2 Copyright 2012 Lukas Mai.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of either: the GNU General Public License as published
6 by the Free Software Foundation; or the Artistic License.
8 See http://dev.perl.org/licenses/ for more information.
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)
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) \
29 /* WARNINGS_ENABLEW(-Wshadow) :-( */ \
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)
40 #define WARNINGS_RESET
41 #define WARNINGS_ENABLE
45 #define PERL_NO_GET_CONTEXT
56 #define HAVE_PERL_VERSION(R, V, S) \
57 (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
59 #if HAVE_PERL_VERSION(5, 16, 0)
60 #define IF_HAVE_PERL_5_16(YES, NO) YES
62 #define IF_HAVE_PERL_5_16(YES, NO) NO
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)
70 #elif HAVE_PERL_VERSION(5, 15, 6)
72 #elif HAVE_PERL_VERSION(5, 15, 5)
74 #elif HAVE_PERL_VERSION(5, 13, 0)
77 #error "internal error: missing definition of KEY_my (your perl is too old)"
82 #define MY_PKG "Function::Parameters"
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 #define HINTK_REIFY_ MY_PKG "/reify:"
90 #define DEFSTRUCT(T) typedef struct T T; struct T
92 #define UV_BITS (sizeof (UV) * CHAR_BIT)
97 FLAG_DEFAULT_ARGS = 0x04,
98 FLAG_CHECK_NARGS = 0x08,
100 FLAG_NAMED_PARAMS = 0x20,
101 FLAG_TYPES_OK = 0x40,
102 FLAG_CHECK_TARGS = 0x80
112 static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
114 DEFSTRUCT(Resource) {
117 void (*destroy)(pTHX_ void *);
120 typedef Resource *Sentinel[1];
122 static void sentinel_clear_void(pTHX_ void *p) {
127 cur->destroy(aTHX_ cur->data);
129 cur->data = (void *)"no";
136 static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
139 Newx(cur, 1, Resource);
141 cur->destroy = destroy;
148 static void sentinel_disarm(Resource *p) {
152 static void my_sv_refcnt_dec_void(pTHX_ void *p) {
157 static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
158 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
163 #if HAVE_PERL_VERSION(5, 17, 2)
164 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
166 #define MY_OP_SLABBED(O) 0
174 static void op_guard_init(OpGuard *p) {
176 p->needs_freed = FALSE;
179 static OpGuard op_guard_transfer(OpGuard *p) {
185 static OP *op_guard_relinquish(OpGuard *p) {
191 static void op_guard_update(OpGuard *p, OP *o) {
193 p->needs_freed = o && !MY_OP_SLABBED(o);
196 static void op_guard_clear(pTHX_ OpGuard *p) {
197 if (p->needs_freed) {
202 static void free_op_guard_void(pTHX_ void *vp) {
204 op_guard_clear(aTHX_ p);
208 static void free_op_void(pTHX_ void *vp) {
213 #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
215 static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
217 const char *sv_p = SvPV(sv, sv_len);
218 return memcmp(sv_p, p, n) == 0;
222 #include "padop_on_crack.c.inc"
226 MY_ATTR_LVALUE = 0x01,
227 MY_ATTR_METHOD = 0x02,
228 MY_ATTR_SPECIAL = 0x04
231 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
232 char ds[UTF8_MAXBYTES + 1], *d;
233 d = (char *)uvchr_to_utf8((U8 *)ds, c);
237 sv_catpvn(sv, ds, d - ds);
241 #define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
242 #define MY_UNI_IDCONT(C) isALNUM_uni(C)
244 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
245 bool at_start, at_substart;
247 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
252 at_start = at_substart = TRUE;
253 c = lex_peek_unichar(0);
256 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
258 my_sv_cat_c(aTHX_ sv, c);
260 c = lex_peek_unichar(0);
261 } else if (allow_package && !at_substart && c == '\'') {
263 c = lex_peek_unichar(0);
264 if (!MY_UNI_IDFIRST(c)) {
265 lex_stuff_pvs("'", 0);
270 } else if (allow_package && (at_start || !at_substart) && c == ':') {
272 if (lex_peek_unichar(0) != ':') {
273 lex_stuff_pvs(":", 0);
277 c = lex_peek_unichar(0);
278 if (!MY_UNI_IDFIRST(c)) {
279 lex_stuff_pvs("::", 0);
290 return SvCUR(sv) ? sv : NULL;
293 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
298 start = CopLINE(PL_curcop);
300 sv = sentinel_mortalize(sen, newSVpvs(""));
307 c = lex_read_unichar(0);
309 CopLINE_set(PL_curcop, start);
314 c = lex_read_unichar(0);
316 CopLINE_set(PL_curcop, start);
319 if (keep_backslash || (c != '(' && c != ')')) {
322 } else if (c == '(') {
324 } else if (c == ')') {
331 my_sv_cat_c(aTHX_ sv, c);
337 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
338 char *start, *r, *w, *end;
342 start = SvPV(proto, len);
345 for (w = r = start; r < end; r++) {
351 SvCUR_set(proto, w - start);
355 if (!ckWARN(WARN_ILLEGALPROTO)) {
359 /* check for bad characters */
360 if (strspn(start, "$@%*;[]&\\_+") != len) {
361 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
363 packWARN(WARN_ILLEGALPROTO),
364 "Illegal character in prototype for %"SVf" : %s",
373 : pv_pretty(dsv, start, len, 60, NULL, NULL,
374 PERL_PV_ESCAPE_NONASCII
380 for (r = start; r < end; r++) {
384 packWARN(WARN_ILLEGALPROTO),
385 "Illegal character in prototype for %"SVf" : %s",
386 SVfARG(declarator), r
391 if (r[1] && !strchr(";@%", *r)) {
393 packWARN(WARN_ILLEGALPROTO),
394 "Illegal character after '_' in prototype for %"SVf" : %s",
395 SVfARG(declarator), r
405 packWARN(WARN_ILLEGALPROTO),
406 "prototype after '%c' for %"SVf": %s",
407 *r, SVfARG(declarator), r + 1
415 if (strchr("$@%&*", *r)) {
420 for (; r < end && *r != ']'; r++) {
421 if (!strchr("$@%&*", *r)) {
425 if (*r == ']' && r[-1] != '[') {
430 packWARN(WARN_ILLEGALPROTO),
431 "Illegal character after '\\' in prototype for %"SVf" : %s",
432 SVfARG(declarator), r
446 static SV *parse_type(pTHX_ Sentinel, const SV *);
448 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
452 t = my_scan_word(aTHX_ sen, TRUE);
455 c = lex_peek_unichar(0);
461 my_sv_cat_c(aTHX_ t, c);
463 u = parse_type(aTHX_ sen, declarator);
466 c = lex_peek_unichar(0);
468 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
473 my_sv_cat_c(aTHX_ t, c);
479 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
483 t = parse_type_paramd(aTHX_ sen, declarator);
485 c = lex_peek_unichar(0);
492 my_sv_cat_c(aTHX_ t, c);
493 u = parse_type_paramd(aTHX_ sen, declarator);
496 c = lex_peek_unichar(0);
502 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, const KWSpec *spec, SV *name) {
508 type_reifiers = get_av(MY_PKG "::type_reifiers", 0);
509 assert(type_reifiers != NULL);
511 if (spec->reify_type < 0 || spec->reify_type > av_len(type_reifiers)) {
512 croak("In %"SVf": internal error: reify_type [%ld] out of range [%ld]", SVfARG(declarator), (long)spec->reify_type, (long)(av_len(type_reifiers) + 1));
515 psv = av_fetch(type_reifiers, spec->reify_type, 0);
528 n = call_sv(sv, G_SCALAR);
532 /* don't warn about n being unused if assert() is compiled out */
535 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
542 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
555 DEFSTRUCT(ParamInit) {
560 #define VEC(B) B ## _Vec
562 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
568 DEFVECTOR(ParamInit);
570 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
573 Newx(p->data, p->size, B); \
574 } static void N(VEC(B) *)
576 DEFSTRUCT(ParamSpec) {
578 VEC(Param) positional_required;
579 VEC(ParamInit) positional_optional;
580 VEC(Param) named_required;
581 VEC(ParamInit) named_optional;
586 DEFVECTOR_INIT(pv_init, Param);
587 DEFVECTOR_INIT(piv_init, ParamInit);
589 static void p_init(Param *p) {
591 p->padoff = NOT_IN_PAD;
595 static void ps_init(ParamSpec *ps) {
596 p_init(&ps->invocant);
597 pv_init(&ps->positional_required);
598 piv_init(&ps->positional_optional);
599 pv_init(&ps->named_required);
600 piv_init(&ps->named_optional);
602 ps->rest_hash = NOT_IN_PAD;
605 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
606 assert(p->used <= p->size); \
607 if (p->used == p->size) { \
608 const size_t n = p->size / 2 * 3 + 1; \
609 Renew(p->data, n, B); \
612 return &p->data[p->used]; \
613 } static B (*N(VEC(B) *))
615 DEFVECTOR_EXTEND(pv_extend, Param);
616 DEFVECTOR_EXTEND(piv_extend, ParamInit);
618 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
621 F(aTHX_ &p->data[p->used]); \
626 } static void N(pTHX_ VEC(B) *)
628 static void p_clear(pTHX_ Param *p) {
630 p->padoff = NOT_IN_PAD;
634 static void pi_clear(pTHX_ ParamInit *pi) {
635 p_clear(aTHX_ &pi->param);
636 op_guard_clear(aTHX_ &pi->init);
639 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
640 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
642 static void ps_clear(pTHX_ ParamSpec *ps) {
643 p_clear(aTHX_ &ps->invocant);
645 pv_clear(aTHX_ &ps->positional_required);
646 piv_clear(aTHX_ &ps->positional_optional);
648 pv_clear(aTHX_ &ps->named_required);
649 piv_clear(aTHX_ &ps->named_optional);
651 p_clear(aTHX_ &ps->slurpy);
654 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
657 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
661 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
662 if (sv_eq(sv, ps->positional_required.data[i].name)) {
667 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
668 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
673 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
674 if (sv_eq(sv, ps->named_required.data[i].name)) {
679 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
680 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
688 static void ps_free_void(pTHX_ void *p) {
693 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
696 return SvTRUE(ks->shift) ? 1 : 0;
698 if (ps->invocant.name) {
701 n += ps->positional_required.used;
702 n += ps->named_required.used * 2;
706 static int args_max(const ParamSpec *ps) {
711 if (ps->invocant.name) {
714 n += ps->positional_required.used;
715 n += ps->positional_optional.used;
716 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
722 static size_t count_positional_params(const ParamSpec *ps) {
723 return ps->positional_required.used + ps->positional_optional.used;
726 static size_t count_named_params(const ParamSpec *ps) {
727 return ps->named_required.used + ps->named_optional.used;
730 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
735 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
741 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
743 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
753 PARAM_INVOCANT = 0x01,
757 static PADOFFSET parse_param(
760 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
761 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
771 c = lex_peek_unichar(0);
773 if (spec->flags & FLAG_TYPES_OK) {
777 Resource *expr_sentinel;
781 floor = start_subparse(FALSE, 0);
782 SAVEFREESV(PL_compcv);
783 CvSPECIAL_on(PL_compcv);
785 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
786 croak("In %"SVf": invalid type expression", SVfARG(declarator));
788 if (MY_OP_SLABBED(expr)) {
789 expr_sentinel = NULL;
791 expr_sentinel = sentinel_register(sen, expr, free_op_void);
795 c = lex_peek_unichar(0);
797 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
802 SvREFCNT_inc_simple_void(PL_compcv);
804 sentinel_disarm(expr_sentinel);
806 *ptype = my_eval(aTHX_ sen, floor, expr);
807 if (!SvROK(*ptype)) {
808 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
810 if (!sv_isobject(*ptype)) {
811 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
814 c = lex_peek_unichar(0);
815 } else if (MY_UNI_IDFIRST(c)) {
816 *ptype = parse_type(aTHX_ sen, declarator);
817 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
819 c = lex_peek_unichar(0);
827 *pflags |= PARAM_NAMED;
829 c = lex_peek_unichar(0);
833 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
836 if (!(c == '$' || c == '@' || c == '%')) {
837 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
845 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
846 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
848 sv_insert(name, 0, 0, &sigil, 1);
852 c = lex_peek_unichar(0);
859 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
860 param_spec->invocant.name = spec->shift;
861 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
864 op_guard_update(ginit, parse_termexpr(0));
867 c = lex_peek_unichar(0);
871 *pflags |= PARAM_INVOCANT;
874 } else if (c == ',') {
877 } else if (c != ')') {
879 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
881 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
884 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
887 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
888 OP *var = newOP(type, flags);
889 var->op_targ = padoff;
893 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
894 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
897 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
898 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
899 return newBINOP(OP_HELEM, 0, hv, k);
902 static OP *mkconstsv(pTHX_ SV *sv) {
903 return newSVOP(OP_CONST, 0, sv);
906 static OP *mkconstiv(pTHX_ IV i) {
907 return mkconstsv(aTHX_ newSViv(i));
910 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
911 return mkconstsv(aTHX_ newSVpv(p, n));
914 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
916 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
917 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
918 OP *chk, *err, *msg, *xcroak;
920 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
924 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
925 args = op_append_elem(
929 : my_var(aTHX_ 0, padoff)
931 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
934 msg->op_type = OP_ENTERSUB;
935 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
936 msg->op_flags |= OPf_STACKED;
939 msg = newBINOP(OP_CONCAT, 0, err, msg);
943 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
945 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
950 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
951 args = op_append_elem(
955 : my_var(aTHX_ 0, padoff)
957 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
960 chk->op_type = OP_ENTERSUB;
961 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
962 chk->op_flags |= OPf_STACKED;
965 chk = newLOGOP(OP_OR, 0, chk, xcroak);
969 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
970 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
973 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
987 char *p = SvPV(declarator, n);
988 char *q = memchr(p, ' ', n);
989 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
993 if (SvTRUE(kws->shift)) {
999 mPUSHs(newRV_noinc((SV *)newAV()));
1000 mPUSHs(newRV_noinc((SV *)newAV()));
1001 mPUSHs(newRV_noinc((SV *)newAV()));
1002 mPUSHs(newRV_noinc((SV *)newAV()));
1007 if (ps->invocant.name) {
1008 PUSHs(ps->invocant.name);
1009 if (ps->invocant.type) {
1010 PUSHs(ps->invocant.type);
1023 lim = ps->positional_required.used;
1027 av_extend(av, (lim - 1) * 2);
1028 for (i = 0; i < lim; i++) {
1029 Param *cur = &ps->positional_required.data[i];
1030 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1031 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1035 mPUSHs(newRV_noinc((SV *)av));
1041 lim = ps->positional_optional.used;
1045 av_extend(av, (lim - 1) * 2);
1046 for (i = 0; i < lim; i++) {
1047 Param *cur = &ps->positional_optional.data[i].param;
1048 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1049 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1053 mPUSHs(newRV_noinc((SV *)av));
1059 lim = ps->named_required.used;
1063 av_extend(av, (lim - 1) * 2);
1064 for (i = 0; i < lim; i++) {
1065 Param *cur = &ps->named_required.data[i];
1066 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1067 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1071 mPUSHs(newRV_noinc((SV *)av));
1077 lim = ps->named_optional.used;
1081 av_extend(av, (lim - 1) * 2);
1082 for (i = 0; i < lim; i++) {
1083 Param *cur = &ps->named_optional.data[i].param;
1084 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1085 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1089 mPUSHs(newRV_noinc((SV *)av));
1092 if (ps->slurpy.name) {
1093 PUSHs(ps->slurpy.name);
1094 if (ps->slurpy.type) {
1095 PUSHs(ps->slurpy.type);
1107 call_pv(MY_PKG "::_register_info", G_VOID);
1113 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1114 ParamSpec *param_spec;
1119 OpGuard *prelude_sentinel;
1121 OpGuard *attrs_sentinel;
1123 unsigned builtin_attrs;
1126 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1127 if (lex_bufutf8()) {
1128 SvUTF8_on(declarator);
1137 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1139 if (PL_parser->expect != XSTATE) {
1140 /* bail out early so we don't predeclare $saw_name */
1141 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1144 sv_catpvs(declarator, " ");
1145 sv_catsv(declarator, saw_name);
1148 sv_eq_pvs(saw_name, "BEGIN") ||
1149 sv_eq_pvs(saw_name, "END") ||
1150 sv_eq_pvs(saw_name, "INIT") ||
1151 sv_eq_pvs(saw_name, "CHECK") ||
1152 sv_eq_pvs(saw_name, "UNITCHECK")
1154 builtin_attrs |= MY_ATTR_SPECIAL;
1158 } else if (!(spec->flags & FLAG_ANON_OK)) {
1159 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1161 sv_catpvs(declarator, " (anon)");
1164 /* we're a subroutine declaration */
1165 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1166 SAVEFREESV(PL_compcv);
1168 /* create outer block: '{' */
1169 save_ix = S_block_start(aTHX_ TRUE);
1171 /* initialize synthetic optree */
1172 Newx(prelude_sentinel, 1, OpGuard);
1173 op_guard_init(prelude_sentinel);
1174 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1179 c = lex_peek_unichar(0);
1181 OpGuard *init_sentinel;
1183 Newx(init_sentinel, 1, OpGuard);
1184 op_guard_init(init_sentinel);
1185 sentinel_register(sen, init_sentinel, free_op_guard_void);
1187 Newx(param_spec, 1, ParamSpec);
1188 ps_init(param_spec);
1189 sentinel_register(sen, param_spec, ps_free_void);
1191 lex_read_unichar(0);
1194 while ((c = lex_peek_unichar(0)) != ')') {
1200 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1204 sigil = SvPV_nolen(name)[0];
1206 /* internal consistency */
1207 if (flags & PARAM_NAMED) {
1208 if (flags & PARAM_INVOCANT) {
1209 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1212 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1214 } else if (flags & PARAM_INVOCANT) {
1215 if (init_sentinel->op) {
1216 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1219 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1221 } else if (sigil != '$' && init_sentinel->op) {
1222 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1225 /* external constraints */
1226 if (param_spec->slurpy.name) {
1227 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1230 assert(!init_sentinel->op);
1231 param_spec->slurpy.name = name;
1232 param_spec->slurpy.padoff = padoff;
1233 param_spec->slurpy.type = type;
1237 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1238 croak("In %"SVf": positional parameter %"SVf" can't appear after named parameter %"SVf"", SVfARG(declarator), SVfARG(name), SVfARG((param_spec->named_required.used ? param_spec->named_required.data[0] : param_spec->named_optional.data[0].param).name));
1241 if (flags & PARAM_INVOCANT) {
1242 if (param_spec->invocant.name) {
1243 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1245 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1246 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1248 if (!(spec->flags & FLAG_INVOCANT)) {
1249 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1251 param_spec->invocant.name = name;
1252 param_spec->invocant.padoff = padoff;
1253 param_spec->invocant.type = type;
1257 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1258 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1261 if (ps_contains(aTHX_ param_spec, name)) {
1262 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1265 if (flags & PARAM_NAMED) {
1266 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1267 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1270 if (init_sentinel->op) {
1271 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1272 pi->param.name = name;
1273 pi->param.padoff = padoff;
1274 pi->param.type = type;
1275 pi->init = op_guard_transfer(init_sentinel);
1276 param_spec->named_optional.used++;
1280 if (param_spec->positional_optional.used) {
1281 croak("In %"SVf": can't combine optional positional (%"SVf") and required named (%"SVf") parameters", SVfARG(declarator), SVfARG(param_spec->positional_optional.data[0].param.name), SVfARG(name));
1284 p = pv_extend(¶m_spec->named_required);
1288 param_spec->named_required.used++;
1291 if (init_sentinel->op || param_spec->positional_optional.used) {
1292 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1293 pi->param.name = name;
1294 pi->param.padoff = padoff;
1295 pi->param.type = type;
1296 pi->init = op_guard_transfer(init_sentinel);
1297 param_spec->positional_optional.used++;
1299 Param *p = pv_extend(¶m_spec->positional_required);
1303 param_spec->positional_required.used++;
1308 lex_read_unichar(0);
1311 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1312 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1313 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1316 param_spec->invocant.name = spec->shift;
1317 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1323 c = lex_peek_unichar(0);
1325 lex_read_unichar(0);
1328 c = lex_peek_unichar(0);
1330 lex_stuff_pvs(":", 0);
1333 lex_read_unichar(0);
1334 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1335 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1337 my_check_prototype(aTHX_ sen, declarator, proto);
1339 c = lex_peek_unichar(0);
1340 if (!(c == ':' || c == '{')) {
1341 lex_stuff_pvs(":", 0);
1348 Newx(attrs_sentinel, 1, OpGuard);
1349 op_guard_init(attrs_sentinel);
1350 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
1352 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1354 /* kludge default attributes in */
1355 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1356 lex_stuff_sv(spec->attrs, 0);
1361 lex_read_unichar(0);
1363 c = lex_peek_unichar(0);
1368 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1373 c = lex_peek_unichar(0);
1376 if (sv_eq_pvs(attr, "lvalue")) {
1377 builtin_attrs |= MY_ATTR_LVALUE;
1379 } else if (sv_eq_pvs(attr, "method")) {
1380 builtin_attrs |= MY_ATTR_METHOD;
1385 lex_read_unichar(0);
1386 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1387 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1389 sv_catpvs(attr, "(");
1391 sv_catpvs(attr, ")");
1394 c = lex_peek_unichar(0);
1398 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
1402 lex_read_unichar(0);
1404 c = lex_peek_unichar(0);
1411 if (c != '{') /* '}' - hi, vim */ {
1412 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1415 /* surprise predeclaration! */
1417 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1418 starts parsing the body */
1419 const I32 sub_ix = start_subparse(FALSE, 0);
1420 SAVEFREESV(PL_compcv);
1422 SvREFCNT_inc_simple_void(PL_compcv);
1426 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1427 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1433 if (builtin_attrs & MY_ATTR_LVALUE) {
1434 CvLVALUE_on(PL_compcv);
1436 if (builtin_attrs & MY_ATTR_METHOD) {
1437 CvMETHOD_on(PL_compcv);
1439 if (builtin_attrs & MY_ATTR_SPECIAL) {
1440 CvSPECIAL_on(PL_compcv);
1443 /* check number of arguments */
1444 if (spec->flags & FLAG_CHECK_NARGS) {
1447 amin = args_min(aTHX_ param_spec, spec);
1449 OP *chk, *cond, *err, *xcroak;
1451 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1455 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1463 xcroak = newCVREF(OPf_WANT_SCALAR,
1464 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1465 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1466 op_append_elem(OP_LIST, err, xcroak));
1468 cond = newBINOP(OP_LT, 0,
1469 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1470 mkconstiv(aTHX_ amin));
1471 chk = newLOGOP(OP_AND, 0, cond, err);
1473 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1476 amax = args_max(param_spec);
1478 OP *chk, *cond, *err, *xcroak;
1480 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1484 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1494 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1496 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1497 op_append_elem(OP_LIST, err, xcroak));
1501 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1502 mkconstiv(aTHX_ amax)
1504 chk = newLOGOP(OP_AND, 0, cond, err);
1506 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1509 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1510 OP *chk, *cond, *err, *xcroak;
1511 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1513 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1517 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1519 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1520 op_append_elem(OP_LIST, err, xcroak));
1522 cond = newBINOP(OP_GT, 0,
1523 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1524 mkconstiv(aTHX_ fixed));
1525 cond = newLOGOP(OP_AND, 0,
1527 newBINOP(OP_MODULO, 0,
1529 ? newBINOP(OP_SUBTRACT, 0,
1530 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1531 mkconstiv(aTHX_ fixed))
1532 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1533 mkconstiv(aTHX_ 2)));
1534 chk = newLOGOP(OP_AND, 0, cond, err);
1536 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1541 /* my $invocant = shift; */
1542 if (SvTRUE(spec->shift)) {
1547 OPf_MOD | (OPpLVAL_INTRO << 8),
1548 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1550 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1552 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1555 /* my $invocant = shift; */
1556 if (param_spec->invocant.name) {
1561 OPf_MOD | (OPpLVAL_INTRO << 8),
1562 param_spec->invocant.padoff
1564 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1566 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1568 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1569 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant))));
1573 /* my (...) = @_; */
1580 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1581 OP *const var = my_var(
1583 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1584 param_spec->positional_required.data[i].padoff
1586 lhs = op_append_elem(OP_LIST, lhs, var);
1589 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1590 OP *const var = my_var(
1592 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1593 param_spec->positional_optional.data[i].param.padoff
1595 lhs = op_append_elem(OP_LIST, lhs, var);
1605 * 1) no named params
1612 * => synthetic %{rest}
1613 * 2.2) slurpy is a hash
1615 * 2.3) slurpy is an array
1616 * => synthetic %{rest}
1617 * remember to declare array later
1620 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1621 if (!count_named_params(param_spec)) {
1622 if (param_spec->slurpy.name) {
1623 padoff = param_spec->slurpy.padoff;
1624 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1626 padoff = NOT_IN_PAD;
1629 } else if (slurpy_hash) {
1630 padoff = param_spec->slurpy.padoff;
1633 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1637 if (padoff != NOT_IN_PAD) {
1638 OP *const var = my_var_g(
1641 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1645 lhs = op_append_elem(OP_LIST, lhs, var);
1647 if (type == OP_PADHV) {
1648 param_spec->rest_hash = padoff;
1655 lhs->op_flags |= OPf_PARENS;
1656 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1658 op_guard_update(prelude_sentinel, op_append_list(
1659 OP_LINESEQ, prelude_sentinel->op,
1662 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1668 /* default positional arguments */
1675 req = param_spec->positional_required.used;
1676 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1677 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1682 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1683 mkconstiv(aTHX_ req + i + 1)
1686 var = my_var(aTHX_ 0, cur->param.padoff);
1688 nest = op_append_list(
1690 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
1700 op_guard_update(prelude_sentinel, op_append_list(
1701 OP_LINESEQ, prelude_sentinel->op,
1706 /* named parameters */
1707 if (count_named_params(param_spec)) {
1710 assert(param_spec->rest_hash != NOT_IN_PAD);
1712 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1713 Param *cur = ¶m_spec->named_required.data[i];
1715 char *p = SvPV(cur->name, n);
1718 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1720 if (spec->flags & FLAG_CHECK_NARGS) {
1723 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1724 var = newUNOP(OP_DELETE, 0, var);
1726 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1729 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1731 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1733 cond = newUNOP(OP_EXISTS, 0, cond);
1735 cond = newCONDOP(0, cond, var, xcroak);
1740 OPf_MOD | (OPpLVAL_INTRO << 8),
1743 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1745 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1748 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1749 ParamInit *cur = ¶m_spec->named_optional.data[i];
1751 char *p = SvPV(cur->param.name, n);
1754 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1755 var = newUNOP(OP_DELETE, 0, var);
1757 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1758 cond = newUNOP(OP_EXISTS, 0, cond);
1760 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
1764 OPf_MOD | (OPpLVAL_INTRO << 8),
1767 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1769 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1772 if (!param_spec->slurpy.name) {
1773 if (spec->flags & FLAG_CHECK_NARGS) {
1774 /* croak if %{rest} */
1775 OP *xcroak, *cond, *keys, *msg;
1777 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1778 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1780 OP *first, *mid, *last;
1784 mid = mkconstpvs(", ");
1785 mid->op_sibling = last;
1787 first = newOP(OP_PUSHMARK, 0);
1789 keys = newLISTOP(OP_JOIN, 0, first, mid);
1790 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1791 ((LISTOP *)keys)->op_last = last;
1794 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1795 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1799 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1801 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1803 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1804 xcroak = newCONDOP(0, cond, xcroak, NULL);
1806 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
1810 clear = newASSIGNOP(
1812 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1817 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1819 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1822 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1827 OPf_MOD | (OPpLVAL_INTRO << 8),
1828 param_spec->slurpy.padoff
1831 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1833 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1835 clear = newASSIGNOP(
1837 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1842 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1846 if (spec->flags & FLAG_CHECK_TARGS) {
1847 size_t i, lim, base;
1850 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1851 Param *cur = ¶m_spec->positional_required.data[i];
1854 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1859 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1860 Param *cur = ¶m_spec->positional_optional.data[i].param;
1863 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1868 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1869 Param *cur = ¶m_spec->named_required.data[i];
1872 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1877 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1878 Param *cur = ¶m_spec->named_optional.data[i].param;
1881 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1886 if (param_spec->slurpy.type) {
1887 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1888 OP *check, *list, *loop;
1890 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1892 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1893 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1895 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1896 list = newUNOP(OP_VALUES, 0, list);
1899 loop = newFOROP(0, NULL, list, check, NULL);
1901 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
1906 /* finally let perl parse the actual subroutine body */
1907 body = parse_block(0);
1909 /* add '();' to make function return nothing by default */
1910 /* (otherwise the invisible parameter initialization can "leak" into
1911 the return value: fun ($x) {}->("asdf", 0) == 2) */
1912 if (prelude_sentinel->op) {
1913 body = newSTATEOP(0, NULL, body);
1916 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1921 OP *const attrs = op_guard_relinquish(attrs_sentinel);
1923 SvREFCNT_inc_simple_void(PL_compcv);
1925 /* close outer block: '}' */
1926 S_block_end(aTHX_ save_ix, body);
1930 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
1931 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1937 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1941 *pop = newOP(OP_NULL, 0);
1942 return KEYWORD_PLUGIN_STMT;
1952 return KEYWORD_PLUGIN_EXPR;
1956 static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1959 const char *p, *kw_active;
1960 STRLEN kw_active_len;
1963 if (!(hints = GvHV(PL_hintgv))) {
1966 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1970 kw_active = SvPV(sv, kw_active_len);
1971 if (kw_active_len <= kw_len) {
1975 kw_is_utf8 = lex_bufutf8();
1979 (p = strchr(p, *kw_ptr)) &&
1980 p < kw_active + kw_active_len - kw_len;
1984 (p == kw_active || p[-1] == ' ') &&
1986 memcmp(kw_ptr, p, kw_len) == 0
1991 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1994 spec->reify_type = 0;
1995 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1996 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1998 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1999 const char *fk_ptr_; \
2003 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
2004 sv_catpvn(fk_sv_, PTR, LEN); \
2005 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
2006 fk_xlen_ = fk_len_; \
2008 fk_xlen_ = -fk_xlen_; \
2010 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
2011 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2015 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2016 spec->flags = SvIV(*psv);
2018 FETCH_HINTK_INTO(REIFY_, kw_ptr, kw_len, psv);
2019 spec->reify_type = SvIV(*psv);
2021 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2022 SvSetSV(spec->shift, *psv);
2024 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2025 SvSetSV(spec->attrs, *psv);
2027 #undef FETCH_HINTK_INTO
2034 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
2035 Sentinel sen = { NULL };
2039 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2040 /* scope was entered, 'sen' and 'spec' are initialized */
2041 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2045 /* not one of our keywords, no allocation done */
2046 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2054 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2065 xcv = sv_2cv(sv, &hv, &gv, 0);
2066 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
2072 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2074 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2075 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2076 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2077 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2078 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2079 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2080 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2081 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2082 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2083 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2084 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2085 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2086 newCONSTSUB(stash, "HINTK_REIFY_", newSVpvs(HINTK_REIFY_));
2088 next_keyword_plugin = PL_keyword_plugin;
2089 PL_keyword_plugin = my_keyword_plugin;