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Change pod for macros that require "literal strings"
[perl5.git] / handy.h
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a0d0e21e 1/* handy.h
a687059c 2 *
1129b882 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000,
da5d8dbb 4 * 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2012 by Larry Wall and others
a687059c 5 *
6e21c824
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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.
8d063cd8 8 *
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9 */
10
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11/* IMPORTANT NOTE: Everything whose name begins with an underscore is for
12 * internal core Perl use only. */
13
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14#ifndef PERL_HANDY_H_ /* Guard against nested #inclusion */
15#define PERL_HANDY_H_
9d745869 16
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17#ifndef PERL_CORE
18# define Null(type) ((type)NULL)
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19
20/*
ccfc67b7 21=head1 Handy Values
954c1994 22
78342678 23=for apidoc AmnU||Nullch
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24Null character pointer. (No longer available when C<PERL_CORE> is
25defined.)
2307c6d0 26
78342678 27=for apidoc AmnU||Nullsv
72d33970 28Null SV pointer. (No longer available when C<PERL_CORE> is defined.)
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29
30=cut
31*/
32
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33# define Nullch Null(char*)
34# define Nullfp Null(PerlIO*)
35# define Nullsv Null(SV*)
36#endif
8d063cd8 37
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PP
38#ifdef TRUE
39#undef TRUE
40#endif
41#ifdef FALSE
42#undef FALSE
43#endif
44#define TRUE (1)
45#define FALSE (0)
46
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47/* The MUTABLE_*() macros cast pointers to the types shown, in such a way
48 * (compiler permitting) that casting away const-ness will give a warning;
49 * e.g.:
50 *
51 * const SV *sv = ...;
52 * AV *av1 = (AV*)sv; <== BAD: the const has been silently cast away
53 * AV *av2 = MUTABLE_AV(sv); <== GOOD: it may warn
54 */
55
b1bc3f34 56#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
f065df04 57# define MUTABLE_PTR(p) ({ void *_p = (p); _p; })
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58#else
59# define MUTABLE_PTR(p) ((void *) (p))
60#endif
61
a062e10d 62#define MUTABLE_AV(p) ((AV *)MUTABLE_PTR(p))
ea726b52 63#define MUTABLE_CV(p) ((CV *)MUTABLE_PTR(p))
159b6efe 64#define MUTABLE_GV(p) ((GV *)MUTABLE_PTR(p))
dbebbdb4 65#define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
a45c7426 66#define MUTABLE_IO(p) ((IO *)MUTABLE_PTR(p))
b1bc3f34 67#define MUTABLE_SV(p) ((SV *)MUTABLE_PTR(p))
27d4fb96 68
f789f6a4 69#if defined(I_STDBOOL) && !defined(PERL_BOOL_AS_CHAR)
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70# include <stdbool.h>
71# ifndef HAS_BOOL
72# define HAS_BOOL 1
73# endif
74#endif
75
8e84507e 76/* bool is built-in for g++-2.6.3 and later, which might be used
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77 for extensions. <_G_config.h> defines _G_HAVE_BOOL, but we can't
78 be sure _G_config.h will be included before this file. _G_config.h
8e84507e 79 also defines _G_HAVE_BOOL for both gcc and g++, but only g++
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80 actually has bool. Hence, _G_HAVE_BOOL is pretty useless for us.
81 g++ can be identified by __GNUG__.
82 Andy Dougherty February 2000
5d94fbed 83*/
3609ea0d 84#ifdef __GNUG__ /* GNU g++ has bool built-in */
f789f6a4 85# ifndef PERL_BOOL_AS_CHAR
5d94fbed 86# ifndef HAS_BOOL
c1d22f6b 87# define HAS_BOOL 1
5d94fbed 88# endif
f789f6a4 89# endif
5d94fbed
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90#endif
91
92#ifndef HAS_BOOL
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93# ifdef bool
94# undef bool
95# endif
70d5cb32 96# define bool char
c1d22f6b 97# define HAS_BOOL 1
a687059c 98#endif
0d3e774c 99
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100/*
101=for apidoc Am|bool|cBOOL|bool expr
102
103Cast-to-bool. A simple S<C<(bool) I<expr>>> cast may not do the right thing:
104if C<bool> is defined as C<char>, for example, then the cast from C<int> is
105implementation-defined.
106
107C<(bool)!!(cbool)> in a ternary triggers a bug in xlc on AIX
108
109=cut
110*/
18f5643b 111#define cBOOL(cbool) ((cbool) ? (bool)1 : (bool)0)
f2338a2e 112
46c6c7e2 113/* Try to figure out __func__ or __FUNCTION__ equivalent, if any.
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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. */
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117#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || (defined(__SUNPRO_C)) /* C99 or close enough. */
118# define FUNCTION__ __func__
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119#elif (defined(USING_MSVC6)) || /* MSVC6 has neither __func__ nor __FUNCTION and no good workarounds, either. */ \
120 (defined(__DECC_VER)) /* Tru64 or VMS, and strict C89 being used, but not modern enough cc (in Tur64, -c99 not known, only -std1). */
121# define FUNCTION__ ""
46c6c7e2 122#else
07798b17 123# define FUNCTION__ __FUNCTION__ /* Common extension. */
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124#endif
125
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126/* XXX A note on the perl source internal type system. The
127 original intent was that I32 be *exactly* 32 bits.
128
129 Currently, we only guarantee that I32 is *at least* 32 bits.
130 Specifically, if int is 64 bits, then so is I32. (This is the case
131 for the Cray.) This has the advantage of meshing nicely with
132 standard library calls (where we pass an I32 and the library is
133 expecting an int), but the disadvantage that an I32 is not 32 bits.
134 Andy Dougherty August 1996
24fef2a7 135
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136 There is no guarantee that there is *any* integral type with
137 exactly 32 bits. It is perfectly legal for a system to have
138 sizeof(short) == sizeof(int) == sizeof(long) == 8.
693762b4 139
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140 Similarly, there is no guarantee that I16 and U16 have exactly 16
141 bits.
693762b4 142
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143 For dealing with issues that may arise from various 32/64-bit
144 systems, we will ask Configure to check out
8175356b 145
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146 SHORTSIZE == sizeof(short)
147 INTSIZE == sizeof(int)
148 LONGSIZE == sizeof(long)
dc45a647 149 LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
3609ea0d 150 PTRSIZE == sizeof(void *)
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151 DOUBLESIZE == sizeof(double)
152 LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
8175356b 153
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154*/
155
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156#ifdef I_INTTYPES /* e.g. Linux has int64_t without <inttypes.h> */
157# include <inttypes.h>
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158# ifdef INT32_MIN_BROKEN
159# undef INT32_MIN
160# define INT32_MIN (-2147483647-1)
161# endif
162# ifdef INT64_MIN_BROKEN
163# undef INT64_MIN
164# define INT64_MIN (-9223372036854775807LL-1)
165# endif
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166#endif
167
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168typedef I8TYPE I8;
169typedef U8TYPE U8;
170typedef I16TYPE I16;
171typedef U16TYPE U16;
172typedef I32TYPE I32;
173typedef U32TYPE U32;
16d89be8 174
74b807c7 175#ifdef QUADKIND
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176typedef I64TYPE I64;
177typedef U64TYPE U64;
16d89be8 178#endif
8175356b 179
d8668976 180#if defined(UINT8_MAX) && defined(INT16_MAX) && defined(INT32_MAX)
5ff3f7a4 181
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182/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
183 Please search CHAR_MAX in perl.h for further details. */
184#define U8_MAX UINT8_MAX
185#define U8_MIN UINT8_MIN
186
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187#define I16_MAX INT16_MAX
188#define I16_MIN INT16_MIN
189#define U16_MAX UINT16_MAX
190#define U16_MIN UINT16_MIN
191
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192#define I32_MAX INT32_MAX
193#define I32_MIN INT32_MIN
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194#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
195# define U32_MAX UINT32_MAX
196#else
197# define U32_MAX 4294967295U
198#endif
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199#define U32_MIN UINT32_MIN
200
201#else
202
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203/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
204 Please search CHAR_MAX in perl.h for further details. */
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205#define U8_MAX PERL_UCHAR_MAX
206#define U8_MIN PERL_UCHAR_MIN
79072805 207
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208#define I16_MAX PERL_SHORT_MAX
209#define I16_MIN PERL_SHORT_MIN
210#define U16_MAX PERL_USHORT_MAX
211#define U16_MIN PERL_USHORT_MIN
79072805 212
c4f23d77 213#if LONGSIZE > 4
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214# define I32_MAX PERL_INT_MAX
215# define I32_MIN PERL_INT_MIN
216# define U32_MAX PERL_UINT_MAX
217# define U32_MIN PERL_UINT_MIN
79072805 218#else
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219# define I32_MAX PERL_LONG_MAX
220# define I32_MIN PERL_LONG_MIN
221# define U32_MAX PERL_ULONG_MAX
222# define U32_MIN PERL_ULONG_MIN
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223#endif
224
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225#endif
226
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227/* These C99 typedefs are useful sometimes for, say, loop variables whose
228 * maximum values are small, but for which speed trumps size. If we have a C99
229 * compiler, use that. Otherwise, a plain 'int' should be good enough.
230 *
231 * Restrict these to core for now until we are more certain this is a good
232 * idea. */
233#if defined(PERL_CORE) || defined(PERL_EXT)
234# ifdef I_STDINT
235 typedef int_fast8_t PERL_INT_FAST8_T;
236 typedef uint_fast8_t PERL_UINT_FAST8_T;
237 typedef int_fast16_t PERL_INT_FAST16_T;
238 typedef uint_fast16_t PERL_UINT_FAST16_T;
239# else
240 typedef int PERL_INT_FAST8_T;
241 typedef unsigned int PERL_UINT_FAST8_T;
242 typedef int PERL_INT_FAST16_T;
243 typedef unsigned int PERL_UINT_FAST16_T;
244# endif
245#endif
246
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247/* log(2) (i.e., log base 10 of 2) is pretty close to 0.30103, just in case
248 * anyone is grepping for it */
249#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log10(2) =~ 146/485 */
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250#define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8)
251#define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */
252
88794300 253/* Unused by core; should be deprecated */
ff68c719 254#define Ctl(ch) ((ch) & 037)
8d063cd8 255
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256#if defined(PERL_CORE) || defined(PERL_EXT)
257# ifndef MIN
258# define MIN(a,b) ((a) < (b) ? (a) : (b))
259# endif
260# ifndef MAX
261# define MAX(a,b) ((a) > (b) ? (a) : (b))
262# endif
263#endif
264
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265/* Returns a boolean as to whether the input unsigned number is a power of 2
266 * (2**0, 2**1, etc). In other words if it has just a single bit set.
267 * If not, subtracting 1 would leave the uppermost bit set, so the & would
268 * yield non-zero */
269#if defined(PERL_CORE) || defined(PERL_EXT)
011b1419 270# define isPOWER_OF_2(n) ((n) && ((n) & ((n)-1)) == 0)
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271#endif
272
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273/*
274=for apidoc Am|void|__ASSERT_|bool expr
275
276This is a helper macro to avoid preprocessor issues, replaced by nothing
277unless under DEBUGGING, where it expands to an assert of its argument,
278followed by a comma (hence the comma operator). If we just used a straight
279assert(), we would get a comma with nothing before it when not DEBUGGING.
280
281=cut
282
283We also use empty definition under Coverity since the __ASSERT__
284checks often check for things that Really Cannot Happen, and Coverity
285detects that and gets all excited. */
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286
287#if defined(DEBUGGING) && !defined(__COVERITY__)
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288# define __ASSERT_(statement) assert(statement),
289#else
290# define __ASSERT_(statement)
291#endif
292
3fe05580 293/*
a4ee4fb5 294=head1 SV Manipulation Functions
3fe05580 295
3bb9fd01 296=for apidoc Ama|SV*|newSVpvs|"literal string"
1568d13a 297Like C<newSVpvn>, but takes a literal string instead of a
30a15352 298string/length pair.
3fe05580 299
3bb9fd01 300=for apidoc Ama|SV*|newSVpvs_flags|"literal string"|U32 flags
1568d13a 301Like C<newSVpvn_flags>, but takes a literal string instead of
30a15352 302a string/length pair.
84bafc02 303
3bb9fd01 304=for apidoc Ama|SV*|newSVpvs_share|"literal string"
1568d13a 305Like C<newSVpvn_share>, but takes a literal string instead of
30a15352 306a string/length pair and omits the hash parameter.
3fe05580 307
3bb9fd01 308=for apidoc Am|void|sv_catpvs_flags|SV* sv|"literal string"|I32 flags
1568d13a 309Like C<sv_catpvn_flags>, but takes a literal string instead
30a15352 310of a string/length pair.
9dcc53ea 311
3bb9fd01 312=for apidoc Am|void|sv_catpvs_nomg|SV* sv|"literal string"
1568d13a 313Like C<sv_catpvn_nomg>, but takes a literal string instead of
0c395ea5 314a string/length pair.
9dcc53ea 315
3bb9fd01 316=for apidoc Am|void|sv_catpvs|SV* sv|"literal string"
1568d13a 317Like C<sv_catpvn>, but takes a literal string instead of a
0c395ea5 318string/length pair.
3fe05580 319
3bb9fd01 320=for apidoc Am|void|sv_catpvs_mg|SV* sv|"literal string"
1568d13a 321Like C<sv_catpvn_mg>, but takes a literal string instead of a
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322string/length pair.
323
3bb9fd01 324=for apidoc Am|void|sv_setpvs|SV* sv|"literal string"
1568d13a 325Like C<sv_setpvn>, but takes a literal string instead of a
0c395ea5 326string/length pair.
3fe05580 327
3bb9fd01 328=for apidoc Am|void|sv_setpvs_mg|SV* sv|"literal string"
1568d13a 329Like C<sv_setpvn_mg>, but takes a literal string instead of a
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330string/length pair.
331
3bb9fd01 332=for apidoc Am|SV *|sv_setref_pvs|SV *const rv|const char *const classname|"literal string"
1568d13a 333Like C<sv_setref_pvn>, but takes a literal string instead of
0c395ea5 334a string/length pair.
9dcc53ea 335
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336=head1 Memory Management
337
3bb9fd01 338=for apidoc Ama|char*|savepvs|"literal string"
1568d13a 339Like C<savepvn>, but takes a literal string instead of a
30a15352 340string/length pair.
3fe05580 341
3bb9fd01 342=for apidoc Ama|char*|savesharedpvs|"literal string"
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343A version of C<savepvs()> which allocates the duplicate string in memory
344which is shared between threads.
345
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346=head1 GV Functions
347
3bb9fd01 348=for apidoc Am|HV*|gv_stashpvs|"name"|I32 create
1568d13a 349Like C<gv_stashpvn>, but takes a literal string instead of a
0c395ea5 350string/length pair.
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351
352=head1 Hash Manipulation Functions
353
3bb9fd01 354=for apidoc Am|SV**|hv_fetchs|HV* tb|"key"|I32 lval
1568d13a 355Like C<hv_fetch>, but takes a literal string instead of a
0c395ea5 356string/length pair.
3fe05580 357
3bb9fd01 358=for apidoc Am|SV**|hv_stores|HV* tb|"key"|SV* val
1568d13a 359Like C<hv_store>, but takes a literal string instead of a
0c395ea5 360string/length pair
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361and omits the hash parameter.
362
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363=head1 Lexer interface
364
3bb9fd01 365=for apidoc Amx|void|lex_stuff_pvs|"pv"|U32 flags
510966aa 366
1568d13a 367Like L</lex_stuff_pvn>, but takes a literal string instead of
0c395ea5 368a string/length pair.
510966aa 369
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370=cut
371*/
372
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373/* concatenating with "" ensures that only literal strings are accepted as
374 * argument */
26bfd924 375#define STR_WITH_LEN(s) ("" s ""), (sizeof(s)-1)
2efa8cc7 376
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377/* note that STR_WITH_LEN() can't be used as argument to macros or functions
378 * that under some configurations might be macros, which means that it requires
379 * the full Perl_xxx(aTHX_ ...) form for any API calls where it's used.
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380 */
381
382/* STR_WITH_LEN() shortcuts */
383#define newSVpvs(str) Perl_newSVpvn(aTHX_ STR_WITH_LEN(str))
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384#define newSVpvs_flags(str,flags) \
385 Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN(str), flags)
ba3a79e7 386#define newSVpvs_share(str) Perl_newSVpvn_share(aTHX_ STR_WITH_LEN(str), 0)
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387#define sv_catpvs_flags(sv, str, flags) \
388 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), flags)
389#define sv_catpvs_nomg(sv, str) \
390 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), 0)
391#define sv_catpvs(sv, str) \
392 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), SV_GMAGIC)
393#define sv_catpvs_mg(sv, str) \
394 Perl_sv_catpvn_flags(aTHX_ sv, STR_WITH_LEN(str), SV_GMAGIC|SV_SMAGIC)
3fe05580 395#define sv_setpvs(sv, str) Perl_sv_setpvn(aTHX_ sv, STR_WITH_LEN(str))
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396#define sv_setpvs_mg(sv, str) Perl_sv_setpvn_mg(aTHX_ sv, STR_WITH_LEN(str))
397#define sv_setref_pvs(rv, classname, str) \
398 Perl_sv_setref_pvn(aTHX_ rv, classname, STR_WITH_LEN(str))
ba3a79e7 399#define savepvs(str) Perl_savepvn(aTHX_ STR_WITH_LEN(str))
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400#define savesharedpvs(str) Perl_savesharedpvn(aTHX_ STR_WITH_LEN(str))
401#define gv_stashpvs(str, create) \
402 Perl_gv_stashpvn(aTHX_ STR_WITH_LEN(str), create)
403#define gv_fetchpvs(namebeg, add, sv_type) \
404 Perl_gv_fetchpvn_flags(aTHX_ STR_WITH_LEN(namebeg), add, sv_type)
405#define gv_fetchpvn(namebeg, len, add, sv_type) \
406 Perl_gv_fetchpvn_flags(aTHX_ namebeg, len, add, sv_type)
407#define sv_catxmlpvs(dsv, str, utf8) \
408 Perl_sv_catxmlpvn(aTHX_ dsv, STR_WITH_LEN(str), utf8)
4ac46235 409
ba3a79e7 410
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411#define lex_stuff_pvs(pv,flags) Perl_lex_stuff_pvn(aTHX_ STR_WITH_LEN(pv), flags)
412
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413#define get_cvs(str, flags) \
414 Perl_get_cvn_flags(aTHX_ STR_WITH_LEN(str), (flags))
5c1737d1 415
954c1994 416/*
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417=head1 Miscellaneous Functions
418
954c1994 419=for apidoc Am|bool|strNE|char* s1|char* s2
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420Test two C<NUL>-terminated strings to see if they are different. Returns true
421or false.
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422
423=for apidoc Am|bool|strEQ|char* s1|char* s2
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424Test two C<NUL>-terminated strings to see if they are equal. Returns true or
425false.
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426
427=for apidoc Am|bool|strLT|char* s1|char* s2
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428Test two C<NUL>-terminated strings to see if the first, C<s1>, is less than the
429second, C<s2>. Returns true or false.
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430
431=for apidoc Am|bool|strLE|char* s1|char* s2
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432Test two C<NUL>-terminated strings to see if the first, C<s1>, is less than or
433equal to the second, C<s2>. Returns true or false.
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434
435=for apidoc Am|bool|strGT|char* s1|char* s2
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436Test two C<NUL>-terminated strings to see if the first, C<s1>, is greater than
437the second, C<s2>. Returns true or false.
954c1994
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438
439=for apidoc Am|bool|strGE|char* s1|char* s2
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440Test two C<NUL>-terminated strings to see if the first, C<s1>, is greater than
441or equal to the second, C<s2>. Returns true or false.
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442
443=for apidoc Am|bool|strnNE|char* s1|char* s2|STRLEN len
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444Test two C<NUL>-terminated strings to see if they are different. The C<len>
445parameter indicates the number of bytes to compare. Returns true or false. (A
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446wrapper for C<strncmp>).
447
448=for apidoc Am|bool|strnEQ|char* s1|char* s2|STRLEN len
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449Test two C<NUL>-terminated strings to see if they are equal. The C<len>
450parameter indicates the number of bytes to compare. Returns true or false. (A
451wrapper for C<strncmp>).
954c1994 452
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453=for apidoc Am|bool|memEQ|char* s1|char* s2|STRLEN len
454Test two buffers (which may contain embedded C<NUL> characters, to see if they
455are equal. The C<len> parameter indicates the number of bytes to compare.
456Returns zero if equal, or non-zero if non-equal.
457
3bb9fd01 458=for apidoc Am|bool|memEQs|char* s1|STRLEN l1|"s2"
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459Like L</memEQ>, but the second string is a literal enclosed in double quotes,
460C<l1> gives the number of bytes in C<s1>.
461Returns zero if equal, or non-zero if non-equal.
462
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463=for apidoc Am|bool|memNE|char* s1|char* s2|STRLEN len
464Test two buffers (which may contain embedded C<NUL> characters, to see if they
465are not equal. The C<len> parameter indicates the number of bytes to compare.
466Returns zero if non-equal, or non-zero if equal.
467
3bb9fd01 468=for apidoc Am|bool|memNEs|char* s1|STRLEN l1|"s2"
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469Like L</memNE>, but the second string is a literal enclosed in double quotes,
470C<l1> gives the number of bytes in C<s1>.
471Returns zero if non-equal, or zero if non-equal.
472
954c1994 473=cut
fc169e00
KW
474
475New macros should use the following conventions for their names (which are
476based on the underlying C library functions):
477
478 (mem | str n? ) (EQ | NE | LT | GT | GE | (( BEGIN | END ) P? )) l? s?
479
480 Each has two main parameters, string-like operands that are compared
481 against each other, as specified by the macro name. Some macros may
482 additionally have one or potentially even two length parameters. If a length
483 parameter applies to both string parameters, it will be positioned third;
484 otherwise any length parameter immediately follows the string parameter it
485 applies to.
486
487 If the prefix to the name is 'str', the string parameter is a pointer to a C
488 language string. Such a string does not contain embedded NUL bytes; its
489 length may be unknown, but can be calculated by C<strlen()>, since it is
490 terminated by a NUL, which isn't included in its length.
491
492 The optional 'n' following 'str' means that that there is a third parameter,
493 giving the maximum number of bytes to look at in each string. Even if both
494 strings are longer than the length parameter, those extra bytes will be
495 unexamined.
496
497 The 's' suffix means that the 2nd byte string parameter is a literal C
498 double-quoted string. Its length will automatically be calculated by the
499 macro, so no length parameter will ever be needed for it.
500
501 If the prefix is 'mem', the string parameters don't have to be C strings;
502 they may contain embedded NUL bytes, do not necessarily have a terminating
503 NUL, and their lengths can be known only through other means, which in
504 practice are additional parameter(s) passed to the function. All 'mem'
505 functions have at least one length parameter. Barring any 'l' or 's' suffix,
506 there is a single length parameter, in position 3, which applies to both
507 string parameters. The 's' suffix means, as described above, that the 2nd
508 string is a literal double-quoted C string (hence its length is calculated by
509 the macro, and the length parameter to the function applies just to the first
510 string parameter, and hence is positioned just after it). An 'l' suffix
511 means that the 2nd string parameter has its own length parameter, and the
512 signature will look like memFOOl(s1, l1, s2, l2).
513
514 BEGIN (and END) are for testing if the 2nd string is an initial (or final)
515 substring of the 1st string. 'P' if present indicates that the substring
516 must be a "proper" one in tha mathematical sense that the first one must be
517 strictly larger than the 2nd.
518
954c1994
GS
519*/
520
62946e08 521
75400963
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522#define strNE(s1,s2) (strcmp(s1,s2) != 0)
523#define strEQ(s1,s2) (strcmp(s1,s2) == 0)
8d063cd8
LW
524#define strLT(s1,s2) (strcmp(s1,s2) < 0)
525#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
526#define strGT(s1,s2) (strcmp(s1,s2) > 0)
527#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
62946e08 528
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529#define strnNE(s1,s2,l) (strncmp(s1,s2,l) != 0)
530#define strnEQ(s1,s2,l) (strncmp(s1,s2,l) == 0)
378cc40b 531
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532#define memEQ(s1,s2,l) (memcmp(((const void *) (s1)), ((const void *) (s2)), l) == 0)
533#define memNE(s1,s2,l) (! memEQ(s1,s2,l))
36477c24 534
085b7534 535/* memEQ and memNE where second comparand is a string constant */
568a785a 536#define memEQs(s1, l, s2) \
777fa2cb 537 (((sizeof(s2)-1) == (l)) && memEQ((s1), ("" s2 ""), (sizeof(s2)-1)))
5f50c6c9 538#define memNEs(s1, l, s2) (! memEQs(s1, l, s2))
568a785a 539
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540/* Keep these private until we decide it was a good idea */
541#if defined(PERL_CORE) || defined(PERL_EXT) || defined(PERL_EXT_POSIX)
542
543#define strBEGINs(s1,s2) (strncmp(s1,"" s2 "", sizeof(s2)-1) == 0)
544
bdb7e3f0 545#define memBEGINs(s1, l, s2) \
30a6480c 546 ( (Ptrdiff_t) (l) >= (Ptrdiff_t) sizeof(s2) - 1 \
bdb7e3f0 547 && memEQ(s1, "" s2 "", sizeof(s2)-1))
de627158 548#define memBEGINPs(s1, l, s2) \
30a6480c 549 ( (Ptrdiff_t) (l) > (Ptrdiff_t) sizeof(s2) - 1 \
de627158 550 && memEQ(s1, "" s2 "", sizeof(s2)-1))
bdb7e3f0 551#define memENDs(s1, l, s2) \
30a6480c 552 ( (Ptrdiff_t) (l) >= (Ptrdiff_t) sizeof(s2) - 1 \
bdb7e3f0 553 && memEQ(s1 + (l) - (sizeof(s2) - 1), "" s2 "", sizeof(s2)-1))
b80f8424 554#define memENDPs(s1, l, s2) \
30a6480c 555 ( (Ptrdiff_t) (l) > (Ptrdiff_t) sizeof(s2) \
b80f8424 556 && memEQ(s1 + (l) - (sizeof(s2) - 1), "" s2 "", sizeof(s2)-1))
fdbb9a7c 557#endif /* End of making macros private */
bdb7e3f0 558
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559#define memLT(s1,s2,l) (memcmp(s1,s2,l) < 0)
560#define memLE(s1,s2,l) (memcmp(s1,s2,l) <= 0)
561#define memGT(s1,s2,l) (memcmp(s1,s2,l) > 0)
562#define memGE(s1,s2,l) (memcmp(s1,s2,l) >= 0)
563
bbce6d69
PP
564/*
565 * Character classes.
566 *
567 * Unfortunately, the introduction of locales means that we
568 * can't trust isupper(), etc. to tell the truth. And when
569 * it comes to /\w+/ with tainting enabled, we *must* be able
570 * to trust our character classes.
571 *
572 * Therefore, the default tests in the text of Perl will be
573 * independent of locale. Any code that wants to depend on
574 * the current locale will use the tests that begin with "lc".
575 */
576
2304df62
AD
577#ifdef HAS_SETLOCALE /* XXX Is there a better test for this? */
578# ifndef CTYPE256
579# define CTYPE256
580# endif
581#endif
582
954c1994 583/*
ccfc67b7 584
dcccc8ff 585=head1 Character classification
243effed
KW
586This section is about functions (really macros) that classify characters
587into types, such as punctuation versus alphabetic, etc. Most of these are
588analogous to regular expression character classes. (See
589L<perlrecharclass/POSIX Character Classes>.) There are several variants for
590each class. (Not all macros have all variants; each item below lists the
591ones valid for it.) None are affected by C<use bytes>, and only the ones
592with C<LC> in the name are affected by the current locale.
593
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594The base function, e.g., C<isALPHA()>, takes any signed or unsigned value,
595treating it as a code point, and returns a boolean as to whether or not the
596character represented by it is (or on non-ASCII platforms, corresponds to) an
6aff1f14
KW
597ASCII character in the named class based on platform, Unicode, and Perl rules.
598If the input is a number that doesn't fit in an octet, FALSE is returned.
243effed 599
c98722a4 600Variant C<isI<FOO>_A> (e.g., C<isALPHA_A()>) is identical to the base function
550da823
KW
601with no suffix C<"_A">. This variant is used to emphasize by its name that
602only ASCII-range characters can return TRUE.
4b9734bf 603
d60679e1 604Variant C<isI<FOO>_L1> imposes the Latin-1 (or EBCDIC equivalent) character set
4b9734bf
KW
605onto the platform. That is, the code points that are ASCII are unaffected,
606since ASCII is a subset of Latin-1. But the non-ASCII code points are treated
607as if they are Latin-1 characters. For example, C<isWORDCHAR_L1()> will return
608true when called with the code point 0xDF, which is a word character in both
4650c663 609ASCII and EBCDIC (though it represents different characters in each).
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610If the input is a number that doesn't fit in an octet, FALSE is returned.
611(Perl's documentation uses a colloquial definition of Latin-1, to include all
612code points below 256.)
243effed 613
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614Variant C<isI<FOO>_uvchr> is exactly like the C<isI<FOO>_L1> variant, for
615inputs below 256, but if the code point is larger than 255, Unicode rules are
616used to determine if it is in the character class. For example,
d0da05db 617C<isWORDCHAR_uvchr(0x100)> returns TRUE, since 0x100 is LATIN CAPITAL LETTER A
6aff1f14 618WITH MACRON in Unicode, and is a word character.
243effed 619
c98722a4 620Variant C<isI<FOO>_utf8_safe> is like C<isI<FOO>_uvchr>, but is used for UTF-8
d713f9d9
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621encoded strings. Each call classifies the first character of the string. This
622variant takes two parameters. The first, C<p>, is a
da8c1a98
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623pointer to the first byte of the character to be classified. (Recall that it
624may take more than one byte to represent a character in UTF-8 strings.) The
625second parameter, C<e>, points to anywhere in the string beyond the first
626character, up to one byte past the end of the entire string. The suffix
627C<_safe> in the function's name indicates that it will not attempt to read
628beyond S<C<e - 1>>, provided that the constraint S<C<s E<lt> e>> is true (this
629is asserted for in C<-DDEBUGGING> builds). If the UTF-8 for the input
630character is malformed in some way, the program may croak, or the function may
631return FALSE, at the discretion of the implementation, and subject to change in
632future releases.
633
c98722a4 634Variant C<isI<FOO>_utf8> is like C<isI<FOO>_utf8_safe>, but takes just a single
da8c1a98 635parameter, C<p>, which has the same meaning as the corresponding parameter does
c98722a4 636in C<isI<FOO>_utf8_safe>. The function therefore can't check if it is reading
8b4b30c5 637beyond the end of the string. Starting in Perl v5.32, it will take a second
c98722a4 638parameter, becoming a synonym for C<isI<FOO>_utf8_safe>. At that time every
34aeb2e9 639program that uses it will have to be changed to successfully compile. In the
c98722a4 640meantime, the first runtime call to C<isI<FOO>_utf8> from each call point in the
34aeb2e9 641program will raise a deprecation warning, enabled by default. You can convert
c98722a4 642your program now to use C<isI<FOO>_utf8_safe>, and avoid the warnings, and get an
8b4b30c5 643extra measure of protection, or you can wait until v5.32, when you'll be forced
34aeb2e9 644to add the C<e> parameter.
243effed 645
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646Variant C<isI<FOO>_LC> is like the C<isI<FOO>_A> and C<isI<FOO>_L1> variants,
647but the result is based on the current locale, which is what C<LC> in the name
648stands for. If Perl can determine that the current locale is a UTF-8 locale,
649it uses the published Unicode rules; otherwise, it uses the C library function
650that gives the named classification. For example, C<isDIGIT_LC()> when not in
651a UTF-8 locale returns the result of calling C<isdigit()>. FALSE is always
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652returned if the input won't fit into an octet. On some platforms where the C
653library function is known to be defective, Perl changes its result to follow
654the POSIX standard's rules.
243effed 655
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656Variant C<isI<FOO>_LC_uvchr> acts exactly like C<isI<FOO>_LC> for inputs less
657than 256, but for larger ones it returns the Unicode classification of the code
658point.
243effed 659
c98722a4 660Variant C<isI<FOO>_LC_utf8_safe> is like C<isI<FOO>_LC_uvchr>, but is used for UTF-8
d713f9d9
KW
661encoded strings. Each call classifies the first character of the string. This
662variant takes two parameters. The first, C<p>, is a pointer to the first byte
663of the character to be classified. (Recall that it may take more than one byte
664to represent a character in UTF-8 strings.) The second parameter, C<e>,
665points to anywhere in the string beyond the first character, up to one byte
666past the end of the entire string. The suffix C<_safe> in the function's name
667indicates that it will not attempt to read beyond S<C<e - 1>>, provided that
668the constraint S<C<s E<lt> e>> is true (this is asserted for in C<-DDEBUGGING>
669builds). If the UTF-8 for the input character is malformed in some way, the
670program may croak, or the function may return FALSE, at the discretion of the
671implementation, and subject to change in future releases.
da8c1a98 672
c98722a4 673Variant C<isI<FOO>_LC_utf8> is like C<isI<FOO>_LC_utf8_safe>, but takes just a single
da8c1a98 674parameter, C<p>, which has the same meaning as the corresponding parameter does
c98722a4 675in C<isI<FOO>_LC_utf8_safe>. The function therefore can't check if it is reading
8b4b30c5 676beyond the end of the string. Starting in Perl v5.32, it will take a second
c98722a4 677parameter, becoming a synonym for C<isI<FOO>_LC_utf8_safe>. At that time every
34aeb2e9 678program that uses it will have to be changed to successfully compile. In the
c98722a4 679meantime, the first runtime call to C<isI<FOO>_LC_utf8> from each call point in
34aeb2e9 680the program will raise a deprecation warning, enabled by default. You can
c98722a4 681convert your program now to use C<isI<FOO>_LC_utf8_safe>, and avoid the warnings,
8b4b30c5 682and get an extra measure of protection, or you can wait until v5.32, when
34aeb2e9 683you'll be forced to add the C<e> parameter.
ccfc67b7 684
d713f9d9
KW
685=for apidoc Am|bool|isALPHA|int ch
686Returns a boolean indicating whether the specified input is one of C<[A-Za-z]>,
687analogous to C<m/[[:alpha:]]/>.
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KW
688See the L<top of this section|/Character classification> for an explanation of
689variants
da8c1a98
KW
690C<isALPHA_A>, C<isALPHA_L1>, C<isALPHA_uvchr>, C<isALPHA_utf8_safe>,
691C<isALPHA_LC>, C<isALPHA_LC_uvchr>, and C<isALPHA_LC_utf8_safe>.
8a58bdcf 692
f16858ed
KW
693=cut
694
695Here and below, we add the protoypes of these macros for downstream programs
696that would be interested in them, such as Devel::PPPort
697
698=for apidoc Amh|bool|isALPHA_A|int ch
699=for apidoc Amh|bool|isALPHA_L1|int ch
700=for apidoc Amh|bool|isALPHA_uvchr|int ch
701=for apidoc Amh|bool|isALPHA_utf8_safe|U8 * s|U8 * end
702=for apidoc Amh|bool|isALPHA_utf8|U8 * s
703=for apidoc Amh|bool|isALPHA_LC|int ch
704=for apidoc Amh|bool|isALPHA_LC_uvchr|int ch
705=for apidoc Amh|bool|isALPHA_LC_utf8_safe|U8 * s| U8 *end
706
d713f9d9
KW
707=for apidoc Am|bool|isALPHANUMERIC|int ch
708Returns a boolean indicating whether the specified character is one of
709C<[A-Za-z0-9]>, analogous to C<m/[[:alnum:]]/>.
dcccc8ff
KW
710See the L<top of this section|/Character classification> for an explanation of
711variants
d0da05db 712C<isALPHANUMERIC_A>, C<isALPHANUMERIC_L1>, C<isALPHANUMERIC_uvchr>,
da8c1a98
KW
713C<isALPHANUMERIC_utf8_safe>, C<isALPHANUMERIC_LC>, C<isALPHANUMERIC_LC_uvchr>,
714and C<isALPHANUMERIC_LC_utf8_safe>.
15861f94 715
255b632a
KW
716A (discouraged from use) synonym is C<isALNUMC> (where the C<C> suffix means
717this corresponds to the C language alphanumeric definition). Also
718there are the variants
719C<isALNUMC_A>, C<isALNUMC_L1>
720C<isALNUMC_LC>, and C<isALNUMC_LC_uvchr>.
721
f16858ed
KW
722=for apidoc Amh|bool|isALPHANUMERIC_A|int ch
723=for apidoc Amh|bool|isALPHANUMERIC_L1|int ch
724=for apidoc Amh|bool|isALPHANUMERIC_uvchr|int ch
725=for apidoc Amh|bool|isALPHANUMERIC_utf8_safe|U8 * s|U8 * end
726=for apidoc Amh|bool|isALPHANUMERIC_utf8|U8 * s
727=for apidoc Amh|bool|isALPHANUMERIC_LC|int ch
728=for apidoc Amh|bool|isALPHANUMERIC_LC_uvchr|int ch
729=for apidoc Amh|bool|isALPHANUMERIC_LC_utf8_safe|U8 * s| U8 *end
730=for apidoc Amh|bool|isALNUMC|int ch
731=for apidoc Amh|bool|isALNUMC_A|int ch
732=for apidoc Amh|bool|isALNUMC_L1|int ch
733=for apidoc Amh|bool|isALNUMC_LC|int ch
734=for apidoc Amh|bool|isALNUMC_LC_uvchr|int ch
735
d713f9d9 736=for apidoc Am|bool|isASCII|int ch
8a58bdcf 737Returns a boolean indicating whether the specified character is one of the 128
243effed 738characters in the ASCII character set, analogous to C<m/[[:ascii:]]/>.
e5ad6aba 739On non-ASCII platforms, it returns TRUE iff this
8a58bdcf
KW
740character corresponds to an ASCII character. Variants C<isASCII_A()> and
741C<isASCII_L1()> are identical to C<isASCII()>.
dcccc8ff
KW
742See the L<top of this section|/Character classification> for an explanation of
743variants
da8c1a98
KW
744C<isASCII_uvchr>, C<isASCII_utf8_safe>, C<isASCII_LC>, C<isASCII_LC_uvchr>, and
745C<isASCII_LC_utf8_safe>. Note, however, that some platforms do not have the C
243effed
KW
746library routine C<isascii()>. In these cases, the variants whose names contain
747C<LC> are the same as the corresponding ones without.
748
f16858ed
KW
749=for apidoc Amh|bool|isASCII_A|int ch
750=for apidoc Amh|bool|isASCII_L1|int ch
751=for apidoc Amh|bool|isASCII_uvchr|int ch
752=for apidoc Amh|bool|isASCII_utf8_safe|U8 * s|U8 * end
753=for apidoc Amh|bool|isASCII_utf8|U8 * s
754=for apidoc Amh|bool|isASCII_LC|int ch
755=for apidoc Amh|bool|isASCII_LC_uvchr|int ch
756=for apidoc Amh|bool|isASCII_LC_utf8_safe|U8 * s| U8 *end
757
d98532ea
KW
758Also note, that because all ASCII characters are UTF-8 invariant (meaning they
759have the exact same representation (always a single byte) whether encoded in
760UTF-8 or not), C<isASCII> will give the correct results when called with any
da8c1a98
KW
761byte in any string encoded or not in UTF-8. And similarly C<isASCII_utf8_safe>
762will work properly on any string encoded or not in UTF-8.
d98532ea 763
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KW
764=for apidoc Am|bool|isBLANK|char ch
765Returns a boolean indicating whether the specified character is a
6aff1f14 766character considered to be a blank, analogous to C<m/[[:blank:]]/>.
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KW
767See the L<top of this section|/Character classification> for an explanation of
768variants
da8c1a98
KW
769C<isBLANK_A>, C<isBLANK_L1>, C<isBLANK_uvchr>, C<isBLANK_utf8_safe>,
770C<isBLANK_LC>, C<isBLANK_LC_uvchr>, and C<isBLANK_LC_utf8_safe>. Note,
771however, that some platforms do not have the C library routine
772C<isblank()>. In these cases, the variants whose names contain C<LC> are
773the same as the corresponding ones without.
243effed 774
f16858ed
KW
775=for apidoc Amh|bool|isBLANK_A|int ch
776=for apidoc Amh|bool|isBLANK_L1|int ch
777=for apidoc Amh|bool|isBLANK_uvchr|int ch
778=for apidoc Amh|bool|isBLANK_utf8_safe|U8 * s|U8 * end
779=for apidoc Amh|bool|isBLANK_utf8|U8 * s
780=for apidoc Amh|bool|isBLANK_LC|int ch
781=for apidoc Amh|bool|isBLANK_LC_uvchr|int ch
782=for apidoc Amh|bool|isBLANK_LC_utf8_safe|U8 * s| U8 *end
783
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KW
784=for apidoc Am|bool|isCNTRL|char ch
785Returns a boolean indicating whether the specified character is a
6aff1f14 786control character, analogous to C<m/[[:cntrl:]]/>.
dcccc8ff
KW
787See the L<top of this section|/Character classification> for an explanation of
788variants
da8c1a98
KW
789C<isCNTRL_A>, C<isCNTRL_L1>, C<isCNTRL_uvchr>, C<isCNTRL_utf8_safe>,
790C<isCNTRL_LC>, C<isCNTRL_LC_uvchr>, and C<isCNTRL_LC_utf8_safe> On EBCDIC
791platforms, you almost always want to use the C<isCNTRL_L1> variant.
954c1994 792
f16858ed
KW
793=for apidoc Amh|bool|isCNTRL_A|int ch
794=for apidoc Amh|bool|isCNTRL_L1|int ch
795=for apidoc Amh|bool|isCNTRL_uvchr|int ch
796=for apidoc Amh|bool|isCNTRL_utf8_safe|U8 * s|U8 * end
797=for apidoc Amh|bool|isCNTRL_utf8|U8 * s
798=for apidoc Amh|bool|isCNTRL_LC|int ch
799=for apidoc Amh|bool|isCNTRL_LC_uvchr|int ch
800=for apidoc Amh|bool|isCNTRL_LC_utf8_safe|U8 * s| U8 *end
801
954c1994 802=for apidoc Am|bool|isDIGIT|char ch
2787a470 803Returns a boolean indicating whether the specified character is a
6aff1f14 804digit, analogous to C<m/[[:digit:]]/>.
8a58bdcf 805Variants C<isDIGIT_A> and C<isDIGIT_L1> are identical to C<isDIGIT>.
dcccc8ff
KW
806See the L<top of this section|/Character classification> for an explanation of
807variants
da8c1a98
KW
808C<isDIGIT_uvchr>, C<isDIGIT_utf8_safe>, C<isDIGIT_LC>, C<isDIGIT_LC_uvchr>, and
809C<isDIGIT_LC_utf8_safe>.
243effed 810
f16858ed
KW
811=for apidoc Amh|bool|isDIGIT_A|int ch
812=for apidoc Amh|bool|isDIGIT_L1|int ch
813=for apidoc Amh|bool|isDIGIT_uvchr|int ch
814=for apidoc Amh|bool|isDIGIT_utf8_safe|U8 * s|U8 * end
815=for apidoc Amh|bool|isDIGIT_utf8|U8 * s
816=for apidoc Amh|bool|isDIGIT_LC|int ch
817=for apidoc Amh|bool|isDIGIT_LC_uvchr|int ch
818=for apidoc Amh|bool|isDIGIT_LC_utf8_safe|U8 * s| U8 *end
819
243effed
KW
820=for apidoc Am|bool|isGRAPH|char ch
821Returns a boolean indicating whether the specified character is a
6aff1f14 822graphic character, analogous to C<m/[[:graph:]]/>.
dcccc8ff 823See the L<top of this section|/Character classification> for an explanation of
da8c1a98
KW
824variants C<isGRAPH_A>, C<isGRAPH_L1>, C<isGRAPH_uvchr>, C<isGRAPH_utf8_safe>,
825C<isGRAPH_LC>, C<isGRAPH_LC_uvchr>, and C<isGRAPH_LC_utf8_safe>.
954c1994 826
f16858ed
KW
827=for apidoc Amh|bool|isGRAPH_A|int ch
828=for apidoc Amh|bool|isGRAPH_L1|int ch
829=for apidoc Amh|bool|isGRAPH_uvchr|int ch
830=for apidoc Amh|bool|isGRAPH_utf8_safe|U8 * s|U8 * end
831=for apidoc Amh|bool|isGRAPH_utf8|U8 * s
832=for apidoc Amh|bool|isGRAPH_LC|int ch
833=for apidoc Amh|bool|isGRAPH_LC_uvchr|int ch
834=for apidoc Amh|bool|isGRAPH_LC_utf8_safe|U8 * s| U8 *end
835
0c82b6df 836=for apidoc Am|bool|isLOWER|char ch
2787a470 837Returns a boolean indicating whether the specified character is a
6aff1f14 838lowercase character, analogous to C<m/[[:lower:]]/>.
dcccc8ff
KW
839See the L<top of this section|/Character classification> for an explanation of
840variants
da8c1a98
KW
841C<isLOWER_A>, C<isLOWER_L1>, C<isLOWER_uvchr>, C<isLOWER_utf8_safe>,
842C<isLOWER_LC>, C<isLOWER_LC_uvchr>, and C<isLOWER_LC_utf8_safe>.
0c82b6df 843
f16858ed
KW
844=for apidoc Amh|bool|isLOWER_A|int ch
845=for apidoc Amh|bool|isLOWER_L1|int ch
846=for apidoc Amh|bool|isLOWER_uvchr|int ch
847=for apidoc Amh|bool|isLOWER_utf8_safe|U8 * s|U8 * end
848=for apidoc Amh|bool|isLOWER_utf8|U8 * s
849=for apidoc Amh|bool|isLOWER_LC|int ch
850=for apidoc Amh|bool|isLOWER_LC_uvchr|int ch
851=for apidoc Amh|bool|isLOWER_LC_utf8_safe|U8 * s| U8 *end
852
c99e91e9 853=for apidoc Am|bool|isOCTAL|char ch
2787a470 854Returns a boolean indicating whether the specified character is an
6aff1f14 855octal digit, [0-7].
243effed
KW
856The only two variants are C<isOCTAL_A> and C<isOCTAL_L1>; each is identical to
857C<isOCTAL>.
858
f16858ed
KW
859=for apidoc Amh|bool|isOCTAL_A|int ch
860=for apidoc Amh|bool|isOCTAL_L1|int ch
861
243effed
KW
862=for apidoc Am|bool|isPUNCT|char ch
863Returns a boolean indicating whether the specified character is a
6aff1f14
KW
864punctuation character, analogous to C<m/[[:punct:]]/>.
865Note that the definition of what is punctuation isn't as
243effed
KW
866straightforward as one might desire. See L<perlrecharclass/POSIX Character
867Classes> for details.
dcccc8ff 868See the L<top of this section|/Character classification> for an explanation of
da8c1a98
KW
869variants C<isPUNCT_A>, C<isPUNCT_L1>, C<isPUNCT_uvchr>, C<isPUNCT_utf8_safe>,
870C<isPUNCT_LC>, C<isPUNCT_LC_uvchr>, and C<isPUNCT_LC_utf8_safe>.
c99e91e9 871
f16858ed
KW
872=for apidoc Amh|bool|isPUNCT_A|int ch
873=for apidoc Amh|bool|isPUNCT_L1|int ch
874=for apidoc Amh|bool|isPUNCT_uvchr|int ch
875=for apidoc Amh|bool|isPUNCT_utf8_safe|U8 * s|U8 * end
876=for apidoc Amh|bool|isPUNCT_utf8|U8 * s
877=for apidoc Amh|bool|isPUNCT_LC|int ch
878=for apidoc Amh|bool|isPUNCT_LC_uvchr|int ch
879=for apidoc Amh|bool|isPUNCT_LC_utf8_safe|U8 * s| U8 *end
880
0c82b6df 881=for apidoc Am|bool|isSPACE|char ch
2787a470 882Returns a boolean indicating whether the specified character is a
6aff1f14 883whitespace character. This is analogous
398d098a 884to what C<m/\s/> matches in a regular expression. Starting in Perl 5.18
779cf272 885this also matches what C<m/[[:space:]]/> does. Prior to 5.18, only the
398d098a
KW
886locale forms of this macro (the ones with C<LC> in their names) matched
887precisely what C<m/[[:space:]]/> does. In those releases, the only difference,
888in the non-locale variants, was that C<isSPACE()> did not match a vertical tab.
889(See L</isPSXSPC> for a macro that matches a vertical tab in all releases.)
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KW
890See the L<top of this section|/Character classification> for an explanation of
891variants
da8c1a98
KW
892C<isSPACE_A>, C<isSPACE_L1>, C<isSPACE_uvchr>, C<isSPACE_utf8_safe>,
893C<isSPACE_LC>, C<isSPACE_LC_uvchr>, and C<isSPACE_LC_utf8_safe>.
0c82b6df 894
f16858ed
KW
895=for apidoc Amh|bool|isSPACE_A|int ch
896=for apidoc Amh|bool|isSPACE_L1|int ch
897=for apidoc Amh|bool|isSPACE_uvchr|int ch
898=for apidoc Amh|bool|isSPACE_utf8_safe|U8 * s|U8 * end
899=for apidoc Amh|bool|isSPACE_utf8|U8 * s
900=for apidoc Amh|bool|isSPACE_LC|int ch
901=for apidoc Amh|bool|isSPACE_LC_uvchr|int ch
902=for apidoc Amh|bool|isSPACE_LC_utf8_safe|U8 * s| U8 *end
903
398d098a
KW
904=for apidoc Am|bool|isPSXSPC|char ch
905(short for Posix Space)
779cf272
KW
906Starting in 5.18, this is identical in all its forms to the
907corresponding C<isSPACE()> macros.
398d098a
KW
908The locale forms of this macro are identical to their corresponding
909C<isSPACE()> forms in all Perl releases. In releases prior to 5.18, the
910non-locale forms differ from their C<isSPACE()> forms only in that the
911C<isSPACE()> forms don't match a Vertical Tab, and the C<isPSXSPC()> forms do.
912Otherwise they are identical. Thus this macro is analogous to what
913C<m/[[:space:]]/> matches in a regular expression.
dcccc8ff 914See the L<top of this section|/Character classification> for an explanation of
da8c1a98
KW
915variants C<isPSXSPC_A>, C<isPSXSPC_L1>, C<isPSXSPC_uvchr>, C<isPSXSPC_utf8_safe>,
916C<isPSXSPC_LC>, C<isPSXSPC_LC_uvchr>, and C<isPSXSPC_LC_utf8_safe>.
398d098a 917
f16858ed
KW
918=for apidoc Amh|bool|isPSXSPC_A|int ch
919=for apidoc Amh|bool|isPSXSPC_L1|int ch
920=for apidoc Amh|bool|isPSXSPC_uvchr|int ch
921=for apidoc Amh|bool|isPSXSPC_utf8_safe|U8 * s|U8 * end
922=for apidoc Amh|bool|isPSXSPC_utf8|U8 * s
923=for apidoc Amh|bool|isPSXSPC_LC|int ch
924=for apidoc Amh|bool|isPSXSPC_LC_uvchr|int ch
925=for apidoc Amh|bool|isPSXSPC_LC_utf8_safe|U8 * s| U8 *end
926
954c1994 927=for apidoc Am|bool|isUPPER|char ch
2787a470 928Returns a boolean indicating whether the specified character is an
6aff1f14 929uppercase character, analogous to C<m/[[:upper:]]/>.
dcccc8ff 930See the L<top of this section|/Character classification> for an explanation of
da8c1a98
KW
931variants C<isUPPER_A>, C<isUPPER_L1>, C<isUPPER_uvchr>, C<isUPPER_utf8_safe>,
932C<isUPPER_LC>, C<isUPPER_LC_uvchr>, and C<isUPPER_LC_utf8_safe>.
954c1994 933
f16858ed
KW
934=for apidoc Amh|bool|isUPPER_A|int ch
935=for apidoc Amh|bool|isUPPER_L1|int ch
936=for apidoc Amh|bool|isUPPER_uvchr|int ch
937=for apidoc Amh|bool|isUPPER_utf8_safe|U8 * s|U8 * end
938=for apidoc Amh|bool|isUPPER_utf8|U8 * s
939=for apidoc Amh|bool|isUPPER_LC|int ch
940=for apidoc Amh|bool|isUPPER_LC_uvchr|int ch
941=for apidoc Amh|bool|isUPPER_LC_utf8_safe|U8 * s| U8 *end
942
243effed 943=for apidoc Am|bool|isPRINT|char ch
8eea39dd 944Returns a boolean indicating whether the specified character is a
6aff1f14 945printable character, analogous to C<m/[[:print:]]/>.
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KW
946See the L<top of this section|/Character classification> for an explanation of
947variants
da8c1a98
KW
948C<isPRINT_A>, C<isPRINT_L1>, C<isPRINT_uvchr>, C<isPRINT_utf8_safe>,
949C<isPRINT_LC>, C<isPRINT_LC_uvchr>, and C<isPRINT_LC_utf8_safe>.
243effed 950
f16858ed
KW
951=for apidoc Amh|bool|isPRINT_A|int ch
952=for apidoc Amh|bool|isPRINT_L1|int ch
953=for apidoc Amh|bool|isPRINT_uvchr|int ch
954=for apidoc Amh|bool|isPRINT_utf8_safe|U8 * s|U8 * end
955=for apidoc Amh|bool|isPRINT_utf8|U8 * s
956=for apidoc Amh|bool|isPRINT_LC|int ch
957=for apidoc Amh|bool|isPRINT_LC_uvchr|int ch
958=for apidoc Amh|bool|isPRINT_LC_utf8_safe|U8 * s| U8 *end
959
243effed
KW
960=for apidoc Am|bool|isWORDCHAR|char ch
961Returns a boolean indicating whether the specified character is a character
962that is a word character, analogous to what C<m/\w/> and C<m/[[:word:]]/> match
963in a regular expression. A word character is an alphabetic character, a
964decimal digit, a connecting punctuation character (such as an underscore), or
965a "mark" character that attaches to one of those (like some sort of accent).
966C<isALNUM()> is a synonym provided for backward compatibility, even though a
967word character includes more than the standard C language meaning of
968alphanumeric.
dcccc8ff 969See the L<top of this section|/Character classification> for an explanation of
da8c1a98
KW
970variants C<isWORDCHAR_A>, C<isWORDCHAR_L1>, C<isWORDCHAR_uvchr>, and
971C<isWORDCHAR_utf8_safe>. C<isWORDCHAR_LC>, C<isWORDCHAR_LC_uvchr>, and
972C<isWORDCHAR_LC_utf8_safe> are also as described there, but additionally
973include the platform's native underscore.
8a58bdcf 974
f16858ed
KW
975=for apidoc Amh|bool|isWORDCHAR_A|int ch
976=for apidoc Amh|bool|isWORDCHAR_L1|int ch
977=for apidoc Amh|bool|isWORDCHAR_uvchr|int ch
978=for apidoc Amh|bool|isWORDCHAR_utf8_safe|U8 * s|U8 * end
979=for apidoc Amh|bool|isWORDCHAR_utf8|U8 * s
980=for apidoc Amh|bool|isWORDCHAR_LC|int ch
981=for apidoc Amh|bool|isWORDCHAR_LC_uvchr|int ch
982=for apidoc Amh|bool|isWORDCHAR_LC_utf8_safe|U8 * s| U8 *end
983=for apidoc Amh|bool|isALNUM|int ch
984=for apidoc Amh|bool|isALNUM_A|int ch
985=for apidoc Amh|bool|isALNUM_LC|int ch
986=for apidoc Amh|bool|isALNUM_LC_uvchr|int ch
987
8a58bdcf
KW
988=for apidoc Am|bool|isXDIGIT|char ch
989Returns a boolean indicating whether the specified character is a hexadecimal
243effed
KW
990digit. In the ASCII range these are C<[0-9A-Fa-f]>. Variants C<isXDIGIT_A()>
991and C<isXDIGIT_L1()> are identical to C<isXDIGIT()>.
dcccc8ff
KW
992See the L<top of this section|/Character classification> for an explanation of
993variants
da8c1a98
KW
994C<isXDIGIT_uvchr>, C<isXDIGIT_utf8_safe>, C<isXDIGIT_LC>, C<isXDIGIT_LC_uvchr>,
995and C<isXDIGIT_LC_utf8_safe>.
243effed 996
f16858ed
KW
997=for apidoc Amh|bool|isXDIGIT_A|int ch
998=for apidoc Amh|bool|isXDIGIT_L1|int ch
999=for apidoc Amh|bool|isXDIGIT_uvchr|int ch
1000=for apidoc Amh|bool|isXDIGIT_utf8_safe|U8 * s|U8 * end
1001=for apidoc Amh|bool|isXDIGIT_utf8|U8 * s
1002=for apidoc Amh|bool|isXDIGIT_LC|int ch
1003=for apidoc Amh|bool|isXDIGIT_LC_uvchr|int ch
1004=for apidoc Amh|bool|isXDIGIT_LC_utf8_safe|U8 * s| U8 *end
1005
3c3ecf18
KW
1006=for apidoc Am|bool|isIDFIRST|char ch
1007Returns a boolean indicating whether the specified character can be the first
1008character of an identifier. This is very close to, but not quite the same as
1009the official Unicode property C<XID_Start>. The difference is that this
1010returns true only if the input character also matches L</isWORDCHAR>.
dcccc8ff
KW
1011See the L<top of this section|/Character classification> for an explanation of
1012variants
da8c1a98
KW
1013C<isIDFIRST_A>, C<isIDFIRST_L1>, C<isIDFIRST_uvchr>, C<isIDFIRST_utf8_safe>,
1014C<isIDFIRST_LC>, C<isIDFIRST_LC_uvchr>, and C<isIDFIRST_LC_utf8_safe>.
3c3ecf18 1015
f16858ed
KW
1016=for apidoc Amh|bool|isIDFIRST_A|int ch
1017=for apidoc Amh|bool|isIDFIRST_L1|int ch
1018=for apidoc Amh|bool|isIDFIRST_uvchr|int ch
1019=for apidoc Amh|bool|isIDFIRST_utf8_safe|U8 * s|U8 * end
1020=for apidoc Amh|bool|isIDFIRST_utf8|U8 * s
1021=for apidoc Amh|bool|isIDFIRST_LC|int ch
1022=for apidoc Amh|bool|isIDFIRST_LC_uvchr|int ch
1023=for apidoc Amh|bool|isIDFIRST_LC_utf8_safe|U8 * s| U8 *end
1024
3c3ecf18
KW
1025=for apidoc Am|bool|isIDCONT|char ch
1026Returns a boolean indicating whether the specified character can be the
1027second or succeeding character of an identifier. This is very close to, but
1028not quite the same as the official Unicode property C<XID_Continue>. The
1029difference is that this returns true only if the input character also matches
dcccc8ff
KW
1030L</isWORDCHAR>. See the L<top of this section|/Character classification> for
1031an
d0da05db 1032explanation of variants C<isIDCONT_A>, C<isIDCONT_L1>, C<isIDCONT_uvchr>,
da8c1a98
KW
1033C<isIDCONT_utf8_safe>, C<isIDCONT_LC>, C<isIDCONT_LC_uvchr>, and
1034C<isIDCONT_LC_utf8_safe>.
3c3ecf18 1035
f16858ed
KW
1036=for apidoc Amh|bool|isIDCONT_A|int ch
1037=for apidoc Amh|bool|isIDCONT_L1|int ch
1038=for apidoc Amh|bool|isIDCONT_uvchr|int ch
1039=for apidoc Amh|bool|isIDCONT_utf8_safe|U8 * s|U8 * end
1040=for apidoc Amh|bool|isIDCONT_utf8|U8 * s
1041=for apidoc Amh|bool|isIDCONT_LC|int ch
1042=for apidoc Amh|bool|isIDCONT_LC_uvchr|int ch
1043=for apidoc Amh|bool|isIDCONT_LC_utf8_safe|U8 * s| U8 *end
1044
243effed 1045=head1 Miscellaneous Functions
8eea39dd 1046
95a59cab 1047=for apidoc Am|U8|READ_XDIGIT|char str*
243effed 1048Returns the value of an ASCII-range hex digit and advances the string pointer.
95a59cab
YO
1049Behaviour is only well defined when isXDIGIT(*str) is true.
1050
e7c1e6c1 1051=head1 Character case changing
21da7284
KW
1052Perl uses "full" Unicode case mappings. This means that converting a single
1053character to another case may result in a sequence of more than one character.
1054For example, the uppercase of C<E<223>> (LATIN SMALL LETTER SHARP S) is the two
1055character sequence C<SS>. This presents some complications The lowercase of
1056all characters in the range 0..255 is a single character, and thus
1057C<L</toLOWER_L1>> is furnished. But, C<toUPPER_L1> can't exist, as it couldn't
1058return a valid result for all legal inputs. Instead C<L</toUPPER_uvchr>> has
1059an API that does allow every possible legal result to be returned.) Likewise
1060no other function that is crippled by not being able to give the correct
1061results for the full range of possible inputs has been implemented here.
e7c1e6c1 1062
d713f9d9 1063=for apidoc Am|U8|toUPPER|int ch
1f607577
KW
1064Converts the specified character to uppercase. If the input is anything but an
1065ASCII lowercase character, that input character itself is returned. Variant
c753c8d3 1066C<toUPPER_A> is equivalent.
954c1994 1067
d0da05db
KW
1068=for apidoc Am|UV|toUPPER_uvchr|UV cp|U8* s|STRLEN* lenp
1069Converts the code point C<cp> to its uppercase version, and
1070stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. The code
1071point is interpreted as native if less than 256; otherwise as Unicode. Note
1f607577
KW
1072that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1073bytes since the uppercase version may be longer than the original character.
1074
1075The first code point of the uppercased version is returned
21da7284
KW
1076(but note, as explained at L<the top of this section|/Character case
1077changing>, that there may be more.)
1f607577 1078
a239b1e2
KW
1079=for apidoc Am|UV|toUPPER_utf8_safe|U8* p|U8* e|U8* s|STRLEN* lenp
1080Converts the first UTF-8 encoded character in the sequence starting at C<p> and
1081extending no further than S<C<e - 1>> to its uppercase version, and
1f607577
KW
1082stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
1083that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1084bytes since the uppercase version may be longer than the original character.
1085
1086The first code point of the uppercased version is returned
21da7284
KW
1087(but note, as explained at L<the top of this section|/Character case
1088changing>, that there may be more).
1f607577 1089
a239b1e2
KW
1090The suffix C<_safe> in the function's name indicates that it will not attempt
1091to read beyond S<C<e - 1>>, provided that the constraint S<C<s E<lt> e>> is
1092true (this is asserted for in C<-DDEBUGGING> builds). If the UTF-8 for the
1093input character is malformed in some way, the program may croak, or the
1094function may return the REPLACEMENT CHARACTER, at the discretion of the
1095implementation, and subject to change in future releases.
1096
1097=for apidoc Am|UV|toUPPER_utf8|U8* p|U8* s|STRLEN* lenp
1098This is like C<L</toUPPER_utf8_safe>>, but doesn't have the C<e>
1099parameter The function therefore can't check if it is reading
8b4b30c5 1100beyond the end of the string. Starting in Perl v5.32, it will take the C<e>
607313a1
KW
1101parameter, becoming a synonym for C<toUPPER_utf8_safe>. At that time every
1102program that uses it will have to be changed to successfully compile. In the
1103meantime, the first runtime call to C<toUPPER_utf8> from each call point in the
1104program will raise a deprecation warning, enabled by default. You can convert
1105your program now to use C<toUPPER_utf8_safe>, and avoid the warnings, and get an
8b4b30c5 1106extra measure of protection, or you can wait until v5.32, when you'll be forced
607313a1 1107to add the C<e> parameter.
1f607577 1108
25200305
KW
1109=for apidoc Am|U8|toFOLD|U8 ch
1110Converts the specified character to foldcase. If the input is anything but an
1111ASCII uppercase character, that input character itself is returned. Variant
1112C<toFOLD_A> is equivalent. (There is no equivalent C<to_FOLD_L1> for the full
d0da05db 1113Latin1 range, as the full generality of L</toFOLD_uvchr> is needed there.)
25200305 1114
d0da05db
KW
1115=for apidoc Am|UV|toFOLD_uvchr|UV cp|U8* s|STRLEN* lenp
1116Converts the code point C<cp> to its foldcase version, and
1117stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. The code
1118point is interpreted as native if less than 256; otherwise as Unicode. Note
1f607577
KW
1119that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1120bytes since the foldcase version may be longer than the original character.
1121
1122The first code point of the foldcased version is returned
21da7284
KW
1123(but note, as explained at L<the top of this section|/Character case
1124changing>, that there may be more).
1f607577 1125
a239b1e2
KW
1126=for apidoc Am|UV|toFOLD_utf8_safe|U8* p|U8* e|U8* s|STRLEN* lenp
1127Converts the first UTF-8 encoded character in the sequence starting at C<p> and
1128extending no further than S<C<e - 1>> to its foldcase version, and
1f607577
KW
1129stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
1130that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1131bytes since the foldcase version may be longer than the original character.
1132
1133The first code point of the foldcased version is returned
21da7284
KW
1134(but note, as explained at L<the top of this section|/Character case
1135changing>, that there may be more).
1f607577 1136
a239b1e2
KW
1137The suffix C<_safe> in the function's name indicates that it will not attempt
1138to read beyond S<C<e - 1>>, provided that the constraint S<C<s E<lt> e>> is
1139true (this is asserted for in C<-DDEBUGGING> builds). If the UTF-8 for the
1140input character is malformed in some way, the program may croak, or the
1141function may return the REPLACEMENT CHARACTER, at the discretion of the
1142implementation, and subject to change in future releases.
1143
1144=for apidoc Am|UV|toFOLD_utf8|U8* p|U8* s|STRLEN* lenp
1145This is like C<L</toFOLD_utf8_safe>>, but doesn't have the C<e>
1146parameter The function therefore can't check if it is reading
8b4b30c5 1147beyond the end of the string. Starting in Perl v5.32, it will take the C<e>
607313a1
KW
1148parameter, becoming a synonym for C<toFOLD_utf8_safe>. At that time every
1149program that uses it will have to be changed to successfully compile. In the
1150meantime, the first runtime call to C<toFOLD_utf8> from each call point in the
1151program will raise a deprecation warning, enabled by default. You can convert
1152your program now to use C<toFOLD_utf8_safe>, and avoid the warnings, and get an
8b4b30c5 1153extra measure of protection, or you can wait until v5.32, when you'll be forced
607313a1 1154to add the C<e> parameter.
1f607577
KW
1155
1156=for apidoc Am|U8|toLOWER|U8 ch
1157Converts the specified character to lowercase. If the input is anything but an
1158ASCII uppercase character, that input character itself is returned. Variant
c753c8d3 1159C<toLOWER_A> is equivalent.
954c1994 1160
1f607577 1161=for apidoc Am|U8|toLOWER_L1|U8 ch
b7d90381
KW
1162Converts the specified Latin1 character to lowercase. The results are
1163undefined if the input doesn't fit in a byte.
1f607577
KW
1164
1165=for apidoc Am|U8|toLOWER_LC|U8 ch
1166Converts the specified character to lowercase using the current locale's rules,
1167if possible; otherwise returns the input character itself.
1168
d0da05db
KW
1169=for apidoc Am|UV|toLOWER_uvchr|UV cp|U8* s|STRLEN* lenp
1170Converts the code point C<cp> to its lowercase version, and
1171stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. The code
1172point is interpreted as native if less than 256; otherwise as Unicode. Note
1f607577
KW
1173that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1174bytes since the lowercase version may be longer than the original character.
1175
1176The first code point of the lowercased version is returned
21da7284
KW
1177(but note, as explained at L<the top of this section|/Character case
1178changing>, that there may be more).
1f607577 1179
a239b1e2
KW
1180
1181=for apidoc Am|UV|toLOWER_utf8_safe|U8* p|U8* e|U8* s|STRLEN* lenp
1182Converts the first UTF-8 encoded character in the sequence starting at C<p> and
1183extending no further than S<C<e - 1>> to its lowercase version, and
1f607577
KW
1184stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
1185that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1186bytes since the lowercase version may be longer than the original character.
1187
1188The first code point of the lowercased version is returned
21da7284
KW
1189(but note, as explained at L<the top of this section|/Character case
1190changing>, that there may be more).
1f607577 1191
a239b1e2
KW
1192The suffix C<_safe> in the function's name indicates that it will not attempt
1193to read beyond S<C<e - 1>>, provided that the constraint S<C<s E<lt> e>> is
1194true (this is asserted for in C<-DDEBUGGING> builds). If the UTF-8 for the
1195input character is malformed in some way, the program may croak, or the
1196function may return the REPLACEMENT CHARACTER, at the discretion of the
1197implementation, and subject to change in future releases.
1198
1199=for apidoc Am|UV|toLOWER_utf8|U8* p|U8* s|STRLEN* lenp
1200This is like C<L</toLOWER_utf8_safe>>, but doesn't have the C<e>
1201parameter The function therefore can't check if it is reading
8b4b30c5 1202beyond the end of the string. Starting in Perl v5.32, it will take the C<e>
607313a1
KW
1203parameter, becoming a synonym for C<toLOWER_utf8_safe>. At that time every
1204program that uses it will have to be changed to successfully compile. In the
1205meantime, the first runtime call to C<toLOWER_utf8> from each call point in the
1206program will raise a deprecation warning, enabled by default. You can convert
1207your program now to use C<toLOWER_utf8_safe>, and avoid the warnings, and get an
8b4b30c5 1208extra measure of protection, or you can wait until v5.32, when you'll be forced
607313a1 1209to add the C<e> parameter.
1f607577 1210
25200305
KW
1211=for apidoc Am|U8|toTITLE|U8 ch
1212Converts the specified character to titlecase. If the input is anything but an
1213ASCII lowercase character, that input character itself is returned. Variant
b7d90381 1214C<toTITLE_A> is equivalent. (There is no C<toTITLE_L1> for the full Latin1
d0da05db 1215range, as the full generality of L</toTITLE_uvchr> is needed there. Titlecase is
b7d90381 1216not a concept used in locale handling, so there is no functionality for that.)
25200305 1217
d0da05db
KW
1218=for apidoc Am|UV|toTITLE_uvchr|UV cp|U8* s|STRLEN* lenp
1219Converts the code point C<cp> to its titlecase version, and
1220stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. The code
1221point is interpreted as native if less than 256; otherwise as Unicode. Note
1f607577
KW
1222that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1223bytes since the titlecase version may be longer than the original character.
1224
1225The first code point of the titlecased version is returned
21da7284
KW
1226(but note, as explained at L<the top of this section|/Character case
1227changing>, that there may be more).
1f607577 1228
a239b1e2
KW
1229=for apidoc Am|UV|toTITLE_utf8_safe|U8* p|U8* e|U8* s|STRLEN* lenp
1230Converts the first UTF-8 encoded character in the sequence starting at C<p> and
1231extending no further than S<C<e - 1>> to its titlecase version, and
1f607577
KW
1232stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
1233that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
1234bytes since the titlecase version may be longer than the original character.
1235
1236The first code point of the titlecased version is returned
21da7284
KW
1237(but note, as explained at L<the top of this section|/Character case
1238changing>, that there may be more).
1f607577 1239
a239b1e2
KW
1240The suffix C<_safe> in the function's name indicates that it will not attempt
1241to read beyond S<C<e - 1>>, provided that the constraint S<C<s E<lt> e>> is
1242true (this is asserted for in C<-DDEBUGGING> builds). If the UTF-8 for the
1243input character is malformed in some way, the program may croak, or the
1244function may return the REPLACEMENT CHARACTER, at the discretion of the
1245implementation, and subject to change in future releases.
1246
1247=for apidoc Am|UV|toTITLE_utf8|U8* p|U8* s|STRLEN* lenp
1248This is like C<L</toLOWER_utf8_safe>>, but doesn't have the C<e>
1249parameter The function therefore can't check if it is reading
8b4b30c5 1250beyond the end of the string. Starting in Perl v5.32, it will take the C<e>
607313a1
KW
1251parameter, becoming a synonym for C<toTITLE_utf8_safe>. At that time every
1252program that uses it will have to be changed to successfully compile. In the
1253meantime, the first runtime call to C<toTITLE_utf8> from each call point in the
1254program will raise a deprecation warning, enabled by default. You can convert
1255your program now to use C<toTITLE_utf8_safe>, and avoid the warnings, and get an
8b4b30c5 1256extra measure of protection, or you can wait until v5.32, when you'll be forced
607313a1 1257to add the C<e> parameter.
1f607577 1258
954c1994 1259=cut
353c9b6f 1260
d0da05db 1261XXX Still undocumented isVERTWS_uvchr and _utf8; it's unclear what their names
1e222e4f
KW
1262really should be. Also toUPPER_LC and toFOLD_LC, which are subject to change,
1263and aren't general purpose as they don't work on U+DF, and assert against that.
243effed 1264
8a58bdcf 1265Note that these macros are repeated in Devel::PPPort, so should also be
62fa66b6
KW
1266patched there. The file as of this writing is cpan/Devel-PPPort/parts/inc/misc
1267
954c1994
GS
1268*/
1269
8f5283f4
KW
1270/*
1271 void below because that's the best fit, and works for Devel::PPPort
1272=for apidoc AmnU|void|WIDEST_UTYPE
1273
1274Yields the widest unsigned integer type on the platform, currently either
1275C<U32> or C<64>. This can be used in declarations such as
1276
1277 WIDEST_UTYPE my_uv;
1278
1279or casts
1280
1281 my_uv = (WIDEST_UTYPE) val;
1282
1283=cut
1284
1285*/
de9e2639
KW
1286#ifdef QUADKIND
1287# define WIDEST_UTYPE U64
7c062697
KW
1288#else
1289# define WIDEST_UTYPE U32
1290#endif
1291
3912bc88
KW
1292/* FITS_IN_8_BITS(c) returns true if c doesn't have a bit set other than in
1293 * the lower 8. It is designed to be hopefully bomb-proof, making sure that no
1294 * bits of information are lost even on a 64-bit machine, but to get the
1295 * compiler to optimize it out if possible. This is because Configure makes
1296 * sure that the machine has an 8-bit byte, so if c is stored in a byte, the
1297 * sizeof() guarantees that this evaluates to a constant true at compile time.
7e75d1a1
JH
1298 *
1299 * For Coverity, be always true, because otherwise Coverity thinks
1300 * it finds several expressions that are always true, independent
1301 * of operands. Well, they are, but that is kind of the point.
220c71bf 1302 */
7e75d1a1 1303#ifndef __COVERITY__
6c5b02ac
KW
1304 /* The '| 0' part ensures a compiler error if c is not integer (like e.g., a
1305 * pointer) */
1306#define FITS_IN_8_BITS(c) ( (sizeof(c) == 1) \
ace3ad0f 1307 || !(((WIDEST_UTYPE)((c) | 0)) & ~0xFF))
7e75d1a1
JH
1308#else
1309#define FITS_IN_8_BITS(c) (1)
1310#endif
cf301eb7 1311
94250c4f
KW
1312/* Returns true if c is in the range l..u, where 'l' is non-negative
1313 * Written this way so that after optimization, only one conditional test is
1314 * needed.
1315 *
1316 * This isn't fully general, except for the special cased 'signed char' (which
1317 * should be resolved at compile time): It won't work if 'c' is negative, and
1318 * 'l' is larger than the max for that signed type. Thus if 'c' is a negative
1319 * int, and 'l' is larger than INT_MAX, it will fail. To protect agains this
1320 * happening, there is an assert that will generate a warning if c is larger
1321 * than e.g. INT_MAX if it is an 'unsigned int'. This could be a false
1322 * positive, but khw couldn't figure out a way to make it better. It's good
1323 * enough so far */
1324#define inRANGE(c, l, u) (__ASSERT_((l) >= 0) __ASSERT_((u) >= (l)) \
1325 ((sizeof(c) == 1) \
1326 ? (((WIDEST_UTYPE) ((((U8) (c))|0) - (l))) <= ((WIDEST_UTYPE) ((u) - (l)))) \
1327 : (__ASSERT_( (((WIDEST_UTYPE) 1) << (CHARBITS * sizeof(c) - 1) & (c)) \
1328 /* sign bit of c is 0 */ == 0 \
1329 || (((~ ((WIDEST_UTYPE) 1) << ((CHARBITS * sizeof(c) - 1) - 1))\
1330 /* l not larger than largest value in c's signed type */ \
1331 & ~ ((WIDEST_UTYPE) 0)) & (l)) == 0) \
1332 ((WIDEST_UTYPE) (((c) - (l)) | 0) <= ((WIDEST_UTYPE) ((u) - (l)))))))
305fe86e 1333
41f43cc2 1334#ifdef EBCDIC
b6340bd0 1335# ifndef _ALL_SOURCE
0852beac
KW
1336 /* The native libc isascii() et.al. functions return the wrong results
1337 * on at least z/OS unless this is defined. */
b6340bd0
KW
1338# error _ALL_SOURCE should probably be defined
1339# endif
41f43cc2 1340#else
0852beac
KW
1341 /* There is a simple definition of ASCII for ASCII platforms. But the
1342 * EBCDIC one isn't so simple, so is defined using table look-up like the
9c903d59 1343 * other macros below.
3f3c579d
KW
1344 *
1345 * The cast here is used instead of '(c) >= 0', because some compilers emit
1346 * a warning that that test is always true when the parameter is an
1347 * unsigned type. khw supposes that it could be written as
1348 * && ((c) == '\0' || (c) > 0)
1349 * to avoid the message, but the cast will likely avoid extra branches even
1350 * with stupid compilers.
1351 *
1352 * The '| 0' part ensures a compiler error if c is not integer (like e.g.,
1353 * a pointer) */
9c903d59 1354# define isASCII(c) ((WIDEST_UTYPE)((c) | 0) < 128)
41f43cc2
KW
1355#endif
1356
38694112
KW
1357/* Take the eight possible bit patterns of the lower 3 bits and you get the
1358 * lower 3 bits of the 8 octal digits, in both ASCII and EBCDIC, so those bits
1359 * can be ignored. If the rest match '0', we have an octal */
1360#define isOCTAL_A(c) (((WIDEST_UTYPE)((c) | 0) & ~7) == '0')
c2da0b36 1361
9fb1bf9d 1362#ifdef H_PERL /* If have access to perl.h, lookup in its table */
f4cdb42c 1363
a500dc72
KW
1364/* Character class numbers. For internal core Perl use only. The ones less
1365 * than 32 are used in PL_charclass[] and the ones up through the one that
1366 * corresponds to <_HIGHEST_REGCOMP_DOT_H_SYNC> are used by regcomp.h and
1367 * related files. PL_charclass ones use names used in l1_char_class_tab.h but
1368 * their actual definitions are here. If that file has a name not used here,
1369 * it won't compile.
1709d539
KW
1370 *
1371 * The first group of these is ordered in what I (khw) estimate to be the
31c7f561 1372 * frequency of their use. This gives a slight edge to exiting a loop earlier
58a3ba2c
KW
1373 * (in reginclass() in regexec.c). Except \v should be last, as it isn't a
1374 * real Posix character class, and some (small) inefficiencies in regular
1375 * expression handling would be introduced by putting it in the middle of those
1376 * that are. Also, cntrl and ascii come after the others as it may be useful
1377 * to group these which have no members that match above Latin1, (or above
1378 * ASCII in the latter case) */
1379
1709d539
KW
1380# define _CC_WORDCHAR 0 /* \w and [:word:] */
1381# define _CC_DIGIT 1 /* \d and [:digit:] */
1382# define _CC_ALPHA 2 /* [:alpha:] */
1383# define _CC_LOWER 3 /* [:lower:] */
1384# define _CC_UPPER 4 /* [:upper:] */
1385# define _CC_PUNCT 5 /* [:punct:] */
1386# define _CC_PRINT 6 /* [:print:] */
15861f94 1387# define _CC_ALPHANUMERIC 7 /* [:alnum:] */
1709d539 1388# define _CC_GRAPH 8 /* [:graph:] */
359b005e 1389# define _CC_CASED 9 /* [:lower:] or [:upper:] under /i */
779cf272 1390# define _CC_SPACE 10 /* \s, [:space:] */
34aeb2e9
KW
1391# define _CC_PSXSPC _CC_SPACE /* XXX Temporary, can be removed
1392 when the deprecated isFOO_utf8()
1393 functions are removed */
b0d691b2
KW
1394# define _CC_BLANK 11 /* [:blank:] */
1395# define _CC_XDIGIT 12 /* [:xdigit:] */
779cf272
KW
1396# define _CC_CNTRL 13 /* [:cntrl:] */
1397# define _CC_ASCII 14 /* [:ascii:] */
1398# define _CC_VERTSPACE 15 /* \v */
1709d539 1399
a0947d7b
KW
1400# define _HIGHEST_REGCOMP_DOT_H_SYNC _CC_VERTSPACE
1401
1709d539 1402/* The members of the third group below do not need to be coordinated with data
3ffc8c70 1403 * structures in regcomp.[ch] and regexec.c. */
779cf272
KW
1404# define _CC_IDFIRST 16
1405# define _CC_CHARNAME_CONT 17
1406# define _CC_NONLATIN1_FOLD 18
1407# define _CC_NONLATIN1_SIMPLE_FOLD 19
1408# define _CC_QUOTEMETA 20
1409# define _CC_NON_FINAL_FOLD 21
1410# define _CC_IS_IN_SOME_FOLD 22
1411# define _CC_MNEMONIC_CNTRL 23
073c22b3 1412
34aeb2e9
KW
1413# define _CC_IDCONT 24 /* XXX Temporary, can be removed when the deprecated
1414 isFOO_utf8() functions are removed */
1415
073c22b3
KW
1416/* This next group is only used on EBCDIC platforms, so theoretically could be
1417 * shared with something entirely different that's only on ASCII platforms */
5d5376e2
KW
1418# define _CC_UTF8_START_BYTE_IS_FOR_AT_LEAST_SURROGATE 28
1419# define _CC_UTF8_IS_START 29
1420# define _CC_UTF8_IS_DOWNGRADEABLE_START 30
1421# define _CC_UTF8_IS_CONTINUATION 31
1422/* Unused: 24-27
f4cdb42c
KW
1423 * If more bits are needed, one could add a second word for non-64bit
1424 * QUAD_IS_INT systems, using some #ifdefs to distinguish between having a 2nd
37ede926
KW
1425 * word or not. The IS_IN_SOME_FOLD bit is the most easily expendable, as it
1426 * is used only for optimization (as of this writing), and differs in the
1427 * Latin1 range from the ALPHA bit only in two relatively unimportant
a500dc72 1428 * characters: the masculine and feminine ordinal indicators, so removing it
073c22b3
KW
1429 * would just cause /i regexes which match them to run less efficiently.
1430 * Similarly the EBCDIC-only bits are used just for speed, and could be
1431 * replaced by other means */
96ac0975 1432
3a371f2f
KW
1433#if defined(PERL_CORE) || defined(PERL_EXT)
1434/* An enum version of the character class numbers, to help compilers
1435 * optimize */
1436typedef enum {
3a371f2f 1437 _CC_ENUM_ALPHA = _CC_ALPHA,
e8d596e0
KW
1438 _CC_ENUM_ALPHANUMERIC = _CC_ALPHANUMERIC,
1439 _CC_ENUM_ASCII = _CC_ASCII,
1440 _CC_ENUM_BLANK = _CC_BLANK,
b0d691b2 1441 _CC_ENUM_CASED = _CC_CASED,
e8d596e0 1442 _CC_ENUM_CNTRL = _CC_CNTRL,
3a371f2f
KW
1443 _CC_ENUM_DIGIT = _CC_DIGIT,
1444 _CC_ENUM_GRAPH = _CC_GRAPH,
1445 _CC_ENUM_LOWER = _CC_LOWER,
1446 _CC_ENUM_PRINT = _CC_PRINT,
1447 _CC_ENUM_PUNCT = _CC_PUNCT,
e8d596e0 1448 _CC_ENUM_SPACE = _CC_SPACE,
3a371f2f 1449 _CC_ENUM_UPPER = _CC_UPPER,
e8d596e0 1450 _CC_ENUM_VERTSPACE = _CC_VERTSPACE,
3a371f2f 1451 _CC_ENUM_WORDCHAR = _CC_WORDCHAR,
e8d596e0 1452 _CC_ENUM_XDIGIT = _CC_XDIGIT
3a371f2f
KW
1453} _char_class_number;
1454#endif
1455
86f72d56 1456#define POSIX_CC_COUNT (_HIGHEST_REGCOMP_DOT_H_SYNC + 1)
63c61c3f 1457
6635f04f 1458START_EXTERN_C
96ac0975
NC
1459# ifdef DOINIT
1460EXTCONST U32 PL_charclass[] = {
1461# include "l1_char_class_tab.h"
1462};
1463
1464# else /* ! DOINIT */
1465EXTCONST U32 PL_charclass[];
1466# endif
6635f04f 1467END_EXTERN_C
96ac0975 1468
265c1f46 1469 /* The 1U keeps Solaris from griping when shifting sets the uppermost bit */
430b7c70 1470# define _CC_mask(classnum) (1U << (classnum))
4650c663
KW
1471
1472 /* For internal core Perl use only: the base macro for defining macros like
1473 * isALPHA */
ff7ecfc3 1474# define _generic_isCC(c, classnum) cBOOL(FITS_IN_8_BITS(c) \
f4cd282c 1475 && (PL_charclass[(U8) (c)] & _CC_mask(classnum)))
4eeeb416 1476
f4cdb42c
KW
1477 /* The mask for the _A versions of the macros; it just adds in the bit for
1478 * ASCII. */
1479# define _CC_mask_A(classnum) (_CC_mask(classnum) | _CC_mask(_CC_ASCII))
1480
4650c663
KW
1481 /* For internal core Perl use only: the base macro for defining macros like
1482 * isALPHA_A. The foo_A version makes sure that both the desired bit and
1483 * the ASCII bit are present */
b7d90381
KW
1484# define _generic_isCC_A(c, classnum) (FITS_IN_8_BITS(c) \
1485 && ((PL_charclass[(U8) (c)] & _CC_mask_A(classnum)) \
1486 == _CC_mask_A(classnum)))
f4cdb42c 1487
26c1d9d8
KW
1488/* On ASCII platforms certain classes form a single range. It's faster to
1489 * special case these. isDIGIT is a single range on all platforms */
b877c1ff
KW
1490# ifdef EBCDIC
1491# define isALPHA_A(c) _generic_isCC_A(c, _CC_ALPHA)
1492# define isGRAPH_A(c) _generic_isCC_A(c, _CC_GRAPH)
1493# define isLOWER_A(c) _generic_isCC_A(c, _CC_LOWER)
1494# define isPRINT_A(c) _generic_isCC_A(c, _CC_PRINT)
1495# define isUPPER_A(c) _generic_isCC_A(c, _CC_UPPER)
1496# else
26c1d9d8 1497 /* By folding the upper and lowercase, we can use a single range */
b877c1ff 1498# define isALPHA_A(c) inRANGE((~('A' ^ 'a') & (c)), 'A', 'Z')
26c1d9d8 1499# define isGRAPH_A(c) inRANGE(c, ' ' + 1, 0x7e)
b877c1ff
KW
1500# define isLOWER_A(c) inRANGE(c, 'a', 'z')
1501# define isPRINT_A(c) inRANGE(c, ' ', 0x7e)
1502# define isUPPER_A(c) inRANGE(c, 'A', 'Z')
1503# endif
15861f94 1504# define isALPHANUMERIC_A(c) _generic_isCC_A(c, _CC_ALPHANUMERIC)
f4cdb42c
KW
1505# define isBLANK_A(c) _generic_isCC_A(c, _CC_BLANK)
1506# define isCNTRL_A(c) _generic_isCC_A(c, _CC_CNTRL)
b877c1ff 1507# define isDIGIT_A(c) inRANGE(c, '0', '9')
f4cdb42c
KW
1508# define isPUNCT_A(c) _generic_isCC_A(c, _CC_PUNCT)
1509# define isSPACE_A(c) _generic_isCC_A(c, _CC_SPACE)
f4cdb42c 1510# define isWORDCHAR_A(c) _generic_isCC_A(c, _CC_WORDCHAR)
b7d90381
KW
1511# define isXDIGIT_A(c) _generic_isCC(c, _CC_XDIGIT) /* No non-ASCII xdigits
1512 */
d95f8b6a 1513# define isIDFIRST_A(c) _generic_isCC_A(c, _CC_IDFIRST)
3ded5eb0
KW
1514# define isALPHA_L1(c) _generic_isCC(c, _CC_ALPHA)
1515# define isALPHANUMERIC_L1(c) _generic_isCC(c, _CC_ALPHANUMERIC)
1516# define isBLANK_L1(c) _generic_isCC(c, _CC_BLANK)
1517
1518 /* continuation character for legal NAME in \N{NAME} */
1519# define isCHARNAME_CONT(c) _generic_isCC(c, _CC_CHARNAME_CONT)
1520
1521# define isCNTRL_L1(c) _generic_isCC(c, _CC_CNTRL)
1522# define isGRAPH_L1(c) _generic_isCC(c, _CC_GRAPH)
1523# define isLOWER_L1(c) _generic_isCC(c, _CC_LOWER)
1524# define isPRINT_L1(c) _generic_isCC(c, _CC_PRINT)
b7d90381 1525# define isPSXSPC_L1(c) isSPACE_L1(c)
3ded5eb0
KW
1526# define isPUNCT_L1(c) _generic_isCC(c, _CC_PUNCT)
1527# define isSPACE_L1(c) _generic_isCC(c, _CC_SPACE)
1528# define isUPPER_L1(c) _generic_isCC(c, _CC_UPPER)
1529# define isWORDCHAR_L1(c) _generic_isCC(c, _CC_WORDCHAR)
1530# define isIDFIRST_L1(c) _generic_isCC(c, _CC_IDFIRST)
f4cdb42c 1531
0852beac
KW
1532# ifdef EBCDIC
1533# define isASCII(c) _generic_isCC(c, _CC_ASCII)
1534# endif
1535
f12c0118
KW
1536 /* Participates in a single-character fold with a character above 255 */
1537# 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)))
1538
1539 /* Like the above, but also can be part of a multi-char fold */
f4cd282c 1540# 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)))
430b7c70 1541
4eeeb416 1542# define _isQUOTEMETA(c) _generic_isCC(c, _CC_QUOTEMETA)
26faadbd 1543# define _IS_NON_FINAL_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
b7d90381 1544 _generic_isCC(c, _CC_NON_FINAL_FOLD)
37ede926 1545# define _IS_IN_SOME_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
b7d90381 1546 _generic_isCC(c, _CC_IS_IN_SOME_FOLD)
8e35b056
KW
1547# define _IS_MNEMONIC_CNTRL_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) \
1548 _generic_isCC(c, _CC_MNEMONIC_CNTRL)
687c8d01 1549#else /* else we don't have perl.h H_PERL */
3ded5eb0
KW
1550
1551 /* If we don't have perl.h, we are compiling a utility program. Below we
1552 * hard-code various macro definitions that wouldn't otherwise be available
fc273927 1553 * to it. Most are coded based on first principles. These are written to
74665a89 1554 * avoid EBCDIC vs. ASCII #ifdef's as much as possible. */
182c4ace 1555# define isDIGIT_A(c) inRANGE(c, '0', '9')
0852beac 1556# define isBLANK_A(c) ((c) == ' ' || (c) == '\t')
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1557# define isSPACE_A(c) (isBLANK_A(c) \
1558 || (c) == '\n' \
1559 || (c) == '\r' \
1560 || (c) == '\v' \
0852beac 1561 || (c) == '\f')
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1562 /* On EBCDIC, there are gaps between 'i' and 'j'; 'r' and 's'. Same for
1563 * uppercase. The tests for those aren't necessary on ASCII, but hurt only
1564 * performance (if optimization isn't on), and allow the same code to be
1565 * used for both platform types */
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1566# define isLOWER_A(c) inRANGE((c), 'a', 'i') \
1567 || inRANGE((c), 'j', 'r') \
1568 || inRANGE((c), 's', 'z')
1569# define isUPPER_A(c) inRANGE((c), 'A', 'I') \
1570 || inRANGE((c), 'J', 'R') \
1571 || inRANGE((c), 'S', 'Z')
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1572# define isALPHA_A(c) (isUPPER_A(c) || isLOWER_A(c))
1573# define isALPHANUMERIC_A(c) (isALPHA_A(c) || isDIGIT_A(c))
3ded5eb0 1574# define isWORDCHAR_A(c) (isALPHANUMERIC_A(c) || (c) == '_')
0852beac 1575# define isIDFIRST_A(c) (isALPHA_A(c) || (c) == '_')
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1576# define isXDIGIT_A(c) ( isDIGIT_A(c) \
1577 || inRANGE((c), 'a', 'f') \
1578 || inRANGE((c), 'A', 'F')
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1579# define isPUNCT_A(c) ((c) == '-' || (c) == '!' || (c) == '"' \
1580 || (c) == '#' || (c) == '$' || (c) == '%' \
1581 || (c) == '&' || (c) == '\'' || (c) == '(' \
1582 || (c) == ')' || (c) == '*' || (c) == '+' \
1583 || (c) == ',' || (c) == '.' || (c) == '/' \
1584 || (c) == ':' || (c) == ';' || (c) == '<' \
1585 || (c) == '=' || (c) == '>' || (c) == '?' \
1586 || (c) == '@' || (c) == '[' || (c) == '\\' \
1587 || (c) == ']' || (c) == '^' || (c) == '_' \
1588 || (c) == '`' || (c) == '{' || (c) == '|' \
1589 || (c) == '}' || (c) == '~')
1590# define isGRAPH_A(c) (isALPHANUMERIC_A(c) || isPUNCT_A(c))
1591# define isPRINT_A(c) (isGRAPH_A(c) || (c) == ' ')
3ded5eb0 1592
0852beac 1593# ifdef EBCDIC
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1594 /* The below is accurate for the 3 EBCDIC code pages traditionally
1595 * supported by perl. The only difference between them in the controls
1596 * is the position of \n, and that is represented symbolically below */
1597# define isCNTRL_A(c) ((c) == '\0' || (c) == '\a' || (c) == '\b' \
1598 || (c) == '\f' || (c) == '\n' || (c) == '\r' \
1599 || (c) == '\t' || (c) == '\v' \
182c4ace 1600 || inRANGE((c), 1, 3) /* SOH, STX, ETX */ \
74665a89 1601 || (c) == 7 /* U+7F DEL */ \
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1602 || inRANGE((c), 0x0E, 0x13) /* SO SI DLE \
1603 DC[1-3] */ \
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1604 || (c) == 0x18 /* U+18 CAN */ \
1605 || (c) == 0x19 /* U+19 EOM */ \
182c4ace 1606 || inRANGE((c), 0x1C, 0x1F) /* [FGRU]S */ \
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1607 || (c) == 0x26 /* U+17 ETB */ \
1608 || (c) == 0x27 /* U+1B ESC */ \
1609 || (c) == 0x2D /* U+05 ENQ */ \
1610 || (c) == 0x2E /* U+06 ACK */ \
1611 || (c) == 0x32 /* U+16 SYN */ \
1612 || (c) == 0x37 /* U+04 EOT */ \
1613 || (c) == 0x3C /* U+14 DC4 */ \
1614 || (c) == 0x3D /* U+15 NAK */ \
1615 || (c) == 0x3F)/* U+1A SUB */
0852beac 1616# define isASCII(c) (isCNTRL_A(c) || isPRINT_A(c))
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1617# else /* isASCII is already defined for ASCII platforms, so can use that to
1618 define isCNTRL */
1619# define isCNTRL_A(c) (isASCII(c) && ! isPRINT_A(c))
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1620# endif
1621
3ffc8c70 1622 /* The _L1 macros may be unnecessary for the utilities; I (khw) added them
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1623 * during debugging, and it seems best to keep them. We may be called
1624 * without NATIVE_TO_LATIN1 being defined. On ASCII platforms, it doesn't
1625 * do anything anyway, so make it not a problem */
1626# if ! defined(EBCDIC) && ! defined(NATIVE_TO_LATIN1)
1627# define NATIVE_TO_LATIN1(ch) (ch)
1628# endif
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1629# define isALPHA_L1(c) (isUPPER_L1(c) || isLOWER_L1(c))
1630# define isALPHANUMERIC_L1(c) (isALPHA_L1(c) || isDIGIT_A(c))
1631# define isBLANK_L1(c) (isBLANK_A(c) \
1632 || (FITS_IN_8_BITS(c) \
1633 && NATIVE_TO_LATIN1((U8) c) == 0xA0))
1634# define isCNTRL_L1(c) (FITS_IN_8_BITS(c) && (! isPRINT_L1(c)))
1635# define isGRAPH_L1(c) (isPRINT_L1(c) && (! isBLANK_L1(c)))
1636# define isLOWER_L1(c) (isLOWER_A(c) \
1637 || (FITS_IN_8_BITS(c) \
ae683a5f 1638 && (( NATIVE_TO_LATIN1((U8) c) >= 0xDF \
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1639 && NATIVE_TO_LATIN1((U8) c) != 0xF7) \
1640 || NATIVE_TO_LATIN1((U8) c) == 0xAA \
1641 || NATIVE_TO_LATIN1((U8) c) == 0xBA \
1642 || NATIVE_TO_LATIN1((U8) c) == 0xB5)))
1643# define isPRINT_L1(c) (isPRINT_A(c) \
1644 || (FITS_IN_8_BITS(c) \
1645 && NATIVE_TO_LATIN1((U8) c) >= 0xA0))
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1646# define isPUNCT_L1(c) (isPUNCT_A(c) \
1647 || (FITS_IN_8_BITS(c) \
ae683a5f 1648 && ( NATIVE_TO_LATIN1((U8) c) == 0xA1 \
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1649 || NATIVE_TO_LATIN1((U8) c) == 0xA7 \
1650 || NATIVE_TO_LATIN1((U8) c) == 0xAB \
1651 || NATIVE_TO_LATIN1((U8) c) == 0xB6 \
1652 || NATIVE_TO_LATIN1((U8) c) == 0xB7 \
1653 || NATIVE_TO_LATIN1((U8) c) == 0xBB \
1654 || NATIVE_TO_LATIN1((U8) c) == 0xBF)))
1655# define isSPACE_L1(c) (isSPACE_A(c) \
1656 || (FITS_IN_8_BITS(c) \
ae683a5f 1657 && ( NATIVE_TO_LATIN1((U8) c) == 0x85 \
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1658 || NATIVE_TO_LATIN1((U8) c) == 0xA0)))
1659# define isUPPER_L1(c) (isUPPER_A(c) \
1660 || (FITS_IN_8_BITS(c) \
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1661 && ( IN_RANGE(NATIVE_TO_LATIN1((U8) c), \
1662 0xC0, 0xDE) \
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1663 && NATIVE_TO_LATIN1((U8) c) != 0xD7)))
1664# define isWORDCHAR_L1(c) (isIDFIRST_L1(c) || isDIGIT_A(c))
1665# define isIDFIRST_L1(c) (isALPHA_L1(c) || NATIVE_TO_LATIN1(c) == '_')
1666# define isCHARNAME_CONT(c) (isWORDCHAR_L1(c) \
1667 || isBLANK_L1(c) \
1668 || (c) == '-' \
1669 || (c) == '(' \
1670 || (c) == ')')
1671 /* The following are not fully accurate in the above-ASCII range. I (khw)
1672 * don't think it's necessary to be so for the purposes where this gets
1673 * compiled */
1674# define _isQUOTEMETA(c) (FITS_IN_8_BITS(c) && ! isWORDCHAR_L1(c))
1675# define _IS_IN_SOME_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) isALPHA_L1(c)
1676
1677 /* And these aren't accurate at all. They are useful only for above
1678 * Latin1, which utilities and bootstrapping don't deal with */
1679# define _IS_NON_FINAL_FOLD_ONLY_FOR_USE_BY_REGCOMP_DOT_C(c) 0
6838b41e 1680# define _HAS_NONLATIN1_SIMPLE_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(c) 0
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1681# define _HAS_NONLATIN1_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(c) 0
1682
1683 /* Many of the macros later in this file are defined in terms of these. By
1684 * implementing them with a function, which converts the class number into
1685 * a call to the desired macro, all of the later ones work. However, that
1686 * function won't be actually defined when building a utility program (no
1687 * perl.h), and so a compiler error will be generated if one is attempted
1688 * to be used. And the above-Latin1 code points require Unicode tables to
1689 * be present, something unlikely to be the case when bootstrapping */
1690# define _generic_isCC(c, classnum) \
1691 (FITS_IN_8_BITS(c) && S_bootstrap_ctype((U8) (c), (classnum), TRUE))
1692# define _generic_isCC_A(c, classnum) \
1693 (FITS_IN_8_BITS(c) && S_bootstrap_ctype((U8) (c), (classnum), FALSE))
687c8d01 1694#endif /* End of no perl.h H_PERL */
8a58bdcf 1695
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1696#define isALPHANUMERIC(c) isALPHANUMERIC_A(c)
1697#define isALPHA(c) isALPHA_A(c)
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1698#define isASCII_A(c) isASCII(c)
1699#define isASCII_L1(c) isASCII(c)
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1700#define isBLANK(c) isBLANK_A(c)
1701#define isCNTRL(c) isCNTRL_A(c)
1702#define isDIGIT(c) isDIGIT_A(c)
1703#define isGRAPH(c) isGRAPH_A(c)
1704#define isIDFIRST(c) isIDFIRST_A(c)
1705#define isLOWER(c) isLOWER_A(c)
1706#define isPRINT(c) isPRINT_A(c)
779cf272 1707#define isPSXSPC_A(c) isSPACE_A(c)
e66b99e9 1708#define isPSXSPC(c) isPSXSPC_A(c)
779cf272 1709#define isPSXSPC_L1(c) isSPACE_L1(c)
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1710#define isPUNCT(c) isPUNCT_A(c)
1711#define isSPACE(c) isSPACE_A(c)
1712#define isUPPER(c) isUPPER_A(c)
1713#define isWORDCHAR(c) isWORDCHAR_A(c)
1714#define isXDIGIT(c) isXDIGIT_A(c)
1715
1716/* ASCII casing. These could also be written as
1717 #define toLOWER(c) (isASCII(c) ? toLOWER_LATIN1(c) : (c))
1718 #define toUPPER(c) (isASCII(c) ? toUPPER_LATIN1_MOD(c) : (c))
1719 which uses table lookup and mask instead of subtraction. (This would
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1720 work because the _MOD does not apply in the ASCII range).
1721
1722 These actually are UTF-8 invariant casing, not just ASCII, as any non-ASCII
1723 UTF-8 invariants are neither upper nor lower. (Only on EBCDIC platforms are
1724 there non-ASCII invariants, and all of them are controls.) */
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DM
1725#define toLOWER(c) (isUPPER(c) ? (U8)((c) + ('a' - 'A')) : (c))
1726#define toUPPER(c) (isLOWER(c) ? (U8)((c) - ('a' - 'A')) : (c))
bbce6d69 1727
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1728/* In the ASCII range, these are equivalent to what they're here defined to be.
1729 * But by creating these definitions, other code doesn't have to be aware of
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1730 * this detail. Actually this works for all UTF-8 invariants, not just the
1731 * ASCII range. (EBCDIC platforms can have non-ASCII invariants.) */
25200305 1732#define toFOLD(c) toLOWER(c)
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1733#define toTITLE(c) toUPPER(c)
1734
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1735#define toLOWER_A(c) toLOWER(c)
1736#define toUPPER_A(c) toUPPER(c)
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1737#define toFOLD_A(c) toFOLD(c)
1738#define toTITLE_A(c) toTITLE(c)
1a0901db 1739
4650c663 1740/* Use table lookup for speed; returns the input itself if is out-of-range */
b2bf251f 1741#define toLOWER_LATIN1(c) ((! FITS_IN_8_BITS(c)) \
8e7c6e7d 1742 ? (c) \
f4cd282c 1743 : PL_latin1_lc[ (U8) (c) ])
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1744#define toLOWER_L1(c) toLOWER_LATIN1(c) /* Synonym for consistency */
1745
1a0901db 1746/* Modified uc. Is correct uc except for three non-ascii chars which are
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1747 * all mapped to one of them, and these need special handling; returns the
1748 * input itself if is out-of-range */
b2bf251f 1749#define toUPPER_LATIN1_MOD(c) ((! FITS_IN_8_BITS(c)) \
8e7c6e7d 1750 ? (c) \
f4cd282c 1751 : PL_mod_latin1_uc[ (U8) (c) ])
31f05a37 1752#define IN_UTF8_CTYPE_LOCALE PL_in_utf8_CTYPE_locale
84061b6a 1753
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1754/* Use foo_LC_uvchr() instead of these for beyond the Latin1 range */
1755
1756/* For internal core Perl use only: the base macro for defining macros like
1757 * isALPHA_LC, which uses the current LC_CTYPE locale. 'c' is the code point
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1758 * (0-255) to check. In a UTF-8 locale, the result is the same as calling
1759 * isFOO_L1(); the 'utf8_locale_classnum' parameter is something like
1760 * _CC_UPPER, which gives the class number for doing this. For non-UTF-8
1761 * locales, the code to actually do the test this is passed in 'non_utf8'. If
1762 * 'c' is above 255, 0 is returned. For accessing the full range of possible
1763 * code points under locale rules, use the macros based on _generic_LC_uvchr
1764 * instead of this. */
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1765#define _generic_LC_base(c, utf8_locale_classnum, non_utf8) \
1766 (! FITS_IN_8_BITS(c) \
1767 ? 0 \
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1768 : IN_UTF8_CTYPE_LOCALE \
1769 ? cBOOL(PL_charclass[(U8) (c)] & _CC_mask(utf8_locale_classnum)) \
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1770 : cBOOL(non_utf8))
1771
1772/* For internal core Perl use only: a helper macro for defining macros like
1773 * isALPHA_LC. 'c' is the code point (0-255) to check. The function name to
1774 * actually do this test is passed in 'non_utf8_func', which is called on 'c',
1775 * casting 'c' to the macro _LC_CAST, which should not be parenthesized. See
1776 * _generic_LC_base for more info */
1777#define _generic_LC(c, utf8_locale_classnum, non_utf8_func) \
1778 _generic_LC_base(c,utf8_locale_classnum, \
1779 non_utf8_func( (_LC_CAST) (c)))
1780
1781/* For internal core Perl use only: like _generic_LC, but also returns TRUE if
1782 * 'c' is the platform's native underscore character */
1783#define _generic_LC_underscore(c,utf8_locale_classnum,non_utf8_func) \
1784 _generic_LC_base(c, utf8_locale_classnum, \
1785 (non_utf8_func( (_LC_CAST) (c)) \
1786 || (char)(c) == '_'))
1787
1788/* These next three are also for internal core Perl use only: case-change
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1789 * helper macros. The reason for using the PL_latin arrays is in case the
1790 * system function is defective; it ensures uniform results that conform to the
b257a28c 1791 * Unicod standard. It does not handle the anomalies in UTF-8 Turkic locales */
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1792#define _generic_toLOWER_LC(c, function, cast) (! FITS_IN_8_BITS(c) \
1793 ? (c) \
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1794 : (IN_UTF8_CTYPE_LOCALE) \
1795 ? PL_latin1_lc[ (U8) (c) ] \
5a10328c 1796 : (cast)function((cast)(c)))
beab9ebe 1797
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1798/* Note that the result can be larger than a byte in a UTF-8 locale. It
1799 * returns a single value, so can't adequately return the upper case of LATIN
1800 * SMALL LETTER SHARP S in a UTF-8 locale (which should be a string of two
1801 * values "SS"); instead it asserts against that under DEBUGGING, and
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1802 * otherwise returns its input. It does not handle the anomalies in UTF-8
1803 * Turkic locales. */
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1804#define _generic_toUPPER_LC(c, function, cast) \
1805 (! FITS_IN_8_BITS(c) \
1806 ? (c) \
31f05a37 1807 : ((! IN_UTF8_CTYPE_LOCALE) \
b7d90381 1808 ? (cast)function((cast)(c)) \
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1809 : ((((U8)(c)) == MICRO_SIGN) \
1810 ? GREEK_CAPITAL_LETTER_MU \
1811 : ((((U8)(c)) == LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) \
1812 ? LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS \
1813 : ((((U8)(c)) == LATIN_SMALL_LETTER_SHARP_S) \
1814 ? (__ASSERT_(0) (c)) \
1815 : PL_mod_latin1_uc[ (U8) (c) ])))))
1816
1817/* Note that the result can be larger than a byte in a UTF-8 locale. It
1818 * returns a single value, so can't adequately return the fold case of LATIN
1819 * SMALL LETTER SHARP S in a UTF-8 locale (which should be a string of two
1820 * values "ss"); instead it asserts against that under DEBUGGING, and
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1821 * otherwise returns its input. It does not handle the anomalies in UTF-8
1822 * Turkic locales */
beab9ebe 1823#define _generic_toFOLD_LC(c, function, cast) \
4d7db1b9 1824 ((UNLIKELY((c) == MICRO_SIGN) && IN_UTF8_CTYPE_LOCALE) \
31f05a37 1825 ? GREEK_SMALL_LETTER_MU \
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1826 : (__ASSERT_(! IN_UTF8_CTYPE_LOCALE \
1827 || (c) != LATIN_SMALL_LETTER_SHARP_S) \
1828 _generic_toLOWER_LC(c, function, cast)))
beab9ebe 1829
84061b6a 1830/* Use the libc versions for these if available. */
f05550c0 1831#if defined(HAS_ISASCII)
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1832# define isASCII_LC(c) (FITS_IN_8_BITS(c) && isascii( (U8) (c)))
1833#else
1834# define isASCII_LC(c) isASCII(c)
1835#endif
1836
f05550c0 1837#if defined(HAS_ISBLANK)
84061b6a 1838# define isBLANK_LC(c) _generic_LC(c, _CC_BLANK, isblank)
95f34b6f 1839#else /* Unlike isASCII, varies if in a UTF-8 locale */
278b2b56 1840# define isBLANK_LC(c) ((IN_UTF8_CTYPE_LOCALE) ? isBLANK_L1(c) : isBLANK(c))
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1841#endif
1842
f05550c0 1843#define _LC_CAST U8
bbce6d69 1844
f05550c0 1845#ifdef WIN32
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1846 /* The Windows functions don't bother to follow the POSIX standard, which
1847 * for example says that something can't both be a printable and a control.
1848 * But Windows treats the \t control as a printable, and does such things
1849 * as making superscripts into both digits and punctuation. This tames
1850 * these flaws by assuming that the definitions of both controls and space
1851 * are correct, and then making sure that other definitions don't have
1852 * weirdnesses, by making sure that isalnum() isn't also ispunct(), etc.
1853 * Not all possible weirdnesses are checked for, just the ones that were
1854 * detected on actual Microsoft code pages */
1855
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1856# define isCNTRL_LC(c) _generic_LC(c, _CC_CNTRL, iscntrl)
1857# define isSPACE_LC(c) _generic_LC(c, _CC_SPACE, isspace)
1858
1859# define isALPHA_LC(c) (_generic_LC(c, _CC_ALPHA, isalpha) \
1860 && isALPHANUMERIC_LC(c))
1861# define isALPHANUMERIC_LC(c) (_generic_LC(c, _CC_ALPHANUMERIC, isalnum) && \
1862 ! isPUNCT_LC(c))
1863# define isDIGIT_LC(c) (_generic_LC(c, _CC_DIGIT, isdigit) && \
1864 isALPHANUMERIC_LC(c))
1865# define isGRAPH_LC(c) (_generic_LC(c, _CC_GRAPH, isgraph) && isPRINT_LC(c))
1866# define isIDFIRST_LC(c) (((c) == '_') \
1867 || (_generic_LC(c, _CC_IDFIRST, isalpha) && ! isPUNCT_LC(c)))
1868# define isLOWER_LC(c) (_generic_LC(c, _CC_LOWER, islower) && isALPHA_LC(c))
1869# define isPRINT_LC(c) (_generic_LC(c, _CC_PRINT, isprint) && ! isCNTRL_LC(c))
1870# define isPUNCT_LC(c) (_generic_LC(c, _CC_PUNCT, ispunct) && ! isCNTRL_LC(c))
1871# define isUPPER_LC(c) (_generic_LC(c, _CC_UPPER, isupper) && isALPHA_LC(c))
f05550c0 1872# define isWORDCHAR_LC(c) (((c) == '_') || isALPHANUMERIC_LC(c))
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1873# define isXDIGIT_LC(c) (_generic_LC(c, _CC_XDIGIT, isxdigit) \
1874 && isALPHANUMERIC_LC(c))
f05550c0
BF
1875
1876# define toLOWER_LC(c) _generic_toLOWER_LC((c), tolower, U8)
1877# define toUPPER_LC(c) _generic_toUPPER_LC((c), toupper, U8)
1878# define toFOLD_LC(c) _generic_toFOLD_LC((c), tolower, U8)
1879
1880#elif defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
4650c663 1881 /* For most other platforms */
beab9ebe 1882
f05550c0
BF
1883# define isALPHA_LC(c) _generic_LC(c, _CC_ALPHA, isalpha)
1884# define isALPHANUMERIC_LC(c) _generic_LC(c, _CC_ALPHANUMERIC, isalnum)
1885# define isCNTRL_LC(c) _generic_LC(c, _CC_CNTRL, iscntrl)
1886# define isDIGIT_LC(c) _generic_LC(c, _CC_DIGIT, isdigit)
1887# define isGRAPH_LC(c) _generic_LC(c, _CC_GRAPH, isgraph)
1888# define isIDFIRST_LC(c) _generic_LC_underscore(c, _CC_IDFIRST, isalpha)
1889# define isLOWER_LC(c) _generic_LC(c, _CC_LOWER, islower)
1890# define isPRINT_LC(c) _generic_LC(c, _CC_PRINT, isprint)
1891# define isPUNCT_LC(c) _generic_LC(c, _CC_PUNCT, ispunct)
1892# define isSPACE_LC(c) _generic_LC(c, _CC_SPACE, isspace)
1893# define isUPPER_LC(c) _generic_LC(c, _CC_UPPER, isupper)
1894# define isWORDCHAR_LC(c) _generic_LC_underscore(c, _CC_WORDCHAR, isalnum)
1895# define isXDIGIT_LC(c) _generic_LC(c, _CC_XDIGIT, isxdigit)
1896
1897
1898# define toLOWER_LC(c) _generic_toLOWER_LC((c), tolower, U8)
1899# define toUPPER_LC(c) _generic_toUPPER_LC((c), toupper, U8)
1900# define toFOLD_LC(c) _generic_toFOLD_LC((c), tolower, U8)
1901
1902#else /* The final fallback position */
1903
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1904# define isALPHA_LC(c) (isascii(c) && isalpha(c))
1905# define isALPHANUMERIC_LC(c) (isascii(c) && isalnum(c))
1906# define isCNTRL_LC(c) (isascii(c) && iscntrl(c))
1907# define isDIGIT_LC(c) (isascii(c) && isdigit(c))
1908# define isGRAPH_LC(c) (isascii(c) && isgraph(c))
f05550c0 1909# define isIDFIRST_LC(c) (isascii(c) && (isalpha(c) || (c) == '_'))
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1910# define isLOWER_LC(c) (isascii(c) && islower(c))
1911# define isPRINT_LC(c) (isascii(c) && isprint(c))
1912# define isPUNCT_LC(c) (isascii(c) && ispunct(c))
1913# define isSPACE_LC(c) (isascii(c) && isspace(c))
1914# define isUPPER_LC(c) (isascii(c) && isupper(c))
f05550c0 1915# define isWORDCHAR_LC(c) (isascii(c) && (isalnum(c) || (c) == '_'))
b7d90381 1916# define isXDIGIT_LC(c) (isascii(c) && isxdigit(c))
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1917
1918# define toLOWER_LC(c) (isascii(c) ? tolower(c) : (c))
1919# define toUPPER_LC(c) (isascii(c) ? toupper(c) : (c))
1920# define toFOLD_LC(c) (isascii(c) ? tolower(c) : (c))
bbce6d69 1921
f05550c0 1922#endif
55204971 1923
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1924#define isIDCONT(c) isWORDCHAR(c)
1925#define isIDCONT_A(c) isWORDCHAR_A(c)
1926#define isIDCONT_L1(c) isWORDCHAR_L1(c)
1927#define isIDCONT_LC(c) isWORDCHAR_LC(c)
13380643 1928#define isPSXSPC_LC(c) isSPACE_LC(c)
aaa51d5e 1929
4650c663 1930/* For internal core Perl use only: the base macros for defining macros like
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1931 * isALPHA_uvchr. 'c' is the code point to check. 'classnum' is the POSIX class
1932 * number defined earlier in this file. _generic_uvchr() is used for POSIX
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1933 * classes where there is a macro or function 'above_latin1' that takes the
1934 * single argument 'c' and returns the desired value. These exist for those
1935 * classes which have simple definitions, avoiding the overhead of a hash
d0da05db 1936 * lookup or inversion list binary search. _generic_swash_uvchr() can be used
4650c663 1937 * for classes where that overhead is faster than a direct lookup.
d0da05db 1938 * _generic_uvchr() won't compile if 'c' isn't unsigned, as it won't match the
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1939 * 'above_latin1' prototype. _generic_isCC() macro does bounds checking, so
1940 * have duplicate checks here, so could create versions of the macros that
1941 * don't, but experiments show that gcc optimizes them out anyway. */
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1942
1943/* Note that all ignore 'use bytes' */
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1944#define _generic_uvchr(classnum, above_latin1, c) ((c) < 256 \
1945 ? _generic_isCC(c, classnum) \
cd500f2f 1946 : above_latin1(c))
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1947#define _generic_swash_uvchr(classnum, c) ((c) < 256 \
1948 ? _generic_isCC(c, classnum) \
922e8cb4 1949 : _is_uni_FOO(classnum, c))
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1950#define isALPHA_uvchr(c) _generic_swash_uvchr(_CC_ALPHA, c)
1951#define isALPHANUMERIC_uvchr(c) _generic_swash_uvchr(_CC_ALPHANUMERIC, c)
1952#define isASCII_uvchr(c) isASCII(c)
1953#define isBLANK_uvchr(c) _generic_uvchr(_CC_BLANK, is_HORIZWS_cp_high, c)
1954#define isCNTRL_uvchr(c) isCNTRL_L1(c) /* All controls are in Latin1 */
1955#define isDIGIT_uvchr(c) _generic_swash_uvchr(_CC_DIGIT, c)
1956#define isGRAPH_uvchr(c) _generic_swash_uvchr(_CC_GRAPH, c)
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1957#define isIDCONT_uvchr(c) \
1958 _generic_uvchr(_CC_WORDCHAR, _is_uni_perl_idcont, c)
1959#define isIDFIRST_uvchr(c) \
1960 _generic_uvchr(_CC_IDFIRST, _is_uni_perl_idstart, c)
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1961#define isLOWER_uvchr(c) _generic_swash_uvchr(_CC_LOWER, c)
1962#define isPRINT_uvchr(c) _generic_swash_uvchr(_CC_PRINT, c)
1963
1964#define isPUNCT_uvchr(c) _generic_swash_uvchr(_CC_PUNCT, c)
1965#define isSPACE_uvchr(c) _generic_uvchr(_CC_SPACE, is_XPERLSPACE_cp_high, c)
1966#define isPSXSPC_uvchr(c) isSPACE_uvchr(c)
1967
1968#define isUPPER_uvchr(c) _generic_swash_uvchr(_CC_UPPER, c)
1969#define isVERTWS_uvchr(c) _generic_uvchr(_CC_VERTSPACE, is_VERTWS_cp_high, c)
1970#define isWORDCHAR_uvchr(c) _generic_swash_uvchr(_CC_WORDCHAR, c)
1971#define isXDIGIT_uvchr(c) _generic_uvchr(_CC_XDIGIT, is_XDIGIT_cp_high, c)
1972
1973#define toFOLD_uvchr(c,s,l) to_uni_fold(c,s,l)
1974#define toLOWER_uvchr(c,s,l) to_uni_lower(c,s,l)
1975#define toTITLE_uvchr(c,s,l) to_uni_title(c,s,l)
1976#define toUPPER_uvchr(c,s,l) to_uni_upper(c,s,l)
1977
1978/* For backwards compatibility, even though '_uni' should mean official Unicode
1979 * code points, in Perl it means native for those below 256 */
1980#define isALPHA_uni(c) isALPHA_uvchr(c)
1981#define isALPHANUMERIC_uni(c) isALPHANUMERIC_uvchr(c)
1982#define isASCII_uni(c) isASCII_uvchr(c)
1983#define isBLANK_uni(c) isBLANK_uvchr(c)
1984#define isCNTRL_uni(c) isCNTRL_uvchr(c)
1985#define isDIGIT_uni(c) isDIGIT_uvchr(c)
1986#define isGRAPH_uni(c) isGRAPH_uvchr(c)
1987#define isIDCONT_uni(c) isIDCONT_uvchr(c)
1988#define isIDFIRST_uni(c) isIDFIRST_uvchr(c)
1989#define isLOWER_uni(c) isLOWER_uvchr(c)
1990#define isPRINT_uni(c) isPRINT_uvchr(c)
1991#define isPUNCT_uni(c) isPUNCT_uvchr(c)
1992#define isSPACE_uni(c) isSPACE_uvchr(c)
1993#define isPSXSPC_uni(c) isPSXSPC_uvchr(c)
1994#define isUPPER_uni(c) isUPPER_uvchr(c)
1995#define isVERTWS_uni(c) isVERTWS_uvchr(c)
1996#define isWORDCHAR_uni(c) isWORDCHAR_uvchr(c)
1997#define isXDIGIT_uni(c) isXDIGIT_uvchr(c)
1998#define toFOLD_uni(c,s,l) toFOLD_uvchr(c,s,l)
1999#define toLOWER_uni(c,s,l) toLOWER_uvchr(c,s,l)
2000#define toTITLE_uni(c,s,l) toTITLE_uvchr(c,s,l)
2001#define toUPPER_uni(c,s,l) toUPPER_uvchr(c,s,l)
a0ed51b3 2002
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2003/* For internal core Perl use only: the base macros for defining macros like
2004 * isALPHA_LC_uvchr. These are like isALPHA_LC, but the input can be any code
d0da05db 2005 * point, not just 0-255. Like _generic_uvchr, there are two versions, one for
4650c663 2006 * simple class definitions; the other for more complex. These are like
d0da05db 2007 * _generic_uvchr, so see it for more info. */
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2008#define _generic_LC_uvchr(latin1, above_latin1, c) \
2009 (c < 256 ? latin1(c) : above_latin1(c))
2010#define _generic_LC_swash_uvchr(latin1, classnum, c) \
2011 (c < 256 ? latin1(c) : _is_uni_FOO(classnum, c))
2012
2013#define isALPHA_LC_uvchr(c) _generic_LC_swash_uvchr(isALPHA_LC, _CC_ALPHA, c)
2014#define isALPHANUMERIC_LC_uvchr(c) _generic_LC_swash_uvchr(isALPHANUMERIC_LC, \
2015 _CC_ALPHANUMERIC, c)
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2016#define isASCII_LC_uvchr(c) isASCII_LC(c)
2017#define isBLANK_LC_uvchr(c) _generic_LC_uvchr(isBLANK_LC, \
2018 is_HORIZWS_cp_high, c)
feeab5a9 2019#define isCNTRL_LC_uvchr(c) (c < 256 ? isCNTRL_LC(c) : 0)
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2020#define isDIGIT_LC_uvchr(c) _generic_LC_swash_uvchr(isDIGIT_LC, _CC_DIGIT, c)
2021#define isGRAPH_LC_uvchr(c) _generic_LC_swash_uvchr(isGRAPH_LC, _CC_GRAPH, c)
b7d90381 2022#define isIDCONT_LC_uvchr(c) _generic_LC_uvchr(isIDCONT_LC, \
eba68aa0 2023 _is_uni_perl_idcont, c)
b7d90381 2024#define isIDFIRST_LC_uvchr(c) _generic_LC_uvchr(isIDFIRST_LC, \
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2025 _is_uni_perl_idstart, c)
2026#define isLOWER_LC_uvchr(c) _generic_LC_swash_uvchr(isLOWER_LC, _CC_LOWER, c)
2027#define isPRINT_LC_uvchr(c) _generic_LC_swash_uvchr(isPRINT_LC, _CC_PRINT, c)
b7d90381 2028#define isPSXSPC_LC_uvchr(c) isSPACE_LC_uvchr(c)
cd500f2f 2029#define isPUNCT_LC_uvchr(c) _generic_LC_swash_uvchr(isPUNCT_LC, _CC_PUNCT, c)
b7d90381 2030#define isSPACE_LC_uvchr(c) _generic_LC_uvchr(isSPACE_LC, \
509fb054 2031 is_XPERLSPACE_cp_high, c)
cd500f2f 2032#define isUPPER_LC_uvchr(c) _generic_LC_swash_uvchr(isUPPER_LC, _CC_UPPER, c)
b7d90381 2033#define isWORDCHAR_LC_uvchr(c) _generic_LC_swash_uvchr(isWORDCHAR_LC, \
cd500f2f 2034 _CC_WORDCHAR, c)
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2035#define isXDIGIT_LC_uvchr(c) _generic_LC_uvchr(isXDIGIT_LC, \
2036 is_XDIGIT_cp_high, c)
e712593e 2037
b7d90381 2038#define isBLANK_LC_uni(c) isBLANK_LC_uvchr(UNI_TO_NATIVE(c))
aaa51d5e 2039
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2040/* For internal core Perl use only: the base macros for defining macros like
2041 * isALPHA_utf8. These are like the earlier defined macros, but take an input
2042 * UTF-8 encoded string 'p'. If the input is in the Latin1 range, use
2043 * the Latin1 macro 'classnum' on 'p'. Otherwise use the value given by the
2044 * 'utf8' parameter. This relies on the fact that ASCII characters have the
2045 * same representation whether utf8 or not. Note that it assumes that the utf8
2046 * has been validated, and ignores 'use bytes' */
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2047#define _base_generic_utf8(enum_name, name, p, use_locale ) \
2048 _is_utf8_FOO(CAT2(_CC_, enum_name), \
2049 (const U8 *) p, \
2050 "is" STRINGIFY(name) "_utf8", \
2051 "is" STRINGIFY(name) "_utf8_safe", \
2052 1, use_locale, __FILE__,__LINE__)
2053
2054#define _generic_utf8(name, p) _base_generic_utf8(name, name, p, 0)
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2055
2056/* The "_safe" macros make sure that we don't attempt to read beyond 'e', but
2057 * they don't otherwise go out of their way to look for malformed UTF-8. If
2058 * they can return accurate results without knowing if the input is otherwise
2059 * malformed, they do so. For example isASCII is accurate in spite of any
2060 * non-length malformations because it looks only at a single byte. Likewise
2061 * isDIGIT looks just at the first byte for code points 0-255, as all UTF-8
2062 * variant ones return FALSE. But, if the input has to be well-formed in order
2063 * for the results to be accurate, the macros will test and if malformed will
2064 * call a routine to die
2065 *
2066 * Except for toke.c, the macros do assume that e > p, asserting that on
2067 * DEBUGGING builds. Much code that calls these depends on this being true,
2068 * for other reasons. toke.c is treated specially as using the regular
2069 * assertion breaks it in many ways. All strings that these operate on there
2070 * are supposed to have an extra NUL character at the end, so that *e = \0. A
2071 * bunch of code in toke.c assumes that this is true, so the assertion allows
2072 * for that */
2073#ifdef PERL_IN_TOKE_C
2074# define _utf8_safe_assert(p,e) ((e) > (p) || ((e) == (p) && *(p) == '\0'))
2075#else
2076# define _utf8_safe_assert(p,e) ((e) > (p))
2077#endif
2078
2079#define _generic_utf8_safe(classnum, p, e, above_latin1) \
2080 (__ASSERT_(_utf8_safe_assert(p, e)) \
2081 (UTF8_IS_INVARIANT(*(p))) \
2082 ? _generic_isCC(*(p), classnum) \
2083 : (UTF8_IS_DOWNGRADEABLE_START(*(p)) \
2084 ? ((LIKELY((e) - (p) > 1 && UTF8_IS_CONTINUATION(*((p)+1)))) \
2085 ? _generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(*(p), *((p)+1 )), \
2086 classnum) \
2087 : (_force_out_malformed_utf8_message( \
2088 (U8 *) (p), (U8 *) (e), 0, 1), 0)) \
2089 : above_latin1))
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2090/* Like the above, but calls 'above_latin1(p)' to get the utf8 value.
2091 * 'above_latin1' can be a macro */
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2092#define _generic_func_utf8_safe(classnum, above_latin1, p, e) \
2093 _generic_utf8_safe(classnum, p, e, above_latin1(p, e))
2094#define _generic_non_swash_utf8_safe(classnum, above_latin1, p, e) \
2095 _generic_utf8_safe(classnum, p, e, \
2096 (UNLIKELY((e) - (p) < UTF8SKIP(p)) \
2097 ? (_force_out_malformed_utf8_message( \
2098 (U8 *) (p), (U8 *) (e), 0, 1), 0) \
2099 : above_latin1(p)))
4650c663 2100/* Like the above, but passes classnum to _isFOO_utf8(), instead of having an
cd500f2f 2101 * 'above_latin1' parameter */
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2102#define _generic_swash_utf8_safe(classnum, p, e) \
2103_generic_utf8_safe(classnum, p, e, _is_utf8_FOO_with_len(classnum, p, e))
922e8cb4 2104
cc8ab7c0 2105/* Like the above, but should be used only when it is known that there are no
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2106 * characters in the upper-Latin1 range (128-255 on ASCII platforms) which the
2107 * class is TRUE for. Hence it can skip the tests for this range.
2108 * 'above_latin1' should include its arguments */
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2109#define _generic_utf8_safe_no_upper_latin1(classnum, p, e, above_latin1) \
2110 (__ASSERT_(_utf8_safe_assert(p, e)) \
2111 (UTF8_IS_INVARIANT(*(p))) \
2112 ? _generic_isCC(*(p), classnum) \
2113 : (UTF8_IS_DOWNGRADEABLE_START(*(p))) \
2114 ? 0 /* Note that doesn't check validity for latin1 */ \
2115 : above_latin1)
2116
84238efa 2117
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2118#define isALPHA_utf8(p) _generic_utf8(ALPHA, p)
2119#define isALPHANUMERIC_utf8(p) _generic_utf8(ALPHANUMERIC, p)
2120#define isASCII_utf8(p) _generic_utf8(ASCII, p)
2121#define isBLANK_utf8(p) _generic_utf8(BLANK, p)
2122#define isCNTRL_utf8(p) _generic_utf8(CNTRL, p)
2123#define isDIGIT_utf8(p) _generic_utf8(DIGIT, p)
2124#define isGRAPH_utf8(p) _generic_utf8(GRAPH, p)
2125#define isIDCONT_utf8(p) _generic_utf8(IDCONT, p)
2126#define isIDFIRST_utf8(p) _generic_utf8(IDFIRST, p)
2127#define isLOWER_utf8(p) _generic_utf8(LOWER, p)
2128#define isPRINT_utf8(p) _generic_utf8(PRINT, p)
2129#define isPSXSPC_utf8(p) _generic_utf8(PSXSPC, p)
2130#define isPUNCT_utf8(p) _generic_utf8(PUNCT, p)
2131#define isSPACE_utf8(p) _generic_utf8(SPACE, p)
2132#define isUPPER_utf8(p) _generic_utf8(UPPER, p)
2133#define isVERTWS_utf8(p) _generic_utf8(VERTSPACE, p)
2134#define isWORDCHAR_utf8(p) _generic_utf8(WORDCHAR, p)
2135#define isXDIGIT_utf8(p) _generic_utf8(XDIGIT, p)
e8fa43e2 2136
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2137#define isALPHA_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_ALPHA, p, e)
2138#define isALPHANUMERIC_utf8_safe(p, e) \
2139 _generic_swash_utf8_safe(_CC_ALPHANUMERIC, p, e)
2140#define isASCII_utf8_safe(p, e) \
2141 /* Because ASCII is invariant under utf8, the non-utf8 macro \
2142 * works */ \
2143 (__ASSERT_(_utf8_safe_assert(p, e)) isASCII(*(p)))
2144#define isBLANK_utf8_safe(p, e) \
2145 _generic_non_swash_utf8_safe(_CC_BLANK, is_HORIZWS_high, p, e)
2146
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2147#ifdef EBCDIC
2148 /* Because all controls are UTF-8 invariants in EBCDIC, we can use this
2149 * more efficient macro instead of the more general one */
da8c1a98 2150# define isCNTRL_utf8_safe(p, e) \
56d02b8c 2151 (__ASSERT_(_utf8_safe_assert(p, e)) isCNTRL_L1(*(p)))
e8fa43e2 2152#else
da8c1a98 2153# define isCNTRL_utf8_safe(p, e) _generic_utf8_safe(_CC_CNTRL, p, e, 0)
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2154#endif
2155
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2156#define isDIGIT_utf8_safe(p, e) \
2157 _generic_utf8_safe_no_upper_latin1(_CC_DIGIT, p, e, \
2158 _is_utf8_FOO_with_len(_CC_DIGIT, p, e))
2159#define isGRAPH_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_GRAPH, p, e)
2160#define isIDCONT_utf8_safe(p, e) _generic_func_utf8_safe(_CC_WORDCHAR, \
2161 _is_utf8_perl_idcont_with_len, p, e)
e5dcd934 2162
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2163/* To prevent S_scan_word in toke.c from hanging, we have to make sure that
2164 * IDFIRST is an alnum. See
c8362b00 2165 * http://rt.perl.org/rt3/Ticket/Display.html?id=74022 for more detail than you
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2166 * ever wanted to know about. (In the ASCII range, there isn't a difference.)
2167 * This used to be not the XID version, but we decided to go with the more
2168 * modern Unicode definition */
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2169#define isIDFIRST_utf8_safe(p, e) \
2170 _generic_func_utf8_safe(_CC_IDFIRST, \
2171 _is_utf8_perl_idstart_with_len, (U8 *) (p), (U8 *) (e))
2172
2173#define isLOWER_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_LOWER, p, e)
2174#define isPRINT_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_PRINT, p, e)
2175#define isPSXSPC_utf8_safe(p, e) isSPACE_utf8_safe(p, e)
2176#define isPUNCT_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_PUNCT, p, e)
2177#define isSPACE_utf8_safe(p, e) \
2178 _generic_non_swash_utf8_safe(_CC_SPACE, is_XPERLSPACE_high, p, e)
2179#define isUPPER_utf8_safe(p, e) _generic_swash_utf8_safe(_CC_UPPER, p, e)
2180#define isVERTWS_utf8_safe(p, e) \
2181 _generic_non_swash_utf8_safe(_CC_VERTSPACE, is_VERTWS_high, p, e)
2182#define isWORDCHAR_utf8_safe(p, e) \
2183 _generic_swash_utf8_safe(_CC_WORDCHAR, p, e)
2184#define isXDIGIT_utf8_safe(p, e) \
2185 _generic_utf8_safe_no_upper_latin1(_CC_XDIGIT, p, e, \
2186 (UNLIKELY((e) - (p) < UTF8SKIP(p)) \
2187 ? (_force_out_malformed_utf8_message( \
2188 (U8 *) (p), (U8 *) (e), 0, 1), 0) \
2189 : is_XDIGIT_high(p)))
a0ed51b3 2190
7d2b61dd 2191#define toFOLD_utf8(p,s,l) to_utf8_fold(p,s,l)
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2192#define toLOWER_utf8(p,s,l) to_utf8_lower(p,s,l)
2193#define toTITLE_utf8(p,s,l) to_utf8_title(p,s,l)
2194#define toUPPER_utf8(p,s,l) to_utf8_upper(p,s,l)
2e8adce6 2195
567b353c 2196/* For internal core use only, subject to change */
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2197#define _toFOLD_utf8_flags(p,e,s,l,f) _to_utf8_fold_flags (p,e,s,l,f, "", 0)
2198#define _toLOWER_utf8_flags(p,e,s,l,f) _to_utf8_lower_flags(p,e,s,l,f, "", 0)
2199#define _toTITLE_utf8_flags(p,e,s,l,f) _to_utf8_title_flags(p,e,s,l,f, "", 0)
2200#define _toUPPER_utf8_flags(p,e,s,l,f) _to_utf8_upper_flags(p,e,s,l,f, "", 0)
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2201
2202#define toFOLD_utf8_safe(p,e,s,l) _toFOLD_utf8_flags(p,e,s,l, FOLD_FLAGS_FULL)
2203#define toLOWER_utf8_safe(p,e,s,l) _toLOWER_utf8_flags(p,e,s,l, 0)
2204#define toTITLE_utf8_safe(p,e,s,l) _toTITLE_utf8_flags(p,e,s,l, 0)
2205#define toUPPER_utf8_safe(p,e,s,l) _toUPPER_utf8_flags(p,e,s,l, 0)
567b353c 2206
4650c663
KW
2207/* For internal core Perl use only: the base macros for defining macros like
2208 * isALPHA_LC_utf8. These are like _generic_utf8, but if the first code point
2209 * in 'p' is within the 0-255 range, it uses locale rules from the passed-in
2210 * 'macro' parameter */
34aeb2e9
KW
2211#define _generic_LC_utf8(name, p) _base_generic_utf8(name, name, p, 1)
2212
2213#define isALPHA_LC_utf8(p) _generic_LC_utf8(ALPHA, p)
2214#define isALPHANUMERIC_LC_utf8(p) _generic_LC_utf8(ALPHANUMERIC, p)
2215#define isASCII_LC_utf8(p) _generic_LC_utf8(ASCII, p)
2216#define isBLANK_LC_utf8(p) _generic_LC_utf8(BLANK, p)
2217#define isCNTRL_LC_utf8(p) _generic_LC_utf8(CNTRL, p)
2218#define isDIGIT_LC_utf8(p) _generic_LC_utf8(DIGIT, p)
2219#define isGRAPH_LC_utf8(p) _generic_LC_utf8(GRAPH, p)
2220#define isIDCONT_LC_utf8(p) _generic_LC_utf8(IDCONT, p)
2221#define isIDFIRST_LC_utf8(p) _generic_LC_utf8(IDFIRST, p)
2222#define isLOWER_LC_utf8(p) _generic_LC_utf8(LOWER, p)
2223#define isPRINT_LC_utf8(p) _generic_LC_utf8(PRINT, p)
2224#define isPSXSPC_LC_utf8(p) _generic_LC_utf8(PSXSPC, p)
2225#define isPUNCT_LC_utf8(p) _generic_LC_utf8(PUNCT, p)
2226#define isSPACE_LC_utf8(p) _generic_LC_utf8(SPACE, p)
2227#define isUPPER_LC_utf8(p) _generic_LC_utf8(UPPER, p)
2228#define isWORDCHAR_LC_utf8(p) _generic_LC_utf8(WORDCHAR, p)
2229#define isXDIGIT_LC_utf8(p) _generic_LC_utf8(XDIGIT, p)
2230
da8c1a98
KW
2231/* For internal core Perl use only: the base macros for defining macros like
2232 * isALPHA_LC_utf8_safe. These are like _generic_utf8, but if the first code
2233 * point in 'p' is within the 0-255 range, it uses locale rules from the
2234 * passed-in 'macro' parameter */
2235#define _generic_LC_utf8_safe(macro, p, e, above_latin1) \
2236 (__ASSERT_(_utf8_safe_assert(p, e)) \
2237 (UTF8_IS_INVARIANT(*(p))) \
2238 ? macro(*(p)) \
2239 : (UTF8_IS_DOWNGRADEABLE_START(*(p)) \
2240 ? ((LIKELY((e) - (p) > 1 && UTF8_IS_CONTINUATION(*((p)+1)))) \
2241 ? macro(EIGHT_BIT_UTF8_TO_NATIVE(*(p), *((p)+1))) \
2242 : (_force_out_malformed_utf8_message( \
2243 (U8 *) (p), (U8 *) (e), 0, 1), 0)) \
2244 : above_latin1))
2245
2246#define _generic_LC_swash_utf8_safe(macro, classnum, p, e) \
2247 _generic_LC_utf8_safe(macro, p, e, \
2248 _is_utf8_FOO_with_len(classnum, p, e))
2249
2250#define _generic_LC_func_utf8_safe(macro, above_latin1, p, e) \
2251 _generic_LC_utf8_safe(macro, p, e, above_latin1(p, e))
2252
2253#define _generic_LC_non_swash_utf8_safe(classnum, above_latin1, p, e) \
2254 _generic_LC_utf8_safe(classnum, p, e, \
2255 (UNLIKELY((e) - (p) < UTF8SKIP(p)) \
2256 ? (_force_out_malformed_utf8_message( \
2257 (U8 *) (p), (U8 *) (e), 0, 1), 0) \
2258 : above_latin1(p)))
2259
2260#define isALPHANUMERIC_LC_utf8_safe(p, e) \
2261 _generic_LC_swash_utf8_safe(isALPHANUMERIC_LC, \
2262 _CC_ALPHANUMERIC, p, e)
2263#define isALPHA_LC_utf8_safe(p, e) \
2264 _generic_LC_swash_utf8_safe(isALPHA_LC, _CC_ALPHA, p, e)
2265#define isASCII_LC_utf8_safe(p, e) \
2266 (__ASSERT_(_utf8_safe_assert(p, e)) isASCII_LC(*(p)))
2267#define isBLANK_LC_utf8_safe(p, e) \
2268 _generic_LC_non_swash_utf8_safe(isBLANK_LC, is_HORIZWS_high, p, e)
2269#define isCNTRL_LC_utf8_safe(p, e) \
2270 _generic_LC_utf8_safe(isCNTRL_LC, p, e, 0)
2271#define isDIGIT_LC_utf8_safe(p, e) \
2272 _generic_LC_swash_utf8_safe(isDIGIT_LC, _CC_DIGIT, p, e)
2273#define isGRAPH_LC_utf8_safe(p, e) \
2274 _generic_LC_swash_utf8_safe(isGRAPH_LC, _CC_GRAPH, p, e)
2275#define isIDCONT_LC_utf8_safe(p, e) \
2276 _generic_LC_func_utf8_safe(isIDCONT_LC, \
2277 _is_utf8_perl_idcont_with_len, p, e)
2278#define isIDFIRST_LC_utf8_safe(p, e) \
2279 _generic_LC_func_utf8_safe(isIDFIRST_LC, \
2280 _is_utf8_perl_idstart_with_len, p, e)
2281#define isLOWER_LC_utf8_safe(p, e) \
2282 _generic_LC_swash_utf8_safe(isLOWER_LC, _CC_LOWER, p, e)
2283#define isPRINT_LC_utf8_safe(p, e) \
2284 _generic_LC_swash_utf8_safe(isPRINT_LC, _CC_PRINT, p, e)
2285#define isPSXSPC_LC_utf8_safe(p, e) isSPACE_LC_utf8_safe(p, e)
2286#define isPUNCT_LC_utf8_safe(p, e) \
2287 _generic_LC_swash_utf8_safe(isPUNCT_LC, _CC_PUNCT, p, e)
2288#define isSPACE_LC_utf8_safe(p, e) \
2289 _generic_LC_non_swash_utf8_safe(isSPACE_LC, is_XPERLSPACE_high, p, e)
2290#define isUPPER_LC_utf8_safe(p, e) \
2291 _generic_LC_swash_utf8_safe(isUPPER_LC, _CC_UPPER, p, e)
2292#define isWORDCHAR_LC_utf8_safe(p, e) \
2293 _generic_LC_swash_utf8_safe(isWORDCHAR_LC, _CC_WORDCHAR, p, e)
2294#define isXDIGIT_LC_utf8_safe(p, e) \
2295 _generic_LC_non_swash_utf8_safe(isXDIGIT_LC, is_XDIGIT_high, p, e)
aaa51d5e 2296
fbc19f27
KW
2297/* Macros for backwards compatibility and for completeness when the ASCII and
2298 * Latin1 values are identical */
b7d90381
KW
2299#define isALPHAU(c) isALPHA_L1(c)
2300#define isDIGIT_L1(c) isDIGIT_A(c)
2301#define isOCTAL(c) isOCTAL_A(c)
2302#define isOCTAL_L1(c) isOCTAL_A(c)
2303#define isXDIGIT_L1(c) isXDIGIT_A(c)
2304#define isALNUM(c) isWORDCHAR(c)
a377c856 2305#define isALNUM_A(c) isALNUM(c)
b7d90381
KW
2306#define isALNUMU(c) isWORDCHAR_L1(c)
2307#define isALNUM_LC(c) isWORDCHAR_LC(c)
2308#define isALNUM_uni(c) isWORDCHAR_uni(c)
2e28f0b9 2309#define isALNUM_LC_uvchr(c) isWORDCHAR_LC_uvchr(c)
b7d90381
KW
2310#define isALNUM_utf8(p) isWORDCHAR_utf8(p)
2311#define isALNUM_LC_utf8(p) isWORDCHAR_LC_utf8(p)
2312#define isALNUMC_A(c) isALPHANUMERIC_A(c) /* Mnemonic: "C's alnum" */
2313#define isALNUMC_L1(c) isALPHANUMERIC_L1(c)
2314#define isALNUMC(c) isALPHANUMERIC(c)
2315#define isALNUMC_LC(c) isALPHANUMERIC_LC(c)
2316#define isALNUMC_uni(c) isALPHANUMERIC_uni(c)
15861f94 2317#define isALNUMC_LC_uvchr(c) isALPHANUMERIC_LC_uvchr(c)
b7d90381 2318#define isALNUMC_utf8(p) isALPHANUMERIC_utf8(p)
15861f94 2319#define isALNUMC_LC_utf8(p) isALPHANUMERIC_LC_utf8(p)
fbc19f27 2320
2bd1cbf6
KW
2321/* On EBCDIC platforms, CTRL-@ is 0, CTRL-A is 1, etc, just like on ASCII,
2322 * except that they don't necessarily mean the same characters, e.g. CTRL-D is
2323 * 4 on both systems, but that is EOT on ASCII; ST on EBCDIC.
2324 * '?' is special-cased on EBCDIC to APC, which is the control there that is
2325 * the outlier from the block that contains the other controls, just like
2326 * toCTRL('?') on ASCII yields DEL, the control that is the outlier from the C0
2327 * block. If it weren't special cased, it would yield a non-control.
88794300
KW
2328 * The conversion works both ways, so toCTRL('D') is 4, and toCTRL(4) is D,
2329 * etc. */
2bd1cbf6 2330#ifndef EBCDIC
75763b3a 2331# define toCTRL(c) (__ASSERT_(FITS_IN_8_BITS(c)) toUPPER(((U8)(c))) ^ 64)
2bd1cbf6 2332#else
75763b3a
KW
2333# define toCTRL(c) (__ASSERT_(FITS_IN_8_BITS(c)) \
2334 ((isPRINT_A(c)) \
2335 ? (UNLIKELY((c) == '?') \
2336 ? QUESTION_MARK_CTRL \
2337 : (NATIVE_TO_LATIN1(toUPPER((U8) (c))) ^ 64)) \
2338 : (UNLIKELY((c) == QUESTION_MARK_CTRL) \
2339 ? '?' \
2340 : (LATIN1_TO_NATIVE(((U8) (c)) ^ 64)))))
2bd1cbf6 2341#endif
bbce6d69 2342
dea28490
JJ
2343/* Line numbers are unsigned, 32 bits. */
2344typedef U32 line_t;
e5dcd934 2345#define NOLINE ((line_t) 4294967295UL) /* = FFFFFFFF */
378cc40b 2346
91152fc1
DG
2347/* Helpful alias for version prescan */
2348#define is_LAX_VERSION(a,b) \
2349 (a != Perl_prescan_version(aTHX_ a, FALSE, b, NULL, NULL, NULL, NULL))
2350
2351#define is_STRICT_VERSION(a,b) \
2352 (a != Perl_prescan_version(aTHX_ a, TRUE, b, NULL, NULL, NULL, NULL))
2353
2354#define BADVERSION(a,b,c) \
2355 if (b) { \
2356 *b = c; \
2357 } \
2358 return a;
8c52afec 2359
cb27eebd
KW
2360/* Converts a character known to represent a hexadecimal digit (0-9, A-F, or
2361 * a-f) to its numeric value. READ_XDIGIT's argument is a string pointer,
2362 * which is advanced. The input is validated only by an assert() in DEBUGGING
2363 * builds. In both ASCII and EBCDIC the last 4 bits of the digits are 0-9; and
2364 * the last 4 bits of A-F and a-f are 1-6, so adding 9 yields 10-15 */
2365#define XDIGIT_VALUE(c) (__ASSERT_(isXDIGIT(c)) (0xf & (isDIGIT(c) \
2366 ? (c) \
2367 : ((c) + 9))))
902008b8
KW
2368#define READ_XDIGIT(s) (__ASSERT_(isXDIGIT(*s)) (0xf & (isDIGIT(*(s)) \
2369 ? (*(s)++) \
2370 : (*(s)++ + 9))))
95a59cab 2371
cb27eebd
KW
2372/* Converts a character known to represent an octal digit (0-7) to its numeric
2373 * value. The input is validated only by an assert() in DEBUGGING builds. In
2374 * both ASCII and EBCDIC the last 3 bits of the octal digits range from 0-7. */
2375#define OCTAL_VALUE(c) (__ASSERT_(isOCTAL(c)) (7 & (c)))
2376
305b8651
KW
2377/* Efficiently returns a boolean as to if two native characters are equivalent
2378 * case-insenstively. At least one of the characters must be one of [A-Za-z];
2379 * the ALPHA in the name is to remind you of that. This is asserted() in
2380 * DEBUGGING builds. Because [A-Za-z] are invariant under UTF-8, this macro
2381 * works (on valid input) for both non- and UTF-8-encoded bytes.
2382 *
2383 * When one of the inputs is a compile-time constant and gets folded by the
2384 * compiler, this reduces to an AND and a TEST. On both EBCDIC and ASCII
2385 * machines, 'A' and 'a' differ by a single bit; the same with the upper and
2386 * lower case of all other ASCII-range alphabetics. On ASCII platforms, they
96ca48da
KW
2387 * are 32 apart; on EBCDIC, they are 64. At compile time, this uses an
2388 * exclusive 'or' to find that bit and then inverts it to form a mask, with
2389 * just a single 0, in the bit position where the upper- and lowercase differ.
2390 * */
305b8651
KW
2391#define isALPHA_FOLD_EQ(c1, c2) \
2392 (__ASSERT_(isALPHA_A(c1) || isALPHA_A(c2)) \
2393 ((c1) & ~('A' ^ 'a')) == ((c2) & ~('A' ^ 'a')))
2394#define isALPHA_FOLD_NE(c1, c2) (! isALPHA_FOLD_EQ((c1), (c2)))
2395
8e84507e 2396/*
ccfc67b7
JH
2397=head1 Memory Management
2398
a02a5408 2399=for apidoc Am|void|Newx|void* ptr|int nitems|type
954c1994
GS
2400The XSUB-writer's interface to the C C<malloc> function.
2401
596f7718 2402Memory obtained by this should B<ONLY> be freed with L</"Safefree">.
0d7b2759 2403
c5008215
JC
2404In 5.9.3, Newx() and friends replace the older New() API, and drops
2405the first parameter, I<x>, a debug aid which allowed callers to identify
37b8b4c9 2406themselves. This aid has been superseded by a new build option,
d10b4965 2407PERL_MEM_LOG (see L<perlhacktips/PERL_MEM_LOG>). The older API is still
c5008215
JC
2408there for use in XS modules supporting older perls.
2409
a02a5408 2410=for apidoc Am|void|Newxc|void* ptr|int nitems|type|cast
954c1994 2411The XSUB-writer's interface to the C C<malloc> function, with
fbe13c60 2412cast. See also C<L</Newx>>.
954c1994 2413
596f7718 2414Memory obtained by this should B<ONLY> be freed with L</"Safefree">.
0d7b2759 2415
a02a5408 2416=for apidoc Am|void|Newxz|void* ptr|int nitems|type
954c1994 2417The XSUB-writer's interface to the C C<malloc> function. The allocated
fbe13c60 2418memory is zeroed with C<memzero>. See also C<L</Newx>>.
a02a5408 2419
596f7718 2420Memory obtained by this should B<ONLY> be freed with L</"Safefree">.
0d7b2759 2421
954c1994
GS
2422=for apidoc Am|void|Renew|void* ptr|int nitems|type
2423The XSUB-writer's interface to the C C<realloc> function.
2424
596f7718 2425Memory obtained by this should B<ONLY> be freed with L</"Safefree">.
0d7b2759 2426
954c1994
GS
2427=for apidoc Am|void|Renewc|void* ptr|int nitems|type|cast
2428The XSUB-writer's interface to the C C<realloc> function, with
2429cast.
2430
596f7718 2431Memory obtained by this should B<ONLY> be freed with L</"Safefree">.
0d7b2759 2432
49b8b560 2433=for apidoc Am|void|Safefree|void* ptr
954c1994
GS
2434The XSUB-writer's interface to the C C<free> function.
2435
596f7718 2436This should B<ONLY> be used on memory obtained using L</"Newx"> and friends.
0d7b2759 2437
954c1994
GS
2438=for apidoc Am|void|Move|void* src|void* dest|int nitems|type
2439The XSUB-writer's interface to the C C<memmove> function. The C<src> is the
926bb54c 2440source, C<dest> is the destination, C<nitems> is the number of items, and
fbe13c60 2441C<type> is the type. Can do overlapping moves. See also C<L</Copy>>.
954c1994 2442
e90e2364 2443=for apidoc Am|void *|MoveD|void* src|void* dest|int nitems|type
796b6530 2444Like C<Move> but returns C<dest>. Useful
72d33970 2445for encouraging compilers to tail-call
e90e2364
NC
2446optimise.
2447
954c1994
GS
2448=for apidoc Am|void|Copy|void* src|void* dest|int nitems|type
2449The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the
926bb54c 2450source, C<dest> is the destination, C<nitems> is the number of items, and
fbe13c60 2451C<type> is the type. May fail on overlapping copies. See also C<L</Move>>.
954c1994 2452
e90e2364
NC
2453=for apidoc Am|void *|CopyD|void* src|void* dest|int nitems|type
2454
796b6530 2455Like C<Copy> but returns C<dest>. Useful
72d33970 2456for encouraging compilers to tail-call
e90e2364
NC
2457optimise.
2458
954c1994
GS
2459=for apidoc Am|void|Zero|void* dest|int nitems|type
2460
2461The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the
2462destination, C<nitems> is the number of items, and C<type> is the type.
2463
e90e2364
NC
2464=for apidoc Am|void *|ZeroD|void* dest|int nitems|type
2465
72d33970
FC
2466Like C<Zero> but returns dest. Useful
2467for encouraging compilers to tail-call
e90e2364
NC
2468optimise.
2469
da5d8dbb 2470=for apidoc Am|void|StructCopy|type *src|type *dest|type
4375e838 2471This is an architecture-independent macro to copy one structure to another.
954c1994 2472
7e337ee0
JH
2473=for apidoc Am|void|PoisonWith|void* dest|int nitems|type|U8 byte
2474
2475Fill up memory with a byte pattern (a byte repeated over and over
2476again) that hopefully catches attempts to access uninitialized memory.
2477
2478=for apidoc Am|void|PoisonNew|void* dest|int nitems|type
2479
2480PoisonWith(0xAB) for catching access to allocated but uninitialized memory.
2481
1c12ffb4 2482=for apidoc Am|void|PoisonFree|void* dest|int nitems|type
7e337ee0
JH
2483
2484PoisonWith(0xEF) for catching access to freed memory.
2485
9965345d
JH
2486=for apidoc Am|void|Poison|void* dest|int nitems|type
2487
7e337ee0 2488PoisonWith(0xEF) for catching access to freed memory.
9965345d
JH
2489
2490=cut */
954c1994 2491
561b68a9
SH
2492/* Maintained for backwards-compatibility only. Use newSV() instead. */
2493#ifndef PERL_CORE
ff06c60c 2494#define NEWSV(x,len) newSV(len)
561b68a9 2495#endif
ff06c60c 2496
b7112dce 2497#define MEM_SIZE_MAX ((MEM_SIZE)-1)
19a94d75 2498
a500027b 2499#define _PERL_STRLEN_ROUNDUP_UNCHECKED(n) (((n) - 1 + PERL_STRLEN_ROUNDUP_QUANTUM) & ~((MEM_SIZE)PERL_STRLEN_ROUNDUP_QUANTUM - 1))
e6bdf523 2500
27d5b266 2501#ifdef PERL_MALLOC_WRAP
e6bdf523
DM
2502
2503/* This expression will be constant-folded at compile time. It checks
2504 * whether or not the type of the count n is so small (e.g. U8 or U16, or
2505 * U32 on 64-bit systems) that there's no way a wrap-around could occur.
2506 * As well as avoiding the need for a run-time check in some cases, it's
2507 * designed to avoid compiler warnings like:
2508 * comparison is always false due to limited range of data type
73e8ff00
DM
2509 * It's mathematically equivalent to
2510 * max(n) * sizeof(t) > MEM_SIZE_MAX
e6bdf523
DM
2511 */
2512
2513# define _MEM_WRAP_NEEDS_RUNTIME_CHECK(n,t) \
445198b9
LM
2514 ( sizeof(MEM_SIZE) < sizeof(n) \
2515 || sizeof(t) > ((MEM_SIZE)1 << 8*(sizeof(MEM_SIZE) - sizeof(n))))
e6bdf523 2516
88f9f128 2517/* This is written in a slightly odd way to avoid various spurious
d98e5cde
DM
2518 * compiler warnings. We *want* to write the expression as
2519 * _MEM_WRAP_NEEDS_RUNTIME_CHECK(n,t) && (n > C)
2520 * (for some compile-time constant C), but even when the LHS
2521 * constant-folds to false at compile-time, g++ insists on emitting
2522 * warnings about the RHS (e.g. "comparison is always false"), so instead
2523 * we write it as
e6bdf523 2524 *
d98e5cde 2525 * (cond ? n : X) > C
88f9f128 2526 *
d98e5cde
DM
2527 * where X is a constant with X > C always false. Choosing a value for X
2528 * is tricky. If 0, some compilers will complain about 0 > C always being
2529 * false; if 1, Coverity complains when n happens to be the constant value
2530 * '1', that cond ? 1 : 1 has the same value on both branches; so use C
2531 * for X and hope that nothing else whines.
e6bdf523
DM
2532 */
2533
2534# define _MEM_WRAP_WILL_WRAP(n,t) \
88f9f128
DM
2535 ((_MEM_WRAP_NEEDS_RUNTIME_CHECK(n,t) ? (MEM_SIZE)(n) : \
2536 MEM_SIZE_MAX/sizeof(t)) > MEM_SIZE_MAX/sizeof(t))
e6bdf523
DM
2537
2538# define MEM_WRAP_CHECK(n,t) \
2539 (void)(UNLIKELY(_MEM_WRAP_WILL_WRAP(n,t)) \
2540 && (croak_memory_wrap(),0))
2541
2542# define MEM_WRAP_CHECK_1(n,t,a) \
2543 (void)(UNLIKELY(_MEM_WRAP_WILL_WRAP(n,t)) \
2544 && (Perl_croak_nocontext("%s",(a)),0))
2545
814eedc8
DD
2546/* "a" arg must be a string literal */
2547# define MEM_WRAP_CHECK_s(n,t,a) \
2548 (void)(UNLIKELY(_MEM_WRAP_WILL_WRAP(n,t)) \
2549 && (Perl_croak_nocontext("" a ""),0))
2550
8b44ba4c 2551#define MEM_WRAP_CHECK_(n,t) MEM_WRAP_CHECK(n,t),
27d5b266 2552
a500027b 2553#define PERL_STRLEN_ROUNDUP(n) ((void)(((n) > MEM_SIZE_MAX - 2 * PERL_STRLEN_ROUNDUP_QUANTUM) ? (croak_memory_wrap(),0) : 0), _PERL_STRLEN_ROUNDUP_UNCHECKED(n))
27d5b266
JH
2554#else
2555
410319be
NC
2556#define MEM_WRAP_CHECK(n,t)
2557#define MEM_WRAP_CHECK_1(n,t,a)
814eedc8 2558#define MEM_WRAP_CHECK_s(n,t,a)
8b44ba4c
NC
2559#define MEM_WRAP_CHECK_(n,t)
2560
a500027b 2561#define PERL_STRLEN_ROUNDUP(n) _PERL_STRLEN_ROUNDUP_UNCHECKED(n)
27d5b266 2562
1936d2a7 2563#endif
8b44ba4c 2564
fe4f188c 2565#ifdef PERL_MEM_LOG
46c6c7e2 2566/*
9f653bb5 2567 * If PERL_MEM_LOG is defined, all Newx()s, Renew()s, and Safefree()s
46c6c7e2
JH
2568 * go through functions, which are handy for debugging breakpoints, but
2569 * which more importantly get the immediate calling environment (file and
e352bcff
JH
2570 * line number, and C function name if available) passed in. This info can
2571 * then be used for logging the calls, for which one gets a sample
73d1d973 2572 * implementation unless -DPERL_MEM_LOG_NOIMPL is also defined.
3609ea0d 2573 *
46c6c7e2 2574 * Known problems:
94e892a6 2575 * - not all memory allocs get logged, only those
46c6c7e2 2576 * that go through Newx() and derivatives (while all
94e892a6 2577 * Safefrees do get logged)
46c6c7e2
JH
2578 * - __FILE__ and __LINE__ do not work everywhere
2579 * - __func__ or __FUNCTION__ even less so
2580 * - I think more goes on after the perlio frees but
2581 * the thing is that STDERR gets closed (as do all
2582 * the file descriptors)
2583 * - no deeper calling stack than the caller of the Newx()
2584 * or the kind, but do I look like a C reflection/introspection
2585 * utility to you?
2586 * - the function prototypes for the logging functions
2587 * probably should maybe be somewhere else than handy.h
2588 * - one could consider inlining (macrofying) the logging
2589 * for speed, but I am too lazy
2590 * - one could imagine recording the allocations in a hash,
2591 * (keyed by the allocation address?), and maintain that
2592 * through reallocs and frees, but how to do that without
2593 * any News() happening...?
73d1d973 2594 * - lots of -Ddefines to get useful/controllable output
b953482e 2595 * - lots of ENV reads
46c6c7e2
JH
2596 */
2597
0b0ab801 2598# ifdef PERL_CORE
73d1d973 2599# ifndef PERL_MEM_LOG_NOIMPL
0b0ab801
MHM
2600enum mem_log_type {
2601 MLT_ALLOC,
2602 MLT_REALLOC,
d7a2c63c
MHM
2603 MLT_FREE,
2604 MLT_NEW_SV,
2605 MLT_DEL_SV
0b0ab801
MHM
2606};
2607# endif
12754f92 2608# if defined(PERL_IN_SV_C) /* those are only used in sv.c */
d7a2c63c
MHM
2609void Perl_mem_log_new_sv(const SV *sv, const char *filename, const int linenumber, const char *funcname);
2610void Perl_mem_log_del_sv(const SV *sv, const char *filename, const int linenumber, const char *funcname);
12754f92 2611# endif
0b0ab801
MHM
2612# endif
2613
fe4f188c
JH
2614#endif
2615
2616#ifdef PERL_MEM_LOG
d1401ee9
MHM
2617#define MEM_LOG_ALLOC(n,t,a) Perl_mem_log_alloc(n,sizeof(t),STRINGIFY(t),a,__FILE__,__LINE__,FUNCTION__)
2618#define MEM_LOG_REALLOC(n,t,v,a) Perl_mem_log_realloc(n,sizeof(t),STRINGIFY(t),v,a,__FILE__,__LINE__,FUNCTION__)
46c6c7e2 2619#define MEM_LOG_FREE(a) Perl_mem_log_free(a,__FILE__,__LINE__,FUNCTION__)
fe4f188c
JH
2620#endif
2621
2622#ifndef MEM_LOG_ALLOC
2623#define MEM_LOG_ALLOC(n,t,a) (a)
2624#endif
2625#ifndef MEM_LOG_REALLOC
2626#define MEM_LOG_REALLOC(n,t,v,a) (a)
2627#endif
2628#ifndef MEM_LOG_FREE
2629#define MEM_LOG_FREE(a) (a)
2630#endif
2631
d1401ee9
MHM
2632#define Newx(v,n,t) (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_ALLOC(n,t,safemalloc((MEM_SIZE)((n)*sizeof(t))))))
2633#define Newxc(v,n,t,c) (v = (MEM_WRAP_CHECK_(n,t) (c*)MEM_LOG_ALLOC(n,t,safemalloc((MEM_SIZE)((n)*sizeof(t))))))
2634#define Newxz(v,n,t) (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_ALLOC(n,t,safecalloc((n),sizeof(t)))))
a6f6820f
NC
2635
2636#ifndef PERL_CORE
a02a5408
JC
2637/* pre 5.9.x compatibility */
2638#define New(x,v,n,t) Newx(v,n,t)
2639#define Newc(x,v,n,t,c) Newxc(v,n,t,c)
4541904d 2640#define Newz(x,v,n,t) Newxz(v,n,t)
a6f6820f 2641#endif
a02a5408 2642
ff68c719 2643#define Renew(v,n,t) \
d1401ee9 2644 (v = (MEM_WRAP_CHECK_(n,t) (t*)MEM_LOG_REALLOC(n,t,v,saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))))
ff68c719 2645#define Renewc(v,n,t,c) \
d1401ee9 2646 (v = (MEM_WRAP_CHECK_(n,t) (c*)MEM_LOG_REALLOC(n,t,v,saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))))
94010e71
NC
2647
2648#ifdef PERL_POISON
2649#define Safefree(d) \
06c0cc96 2650 ((d) ? (void)(safefree(MEM_LOG_FREE((Malloc_t)(d))), Poison(&(d), 1, Malloc_t)) : (void) 0)
94010e71 2651#else
fe4f188c 2652#define Safefree(d) safefree(MEM_LOG_FREE((Malloc_t)(d)))
94010e71 2653#endif
55497cff 2654
dbb57106
YO
2655/* assert that a valid ptr has been supplied - use this instead of assert(ptr) *
2656 * as it handles cases like constant string arguments without throwing warnings *
2657 * the cast is required, as is the inequality check, to avoid warnings */
45908e4d 2658#define perl_assert_ptr(p) assert( ((void*)(p)) != 0 )
55497cff 2659
45908e4d
YO
2660
2661#define Move(s,d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), perl_assert_ptr(s), (void)memmove((char*)(d),(const char*)(s), (n) * sizeof(t)))
2662#define Copy(s,d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), perl_assert_ptr(s), (void)memcpy((char*)(d),(const char*)(s), (n) * sizeof(t)))
2663#define Zero(d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), (void)memzero((char*)(d), (n) * sizeof(t)))
2664
bdd1531d 2665/* Like above, but returns a pointer to 'd' */
45908e4d
YO
2666#define MoveD(s,d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), perl_assert_ptr(s), memmove((char*)(d),(const char*)(s), (n) * sizeof(t)))
2667#define CopyD(s,d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), perl_assert_ptr(s), memcpy((char*)(d),(const char*)(s), (n) * sizeof(t)))
45908e4d 2668#define ZeroD(d,n,t) (MEM_WRAP_CHECK_(n,t) perl_assert_ptr(d), memzero((char*)(d), (n) * sizeof(t)))
e90e2364 2669
7e337ee0
JH
2670#define PoisonWith(d,n,t,b) (MEM_WRAP_CHECK_(n,t) (void)memset((char*)(d), (U8)(b), (n) * sizeof(t)))
2671#define PoisonNew(d,n,t) PoisonWith(d,n,t,0xAB)
2672#define PoisonFree(d,n,t) PoisonWith(d,n,t,0xEF)
2673#define Poison(d,n,t) PoisonFree(d,n,t)
27d5b266 2674
caa674f3
DD
2675#ifdef PERL_POISON
2676# define PERL_POISON_EXPR(x) x
2677#else
2678# define PERL_POISON_EXPR(x)
2679#endif
2680
ff68c719 2681#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
2cc61e15 2682
1b7e2294
KW
2683/*
2684=head1 Handy Values
2685
2686=for apidoc Am|STRLEN|C_ARRAY_LENGTH|void *a
2687
2688Returns the number of elements in the input C array (so you want your
2689zero-based indices to be less than but not equal to).
2690
2691=for apidoc Am|void *|C_ARRAY_END|void *a
2692
2693Returns a pointer to one element past the final element of the input C array.
2694
2695=cut
2696
2697C_ARRAY_END is one past the last: half-open/half-closed range, not
2698last-inclusive range.
2699*/
622913ab 2700#define C_ARRAY_LENGTH(a) (sizeof(a)/sizeof((a)[0]))
c3caa5c3 2701#define C_ARRAY_END(a) ((a) + C_ARRAY_LENGTH(a))
622913ab 2702
2cc61e15
DD
2703#ifdef NEED_VA_COPY
2704# ifdef va_copy
2705# define Perl_va_copy(s, d) va_copy(d, s)
07798b17
AC
2706# elif defined(__va_copy)
2707# define Perl_va_copy(s, d) __va_copy(d, s)
2cc61e15 2708# else
07798b17 2709# define Perl_va_copy(s, d) Copy(s, d, 1, va_list)
2cc61e15
DD
2710# endif
2711#endif
2712
472d47bc
SB
2713/* convenience debug macros */
2714#ifdef USE_ITHREADS
2715#define pTHX_FORMAT "Perl interpreter: 0x%p"
2716#define pTHX__FORMAT ", Perl interpreter: 0x%p"
f54cb97a
AL
2717#define pTHX_VALUE_ (void *)my_perl,
2718#define pTHX_VALUE (void *)my_perl
2719#define pTHX__VALUE_ ,(void *)my_perl,
2720#define pTHX__VALUE ,(void *)my_perl
472d47bc 2721#else
3609ea0d 2722#define pTHX_FORMAT
472d47bc 2723#define pTHX__FORMAT
3609ea0d 2724#define pTHX_VALUE_
472d47bc 2725#define pTHX_VALUE
3609ea0d 2726#define pTHX__VALUE_
472d47bc
SB
2727#define pTHX__VALUE
2728#endif /* USE_ITHREADS */
3609ea0d 2729
2acdbac1
NC
2730/* Perl_deprecate was not part of the public API, and did not have a deprecate()
2731 shortcut macro defined without -DPERL_CORE. Neither codesearch.google.com nor
2732 CPAN::Unpack show any users outside the core. */
2733#ifdef PERL_CORE
dc6e8de0
A
2734# define deprecate(s) Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), \
2735 "Use of " s " is deprecated")
c9680906
A
2736# define deprecate_disappears_in(when,message) \
2737 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), \
2738 message ", and will disappear in Perl " when)
ac641426
A
2739# define deprecate_fatal_in(when,message) \
2740 Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), \
2741 message ". Its use will be fatal in Perl " when)
2acdbac1
NC
2742#endif
2743
dfff4baf
BF
2744/* Internal macros to deal with gids and uids */
2745#ifdef PERL_CORE
2746
2747# if Uid_t_size > IVSIZE
2748# define sv_setuid(sv, uid) sv_setnv((sv), (NV)(uid))
2749# define SvUID(sv) SvNV(sv)
07798b17
AC
2750# elif Uid_t_sign <= 0
2751# define sv_setuid(sv, uid) sv_setiv((sv), (IV)(uid))
2752# define SvUID(sv) SvIV(sv)
dfff4baf 2753# else
07798b17
AC
2754# define sv_setuid(sv, uid) sv_setuv((sv), (UV)(uid))
2755# define SvUID(sv) SvUV(sv)
dfff4baf
BF
2756# endif /* Uid_t_size */
2757
2758# if Gid_t_size > IVSIZE
2759# define sv_setgid(sv, gid) sv_setnv((sv), (NV)(gid))
2760# define SvGID(sv) SvNV(sv)
07798b17
AC
2761# elif Gid_t_sign <= 0
2762# define sv_setgid(sv, gid) sv_setiv((sv), (IV)(gid))
2763# define SvGID(sv) SvIV(sv)
dfff4baf 2764# else
07798b17
AC
2765# define sv_setgid(sv, gid) sv_setuv((sv), (UV)(gid))
2766# define SvGID(sv) SvUV(sv)
dfff4baf
BF
2767# endif /* Gid_t_size */
2768
2769#endif
2770
6a5bc5ac 2771#endif /* PERL_HANDY_H_ */
9d745869 2772
e9a8c099 2773/*
14d04a33 2774 * ex: set ts=8 sts=4 sw=4 et:
e9a8c099 2775 */