
1328/* Use the libc versions for these if available. */
1329#if defined(HAS_ISASCII)
1330# define isASCII_LC(c) (FITS_IN_8_BITS(c) && isascii( (U8) (c)))
1331#else
1332# define isASCII_LC(c) isASCII(c)
1333#endif
1334
1335#if defined(HAS_ISBLANK)
1336# define isBLANK_LC(c) _generic_LC(c, _CC_BLANK, isblank)
1337#else /* Unlike isASCII, varies if in a UTF-8 locale */
1338# define isBLANK_LC(c) (IN_UTF8_CTYPE_LOCALE) ? isBLANK_L1(c) : isBLANK(c)
1339#endif
1340
1341#define _LC_CAST U8
1342
1343#ifdef WIN32
1344 /* The Windows functions don't bother to follow the POSIX standard, which
1345 * for example says that something can't both be a printable and a control.
1346 * But Windows treats the \t control as a printable, and does such things
1347 * as making superscripts into both digits and punctuation. This tames
1348 * these flaws by assuming that the definitions of both controls and space
1349 * are correct, and then making sure that other definitions don't have
1350 * weirdnesses, by making sure that isalnum() isn't also ispunct(), etc.
1351 * Not all possible weirdnesses are checked for, just the ones that were
1352 * detected on actual Microsoft code pages */
1353
1354# define isCNTRL_LC(c) _generic_LC(c, _CC_CNTRL, iscntrl)
1355# define isSPACE_LC(c) _generic_LC(c, _CC_SPACE, isspace)
1356
1357# define isALPHA_LC(c) (_generic_LC(c, _CC_ALPHA, isalpha) && isALPHANUMERIC_LC(c))
1358# define isALPHANUMERIC_LC(c) (_generic_LC(c, _CC_ALPHANUMERIC, isalnum) && ! isPUNCT_LC(c))
1359# define isDIGIT_LC(c) (_generic_LC(c, _CC_DIGIT, isdigit) && isALPHANUMERIC_LC(c))
1360# define isGRAPH_LC(c) (_generic_LC(c, _CC_GRAPH, isgraph) && isPRINT_LC(c))
1361# define isIDFIRST_LC(c) (((c) == '_') || (_generic_LC(c, _CC_IDFIRST, isalpha) && ! isPUNCT_LC(c)))
1362# define isLOWER_LC(c) (_generic_LC(c, _CC_LOWER, islower) && isALPHA_LC(c))
1363# define isPRINT_LC(c) (_generic_LC(c, _CC_PRINT, isprint) && ! isCNTRL_LC(c))
1364# define isPUNCT_LC(c) (_generic_LC(c, _CC_PUNCT, ispunct) && ! isCNTRL_LC(c))
1365# define isUPPER_LC(c) (_generic_LC(c, _CC_UPPER, isupper) && isALPHA_LC(c))
1366# define isWORDCHAR_LC(c) (((c) == '_') || isALPHANUMERIC_LC(c))
1367# define isXDIGIT_LC(c) (_generic_LC(c, _CC_XDIGIT, isxdigit) && isALPHANUMERIC_LC(c))
1368
1369# define toLOWER_LC(c) _generic_toLOWER_LC((c), tolower, U8)
1370# define toUPPER_LC(c) _generic_toUPPER_LC((c), toupper, U8)
1371# define toFOLD_LC(c) _generic_toFOLD_LC((c), tolower, U8)
1372
1373#elif defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
1374 /* For most other platforms */
1375
1376# define isALPHA_LC(c) _generic_LC(c, _CC_ALPHA, isalpha)
1377# define isALPHANUMERIC_LC(c) _generic_LC(c, _CC_ALPHANUMERIC, isalnum)
1378# define isCNTRL_LC(c) _generic_LC(c, _CC_CNTRL, iscntrl)
1379# define isDIGIT_LC(c) _generic_LC(c, _CC_DIGIT, isdigit)
1380# define isGRAPH_LC(c) _generic_LC(c, _CC_GRAPH, isgraph)
1381# define isIDFIRST_LC(c) _generic_LC_underscore(c, _CC_IDFIRST, isalpha)
1382# define isLOWER_LC(c) _generic_LC(c, _CC_LOWER, islower)
1383# define isPRINT_LC(c) _generic_LC(c, _CC_PRINT, isprint)
1384# define isPUNCT_LC(c) _generic_LC(c, _CC_PUNCT, ispunct)
1385# define isSPACE_LC(c) _generic_LC(c, _CC_SPACE, isspace)
1386# define isUPPER_LC(c) _generic_LC(c, _CC_UPPER, isupper)
1387# define isWORDCHAR_LC(c) _generic_LC_underscore(c, _CC_WORDCHAR, isalnum)
1388# define isXDIGIT_LC(c) _generic_LC(c, _CC_XDIGIT, isxdigit)
1389
1390
1391# define toLOWER_LC(c) _generic_toLOWER_LC((c), tolower, U8)
1392# define toUPPER_LC(c) _generic_toUPPER_LC((c), toupper, U8)
1393# define toFOLD_LC(c) _generic_toFOLD_LC((c), tolower, U8)
1394
1395#else /* The final fallback position */
1396
1397# define isALPHA_LC(c) (isascii(c) && isalpha(c))
1398# define isALPHANUMERIC_LC(c) (isascii(c) && isalnum(c))
1399# define isCNTRL_LC(c) (isascii(c) && iscntrl(c))
1400# define isDIGIT_LC(c) (isascii(c) && isdigit(c))
1401# define isGRAPH_LC(c) (isascii(c) && isgraph(c))
1402# define isIDFIRST_LC(c) (isascii(c) && (isalpha(c) || (c) == '_'))
1403# define isLOWER_LC(c) (isascii(c) && islower(c))
1404# define isPRINT_LC(c) (isascii(c) && isprint(c))
1405# define isPUNCT_LC(c) (isascii(c) && ispunct(c))
1406# define isSPACE_LC(c) (isascii(c) && isspace(c))
1407# define isUPPER_LC(c) (isascii(c) && isupper(c))
1408# define isWORDCHAR_LC(c) (isascii(c) && (isalnum(c) || (c) == '_'))
1409# define isXDIGIT_LC(c) (isascii(c) && isxdigit(c))
1410
1411# define toLOWER_LC(c) (isascii(c) ? tolower(c) : (c))
1412# define toUPPER_LC(c) (isascii(c) ? toupper(c) : (c))
1413# define toFOLD_LC(c) (isascii(c) ? tolower(c) : (c))
1414
1415#endif
1416
1417#define isIDCONT(c) isWORDCHAR(c)
1418#define isIDCONT_A(c) isWORDCHAR_A(c)
1419#define isIDCONT_L1(c) isWORDCHAR_L1(c)
1420#define isIDCONT_LC(c) isWORDCHAR_LC(c)
1421#define isPSXSPC_LC(c) isSPACE_LC(c)
1422
1423/* For internal core Perl use only: the base macros for defining macros like
1424 * isALPHA_uni. 'c' is the code point to check. 'classnum' is the POSIX class
1425 * number defined earlier in this file. _generic_uni() is used for POSIX
1426 * classes where there is a macro or function 'above_latin1' that takes the
1427 * single argument 'c' and returns the desired value. These exist for those
1428 * classes which have simple definitions, avoiding the overhead of a hash
1429 * lookup or inversion list binary search. _generic_swash_uni() can be used
1430 * for classes where that overhead is faster than a direct lookup.
1431 * _generic_uni() won't compile if 'c' isn't unsigned, as it won't match the
1432 * 'above_latin1' prototype. _generic_isCC() macro does bounds checking, so
1433 * have duplicate checks here, so could create versions of the macros that
1434 * don't, but experiments show that gcc optimizes them out anyway. */
1435
1436/* Note that all ignore 'use bytes' */
1437#define _generic_uni(classnum, above_latin1, c) ((c) < 256 \
1438 ? _generic_isCC(c, classnum) \
1439 : above_latin1(c))
1440#define _generic_swash_uni(classnum, c) ((c) < 256 \
1441 ? _generic_isCC(c, classnum) \
1442 : _is_uni_FOO(classnum, c))
1443#define isALPHA_uni(c) _generic_swash_uni(_CC_ALPHA, c)
1444#define isALPHANUMERIC_uni(c) _generic_swash_uni(_CC_ALPHANUMERIC, c)
1445#define isASCII_uni(c) isASCII(c)
1446#define isBLANK_uni(c) _generic_uni(_CC_BLANK, is_HORIZWS_cp_high, c)
1447#define isCNTRL_uni(c) isCNTRL_L1(c) /* All controls are in Latin1 */
1448#define isDIGIT_uni(c) _generic_swash_uni(_CC_DIGIT, c)
1449#define isGRAPH_uni(c) _generic_swash_uni(_CC_GRAPH, c)
1450#define isIDCONT_uni(c) _generic_uni(_CC_WORDCHAR, _is_uni_perl_idcont, c)
1451#define isIDFIRST_uni(c) _generic_uni(_CC_IDFIRST, _is_uni_perl_idstart, c)
1452#define isLOWER_uni(c) _generic_swash_uni(_CC_LOWER, c)
1453#define isPRINT_uni(c) _generic_swash_uni(_CC_PRINT, c)
1454
1455/* Posix and regular space are identical above Latin1 */
1456#define isPSXSPC_uni(c) _generic_uni(_CC_PSXSPC, is_XPERLSPACE_cp_high, c)
1457
1458#define isPUNCT_uni(c) _generic_swash_uni(_CC_PUNCT, c)
1459#define isSPACE_uni(c) _generic_uni(_CC_SPACE, is_XPERLSPACE_cp_high, c)
1460#define isUPPER_uni(c) _generic_swash_uni(_CC_UPPER, c)
1461#define isVERTWS_uni(c) _generic_uni(_CC_VERTSPACE, is_VERTWS_cp_high, c)
1462#define isWORDCHAR_uni(c) _generic_swash_uni(_CC_WORDCHAR, c)
1463#define isXDIGIT_uni(c) _generic_uni(_CC_XDIGIT, is_XDIGIT_cp_high, c)
1464
1465#define toFOLD_uni(c,s,l) to_uni_fold(c,s,l)
1466#define toLOWER_uni(c,s,l) to_uni_lower(c,s,l)
1467#define toTITLE_uni(c,s,l) to_uni_title(c,s,l)
1468#define toUPPER_uni(c,s,l) to_uni_upper(c,s,l)
1469
1470/* For internal core Perl use only: the base macros for defining macros like
1471 * isALPHA_LC_uvchr. These are like isALPHA_LC, but the input can be any code
1472 * point, not just 0-255. Like _generic_uni, there are two versions, one for
1473 * simple class definitions; the other for more complex. These are like
1474 * _generic_uni, so see it for more info. */
1475#define _generic_LC_uvchr(latin1, above_latin1, c) \
1476 (c < 256 ? latin1(c) : above_latin1(c))
1477#define _generic_LC_swash_uvchr(latin1, classnum, c) \
1478 (c < 256 ? latin1(c) : _is_uni_FOO(classnum, c))
1479
1480#define isALPHA_LC_uvchr(c) _generic_LC_swash_uvchr(isALPHA_LC, _CC_ALPHA, c)
1481#define isALPHANUMERIC_LC_uvchr(c) _generic_LC_swash_uvchr(isALPHANUMERIC_LC, \
1482 _CC_ALPHANUMERIC, c)
1483#define isASCII_LC_uvchr(c) isASCII_LC(c)
1484#define isBLANK_LC_uvchr(c) _generic_LC_uvchr(isBLANK_LC, is_HORIZWS_cp_high, c)
1485#define isCNTRL_LC_uvchr(c) (c < 256 ? isCNTRL_LC(c) : 0)
1486#define isDIGIT_LC_uvchr(c) _generic_LC_swash_uvchr(isDIGIT_LC, _CC_DIGIT, c)
1487#define isGRAPH_LC_uvchr(c) _generic_LC_swash_uvchr(isGRAPH_LC, _CC_GRAPH, c)
1488#define isIDCONT_LC_uvchr(c) _generic_LC_uvchr(isIDCONT_LC, \
1489 _is_uni_perl_idcont, c)
1490#define isIDFIRST_LC_uvchr(c) _generic_LC_uvchr(isIDFIRST_LC, \
1491 _is_uni_perl_idstart, c)
1492#define isLOWER_LC_uvchr(c) _generic_LC_swash_uvchr(isLOWER_LC, _CC_LOWER, c)
1493#define isPRINT_LC_uvchr(c) _generic_LC_swash_uvchr(isPRINT_LC, _CC_PRINT, c)
1494#define isPSXSPC_LC_uvchr(c) isSPACE_LC_uvchr(c) /* space is identical to posix
1495 space under locale */
1496#define isPUNCT_LC_uvchr(c) _generic_LC_swash_uvchr(isPUNCT_LC, _CC_PUNCT, c)
1497#define isSPACE_LC_uvchr(c) _generic_LC_uvchr(isSPACE_LC, \
1498 is_XPERLSPACE_cp_high, c)
1499#define isUPPER_LC_uvchr(c) _generic_LC_swash_uvchr(isUPPER_LC, _CC_UPPER, c)
1500#define isWORDCHAR_LC_uvchr(c) _generic_LC_swash_uvchr(isWORDCHAR_LC, \
1501 _CC_WORDCHAR, c)
1502#define isXDIGIT_LC_uvchr(c) _generic_LC_uvchr(isXDIGIT_LC, is_XDIGIT_cp_high, c)
1503
1504#define isBLANK_LC_uni(c) isBLANK_LC_uvchr(UNI_TO_NATIVE(c))
1505
1506/* For internal core Perl use only: the base macros for defining macros like
1507 * isALPHA_utf8. These are like the earlier defined macros, but take an input
1508 * UTF-8 encoded string 'p'. If the input is in the Latin1 range, use
1509 * the Latin1 macro 'classnum' on 'p'. Otherwise use the value given by the
1510 * 'utf8' parameter. This relies on the fact that ASCII characters have the
1511 * same representation whether utf8 or not. Note that it assumes that the utf8
1512 * has been validated, and ignores 'use bytes' */
1513#define _generic_utf8(classnum, p, utf8) (UTF8_IS_INVARIANT(*(p)) \
1514 ? _generic_isCC(*(p), classnum) \
1515 : (UTF8_IS_DOWNGRADEABLE_START(*(p))) \
1516 ? _generic_isCC( \
1517 TWO_BYTE_UTF8_TO_NATIVE(*(p), \
1518 *((p)+1 )), \
1519 classnum) \
1520 : utf8)
1521/* Like the above, but calls 'above_latin1(p)' to get the utf8 value. 'above_latin1'
1522 * can be a macro */
1523#define _generic_func_utf8(classnum, above_latin1, p) \
1524 _generic_utf8(classnum, p, above_latin1(p))
1525/* Like the above, but passes classnum to _isFOO_utf8(), instead of having an
1526 * 'above_latin1' parameter */
1527#define _generic_swash_utf8(classnum, p) \
1528 _generic_utf8(classnum, p, _is_utf8_FOO(classnum, p))
1529
1530/* Like the above, but should be used only when it is known that there are no
1531 * characters in the upper-Latin1 range (128-255 on ASCII platforms) which the
1532 * class is TRUE for. Hence it can skip the tests for this range.
1533 * 'above_latin1' should include its arguments */
1534#define _generic_utf8_no_upper_latin1(classnum, p, above_latin1) \
1535 (UTF8_IS_INVARIANT(*(p)) \
1536 ? _generic_isCC(*(p), classnum) \
1537 : (UTF8_IS_ABOVE_LATIN1(*(p))) \
1538 ? above_latin1 \
1539 : 0)
1540
1541/* NOTE that some of these macros have very similar ones in regcharclass.h.
1542 * For example, there is (at the time of this writing) an 'is_SPACE_utf8()'
1543 * there, differing in name only by an underscore from the one here
1544 * 'isSPACE_utf8(). The difference is that the ones here are probably more
1545 * efficient and smaller, using an O(1) array lookup for Latin1-range code
1546 * points; the regcharclass.h ones are implemented as a series of
1547 * "if-else-if-else ..." */
1548
1549#define isALPHA_utf8(p) _generic_swash_utf8(_CC_ALPHA, p)
1550#define isALPHANUMERIC_utf8(p) _generic_swash_utf8(_CC_ALPHANUMERIC, p)
1551#define isASCII_utf8(p) isASCII(*p) /* Because ASCII is invariant under
1552 utf8, the non-utf8 macro works
1553 */
1554#define isBLANK_utf8(p) _generic_func_utf8(_CC_BLANK, is_HORIZWS_high, p)
1555
1556#ifdef EBCDIC
1557 /* Because all controls are UTF-8 invariants in EBCDIC, we can use this
1558 * more efficient macro instead of the more general one */
1559# define isCNTRL_utf8(p) isCNTRL_L1(p)
1560#else
1561# define isCNTRL_utf8(p) _generic_utf8(_CC_CNTRL, p, 0)
1562#endif
1563
1564#define isDIGIT_utf8(p) _generic_utf8_no_upper_latin1(_CC_DIGIT, p, \
1565 _is_utf8_FOO(_CC_DIGIT, p))
1566#define isGRAPH_utf8(p) _generic_swash_utf8(_CC_GRAPH, p)
1567#define isIDCONT_utf8(p) _generic_func_utf8(_CC_WORDCHAR, \
1568 _is_utf8_perl_idcont, p)
1569
1570/* To prevent S_scan_word in toke.c from hanging, we have to make sure that
1571 * IDFIRST is an alnum. See
1572 * http://rt.perl.org/rt3/Ticket/Display.html?id=74022 for more detail than you
1573 * ever wanted to know about. (In the ASCII range, there isn't a difference.)
1574 * This used to be not the XID version, but we decided to go with the more
1575 * modern Unicode definition */
1576#define isIDFIRST_utf8(p) _generic_func_utf8(_CC_IDFIRST, \
1577 _is_utf8_perl_idstart, p)
1578
1579#define isLOWER_utf8(p) _generic_swash_utf8(_CC_LOWER, p)
1580#define isPRINT_utf8(p) _generic_swash_utf8(_CC_PRINT, p)
1581
1582/* Posix and regular space are identical above Latin1 */
1583#define isPSXSPC_utf8(p) _generic_func_utf8(_CC_PSXSPC, is_XPERLSPACE_high, p)
1584
1585#define isPUNCT_utf8(p) _generic_swash_utf8(_CC_PUNCT, p)
1586#define isSPACE_utf8(p) _generic_func_utf8(_CC_SPACE, is_XPERLSPACE_high, p)
1587#define isUPPER_utf8(p) _generic_swash_utf8(_CC_UPPER, p)
1588#define isVERTWS_utf8(p) _generic_func_utf8(_CC_VERTSPACE, is_VERTWS_high, p)
1589#define isWORDCHAR_utf8(p) _generic_swash_utf8(_CC_WORDCHAR, p)
1590#define isXDIGIT_utf8(p) _generic_utf8_no_upper_latin1(_CC_XDIGIT, p, \
1591 is_XDIGIT_high(p))
1592
1593#define toFOLD_utf8(p,s,l) to_utf8_fold(p,s,l)
1594#define toLOWER_utf8(p,s,l) to_utf8_lower(p,s,l)
1595#define toTITLE_utf8(p,s,l) to_utf8_title(p,s,l)
1596#define toUPPER_utf8(p,s,l) to_utf8_upper(p,s,l)
1597
1598/* For internal core Perl use only: the base macros for defining macros like
1599 * isALPHA_LC_utf8. These are like _generic_utf8, but if the first code point
1600 * in 'p' is within the 0-255 range, it uses locale rules from the passed-in
1601 * 'macro' parameter */
1602#define _generic_LC_utf8(macro, p, utf8) \
1603 (UTF8_IS_INVARIANT(*(p)) \
1604 ? macro(*(p)) \
1605 : (UTF8_IS_DOWNGRADEABLE_START(*(p))) \
1606 ? macro(TWO_BYTE_UTF8_TO_NATIVE(*(p), *((p)+1))) \
1607 : utf8)
1608
1609#define _generic_LC_swash_utf8(macro, classnum, p) \
1610 _generic_LC_utf8(macro, p, _is_utf8_FOO(classnum, p))
1611#define _generic_LC_func_utf8(macro, above_latin1, p) \
1612 _generic_LC_utf8(macro, p, above_latin1(p))
1613
1614#define isALPHANUMERIC_LC_utf8(p) _generic_LC_swash_utf8(isALPHANUMERIC_LC, \
1615 _CC_ALPHANUMERIC, p)
1616#define isALPHA_LC_utf8(p) _generic_LC_swash_utf8(isALPHA_LC, _CC_ALPHA, p)
1617#define isASCII_LC_utf8(p) isASCII_LC(*p)
1618#define isBLANK_LC_utf8(p) _generic_LC_func_utf8(isBLANK_LC, is_HORIZWS_high, p)
1619#define isCNTRL_LC_utf8(p) _generic_LC_utf8(isCNTRL_LC, p, 0)
1620#define isDIGIT_LC_utf8(p) _generic_LC_swash_utf8(isDIGIT_LC, _CC_DIGIT, p)
1621#define isGRAPH_LC_utf8(p) _generic_LC_swash_utf8(isGRAPH_LC, _CC_GRAPH, p)
1622#define isIDCONT_LC_utf8(p) _generic_LC_func_utf8(isIDCONT_LC, _is_utf8_perl_idcont, p)
1623#define isIDFIRST_LC_utf8(p) _generic_LC_func_utf8(isIDFIRST_LC, _is_utf8_perl_idstart, p)
1624#define isLOWER_LC_utf8(p) _generic_LC_swash_utf8(isLOWER_LC, _CC_LOWER, p)
1625#define isPRINT_LC_utf8(p) _generic_LC_swash_utf8(isPRINT_LC, _CC_PRINT, p)
1626#define isPSXSPC_LC_utf8(p) isSPACE_LC_utf8(p) /* space is identical to posix
1627 space under locale */
1628#define isPUNCT_LC_utf8(p) _generic_LC_swash_utf8(isPUNCT_LC, _CC_PUNCT, p)
1629#define isSPACE_LC_utf8(p) _generic_LC_func_utf8(isSPACE_LC, is_XPERLSPACE_high, p)
1630#define isUPPER_LC_utf8(p) _generic_LC_swash_utf8(isUPPER_LC, _CC_UPPER, p)
1631#define isWORDCHAR_LC_utf8(p) _generic_LC_swash_utf8(isWORDCHAR_LC, \
1632 _CC_WORDCHAR, p)
1633#define isXDIGIT_LC_utf8(p) _generic_LC_func_utf8(isXDIGIT_LC, is_XDIGIT_high, p)
1634
1635/* Macros for backwards compatibility and for completeness when the ASCII and
1636 * Latin1 values are identical */
1637#define isALPHAU(c) isALPHA_L1(c)
1638#define isDIGIT_L1(c) isDIGIT_A(c)
1639#define isOCTAL(c) isOCTAL_A(c)
1640#define isOCTAL_L1(c) isOCTAL_A(c)
1641#define isXDIGIT_L1(c) isXDIGIT_A(c)
1642#define isALNUM(c) isWORDCHAR(c)
1643#define isALNUMU(c) isWORDCHAR_L1(c)
1644#define isALNUM_LC(c) isWORDCHAR_LC(c)
1645#define isALNUM_uni(c) isWORDCHAR_uni(c)
1646#define isALNUM_LC_uvchr(c) isWORDCHAR_LC_uvchr(c)
1647#define isALNUM_utf8(p) isWORDCHAR_utf8(p)
1648#define isALNUM_LC_utf8(p) isWORDCHAR_LC_utf8(p)
1649#define isALNUMC_A(c) isALPHANUMERIC_A(c) /* Mnemonic: "C's alnum" */
1650#define isALNUMC_L1(c) isALPHANUMERIC_L1(c)
1651#define isALNUMC(c) isALPHANUMERIC(c)
1652#define isALNUMC_LC(c) isALPHANUMERIC_LC(c)
1653#define isALNUMC_uni(c) isALPHANUMERIC_uni(c)
1654#define isALNUMC_LC_uvchr(c) isALPHANUMERIC_LC_uvchr(c)
1655#define isALNUMC_utf8(p) isALPHANUMERIC_utf8(p)
1656#define isALNUMC_LC_utf8(p) isALPHANUMERIC_LC_utf8(p)
1657
1658/* On EBCDIC platforms, CTRL-@ is 0, CTRL-A is 1, etc, just like on ASCII,
1659 * except that they don't necessarily mean the same characters, e.g. CTRL-D is
1660 * 4 on both systems, but that is EOT on ASCII; ST on EBCDIC.
1661 * '?' is special-cased on EBCDIC to APC, which is the control there that is
1662 * the outlier from the block that contains the other controls, just like
1663 * toCTRL('?') on ASCII yields DEL, the control that is the outlier from the C0
1664 * block. If it weren't special cased, it would yield a non-control.
1665 * The conversion works both ways, so CTRL('D') is 4, and CTRL(4) is D, etc. */
1666#ifndef EBCDIC
1667# define toCTRL(c) (toUPPER(c) ^ 64)
1668#else
1669# define toCTRL(c) ((isPRINT_A(c)) \
1670 ? UNLIKELY((c) == '?') \
1671 ? QUESTION_MARK_CTRL \
1672 : (NATIVE_TO_LATIN1(toUPPER(c)) ^ 64) \
1673 : UNLIKELY((c) == QUESTION_MARK_CTRL) \
1674 ? ((c) == '?') \
1675 : (LATIN1_TO_NATIVE((c) ^ 64)))
1676#endif
1677
1678/* Line numbers are unsigned, 32 bits. */
1679typedef U32 line_t;
1680#define NOLINE ((line_t) 4294967295UL) /* = FFFFFFFF */
1681
1682/* Helpful alias for version prescan */
1683#define is_LAX_VERSION(a,b) \
1684 (a != Perl_prescan_version(aTHX_ a, FALSE, b, NULL, NULL, NULL, NULL))
1685
1686#define is_STRICT_VERSION(a,b) \
1687 (a != Perl_prescan_version(aTHX_ a, TRUE, b, NULL, NULL, NULL, NULL))
1688
1689#define BADVERSION(a,b,c) \
1690 if (b) { \
1691 *b = c; \
1692 } \
1693 return a;
1694
1695/* Converts a character known to represent a hexadecimal digit (0-9, A-F, or
1696 * a-f) to its numeric value. READ_XDIGIT's argument is a string pointer,
1697 * which is advanced. The input is validated only by an assert() in DEBUGGING
1698 * builds. In both ASCII and EBCDIC the last 4 bits of the digits are 0-9; and
1699 * the last 4 bits of A-F and a-f are 1-6, so adding 9 yields 10-15 */
1700#define XDIGIT_VALUE(c) (__ASSERT_(isXDIGIT(c)) (0xf & (isDIGIT(c) \
1701 ? (c) \
1702 : ((c) + 9))))
1703#define READ_XDIGIT(s) (__ASSERT_(isXDIGIT(*s)) (0xf & (isDIGIT(*(s)) \
1704 ? (*(s)++) \
1705 : (*(s)++ + 9))))
1706
1707/* Converts a character known to represent an octal digit (0-7) to its numeric
1708 * value. The input is validated only by an assert() in DEBUGGING builds. In
1709 * both ASCII and EBCDIC the last 3 bits of the octal digits range from 0-7. */
1710#define OCTAL_VALUE(c) (__ASSERT_(isOCTAL(c)) (7 & (c)))
1711
1712/* Efficiently returns a boolean as to if two native characters are equivalent
1713 * case-insenstively. At least one of the characters must be one of [A-Za-z];
1714 * the ALPHA in the name is to remind you of that. This is asserted() in
1715 * DEBUGGING builds. Because [A-Za-z] are invariant under UTF-8, this macro
1716 * works (on valid input) for both non- and UTF-8-encoded bytes.
1717 *
1718 * When one of the inputs is a compile-time constant and gets folded by the
1719 * compiler, this reduces to an AND and a TEST. On both EBCDIC and ASCII
1720 * machines, 'A' and 'a' differ by a single bit; the same with the upper and
1721 * lower case of all other ASCII-range alphabetics. On ASCII platforms, they
1722 * are 32 apart; on EBCDIC, they are 64. At compile time, this uses an
1723 * exclusive 'or' to find that bit and then inverts it to form a mask, with
1724 * just a single 0, in the bit position where the upper- and lowercase differ.
1725 * */
1726#define isALPHA_FOLD_EQ(c1, c2) \
1727 (__ASSERT_(isALPHA_A(c1) || isALPHA_A(c2)) \
1728 ((c1) & ~('A' ^ 'a')) == ((c2) & ~('A' ^ 'a')))
1729#define isALPHA_FOLD_NE(c1, c2) (! isALPHA_FOLD_EQ((c1), (c2)))
1730
1731/*
1732=head1 Memory Management
1733
1734=for apidoc Am|void|Newx|void* ptr|int nitems|type
1735The XSUB-writer's interface to the C C<malloc> function.
1736
1737Memory obtained by this should B<ONLY> be freed with L<"Safefree">.
1738
1739In 5.9.3, Newx() and friends replace the older New() API, and drops
1740the first parameter, I<x>, a debug aid which allowed callers to identify
1741themselves. This aid has been superseded by a new build option,
1742PERL_MEM_LOG (see L<perlhacktips/PERL_MEM_LOG>). The older API is still
1743there for use in XS modules supporting older perls.
1744
1745=for apidoc Am|void|Newxc|void* ptr|int nitems|type|cast
1746The XSUB-writer's interface to the C C<malloc> function, with
1747cast. See also C<Newx>.
1748
1749Memory obtained by this should B<ONLY> be freed with L<"Safefree">.
1750
1751=for apidoc Am|void|Newxz|void* ptr|int nitems|type
1752The XSUB-writer's interface to the C C<malloc> function. The allocated
1753memory is zeroed with C<memzero>. See also C<Newx>.
1754
1755Memory obtained by this should B<ONLY> be freed with L<"Safefree">.
1756
1757=for apidoc Am|void|Renew|void* ptr|int nitems|type
1758The XSUB-writer's interface to the C C<realloc> function.
1759
1760Memory obtained by this should B<ONLY> be freed with L<"Safefree">.
1761
1762=for apidoc Am|void|Renewc|void* ptr|int nitems|type|cast
1763The XSUB-writer's interface to the C C<realloc> function, with
1764cast.
1765
1766Memory obtained by this should B<ONLY> be freed with L<"Safefree">.
1767
1768=for apidoc Am|void|Safefree|void* ptr
1769The XSUB-writer's interface to the C C<free> function.
1770
1771This should B<ONLY> be used on memory obtained using L<"Newx"> and friends.
1772
1773=for apidoc Am|void|Move|void* src|void* dest|int nitems|type
1774The XSUB-writer's interface to the C C<memmove> function. The C<src> is the
1775source, C<dest> is the destination, C<nitems> is the number of items, and
1776C<type> is the type. Can do overlapping moves. See also C<Copy>.
1777
1778=for apidoc Am|void *|MoveD|void* src|void* dest|int nitems|type
1779Like C<Move> but returns dest. Useful
1780for encouraging compilers to tail-call
1781optimise.
1782
1783=for apidoc Am|void|Copy|void* src|void* dest|int nitems|type
1784The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the
1785source, C<dest> is the destination, C<nitems> is the number of items, and
1786C<type> is the type. May fail on overlapping copies. See also C<Move>.
1787
1788=for apidoc Am|void *|CopyD|void* src|void* dest|int nitems|type
1789
1790Like C<Copy> but returns dest. Useful
1791for encouraging compilers to tail-call
1792optimise.
1793
1794=for apidoc Am|void|Zero|void* dest|int nitems|type
1795
1796The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the
1797destination, C<nitems> is the number of items, and C<type> is the type.
1798
1799=for apidoc Am|void *|ZeroD|void* dest|int nitems|type
1800
1801Like C<Zero> but returns dest. Useful
1802for encouraging compilers to tail-call
1803optimise.
1804
1805=for apidoc Am|void|StructCopy|type *src|type *dest|type
1806This is an architecture-independent macro to copy one structure to another.
1807
1808=for apidoc Am|void|PoisonWith|void* dest|int nitems|type|U8 byte
1809
1810Fill up memory with a byte pattern (a byte repeated over and over
1811again) that hopefully catches attempts to access uninitialized memory.
1812
1813=for apidoc Am|void|PoisonNew|void* dest|int nitems|type
1814
1815PoisonWith(0xAB) for catching access to allocated but uninitialized memory.
1816
1817=for apidoc Am|void|PoisonFree|void* dest|int nitems|type
1818
1819PoisonWith(0xEF) for catching access to freed memory.
1820
1821=for apidoc Am|void|Poison|void* dest|int nitems|type
1822
1823PoisonWith(0xEF) for catching access to freed memory.
1824
1825=cut */
1826
1827/* Maintained for backwards-compatibility only. Use newSV() instead. */
1828#ifndef PERL_CORE
1829#define NEWSV(x,len) newSV(len)
1830#endif
1831
1832#define MEM_SIZE_MAX ((MEM_SIZE)~0)
1833
1834/* The +0.0 in MEM_WRAP_CHECK_ is an attempt to foil
1835 * overly eager compilers that will bleat about e.g.
1836 * (U16)n > (size_t)~0/sizeof(U16) always being false. */
1837#ifdef PERL_MALLOC_WRAP
1838#define MEM_WRAP_CHECK(n,t) \
1839 (void)(UNLIKELY(sizeof(t) > 1 && ((MEM_SIZE)(n)+0.0) > MEM_SIZE_MAX/sizeof(t)) && (croak_memory_wrap(),0))
1840#define MEM_WRAP_CHECK_1(n,t,a) \
1841 (void)(UNLIKELY(sizeof(t) > 1 && ((MEM_SIZE)(n)+0.0) > MEM_SIZE_MAX/sizeof(t)) && (Perl_croak_nocontext("%s",(a)),0))
1842#define MEM_WRAP_CHECK_(n,t) MEM_WRAP_CHECK(n,t),
1843
1844#define PERL_STRLEN_ROUNDUP(n) ((void)(((n) > MEM_SIZE_MAX - 2 * PERL_STRLEN_ROUNDUP_QUANTUM) ? (croak_memory_wrap(),0):0),((n-1+PERL_STRLEN_ROUNDUP_QUANTUM)&~((MEM_SIZE)PERL_STRLEN_ROUNDUP_QUANTUM-1)))
1845#else
1846
1847#define MEM_WRAP_CHECK(n,t)
1848#define MEM_WRAP_CHECK_1(n,t,a)
1849#define MEM_WRAP_CHECK_2(n,t,a,b)
1850#define MEM_WRAP_CHECK_(n,t)
1851
1852#define PERL_STRLEN_ROUNDUP(n) (((n-1+PERL_STRLEN_ROUNDUP_QUANTUM)&~((MEM_SIZE)PERL_STRLEN_ROUNDUP_QUANTUM-1)))
1853
1854#endif
1855
1856#ifdef PERL_MEM_LOG
1857/*
1858 * If PERL_MEM_LOG is defined, all Newx()s, Renew()s, and Safefree()s
1859 * go through functions, which are handy for debugging breakpoints, but
1860 * which more importantly get the immediate calling environment (file and
1861 * line number, and C function name if available) passed in. This info can
1862 * then be used for logging the calls, for which one gets a sample
1863 * implementation unless -DPERL_MEM_LOG_NOIMPL is also defined.
1864 *
1865 * Known problems:
1866 * - not all memory allocs get logged, only those
1867 * that go through Newx() and derivatives (while all
1868 * Safefrees do get logged)
1869 * - __FILE__ and __LINE__ do not work everywhere
1870 * - __func__ or __FUNCTION__ even less so
1871 * - I think more goes on after the perlio frees but
1872 * the thing is that STDERR gets closed (as do all
1873 * the file descriptors)
1874 * - no deeper calling stack than the caller of the Newx()
1875 * or the kind, but do I look like a C reflection/introspection
1876 * utility to you?
1877 * - the function prototypes for the logging functions
1878 * probably should maybe be somewhere else than handy.h
1879 * - one could consider inlining (macrofying) the logging
1880 * for speed, but I am too lazy
1881 * - one could imagine recording the allocations in a hash,
1882 * (keyed by the allocation address?), and maintain that
1883 * through reallocs and frees, but how to do that without
1884 * any News() happening...?
1885 * - lots of -Ddefines to get useful/controllable output
1886 * - lots of ENV reads
1887 */
1888
1889PERL_EXPORT_C Malloc_t Perl_mem_log_alloc(const UV n, const UV typesize, const char *type_name, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname);
1890
1891PERL_EXPORT_C Malloc_t Perl_mem_log_realloc(const UV n, const UV typesize, const char *type_name, Malloc_t oldalloc, Malloc_t newalloc, const char *filename, const int linenumber, const char *funcname);
1892
1893PERL_EXPORT_C Malloc_t Perl_mem_log_free(Malloc_t oldalloc, const char *filename, const int linenumber, const char *funcname);
1894
1895# ifdef PERL_CORE
1896# ifndef PERL_MEM_LOG_NOIMPL
1897enum mem_log_type {
1898 MLT_ALLOC,
1899 MLT_REALLOC,
1900 MLT_FREE,
1901 MLT_NEW_SV,
1902 MLT_DEL_SV
1903};
1904# endif
1905# if defined(PERL_IN_SV_C) /* those are only used in sv.c */
1906void Perl_mem_log_new_sv(const SV *sv, const char *filename, const int linenumber, const char *funcname);
1907void Perl_mem_log_del_sv(const SV *sv, const char *filename, const int linenumber, const char *funcname);
1908# endif
1909# endif
1910
1911#endif
1912
1913#ifdef PERL_MEM_LOG
1914#define MEM_LOG_ALLOC(n,t,a) Perl_mem_log_alloc(n,sizeof(t),STRINGIFY(t),a,__FILE__,__LINE__,FUNCTION__)
1915#define MEM_LOG_REALLOC(n,t,v,a) Perl_mem_log_realloc(n,sizeof(t),STRINGIFY(t),v,a,__FILE__,__LINE__,FUNCTION__)
1916#define MEM_LOG_FREE(a) Perl_mem_log_free(a,__FILE__,__LINE__,FUNCTION__)
1917#endif
1918
1919#ifndef MEM_LOG_ALLOC
1920#define MEM_LOG_ALLOC(n,t,a) (a)
1921#endif
1922#ifndef MEM_LOG_REALLOC
1923#define MEM_LOG_REALLOC(n,t,v,a) (a)
1924#endif
1925#ifndef MEM_LOG_FREE
1926#define MEM_LOG_FREE(a) (a)
1927#endif
1928
1929#define Newx(v,n,t) (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_ALLOC(n,t,safemalloc((MEM_SIZE)((n)*sizeof(t))))))
1930#define Newxc(v,n,t,c) (v = (MEM_WRAP_CHECK_(n,t) (c*)MEM_LOG_ALLOC(n,t,safemalloc((MEM_SIZE)((n)*sizeof(t))))))
1931#define Newxz(v,n,t) (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_ALLOC(n,t,safecalloc((n),sizeof(t)))))
1932
1933#ifndef PERL_CORE
1934/* pre 5.9.x compatibility */
1935#define New(x,v,n,t) Newx(v,n,t)
1936#define Newc(x,v,n,t,c) Newxc(v,n,t,c)
1937#define Newz(x,v,n,t) Newxz(v,n,t)
1938#endif
1939
1940#define Renew(v,n,t) \
1941 (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_REALLOC(n,t,v,saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))))
1942#define Renewc(v,n,t,c) \
1943 (v = (MEM_WRAP_CHECK_(n,t) (c*)MEM_LOG_REALLOC(n,t,v,saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))))
1944
1945#ifdef PERL_POISON
1946#define Safefree(d) \
1947 ((d) ? (void)(safefree(MEM_LOG_FREE((Malloc_t)(d))), Poison(&(d), 1, Malloc_t)) : (void) 0)
1948#else
1949#define Safefree(d) safefree(MEM_LOG_FREE((Malloc_t)(d)))
1950#endif
1951
1952#define Move(s,d,n,t) (MEM_WRAP_CHECK_(n,t) (void)memmove((char*)(d),(const char*)(s), (n) * sizeof(t)))
1953#define Copy(s,d,n,t) (MEM_WRAP_CHECK_(n,t) (void)memcpy((char*)(d),(const char*)(s), (n) * sizeof(t)))
1954#define Zero(d,n,t) (MEM_WRAP_CHECK_(n,t) (void)memzero((char*)(d), (n) * sizeof(t)))
1955
1956#define MoveD(s,d,n,t) (MEM_WRAP_CHECK_(n,t) memmove((char*)(d),(const char*)(s), (n) * sizeof(t)))
1957#define CopyD(s,d,n,t) (MEM_WRAP_CHECK_(n,t) memcpy((char*)(d),(const char*)(s), (n) * sizeof(t)))
1958#ifdef HAS_MEMSET
1959#define ZeroD(d,n,t) (MEM_WRAP_CHECK_(n,t) memzero((char*)(d), (n) * sizeof(t)))
1960#else
1961/* Using bzero(), which returns void. */
1962#define ZeroD(d,n,t) (MEM_WRAP_CHECK_(n,t) memzero((char*)(d), (n) * sizeof(t)),d)
1963#endif
1964
1965#define PoisonWith(d,n,t,b) (MEM_WRAP_CHECK_(n,t) (void)memset((char*)(d), (U8)(b), (n) * sizeof(t)))
1966#define PoisonNew(d,n,t) PoisonWith(d,n,t,0xAB)
1967#define PoisonFree(d,n,t) PoisonWith(d,n,t,0xEF)
1968#define Poison(d,n,t) PoisonFree(d,n,t)
1969
1970#ifdef PERL_POISON
1971# define PERL_POISON_EXPR(x) x
1972#else
1973# define PERL_POISON_EXPR(x)
1974#endif
1975
1976#ifdef USE_STRUCT_COPY
1977#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
1978#else
1979#define StructCopy(s,d,t) Copy(s,d,1,t)
1980#endif
1981
1982/* C_ARRAY_LENGTH is the number of elements in the C array (so you
1983 * want your zero-based indices to be less than but not equal to).
1984 *
1985 * C_ARRAY_END is one past the last: half-open/half-closed range,
1986 * not last-inclusive range. */
1987#define C_ARRAY_LENGTH(a) (sizeof(a)/sizeof((a)[0]))
1988#define C_ARRAY_END(a) ((a) + C_ARRAY_LENGTH(a))
1989
1990#ifdef NEED_VA_COPY
1991# ifdef va_copy
1992# define Perl_va_copy(s, d) va_copy(d, s)
1993# else
1994# if defined(__va_copy)
1995# define Perl_va_copy(s, d) __va_copy(d, s)
1996# else
1997# define Perl_va_copy(s, d) Copy(s, d, 1, va_list)
1998# endif
1999# endif
2000#endif
2001
2002/* convenience debug macros */
2003#ifdef USE_ITHREADS
2004#define pTHX_FORMAT "Perl interpreter: 0x%p"
2005#define pTHX__FORMAT ", Perl interpreter: 0x%p"
2006#define pTHX_VALUE_ (void *)my_perl,
2007#define pTHX_VALUE (void *)my_perl
2008#define pTHX__VALUE_ ,(void *)my_perl,
2009#define pTHX__VALUE ,(void *)my_perl
2010#else
2011#define pTHX_FORMAT
2012#define pTHX__FORMAT
2013#define pTHX_VALUE_
2014#define pTHX_VALUE
2015#define pTHX__VALUE_
2016#define pTHX__VALUE
2017#endif /* USE_ITHREADS */
2018
2019/* Perl_deprecate was not part of the public API, and did not have a deprecate()
2020 shortcut macro defined without -DPERL_CORE. Neither codesearch.google.com nor
2021 CPAN::Unpack show any users outside the core. */
2022#ifdef PERL_CORE
2023# define deprecate(s) Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), "Use of " s " is deprecated")
2024#endif
2025
2026/* Internal macros to deal with gids and uids */
2027#ifdef PERL_CORE
2028
2029# if Uid_t_size > IVSIZE
2030# define sv_setuid(sv, uid) sv_setnv((sv), (NV)(uid))
2031# define SvUID(sv) SvNV(sv)
2032# else
2033# if Uid_t_sign <= 0
2034# define sv_setuid(sv, uid) sv_setiv((sv), (IV)(uid))
2035# define SvUID(sv) SvIV(sv)
2036# else
2037# define sv_setuid(sv, uid) sv_setuv((sv), (UV)(uid))
2038# define SvUID(sv) SvUV(sv)
2039# endif
2040# endif /* Uid_t_size */
2041
2042# if Gid_t_size > IVSIZE
2043# define sv_setgid(sv, gid) sv_setnv((sv), (NV)(gid))
2044# define SvGID(sv) SvNV(sv)
2045# else
2046# if Gid_t_sign <= 0
2047# define sv_setgid(sv, gid) sv_setiv((sv), (IV)(gid))
2048# define SvGID(sv) SvIV(sv)
2049# else
2050# define sv_setgid(sv, gid) sv_setuv((sv), (UV)(gid))
2051# define SvGID(sv) SvUV(sv)
2052# endif
2053# endif /* Gid_t_size */
2054
2055#endif
2056
2057#endif /* HANDY_H */
2058
2059/*
2060 * Local variables:
2061 * c-indentation-style: bsd
2062 * c-basic-offset: 4
2063 * indent-tabs-mode: nil
2064 * End:
2065 *
2066 * ex: set ts=8 sts=4 sw=4 et:
2067 */
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