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954c1994 GS |
1 | =head1 NAME |
2 | ||
3 | perlapi - autogenerated documentation for the perl public API | |
4 | ||
5 | =head1 DESCRIPTION | |
6 | ||
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 | |
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 | ||
28 | =item av_clear | |
29 | ||
30 | Clears an array, making it empty. Does not free the memory used by the | |
31 | array itself. | |
32 | ||
33 | void av_clear(AV* ar) | |
34 | ||
35 | =item av_extend | |
36 | ||
37 | Pre-extend an array. The C<key> is the index to which the array should be | |
38 | extended. | |
39 | ||
40 | void av_extend(AV* ar, I32 key) | |
41 | ||
42 | =item av_fetch | |
43 | ||
44 | Returns the SV at the specified index in the array. The C<key> is the | |
45 | index. If C<lval> is set then the fetch will be part of a store. Check | |
46 | that the return value is non-null before dereferencing it to a C<SV*>. | |
47 | ||
96f1132b GS |
48 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for |
49 | more information on how to use this function on tied arrays. | |
954c1994 GS |
50 | |
51 | SV** av_fetch(AV* ar, I32 key, I32 lval) | |
52 | ||
53 | =item av_len | |
54 | ||
55 | Returns the highest index in the array. Returns -1 if the array is | |
56 | empty. | |
57 | ||
58 | I32 av_len(AV* ar) | |
59 | ||
60 | =item av_make | |
61 | ||
62 | Creates a new AV and populates it with a list of SVs. The SVs are copied | |
63 | into the array, so they may be freed after the call to av_make. The new AV | |
64 | will have a reference count of 1. | |
65 | ||
66 | AV* av_make(I32 size, SV** svp) | |
67 | ||
68 | =item av_pop | |
69 | ||
70 | Pops an SV off the end of the array. Returns C<&PL_sv_undef> if the array | |
71 | is empty. | |
72 | ||
73 | SV* av_pop(AV* ar) | |
74 | ||
75 | =item av_push | |
76 | ||
77 | Pushes an SV onto the end of the array. The array will grow automatically | |
78 | to accommodate the addition. | |
79 | ||
80 | void av_push(AV* ar, SV* val) | |
81 | ||
82 | =item av_shift | |
83 | ||
84 | Shifts an SV off the beginning of the array. | |
85 | ||
86 | SV* av_shift(AV* ar) | |
87 | ||
88 | =item av_store | |
89 | ||
90 | Stores an SV in an array. The array index is specified as C<key>. The | |
91 | return value will be NULL if the operation failed or if the value did not | |
92 | need to be actually stored within the array (as in the case of tied | |
93 | arrays). Otherwise it can be dereferenced to get the original C<SV*>. Note | |
94 | that the caller is responsible for suitably incrementing the reference | |
95 | count of C<val> before the call, and decrementing it if the function | |
96 | returned NULL. | |
97 | ||
96f1132b | 98 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for |
954c1994 GS |
99 | more information on how to use this function on tied arrays. |
100 | ||
101 | SV** av_store(AV* ar, I32 key, SV* val) | |
102 | ||
103 | =item av_undef | |
104 | ||
105 | Undefines the array. Frees the memory used by the array itself. | |
106 | ||
107 | void av_undef(AV* ar) | |
108 | ||
109 | =item av_unshift | |
110 | ||
111 | Unshift the given number of C<undef> values onto the beginning of the | |
112 | array. The array will grow automatically to accommodate the addition. You | |
113 | must then use C<av_store> to assign values to these new elements. | |
114 | ||
115 | void av_unshift(AV* ar, I32 num) | |
116 | ||
117 | =item call_argv | |
118 | ||
119 | Performs a callback to the specified Perl sub. See L<perlcall>. | |
120 | ||
121 | NOTE: the perl_ form of this function is deprecated. | |
122 | ||
123 | I32 call_argv(const char* sub_name, I32 flags, char** argv) | |
124 | ||
125 | =item call_method | |
126 | ||
127 | Performs a callback to the specified Perl method. The blessed object must | |
128 | be on the stack. See L<perlcall>. | |
129 | ||
130 | NOTE: the perl_ form of this function is deprecated. | |
131 | ||
132 | I32 call_method(const char* methname, I32 flags) | |
133 | ||
134 | =item call_pv | |
135 | ||
136 | Performs a callback to the specified Perl sub. See L<perlcall>. | |
137 | ||
138 | NOTE: the perl_ form of this function is deprecated. | |
139 | ||
140 | I32 call_pv(const char* sub_name, I32 flags) | |
141 | ||
142 | =item call_sv | |
143 | ||
144 | Performs a callback to the Perl sub whose name is in the SV. See | |
145 | L<perlcall>. | |
146 | ||
147 | NOTE: the perl_ form of this function is deprecated. | |
148 | ||
149 | I32 call_sv(SV* sv, I32 flags) | |
150 | ||
151 | =item CLASS | |
152 | ||
153 | Variable which is setup by C<xsubpp> to indicate the | |
154 | class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>. | |
155 | ||
156 | char* CLASS | |
157 | ||
158 | =item Copy | |
159 | ||
160 | The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the | |
161 | source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is | |
162 | the type. May fail on overlapping copies. See also C<Move>. | |
163 | ||
164 | void Copy(void* src, void* dest, int nitems, type) | |
165 | ||
166 | =item croak | |
167 | ||
168 | This is the XSUB-writer's interface to Perl's C<die> function. Use this | |
169 | function the same way you use the C C<printf> function. See | |
170 | C<warn>. | |
171 | ||
172 | void croak(const char* pat, ...) | |
173 | ||
174 | =item CvSTASH | |
175 | ||
176 | Returns the stash of the CV. | |
177 | ||
178 | HV* CvSTASH(CV* cv) | |
179 | ||
180 | =item dMARK | |
181 | ||
182 | Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and | |
183 | C<dORIGMARK>. | |
184 | ||
185 | dMARK; | |
186 | ||
187 | =item dORIGMARK | |
188 | ||
189 | Saves the original stack mark for the XSUB. See C<ORIGMARK>. | |
190 | ||
191 | dORIGMARK; | |
192 | ||
193 | =item dSP | |
194 | ||
195 | Declares a local copy of perl's stack pointer for the XSUB, available via | |
196 | the C<SP> macro. See C<SP>. | |
197 | ||
198 | dSP; | |
199 | ||
200 | =item dXSARGS | |
201 | ||
202 | Sets up stack and mark pointers for an XSUB, calling dSP and dMARK. This | |
203 | is usually handled automatically by C<xsubpp>. Declares the C<items> | |
204 | variable to indicate the number of items on the stack. | |
205 | ||
206 | dXSARGS; | |
207 | ||
208 | =item dXSI32 | |
209 | ||
210 | Sets up the C<ix> variable for an XSUB which has aliases. This is usually | |
211 | handled automatically by C<xsubpp>. | |
212 | ||
213 | dXSI32; | |
214 | ||
215 | =item ENTER | |
216 | ||
217 | Opening bracket on a callback. See C<LEAVE> and L<perlcall>. | |
218 | ||
219 | ENTER; | |
220 | ||
221 | =item eval_pv | |
222 | ||
223 | Tells Perl to C<eval> the given string and return an SV* result. | |
224 | ||
225 | NOTE: the perl_ form of this function is deprecated. | |
226 | ||
227 | SV* eval_pv(const char* p, I32 croak_on_error) | |
228 | ||
229 | =item eval_sv | |
230 | ||
231 | Tells Perl to C<eval> the string in the SV. | |
232 | ||
233 | NOTE: the perl_ form of this function is deprecated. | |
234 | ||
235 | I32 eval_sv(SV* sv, I32 flags) | |
236 | ||
237 | =item EXTEND | |
238 | ||
239 | Used to extend the argument stack for an XSUB's return values. Once | |
240 | used, guarrantees that there is room for at least C<nitems> to be pushed | |
241 | onto the stack. | |
242 | ||
243 | void EXTEND(SP, int nitems) | |
244 | ||
245 | =item fbm_compile | |
246 | ||
247 | Analyses the string in order to make fast searches on it using fbm_instr() | |
248 | -- the Boyer-Moore algorithm. | |
249 | ||
250 | void fbm_compile(SV* sv, U32 flags) | |
251 | ||
252 | =item fbm_instr | |
253 | ||
254 | Returns the location of the SV in the string delimited by C<str> and | |
255 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
256 | does not have to be fbm_compiled, but the search will not be as fast | |
257 | then. | |
258 | ||
259 | char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlesv, U32 flags) | |
260 | ||
261 | =item FREETMPS | |
262 | ||
263 | Closing bracket for temporaries on a callback. See C<SAVETMPS> and | |
264 | L<perlcall>. | |
265 | ||
266 | FREETMPS; | |
267 | ||
268 | =item get_av | |
269 | ||
270 | Returns the AV of the specified Perl array. If C<create> is set and the | |
271 | Perl variable does not exist then it will be created. If C<create> is not | |
272 | set and the variable does not exist then NULL is returned. | |
273 | ||
274 | NOTE: the perl_ form of this function is deprecated. | |
275 | ||
276 | AV* get_av(const char* name, I32 create) | |
277 | ||
278 | =item get_cv | |
279 | ||
280 | Returns the CV of the specified Perl subroutine. If C<create> is set and | |
281 | the Perl subroutine does not exist then it will be declared (which has the | |
282 | same effect as saying C<sub name;>). If C<create> is not set and the | |
283 | subroutine does not exist then NULL is returned. | |
284 | ||
285 | NOTE: the perl_ form of this function is deprecated. | |
286 | ||
287 | CV* get_cv(const char* name, I32 create) | |
288 | ||
289 | =item get_hv | |
290 | ||
291 | Returns the HV of the specified Perl hash. If C<create> is set and the | |
292 | Perl variable does not exist then it will be created. If C<create> is not | |
293 | set and the variable does not exist then NULL is returned. | |
294 | ||
295 | NOTE: the perl_ form of this function is deprecated. | |
296 | ||
297 | HV* get_hv(const char* name, I32 create) | |
298 | ||
299 | =item get_sv | |
300 | ||
301 | Returns the SV of the specified Perl scalar. If C<create> is set and the | |
302 | Perl variable does not exist then it will be created. If C<create> is not | |
303 | set and the variable does not exist then NULL is returned. | |
304 | ||
305 | NOTE: the perl_ form of this function is deprecated. | |
306 | ||
307 | SV* get_sv(const char* name, I32 create) | |
308 | ||
309 | =item GIMME | |
310 | ||
311 | A backward-compatible version of C<GIMME_V> which can only return | |
312 | C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>. | |
313 | Deprecated. Use C<GIMME_V> instead. | |
314 | ||
315 | U32 GIMME | |
316 | ||
317 | =item GIMME_V | |
318 | ||
319 | The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>, | |
320 | C<G_SCALAR> or C<G_ARRAY> for void, scalar or array context, | |
321 | respectively. | |
322 | ||
323 | U32 GIMME_V | |
324 | ||
325 | =item GvSV | |
326 | ||
327 | Return the SV from the GV. | |
328 | ||
329 | SV* GvSV(GV* gv) | |
330 | ||
331 | =item gv_fetchmeth | |
332 | ||
333 | Returns the glob with the given C<name> and a defined subroutine or | |
334 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
335 | accessible via @ISA and @UNIVERSAL. | |
336 | ||
337 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
338 | side-effect creates a glob with the given C<name> in the given C<stash> | |
339 | which in the case of success contains an alias for the subroutine, and sets | |
340 | up caching info for this glob. Similarly for all the searched stashes. | |
341 | ||
342 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
343 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 344 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 GS |
345 | the GV directly; instead, you should use the method's CV, which can be |
346 | obtained from the GV with the C<GvCV> macro. | |
347 | ||
348 | GV* gv_fetchmeth(HV* stash, const char* name, STRLEN len, I32 level) | |
349 | ||
350 | =item gv_fetchmethod | |
351 | ||
6d0f518e | 352 | See L<gv_fetchmethod_autoload>. |
954c1994 GS |
353 | |
354 | GV* gv_fetchmethod(HV* stash, const char* name) | |
355 | ||
356 | =item gv_fetchmethod_autoload | |
357 | ||
358 | Returns the glob which contains the subroutine to call to invoke the method | |
359 | on the C<stash>. In fact in the presence of autoloading this may be the | |
360 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
361 | already setup. | |
362 | ||
363 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
364 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
365 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. | |
366 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> | |
367 | with a non-zero C<autoload> parameter. | |
368 | ||
369 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
370 | that if you want to keep the returned glob for a long time, you need to | |
371 | check for it being "AUTOLOAD", since at the later time the call may load a | |
372 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
373 | created via a side effect to do this. | |
374 | ||
375 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
376 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
377 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
4929bf7b | 378 | C<call_sv> apply equally to these functions. |
954c1994 GS |
379 | |
380 | GV* gv_fetchmethod_autoload(HV* stash, const char* name, I32 autoload) | |
381 | ||
382 | =item gv_stashpv | |
383 | ||
386d01d6 GS |
384 | Returns a pointer to the stash for a specified package. C<name> should |
385 | be a valid UTF-8 string. If C<create> is set then the package will be | |
386 | created if it does not already exist. If C<create> is not set and the | |
387 | package does not exist then NULL is returned. | |
954c1994 GS |
388 | |
389 | HV* gv_stashpv(const char* name, I32 create) | |
390 | ||
391 | =item gv_stashsv | |
392 | ||
386d01d6 GS |
393 | Returns a pointer to the stash for a specified package, which must be a |
394 | valid UTF-8 string. See C<gv_stashpv>. | |
954c1994 GS |
395 | |
396 | HV* gv_stashsv(SV* sv, I32 create) | |
397 | ||
398 | =item G_ARRAY | |
399 | ||
400 | Used to indicate array context. See C<GIMME_V>, C<GIMME> and | |
401 | L<perlcall>. | |
402 | ||
403 | =item G_DISCARD | |
404 | ||
405 | Indicates that arguments returned from a callback should be discarded. See | |
406 | L<perlcall>. | |
407 | ||
408 | =item G_EVAL | |
409 | ||
410 | Used to force a Perl C<eval> wrapper around a callback. See | |
411 | L<perlcall>. | |
412 | ||
413 | =item G_NOARGS | |
414 | ||
415 | Indicates that no arguments are being sent to a callback. See | |
416 | L<perlcall>. | |
417 | ||
418 | =item G_SCALAR | |
419 | ||
420 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
421 | L<perlcall>. | |
422 | ||
423 | =item G_VOID | |
424 | ||
425 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
426 | ||
427 | =item HEf_SVKEY | |
428 | ||
429 | This flag, used in the length slot of hash entries and magic structures, | |
430 | specifies the structure contains a C<SV*> pointer where a C<char*> pointer | |
431 | is to be expected. (For information only--not to be used). | |
432 | ||
433 | =item HeHASH | |
434 | ||
435 | Returns the computed hash stored in the hash entry. | |
436 | ||
437 | U32 HeHASH(HE* he) | |
438 | ||
439 | =item HeKEY | |
440 | ||
441 | Returns the actual pointer stored in the key slot of the hash entry. The | |
442 | pointer may be either C<char*> or C<SV*>, depending on the value of | |
443 | C<HeKLEN()>. Can be assigned to. The C<HePV()> or C<HeSVKEY()> macros are | |
444 | usually preferable for finding the value of a key. | |
445 | ||
446 | void* HeKEY(HE* he) | |
447 | ||
448 | =item HeKLEN | |
449 | ||
450 | If this is negative, and amounts to C<HEf_SVKEY>, it indicates the entry | |
451 | holds an C<SV*> key. Otherwise, holds the actual length of the key. Can | |
452 | be assigned to. The C<HePV()> macro is usually preferable for finding key | |
453 | lengths. | |
454 | ||
455 | STRLEN HeKLEN(HE* he) | |
456 | ||
457 | =item HePV | |
458 | ||
459 | Returns the key slot of the hash entry as a C<char*> value, doing any | |
460 | necessary dereferencing of possibly C<SV*> keys. The length of the string | |
461 | is placed in C<len> (this is a macro, so do I<not> use C<&len>). If you do | |
462 | not care about what the length of the key is, you may use the global | |
463 | variable C<PL_na>, though this is rather less efficient than using a local | |
464 | variable. Remember though, that hash keys in perl are free to contain | |
465 | embedded nulls, so using C<strlen()> or similar is not a good way to find | |
466 | the length of hash keys. This is very similar to the C<SvPV()> macro | |
467 | described elsewhere in this document. | |
468 | ||
469 | char* HePV(HE* he, STRLEN len) | |
470 | ||
471 | =item HeSVKEY | |
472 | ||
473 | Returns the key as an C<SV*>, or C<Nullsv> if the hash entry does not | |
474 | contain an C<SV*> key. | |
475 | ||
476 | SV* HeSVKEY(HE* he) | |
477 | ||
478 | =item HeSVKEY_force | |
479 | ||
480 | Returns the key as an C<SV*>. Will create and return a temporary mortal | |
481 | C<SV*> if the hash entry contains only a C<char*> key. | |
482 | ||
483 | SV* HeSVKEY_force(HE* he) | |
484 | ||
485 | =item HeSVKEY_set | |
486 | ||
487 | Sets the key to a given C<SV*>, taking care to set the appropriate flags to | |
488 | indicate the presence of an C<SV*> key, and returns the same | |
489 | C<SV*>. | |
490 | ||
491 | SV* HeSVKEY_set(HE* he, SV* sv) | |
492 | ||
493 | =item HeVAL | |
494 | ||
495 | Returns the value slot (type C<SV*>) stored in the hash entry. | |
496 | ||
497 | SV* HeVAL(HE* he) | |
498 | ||
499 | =item HvNAME | |
500 | ||
501 | Returns the package name of a stash. See C<SvSTASH>, C<CvSTASH>. | |
502 | ||
503 | char* HvNAME(HV* stash) | |
504 | ||
505 | =item hv_clear | |
506 | ||
507 | Clears a hash, making it empty. | |
508 | ||
509 | void hv_clear(HV* tb) | |
510 | ||
511 | =item hv_delete | |
512 | ||
513 | Deletes a key/value pair in the hash. The value SV is removed from the | |
514 | hash and returned to the caller. The C<klen> is the length of the key. | |
515 | The C<flags> value will normally be zero; if set to G_DISCARD then NULL | |
516 | will be returned. | |
517 | ||
518 | SV* hv_delete(HV* tb, const char* key, U32 klen, I32 flags) | |
519 | ||
520 | =item hv_delete_ent | |
521 | ||
522 | Deletes a key/value pair in the hash. The value SV is removed from the | |
523 | hash and returned to the caller. The C<flags> value will normally be zero; | |
524 | if set to G_DISCARD then NULL will be returned. C<hash> can be a valid | |
525 | precomputed hash value, or 0 to ask for it to be computed. | |
526 | ||
527 | SV* hv_delete_ent(HV* tb, SV* key, I32 flags, U32 hash) | |
528 | ||
529 | =item hv_exists | |
530 | ||
531 | Returns a boolean indicating whether the specified hash key exists. The | |
532 | C<klen> is the length of the key. | |
533 | ||
534 | bool hv_exists(HV* tb, const char* key, U32 klen) | |
535 | ||
536 | =item hv_exists_ent | |
537 | ||
538 | Returns a boolean indicating whether the specified hash key exists. C<hash> | |
539 | can be a valid precomputed hash value, or 0 to ask for it to be | |
540 | computed. | |
541 | ||
542 | bool hv_exists_ent(HV* tb, SV* key, U32 hash) | |
543 | ||
544 | =item hv_fetch | |
545 | ||
546 | Returns the SV which corresponds to the specified key in the hash. The | |
547 | C<klen> is the length of the key. If C<lval> is set then the fetch will be | |
548 | part of a store. Check that the return value is non-null before | |
549 | dereferencing it to a C<SV*>. | |
550 | ||
96f1132b | 551 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
552 | information on how to use this function on tied hashes. |
553 | ||
554 | SV** hv_fetch(HV* tb, const char* key, U32 klen, I32 lval) | |
555 | ||
556 | =item hv_fetch_ent | |
557 | ||
558 | Returns the hash entry which corresponds to the specified key in the hash. | |
559 | C<hash> must be a valid precomputed hash number for the given C<key>, or 0 | |
560 | if you want the function to compute it. IF C<lval> is set then the fetch | |
561 | will be part of a store. Make sure the return value is non-null before | |
562 | accessing it. The return value when C<tb> is a tied hash is a pointer to a | |
563 | static location, so be sure to make a copy of the structure if you need to | |
564 | store it somewhere. | |
565 | ||
96f1132b | 566 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
567 | information on how to use this function on tied hashes. |
568 | ||
569 | HE* hv_fetch_ent(HV* tb, SV* key, I32 lval, U32 hash) | |
570 | ||
571 | =item hv_iterinit | |
572 | ||
573 | Prepares a starting point to traverse a hash table. Returns the number of | |
574 | keys in the hash (i.e. the same as C<HvKEYS(tb)>). The return value is | |
575 | currently only meaningful for hashes without tie magic. | |
576 | ||
577 | NOTE: Before version 5.004_65, C<hv_iterinit> used to return the number of | |
578 | hash buckets that happen to be in use. If you still need that esoteric | |
579 | value, you can get it through the macro C<HvFILL(tb)>. | |
580 | ||
581 | I32 hv_iterinit(HV* tb) | |
582 | ||
583 | =item hv_iterkey | |
584 | ||
585 | Returns the key from the current position of the hash iterator. See | |
586 | C<hv_iterinit>. | |
587 | ||
588 | char* hv_iterkey(HE* entry, I32* retlen) | |
589 | ||
590 | =item hv_iterkeysv | |
591 | ||
592 | Returns the key as an C<SV*> from the current position of the hash | |
593 | iterator. The return value will always be a mortal copy of the key. Also | |
594 | see C<hv_iterinit>. | |
595 | ||
596 | SV* hv_iterkeysv(HE* entry) | |
597 | ||
598 | =item hv_iternext | |
599 | ||
600 | Returns entries from a hash iterator. See C<hv_iterinit>. | |
601 | ||
602 | HE* hv_iternext(HV* tb) | |
603 | ||
604 | =item hv_iternextsv | |
605 | ||
606 | Performs an C<hv_iternext>, C<hv_iterkey>, and C<hv_iterval> in one | |
607 | operation. | |
608 | ||
609 | SV* hv_iternextsv(HV* hv, char** key, I32* retlen) | |
610 | ||
611 | =item hv_iterval | |
612 | ||
613 | Returns the value from the current position of the hash iterator. See | |
614 | C<hv_iterkey>. | |
615 | ||
616 | SV* hv_iterval(HV* tb, HE* entry) | |
617 | ||
618 | =item hv_magic | |
619 | ||
620 | Adds magic to a hash. See C<sv_magic>. | |
621 | ||
622 | void hv_magic(HV* hv, GV* gv, int how) | |
623 | ||
624 | =item hv_store | |
625 | ||
626 | Stores an SV in a hash. The hash key is specified as C<key> and C<klen> is | |
627 | the length of the key. The C<hash> parameter is the precomputed hash | |
628 | value; if it is zero then Perl will compute it. The return value will be | |
629 | NULL if the operation failed or if the value did not need to be actually | |
630 | stored within the hash (as in the case of tied hashes). Otherwise it can | |
631 | be dereferenced to get the original C<SV*>. Note that the caller is | |
632 | responsible for suitably incrementing the reference count of C<val> before | |
633 | the call, and decrementing it if the function returned NULL. | |
634 | ||
96f1132b | 635 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
636 | information on how to use this function on tied hashes. |
637 | ||
638 | SV** hv_store(HV* tb, const char* key, U32 klen, SV* val, U32 hash) | |
639 | ||
640 | =item hv_store_ent | |
641 | ||
642 | Stores C<val> in a hash. The hash key is specified as C<key>. The C<hash> | |
643 | parameter is the precomputed hash value; if it is zero then Perl will | |
644 | compute it. The return value is the new hash entry so created. It will be | |
645 | NULL if the operation failed or if the value did not need to be actually | |
646 | stored within the hash (as in the case of tied hashes). Otherwise the | |
647 | contents of the return value can be accessed using the C<He???> macros | |
648 | described here. Note that the caller is responsible for suitably | |
649 | incrementing the reference count of C<val> before the call, and | |
650 | decrementing it if the function returned NULL. | |
651 | ||
96f1132b | 652 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more |
954c1994 GS |
653 | information on how to use this function on tied hashes. |
654 | ||
655 | HE* hv_store_ent(HV* tb, SV* key, SV* val, U32 hash) | |
656 | ||
657 | =item hv_undef | |
658 | ||
659 | Undefines the hash. | |
660 | ||
661 | void hv_undef(HV* tb) | |
662 | ||
663 | =item isALNUM | |
664 | ||
665 | Returns a boolean indicating whether the C C<char> is an ascii alphanumeric | |
666 | character or digit. | |
667 | ||
668 | bool isALNUM(char ch) | |
669 | ||
670 | =item isALPHA | |
671 | ||
672 | Returns a boolean indicating whether the C C<char> is an ascii alphabetic | |
673 | character. | |
674 | ||
675 | bool isALPHA(char ch) | |
676 | ||
677 | =item isDIGIT | |
678 | ||
679 | Returns a boolean indicating whether the C C<char> is an ascii | |
680 | digit. | |
681 | ||
682 | bool isDIGIT(char ch) | |
683 | ||
684 | =item isLOWER | |
685 | ||
686 | Returns a boolean indicating whether the C C<char> is a lowercase | |
687 | character. | |
688 | ||
689 | bool isLOWER(char ch) | |
690 | ||
691 | =item isSPACE | |
692 | ||
693 | Returns a boolean indicating whether the C C<char> is whitespace. | |
694 | ||
695 | bool isSPACE(char ch) | |
696 | ||
697 | =item isUPPER | |
698 | ||
699 | Returns a boolean indicating whether the C C<char> is an uppercase | |
700 | character. | |
701 | ||
702 | bool isUPPER(char ch) | |
703 | ||
704 | =item items | |
705 | ||
706 | Variable which is setup by C<xsubpp> to indicate the number of | |
707 | items on the stack. See L<perlxs/"Variable-length Parameter Lists">. | |
708 | ||
709 | I32 items | |
710 | ||
711 | =item ix | |
712 | ||
713 | Variable which is setup by C<xsubpp> to indicate which of an | |
714 | XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">. | |
715 | ||
716 | I32 ix | |
717 | ||
718 | =item LEAVE | |
719 | ||
720 | Closing bracket on a callback. See C<ENTER> and L<perlcall>. | |
721 | ||
722 | LEAVE; | |
723 | ||
724 | =item looks_like_number | |
725 | ||
726 | Test if an the content of an SV looks like a number (or is a | |
727 | number). | |
728 | ||
729 | I32 looks_like_number(SV* sv) | |
730 | ||
731 | =item MARK | |
732 | ||
733 | Stack marker variable for the XSUB. See C<dMARK>. | |
734 | ||
735 | =item mg_clear | |
736 | ||
737 | Clear something magical that the SV represents. See C<sv_magic>. | |
738 | ||
739 | int mg_clear(SV* sv) | |
740 | ||
741 | =item mg_copy | |
742 | ||
743 | Copies the magic from one SV to another. See C<sv_magic>. | |
744 | ||
745 | int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen) | |
746 | ||
747 | =item mg_find | |
748 | ||
749 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
750 | ||
751 | MAGIC* mg_find(SV* sv, int type) | |
752 | ||
753 | =item mg_free | |
754 | ||
755 | Free any magic storage used by the SV. See C<sv_magic>. | |
756 | ||
757 | int mg_free(SV* sv) | |
758 | ||
759 | =item mg_get | |
760 | ||
761 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
762 | ||
763 | int mg_get(SV* sv) | |
764 | ||
765 | =item mg_length | |
766 | ||
767 | Report on the SV's length. See C<sv_magic>. | |
768 | ||
769 | U32 mg_length(SV* sv) | |
770 | ||
771 | =item mg_magical | |
772 | ||
773 | Turns on the magical status of an SV. See C<sv_magic>. | |
774 | ||
775 | void mg_magical(SV* sv) | |
776 | ||
777 | =item mg_set | |
778 | ||
779 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
780 | ||
781 | int mg_set(SV* sv) | |
782 | ||
783 | =item Move | |
784 | ||
785 | The XSUB-writer's interface to the C C<memmove> function. The C<src> is the | |
786 | source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is | |
787 | the type. Can do overlapping moves. See also C<Copy>. | |
788 | ||
789 | void Move(void* src, void* dest, int nitems, type) | |
790 | ||
791 | =item New | |
792 | ||
793 | The XSUB-writer's interface to the C C<malloc> function. | |
794 | ||
795 | void New(int id, void* ptr, int nitems, type) | |
796 | ||
797 | =item newAV | |
798 | ||
799 | Creates a new AV. The reference count is set to 1. | |
800 | ||
801 | AV* newAV() | |
802 | ||
803 | =item Newc | |
804 | ||
805 | The XSUB-writer's interface to the C C<malloc> function, with | |
806 | cast. | |
807 | ||
808 | void Newc(int id, void* ptr, int nitems, type, cast) | |
809 | ||
810 | =item newCONSTSUB | |
811 | ||
812 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
813 | eligible for inlining at compile-time. | |
814 | ||
815 | void newCONSTSUB(HV* stash, char* name, SV* sv) | |
816 | ||
817 | =item newHV | |
818 | ||
819 | Creates a new HV. The reference count is set to 1. | |
820 | ||
821 | HV* newHV() | |
822 | ||
823 | =item newRV_inc | |
824 | ||
825 | Creates an RV wrapper for an SV. The reference count for the original SV is | |
826 | incremented. | |
827 | ||
828 | SV* newRV_inc(SV* sv) | |
829 | ||
830 | =item newRV_noinc | |
831 | ||
832 | Creates an RV wrapper for an SV. The reference count for the original | |
833 | SV is B<not> incremented. | |
834 | ||
835 | SV* newRV_noinc(SV *sv) | |
836 | ||
837 | =item NEWSV | |
838 | ||
839 | Creates a new SV. A non-zero C<len> parameter indicates the number of | |
840 | bytes of preallocated string space the SV should have. An extra byte for a | |
841 | tailing NUL is also reserved. (SvPOK is not set for the SV even if string | |
842 | space is allocated.) The reference count for the new SV is set to 1. | |
843 | C<id> is an integer id between 0 and 1299 (used to identify leaks). | |
844 | ||
845 | SV* NEWSV(int id, STRLEN len) | |
846 | ||
847 | =item newSViv | |
848 | ||
849 | Creates a new SV and copies an integer into it. The reference count for the | |
850 | SV is set to 1. | |
851 | ||
852 | SV* newSViv(IV i) | |
853 | ||
854 | =item newSVnv | |
855 | ||
856 | Creates a new SV and copies a floating point value into it. | |
857 | The reference count for the SV is set to 1. | |
858 | ||
859 | SV* newSVnv(NV n) | |
860 | ||
861 | =item newSVpv | |
862 | ||
863 | Creates a new SV and copies a string into it. The reference count for the | |
864 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
865 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
866 | ||
867 | SV* newSVpv(const char* s, STRLEN len) | |
868 | ||
869 | =item newSVpvf | |
870 | ||
871 | Creates a new SV an initialize it with the string formatted like | |
872 | C<sprintf>. | |
873 | ||
874 | SV* newSVpvf(const char* pat, ...) | |
875 | ||
876 | =item newSVpvn | |
877 | ||
878 | Creates a new SV and copies a string into it. The reference count for the | |
879 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length | |
880 | string. You are responsible for ensuring that the source string is at least | |
881 | C<len> bytes long. | |
882 | ||
883 | SV* newSVpvn(const char* s, STRLEN len) | |
884 | ||
885 | =item newSVrv | |
886 | ||
887 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
888 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
889 | be blessed in the specified package. The new SV is returned and its | |
890 | reference count is 1. | |
891 | ||
892 | SV* newSVrv(SV* rv, const char* classname) | |
893 | ||
894 | =item newSVsv | |
895 | ||
896 | Creates a new SV which is an exact duplicate of the original SV. | |
897 | ||
898 | SV* newSVsv(SV* old) | |
899 | ||
900 | =item newXS | |
901 | ||
902 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
903 | ||
904 | =item newXSproto | |
905 | ||
906 | Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to | |
907 | the subs. | |
908 | ||
909 | =item Newz | |
910 | ||
911 | The XSUB-writer's interface to the C C<malloc> function. The allocated | |
912 | memory is zeroed with C<memzero>. | |
913 | ||
914 | void Newz(int id, void* ptr, int nitems, type) | |
915 | ||
916 | =item Nullav | |
917 | ||
918 | Null AV pointer. | |
919 | ||
920 | =item Nullch | |
921 | ||
922 | Null character pointer. | |
923 | ||
924 | =item Nullcv | |
925 | ||
926 | Null CV pointer. | |
927 | ||
928 | =item Nullhv | |
929 | ||
930 | Null HV pointer. | |
931 | ||
932 | =item Nullsv | |
933 | ||
934 | Null SV pointer. | |
935 | ||
936 | =item ORIGMARK | |
937 | ||
938 | The original stack mark for the XSUB. See C<dORIGMARK>. | |
939 | ||
940 | =item perl_alloc | |
941 | ||
942 | Allocates a new Perl interpreter. See L<perlembed>. | |
943 | ||
944 | PerlInterpreter* perl_alloc() | |
945 | ||
946 | =item perl_construct | |
947 | ||
948 | Initializes a new Perl interpreter. See L<perlembed>. | |
949 | ||
950 | void perl_construct(PerlInterpreter* interp) | |
951 | ||
952 | =item perl_destruct | |
953 | ||
954 | Shuts down a Perl interpreter. See L<perlembed>. | |
955 | ||
956 | void perl_destruct(PerlInterpreter* interp) | |
957 | ||
958 | =item perl_free | |
959 | ||
960 | Releases a Perl interpreter. See L<perlembed>. | |
961 | ||
962 | void perl_free(PerlInterpreter* interp) | |
963 | ||
964 | =item perl_parse | |
965 | ||
966 | Tells a Perl interpreter to parse a Perl script. See L<perlembed>. | |
967 | ||
968 | int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env) | |
969 | ||
970 | =item perl_run | |
971 | ||
972 | Tells a Perl interpreter to run. See L<perlembed>. | |
973 | ||
974 | int perl_run(PerlInterpreter* interp) | |
975 | ||
976 | =item PL_DBsingle | |
977 | ||
978 | When Perl is run in debugging mode, with the B<-d> switch, this SV is a | |
979 | boolean which indicates whether subs are being single-stepped. | |
980 | Single-stepping is automatically turned on after every step. This is the C | |
981 | variable which corresponds to Perl's $DB::single variable. See | |
982 | C<PL_DBsub>. | |
983 | ||
984 | SV * PL_DBsingle | |
985 | ||
986 | =item PL_DBsub | |
987 | ||
988 | When Perl is run in debugging mode, with the B<-d> switch, this GV contains | |
989 | the SV which holds the name of the sub being debugged. This is the C | |
990 | variable which corresponds to Perl's $DB::sub variable. See | |
991 | C<PL_DBsingle>. | |
992 | ||
993 | GV * PL_DBsub | |
994 | ||
995 | =item PL_DBtrace | |
996 | ||
997 | Trace variable used when Perl is run in debugging mode, with the B<-d> | |
998 | switch. This is the C variable which corresponds to Perl's $DB::trace | |
999 | variable. See C<PL_DBsingle>. | |
1000 | ||
1001 | SV * PL_DBtrace | |
1002 | ||
1003 | =item PL_dowarn | |
1004 | ||
1005 | The C variable which corresponds to Perl's $^W warning variable. | |
1006 | ||
1007 | bool PL_dowarn | |
1008 | ||
1009 | =item PL_modglobal | |
1010 | ||
1011 | C<PL_modglobal> is a general purpose, interpreter global HV for use by | |
1012 | extensions that need to keep information on a per-interpreter basis. | |
1013 | In a pinch, it can also be used as a symbol table for extensions | |
1014 | to share data among each other. It is a good idea to use keys | |
1015 | prefixed by the package name of the extension that owns the data. | |
1016 | ||
1017 | HV* PL_modglobal | |
1018 | ||
1019 | =item PL_na | |
1020 | ||
1021 | A convenience variable which is typically used with C<SvPV> when one | |
1022 | doesn't care about the length of the string. It is usually more efficient | |
1023 | to either declare a local variable and use that instead or to use the | |
1024 | C<SvPV_nolen> macro. | |
1025 | ||
1026 | STRLEN PL_na | |
1027 | ||
1028 | =item PL_sv_no | |
1029 | ||
1030 | This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as | |
1031 | C<&PL_sv_no>. | |
1032 | ||
1033 | SV PL_sv_no | |
1034 | ||
1035 | =item PL_sv_undef | |
1036 | ||
1037 | This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>. | |
1038 | ||
1039 | SV PL_sv_undef | |
1040 | ||
1041 | =item PL_sv_yes | |
1042 | ||
1043 | This is the C<true> SV. See C<PL_sv_no>. Always refer to this as | |
1044 | C<&PL_sv_yes>. | |
1045 | ||
1046 | SV PL_sv_yes | |
1047 | ||
1048 | =item POPi | |
1049 | ||
1050 | Pops an integer off the stack. | |
1051 | ||
1052 | IV POPi | |
1053 | ||
1054 | =item POPl | |
1055 | ||
1056 | Pops a long off the stack. | |
1057 | ||
1058 | long POPl | |
1059 | ||
1060 | =item POPn | |
1061 | ||
1062 | Pops a double off the stack. | |
1063 | ||
1064 | NV POPn | |
1065 | ||
1066 | =item POPp | |
1067 | ||
1068 | Pops a string off the stack. | |
1069 | ||
1070 | char* POPp | |
1071 | ||
1072 | =item POPs | |
1073 | ||
1074 | Pops an SV off the stack. | |
1075 | ||
1076 | SV* POPs | |
1077 | ||
1078 | =item PUSHi | |
1079 | ||
1080 | Push an integer onto the stack. The stack must have room for this element. | |
1081 | Handles 'set' magic. See C<XPUSHi>. | |
1082 | ||
1083 | void PUSHi(IV iv) | |
1084 | ||
1085 | =item PUSHMARK | |
1086 | ||
1087 | Opening bracket for arguments on a callback. See C<PUTBACK> and | |
1088 | L<perlcall>. | |
1089 | ||
1090 | PUSHMARK; | |
1091 | ||
1092 | =item PUSHn | |
1093 | ||
1094 | Push a double onto the stack. The stack must have room for this element. | |
1095 | Handles 'set' magic. See C<XPUSHn>. | |
1096 | ||
1097 | void PUSHn(NV nv) | |
1098 | ||
1099 | =item PUSHp | |
1100 | ||
1101 | Push a string onto the stack. The stack must have room for this element. | |
1102 | The C<len> indicates the length of the string. Handles 'set' magic. See | |
1103 | C<XPUSHp>. | |
1104 | ||
1105 | void PUSHp(char* str, STRLEN len) | |
1106 | ||
1107 | =item PUSHs | |
1108 | ||
1109 | Push an SV onto the stack. The stack must have room for this element. | |
1110 | Does not handle 'set' magic. See C<XPUSHs>. | |
1111 | ||
1112 | void PUSHs(SV* sv) | |
1113 | ||
1114 | =item PUSHu | |
1115 | ||
1116 | Push an unsigned integer onto the stack. The stack must have room for this | |
1117 | element. See C<XPUSHu>. | |
1118 | ||
1119 | void PUSHu(UV uv) | |
1120 | ||
1121 | =item PUTBACK | |
1122 | ||
1123 | Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. | |
1124 | See C<PUSHMARK> and L<perlcall> for other uses. | |
1125 | ||
1126 | PUTBACK; | |
1127 | ||
1128 | =item Renew | |
1129 | ||
1130 | The XSUB-writer's interface to the C C<realloc> function. | |
1131 | ||
1132 | void Renew(void* ptr, int nitems, type) | |
1133 | ||
1134 | =item Renewc | |
1135 | ||
1136 | The XSUB-writer's interface to the C C<realloc> function, with | |
1137 | cast. | |
1138 | ||
1139 | void Renewc(void* ptr, int nitems, type, cast) | |
1140 | ||
1141 | =item require_pv | |
1142 | ||
1143 | Tells Perl to C<require> a module. | |
1144 | ||
1145 | NOTE: the perl_ form of this function is deprecated. | |
1146 | ||
1147 | void require_pv(const char* pv) | |
1148 | ||
1149 | =item RETVAL | |
1150 | ||
1151 | Variable which is setup by C<xsubpp> to hold the return value for an | |
1152 | XSUB. This is always the proper type for the XSUB. See | |
1153 | L<perlxs/"The RETVAL Variable">. | |
1154 | ||
1155 | (whatever) RETVAL | |
1156 | ||
1157 | =item Safefree | |
1158 | ||
1159 | The XSUB-writer's interface to the C C<free> function. | |
1160 | ||
1161 | void Safefree(void* src, void* dest, int nitems, type) | |
1162 | ||
1163 | =item savepv | |
1164 | ||
1165 | Copy a string to a safe spot. This does not use an SV. | |
1166 | ||
1167 | char* savepv(const char* sv) | |
1168 | ||
1169 | =item savepvn | |
1170 | ||
1171 | Copy a string to a safe spot. The C<len> indicates number of bytes to | |
1172 | copy. This does not use an SV. | |
1173 | ||
1174 | char* savepvn(const char* sv, I32 len) | |
1175 | ||
1176 | =item SAVETMPS | |
1177 | ||
1178 | Opening bracket for temporaries on a callback. See C<FREETMPS> and | |
1179 | L<perlcall>. | |
1180 | ||
1181 | SAVETMPS; | |
1182 | ||
1183 | =item SP | |
1184 | ||
1185 | Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and | |
1186 | C<SPAGAIN>. | |
1187 | ||
1188 | =item SPAGAIN | |
1189 | ||
1190 | Refetch the stack pointer. Used after a callback. See L<perlcall>. | |
1191 | ||
1192 | SPAGAIN; | |
1193 | ||
1194 | =item ST | |
1195 | ||
1196 | Used to access elements on the XSUB's stack. | |
1197 | ||
1198 | SV* ST(int ix) | |
1199 | ||
1200 | =item strEQ | |
1201 | ||
1202 | Test two strings to see if they are equal. Returns true or false. | |
1203 | ||
1204 | bool strEQ(char* s1, char* s2) | |
1205 | ||
1206 | =item strGE | |
1207 | ||
1208 | Test two strings to see if the first, C<s1>, is greater than or equal to | |
1209 | the second, C<s2>. Returns true or false. | |
1210 | ||
1211 | bool strGE(char* s1, char* s2) | |
1212 | ||
1213 | =item strGT | |
1214 | ||
1215 | Test two strings to see if the first, C<s1>, is greater than the second, | |
1216 | C<s2>. Returns true or false. | |
1217 | ||
1218 | bool strGT(char* s1, char* s2) | |
1219 | ||
1220 | =item strLE | |
1221 | ||
1222 | Test two strings to see if the first, C<s1>, is less than or equal to the | |
1223 | second, C<s2>. Returns true or false. | |
1224 | ||
1225 | bool strLE(char* s1, char* s2) | |
1226 | ||
1227 | =item strLT | |
1228 | ||
1229 | Test two strings to see if the first, C<s1>, is less than the second, | |
1230 | C<s2>. Returns true or false. | |
1231 | ||
1232 | bool strLT(char* s1, char* s2) | |
1233 | ||
1234 | =item strNE | |
1235 | ||
1236 | Test two strings to see if they are different. Returns true or | |
1237 | false. | |
1238 | ||
1239 | bool strNE(char* s1, char* s2) | |
1240 | ||
1241 | =item strnEQ | |
1242 | ||
1243 | Test two strings to see if they are equal. The C<len> parameter indicates | |
1244 | the number of bytes to compare. Returns true or false. (A wrapper for | |
1245 | C<strncmp>). | |
1246 | ||
1247 | bool strnEQ(char* s1, char* s2, STRLEN len) | |
1248 | ||
1249 | =item strnNE | |
1250 | ||
1251 | Test two strings to see if they are different. The C<len> parameter | |
1252 | indicates the number of bytes to compare. Returns true or false. (A | |
1253 | wrapper for C<strncmp>). | |
1254 | ||
1255 | bool strnNE(char* s1, char* s2, STRLEN len) | |
1256 | ||
1257 | =item StructCopy | |
1258 | ||
1259 | This is an architecture-independant macro to copy one structure to another. | |
1260 | ||
1261 | void StructCopy(type src, type dest, type) | |
1262 | ||
1263 | =item SvCUR | |
1264 | ||
1265 | Returns the length of the string which is in the SV. See C<SvLEN>. | |
1266 | ||
1267 | STRLEN SvCUR(SV* sv) | |
1268 | ||
1269 | =item SvCUR_set | |
1270 | ||
1271 | Set the length of the string which is in the SV. See C<SvCUR>. | |
1272 | ||
1273 | void SvCUR_set(SV* sv, STRLEN len) | |
1274 | ||
1275 | =item SvEND | |
1276 | ||
1277 | Returns a pointer to the last character in the string which is in the SV. | |
1278 | See C<SvCUR>. Access the character as *(SvEND(sv)). | |
1279 | ||
1280 | char* SvEND(SV* sv) | |
1281 | ||
1282 | =item SvGETMAGIC | |
1283 | ||
1284 | Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its | |
1285 | argument more than once. | |
1286 | ||
1287 | void SvGETMAGIC(SV* sv) | |
1288 | ||
1289 | =item SvGROW | |
1290 | ||
1291 | Expands the character buffer in the SV so that it has room for the | |
1292 | indicated number of bytes (remember to reserve space for an extra trailing | |
1293 | NUL character). Calls C<sv_grow> to perform the expansion if necessary. | |
1294 | Returns a pointer to the character buffer. | |
1295 | ||
1296 | void SvGROW(SV* sv, STRLEN len) | |
1297 | ||
1298 | =item SvIOK | |
1299 | ||
1300 | Returns a boolean indicating whether the SV contains an integer. | |
1301 | ||
1302 | bool SvIOK(SV* sv) | |
1303 | ||
1304 | =item SvIOKp | |
1305 | ||
1306 | Returns a boolean indicating whether the SV contains an integer. Checks | |
1307 | the B<private> setting. Use C<SvIOK>. | |
1308 | ||
1309 | bool SvIOKp(SV* sv) | |
1310 | ||
1311 | =item SvIOK_off | |
1312 | ||
1313 | Unsets the IV status of an SV. | |
1314 | ||
1315 | void SvIOK_off(SV* sv) | |
1316 | ||
1317 | =item SvIOK_on | |
1318 | ||
1319 | Tells an SV that it is an integer. | |
1320 | ||
1321 | void SvIOK_on(SV* sv) | |
1322 | ||
1323 | =item SvIOK_only | |
1324 | ||
1325 | Tells an SV that it is an integer and disables all other OK bits. | |
1326 | ||
1327 | void SvIOK_only(SV* sv) | |
1328 | ||
1329 | =item SvIV | |
1330 | ||
1331 | Coerces the given SV to an integer and returns it. | |
1332 | ||
1333 | IV SvIV(SV* sv) | |
1334 | ||
1335 | =item SvIVX | |
1336 | ||
1337 | Returns the integer which is stored in the SV, assuming SvIOK is | |
1338 | true. | |
1339 | ||
1340 | IV SvIVX(SV* sv) | |
1341 | ||
1342 | =item SvLEN | |
1343 | ||
1344 | Returns the size of the string buffer in the SV. See C<SvCUR>. | |
1345 | ||
1346 | STRLEN SvLEN(SV* sv) | |
1347 | ||
1348 | =item SvNIOK | |
1349 | ||
1350 | Returns a boolean indicating whether the SV contains a number, integer or | |
1351 | double. | |
1352 | ||
1353 | bool SvNIOK(SV* sv) | |
1354 | ||
1355 | =item SvNIOKp | |
1356 | ||
1357 | Returns a boolean indicating whether the SV contains a number, integer or | |
1358 | double. Checks the B<private> setting. Use C<SvNIOK>. | |
1359 | ||
1360 | bool SvNIOKp(SV* sv) | |
1361 | ||
1362 | =item SvNIOK_off | |
1363 | ||
1364 | Unsets the NV/IV status of an SV. | |
1365 | ||
1366 | void SvNIOK_off(SV* sv) | |
1367 | ||
1368 | =item SvNOK | |
1369 | ||
1370 | Returns a boolean indicating whether the SV contains a double. | |
1371 | ||
1372 | bool SvNOK(SV* sv) | |
1373 | ||
1374 | =item SvNOKp | |
1375 | ||
1376 | Returns a boolean indicating whether the SV contains a double. Checks the | |
1377 | B<private> setting. Use C<SvNOK>. | |
1378 | ||
1379 | bool SvNOKp(SV* sv) | |
1380 | ||
1381 | =item SvNOK_off | |
1382 | ||
1383 | Unsets the NV status of an SV. | |
1384 | ||
1385 | void SvNOK_off(SV* sv) | |
1386 | ||
1387 | =item SvNOK_on | |
1388 | ||
1389 | Tells an SV that it is a double. | |
1390 | ||
1391 | void SvNOK_on(SV* sv) | |
1392 | ||
1393 | =item SvNOK_only | |
1394 | ||
1395 | Tells an SV that it is a double and disables all other OK bits. | |
1396 | ||
1397 | void SvNOK_only(SV* sv) | |
1398 | ||
1399 | =item SvNV | |
1400 | ||
1401 | Coerce the given SV to a double and return it. | |
1402 | ||
1403 | NV SvNV(SV* sv) | |
1404 | ||
1405 | =item SvNVX | |
1406 | ||
1407 | Returns the double which is stored in the SV, assuming SvNOK is | |
1408 | true. | |
1409 | ||
1410 | NV SvNVX(SV* sv) | |
1411 | ||
1412 | =item SvOK | |
1413 | ||
1414 | Returns a boolean indicating whether the value is an SV. | |
1415 | ||
1416 | bool SvOK(SV* sv) | |
1417 | ||
1418 | =item SvOOK | |
1419 | ||
1420 | Returns a boolean indicating whether the SvIVX is a valid offset value for | |
1421 | the SvPVX. This hack is used internally to speed up removal of characters | |
1422 | from the beginning of a SvPV. When SvOOK is true, then the start of the | |
1423 | allocated string buffer is really (SvPVX - SvIVX). | |
1424 | ||
1425 | bool SvOOK(SV* sv) | |
1426 | ||
1427 | =item SvPOK | |
1428 | ||
1429 | Returns a boolean indicating whether the SV contains a character | |
1430 | string. | |
1431 | ||
1432 | bool SvPOK(SV* sv) | |
1433 | ||
1434 | =item SvPOKp | |
1435 | ||
1436 | Returns a boolean indicating whether the SV contains a character string. | |
1437 | Checks the B<private> setting. Use C<SvPOK>. | |
1438 | ||
1439 | bool SvPOKp(SV* sv) | |
1440 | ||
1441 | =item SvPOK_off | |
1442 | ||
1443 | Unsets the PV status of an SV. | |
1444 | ||
1445 | void SvPOK_off(SV* sv) | |
1446 | ||
1447 | =item SvPOK_on | |
1448 | ||
1449 | Tells an SV that it is a string. | |
1450 | ||
1451 | void SvPOK_on(SV* sv) | |
1452 | ||
1453 | =item SvPOK_only | |
1454 | ||
1455 | Tells an SV that it is a string and disables all other OK bits. | |
1456 | ||
1457 | void SvPOK_only(SV* sv) | |
1458 | ||
1459 | =item SvPV | |
1460 | ||
1461 | Returns a pointer to the string in the SV, or a stringified form of the SV | |
1462 | if the SV does not contain a string. Handles 'get' magic. | |
1463 | ||
1464 | char* SvPV(SV* sv, STRLEN len) | |
1465 | ||
1466 | =item SvPVX | |
1467 | ||
1468 | Returns a pointer to the string in the SV. The SV must contain a | |
1469 | string. | |
1470 | ||
1471 | char* SvPVX(SV* sv) | |
1472 | ||
1473 | =item SvPV_force | |
1474 | ||
1475 | Like <SvPV> but will force the SV into becoming a string (SvPOK). You want | |
1476 | force if you are going to update the SvPVX directly. | |
1477 | ||
1478 | char* SvPV_force(SV* sv, STRLEN len) | |
1479 | ||
1480 | =item SvPV_nolen | |
1481 | ||
1482 | Returns a pointer to the string in the SV, or a stringified form of the SV | |
1483 | if the SV does not contain a string. Handles 'get' magic. | |
1484 | ||
1485 | char* SvPV_nolen(SV* sv) | |
1486 | ||
1487 | =item SvREFCNT | |
1488 | ||
1489 | Returns the value of the object's reference count. | |
1490 | ||
1491 | U32 SvREFCNT(SV* sv) | |
1492 | ||
1493 | =item SvREFCNT_dec | |
1494 | ||
1495 | Decrements the reference count of the given SV. | |
1496 | ||
1497 | void SvREFCNT_dec(SV* sv) | |
1498 | ||
1499 | =item SvREFCNT_inc | |
1500 | ||
1501 | Increments the reference count of the given SV. | |
1502 | ||
1503 | SV* SvREFCNT_inc(SV* sv) | |
1504 | ||
1505 | =item SvROK | |
1506 | ||
1507 | Tests if the SV is an RV. | |
1508 | ||
1509 | bool SvROK(SV* sv) | |
1510 | ||
1511 | =item SvROK_off | |
1512 | ||
1513 | Unsets the RV status of an SV. | |
1514 | ||
1515 | void SvROK_off(SV* sv) | |
1516 | ||
1517 | =item SvROK_on | |
1518 | ||
1519 | Tells an SV that it is an RV. | |
1520 | ||
1521 | void SvROK_on(SV* sv) | |
1522 | ||
1523 | =item SvRV | |
1524 | ||
1525 | Dereferences an RV to return the SV. | |
1526 | ||
1527 | SV* SvRV(SV* sv) | |
1528 | ||
1529 | =item SvSETMAGIC | |
1530 | ||
1531 | Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its | |
1532 | argument more than once. | |
1533 | ||
1534 | void SvSETMAGIC(SV* sv) | |
1535 | ||
1536 | =item SvSetSV | |
1537 | ||
1538 | Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments | |
1539 | more than once. | |
1540 | ||
1541 | void SvSetSV(SV* dsb, SV* ssv) | |
1542 | ||
1543 | =item SvSetSV_nosteal | |
1544 | ||
1545 | Calls a non-destructive version of C<sv_setsv> if dsv is not the same as | |
1546 | ssv. May evaluate arguments more than once. | |
1547 | ||
1548 | void SvSetSV_nosteal(SV* dsv, SV* ssv) | |
1549 | ||
1550 | =item SvSTASH | |
1551 | ||
1552 | Returns the stash of the SV. | |
1553 | ||
1554 | HV* SvSTASH(SV* sv) | |
1555 | ||
1556 | =item SvTAINT | |
1557 | ||
1558 | Taints an SV if tainting is enabled | |
1559 | ||
1560 | void SvTAINT(SV* sv) | |
1561 | ||
1562 | =item SvTAINTED | |
1563 | ||
1564 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if | |
1565 | not. | |
1566 | ||
1567 | bool SvTAINTED(SV* sv) | |
1568 | ||
1569 | =item SvTAINTED_off | |
1570 | ||
1571 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits | |
1572 | some of Perl's fundamental security features. XS module authors should not | |
1573 | use this function unless they fully understand all the implications of | |
1574 | unconditionally untainting the value. Untainting should be done in the | |
1575 | standard perl fashion, via a carefully crafted regexp, rather than directly | |
1576 | untainting variables. | |
1577 | ||
1578 | void SvTAINTED_off(SV* sv) | |
1579 | ||
1580 | =item SvTAINTED_on | |
1581 | ||
1582 | Marks an SV as tainted. | |
1583 | ||
1584 | void SvTAINTED_on(SV* sv) | |
1585 | ||
1586 | =item SvTRUE | |
1587 | ||
1588 | Returns a boolean indicating whether Perl would evaluate the SV as true or | |
1589 | false, defined or undefined. Does not handle 'get' magic. | |
1590 | ||
1591 | bool SvTRUE(SV* sv) | |
1592 | ||
1593 | =item SvTYPE | |
1594 | ||
1595 | Returns the type of the SV. See C<svtype>. | |
1596 | ||
1597 | svtype SvTYPE(SV* sv) | |
1598 | ||
1599 | =item svtype | |
1600 | ||
1601 | An enum of flags for Perl types. These are found in the file B<sv.h> | |
1602 | in the C<svtype> enum. Test these flags with the C<SvTYPE> macro. | |
1603 | ||
1604 | =item SVt_IV | |
1605 | ||
1606 | Integer type flag for scalars. See C<svtype>. | |
1607 | ||
1608 | =item SVt_NV | |
1609 | ||
1610 | Double type flag for scalars. See C<svtype>. | |
1611 | ||
1612 | =item SVt_PV | |
1613 | ||
1614 | Pointer type flag for scalars. See C<svtype>. | |
1615 | ||
1616 | =item SVt_PVAV | |
1617 | ||
1618 | Type flag for arrays. See C<svtype>. | |
1619 | ||
1620 | =item SVt_PVCV | |
1621 | ||
1622 | Type flag for code refs. See C<svtype>. | |
1623 | ||
1624 | =item SVt_PVHV | |
1625 | ||
1626 | Type flag for hashes. See C<svtype>. | |
1627 | ||
1628 | =item SVt_PVMG | |
1629 | ||
1630 | Type flag for blessed scalars. See C<svtype>. | |
1631 | ||
1632 | =item SvUPGRADE | |
1633 | ||
1634 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to | |
1635 | perform the upgrade if necessary. See C<svtype>. | |
1636 | ||
1637 | void SvUPGRADE(SV* sv, svtype type) | |
1638 | ||
1639 | =item SvUV | |
1640 | ||
1641 | Coerces the given SV to an unsigned integer and returns it. | |
1642 | ||
1643 | UV SvUV(SV* sv) | |
1644 | ||
1645 | =item SvUVX | |
1646 | ||
1647 | Returns the unsigned integer which is stored in the SV, assuming SvIOK is | |
1648 | true. | |
1649 | ||
1650 | UV SvUVX(SV* sv) | |
1651 | ||
1652 | =item sv_2mortal | |
1653 | ||
1654 | Marks an SV as mortal. The SV will be destroyed when the current context | |
1655 | ends. | |
1656 | ||
1657 | SV* sv_2mortal(SV* sv) | |
1658 | ||
1659 | =item sv_bless | |
1660 | ||
1661 | Blesses an SV into a specified package. The SV must be an RV. The package | |
1662 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
1663 | of the SV is unaffected. | |
1664 | ||
1665 | SV* sv_bless(SV* sv, HV* stash) | |
1666 | ||
1667 | =item sv_catpv | |
1668 | ||
1669 | Concatenates the string onto the end of the string which is in the SV. | |
1670 | Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
1671 | ||
1672 | void sv_catpv(SV* sv, const char* ptr) | |
1673 | ||
1674 | =item sv_catpvf | |
1675 | ||
1676 | Processes its arguments like C<sprintf> and appends the formatted output | |
1677 | to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must | |
1678 | typically be called after calling this function to handle 'set' magic. | |
1679 | ||
1680 | void sv_catpvf(SV* sv, const char* pat, ...) | |
1681 | ||
1682 | =item sv_catpvf_mg | |
1683 | ||
1684 | Like C<sv_catpvf>, but also handles 'set' magic. | |
1685 | ||
1686 | void sv_catpvf_mg(SV *sv, const char* pat, ...) | |
1687 | ||
1688 | =item sv_catpvn | |
1689 | ||
1690 | Concatenates the string onto the end of the string which is in the SV. The | |
1691 | C<len> indicates number of bytes to copy. Handles 'get' magic, but not | |
1692 | 'set' magic. See C<sv_catpvn_mg>. | |
1693 | ||
1694 | void sv_catpvn(SV* sv, const char* ptr, STRLEN len) | |
1695 | ||
1696 | =item sv_catpvn_mg | |
1697 | ||
1698 | Like C<sv_catpvn>, but also handles 'set' magic. | |
1699 | ||
1700 | void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len) | |
1701 | ||
1702 | =item sv_catpv_mg | |
1703 | ||
1704 | Like C<sv_catpv>, but also handles 'set' magic. | |
1705 | ||
1706 | void sv_catpv_mg(SV *sv, const char *ptr) | |
1707 | ||
1708 | =item sv_catsv | |
1709 | ||
1710 | Concatenates the string from SV C<ssv> onto the end of the string in SV | |
1711 | C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>. | |
1712 | ||
1713 | void sv_catsv(SV* dsv, SV* ssv) | |
1714 | ||
1715 | =item sv_catsv_mg | |
1716 | ||
1717 | Like C<sv_catsv>, but also handles 'set' magic. | |
1718 | ||
1719 | void sv_catsv_mg(SV *dstr, SV *sstr) | |
1720 | ||
1721 | =item sv_chop | |
1722 | ||
1723 | Efficient removal of characters from the beginning of the string buffer. | |
1724 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside | |
1725 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
1726 | string. | |
1727 | ||
1728 | void sv_chop(SV* sv, char* ptr) | |
1729 | ||
1730 | =item sv_cmp | |
1731 | ||
1732 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
1733 | string in C<sv1> is less than, equal to, or greater than the string in | |
1734 | C<sv2>. | |
1735 | ||
1736 | I32 sv_cmp(SV* sv1, SV* sv2) | |
1737 | ||
1738 | =item sv_dec | |
1739 | ||
1740 | Auto-decrement of the value in the SV. | |
1741 | ||
1742 | void sv_dec(SV* sv) | |
1743 | ||
1744 | =item sv_derived_from | |
1745 | ||
1746 | Returns a boolean indicating whether the SV is derived from the specified | |
1747 | class. This is the function that implements C<UNIVERSAL::isa>. It works | |
1748 | for class names as well as for objects. | |
1749 | ||
1750 | bool sv_derived_from(SV* sv, const char* name) | |
1751 | ||
1752 | =item sv_eq | |
1753 | ||
1754 | Returns a boolean indicating whether the strings in the two SVs are | |
1755 | identical. | |
1756 | ||
1757 | I32 sv_eq(SV* sv1, SV* sv2) | |
1758 | ||
1759 | =item sv_grow | |
1760 | ||
1761 | Expands the character buffer in the SV. This will use C<sv_unref> and will | |
1762 | upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1763 | Use C<SvGROW>. | |
1764 | ||
1765 | char* sv_grow(SV* sv, STRLEN newlen) | |
1766 | ||
1767 | =item sv_inc | |
1768 | ||
1769 | Auto-increment of the value in the SV. | |
1770 | ||
1771 | void sv_inc(SV* sv) | |
1772 | ||
1773 | =item sv_insert | |
1774 | ||
1775 | Inserts a string at the specified offset/length within the SV. Similar to | |
1776 | the Perl substr() function. | |
1777 | ||
1778 | void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, char* little, STRLEN littlelen) | |
1779 | ||
1780 | =item sv_isa | |
1781 | ||
1782 | Returns a boolean indicating whether the SV is blessed into the specified | |
1783 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
1784 | an inheritance relationship. | |
1785 | ||
1786 | int sv_isa(SV* sv, const char* name) | |
1787 | ||
1788 | =item sv_isobject | |
1789 | ||
1790 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
1791 | object. If the SV is not an RV, or if the object is not blessed, then this | |
1792 | will return false. | |
1793 | ||
1794 | int sv_isobject(SV* sv) | |
1795 | ||
1796 | =item sv_len | |
1797 | ||
1798 | Returns the length of the string in the SV. See also C<SvCUR>. | |
1799 | ||
1800 | STRLEN sv_len(SV* sv) | |
1801 | ||
1802 | =item sv_magic | |
1803 | ||
1804 | Adds magic to an SV. | |
1805 | ||
1806 | void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen) | |
1807 | ||
1808 | =item sv_mortalcopy | |
1809 | ||
1810 | Creates a new SV which is a copy of the original SV. The new SV is marked | |
1811 | as mortal. | |
1812 | ||
1813 | SV* sv_mortalcopy(SV* oldsv) | |
1814 | ||
1815 | =item sv_newmortal | |
1816 | ||
1817 | Creates a new SV which is mortal. The reference count of the SV is set to 1. | |
1818 | ||
1819 | SV* sv_newmortal() | |
1820 | ||
1821 | =item sv_setiv | |
1822 | ||
1823 | Copies an integer into the given SV. Does not handle 'set' magic. See | |
1824 | C<sv_setiv_mg>. | |
1825 | ||
1826 | void sv_setiv(SV* sv, IV num) | |
1827 | ||
1828 | =item sv_setiv_mg | |
1829 | ||
1830 | Like C<sv_setiv>, but also handles 'set' magic. | |
1831 | ||
1832 | void sv_setiv_mg(SV *sv, IV i) | |
1833 | ||
1834 | =item sv_setnv | |
1835 | ||
1836 | Copies a double into the given SV. Does not handle 'set' magic. See | |
1837 | C<sv_setnv_mg>. | |
1838 | ||
1839 | void sv_setnv(SV* sv, NV num) | |
1840 | ||
1841 | =item sv_setnv_mg | |
1842 | ||
1843 | Like C<sv_setnv>, but also handles 'set' magic. | |
1844 | ||
1845 | void sv_setnv_mg(SV *sv, NV num) | |
1846 | ||
1847 | =item sv_setpv | |
1848 | ||
1849 | Copies a string into an SV. The string must be null-terminated. Does not | |
1850 | handle 'set' magic. See C<sv_setpv_mg>. | |
1851 | ||
1852 | void sv_setpv(SV* sv, const char* ptr) | |
1853 | ||
1854 | =item sv_setpvf | |
1855 | ||
1856 | Processes its arguments like C<sprintf> and sets an SV to the formatted | |
1857 | output. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
1858 | ||
1859 | void sv_setpvf(SV* sv, const char* pat, ...) | |
1860 | ||
1861 | =item sv_setpvf_mg | |
1862 | ||
1863 | Like C<sv_setpvf>, but also handles 'set' magic. | |
1864 | ||
1865 | void sv_setpvf_mg(SV *sv, const char* pat, ...) | |
1866 | ||
1867 | =item sv_setpviv | |
1868 | ||
1869 | Copies an integer into the given SV, also updating its string value. | |
1870 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
1871 | ||
1872 | void sv_setpviv(SV* sv, IV num) | |
1873 | ||
1874 | =item sv_setpviv_mg | |
1875 | ||
1876 | Like C<sv_setpviv>, but also handles 'set' magic. | |
1877 | ||
1878 | void sv_setpviv_mg(SV *sv, IV iv) | |
1879 | ||
1880 | =item sv_setpvn | |
1881 | ||
1882 | Copies a string into an SV. The C<len> parameter indicates the number of | |
1883 | bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
1884 | ||
1885 | void sv_setpvn(SV* sv, const char* ptr, STRLEN len) | |
1886 | ||
1887 | =item sv_setpvn_mg | |
1888 | ||
1889 | Like C<sv_setpvn>, but also handles 'set' magic. | |
1890 | ||
1891 | void sv_setpvn_mg(SV *sv, const char *ptr, STRLEN len) | |
1892 | ||
1893 | =item sv_setpv_mg | |
1894 | ||
1895 | Like C<sv_setpv>, but also handles 'set' magic. | |
1896 | ||
1897 | void sv_setpv_mg(SV *sv, const char *ptr) | |
1898 | ||
1899 | =item sv_setref_iv | |
1900 | ||
1901 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
1902 | argument will be upgraded to an RV. That RV will be modified to point to | |
1903 | the new SV. The C<classname> argument indicates the package for the | |
1904 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
1905 | will be returned and will have a reference count of 1. | |
1906 | ||
1907 | SV* sv_setref_iv(SV* rv, const char* classname, IV iv) | |
1908 | ||
1909 | =item sv_setref_nv | |
1910 | ||
1911 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
1912 | argument will be upgraded to an RV. That RV will be modified to point to | |
1913 | the new SV. The C<classname> argument indicates the package for the | |
1914 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
1915 | will be returned and will have a reference count of 1. | |
1916 | ||
1917 | SV* sv_setref_nv(SV* rv, const char* classname, NV nv) | |
1918 | ||
1919 | =item sv_setref_pv | |
1920 | ||
1921 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
1922 | argument will be upgraded to an RV. That RV will be modified to point to | |
1923 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
1924 | into the SV. The C<classname> argument indicates the package for the | |
1925 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
1926 | will be returned and will have a reference count of 1. | |
1927 | ||
1928 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
1929 | objects will become corrupted by the pointer copy process. | |
1930 | ||
1931 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
1932 | ||
1933 | SV* sv_setref_pv(SV* rv, const char* classname, void* pv) | |
1934 | ||
1935 | =item sv_setref_pvn | |
1936 | ||
1937 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
1938 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
1939 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
1940 | argument indicates the package for the blessing. Set C<classname> to | |
1941 | C<Nullch> to avoid the blessing. The new SV will be returned and will have | |
1942 | a reference count of 1. | |
1943 | ||
1944 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
1945 | ||
1946 | SV* sv_setref_pvn(SV* rv, const char* classname, char* pv, STRLEN n) | |
1947 | ||
1948 | =item sv_setsv | |
1949 | ||
1950 | Copies the contents of the source SV C<ssv> into the destination SV C<dsv>. | |
1951 | The source SV may be destroyed if it is mortal. Does not handle 'set' | |
1952 | magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and | |
1953 | C<sv_setsv_mg>. | |
1954 | ||
1955 | void sv_setsv(SV* dsv, SV* ssv) | |
1956 | ||
1957 | =item sv_setsv_mg | |
1958 | ||
1959 | Like C<sv_setsv>, but also handles 'set' magic. | |
1960 | ||
1961 | void sv_setsv_mg(SV *dstr, SV *sstr) | |
1962 | ||
1963 | =item sv_setuv | |
1964 | ||
1965 | Copies an unsigned integer into the given SV. Does not handle 'set' magic. | |
1966 | See C<sv_setuv_mg>. | |
1967 | ||
1968 | void sv_setuv(SV* sv, UV num) | |
1969 | ||
1970 | =item sv_setuv_mg | |
1971 | ||
1972 | Like C<sv_setuv>, but also handles 'set' magic. | |
1973 | ||
1974 | void sv_setuv_mg(SV *sv, UV u) | |
1975 | ||
1976 | =item sv_unref | |
1977 | ||
1978 | Unsets the RV status of the SV, and decrements the reference count of | |
1979 | whatever was being referenced by the RV. This can almost be thought of | |
1980 | as a reversal of C<newSVrv>. See C<SvROK_off>. | |
1981 | ||
1982 | void sv_unref(SV* sv) | |
1983 | ||
1984 | =item sv_upgrade | |
1985 | ||
1986 | Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See | |
1987 | C<svtype>. | |
1988 | ||
1989 | bool sv_upgrade(SV* sv, U32 mt) | |
1990 | ||
1991 | =item sv_usepvn | |
1992 | ||
1993 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1994 | stored inside the SV but sv_usepvn allows the SV to use an outside string. | |
1995 | The C<ptr> should point to memory that was allocated by C<malloc>. The | |
1996 | string length, C<len>, must be supplied. This function will realloc the | |
1997 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
1998 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
1999 | See C<sv_usepvn_mg>. | |
2000 | ||
2001 | void sv_usepvn(SV* sv, char* ptr, STRLEN len) | |
2002 | ||
2003 | =item sv_usepvn_mg | |
2004 | ||
2005 | Like C<sv_usepvn>, but also handles 'set' magic. | |
2006 | ||
2007 | void sv_usepvn_mg(SV *sv, char *ptr, STRLEN len) | |
2008 | ||
2009 | =item sv_vcatpvfn | |
2010 | ||
2011 | Processes its arguments like C<vsprintf> and appends the formatted output | |
2012 | to an SV. Uses an array of SVs if the C style variable argument list is | |
2013 | missing (NULL). When running with taint checks enabled, indicates via | |
2014 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
2015 | locales). | |
2016 | ||
2017 | void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted) | |
2018 | ||
2019 | =item sv_vsetpvfn | |
2020 | ||
2021 | Works like C<vcatpvfn> but copies the text into the SV instead of | |
2022 | appending it. | |
2023 | ||
2024 | void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted) | |
2025 | ||
2026 | =item THIS | |
2027 | ||
2028 | Variable which is setup by C<xsubpp> to designate the object in a C++ | |
2029 | XSUB. This is always the proper type for the C++ object. See C<CLASS> and | |
2030 | L<perlxs/"Using XS With C++">. | |
2031 | ||
2032 | (whatever) THIS | |
2033 | ||
2034 | =item toLOWER | |
2035 | ||
2036 | Converts the specified character to lowercase. | |
2037 | ||
2038 | char toLOWER(char ch) | |
2039 | ||
2040 | =item toUPPER | |
2041 | ||
2042 | Converts the specified character to uppercase. | |
2043 | ||
2044 | char toUPPER(char ch) | |
2045 | ||
2046 | =item warn | |
2047 | ||
2048 | This is the XSUB-writer's interface to Perl's C<warn> function. Use this | |
2049 | function the same way you use the C C<printf> function. See | |
2050 | C<croak>. | |
2051 | ||
2052 | void warn(const char* pat, ...) | |
2053 | ||
2054 | =item XPUSHi | |
2055 | ||
2056 | Push an integer onto the stack, extending the stack if necessary. Handles | |
2057 | 'set' magic. See C<PUSHi>. | |
2058 | ||
2059 | void XPUSHi(IV iv) | |
2060 | ||
2061 | =item XPUSHn | |
2062 | ||
2063 | Push a double onto the stack, extending the stack if necessary. Handles | |
2064 | 'set' magic. See C<PUSHn>. | |
2065 | ||
2066 | void XPUSHn(NV nv) | |
2067 | ||
2068 | =item XPUSHp | |
2069 | ||
2070 | Push a string onto the stack, extending the stack if necessary. The C<len> | |
2071 | indicates the length of the string. Handles 'set' magic. See | |
2072 | C<PUSHp>. | |
2073 | ||
2074 | void XPUSHp(char* str, STRLEN len) | |
2075 | ||
2076 | =item XPUSHs | |
2077 | ||
2078 | Push an SV onto the stack, extending the stack if necessary. Does not | |
2079 | handle 'set' magic. See C<PUSHs>. | |
2080 | ||
2081 | void XPUSHs(SV* sv) | |
2082 | ||
2083 | =item XPUSHu | |
2084 | ||
2085 | Push an unsigned integer onto the stack, extending the stack if necessary. | |
2086 | See C<PUSHu>. | |
2087 | ||
2088 | void XPUSHu(UV uv) | |
2089 | ||
2090 | =item XS | |
2091 | ||
2092 | Macro to declare an XSUB and its C parameter list. This is handled by | |
2093 | C<xsubpp>. | |
2094 | ||
2095 | =item XSRETURN | |
2096 | ||
2097 | Return from XSUB, indicating number of items on the stack. This is usually | |
2098 | handled by C<xsubpp>. | |
2099 | ||
2100 | void XSRETURN(int nitems) | |
2101 | ||
2102 | =item XSRETURN_EMPTY | |
2103 | ||
2104 | Return an empty list from an XSUB immediately. | |
2105 | ||
2106 | XSRETURN_EMPTY; | |
2107 | ||
2108 | =item XSRETURN_IV | |
2109 | ||
2110 | Return an integer from an XSUB immediately. Uses C<XST_mIV>. | |
2111 | ||
2112 | void XSRETURN_IV(IV iv) | |
2113 | ||
2114 | =item XSRETURN_NO | |
2115 | ||
2116 | Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>. | |
2117 | ||
2118 | XSRETURN_NO; | |
2119 | ||
2120 | =item XSRETURN_NV | |
2121 | ||
2122 | Return an double from an XSUB immediately. Uses C<XST_mNV>. | |
2123 | ||
2124 | void XSRETURN_NV(NV nv) | |
2125 | ||
2126 | =item XSRETURN_PV | |
2127 | ||
2128 | Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>. | |
2129 | ||
2130 | void XSRETURN_PV(char* str) | |
2131 | ||
2132 | =item XSRETURN_UNDEF | |
2133 | ||
2134 | Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>. | |
2135 | ||
2136 | XSRETURN_UNDEF; | |
2137 | ||
2138 | =item XSRETURN_YES | |
2139 | ||
2140 | Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>. | |
2141 | ||
2142 | XSRETURN_YES; | |
2143 | ||
2144 | =item XST_mIV | |
2145 | ||
2146 | Place an integer into the specified position C<pos> on the stack. The | |
2147 | value is stored in a new mortal SV. | |
2148 | ||
2149 | void XST_mIV(int pos, IV iv) | |
2150 | ||
2151 | =item XST_mNO | |
2152 | ||
2153 | Place C<&PL_sv_no> into the specified position C<pos> on the | |
2154 | stack. | |
2155 | ||
2156 | void XST_mNO(int pos) | |
2157 | ||
2158 | =item XST_mNV | |
2159 | ||
2160 | Place a double into the specified position C<pos> on the stack. The value | |
2161 | is stored in a new mortal SV. | |
2162 | ||
2163 | void XST_mNV(int pos, NV nv) | |
2164 | ||
2165 | =item XST_mPV | |
2166 | ||
2167 | Place a copy of a string into the specified position C<pos> on the stack. | |
2168 | The value is stored in a new mortal SV. | |
2169 | ||
2170 | void XST_mPV(int pos, char* str) | |
2171 | ||
2172 | =item XST_mUNDEF | |
2173 | ||
2174 | Place C<&PL_sv_undef> into the specified position C<pos> on the | |
2175 | stack. | |
2176 | ||
2177 | void XST_mUNDEF(int pos) | |
2178 | ||
2179 | =item XST_mYES | |
2180 | ||
2181 | Place C<&PL_sv_yes> into the specified position C<pos> on the | |
2182 | stack. | |
2183 | ||
2184 | void XST_mYES(int pos) | |
2185 | ||
2186 | =item XS_VERSION | |
2187 | ||
2188 | The version identifier for an XS module. This is usually | |
2189 | handled automatically by C<ExtUtils::MakeMaker>. See C<XS_VERSION_BOOTCHECK>. | |
2190 | ||
2191 | =item XS_VERSION_BOOTCHECK | |
2192 | ||
2193 | Macro to verify that a PM module's $VERSION variable matches the XS | |
2194 | module's C<XS_VERSION> variable. This is usually handled automatically by | |
2195 | C<xsubpp>. See L<perlxs/"The VERSIONCHECK: Keyword">. | |
2196 | ||
2197 | XS_VERSION_BOOTCHECK; | |
2198 | ||
2199 | =item Zero | |
2200 | ||
2201 | The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the | |
2202 | destination, C<nitems> is the number of items, and C<type> is the type. | |
2203 | ||
2204 | void Zero(void* dest, int nitems, type) | |
2205 | ||
2206 | =back | |
2207 | ||
2208 | =head1 AUTHORS | |
2209 | ||
2210 | Until May 1997, this document was maintained by Jeff Okamoto | |
2211 | <okamoto@corp.hp.com>. It is now maintained as part of Perl itself. | |
2212 | ||
2213 | With lots of help and suggestions from Dean Roehrich, Malcolm Beattie, | |
2214 | Andreas Koenig, Paul Hudson, Ilya Zakharevich, Paul Marquess, Neil | |
2215 | Bowers, Matthew Green, Tim Bunce, Spider Boardman, Ulrich Pfeifer, | |
2216 | Stephen McCamant, and Gurusamy Sarathy. | |
2217 | ||
2218 | API Listing originally by Dean Roehrich <roehrich@cray.com>. | |
2219 | ||
2220 | Updated to be autogenerated from comments in the source by Benjamin Stuhl. | |
2221 | ||
2222 | =head1 SEE ALSO | |
2223 | ||
2224 | perlguts(1), perlxs(1), perlxstut(1), perlintern(1) | |
2225 |