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