projects / p5sagit/Function-Parameters.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | history | HEAD
Fixed the example showing parameter type constraints
[p5sagit/Function-Parameters.git] / Parameters.xs
CommitLineData
db81d362 1/*
2Copyright 2012 Lukas Mai.
3
4This program is free software; you can redistribute it and/or modify it
5under the terms of either: the GNU General Public License as published
6by the Free Software Foundation; or the Artistic License.
7
8See http://dev.perl.org/licenses/ for more information.
9 */
10
11#ifdef __GNUC__
12 #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ >= 5
13 #define PRAGMA_GCC_(X) _Pragma(#X)
14 #define PRAGMA_GCC(X) PRAGMA_GCC_(GCC X)
15 #endif
16#endif
17
18#ifndef PRAGMA_GCC
19 #define PRAGMA_GCC(X)
20#endif
21
22#ifdef DEVEL
23 #define WARNINGS_RESET PRAGMA_GCC(diagnostic pop)
24 #define WARNINGS_ENABLEW(X) PRAGMA_GCC(diagnostic warning #X)
25 #define WARNINGS_ENABLE \
26 WARNINGS_ENABLEW(-Wall) \
27 WARNINGS_ENABLEW(-Wextra) \
28 WARNINGS_ENABLEW(-Wundef) \
c3e72f35 29 /* WARNINGS_ENABLEW(-Wshadow) :-( */ \
db81d362 30 WARNINGS_ENABLEW(-Wbad-function-cast) \
31 WARNINGS_ENABLEW(-Wcast-align) \
32 WARNINGS_ENABLEW(-Wwrite-strings) \
33 /* WARNINGS_ENABLEW(-Wnested-externs) wtf? */ \
34 WARNINGS_ENABLEW(-Wstrict-prototypes) \
35 WARNINGS_ENABLEW(-Wmissing-prototypes) \
36 WARNINGS_ENABLEW(-Winline) \
37 WARNINGS_ENABLEW(-Wdisabled-optimization)
38
39#else
40 #define WARNINGS_RESET
1bc47886 41 #define WARNINGS_ENABLE
db81d362 42#endif
43
44
7dd35535 45#define PERL_NO_GET_CONTEXT
db81d362 46#include "EXTERN.h"
47#include "perl.h"
48#include "XSUB.h"
49
50#include <string.h>
51
63915d26 52
db81d362 53WARNINGS_ENABLE
54
db81d362 55
7dd35535 56#define HAVE_PERL_VERSION(R, V, S) \
57 (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
58
de013990 59#if HAVE_PERL_VERSION(5, 16, 0)
60 #define IF_HAVE_PERL_5_16(YES, NO) YES
61#else
62 #define IF_HAVE_PERL_5_16(YES, NO) NO
63#endif
64
e158cf8f 65#if 0
66 #if HAVE_PERL_VERSION(5, 17, 6)
67 #error "internal error: missing definition of KEY_my (your perl is too new)"
68 #elif HAVE_PERL_VERSION(5, 15, 8)
69 #define S_KEY_my 134
70 #elif HAVE_PERL_VERSION(5, 15, 6)
71 #define S_KEY_my 133
72 #elif HAVE_PERL_VERSION(5, 15, 5)
73 #define S_KEY_my 132
74 #elif HAVE_PERL_VERSION(5, 13, 0)
75 #define S_KEY_my 131
76 #else
77 #error "internal error: missing definition of KEY_my (your perl is too old)"
78 #endif
79#endif
80
63915d26 81
82#define MY_PKG "Function::Parameters"
83
84#define HINTK_KEYWORDS MY_PKG "/keywords"
85#define HINTK_FLAGS_ MY_PKG "/flags:"
86#define HINTK_SHIFT_ MY_PKG "/shift:"
87#define HINTK_ATTRS_ MY_PKG "/attrs:"
7193dffb 88#define HINTK_REIFY_ MY_PKG "/reify:"
63915d26 89
90#define DEFSTRUCT(T) typedef struct T T; struct T
91
63915d26 92enum {
93 FLAG_NAME_OK = 0x01,
94 FLAG_ANON_OK = 0x02,
95 FLAG_DEFAULT_ARGS = 0x04,
d8e5d540 96 FLAG_CHECK_NARGS = 0x08,
e158cf8f 97 FLAG_INVOCANT = 0x10,
51a483f8 98 FLAG_NAMED_PARAMS = 0x20,
99 FLAG_TYPES_OK = 0x40,
100 FLAG_CHECK_TARGS = 0x80
63915d26 101};
102
103DEFSTRUCT(KWSpec) {
104 unsigned flags;
7193dffb 105 I32 reify_type;
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
7193dffb 500static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, const KWSpec *spec, SV *name) {
501 AV *type_reifiers;
502 SV *t, *sv, **psv;
51a483f8 503 int n;
504 dSP;
505
7193dffb 506 type_reifiers = get_av(MY_PKG "::type_reifiers", 0);
507 assert(type_reifiers != NULL);
508
509 if (spec->reify_type < 0 || spec->reify_type > av_len(type_reifiers)) {
510 croak("In %"SVf": internal error: reify_type [%ld] out of range [%ld]", SVfARG(declarator), (long)spec->reify_type, (long)(av_len(type_reifiers) + 1));
511 }
512
513 psv = av_fetch(type_reifiers, spec->reify_type, 0);
514 assert(psv != NULL);
515 sv = *psv;
52c18b0f 516
51a483f8 517 ENTER;
518 SAVETMPS;
519
520 PUSHMARK(SP);
e7c6de2c 521 EXTEND(SP, 2);
51a483f8 522 PUSHs(name);
e7c6de2c 523 PUSHs(PL_curstname);
51a483f8 524 PUTBACK;
525
7193dffb 526 n = call_sv(sv, G_SCALAR);
51a483f8 527 SPAGAIN;
528
529 assert(n == 1);
a8492ba4 530 /* don't warn about n being unused if assert() is compiled out */
531 n = n;
532
51a483f8 533 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
534
535 PUTBACK;
536 FREETMPS;
537 LEAVE;
538
539 if (!SvTRUE(t)) {
540 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
541 }
542
543 return t;
544}
545
e158cf8f 546
547DEFSTRUCT(Param) {
548 SV *name;
549 PADOFFSET padoff;
51a483f8 550 SV *type;
e158cf8f 551};
552
553DEFSTRUCT(ParamInit) {
554 Param param;
ed95eeff 555 OpGuard init;
e158cf8f 556};
557
558#define VEC(B) B ## _Vec
559
560#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
561 B (*data); \
562 size_t used, size; \
563}
564
565DEFVECTOR(Param);
566DEFVECTOR(ParamInit);
567
568#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
569 p->used = 0; \
570 p->size = 23; \
571 Newx(p->data, p->size, B); \
572} static void N(VEC(B) *)
573
574DEFSTRUCT(ParamSpec) {
575 Param invocant;
576 VEC(Param) positional_required;
577 VEC(ParamInit) positional_optional;
578 VEC(Param) named_required;
579 VEC(ParamInit) named_optional;
580 Param slurpy;
fc634bba 581 PADOFFSET rest_hash;
e158cf8f 582};
583
584DEFVECTOR_INIT(pv_init, Param);
585DEFVECTOR_INIT(piv_init, ParamInit);
586
587static void p_init(Param *p) {
588 p->name = NULL;
589 p->padoff = NOT_IN_PAD;
51a483f8 590 p->type = NULL;
e158cf8f 591}
592
593static void ps_init(ParamSpec *ps) {
594 p_init(&ps->invocant);
595 pv_init(&ps->positional_required);
596 piv_init(&ps->positional_optional);
597 pv_init(&ps->named_required);
598 piv_init(&ps->named_optional);
599 p_init(&ps->slurpy);
fc634bba 600 ps->rest_hash = NOT_IN_PAD;
e158cf8f 601}
602
603#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
604 assert(p->used <= p->size); \
605 if (p->used == p->size) { \
606 const size_t n = p->size / 2 * 3 + 1; \
607 Renew(p->data, n, B); \
608 p->size = n; \
609 } \
610 return &p->data[p->used]; \
611} static B (*N(VEC(B) *))
612
613DEFVECTOR_EXTEND(pv_extend, Param);
614DEFVECTOR_EXTEND(piv_extend, ParamInit);
615
616#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
617 while (p->used) { \
618 p->used--; \
619 F(aTHX_ &p->data[p->used]); \
620 } \
621 Safefree(p->data); \
622 p->data = NULL; \
623 p->size = 0; \
624} static void N(pTHX_ VEC(B) *)
625
626static void p_clear(pTHX_ Param *p) {
627 p->name = NULL;
628 p->padoff = NOT_IN_PAD;
51a483f8 629 p->type = NULL;
e158cf8f 630}
631
632static void pi_clear(pTHX_ ParamInit *pi) {
633 p_clear(aTHX_ &pi->param);
ed95eeff 634 op_guard_clear(aTHX_ &pi->init);
e158cf8f 635}
636
637DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
638DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
639
640static void ps_clear(pTHX_ ParamSpec *ps) {
641 p_clear(aTHX_ &ps->invocant);
642
643 pv_clear(aTHX_ &ps->positional_required);
644 piv_clear(aTHX_ &ps->positional_optional);
645
646 pv_clear(aTHX_ &ps->named_required);
647 piv_clear(aTHX_ &ps->named_optional);
648
649 p_clear(aTHX_ &ps->slurpy);
650}
651
652static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
653 size_t i, lim;
654
655 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
656 return 1;
657 }
658
659 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
660 if (sv_eq(sv, ps->positional_required.data[i].name)) {
661 return 1;
662 }
663 }
664
665 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
666 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
667 return 1;
668 }
669 }
670
671 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
672 if (sv_eq(sv, ps->named_required.data[i].name)) {
673 return 1;
674 }
675 }
676
677 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
678 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
679 return 1;
680 }
681 }
682
683 return 0;
684}
685
686static void ps_free_void(pTHX_ void *p) {
687 ps_clear(aTHX_ p);
688 Safefree(p);
689}
690
691static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
692 int n = 0;
693 if (!ps) {
694 return SvTRUE(ks->shift) ? 1 : 0;
695 }
696 if (ps->invocant.name) {
697 n++;
698 }
699 n += ps->positional_required.used;
700 n += ps->named_required.used * 2;
701 return n;
702}
703
704static int args_max(const ParamSpec *ps) {
705 int n = 0;
706 if (!ps) {
707 return -1;
708 }
709 if (ps->invocant.name) {
710 n++;
711 }
712 n += ps->positional_required.used;
713 n += ps->positional_optional.used;
714 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
715 n = -1;
716 }
717 return n;
718}
719
720static size_t count_positional_params(const ParamSpec *ps) {
721 return ps->positional_required.used + ps->positional_optional.used;
722}
723
724static size_t count_named_params(const ParamSpec *ps) {
725 return ps->named_required.used + ps->named_optional.used;
726}
727
51a483f8 728static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
729 SV *sv;
730 CV *cv;
731 dSP;
732
733 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
734
735 ENTER;
736 SAVETMPS;
737
738 PUSHMARK(SP);
739 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
740 SPAGAIN;
741 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
742
743 PUTBACK;
744 FREETMPS;
745 LEAVE;
746
747 return sv;
748}
749
e158cf8f 750enum {
751 PARAM_INVOCANT = 0x01,
752 PARAM_NAMED = 0x02
753};
754
e158cf8f 755static PADOFFSET parse_param(
756 pTHX_
e4648f19 757 Sentinel sen,
e158cf8f 758 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
ed95eeff 759 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
e158cf8f 760) {
761 I32 c;
762 char sigil;
a4c13d40 763 SV *name;
e158cf8f 764
ed95eeff 765 assert(!ginit->op);
e158cf8f 766 *pflags = 0;
51a483f8 767 *ptype = NULL;
e158cf8f 768
769 c = lex_peek_unichar(0);
770
51a483f8 771 if (spec->flags & FLAG_TYPES_OK) {
772 if (c == '(') {
773 I32 floor;
774 OP *expr;
a4c13d40 775 Resource *expr_sentinel;
51a483f8 776
777 lex_read_unichar(0);
778
a4c13d40 779 floor = start_subparse(FALSE, 0);
780 SAVEFREESV(PL_compcv);
781 CvSPECIAL_on(PL_compcv);
51a483f8 782
783 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
784 croak("In %"SVf": invalid type expression", SVfARG(declarator));
785 }
ed95eeff 786 if (MY_OP_SLABBED(expr)) {
787 expr_sentinel = NULL;
788 } else {
789 expr_sentinel = sentinel_register(sen, expr, free_op_void);
790 }
51a483f8 791
792 lex_read_space(0);
793 c = lex_peek_unichar(0);
794 if (c != ')') {
795 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
796 }
797 lex_read_unichar(0);
798 lex_read_space(0);
799
a4c13d40 800 SvREFCNT_inc_simple_void(PL_compcv);
ed95eeff 801 if (expr_sentinel) {
802 sentinel_disarm(expr_sentinel);
803 }
51a483f8 804 *ptype = my_eval(aTHX_ sen, floor, expr);
52c18b0f 805 if (!SvROK(*ptype)) {
7193dffb 806 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
52c18b0f 807 }
51a483f8 808 if (!sv_isobject(*ptype)) {
809 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
810 }
811
812 c = lex_peek_unichar(0);
e6d62383 813 } else if (MY_UNI_IDFIRST(c)) {
a4c13d40 814 *ptype = parse_type(aTHX_ sen, declarator);
7193dffb 815 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
51a483f8 816
817 c = lex_peek_unichar(0);
818 }
819 }
820
e158cf8f 821 if (c == ':') {
822 lex_read_unichar(0);
823 lex_read_space(0);
824
825 *pflags |= PARAM_NAMED;
826
827 c = lex_peek_unichar(0);
828 }
829
830 if (c == -1) {
831 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
832 }
51a483f8 833
e158cf8f 834 if (!(c == '$' || c == '@' || c == '%')) {
835 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
836 }
837
838 sigil = c;
839
840 lex_read_unichar(0);
841 lex_read_space(0);
842
e4648f19 843 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
e158cf8f 844 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
845 }
846 sv_insert(name, 0, 0, &sigil, 1);
847 *pname = name;
848
849 lex_read_space(0);
850 c = lex_peek_unichar(0);
851
852 if (c == '=') {
853 lex_read_unichar(0);
854 lex_read_space(0);
855
856
857 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
858 param_spec->invocant.name = spec->shift;
859 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
860 }
861
ed95eeff 862 op_guard_update(ginit, parse_termexpr(0));
e158cf8f 863
864 lex_read_space(0);
865 c = lex_peek_unichar(0);
866 }
867
868 if (c == ':') {
869 *pflags |= PARAM_INVOCANT;
870 lex_read_unichar(0);
871 lex_read_space(0);
872 } else if (c == ',') {
873 lex_read_unichar(0);
874 lex_read_space(0);
875 } else if (c != ')') {
876 if (c == -1) {
877 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
878 }
879 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
880 }
881
882 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
883}
884
885static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
886 OP *var = newOP(type, flags);
887 var->op_targ = padoff;
888 return var;
889}
890
891static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
892 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
893}
894
fc634bba 895static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
896 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
897 return newBINOP(OP_HELEM, 0, hv, k);
898}
899
900static OP *mkconstsv(pTHX_ SV *sv) {
901 return newSVOP(OP_CONST, 0, sv);
902}
903
904static OP *mkconstiv(pTHX_ IV i) {
905 return mkconstsv(aTHX_ newSViv(i));
906}
907
908static OP *mkconstpv(pTHX_ const char *p, size_t n) {
909 return mkconstsv(aTHX_ newSVpv(p, n));
910}
911
912#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
913
51a483f8 914static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
915 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
a8492ba4 916 OP *chk, *err, *msg, *xcroak;
51a483f8 917
918 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
919 {
920 OP *args = NULL;
921
922 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
923 args = op_append_elem(
924 OP_LIST, args,
925 padoff == NOT_IN_PAD
926 ? S_newDEFSVOP(aTHX)
927 : my_var(aTHX_ 0, padoff)
928 );
929 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
930
931 msg = args;
932 msg->op_type = OP_ENTERSUB;
933 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
934 msg->op_flags |= OPf_STACKED;
935 }
936
937 msg = newBINOP(OP_CONCAT, 0, err, msg);
938
939 xcroak = newCVREF(
940 OPf_WANT_SCALAR,
941 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
942 );
943 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
944
945 {
946 OP *args = NULL;
947
948 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
949 args = op_append_elem(
950 OP_LIST, args,
951 padoff == NOT_IN_PAD
952 ? S_newDEFSVOP(aTHX)
953 : my_var(aTHX_ 0, padoff)
954 );
955 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
956
957 chk = args;
958 chk->op_type = OP_ENTERSUB;
959 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
960 chk->op_flags |= OPf_STACKED;
961 }
962
963 chk = newLOGOP(OP_OR, 0, chk, xcroak);
964 return chk;
965}
966
967static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
968 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
969}
970
53c979f0 971static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
972 dSP;
973
974 ENTER;
975 SAVETMPS;
976
977 PUSHMARK(SP);
51a483f8 978 EXTEND(SP, 10);
53c979f0 979
980 /* 0 */ {
981 mPUSHu(key);
982 }
983 /* 1 */ {
fd727b3e 984 STRLEN n;
53c979f0 985 char *p = SvPV(declarator, n);
986 char *q = memchr(p, ' ', n);
fd727b3e 987 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
988 mPUSHs(tmp);
53c979f0 989 }
990 if (!ps) {
991 if (SvTRUE(kws->shift)) {
992 PUSHs(kws->shift);
993 } else {
994 PUSHmortal;
995 }
51a483f8 996 PUSHmortal;
53c979f0 997 mPUSHs(newRV_noinc((SV *)newAV()));
998 mPUSHs(newRV_noinc((SV *)newAV()));
999 mPUSHs(newRV_noinc((SV *)newAV()));
1000 mPUSHs(newRV_noinc((SV *)newAV()));
1001 mPUSHp("@_", 2);
51a483f8 1002 PUSHmortal;
53c979f0 1003 } else {
51a483f8 1004 /* 2, 3 */ {
53c979f0 1005 if (ps->invocant.name) {
1006 PUSHs(ps->invocant.name);
51a483f8 1007 if (ps->invocant.type) {
1008 PUSHs(ps->invocant.type);
1009 } else {
1010 PUSHmortal;
1011 }
53c979f0 1012 } else {
1013 PUSHmortal;
51a483f8 1014 PUSHmortal;
53c979f0 1015 }
1016 }
51a483f8 1017 /* 4 */ {
53c979f0 1018 size_t i, lim;
1019 AV *av;
1020
1021 lim = ps->positional_required.used;
1022
1023 av = newAV();
1024 if (lim) {
51a483f8 1025 av_extend(av, (lim - 1) * 2);
53c979f0 1026 for (i = 0; i < lim; i++) {
51a483f8 1027 Param *cur = &ps->positional_required.data[i];
1028 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1029 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1030 }
1031 }
1032
1033 mPUSHs(newRV_noinc((SV *)av));
1034 }
51a483f8 1035 /* 5 */ {
53c979f0 1036 size_t i, lim;
1037 AV *av;
1038
1039 lim = ps->positional_optional.used;
1040
1041 av = newAV();
1042 if (lim) {
51a483f8 1043 av_extend(av, (lim - 1) * 2);
53c979f0 1044 for (i = 0; i < lim; i++) {
51a483f8 1045 Param *cur = &ps->positional_optional.data[i].param;
1046 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1047 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1048 }
1049 }
1050
1051 mPUSHs(newRV_noinc((SV *)av));
1052 }
51a483f8 1053 /* 6 */ {
53c979f0 1054 size_t i, lim;
1055 AV *av;
1056
1057 lim = ps->named_required.used;
1058
1059 av = newAV();
1060 if (lim) {
51a483f8 1061 av_extend(av, (lim - 1) * 2);
53c979f0 1062 for (i = 0; i < lim; i++) {
51a483f8 1063 Param *cur = &ps->named_required.data[i];
1064 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1065 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1066 }
1067 }
1068
1069 mPUSHs(newRV_noinc((SV *)av));
1070 }
51a483f8 1071 /* 7 */ {
53c979f0 1072 size_t i, lim;
1073 AV *av;
1074
1075 lim = ps->named_optional.used;
1076
1077 av = newAV();
1078 if (lim) {
51a483f8 1079 av_extend(av, (lim - 1) * 2);
53c979f0 1080 for (i = 0; i < lim; i++) {
51a483f8 1081 Param *cur = &ps->named_optional.data[i].param;
1082 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1083 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1084 }
1085 }
1086
1087 mPUSHs(newRV_noinc((SV *)av));
1088 }
51a483f8 1089 /* 8, 9 */ {
53c979f0 1090 if (ps->slurpy.name) {
1091 PUSHs(ps->slurpy.name);
51a483f8 1092 if (ps->slurpy.type) {
1093 PUSHs(ps->slurpy.type);
1094 } else {
1095 PUSHmortal;
1096 }
53c979f0 1097 } else {
1098 PUSHmortal;
51a483f8 1099 PUSHmortal;
53c979f0 1100 }
1101 }
1102 }
1103 PUTBACK;
1104
1105 call_pv(MY_PKG "::_register_info", G_VOID);
1106
1107 FREETMPS;
1108 LEAVE;
1109}
1110
e4648f19 1111static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
e158cf8f 1112 ParamSpec *param_spec;
c311cef3 1113 SV *declarator;
1114 I32 floor_ix;
63915d26 1115 int save_ix;
c311cef3 1116 SV *saw_name;
ed95eeff 1117 OpGuard *prelude_sentinel;
c311cef3 1118 SV *proto;
ed95eeff 1119 OpGuard *attrs_sentinel;
1120 OP *body;
c311cef3 1121 unsigned builtin_attrs;
db81d362 1122 I32 c;
1123
e4648f19 1124 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
fd727b3e 1125 if (lex_bufutf8()) {
1126 SvUTF8_on(declarator);
1127 }
db81d362 1128
db81d362 1129 lex_read_space(0);
1130
c311cef3 1131 builtin_attrs = 0;
1132
db81d362 1133 /* function name */
c311cef3 1134 saw_name = NULL;
e4648f19 1135 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
c311cef3 1136
1137 if (PL_parser->expect != XSTATE) {
1138 /* bail out early so we don't predeclare $saw_name */
1139 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1140 }
1141
db81d362 1142 sv_catpvs(declarator, " ");
c311cef3 1143 sv_catsv(declarator, saw_name);
1144
1145 if (
1146 sv_eq_pvs(saw_name, "BEGIN") ||
1147 sv_eq_pvs(saw_name, "END") ||
1148 sv_eq_pvs(saw_name, "INIT") ||
1149 sv_eq_pvs(saw_name, "CHECK") ||
1150 sv_eq_pvs(saw_name, "UNITCHECK")
1151 ) {
1152 builtin_attrs |= MY_ATTR_SPECIAL;
1153 }
1154
db81d362 1155 lex_read_space(0);
63915d26 1156 } else if (!(spec->flags & FLAG_ANON_OK)) {
31534187 1157 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
db81d362 1158 } else {
1159 sv_catpvs(declarator, " (anon)");
1160 }
1161
63915d26 1162 /* we're a subroutine declaration */
c311cef3 1163 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1164 SAVEFREESV(PL_compcv);
1165
63915d26 1166 /* create outer block: '{' */
1167 save_ix = S_block_start(aTHX_ TRUE);
1168
1e0f1595 1169 /* initialize synthetic optree */
ed95eeff 1170 Newx(prelude_sentinel, 1, OpGuard);
1171 op_guard_init(prelude_sentinel);
1172 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1e0f1595 1173
db81d362 1174 /* parameters */
e158cf8f 1175 param_spec = NULL;
63915d26 1176
db81d362 1177 c = lex_peek_unichar(0);
1178 if (c == '(') {
ed95eeff 1179 OpGuard *init_sentinel;
e158cf8f 1180
ed95eeff 1181 Newx(init_sentinel, 1, OpGuard);
1182 op_guard_init(init_sentinel);
1183 sentinel_register(sen, init_sentinel, free_op_guard_void);
e158cf8f 1184
1185 Newx(param_spec, 1, ParamSpec);
1186 ps_init(param_spec);
e4648f19 1187 sentinel_register(sen, param_spec, ps_free_void);
db81d362 1188
1189 lex_read_unichar(0);
1190 lex_read_space(0);
1191
e158cf8f 1192 while ((c = lex_peek_unichar(0)) != ')') {
1193 int flags;
51a483f8 1194 SV *name, *type;
e158cf8f 1195 char sigil;
1196 PADOFFSET padoff;
c311cef3 1197
51a483f8 1198 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
c311cef3 1199
e158cf8f 1200 S_intro_my(aTHX);
63915d26 1201
e158cf8f 1202 sigil = SvPV_nolen(name)[0];
db81d362 1203
e158cf8f 1204 /* internal consistency */
1205 if (flags & PARAM_NAMED) {
1206 if (flags & PARAM_INVOCANT) {
1207 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
db81d362 1208 }
e158cf8f 1209 if (sigil != '$') {
1210 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
db81d362 1211 }
e158cf8f 1212 } else if (flags & PARAM_INVOCANT) {
ed95eeff 1213 if (init_sentinel->op) {
e158cf8f 1214 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
db81d362 1215 }
e158cf8f 1216 if (sigil != '$') {
1217 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1218 }
ed95eeff 1219 } else if (sigil != '$' && init_sentinel->op) {
e158cf8f 1220 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1221 }
db81d362 1222
e158cf8f 1223 /* external constraints */
1224 if (param_spec->slurpy.name) {
1225 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1226 }
1227 if (sigil != '$') {
ed95eeff 1228 assert(!init_sentinel->op);
e158cf8f 1229 param_spec->slurpy.name = name;
1230 param_spec->slurpy.padoff = padoff;
51a483f8 1231 param_spec->slurpy.type = type;
e158cf8f 1232 continue;
1233 }
d8e5d540 1234
e158cf8f 1235 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1236 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));
1237 }
d8e5d540 1238
e158cf8f 1239 if (flags & PARAM_INVOCANT) {
1240 if (param_spec->invocant.name) {
1241 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1242 }
1243 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1244 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
63915d26 1245 }
e158cf8f 1246 if (!(spec->flags & FLAG_INVOCANT)) {
1247 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1248 }
1249 param_spec->invocant.name = name;
1250 param_spec->invocant.padoff = padoff;
51a483f8 1251 param_spec->invocant.type = type;
e158cf8f 1252 continue;
1253 }
63915d26 1254
ed95eeff 1255 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
e158cf8f 1256 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1257 }
1e0f1595 1258
e158cf8f 1259 if (ps_contains(aTHX_ param_spec, name)) {
1260 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1261 }
1e0f1595 1262
e158cf8f 1263 if (flags & PARAM_NAMED) {
1264 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1265 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1e0f1595 1266 }
1267
ed95eeff 1268 if (init_sentinel->op) {
e158cf8f 1269 ParamInit *pi = piv_extend(&param_spec->named_optional);
1270 pi->param.name = name;
1271 pi->param.padoff = padoff;
51a483f8 1272 pi->param.type = type;
ed95eeff 1273 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1274 param_spec->named_optional.used++;
1275 } else {
67fc1ddb 1276 Param *p;
1277
e158cf8f 1278 if (param_spec->positional_optional.used) {
1279 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));
1280 }
d8e5d540 1281
67fc1ddb 1282 p = pv_extend(&param_spec->named_required);
e158cf8f 1283 p->name = name;
1284 p->padoff = padoff;
51a483f8 1285 p->type = type;
e158cf8f 1286 param_spec->named_required.used++;
1287 }
1288 } else {
ed95eeff 1289 if (init_sentinel->op || param_spec->positional_optional.used) {
e158cf8f 1290 ParamInit *pi = piv_extend(&param_spec->positional_optional);
1291 pi->param.name = name;
1292 pi->param.padoff = padoff;
51a483f8 1293 pi->param.type = type;
ed95eeff 1294 pi->init = op_guard_transfer(init_sentinel);
e158cf8f 1295 param_spec->positional_optional.used++;
1296 } else {
1297 Param *p = pv_extend(&param_spec->positional_required);
1298 p->name = name;
1299 p->padoff = padoff;
51a483f8 1300 p->type = type;
e158cf8f 1301 param_spec->positional_required.used++;
db81d362 1302 }
1303 }
1304
e158cf8f 1305 }
1306 lex_read_unichar(0);
1307 lex_read_space(0);
db81d362 1308
e158cf8f 1309 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1310 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1311 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
db81d362 1312 }
e158cf8f 1313
1314 param_spec->invocant.name = spec->shift;
1315 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
db81d362 1316 }
1317 }
1318
1319 /* prototype */
c311cef3 1320 proto = NULL;
db81d362 1321 c = lex_peek_unichar(0);
1322 if (c == ':') {
1323 lex_read_unichar(0);
1324 lex_read_space(0);
1325
1326 c = lex_peek_unichar(0);
1327 if (c != '(') {
c311cef3 1328 lex_stuff_pvs(":", 0);
1329 c = ':';
db81d362 1330 } else {
31534187 1331 lex_read_unichar(0);
e4648f19 1332 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
f34187b8 1333 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
db81d362 1334 }
e4648f19 1335 my_check_prototype(aTHX_ sen, declarator, proto);
db81d362 1336 lex_read_space(0);
c311cef3 1337 c = lex_peek_unichar(0);
514bcaa6 1338 if (!(c == ':' || c == '{')) {
1339 lex_stuff_pvs(":", 0);
1340 c = ':';
1341 }
db81d362 1342 }
1343 }
1344
db81d362 1345 /* attributes */
ed95eeff 1346 Newx(attrs_sentinel, 1, OpGuard);
1347 op_guard_init(attrs_sentinel);
1348 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
c311cef3 1349
63915d26 1350 if (c == ':' || c == '{') /* '}' - hi, vim */ {
c311cef3 1351
1352 /* kludge default attributes in */
1353 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1354 lex_stuff_sv(spec->attrs, 0);
1355 c = ':';
1356 }
b72eb6ee 1357
db81d362 1358 if (c == ':') {
db81d362 1359 lex_read_unichar(0);
1360 lex_read_space(0);
db81d362 1361 c = lex_peek_unichar(0);
c311cef3 1362
1363 for (;;) {
1364 SV *attr;
1365
e4648f19 1366 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
c311cef3 1367 break;
db81d362 1368 }
c311cef3 1369
db81d362 1370 lex_read_space(0);
1371 c = lex_peek_unichar(0);
c311cef3 1372
1373 if (c != '(') {
1374 if (sv_eq_pvs(attr, "lvalue")) {
1375 builtin_attrs |= MY_ATTR_LVALUE;
1376 attr = NULL;
1377 } else if (sv_eq_pvs(attr, "method")) {
1378 builtin_attrs |= MY_ATTR_METHOD;
1379 attr = NULL;
1380 }
1381 } else {
31534187 1382 SV *sv;
1383 lex_read_unichar(0);
e4648f19 1384 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
c311cef3 1385 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1386 }
31534187 1387 sv_catpvs(attr, "(");
c311cef3 1388 sv_catsv(attr, sv);
31534187 1389 sv_catpvs(attr, ")");
c311cef3 1390
1391 lex_read_space(0);
1392 c = lex_peek_unichar(0);
1393 }
1394
1395 if (attr) {
ed95eeff 1396 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
c311cef3 1397 }
1398
1399 if (c == ':') {
1400 lex_read_unichar(0);
1401 lex_read_space(0);
1402 c = lex_peek_unichar(0);
1403 }
db81d362 1404 }
1405 }
1406 }
1407
1408 /* body */
63915d26 1409 if (c != '{') /* '}' - hi, vim */ {
85bc3fbd 1410 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
db81d362 1411 }
c311cef3 1412
63915d26 1413 /* surprise predeclaration! */
1414 if (saw_name) {
1415 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1416 starts parsing the body */
1417 const I32 sub_ix = start_subparse(FALSE, 0);
1418 SAVEFREESV(PL_compcv);
1419
1420 SvREFCNT_inc_simple_void(PL_compcv);
1421
1422 newATTRSUB(
1423 sub_ix,
fc634bba 1424 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1425 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
63915d26 1426 NULL,
1427 NULL
1428 );
1429 }
1430
c311cef3 1431 if (builtin_attrs & MY_ATTR_LVALUE) {
1432 CvLVALUE_on(PL_compcv);
db81d362 1433 }
c311cef3 1434 if (builtin_attrs & MY_ATTR_METHOD) {
1435 CvMETHOD_on(PL_compcv);
1436 }
1437 if (builtin_attrs & MY_ATTR_SPECIAL) {
1438 CvSPECIAL_on(PL_compcv);
db81d362 1439 }
1440
e158cf8f 1441 /* check number of arguments */
1e0f1595 1442 if (spec->flags & FLAG_CHECK_NARGS) {
e158cf8f 1443 int amin, amax;
abccbe86 1444
e158cf8f 1445 amin = args_min(aTHX_ param_spec, spec);
1446 if (amin > 0) {
51a483f8 1447 OP *chk, *cond, *err, *xcroak;
63915d26 1448
fc634bba 1449 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1450 err = newBINOP(
1451 OP_CONCAT, 0,
1452 err,
1453 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1454 );
1455 err = newBINOP(
1456 OP_CONCAT, 0,
1457 err,
1458 mkconstpvs(")")
1459 );
63915d26 1460
51a483f8 1461 xcroak = newCVREF(OPf_WANT_SCALAR,
1462 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1e0f1595 1463 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1464 op_append_elem(OP_LIST, err, xcroak));
63915d26 1465
1e0f1595 1466 cond = newBINOP(OP_LT, 0,
5f50e017 1467 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1468 mkconstiv(aTHX_ amin));
1e0f1595 1469 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1470
ed95eeff 1471 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1472 }
abccbe86 1473
e158cf8f 1474 amax = args_max(param_spec);
1475 if (amax >= 0) {
51a483f8 1476 OP *chk, *cond, *err, *xcroak;
63915d26 1477
fc634bba 1478 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1479 err = newBINOP(
1480 OP_CONCAT, 0,
1481 err,
1482 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1483 );
1484 err = newBINOP(
1485 OP_CONCAT, 0,
1486 err,
1487 mkconstpvs(")")
1488 );
63915d26 1489
51a483f8 1490 xcroak = newCVREF(
fc634bba 1491 OPf_WANT_SCALAR,
1492 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1493 );
1e0f1595 1494 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1495 op_append_elem(OP_LIST, err, xcroak));
63915d26 1496
fc634bba 1497 cond = newBINOP(
1498 OP_GT, 0,
1499 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1500 mkconstiv(aTHX_ amax)
1501 );
1e0f1595 1502 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1503
ed95eeff 1504 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1e0f1595 1505 }
e158cf8f 1506
1507 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
51a483f8 1508 OP *chk, *cond, *err, *xcroak;
e158cf8f 1509 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
63915d26 1510
fc634bba 1511 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
63915d26 1512
51a483f8 1513 xcroak = newCVREF(
fc634bba 1514 OPf_WANT_SCALAR,
1515 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1516 );
1e0f1595 1517 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1518 op_append_elem(OP_LIST, err, xcroak));
63915d26 1519
1e0f1595 1520 cond = newBINOP(OP_GT, 0,
5f50e017 1521 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1522 mkconstiv(aTHX_ fixed));
e158cf8f 1523 cond = newLOGOP(OP_AND, 0,
fc634bba 1524 cond,
1525 newBINOP(OP_MODULO, 0,
1526 fixed
1527 ? newBINOP(OP_SUBTRACT, 0,
1528 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1529 mkconstiv(aTHX_ fixed))
1530 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1531 mkconstiv(aTHX_ 2)));
1e0f1595 1532 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1533
ed95eeff 1534 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
c311cef3 1535 }
1e0f1595 1536 }
c311cef3 1537
e158cf8f 1538 if (!param_spec) {
1539 /* my $invocant = shift; */
1540 if (SvTRUE(spec->shift)) {
1541 OP *var;
abccbe86 1542
e158cf8f 1543 var = my_var(
1544 aTHX_
1545 OPf_MOD | (OPpLVAL_INTRO << 8),
1546 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1547 );
1548 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
c311cef3 1549
ed95eeff 1550 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
e158cf8f 1551 }
1552 } else {
1553 /* my $invocant = shift; */
1554 if (param_spec->invocant.name) {
1555 OP *var;
c311cef3 1556
e158cf8f 1557 var = my_var(
1558 aTHX_
1559 OPf_MOD | (OPpLVAL_INTRO << 8),
1560 param_spec->invocant.padoff
1561 );
1562 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1e0f1595 1563
ed95eeff 1564 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
51a483f8 1565
1566 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
ed95eeff 1567 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, &param_spec->invocant))));
51a483f8 1568 }
c311cef3 1569 }
1570
e158cf8f 1571 /* my (...) = @_; */
1572 {
1573 OP *lhs;
1574 size_t i, lim;
63915d26 1575
e158cf8f 1576 lhs = NULL;
63915d26 1577
e158cf8f 1578 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1579 OP *const var = my_var(
1580 aTHX_
1581 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1582 param_spec->positional_required.data[i].padoff
1583 );
1584 lhs = op_append_elem(OP_LIST, lhs, var);
1585 }
63915d26 1586
e158cf8f 1587 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1588 OP *const var = my_var(
1589 aTHX_
1590 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1591 param_spec->positional_optional.data[i].param.padoff
1592 );
1593 lhs = op_append_elem(OP_LIST, lhs, var);
1594 }
63915d26 1595
fc634bba 1596 {
1597 PADOFFSET padoff;
1598 I32 type;
1599 bool slurpy_hash;
1600
1601 /*
1602 * cases:
1603 * 1) no named params
1604 * 1.1) slurpy
1605 * => put it in
1606 * 1.2) no slurpy
1607 * => nop
1608 * 2) named params
1609 * 2.1) no slurpy
1610 * => synthetic %{rest}
1611 * 2.2) slurpy is a hash
1612 * => put it in
1613 * 2.3) slurpy is an array
1614 * => synthetic %{rest}
1615 * remember to declare array later
1616 */
1617
1618 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1619 if (!count_named_params(param_spec)) {
1620 if (param_spec->slurpy.name) {
1621 padoff = param_spec->slurpy.padoff;
1622 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1623 } else {
1624 padoff = NOT_IN_PAD;
1625 type = OP_PADSV;
1626 }
1627 } else if (slurpy_hash) {
1628 padoff = param_spec->slurpy.padoff;
1629 type = OP_PADHV;
e158cf8f 1630 } else {
fc634bba 1631 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1632 type = OP_PADHV;
1633 }
1634
1635 if (padoff != NOT_IN_PAD) {
e158cf8f 1636 OP *const var = my_var_g(
1637 aTHX_
fc634bba 1638 type,
e158cf8f 1639 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
fc634bba 1640 padoff
e158cf8f 1641 );
fc634bba 1642
e158cf8f 1643 lhs = op_append_elem(OP_LIST, lhs, var);
fc634bba 1644
1645 if (type == OP_PADHV) {
1646 param_spec->rest_hash = padoff;
1647 }
e158cf8f 1648 }
1649 }
63915d26 1650
e158cf8f 1651 if (lhs) {
1652 OP *rhs;
1653 lhs->op_flags |= OPf_PARENS;
1654 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1655
ed95eeff 1656 op_guard_update(prelude_sentinel, op_append_list(
1657 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1658 newSTATEOP(
1659 0, NULL,
1660 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1661 )
ed95eeff 1662 ));
e158cf8f 1663 }
1664 }
63915d26 1665
fc634bba 1666 /* default positional arguments */
e158cf8f 1667 {
1668 size_t i, lim, req;
1669 OP *nest;
63915d26 1670
e158cf8f 1671 nest = NULL;
63915d26 1672
e158cf8f 1673 req = param_spec->positional_required.used;
1674 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1675 ParamInit *cur = &param_spec->positional_optional.data[i];
1676 OP *var, *cond;
63915d26 1677
e158cf8f 1678 cond = newBINOP(
1679 OP_LT, 0,
1680 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1681 mkconstiv(aTHX_ req + i + 1)
e158cf8f 1682 );
63915d26 1683
e158cf8f 1684 var = my_var(aTHX_ 0, cur->param.padoff);
63915d26 1685
e158cf8f 1686 nest = op_append_list(
1687 OP_LINESEQ, nest,
ed95eeff 1688 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
e158cf8f 1689 );
e158cf8f 1690 nest = newCONDOP(
1691 0,
1692 cond,
1693 nest,
1694 NULL
1695 );
1696 }
1e0f1595 1697
ed95eeff 1698 op_guard_update(prelude_sentinel, op_append_list(
1699 OP_LINESEQ, prelude_sentinel->op,
e158cf8f 1700 nest
ed95eeff 1701 ));
c311cef3 1702 }
1703
e158cf8f 1704 /* named parameters */
1705 if (count_named_params(param_spec)) {
fc634bba 1706 size_t i, lim;
1707
1708 assert(param_spec->rest_hash != NOT_IN_PAD);
1709
1710 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1711 Param *cur = &param_spec->named_required.data[i];
1712 size_t n;
1713 char *p = SvPV(cur->name, n);
1714 OP *var, *cond;
1715
1716 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1717
1718 if (spec->flags & FLAG_CHECK_NARGS) {
51a483f8 1719 OP *xcroak, *msg;
fc634bba 1720
1721 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1722 var = newUNOP(OP_DELETE, 0, var);
1723
1724 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
51a483f8 1725 xcroak = newCVREF(
fc634bba 1726 OPf_WANT_SCALAR,
1727 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1728 );
51a483f8 1729 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1730
1731 cond = newUNOP(OP_EXISTS, 0, cond);
1732
51a483f8 1733 cond = newCONDOP(0, cond, var, xcroak);
fc634bba 1734 }
1735
1736 var = my_var(
1737 aTHX_
1738 OPf_MOD | (OPpLVAL_INTRO << 8),
1739 cur->padoff
1740 );
1741 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1742
ed95eeff 1743 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1744 }
1745
1746 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1747 ParamInit *cur = &param_spec->named_optional.data[i];
1748 size_t n;
1749 char *p = SvPV(cur->param.name, n);
1750 OP *var, *cond;
1751
1752 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1753 var = newUNOP(OP_DELETE, 0, var);
1754
1755 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1756 cond = newUNOP(OP_EXISTS, 0, cond);
1757
ed95eeff 1758 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
fc634bba 1759
1760 var = my_var(
1761 aTHX_
1762 OPf_MOD | (OPpLVAL_INTRO << 8),
1763 cur->param.padoff
1764 );
1765 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1766
ed95eeff 1767 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1768 }
1769
1770 if (!param_spec->slurpy.name) {
1771 if (spec->flags & FLAG_CHECK_NARGS) {
1772 /* croak if %{rest} */
51a483f8 1773 OP *xcroak, *cond, *keys, *msg;
fc634bba 1774
1775 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1776 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1777 {
1778 OP *first, *mid, *last;
1779
1780 last = keys;
1781
1782 mid = mkconstpvs(", ");
1783 mid->op_sibling = last;
1784
1785 first = newOP(OP_PUSHMARK, 0);
1786
1787 keys = newLISTOP(OP_JOIN, 0, first, mid);
1788 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1789 ((LISTOP *)keys)->op_last = last;
1790 }
1791
1792 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1793 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1794
51a483f8 1795 xcroak = newCVREF(
fc634bba 1796 OPf_WANT_SCALAR,
1797 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1798 );
51a483f8 1799 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1800
1801 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
51a483f8 1802 xcroak = newCONDOP(0, cond, xcroak, NULL);
fc634bba 1803
ed95eeff 1804 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
fc634bba 1805 } else {
1806 OP *clear;
1807
1808 clear = newASSIGNOP(
1809 OPf_STACKED,
1810 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1811 0,
1812 newNULLLIST()
1813 );
1814
ed95eeff 1815 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1816 }
1817 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1818 OP *var, *clear;
1819
1820 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1821
1822 var = my_var_g(
1823 aTHX_
1824 OP_PADAV,
1825 OPf_MOD | (OPpLVAL_INTRO << 8),
1826 param_spec->slurpy.padoff
1827 );
1828
1829 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1830
ed95eeff 1831 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
fc634bba 1832
1833 clear = newASSIGNOP(
1834 OPf_STACKED,
1835 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1836 0,
1837 newNULLLIST()
1838 );
1839
ed95eeff 1840 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
fc634bba 1841 }
1842 }
51a483f8 1843
1844 if (spec->flags & FLAG_CHECK_TARGS) {
1845 size_t i, lim, base;
1846
1847 base = 1;
1848 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1849 Param *cur = &param_spec->positional_required.data[i];
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->positional_optional.used; i < lim; i++) {
1858 Param *cur = &param_spec->positional_optional.data[i].param;
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_required.used; i < lim; i++) {
1867 Param *cur = &param_spec->named_required.data[i];
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 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1876 Param *cur = &param_spec->named_optional.data[i].param;
1877
1878 if (cur->type) {
ed95eeff 1879 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
51a483f8 1880 }
1881 }
1882 base += i;
1883
1884 if (param_spec->slurpy.type) {
1885 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
a8492ba4 1886 OP *check, *list, *loop;
51a483f8 1887
a8492ba4 1888 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
51a483f8 1889
1890 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1891 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1892 } else {
1893 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1894 list = newUNOP(OP_VALUES, 0, list);
1895 }
1896
a8492ba4 1897 loop = newFOROP(0, NULL, list, check, NULL);
51a483f8 1898
ed95eeff 1899 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
51a483f8 1900 }
1901 }
1e0f1595 1902 }
c311cef3 1903
1e0f1595 1904 /* finally let perl parse the actual subroutine body */
1905 body = parse_block(0);
c311cef3 1906
1e0f1595 1907 /* add '();' to make function return nothing by default */
1908 /* (otherwise the invisible parameter initialization can "leak" into
1909 the return value: fun ($x) {}->("asdf", 0) == 2) */
ed95eeff 1910 if (prelude_sentinel->op) {
1e0f1595 1911 body = newSTATEOP(0, NULL, body);
db81d362 1912 }
1913
ed95eeff 1914 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1e0f1595 1915
c311cef3 1916 /* it's go time. */
1917 {
53c979f0 1918 CV *cv;
ed95eeff 1919 OP *const attrs = op_guard_relinquish(attrs_sentinel);
53c979f0 1920
c311cef3 1921 SvREFCNT_inc_simple_void(PL_compcv);
1922
63915d26 1923 /* close outer block: '}' */
1924 S_block_end(aTHX_ save_ix, body);
1925
53c979f0 1926 cv = newATTRSUB(
c311cef3 1927 floor_ix,
53c979f0 1928 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
c311cef3 1929 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1930 attrs,
1931 body
1932 );
53c979f0 1933
2c1cb7bd 1934 if (cv) {
1935 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1936 }
53c979f0 1937
1938 if (saw_name) {
1939 *pop = newOP(OP_NULL, 0);
1940 return KEYWORD_PLUGIN_STMT;
1941 }
1942
1943 *pop = newUNOP(
1944 OP_REFGEN, 0,
1945 newSVOP(
1946 OP_ANONCODE, 0,
1947 (SV *)cv
1948 )
1949 );
1950 return KEYWORD_PLUGIN_EXPR;
db81d362 1951 }
db81d362 1952}
1953
8216fac4 1954static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1955 HV *hints;
1956 SV *sv, **psv;
1957 const char *p, *kw_active;
1958 STRLEN kw_active_len;
fd727b3e 1959 bool kw_is_utf8;
8216fac4 1960
1961 if (!(hints = GvHV(PL_hintgv))) {
1962 return FALSE;
1963 }
1964 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1965 return FALSE;
1966 }
1967 sv = *psv;
1968 kw_active = SvPV(sv, kw_active_len);
1969 if (kw_active_len <= kw_len) {
1970 return FALSE;
1971 }
fd727b3e 1972
1973 kw_is_utf8 = lex_bufutf8();
1974
8216fac4 1975 for (
1976 p = kw_active;
1977 (p = strchr(p, *kw_ptr)) &&
1978 p < kw_active + kw_active_len - kw_len;
1979 p++
1980 ) {
1981 if (
1982 (p == kw_active || p[-1] == ' ') &&
1983 p[kw_len] == ' ' &&
1984 memcmp(kw_ptr, p, kw_len) == 0
1985 ) {
1986 ENTER;
1987 SAVETMPS;
1988
1989 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1990
1991 spec->flags = 0;
7193dffb 1992 spec->reify_type = 0;
8216fac4 1993 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1994 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1995
1996#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1997 const char *fk_ptr_; \
1998 STRLEN fk_len_; \
fd727b3e 1999 I32 fk_xlen_; \
8216fac4 2000 SV *fk_sv_; \
2001 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
2002 sv_catpvn(fk_sv_, PTR, LEN); \
2003 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
fd727b3e 2004 fk_xlen_ = fk_len_; \
2005 if (kw_is_utf8) { \
2006 fk_xlen_ = -fk_xlen_; \
2007 } \
2008 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
8216fac4 2009 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2010 } \
2011} STMT_END
2012
2013 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2014 spec->flags = SvIV(*psv);
2015
7193dffb 2016 FETCH_HINTK_INTO(REIFY_, kw_ptr, kw_len, psv);
2017 spec->reify_type = SvIV(*psv);
2018
8216fac4 2019 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2020 SvSetSV(spec->shift, *psv);
2021
2022 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2023 SvSetSV(spec->attrs, *psv);
2024
2025#undef FETCH_HINTK_INTO
2026 return TRUE;
2027 }
2028 }
2029 return FALSE;
2030}
2031
db81d362 2032static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
8216fac4 2033 Sentinel sen = { NULL };
63915d26 2034 KWSpec spec;
db81d362 2035 int ret;
2036
8216fac4 2037 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2038 /* scope was entered, 'sen' and 'spec' are initialized */
e4648f19 2039 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
8216fac4 2040 FREETMPS;
2041 LEAVE;
db81d362 2042 } else {
8216fac4 2043 /* not one of our keywords, no allocation done */
7dd35535 2044 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
db81d362 2045 }
2046
db81d362 2047 return ret;
2048}
2049
2050WARNINGS_RESET
2051
53c979f0 2052MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
db81d362 2053PROTOTYPES: ENABLE
2054
53c979f0 2055UV
2056fp__cv_root(sv)
2057 SV * sv
2058 PREINIT:
79bce2d4 2059 CV *xcv;
53c979f0 2060 HV *hv;
2061 GV *gv;
2062 CODE:
79bce2d4 2063 xcv = sv_2cv(sv, &hv, &gv, 0);
2064 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
53c979f0 2065 OUTPUT:
2066 RETVAL
2067
db81d362 2068BOOT:
2069WARNINGS_ENABLE {
2070 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
426a4d69 2071 /**/
d8e5d540 2072 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2073 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
63915d26 2074 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
d8e5d540 2075 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2076 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
e158cf8f 2077 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
51a483f8 2078 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2079 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
db81d362 2080 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
d8e5d540 2081 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2082 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2083 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
7193dffb 2084 newCONSTSUB(stash, "HINTK_REIFY_", newSVpvs(HINTK_REIFY_));
426a4d69 2085 /**/
db81d362 2086 next_keyword_plugin = PL_keyword_plugin;
2087 PL_keyword_plugin = my_keyword_plugin;
2088} WARNINGS_RESET
Unnamed repository; edit this file to name it for gitweb.