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954c1994 GS |
1 | =head1 NAME |
2 | ||
3 | perlapi - autogenerated documentation for the perl public API | |
4 | ||
5 | =head1 DESCRIPTION | |
6 | ||
1c846c1f NIS |
7 | This file contains the documentation of the perl public API generated by |
8 | embed.pl, specifically a listing of functions, macros, flags, and variables | |
9 | that may be used by extension writers. The interfaces of any functions that | |
954c1994 GS |
10 | are not listed here are subject to change without notice. For this reason, |
11 | blindly using functions listed in proto.h is to be avoided when writing | |
12 | extensions. | |
13 | ||
14 | Note that all Perl API global variables must be referenced with the C<PL_> | |
15 | prefix. Some macros are provided for compatibility with the older, | |
16 | unadorned names, but this support may be disabled in a future release. | |
17 | ||
18 | The listing is alphabetical, case insensitive. | |
19 | ||
20 | =over 8 | |
21 | ||
22 | =item AvFILL | |
23 | ||
24 | Same as C<av_len()>. Deprecated, use C<av_len()> instead. | |
25 | ||
26 | int AvFILL(AV* av) | |
27 | ||
497711e7 GS |
28 | =for hackers |
29 | Found in file av.h | |
30 | ||
954c1994 GS |
31 | =item av_clear |
32 | ||
33 | Clears an array, making it empty. Does not free the memory used by the | |
34 | array itself. | |
35 | ||
36 | void av_clear(AV* ar) | |
37 | ||
497711e7 GS |
38 | =for hackers |
39 | Found in file av.c | |
40 | ||
f3b76584 SC |
41 | =item av_delete |
42 | ||
43 | Deletes the element indexed by C<key> from the array. Returns the | |
44 | deleted element. C<flags> is currently ignored. | |
45 | ||
46 | SV* av_delete(AV* ar, I32 key, I32 flags) | |
47 | ||
48 | =for hackers | |
49 | Found in file av.c | |
50 | ||
51 | =item av_exists | |
52 | ||
53 | Returns true if the element indexed by C<key> has been initialized. | |
54 | ||
55 | This relies on the fact that uninitialized array elements are set to | |
56 | C<&PL_sv_undef>. | |
57 | ||
58 | bool av_exists(AV* ar, I32 key) | |
59 | ||
60 | =for hackers | |
61 | Found in file av.c | |
62 | ||
954c1994 GS |
63 | =item av_extend |
64 | ||
65 | Pre-extend an array. The C<key> is the index to which the array should be | |
66 | extended. | |
67 | ||
68 | void av_extend(AV* ar, I32 key) | |
69 | ||
497711e7 GS |
70 | =for hackers |
71 | Found in file av.c | |
72 | ||
954c1994 GS |
73 | =item av_fetch |
74 | ||
75 | Returns the SV at the specified index in the array. The C<key> is the | |
76 | index. If C<lval> is set then the fetch will be part of a store. Check | |
77 | that the return value is non-null before dereferencing it to a C<SV*>. | |
78 | ||
96f1132b GS |
79 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for |
80 | more information on how to use this function on tied arrays. | |
954c1994 GS |
81 | |
82 | SV** av_fetch(AV* ar, I32 key, I32 lval) | |
83 | ||
497711e7 GS |
84 | =for hackers |
85 | Found in file av.c | |
86 | ||
f3b76584 SC |
87 | =item av_fill |
88 | ||
89 | Ensure than an array has a given number of elements, equivalent to | |
90 | Perl's C<$#array = $fill;>. | |
91 | ||
92 | void av_fill(AV* ar, I32 fill) | |
93 | ||
94 | =for hackers | |
95 | Found in file av.c | |
96 | ||
954c1994 GS |
97 | =item av_len |
98 | ||
99 | Returns the highest index in the array. Returns -1 if the array is | |
100 | empty. | |
101 | ||
102 | I32 av_len(AV* ar) | |
103 | ||
497711e7 GS |
104 | =for hackers |
105 | Found in file av.c | |
106 | ||
954c1994 GS |
107 | =item av_make |
108 | ||
109 | Creates a new AV and populates it with a list of SVs. The SVs are copied | |
110 | into the array, so they may be freed after the call to av_make. The new AV | |
111 | will have a reference count of 1. | |
112 | ||
113 | AV* av_make(I32 size, SV** svp) | |
114 | ||
497711e7 GS |
115 | =for hackers |
116 | Found in file av.c | |
117 | ||
954c1994 GS |
118 | =item av_pop |
119 | ||
120 | Pops an SV off the end of the array. Returns C<&PL_sv_undef> if the array | |
121 | is empty. | |
122 | ||
123 | SV* av_pop(AV* ar) | |
124 | ||
497711e7 GS |
125 | =for hackers |
126 | Found in file av.c | |
127 | ||
954c1994 GS |
128 | =item av_push |
129 | ||
130 | Pushes an SV onto the end of the array. The array will grow automatically | |
131 | to accommodate the addition. | |
132 | ||
133 | void av_push(AV* ar, SV* val) | |
134 | ||
497711e7 GS |
135 | =for hackers |
136 | Found in file av.c | |
137 | ||
954c1994 GS |
138 | =item av_shift |
139 | ||
140 | Shifts an SV off the beginning of the array. | |
141 | ||
142 | SV* av_shift(AV* ar) | |
143 | ||
497711e7 GS |
144 | =for hackers |
145 | Found in file av.c | |
146 | ||
954c1994 GS |
147 | =item av_store |
148 | ||
149 | Stores an SV in an array. The array index is specified as C<key>. The | |
150 | return value will be NULL if the operation failed or if the value did not | |
151 | need to be actually stored within the array (as in the case of tied | |
152 | arrays). Otherwise it can be dereferenced to get the original C<SV*>. Note | |
153 | that the caller is responsible for suitably incrementing the reference | |
154 | count of C<val> before the call, and decrementing it if the function | |
155 | returned NULL. | |
156 | ||
96f1132b | 157 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for |
954c1994 GS |
158 | more information on how to use this function on tied arrays. |
159 | ||
160 | SV** av_store(AV* ar, I32 key, SV* val) | |
161 | ||
497711e7 GS |
162 | =for hackers |
163 | Found in file av.c | |
164 | ||
954c1994 GS |
165 | =item av_undef |
166 | ||
167 | Undefines the array. Frees the memory used by the array itself. | |
168 | ||
169 | void av_undef(AV* ar) | |
170 | ||
497711e7 GS |
171 | =for hackers |
172 | Found in file av.c | |
173 | ||
954c1994 GS |
174 | =item av_unshift |
175 | ||
176 | Unshift the given number of C<undef> values onto the beginning of the | |
177 | array. The array will grow automatically to accommodate the addition. You | |
178 | must then use C<av_store> to assign values to these new elements. | |
179 | ||
180 | void av_unshift(AV* ar, I32 num) | |
181 | ||
497711e7 GS |
182 | =for hackers |
183 | Found in file av.c | |
184 | ||
9f2ea798 DM |
185 | =item ax |
186 | ||
187 | Variable which is setup by C<xsubpp> to indicate the stack base offset, | |
188 | used by the C<ST>, C<XSprePUSH> and C<XSRETURN> macros. The C<dMARK> macro | |
189 | must be called prior to setup the C<MARK> variable. | |
190 | ||
191 | I32 ax | |
192 | ||
193 | =for hackers | |
194 | Found in file XSUB.h | |
195 | ||
f9a63242 JH |
196 | =item bytes_from_utf8 |
197 | ||
198 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. | |
199 | Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to | |
ef9edfd0 JH |
200 | the newly-created string, and updates C<len> to contain the new |
201 | length. Returns the original string if no conversion occurs, C<len> | |
202 | is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to | |
203 | 0 if C<s> is converted or contains all 7bit characters. | |
f9a63242 JH |
204 | |
205 | NOTE: this function is experimental and may change or be | |
206 | removed without notice. | |
207 | ||
208 | U8* bytes_from_utf8(U8 *s, STRLEN *len, bool *is_utf8) | |
209 | ||
210 | =for hackers | |
211 | Found in file utf8.c | |
212 | ||
497711e7 GS |
213 | =item bytes_to_utf8 |
214 | ||
215 | Converts a string C<s> of length C<len> from ASCII into UTF8 encoding. | |
6662521e GS |
216 | Returns a pointer to the newly-created string, and sets C<len> to |
217 | reflect the new length. | |
497711e7 | 218 | |
eebe1485 SC |
219 | NOTE: this function is experimental and may change or be |
220 | removed without notice. | |
221 | ||
222 | U8* bytes_to_utf8(U8 *s, STRLEN *len) | |
497711e7 GS |
223 | |
224 | =for hackers | |
225 | Found in file utf8.c | |
226 | ||
954c1994 GS |
227 | =item call_argv |
228 | ||
229 | Performs a callback to the specified Perl sub. See L<perlcall>. | |
230 | ||
231 | NOTE: the perl_ form of this function is deprecated. | |
232 | ||
233 | I32 call_argv(const char* sub_name, I32 flags, char** argv) | |
234 | ||
497711e7 GS |
235 | =for hackers |
236 | Found in file perl.c | |
237 | ||
954c1994 GS |
238 | =item call_method |
239 | ||
240 | Performs a callback to the specified Perl method. The blessed object must | |
241 | be on the stack. See L<perlcall>. | |
242 | ||
243 | NOTE: the perl_ form of this function is deprecated. | |
244 | ||
245 | I32 call_method(const char* methname, I32 flags) | |
246 | ||
497711e7 GS |
247 | =for hackers |
248 | Found in file perl.c | |
249 | ||
954c1994 GS |
250 | =item call_pv |
251 | ||
252 | Performs a callback to the specified Perl sub. See L<perlcall>. | |
253 | ||
254 | NOTE: the perl_ form of this function is deprecated. | |
255 | ||
256 | I32 call_pv(const char* sub_name, I32 flags) | |
257 | ||
497711e7 GS |
258 | =for hackers |
259 | Found in file perl.c | |
260 | ||
954c1994 GS |
261 | =item call_sv |
262 | ||
263 | Performs a callback to the Perl sub whose name is in the SV. See | |
264 | L<perlcall>. | |
265 | ||
266 | NOTE: the perl_ form of this function is deprecated. | |
267 | ||
268 | I32 call_sv(SV* sv, I32 flags) | |
269 | ||
497711e7 GS |
270 | =for hackers |
271 | Found in file perl.c | |
272 | ||
954c1994 GS |
273 | =item CLASS |
274 | ||
275 | Variable which is setup by C<xsubpp> to indicate the | |
276 | class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>. | |
277 | ||
278 | char* CLASS | |
279 | ||
497711e7 GS |
280 | =for hackers |
281 | Found in file XSUB.h | |
282 | ||
954c1994 GS |
283 | =item Copy |
284 | ||
285 | The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the | |
286 | source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is | |
287 | the type. May fail on overlapping copies. See also C<Move>. | |
288 | ||
289 | void Copy(void* src, void* dest, int nitems, type) | |
290 | ||
497711e7 GS |
291 | =for hackers |
292 | Found in file handy.h | |
293 | ||
954c1994 GS |
294 | =item croak |
295 | ||
c9d5ac95 GS |
296 | This is the XSUB-writer's interface to Perl's C<die> function. |
297 | Normally use this function the same way you use the C C<printf> | |
298 | function. See C<warn>. | |
299 | ||
300 | If you want to throw an exception object, assign the object to | |
301 | C<$@> and then pass C<Nullch> to croak(): | |
302 | ||
303 | errsv = get_sv("@", TRUE); | |
304 | sv_setsv(errsv, exception_object); | |
305 | croak(Nullch); | |
954c1994 GS |
306 | |
307 | void croak(const char* pat, ...) | |
308 | ||
497711e7 GS |
309 | =for hackers |
310 | Found in file util.c | |
311 | ||
954c1994 GS |
312 | =item CvSTASH |
313 | ||
314 | Returns the stash of the CV. | |
315 | ||
316 | HV* CvSTASH(CV* cv) | |
317 | ||
497711e7 GS |
318 | =for hackers |
319 | Found in file cv.h | |
320 | ||
beab0874 JT |
321 | =item cv_const_sv |
322 | ||
323 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
324 | value returned by the sub. Otherwise, returns NULL. | |
325 | ||
326 | Constant subs can be created with C<newCONSTSUB> or as described in | |
327 | L<perlsub/"Constant Functions">. | |
328 | ||
329 | SV* cv_const_sv(CV* cv) | |
330 | ||
331 | =for hackers | |
a1ea730d | 332 | Found in file op.c |
beab0874 | 333 | |
9f2ea798 DM |
334 | =item dAX |
335 | ||
336 | Sets up the C<ax> variable. | |
337 | This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>. | |
338 | ||
339 | dAX; | |
340 | ||
341 | =for hackers | |
342 | Found in file XSUB.h | |
343 | ||
344 | =item dITEMS | |
345 | ||
346 | Sets up the C<items> variable. | |
347 | This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>. | |
348 | ||
349 | dITEMS; | |
350 | ||
351 | =for hackers | |
352 | Found in file XSUB.h | |
353 | ||
954c1994 GS |
354 | =item dMARK |
355 | ||
356 | Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and | |
357 | C<dORIGMARK>. | |
358 | ||
359 | dMARK; | |
360 | ||
497711e7 GS |
361 | =for hackers |
362 | Found in file pp.h | |
363 | ||
954c1994 GS |
364 | =item dORIGMARK |
365 | ||
366 | Saves the original stack mark for the XSUB. See C<ORIGMARK>. | |
367 | ||
368 | dORIGMARK; | |
369 | ||
497711e7 GS |
370 | =for hackers |
371 | Found in file pp.h | |
372 | ||
954c1994 GS |
373 | =item dSP |
374 | ||
375 | Declares a local copy of perl's stack pointer for the XSUB, available via | |
376 | the C<SP> macro. See C<SP>. | |
377 | ||
378 | dSP; | |
379 | ||
497711e7 GS |
380 | =for hackers |
381 | Found in file pp.h | |
382 | ||
954c1994 GS |
383 | =item dXSARGS |
384 | ||
9f2ea798 DM |
385 | Sets up stack and mark pointers for an XSUB, calling dSP and dMARK. |
386 | Sets up the C<ax> and C<items> variables by calling C<dAX> and C<dITEMS>. | |
387 | This is usually handled automatically by C<xsubpp>. | |
954c1994 GS |
388 | |
389 | dXSARGS; | |
390 | ||
497711e7 GS |
391 | =for hackers |
392 | Found in file XSUB.h | |
393 | ||
954c1994 GS |
394 | =item dXSI32 |
395 | ||
396 | Sets up the C<ix> variable for an XSUB which has aliases. This is usually | |
397 | handled automatically by C<xsubpp>. | |
398 | ||
399 | dXSI32; | |
400 | ||
497711e7 GS |
401 | =for hackers |
402 | Found in file XSUB.h | |
403 | ||
954c1994 GS |
404 | =item ENTER |
405 | ||
406 | Opening bracket on a callback. See C<LEAVE> and L<perlcall>. | |
407 | ||
408 | ENTER; | |
409 | ||
497711e7 GS |
410 | =for hackers |
411 | Found in file scope.h | |
412 | ||
954c1994 GS |
413 | =item eval_pv |
414 | ||
415 | Tells Perl to C<eval> the given string and return an SV* result. | |
416 | ||
417 | NOTE: the perl_ form of this function is deprecated. | |
418 | ||
419 | SV* eval_pv(const char* p, I32 croak_on_error) | |
420 | ||
497711e7 GS |
421 | =for hackers |
422 | Found in file perl.c | |
423 | ||
954c1994 GS |
424 | =item eval_sv |
425 | ||
426 | Tells Perl to C<eval> the string in the SV. | |
427 | ||
428 | NOTE: the perl_ form of this function is deprecated. | |
429 | ||
430 | I32 eval_sv(SV* sv, I32 flags) | |
431 | ||
497711e7 GS |
432 | =for hackers |
433 | Found in file perl.c | |
434 | ||
954c1994 GS |
435 | =item EXTEND |
436 | ||
437 | Used to extend the argument stack for an XSUB's return values. Once | |
4375e838 | 438 | used, guarantees that there is room for at least C<nitems> to be pushed |
954c1994 GS |
439 | onto the stack. |
440 | ||
441 | void EXTEND(SP, int nitems) | |
442 | ||
497711e7 GS |
443 | =for hackers |
444 | Found in file pp.h | |
445 | ||
954c1994 GS |
446 | =item fbm_compile |
447 | ||
448 | Analyses the string in order to make fast searches on it using fbm_instr() | |
449 | -- the Boyer-Moore algorithm. | |
450 | ||
451 | void fbm_compile(SV* sv, U32 flags) | |
452 | ||
497711e7 GS |
453 | =for hackers |
454 | Found in file util.c | |
455 | ||
954c1994 GS |
456 | =item fbm_instr |
457 | ||
458 | Returns the location of the SV in the string delimited by C<str> and | |
459 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
460 | does not have to be fbm_compiled, but the search will not be as fast | |
461 | then. | |
462 | ||
463 | char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlesv, U32 flags) | |
464 | ||
497711e7 GS |
465 | =for hackers |
466 | Found in file util.c | |
467 | ||
954c1994 GS |
468 | =item FREETMPS |
469 | ||
470 | Closing bracket for temporaries on a callback. See C<SAVETMPS> and | |
471 | L<perlcall>. | |
472 | ||
473 | FREETMPS; | |
474 | ||
497711e7 GS |
475 | =for hackers |
476 | Found in file scope.h | |
477 | ||
89423764 GS |
478 | =item getcwd_sv |
479 | ||
480 | Fill the sv with current working directory | |
481 | ||
482 | int getcwd_sv(SV* sv) | |
483 | ||
484 | =for hackers | |
485 | Found in file util.c | |
486 | ||
954c1994 GS |
487 | =item get_av |
488 | ||
489 | Returns the AV of the specified Perl array. If C<create> is set and the | |
490 | Perl variable does not exist then it will be created. If C<create> is not | |
491 | set and the variable does not exist then NULL is returned. | |
492 | ||
493 | NOTE: the perl_ form of this function is deprecated. | |
494 | ||
495 | AV* get_av(const char* name, I32 create) | |
496 | ||
497711e7 GS |
497 | =for hackers |
498 | Found in file perl.c | |
499 | ||
954c1994 GS |
500 | =item get_cv |
501 | ||
502 | Returns the CV of the specified Perl subroutine. If C<create> is set and | |
503 | the Perl subroutine does not exist then it will be declared (which has the | |
504 | same effect as saying C<sub name;>). If C<create> is not set and the | |
505 | subroutine does not exist then NULL is returned. | |
506 | ||
507 | NOTE: the perl_ form of this function is deprecated. | |
508 | ||
509 | CV* get_cv(const char* name, I32 create) | |
510 | ||
497711e7 GS |
511 | =for hackers |
512 | Found in file perl.c | |
513 | ||
954c1994 GS |
514 | =item get_hv |
515 | ||
516 | Returns the HV of the specified Perl hash. If C<create> is set and the | |
517 | Perl variable does not exist then it will be created. If C<create> is not | |
518 | set and the variable does not exist then NULL is returned. | |
519 | ||
520 | NOTE: the perl_ form of this function is deprecated. | |
521 | ||
522 | HV* get_hv(const char* name, I32 create) | |
523 | ||
497711e7 GS |
524 | =for hackers |
525 | Found in file perl.c | |
526 | ||
954c1994 GS |
527 | =item get_sv |
528 | ||
529 | Returns the SV of the specified Perl scalar. If C<create> is set and the | |
530 | Perl variable does not exist then it will be created. If C<create> is not | |
531 | set and the variable does not exist then NULL is returned. | |
532 | ||
533 | NOTE: the perl_ form of this function is deprecated. | |
534 | ||
535 | SV* get_sv(const char* name, I32 create) | |
536 | ||
497711e7 GS |
537 | =for hackers |
538 | Found in file perl.c | |
539 | ||
954c1994 GS |
540 | =item GIMME |
541 | ||
542 | A backward-compatible version of C<GIMME_V> which can only return | |
543 | C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>. | |
544 | Deprecated. Use C<GIMME_V> instead. | |
545 | ||
546 | U32 GIMME | |
547 | ||
497711e7 GS |
548 | =for hackers |
549 | Found in file op.h | |
550 | ||
954c1994 GS |
551 | =item GIMME_V |
552 | ||
553 | The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>, | |
90fdbbb7 | 554 | C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context, |
954c1994 GS |
555 | respectively. |
556 | ||
557 | U32 GIMME_V | |
558 | ||
497711e7 GS |
559 | =for hackers |
560 | Found in file op.h | |
561 | ||
6e9d1081 NC |
562 | =item grok_bin |
563 | ||
564 | converts a string representing a binary number to numeric form. | |
565 | ||
566 | On entry I<start> and I<*len> give the string to scan, I<*flags> gives | |
567 | conversion flags, and I<result> should be NULL or a pointer to an NV. | |
568 | The scan stops at the end of the string, or the first invalid character. | |
569 | On return I<*len> is set to the length scanned string, and I<*flags> gives | |
570 | output flags. | |
571 | ||
572 | If the value is <= UV_MAX it is returned as a UV, the output flags are clear, | |
573 | and nothing is written to I<*result>. If the value is > UV_MAX C<grok_bin> | |
574 | returns UV_MAX, sets C<PERL_SCAN_GREATER_THAN_UV_MAX> in the output flags, | |
575 | and writes the value to I<*result> (or the value is discarded if I<result> | |
576 | is NULL). | |
577 | ||
d1be9408 | 578 | The hex number may optionally be prefixed with "0b" or "b" unless |
cae16f1a JH |
579 | C<PERL_SCAN_DISALLOW_PREFIX> is set in I<*flags> on entry. If |
580 | C<PERL_SCAN_ALLOW_UNDERSCORES> is set in I<*flags> then the binary | |
6e9d1081 NC |
581 | number may use '_' characters to separate digits. |
582 | ||
583 | UV grok_bin(char* start, STRLEN* len, I32* flags, NV *result) | |
584 | ||
585 | =for hackers | |
586 | Found in file numeric.c | |
587 | ||
588 | =item grok_hex | |
589 | ||
590 | converts a string representing a hex number to numeric form. | |
591 | ||
592 | On entry I<start> and I<*len> give the string to scan, I<*flags> gives | |
593 | conversion flags, and I<result> should be NULL or a pointer to an NV. | |
594 | The scan stops at the end of the string, or the first non-hex-digit character. | |
595 | On return I<*len> is set to the length scanned string, and I<*flags> gives | |
596 | output flags. | |
597 | ||
598 | If the value is <= UV_MAX it is returned as a UV, the output flags are clear, | |
599 | and nothing is written to I<*result>. If the value is > UV_MAX C<grok_hex> | |
600 | returns UV_MAX, sets C<PERL_SCAN_GREATER_THAN_UV_MAX> in the output flags, | |
601 | and writes the value to I<*result> (or the value is discarded if I<result> | |
602 | is NULL). | |
603 | ||
d1be9408 | 604 | The hex number may optionally be prefixed with "0x" or "x" unless |
cae16f1a JH |
605 | C<PERL_SCAN_DISALLOW_PREFIX> is set in I<*flags> on entry. If |
606 | C<PERL_SCAN_ALLOW_UNDERSCORES> is set in I<*flags> then the hex | |
6e9d1081 NC |
607 | number may use '_' characters to separate digits. |
608 | ||
609 | UV grok_hex(char* start, STRLEN* len, I32* flags, NV *result) | |
610 | ||
611 | =for hackers | |
612 | Found in file numeric.c | |
613 | ||
dd5dc04f JH |
614 | =item grok_number |
615 | ||
616 | Recognise (or not) a number. The type of the number is returned | |
617 | (0 if unrecognised), otherwise it is a bit-ORed combination of | |
618 | IS_NUMBER_IN_UV, IS_NUMBER_GREATER_THAN_UV_MAX, IS_NUMBER_NOT_INT, | |
793edb8a | 619 | IS_NUMBER_NEG, IS_NUMBER_INFINITY, IS_NUMBER_NAN (defined in perl.h). |
d42b51ea JH |
620 | |
621 | If the value of the number can fit an in UV, it is returned in the *valuep | |
622 | IS_NUMBER_IN_UV will be set to indicate that *valuep is valid, IS_NUMBER_IN_UV | |
623 | will never be set unless *valuep is valid, but *valuep may have been assigned | |
624 | to during processing even though IS_NUMBER_IN_UV is not set on return. | |
625 | If valuep is NULL, IS_NUMBER_IN_UV will be set for the same cases as when | |
626 | valuep is non-NULL, but no actual assignment (or SEGV) will occur. | |
627 | ||
628 | IS_NUMBER_NOT_INT will be set with IS_NUMBER_IN_UV if trailing decimals were | |
629 | seen (in which case *valuep gives the true value truncated to an integer), and | |
630 | IS_NUMBER_NEG if the number is negative (in which case *valuep holds the | |
631 | absolute value). IS_NUMBER_IN_UV is not set if e notation was used or the | |
632 | number is larger than a UV. | |
dd5dc04f JH |
633 | |
634 | int grok_number(const char *pv, STRLEN len, UV *valuep) | |
635 | ||
636 | =for hackers | |
98994639 | 637 | Found in file numeric.c |
dd5dc04f JH |
638 | |
639 | =item grok_numeric_radix | |
640 | ||
641 | Scan and skip for a numeric decimal separator (radix). | |
642 | ||
643 | bool grok_numeric_radix(const char **sp, const char *send) | |
644 | ||
645 | =for hackers | |
98994639 | 646 | Found in file numeric.c |
dd5dc04f | 647 | |
6e9d1081 NC |
648 | =item grok_oct |
649 | ||
650 | ||
651 | UV grok_oct(char* start, STRLEN* len, I32* flags, NV *result) | |
652 | ||
653 | =for hackers | |
654 | Found in file numeric.c | |
655 | ||
954c1994 GS |
656 | =item GvSV |
657 | ||
658 | Return the SV from the GV. | |
659 | ||
660 | SV* GvSV(GV* gv) | |
661 | ||
497711e7 GS |
662 | =for hackers |
663 | Found in file gv.h | |
664 | ||
954c1994 GS |
665 | =item gv_fetchmeth |
666 | ||
667 | Returns the glob with the given C<name> and a defined subroutine or | |
668 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
a453c169 | 669 | accessible via @ISA and UNIVERSAL::. |
954c1994 GS |
670 | |
671 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
672 | side-effect creates a glob with the given C<name> in the given C<stash> | |
673 | which in the case of success contains an alias for the subroutine, and sets | |
1c846c1f | 674 | up caching info for this glob. Similarly for all the searched stashes. |
954c1994 GS |
675 | |
676 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
677 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 678 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 | 679 | the GV directly; instead, you should use the method's CV, which can be |
1c846c1f | 680 | obtained from the GV with the C<GvCV> macro. |
954c1994 GS |
681 | |
682 | GV* gv_fetchmeth(HV* stash, const char* name, STRLEN len, I32 level) | |
683 | ||
497711e7 GS |
684 | =for hackers |
685 | Found in file gv.c | |
686 | ||
954c1994 GS |
687 | =item gv_fetchmethod |
688 | ||
6d0f518e | 689 | See L<gv_fetchmethod_autoload>. |
954c1994 GS |
690 | |
691 | GV* gv_fetchmethod(HV* stash, const char* name) | |
692 | ||
497711e7 GS |
693 | =for hackers |
694 | Found in file gv.c | |
695 | ||
954c1994 GS |
696 | =item gv_fetchmethod_autoload |
697 | ||
698 | Returns the glob which contains the subroutine to call to invoke the method | |
699 | on the C<stash>. In fact in the presence of autoloading this may be the | |
700 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
1c846c1f | 701 | already setup. |
954c1994 GS |
702 | |
703 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
704 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
1c846c1f | 705 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. |
954c1994 | 706 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> |
1c846c1f | 707 | with a non-zero C<autoload> parameter. |
954c1994 GS |
708 | |
709 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
710 | that if you want to keep the returned glob for a long time, you need to | |
711 | check for it being "AUTOLOAD", since at the later time the call may load a | |
712 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
1c846c1f | 713 | created via a side effect to do this. |
954c1994 GS |
714 | |
715 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
716 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
717 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
1c846c1f | 718 | C<call_sv> apply equally to these functions. |
954c1994 GS |
719 | |
720 | GV* gv_fetchmethod_autoload(HV* stash, const char* name, I32 autoload) | |
721 | ||
497711e7 GS |
722 | =for hackers |
723 | Found in file gv.c | |
724 | ||
954c1994 GS |
725 | =item gv_stashpv |
726 | ||
386d01d6 GS |
727 | Returns a pointer to the stash for a specified package. C<name> should |
728 | be a valid UTF-8 string. If C<create> is set then the package will be | |
729 | created if it does not already exist. If C<create> is not set and the | |
730 | package does not exist then NULL is returned. | |
954c1994 GS |
731 | |
732 | HV* gv_stashpv(const char* name, I32 create) | |
733 | ||
497711e7 GS |
734 | =for hackers |
735 | Found in file gv.c | |
736 | ||
954c1994 GS |
737 | =item gv_stashsv |
738 | ||
386d01d6 GS |
739 | Returns a pointer to the stash for a specified package, which must be a |
740 | valid UTF-8 string. See C<gv_stashpv>. | |
954c1994 GS |
741 | |
742 | HV* gv_stashsv(SV* sv, I32 create) | |
743 | ||
497711e7 GS |
744 | =for hackers |
745 | Found in file gv.c | |
746 | ||
954c1994 GS |
747 | =item G_ARRAY |
748 | ||
90fdbbb7 | 749 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 GS |
750 | L<perlcall>. |
751 | ||
497711e7 GS |
752 | =for hackers |
753 | Found in file cop.h | |
754 | ||
954c1994 GS |
755 | =item G_DISCARD |
756 | ||
757 | Indicates that arguments returned from a callback should be discarded. See | |
758 | L<perlcall>. | |
759 | ||
497711e7 GS |
760 | =for hackers |
761 | Found in file cop.h | |
762 | ||
954c1994 GS |
763 | =item G_EVAL |
764 | ||
765 | Used to force a Perl C<eval> wrapper around a callback. See | |
766 | L<perlcall>. | |
767 | ||
497711e7 GS |
768 | =for hackers |
769 | Found in file cop.h | |
770 | ||
954c1994 GS |
771 | =item G_NOARGS |
772 | ||
773 | Indicates that no arguments are being sent to a callback. See | |
774 | L<perlcall>. | |
775 | ||
497711e7 GS |
776 | =for hackers |
777 | Found in file cop.h | |
778 | ||
954c1994 GS |
779 | =item G_SCALAR |
780 | ||
781 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
782 | L<perlcall>. | |
783 | ||
497711e7 GS |
784 | =for hackers |
785 | Found in file cop.h | |
786 | ||
954c1994 GS |
787 | =item G_VOID |
788 | ||
789 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
790 | ||
497711e7 GS |
791 | =for hackers |
792 | Found in file cop.h | |
793 | ||
954c1994 GS |
794 | =item HEf_SVKEY |
795 | ||
796 | This flag, used in the length slot of hash entries and magic structures, | |
f4758303 | 797 | specifies the structure contains an C<SV*> pointer where a C<char*> pointer |
954c1994 GS |
798 | is to be expected. (For information only--not to be used). |
799 | ||
497711e7 GS |
800 | =for hackers |
801 | Found in file hv.h | |
802 | ||
954c1994 GS |
803 | =item HeHASH |
804 | ||
805 | Returns the computed hash stored in the hash entry. | |
806 | ||
807 | U32 HeHASH(HE* he) | |
808 | ||
497711e7 GS |
809 | =for hackers |
810 | Found in file hv.h | |
811 | ||
954c1994 GS |
812 | =item HeKEY |
813 | ||
814 | Returns the actual pointer stored in the key slot of the hash entry. The | |
815 | pointer may be either C<char*> or C<SV*>, depending on the value of | |
816 | C<HeKLEN()>. Can be assigned to. The C<HePV()> or C<HeSVKEY()> macros are | |
817 | usually preferable for finding the value of a key. | |
818 | ||
819 | void* HeKEY(HE* he) | |
820 | ||
497711e7 GS |
821 | =for hackers |
822 | Found in file hv.h | |
823 | ||
954c1994 GS |
824 | =item HeKLEN |
825 | ||
826 | If this is negative, and amounts to C<HEf_SVKEY>, it indicates the entry | |
827 | holds an C<SV*> key. Otherwise, holds the actual length of the key. Can | |
828 | be assigned to. The C<HePV()> macro is usually preferable for finding key | |
829 | lengths. | |
830 | ||
831 | STRLEN HeKLEN(HE* he) | |
832 | ||
497711e7 GS |
833 | =for hackers |
834 | Found in file hv.h | |
835 | ||
954c1994 GS |
836 | =item HePV |
837 | ||
838 | Returns the key slot of the hash entry as a C<char*> value, doing any | |
839 | necessary dereferencing of possibly C<SV*> keys. The length of the string | |
840 | is placed in C<len> (this is a macro, so do I<not> use C<&len>). If you do | |
841 | not care about what the length of the key is, you may use the global | |
842 | variable C<PL_na>, though this is rather less efficient than using a local | |
843 | variable. Remember though, that hash keys in perl are free to contain | |
844 | embedded nulls, so using C<strlen()> or similar is not a good way to find | |
845 | the length of hash keys. This is very similar to the C<SvPV()> macro | |
846 | described elsewhere in this document. | |
847 | ||
848 | char* HePV(HE* he, STRLEN len) | |
849 | ||
497711e7 GS |
850 | =for hackers |
851 | Found in file hv.h | |
852 | ||
954c1994 GS |
853 | =item HeSVKEY |
854 | ||
855 | Returns the key as an C<SV*>, or C<Nullsv> if the hash entry does not | |
856 | contain an C<SV*> key. | |
857 | ||
858 | SV* HeSVKEY(HE* he) | |
859 | ||
497711e7 GS |
860 | =for hackers |
861 | Found in file hv.h | |
862 | ||
954c1994 GS |
863 | =item HeSVKEY_force |
864 | ||
865 | Returns the key as an C<SV*>. Will create and return a temporary mortal | |
866 | C<SV*> if the hash entry contains only a C<char*> key. | |
867 | ||
868 | SV* HeSVKEY_force(HE* he) | |
869 | ||
497711e7 GS |
870 | =for hackers |
871 | Found in file hv.h | |
872 | ||
954c1994 GS |
873 | =item HeSVKEY_set |
874 | ||
875 | Sets the key to a given C<SV*>, taking care to set the appropriate flags to | |
876 | indicate the presence of an C<SV*> key, and returns the same | |
877 | C<SV*>. | |
878 | ||
879 | SV* HeSVKEY_set(HE* he, SV* sv) | |
880 | ||
497711e7 GS |
881 | =for hackers |
882 | Found in file hv.h | |
883 | ||
954c1994 GS |
884 | =item HeVAL |
885 | ||
886 | Returns the value slot (type C<SV*>) stored in the hash entry. | |
887 | ||
888 | SV* HeVAL(HE* he) | |
889 | ||
497711e7 GS |
890 | =for hackers |
891 | Found in file hv.h | |
892 | ||
954c1994 GS |
893 | =item HvNAME |
894 | ||
895 | Returns the package name of a stash. See C<SvSTASH>, C<CvSTASH>. | |
896 | ||
897 | char* HvNAME(HV* stash) | |
898 | ||
497711e7 GS |
899 | =for hackers |
900 | Found in file hv.h | |
901 | ||
954c1994 GS |
902 | =item hv_clear |
903 | ||
904 | Clears a hash, making it empty. | |
905 | ||
906 | void hv_clear(HV* tb) | |
907 | ||
497711e7 GS |
908 | =for hackers |
909 | Found in file hv.c | |
910 | ||
954c1994 GS |
911 | =item hv_delete |
912 | ||
913 | Deletes a key/value pair in the hash. The value SV is removed from the | |
1c846c1f | 914 | hash and returned to the caller. The C<klen> is the length of the key. |
954c1994 GS |
915 | The C<flags> value will normally be zero; if set to G_DISCARD then NULL |
916 | will be returned. | |
917 | ||
da58a35d | 918 | SV* hv_delete(HV* tb, const char* key, I32 klen, I32 flags) |
954c1994 | 919 | |
497711e7 GS |
920 | =for hackers |
921 | Found in file hv.c | |
922 | ||
954c1994 GS |
923 | =item hv_delete_ent |
924 | ||
925 | Deletes a key/value pair in the hash. The value SV is removed from the | |
926 | hash and returned to the caller. The C<flags> value will normally be zero; | |
927 | if set to G_DISCARD then NULL will be returned. C<hash> can be a valid | |
928 | precomputed hash value, or 0 to ask for it to be computed. | |
929 | ||
930 | SV* hv_delete_ent(HV* tb, SV* key, I32 flags, U32 hash) | |
931 | ||
497711e7 GS |
932 | =for hackers |
933 | Found in file hv.c | |
934 | ||
954c1994 GS |
935 | =item hv_exists |
936 | ||
937 | Returns a boolean indicating whether the specified hash key exists. The | |
938 | C<klen> is the length of the key. | |
939 | ||
da58a35d | 940 | bool hv_exists(HV* tb, const char* key, I32 klen) |
954c1994 | 941 | |
497711e7 GS |
942 | =for hackers |
943 | Found in file hv.c | |
944 | ||
954c1994 GS |
945 | =item hv_exists_ent |
946 | ||
947 | Returns a boolean indicating whether the specified hash key exists. C<hash> | |
948 | can be a valid precomputed hash value, or 0 to ask for it to be | |
949 | computed. | |
950 | ||
951 | bool hv_exists_ent(HV* tb, SV* key, U32 hash) | |
952 | ||
497711e7 GS |
953 | =for hackers |
954 | Found in file hv.c | |
955 | ||
954c1994 GS |
956 | =item hv_fetch |
957 | ||
958 | Returns the SV which corresponds to the specified key in the hash. The | |
959 | C<klen> is the length of the key. If C<lval> is set then the fetch will be | |
960 | part of a store. Check that the return value is non-null before | |
f4758303 | 961 | dereferencing it to an C<SV*>. |
954c1994 | 962 | |
96f1132b | 963 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
964 | information on how to use this function on tied hashes. |
965 | ||
da58a35d | 966 | SV** hv_fetch(HV* tb, const char* key, I32 klen, I32 lval) |
954c1994 | 967 | |
497711e7 GS |
968 | =for hackers |
969 | Found in file hv.c | |
970 | ||
954c1994 GS |
971 | =item hv_fetch_ent |
972 | ||
973 | Returns the hash entry which corresponds to the specified key in the hash. | |
974 | C<hash> must be a valid precomputed hash number for the given C<key>, or 0 | |
975 | if you want the function to compute it. IF C<lval> is set then the fetch | |
976 | will be part of a store. Make sure the return value is non-null before | |
977 | accessing it. The return value when C<tb> is a tied hash is a pointer to a | |
978 | static location, so be sure to make a copy of the structure if you need to | |
1c846c1f | 979 | store it somewhere. |
954c1994 | 980 | |
96f1132b | 981 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
982 | information on how to use this function on tied hashes. |
983 | ||
984 | HE* hv_fetch_ent(HV* tb, SV* key, I32 lval, U32 hash) | |
985 | ||
497711e7 GS |
986 | =for hackers |
987 | Found in file hv.c | |
988 | ||
954c1994 GS |
989 | =item hv_iterinit |
990 | ||
991 | Prepares a starting point to traverse a hash table. Returns the number of | |
992 | keys in the hash (i.e. the same as C<HvKEYS(tb)>). The return value is | |
1c846c1f | 993 | currently only meaningful for hashes without tie magic. |
954c1994 GS |
994 | |
995 | NOTE: Before version 5.004_65, C<hv_iterinit> used to return the number of | |
996 | hash buckets that happen to be in use. If you still need that esoteric | |
997 | value, you can get it through the macro C<HvFILL(tb)>. | |
998 | ||
999 | I32 hv_iterinit(HV* tb) | |
1000 | ||
497711e7 GS |
1001 | =for hackers |
1002 | Found in file hv.c | |
1003 | ||
954c1994 GS |
1004 | =item hv_iterkey |
1005 | ||
1006 | Returns the key from the current position of the hash iterator. See | |
1007 | C<hv_iterinit>. | |
1008 | ||
1009 | char* hv_iterkey(HE* entry, I32* retlen) | |
1010 | ||
497711e7 GS |
1011 | =for hackers |
1012 | Found in file hv.c | |
1013 | ||
954c1994 GS |
1014 | =item hv_iterkeysv |
1015 | ||
1016 | Returns the key as an C<SV*> from the current position of the hash | |
1017 | iterator. The return value will always be a mortal copy of the key. Also | |
1018 | see C<hv_iterinit>. | |
1019 | ||
1020 | SV* hv_iterkeysv(HE* entry) | |
1021 | ||
497711e7 GS |
1022 | =for hackers |
1023 | Found in file hv.c | |
1024 | ||
954c1994 GS |
1025 | =item hv_iternext |
1026 | ||
1027 | Returns entries from a hash iterator. See C<hv_iterinit>. | |
1028 | ||
1029 | HE* hv_iternext(HV* tb) | |
1030 | ||
497711e7 GS |
1031 | =for hackers |
1032 | Found in file hv.c | |
1033 | ||
954c1994 GS |
1034 | =item hv_iternextsv |
1035 | ||
1036 | Performs an C<hv_iternext>, C<hv_iterkey>, and C<hv_iterval> in one | |
1037 | operation. | |
1038 | ||
1039 | SV* hv_iternextsv(HV* hv, char** key, I32* retlen) | |
1040 | ||
497711e7 GS |
1041 | =for hackers |
1042 | Found in file hv.c | |
1043 | ||
954c1994 GS |
1044 | =item hv_iterval |
1045 | ||
1046 | Returns the value from the current position of the hash iterator. See | |
1047 | C<hv_iterkey>. | |
1048 | ||
1049 | SV* hv_iterval(HV* tb, HE* entry) | |
1050 | ||
497711e7 GS |
1051 | =for hackers |
1052 | Found in file hv.c | |
1053 | ||
954c1994 GS |
1054 | =item hv_magic |
1055 | ||
1056 | Adds magic to a hash. See C<sv_magic>. | |
1057 | ||
1058 | void hv_magic(HV* hv, GV* gv, int how) | |
1059 | ||
497711e7 GS |
1060 | =for hackers |
1061 | Found in file hv.c | |
1062 | ||
954c1994 GS |
1063 | =item hv_store |
1064 | ||
1065 | Stores an SV in a hash. The hash key is specified as C<key> and C<klen> is | |
1066 | the length of the key. The C<hash> parameter is the precomputed hash | |
1067 | value; if it is zero then Perl will compute it. The return value will be | |
1068 | NULL if the operation failed or if the value did not need to be actually | |
1069 | stored within the hash (as in the case of tied hashes). Otherwise it can | |
1070 | be dereferenced to get the original C<SV*>. Note that the caller is | |
1071 | responsible for suitably incrementing the reference count of C<val> before | |
1c846c1f | 1072 | the call, and decrementing it if the function returned NULL. |
954c1994 | 1073 | |
96f1132b | 1074 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
1075 | information on how to use this function on tied hashes. |
1076 | ||
da58a35d | 1077 | SV** hv_store(HV* tb, const char* key, I32 klen, SV* val, U32 hash) |
954c1994 | 1078 | |
497711e7 GS |
1079 | =for hackers |
1080 | Found in file hv.c | |
1081 | ||
954c1994 GS |
1082 | =item hv_store_ent |
1083 | ||
1084 | Stores C<val> in a hash. The hash key is specified as C<key>. The C<hash> | |
1085 | parameter is the precomputed hash value; if it is zero then Perl will | |
1086 | compute it. The return value is the new hash entry so created. It will be | |
1087 | NULL if the operation failed or if the value did not need to be actually | |
1088 | stored within the hash (as in the case of tied hashes). Otherwise the | |
f22d8e4b | 1089 | contents of the return value can be accessed using the C<He?> macros |
954c1994 GS |
1090 | described here. Note that the caller is responsible for suitably |
1091 | incrementing the reference count of C<val> before the call, and | |
1c846c1f | 1092 | decrementing it if the function returned NULL. |
954c1994 | 1093 | |
96f1132b | 1094 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
1095 | information on how to use this function on tied hashes. |
1096 | ||
1097 | HE* hv_store_ent(HV* tb, SV* key, SV* val, U32 hash) | |
1098 | ||
497711e7 GS |
1099 | =for hackers |
1100 | Found in file hv.c | |
1101 | ||
954c1994 GS |
1102 | =item hv_undef |
1103 | ||
1104 | Undefines the hash. | |
1105 | ||
1106 | void hv_undef(HV* tb) | |
1107 | ||
497711e7 GS |
1108 | =for hackers |
1109 | Found in file hv.c | |
1110 | ||
954c1994 GS |
1111 | =item isALNUM |
1112 | ||
4375e838 | 1113 | Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric |
f1cbbd6e | 1114 | character (including underscore) or digit. |
954c1994 GS |
1115 | |
1116 | bool isALNUM(char ch) | |
1117 | ||
497711e7 GS |
1118 | =for hackers |
1119 | Found in file handy.h | |
1120 | ||
954c1994 GS |
1121 | =item isALPHA |
1122 | ||
4375e838 | 1123 | Returns a boolean indicating whether the C C<char> is an ASCII alphabetic |
954c1994 GS |
1124 | character. |
1125 | ||
1126 | bool isALPHA(char ch) | |
1127 | ||
497711e7 GS |
1128 | =for hackers |
1129 | Found in file handy.h | |
1130 | ||
954c1994 GS |
1131 | =item isDIGIT |
1132 | ||
4375e838 | 1133 | Returns a boolean indicating whether the C C<char> is an ASCII |
954c1994 GS |
1134 | digit. |
1135 | ||
1136 | bool isDIGIT(char ch) | |
1137 | ||
497711e7 GS |
1138 | =for hackers |
1139 | Found in file handy.h | |
1140 | ||
954c1994 GS |
1141 | =item isLOWER |
1142 | ||
1143 | Returns a boolean indicating whether the C C<char> is a lowercase | |
1144 | character. | |
1145 | ||
1146 | bool isLOWER(char ch) | |
1147 | ||
497711e7 GS |
1148 | =for hackers |
1149 | Found in file handy.h | |
1150 | ||
954c1994 GS |
1151 | =item isSPACE |
1152 | ||
1153 | Returns a boolean indicating whether the C C<char> is whitespace. | |
1154 | ||
1155 | bool isSPACE(char ch) | |
1156 | ||
497711e7 GS |
1157 | =for hackers |
1158 | Found in file handy.h | |
1159 | ||
954c1994 GS |
1160 | =item isUPPER |
1161 | ||
1162 | Returns a boolean indicating whether the C C<char> is an uppercase | |
1163 | character. | |
1164 | ||
1165 | bool isUPPER(char ch) | |
1166 | ||
497711e7 GS |
1167 | =for hackers |
1168 | Found in file handy.h | |
1169 | ||
eebe1485 SC |
1170 | =item is_utf8_char |
1171 | ||
5da9da9e | 1172 | Tests if some arbitrary number of bytes begins in a valid UTF-8 |
4d4e713d | 1173 | character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character. |
5da9da9e JH |
1174 | The actual number of bytes in the UTF-8 character will be returned if |
1175 | it is valid, otherwise 0. | |
282f25c9 | 1176 | |
eebe1485 SC |
1177 | STRLEN is_utf8_char(U8 *p) |
1178 | ||
1179 | =for hackers | |
1180 | Found in file utf8.c | |
1181 | ||
1182 | =item is_utf8_string | |
1183 | ||
5da9da9e JH |
1184 | Returns true if first C<len> bytes of the given string form a valid UTF8 |
1185 | string, false otherwise. Note that 'a valid UTF8 string' does not mean | |
1186 | 'a string that contains UTF8' because a valid ASCII string is a valid | |
1187 | UTF8 string. | |
eebe1485 SC |
1188 | |
1189 | bool is_utf8_string(U8 *s, STRLEN len) | |
1190 | ||
1191 | =for hackers | |
1192 | Found in file utf8.c | |
1193 | ||
954c1994 GS |
1194 | =item items |
1195 | ||
1196 | Variable which is setup by C<xsubpp> to indicate the number of | |
1197 | items on the stack. See L<perlxs/"Variable-length Parameter Lists">. | |
1198 | ||
1199 | I32 items | |
1200 | ||
497711e7 GS |
1201 | =for hackers |
1202 | Found in file XSUB.h | |
1203 | ||
954c1994 GS |
1204 | =item ix |
1205 | ||
1206 | Variable which is setup by C<xsubpp> to indicate which of an | |
1207 | XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">. | |
1208 | ||
1209 | I32 ix | |
1210 | ||
497711e7 GS |
1211 | =for hackers |
1212 | Found in file XSUB.h | |
1213 | ||
954c1994 GS |
1214 | =item LEAVE |
1215 | ||
1216 | Closing bracket on a callback. See C<ENTER> and L<perlcall>. | |
1217 | ||
1218 | LEAVE; | |
1219 | ||
497711e7 GS |
1220 | =for hackers |
1221 | Found in file scope.h | |
1222 | ||
7d3fb230 BS |
1223 | =item load_module |
1224 | ||
1225 | Loads the module whose name is pointed to by the string part of name. | |
1226 | Note that the actual module name, not its filename, should be given. | |
1227 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
1228 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
1229 | (or 0 for no flags). ver, if specified, provides version semantics | |
1230 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
1231 | arguments can be used to specify arguments to the module's import() | |
1232 | method, similar to C<use Foo::Bar VERSION LIST>. | |
1233 | ||
1234 | void load_module(U32 flags, SV* name, SV* ver, ...) | |
1235 | ||
1236 | =for hackers | |
a1ea730d | 1237 | Found in file op.c |
7d3fb230 | 1238 | |
954c1994 GS |
1239 | =item looks_like_number |
1240 | ||
645c22ef DM |
1241 | Test if the content of an SV looks like a number (or is a number). |
1242 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1243 | non-numeric warning), even if your atof() doesn't grok them. | |
954c1994 GS |
1244 | |
1245 | I32 looks_like_number(SV* sv) | |
1246 | ||
497711e7 GS |
1247 | =for hackers |
1248 | Found in file sv.c | |
1249 | ||
954c1994 GS |
1250 | =item MARK |
1251 | ||
1252 | Stack marker variable for the XSUB. See C<dMARK>. | |
1253 | ||
497711e7 GS |
1254 | =for hackers |
1255 | Found in file pp.h | |
1256 | ||
954c1994 GS |
1257 | =item mg_clear |
1258 | ||
1259 | Clear something magical that the SV represents. See C<sv_magic>. | |
1260 | ||
1261 | int mg_clear(SV* sv) | |
1262 | ||
497711e7 GS |
1263 | =for hackers |
1264 | Found in file mg.c | |
1265 | ||
954c1994 GS |
1266 | =item mg_copy |
1267 | ||
1268 | Copies the magic from one SV to another. See C<sv_magic>. | |
1269 | ||
1270 | int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen) | |
1271 | ||
497711e7 GS |
1272 | =for hackers |
1273 | Found in file mg.c | |
1274 | ||
954c1994 GS |
1275 | =item mg_find |
1276 | ||
1277 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
1278 | ||
1279 | MAGIC* mg_find(SV* sv, int type) | |
1280 | ||
497711e7 GS |
1281 | =for hackers |
1282 | Found in file mg.c | |
1283 | ||
954c1994 GS |
1284 | =item mg_free |
1285 | ||
1286 | Free any magic storage used by the SV. See C<sv_magic>. | |
1287 | ||
1288 | int mg_free(SV* sv) | |
1289 | ||
497711e7 GS |
1290 | =for hackers |
1291 | Found in file mg.c | |
1292 | ||
954c1994 GS |
1293 | =item mg_get |
1294 | ||
1295 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
1296 | ||
1297 | int mg_get(SV* sv) | |
1298 | ||
497711e7 GS |
1299 | =for hackers |
1300 | Found in file mg.c | |
1301 | ||
954c1994 GS |
1302 | =item mg_length |
1303 | ||
1304 | Report on the SV's length. See C<sv_magic>. | |
1305 | ||
1306 | U32 mg_length(SV* sv) | |
1307 | ||
497711e7 GS |
1308 | =for hackers |
1309 | Found in file mg.c | |
1310 | ||
954c1994 GS |
1311 | =item mg_magical |
1312 | ||
1313 | Turns on the magical status of an SV. See C<sv_magic>. | |
1314 | ||
1315 | void mg_magical(SV* sv) | |
1316 | ||
497711e7 GS |
1317 | =for hackers |
1318 | Found in file mg.c | |
1319 | ||
954c1994 GS |
1320 | =item mg_set |
1321 | ||
1322 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
1323 | ||
1324 | int mg_set(SV* sv) | |
1325 | ||
497711e7 GS |
1326 | =for hackers |
1327 | Found in file mg.c | |
1328 | ||
954c1994 GS |
1329 | =item Move |
1330 | ||
1331 | The XSUB-writer's interface to the C C<memmove> function. The C<src> is the | |
1332 | source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is | |
1333 | the type. Can do overlapping moves. See also C<Copy>. | |
1334 | ||
1335 | void Move(void* src, void* dest, int nitems, type) | |
1336 | ||
497711e7 GS |
1337 | =for hackers |
1338 | Found in file handy.h | |
1339 | ||
954c1994 GS |
1340 | =item New |
1341 | ||
1342 | The XSUB-writer's interface to the C C<malloc> function. | |
1343 | ||
1344 | void New(int id, void* ptr, int nitems, type) | |
1345 | ||
497711e7 GS |
1346 | =for hackers |
1347 | Found in file handy.h | |
1348 | ||
954c1994 GS |
1349 | =item newAV |
1350 | ||
1351 | Creates a new AV. The reference count is set to 1. | |
1352 | ||
1353 | AV* newAV() | |
1354 | ||
497711e7 GS |
1355 | =for hackers |
1356 | Found in file av.c | |
1357 | ||
954c1994 GS |
1358 | =item Newc |
1359 | ||
1360 | The XSUB-writer's interface to the C C<malloc> function, with | |
1361 | cast. | |
1362 | ||
1363 | void Newc(int id, void* ptr, int nitems, type, cast) | |
1364 | ||
497711e7 GS |
1365 | =for hackers |
1366 | Found in file handy.h | |
1367 | ||
954c1994 GS |
1368 | =item newCONSTSUB |
1369 | ||
1370 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
1371 | eligible for inlining at compile-time. | |
1372 | ||
beab0874 | 1373 | CV* newCONSTSUB(HV* stash, char* name, SV* sv) |
954c1994 | 1374 | |
497711e7 | 1375 | =for hackers |
a1ea730d | 1376 | Found in file op.c |
497711e7 | 1377 | |
954c1994 GS |
1378 | =item newHV |
1379 | ||
1380 | Creates a new HV. The reference count is set to 1. | |
1381 | ||
1382 | HV* newHV() | |
1383 | ||
497711e7 GS |
1384 | =for hackers |
1385 | Found in file hv.c | |
1386 | ||
954c1994 GS |
1387 | =item newRV_inc |
1388 | ||
1389 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
1390 | incremented. | |
1391 | ||
1392 | SV* newRV_inc(SV* sv) | |
1393 | ||
497711e7 GS |
1394 | =for hackers |
1395 | Found in file sv.h | |
1396 | ||
954c1994 GS |
1397 | =item newRV_noinc |
1398 | ||
1399 | Creates an RV wrapper for an SV. The reference count for the original | |
1400 | SV is B<not> incremented. | |
1401 | ||
1402 | SV* newRV_noinc(SV *sv) | |
1403 | ||
497711e7 GS |
1404 | =for hackers |
1405 | Found in file sv.c | |
1406 | ||
954c1994 GS |
1407 | =item NEWSV |
1408 | ||
1409 | Creates a new SV. A non-zero C<len> parameter indicates the number of | |
1410 | bytes of preallocated string space the SV should have. An extra byte for a | |
1411 | tailing NUL is also reserved. (SvPOK is not set for the SV even if string | |
444155da | 1412 | space is allocated.) The reference count for the new SV is set to 1. |
954c1994 GS |
1413 | C<id> is an integer id between 0 and 1299 (used to identify leaks). |
1414 | ||
1415 | SV* NEWSV(int id, STRLEN len) | |
1416 | ||
497711e7 GS |
1417 | =for hackers |
1418 | Found in file handy.h | |
1419 | ||
fc3b6798 JH |
1420 | =item newSV |
1421 | ||
1422 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
1423 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
1424 | macro. | |
1425 | ||
1426 | SV* newSV(STRLEN len) | |
1427 | ||
1428 | =for hackers | |
1429 | Found in file sv.c | |
1430 | ||
954c1994 GS |
1431 | =item newSViv |
1432 | ||
1433 | Creates a new SV and copies an integer into it. The reference count for the | |
1434 | SV is set to 1. | |
1435 | ||
1436 | SV* newSViv(IV i) | |
1437 | ||
497711e7 GS |
1438 | =for hackers |
1439 | Found in file sv.c | |
1440 | ||
954c1994 GS |
1441 | =item newSVnv |
1442 | ||
1443 | Creates a new SV and copies a floating point value into it. | |
1444 | The reference count for the SV is set to 1. | |
1445 | ||
1446 | SV* newSVnv(NV n) | |
1447 | ||
497711e7 GS |
1448 | =for hackers |
1449 | Found in file sv.c | |
1450 | ||
954c1994 GS |
1451 | =item newSVpv |
1452 | ||
1453 | Creates a new SV and copies a string into it. The reference count for the | |
1454 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
1455 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
1456 | ||
1457 | SV* newSVpv(const char* s, STRLEN len) | |
1458 | ||
497711e7 GS |
1459 | =for hackers |
1460 | Found in file sv.c | |
1461 | ||
954c1994 GS |
1462 | =item newSVpvf |
1463 | ||
645c22ef | 1464 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
1465 | C<sprintf>. |
1466 | ||
1467 | SV* newSVpvf(const char* pat, ...) | |
1468 | ||
497711e7 GS |
1469 | =for hackers |
1470 | Found in file sv.c | |
1471 | ||
954c1994 GS |
1472 | =item newSVpvn |
1473 | ||
1474 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 1475 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 GS |
1476 | string. You are responsible for ensuring that the source string is at least |
1477 | C<len> bytes long. | |
1478 | ||
1479 | SV* newSVpvn(const char* s, STRLEN len) | |
1480 | ||
497711e7 GS |
1481 | =for hackers |
1482 | Found in file sv.c | |
1483 | ||
1c846c1f NIS |
1484 | =item newSVpvn_share |
1485 | ||
645c22ef DM |
1486 | Creates a new SV with its SvPVX pointing to a shared string in the string |
1487 | table. If the string does not already exist in the table, it is created | |
1488 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
1489 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
1490 | otherwise the hash is computed. The idea here is that as the string table | |
1491 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
1492 | hash lookup will avoid string compare. | |
1c846c1f | 1493 | |
ae154d6d | 1494 | SV* newSVpvn_share(const char* s, I32 len, U32 hash) |
1c846c1f NIS |
1495 | |
1496 | =for hackers | |
1497 | Found in file sv.c | |
1498 | ||
954c1994 GS |
1499 | =item newSVrv |
1500 | ||
1501 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
1502 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
1503 | be blessed in the specified package. The new SV is returned and its | |
1504 | reference count is 1. | |
1505 | ||
1506 | SV* newSVrv(SV* rv, const char* classname) | |
1507 | ||
497711e7 GS |
1508 | =for hackers |
1509 | Found in file sv.c | |
1510 | ||
954c1994 GS |
1511 | =item newSVsv |
1512 | ||
1513 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 1514 | (Uses C<sv_setsv>). |
954c1994 GS |
1515 | |
1516 | SV* newSVsv(SV* old) | |
1517 | ||
497711e7 GS |
1518 | =for hackers |
1519 | Found in file sv.c | |
1520 | ||
1a3327fb JH |
1521 | =item newSVuv |
1522 | ||
1523 | Creates a new SV and copies an unsigned integer into it. | |
1524 | The reference count for the SV is set to 1. | |
1525 | ||
1526 | SV* newSVuv(UV u) | |
1527 | ||
497711e7 GS |
1528 | =for hackers |
1529 | Found in file sv.c | |
1530 | ||
954c1994 GS |
1531 | =item newXS |
1532 | ||
1533 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
1534 | ||
497711e7 | 1535 | =for hackers |
a1ea730d | 1536 | Found in file op.c |
497711e7 | 1537 | |
954c1994 GS |
1538 | =item newXSproto |
1539 | ||
1540 | Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to | |
1541 | the subs. | |
1542 | ||
497711e7 GS |
1543 | =for hackers |
1544 | Found in file XSUB.h | |
1545 | ||
954c1994 GS |
1546 | =item Newz |
1547 | ||
1548 | The XSUB-writer's interface to the C C<malloc> function. The allocated | |
1549 | memory is zeroed with C<memzero>. | |
1550 | ||
1551 | void Newz(int id, void* ptr, int nitems, type) | |
1552 | ||
497711e7 GS |
1553 | =for hackers |
1554 | Found in file handy.h | |
1555 | ||
f4758303 JP |
1556 | =item new_vstring |
1557 | ||
1558 | Returns a pointer to the next character after the parsed | |
1559 | vstring, as well as updating the passed in sv. | |
1560 | * | |
1561 | Function must be called like | |
1562 | ||
1563 | sv = NEWSV(92,5); | |
1564 | s = new_vstring(s,sv); | |
1565 | ||
1566 | The sv must already be large enough to store the vstring | |
1567 | passed in. | |
1568 | ||
1569 | char* new_vstring(char *vstr, SV *sv) | |
1570 | ||
1571 | =for hackers | |
1572 | Found in file util.c | |
1573 | ||
954c1994 GS |
1574 | =item Nullav |
1575 | ||
1576 | Null AV pointer. | |
1577 | ||
497711e7 GS |
1578 | =for hackers |
1579 | Found in file av.h | |
1580 | ||
954c1994 GS |
1581 | =item Nullch |
1582 | ||
1583 | Null character pointer. | |
1584 | ||
497711e7 GS |
1585 | =for hackers |
1586 | Found in file handy.h | |
1587 | ||
954c1994 GS |
1588 | =item Nullcv |
1589 | ||
1590 | Null CV pointer. | |
1591 | ||
497711e7 GS |
1592 | =for hackers |
1593 | Found in file cv.h | |
1594 | ||
954c1994 GS |
1595 | =item Nullhv |
1596 | ||
1597 | Null HV pointer. | |
1598 | ||
497711e7 GS |
1599 | =for hackers |
1600 | Found in file hv.h | |
1601 | ||
954c1994 GS |
1602 | =item Nullsv |
1603 | ||
1604 | Null SV pointer. | |
1605 | ||
497711e7 GS |
1606 | =for hackers |
1607 | Found in file handy.h | |
1608 | ||
954c1994 GS |
1609 | =item ORIGMARK |
1610 | ||
1611 | The original stack mark for the XSUB. See C<dORIGMARK>. | |
1612 | ||
497711e7 GS |
1613 | =for hackers |
1614 | Found in file pp.h | |
1615 | ||
954c1994 GS |
1616 | =item perl_alloc |
1617 | ||
1618 | Allocates a new Perl interpreter. See L<perlembed>. | |
1619 | ||
1620 | PerlInterpreter* perl_alloc() | |
1621 | ||
497711e7 GS |
1622 | =for hackers |
1623 | Found in file perl.c | |
1624 | ||
645c22ef DM |
1625 | =item perl_clone |
1626 | ||
1627 | Create and return a new interpreter by cloning the current one. | |
1628 | ||
1629 | PerlInterpreter* perl_clone(PerlInterpreter* interp, UV flags) | |
1630 | ||
1631 | =for hackers | |
1632 | Found in file sv.c | |
1633 | ||
954c1994 GS |
1634 | =item perl_construct |
1635 | ||
1636 | Initializes a new Perl interpreter. See L<perlembed>. | |
1637 | ||
1638 | void perl_construct(PerlInterpreter* interp) | |
1639 | ||
497711e7 GS |
1640 | =for hackers |
1641 | Found in file perl.c | |
1642 | ||
954c1994 GS |
1643 | =item perl_destruct |
1644 | ||
1645 | Shuts down a Perl interpreter. See L<perlembed>. | |
1646 | ||
d9f424b2 | 1647 | int perl_destruct(PerlInterpreter* interp) |
954c1994 | 1648 | |
497711e7 GS |
1649 | =for hackers |
1650 | Found in file perl.c | |
1651 | ||
954c1994 GS |
1652 | =item perl_free |
1653 | ||
1654 | Releases a Perl interpreter. See L<perlembed>. | |
1655 | ||
1656 | void perl_free(PerlInterpreter* interp) | |
1657 | ||
497711e7 GS |
1658 | =for hackers |
1659 | Found in file perl.c | |
1660 | ||
954c1994 GS |
1661 | =item perl_parse |
1662 | ||
1663 | Tells a Perl interpreter to parse a Perl script. See L<perlembed>. | |
1664 | ||
1665 | int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env) | |
1666 | ||
497711e7 GS |
1667 | =for hackers |
1668 | Found in file perl.c | |
1669 | ||
954c1994 GS |
1670 | =item perl_run |
1671 | ||
1672 | Tells a Perl interpreter to run. See L<perlembed>. | |
1673 | ||
1674 | int perl_run(PerlInterpreter* interp) | |
1675 | ||
497711e7 GS |
1676 | =for hackers |
1677 | Found in file perl.c | |
1678 | ||
954c1994 GS |
1679 | =item PL_modglobal |
1680 | ||
ae154d6d | 1681 | C<PL_modglobal> is a general purpose, interpreter global HV for use by |
954c1994 | 1682 | extensions that need to keep information on a per-interpreter basis. |
ae154d6d JH |
1683 | In a pinch, it can also be used as a symbol table for extensions |
1684 | to share data among each other. It is a good idea to use keys | |
954c1994 GS |
1685 | prefixed by the package name of the extension that owns the data. |
1686 | ||
1687 | HV* PL_modglobal | |
1688 | ||
497711e7 GS |
1689 | =for hackers |
1690 | Found in file intrpvar.h | |
1691 | ||
954c1994 GS |
1692 | =item PL_na |
1693 | ||
1694 | A convenience variable which is typically used with C<SvPV> when one | |
1695 | doesn't care about the length of the string. It is usually more efficient | |
1696 | to either declare a local variable and use that instead or to use the | |
1697 | C<SvPV_nolen> macro. | |
1698 | ||
1699 | STRLEN PL_na | |
1700 | ||
497711e7 GS |
1701 | =for hackers |
1702 | Found in file thrdvar.h | |
1703 | ||
954c1994 GS |
1704 | =item PL_sv_no |
1705 | ||
1706 | This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as | |
1707 | C<&PL_sv_no>. | |
1708 | ||
1709 | SV PL_sv_no | |
1710 | ||
497711e7 GS |
1711 | =for hackers |
1712 | Found in file intrpvar.h | |
1713 | ||
954c1994 GS |
1714 | =item PL_sv_undef |
1715 | ||
1716 | This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>. | |
1717 | ||
1718 | SV PL_sv_undef | |
1719 | ||
497711e7 GS |
1720 | =for hackers |
1721 | Found in file intrpvar.h | |
1722 | ||
954c1994 GS |
1723 | =item PL_sv_yes |
1724 | ||
1725 | This is the C<true> SV. See C<PL_sv_no>. Always refer to this as | |
1726 | C<&PL_sv_yes>. | |
1727 | ||
1728 | SV PL_sv_yes | |
1729 | ||
497711e7 GS |
1730 | =for hackers |
1731 | Found in file intrpvar.h | |
1732 | ||
954c1994 GS |
1733 | =item POPi |
1734 | ||
1735 | Pops an integer off the stack. | |
1736 | ||
1737 | IV POPi | |
1738 | ||
497711e7 GS |
1739 | =for hackers |
1740 | Found in file pp.h | |
1741 | ||
954c1994 GS |
1742 | =item POPl |
1743 | ||
1744 | Pops a long off the stack. | |
1745 | ||
1746 | long POPl | |
1747 | ||
497711e7 GS |
1748 | =for hackers |
1749 | Found in file pp.h | |
1750 | ||
954c1994 GS |
1751 | =item POPn |
1752 | ||
1753 | Pops a double off the stack. | |
1754 | ||
1755 | NV POPn | |
1756 | ||
497711e7 GS |
1757 | =for hackers |
1758 | Found in file pp.h | |
1759 | ||
954c1994 GS |
1760 | =item POPp |
1761 | ||
fa519979 JH |
1762 | Pops a string off the stack. Deprecated. New code should provide |
1763 | a STRLEN n_a and use POPpx. | |
954c1994 GS |
1764 | |
1765 | char* POPp | |
1766 | ||
497711e7 GS |
1767 | =for hackers |
1768 | Found in file pp.h | |
1769 | ||
fa519979 JH |
1770 | =item POPpbytex |
1771 | ||
1772 | Pops a string off the stack which must consist of bytes i.e. characters < 256. | |
1773 | Requires a variable STRLEN n_a in scope. | |
1774 | ||
1775 | char* POPpbytex | |
1776 | ||
1777 | =for hackers | |
1778 | Found in file pp.h | |
1779 | ||
1780 | =item POPpx | |
1781 | ||
1782 | Pops a string off the stack. | |
1783 | Requires a variable STRLEN n_a in scope. | |
1784 | ||
1785 | char* POPpx | |
1786 | ||
1787 | =for hackers | |
1788 | Found in file pp.h | |
1789 | ||
954c1994 GS |
1790 | =item POPs |
1791 | ||
1792 | Pops an SV off the stack. | |
1793 | ||
1794 | SV* POPs | |
1795 | ||
497711e7 GS |
1796 | =for hackers |
1797 | Found in file pp.h | |
1798 | ||
954c1994 GS |
1799 | =item PUSHi |
1800 | ||
1801 | Push an integer onto the stack. The stack must have room for this element. | |
1802 | Handles 'set' magic. See C<XPUSHi>. | |
1803 | ||
1804 | void PUSHi(IV iv) | |
1805 | ||
497711e7 GS |
1806 | =for hackers |
1807 | Found in file pp.h | |
1808 | ||
954c1994 GS |
1809 | =item PUSHMARK |
1810 | ||
1811 | Opening bracket for arguments on a callback. See C<PUTBACK> and | |
1812 | L<perlcall>. | |
1813 | ||
1814 | PUSHMARK; | |
1815 | ||
497711e7 GS |
1816 | =for hackers |
1817 | Found in file pp.h | |
1818 | ||
954c1994 GS |
1819 | =item PUSHn |
1820 | ||
1821 | Push a double onto the stack. The stack must have room for this element. | |
1822 | Handles 'set' magic. See C<XPUSHn>. | |
1823 | ||
1824 | void PUSHn(NV nv) | |
1825 | ||
497711e7 GS |
1826 | =for hackers |
1827 | Found in file pp.h | |
1828 | ||
954c1994 GS |
1829 | =item PUSHp |
1830 | ||
1831 | Push a string onto the stack. The stack must have room for this element. | |
1832 | The C<len> indicates the length of the string. Handles 'set' magic. See | |
1833 | C<XPUSHp>. | |
1834 | ||
1835 | void PUSHp(char* str, STRLEN len) | |
1836 | ||
497711e7 GS |
1837 | =for hackers |
1838 | Found in file pp.h | |
1839 | ||
954c1994 GS |
1840 | =item PUSHs |
1841 | ||
1c846c1f | 1842 | Push an SV onto the stack. The stack must have room for this element. |
954c1994 GS |
1843 | Does not handle 'set' magic. See C<XPUSHs>. |
1844 | ||
1845 | void PUSHs(SV* sv) | |
1846 | ||
497711e7 GS |
1847 | =for hackers |
1848 | Found in file pp.h | |
1849 | ||
954c1994 GS |
1850 | =item PUSHu |
1851 | ||
1852 | Push an unsigned integer onto the stack. The stack must have room for this | |
1853 | element. See C<XPUSHu>. | |
1854 | ||
1855 | void PUSHu(UV uv) | |
1856 | ||
497711e7 GS |
1857 | =for hackers |
1858 | Found in file pp.h | |
1859 | ||
954c1994 GS |
1860 | =item PUTBACK |
1861 | ||
1862 | Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. | |
1863 | See C<PUSHMARK> and L<perlcall> for other uses. | |
1864 | ||
1865 | PUTBACK; | |
1866 | ||
497711e7 GS |
1867 | =for hackers |
1868 | Found in file pp.h | |
1869 | ||
954c1994 GS |
1870 | =item Renew |
1871 | ||
1872 | The XSUB-writer's interface to the C C<realloc> function. | |
1873 | ||
1874 | void Renew(void* ptr, int nitems, type) | |
1875 | ||
497711e7 GS |
1876 | =for hackers |
1877 | Found in file handy.h | |
1878 | ||
954c1994 GS |
1879 | =item Renewc |
1880 | ||
1881 | The XSUB-writer's interface to the C C<realloc> function, with | |
1882 | cast. | |
1883 | ||
1884 | void Renewc(void* ptr, int nitems, type, cast) | |
1885 | ||
497711e7 GS |
1886 | =for hackers |
1887 | Found in file handy.h | |
1888 | ||
954c1994 GS |
1889 | =item require_pv |
1890 | ||
7d3fb230 BS |
1891 | Tells Perl to C<require> the file named by the string argument. It is |
1892 | analogous to the Perl code C<eval "require '$file'">. It's even | |
1893 | implemented that way; consider using Perl_load_module instead. | |
954c1994 GS |
1894 | |
1895 | NOTE: the perl_ form of this function is deprecated. | |
1896 | ||
1897 | void require_pv(const char* pv) | |
1898 | ||
497711e7 GS |
1899 | =for hackers |
1900 | Found in file perl.c | |
1901 | ||
954c1994 GS |
1902 | =item RETVAL |
1903 | ||
1904 | Variable which is setup by C<xsubpp> to hold the return value for an | |
1905 | XSUB. This is always the proper type for the XSUB. See | |
1906 | L<perlxs/"The RETVAL Variable">. | |
1907 | ||
1908 | (whatever) RETVAL | |
1909 | ||
497711e7 GS |
1910 | =for hackers |
1911 | Found in file XSUB.h | |
1912 | ||
954c1994 GS |
1913 | =item Safefree |
1914 | ||
1915 | The XSUB-writer's interface to the C C<free> function. | |
1916 | ||
49b8b560 | 1917 | void Safefree(void* ptr) |
954c1994 | 1918 | |
497711e7 GS |
1919 | =for hackers |
1920 | Found in file handy.h | |
1921 | ||
954c1994 GS |
1922 | =item savepv |
1923 | ||
1924 | Copy a string to a safe spot. This does not use an SV. | |
1925 | ||
1926 | char* savepv(const char* sv) | |
1927 | ||
497711e7 GS |
1928 | =for hackers |
1929 | Found in file util.c | |
1930 | ||
954c1994 GS |
1931 | =item savepvn |
1932 | ||
1933 | Copy a string to a safe spot. The C<len> indicates number of bytes to | |
1934 | copy. This does not use an SV. | |
1935 | ||
1936 | char* savepvn(const char* sv, I32 len) | |
1937 | ||
497711e7 GS |
1938 | =for hackers |
1939 | Found in file util.c | |
1940 | ||
954c1994 GS |
1941 | =item SAVETMPS |
1942 | ||
1943 | Opening bracket for temporaries on a callback. See C<FREETMPS> and | |
1944 | L<perlcall>. | |
1945 | ||
1946 | SAVETMPS; | |
1947 | ||
497711e7 GS |
1948 | =for hackers |
1949 | Found in file scope.h | |
1950 | ||
6e9d1081 NC |
1951 | =item scan_bin |
1952 | ||
1953 | For backwards compatibility. Use C<grok_bin> instead. | |
1954 | ||
1955 | NV scan_bin(char* start, STRLEN len, STRLEN* retlen) | |
1956 | ||
1957 | =for hackers | |
1958 | Found in file numeric.c | |
1959 | ||
1960 | =item scan_hex | |
1961 | ||
1962 | For backwards compatibility. Use C<grok_hex> instead. | |
1963 | ||
1964 | NV scan_hex(char* start, STRLEN len, STRLEN* retlen) | |
1965 | ||
1966 | =for hackers | |
1967 | Found in file numeric.c | |
1968 | ||
1969 | =item scan_oct | |
1970 | ||
1971 | For backwards compatibility. Use C<grok_oct> instead. | |
1972 | ||
1973 | NV scan_oct(char* start, STRLEN len, STRLEN* retlen) | |
1974 | ||
1975 | =for hackers | |
1976 | Found in file numeric.c | |
1977 | ||
cd1ee231 JH |
1978 | =item sharedsv_find |
1979 | ||
1980 | Tries to find if a given SV has a shared backend, either by | |
1981 | looking at magic, or by checking if it is tied again threads::shared. | |
1982 | ||
1983 | shared_sv* sharedsv_find(SV* sv) | |
1984 | ||
1985 | =for hackers | |
1986 | Found in file sharedsv.c | |
1987 | ||
1988 | =item sharedsv_init | |
1989 | ||
1990 | Saves a space for keeping SVs wider than an interpreter, | |
1991 | currently only stores a pointer to the first interpreter. | |
1992 | ||
1993 | void sharedsv_init() | |
1994 | ||
1995 | =for hackers | |
1996 | Found in file sharedsv.c | |
1997 | ||
1998 | =item sharedsv_lock | |
1999 | ||
2000 | Recursive locks on a sharedsv. | |
bd16a5f0 | 2001 | Locks are dynamically scoped at the level of the first lock. |
cd1ee231 JH |
2002 | void sharedsv_lock(shared_sv* ssv) |
2003 | ||
2004 | =for hackers | |
2005 | Found in file sharedsv.c | |
2006 | ||
2007 | =item sharedsv_new | |
2008 | ||
2009 | Allocates a new shared sv struct, you must yourself create the SV/AV/HV. | |
2010 | shared_sv* sharedsv_new() | |
2011 | ||
2012 | =for hackers | |
2013 | Found in file sharedsv.c | |
2014 | ||
2015 | =item sharedsv_thrcnt_dec | |
2016 | ||
2017 | Decrements the threadcount of a shared sv. When a threads frontend is freed | |
2018 | this function should be called. | |
2019 | ||
2020 | void sharedsv_thrcnt_dec(shared_sv* ssv) | |
2021 | ||
2022 | =for hackers | |
2023 | Found in file sharedsv.c | |
2024 | ||
2025 | =item sharedsv_thrcnt_inc | |
2026 | ||
2027 | Increments the threadcount of a sharedsv. | |
2028 | void sharedsv_thrcnt_inc(shared_sv* ssv) | |
2029 | ||
2030 | =for hackers | |
2031 | Found in file sharedsv.c | |
2032 | ||
2033 | =item sharedsv_unlock | |
2034 | ||
2035 | Recursively unlocks a shared sv. | |
2036 | ||
2037 | void sharedsv_unlock(shared_sv* ssv) | |
2038 | ||
2039 | =for hackers | |
2040 | Found in file sharedsv.c | |
2041 | ||
2a5a0c38 JH |
2042 | =item sortsv |
2043 | ||
2044 | Sort an array. Here is an example: | |
2045 | ||
2046 | sortsv(AvARRAY(av), av_len(av)+1, Perl_sv_cmp_locale); | |
2047 | ||
2048 | void sortsv(SV ** array, size_t num_elts, SVCOMPARE_t cmp) | |
2049 | ||
2050 | =for hackers | |
2051 | Found in file pp_sort.c | |
2052 | ||
954c1994 GS |
2053 | =item SP |
2054 | ||
2055 | Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and | |
2056 | C<SPAGAIN>. | |
2057 | ||
497711e7 GS |
2058 | =for hackers |
2059 | Found in file pp.h | |
2060 | ||
954c1994 GS |
2061 | =item SPAGAIN |
2062 | ||
2063 | Refetch the stack pointer. Used after a callback. See L<perlcall>. | |
2064 | ||
2065 | SPAGAIN; | |
2066 | ||
497711e7 GS |
2067 | =for hackers |
2068 | Found in file pp.h | |
2069 | ||
954c1994 GS |
2070 | =item ST |
2071 | ||
2072 | Used to access elements on the XSUB's stack. | |
2073 | ||
2074 | SV* ST(int ix) | |
2075 | ||
497711e7 GS |
2076 | =for hackers |
2077 | Found in file XSUB.h | |
2078 | ||
954c1994 GS |
2079 | =item strEQ |
2080 | ||
2081 | Test two strings to see if they are equal. Returns true or false. | |
2082 | ||
2083 | bool strEQ(char* s1, char* s2) | |
2084 | ||
497711e7 GS |
2085 | =for hackers |
2086 | Found in file handy.h | |
2087 | ||
954c1994 GS |
2088 | =item strGE |
2089 | ||
2090 | Test two strings to see if the first, C<s1>, is greater than or equal to | |
2091 | the second, C<s2>. Returns true or false. | |
2092 | ||
2093 | bool strGE(char* s1, char* s2) | |
2094 | ||
497711e7 GS |
2095 | =for hackers |
2096 | Found in file handy.h | |
2097 | ||
954c1994 GS |
2098 | =item strGT |
2099 | ||
2100 | Test two strings to see if the first, C<s1>, is greater than the second, | |
2101 | C<s2>. Returns true or false. | |
2102 | ||
2103 | bool strGT(char* s1, char* s2) | |
2104 | ||
497711e7 GS |
2105 | =for hackers |
2106 | Found in file handy.h | |
2107 | ||
954c1994 GS |
2108 | =item strLE |
2109 | ||
2110 | Test two strings to see if the first, C<s1>, is less than or equal to the | |
2111 | second, C<s2>. Returns true or false. | |
2112 | ||
2113 | bool strLE(char* s1, char* s2) | |
2114 | ||
497711e7 GS |
2115 | =for hackers |
2116 | Found in file handy.h | |
2117 | ||
954c1994 GS |
2118 | =item strLT |
2119 | ||
2120 | Test two strings to see if the first, C<s1>, is less than the second, | |
2121 | C<s2>. Returns true or false. | |
2122 | ||
2123 | bool strLT(char* s1, char* s2) | |
2124 | ||
497711e7 GS |
2125 | =for hackers |
2126 | Found in file handy.h | |
2127 | ||
954c1994 GS |
2128 | =item strNE |
2129 | ||
2130 | Test two strings to see if they are different. Returns true or | |
2131 | false. | |
2132 | ||
2133 | bool strNE(char* s1, char* s2) | |
2134 | ||
497711e7 GS |
2135 | =for hackers |
2136 | Found in file handy.h | |
2137 | ||
954c1994 GS |
2138 | =item strnEQ |
2139 | ||
2140 | Test two strings to see if they are equal. The C<len> parameter indicates | |
2141 | the number of bytes to compare. Returns true or false. (A wrapper for | |
2142 | C<strncmp>). | |
2143 | ||
2144 | bool strnEQ(char* s1, char* s2, STRLEN len) | |
2145 | ||
497711e7 GS |
2146 | =for hackers |
2147 | Found in file handy.h | |
2148 | ||
954c1994 GS |
2149 | =item strnNE |
2150 | ||
2151 | Test two strings to see if they are different. The C<len> parameter | |
2152 | indicates the number of bytes to compare. Returns true or false. (A | |
2153 | wrapper for C<strncmp>). | |
2154 | ||
2155 | bool strnNE(char* s1, char* s2, STRLEN len) | |
2156 | ||
497711e7 GS |
2157 | =for hackers |
2158 | Found in file handy.h | |
2159 | ||
954c1994 GS |
2160 | =item StructCopy |
2161 | ||
4375e838 | 2162 | This is an architecture-independent macro to copy one structure to another. |
954c1994 GS |
2163 | |
2164 | void StructCopy(type src, type dest, type) | |
2165 | ||
497711e7 GS |
2166 | =for hackers |
2167 | Found in file handy.h | |
2168 | ||
954c1994 GS |
2169 | =item SvCUR |
2170 | ||
2171 | Returns the length of the string which is in the SV. See C<SvLEN>. | |
2172 | ||
2173 | STRLEN SvCUR(SV* sv) | |
2174 | ||
497711e7 GS |
2175 | =for hackers |
2176 | Found in file sv.h | |
2177 | ||
954c1994 GS |
2178 | =item SvCUR_set |
2179 | ||
2180 | Set the length of the string which is in the SV. See C<SvCUR>. | |
2181 | ||
2182 | void SvCUR_set(SV* sv, STRLEN len) | |
2183 | ||
497711e7 GS |
2184 | =for hackers |
2185 | Found in file sv.h | |
2186 | ||
954c1994 GS |
2187 | =item SvEND |
2188 | ||
2189 | Returns a pointer to the last character in the string which is in the SV. | |
2190 | See C<SvCUR>. Access the character as *(SvEND(sv)). | |
2191 | ||
2192 | char* SvEND(SV* sv) | |
2193 | ||
497711e7 GS |
2194 | =for hackers |
2195 | Found in file sv.h | |
2196 | ||
954c1994 GS |
2197 | =item SvGETMAGIC |
2198 | ||
2199 | Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its | |
2200 | argument more than once. | |
2201 | ||
2202 | void SvGETMAGIC(SV* sv) | |
2203 | ||
497711e7 GS |
2204 | =for hackers |
2205 | Found in file sv.h | |
2206 | ||
954c1994 GS |
2207 | =item SvGROW |
2208 | ||
2209 | Expands the character buffer in the SV so that it has room for the | |
2210 | indicated number of bytes (remember to reserve space for an extra trailing | |
8cf8f3d1 | 2211 | NUL character). Calls C<sv_grow> to perform the expansion if necessary. |
954c1994 GS |
2212 | Returns a pointer to the character buffer. |
2213 | ||
679ac26e | 2214 | char * SvGROW(SV* sv, STRLEN len) |
954c1994 | 2215 | |
497711e7 GS |
2216 | =for hackers |
2217 | Found in file sv.h | |
2218 | ||
954c1994 GS |
2219 | =item SvIOK |
2220 | ||
2221 | Returns a boolean indicating whether the SV contains an integer. | |
2222 | ||
2223 | bool SvIOK(SV* sv) | |
2224 | ||
497711e7 GS |
2225 | =for hackers |
2226 | Found in file sv.h | |
2227 | ||
954c1994 GS |
2228 | =item SvIOKp |
2229 | ||
2230 | Returns a boolean indicating whether the SV contains an integer. Checks | |
2231 | the B<private> setting. Use C<SvIOK>. | |
2232 | ||
2233 | bool SvIOKp(SV* sv) | |
2234 | ||
497711e7 GS |
2235 | =for hackers |
2236 | Found in file sv.h | |
2237 | ||
e331fc52 JH |
2238 | =item SvIOK_notUV |
2239 | ||
f4758303 | 2240 | Returns a boolean indicating whether the SV contains a signed integer. |
e331fc52 JH |
2241 | |
2242 | void SvIOK_notUV(SV* sv) | |
2243 | ||
2244 | =for hackers | |
2245 | Found in file sv.h | |
2246 | ||
954c1994 GS |
2247 | =item SvIOK_off |
2248 | ||
2249 | Unsets the IV status of an SV. | |
2250 | ||
2251 | void SvIOK_off(SV* sv) | |
2252 | ||
497711e7 GS |
2253 | =for hackers |
2254 | Found in file sv.h | |
2255 | ||
954c1994 GS |
2256 | =item SvIOK_on |
2257 | ||
2258 | Tells an SV that it is an integer. | |
2259 | ||
2260 | void SvIOK_on(SV* sv) | |
2261 | ||
497711e7 GS |
2262 | =for hackers |
2263 | Found in file sv.h | |
2264 | ||
954c1994 GS |
2265 | =item SvIOK_only |
2266 | ||
2267 | Tells an SV that it is an integer and disables all other OK bits. | |
2268 | ||
2269 | void SvIOK_only(SV* sv) | |
2270 | ||
497711e7 GS |
2271 | =for hackers |
2272 | Found in file sv.h | |
2273 | ||
e331fc52 JH |
2274 | =item SvIOK_only_UV |
2275 | ||
2276 | Tells and SV that it is an unsigned integer and disables all other OK bits. | |
2277 | ||
2278 | void SvIOK_only_UV(SV* sv) | |
2279 | ||
2280 | =for hackers | |
2281 | Found in file sv.h | |
2282 | ||
2283 | =item SvIOK_UV | |
2284 | ||
2285 | Returns a boolean indicating whether the SV contains an unsigned integer. | |
2286 | ||
2287 | void SvIOK_UV(SV* sv) | |
2288 | ||
2289 | =for hackers | |
2290 | Found in file sv.h | |
2291 | ||
954c1994 GS |
2292 | =item SvIV |
2293 | ||
645c22ef DM |
2294 | Coerces the given SV to an integer and returns it. See C<SvIVx> for a |
2295 | version which guarantees to evaluate sv only once. | |
954c1994 GS |
2296 | |
2297 | IV SvIV(SV* sv) | |
2298 | ||
497711e7 GS |
2299 | =for hackers |
2300 | Found in file sv.h | |
2301 | ||
f4758303 | 2302 | =item SvIVX |
954c1994 | 2303 | |
f4758303 JP |
2304 | Returns the raw value in the SV's IV slot, without checks or conversions. |
2305 | Only use when you are sure SvIOK is true. See also C<SvIV()>. | |
954c1994 | 2306 | |
f4758303 | 2307 | IV SvIVX(SV* sv) |
954c1994 | 2308 | |
497711e7 GS |
2309 | =for hackers |
2310 | Found in file sv.h | |
2311 | ||
f4758303 | 2312 | =item SvIVx |
645c22ef | 2313 | |
f4758303 JP |
2314 | Coerces the given SV to an integer and returns it. Guarantees to evaluate |
2315 | sv only once. Use the more efficient C<SvIV> otherwise. | |
645c22ef | 2316 | |
f4758303 | 2317 | IV SvIVx(SV* sv) |
645c22ef DM |
2318 | |
2319 | =for hackers | |
2320 | Found in file sv.h | |
2321 | ||
954c1994 GS |
2322 | =item SvLEN |
2323 | ||
91e74348 JH |
2324 | Returns the size of the string buffer in the SV, not including any part |
2325 | attributable to C<SvOOK>. See C<SvCUR>. | |
954c1994 GS |
2326 | |
2327 | STRLEN SvLEN(SV* sv) | |
2328 | ||
497711e7 GS |
2329 | =for hackers |
2330 | Found in file sv.h | |
2331 | ||
954c1994 GS |
2332 | =item SvNIOK |
2333 | ||
2334 | Returns a boolean indicating whether the SV contains a number, integer or | |
2335 | double. | |
2336 | ||
2337 | bool SvNIOK(SV* sv) | |
2338 | ||
497711e7 GS |
2339 | =for hackers |
2340 | Found in file sv.h | |
2341 | ||
954c1994 GS |
2342 | =item SvNIOKp |
2343 | ||
2344 | Returns a boolean indicating whether the SV contains a number, integer or | |
2345 | double. Checks the B<private> setting. Use C<SvNIOK>. | |
2346 | ||
2347 | bool SvNIOKp(SV* sv) | |
2348 | ||
497711e7 GS |
2349 | =for hackers |
2350 | Found in file sv.h | |
2351 | ||
954c1994 GS |
2352 | =item SvNIOK_off |
2353 | ||
2354 | Unsets the NV/IV status of an SV. | |
2355 | ||
2356 | void SvNIOK_off(SV* sv) | |
2357 | ||
497711e7 GS |
2358 | =for hackers |
2359 | Found in file sv.h | |
2360 | ||
954c1994 GS |
2361 | =item SvNOK |
2362 | ||
2363 | Returns a boolean indicating whether the SV contains a double. | |
2364 | ||
2365 | bool SvNOK(SV* sv) | |
2366 | ||
497711e7 GS |
2367 | =for hackers |
2368 | Found in file sv.h | |
2369 | ||
954c1994 GS |
2370 | =item SvNOKp |
2371 | ||
2372 | Returns a boolean indicating whether the SV contains a double. Checks the | |
2373 | B<private> setting. Use C<SvNOK>. | |
2374 | ||
2375 | bool SvNOKp(SV* sv) | |
2376 | ||
497711e7 GS |
2377 | =for hackers |
2378 | Found in file sv.h | |
2379 | ||
954c1994 GS |
2380 | =item SvNOK_off |
2381 | ||
2382 | Unsets the NV status of an SV. | |
2383 | ||
2384 | void SvNOK_off(SV* sv) | |
2385 | ||
497711e7 GS |
2386 | =for hackers |
2387 | Found in file sv.h | |
2388 | ||
954c1994 GS |
2389 | =item SvNOK_on |
2390 | ||
2391 | Tells an SV that it is a double. | |
2392 | ||
2393 | void SvNOK_on(SV* sv) | |
2394 | ||
497711e7 GS |
2395 | =for hackers |
2396 | Found in file sv.h | |
2397 | ||
954c1994 GS |
2398 | =item SvNOK_only |
2399 | ||
2400 | Tells an SV that it is a double and disables all other OK bits. | |
2401 | ||
2402 | void SvNOK_only(SV* sv) | |
2403 | ||
497711e7 GS |
2404 | =for hackers |
2405 | Found in file sv.h | |
2406 | ||
954c1994 GS |
2407 | =item SvNV |
2408 | ||
645c22ef DM |
2409 | Coerce the given SV to a double and return it. See C<SvNVx> for a version |
2410 | which guarantees to evaluate sv only once. | |
954c1994 GS |
2411 | |
2412 | NV SvNV(SV* sv) | |
2413 | ||
497711e7 GS |
2414 | =for hackers |
2415 | Found in file sv.h | |
2416 | ||
f4758303 | 2417 | =item SvNVx |
645c22ef | 2418 | |
f4758303 JP |
2419 | Coerces the given SV to a double and returns it. Guarantees to evaluate |
2420 | sv only once. Use the more efficient C<SvNV> otherwise. | |
645c22ef | 2421 | |
f4758303 | 2422 | NV SvNVx(SV* sv) |
645c22ef DM |
2423 | |
2424 | =for hackers | |
2425 | Found in file sv.h | |
2426 | ||
f4758303 | 2427 | =item SvNVX |
954c1994 | 2428 | |
f4758303 JP |
2429 | Returns the raw value in the SV's NV slot, without checks or conversions. |
2430 | Only use when you are sure SvNOK is true. See also C<SvNV()>. | |
954c1994 | 2431 | |
f4758303 | 2432 | NV SvNVX(SV* sv) |
954c1994 | 2433 | |
497711e7 GS |
2434 | =for hackers |
2435 | Found in file sv.h | |
2436 | ||
954c1994 GS |
2437 | =item SvOK |
2438 | ||
2439 | Returns a boolean indicating whether the value is an SV. | |
2440 | ||
2441 | bool SvOK(SV* sv) | |
2442 | ||
497711e7 GS |
2443 | =for hackers |
2444 | Found in file sv.h | |
2445 | ||
954c1994 GS |
2446 | =item SvOOK |
2447 | ||
2448 | Returns a boolean indicating whether the SvIVX is a valid offset value for | |
2449 | the SvPVX. This hack is used internally to speed up removal of characters | |
2450 | from the beginning of a SvPV. When SvOOK is true, then the start of the | |
2451 | allocated string buffer is really (SvPVX - SvIVX). | |
2452 | ||
2453 | bool SvOOK(SV* sv) | |
2454 | ||
497711e7 GS |
2455 | =for hackers |
2456 | Found in file sv.h | |
2457 | ||
954c1994 GS |
2458 | =item SvPOK |
2459 | ||
2460 | Returns a boolean indicating whether the SV contains a character | |
2461 | string. | |
2462 | ||
2463 | bool SvPOK(SV* sv) | |
2464 | ||
497711e7 GS |
2465 | =for hackers |
2466 | Found in file sv.h | |
2467 | ||
954c1994 GS |
2468 | =item SvPOKp |
2469 | ||
2470 | Returns a boolean indicating whether the SV contains a character string. | |
2471 | Checks the B<private> setting. Use C<SvPOK>. | |
2472 | ||
2473 | bool SvPOKp(SV* sv) | |
2474 | ||
497711e7 GS |
2475 | =for hackers |
2476 | Found in file sv.h | |
2477 | ||
954c1994 GS |
2478 | =item SvPOK_off |
2479 | ||
2480 | Unsets the PV status of an SV. | |
2481 | ||
2482 | void SvPOK_off(SV* sv) | |
2483 | ||
497711e7 GS |
2484 | =for hackers |
2485 | Found in file sv.h | |
2486 | ||
954c1994 GS |
2487 | =item SvPOK_on |
2488 | ||
2489 | Tells an SV that it is a string. | |
2490 | ||
2491 | void SvPOK_on(SV* sv) | |
2492 | ||
497711e7 GS |
2493 | =for hackers |
2494 | Found in file sv.h | |
2495 | ||
954c1994 GS |
2496 | =item SvPOK_only |
2497 | ||
2498 | Tells an SV that it is a string and disables all other OK bits. | |
d5ce4a7c | 2499 | Will also turn off the UTF8 status. |
954c1994 GS |
2500 | |
2501 | void SvPOK_only(SV* sv) | |
2502 | ||
497711e7 GS |
2503 | =for hackers |
2504 | Found in file sv.h | |
2505 | ||
914184e1 JH |
2506 | =item SvPOK_only_UTF8 |
2507 | ||
d5ce4a7c GA |
2508 | Tells an SV that it is a string and disables all other OK bits, |
2509 | and leaves the UTF8 status as it was. | |
f1a1024e | 2510 | |
914184e1 JH |
2511 | void SvPOK_only_UTF8(SV* sv) |
2512 | ||
2513 | =for hackers | |
2514 | Found in file sv.h | |
2515 | ||
954c1994 GS |
2516 | =item SvPV |
2517 | ||
2518 | Returns a pointer to the string in the SV, or a stringified form of the SV | |
645c22ef DM |
2519 | if the SV does not contain a string. Handles 'get' magic. See also |
2520 | C<SvPVx> for a version which guarantees to evaluate sv only once. | |
954c1994 GS |
2521 | |
2522 | char* SvPV(SV* sv, STRLEN len) | |
2523 | ||
497711e7 GS |
2524 | =for hackers |
2525 | Found in file sv.h | |
2526 | ||
645c22ef DM |
2527 | =item SvPVbyte |
2528 | ||
2529 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
2530 | ||
2531 | char* SvPVbyte(SV* sv, STRLEN len) | |
2532 | ||
2533 | =for hackers | |
2534 | Found in file sv.h | |
2535 | ||
2536 | =item SvPVbytex | |
2537 | ||
2538 | Like C<SvPV>, but converts sv to byte representation first if necessary. | |
d1be9408 | 2539 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte> |
645c22ef DM |
2540 | otherwise. |
2541 | ||
2542 | ||
2543 | char* SvPVbytex(SV* sv, STRLEN len) | |
2544 | ||
2545 | =for hackers | |
2546 | Found in file sv.h | |
2547 | ||
2548 | =item SvPVbytex_force | |
2549 | ||
2550 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
d1be9408 | 2551 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force> |
645c22ef DM |
2552 | otherwise. |
2553 | ||
2554 | char* SvPVbytex_force(SV* sv, STRLEN len) | |
2555 | ||
2556 | =for hackers | |
2557 | Found in file sv.h | |
2558 | ||
2559 | =item SvPVbyte_force | |
2560 | ||
2561 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. | |
2562 | ||
2563 | char* SvPVbyte_force(SV* sv, STRLEN len) | |
2564 | ||
2565 | =for hackers | |
2566 | Found in file sv.h | |
2567 | ||
2568 | =item SvPVbyte_nolen | |
2569 | ||
2570 | Like C<SvPV_nolen>, but converts sv to byte representation first if necessary. | |
2571 | ||
1fdc5aa6 | 2572 | char* SvPVbyte_nolen(SV* sv) |
645c22ef DM |
2573 | |
2574 | =for hackers | |
2575 | Found in file sv.h | |
2576 | ||
2577 | =item SvPVutf8 | |
2578 | ||
1fdc5aa6 | 2579 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
645c22ef DM |
2580 | |
2581 | char* SvPVutf8(SV* sv, STRLEN len) | |
2582 | ||
2583 | =for hackers | |
2584 | Found in file sv.h | |
2585 | ||
2586 | =item SvPVutf8x | |
2587 | ||
1fdc5aa6 | 2588 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
d1be9408 | 2589 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8> |
645c22ef DM |
2590 | otherwise. |
2591 | ||
2592 | char* SvPVutf8x(SV* sv, STRLEN len) | |
2593 | ||
2594 | =for hackers | |
2595 | Found in file sv.h | |
2596 | ||
2597 | =item SvPVutf8x_force | |
2598 | ||
1fdc5aa6 | 2599 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
d1be9408 | 2600 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force> |
645c22ef DM |
2601 | otherwise. |
2602 | ||
2603 | char* SvPVutf8x_force(SV* sv, STRLEN len) | |
2604 | ||
2605 | =for hackers | |
2606 | Found in file sv.h | |
2607 | ||
2608 | =item SvPVutf8_force | |
2609 | ||
1fdc5aa6 | 2610 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
645c22ef DM |
2611 | |
2612 | char* SvPVutf8_force(SV* sv, STRLEN len) | |
2613 | ||
2614 | =for hackers | |
2615 | Found in file sv.h | |
2616 | ||
2617 | =item SvPVutf8_nolen | |
2618 | ||
1fdc5aa6 | 2619 | Like C<SvPV_nolen>, but converts sv to utf8 first if necessary. |
645c22ef | 2620 | |
1fdc5aa6 | 2621 | char* SvPVutf8_nolen(SV* sv) |
645c22ef DM |
2622 | |
2623 | =for hackers | |
2624 | Found in file sv.h | |
2625 | ||
9f4817db | 2626 | =item SvPVX |
645c22ef | 2627 | |
9f4817db JH |
2628 | Returns a pointer to the physical string in the SV. The SV must contain a |
2629 | string. | |
645c22ef | 2630 | |
9f4817db | 2631 | char* SvPVX(SV* sv) |
645c22ef DM |
2632 | |
2633 | =for hackers | |
2634 | Found in file sv.h | |
2635 | ||
9f4817db | 2636 | =item SvPVx |
954c1994 | 2637 | |
9f4817db | 2638 | A version of C<SvPV> which guarantees to evaluate sv only once. |
954c1994 | 2639 | |
9f4817db | 2640 | char* SvPVx(SV* sv, STRLEN len) |
954c1994 | 2641 | |
497711e7 GS |
2642 | =for hackers |
2643 | Found in file sv.h | |
2644 | ||
954c1994 GS |
2645 | =item SvPV_force |
2646 | ||
2647 | Like <SvPV> but will force the SV into becoming a string (SvPOK). You want | |
2648 | force if you are going to update the SvPVX directly. | |
2649 | ||
2650 | char* SvPV_force(SV* sv, STRLEN len) | |
2651 | ||
497711e7 GS |
2652 | =for hackers |
2653 | Found in file sv.h | |
2654 | ||
645c22ef DM |
2655 | =item SvPV_force_nomg |
2656 | ||
2657 | Like <SvPV> but will force the SV into becoming a string (SvPOK). You want | |
2658 | force if you are going to update the SvPVX directly. Doesn't process magic. | |
2659 | ||
2660 | char* SvPV_force_nomg(SV* sv, STRLEN len) | |
2661 | ||
2662 | =for hackers | |
2663 | Found in file sv.h | |
2664 | ||
954c1994 GS |
2665 | =item SvPV_nolen |
2666 | ||
2667 | Returns a pointer to the string in the SV, or a stringified form of the SV | |
2668 | if the SV does not contain a string. Handles 'get' magic. | |
2669 | ||
2670 | char* SvPV_nolen(SV* sv) | |
2671 | ||
497711e7 GS |
2672 | =for hackers |
2673 | Found in file sv.h | |
2674 | ||
954c1994 GS |
2675 | =item SvREFCNT |
2676 | ||
2677 | Returns the value of the object's reference count. | |
2678 | ||
2679 | U32 SvREFCNT(SV* sv) | |
2680 | ||
497711e7 GS |
2681 | =for hackers |
2682 | Found in file sv.h | |
2683 | ||
954c1994 GS |
2684 | =item SvREFCNT_dec |
2685 | ||
2686 | Decrements the reference count of the given SV. | |
2687 | ||
2688 | void SvREFCNT_dec(SV* sv) | |
2689 | ||
497711e7 GS |
2690 | =for hackers |
2691 | Found in file sv.h | |
2692 | ||
954c1994 GS |
2693 | =item SvREFCNT_inc |
2694 | ||
2695 | Increments the reference count of the given SV. | |
2696 | ||
2697 | SV* SvREFCNT_inc(SV* sv) | |
2698 | ||
497711e7 GS |
2699 | =for hackers |
2700 | Found in file sv.h | |
2701 | ||
954c1994 GS |
2702 | =item SvROK |
2703 | ||
2704 | Tests if the SV is an RV. | |
2705 | ||
2706 | bool SvROK(SV* sv) | |
2707 | ||
497711e7 GS |
2708 | =for hackers |
2709 | Found in file sv.h | |
2710 | ||
954c1994 GS |
2711 | =item SvROK_off |
2712 | ||
2713 | Unsets the RV status of an SV. | |
2714 | ||
2715 | void SvROK_off(SV* sv) | |
2716 | ||
497711e7 GS |
2717 | =for hackers |
2718 | Found in file sv.h | |
2719 | ||
954c1994 GS |
2720 | =item SvROK_on |
2721 | ||
2722 | Tells an SV that it is an RV. | |
2723 | ||
2724 | void SvROK_on(SV* sv) | |
2725 | ||
497711e7 GS |
2726 | =for hackers |
2727 | Found in file sv.h | |
2728 | ||
954c1994 GS |
2729 | =item SvRV |
2730 | ||
2731 | Dereferences an RV to return the SV. | |
2732 | ||
2733 | SV* SvRV(SV* sv) | |
2734 | ||
497711e7 GS |
2735 | =for hackers |
2736 | Found in file sv.h | |
2737 | ||
954c1994 GS |
2738 | =item SvSETMAGIC |
2739 | ||
2740 | Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its | |
2741 | argument more than once. | |
2742 | ||
2743 | void SvSETMAGIC(SV* sv) | |
2744 | ||
497711e7 GS |
2745 | =for hackers |
2746 | Found in file sv.h | |
2747 | ||
645c22ef DM |
2748 | =item SvSetMagicSV |
2749 | ||
2750 | Like C<SvSetSV>, but does any set magic required afterwards. | |
2751 | ||
2752 | void SvSetMagicSV(SV* dsb, SV* ssv) | |
2753 | ||
2754 | =for hackers | |
2755 | Found in file sv.h | |
2756 | ||
2757 | =item SvSetMagicSV_nosteal | |
2758 | ||
2759 | Like C<SvSetMagicSV>, but does any set magic required afterwards. | |
2760 | ||
2761 | void SvSetMagicSV_nosteal(SV* dsv, SV* ssv) | |
2762 | ||
2763 | =for hackers | |
2764 | Found in file sv.h | |
2765 | ||
954c1994 GS |
2766 | =item SvSetSV |
2767 | ||
2768 | Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments | |
2769 | more than once. | |
2770 | ||
2771 | void SvSetSV(SV* dsb, SV* ssv) | |
2772 | ||
497711e7 GS |
2773 | =for hackers |
2774 | Found in file sv.h | |
2775 | ||
954c1994 GS |
2776 | =item SvSetSV_nosteal |
2777 | ||
2778 | Calls a non-destructive version of C<sv_setsv> if dsv is not the same as | |
2779 | ssv. May evaluate arguments more than once. | |
2780 | ||
2781 | void SvSetSV_nosteal(SV* dsv, SV* ssv) | |
2782 | ||
497711e7 GS |
2783 | =for hackers |
2784 | Found in file sv.h | |
2785 | ||
954c1994 GS |
2786 | =item SvSTASH |
2787 | ||
2788 | Returns the stash of the SV. | |
2789 | ||
2790 | HV* SvSTASH(SV* sv) | |
2791 | ||
497711e7 GS |
2792 | =for hackers |
2793 | Found in file sv.h | |
2794 | ||
954c1994 GS |
2795 | =item SvTAINT |
2796 | ||
2797 | Taints an SV if tainting is enabled | |
2798 | ||
2799 | void SvTAINT(SV* sv) | |
2800 | ||
497711e7 GS |
2801 | =for hackers |
2802 | Found in file sv.h | |
2803 | ||
954c1994 GS |
2804 | =item SvTAINTED |
2805 | ||
2806 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if | |
2807 | not. | |
2808 | ||
2809 | bool SvTAINTED(SV* sv) | |
2810 | ||
497711e7 GS |
2811 | =for hackers |
2812 | Found in file sv.h | |
2813 | ||
954c1994 GS |
2814 | =item SvTAINTED_off |
2815 | ||
2816 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits | |
2817 | some of Perl's fundamental security features. XS module authors should not | |
2818 | use this function unless they fully understand all the implications of | |
2819 | unconditionally untainting the value. Untainting should be done in the | |
2820 | standard perl fashion, via a carefully crafted regexp, rather than directly | |
2821 | untainting variables. | |
2822 | ||
2823 | void SvTAINTED_off(SV* sv) | |
2824 | ||
497711e7 GS |
2825 | =for hackers |
2826 | Found in file sv.h | |
2827 | ||
954c1994 GS |
2828 | =item SvTAINTED_on |
2829 | ||
2830 | Marks an SV as tainted. | |
2831 | ||
2832 | void SvTAINTED_on(SV* sv) | |
2833 | ||
497711e7 GS |
2834 | =for hackers |
2835 | Found in file sv.h | |
2836 | ||
954c1994 GS |
2837 | =item SvTRUE |
2838 | ||
2839 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
2840 | false, defined or undefined. Does not handle 'get' magic. | |
2841 | ||
2842 | bool SvTRUE(SV* sv) | |
2843 | ||
497711e7 GS |
2844 | =for hackers |
2845 | Found in file sv.h | |
2846 | ||
9f4817db | 2847 | =item svtype |
e37d999d | 2848 | |
9f4817db JH |
2849 | An enum of flags for Perl types. These are found in the file B<sv.h> |
2850 | in the C<svtype> enum. Test these flags with the C<SvTYPE> macro. | |
34f7a5fe | 2851 | |
497711e7 GS |
2852 | =for hackers |
2853 | Found in file sv.h | |
2854 | ||
9f4817db | 2855 | =item SvTYPE |
af3c7592 | 2856 | |
9f4817db JH |
2857 | Returns the type of the SV. See C<svtype>. |
2858 | ||
2859 | svtype SvTYPE(SV* sv) | |
954c1994 | 2860 | |
497711e7 GS |
2861 | =for hackers |
2862 | Found in file sv.h | |
2863 | ||
954c1994 GS |
2864 | =item SVt_IV |
2865 | ||
2866 | Integer type flag for scalars. See C<svtype>. | |
2867 | ||
497711e7 GS |
2868 | =for hackers |
2869 | Found in file sv.h | |
2870 | ||
954c1994 GS |
2871 | =item SVt_NV |
2872 | ||
2873 | Double type flag for scalars. See C<svtype>. | |
2874 | ||
497711e7 GS |
2875 | =for hackers |
2876 | Found in file sv.h | |
2877 | ||
954c1994 GS |
2878 | =item SVt_PV |
2879 | ||
2880 | Pointer type flag for scalars. See C<svtype>. | |
2881 | ||
497711e7 GS |
2882 | =for hackers |
2883 | Found in file sv.h | |
2884 | ||
954c1994 GS |
2885 | =item SVt_PVAV |
2886 | ||
2887 | Type flag for arrays. See C<svtype>. | |
2888 | ||
497711e7 GS |
2889 | =for hackers |
2890 | Found in file sv.h | |
2891 | ||
954c1994 GS |
2892 | =item SVt_PVCV |
2893 | ||
2894 | Type flag for code refs. See C<svtype>. | |
2895 | ||
497711e7 GS |
2896 | =for hackers |
2897 | Found in file sv.h | |
2898 | ||
954c1994 GS |
2899 | =item SVt_PVHV |
2900 | ||
2901 | Type flag for hashes. See C<svtype>. | |
2902 | ||
497711e7 GS |
2903 | =for hackers |
2904 | Found in file sv.h | |
2905 | ||
954c1994 GS |
2906 | =item SVt_PVMG |
2907 | ||
2908 | Type flag for blessed scalars. See C<svtype>. | |
2909 | ||
497711e7 GS |
2910 | =for hackers |
2911 | Found in file sv.h | |
2912 | ||
a8586c98 JH |
2913 | =item SvUOK |
2914 | ||
2915 | Returns a boolean indicating whether the SV contains an unsigned integer. | |
2916 | ||
2917 | void SvUOK(SV* sv) | |
2918 | ||
2919 | =for hackers | |
2920 | Found in file sv.h | |
2921 | ||
954c1994 GS |
2922 | =item SvUPGRADE |
2923 | ||
2924 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
2925 | perform the upgrade if necessary. See C<svtype>. | |
2926 | ||
2927 | void SvUPGRADE(SV* sv, svtype type) | |
2928 | ||
497711e7 GS |
2929 | =for hackers |
2930 | Found in file sv.h | |
2931 | ||
914184e1 JH |
2932 | =item SvUTF8 |
2933 | ||
2934 | Returns a boolean indicating whether the SV contains UTF-8 encoded data. | |
2935 | ||
2936 | void SvUTF8(SV* sv) | |
2937 | ||
2938 | =for hackers | |
2939 | Found in file sv.h | |
2940 | ||
2941 | =item SvUTF8_off | |
2942 | ||
2943 | Unsets the UTF8 status of an SV. | |
2944 | ||
2945 | void SvUTF8_off(SV *sv) | |
2946 | ||
2947 | =for hackers | |
2948 | Found in file sv.h | |
2949 | ||
2950 | =item SvUTF8_on | |
2951 | ||
d5ce4a7c GA |
2952 | Turn on the UTF8 status of an SV (the data is not changed, just the flag). |
2953 | Do not use frivolously. | |
914184e1 JH |
2954 | |
2955 | void SvUTF8_on(SV *sv) | |
2956 | ||
2957 | =for hackers | |
2958 | Found in file sv.h | |
2959 | ||
954c1994 GS |
2960 | =item SvUV |
2961 | ||
645c22ef DM |
2962 | Coerces the given SV to an unsigned integer and returns it. See C<SvUVx> |
2963 | for a version which guarantees to evaluate sv only once. | |
954c1994 GS |
2964 | |
2965 | UV SvUV(SV* sv) | |
2966 | ||
497711e7 GS |
2967 | =for hackers |
2968 | Found in file sv.h | |
2969 | ||
2a5a0c38 | 2970 | =item SvUVx |
954c1994 | 2971 | |
2a5a0c38 JH |
2972 | Coerces the given SV to an unsigned integer and returns it. Guarantees to |
2973 | evaluate sv only once. Use the more efficient C<SvUV> otherwise. | |
954c1994 | 2974 | |
2a5a0c38 | 2975 | UV SvUVx(SV* sv) |
954c1994 | 2976 | |
497711e7 GS |
2977 | =for hackers |
2978 | Found in file sv.h | |
2979 | ||
2a5a0c38 | 2980 | =item SvUVX |
645c22ef | 2981 | |
2a5a0c38 JH |
2982 | Returns the raw value in the SV's UV slot, without checks or conversions. |
2983 | Only use when you are sure SvIOK is true. See also C<SvUV()>. | |
645c22ef | 2984 | |
2a5a0c38 | 2985 | UV SvUVX(SV* sv) |
645c22ef DM |
2986 | |
2987 | =for hackers | |
2988 | Found in file sv.h | |
2989 | ||
2990 | =item sv_2bool | |
2991 | ||
2992 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 2993 | sv_true() or its macro equivalent. |
645c22ef DM |
2994 | |
2995 | bool sv_2bool(SV* sv) | |
2996 | ||
2997 | =for hackers | |
2998 | Found in file sv.c | |
2999 | ||
3000 | =item sv_2cv | |
3001 | ||
3002 | Using various gambits, try to get a CV from an SV; in addition, try if | |
3003 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
3004 | ||
3005 | CV* sv_2cv(SV* sv, HV** st, GV** gvp, I32 lref) | |
3006 | ||
3007 | =for hackers | |
3008 | Found in file sv.c | |
3009 | ||
3010 | =item sv_2io | |
3011 | ||
3012 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
3013 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
3014 | named after the PV if we're a string. | |
3015 | ||
3016 | IO* sv_2io(SV* sv) | |
3017 | ||
3018 | =for hackers | |
3019 | Found in file sv.c | |
3020 | ||
3021 | =item sv_2iv | |
3022 | ||
3023 | Return the integer value of an SV, doing any necessary string conversion, | |
3024 | magic etc. Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
3025 | ||
3026 | IV sv_2iv(SV* sv) | |
3027 | ||
3028 | =for hackers | |
3029 | Found in file sv.c | |
3030 | ||
954c1994 GS |
3031 | =item sv_2mortal |
3032 | ||
793edb8a JH |
3033 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
3034 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
3035 | statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>. | |
954c1994 GS |
3036 | |
3037 | SV* sv_2mortal(SV* sv) | |
3038 | ||
497711e7 GS |
3039 | =for hackers |
3040 | Found in file sv.c | |
3041 | ||
645c22ef DM |
3042 | =item sv_2nv |
3043 | ||
3044 | Return the num value of an SV, doing any necessary string or integer | |
3045 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3046 | macros. | |
3047 | ||
3048 | NV sv_2nv(SV* sv) | |
3049 | ||
3050 | =for hackers | |
3051 | Found in file sv.c | |
3052 | ||
451be7b1 DM |
3053 | =item sv_2pvbyte |
3054 | ||
3055 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
3056 | to its length. May cause the SV to be downgraded from UTF8 as a | |
3057 | side-effect. | |
3058 | ||
3059 | Usually accessed via the C<SvPVbyte> macro. | |
3060 | ||
3061 | char* sv_2pvbyte(SV* sv, STRLEN* lp) | |
3062 | ||
3063 | =for hackers | |
3064 | Found in file sv.c | |
3065 | ||
645c22ef DM |
3066 | =item sv_2pvbyte_nolen |
3067 | ||
3068 | Return a pointer to the byte-encoded representation of the SV. | |
3069 | May cause the SV to be downgraded from UTF8 as a side-effect. | |
3070 | ||
3071 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3072 | ||
3073 | char* sv_2pvbyte_nolen(SV* sv) | |
3074 | ||
3075 | =for hackers | |
3076 | Found in file sv.c | |
3077 | ||
451be7b1 DM |
3078 | =item sv_2pvutf8 |
3079 | ||
3080 | Return a pointer to the UTF8-encoded representation of the SV, and set *lp | |
3081 | to its length. May cause the SV to be upgraded to UTF8 as a side-effect. | |
3082 | ||
3083 | Usually accessed via the C<SvPVutf8> macro. | |
3084 | ||
3085 | char* sv_2pvutf8(SV* sv, STRLEN* lp) | |
3086 | ||
3087 | =for hackers | |
3088 | Found in file sv.c | |
3089 | ||
645c22ef DM |
3090 | =item sv_2pvutf8_nolen |
3091 | ||
3092 | Return a pointer to the UTF8-encoded representation of the SV. | |
3093 | May cause the SV to be upgraded to UTF8 as a side-effect. | |
3094 | ||
3095 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3096 | ||
3097 | char* sv_2pvutf8_nolen(SV* sv) | |
3098 | ||
3099 | =for hackers | |
3100 | Found in file sv.c | |
3101 | ||
3102 | =item sv_2pv_flags | |
3103 | ||
ff276b08 | 3104 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3105 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3106 | if necessary. | |
3107 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3108 | usually end up here too. | |
3109 | ||
3110 | char* sv_2pv_flags(SV* sv, STRLEN* lp, I32 flags) | |
3111 | ||
3112 | =for hackers | |
3113 | Found in file sv.c | |
3114 | ||
3115 | =item sv_2pv_nolen | |
3116 | ||
3117 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3118 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3119 | char* sv_2pv_nolen(SV* sv) | |
3120 | ||
3121 | =for hackers | |
3122 | Found in file sv.c | |
3123 | ||
3124 | =item sv_2uv | |
3125 | ||
3126 | Return the unsigned integer value of an SV, doing any necessary string | |
3127 | conversion, magic etc. Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> | |
3128 | macros. | |
3129 | ||
3130 | UV sv_2uv(SV* sv) | |
3131 | ||
3132 | =for hackers | |
3133 | Found in file sv.c | |
3134 | ||
3135 | =item sv_backoff | |
3136 | ||
3137 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
3138 | wrapper instead. | |
3139 | ||
3140 | int sv_backoff(SV* sv) | |
3141 | ||
3142 | =for hackers | |
3143 | Found in file sv.c | |
3144 | ||
954c1994 GS |
3145 | =item sv_bless |
3146 | ||
3147 | Blesses an SV into a specified package. The SV must be an RV. The package | |
3148 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
3149 | of the SV is unaffected. | |
3150 | ||
3151 | SV* sv_bless(SV* sv, HV* stash) | |
3152 | ||
497711e7 GS |
3153 | =for hackers |
3154 | Found in file sv.c | |
3155 | ||
954c1994 GS |
3156 | =item sv_catpv |
3157 | ||
3158 | Concatenates the string onto the end of the string which is in the SV. | |
d5ce4a7c GA |
3159 | If the SV has the UTF8 status set, then the bytes appended should be |
3160 | valid UTF8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 GS |
3161 | |
3162 | void sv_catpv(SV* sv, const char* ptr) | |
3163 | ||
497711e7 GS |
3164 | =for hackers |
3165 | Found in file sv.c | |
3166 | ||
954c1994 GS |
3167 | =item sv_catpvf |
3168 | ||
d5ce4a7c GA |
3169 | Processes its arguments like C<sprintf> and appends the formatted |
3170 | output to an SV. If the appended data contains "wide" characters | |
3171 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
3172 | and characters >255 formatted with %c), the original SV might get | |
3173 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. | |
3174 | C<SvSETMAGIC()> must typically be called after calling this function | |
3175 | to handle 'set' magic. | |
954c1994 GS |
3176 | |
3177 | void sv_catpvf(SV* sv, const char* pat, ...) | |
3178 | ||
497711e7 GS |
3179 | =for hackers |
3180 | Found in file sv.c | |
3181 | ||
954c1994 GS |
3182 | =item sv_catpvf_mg |
3183 | ||
3184 | Like C<sv_catpvf>, but also handles 'set' magic. | |
3185 | ||
3186 | void sv_catpvf_mg(SV *sv, const char* pat, ...) | |
3187 | ||
497711e7 GS |
3188 | =for hackers |
3189 | Found in file sv.c | |
3190 | ||
954c1994 GS |
3191 | =item sv_catpvn |
3192 | ||
3193 | Concatenates the string onto the end of the string which is in the SV. The | |
d5ce4a7c GA |
3194 | C<len> indicates number of bytes to copy. If the SV has the UTF8 |
3195 | status set, then the bytes appended should be valid UTF8. | |
3196 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. | |
954c1994 GS |
3197 | |
3198 | void sv_catpvn(SV* sv, const char* ptr, STRLEN len) | |
3199 | ||
497711e7 GS |
3200 | =for hackers |
3201 | Found in file sv.c | |
3202 | ||
8d6d96c1 HS |
3203 | =item sv_catpvn_flags |
3204 | ||
3205 | Concatenates the string onto the end of the string which is in the SV. The | |
3206 | C<len> indicates number of bytes to copy. If the SV has the UTF8 | |
3207 | status set, then the bytes appended should be valid UTF8. | |
3208 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if | |
3209 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
3210 | in terms of this function. | |
3211 | ||
3212 | void sv_catpvn_flags(SV* sv, const char* ptr, STRLEN len, I32 flags) | |
3213 | ||
3214 | =for hackers | |
3215 | Found in file sv.c | |
3216 | ||
954c1994 GS |
3217 | =item sv_catpvn_mg |
3218 | ||
3219 | Like C<sv_catpvn>, but also handles 'set' magic. | |
3220 | ||
3221 | void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len) | |
3222 | ||
497711e7 GS |
3223 | =for hackers |
3224 | Found in file sv.c | |
3225 | ||
954c1994 GS |
3226 | =item sv_catpv_mg |
3227 | ||
3228 | Like C<sv_catpv>, but also handles 'set' magic. | |
3229 | ||
3230 | void sv_catpv_mg(SV *sv, const char *ptr) | |
3231 | ||
497711e7 GS |
3232 | =for hackers |
3233 | Found in file sv.c | |
3234 | ||
954c1994 GS |
3235 | =item sv_catsv |
3236 | ||
1aa99e6b IH |
3237 | Concatenates the string from SV C<ssv> onto the end of the string in |
3238 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
3239 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 GS |
3240 | |
3241 | void sv_catsv(SV* dsv, SV* ssv) | |
3242 | ||
497711e7 GS |
3243 | =for hackers |
3244 | Found in file sv.c | |
3245 | ||
8d6d96c1 HS |
3246 | =item sv_catsv_flags |
3247 | ||
3248 | Concatenates the string from SV C<ssv> onto the end of the string in | |
3249 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
3250 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
3251 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
3252 | ||
3253 | void sv_catsv_flags(SV* dsv, SV* ssv, I32 flags) | |
3254 | ||
3255 | =for hackers | |
3256 | Found in file sv.c | |
3257 | ||
954c1994 GS |
3258 | =item sv_catsv_mg |
3259 | ||
3260 | Like C<sv_catsv>, but also handles 'set' magic. | |
3261 | ||
3262 | void sv_catsv_mg(SV *dstr, SV *sstr) | |
3263 | ||
497711e7 GS |
3264 | =for hackers |
3265 | Found in file sv.c | |
3266 | ||
954c1994 GS |
3267 | =item sv_chop |
3268 | ||
1c846c1f | 3269 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
3270 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
3271 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 3272 | string. Uses the "OOK hack". |
954c1994 GS |
3273 | |
3274 | void sv_chop(SV* sv, char* ptr) | |
3275 | ||
497711e7 GS |
3276 | =for hackers |
3277 | Found in file sv.c | |
3278 | ||
c461cf8f JH |
3279 | =item sv_clear |
3280 | ||
645c22ef DM |
3281 | Clear an SV: call any destructors, free up any memory used by the body, |
3282 | and free the body itself. The SV's head is I<not> freed, although | |
3283 | its type is set to all 1's so that it won't inadvertently be assumed | |
3284 | to be live during global destruction etc. | |
3285 | This function should only be called when REFCNT is zero. Most of the time | |
3286 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
3287 | instead. | |
c461cf8f JH |
3288 | |
3289 | void sv_clear(SV* sv) | |
3290 | ||
3291 | =for hackers | |
3292 | Found in file sv.c | |
3293 | ||
954c1994 GS |
3294 | =item sv_cmp |
3295 | ||
3296 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
3297 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
3298 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
3299 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
3300 | |
3301 | I32 sv_cmp(SV* sv1, SV* sv2) | |
3302 | ||
497711e7 GS |
3303 | =for hackers |
3304 | Found in file sv.c | |
3305 | ||
c461cf8f JH |
3306 | =item sv_cmp_locale |
3307 | ||
645c22ef DM |
3308 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
3309 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
3310 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
3311 | |
3312 | I32 sv_cmp_locale(SV* sv1, SV* sv2) | |
3313 | ||
3314 | =for hackers | |
3315 | Found in file sv.c | |
3316 | ||
645c22ef DM |
3317 | =item sv_collxfrm |
3318 | ||
3319 | Add Collate Transform magic to an SV if it doesn't already have it. | |
3320 | ||
3321 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
3322 | scalar data of the variable, but transformed to such a format that a normal | |
3323 | memory comparison can be used to compare the data according to the locale | |
3324 | settings. | |
3325 | ||
3326 | char* sv_collxfrm(SV* sv, STRLEN* nxp) | |
3327 | ||
3328 | =for hackers | |
3329 | Found in file sv.c | |
3330 | ||
954c1994 GS |
3331 | =item sv_dec |
3332 | ||
645c22ef DM |
3333 | Auto-decrement of the value in the SV, doing string to numeric conversion |
3334 | if necessary. Handles 'get' magic. | |
954c1994 GS |
3335 | |
3336 | void sv_dec(SV* sv) | |
3337 | ||
497711e7 GS |
3338 | =for hackers |
3339 | Found in file sv.c | |
3340 | ||
954c1994 GS |
3341 | =item sv_derived_from |
3342 | ||
3343 | Returns a boolean indicating whether the SV is derived from the specified | |
3344 | class. This is the function that implements C<UNIVERSAL::isa>. It works | |
3345 | for class names as well as for objects. | |
3346 | ||
3347 | bool sv_derived_from(SV* sv, const char* name) | |
3348 | ||
497711e7 GS |
3349 | =for hackers |
3350 | Found in file universal.c | |
3351 | ||
954c1994 GS |
3352 | =item sv_eq |
3353 | ||
3354 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
3355 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
3356 | coerce its args to strings if necessary. | |
954c1994 GS |
3357 | |
3358 | I32 sv_eq(SV* sv1, SV* sv2) | |
3359 | ||
497711e7 GS |
3360 | =for hackers |
3361 | Found in file sv.c | |
3362 | ||
645c22ef DM |
3363 | =item sv_force_normal |
3364 | ||
3365 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
3366 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
3367 | an xpvmg. See also C<sv_force_normal_flags>. | |
3368 | ||
3369 | void sv_force_normal(SV *sv) | |
3370 | ||
3371 | =for hackers | |
3372 | Found in file sv.c | |
3373 | ||
3374 | =item sv_force_normal_flags | |
3375 | ||
3376 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
3377 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
3378 | an xpvmg. The C<flags> parameter gets passed to C<sv_unref_flags()> | |
3379 | when unrefing. C<sv_force_normal> calls this function with flags set to 0. | |
3380 | ||
3381 | void sv_force_normal_flags(SV *sv, U32 flags) | |
3382 | ||
3383 | =for hackers | |
3384 | Found in file sv.c | |
3385 | ||
c461cf8f JH |
3386 | =item sv_free |
3387 | ||
645c22ef DM |
3388 | Decrement an SV's reference count, and if it drops to zero, call |
3389 | C<sv_clear> to invoke destructors and free up any memory used by | |
3390 | the body; finally, deallocate the SV's head itself. | |
3391 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
3392 | |
3393 | void sv_free(SV* sv) | |
3394 | ||
3395 | =for hackers | |
3396 | Found in file sv.c | |
3397 | ||
3398 | =item sv_gets | |
3399 | ||
3400 | Get a line from the filehandle and store it into the SV, optionally | |
3401 | appending to the currently-stored string. | |
3402 | ||
3403 | char* sv_gets(SV* sv, PerlIO* fp, I32 append) | |
3404 | ||
3405 | =for hackers | |
3406 | Found in file sv.c | |
3407 | ||
954c1994 GS |
3408 | =item sv_grow |
3409 | ||
645c22ef DM |
3410 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
3411 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
3412 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
3413 | |
3414 | char* sv_grow(SV* sv, STRLEN newlen) | |
3415 | ||
497711e7 GS |
3416 | =for hackers |
3417 | Found in file sv.c | |
3418 | ||
954c1994 GS |
3419 | =item sv_inc |
3420 | ||
645c22ef DM |
3421 | Auto-increment of the value in the SV, doing string to numeric conversion |
3422 | if necessary. Handles 'get' magic. | |
954c1994 GS |
3423 | |
3424 | void sv_inc(SV* sv) | |
3425 | ||
497711e7 GS |
3426 | =for hackers |
3427 | Found in file sv.c | |
3428 | ||
954c1994 GS |
3429 | =item sv_insert |
3430 | ||
3431 | Inserts a string at the specified offset/length within the SV. Similar to | |
3432 | the Perl substr() function. | |
3433 | ||
3434 | void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, char* little, STRLEN littlelen) | |
3435 | ||
497711e7 GS |
3436 | =for hackers |
3437 | Found in file sv.c | |
3438 | ||
954c1994 GS |
3439 | =item sv_isa |
3440 | ||
3441 | Returns a boolean indicating whether the SV is blessed into the specified | |
3442 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
3443 | an inheritance relationship. | |
3444 | ||
3445 | int sv_isa(SV* sv, const char* name) | |
3446 | ||
497711e7 GS |
3447 | =for hackers |
3448 | Found in file sv.c | |
3449 | ||
954c1994 GS |
3450 | =item sv_isobject |
3451 | ||
3452 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
3453 | object. If the SV is not an RV, or if the object is not blessed, then this | |
3454 | will return false. | |
3455 | ||
3456 | int sv_isobject(SV* sv) | |
3457 | ||
497711e7 GS |
3458 | =for hackers |
3459 | Found in file sv.c | |
3460 | ||
645c22ef DM |
3461 | =item sv_iv |
3462 | ||
3463 | A private implementation of the C<SvIVx> macro for compilers which can't | |
3464 | cope with complex macro expressions. Always use the macro instead. | |
3465 | ||
3466 | IV sv_iv(SV* sv) | |
3467 | ||
3468 | =for hackers | |
3469 | Found in file sv.c | |
3470 | ||
954c1994 GS |
3471 | =item sv_len |
3472 | ||
645c22ef DM |
3473 | Returns the length of the string in the SV. Handles magic and type |
3474 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
3475 | |
3476 | STRLEN sv_len(SV* sv) | |
3477 | ||
497711e7 GS |
3478 | =for hackers |
3479 | Found in file sv.c | |
3480 | ||
c461cf8f JH |
3481 | =item sv_len_utf8 |
3482 | ||
3483 | Returns the number of characters in the string in an SV, counting wide | |
645c22ef | 3484 | UTF8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
3485 | |
3486 | STRLEN sv_len_utf8(SV* sv) | |
3487 | ||
3488 | =for hackers | |
3489 | Found in file sv.c | |
3490 | ||
954c1994 GS |
3491 | =item sv_magic |
3492 | ||
645c22ef DM |
3493 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
3494 | then adds a new magic item of type C<how> to the head of the magic list. | |
3495 | ||
3496 | C<name> is assumed to contain an C<SV*> if C<(name && namelen == HEf_SVKEY)> | |
954c1994 GS |
3497 | |
3498 | void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen) | |
3499 | ||
497711e7 GS |
3500 | =for hackers |
3501 | Found in file sv.c | |
3502 | ||
954c1994 GS |
3503 | =item sv_mortalcopy |
3504 | ||
645c22ef | 3505 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
793edb8a JH |
3506 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
3507 | explicit call to FREETMPS, or by an implicit call at places such as | |
3508 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
3509 | |
3510 | SV* sv_mortalcopy(SV* oldsv) | |
3511 | ||
497711e7 GS |
3512 | =for hackers |
3513 | Found in file sv.c | |
3514 | ||
954c1994 GS |
3515 | =item sv_newmortal |
3516 | ||
645c22ef | 3517 | Creates a new null SV which is mortal. The reference count of the SV is |
793edb8a JH |
3518 | set to 1. It will be destroyed "soon", either by an explicit call to |
3519 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
3520 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
3521 | |
3522 | SV* sv_newmortal() | |
3523 | ||
497711e7 GS |
3524 | =for hackers |
3525 | Found in file sv.c | |
3526 | ||
645c22ef DM |
3527 | =item sv_newref |
3528 | ||
3529 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
3530 | instead. | |
3531 | ||
3532 | SV* sv_newref(SV* sv) | |
3533 | ||
3534 | =for hackers | |
3535 | Found in file sv.c | |
3536 | ||
3537 | =item sv_nv | |
3538 | ||
3539 | A private implementation of the C<SvNVx> macro for compilers which can't | |
3540 | cope with complex macro expressions. Always use the macro instead. | |
3541 | ||
3542 | NV sv_nv(SV* sv) | |
3543 | ||
3544 | =for hackers | |
3545 | Found in file sv.c | |
3546 | ||
3547 | =item sv_pos_b2u | |
3548 | ||
3549 | Converts the value pointed to by offsetp from a count of bytes from the | |
3550 | start of the string, to a count of the equivalent number of UTF8 chars. | |
3551 | Handles magic and type coercion. | |
3552 | ||
3553 | void sv_pos_b2u(SV* sv, I32* offsetp) | |
3554 | ||
3555 | =for hackers | |
3556 | Found in file sv.c | |
3557 | ||
3558 | =item sv_pos_u2b | |
3559 | ||
3560 | Converts the value pointed to by offsetp from a count of UTF8 chars from | |
3561 | the start of the string, to a count of the equivalent number of bytes; if | |
3562 | lenp is non-zero, it does the same to lenp, but this time starting from | |
3563 | the offset, rather than from the start of the string. Handles magic and | |
3564 | type coercion. | |
3565 | ||
3566 | void sv_pos_u2b(SV* sv, I32* offsetp, I32* lenp) | |
3567 | ||
3568 | =for hackers | |
3569 | Found in file sv.c | |
3570 | ||
451be7b1 DM |
3571 | =item sv_pv |
3572 | ||
3573 | A private implementation of the C<SvPV_nolen> macro for compilers which can't | |
3574 | cope with complex macro expressions. Always use the macro instead. | |
3575 | ||
3576 | char* sv_pv(SV *sv) | |
3577 | ||
3578 | =for hackers | |
3579 | Found in file sv.c | |
3580 | ||
645c22ef DM |
3581 | =item sv_pvbyte |
3582 | ||
3583 | A private implementation of the C<SvPVbyte_nolen> macro for compilers | |
3584 | which can't cope with complex macro expressions. Always use the macro | |
3585 | instead. | |
3586 | ||
3587 | char* sv_pvbyte(SV *sv) | |
3588 | ||
3589 | =for hackers | |
3590 | Found in file sv.c | |
3591 | ||
3592 | =item sv_pvbyten | |
3593 | ||
3594 | A private implementation of the C<SvPVbyte> macro for compilers | |
3595 | which can't cope with complex macro expressions. Always use the macro | |
3596 | instead. | |
3597 | ||
3598 | char* sv_pvbyten(SV *sv, STRLEN *len) | |
3599 | ||
3600 | =for hackers | |
3601 | Found in file sv.c | |
3602 | ||
3603 | =item sv_pvbyten_force | |
3604 | ||
3605 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
3606 | which can't cope with complex macro expressions. Always use the macro | |
3607 | instead. | |
3608 | ||
3609 | char* sv_pvbyten_force(SV* sv, STRLEN* lp) | |
3610 | ||
3611 | =for hackers | |
3612 | Found in file sv.c | |
3613 | ||
451be7b1 DM |
3614 | =item sv_pvn |
3615 | ||
3616 | A private implementation of the C<SvPV> macro for compilers which can't | |
3617 | cope with complex macro expressions. Always use the macro instead. | |
3618 | ||
3619 | char* sv_pvn(SV *sv, STRLEN *len) | |
3620 | ||
3621 | =for hackers | |
3622 | Found in file sv.c | |
3623 | ||
c461cf8f JH |
3624 | =item sv_pvn_force |
3625 | ||
3626 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
3627 | A private implementation of the C<SvPV_force> macro for compilers which |
3628 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f JH |
3629 | |
3630 | char* sv_pvn_force(SV* sv, STRLEN* lp) | |
3631 | ||
3632 | =for hackers | |
3633 | Found in file sv.c | |
3634 | ||
8d6d96c1 HS |
3635 | =item sv_pvn_force_flags |
3636 | ||
3637 | Get a sensible string out of the SV somehow. | |
3638 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
3639 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
3640 | implemented in terms of this function. | |
645c22ef DM |
3641 | You normally want to use the various wrapper macros instead: see |
3642 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
3643 | |
3644 | char* sv_pvn_force_flags(SV* sv, STRLEN* lp, I32 flags) | |
3645 | ||
3646 | =for hackers | |
3647 | Found in file sv.c | |
3648 | ||
645c22ef DM |
3649 | =item sv_pvutf8 |
3650 | ||
3651 | A private implementation of the C<SvPVutf8_nolen> macro for compilers | |
3652 | which can't cope with complex macro expressions. Always use the macro | |
3653 | instead. | |
3654 | ||
3655 | char* sv_pvutf8(SV *sv) | |
3656 | ||
3657 | =for hackers | |
3658 | Found in file sv.c | |
3659 | ||
3660 | =item sv_pvutf8n | |
3661 | ||
3662 | A private implementation of the C<SvPVutf8> macro for compilers | |
3663 | which can't cope with complex macro expressions. Always use the macro | |
3664 | instead. | |
3665 | ||
3666 | char* sv_pvutf8n(SV *sv, STRLEN *len) | |
3667 | ||
3668 | =for hackers | |
3669 | Found in file sv.c | |
3670 | ||
c461cf8f JH |
3671 | =item sv_pvutf8n_force |
3672 | ||
645c22ef DM |
3673 | A private implementation of the C<SvPVutf8_force> macro for compilers |
3674 | which can't cope with complex macro expressions. Always use the macro | |
3675 | instead. | |
c461cf8f JH |
3676 | |
3677 | char* sv_pvutf8n_force(SV* sv, STRLEN* lp) | |
3678 | ||
3679 | =for hackers | |
3680 | Found in file sv.c | |
3681 | ||
9f4817db JH |
3682 | =item sv_recode_to_utf8 |
3683 | ||
5d170f3a JH |
3684 | The encoding is assumed to be an Encode object, on entry the PV |
3685 | of the sv is assumed to be octets in that encoding, and the sv | |
3686 | will be converted into Unicode (and UTF-8). | |
9f4817db | 3687 | |
5d170f3a | 3688 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
1768d7eb JH |
3689 | is not a reference, nothing is done to the sv. If the encoding is not |
3690 | an C<Encode::XS> Encoding object, bad things will happen. | |
3691 | (See F<lib/encoding.pm> and L<Encode>). | |
5d170f3a JH |
3692 | |
3693 | The PV of the sv is returned. | |
3694 | ||
1768d7eb | 3695 | char* sv_recode_to_utf8(SV* sv, SV *encoding) |
9f4817db JH |
3696 | |
3697 | =for hackers | |
3698 | Found in file sv.c | |
3699 | ||
c461cf8f JH |
3700 | =item sv_reftype |
3701 | ||
3702 | Returns a string describing what the SV is a reference to. | |
3703 | ||
3704 | char* sv_reftype(SV* sv, int ob) | |
3705 | ||
3706 | =for hackers | |
3707 | Found in file sv.c | |
3708 | ||
3709 | =item sv_replace | |
3710 | ||
3711 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
3712 | The target SV physically takes over ownership of the body of the source SV |
3713 | and inherits its flags; however, the target keeps any magic it owns, | |
3714 | and any magic in the source is discarded. | |
ff276b08 | 3715 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 3716 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
3717 | |
3718 | void sv_replace(SV* sv, SV* nsv) | |
3719 | ||
3720 | =for hackers | |
3721 | Found in file sv.c | |
3722 | ||
645c22ef DM |
3723 | =item sv_report_used |
3724 | ||
3725 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
3726 | ||
3727 | void sv_report_used() | |
3728 | ||
3729 | =for hackers | |
3730 | Found in file sv.c | |
3731 | ||
451be7b1 DM |
3732 | =item sv_reset |
3733 | ||
3734 | Underlying implementation for the C<reset> Perl function. | |
3735 | Note that the perl-level function is vaguely deprecated. | |
3736 | ||
3737 | void sv_reset(char* s, HV* stash) | |
3738 | ||
3739 | =for hackers | |
3740 | Found in file sv.c | |
3741 | ||
c461cf8f JH |
3742 | =item sv_rvweaken |
3743 | ||
645c22ef DM |
3744 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
3745 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
3746 | push a back-reference to this RV onto the array of backreferences | |
3747 | associated with that magic. | |
c461cf8f JH |
3748 | |
3749 | SV* sv_rvweaken(SV *sv) | |
3750 | ||
3751 | =for hackers | |
3752 | Found in file sv.c | |
3753 | ||
954c1994 GS |
3754 | =item sv_setiv |
3755 | ||
645c22ef DM |
3756 | Copies an integer into the given SV, upgrading first if necessary. |
3757 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
3758 | |
3759 | void sv_setiv(SV* sv, IV num) | |
3760 | ||
497711e7 GS |
3761 | =for hackers |
3762 | Found in file sv.c | |
3763 | ||
954c1994 GS |
3764 | =item sv_setiv_mg |
3765 | ||
3766 | Like C<sv_setiv>, but also handles 'set' magic. | |
3767 | ||
3768 | void sv_setiv_mg(SV *sv, IV i) | |
3769 | ||
497711e7 GS |
3770 | =for hackers |
3771 | Found in file sv.c | |
3772 | ||
954c1994 GS |
3773 | =item sv_setnv |
3774 | ||
645c22ef DM |
3775 | Copies a double into the given SV, upgrading first if necessary. |
3776 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
3777 | |
3778 | void sv_setnv(SV* sv, NV num) | |
3779 | ||
497711e7 GS |
3780 | =for hackers |
3781 | Found in file sv.c | |
3782 | ||
954c1994 GS |
3783 | =item sv_setnv_mg |
3784 | ||
3785 | Like C<sv_setnv>, but also handles 'set' magic. | |
3786 | ||
3787 | void sv_setnv_mg(SV *sv, NV num) | |
3788 | ||
497711e7 GS |
3789 | =for hackers |
3790 | Found in file sv.c | |
3791 | ||
954c1994 GS |
3792 | =item sv_setpv |
3793 | ||
3794 | Copies a string into an SV. The string must be null-terminated. Does not | |
3795 | handle 'set' magic. See C<sv_setpv_mg>. | |
3796 | ||
3797 | void sv_setpv(SV* sv, const char* ptr) | |
3798 | ||
497711e7 GS |
3799 | =for hackers |
3800 | Found in file sv.c | |
3801 | ||
954c1994 GS |
3802 | =item sv_setpvf |
3803 | ||
3804 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
3805 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
3806 | ||
3807 | void sv_setpvf(SV* sv, const char* pat, ...) | |
3808 | ||
497711e7 GS |
3809 | =for hackers |
3810 | Found in file sv.c | |
3811 | ||
954c1994 GS |
3812 | =item sv_setpvf_mg |
3813 | ||
3814 | Like C<sv_setpvf>, but also handles 'set' magic. | |
3815 | ||
3816 | void sv_setpvf_mg(SV *sv, const char* pat, ...) | |
3817 | ||
497711e7 GS |
3818 | =for hackers |
3819 | Found in file sv.c | |
3820 | ||
954c1994 GS |
3821 | =item sv_setpviv |
3822 | ||
3823 | Copies an integer into the given SV, also updating its string value. | |
3824 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
3825 | ||
3826 | void sv_setpviv(SV* sv, IV num) | |
3827 | ||
497711e7 GS |
3828 | =for hackers |
3829 | Found in file sv.c | |
3830 | ||
954c1994 GS |
3831 | =item sv_setpviv_mg |
3832 | ||
3833 | Like C<sv_setpviv>, but also handles 'set' magic. | |
3834 | ||
3835 | void sv_setpviv_mg(SV *sv, IV iv) | |
3836 | ||
497711e7 GS |
3837 | =for hackers |
3838 | Found in file sv.c | |
3839 | ||
954c1994 GS |
3840 | =item sv_setpvn |
3841 | ||
3842 | Copies a string into an SV. The C<len> parameter indicates the number of | |
3843 | bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
3844 | ||
3845 | void sv_setpvn(SV* sv, const char* ptr, STRLEN len) | |
3846 | ||
497711e7 GS |
3847 | =for hackers |
3848 | Found in file sv.c | |
3849 | ||
954c1994 GS |
3850 | =item sv_setpvn_mg |
3851 | ||
3852 | Like C<sv_setpvn>, but also handles 'set' magic. | |
3853 | ||
3854 | void sv_setpvn_mg(SV *sv, const char *ptr, STRLEN len) | |
3855 | ||
497711e7 GS |
3856 | =for hackers |
3857 | Found in file sv.c | |
3858 | ||
954c1994 GS |
3859 | =item sv_setpv_mg |
3860 | ||
3861 | Like C<sv_setpv>, but also handles 'set' magic. | |
3862 | ||
3863 | void sv_setpv_mg(SV *sv, const char *ptr) | |
3864 | ||
497711e7 GS |
3865 | =for hackers |
3866 | Found in file sv.c | |
3867 | ||
954c1994 GS |
3868 | =item sv_setref_iv |
3869 | ||
3870 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
3871 | argument will be upgraded to an RV. That RV will be modified to point to | |
3872 | the new SV. The C<classname> argument indicates the package for the | |
3873 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
3874 | will be returned and will have a reference count of 1. | |
3875 | ||
3876 | SV* sv_setref_iv(SV* rv, const char* classname, IV iv) | |
3877 | ||
497711e7 GS |
3878 | =for hackers |
3879 | Found in file sv.c | |
3880 | ||
954c1994 GS |
3881 | =item sv_setref_nv |
3882 | ||
3883 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
3884 | argument will be upgraded to an RV. That RV will be modified to point to | |
3885 | the new SV. The C<classname> argument indicates the package for the | |
3886 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
3887 | will be returned and will have a reference count of 1. | |
3888 | ||
3889 | SV* sv_setref_nv(SV* rv, const char* classname, NV nv) | |
3890 | ||
497711e7 GS |
3891 | =for hackers |
3892 | Found in file sv.c | |
3893 | ||
954c1994 GS |
3894 | =item sv_setref_pv |
3895 | ||
3896 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
3897 | argument will be upgraded to an RV. That RV will be modified to point to | |
3898 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
3899 | into the SV. The C<classname> argument indicates the package for the | |
3900 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
3901 | will be returned and will have a reference count of 1. | |
3902 | ||
3903 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
3904 | objects will become corrupted by the pointer copy process. | |
3905 | ||
3906 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
3907 | ||
3908 | SV* sv_setref_pv(SV* rv, const char* classname, void* pv) | |
3909 | ||
497711e7 GS |
3910 | =for hackers |
3911 | Found in file sv.c | |
3912 | ||
954c1994 GS |
3913 | =item sv_setref_pvn |
3914 | ||
3915 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
3916 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
3917 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
3918 | argument indicates the package for the blessing. Set C<classname> to | |
3919 | C<Nullch> to avoid the blessing. The new SV will be returned and will have | |
3920 | a reference count of 1. | |
3921 | ||
3922 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
3923 | ||
3924 | SV* sv_setref_pvn(SV* rv, const char* classname, char* pv, STRLEN n) | |
3925 | ||
497711e7 GS |
3926 | =for hackers |
3927 | Found in file sv.c | |
3928 | ||
e1c57cef JH |
3929 | =item sv_setref_uv |
3930 | ||
3931 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
3932 | argument will be upgraded to an RV. That RV will be modified to point to | |
3933 | the new SV. The C<classname> argument indicates the package for the | |
3934 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
3935 | will be returned and will have a reference count of 1. | |
3936 | ||
3937 | SV* sv_setref_uv(SV* rv, const char* classname, UV uv) | |
3938 | ||
3939 | =for hackers | |
3940 | Found in file sv.c | |
3941 | ||
954c1994 GS |
3942 | =item sv_setsv |
3943 | ||
645c22ef DM |
3944 | Copies the contents of the source SV C<ssv> into the destination SV |
3945 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3946 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3947 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3948 | content of the destination. | |
3949 | ||
3950 | You probably want to use one of the assortment of wrappers, such as | |
3951 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3952 | C<SvSetMagicSV_nosteal>. | |
3953 | ||
954c1994 GS |
3954 | |
3955 | void sv_setsv(SV* dsv, SV* ssv) | |
3956 | ||
497711e7 GS |
3957 | =for hackers |
3958 | Found in file sv.c | |
3959 | ||
8d6d96c1 HS |
3960 | =item sv_setsv_flags |
3961 | ||
645c22ef DM |
3962 | Copies the contents of the source SV C<ssv> into the destination SV |
3963 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3964 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3965 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3966 | content of the destination. | |
3967 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
3968 | C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are | |
3969 | implemented in terms of this function. | |
3970 | ||
3971 | You probably want to use one of the assortment of wrappers, such as | |
3972 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3973 | C<SvSetMagicSV_nosteal>. | |
3974 | ||
3975 | This is the primary function for copying scalars, and most other | |
3976 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3977 | |
3978 | void sv_setsv_flags(SV* dsv, SV* ssv, I32 flags) | |
3979 | ||
3980 | =for hackers | |
3981 | Found in file sv.c | |
3982 | ||
954c1994 GS |
3983 | =item sv_setsv_mg |
3984 | ||
3985 | Like C<sv_setsv>, but also handles 'set' magic. | |
3986 | ||
3987 | void sv_setsv_mg(SV *dstr, SV *sstr) | |
3988 | ||
497711e7 GS |
3989 | =for hackers |
3990 | Found in file sv.c | |
3991 | ||
954c1994 GS |
3992 | =item sv_setuv |
3993 | ||
645c22ef DM |
3994 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
3995 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
3996 | |
3997 | void sv_setuv(SV* sv, UV num) | |
3998 | ||
497711e7 GS |
3999 | =for hackers |
4000 | Found in file sv.c | |
4001 | ||
954c1994 GS |
4002 | =item sv_setuv_mg |
4003 | ||
4004 | Like C<sv_setuv>, but also handles 'set' magic. | |
4005 | ||
4006 | void sv_setuv_mg(SV *sv, UV u) | |
4007 | ||
497711e7 GS |
4008 | =for hackers |
4009 | Found in file sv.c | |
4010 | ||
645c22ef DM |
4011 | =item sv_taint |
4012 | ||
4013 | Taint an SV. Use C<SvTAINTED_on> instead. | |
4014 | void sv_taint(SV* sv) | |
4015 | ||
4016 | =for hackers | |
4017 | Found in file sv.c | |
4018 | ||
451be7b1 DM |
4019 | =item sv_tainted |
4020 | ||
4021 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
4022 | bool sv_tainted(SV* sv) | |
4023 | ||
4024 | =for hackers | |
4025 | Found in file sv.c | |
4026 | ||
c461cf8f JH |
4027 | =item sv_true |
4028 | ||
4029 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
4030 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
4031 | instead use an in-line version. | |
c461cf8f JH |
4032 | |
4033 | I32 sv_true(SV *sv) | |
4034 | ||
4035 | =for hackers | |
4036 | Found in file sv.c | |
4037 | ||
4038 | =item sv_unmagic | |
4039 | ||
645c22ef | 4040 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
4041 | |
4042 | int sv_unmagic(SV* sv, int type) | |
4043 | ||
4044 | =for hackers | |
4045 | Found in file sv.c | |
4046 | ||
954c1994 GS |
4047 | =item sv_unref |
4048 | ||
4049 | Unsets the RV status of the SV, and decrements the reference count of | |
4050 | whatever was being referenced by the RV. This can almost be thought of | |
b06226ff | 4051 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> |
ae154d6d | 4052 | being zero. See C<SvROK_off>. |
954c1994 GS |
4053 | |
4054 | void sv_unref(SV* sv) | |
4055 | ||
497711e7 GS |
4056 | =for hackers |
4057 | Found in file sv.c | |
4058 | ||
840a7b70 IZ |
4059 | =item sv_unref_flags |
4060 | ||
4061 | Unsets the RV status of the SV, and decrements the reference count of | |
4062 | whatever was being referenced by the RV. This can almost be thought of | |
4063 | as a reversal of C<newSVrv>. The C<cflags> argument can contain | |
4064 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
4065 | (otherwise the decrementing is conditional on the reference count being | |
4066 | different from one or the reference being a readonly SV). | |
ae154d6d | 4067 | See C<SvROK_off>. |
840a7b70 IZ |
4068 | |
4069 | void sv_unref_flags(SV* sv, U32 flags) | |
4070 | ||
4071 | =for hackers | |
4072 | Found in file sv.c | |
4073 | ||
451be7b1 DM |
4074 | =item sv_untaint |
4075 | ||
4076 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
4077 | void sv_untaint(SV* sv) | |
4078 | ||
4079 | =for hackers | |
4080 | Found in file sv.c | |
4081 | ||
954c1994 GS |
4082 | =item sv_upgrade |
4083 | ||
ff276b08 | 4084 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 4085 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 4086 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
4087 | |
4088 | bool sv_upgrade(SV* sv, U32 mt) | |
4089 | ||
497711e7 GS |
4090 | =for hackers |
4091 | Found in file sv.c | |
4092 | ||
954c1994 GS |
4093 | =item sv_usepvn |
4094 | ||
4095 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4096 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4097 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4098 | string length, C<len>, must be supplied. This function will realloc the | |
4099 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4100 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4101 | See C<sv_usepvn_mg>. | |
4102 | ||
4103 | void sv_usepvn(SV* sv, char* ptr, STRLEN len) | |
4104 | ||
497711e7 GS |
4105 | =for hackers |
4106 | Found in file sv.c | |
4107 | ||
954c1994 GS |
4108 | =item sv_usepvn_mg |
4109 | ||
4110 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4111 | ||
4112 | void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len) | |
4113 | ||
497711e7 GS |
4114 | =for hackers |
4115 | Found in file sv.c | |
4116 | ||
2457d041 JH |
4117 | =item sv_utf8_decode |
4118 | ||
4119 | Convert the octets in the PV from UTF-8 to chars. Scan for validity and then | |
645c22ef | 4120 | turn off SvUTF8 if needed so that we see characters. Used as a building block |
2457d041 JH |
4121 | for decode_utf8 in Encode.xs |
4122 | ||
4123 | NOTE: this function is experimental and may change or be | |
4124 | removed without notice. | |
4125 | ||
4126 | bool sv_utf8_decode(SV *sv) | |
4127 | ||
4128 | =for hackers | |
4129 | Found in file sv.c | |
4130 | ||
c461cf8f JH |
4131 | =item sv_utf8_downgrade |
4132 | ||
4133 | Attempt to convert the PV of an SV from UTF8-encoded to byte encoding. | |
4134 | This may not be possible if the PV contains non-byte encoding characters; | |
4135 | if this is the case, either returns false or, if C<fail_ok> is not | |
4136 | true, croaks. | |
4137 | ||
4138 | NOTE: this function is experimental and may change or be | |
4139 | removed without notice. | |
4140 | ||
4141 | bool sv_utf8_downgrade(SV *sv, bool fail_ok) | |
4142 | ||
4143 | =for hackers | |
4144 | Found in file sv.c | |
4145 | ||
4146 | =item sv_utf8_encode | |
4147 | ||
4148 | Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8> | |
2457d041 JH |
4149 | flag so that it looks like octets again. Used as a building block |
4150 | for encode_utf8 in Encode.xs | |
c461cf8f JH |
4151 | |
4152 | void sv_utf8_encode(SV *sv) | |
4153 | ||
4154 | =for hackers | |
4155 | Found in file sv.c | |
4156 | ||
4157 | =item sv_utf8_upgrade | |
4158 | ||
4159 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 4160 | Forces the SV to string form if it is not already. |
2457d041 JH |
4161 | Always sets the SvUTF8 flag to avoid future validity checks even |
4162 | if all the bytes have hibit clear. | |
c461cf8f | 4163 | |
2457d041 | 4164 | STRLEN sv_utf8_upgrade(SV *sv) |
c461cf8f JH |
4165 | |
4166 | =for hackers | |
4167 | Found in file sv.c | |
4168 | ||
8d6d96c1 HS |
4169 | =item sv_utf8_upgrade_flags |
4170 | ||
4171 | Convert the PV of an SV to its UTF8-encoded form. | |
645c22ef | 4172 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
4173 | Always sets the SvUTF8 flag to avoid future validity checks even |
4174 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
4175 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
4176 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
4177 | ||
4178 | STRLEN sv_utf8_upgrade_flags(SV *sv, I32 flags) | |
4179 | ||
4180 | =for hackers | |
4181 | Found in file sv.c | |
4182 | ||
645c22ef DM |
4183 | =item sv_uv |
4184 | ||
4185 | A private implementation of the C<SvUVx> macro for compilers which can't | |
4186 | cope with complex macro expressions. Always use the macro instead. | |
4187 | ||
4188 | UV sv_uv(SV* sv) | |
4189 | ||
4190 | =for hackers | |
4191 | Found in file sv.c | |
4192 | ||
954c1994 GS |
4193 | =item sv_vcatpvfn |
4194 | ||
4195 | Processes its arguments like C<vsprintf> and appends the formatted output | |
4196 | to an SV. Uses an array of SVs if the C style variable argument list is | |
4197 | missing (NULL). When running with taint checks enabled, indicates via | |
4198 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
4199 | locales). | |
4200 | ||
645c22ef DM |
4201 | Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>. |
4202 | ||
954c1994 GS |
4203 | void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted) |
4204 | ||
497711e7 GS |
4205 | =for hackers |
4206 | Found in file sv.c | |
4207 | ||
954c1994 GS |
4208 | =item sv_vsetpvfn |
4209 | ||
4210 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
4211 | appending it. | |
4212 | ||
645c22ef DM |
4213 | Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>. |
4214 | ||
954c1994 GS |
4215 | void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted) |
4216 | ||
497711e7 GS |
4217 | =for hackers |
4218 | Found in file sv.c | |
4219 | ||
954c1994 GS |
4220 | =item THIS |
4221 | ||
4222 | Variable which is setup by C<xsubpp> to designate the object in a C++ | |
4223 | XSUB. This is always the proper type for the C++ object. See C<CLASS> and | |
4224 | L<perlxs/"Using XS With C++">. | |
4225 | ||
4226 | (whatever) THIS | |
4227 | ||
497711e7 GS |
4228 | =for hackers |
4229 | Found in file XSUB.h | |
4230 | ||
954c1994 GS |
4231 | =item toLOWER |
4232 | ||
4233 | Converts the specified character to lowercase. | |
4234 | ||
4235 | char toLOWER(char ch) | |
4236 | ||
497711e7 GS |
4237 | =for hackers |
4238 | Found in file handy.h | |
4239 | ||
954c1994 GS |
4240 | =item toUPPER |
4241 | ||
4242 | Converts the specified character to uppercase. | |
4243 | ||
4244 | char toUPPER(char ch) | |
4245 | ||
497711e7 GS |
4246 | =for hackers |
4247 | Found in file handy.h | |
4248 | ||
6b5c0936 JH |
4249 | =item to_utf8_case |
4250 | ||
4251 | The "p" contains the pointer to the UTF-8 string encoding | |
4252 | the character that is being converted. | |
4253 | ||
4254 | The "ustrp" is a pointer to the character buffer to put the | |
4255 | conversion result to. The "lenp" is a pointer to the length | |
4256 | of the result. | |
4257 | ||
4258 | The "swash" is a pointer to the swash to use. | |
4259 | ||
4260 | The "normal" is a string like "ToLower" which means the swash | |
4261 | $utf8::ToLower, which is stored in lib/unicore/To/Lower.pl, | |
4262 | and loaded by SWASHGET, using lib/utf8_heavy.pl. | |
4263 | ||
4264 | The "special" is a string like "utf8::ToSpecLower", which means | |
d1be9408 | 4265 | the hash %utf8::ToSpecLower, which is stored in the same file, |
6b5c0936 JH |
4266 | lib/unicore/To/Lower.pl, and also loaded by SWASHGET. The access |
4267 | to the hash is by Perl_to_utf8_case(). | |
4268 | ||
4269 | UV to_utf8_case(U8 *p, U8* ustrp, STRLEN *lenp, SV **swash, char *normal, char *special) | |
4270 | ||
4271 | =for hackers | |
4272 | Found in file utf8.c | |
4273 | ||
282f25c9 JH |
4274 | =item utf8n_to_uvchr |
4275 | ||
4276 | Returns the native character value of the first character in the string C<s> | |
4277 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the | |
4278 | length, in bytes, of that character. | |
4279 | ||
4280 | Allows length and flags to be passed to low level routine. | |
4281 | ||
4282 | UV utf8n_to_uvchr(U8 *s, STRLEN curlen, STRLEN* retlen, U32 flags) | |
4283 | ||
4284 | =for hackers | |
4285 | Found in file utf8.c | |
4286 | ||
4287 | =item utf8n_to_uvuni | |
4288 | ||
4289 | Bottom level UTF-8 decode routine. | |
4290 | Returns the unicode code point value of the first character in the string C<s> | |
4291 | which is assumed to be in UTF8 encoding and no longer than C<curlen>; | |
4292 | C<retlen> will be set to the length, in bytes, of that character. | |
4293 | ||
4294 | If C<s> does not point to a well-formed UTF8 character, the behaviour | |
4295 | is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY, | |
4296 | it is assumed that the caller will raise a warning, and this function | |
4297 | will silently just set C<retlen> to C<-1> and return zero. If the | |
4298 | C<flags> does not contain UTF8_CHECK_ONLY, warnings about | |
4299 | malformations will be given, C<retlen> will be set to the expected | |
4300 | length of the UTF-8 character in bytes, and zero will be returned. | |
4301 | ||
4302 | The C<flags> can also contain various flags to allow deviations from | |
4303 | the strict UTF-8 encoding (see F<utf8.h>). | |
4304 | ||
4305 | Most code should use utf8_to_uvchr() rather than call this directly. | |
4306 | ||
4307 | UV utf8n_to_uvuni(U8 *s, STRLEN curlen, STRLEN* retlen, U32 flags) | |
4308 | ||
4309 | =for hackers | |
4310 | Found in file utf8.c | |
4311 | ||
b06226ff JH |
4312 | =item utf8_distance |
4313 | ||
4314 | Returns the number of UTF8 characters between the UTF-8 pointers C<a> | |
4315 | and C<b>. | |
4316 | ||
4317 | WARNING: use only if you *know* that the pointers point inside the | |
4318 | same UTF-8 buffer. | |
4319 | ||
4320 | IV utf8_distance(U8 *a, U8 *b) | |
4321 | ||
4322 | =for hackers | |
4323 | Found in file utf8.c | |
4324 | ||
4325 | =item utf8_hop | |
4326 | ||
8850bf83 JH |
4327 | Return the UTF-8 pointer C<s> displaced by C<off> characters, either |
4328 | forward or backward. | |
b06226ff JH |
4329 | |
4330 | WARNING: do not use the following unless you *know* C<off> is within | |
8850bf83 JH |
4331 | the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned |
4332 | on the first byte of character or just after the last byte of a character. | |
b06226ff JH |
4333 | |
4334 | U8* utf8_hop(U8 *s, I32 off) | |
4335 | ||
4336 | =for hackers | |
4337 | Found in file utf8.c | |
4338 | ||
4339 | =item utf8_length | |
4340 | ||
4341 | Return the length of the UTF-8 char encoded string C<s> in characters. | |
4342 | Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end | |
4343 | up past C<e>, croaks. | |
4344 | ||
4345 | STRLEN utf8_length(U8* s, U8 *e) | |
4346 | ||
4347 | =for hackers | |
4348 | Found in file utf8.c | |
4349 | ||
497711e7 GS |
4350 | =item utf8_to_bytes |
4351 | ||
246fae53 MG |
4352 | Converts a string C<s> of length C<len> from UTF8 into byte encoding. |
4353 | Unlike C<bytes_to_utf8>, this over-writes the original string, and | |
4354 | updates len to contain the new length. | |
67e989fb | 4355 | Returns zero on failure, setting C<len> to -1. |
497711e7 | 4356 | |
eebe1485 SC |
4357 | NOTE: this function is experimental and may change or be |
4358 | removed without notice. | |
4359 | ||
4360 | U8* utf8_to_bytes(U8 *s, STRLEN *len) | |
497711e7 GS |
4361 | |
4362 | =for hackers | |
4363 | Found in file utf8.c | |
4364 | ||
282f25c9 | 4365 | =item utf8_to_uvchr |
b6b716fe | 4366 | |
282f25c9 JH |
4367 | Returns the native character value of the first character in the string C<s> |
4368 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the | |
4369 | length, in bytes, of that character. | |
28d3d195 | 4370 | |
282f25c9 JH |
4371 | If C<s> does not point to a well-formed UTF8 character, zero is |
4372 | returned and retlen is set, if possible, to -1. | |
444155da | 4373 | |
282f25c9 | 4374 | UV utf8_to_uvchr(U8 *s, STRLEN* retlen) |
444155da JH |
4375 | |
4376 | =for hackers | |
4377 | Found in file utf8.c | |
4378 | ||
282f25c9 | 4379 | =item utf8_to_uvuni |
444155da | 4380 | |
282f25c9 | 4381 | Returns the Unicode code point of the first character in the string C<s> |
dcad2880 | 4382 | which is assumed to be in UTF8 encoding; C<retlen> will be set to the |
1aa99e6b | 4383 | length, in bytes, of that character. |
444155da | 4384 | |
282f25c9 JH |
4385 | This function should only be used when returned UV is considered |
4386 | an index into the Unicode semantic tables (e.g. swashes). | |
4387 | ||
dcad2880 JH |
4388 | If C<s> does not point to a well-formed UTF8 character, zero is |
4389 | returned and retlen is set, if possible, to -1. | |
b6b716fe | 4390 | |
282f25c9 JH |
4391 | UV utf8_to_uvuni(U8 *s, STRLEN* retlen) |
4392 | ||
4393 | =for hackers | |
4394 | Found in file utf8.c | |
4395 | ||
4396 | =item uvchr_to_utf8 | |
4397 | ||
4398 | Adds the UTF8 representation of the Native codepoint C<uv> to the end | |
4399 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free | |
4400 | bytes available. The return value is the pointer to the byte after the | |
4401 | end of the new character. In other words, | |
4402 | ||
4403 | d = uvchr_to_utf8(d, uv); | |
4404 | ||
4405 | is the recommended wide native character-aware way of saying | |
4406 | ||
4407 | *(d++) = uv; | |
4408 | ||
4409 | U8* uvchr_to_utf8(U8 *d, UV uv) | |
eebe1485 SC |
4410 | |
4411 | =for hackers | |
4412 | Found in file utf8.c | |
4413 | ||
282f25c9 | 4414 | =item uvuni_to_utf8 |
eebe1485 SC |
4415 | |
4416 | Adds the UTF8 representation of the Unicode codepoint C<uv> to the end | |
4417 | of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free | |
4418 | bytes available. The return value is the pointer to the byte after the | |
282f25c9 | 4419 | end of the new character. In other words, |
eebe1485 | 4420 | |
282f25c9 | 4421 | d = uvuni_to_utf8(d, uv); |
eebe1485 SC |
4422 | |
4423 | is the recommended Unicode-aware way of saying | |
4424 | ||
4425 | *(d++) = uv; | |
4426 | ||
282f25c9 | 4427 | U8* uvuni_to_utf8(U8 *d, UV uv) |
b6b716fe SC |
4428 | |
4429 | =for hackers | |
4430 | Found in file utf8.c | |
4431 | ||
954c1994 GS |
4432 | =item warn |
4433 | ||
4434 | This is the XSUB-writer's interface to Perl's C<warn> function. Use this | |
4435 | function the same way you use the C C<printf> function. See | |
4436 | C<croak>. | |
4437 | ||
4438 | void warn(const char* pat, ...) | |
4439 | ||
497711e7 GS |
4440 | =for hackers |
4441 | Found in file util.c | |
4442 | ||
954c1994 GS |
4443 | =item XPUSHi |
4444 | ||
4445 | Push an integer onto the stack, extending the stack if necessary. Handles | |
4446 | 'set' magic. See C<PUSHi>. | |
4447 | ||
4448 | void XPUSHi(IV iv) | |
4449 | ||
497711e7 GS |
4450 | =for hackers |
4451 | Found in file pp.h | |
4452 | ||
954c1994 GS |
4453 | =item XPUSHn |
4454 | ||
4455 | Push a double onto the stack, extending the stack if necessary. Handles | |
4456 | 'set' magic. See C<PUSHn>. | |
4457 | ||
4458 | void XPUSHn(NV nv) | |
4459 | ||
497711e7 GS |
4460 | =for hackers |
4461 | Found in file pp.h | |
4462 | ||
954c1994 GS |
4463 | =item XPUSHp |
4464 | ||
4465 | Push a string onto the stack, extending the stack if necessary. The C<len> | |
4466 | indicates the length of the string. Handles 'set' magic. See | |
4467 | C<PUSHp>. | |
4468 | ||
4469 | void XPUSHp(char* str, STRLEN len) | |
4470 | ||
497711e7 GS |
4471 | =for hackers |
4472 | Found in file pp.h | |
4473 | ||
954c1994 GS |
4474 | =item XPUSHs |
4475 | ||
4476 | Push an SV onto the stack, extending the stack if necessary. Does not | |
4477 | handle 'set' magic. See C<PUSHs>. | |
4478 | ||
4479 | void XPUSHs(SV* sv) | |
4480 | ||
497711e7 GS |
4481 | =for hackers |
4482 | Found in file pp.h | |
4483 | ||
954c1994 GS |
4484 | =item XPUSHu |
4485 | ||
1c846c1f | 4486 | Push an unsigned integer onto the stack, extending the stack if necessary. |
954c1994 GS |
4487 | See C<PUSHu>. |
4488 | ||
4489 | void XPUSHu(UV uv) | |
4490 | ||
497711e7 GS |
4491 | =for hackers |
4492 | Found in file pp.h | |
4493 | ||
954c1994 GS |
4494 | =item XS |
4495 | ||
4496 | Macro to declare an XSUB and its C parameter list. This is handled by | |
4497 | C<xsubpp>. | |
4498 | ||
497711e7 GS |
4499 | =for hackers |
4500 | Found in file XSUB.h | |
4501 | ||
954c1994 GS |
4502 | =item XSRETURN |
4503 | ||
4504 | Return from XSUB, indicating number of items on the stack. This is usually | |
4505 | handled by C<xsubpp>. | |
4506 | ||
4507 | void XSRETURN(int nitems) | |
4508 | ||
497711e7 GS |
4509 | =for hackers |
4510 | Found in file XSUB.h | |
4511 | ||
954c1994 GS |
4512 | =item XSRETURN_EMPTY |
4513 | ||
4514 | Return an empty list from an XSUB immediately. | |
4515 | ||
4516 | XSRETURN_EMPTY; | |
4517 | ||
497711e7 GS |
4518 | =for hackers |
4519 | Found in file XSUB.h | |
4520 | ||
954c1994 GS |
4521 | =item XSRETURN_IV |
4522 | ||
4523 | Return an integer from an XSUB immediately. Uses C<XST_mIV>. | |
4524 | ||
4525 | void XSRETURN_IV(IV iv) | |
4526 | ||
497711e7 GS |
4527 | =for hackers |
4528 | Found in file XSUB.h | |
4529 | ||
954c1994 GS |
4530 | =item XSRETURN_NO |
4531 | ||
4532 | Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>. | |
4533 | ||
4534 | XSRETURN_NO; | |
4535 | ||
497711e7 GS |
4536 | =for hackers |
4537 | Found in file XSUB.h | |
4538 | ||
954c1994 GS |
4539 | =item XSRETURN_NV |
4540 | ||
f4758303 | 4541 | Return a double from an XSUB immediately. Uses C<XST_mNV>. |
954c1994 GS |
4542 | |
4543 | void XSRETURN_NV(NV nv) | |
4544 | ||
497711e7 GS |
4545 | =for hackers |
4546 | Found in file XSUB.h | |
4547 | ||
954c1994 GS |
4548 | =item XSRETURN_PV |
4549 | ||
4550 | Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>. | |
4551 | ||
4552 | void XSRETURN_PV(char* str) | |
4553 | ||
497711e7 GS |
4554 | =for hackers |
4555 | Found in file XSUB.h | |
4556 | ||
954c1994 GS |
4557 | =item XSRETURN_UNDEF |
4558 | ||
4559 | Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>. | |
4560 | ||
4561 | XSRETURN_UNDEF; | |
4562 | ||
497711e7 GS |
4563 | =for hackers |
4564 | Found in file XSUB.h | |
4565 | ||
954c1994 GS |
4566 | =item XSRETURN_YES |
4567 | ||
4568 | Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>. | |
4569 | ||
4570 | XSRETURN_YES; | |
4571 | ||
497711e7 GS |
4572 | =for hackers |
4573 | Found in file XSUB.h | |
4574 | ||
954c1994 GS |
4575 | =item XST_mIV |
4576 | ||
4577 | Place an integer into the specified position C<pos> on the stack. The | |
4578 | value is stored in a new mortal SV. | |
4579 | ||
4580 | void XST_mIV(int pos, IV iv) | |
4581 | ||
497711e7 GS |
4582 | =for hackers |
4583 | Found in file XSUB.h | |
4584 | ||
954c1994 GS |
4585 | =item XST_mNO |
4586 | ||
4587 | Place C<&PL_sv_no> into the specified position C<pos> on the | |
4588 | stack. | |
4589 | ||
4590 | void XST_mNO(int pos) | |
4591 | ||
497711e7 GS |
4592 | =for hackers |
4593 | Found in file XSUB.h | |
4594 | ||
954c1994 GS |
4595 | =item XST_mNV |
4596 | ||
4597 | Place a double into the specified position C<pos> on the stack. The value | |
4598 | is stored in a new mortal SV. | |
4599 | ||
4600 | void XST_mNV(int pos, NV nv) | |
4601 | ||
497711e7 GS |
4602 | =for hackers |
4603 | Found in file XSUB.h | |
4604 | ||
954c1994 GS |
4605 | =item XST_mPV |
4606 | ||
4607 | Place a copy of a string into the specified position C<pos> on the stack. | |
4608 | The value is stored in a new mortal SV. | |
4609 | ||
4610 | void XST_mPV(int pos, char* str) | |
4611 | ||
497711e7 GS |
4612 | =for hackers |
4613 | Found in file XSUB.h | |
4614 | ||
954c1994 GS |
4615 | =item XST_mUNDEF |
4616 | ||
4617 | Place C<&PL_sv_undef> into the specified position C<pos> on the | |
4618 | stack. | |
4619 | ||
4620 | void XST_mUNDEF(int pos) | |
4621 | ||
497711e7 GS |
4622 | =for hackers |
4623 | Found in file XSUB.h | |
4624 | ||
954c1994 GS |
4625 | =item XST_mYES |
4626 | ||
4627 | Place C<&PL_sv_yes> into the specified position C<pos> on the | |
4628 | stack. | |
4629 | ||
4630 | void XST_mYES(int pos) | |
4631 | ||
497711e7 GS |
4632 | =for hackers |
4633 | Found in file XSUB.h | |
4634 | ||
954c1994 GS |
4635 | =item XS_VERSION |
4636 | ||
4637 | The version identifier for an XS module. This is usually | |
4638 | handled automatically by C<ExtUtils::MakeMaker>. See C<XS_VERSION_BOOTCHECK>. | |
4639 | ||
497711e7 GS |
4640 | =for hackers |
4641 | Found in file XSUB.h | |
4642 | ||
954c1994 GS |
4643 | =item XS_VERSION_BOOTCHECK |
4644 | ||
4645 | Macro to verify that a PM module's $VERSION variable matches the XS | |
4646 | module's C<XS_VERSION> variable. This is usually handled automatically by | |
4647 | C<xsubpp>. See L<perlxs/"The VERSIONCHECK: Keyword">. | |
4648 | ||
4649 | XS_VERSION_BOOTCHECK; | |
4650 | ||
497711e7 GS |
4651 | =for hackers |
4652 | Found in file XSUB.h | |
4653 | ||
954c1994 GS |
4654 | =item Zero |
4655 | ||
4656 | The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the | |
4657 | destination, C<nitems> is the number of items, and C<type> is the type. | |
4658 | ||
4659 | void Zero(void* dest, int nitems, type) | |
4660 | ||
497711e7 GS |
4661 | =for hackers |
4662 | Found in file handy.h | |
4663 | ||
954c1994 GS |
4664 | =back |
4665 | ||
4666 | =head1 AUTHORS | |
4667 | ||
4668 | Until May 1997, this document was maintained by Jeff Okamoto | |
4669 | <okamoto@corp.hp.com>. It is now maintained as part of Perl itself. | |
4670 | ||
4671 | With lots of help and suggestions from Dean Roehrich, Malcolm Beattie, | |
4672 | Andreas Koenig, Paul Hudson, Ilya Zakharevich, Paul Marquess, Neil | |
4673 | Bowers, Matthew Green, Tim Bunce, Spider Boardman, Ulrich Pfeifer, | |
4674 | Stephen McCamant, and Gurusamy Sarathy. | |
4675 | ||
4676 | API Listing originally by Dean Roehrich <roehrich@cray.com>. | |
4677 | ||
4678 | Updated to be autogenerated from comments in the source by Benjamin Stuhl. | |
4679 | ||
4680 | =head1 SEE ALSO | |
4681 | ||
4682 | perlguts(1), perlxs(1), perlxstut(1), perlintern(1) | |
4683 |