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don't test POD for end users
[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;
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
db81d362 160
ed95eeff 161#if HAVE_PERL_VERSION(5, 17, 2)
162 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
163#else
164 #define MY_OP_SLABBED(O) 0
165#endif
166
167DEFSTRUCT(OpGuard) {
168 OP *op;
169 bool needs_freed;
170};
171
172static void op_guard_init(OpGuard *p) {
173 p->op = NULL;
174 p->needs_freed = FALSE;
175}
176
177static OpGuard op_guard_transfer(OpGuard *p) {
178 OpGuard r = *p;
179 op_guard_init(p);
180 return r;
181}
182
183static OP *op_guard_relinquish(OpGuard *p) {
184 OP *o = p->op;
185 op_guard_init(p);
186 return o;
187}
188
189static void op_guard_update(OpGuard *p, OP *o) {
190 p->op = o;
191 p->needs_freed = o && !MY_OP_SLABBED(o);
192}
193
194static void op_guard_clear(pTHX_ OpGuard *p) {
195 if (p->needs_freed) {
196 op_free(p->op);
197 }
198}
199
200static void free_op_guard_void(pTHX_ void *vp) {
201 OpGuard *p = vp;
202 op_guard_clear(aTHX_ p);
203 Safefree(p);
c311cef3 204}
205
51a483f8 206static void free_op_void(pTHX_ void *vp) {
207 OP *p = vp;
208 op_free(p);
209}
210
59016bfb 211#define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
c311cef3 212
59016bfb 213static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
c311cef3 214 STRLEN sv_len;
215 const char *sv_p = SvPV(sv, sv_len);
59016bfb 216 return memcmp(sv_p, p, n) == 0;
c311cef3 217}
218
219
220#include "padop_on_crack.c.inc"
221
222
c311cef3 223enum {
224 MY_ATTR_LVALUE = 0x01,
225 MY_ATTR_METHOD = 0x02,
226 MY_ATTR_SPECIAL = 0x04
227};
228
31534187 229static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
230 char ds[UTF8_MAXBYTES + 1], *d;
67fc1ddb 231 d = (char *)uvchr_to_utf8((U8 *)ds, c);
31534187 232 if (d - ds > 1) {
233 sv_utf8_upgrade(sv);
234 }
235 sv_catpvn(sv, ds, d - ds);
236}
237
31534187 238
e6d62383 239#define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
240#define MY_UNI_IDCONT(C) isALNUM_uni(C)
31534187 241
e4648f19 242static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
31534187 243 bool at_start, at_substart;
244 I32 c;
e4648f19 245 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 246 if (lex_bufutf8()) {
247 SvUTF8_on(sv);
248 }
249
250 at_start = at_substart = TRUE;
251 c = lex_peek_unichar(0);
252
253 while (c != -1) {
e6d62383 254 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
31534187 255 lex_read_unichar(0);
256 my_sv_cat_c(aTHX_ sv, c);
257 at_substart = FALSE;
258 c = lex_peek_unichar(0);
259 } else if (allow_package && !at_substart && c == '\'') {
260 lex_read_unichar(0);
261 c = lex_peek_unichar(0);
e6d62383 262 if (!MY_UNI_IDFIRST(c)) {
31534187 263 lex_stuff_pvs("'", 0);
264 break;
265 }
266 sv_catpvs(sv, "'");
267 at_substart = TRUE;
268 } else if (allow_package && (at_start || !at_substart) && c == ':') {
269 lex_read_unichar(0);
270 if (lex_peek_unichar(0) != ':') {
271 lex_stuff_pvs(":", 0);
272 break;
273 }
274 lex_read_unichar(0);
275 c = lex_peek_unichar(0);
e6d62383 276 if (!MY_UNI_IDFIRST(c)) {
31534187 277 lex_stuff_pvs("::", 0);
278 break;
279 }
280 sv_catpvs(sv, "::");
281 at_substart = TRUE;
282 } else {
283 break;
284 }
285 at_start = FALSE;
286 }
287
288 return SvCUR(sv) ? sv : NULL;
289}
290
e4648f19 291static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
31534187 292 I32 c, nesting;
293 SV *sv;
294 line_t start;
295
296 start = CopLINE(PL_curcop);
297
e4648f19 298 sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 299 if (lex_bufutf8()) {
300 SvUTF8_on(sv);
301 }
302
303 nesting = 0;
304 for (;;) {
305 c = lex_read_unichar(0);
306 if (c == EOF) {
307 CopLINE_set(PL_curcop, start);
308 return NULL;
309 }
310
311 if (c == '\\') {
312 c = lex_read_unichar(0);
313 if (c == EOF) {
314 CopLINE_set(PL_curcop, start);
315 return NULL;
316 }
317 if (keep_backslash || (c != '(' && c != ')')) {
318 sv_catpvs(sv, "\\");
319 }
320 } else if (c == '(') {
321 nesting++;
322 } else if (c == ')') {
323 if (!nesting) {
324 break;
325 }
326 nesting--;
327 }
328
329 my_sv_cat_c(aTHX_ sv, c);
330 }
331
332 return sv;
333}
334
e4648f19 335static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
31534187 336 char *start, *r, *w, *end;
337 STRLEN len;
338
339 /* strip spaces */
340 start = SvPV(proto, len);
341 end = start + len;
342
343 for (w = r = start; r < end; r++) {
344 if (!isSPACE(*r)) {
345 *w++ = *r;
346 }
347 }
348 *w = '\0';
349 SvCUR_set(proto, w - start);
350 end = w;
351 len = end - start;
352
353 if (!ckWARN(WARN_ILLEGALPROTO)) {
354 return;
355 }
356
357 /* check for bad characters */
358 if (strspn(start, "$@%*;[]&\\_+") != len) {
e4648f19 359 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
31534187 360 warner(
361 packWARN(WARN_ILLEGALPROTO),
362 "Illegal character in prototype for %"SVf" : %s",
363 SVfARG(declarator),
364 SvUTF8(proto)
365 ? sv_uni_display(
366 dsv,
367 proto,
368 len,
369 UNI_DISPLAY_ISPRINT
370 )
371 : pv_pretty(dsv, start, len, 60, NULL, NULL,
372 PERL_PV_ESCAPE_NONASCII
373 )
374 );
375 return;
376 }
377
378 for (r = start; r < end; r++) {
379 switch (*r) {
380 default:
381 warner(
382 packWARN(WARN_ILLEGALPROTO),
383 "Illegal character in prototype for %"SVf" : %s",
384 SVfARG(declarator), r
385 );
386 return;
387
388 case '_':
389 if (r[1] && !strchr(";@%", *r)) {
390 warner(
391 packWARN(WARN_ILLEGALPROTO),
392 "Illegal character after '_' in prototype for %"SVf" : %s",
393 SVfARG(declarator), r
394 );
395 return;
396 }
397 break;
398
399 case '@':
400 case '%':
401 if (r[1]) {
402 warner(
403 packWARN(WARN_ILLEGALPROTO),
404 "prototype after '%c' for %"SVf": %s",
405 *r, SVfARG(declarator), r + 1
406 );
407 return;
408 }
409 break;
410
411 case '\\':
412 r++;
413 if (strchr("$@%&*", *r)) {
414 break;
415 }
416 if (*r == '[') {
417 r++;
418 for (; r < end && *r != ']'; r++) {
419 if (!strchr("$@%&*", *r)) {
420 break;
421 }
422 }
423 if (*r == ']' && r[-1] != '[') {
424 break;
425 }
426 }
427 warner(
428 packWARN(WARN_ILLEGALPROTO),
429 "Illegal character after '\\' in prototype for %"SVf" : %s",
430 SVfARG(declarator), r
431 );
432 return;
433
434 case '$':
435 case '*':
436 case '&':
437 case ';':
438 case '+':
439 break;
440 }
441 }
442}
443
51a483f8 444static SV *parse_type(pTHX_ Sentinel, const SV *);
445
446static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
447 I32 c;
448 SV *t;
449
450 t = my_scan_word(aTHX_ sen, TRUE);
451 lex_read_space(0);
452
453 c = lex_peek_unichar(0);
454 if (c == '[') {
455 SV *u;
456
457 lex_read_unichar(0);
458 lex_read_space(0);
459 my_sv_cat_c(aTHX_ t, c);
460
461 u = parse_type(aTHX_ sen, declarator);
462 sv_catsv(t, u);
463
464 c = lex_peek_unichar(0);
465 if (c != ']') {
466 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
467 }
468 lex_read_unichar(0);
469 lex_read_space(0);
470
471 my_sv_cat_c(aTHX_ t, c);
472 }
473
474 return t;
475}
476
477static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
478 I32 c;
479 SV *t;
480
481 t = parse_type_paramd(aTHX_ sen, declarator);
482
483 c = lex_peek_unichar(0);
484 while (c == '|') {
485 SV *u;
486
487 lex_read_unichar(0);
488 lex_read_space(0);
489
490 my_sv_cat_c(aTHX_ t, c);
491 u = parse_type_paramd(aTHX_ sen, declarator);
492 sv_catsv(t, u);
493
494 c = lex_peek_unichar(0);
495 }
496
497 return t;
498}
499
500static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
501 SV *t;
502 int n;
503 dSP;
504
505 ENTER;
506 SAVETMPS;
507
508 PUSHMARK(SP);
509 EXTEND(SP, 1);
510 PUSHs(name);
511 PUTBACK;
512
700071de 513 n = call_pv("Moose::Util::TypeConstraints::find_or_create_isa_type_constraint", G_SCALAR);
51a483f8 514 SPAGAIN;
515
516 assert(n == 1);
a8492ba4 517 /* don't warn about n being unused if assert() is compiled out */
518 n = n;
519
51a483f8 520 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
521
522 PUTBACK;
523 FREETMPS;
524 LEAVE;
525
526 if (!SvTRUE(t)) {
527 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
528 }
529
530 return t;
531}
532
e158cf8f 533
534DEFSTRUCT(Param) {
535 SV *name;
536 PADOFFSET padoff;
51a483f8 537 SV *type;
e158cf8f 538};
539
540DEFSTRUCT(ParamInit) {
541 Param param;
ed95eeff 542 OpGuard init;
e158cf8f 543};
544
545#define VEC(B) B ## _Vec
546
547#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
548 B (*data); \
549 size_t used, size; \
550}
551
552DEFVECTOR(Param);
553DEFVECTOR(ParamInit);
554
555#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
556 p->used = 0; \
557 p->size = 23; \
558 Newx(p->data, p->size, B); \
559} static void N(VEC(B) *)
560
561DEFSTRUCT(ParamSpec) {
562 Param invocant;
563 VEC(Param) positional_required;
564 VEC(ParamInit) positional_optional;
565 VEC(Param) named_required;
566 VEC(ParamInit) named_optional;
567 Param slurpy;
fc634bba 568 PADOFFSET rest_hash;
e158cf8f 569};
570
571DEFVECTOR_INIT(pv_init, Param);
572DEFVECTOR_INIT(piv_init, ParamInit);
573
574static void p_init(Param *p) {
575 p->name = NULL;
576 p->padoff = NOT_IN_PAD;
51a483f8 577 p->type = NULL;
e158cf8f 578}
579
580static void ps_init(ParamSpec *ps) {
581 p_init(&ps->invocant);
582 pv_init(&ps->positional_required);
583 piv_init(&ps->positional_optional);
584 pv_init(&ps->named_required);
585 piv_init(&ps->named_optional);
586 p_init(&ps->slurpy);
fc634bba 587 ps->rest_hash = NOT_IN_PAD;
e158cf8f 588}
589
590#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
591 assert(p->used <= p->size); \
592 if (p->used == p->size) { \
593 const size_t n = p->size / 2 * 3 + 1; \
594 Renew(p->data, n, B); \
595 p->size = n; \
596 } \
597 return &p->data[p->used]; \
598} static B (*N(VEC(B) *))
599
600DEFVECTOR_EXTEND(pv_extend, Param);
601DEFVECTOR_EXTEND(piv_extend, ParamInit);
602
603#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
604 while (p->used) { \
605 p->used--; \
606 F(aTHX_ &p->data[p->used]); \
607 } \
608 Safefree(p->data); \
609 p->data = NULL; \
610 p->size = 0; \
611} static void N(pTHX_ VEC(B) *)
612
613static void p_clear(pTHX_ Param *p) {
614 p->name = NULL;
615 p->padoff = NOT_IN_PAD;
51a483f8 616 p->type = NULL;
e158cf8f 617}
618
619static void pi_clear(pTHX_ ParamInit *pi) {
620 p_clear(aTHX_ &pi->param);
ed95eeff 621 op_guard_clear(aTHX_ &pi->init);
e158cf8f 622}
623
624DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
625DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
626
627static void ps_clear(pTHX_ ParamSpec *ps) {
628 p_clear(aTHX_ &ps->invocant);
629
630 pv_clear(aTHX_ &ps->positional_required);
631 piv_clear(aTHX_ &ps->positional_optional);
632
633 pv_clear(aTHX_ &ps->named_required);
634 piv_clear(aTHX_ &ps->named_optional);
635
636 p_clear(aTHX_ &ps->slurpy);
637}
638
639static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
640 size_t i, lim;
641
642 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
643 return 1;
644 }
645
646 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
647 if (sv_eq(sv, ps->positional_required.data[i].name)) {
648 return 1;
649 }
650 }
651
652 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
653 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
654 return 1;
655 }
656 }
657
658 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
659 if (sv_eq(sv, ps->named_required.data[i].name)) {
660 return 1;
661 }
662 }
663
664 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
665 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
666 return 1;
667 }
668 }
669
670 return 0;
671}
672
673static void ps_free_void(pTHX_ void *p) {
674 ps_clear(aTHX_ p);
675 Safefree(p);
676}
677
678static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
679 int n = 0;
680 if (!ps) {
681 return SvTRUE(ks->shift) ? 1 : 0;
682 }
683 if (ps->invocant.name) {
684 n++;
685 }
686 n += ps->positional_required.used;
687 n += ps->named_required.used * 2;
688 return n;
689}
690
691static int args_max(const ParamSpec *ps) {
692 int n = 0;
693 if (!ps) {
694 return -1;
695 }
696 if (ps->invocant.name) {
697 n++;
698 }
699 n += ps->positional_required.used;
700 n += ps->positional_optional.used;
701 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
702 n = -1;
703 }
704 return n;
705}
706
707static size_t count_positional_params(const ParamSpec *ps) {
708 return ps->positional_required.used + ps->positional_optional.used;
709}
710
711static size_t count_named_params(const ParamSpec *ps) {
712 return ps->named_required.used + ps->named_optional.used;
713}
714
51a483f8 715static void my_require(pTHX_ const char *file) {
c90fb97a 716 SV *err;
51a483f8 717 require_pv(file);
c90fb97a 718 err = ERRSV;
719 if (SvTRUE(err)) {
720 croak_sv(err);
51a483f8 721 }
722}
723
724static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
725 SV *sv;
726 CV *cv;
727 dSP;
728
729 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
730
731 ENTER;
732 SAVETMPS;
733
734 PUSHMARK(SP);
735 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
736 SPAGAIN;
737 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
738
739 PUTBACK;
740 FREETMPS;
741 LEAVE;
742
743 return sv;
744}
745
e158cf8f 746enum {
747 PARAM_INVOCANT = 0x01,
748 PARAM_NAMED = 0x02
749};
750
e158cf8f 751static PADOFFSET parse_param(
752 pTHX_
e4648f19 753 Sentinel sen,
e158cf8f 754 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
ed95eeff 755 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
e158cf8f 756) {
757 I32 c;
758 char sigil;
a4c13d40 759 SV *name;
e158cf8f 760
ed95eeff 761 assert(!ginit->op);
e158cf8f 762 *pflags = 0;
51a483f8 763 *ptype = NULL;
e158cf8f 764
765 c = lex_peek_unichar(0);
766
51a483f8 767 if (spec->flags & FLAG_TYPES_OK) {
768 if (c == '(') {
769 I32 floor;
770 OP *expr;
a4c13d40 771 Resource *expr_sentinel;
51a483f8 772
773 lex_read_unichar(0);
774
a4c13d40 775 floor = start_subparse(FALSE, 0);
776 SAVEFREESV(PL_compcv);
777 CvSPECIAL_on(PL_compcv);
51a483f8 778
779 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
780 croak("In %"SVf": invalid type expression", SVfARG(declarator));
781 }
ed95eeff 782 if (MY_OP_SLABBED(expr)) {
783 expr_sentinel = NULL;
784 } else {
785 expr_sentinel = sentinel_register(sen, expr, free_op_void);
786 }
51a483f8 787
788 lex_read_space(0);
789 c = lex_peek_unichar(0);
790 if (c != ')') {
791 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
792 }
793 lex_read_unichar(0);
794 lex_read_space(0);
795
a4c13d40 796 SvREFCNT_inc_simple_void(PL_compcv);
ed95eeff 797 if (expr_sentinel) {
798 sentinel_disarm(expr_sentinel);
799 }
51a483f8 800 *ptype = my_eval(aTHX_ sen, floor, expr);
a4c13d40 801 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 802 if (!sv_isobject(*ptype)) {
803 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
804 }
805
806 c = lex_peek_unichar(0);
e6d62383 807 } else if (MY_UNI_IDFIRST(c)) {
a4c13d40 808 *ptype = parse_type(aTHX_ sen, declarator);
51a483f8 809 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
a4c13d40 810 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 811
812 c = lex_peek_unichar(0);
813 }
814 }
815
e158cf8f 816 if (c == ':') {
817 lex_read_unichar(0);
818 lex_read_space(0);
819
820 *pflags |= PARAM_NAMED;
821
822 c = lex_peek_unichar(0);
823 }
824
825 if (c == -1) {
826 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
827 }
51a483f8 828
e158cf8f 829 if (!(c == '$' || c == '@' || c == '%')) {
830 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
831 }
832
833 sigil = c;
834
835 lex_read_unichar(0);
836 lex_read_space(0);
837
e4648f19 838 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
e158cf8f 839 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
840 }
841 sv_insert(name, 0, 0, &sigil, 1);
842 *pname = name;
843
844 lex_read_space(0);
845 c = lex_peek_unichar(0);
846
847 if (c == '=') {
848 lex_read_unichar(0);
849 lex_read_space(0);
850
851
852 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
853 param_spec->invocant.name = spec->shift;
854 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
855 }
856
ed95eeff 857 op_guard_update(ginit, parse_termexpr(0));
e158cf8f 858
859 lex_read_space(0);
860 c = lex_peek_unichar(0);
861 }
862
863 if (c == ':') {
864 *pflags |= PARAM_INVOCANT;
865 lex_read_unichar(0);
866 lex_read_space(0);
867 } else if (c == ',') {
868 lex_read_unichar(0);
869 lex_read_space(0);
870 } else if (c != ')') {
871 if (c == -1) {
872 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
873 }
874 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
875 }
876
877 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
878}
879
880static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
881 OP *var = newOP(type, flags);
882 var->op_targ = padoff;
883 return var;
884}
885
886static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
887 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
888}
889
fc634bba 890static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
891 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
892 return newBINOP(OP_HELEM, 0, hv, k);
893}
894
895static OP *mkconstsv(pTHX_ SV *sv) {
896 return newSVOP(OP_CONST, 0, sv);
897}
898
899static OP *mkconstiv(pTHX_ IV i) {
900 return mkconstsv(aTHX_ newSViv(i));
901}
902
903static OP *mkconstpv(pTHX_ const char *p, size_t n) {
904 return mkconstsv(aTHX_ newSVpv(p, n));
905}
906
907#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
908
51a483f8 909static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
910 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
a8492ba4 911 OP *chk, *err, *msg, *xcroak;
51a483f8 912
913 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
914 {
915 OP *args = NULL;
916
917 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
918 args = op_append_elem(
919 OP_LIST, args,
920 padoff == NOT_IN_PAD
921 ? S_newDEFSVOP(aTHX)
922 : my_var(aTHX_ 0, padoff)
923 );
924 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
925
926 msg = args;
927 msg->op_type = OP_ENTERSUB;
928 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
929 msg->op_flags |= OPf_STACKED;
930 }
931
932 msg = newBINOP(OP_CONCAT, 0, err, msg);
933
934 xcroak = newCVREF(
935 OPf_WANT_SCALAR,
936 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
937 );
938 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
939
940 {
941 OP *args = NULL;
942
943 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
944 args = op_append_elem(
945 OP_LIST, args,
946 padoff == NOT_IN_PAD
947 ? S_newDEFSVOP(aTHX)
948 : my_var(aTHX_ 0, padoff)
949 );
950 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
951
952 chk = args;
953 chk->op_type = OP_ENTERSUB;
954 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
955 chk->op_flags |= OPf_STACKED;
956 }
957
958 chk = newLOGOP(OP_OR, 0, chk, xcroak);
959 return chk;
960}
961
962static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
963 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
964}
965
53c979f0 966static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
967 dSP;
968
969 ENTER;
970 SAVETMPS;
971
972 PUSHMARK(SP);
51a483f8 973 EXTEND(SP, 10);
53c979f0 974
975 /* 0 */ {
976 mPUSHu(key);
977 }
978 /* 1 */ {
979 size_t n;
980 char *p = SvPV(declarator, n);
981 char *q = memchr(p, ' ', n);
79bce2d4 982 mPUSHp(p, q ? (size_t)(q - p) : n);
53c979f0 983 }
984 if (!ps) {
985 if (SvTRUE(kws->shift)) {
986 PUSHs(kws->shift);
987 } else {
988 PUSHmortal;
989 }
51a483f8 990 PUSHmortal;
53c979f0 991 mPUSHs(newRV_noinc((SV *)newAV()));
992 mPUSHs(newRV_noinc((SV *)newAV()));
993 mPUSHs(newRV_noinc((SV *)newAV()));
994 mPUSHs(newRV_noinc((SV *)newAV()));
995 mPUSHp("@_", 2);
51a483f8 996 PUSHmortal;
53c979f0 997 } else {
51a483f8 998 /* 2, 3 */ {
53c979f0 999 if (ps->invocant.name) {
1000 PUSHs(ps->invocant.name);
51a483f8 1001 if (ps->invocant.type) {
1002 PUSHs(ps->invocant.type);
1003 } else {
1004 PUSHmortal;
1005 }
53c979f0 1006 } else {
1007 PUSHmortal;
51a483f8 1008 PUSHmortal;
53c979f0 1009 }
1010 }
51a483f8 1011 /* 4 */ {
53c979f0 1012 size_t i, lim;
1013 AV *av;
1014
1015 lim = ps->positional_required.used;
1016
1017 av = newAV();
1018 if (lim) {
51a483f8 1019 av_extend(av, (lim - 1) * 2);
53c979f0 1020 for (i = 0; i < lim; i++) {
51a483f8 1021 Param *cur = &ps->positional_required.data[i];
1022 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1023 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1024 }
1025 }
1026
1027 mPUSHs(newRV_noinc((SV *)av));
1028 }
51a483f8 1029 /* 5 */ {
53c979f0 1030 size_t i, lim;
1031 AV *av;
1032
1033 lim = ps->positional_optional.used;
1034
1035 av = newAV();
1036 if (lim) {
51a483f8 1037 av_extend(av, (lim - 1) * 2);
53c979f0 1038 for (i = 0; i < lim; i++) {
51a483f8 1039 Param *cur = &ps->positional_optional.data[i].param;
1040 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1041 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1042 }
1043 }
1044
1045 mPUSHs(newRV_noinc((SV *)av));
1046 }
51a483f8 1047 /* 6 */ {
53c979f0 1048 size_t i, lim;
1049 AV *av;
1050
1051 lim = ps->named_required.used;
1052
1053 av = newAV();
1054 if (lim) {
51a483f8 1055 av_extend(av, (lim - 1) * 2);
53c979f0 1056 for (i = 0; i < lim; i++) {
51a483f8 1057 Param *cur = &ps->named_required.data[i];
1058 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1059 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1060 }
1061 }
1062
1063 mPUSHs(newRV_noinc((SV *)av));
1064 }
51a483f8 1065 /* 7 */ {
53c979f0 1066 size_t i, lim;
1067 AV *av;
1068
1069 lim = ps->named_optional.used;
1070
1071 av = newAV();
1072 if (lim) {
51a483f8 1073 av_extend(av, (lim - 1) * 2);
53c979f0 1074 for (i = 0; i < lim; i++) {
51a483f8 1075 Param *cur = &ps->named_optional.data[i].param;
1076 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1077 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1078 }
1079 }
1080
1081 mPUSHs(newRV_noinc((SV *)av));
1082 }
51a483f8 1083 /* 8, 9 */ {
53c979f0 1084 if (ps->slurpy.name) {
1085 PUSHs(ps->slurpy.name);
51a483f8 1086 if (ps->slurpy.type) {
1087 PUSHs(ps->slurpy.type);
1088 } else {
1089 PUSHmortal;
1090 }
53c979f0 1091 } else {
1092 PUSHmortal;
51a483f8 1093 PUSHmortal;
53c979f0 1094 }
1095 }
1096 }
1097 PUTBACK;
1098
1099 call_pv(MY_PKG "::_register_info", G_VOID);
1100
1101 FREETMPS;
1102 LEAVE;
1103}
1104
e4648f19 1105static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
e158cf8f 1106 ParamSpec *param_spec;
c311cef3 1107 SV *declarator;
1108 I32 floor_ix;
63915d26 1109 int save_ix;
c311cef3 1110 SV *saw_name;
ed95eeff 1111 OpGuard *prelude_sentinel;
c311cef3 1112 SV *proto;
ed95eeff 1113 OpGuard *attrs_sentinel;
1114 OP *body;
c311cef3 1115 unsigned builtin_attrs;
db81d362 1116 I32 c;
1117
e4648f19 1118 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
db81d362 1119
db81d362 1120 lex_read_space(0);
1121
c311cef3 1122 builtin_attrs = 0;
1123
db81d362 1124 /* function name */
c311cef3 1125 saw_name = NULL;
e4648f19 1126 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
c311cef3 1127
1128 if (PL_parser->expect != XSTATE) {
1129 /* bail out early so we don't predeclare $saw_name */
1130 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1131 }
1132
db81d362 1133 sv_catpvs(declarator, " ");
c311cef3 1134 sv_catsv(declarator, saw_name);
1135
1136 if (
1137 sv_eq_pvs(saw_name, "BEGIN") ||
1138 sv_eq_pvs(saw_name, "END") ||
1139 sv_eq_pvs(saw_name, "INIT") ||
1140 sv_eq_pvs(saw_name, "CHECK") ||
1141 sv_eq_pvs(saw_name, "UNITCHECK")
1142 ) {
1143 builtin_attrs |= MY_ATTR_SPECIAL;
1144 }
1145
db81d362 1146 lex_read_space(0);
63915d26 1147 } else if (!(spec->flags & FLAG_ANON_OK)) {
31534187 1148 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
db81d362 1149 } else {
1150 sv_catpvs(declarator, " (anon)");
1151 }
1152
63915d26 1153 /* we're a subroutine declaration */
c311cef3 1154 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1155 SAVEFREESV(PL_compcv);
1156
63915d26 1157 /* create outer block: '{' */
1158 save_ix = S_block_start(aTHX_ TRUE);
1159
1e0f1595 1160 /* initialize synthetic optree */
ed95eeff 1161 Newx(prelude_sentinel, 1, OpGuard);
1162 op_guard_init(prelude_sentinel);
1163 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1e0f1595 1164
db81d362 1165 /* parameters */
e158cf8f 1166 param_spec = NULL;
63915d26 1167
db81d362 1168 c = lex_peek_unichar(0);
1169 if (c == '(') {
ed95eeff 1170 OpGuard *init_sentinel;
e158cf8f 1171
ed95eeff 1172 Newx(init_sentinel, 1, OpGuard);
1173 op_guard_init(init_sentinel);
1174 sentinel_register(sen, init_sentinel, free_op_guard_void);
e158cf8f 1175
1176 Newx(param_spec, 1, ParamSpec);
1177 ps_init(param_spec);
e4648f19 1178 sentinel_register(sen, param_spec, ps_free_void);
db81d362 1179
1180 lex_read_unichar(0);
1181 lex_read_space(0);
1182
e158cf8f 1183 while ((c = lex_peek_unichar(0)) != ')') {
1184 int flags;
51a483f8 1185 SV *name, *type;
e158cf8f 1186 char sigil;
1187 PADOFFSET padoff;
c311cef3 1188
51a483f8 1189 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
c311cef3 1190
e158cf8f 1191 S_intro_my(aTHX);
63915d26 1192
e158cf8f 1193 sigil = SvPV_nolen(name)[0];
db81d362 1194
e158cf8f 1195 /* internal consistency */
1196 if (flags & PARAM_NAMED) {
1197 if (flags & PARAM_INVOCANT) {
1198 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
db81d362 1199 }
e158cf8f 1200 if (sigil != '$') {
1201 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
db81d362 1202 }
e158cf8f 1203 } else if (flags & PARAM_INVOCANT) {
ed95eeff 1204 if (init_sentinel->op) {
e158cf8f 1205 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
db81d362 1206 }
e158cf8f 1207 if (sigil != '$') {
1208 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1209 }
ed95eeff 1210 } else if (sigil != '$' && init_sentinel->op) {
e158cf8f 1211 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1212 }
db81d362 1213
e158cf8f 1214 /* external constraints */
1215 if (param_spec->slurpy.name) {
1216 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1217 }
1218 if (sigil != '$') {
ed95eeff 1219 assert(!init_sentinel->op);
e158cf8f 1220 param_spec->slurpy.name = name;
1221 param_spec->slurpy.padoff = padoff;
51a483f8 1222 param_spec->slurpy.type = type;
e158cf8f 1223 continue;
1224 }
d8e5d540 1225
e158cf8f 1226 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1227 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));
1228 }
d8e5d540 1229
e158cf8f 1230 if (flags & PARAM_INVOCANT) {
1231 if (param_spec->invocant.name) {
1232 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1233 }
1234 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1235 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
63915d26 1236 }
e158cf8f 1237 if (!(spec->flags & FLAG_INVOCANT)) {
1238 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1239 }
1240 param_spec->invocant.name = name;
1241 param_spec->invocant.padoff = padoff;
51a483f8 1242 param_spec->invocant.type = type;
e158cf8f 1243 continue;
1244 }
63915d26 1245
ed95eeff 1246 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
e158cf8f 1247 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1248 }
1e0f1595 1249
e158cf8f 1250 if (ps_contains(aTHX_ param_spec, name)) {
1251 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1252 }
1e0f1595 1253
e158cf8f 1254 if (flags & PARAM_NAMED) {
1255 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1256 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1e0f1595 1257 }
1258
ed95eeff 1259 if (init_sentinel->op) {
e158cf8f 1260 ParamInit *pi = piv_extend(&param_spec->named_optional);
1261 pi->param.name = name;
1262 pi->param.padoff = padoff;
51a483f8 1263 pi->param.type = type;
ed95eeff 1264 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1265 param_spec->named_optional.used++;
1266 } else {
67fc1ddb 1267 Param *p;
1268
e158cf8f 1269 if (param_spec->positional_optional.used) {
1270 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));
1271 }
d8e5d540 1272
67fc1ddb 1273 p = pv_extend(&param_spec->named_required);
e158cf8f 1274 p->name = name;
1275 p->padoff = padoff;
51a483f8 1276 p->type = type;
e158cf8f 1277 param_spec->named_required.used++;
1278 }
1279 } else {
ed95eeff 1280 if (init_sentinel->op || param_spec->positional_optional.used) {
e158cf8f 1281 ParamInit *pi = piv_extend(&param_spec->positional_optional);
1282 pi->param.name = name;
1283 pi->param.padoff = padoff;
51a483f8 1284 pi->param.type = type;
ed95eeff 1285 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1286 param_spec->positional_optional.used++;
1287 } else {
1288 Param *p = pv_extend(&param_spec->positional_required);
1289 p->name = name;
1290 p->padoff = padoff;
51a483f8 1291 p->type = type;
e158cf8f 1292 param_spec->positional_required.used++;
db81d362 1293 }
1294 }
1295
e158cf8f 1296 }
1297 lex_read_unichar(0);
1298 lex_read_space(0);
db81d362 1299
e158cf8f 1300 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1301 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1302 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
db81d362 1303 }
e158cf8f 1304
1305 param_spec->invocant.name = spec->shift;
1306 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
db81d362 1307 }
1308 }
1309
1310 /* prototype */
c311cef3 1311 proto = NULL;
db81d362 1312 c = lex_peek_unichar(0);
1313 if (c == ':') {
1314 lex_read_unichar(0);
1315 lex_read_space(0);
1316
1317 c = lex_peek_unichar(0);
1318 if (c != '(') {
c311cef3 1319 lex_stuff_pvs(":", 0);
1320 c = ':';
db81d362 1321 } else {
31534187 1322 lex_read_unichar(0);
e4648f19 1323 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
f34187b8 1324 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
db81d362 1325 }
e4648f19 1326 my_check_prototype(aTHX_ sen, declarator, proto);
db81d362 1327 lex_read_space(0);
c311cef3 1328 c = lex_peek_unichar(0);
514bcaa6 1329 if (!(c == ':' || c == '{')) {
1330 lex_stuff_pvs(":", 0);
1331 c = ':';
1332 }
db81d362 1333 }
1334 }
1335
db81d362 1336 /* attributes */
ed95eeff 1337 Newx(attrs_sentinel, 1, OpGuard);
1338 op_guard_init(attrs_sentinel);
1339 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
c311cef3 1340
63915d26 1341 if (c == ':' || c == '{') /* '}' - hi, vim */ {
c311cef3 1342
1343 /* kludge default attributes in */
1344 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1345 lex_stuff_sv(spec->attrs, 0);
1346 c = ':';
1347 }
b72eb6ee 1348
db81d362 1349 if (c == ':') {
db81d362 1350 lex_read_unichar(0);
1351 lex_read_space(0);
db81d362 1352 c = lex_peek_unichar(0);
c311cef3 1353
1354 for (;;) {
1355 SV *attr;
1356
e4648f19 1357 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
c311cef3 1358 break;
db81d362 1359 }
c311cef3 1360
db81d362 1361 lex_read_space(0);
1362 c = lex_peek_unichar(0);
c311cef3 1363
1364 if (c != '(') {
1365 if (sv_eq_pvs(attr, "lvalue")) {
1366 builtin_attrs |= MY_ATTR_LVALUE;
1367 attr = NULL;
1368 } else if (sv_eq_pvs(attr, "method")) {
1369 builtin_attrs |= MY_ATTR_METHOD;
1370 attr = NULL;
1371 }
1372 } else {
31534187 1373 SV *sv;
1374 lex_read_unichar(0);
e4648f19 1375 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
c311cef3 1376 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1377 }
31534187 1378 sv_catpvs(attr, "(");
c311cef3 1379 sv_catsv(attr, sv);
31534187 1380 sv_catpvs(attr, ")");
c311cef3 1381
1382 lex_read_space(0);
1383 c = lex_peek_unichar(0);
1384 }
1385
1386 if (attr) {
ed95eeff 1387 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
c311cef3 1388 }
1389
1390 if (c == ':') {
1391 lex_read_unichar(0);
1392 lex_read_space(0);
1393 c = lex_peek_unichar(0);
1394 }
db81d362 1395 }
1396 }
1397 }
1398
1399 /* body */
63915d26 1400 if (c != '{') /* '}' - hi, vim */ {
85bc3fbd 1401 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
db81d362 1402 }
c311cef3 1403
63915d26 1404 /* surprise predeclaration! */
1405 if (saw_name) {
1406 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1407 starts parsing the body */
1408 const I32 sub_ix = start_subparse(FALSE, 0);
1409 SAVEFREESV(PL_compcv);
1410
1411 SvREFCNT_inc_simple_void(PL_compcv);
1412
1413 newATTRSUB(
1414 sub_ix,
fc634bba 1415 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1416 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
63915d26 1417 NULL,
1418 NULL
1419 );
1420 }
1421
c311cef3 1422 if (builtin_attrs & MY_ATTR_LVALUE) {
1423 CvLVALUE_on(PL_compcv);
db81d362 1424 }
c311cef3 1425 if (builtin_attrs & MY_ATTR_METHOD) {
1426 CvMETHOD_on(PL_compcv);
1427 }
1428 if (builtin_attrs & MY_ATTR_SPECIAL) {
1429 CvSPECIAL_on(PL_compcv);
db81d362 1430 }
1431
e158cf8f 1432 /* check number of arguments */
1e0f1595 1433 if (spec->flags & FLAG_CHECK_NARGS) {
e158cf8f 1434 int amin, amax;
abccbe86 1435
e158cf8f 1436 amin = args_min(aTHX_ param_spec, spec);
1437 if (amin > 0) {
51a483f8 1438 OP *chk, *cond, *err, *xcroak;
63915d26 1439
fc634bba 1440 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1441 err = newBINOP(
1442 OP_CONCAT, 0,
1443 err,
1444 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1445 );
1446 err = newBINOP(
1447 OP_CONCAT, 0,
1448 err,
1449 mkconstpvs(")")
1450 );
63915d26 1451
51a483f8 1452 xcroak = newCVREF(OPf_WANT_SCALAR,
1453 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1e0f1595 1454 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1455 op_append_elem(OP_LIST, err, xcroak));
63915d26 1456
1e0f1595 1457 cond = newBINOP(OP_LT, 0,
5f50e017 1458 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1459 mkconstiv(aTHX_ amin));
1e0f1595 1460 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1461
ed95eeff 1462 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1463 }
abccbe86 1464
e158cf8f 1465 amax = args_max(param_spec);
1466 if (amax >= 0) {
51a483f8 1467 OP *chk, *cond, *err, *xcroak;
63915d26 1468
fc634bba 1469 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1470 err = newBINOP(
1471 OP_CONCAT, 0,
1472 err,
1473 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1474 );
1475 err = newBINOP(
1476 OP_CONCAT, 0,
1477 err,
1478 mkconstpvs(")")
1479 );
63915d26 1480
51a483f8 1481 xcroak = newCVREF(
fc634bba 1482 OPf_WANT_SCALAR,
1483 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1484 );
1e0f1595 1485 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1486 op_append_elem(OP_LIST, err, xcroak));
63915d26 1487
fc634bba 1488 cond = newBINOP(
1489 OP_GT, 0,
1490 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1491 mkconstiv(aTHX_ amax)
1492 );
1e0f1595 1493 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1494
ed95eeff 1495 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1496 }
e158cf8f 1497
1498 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
51a483f8 1499 OP *chk, *cond, *err, *xcroak;
e158cf8f 1500 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
63915d26 1501
fc634bba 1502 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
63915d26 1503
51a483f8 1504 xcroak = newCVREF(
fc634bba 1505 OPf_WANT_SCALAR,
1506 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1507 );
1e0f1595 1508 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1509 op_append_elem(OP_LIST, err, xcroak));
63915d26 1510
1e0f1595 1511 cond = newBINOP(OP_GT, 0,
5f50e017 1512 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1513 mkconstiv(aTHX_ fixed));
e158cf8f 1514 cond = newLOGOP(OP_AND, 0,
fc634bba 1515 cond,
1516 newBINOP(OP_MODULO, 0,
1517 fixed
1518 ? newBINOP(OP_SUBTRACT, 0,
1519 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1520 mkconstiv(aTHX_ fixed))
1521 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1522 mkconstiv(aTHX_ 2)));
1e0f1595 1523 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1524
ed95eeff 1525 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
c311cef3 1526 }
1e0f1595 1527 }
c311cef3 1528
e158cf8f 1529 if (!param_spec) {
1530 /* my $invocant = shift; */
1531 if (SvTRUE(spec->shift)) {
1532 OP *var;
abccbe86 1533
e158cf8f 1534 var = my_var(
1535 aTHX_
1536 OPf_MOD | (OPpLVAL_INTRO << 8),
1537 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1538 );
1539 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
c311cef3 1540
ed95eeff 1541 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
e158cf8f 1542 }
1543 } else {
1544 /* my $invocant = shift; */
1545 if (param_spec->invocant.name) {
1546 OP *var;
c311cef3 1547
e158cf8f 1548 var = my_var(
1549 aTHX_
1550 OPf_MOD | (OPpLVAL_INTRO << 8),
1551 param_spec->invocant.padoff
1552 );
1553 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1e0f1595 1554
ed95eeff 1555 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
51a483f8 1556
1557 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
ed95eeff 1558 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, &param_spec->invocant))));
51a483f8 1559 }
c311cef3 1560 }
1561
e158cf8f 1562 /* my (...) = @_; */
1563 {
1564 OP *lhs;
1565 size_t i, lim;
63915d26 1566
e158cf8f 1567 lhs = NULL;
63915d26 1568
e158cf8f 1569 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1570 OP *const var = my_var(
1571 aTHX_
1572 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1573 param_spec->positional_required.data[i].padoff
1574 );
1575 lhs = op_append_elem(OP_LIST, lhs, var);
1576 }
63915d26 1577
e158cf8f 1578 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1579 OP *const var = my_var(
1580 aTHX_
1581 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1582 param_spec->positional_optional.data[i].param.padoff
1583 );
1584 lhs = op_append_elem(OP_LIST, lhs, var);
1585 }
63915d26 1586
fc634bba 1587 {
1588 PADOFFSET padoff;
1589 I32 type;
1590 bool slurpy_hash;
1591
1592 /*
1593 * cases:
1594 * 1) no named params
1595 * 1.1) slurpy
1596 * => put it in
1597 * 1.2) no slurpy
1598 * => nop
1599 * 2) named params
1600 * 2.1) no slurpy
1601 * => synthetic %{rest}
1602 * 2.2) slurpy is a hash
1603 * => put it in
1604 * 2.3) slurpy is an array
1605 * => synthetic %{rest}
1606 * remember to declare array later
1607 */
1608
1609 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1610 if (!count_named_params(param_spec)) {
1611 if (param_spec->slurpy.name) {
1612 padoff = param_spec->slurpy.padoff;
1613 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1614 } else {
1615 padoff = NOT_IN_PAD;
1616 type = OP_PADSV;
1617 }
1618 } else if (slurpy_hash) {
1619 padoff = param_spec->slurpy.padoff;
1620 type = OP_PADHV;
e158cf8f 1621 } else {
fc634bba 1622 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1623 type = OP_PADHV;
1624 }
1625
1626 if (padoff != NOT_IN_PAD) {
e158cf8f 1627 OP *const var = my_var_g(
1628 aTHX_
fc634bba 1629 type,
e158cf8f 1630 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
fc634bba 1631 padoff
e158cf8f 1632 );
fc634bba 1633
e158cf8f 1634 lhs = op_append_elem(OP_LIST, lhs, var);
fc634bba 1635
1636 if (type == OP_PADHV) {
1637 param_spec->rest_hash = padoff;
1638 }
e158cf8f 1639 }
1640 }
63915d26 1641
e158cf8f 1642 if (lhs) {
1643 OP *rhs;
1644 lhs->op_flags |= OPf_PARENS;
1645 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1646
ed95eeff 1647 op_guard_update(prelude_sentinel, op_append_list(
1648 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1649 newSTATEOP(
1650 0, NULL,
1651 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1652 )
ed95eeff 1653 ));
e158cf8f 1654 }
1655 }
63915d26 1656
fc634bba 1657 /* default positional arguments */
e158cf8f 1658 {
1659 size_t i, lim, req;
1660 OP *nest;
63915d26 1661
e158cf8f 1662 nest = NULL;
63915d26 1663
e158cf8f 1664 req = param_spec->positional_required.used;
1665 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1666 ParamInit *cur = &param_spec->positional_optional.data[i];
1667 OP *var, *cond;
63915d26 1668
e158cf8f 1669 cond = newBINOP(
1670 OP_LT, 0,
1671 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1672 mkconstiv(aTHX_ req + i + 1)
e158cf8f 1673 );
63915d26 1674
e158cf8f 1675 var = my_var(aTHX_ 0, cur->param.padoff);
63915d26 1676
e158cf8f 1677 nest = op_append_list(
1678 OP_LINESEQ, nest,
ed95eeff 1679 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
e158cf8f 1680 );
e158cf8f 1681 nest = newCONDOP(
1682 0,
1683 cond,
1684 nest,
1685 NULL
1686 );
1687 }
1e0f1595 1688
ed95eeff 1689 op_guard_update(prelude_sentinel, op_append_list(
1690 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1691 nest
ed95eeff 1692 ));
c311cef3 1693 }
1694
e158cf8f 1695 /* named parameters */
1696 if (count_named_params(param_spec)) {
fc634bba 1697 size_t i, lim;
1698
1699 assert(param_spec->rest_hash != NOT_IN_PAD);
1700
1701 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1702 Param *cur = &param_spec->named_required.data[i];
1703 size_t n;
1704 char *p = SvPV(cur->name, n);
1705 OP *var, *cond;
1706
1707 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1708
1709 if (spec->flags & FLAG_CHECK_NARGS) {
51a483f8 1710 OP *xcroak, *msg;
fc634bba 1711
1712 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1713 var = newUNOP(OP_DELETE, 0, var);
1714
1715 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
51a483f8 1716 xcroak = newCVREF(
fc634bba 1717 OPf_WANT_SCALAR,
1718 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1719 );
51a483f8 1720 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1721
1722 cond = newUNOP(OP_EXISTS, 0, cond);
1723
51a483f8 1724 cond = newCONDOP(0, cond, var, xcroak);
fc634bba 1725 }
1726
1727 var = my_var(
1728 aTHX_
1729 OPf_MOD | (OPpLVAL_INTRO << 8),
1730 cur->padoff
1731 );
1732 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1733
ed95eeff 1734 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1735 }
1736
1737 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1738 ParamInit *cur = &param_spec->named_optional.data[i];
1739 size_t n;
1740 char *p = SvPV(cur->param.name, n);
1741 OP *var, *cond;
1742
1743 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1744 var = newUNOP(OP_DELETE, 0, var);
1745
1746 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1747 cond = newUNOP(OP_EXISTS, 0, cond);
1748
ed95eeff 1749 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
fc634bba 1750
1751 var = my_var(
1752 aTHX_
1753 OPf_MOD | (OPpLVAL_INTRO << 8),
1754 cur->param.padoff
1755 );
1756 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1757
ed95eeff 1758 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1759 }
1760
1761 if (!param_spec->slurpy.name) {
1762 if (spec->flags & FLAG_CHECK_NARGS) {
1763 /* croak if %{rest} */
51a483f8 1764 OP *xcroak, *cond, *keys, *msg;
fc634bba 1765
1766 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1767 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1768 {
1769 OP *first, *mid, *last;
1770
1771 last = keys;
1772
1773 mid = mkconstpvs(", ");
1774 mid->op_sibling = last;
1775
1776 first = newOP(OP_PUSHMARK, 0);
1777
1778 keys = newLISTOP(OP_JOIN, 0, first, mid);
1779 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1780 ((LISTOP *)keys)->op_last = last;
1781 }
1782
1783 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1784 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1785
51a483f8 1786 xcroak = newCVREF(
fc634bba 1787 OPf_WANT_SCALAR,
1788 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1789 );
51a483f8 1790 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1791
1792 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
51a483f8 1793 xcroak = newCONDOP(0, cond, xcroak, NULL);
fc634bba 1794
ed95eeff 1795 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
fc634bba 1796 } else {
1797 OP *clear;
1798
1799 clear = newASSIGNOP(
1800 OPf_STACKED,
1801 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1802 0,
1803 newNULLLIST()
1804 );
1805
ed95eeff 1806 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1807 }
1808 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1809 OP *var, *clear;
1810
1811 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1812
1813 var = my_var_g(
1814 aTHX_
1815 OP_PADAV,
1816 OPf_MOD | (OPpLVAL_INTRO << 8),
1817 param_spec->slurpy.padoff
1818 );
1819
1820 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1821
ed95eeff 1822 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1823
1824 clear = newASSIGNOP(
1825 OPf_STACKED,
1826 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1827 0,
1828 newNULLLIST()
1829 );
1830
ed95eeff 1831 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1832 }
1833 }
51a483f8 1834
1835 if (spec->flags & FLAG_CHECK_TARGS) {
1836 size_t i, lim, base;
1837
1838 base = 1;
1839 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1840 Param *cur = &param_spec->positional_required.data[i];
1841
1842 if (cur->type) {
ed95eeff 1843 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1844 }
1845 }
1846 base += i;
1847
1848 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1849 Param *cur = &param_spec->positional_optional.data[i].param;
1850
1851 if (cur->type) {
ed95eeff 1852 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1853 }
1854 }
1855 base += i;
1856
1857 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1858 Param *cur = &param_spec->named_required.data[i];
1859
1860 if (cur->type) {
ed95eeff 1861 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1862 }
1863 }
1864 base += i;
1865
1866 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1867 Param *cur = &param_spec->named_optional.data[i].param;
1868
1869 if (cur->type) {
ed95eeff 1870 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1871 }
1872 }
1873 base += i;
1874
1875 if (param_spec->slurpy.type) {
1876 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
a8492ba4 1877 OP *check, *list, *loop;
51a483f8 1878
a8492ba4 1879 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
51a483f8 1880
1881 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1882 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1883 } else {
1884 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1885 list = newUNOP(OP_VALUES, 0, list);
1886 }
1887
a8492ba4 1888 loop = newFOROP(0, NULL, list, check, NULL);
51a483f8 1889
ed95eeff 1890 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
51a483f8 1891 }
1892 }
1e0f1595 1893 }
c311cef3 1894
1e0f1595 1895 /* finally let perl parse the actual subroutine body */
1896 body = parse_block(0);
c311cef3 1897
1e0f1595 1898 /* add '();' to make function return nothing by default */
1899 /* (otherwise the invisible parameter initialization can "leak" into
1900 the return value: fun ($x) {}->("asdf", 0) == 2) */
ed95eeff 1901 if (prelude_sentinel->op) {
1e0f1595 1902 body = newSTATEOP(0, NULL, body);
db81d362 1903 }
1904
ed95eeff 1905 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1e0f1595 1906
c311cef3 1907 /* it's go time. */
1908 {
53c979f0 1909 CV *cv;
ed95eeff 1910 OP *const attrs = op_guard_relinquish(attrs_sentinel);
53c979f0 1911
c311cef3 1912 SvREFCNT_inc_simple_void(PL_compcv);
1913
63915d26 1914 /* close outer block: '}' */
1915 S_block_end(aTHX_ save_ix, body);
1916
53c979f0 1917 cv = newATTRSUB(
c311cef3 1918 floor_ix,
53c979f0 1919 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
c311cef3 1920 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1921 attrs,
1922 body
1923 );
53c979f0 1924
2c1cb7bd 1925 if (cv) {
1926 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1927 }
53c979f0 1928
1929 if (saw_name) {
1930 *pop = newOP(OP_NULL, 0);
1931 return KEYWORD_PLUGIN_STMT;
1932 }
1933
1934 *pop = newUNOP(
1935 OP_REFGEN, 0,
1936 newSVOP(
1937 OP_ANONCODE, 0,
1938 (SV *)cv
1939 )
1940 );
1941 return KEYWORD_PLUGIN_EXPR;
db81d362 1942 }
db81d362 1943}
1944
8216fac4 1945static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1946 HV *hints;
1947 SV *sv, **psv;
1948 const char *p, *kw_active;
1949 STRLEN kw_active_len;
1950
1951 if (!(hints = GvHV(PL_hintgv))) {
1952 return FALSE;
1953 }
1954 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1955 return FALSE;
1956 }
1957 sv = *psv;
1958 kw_active = SvPV(sv, kw_active_len);
1959 if (kw_active_len <= kw_len) {
1960 return FALSE;
1961 }
1962 for (
1963 p = kw_active;
1964 (p = strchr(p, *kw_ptr)) &&
1965 p < kw_active + kw_active_len - kw_len;
1966 p++
1967 ) {
1968 if (
1969 (p == kw_active || p[-1] == ' ') &&
1970 p[kw_len] == ' ' &&
1971 memcmp(kw_ptr, p, kw_len) == 0
1972 ) {
1973 ENTER;
1974 SAVETMPS;
1975
1976 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1977
1978 spec->flags = 0;
1979 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1980 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1981
1982#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1983 const char *fk_ptr_; \
1984 STRLEN fk_len_; \
1985 SV *fk_sv_; \
1986 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
1987 sv_catpvn(fk_sv_, PTR, LEN); \
1988 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
1989 if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
1990 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
1991 } \
1992} STMT_END
1993
1994 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
1995 spec->flags = SvIV(*psv);
1996
1997 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
1998 SvSetSV(spec->shift, *psv);
1999
2000 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2001 SvSetSV(spec->attrs, *psv);
2002
2003#undef FETCH_HINTK_INTO
2004 return TRUE;
2005 }
2006 }
2007 return FALSE;
2008}
2009
db81d362 2010static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
8216fac4 2011 Sentinel sen = { NULL };
63915d26 2012 KWSpec spec;
db81d362 2013 int ret;
2014
8216fac4 2015 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2016 /* scope was entered, 'sen' and 'spec' are initialized */
e4648f19 2017 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
8216fac4 2018 FREETMPS;
2019 LEAVE;
db81d362 2020 } else {
8216fac4 2021 /* not one of our keywords, no allocation done */
7dd35535 2022 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
db81d362 2023 }
2024
db81d362 2025 return ret;
2026}
2027
2028WARNINGS_RESET
2029
53c979f0 2030MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
db81d362 2031PROTOTYPES: ENABLE
2032
53c979f0 2033UV
2034fp__cv_root(sv)
2035 SV * sv
2036 PREINIT:
79bce2d4 2037 CV *xcv;
53c979f0 2038 HV *hv;
2039 GV *gv;
2040 CODE:
79bce2d4 2041 xcv = sv_2cv(sv, &hv, &gv, 0);
2042 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
53c979f0 2043 OUTPUT:
2044 RETVAL
2045
db81d362 2046BOOT:
2047WARNINGS_ENABLE {
2048 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
426a4d69 2049 /**/
d8e5d540 2050 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2051 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
63915d26 2052 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
d8e5d540 2053 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2054 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
e158cf8f 2055 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
51a483f8 2056 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2057 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
db81d362 2058 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
d8e5d540 2059 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2060 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2061 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
426a4d69 2062 /**/
db81d362 2063 next_keyword_plugin = PL_keyword_plugin;
2064 PL_keyword_plugin = my_keyword_plugin;
2065} WARNINGS_RESET
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