projects / p5sagit/Function-Parameters.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | history | HEAD
import more Method::Signatures tests
[p5sagit/Function-Parameters.git] / Parameters.xs
CommitLineData
db81d362 1/*
2Copyright 2012 Lukas Mai.
3
4This program is free software; you can redistribute it and/or modify it
5under the terms of either: the GNU General Public License as published
6by the Free Software Foundation; or the Artistic License.
7
8See http://dev.perl.org/licenses/ for more information.
9 */
10
11#ifdef __GNUC__
12 #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ >= 5
13 #define PRAGMA_GCC_(X) _Pragma(#X)
14 #define PRAGMA_GCC(X) PRAGMA_GCC_(GCC X)
15 #endif
16#endif
17
18#ifndef PRAGMA_GCC
19 #define PRAGMA_GCC(X)
20#endif
21
22#ifdef DEVEL
23 #define WARNINGS_RESET PRAGMA_GCC(diagnostic pop)
24 #define WARNINGS_ENABLEW(X) PRAGMA_GCC(diagnostic warning #X)
25 #define WARNINGS_ENABLE \
26 WARNINGS_ENABLEW(-Wall) \
27 WARNINGS_ENABLEW(-Wextra) \
28 WARNINGS_ENABLEW(-Wundef) \
c3e72f35 29 /* WARNINGS_ENABLEW(-Wshadow) :-( */ \
db81d362 30 WARNINGS_ENABLEW(-Wbad-function-cast) \
31 WARNINGS_ENABLEW(-Wcast-align) \
32 WARNINGS_ENABLEW(-Wwrite-strings) \
33 /* WARNINGS_ENABLEW(-Wnested-externs) wtf? */ \
34 WARNINGS_ENABLEW(-Wstrict-prototypes) \
35 WARNINGS_ENABLEW(-Wmissing-prototypes) \
36 WARNINGS_ENABLEW(-Winline) \
37 WARNINGS_ENABLEW(-Wdisabled-optimization)
38
39#else
40 #define WARNINGS_RESET
1bc47886 41 #define WARNINGS_ENABLE
db81d362 42#endif
43
44
7dd35535 45#define PERL_NO_GET_CONTEXT
db81d362 46#include "EXTERN.h"
47#include "perl.h"
48#include "XSUB.h"
49
50#include <string.h>
51
63915d26 52
db81d362 53WARNINGS_ENABLE
54
db81d362 55
7dd35535 56#define HAVE_PERL_VERSION(R, V, S) \
57 (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
58
de013990 59#if HAVE_PERL_VERSION(5, 16, 0)
60 #define IF_HAVE_PERL_5_16(YES, NO) YES
61#else
62 #define IF_HAVE_PERL_5_16(YES, NO) NO
63#endif
64
e158cf8f 65#if 0
66 #if HAVE_PERL_VERSION(5, 17, 6)
67 #error "internal error: missing definition of KEY_my (your perl is too new)"
68 #elif HAVE_PERL_VERSION(5, 15, 8)
69 #define S_KEY_my 134
70 #elif HAVE_PERL_VERSION(5, 15, 6)
71 #define S_KEY_my 133
72 #elif HAVE_PERL_VERSION(5, 15, 5)
73 #define S_KEY_my 132
74 #elif HAVE_PERL_VERSION(5, 13, 0)
75 #define S_KEY_my 131
76 #else
77 #error "internal error: missing definition of KEY_my (your perl is too old)"
78 #endif
79#endif
80
63915d26 81
82#define MY_PKG "Function::Parameters"
83
84#define HINTK_KEYWORDS MY_PKG "/keywords"
85#define HINTK_FLAGS_ MY_PKG "/flags:"
86#define HINTK_SHIFT_ MY_PKG "/shift:"
87#define HINTK_ATTRS_ MY_PKG "/attrs:"
88
89#define DEFSTRUCT(T) typedef struct T T; struct T
90
0f875412 91#define UV_BITS (sizeof (UV) * CHAR_BIT)
63915d26 92
93enum {
94 FLAG_NAME_OK = 0x01,
95 FLAG_ANON_OK = 0x02,
96 FLAG_DEFAULT_ARGS = 0x04,
d8e5d540 97 FLAG_CHECK_NARGS = 0x08,
e158cf8f 98 FLAG_INVOCANT = 0x10,
51a483f8 99 FLAG_NAMED_PARAMS = 0x20,
100 FLAG_TYPES_OK = 0x40,
101 FLAG_CHECK_TARGS = 0x80
63915d26 102};
103
104DEFSTRUCT(KWSpec) {
105 unsigned flags;
b72eb6ee 106 SV *shift;
107 SV *attrs;
63915d26 108};
db81d362 109
110static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
111
e4648f19 112DEFSTRUCT(Resource) {
113 Resource *next;
114 void *data;
115 void (*destroy)(pTHX_ void *);
116};
117
118typedef Resource *Sentinel[1];
119
120static void sentinel_clear_void(pTHX_ void *p) {
121 Resource **pp = p;
122 while (*pp) {
123 Resource *cur = *pp;
a4c13d40 124 if (cur->destroy) {
125 cur->destroy(aTHX_ cur->data);
126 }
e4648f19 127 cur->data = (void *)"no";
128 cur->destroy = NULL;
129 *pp = cur->next;
130 Safefree(cur);
131 }
132}
133
a4c13d40 134static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
e4648f19 135 Resource *cur;
136
137 Newx(cur, 1, Resource);
138 cur->data = data;
139 cur->destroy = destroy;
140 cur->next = *sen;
141 *sen = cur;
a4c13d40 142
143 return cur;
144}
145
146static void sentinel_disarm(Resource *p) {
147 p->destroy = NULL;
e4648f19 148}
149
150static void my_sv_refcnt_dec_void(pTHX_ void *p) {
151 SV *sv = p;
152 SvREFCNT_dec(sv);
153}
154
155static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
156 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
157 return sv;
158}
159
e4648f19 160static int kw_flags(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
db81d362 161 HV *hints;
162 SV *sv, **psv;
163 const char *p, *kw_active;
164 STRLEN kw_active_len;
165
63915d26 166 spec->flags = 0;
e4648f19 167 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
168 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
db81d362 169
170 if (!(hints = GvHV(PL_hintgv))) {
171 return FALSE;
172 }
173 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
174 return FALSE;
175 }
176 sv = *psv;
177 kw_active = SvPV(sv, kw_active_len);
178 if (kw_active_len <= kw_len) {
179 return FALSE;
180 }
e88490f6 181 for (
182 p = kw_active;
183 (p = strchr(p, *kw_ptr)) &&
184 p < kw_active + kw_active_len - kw_len;
185 p++
186 ) {
db81d362 187 if (
188 (p == kw_active || p[-1] == ' ') &&
189 p[kw_len] == ' ' &&
190 memcmp(kw_ptr, p, kw_len) == 0
191 ) {
b72eb6ee 192
d970c3e7 193#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
b72eb6ee 194 const char *fk_ptr_; \
195 STRLEN fk_len_; \
196 SV *fk_sv_; \
e4648f19 197 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
b72eb6ee 198 sv_catpvn(fk_sv_, PTR, LEN); \
199 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
200 if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
201 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
202 } \
d970c3e7 203} STMT_END
b72eb6ee 204
63915d26 205 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
206 spec->flags = SvIV(*psv);
db81d362 207
b72eb6ee 208 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
209 SvSetSV(spec->shift, *psv);
db81d362 210
b72eb6ee 211 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
212 SvSetSV(spec->attrs, *psv);
213
214#undef FETCH_HINTK_INTO
db81d362 215 return TRUE;
216 }
217 }
218 return FALSE;
219}
220
221
51a483f8 222static void free_ptr_op_void(pTHX_ void *vp) {
c311cef3 223 OP **pp = vp;
224 op_free(*pp);
225 Safefree(pp);
226}
227
51a483f8 228static void free_op_void(pTHX_ void *vp) {
229 OP *p = vp;
230 op_free(p);
231}
232
59016bfb 233#define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
c311cef3 234
59016bfb 235static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
c311cef3 236 STRLEN sv_len;
237 const char *sv_p = SvPV(sv, sv_len);
59016bfb 238 return memcmp(sv_p, p, n) == 0;
c311cef3 239}
240
241
242#include "padop_on_crack.c.inc"
243
244
c311cef3 245enum {
246 MY_ATTR_LVALUE = 0x01,
247 MY_ATTR_METHOD = 0x02,
248 MY_ATTR_SPECIAL = 0x04
249};
250
31534187 251static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
252 char ds[UTF8_MAXBYTES + 1], *d;
67fc1ddb 253 d = (char *)uvchr_to_utf8((U8 *)ds, c);
31534187 254 if (d - ds > 1) {
255 sv_utf8_upgrade(sv);
256 }
257 sv_catpvn(sv, ds, d - ds);
258}
259
260static bool my_is_uni_xidfirst(pTHX_ UV c) {
261 U8 tmpbuf[UTF8_MAXBYTES + 1];
262 uvchr_to_utf8(tmpbuf, c);
263 return is_utf8_xidfirst(tmpbuf);
264}
265
266static bool my_is_uni_xidcont(pTHX_ UV c) {
267 U8 tmpbuf[UTF8_MAXBYTES + 1];
268 uvchr_to_utf8(tmpbuf, c);
269 return is_utf8_xidcont(tmpbuf);
270}
271
e4648f19 272static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
31534187 273 bool at_start, at_substart;
274 I32 c;
e4648f19 275 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 276 if (lex_bufutf8()) {
277 SvUTF8_on(sv);
278 }
279
280 at_start = at_substart = TRUE;
281 c = lex_peek_unichar(0);
282
283 while (c != -1) {
284 if (at_substart ? my_is_uni_xidfirst(aTHX_ c) : my_is_uni_xidcont(aTHX_ c)) {
285 lex_read_unichar(0);
286 my_sv_cat_c(aTHX_ sv, c);
287 at_substart = FALSE;
288 c = lex_peek_unichar(0);
289 } else if (allow_package && !at_substart && c == '\'') {
290 lex_read_unichar(0);
291 c = lex_peek_unichar(0);
292 if (!my_is_uni_xidfirst(aTHX_ c)) {
293 lex_stuff_pvs("'", 0);
294 break;
295 }
296 sv_catpvs(sv, "'");
297 at_substart = TRUE;
298 } else if (allow_package && (at_start || !at_substart) && c == ':') {
299 lex_read_unichar(0);
300 if (lex_peek_unichar(0) != ':') {
301 lex_stuff_pvs(":", 0);
302 break;
303 }
304 lex_read_unichar(0);
305 c = lex_peek_unichar(0);
306 if (!my_is_uni_xidfirst(aTHX_ c)) {
307 lex_stuff_pvs("::", 0);
308 break;
309 }
310 sv_catpvs(sv, "::");
311 at_substart = TRUE;
312 } else {
313 break;
314 }
315 at_start = FALSE;
316 }
317
318 return SvCUR(sv) ? sv : NULL;
319}
320
e4648f19 321static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
31534187 322 I32 c, nesting;
323 SV *sv;
324 line_t start;
325
326 start = CopLINE(PL_curcop);
327
e4648f19 328 sv = sentinel_mortalize(sen, newSVpvs(""));
31534187 329 if (lex_bufutf8()) {
330 SvUTF8_on(sv);
331 }
332
333 nesting = 0;
334 for (;;) {
335 c = lex_read_unichar(0);
336 if (c == EOF) {
337 CopLINE_set(PL_curcop, start);
338 return NULL;
339 }
340
341 if (c == '\\') {
342 c = lex_read_unichar(0);
343 if (c == EOF) {
344 CopLINE_set(PL_curcop, start);
345 return NULL;
346 }
347 if (keep_backslash || (c != '(' && c != ')')) {
348 sv_catpvs(sv, "\\");
349 }
350 } else if (c == '(') {
351 nesting++;
352 } else if (c == ')') {
353 if (!nesting) {
354 break;
355 }
356 nesting--;
357 }
358
359 my_sv_cat_c(aTHX_ sv, c);
360 }
361
362 return sv;
363}
364
e4648f19 365static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
31534187 366 char *start, *r, *w, *end;
367 STRLEN len;
368
369 /* strip spaces */
370 start = SvPV(proto, len);
371 end = start + len;
372
373 for (w = r = start; r < end; r++) {
374 if (!isSPACE(*r)) {
375 *w++ = *r;
376 }
377 }
378 *w = '\0';
379 SvCUR_set(proto, w - start);
380 end = w;
381 len = end - start;
382
383 if (!ckWARN(WARN_ILLEGALPROTO)) {
384 return;
385 }
386
387 /* check for bad characters */
388 if (strspn(start, "$@%*;[]&\\_+") != len) {
e4648f19 389 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
31534187 390 warner(
391 packWARN(WARN_ILLEGALPROTO),
392 "Illegal character in prototype for %"SVf" : %s",
393 SVfARG(declarator),
394 SvUTF8(proto)
395 ? sv_uni_display(
396 dsv,
397 proto,
398 len,
399 UNI_DISPLAY_ISPRINT
400 )
401 : pv_pretty(dsv, start, len, 60, NULL, NULL,
402 PERL_PV_ESCAPE_NONASCII
403 )
404 );
405 return;
406 }
407
408 for (r = start; r < end; r++) {
409 switch (*r) {
410 default:
411 warner(
412 packWARN(WARN_ILLEGALPROTO),
413 "Illegal character in prototype for %"SVf" : %s",
414 SVfARG(declarator), r
415 );
416 return;
417
418 case '_':
419 if (r[1] && !strchr(";@%", *r)) {
420 warner(
421 packWARN(WARN_ILLEGALPROTO),
422 "Illegal character after '_' in prototype for %"SVf" : %s",
423 SVfARG(declarator), r
424 );
425 return;
426 }
427 break;
428
429 case '@':
430 case '%':
431 if (r[1]) {
432 warner(
433 packWARN(WARN_ILLEGALPROTO),
434 "prototype after '%c' for %"SVf": %s",
435 *r, SVfARG(declarator), r + 1
436 );
437 return;
438 }
439 break;
440
441 case '\\':
442 r++;
443 if (strchr("$@%&*", *r)) {
444 break;
445 }
446 if (*r == '[') {
447 r++;
448 for (; r < end && *r != ']'; r++) {
449 if (!strchr("$@%&*", *r)) {
450 break;
451 }
452 }
453 if (*r == ']' && r[-1] != '[') {
454 break;
455 }
456 }
457 warner(
458 packWARN(WARN_ILLEGALPROTO),
459 "Illegal character after '\\' in prototype for %"SVf" : %s",
460 SVfARG(declarator), r
461 );
462 return;
463
464 case '$':
465 case '*':
466 case '&':
467 case ';':
468 case '+':
469 break;
470 }
471 }
472}
473
51a483f8 474static SV *parse_type(pTHX_ Sentinel, const SV *);
475
476static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
477 I32 c;
478 SV *t;
479
480 t = my_scan_word(aTHX_ sen, TRUE);
481 lex_read_space(0);
482
483 c = lex_peek_unichar(0);
484 if (c == '[') {
485 SV *u;
486
487 lex_read_unichar(0);
488 lex_read_space(0);
489 my_sv_cat_c(aTHX_ t, c);
490
491 u = parse_type(aTHX_ sen, declarator);
492 sv_catsv(t, u);
493
494 c = lex_peek_unichar(0);
495 if (c != ']') {
496 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
497 }
498 lex_read_unichar(0);
499 lex_read_space(0);
500
501 my_sv_cat_c(aTHX_ t, c);
502 }
503
504 return t;
505}
506
507static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
508 I32 c;
509 SV *t;
510
511 t = parse_type_paramd(aTHX_ sen, declarator);
512
513 c = lex_peek_unichar(0);
514 while (c == '|') {
515 SV *u;
516
517 lex_read_unichar(0);
518 lex_read_space(0);
519
520 my_sv_cat_c(aTHX_ t, c);
521 u = parse_type_paramd(aTHX_ sen, declarator);
522 sv_catsv(t, u);
523
524 c = lex_peek_unichar(0);
525 }
526
527 return t;
528}
529
530static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
531 SV *t;
532 int n;
533 dSP;
534
535 ENTER;
536 SAVETMPS;
537
538 PUSHMARK(SP);
539 EXTEND(SP, 1);
540 PUSHs(name);
541 PUTBACK;
542
700071de 543 n = call_pv("Moose::Util::TypeConstraints::find_or_create_isa_type_constraint", G_SCALAR);
51a483f8 544 SPAGAIN;
545
546 assert(n == 1);
a8492ba4 547 /* don't warn about n being unused if assert() is compiled out */
548 n = n;
549
51a483f8 550 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
551
552 PUTBACK;
553 FREETMPS;
554 LEAVE;
555
556 if (!SvTRUE(t)) {
557 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
558 }
559
560 return t;
561}
562
e158cf8f 563
564DEFSTRUCT(Param) {
565 SV *name;
566 PADOFFSET padoff;
51a483f8 567 SV *type;
e158cf8f 568};
569
570DEFSTRUCT(ParamInit) {
571 Param param;
572 OP *init;
573};
574
575#define VEC(B) B ## _Vec
576
577#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
578 B (*data); \
579 size_t used, size; \
580}
581
582DEFVECTOR(Param);
583DEFVECTOR(ParamInit);
584
585#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
586 p->used = 0; \
587 p->size = 23; \
588 Newx(p->data, p->size, B); \
589} static void N(VEC(B) *)
590
591DEFSTRUCT(ParamSpec) {
592 Param invocant;
593 VEC(Param) positional_required;
594 VEC(ParamInit) positional_optional;
595 VEC(Param) named_required;
596 VEC(ParamInit) named_optional;
597 Param slurpy;
fc634bba 598 PADOFFSET rest_hash;
e158cf8f 599};
600
601DEFVECTOR_INIT(pv_init, Param);
602DEFVECTOR_INIT(piv_init, ParamInit);
603
604static void p_init(Param *p) {
605 p->name = NULL;
606 p->padoff = NOT_IN_PAD;
51a483f8 607 p->type = NULL;
e158cf8f 608}
609
610static void ps_init(ParamSpec *ps) {
611 p_init(&ps->invocant);
612 pv_init(&ps->positional_required);
613 piv_init(&ps->positional_optional);
614 pv_init(&ps->named_required);
615 piv_init(&ps->named_optional);
616 p_init(&ps->slurpy);
fc634bba 617 ps->rest_hash = NOT_IN_PAD;
e158cf8f 618}
619
620#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
621 assert(p->used <= p->size); \
622 if (p->used == p->size) { \
623 const size_t n = p->size / 2 * 3 + 1; \
624 Renew(p->data, n, B); \
625 p->size = n; \
626 } \
627 return &p->data[p->used]; \
628} static B (*N(VEC(B) *))
629
630DEFVECTOR_EXTEND(pv_extend, Param);
631DEFVECTOR_EXTEND(piv_extend, ParamInit);
632
633#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
634 while (p->used) { \
635 p->used--; \
636 F(aTHX_ &p->data[p->used]); \
637 } \
638 Safefree(p->data); \
639 p->data = NULL; \
640 p->size = 0; \
641} static void N(pTHX_ VEC(B) *)
642
643static void p_clear(pTHX_ Param *p) {
644 p->name = NULL;
645 p->padoff = NOT_IN_PAD;
51a483f8 646 p->type = NULL;
e158cf8f 647}
648
649static void pi_clear(pTHX_ ParamInit *pi) {
650 p_clear(aTHX_ &pi->param);
651 if (pi->init) {
652 op_free(pi->init);
653 pi->init = NULL;
654 }
655}
656
657DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
658DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
659
660static void ps_clear(pTHX_ ParamSpec *ps) {
661 p_clear(aTHX_ &ps->invocant);
662
663 pv_clear(aTHX_ &ps->positional_required);
664 piv_clear(aTHX_ &ps->positional_optional);
665
666 pv_clear(aTHX_ &ps->named_required);
667 piv_clear(aTHX_ &ps->named_optional);
668
669 p_clear(aTHX_ &ps->slurpy);
670}
671
672static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
673 size_t i, lim;
674
675 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
676 return 1;
677 }
678
679 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
680 if (sv_eq(sv, ps->positional_required.data[i].name)) {
681 return 1;
682 }
683 }
684
685 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
686 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
687 return 1;
688 }
689 }
690
691 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
692 if (sv_eq(sv, ps->named_required.data[i].name)) {
693 return 1;
694 }
695 }
696
697 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
698 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
699 return 1;
700 }
701 }
702
703 return 0;
704}
705
706static void ps_free_void(pTHX_ void *p) {
707 ps_clear(aTHX_ p);
708 Safefree(p);
709}
710
711static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
712 int n = 0;
713 if (!ps) {
714 return SvTRUE(ks->shift) ? 1 : 0;
715 }
716 if (ps->invocant.name) {
717 n++;
718 }
719 n += ps->positional_required.used;
720 n += ps->named_required.used * 2;
721 return n;
722}
723
724static int args_max(const ParamSpec *ps) {
725 int n = 0;
726 if (!ps) {
727 return -1;
728 }
729 if (ps->invocant.name) {
730 n++;
731 }
732 n += ps->positional_required.used;
733 n += ps->positional_optional.used;
734 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
735 n = -1;
736 }
737 return n;
738}
739
740static size_t count_positional_params(const ParamSpec *ps) {
741 return ps->positional_required.used + ps->positional_optional.used;
742}
743
744static size_t count_named_params(const ParamSpec *ps) {
745 return ps->named_required.used + ps->named_optional.used;
746}
747
51a483f8 748static void my_require(pTHX_ const char *file) {
749 require_pv(file);
750 if (SvTRUE(ERRSV)) {
751 croak_sv(ERRSV);
752 }
753}
754
755static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
756 SV *sv;
757 CV *cv;
758 dSP;
759
760 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
761
762 ENTER;
763 SAVETMPS;
764
765 PUSHMARK(SP);
766 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
767 SPAGAIN;
768 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
769
770 PUTBACK;
771 FREETMPS;
772 LEAVE;
773
774 return sv;
775}
776
e158cf8f 777enum {
778 PARAM_INVOCANT = 0x01,
779 PARAM_NAMED = 0x02
780};
781
782/* *pinit must be NULL on entry.
783 * caller must free *pinit on error.
784 */
785static PADOFFSET parse_param(
786 pTHX_
e4648f19 787 Sentinel sen,
e158cf8f 788 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
51a483f8 789 int *pflags, SV **pname, OP **pinit, SV **ptype
e158cf8f 790) {
791 I32 c;
792 char sigil;
a4c13d40 793 SV *name;
e158cf8f 794
795 assert(!*pinit);
796 *pflags = 0;
51a483f8 797 *ptype = NULL;
e158cf8f 798
799 c = lex_peek_unichar(0);
800
51a483f8 801 if (spec->flags & FLAG_TYPES_OK) {
802 if (c == '(') {
803 I32 floor;
804 OP *expr;
a4c13d40 805 Resource *expr_sentinel;
51a483f8 806
807 lex_read_unichar(0);
808
a4c13d40 809 floor = start_subparse(FALSE, 0);
810 SAVEFREESV(PL_compcv);
811 CvSPECIAL_on(PL_compcv);
51a483f8 812
813 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
814 croak("In %"SVf": invalid type expression", SVfARG(declarator));
815 }
a4c13d40 816 expr_sentinel = sentinel_register(sen, expr, free_op_void);
51a483f8 817
818 lex_read_space(0);
819 c = lex_peek_unichar(0);
820 if (c != ')') {
821 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
822 }
823 lex_read_unichar(0);
824 lex_read_space(0);
825
a4c13d40 826 SvREFCNT_inc_simple_void(PL_compcv);
827 sentinel_disarm(expr_sentinel);
51a483f8 828 *ptype = my_eval(aTHX_ sen, floor, expr);
a4c13d40 829 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 830 if (!sv_isobject(*ptype)) {
831 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
832 }
833
834 c = lex_peek_unichar(0);
835 } else if (my_is_uni_xidfirst(aTHX_ c)) {
a4c13d40 836 *ptype = parse_type(aTHX_ sen, declarator);
51a483f8 837 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
a4c13d40 838 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
51a483f8 839
840 c = lex_peek_unichar(0);
841 }
842 }
843
e158cf8f 844 if (c == ':') {
845 lex_read_unichar(0);
846 lex_read_space(0);
847
848 *pflags |= PARAM_NAMED;
849
850 c = lex_peek_unichar(0);
851 }
852
853 if (c == -1) {
854 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
855 }
51a483f8 856
e158cf8f 857 if (!(c == '$' || c == '@' || c == '%')) {
858 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
859 }
860
861 sigil = c;
862
863 lex_read_unichar(0);
864 lex_read_space(0);
865
e4648f19 866 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
e158cf8f 867 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
868 }
869 sv_insert(name, 0, 0, &sigil, 1);
870 *pname = name;
871
872 lex_read_space(0);
873 c = lex_peek_unichar(0);
874
875 if (c == '=') {
876 lex_read_unichar(0);
877 lex_read_space(0);
878
879
880 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
881 param_spec->invocant.name = spec->shift;
882 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
883 }
884
885 *pinit = parse_termexpr(0);
886
887 lex_read_space(0);
888 c = lex_peek_unichar(0);
889 }
890
891 if (c == ':') {
892 *pflags |= PARAM_INVOCANT;
893 lex_read_unichar(0);
894 lex_read_space(0);
895 } else if (c == ',') {
896 lex_read_unichar(0);
897 lex_read_space(0);
898 } else if (c != ')') {
899 if (c == -1) {
900 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
901 }
902 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
903 }
904
905 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
906}
907
908static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
909 OP *var = newOP(type, flags);
910 var->op_targ = padoff;
911 return var;
912}
913
914static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
915 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
916}
917
fc634bba 918static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
919 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
920 return newBINOP(OP_HELEM, 0, hv, k);
921}
922
923static OP *mkconstsv(pTHX_ SV *sv) {
924 return newSVOP(OP_CONST, 0, sv);
925}
926
927static OP *mkconstiv(pTHX_ IV i) {
928 return mkconstsv(aTHX_ newSViv(i));
929}
930
931static OP *mkconstpv(pTHX_ const char *p, size_t n) {
932 return mkconstsv(aTHX_ newSVpv(p, n));
933}
934
935#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
936
51a483f8 937static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
938 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
a8492ba4 939 OP *chk, *err, *msg, *xcroak;
51a483f8 940
941 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
942 {
943 OP *args = NULL;
944
945 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
946 args = op_append_elem(
947 OP_LIST, args,
948 padoff == NOT_IN_PAD
949 ? S_newDEFSVOP(aTHX)
950 : my_var(aTHX_ 0, padoff)
951 );
952 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
953
954 msg = args;
955 msg->op_type = OP_ENTERSUB;
956 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
957 msg->op_flags |= OPf_STACKED;
958 }
959
960 msg = newBINOP(OP_CONCAT, 0, err, msg);
961
962 xcroak = newCVREF(
963 OPf_WANT_SCALAR,
964 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
965 );
966 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
967
968 {
969 OP *args = NULL;
970
971 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
972 args = op_append_elem(
973 OP_LIST, args,
974 padoff == NOT_IN_PAD
975 ? S_newDEFSVOP(aTHX)
976 : my_var(aTHX_ 0, padoff)
977 );
978 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
979
980 chk = args;
981 chk->op_type = OP_ENTERSUB;
982 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
983 chk->op_flags |= OPf_STACKED;
984 }
985
986 chk = newLOGOP(OP_OR, 0, chk, xcroak);
987 return chk;
988}
989
990static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
991 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
992}
993
53c979f0 994static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
995 dSP;
996
997 ENTER;
998 SAVETMPS;
999
1000 PUSHMARK(SP);
51a483f8 1001 EXTEND(SP, 10);
53c979f0 1002
1003 /* 0 */ {
1004 mPUSHu(key);
1005 }
1006 /* 1 */ {
1007 size_t n;
1008 char *p = SvPV(declarator, n);
1009 char *q = memchr(p, ' ', n);
79bce2d4 1010 mPUSHp(p, q ? (size_t)(q - p) : n);
53c979f0 1011 }
1012 if (!ps) {
1013 if (SvTRUE(kws->shift)) {
1014 PUSHs(kws->shift);
1015 } else {
1016 PUSHmortal;
1017 }
51a483f8 1018 PUSHmortal;
53c979f0 1019 mPUSHs(newRV_noinc((SV *)newAV()));
1020 mPUSHs(newRV_noinc((SV *)newAV()));
1021 mPUSHs(newRV_noinc((SV *)newAV()));
1022 mPUSHs(newRV_noinc((SV *)newAV()));
1023 mPUSHp("@_", 2);
51a483f8 1024 PUSHmortal;
53c979f0 1025 } else {
51a483f8 1026 /* 2, 3 */ {
53c979f0 1027 if (ps->invocant.name) {
1028 PUSHs(ps->invocant.name);
51a483f8 1029 if (ps->invocant.type) {
1030 PUSHs(ps->invocant.type);
1031 } else {
1032 PUSHmortal;
1033 }
53c979f0 1034 } else {
1035 PUSHmortal;
51a483f8 1036 PUSHmortal;
53c979f0 1037 }
1038 }
51a483f8 1039 /* 4 */ {
53c979f0 1040 size_t i, lim;
1041 AV *av;
1042
1043 lim = ps->positional_required.used;
1044
1045 av = newAV();
1046 if (lim) {
51a483f8 1047 av_extend(av, (lim - 1) * 2);
53c979f0 1048 for (i = 0; i < lim; i++) {
51a483f8 1049 Param *cur = &ps->positional_required.data[i];
1050 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1051 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1052 }
1053 }
1054
1055 mPUSHs(newRV_noinc((SV *)av));
1056 }
51a483f8 1057 /* 5 */ {
53c979f0 1058 size_t i, lim;
1059 AV *av;
1060
1061 lim = ps->positional_optional.used;
1062
1063 av = newAV();
1064 if (lim) {
51a483f8 1065 av_extend(av, (lim - 1) * 2);
53c979f0 1066 for (i = 0; i < lim; i++) {
51a483f8 1067 Param *cur = &ps->positional_optional.data[i].param;
1068 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1069 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1070 }
1071 }
1072
1073 mPUSHs(newRV_noinc((SV *)av));
1074 }
51a483f8 1075 /* 6 */ {
53c979f0 1076 size_t i, lim;
1077 AV *av;
1078
1079 lim = ps->named_required.used;
1080
1081 av = newAV();
1082 if (lim) {
51a483f8 1083 av_extend(av, (lim - 1) * 2);
53c979f0 1084 for (i = 0; i < lim; i++) {
51a483f8 1085 Param *cur = &ps->named_required.data[i];
1086 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1087 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1088 }
1089 }
1090
1091 mPUSHs(newRV_noinc((SV *)av));
1092 }
51a483f8 1093 /* 7 */ {
53c979f0 1094 size_t i, lim;
1095 AV *av;
1096
1097 lim = ps->named_optional.used;
1098
1099 av = newAV();
1100 if (lim) {
51a483f8 1101 av_extend(av, (lim - 1) * 2);
53c979f0 1102 for (i = 0; i < lim; i++) {
51a483f8 1103 Param *cur = &ps->named_optional.data[i].param;
1104 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1105 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
53c979f0 1106 }
1107 }
1108
1109 mPUSHs(newRV_noinc((SV *)av));
1110 }
51a483f8 1111 /* 8, 9 */ {
53c979f0 1112 if (ps->slurpy.name) {
1113 PUSHs(ps->slurpy.name);
51a483f8 1114 if (ps->slurpy.type) {
1115 PUSHs(ps->slurpy.type);
1116 } else {
1117 PUSHmortal;
1118 }
53c979f0 1119 } else {
1120 PUSHmortal;
51a483f8 1121 PUSHmortal;
53c979f0 1122 }
1123 }
1124 }
1125 PUTBACK;
1126
1127 call_pv(MY_PKG "::_register_info", G_VOID);
1128
1129 FREETMPS;
1130 LEAVE;
1131}
1132
e4648f19 1133static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
e158cf8f 1134 ParamSpec *param_spec;
c311cef3 1135 SV *declarator;
1136 I32 floor_ix;
63915d26 1137 int save_ix;
c311cef3 1138 SV *saw_name;
1e0f1595 1139 OP **prelude_sentinel;
c311cef3 1140 SV *proto;
1141 OP **attrs_sentinel, *body;
1142 unsigned builtin_attrs;
db81d362 1143 I32 c;
1144
e4648f19 1145 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
db81d362 1146
db81d362 1147 lex_read_space(0);
1148
c311cef3 1149 builtin_attrs = 0;
1150
db81d362 1151 /* function name */
c311cef3 1152 saw_name = NULL;
e4648f19 1153 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
c311cef3 1154
1155 if (PL_parser->expect != XSTATE) {
1156 /* bail out early so we don't predeclare $saw_name */
1157 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1158 }
1159
db81d362 1160 sv_catpvs(declarator, " ");
c311cef3 1161 sv_catsv(declarator, saw_name);
1162
1163 if (
1164 sv_eq_pvs(saw_name, "BEGIN") ||
1165 sv_eq_pvs(saw_name, "END") ||
1166 sv_eq_pvs(saw_name, "INIT") ||
1167 sv_eq_pvs(saw_name, "CHECK") ||
1168 sv_eq_pvs(saw_name, "UNITCHECK")
1169 ) {
1170 builtin_attrs |= MY_ATTR_SPECIAL;
1171 }
1172
db81d362 1173 lex_read_space(0);
63915d26 1174 } else if (!(spec->flags & FLAG_ANON_OK)) {
31534187 1175 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
db81d362 1176 } else {
1177 sv_catpvs(declarator, " (anon)");
1178 }
1179
63915d26 1180 /* we're a subroutine declaration */
c311cef3 1181 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1182 SAVEFREESV(PL_compcv);
1183
63915d26 1184 /* create outer block: '{' */
1185 save_ix = S_block_start(aTHX_ TRUE);
1186
1e0f1595 1187 /* initialize synthetic optree */
1188 Newx(prelude_sentinel, 1, OP *);
1189 *prelude_sentinel = NULL;
51a483f8 1190 sentinel_register(sen, prelude_sentinel, free_ptr_op_void);
1e0f1595 1191
db81d362 1192 /* parameters */
e158cf8f 1193 param_spec = NULL;
63915d26 1194
db81d362 1195 c = lex_peek_unichar(0);
1196 if (c == '(') {
e158cf8f 1197 OP **init_sentinel;
1198
1199 Newx(init_sentinel, 1, OP *);
1200 *init_sentinel = NULL;
51a483f8 1201 sentinel_register(sen, init_sentinel, free_ptr_op_void);
e158cf8f 1202
1203 Newx(param_spec, 1, ParamSpec);
1204 ps_init(param_spec);
e4648f19 1205 sentinel_register(sen, param_spec, ps_free_void);
db81d362 1206
1207 lex_read_unichar(0);
1208 lex_read_space(0);
1209
e158cf8f 1210 while ((c = lex_peek_unichar(0)) != ')') {
1211 int flags;
51a483f8 1212 SV *name, *type;
e158cf8f 1213 char sigil;
1214 PADOFFSET padoff;
c311cef3 1215
51a483f8 1216 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
c311cef3 1217
e158cf8f 1218 S_intro_my(aTHX);
63915d26 1219
e158cf8f 1220 sigil = SvPV_nolen(name)[0];
db81d362 1221
e158cf8f 1222 /* internal consistency */
1223 if (flags & PARAM_NAMED) {
1224 if (flags & PARAM_INVOCANT) {
1225 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
db81d362 1226 }
e158cf8f 1227 if (sigil != '$') {
1228 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
db81d362 1229 }
e158cf8f 1230 } else if (flags & PARAM_INVOCANT) {
1231 if (*init_sentinel) {
1232 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
db81d362 1233 }
e158cf8f 1234 if (sigil != '$') {
1235 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1236 }
1237 } else if (sigil != '$' && *init_sentinel) {
1238 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1239 }
db81d362 1240
e158cf8f 1241 /* external constraints */
1242 if (param_spec->slurpy.name) {
1243 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1244 }
1245 if (sigil != '$') {
1246 assert(!*init_sentinel);
1247 param_spec->slurpy.name = name;
1248 param_spec->slurpy.padoff = padoff;
51a483f8 1249 param_spec->slurpy.type = type;
e158cf8f 1250 continue;
1251 }
d8e5d540 1252
e158cf8f 1253 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1254 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));
1255 }
d8e5d540 1256
e158cf8f 1257 if (flags & PARAM_INVOCANT) {
1258 if (param_spec->invocant.name) {
1259 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1260 }
1261 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1262 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
63915d26 1263 }
e158cf8f 1264 if (!(spec->flags & FLAG_INVOCANT)) {
1265 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1266 }
1267 param_spec->invocant.name = name;
1268 param_spec->invocant.padoff = padoff;
51a483f8 1269 param_spec->invocant.type = type;
e158cf8f 1270 continue;
1271 }
63915d26 1272
e158cf8f 1273 if (*init_sentinel && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1274 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1275 }
1e0f1595 1276
e158cf8f 1277 if (ps_contains(aTHX_ param_spec, name)) {
1278 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1279 }
1e0f1595 1280
e158cf8f 1281 if (flags & PARAM_NAMED) {
1282 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1283 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1e0f1595 1284 }
1285
e158cf8f 1286 if (*init_sentinel) {
1287 ParamInit *pi = piv_extend(&param_spec->named_optional);
1288 pi->param.name = name;
1289 pi->param.padoff = padoff;
51a483f8 1290 pi->param.type = type;
e158cf8f 1291 pi->init = *init_sentinel;
1292 *init_sentinel = NULL;
1293 param_spec->named_optional.used++;
1294 } else {
67fc1ddb 1295 Param *p;
1296
e158cf8f 1297 if (param_spec->positional_optional.used) {
1298 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));
1299 }
d8e5d540 1300
67fc1ddb 1301 p = pv_extend(&param_spec->named_required);
e158cf8f 1302 p->name = name;
1303 p->padoff = padoff;
51a483f8 1304 p->type = type;
e158cf8f 1305 param_spec->named_required.used++;
1306 }
1307 } else {
1308 if (*init_sentinel || param_spec->positional_optional.used) {
1309 ParamInit *pi = piv_extend(&param_spec->positional_optional);
1310 pi->param.name = name;
1311 pi->param.padoff = padoff;
51a483f8 1312 pi->param.type = type;
e158cf8f 1313 pi->init = *init_sentinel;
1314 *init_sentinel = NULL;
1315 param_spec->positional_optional.used++;
1316 } else {
1317 Param *p = pv_extend(&param_spec->positional_required);
1318 p->name = name;
1319 p->padoff = padoff;
51a483f8 1320 p->type = type;
e158cf8f 1321 param_spec->positional_required.used++;
db81d362 1322 }
1323 }
1324
e158cf8f 1325 }
1326 lex_read_unichar(0);
1327 lex_read_space(0);
1328 *init_sentinel = NULL;
db81d362 1329
e158cf8f 1330 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1331 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1332 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
db81d362 1333 }
e158cf8f 1334
1335 param_spec->invocant.name = spec->shift;
1336 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
db81d362 1337 }
1338 }
1339
1340 /* prototype */
c311cef3 1341 proto = NULL;
db81d362 1342 c = lex_peek_unichar(0);
1343 if (c == ':') {
1344 lex_read_unichar(0);
1345 lex_read_space(0);
1346
1347 c = lex_peek_unichar(0);
1348 if (c != '(') {
c311cef3 1349 lex_stuff_pvs(":", 0);
1350 c = ':';
db81d362 1351 } else {
31534187 1352 lex_read_unichar(0);
e4648f19 1353 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
f34187b8 1354 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
db81d362 1355 }
e4648f19 1356 my_check_prototype(aTHX_ sen, declarator, proto);
db81d362 1357 lex_read_space(0);
c311cef3 1358 c = lex_peek_unichar(0);
514bcaa6 1359 if (!(c == ':' || c == '{')) {
1360 lex_stuff_pvs(":", 0);
1361 c = ':';
1362 }
db81d362 1363 }
1364 }
1365
db81d362 1366 /* attributes */
c311cef3 1367 Newx(attrs_sentinel, 1, OP *);
1368 *attrs_sentinel = NULL;
51a483f8 1369 sentinel_register(sen, attrs_sentinel, free_ptr_op_void);
c311cef3 1370
63915d26 1371 if (c == ':' || c == '{') /* '}' - hi, vim */ {
c311cef3 1372
1373 /* kludge default attributes in */
1374 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1375 lex_stuff_sv(spec->attrs, 0);
1376 c = ':';
1377 }
b72eb6ee 1378
db81d362 1379 if (c == ':') {
db81d362 1380 lex_read_unichar(0);
1381 lex_read_space(0);
db81d362 1382 c = lex_peek_unichar(0);
c311cef3 1383
1384 for (;;) {
1385 SV *attr;
1386
e4648f19 1387 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
c311cef3 1388 break;
db81d362 1389 }
c311cef3 1390
db81d362 1391 lex_read_space(0);
1392 c = lex_peek_unichar(0);
c311cef3 1393
1394 if (c != '(') {
1395 if (sv_eq_pvs(attr, "lvalue")) {
1396 builtin_attrs |= MY_ATTR_LVALUE;
1397 attr = NULL;
1398 } else if (sv_eq_pvs(attr, "method")) {
1399 builtin_attrs |= MY_ATTR_METHOD;
1400 attr = NULL;
1401 }
1402 } else {
31534187 1403 SV *sv;
1404 lex_read_unichar(0);
e4648f19 1405 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
c311cef3 1406 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1407 }
31534187 1408 sv_catpvs(attr, "(");
c311cef3 1409 sv_catsv(attr, sv);
31534187 1410 sv_catpvs(attr, ")");
c311cef3 1411
1412 lex_read_space(0);
1413 c = lex_peek_unichar(0);
1414 }
1415
1416 if (attr) {
fc634bba 1417 *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr)));
c311cef3 1418 }
1419
1420 if (c == ':') {
1421 lex_read_unichar(0);
1422 lex_read_space(0);
1423 c = lex_peek_unichar(0);
1424 }
db81d362 1425 }
1426 }
1427 }
1428
1429 /* body */
63915d26 1430 if (c != '{') /* '}' - hi, vim */ {
85bc3fbd 1431 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
db81d362 1432 }
c311cef3 1433
63915d26 1434 /* surprise predeclaration! */
1435 if (saw_name) {
1436 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1437 starts parsing the body */
1438 const I32 sub_ix = start_subparse(FALSE, 0);
1439 SAVEFREESV(PL_compcv);
1440
1441 SvREFCNT_inc_simple_void(PL_compcv);
1442
1443 newATTRSUB(
1444 sub_ix,
fc634bba 1445 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1446 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
63915d26 1447 NULL,
1448 NULL
1449 );
1450 }
1451
c311cef3 1452 if (builtin_attrs & MY_ATTR_LVALUE) {
1453 CvLVALUE_on(PL_compcv);
db81d362 1454 }
c311cef3 1455 if (builtin_attrs & MY_ATTR_METHOD) {
1456 CvMETHOD_on(PL_compcv);
1457 }
1458 if (builtin_attrs & MY_ATTR_SPECIAL) {
1459 CvSPECIAL_on(PL_compcv);
db81d362 1460 }
1461
e158cf8f 1462 /* check number of arguments */
1e0f1595 1463 if (spec->flags & FLAG_CHECK_NARGS) {
e158cf8f 1464 int amin, amax;
abccbe86 1465
e158cf8f 1466 amin = args_min(aTHX_ param_spec, spec);
1467 if (amin > 0) {
51a483f8 1468 OP *chk, *cond, *err, *xcroak;
63915d26 1469
fc634bba 1470 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1471 err = newBINOP(
1472 OP_CONCAT, 0,
1473 err,
1474 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1475 );
1476 err = newBINOP(
1477 OP_CONCAT, 0,
1478 err,
1479 mkconstpvs(")")
1480 );
63915d26 1481
51a483f8 1482 xcroak = newCVREF(OPf_WANT_SCALAR,
1483 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1e0f1595 1484 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1485 op_append_elem(OP_LIST, err, xcroak));
63915d26 1486
1e0f1595 1487 cond = newBINOP(OP_LT, 0,
5f50e017 1488 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1489 mkconstiv(aTHX_ amin));
1e0f1595 1490 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1491
1e0f1595 1492 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1493 }
abccbe86 1494
e158cf8f 1495 amax = args_max(param_spec);
1496 if (amax >= 0) {
51a483f8 1497 OP *chk, *cond, *err, *xcroak;
63915d26 1498
fc634bba 1499 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1500 err = newBINOP(
1501 OP_CONCAT, 0,
1502 err,
1503 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1504 );
1505 err = newBINOP(
1506 OP_CONCAT, 0,
1507 err,
1508 mkconstpvs(")")
1509 );
63915d26 1510
51a483f8 1511 xcroak = newCVREF(
fc634bba 1512 OPf_WANT_SCALAR,
1513 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1514 );
1e0f1595 1515 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1516 op_append_elem(OP_LIST, err, xcroak));
63915d26 1517
fc634bba 1518 cond = newBINOP(
1519 OP_GT, 0,
1520 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1521 mkconstiv(aTHX_ amax)
1522 );
1e0f1595 1523 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1524
1e0f1595 1525 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1526 }
e158cf8f 1527
1528 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
51a483f8 1529 OP *chk, *cond, *err, *xcroak;
e158cf8f 1530 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
63915d26 1531
fc634bba 1532 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
63915d26 1533
51a483f8 1534 xcroak = newCVREF(
fc634bba 1535 OPf_WANT_SCALAR,
1536 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1537 );
1e0f1595 1538 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
51a483f8 1539 op_append_elem(OP_LIST, err, xcroak));
63915d26 1540
1e0f1595 1541 cond = newBINOP(OP_GT, 0,
5f50e017 1542 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1543 mkconstiv(aTHX_ fixed));
e158cf8f 1544 cond = newLOGOP(OP_AND, 0,
fc634bba 1545 cond,
1546 newBINOP(OP_MODULO, 0,
1547 fixed
1548 ? newBINOP(OP_SUBTRACT, 0,
1549 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1550 mkconstiv(aTHX_ fixed))
1551 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1552 mkconstiv(aTHX_ 2)));
1e0f1595 1553 chk = newLOGOP(OP_AND, 0, cond, err);
63915d26 1554
1e0f1595 1555 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
c311cef3 1556 }
1e0f1595 1557 }
c311cef3 1558
e158cf8f 1559 if (!param_spec) {
1560 /* my $invocant = shift; */
1561 if (SvTRUE(spec->shift)) {
1562 OP *var;
abccbe86 1563
e158cf8f 1564 var = my_var(
1565 aTHX_
1566 OPf_MOD | (OPpLVAL_INTRO << 8),
1567 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1568 );
1569 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
c311cef3 1570
e158cf8f 1571 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1572 }
1573 } else {
1574 /* my $invocant = shift; */
1575 if (param_spec->invocant.name) {
1576 OP *var;
c311cef3 1577
e158cf8f 1578 var = my_var(
1579 aTHX_
1580 OPf_MOD | (OPpLVAL_INTRO << 8),
1581 param_spec->invocant.padoff
1582 );
1583 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1e0f1595 1584
e158cf8f 1585 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
51a483f8 1586
1587 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1588 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, &param_spec->invocant)));
1589 }
c311cef3 1590 }
1591
e158cf8f 1592 /* my (...) = @_; */
1593 {
1594 OP *lhs;
1595 size_t i, lim;
63915d26 1596
e158cf8f 1597 lhs = NULL;
63915d26 1598
e158cf8f 1599 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1600 OP *const var = my_var(
1601 aTHX_
1602 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1603 param_spec->positional_required.data[i].padoff
1604 );
1605 lhs = op_append_elem(OP_LIST, lhs, var);
1606 }
63915d26 1607
e158cf8f 1608 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1609 OP *const var = my_var(
1610 aTHX_
1611 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1612 param_spec->positional_optional.data[i].param.padoff
1613 );
1614 lhs = op_append_elem(OP_LIST, lhs, var);
1615 }
63915d26 1616
fc634bba 1617 {
1618 PADOFFSET padoff;
1619 I32 type;
1620 bool slurpy_hash;
1621
1622 /*
1623 * cases:
1624 * 1) no named params
1625 * 1.1) slurpy
1626 * => put it in
1627 * 1.2) no slurpy
1628 * => nop
1629 * 2) named params
1630 * 2.1) no slurpy
1631 * => synthetic %{rest}
1632 * 2.2) slurpy is a hash
1633 * => put it in
1634 * 2.3) slurpy is an array
1635 * => synthetic %{rest}
1636 * remember to declare array later
1637 */
1638
1639 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1640 if (!count_named_params(param_spec)) {
1641 if (param_spec->slurpy.name) {
1642 padoff = param_spec->slurpy.padoff;
1643 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1644 } else {
1645 padoff = NOT_IN_PAD;
1646 type = OP_PADSV;
1647 }
1648 } else if (slurpy_hash) {
1649 padoff = param_spec->slurpy.padoff;
1650 type = OP_PADHV;
e158cf8f 1651 } else {
fc634bba 1652 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1653 type = OP_PADHV;
1654 }
1655
1656 if (padoff != NOT_IN_PAD) {
e158cf8f 1657 OP *const var = my_var_g(
1658 aTHX_
fc634bba 1659 type,
e158cf8f 1660 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
fc634bba 1661 padoff
e158cf8f 1662 );
fc634bba 1663
e158cf8f 1664 lhs = op_append_elem(OP_LIST, lhs, var);
fc634bba 1665
1666 if (type == OP_PADHV) {
1667 param_spec->rest_hash = padoff;
1668 }
e158cf8f 1669 }
1670 }
63915d26 1671
e158cf8f 1672 if (lhs) {
1673 OP *rhs;
1674 lhs->op_flags |= OPf_PARENS;
1675 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1676
1677 *prelude_sentinel = op_append_list(
1678 OP_LINESEQ, *prelude_sentinel,
1679 newSTATEOP(
1680 0, NULL,
1681 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1682 )
1683 );
1684 }
1685 }
63915d26 1686
fc634bba 1687 /* default positional arguments */
e158cf8f 1688 {
1689 size_t i, lim, req;
1690 OP *nest;
63915d26 1691
e158cf8f 1692 nest = NULL;
63915d26 1693
e158cf8f 1694 req = param_spec->positional_required.used;
1695 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1696 ParamInit *cur = &param_spec->positional_optional.data[i];
1697 OP *var, *cond;
63915d26 1698
e158cf8f 1699 cond = newBINOP(
1700 OP_LT, 0,
1701 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
fc634bba 1702 mkconstiv(aTHX_ req + i + 1)
e158cf8f 1703 );
63915d26 1704
e158cf8f 1705 var = my_var(aTHX_ 0, cur->param.padoff);
63915d26 1706
e158cf8f 1707 nest = op_append_list(
1708 OP_LINESEQ, nest,
1709 newASSIGNOP(OPf_STACKED, var, 0, cur->init)
1710 );
1711 cur->init = NULL;
1712 nest = newCONDOP(
1713 0,
1714 cond,
1715 nest,
1716 NULL
1717 );
1718 }
1e0f1595 1719
e158cf8f 1720 *prelude_sentinel = op_append_list(
1721 OP_LINESEQ, *prelude_sentinel,
1722 nest
1723 );
c311cef3 1724 }
1725
e158cf8f 1726 /* named parameters */
1727 if (count_named_params(param_spec)) {
fc634bba 1728 size_t i, lim;
1729
1730 assert(param_spec->rest_hash != NOT_IN_PAD);
1731
1732 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1733 Param *cur = &param_spec->named_required.data[i];
1734 size_t n;
1735 char *p = SvPV(cur->name, n);
1736 OP *var, *cond;
1737
1738 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1739
1740 if (spec->flags & FLAG_CHECK_NARGS) {
51a483f8 1741 OP *xcroak, *msg;
fc634bba 1742
1743 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1744 var = newUNOP(OP_DELETE, 0, var);
1745
1746 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
51a483f8 1747 xcroak = newCVREF(
fc634bba 1748 OPf_WANT_SCALAR,
1749 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1750 );
51a483f8 1751 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1752
1753 cond = newUNOP(OP_EXISTS, 0, cond);
1754
51a483f8 1755 cond = newCONDOP(0, cond, var, xcroak);
fc634bba 1756 }
1757
1758 var = my_var(
1759 aTHX_
1760 OPf_MOD | (OPpLVAL_INTRO << 8),
1761 cur->padoff
1762 );
1763 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1764
1765 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1766 }
1767
1768 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1769 ParamInit *cur = &param_spec->named_optional.data[i];
1770 size_t n;
1771 char *p = SvPV(cur->param.name, n);
1772 OP *var, *cond;
1773
1774 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1775 var = newUNOP(OP_DELETE, 0, var);
1776
1777 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1778 cond = newUNOP(OP_EXISTS, 0, cond);
1779
1780 cond = newCONDOP(0, cond, var, cur->init);
1781 cur->init = NULL;
1782
1783 var = my_var(
1784 aTHX_
1785 OPf_MOD | (OPpLVAL_INTRO << 8),
1786 cur->param.padoff
1787 );
1788 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1789
1790 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1791 }
1792
1793 if (!param_spec->slurpy.name) {
1794 if (spec->flags & FLAG_CHECK_NARGS) {
1795 /* croak if %{rest} */
51a483f8 1796 OP *xcroak, *cond, *keys, *msg;
fc634bba 1797
1798 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1799 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1800 {
1801 OP *first, *mid, *last;
1802
1803 last = keys;
1804
1805 mid = mkconstpvs(", ");
1806 mid->op_sibling = last;
1807
1808 first = newOP(OP_PUSHMARK, 0);
1809
1810 keys = newLISTOP(OP_JOIN, 0, first, mid);
1811 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1812 ((LISTOP *)keys)->op_last = last;
1813 }
1814
1815 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1816 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1817
51a483f8 1818 xcroak = newCVREF(
fc634bba 1819 OPf_WANT_SCALAR,
1820 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1821 );
51a483f8 1822 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
fc634bba 1823
1824 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
51a483f8 1825 xcroak = newCONDOP(0, cond, xcroak, NULL);
fc634bba 1826
51a483f8 1827 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, xcroak));
fc634bba 1828 } else {
1829 OP *clear;
1830
1831 clear = newASSIGNOP(
1832 OPf_STACKED,
1833 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1834 0,
1835 newNULLLIST()
1836 );
1837
1838 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1839 }
1840 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1841 OP *var, *clear;
1842
1843 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1844
1845 var = my_var_g(
1846 aTHX_
1847 OP_PADAV,
1848 OPf_MOD | (OPpLVAL_INTRO << 8),
1849 param_spec->slurpy.padoff
1850 );
1851
1852 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1853
1854 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1855
1856 clear = newASSIGNOP(
1857 OPf_STACKED,
1858 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1859 0,
1860 newNULLLIST()
1861 );
1862
1863 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1864 }
1865 }
51a483f8 1866
1867 if (spec->flags & FLAG_CHECK_TARGS) {
1868 size_t i, lim, base;
1869
1870 base = 1;
1871 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1872 Param *cur = &param_spec->positional_required.data[i];
1873
1874 if (cur->type) {
1875 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1876 }
1877 }
1878 base += i;
1879
1880 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1881 Param *cur = &param_spec->positional_optional.data[i].param;
1882
1883 if (cur->type) {
1884 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1885 }
1886 }
1887 base += i;
1888
1889 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1890 Param *cur = &param_spec->named_required.data[i];
1891
1892 if (cur->type) {
1893 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1894 }
1895 }
1896 base += i;
1897
1898 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1899 Param *cur = &param_spec->named_optional.data[i].param;
1900
1901 if (cur->type) {
1902 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1903 }
1904 }
1905 base += i;
1906
1907 if (param_spec->slurpy.type) {
1908 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
a8492ba4 1909 OP *check, *list, *loop;
51a483f8 1910
a8492ba4 1911 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
51a483f8 1912
1913 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1914 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1915 } else {
1916 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1917 list = newUNOP(OP_VALUES, 0, list);
1918 }
1919
a8492ba4 1920 loop = newFOROP(0, NULL, list, check, NULL);
51a483f8 1921
1922 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, loop));
1923 }
1924 }
1e0f1595 1925 }
c311cef3 1926
1e0f1595 1927 /* finally let perl parse the actual subroutine body */
1928 body = parse_block(0);
c311cef3 1929
1e0f1595 1930 /* add '();' to make function return nothing by default */
1931 /* (otherwise the invisible parameter initialization can "leak" into
1932 the return value: fun ($x) {}->("asdf", 0) == 2) */
1933 if (*prelude_sentinel) {
1934 body = newSTATEOP(0, NULL, body);
db81d362 1935 }
1936
1e0f1595 1937 body = op_append_list(OP_LINESEQ, *prelude_sentinel, body);
1938 *prelude_sentinel = NULL;
1939
c311cef3 1940 /* it's go time. */
1941 {
53c979f0 1942 CV *cv;
c311cef3 1943 OP *const attrs = *attrs_sentinel;
1944 *attrs_sentinel = NULL;
53c979f0 1945
c311cef3 1946 SvREFCNT_inc_simple_void(PL_compcv);
1947
63915d26 1948 /* close outer block: '}' */
1949 S_block_end(aTHX_ save_ix, body);
1950
53c979f0 1951 cv = newATTRSUB(
c311cef3 1952 floor_ix,
53c979f0 1953 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
c311cef3 1954 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1955 attrs,
1956 body
1957 );
53c979f0 1958
1959 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1960
1961 if (saw_name) {
1962 *pop = newOP(OP_NULL, 0);
1963 return KEYWORD_PLUGIN_STMT;
1964 }
1965
1966 *pop = newUNOP(
1967 OP_REFGEN, 0,
1968 newSVOP(
1969 OP_ANONCODE, 0,
1970 (SV *)cv
1971 )
1972 );
1973 return KEYWORD_PLUGIN_EXPR;
db81d362 1974 }
db81d362 1975}
1976
1977static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
63915d26 1978 KWSpec spec;
db81d362 1979 int ret;
e4648f19 1980 Sentinel sen = { NULL };
db81d362 1981
e4648f19 1982 ENTER;
db81d362 1983 SAVETMPS;
1984
e4648f19 1985 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1986
1987 if (kw_flags(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
1988 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
db81d362 1989 } else {
7dd35535 1990 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
db81d362 1991 }
1992
1993 FREETMPS;
e4648f19 1994 LEAVE;
db81d362 1995
1996 return ret;
1997}
1998
1999WARNINGS_RESET
2000
53c979f0 2001MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
db81d362 2002PROTOTYPES: ENABLE
2003
53c979f0 2004UV
2005fp__cv_root(sv)
2006 SV * sv
2007 PREINIT:
79bce2d4 2008 CV *xcv;
53c979f0 2009 HV *hv;
2010 GV *gv;
2011 CODE:
79bce2d4 2012 xcv = sv_2cv(sv, &hv, &gv, 0);
2013 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
53c979f0 2014 OUTPUT:
2015 RETVAL
2016
db81d362 2017BOOT:
2018WARNINGS_ENABLE {
2019 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
426a4d69 2020 /**/
d8e5d540 2021 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2022 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
63915d26 2023 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
d8e5d540 2024 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2025 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
e158cf8f 2026 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
51a483f8 2027 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2028 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
db81d362 2029 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
d8e5d540 2030 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2031 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2032 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
426a4d69 2033 /**/
db81d362 2034 next_keyword_plugin = PL_keyword_plugin;
2035 PL_keyword_plugin = my_keyword_plugin;
2036} WARNINGS_RESET
Unnamed repository; edit this file to name it for gitweb.