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pass current package to custom type reifier
[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:"
7193dffb 88#define HINTK_REIFY_ MY_PKG "/reify:"
63915d26 89
90#define DEFSTRUCT(T) typedef struct T T; struct T
91
0f875412 92#define UV_BITS (sizeof (UV) * CHAR_BIT)
63915d26 93
94enum {
95 FLAG_NAME_OK = 0x01,
96 FLAG_ANON_OK = 0x02,
97 FLAG_DEFAULT_ARGS = 0x04,
d8e5d540 98 FLAG_CHECK_NARGS = 0x08,
e158cf8f 99 FLAG_INVOCANT = 0x10,
51a483f8 100 FLAG_NAMED_PARAMS = 0x20,
101 FLAG_TYPES_OK = 0x40,
102 FLAG_CHECK_TARGS = 0x80
63915d26 103};
104
105DEFSTRUCT(KWSpec) {
106 unsigned flags;
7193dffb 107 I32 reify_type;
b72eb6ee 108 SV *shift;
109 SV *attrs;
63915d26 110};
db81d362 111
112static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
113
e4648f19 114DEFSTRUCT(Resource) {
115 Resource *next;
116 void *data;
117 void (*destroy)(pTHX_ void *);
118};
119
120typedef Resource *Sentinel[1];
121
122static void sentinel_clear_void(pTHX_ void *p) {
123 Resource **pp = p;
124 while (*pp) {
125 Resource *cur = *pp;
a4c13d40 126 if (cur->destroy) {
127 cur->destroy(aTHX_ cur->data);
128 }
e4648f19 129 cur->data = (void *)"no";
130 cur->destroy = NULL;
131 *pp = cur->next;
132 Safefree(cur);
133 }
134}
135
a4c13d40 136static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
e4648f19 137 Resource *cur;
138
139 Newx(cur, 1, Resource);
140 cur->data = data;
141 cur->destroy = destroy;
142 cur->next = *sen;
143 *sen = cur;
a4c13d40 144
145 return cur;
146}
147
148static void sentinel_disarm(Resource *p) {
149 p->destroy = NULL;
e4648f19 150}
151
152static void my_sv_refcnt_dec_void(pTHX_ void *p) {
153 SV *sv = p;
154 SvREFCNT_dec(sv);
155}
156
157static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
158 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
159 return sv;
160}
161
db81d362 162
ed95eeff 163#if HAVE_PERL_VERSION(5, 17, 2)
164 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
165#else
166 #define MY_OP_SLABBED(O) 0
167#endif
168
169DEFSTRUCT(OpGuard) {
170 OP *op;
171 bool needs_freed;
172};
173
174static void op_guard_init(OpGuard *p) {
175 p->op = NULL;
176 p->needs_freed = FALSE;
177}
178
179static OpGuard op_guard_transfer(OpGuard *p) {
180 OpGuard r = *p;
181 op_guard_init(p);
182 return r;
183}
184
185static OP *op_guard_relinquish(OpGuard *p) {
186 OP *o = p->op;
187 op_guard_init(p);
188 return o;
189}
190
191static void op_guard_update(OpGuard *p, OP *o) {
192 p->op = o;
193 p->needs_freed = o && !MY_OP_SLABBED(o);
194}
195
196static void op_guard_clear(pTHX_ OpGuard *p) {
197 if (p->needs_freed) {
198 op_free(p->op);
199 }
200}
201
202static void free_op_guard_void(pTHX_ void *vp) {
203 OpGuard *p = vp;
204 op_guard_clear(aTHX_ p);
205 Safefree(p);
c311cef3 206}
207
51a483f8 208static void free_op_void(pTHX_ void *vp) {
209 OP *p = vp;
210 op_free(p);
211}
212
59016bfb 213#define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
c311cef3 214
59016bfb 215static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
c311cef3 216 STRLEN sv_len;
217 const char *sv_p = SvPV(sv, sv_len);
59016bfb 218 return memcmp(sv_p, p, n) == 0;
c311cef3 219}
220
221
222#include "padop_on_crack.c.inc"
223
224
c311cef3 225enum {
226 MY_ATTR_LVALUE = 0x01,
227 MY_ATTR_METHOD = 0x02,
228 MY_ATTR_SPECIAL = 0x04
229};
230
31534187 231static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
232 char ds[UTF8_MAXBYTES + 1], *d;
67fc1ddb 233 d = (char *)uvchr_to_utf8((U8 *)ds, c);
31534187 234 if (d - ds > 1) {
235 sv_utf8_upgrade(sv);
236 }
237 sv_catpvn(sv, ds, d - ds);
238}
239
31534187 240
e6d62383 241#define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
242#define MY_UNI_IDCONT(C) isALNUM_uni(C)
31534187 243
e4648f19 244static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
31534187 245 bool at_start, at_substart;
246 I32 c;
e4648f19 247 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 248 if (lex_bufutf8()) {
249 SvUTF8_on(sv);
250 }
251
252 at_start = at_substart = TRUE;
253 c = lex_peek_unichar(0);
254
255 while (c != -1) {
e6d62383 256 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
31534187 257 lex_read_unichar(0);
258 my_sv_cat_c(aTHX_ sv, c);
259 at_substart = FALSE;
260 c = lex_peek_unichar(0);
261 } else if (allow_package && !at_substart && c == '\'') {
262 lex_read_unichar(0);
263 c = lex_peek_unichar(0);
e6d62383 264 if (!MY_UNI_IDFIRST(c)) {
31534187 265 lex_stuff_pvs("'", 0);
266 break;
267 }
268 sv_catpvs(sv, "'");
269 at_substart = TRUE;
270 } else if (allow_package && (at_start || !at_substart) && c == ':') {
271 lex_read_unichar(0);
272 if (lex_peek_unichar(0) != ':') {
273 lex_stuff_pvs(":", 0);
274 break;
275 }
276 lex_read_unichar(0);
277 c = lex_peek_unichar(0);
e6d62383 278 if (!MY_UNI_IDFIRST(c)) {
31534187 279 lex_stuff_pvs("::", 0);
280 break;
281 }
282 sv_catpvs(sv, "::");
283 at_substart = TRUE;
284 } else {
285 break;
286 }
287 at_start = FALSE;
288 }
289
290 return SvCUR(sv) ? sv : NULL;
291}
292
e4648f19 293static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
31534187 294 I32 c, nesting;
295 SV *sv;
296 line_t start;
297
298 start = CopLINE(PL_curcop);
299
e4648f19 300 sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 301 if (lex_bufutf8()) {
302 SvUTF8_on(sv);
303 }
304
305 nesting = 0;
306 for (;;) {
307 c = lex_read_unichar(0);
308 if (c == EOF) {
309 CopLINE_set(PL_curcop, start);
310 return NULL;
311 }
312
313 if (c == '\\') {
314 c = lex_read_unichar(0);
315 if (c == EOF) {
316 CopLINE_set(PL_curcop, start);
317 return NULL;
318 }
319 if (keep_backslash || (c != '(' && c != ')')) {
320 sv_catpvs(sv, "\\");
321 }
322 } else if (c == '(') {
323 nesting++;
324 } else if (c == ')') {
325 if (!nesting) {
326 break;
327 }
328 nesting--;
329 }
330
331 my_sv_cat_c(aTHX_ sv, c);
332 }
333
334 return sv;
335}
336
e4648f19 337static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
31534187 338 char *start, *r, *w, *end;
339 STRLEN len;
340
341 /* strip spaces */
342 start = SvPV(proto, len);
343 end = start + len;
344
345 for (w = r = start; r < end; r++) {
346 if (!isSPACE(*r)) {
347 *w++ = *r;
348 }
349 }
350 *w = '\0';
351 SvCUR_set(proto, w - start);
352 end = w;
353 len = end - start;
354
355 if (!ckWARN(WARN_ILLEGALPROTO)) {
356 return;
357 }
358
359 /* check for bad characters */
360 if (strspn(start, "$@%*;[]&\\_+") != len) {
e4648f19 361 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
31534187 362 warner(
363 packWARN(WARN_ILLEGALPROTO),
364 "Illegal character in prototype for %"SVf" : %s",
365 SVfARG(declarator),
366 SvUTF8(proto)
367 ? sv_uni_display(
368 dsv,
369 proto,
370 len,
371 UNI_DISPLAY_ISPRINT
372 )
373 : pv_pretty(dsv, start, len, 60, NULL, NULL,
374 PERL_PV_ESCAPE_NONASCII
375 )
376 );
377 return;
378 }
379
380 for (r = start; r < end; r++) {
381 switch (*r) {
382 default:
383 warner(
384 packWARN(WARN_ILLEGALPROTO),
385 "Illegal character in prototype for %"SVf" : %s",
386 SVfARG(declarator), r
387 );
388 return;
389
390 case '_':
391 if (r[1] && !strchr(";@%", *r)) {
392 warner(
393 packWARN(WARN_ILLEGALPROTO),
394 "Illegal character after '_' in prototype for %"SVf" : %s",
395 SVfARG(declarator), r
396 );
397 return;
398 }
399 break;
400
401 case '@':
402 case '%':
403 if (r[1]) {
404 warner(
405 packWARN(WARN_ILLEGALPROTO),
406 "prototype after '%c' for %"SVf": %s",
407 *r, SVfARG(declarator), r + 1
408 );
409 return;
410 }
411 break;
412
413 case '\\':
414 r++;
415 if (strchr("$@%&*", *r)) {
416 break;
417 }
418 if (*r == '[') {
419 r++;
420 for (; r < end && *r != ']'; r++) {
421 if (!strchr("$@%&*", *r)) {
422 break;
423 }
424 }
425 if (*r == ']' && r[-1] != '[') {
426 break;
427 }
428 }
429 warner(
430 packWARN(WARN_ILLEGALPROTO),
431 "Illegal character after '\\' in prototype for %"SVf" : %s",
432 SVfARG(declarator), r
433 );
434 return;
435
436 case '$':
437 case '*':
438 case '&':
439 case ';':
440 case '+':
441 break;
442 }
443 }
444}
445
51a483f8 446static SV *parse_type(pTHX_ Sentinel, const SV *);
447
448static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
449 I32 c;
450 SV *t;
451
452 t = my_scan_word(aTHX_ sen, TRUE);
453 lex_read_space(0);
454
455 c = lex_peek_unichar(0);
456 if (c == '[') {
457 SV *u;
458
459 lex_read_unichar(0);
460 lex_read_space(0);
461 my_sv_cat_c(aTHX_ t, c);
462
463 u = parse_type(aTHX_ sen, declarator);
464 sv_catsv(t, u);
465
466 c = lex_peek_unichar(0);
467 if (c != ']') {
468 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
469 }
470 lex_read_unichar(0);
471 lex_read_space(0);
472
473 my_sv_cat_c(aTHX_ t, c);
474 }
475
476 return t;
477}
478
479static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
480 I32 c;
481 SV *t;
482
483 t = parse_type_paramd(aTHX_ sen, declarator);
484
485 c = lex_peek_unichar(0);
486 while (c == '|') {
487 SV *u;
488
489 lex_read_unichar(0);
490 lex_read_space(0);
491
492 my_sv_cat_c(aTHX_ t, c);
493 u = parse_type_paramd(aTHX_ sen, declarator);
494 sv_catsv(t, u);
495
496 c = lex_peek_unichar(0);
497 }
498
499 return t;
500}
501
7193dffb 502static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, const KWSpec *spec, SV *name) {
503 AV *type_reifiers;
504 SV *t, *sv, **psv;
51a483f8 505 int n;
506 dSP;
507
7193dffb 508 type_reifiers = get_av(MY_PKG "::type_reifiers", 0);
509 assert(type_reifiers != NULL);
510
511 if (spec->reify_type < 0 || spec->reify_type > av_len(type_reifiers)) {
512 croak("In %"SVf": internal error: reify_type [%ld] out of range [%ld]", SVfARG(declarator), (long)spec->reify_type, (long)(av_len(type_reifiers) + 1));
513 }
514
515 psv = av_fetch(type_reifiers, spec->reify_type, 0);
516 assert(psv != NULL);
517 sv = *psv;
52c18b0f 518
51a483f8 519 ENTER;
520 SAVETMPS;
521
522 PUSHMARK(SP);
e7c6de2c 523 EXTEND(SP, 2);
51a483f8 524 PUSHs(name);
e7c6de2c 525 PUSHs(PL_curstname);
51a483f8 526 PUTBACK;
527
7193dffb 528 n = call_sv(sv, G_SCALAR);
51a483f8 529 SPAGAIN;
530
531 assert(n == 1);
a8492ba4 532 /* don't warn about n being unused if assert() is compiled out */
533 n = n;
534
51a483f8 535 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
536
537 PUTBACK;
538 FREETMPS;
539 LEAVE;
540
541 if (!SvTRUE(t)) {
542 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
543 }
544
545 return t;
546}
547
e158cf8f 548
549DEFSTRUCT(Param) {
550 SV *name;
551 PADOFFSET padoff;
51a483f8 552 SV *type;
e158cf8f 553};
554
555DEFSTRUCT(ParamInit) {
556 Param param;
ed95eeff 557 OpGuard init;
e158cf8f 558};
559
560#define VEC(B) B ## _Vec
561
562#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
563 B (*data); \
564 size_t used, size; \
565}
566
567DEFVECTOR(Param);
568DEFVECTOR(ParamInit);
569
570#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
571 p->used = 0; \
572 p->size = 23; \
573 Newx(p->data, p->size, B); \
574} static void N(VEC(B) *)
575
576DEFSTRUCT(ParamSpec) {
577 Param invocant;
578 VEC(Param) positional_required;
579 VEC(ParamInit) positional_optional;
580 VEC(Param) named_required;
581 VEC(ParamInit) named_optional;
582 Param slurpy;
fc634bba 583 PADOFFSET rest_hash;
e158cf8f 584};
585
586DEFVECTOR_INIT(pv_init, Param);
587DEFVECTOR_INIT(piv_init, ParamInit);
588
589static void p_init(Param *p) {
590 p->name = NULL;
591 p->padoff = NOT_IN_PAD;
51a483f8 592 p->type = NULL;
e158cf8f 593}
594
595static void ps_init(ParamSpec *ps) {
596 p_init(&ps->invocant);
597 pv_init(&ps->positional_required);
598 piv_init(&ps->positional_optional);
599 pv_init(&ps->named_required);
600 piv_init(&ps->named_optional);
601 p_init(&ps->slurpy);
fc634bba 602 ps->rest_hash = NOT_IN_PAD;
e158cf8f 603}
604
605#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
606 assert(p->used <= p->size); \
607 if (p->used == p->size) { \
608 const size_t n = p->size / 2 * 3 + 1; \
609 Renew(p->data, n, B); \
610 p->size = n; \
611 } \
612 return &p->data[p->used]; \
613} static B (*N(VEC(B) *))
614
615DEFVECTOR_EXTEND(pv_extend, Param);
616DEFVECTOR_EXTEND(piv_extend, ParamInit);
617
618#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
619 while (p->used) { \
620 p->used--; \
621 F(aTHX_ &p->data[p->used]); \
622 } \
623 Safefree(p->data); \
624 p->data = NULL; \
625 p->size = 0; \
626} static void N(pTHX_ VEC(B) *)
627
628static void p_clear(pTHX_ Param *p) {
629 p->name = NULL;
630 p->padoff = NOT_IN_PAD;
51a483f8 631 p->type = NULL;
e158cf8f 632}
633
634static void pi_clear(pTHX_ ParamInit *pi) {
635 p_clear(aTHX_ &pi->param);
ed95eeff 636 op_guard_clear(aTHX_ &pi->init);
e158cf8f 637}
638
639DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
640DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
641
642static void ps_clear(pTHX_ ParamSpec *ps) {
643 p_clear(aTHX_ &ps->invocant);
644
645 pv_clear(aTHX_ &ps->positional_required);
646 piv_clear(aTHX_ &ps->positional_optional);
647
648 pv_clear(aTHX_ &ps->named_required);
649 piv_clear(aTHX_ &ps->named_optional);
650
651 p_clear(aTHX_ &ps->slurpy);
652}
653
654static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
655 size_t i, lim;
656
657 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
658 return 1;
659 }
660
661 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
662 if (sv_eq(sv, ps->positional_required.data[i].name)) {
663 return 1;
664 }
665 }
666
667 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
668 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
669 return 1;
670 }
671 }
672
673 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
674 if (sv_eq(sv, ps->named_required.data[i].name)) {
675 return 1;
676 }
677 }
678
679 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
680 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
681 return 1;
682 }
683 }
684
685 return 0;
686}
687
688static void ps_free_void(pTHX_ void *p) {
689 ps_clear(aTHX_ p);
690 Safefree(p);
691}
692
693static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
694 int n = 0;
695 if (!ps) {
696 return SvTRUE(ks->shift) ? 1 : 0;
697 }
698 if (ps->invocant.name) {
699 n++;
700 }
701 n += ps->positional_required.used;
702 n += ps->named_required.used * 2;
703 return n;
704}
705
706static int args_max(const ParamSpec *ps) {
707 int n = 0;
708 if (!ps) {
709 return -1;
710 }
711 if (ps->invocant.name) {
712 n++;
713 }
714 n += ps->positional_required.used;
715 n += ps->positional_optional.used;
716 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
717 n = -1;
718 }
719 return n;
720}
721
722static size_t count_positional_params(const ParamSpec *ps) {
723 return ps->positional_required.used + ps->positional_optional.used;
724}
725
726static size_t count_named_params(const ParamSpec *ps) {
727 return ps->named_required.used + ps->named_optional.used;
728}
729
51a483f8 730static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
731 SV *sv;
732 CV *cv;
733 dSP;
734
735 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
736
737 ENTER;
738 SAVETMPS;
739
740 PUSHMARK(SP);
741 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
742 SPAGAIN;
743 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
744
745 PUTBACK;
746 FREETMPS;
747 LEAVE;
748
749 return sv;
750}
751
e158cf8f 752enum {
753 PARAM_INVOCANT = 0x01,
754 PARAM_NAMED = 0x02
755};
756
e158cf8f 757static PADOFFSET parse_param(
758 pTHX_
e4648f19 759 Sentinel sen,
e158cf8f 760 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
ed95eeff 761 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
e158cf8f 762) {
763 I32 c;
764 char sigil;
a4c13d40 765 SV *name;
e158cf8f 766
ed95eeff 767 assert(!ginit->op);
e158cf8f 768 *pflags = 0;
51a483f8 769 *ptype = NULL;
e158cf8f 770
771 c = lex_peek_unichar(0);
772
51a483f8 773 if (spec->flags & FLAG_TYPES_OK) {
774 if (c == '(') {
775 I32 floor;
776 OP *expr;
a4c13d40 777 Resource *expr_sentinel;
51a483f8 778
779 lex_read_unichar(0);
780
a4c13d40 781 floor = start_subparse(FALSE, 0);
782 SAVEFREESV(PL_compcv);
783 CvSPECIAL_on(PL_compcv);
51a483f8 784
785 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
786 croak("In %"SVf": invalid type expression", SVfARG(declarator));
787 }
ed95eeff 788 if (MY_OP_SLABBED(expr)) {
789 expr_sentinel = NULL;
790 } else {
791 expr_sentinel = sentinel_register(sen, expr, free_op_void);
792 }
51a483f8 793
794 lex_read_space(0);
795 c = lex_peek_unichar(0);
796 if (c != ')') {
797 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
798 }
799 lex_read_unichar(0);
800 lex_read_space(0);
801
a4c13d40 802 SvREFCNT_inc_simple_void(PL_compcv);
ed95eeff 803 if (expr_sentinel) {
804 sentinel_disarm(expr_sentinel);
805 }
51a483f8 806 *ptype = my_eval(aTHX_ sen, floor, expr);
52c18b0f 807 if (!SvROK(*ptype)) {
7193dffb 808 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
52c18b0f 809 }
51a483f8 810 if (!sv_isobject(*ptype)) {
811 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
812 }
813
814 c = lex_peek_unichar(0);
e6d62383 815 } else if (MY_UNI_IDFIRST(c)) {
a4c13d40 816 *ptype = parse_type(aTHX_ sen, declarator);
7193dffb 817 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
51a483f8 818
819 c = lex_peek_unichar(0);
820 }
821 }
822
e158cf8f 823 if (c == ':') {
824 lex_read_unichar(0);
825 lex_read_space(0);
826
827 *pflags |= PARAM_NAMED;
828
829 c = lex_peek_unichar(0);
830 }
831
832 if (c == -1) {
833 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
834 }
51a483f8 835
e158cf8f 836 if (!(c == '$' || c == '@' || c == '%')) {
837 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
838 }
839
840 sigil = c;
841
842 lex_read_unichar(0);
843 lex_read_space(0);
844
e4648f19 845 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
e158cf8f 846 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
847 }
848 sv_insert(name, 0, 0, &sigil, 1);
849 *pname = name;
850
851 lex_read_space(0);
852 c = lex_peek_unichar(0);
853
854 if (c == '=') {
855 lex_read_unichar(0);
856 lex_read_space(0);
857
858
859 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
860 param_spec->invocant.name = spec->shift;
861 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
862 }
863
ed95eeff 864 op_guard_update(ginit, parse_termexpr(0));
e158cf8f 865
866 lex_read_space(0);
867 c = lex_peek_unichar(0);
868 }
869
870 if (c == ':') {
871 *pflags |= PARAM_INVOCANT;
872 lex_read_unichar(0);
873 lex_read_space(0);
874 } else if (c == ',') {
875 lex_read_unichar(0);
876 lex_read_space(0);
877 } else if (c != ')') {
878 if (c == -1) {
879 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
880 }
881 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
882 }
883
884 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
885}
886
887static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
888 OP *var = newOP(type, flags);
889 var->op_targ = padoff;
890 return var;
891}
892
893static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
894 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
895}
896
fc634bba 897static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
898 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
899 return newBINOP(OP_HELEM, 0, hv, k);
900}
901
902static OP *mkconstsv(pTHX_ SV *sv) {
903 return newSVOP(OP_CONST, 0, sv);
904}
905
906static OP *mkconstiv(pTHX_ IV i) {
907 return mkconstsv(aTHX_ newSViv(i));
908}
909
910static OP *mkconstpv(pTHX_ const char *p, size_t n) {
911 return mkconstsv(aTHX_ newSVpv(p, n));
912}
913
914#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
915
51a483f8 916static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
917 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
a8492ba4 918 OP *chk, *err, *msg, *xcroak;
51a483f8 919
920 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
921 {
922 OP *args = NULL;
923
924 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
925 args = op_append_elem(
926 OP_LIST, args,
927 padoff == NOT_IN_PAD
928 ? S_newDEFSVOP(aTHX)
929 : my_var(aTHX_ 0, padoff)
930 );
931 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
932
933 msg = args;
934 msg->op_type = OP_ENTERSUB;
935 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
936 msg->op_flags |= OPf_STACKED;
937 }
938
939 msg = newBINOP(OP_CONCAT, 0, err, msg);
940
941 xcroak = newCVREF(
942 OPf_WANT_SCALAR,
943 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
944 );
945 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
946
947 {
948 OP *args = NULL;
949
950 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
951 args = op_append_elem(
952 OP_LIST, args,
953 padoff == NOT_IN_PAD
954 ? S_newDEFSVOP(aTHX)
955 : my_var(aTHX_ 0, padoff)
956 );
957 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
958
959 chk = args;
960 chk->op_type = OP_ENTERSUB;
961 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
962 chk->op_flags |= OPf_STACKED;
963 }
964
965 chk = newLOGOP(OP_OR, 0, chk, xcroak);
966 return chk;
967}
968
969static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
970 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
971}
972
53c979f0 973static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
974 dSP;
975
976 ENTER;
977 SAVETMPS;
978
979 PUSHMARK(SP);
51a483f8 980 EXTEND(SP, 10);
53c979f0 981
982 /* 0 */ {
983 mPUSHu(key);
984 }
985 /* 1 */ {
fd727b3e 986 STRLEN n;
53c979f0 987 char *p = SvPV(declarator, n);
988 char *q = memchr(p, ' ', n);
fd727b3e 989 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
990 mPUSHs(tmp);
53c979f0 991 }
992 if (!ps) {
993 if (SvTRUE(kws->shift)) {
994 PUSHs(kws->shift);
995 } else {
996 PUSHmortal;
997 }
51a483f8 998 PUSHmortal;
53c979f0 999 mPUSHs(newRV_noinc((SV *)newAV()));
1000 mPUSHs(newRV_noinc((SV *)newAV()));
1001 mPUSHs(newRV_noinc((SV *)newAV()));
1002 mPUSHs(newRV_noinc((SV *)newAV()));
1003 mPUSHp("@_", 2);
51a483f8 1004 PUSHmortal;
53c979f0 1005 } else {
51a483f8 1006 /* 2, 3 */ {
53c979f0 1007 if (ps->invocant.name) {
1008 PUSHs(ps->invocant.name);
51a483f8 1009 if (ps->invocant.type) {
1010 PUSHs(ps->invocant.type);
1011 } else {
1012 PUSHmortal;
1013 }
53c979f0 1014 } else {
1015 PUSHmortal;
51a483f8 1016 PUSHmortal;
53c979f0 1017 }
1018 }
51a483f8 1019 /* 4 */ {
53c979f0 1020 size_t i, lim;
1021 AV *av;
1022
1023 lim = ps->positional_required.used;
1024
1025 av = newAV();
1026 if (lim) {
51a483f8 1027 av_extend(av, (lim - 1) * 2);
53c979f0 1028 for (i = 0; i < lim; i++) {
51a483f8 1029 Param *cur = &ps->positional_required.data[i];
1030 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1031 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1032 }
1033 }
1034
1035 mPUSHs(newRV_noinc((SV *)av));
1036 }
51a483f8 1037 /* 5 */ {
53c979f0 1038 size_t i, lim;
1039 AV *av;
1040
1041 lim = ps->positional_optional.used;
1042
1043 av = newAV();
1044 if (lim) {
51a483f8 1045 av_extend(av, (lim - 1) * 2);
53c979f0 1046 for (i = 0; i < lim; i++) {
51a483f8 1047 Param *cur = &ps->positional_optional.data[i].param;
1048 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1049 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1050 }
1051 }
1052
1053 mPUSHs(newRV_noinc((SV *)av));
1054 }
51a483f8 1055 /* 6 */ {
53c979f0 1056 size_t i, lim;
1057 AV *av;
1058
1059 lim = ps->named_required.used;
1060
1061 av = newAV();
1062 if (lim) {
51a483f8 1063 av_extend(av, (lim - 1) * 2);
53c979f0 1064 for (i = 0; i < lim; i++) {
51a483f8 1065 Param *cur = &ps->named_required.data[i];
1066 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1067 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1068 }
1069 }
1070
1071 mPUSHs(newRV_noinc((SV *)av));
1072 }
51a483f8 1073 /* 7 */ {
53c979f0 1074 size_t i, lim;
1075 AV *av;
1076
1077 lim = ps->named_optional.used;
1078
1079 av = newAV();
1080 if (lim) {
51a483f8 1081 av_extend(av, (lim - 1) * 2);
53c979f0 1082 for (i = 0; i < lim; i++) {
51a483f8 1083 Param *cur = &ps->named_optional.data[i].param;
1084 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1085 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1086 }
1087 }
1088
1089 mPUSHs(newRV_noinc((SV *)av));
1090 }
51a483f8 1091 /* 8, 9 */ {
53c979f0 1092 if (ps->slurpy.name) {
1093 PUSHs(ps->slurpy.name);
51a483f8 1094 if (ps->slurpy.type) {
1095 PUSHs(ps->slurpy.type);
1096 } else {
1097 PUSHmortal;
1098 }
53c979f0 1099 } else {
1100 PUSHmortal;
51a483f8 1101 PUSHmortal;
53c979f0 1102 }
1103 }
1104 }
1105 PUTBACK;
1106
1107 call_pv(MY_PKG "::_register_info", G_VOID);
1108
1109 FREETMPS;
1110 LEAVE;
1111}
1112
e4648f19 1113static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
e158cf8f 1114 ParamSpec *param_spec;
c311cef3 1115 SV *declarator;
1116 I32 floor_ix;
63915d26 1117 int save_ix;
c311cef3 1118 SV *saw_name;
ed95eeff 1119 OpGuard *prelude_sentinel;
c311cef3 1120 SV *proto;
ed95eeff 1121 OpGuard *attrs_sentinel;
1122 OP *body;
c311cef3 1123 unsigned builtin_attrs;
db81d362 1124 I32 c;
1125
e4648f19 1126 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
fd727b3e 1127 if (lex_bufutf8()) {
1128 SvUTF8_on(declarator);
1129 }
db81d362 1130
db81d362 1131 lex_read_space(0);
1132
c311cef3 1133 builtin_attrs = 0;
1134
db81d362 1135 /* function name */
c311cef3 1136 saw_name = NULL;
e4648f19 1137 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
c311cef3 1138
1139 if (PL_parser->expect != XSTATE) {
1140 /* bail out early so we don't predeclare $saw_name */
1141 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1142 }
1143
db81d362 1144 sv_catpvs(declarator, " ");
c311cef3 1145 sv_catsv(declarator, saw_name);
1146
1147 if (
1148 sv_eq_pvs(saw_name, "BEGIN") ||
1149 sv_eq_pvs(saw_name, "END") ||
1150 sv_eq_pvs(saw_name, "INIT") ||
1151 sv_eq_pvs(saw_name, "CHECK") ||
1152 sv_eq_pvs(saw_name, "UNITCHECK")
1153 ) {
1154 builtin_attrs |= MY_ATTR_SPECIAL;
1155 }
1156
db81d362 1157 lex_read_space(0);
63915d26 1158 } else if (!(spec->flags & FLAG_ANON_OK)) {
31534187 1159 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
db81d362 1160 } else {
1161 sv_catpvs(declarator, " (anon)");
1162 }
1163
63915d26 1164 /* we're a subroutine declaration */
c311cef3 1165 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1166 SAVEFREESV(PL_compcv);
1167
63915d26 1168 /* create outer block: '{' */
1169 save_ix = S_block_start(aTHX_ TRUE);
1170
1e0f1595 1171 /* initialize synthetic optree */
ed95eeff 1172 Newx(prelude_sentinel, 1, OpGuard);
1173 op_guard_init(prelude_sentinel);
1174 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1e0f1595 1175
db81d362 1176 /* parameters */
e158cf8f 1177 param_spec = NULL;
63915d26 1178
db81d362 1179 c = lex_peek_unichar(0);
1180 if (c == '(') {
ed95eeff 1181 OpGuard *init_sentinel;
e158cf8f 1182
ed95eeff 1183 Newx(init_sentinel, 1, OpGuard);
1184 op_guard_init(init_sentinel);
1185 sentinel_register(sen, init_sentinel, free_op_guard_void);
e158cf8f 1186
1187 Newx(param_spec, 1, ParamSpec);
1188 ps_init(param_spec);
e4648f19 1189 sentinel_register(sen, param_spec, ps_free_void);
db81d362 1190
1191 lex_read_unichar(0);
1192 lex_read_space(0);
1193
e158cf8f 1194 while ((c = lex_peek_unichar(0)) != ')') {
1195 int flags;
51a483f8 1196 SV *name, *type;
e158cf8f 1197 char sigil;
1198 PADOFFSET padoff;
c311cef3 1199
51a483f8 1200 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
c311cef3 1201
e158cf8f 1202 S_intro_my(aTHX);
63915d26 1203
e158cf8f 1204 sigil = SvPV_nolen(name)[0];
db81d362 1205
e158cf8f 1206 /* internal consistency */
1207 if (flags & PARAM_NAMED) {
1208 if (flags & PARAM_INVOCANT) {
1209 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
db81d362 1210 }
e158cf8f 1211 if (sigil != '$') {
1212 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
db81d362 1213 }
e158cf8f 1214 } else if (flags & PARAM_INVOCANT) {
ed95eeff 1215 if (init_sentinel->op) {
e158cf8f 1216 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
db81d362 1217 }
e158cf8f 1218 if (sigil != '$') {
1219 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1220 }
ed95eeff 1221 } else if (sigil != '$' && init_sentinel->op) {
e158cf8f 1222 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1223 }
db81d362 1224
e158cf8f 1225 /* external constraints */
1226 if (param_spec->slurpy.name) {
1227 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1228 }
1229 if (sigil != '$') {
ed95eeff 1230 assert(!init_sentinel->op);
e158cf8f 1231 param_spec->slurpy.name = name;
1232 param_spec->slurpy.padoff = padoff;
51a483f8 1233 param_spec->slurpy.type = type;
e158cf8f 1234 continue;
1235 }
d8e5d540 1236
e158cf8f 1237 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1238 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));
1239 }
d8e5d540 1240
e158cf8f 1241 if (flags & PARAM_INVOCANT) {
1242 if (param_spec->invocant.name) {
1243 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1244 }
1245 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1246 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
63915d26 1247 }
e158cf8f 1248 if (!(spec->flags & FLAG_INVOCANT)) {
1249 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1250 }
1251 param_spec->invocant.name = name;
1252 param_spec->invocant.padoff = padoff;
51a483f8 1253 param_spec->invocant.type = type;
e158cf8f 1254 continue;
1255 }
63915d26 1256
ed95eeff 1257 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
e158cf8f 1258 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1259 }
1e0f1595 1260
e158cf8f 1261 if (ps_contains(aTHX_ param_spec, name)) {
1262 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1263 }
1e0f1595 1264
e158cf8f 1265 if (flags & PARAM_NAMED) {
1266 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1267 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1e0f1595 1268 }
1269
ed95eeff 1270 if (init_sentinel->op) {
e158cf8f 1271 ParamInit *pi = piv_extend(&param_spec->named_optional);
1272 pi->param.name = name;
1273 pi->param.padoff = padoff;
51a483f8 1274 pi->param.type = type;
ed95eeff 1275 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1276 param_spec->named_optional.used++;
1277 } else {
67fc1ddb 1278 Param *p;
1279
e158cf8f 1280 if (param_spec->positional_optional.used) {
1281 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));
1282 }
d8e5d540 1283
67fc1ddb 1284 p = pv_extend(&param_spec->named_required);
e158cf8f 1285 p->name = name;
1286 p->padoff = padoff;
51a483f8 1287 p->type = type;
e158cf8f 1288 param_spec->named_required.used++;
1289 }
1290 } else {
ed95eeff 1291 if (init_sentinel->op || param_spec->positional_optional.used) {
e158cf8f 1292 ParamInit *pi = piv_extend(&param_spec->positional_optional);
1293 pi->param.name = name;
1294 pi->param.padoff = padoff;
51a483f8 1295 pi->param.type = type;
ed95eeff 1296 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1297 param_spec->positional_optional.used++;
1298 } else {
1299 Param *p = pv_extend(&param_spec->positional_required);
1300 p->name = name;
1301 p->padoff = padoff;
51a483f8 1302 p->type = type;
e158cf8f 1303 param_spec->positional_required.used++;
db81d362 1304 }
1305 }
1306
e158cf8f 1307 }
1308 lex_read_unichar(0);
1309 lex_read_space(0);
db81d362 1310
e158cf8f 1311 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1312 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1313 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
db81d362 1314 }
e158cf8f 1315
1316 param_spec->invocant.name = spec->shift;
1317 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
db81d362 1318 }
1319 }
1320
1321 /* prototype */
c311cef3 1322 proto = NULL;
db81d362 1323 c = lex_peek_unichar(0);
1324 if (c == ':') {
1325 lex_read_unichar(0);
1326 lex_read_space(0);
1327
1328 c = lex_peek_unichar(0);
1329 if (c != '(') {
c311cef3 1330 lex_stuff_pvs(":", 0);
1331 c = ':';
db81d362 1332 } else {
31534187 1333 lex_read_unichar(0);
e4648f19 1334 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
f34187b8 1335 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
db81d362 1336 }
e4648f19 1337 my_check_prototype(aTHX_ sen, declarator, proto);
db81d362 1338 lex_read_space(0);
c311cef3 1339 c = lex_peek_unichar(0);
514bcaa6 1340 if (!(c == ':' || c == '{')) {
1341 lex_stuff_pvs(":", 0);
1342 c = ':';
1343 }
db81d362 1344 }
1345 }
1346
db81d362 1347 /* attributes */
ed95eeff 1348 Newx(attrs_sentinel, 1, OpGuard);
1349 op_guard_init(attrs_sentinel);
1350 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
c311cef3 1351
63915d26 1352 if (c == ':' || c == '{') /* '}' - hi, vim */ {
c311cef3 1353
1354 /* kludge default attributes in */
1355 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1356 lex_stuff_sv(spec->attrs, 0);
1357 c = ':';
1358 }
b72eb6ee 1359
db81d362 1360 if (c == ':') {
db81d362 1361 lex_read_unichar(0);
1362 lex_read_space(0);
db81d362 1363 c = lex_peek_unichar(0);
c311cef3 1364
1365 for (;;) {
1366 SV *attr;
1367
e4648f19 1368 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
c311cef3 1369 break;
db81d362 1370 }
c311cef3 1371
db81d362 1372 lex_read_space(0);
1373 c = lex_peek_unichar(0);
c311cef3 1374
1375 if (c != '(') {
1376 if (sv_eq_pvs(attr, "lvalue")) {
1377 builtin_attrs |= MY_ATTR_LVALUE;
1378 attr = NULL;
1379 } else if (sv_eq_pvs(attr, "method")) {
1380 builtin_attrs |= MY_ATTR_METHOD;
1381 attr = NULL;
1382 }
1383 } else {
31534187 1384 SV *sv;
1385 lex_read_unichar(0);
e4648f19 1386 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
c311cef3 1387 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1388 }
31534187 1389 sv_catpvs(attr, "(");
c311cef3 1390 sv_catsv(attr, sv);
31534187 1391 sv_catpvs(attr, ")");
c311cef3 1392
1393 lex_read_space(0);
1394 c = lex_peek_unichar(0);
1395 }
1396
1397 if (attr) {
ed95eeff 1398 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
c311cef3 1399 }
1400
1401 if (c == ':') {
1402 lex_read_unichar(0);
1403 lex_read_space(0);
1404 c = lex_peek_unichar(0);
1405 }
db81d362 1406 }
1407 }
1408 }
1409
1410 /* body */
63915d26 1411 if (c != '{') /* '}' - hi, vim */ {
85bc3fbd 1412 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
db81d362 1413 }
c311cef3 1414
63915d26 1415 /* surprise predeclaration! */
1416 if (saw_name) {
1417 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1418 starts parsing the body */
1419 const I32 sub_ix = start_subparse(FALSE, 0);
1420 SAVEFREESV(PL_compcv);
1421
1422 SvREFCNT_inc_simple_void(PL_compcv);
1423
1424 newATTRSUB(
1425 sub_ix,
fc634bba 1426 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1427 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
63915d26 1428 NULL,
1429 NULL
1430 );
1431 }
1432
c311cef3 1433 if (builtin_attrs & MY_ATTR_LVALUE) {
1434 CvLVALUE_on(PL_compcv);
db81d362 1435 }
c311cef3 1436 if (builtin_attrs & MY_ATTR_METHOD) {
1437 CvMETHOD_on(PL_compcv);
1438 }
1439 if (builtin_attrs & MY_ATTR_SPECIAL) {
1440 CvSPECIAL_on(PL_compcv);
db81d362 1441 }
1442
e158cf8f 1443 /* check number of arguments */
1e0f1595 1444 if (spec->flags & FLAG_CHECK_NARGS) {
e158cf8f 1445 int amin, amax;
abccbe86 1446
e158cf8f 1447 amin = args_min(aTHX_ param_spec, spec);
1448 if (amin > 0) {
51a483f8 1449 OP *chk, *cond, *err, *xcroak;
63915d26 1450
fc634bba 1451 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1452 err = newBINOP(
1453 OP_CONCAT, 0,
1454 err,
1455 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1456 );
1457 err = newBINOP(
1458 OP_CONCAT, 0,
1459 err,
1460 mkconstpvs(")")
1461 );
63915d26 1462
51a483f8 1463 xcroak = newCVREF(OPf_WANT_SCALAR,
1464 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1e0f1595 1465 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1466 op_append_elem(OP_LIST, err, xcroak));
63915d26 1467
1e0f1595 1468 cond = newBINOP(OP_LT, 0,
5f50e017 1469 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1470 mkconstiv(aTHX_ amin));
1e0f1595 1471 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1472
ed95eeff 1473 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1474 }
abccbe86 1475
e158cf8f 1476 amax = args_max(param_spec);
1477 if (amax >= 0) {
51a483f8 1478 OP *chk, *cond, *err, *xcroak;
63915d26 1479
fc634bba 1480 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1481 err = newBINOP(
1482 OP_CONCAT, 0,
1483 err,
1484 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1485 );
1486 err = newBINOP(
1487 OP_CONCAT, 0,
1488 err,
1489 mkconstpvs(")")
1490 );
63915d26 1491
51a483f8 1492 xcroak = newCVREF(
fc634bba 1493 OPf_WANT_SCALAR,
1494 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1495 );
1e0f1595 1496 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1497 op_append_elem(OP_LIST, err, xcroak));
63915d26 1498
fc634bba 1499 cond = newBINOP(
1500 OP_GT, 0,
1501 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1502 mkconstiv(aTHX_ amax)
1503 );
1e0f1595 1504 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1505
ed95eeff 1506 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1507 }
e158cf8f 1508
1509 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
51a483f8 1510 OP *chk, *cond, *err, *xcroak;
e158cf8f 1511 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
63915d26 1512
fc634bba 1513 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
63915d26 1514
51a483f8 1515 xcroak = newCVREF(
fc634bba 1516 OPf_WANT_SCALAR,
1517 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1518 );
1e0f1595 1519 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1520 op_append_elem(OP_LIST, err, xcroak));
63915d26 1521
1e0f1595 1522 cond = newBINOP(OP_GT, 0,
5f50e017 1523 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1524 mkconstiv(aTHX_ fixed));
e158cf8f 1525 cond = newLOGOP(OP_AND, 0,
fc634bba 1526 cond,
1527 newBINOP(OP_MODULO, 0,
1528 fixed
1529 ? newBINOP(OP_SUBTRACT, 0,
1530 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1531 mkconstiv(aTHX_ fixed))
1532 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1533 mkconstiv(aTHX_ 2)));
1e0f1595 1534 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1535
ed95eeff 1536 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
c311cef3 1537 }
1e0f1595 1538 }
c311cef3 1539
e158cf8f 1540 if (!param_spec) {
1541 /* my $invocant = shift; */
1542 if (SvTRUE(spec->shift)) {
1543 OP *var;
abccbe86 1544
e158cf8f 1545 var = my_var(
1546 aTHX_
1547 OPf_MOD | (OPpLVAL_INTRO << 8),
1548 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1549 );
1550 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
c311cef3 1551
ed95eeff 1552 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
e158cf8f 1553 }
1554 } else {
1555 /* my $invocant = shift; */
1556 if (param_spec->invocant.name) {
1557 OP *var;
c311cef3 1558
e158cf8f 1559 var = my_var(
1560 aTHX_
1561 OPf_MOD | (OPpLVAL_INTRO << 8),
1562 param_spec->invocant.padoff
1563 );
1564 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1e0f1595 1565
ed95eeff 1566 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
51a483f8 1567
1568 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
ed95eeff 1569 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, &param_spec->invocant))));
51a483f8 1570 }
c311cef3 1571 }
1572
e158cf8f 1573 /* my (...) = @_; */
1574 {
1575 OP *lhs;
1576 size_t i, lim;
63915d26 1577
e158cf8f 1578 lhs = NULL;
63915d26 1579
e158cf8f 1580 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1581 OP *const var = my_var(
1582 aTHX_
1583 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1584 param_spec->positional_required.data[i].padoff
1585 );
1586 lhs = op_append_elem(OP_LIST, lhs, var);
1587 }
63915d26 1588
e158cf8f 1589 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1590 OP *const var = my_var(
1591 aTHX_
1592 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1593 param_spec->positional_optional.data[i].param.padoff
1594 );
1595 lhs = op_append_elem(OP_LIST, lhs, var);
1596 }
63915d26 1597
fc634bba 1598 {
1599 PADOFFSET padoff;
1600 I32 type;
1601 bool slurpy_hash;
1602
1603 /*
1604 * cases:
1605 * 1) no named params
1606 * 1.1) slurpy
1607 * => put it in
1608 * 1.2) no slurpy
1609 * => nop
1610 * 2) named params
1611 * 2.1) no slurpy
1612 * => synthetic %{rest}
1613 * 2.2) slurpy is a hash
1614 * => put it in
1615 * 2.3) slurpy is an array
1616 * => synthetic %{rest}
1617 * remember to declare array later
1618 */
1619
1620 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1621 if (!count_named_params(param_spec)) {
1622 if (param_spec->slurpy.name) {
1623 padoff = param_spec->slurpy.padoff;
1624 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1625 } else {
1626 padoff = NOT_IN_PAD;
1627 type = OP_PADSV;
1628 }
1629 } else if (slurpy_hash) {
1630 padoff = param_spec->slurpy.padoff;
1631 type = OP_PADHV;
e158cf8f 1632 } else {
fc634bba 1633 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1634 type = OP_PADHV;
1635 }
1636
1637 if (padoff != NOT_IN_PAD) {
e158cf8f 1638 OP *const var = my_var_g(
1639 aTHX_
fc634bba 1640 type,
e158cf8f 1641 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
fc634bba 1642 padoff
e158cf8f 1643 );
fc634bba 1644
e158cf8f 1645 lhs = op_append_elem(OP_LIST, lhs, var);
fc634bba 1646
1647 if (type == OP_PADHV) {
1648 param_spec->rest_hash = padoff;
1649 }
e158cf8f 1650 }
1651 }
63915d26 1652
e158cf8f 1653 if (lhs) {
1654 OP *rhs;
1655 lhs->op_flags |= OPf_PARENS;
1656 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1657
ed95eeff 1658 op_guard_update(prelude_sentinel, op_append_list(
1659 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1660 newSTATEOP(
1661 0, NULL,
1662 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1663 )
ed95eeff 1664 ));
e158cf8f 1665 }
1666 }
63915d26 1667
fc634bba 1668 /* default positional arguments */
e158cf8f 1669 {
1670 size_t i, lim, req;
1671 OP *nest;
63915d26 1672
e158cf8f 1673 nest = NULL;
63915d26 1674
e158cf8f 1675 req = param_spec->positional_required.used;
1676 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1677 ParamInit *cur = &param_spec->positional_optional.data[i];
1678 OP *var, *cond;
63915d26 1679
e158cf8f 1680 cond = newBINOP(
1681 OP_LT, 0,
1682 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1683 mkconstiv(aTHX_ req + i + 1)
e158cf8f 1684 );
63915d26 1685
e158cf8f 1686 var = my_var(aTHX_ 0, cur->param.padoff);
63915d26 1687
e158cf8f 1688 nest = op_append_list(
1689 OP_LINESEQ, nest,
ed95eeff 1690 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
e158cf8f 1691 );
e158cf8f 1692 nest = newCONDOP(
1693 0,
1694 cond,
1695 nest,
1696 NULL
1697 );
1698 }
1e0f1595 1699
ed95eeff 1700 op_guard_update(prelude_sentinel, op_append_list(
1701 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1702 nest
ed95eeff 1703 ));
c311cef3 1704 }
1705
e158cf8f 1706 /* named parameters */
1707 if (count_named_params(param_spec)) {
fc634bba 1708 size_t i, lim;
1709
1710 assert(param_spec->rest_hash != NOT_IN_PAD);
1711
1712 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1713 Param *cur = &param_spec->named_required.data[i];
1714 size_t n;
1715 char *p = SvPV(cur->name, n);
1716 OP *var, *cond;
1717
1718 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1719
1720 if (spec->flags & FLAG_CHECK_NARGS) {
51a483f8 1721 OP *xcroak, *msg;
fc634bba 1722
1723 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1724 var = newUNOP(OP_DELETE, 0, var);
1725
1726 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
51a483f8 1727 xcroak = newCVREF(
fc634bba 1728 OPf_WANT_SCALAR,
1729 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1730 );
51a483f8 1731 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1732
1733 cond = newUNOP(OP_EXISTS, 0, cond);
1734
51a483f8 1735 cond = newCONDOP(0, cond, var, xcroak);
fc634bba 1736 }
1737
1738 var = my_var(
1739 aTHX_
1740 OPf_MOD | (OPpLVAL_INTRO << 8),
1741 cur->padoff
1742 );
1743 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1744
ed95eeff 1745 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1746 }
1747
1748 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1749 ParamInit *cur = &param_spec->named_optional.data[i];
1750 size_t n;
1751 char *p = SvPV(cur->param.name, n);
1752 OP *var, *cond;
1753
1754 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1755 var = newUNOP(OP_DELETE, 0, var);
1756
1757 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1758 cond = newUNOP(OP_EXISTS, 0, cond);
1759
ed95eeff 1760 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
fc634bba 1761
1762 var = my_var(
1763 aTHX_
1764 OPf_MOD | (OPpLVAL_INTRO << 8),
1765 cur->param.padoff
1766 );
1767 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1768
ed95eeff 1769 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1770 }
1771
1772 if (!param_spec->slurpy.name) {
1773 if (spec->flags & FLAG_CHECK_NARGS) {
1774 /* croak if %{rest} */
51a483f8 1775 OP *xcroak, *cond, *keys, *msg;
fc634bba 1776
1777 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1778 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1779 {
1780 OP *first, *mid, *last;
1781
1782 last = keys;
1783
1784 mid = mkconstpvs(", ");
1785 mid->op_sibling = last;
1786
1787 first = newOP(OP_PUSHMARK, 0);
1788
1789 keys = newLISTOP(OP_JOIN, 0, first, mid);
1790 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1791 ((LISTOP *)keys)->op_last = last;
1792 }
1793
1794 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1795 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1796
51a483f8 1797 xcroak = newCVREF(
fc634bba 1798 OPf_WANT_SCALAR,
1799 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1800 );
51a483f8 1801 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1802
1803 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
51a483f8 1804 xcroak = newCONDOP(0, cond, xcroak, NULL);
fc634bba 1805
ed95eeff 1806 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
fc634bba 1807 } else {
1808 OP *clear;
1809
1810 clear = newASSIGNOP(
1811 OPf_STACKED,
1812 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1813 0,
1814 newNULLLIST()
1815 );
1816
ed95eeff 1817 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1818 }
1819 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1820 OP *var, *clear;
1821
1822 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1823
1824 var = my_var_g(
1825 aTHX_
1826 OP_PADAV,
1827 OPf_MOD | (OPpLVAL_INTRO << 8),
1828 param_spec->slurpy.padoff
1829 );
1830
1831 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1832
ed95eeff 1833 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1834
1835 clear = newASSIGNOP(
1836 OPf_STACKED,
1837 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1838 0,
1839 newNULLLIST()
1840 );
1841
ed95eeff 1842 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1843 }
1844 }
51a483f8 1845
1846 if (spec->flags & FLAG_CHECK_TARGS) {
1847 size_t i, lim, base;
1848
1849 base = 1;
1850 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1851 Param *cur = &param_spec->positional_required.data[i];
1852
1853 if (cur->type) {
ed95eeff 1854 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1855 }
1856 }
1857 base += i;
1858
1859 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1860 Param *cur = &param_spec->positional_optional.data[i].param;
1861
1862 if (cur->type) {
ed95eeff 1863 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1864 }
1865 }
1866 base += i;
1867
1868 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1869 Param *cur = &param_spec->named_required.data[i];
1870
1871 if (cur->type) {
ed95eeff 1872 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1873 }
1874 }
1875 base += i;
1876
1877 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1878 Param *cur = &param_spec->named_optional.data[i].param;
1879
1880 if (cur->type) {
ed95eeff 1881 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1882 }
1883 }
1884 base += i;
1885
1886 if (param_spec->slurpy.type) {
1887 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
a8492ba4 1888 OP *check, *list, *loop;
51a483f8 1889
a8492ba4 1890 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
51a483f8 1891
1892 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1893 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1894 } else {
1895 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1896 list = newUNOP(OP_VALUES, 0, list);
1897 }
1898
a8492ba4 1899 loop = newFOROP(0, NULL, list, check, NULL);
51a483f8 1900
ed95eeff 1901 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
51a483f8 1902 }
1903 }
1e0f1595 1904 }
c311cef3 1905
1e0f1595 1906 /* finally let perl parse the actual subroutine body */
1907 body = parse_block(0);
c311cef3 1908
1e0f1595 1909 /* add '();' to make function return nothing by default */
1910 /* (otherwise the invisible parameter initialization can "leak" into
1911 the return value: fun ($x) {}->("asdf", 0) == 2) */
ed95eeff 1912 if (prelude_sentinel->op) {
1e0f1595 1913 body = newSTATEOP(0, NULL, body);
db81d362 1914 }
1915
ed95eeff 1916 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1e0f1595 1917
c311cef3 1918 /* it's go time. */
1919 {
53c979f0 1920 CV *cv;
ed95eeff 1921 OP *const attrs = op_guard_relinquish(attrs_sentinel);
53c979f0 1922
c311cef3 1923 SvREFCNT_inc_simple_void(PL_compcv);
1924
63915d26 1925 /* close outer block: '}' */
1926 S_block_end(aTHX_ save_ix, body);
1927
53c979f0 1928 cv = newATTRSUB(
c311cef3 1929 floor_ix,
53c979f0 1930 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
c311cef3 1931 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1932 attrs,
1933 body
1934 );
53c979f0 1935
2c1cb7bd 1936 if (cv) {
1937 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1938 }
53c979f0 1939
1940 if (saw_name) {
1941 *pop = newOP(OP_NULL, 0);
1942 return KEYWORD_PLUGIN_STMT;
1943 }
1944
1945 *pop = newUNOP(
1946 OP_REFGEN, 0,
1947 newSVOP(
1948 OP_ANONCODE, 0,
1949 (SV *)cv
1950 )
1951 );
1952 return KEYWORD_PLUGIN_EXPR;
db81d362 1953 }
db81d362 1954}
1955
8216fac4 1956static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1957 HV *hints;
1958 SV *sv, **psv;
1959 const char *p, *kw_active;
1960 STRLEN kw_active_len;
fd727b3e 1961 bool kw_is_utf8;
8216fac4 1962
1963 if (!(hints = GvHV(PL_hintgv))) {
1964 return FALSE;
1965 }
1966 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1967 return FALSE;
1968 }
1969 sv = *psv;
1970 kw_active = SvPV(sv, kw_active_len);
1971 if (kw_active_len <= kw_len) {
1972 return FALSE;
1973 }
fd727b3e 1974
1975 kw_is_utf8 = lex_bufutf8();
1976
8216fac4 1977 for (
1978 p = kw_active;
1979 (p = strchr(p, *kw_ptr)) &&
1980 p < kw_active + kw_active_len - kw_len;
1981 p++
1982 ) {
1983 if (
1984 (p == kw_active || p[-1] == ' ') &&
1985 p[kw_len] == ' ' &&
1986 memcmp(kw_ptr, p, kw_len) == 0
1987 ) {
1988 ENTER;
1989 SAVETMPS;
1990
1991 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1992
1993 spec->flags = 0;
7193dffb 1994 spec->reify_type = 0;
8216fac4 1995 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1996 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1997
1998#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1999 const char *fk_ptr_; \
2000 STRLEN fk_len_; \
fd727b3e 2001 I32 fk_xlen_; \
8216fac4 2002 SV *fk_sv_; \
2003 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
2004 sv_catpvn(fk_sv_, PTR, LEN); \
2005 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
fd727b3e 2006 fk_xlen_ = fk_len_; \
2007 if (kw_is_utf8) { \
2008 fk_xlen_ = -fk_xlen_; \
2009 } \
2010 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
8216fac4 2011 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2012 } \
2013} STMT_END
2014
2015 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2016 spec->flags = SvIV(*psv);
2017
7193dffb 2018 FETCH_HINTK_INTO(REIFY_, kw_ptr, kw_len, psv);
2019 spec->reify_type = SvIV(*psv);
2020
8216fac4 2021 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2022 SvSetSV(spec->shift, *psv);
2023
2024 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2025 SvSetSV(spec->attrs, *psv);
2026
2027#undef FETCH_HINTK_INTO
2028 return TRUE;
2029 }
2030 }
2031 return FALSE;
2032}
2033
db81d362 2034static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
8216fac4 2035 Sentinel sen = { NULL };
63915d26 2036 KWSpec spec;
db81d362 2037 int ret;
2038
8216fac4 2039 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2040 /* scope was entered, 'sen' and 'spec' are initialized */
e4648f19 2041 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
8216fac4 2042 FREETMPS;
2043 LEAVE;
db81d362 2044 } else {
8216fac4 2045 /* not one of our keywords, no allocation done */
7dd35535 2046 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
db81d362 2047 }
2048
db81d362 2049 return ret;
2050}
2051
2052WARNINGS_RESET
2053
53c979f0 2054MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
db81d362 2055PROTOTYPES: ENABLE
2056
53c979f0 2057UV
2058fp__cv_root(sv)
2059 SV * sv
2060 PREINIT:
79bce2d4 2061 CV *xcv;
53c979f0 2062 HV *hv;
2063 GV *gv;
2064 CODE:
79bce2d4 2065 xcv = sv_2cv(sv, &hv, &gv, 0);
2066 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
53c979f0 2067 OUTPUT:
2068 RETVAL
2069
db81d362 2070BOOT:
2071WARNINGS_ENABLE {
2072 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
426a4d69 2073 /**/
d8e5d540 2074 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2075 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
63915d26 2076 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
d8e5d540 2077 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2078 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
e158cf8f 2079 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
51a483f8 2080 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2081 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
db81d362 2082 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
d8e5d540 2083 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2084 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2085 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
7193dffb 2086 newCONSTSUB(stash, "HINTK_REIFY_", newSVpvs(HINTK_REIFY_));
426a4d69 2087 /**/
db81d362 2088 next_keyword_plugin = PL_keyword_plugin;
2089 PL_keyword_plugin = my_keyword_plugin;
2090} WARNINGS_RESET
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