projects / p5sagit/Function-Parameters.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | history | HEAD
avoid more compiler warnings
[p5sagit/Function-Parameters.git] / Parameters.xs
CommitLineData
db81d362 1/*
2Copyright 2012 Lukas Mai.
3
4This program is free software; you can redistribute it and/or modify it
5under the terms of either: the GNU General Public License as published
6by the Free Software Foundation; or the Artistic License.
7
8See http://dev.perl.org/licenses/ for more information.
9 */
10
11#ifdef __GNUC__
12 #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ >= 5
13 #define PRAGMA_GCC_(X) _Pragma(#X)
14 #define PRAGMA_GCC(X) PRAGMA_GCC_(GCC X)
15 #endif
16#endif
17
18#ifndef PRAGMA_GCC
19 #define PRAGMA_GCC(X)
20#endif
21
22#ifdef DEVEL
23 #define WARNINGS_RESET PRAGMA_GCC(diagnostic pop)
24 #define WARNINGS_ENABLEW(X) PRAGMA_GCC(diagnostic warning #X)
25 #define WARNINGS_ENABLE \
26 WARNINGS_ENABLEW(-Wall) \
27 WARNINGS_ENABLEW(-Wextra) \
28 WARNINGS_ENABLEW(-Wundef) \
c3e72f35 29 /* WARNINGS_ENABLEW(-Wshadow) :-( */ \
db81d362 30 WARNINGS_ENABLEW(-Wbad-function-cast) \
31 WARNINGS_ENABLEW(-Wcast-align) \
32 WARNINGS_ENABLEW(-Wwrite-strings) \
33 /* WARNINGS_ENABLEW(-Wnested-externs) wtf? */ \
34 WARNINGS_ENABLEW(-Wstrict-prototypes) \
35 WARNINGS_ENABLEW(-Wmissing-prototypes) \
36 WARNINGS_ENABLEW(-Winline) \
37 WARNINGS_ENABLEW(-Wdisabled-optimization)
38
39#else
40 #define WARNINGS_RESET
1bc47886 41 #define WARNINGS_ENABLE
db81d362 42#endif
43
44
7dd35535 45#define PERL_NO_GET_CONTEXT
db81d362 46#include "EXTERN.h"
47#include "perl.h"
48#include "XSUB.h"
49
50#include <string.h>
51
63915d26 52
db81d362 53WARNINGS_ENABLE
54
db81d362 55
7dd35535 56#define HAVE_PERL_VERSION(R, V, S) \
57 (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
58
de013990 59#if HAVE_PERL_VERSION(5, 16, 0)
60 #define IF_HAVE_PERL_5_16(YES, NO) YES
61#else
62 #define IF_HAVE_PERL_5_16(YES, NO) NO
63#endif
64
e158cf8f 65#if 0
66 #if HAVE_PERL_VERSION(5, 17, 6)
67 #error "internal error: missing definition of KEY_my (your perl is too new)"
68 #elif HAVE_PERL_VERSION(5, 15, 8)
69 #define S_KEY_my 134
70 #elif HAVE_PERL_VERSION(5, 15, 6)
71 #define S_KEY_my 133
72 #elif HAVE_PERL_VERSION(5, 15, 5)
73 #define S_KEY_my 132
74 #elif HAVE_PERL_VERSION(5, 13, 0)
75 #define S_KEY_my 131
76 #else
77 #error "internal error: missing definition of KEY_my (your perl is too old)"
78 #endif
79#endif
80
63915d26 81
82#define MY_PKG "Function::Parameters"
83
84#define HINTK_KEYWORDS MY_PKG "/keywords"
85#define HINTK_FLAGS_ MY_PKG "/flags:"
86#define HINTK_SHIFT_ MY_PKG "/shift:"
87#define HINTK_ATTRS_ MY_PKG "/attrs:"
88
89#define DEFSTRUCT(T) typedef struct T T; struct T
90
0f875412 91#define UV_BITS (sizeof (UV) * CHAR_BIT)
63915d26 92
93enum {
94 FLAG_NAME_OK = 0x01,
95 FLAG_ANON_OK = 0x02,
96 FLAG_DEFAULT_ARGS = 0x04,
d8e5d540 97 FLAG_CHECK_NARGS = 0x08,
e158cf8f 98 FLAG_INVOCANT = 0x10,
51a483f8 99 FLAG_NAMED_PARAMS = 0x20,
100 FLAG_TYPES_OK = 0x40,
101 FLAG_CHECK_TARGS = 0x80
63915d26 102};
103
104DEFSTRUCT(KWSpec) {
105 unsigned flags;
b72eb6ee 106 SV *shift;
107 SV *attrs;
63915d26 108};
db81d362 109
110static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
111
e4648f19 112DEFSTRUCT(Resource) {
113 Resource *next;
114 void *data;
115 void (*destroy)(pTHX_ void *);
116};
117
118typedef Resource *Sentinel[1];
119
120static void sentinel_clear_void(pTHX_ void *p) {
121 Resource **pp = p;
122 while (*pp) {
123 Resource *cur = *pp;
a4c13d40 124 if (cur->destroy) {
125 cur->destroy(aTHX_ cur->data);
126 }
e4648f19 127 cur->data = (void *)"no";
128 cur->destroy = NULL;
129 *pp = cur->next;
130 Safefree(cur);
131 }
132}
133
a4c13d40 134static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
e4648f19 135 Resource *cur;
136
137 Newx(cur, 1, Resource);
138 cur->data = data;
139 cur->destroy = destroy;
140 cur->next = *sen;
141 *sen = cur;
a4c13d40 142
143 return cur;
144}
145
146static void sentinel_disarm(Resource *p) {
147 p->destroy = NULL;
e4648f19 148}
149
150static void my_sv_refcnt_dec_void(pTHX_ void *p) {
151 SV *sv = p;
152 SvREFCNT_dec(sv);
153}
154
155static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
156 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
157 return sv;
158}
159
160static void my_safefree(void *p) {
161 Safefree(p);
162}
163
164#define SENTINEL_ALLOC(SEN, P, N, T) STMT_START { \
165 Newx(P, N, T); \
166 sentinel_register(SEN, P, my_safefree); \
167} STMT_END
168
169#define SENTINEL_MDUP(SEN, P, O, N, T) STMT_START { \
170 void *const _sentinel_mdup_tmp_ = (P); \
171 SENTINEL_ALLOC(SEN, P, N, T); \
172 memcpy(P, _sentinel_mdup_tmp_, O * sizeof (T)); \
173} STMT_END
174
175#define SENTINEL_REALLOC(SEN, P, N, T) STMT_START { \
176 assert((N) > 0); \
177 if (!(P)) { \
178 SENTINEL_ALLOC(SEN, P, N, T); \
179 } else { \
180 Resource **_sentinel_realloc_tmp_ = (SEN); \
181 for (;;) { \
182 assert(*_sentinel_realloc_tmp_ != NULL); \
183 if ((*_sentinel_realloc_tmp_)->data == (P)) { \
184 Renew((*_sentinel_realloc_tmp_)->data, N, T); \
185 (P) = (*_sentinel_realloc_tmp_)->data; \
186 break; \
187 } \
188 _sentinel_realloc_tmp_ = &(*_sentinel_realloc_tmp_)->next; \
189 } \
190 } \
191} STMT_END
192
193static int kw_flags(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
db81d362 194 HV *hints;
195 SV *sv, **psv;
196 const char *p, *kw_active;
197 STRLEN kw_active_len;
198
63915d26 199 spec->flags = 0;
e4648f19 200 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
201 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
db81d362 202
203 if (!(hints = GvHV(PL_hintgv))) {
204 return FALSE;
205 }
206 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
207 return FALSE;
208 }
209 sv = *psv;
210 kw_active = SvPV(sv, kw_active_len);
211 if (kw_active_len <= kw_len) {
212 return FALSE;
213 }
e88490f6 214 for (
215 p = kw_active;
216 (p = strchr(p, *kw_ptr)) &&
217 p < kw_active + kw_active_len - kw_len;
218 p++
219 ) {
db81d362 220 if (
221 (p == kw_active || p[-1] == ' ') &&
222 p[kw_len] == ' ' &&
223 memcmp(kw_ptr, p, kw_len) == 0
224 ) {
b72eb6ee 225
d970c3e7 226#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
b72eb6ee 227 const char *fk_ptr_; \
228 STRLEN fk_len_; \
229 SV *fk_sv_; \
e4648f19 230 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
b72eb6ee 231 sv_catpvn(fk_sv_, PTR, LEN); \
232 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
233 if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
234 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
235 } \
d970c3e7 236} STMT_END
b72eb6ee 237
63915d26 238 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
239 spec->flags = SvIV(*psv);
db81d362 240
b72eb6ee 241 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
242 SvSetSV(spec->shift, *psv);
db81d362 243
b72eb6ee 244 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
245 SvSetSV(spec->attrs, *psv);
246
247#undef FETCH_HINTK_INTO
db81d362 248 return TRUE;
249 }
250 }
251 return FALSE;
252}
253
254
51a483f8 255static void free_ptr_op_void(pTHX_ void *vp) {
c311cef3 256 OP **pp = vp;
257 op_free(*pp);
258 Safefree(pp);
259}
260
51a483f8 261static void free_op_void(pTHX_ void *vp) {
262 OP *p = vp;
263 op_free(p);
264}
265
59016bfb 266#define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
c311cef3 267
59016bfb 268static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
c311cef3 269 STRLEN sv_len;
270 const char *sv_p = SvPV(sv, sv_len);
59016bfb 271 return memcmp(sv_p, p, n) == 0;
c311cef3 272}
273
274
275#include "padop_on_crack.c.inc"
276
277
c311cef3 278enum {
279 MY_ATTR_LVALUE = 0x01,
280 MY_ATTR_METHOD = 0x02,
281 MY_ATTR_SPECIAL = 0x04
282};
283
31534187 284static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
285 char ds[UTF8_MAXBYTES + 1], *d;
67fc1ddb 286 d = (char *)uvchr_to_utf8((U8 *)ds, c);
31534187 287 if (d - ds > 1) {
288 sv_utf8_upgrade(sv);
289 }
290 sv_catpvn(sv, ds, d - ds);
291}
292
293static bool my_is_uni_xidfirst(pTHX_ UV c) {
294 U8 tmpbuf[UTF8_MAXBYTES + 1];
295 uvchr_to_utf8(tmpbuf, c);
296 return is_utf8_xidfirst(tmpbuf);
297}
298
299static bool my_is_uni_xidcont(pTHX_ UV c) {
300 U8 tmpbuf[UTF8_MAXBYTES + 1];
301 uvchr_to_utf8(tmpbuf, c);
302 return is_utf8_xidcont(tmpbuf);
303}
304
e4648f19 305static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
31534187 306 bool at_start, at_substart;
307 I32 c;
e4648f19 308 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 309 if (lex_bufutf8()) {
310 SvUTF8_on(sv);
311 }
312
313 at_start = at_substart = TRUE;
314 c = lex_peek_unichar(0);
315
316 while (c != -1) {
317 if (at_substart ? my_is_uni_xidfirst(aTHX_ c) : my_is_uni_xidcont(aTHX_ c)) {
318 lex_read_unichar(0);
319 my_sv_cat_c(aTHX_ sv, c);
320 at_substart = FALSE;
321 c = lex_peek_unichar(0);
322 } else if (allow_package && !at_substart && c == '\'') {
323 lex_read_unichar(0);
324 c = lex_peek_unichar(0);
325 if (!my_is_uni_xidfirst(aTHX_ c)) {
326 lex_stuff_pvs("'", 0);
327 break;
328 }
329 sv_catpvs(sv, "'");
330 at_substart = TRUE;
331 } else if (allow_package && (at_start || !at_substart) && c == ':') {
332 lex_read_unichar(0);
333 if (lex_peek_unichar(0) != ':') {
334 lex_stuff_pvs(":", 0);
335 break;
336 }
337 lex_read_unichar(0);
338 c = lex_peek_unichar(0);
339 if (!my_is_uni_xidfirst(aTHX_ c)) {
340 lex_stuff_pvs("::", 0);
341 break;
342 }
343 sv_catpvs(sv, "::");
344 at_substart = TRUE;
345 } else {
346 break;
347 }
348 at_start = FALSE;
349 }
350
351 return SvCUR(sv) ? sv : NULL;
352}
353
e4648f19 354static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
31534187 355 I32 c, nesting;
356 SV *sv;
357 line_t start;
358
359 start = CopLINE(PL_curcop);
360
e4648f19 361 sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 362 if (lex_bufutf8()) {
363 SvUTF8_on(sv);
364 }
365
366 nesting = 0;
367 for (;;) {
368 c = lex_read_unichar(0);
369 if (c == EOF) {
370 CopLINE_set(PL_curcop, start);
371 return NULL;
372 }
373
374 if (c == '\\') {
375 c = lex_read_unichar(0);
376 if (c == EOF) {
377 CopLINE_set(PL_curcop, start);
378 return NULL;
379 }
380 if (keep_backslash || (c != '(' && c != ')')) {
381 sv_catpvs(sv, "\\");
382 }
383 } else if (c == '(') {
384 nesting++;
385 } else if (c == ')') {
386 if (!nesting) {
387 break;
388 }
389 nesting--;
390 }
391
392 my_sv_cat_c(aTHX_ sv, c);
393 }
394
395 return sv;
396}
397
e4648f19 398static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
31534187 399 char *start, *r, *w, *end;
400 STRLEN len;
401
402 /* strip spaces */
403 start = SvPV(proto, len);
404 end = start + len;
405
406 for (w = r = start; r < end; r++) {
407 if (!isSPACE(*r)) {
408 *w++ = *r;
409 }
410 }
411 *w = '\0';
412 SvCUR_set(proto, w - start);
413 end = w;
414 len = end - start;
415
416 if (!ckWARN(WARN_ILLEGALPROTO)) {
417 return;
418 }
419
420 /* check for bad characters */
421 if (strspn(start, "$@%*;[]&\\_+") != len) {
e4648f19 422 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
31534187 423 warner(
424 packWARN(WARN_ILLEGALPROTO),
425 "Illegal character in prototype for %"SVf" : %s",
426 SVfARG(declarator),
427 SvUTF8(proto)
428 ? sv_uni_display(
429 dsv,
430 proto,
431 len,
432 UNI_DISPLAY_ISPRINT
433 )
434 : pv_pretty(dsv, start, len, 60, NULL, NULL,
435 PERL_PV_ESCAPE_NONASCII
436 )
437 );
438 return;
439 }
440
441 for (r = start; r < end; r++) {
442 switch (*r) {
443 default:
444 warner(
445 packWARN(WARN_ILLEGALPROTO),
446 "Illegal character in prototype for %"SVf" : %s",
447 SVfARG(declarator), r
448 );
449 return;
450
451 case '_':
452 if (r[1] && !strchr(";@%", *r)) {
453 warner(
454 packWARN(WARN_ILLEGALPROTO),
455 "Illegal character after '_' in prototype for %"SVf" : %s",
456 SVfARG(declarator), r
457 );
458 return;
459 }
460 break;
461
462 case '@':
463 case '%':
464 if (r[1]) {
465 warner(
466 packWARN(WARN_ILLEGALPROTO),
467 "prototype after '%c' for %"SVf": %s",
468 *r, SVfARG(declarator), r + 1
469 );
470 return;
471 }
472 break;
473
474 case '\\':
475 r++;
476 if (strchr("$@%&*", *r)) {
477 break;
478 }
479 if (*r == '[') {
480 r++;
481 for (; r < end && *r != ']'; r++) {
482 if (!strchr("$@%&*", *r)) {
483 break;
484 }
485 }
486 if (*r == ']' && r[-1] != '[') {
487 break;
488 }
489 }
490 warner(
491 packWARN(WARN_ILLEGALPROTO),
492 "Illegal character after '\\' in prototype for %"SVf" : %s",
493 SVfARG(declarator), r
494 );
495 return;
496
497 case '$':
498 case '*':
499 case '&':
500 case ';':
501 case '+':
502 break;
503 }
504 }
505}
506
51a483f8 507static SV *parse_type(pTHX_ Sentinel, const SV *);
508
509static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
510 I32 c;
511 SV *t;
512
513 t = my_scan_word(aTHX_ sen, TRUE);
514 lex_read_space(0);
515
516 c = lex_peek_unichar(0);
517 if (c == '[') {
518 SV *u;
519
520 lex_read_unichar(0);
521 lex_read_space(0);
522 my_sv_cat_c(aTHX_ t, c);
523
524 u = parse_type(aTHX_ sen, declarator);
525 sv_catsv(t, u);
526
527 c = lex_peek_unichar(0);
528 if (c != ']') {
529 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
530 }
531 lex_read_unichar(0);
532 lex_read_space(0);
533
534 my_sv_cat_c(aTHX_ t, c);
535 }
536
537 return t;
538}
539
540static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
541 I32 c;
542 SV *t;
543
544 t = parse_type_paramd(aTHX_ sen, declarator);
545
546 c = lex_peek_unichar(0);
547 while (c == '|') {
548 SV *u;
549
550 lex_read_unichar(0);
551 lex_read_space(0);
552
553 my_sv_cat_c(aTHX_ t, c);
554 u = parse_type_paramd(aTHX_ sen, declarator);
555 sv_catsv(t, u);
556
557 c = lex_peek_unichar(0);
558 }
559
560 return t;
561}
562
563static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
564 SV *t;
565 int n;
566 dSP;
567
568 ENTER;
569 SAVETMPS;
570
571 PUSHMARK(SP);
572 EXTEND(SP, 1);
573 PUSHs(name);
574 PUTBACK;
575
576 n = call_pv("Moose::Util::TypeConstraints::find_or_parse_type_constraint", G_SCALAR);
577 SPAGAIN;
578
579 assert(n == 1);
a8492ba4 580 /* don't warn about n being unused if assert() is compiled out */
581 n = n;
582
51a483f8 583 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
584
585 PUTBACK;
586 FREETMPS;
587 LEAVE;
588
589 if (!SvTRUE(t)) {
590 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
591 }
592
593 return t;
594}
595
e158cf8f 596
597DEFSTRUCT(Param) {
598 SV *name;
599 PADOFFSET padoff;
51a483f8 600 SV *type;
e158cf8f 601};
602
603DEFSTRUCT(ParamInit) {
604 Param param;
605 OP *init;
606};
607
608#define VEC(B) B ## _Vec
609
610#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
611 B (*data); \
612 size_t used, size; \
613}
614
615DEFVECTOR(Param);
616DEFVECTOR(ParamInit);
617
618#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
619 p->used = 0; \
620 p->size = 23; \
621 Newx(p->data, p->size, B); \
622} static void N(VEC(B) *)
623
624DEFSTRUCT(ParamSpec) {
625 Param invocant;
626 VEC(Param) positional_required;
627 VEC(ParamInit) positional_optional;
628 VEC(Param) named_required;
629 VEC(ParamInit) named_optional;
630 Param slurpy;
fc634bba 631 PADOFFSET rest_hash;
e158cf8f 632};
633
634DEFVECTOR_INIT(pv_init, Param);
635DEFVECTOR_INIT(piv_init, ParamInit);
636
637static void p_init(Param *p) {
638 p->name = NULL;
639 p->padoff = NOT_IN_PAD;
51a483f8 640 p->type = NULL;
e158cf8f 641}
642
643static void ps_init(ParamSpec *ps) {
644 p_init(&ps->invocant);
645 pv_init(&ps->positional_required);
646 piv_init(&ps->positional_optional);
647 pv_init(&ps->named_required);
648 piv_init(&ps->named_optional);
649 p_init(&ps->slurpy);
fc634bba 650 ps->rest_hash = NOT_IN_PAD;
e158cf8f 651}
652
653#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
654 assert(p->used <= p->size); \
655 if (p->used == p->size) { \
656 const size_t n = p->size / 2 * 3 + 1; \
657 Renew(p->data, n, B); \
658 p->size = n; \
659 } \
660 return &p->data[p->used]; \
661} static B (*N(VEC(B) *))
662
663DEFVECTOR_EXTEND(pv_extend, Param);
664DEFVECTOR_EXTEND(piv_extend, ParamInit);
665
666#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
667 while (p->used) { \
668 p->used--; \
669 F(aTHX_ &p->data[p->used]); \
670 } \
671 Safefree(p->data); \
672 p->data = NULL; \
673 p->size = 0; \
674} static void N(pTHX_ VEC(B) *)
675
676static void p_clear(pTHX_ Param *p) {
677 p->name = NULL;
678 p->padoff = NOT_IN_PAD;
51a483f8 679 p->type = NULL;
e158cf8f 680}
681
682static void pi_clear(pTHX_ ParamInit *pi) {
683 p_clear(aTHX_ &pi->param);
684 if (pi->init) {
685 op_free(pi->init);
686 pi->init = NULL;
687 }
688}
689
690DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
691DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
692
693static void ps_clear(pTHX_ ParamSpec *ps) {
694 p_clear(aTHX_ &ps->invocant);
695
696 pv_clear(aTHX_ &ps->positional_required);
697 piv_clear(aTHX_ &ps->positional_optional);
698
699 pv_clear(aTHX_ &ps->named_required);
700 piv_clear(aTHX_ &ps->named_optional);
701
702 p_clear(aTHX_ &ps->slurpy);
703}
704
705static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
706 size_t i, lim;
707
708 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
709 return 1;
710 }
711
712 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
713 if (sv_eq(sv, ps->positional_required.data[i].name)) {
714 return 1;
715 }
716 }
717
718 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
719 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
720 return 1;
721 }
722 }
723
724 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
725 if (sv_eq(sv, ps->named_required.data[i].name)) {
726 return 1;
727 }
728 }
729
730 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
731 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
732 return 1;
733 }
734 }
735
736 return 0;
737}
738
739static void ps_free_void(pTHX_ void *p) {
740 ps_clear(aTHX_ p);
741 Safefree(p);
742}
743
744static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
745 int n = 0;
746 if (!ps) {
747 return SvTRUE(ks->shift) ? 1 : 0;
748 }
749 if (ps->invocant.name) {
750 n++;
751 }
752 n += ps->positional_required.used;
753 n += ps->named_required.used * 2;
754 return n;
755}
756
757static int args_max(const ParamSpec *ps) {
758 int n = 0;
759 if (!ps) {
760 return -1;
761 }
762 if (ps->invocant.name) {
763 n++;
764 }
765 n += ps->positional_required.used;
766 n += ps->positional_optional.used;
767 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
768 n = -1;
769 }
770 return n;
771}
772
773static size_t count_positional_params(const ParamSpec *ps) {
774 return ps->positional_required.used + ps->positional_optional.used;
775}
776
777static size_t count_named_params(const ParamSpec *ps) {
778 return ps->named_required.used + ps->named_optional.used;
779}
780
51a483f8 781static void my_require(pTHX_ const char *file) {
782 require_pv(file);
783 if (SvTRUE(ERRSV)) {
784 croak_sv(ERRSV);
785 }
786}
787
788static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
789 SV *sv;
790 CV *cv;
791 dSP;
792
793 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
794
795 ENTER;
796 SAVETMPS;
797
798 PUSHMARK(SP);
799 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
800 SPAGAIN;
801 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
802
803 PUTBACK;
804 FREETMPS;
805 LEAVE;
806
807 return sv;
808}
809
e158cf8f 810enum {
811 PARAM_INVOCANT = 0x01,
812 PARAM_NAMED = 0x02
813};
814
815/* *pinit must be NULL on entry.
816 * caller must free *pinit on error.
817 */
818static PADOFFSET parse_param(
819 pTHX_
e4648f19 820 Sentinel sen,
e158cf8f 821 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
51a483f8 822 int *pflags, SV **pname, OP **pinit, SV **ptype
e158cf8f 823) {
824 I32 c;
825 char sigil;
a4c13d40 826 SV *name;
e158cf8f 827
828 assert(!*pinit);
829 *pflags = 0;
51a483f8 830 *ptype = NULL;
e158cf8f 831
832 c = lex_peek_unichar(0);
833
51a483f8 834 if (spec->flags & FLAG_TYPES_OK) {
835 if (c == '(') {
836 I32 floor;
837 OP *expr;
a4c13d40 838 Resource *expr_sentinel;
51a483f8 839
840 lex_read_unichar(0);
841
a4c13d40 842 floor = start_subparse(FALSE, 0);
843 SAVEFREESV(PL_compcv);
844 CvSPECIAL_on(PL_compcv);
51a483f8 845
846 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
847 croak("In %"SVf": invalid type expression", SVfARG(declarator));
848 }
a4c13d40 849 expr_sentinel = sentinel_register(sen, expr, free_op_void);
51a483f8 850
851 lex_read_space(0);
852 c = lex_peek_unichar(0);
853 if (c != ')') {
854 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
855 }
856 lex_read_unichar(0);
857 lex_read_space(0);
858
a4c13d40 859 SvREFCNT_inc_simple_void(PL_compcv);
860 sentinel_disarm(expr_sentinel);
51a483f8 861 *ptype = my_eval(aTHX_ sen, floor, expr);
a4c13d40 862 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 863 if (!sv_isobject(*ptype)) {
864 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
865 }
866
867 c = lex_peek_unichar(0);
868 } else if (my_is_uni_xidfirst(aTHX_ c)) {
a4c13d40 869 *ptype = parse_type(aTHX_ sen, declarator);
51a483f8 870 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
a4c13d40 871 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 872
873 c = lex_peek_unichar(0);
874 }
875 }
876
e158cf8f 877 if (c == ':') {
878 lex_read_unichar(0);
879 lex_read_space(0);
880
881 *pflags |= PARAM_NAMED;
882
883 c = lex_peek_unichar(0);
884 }
885
886 if (c == -1) {
887 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
888 }
51a483f8 889
e158cf8f 890 if (!(c == '$' || c == '@' || c == '%')) {
891 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
892 }
893
894 sigil = c;
895
896 lex_read_unichar(0);
897 lex_read_space(0);
898
e4648f19 899 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
e158cf8f 900 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
901 }
902 sv_insert(name, 0, 0, &sigil, 1);
903 *pname = name;
904
905 lex_read_space(0);
906 c = lex_peek_unichar(0);
907
908 if (c == '=') {
909 lex_read_unichar(0);
910 lex_read_space(0);
911
912
913 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
914 param_spec->invocant.name = spec->shift;
915 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
916 }
917
918 *pinit = parse_termexpr(0);
919
920 lex_read_space(0);
921 c = lex_peek_unichar(0);
922 }
923
924 if (c == ':') {
925 *pflags |= PARAM_INVOCANT;
926 lex_read_unichar(0);
927 lex_read_space(0);
928 } else if (c == ',') {
929 lex_read_unichar(0);
930 lex_read_space(0);
931 } else if (c != ')') {
932 if (c == -1) {
933 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
934 }
935 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
936 }
937
938 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
939}
940
941static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
942 OP *var = newOP(type, flags);
943 var->op_targ = padoff;
944 return var;
945}
946
947static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
948 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
949}
950
fc634bba 951static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
952 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
953 return newBINOP(OP_HELEM, 0, hv, k);
954}
955
956static OP *mkconstsv(pTHX_ SV *sv) {
957 return newSVOP(OP_CONST, 0, sv);
958}
959
960static OP *mkconstiv(pTHX_ IV i) {
961 return mkconstsv(aTHX_ newSViv(i));
962}
963
964static OP *mkconstpv(pTHX_ const char *p, size_t n) {
965 return mkconstsv(aTHX_ newSVpv(p, n));
966}
967
968#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
969
51a483f8 970static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
971 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
a8492ba4 972 OP *chk, *err, *msg, *xcroak;
51a483f8 973
974 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
975 {
976 OP *args = NULL;
977
978 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
979 args = op_append_elem(
980 OP_LIST, args,
981 padoff == NOT_IN_PAD
982 ? S_newDEFSVOP(aTHX)
983 : my_var(aTHX_ 0, padoff)
984 );
985 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
986
987 msg = args;
988 msg->op_type = OP_ENTERSUB;
989 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
990 msg->op_flags |= OPf_STACKED;
991 }
992
993 msg = newBINOP(OP_CONCAT, 0, err, msg);
994
995 xcroak = newCVREF(
996 OPf_WANT_SCALAR,
997 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
998 );
999 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1000
1001 {
1002 OP *args = NULL;
1003
1004 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
1005 args = op_append_elem(
1006 OP_LIST, args,
1007 padoff == NOT_IN_PAD
1008 ? S_newDEFSVOP(aTHX)
1009 : my_var(aTHX_ 0, padoff)
1010 );
1011 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
1012
1013 chk = args;
1014 chk->op_type = OP_ENTERSUB;
1015 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1016 chk->op_flags |= OPf_STACKED;
1017 }
1018
1019 chk = newLOGOP(OP_OR, 0, chk, xcroak);
1020 return chk;
1021}
1022
1023static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
1024 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
1025}
1026
53c979f0 1027static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
1028 dSP;
1029
1030 ENTER;
1031 SAVETMPS;
1032
1033 PUSHMARK(SP);
51a483f8 1034 EXTEND(SP, 10);
53c979f0 1035
1036 /* 0 */ {
1037 mPUSHu(key);
1038 }
1039 /* 1 */ {
1040 size_t n;
1041 char *p = SvPV(declarator, n);
1042 char *q = memchr(p, ' ', n);
79bce2d4 1043 mPUSHp(p, q ? (size_t)(q - p) : n);
53c979f0 1044 }
1045 if (!ps) {
1046 if (SvTRUE(kws->shift)) {
1047 PUSHs(kws->shift);
1048 } else {
1049 PUSHmortal;
1050 }
51a483f8 1051 PUSHmortal;
53c979f0 1052 mPUSHs(newRV_noinc((SV *)newAV()));
1053 mPUSHs(newRV_noinc((SV *)newAV()));
1054 mPUSHs(newRV_noinc((SV *)newAV()));
1055 mPUSHs(newRV_noinc((SV *)newAV()));
1056 mPUSHp("@_", 2);
51a483f8 1057 PUSHmortal;
53c979f0 1058 } else {
51a483f8 1059 /* 2, 3 */ {
53c979f0 1060 if (ps->invocant.name) {
1061 PUSHs(ps->invocant.name);
51a483f8 1062 if (ps->invocant.type) {
1063 PUSHs(ps->invocant.type);
1064 } else {
1065 PUSHmortal;
1066 }
53c979f0 1067 } else {
1068 PUSHmortal;
51a483f8 1069 PUSHmortal;
53c979f0 1070 }
1071 }
51a483f8 1072 /* 4 */ {
53c979f0 1073 size_t i, lim;
1074 AV *av;
1075
1076 lim = ps->positional_required.used;
1077
1078 av = newAV();
1079 if (lim) {
51a483f8 1080 av_extend(av, (lim - 1) * 2);
53c979f0 1081 for (i = 0; i < lim; i++) {
51a483f8 1082 Param *cur = &ps->positional_required.data[i];
1083 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1084 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1085 }
1086 }
1087
1088 mPUSHs(newRV_noinc((SV *)av));
1089 }
51a483f8 1090 /* 5 */ {
53c979f0 1091 size_t i, lim;
1092 AV *av;
1093
1094 lim = ps->positional_optional.used;
1095
1096 av = newAV();
1097 if (lim) {
51a483f8 1098 av_extend(av, (lim - 1) * 2);
53c979f0 1099 for (i = 0; i < lim; i++) {
51a483f8 1100 Param *cur = &ps->positional_optional.data[i].param;
1101 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1102 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1103 }
1104 }
1105
1106 mPUSHs(newRV_noinc((SV *)av));
1107 }
51a483f8 1108 /* 6 */ {
53c979f0 1109 size_t i, lim;
1110 AV *av;
1111
1112 lim = ps->named_required.used;
1113
1114 av = newAV();
1115 if (lim) {
51a483f8 1116 av_extend(av, (lim - 1) * 2);
53c979f0 1117 for (i = 0; i < lim; i++) {
51a483f8 1118 Param *cur = &ps->named_required.data[i];
1119 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1120 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1121 }
1122 }
1123
1124 mPUSHs(newRV_noinc((SV *)av));
1125 }
51a483f8 1126 /* 7 */ {
53c979f0 1127 size_t i, lim;
1128 AV *av;
1129
1130 lim = ps->named_optional.used;
1131
1132 av = newAV();
1133 if (lim) {
51a483f8 1134 av_extend(av, (lim - 1) * 2);
53c979f0 1135 for (i = 0; i < lim; i++) {
51a483f8 1136 Param *cur = &ps->named_optional.data[i].param;
1137 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1138 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1139 }
1140 }
1141
1142 mPUSHs(newRV_noinc((SV *)av));
1143 }
51a483f8 1144 /* 8, 9 */ {
53c979f0 1145 if (ps->slurpy.name) {
1146 PUSHs(ps->slurpy.name);
51a483f8 1147 if (ps->slurpy.type) {
1148 PUSHs(ps->slurpy.type);
1149 } else {
1150 PUSHmortal;
1151 }
53c979f0 1152 } else {
1153 PUSHmortal;
51a483f8 1154 PUSHmortal;
53c979f0 1155 }
1156 }
1157 }
1158 PUTBACK;
1159
1160 call_pv(MY_PKG "::_register_info", G_VOID);
1161
1162 FREETMPS;
1163 LEAVE;
1164}
1165
e4648f19 1166static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
e158cf8f 1167 ParamSpec *param_spec;
c311cef3 1168 SV *declarator;
1169 I32 floor_ix;
63915d26 1170 int save_ix;
c311cef3 1171 SV *saw_name;
1e0f1595 1172 OP **prelude_sentinel;
c311cef3 1173 SV *proto;
1174 OP **attrs_sentinel, *body;
1175 unsigned builtin_attrs;
db81d362 1176 I32 c;
1177
e4648f19 1178 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
db81d362 1179
db81d362 1180 lex_read_space(0);
1181
c311cef3 1182 builtin_attrs = 0;
1183
db81d362 1184 /* function name */
c311cef3 1185 saw_name = NULL;
e4648f19 1186 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
c311cef3 1187
1188 if (PL_parser->expect != XSTATE) {
1189 /* bail out early so we don't predeclare $saw_name */
1190 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1191 }
1192
db81d362 1193 sv_catpvs(declarator, " ");
c311cef3 1194 sv_catsv(declarator, saw_name);
1195
1196 if (
1197 sv_eq_pvs(saw_name, "BEGIN") ||
1198 sv_eq_pvs(saw_name, "END") ||
1199 sv_eq_pvs(saw_name, "INIT") ||
1200 sv_eq_pvs(saw_name, "CHECK") ||
1201 sv_eq_pvs(saw_name, "UNITCHECK")
1202 ) {
1203 builtin_attrs |= MY_ATTR_SPECIAL;
1204 }
1205
db81d362 1206 lex_read_space(0);
63915d26 1207 } else if (!(spec->flags & FLAG_ANON_OK)) {
31534187 1208 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
db81d362 1209 } else {
1210 sv_catpvs(declarator, " (anon)");
1211 }
1212
63915d26 1213 /* we're a subroutine declaration */
c311cef3 1214 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1215 SAVEFREESV(PL_compcv);
1216
63915d26 1217 /* create outer block: '{' */
1218 save_ix = S_block_start(aTHX_ TRUE);
1219
1e0f1595 1220 /* initialize synthetic optree */
1221 Newx(prelude_sentinel, 1, OP *);
1222 *prelude_sentinel = NULL;
51a483f8 1223 sentinel_register(sen, prelude_sentinel, free_ptr_op_void);
1e0f1595 1224
db81d362 1225 /* parameters */
e158cf8f 1226 param_spec = NULL;
63915d26 1227
db81d362 1228 c = lex_peek_unichar(0);
1229 if (c == '(') {
e158cf8f 1230 OP **init_sentinel;
1231
1232 Newx(init_sentinel, 1, OP *);
1233 *init_sentinel = NULL;
51a483f8 1234 sentinel_register(sen, init_sentinel, free_ptr_op_void);
e158cf8f 1235
1236 Newx(param_spec, 1, ParamSpec);
1237 ps_init(param_spec);
e4648f19 1238 sentinel_register(sen, param_spec, ps_free_void);
db81d362 1239
1240 lex_read_unichar(0);
1241 lex_read_space(0);
1242
e158cf8f 1243 while ((c = lex_peek_unichar(0)) != ')') {
1244 int flags;
51a483f8 1245 SV *name, *type;
e158cf8f 1246 char sigil;
1247 PADOFFSET padoff;
c311cef3 1248
51a483f8 1249 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
c311cef3 1250
e158cf8f 1251 S_intro_my(aTHX);
63915d26 1252
e158cf8f 1253 sigil = SvPV_nolen(name)[0];
db81d362 1254
e158cf8f 1255 /* internal consistency */
1256 if (flags & PARAM_NAMED) {
1257 if (flags & PARAM_INVOCANT) {
1258 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
db81d362 1259 }
e158cf8f 1260 if (sigil != '$') {
1261 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
db81d362 1262 }
e158cf8f 1263 } else if (flags & PARAM_INVOCANT) {
1264 if (*init_sentinel) {
1265 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
db81d362 1266 }
e158cf8f 1267 if (sigil != '$') {
1268 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1269 }
1270 } else if (sigil != '$' && *init_sentinel) {
1271 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1272 }
db81d362 1273
e158cf8f 1274 /* external constraints */
1275 if (param_spec->slurpy.name) {
1276 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1277 }
1278 if (sigil != '$') {
1279 assert(!*init_sentinel);
1280 param_spec->slurpy.name = name;
1281 param_spec->slurpy.padoff = padoff;
51a483f8 1282 param_spec->slurpy.type = type;
e158cf8f 1283 continue;
1284 }
d8e5d540 1285
e158cf8f 1286 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1287 croak("In %"SVf": positional parameter %"SVf" can't appear after named parameter %"SVf"", SVfARG(declarator), SVfARG(name), SVfARG((param_spec->named_required.used ? param_spec->named_required.data[0] : param_spec->named_optional.data[0].param).name));
1288 }
d8e5d540 1289
e158cf8f 1290 if (flags & PARAM_INVOCANT) {
1291 if (param_spec->invocant.name) {
1292 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1293 }
1294 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1295 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
63915d26 1296 }
e158cf8f 1297 if (!(spec->flags & FLAG_INVOCANT)) {
1298 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1299 }
1300 param_spec->invocant.name = name;
1301 param_spec->invocant.padoff = padoff;
51a483f8 1302 param_spec->invocant.type = type;
e158cf8f 1303 continue;
1304 }
63915d26 1305
e158cf8f 1306 if (*init_sentinel && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1307 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1308 }
1e0f1595 1309
e158cf8f 1310 if (ps_contains(aTHX_ param_spec, name)) {
1311 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1312 }
1e0f1595 1313
e158cf8f 1314 if (flags & PARAM_NAMED) {
1315 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1316 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1e0f1595 1317 }
1318
e158cf8f 1319 if (*init_sentinel) {
1320 ParamInit *pi = piv_extend(&param_spec->named_optional);
1321 pi->param.name = name;
1322 pi->param.padoff = padoff;
51a483f8 1323 pi->param.type = type;
e158cf8f 1324 pi->init = *init_sentinel;
1325 *init_sentinel = NULL;
1326 param_spec->named_optional.used++;
1327 } else {
67fc1ddb 1328 Param *p;
1329
e158cf8f 1330 if (param_spec->positional_optional.used) {
1331 croak("In %"SVf": can't combine optional positional (%"SVf") and required named (%"SVf") parameters", SVfARG(declarator), SVfARG(param_spec->positional_optional.data[0].param.name), SVfARG(name));
1332 }
d8e5d540 1333
67fc1ddb 1334 p = pv_extend(&param_spec->named_required);
e158cf8f 1335 p->name = name;
1336 p->padoff = padoff;
51a483f8 1337 p->type = type;
e158cf8f 1338 param_spec->named_required.used++;
1339 }
1340 } else {
1341 if (*init_sentinel || param_spec->positional_optional.used) {
1342 ParamInit *pi = piv_extend(&param_spec->positional_optional);
1343 pi->param.name = name;
1344 pi->param.padoff = padoff;
51a483f8 1345 pi->param.type = type;
e158cf8f 1346 pi->init = *init_sentinel;
1347 *init_sentinel = NULL;
1348 param_spec->positional_optional.used++;
1349 } else {
1350 Param *p = pv_extend(&param_spec->positional_required);
1351 p->name = name;
1352 p->padoff = padoff;
51a483f8 1353 p->type = type;
e158cf8f 1354 param_spec->positional_required.used++;
db81d362 1355 }
1356 }
1357
e158cf8f 1358 }
1359 lex_read_unichar(0);
1360 lex_read_space(0);
1361 *init_sentinel = NULL;
db81d362 1362
e158cf8f 1363 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1364 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1365 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
db81d362 1366 }
e158cf8f 1367
1368 param_spec->invocant.name = spec->shift;
1369 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
db81d362 1370 }
1371 }
1372
1373 /* prototype */
c311cef3 1374 proto = NULL;
db81d362 1375 c = lex_peek_unichar(0);
1376 if (c == ':') {
1377 lex_read_unichar(0);
1378 lex_read_space(0);
1379
1380 c = lex_peek_unichar(0);
1381 if (c != '(') {
c311cef3 1382 lex_stuff_pvs(":", 0);
1383 c = ':';
db81d362 1384 } else {
31534187 1385 lex_read_unichar(0);
e4648f19 1386 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
f34187b8 1387 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
db81d362 1388 }
e4648f19 1389 my_check_prototype(aTHX_ sen, declarator, proto);
db81d362 1390 lex_read_space(0);
c311cef3 1391 c = lex_peek_unichar(0);
514bcaa6 1392 if (!(c == ':' || c == '{')) {
1393 lex_stuff_pvs(":", 0);
1394 c = ':';
1395 }
db81d362 1396 }
1397 }
1398
db81d362 1399 /* attributes */
c311cef3 1400 Newx(attrs_sentinel, 1, OP *);
1401 *attrs_sentinel = NULL;
51a483f8 1402 sentinel_register(sen, attrs_sentinel, free_ptr_op_void);
c311cef3 1403
63915d26 1404 if (c == ':' || c == '{') /* '}' - hi, vim */ {
c311cef3 1405
1406 /* kludge default attributes in */
1407 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1408 lex_stuff_sv(spec->attrs, 0);
1409 c = ':';
1410 }
b72eb6ee 1411
db81d362 1412 if (c == ':') {
db81d362 1413 lex_read_unichar(0);
1414 lex_read_space(0);
db81d362 1415 c = lex_peek_unichar(0);
c311cef3 1416
1417 for (;;) {
1418 SV *attr;
1419
e4648f19 1420 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
c311cef3 1421 break;
db81d362 1422 }
c311cef3 1423
db81d362 1424 lex_read_space(0);
1425 c = lex_peek_unichar(0);
c311cef3 1426
1427 if (c != '(') {
1428 if (sv_eq_pvs(attr, "lvalue")) {
1429 builtin_attrs |= MY_ATTR_LVALUE;
1430 attr = NULL;
1431 } else if (sv_eq_pvs(attr, "method")) {
1432 builtin_attrs |= MY_ATTR_METHOD;
1433 attr = NULL;
1434 }
1435 } else {
31534187 1436 SV *sv;
1437 lex_read_unichar(0);
e4648f19 1438 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
c311cef3 1439 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1440 }
31534187 1441 sv_catpvs(attr, "(");
c311cef3 1442 sv_catsv(attr, sv);
31534187 1443 sv_catpvs(attr, ")");
c311cef3 1444
1445 lex_read_space(0);
1446 c = lex_peek_unichar(0);
1447 }
1448
1449 if (attr) {
fc634bba 1450 *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr)));
c311cef3 1451 }
1452
1453 if (c == ':') {
1454 lex_read_unichar(0);
1455 lex_read_space(0);
1456 c = lex_peek_unichar(0);
1457 }
db81d362 1458 }
1459 }
1460 }
1461
1462 /* body */
63915d26 1463 if (c != '{') /* '}' - hi, vim */ {
85bc3fbd 1464 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
db81d362 1465 }
c311cef3 1466
63915d26 1467 /* surprise predeclaration! */
1468 if (saw_name) {
1469 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1470 starts parsing the body */
1471 const I32 sub_ix = start_subparse(FALSE, 0);
1472 SAVEFREESV(PL_compcv);
1473
1474 SvREFCNT_inc_simple_void(PL_compcv);
1475
1476 newATTRSUB(
1477 sub_ix,
fc634bba 1478 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1479 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
63915d26 1480 NULL,
1481 NULL
1482 );
1483 }
1484
c311cef3 1485 if (builtin_attrs & MY_ATTR_LVALUE) {
1486 CvLVALUE_on(PL_compcv);
db81d362 1487 }
c311cef3 1488 if (builtin_attrs & MY_ATTR_METHOD) {
1489 CvMETHOD_on(PL_compcv);
1490 }
1491 if (builtin_attrs & MY_ATTR_SPECIAL) {
1492 CvSPECIAL_on(PL_compcv);
db81d362 1493 }
1494
e158cf8f 1495 /* check number of arguments */
1e0f1595 1496 if (spec->flags & FLAG_CHECK_NARGS) {
e158cf8f 1497 int amin, amax;
abccbe86 1498
e158cf8f 1499 amin = args_min(aTHX_ param_spec, spec);
1500 if (amin > 0) {
51a483f8 1501 OP *chk, *cond, *err, *xcroak;
63915d26 1502
fc634bba 1503 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1504 err = newBINOP(
1505 OP_CONCAT, 0,
1506 err,
1507 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1508 );
1509 err = newBINOP(
1510 OP_CONCAT, 0,
1511 err,
1512 mkconstpvs(")")
1513 );
63915d26 1514
51a483f8 1515 xcroak = newCVREF(OPf_WANT_SCALAR,
1516 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1e0f1595 1517 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1518 op_append_elem(OP_LIST, err, xcroak));
63915d26 1519
1e0f1595 1520 cond = newBINOP(OP_LT, 0,
5f50e017 1521 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1522 mkconstiv(aTHX_ amin));
1e0f1595 1523 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1524
1e0f1595 1525 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1526 }
abccbe86 1527
e158cf8f 1528 amax = args_max(param_spec);
1529 if (amax >= 0) {
51a483f8 1530 OP *chk, *cond, *err, *xcroak;
63915d26 1531
fc634bba 1532 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1533 err = newBINOP(
1534 OP_CONCAT, 0,
1535 err,
1536 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1537 );
1538 err = newBINOP(
1539 OP_CONCAT, 0,
1540 err,
1541 mkconstpvs(")")
1542 );
63915d26 1543
51a483f8 1544 xcroak = newCVREF(
fc634bba 1545 OPf_WANT_SCALAR,
1546 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1547 );
1e0f1595 1548 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1549 op_append_elem(OP_LIST, err, xcroak));
63915d26 1550
fc634bba 1551 cond = newBINOP(
1552 OP_GT, 0,
1553 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1554 mkconstiv(aTHX_ amax)
1555 );
1e0f1595 1556 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1557
1e0f1595 1558 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1559 }
e158cf8f 1560
1561 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
51a483f8 1562 OP *chk, *cond, *err, *xcroak;
e158cf8f 1563 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
63915d26 1564
fc634bba 1565 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
63915d26 1566
51a483f8 1567 xcroak = newCVREF(
fc634bba 1568 OPf_WANT_SCALAR,
1569 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1570 );
1e0f1595 1571 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1572 op_append_elem(OP_LIST, err, xcroak));
63915d26 1573
1e0f1595 1574 cond = newBINOP(OP_GT, 0,
5f50e017 1575 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1576 mkconstiv(aTHX_ fixed));
e158cf8f 1577 cond = newLOGOP(OP_AND, 0,
fc634bba 1578 cond,
1579 newBINOP(OP_MODULO, 0,
1580 fixed
1581 ? newBINOP(OP_SUBTRACT, 0,
1582 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1583 mkconstiv(aTHX_ fixed))
1584 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1585 mkconstiv(aTHX_ 2)));
1e0f1595 1586 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1587
1e0f1595 1588 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
c311cef3 1589 }
1e0f1595 1590 }
c311cef3 1591
e158cf8f 1592 if (!param_spec) {
1593 /* my $invocant = shift; */
1594 if (SvTRUE(spec->shift)) {
1595 OP *var;
abccbe86 1596
e158cf8f 1597 var = my_var(
1598 aTHX_
1599 OPf_MOD | (OPpLVAL_INTRO << 8),
1600 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1601 );
1602 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
c311cef3 1603
e158cf8f 1604 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1605 }
1606 } else {
1607 /* my $invocant = shift; */
1608 if (param_spec->invocant.name) {
1609 OP *var;
c311cef3 1610
e158cf8f 1611 var = my_var(
1612 aTHX_
1613 OPf_MOD | (OPpLVAL_INTRO << 8),
1614 param_spec->invocant.padoff
1615 );
1616 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1e0f1595 1617
e158cf8f 1618 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
51a483f8 1619
1620 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1621 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, &param_spec->invocant)));
1622 }
c311cef3 1623 }
1624
e158cf8f 1625 /* my (...) = @_; */
1626 {
1627 OP *lhs;
1628 size_t i, lim;
63915d26 1629
e158cf8f 1630 lhs = NULL;
63915d26 1631
e158cf8f 1632 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1633 OP *const var = my_var(
1634 aTHX_
1635 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1636 param_spec->positional_required.data[i].padoff
1637 );
1638 lhs = op_append_elem(OP_LIST, lhs, var);
1639 }
63915d26 1640
e158cf8f 1641 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1642 OP *const var = my_var(
1643 aTHX_
1644 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1645 param_spec->positional_optional.data[i].param.padoff
1646 );
1647 lhs = op_append_elem(OP_LIST, lhs, var);
1648 }
63915d26 1649
fc634bba 1650 {
1651 PADOFFSET padoff;
1652 I32 type;
1653 bool slurpy_hash;
1654
1655 /*
1656 * cases:
1657 * 1) no named params
1658 * 1.1) slurpy
1659 * => put it in
1660 * 1.2) no slurpy
1661 * => nop
1662 * 2) named params
1663 * 2.1) no slurpy
1664 * => synthetic %{rest}
1665 * 2.2) slurpy is a hash
1666 * => put it in
1667 * 2.3) slurpy is an array
1668 * => synthetic %{rest}
1669 * remember to declare array later
1670 */
1671
1672 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1673 if (!count_named_params(param_spec)) {
1674 if (param_spec->slurpy.name) {
1675 padoff = param_spec->slurpy.padoff;
1676 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1677 } else {
1678 padoff = NOT_IN_PAD;
1679 type = OP_PADSV;
1680 }
1681 } else if (slurpy_hash) {
1682 padoff = param_spec->slurpy.padoff;
1683 type = OP_PADHV;
e158cf8f 1684 } else {
fc634bba 1685 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1686 type = OP_PADHV;
1687 }
1688
1689 if (padoff != NOT_IN_PAD) {
e158cf8f 1690 OP *const var = my_var_g(
1691 aTHX_
fc634bba 1692 type,
e158cf8f 1693 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
fc634bba 1694 padoff
e158cf8f 1695 );
fc634bba 1696
e158cf8f 1697 lhs = op_append_elem(OP_LIST, lhs, var);
fc634bba 1698
1699 if (type == OP_PADHV) {
1700 param_spec->rest_hash = padoff;
1701 }
e158cf8f 1702 }
1703 }
63915d26 1704
e158cf8f 1705 if (lhs) {
1706 OP *rhs;
1707 lhs->op_flags |= OPf_PARENS;
1708 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1709
1710 *prelude_sentinel = op_append_list(
1711 OP_LINESEQ, *prelude_sentinel,
1712 newSTATEOP(
1713 0, NULL,
1714 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1715 )
1716 );
1717 }
1718 }
63915d26 1719
fc634bba 1720 /* default positional arguments */
e158cf8f 1721 {
1722 size_t i, lim, req;
1723 OP *nest;
63915d26 1724
e158cf8f 1725 nest = NULL;
63915d26 1726
e158cf8f 1727 req = param_spec->positional_required.used;
1728 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1729 ParamInit *cur = &param_spec->positional_optional.data[i];
1730 OP *var, *cond;
63915d26 1731
e158cf8f 1732 cond = newBINOP(
1733 OP_LT, 0,
1734 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1735 mkconstiv(aTHX_ req + i + 1)
e158cf8f 1736 );
63915d26 1737
e158cf8f 1738 var = my_var(aTHX_ 0, cur->param.padoff);
63915d26 1739
e158cf8f 1740 nest = op_append_list(
1741 OP_LINESEQ, nest,
1742 newASSIGNOP(OPf_STACKED, var, 0, cur->init)
1743 );
1744 cur->init = NULL;
1745 nest = newCONDOP(
1746 0,
1747 cond,
1748 nest,
1749 NULL
1750 );
1751 }
1e0f1595 1752
e158cf8f 1753 *prelude_sentinel = op_append_list(
1754 OP_LINESEQ, *prelude_sentinel,
1755 nest
1756 );
c311cef3 1757 }
1758
e158cf8f 1759 /* named parameters */
1760 if (count_named_params(param_spec)) {
fc634bba 1761 size_t i, lim;
1762
1763 assert(param_spec->rest_hash != NOT_IN_PAD);
1764
1765 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1766 Param *cur = &param_spec->named_required.data[i];
1767 size_t n;
1768 char *p = SvPV(cur->name, n);
1769 OP *var, *cond;
1770
1771 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1772
1773 if (spec->flags & FLAG_CHECK_NARGS) {
51a483f8 1774 OP *xcroak, *msg;
fc634bba 1775
1776 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1777 var = newUNOP(OP_DELETE, 0, var);
1778
1779 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
51a483f8 1780 xcroak = newCVREF(
fc634bba 1781 OPf_WANT_SCALAR,
1782 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1783 );
51a483f8 1784 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1785
1786 cond = newUNOP(OP_EXISTS, 0, cond);
1787
51a483f8 1788 cond = newCONDOP(0, cond, var, xcroak);
fc634bba 1789 }
1790
1791 var = my_var(
1792 aTHX_
1793 OPf_MOD | (OPpLVAL_INTRO << 8),
1794 cur->padoff
1795 );
1796 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1797
1798 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1799 }
1800
1801 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1802 ParamInit *cur = &param_spec->named_optional.data[i];
1803 size_t n;
1804 char *p = SvPV(cur->param.name, n);
1805 OP *var, *cond;
1806
1807 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1808 var = newUNOP(OP_DELETE, 0, var);
1809
1810 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1811 cond = newUNOP(OP_EXISTS, 0, cond);
1812
1813 cond = newCONDOP(0, cond, var, cur->init);
1814 cur->init = NULL;
1815
1816 var = my_var(
1817 aTHX_
1818 OPf_MOD | (OPpLVAL_INTRO << 8),
1819 cur->param.padoff
1820 );
1821 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1822
1823 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1824 }
1825
1826 if (!param_spec->slurpy.name) {
1827 if (spec->flags & FLAG_CHECK_NARGS) {
1828 /* croak if %{rest} */
51a483f8 1829 OP *xcroak, *cond, *keys, *msg;
fc634bba 1830
1831 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1832 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1833 {
1834 OP *first, *mid, *last;
1835
1836 last = keys;
1837
1838 mid = mkconstpvs(", ");
1839 mid->op_sibling = last;
1840
1841 first = newOP(OP_PUSHMARK, 0);
1842
1843 keys = newLISTOP(OP_JOIN, 0, first, mid);
1844 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1845 ((LISTOP *)keys)->op_last = last;
1846 }
1847
1848 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1849 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1850
51a483f8 1851 xcroak = newCVREF(
fc634bba 1852 OPf_WANT_SCALAR,
1853 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1854 );
51a483f8 1855 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1856
1857 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
51a483f8 1858 xcroak = newCONDOP(0, cond, xcroak, NULL);
fc634bba 1859
51a483f8 1860 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, xcroak));
fc634bba 1861 } else {
1862 OP *clear;
1863
1864 clear = newASSIGNOP(
1865 OPf_STACKED,
1866 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1867 0,
1868 newNULLLIST()
1869 );
1870
1871 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1872 }
1873 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1874 OP *var, *clear;
1875
1876 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1877
1878 var = my_var_g(
1879 aTHX_
1880 OP_PADAV,
1881 OPf_MOD | (OPpLVAL_INTRO << 8),
1882 param_spec->slurpy.padoff
1883 );
1884
1885 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1886
1887 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1888
1889 clear = newASSIGNOP(
1890 OPf_STACKED,
1891 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1892 0,
1893 newNULLLIST()
1894 );
1895
1896 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1897 }
1898 }
51a483f8 1899
1900 if (spec->flags & FLAG_CHECK_TARGS) {
1901 size_t i, lim, base;
1902
1903 base = 1;
1904 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1905 Param *cur = &param_spec->positional_required.data[i];
1906
1907 if (cur->type) {
1908 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1909 }
1910 }
1911 base += i;
1912
1913 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1914 Param *cur = &param_spec->positional_optional.data[i].param;
1915
1916 if (cur->type) {
1917 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1918 }
1919 }
1920 base += i;
1921
1922 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1923 Param *cur = &param_spec->named_required.data[i];
1924
1925 if (cur->type) {
1926 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1927 }
1928 }
1929 base += i;
1930
1931 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1932 Param *cur = &param_spec->named_optional.data[i].param;
1933
1934 if (cur->type) {
1935 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1936 }
1937 }
1938 base += i;
1939
1940 if (param_spec->slurpy.type) {
1941 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
a8492ba4 1942 OP *check, *list, *loop;
51a483f8 1943
a8492ba4 1944 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
51a483f8 1945
1946 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1947 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1948 } else {
1949 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1950 list = newUNOP(OP_VALUES, 0, list);
1951 }
1952
a8492ba4 1953 loop = newFOROP(0, NULL, list, check, NULL);
51a483f8 1954
1955 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, loop));
1956 }
1957 }
1e0f1595 1958 }
c311cef3 1959
1e0f1595 1960 /* finally let perl parse the actual subroutine body */
1961 body = parse_block(0);
c311cef3 1962
1e0f1595 1963 /* add '();' to make function return nothing by default */
1964 /* (otherwise the invisible parameter initialization can "leak" into
1965 the return value: fun ($x) {}->("asdf", 0) == 2) */
1966 if (*prelude_sentinel) {
1967 body = newSTATEOP(0, NULL, body);
db81d362 1968 }
1969
1e0f1595 1970 body = op_append_list(OP_LINESEQ, *prelude_sentinel, body);
1971 *prelude_sentinel = NULL;
1972
c311cef3 1973 /* it's go time. */
1974 {
53c979f0 1975 CV *cv;
c311cef3 1976 OP *const attrs = *attrs_sentinel;
1977 *attrs_sentinel = NULL;
53c979f0 1978
c311cef3 1979 SvREFCNT_inc_simple_void(PL_compcv);
1980
63915d26 1981 /* close outer block: '}' */
1982 S_block_end(aTHX_ save_ix, body);
1983
53c979f0 1984 cv = newATTRSUB(
c311cef3 1985 floor_ix,
53c979f0 1986 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
c311cef3 1987 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1988 attrs,
1989 body
1990 );
53c979f0 1991
1992 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1993
1994 if (saw_name) {
1995 *pop = newOP(OP_NULL, 0);
1996 return KEYWORD_PLUGIN_STMT;
1997 }
1998
1999 *pop = newUNOP(
2000 OP_REFGEN, 0,
2001 newSVOP(
2002 OP_ANONCODE, 0,
2003 (SV *)cv
2004 )
2005 );
2006 return KEYWORD_PLUGIN_EXPR;
db81d362 2007 }
db81d362 2008}
2009
2010static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
63915d26 2011 KWSpec spec;
db81d362 2012 int ret;
e4648f19 2013 Sentinel sen = { NULL };
db81d362 2014
e4648f19 2015 ENTER;
db81d362 2016 SAVETMPS;
2017
e4648f19 2018 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
2019
2020 if (kw_flags(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2021 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
db81d362 2022 } else {
7dd35535 2023 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
db81d362 2024 }
2025
2026 FREETMPS;
e4648f19 2027 LEAVE;
db81d362 2028
2029 return ret;
2030}
2031
2032WARNINGS_RESET
2033
53c979f0 2034MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
db81d362 2035PROTOTYPES: ENABLE
2036
53c979f0 2037UV
2038fp__cv_root(sv)
2039 SV * sv
2040 PREINIT:
79bce2d4 2041 CV *xcv;
53c979f0 2042 HV *hv;
2043 GV *gv;
2044 CODE:
79bce2d4 2045 xcv = sv_2cv(sv, &hv, &gv, 0);
2046 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
53c979f0 2047 OUTPUT:
2048 RETVAL
2049
db81d362 2050BOOT:
2051WARNINGS_ENABLE {
2052 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
426a4d69 2053 /**/
d8e5d540 2054 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2055 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
63915d26 2056 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
d8e5d540 2057 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2058 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
e158cf8f 2059 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
51a483f8 2060 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2061 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
db81d362 2062 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
d8e5d540 2063 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2064 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2065 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
426a4d69 2066 /**/
db81d362 2067 next_keyword_plugin = PL_keyword_plugin;
2068 PL_keyword_plugin = my_keyword_plugin;
2069} WARNINGS_RESET
Unnamed repository; edit this file to name it for gitweb.