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
95 FLAG_DEFAULT_ARGS = 0x004,
96 FLAG_CHECK_NARGS = 0x008,
97 FLAG_INVOCANT = 0x010,
98 FLAG_NAMED_PARAMS = 0x020,
99 FLAG_TYPES_OK = 0x040,
100 FLAG_CHECK_TARGS = 0x080,
111 static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
113 DEFSTRUCT(Resource) {
116 void (*destroy)(pTHX_ void *);
119 typedef Resource *Sentinel[1];
121 static void sentinel_clear_void(pTHX_ void *p) {
126 cur->destroy(aTHX_ cur->data);
128 cur->data = (void *)"no";
135 static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
138 Newx(cur, 1, Resource);
140 cur->destroy = destroy;
147 static void sentinel_disarm(Resource *p) {
151 static void my_sv_refcnt_dec_void(pTHX_ void *p) {
156 static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
157 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
162 #if HAVE_PERL_VERSION(5, 17, 2)
163 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
165 #define MY_OP_SLABBED(O) 0
173 static void op_guard_init(OpGuard *p) {
175 p->needs_freed = FALSE;
178 static OpGuard op_guard_transfer(OpGuard *p) {
184 static OP *op_guard_relinquish(OpGuard *p) {
190 static void op_guard_update(OpGuard *p, OP *o) {
192 p->needs_freed = o && !MY_OP_SLABBED(o);
195 static void op_guard_clear(pTHX_ OpGuard *p) {
196 if (p->needs_freed) {
201 static void free_op_guard_void(pTHX_ void *vp) {
203 op_guard_clear(aTHX_ p);
207 static void free_op_void(pTHX_ void *vp) {
212 #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
214 static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
216 const char *sv_p = SvPV(sv, sv_len);
217 return memcmp(sv_p, p, n) == 0;
221 #include "padop_on_crack.c.inc"
225 MY_ATTR_LVALUE = 0x01,
226 MY_ATTR_METHOD = 0x02,
227 MY_ATTR_SPECIAL = 0x04
230 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
231 char ds[UTF8_MAXBYTES + 1], *d;
232 d = (char *)uvchr_to_utf8((U8 *)ds, c);
236 sv_catpvn(sv, ds, d - ds);
240 #define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
241 #define MY_UNI_IDCONT(C) isALNUM_uni(C)
243 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
244 bool at_start, at_substart;
246 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
251 at_start = at_substart = TRUE;
252 c = lex_peek_unichar(0);
255 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
257 my_sv_cat_c(aTHX_ sv, c);
259 c = lex_peek_unichar(0);
260 } else if (allow_package && !at_substart && c == '\'') {
262 c = lex_peek_unichar(0);
263 if (!MY_UNI_IDFIRST(c)) {
264 lex_stuff_pvs("'", 0);
269 } else if (allow_package && (at_start || !at_substart) && c == ':') {
271 if (lex_peek_unichar(0) != ':') {
272 lex_stuff_pvs(":", 0);
276 c = lex_peek_unichar(0);
277 if (!MY_UNI_IDFIRST(c)) {
278 lex_stuff_pvs("::", 0);
289 return SvCUR(sv) ? sv : NULL;
292 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
297 start = CopLINE(PL_curcop);
299 sv = sentinel_mortalize(sen, newSVpvs(""));
306 c = lex_read_unichar(0);
308 CopLINE_set(PL_curcop, start);
313 c = lex_read_unichar(0);
315 CopLINE_set(PL_curcop, start);
318 if (keep_backslash || (c != '(' && c != ')')) {
321 } else if (c == '(') {
323 } else if (c == ')') {
330 my_sv_cat_c(aTHX_ sv, c);
336 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
337 char *start, *r, *w, *end;
341 start = SvPV(proto, len);
344 for (w = r = start; r < end; r++) {
350 SvCUR_set(proto, w - start);
354 if (!ckWARN(WARN_ILLEGALPROTO)) {
358 /* check for bad characters */
359 if (strspn(start, "$@%*;[]&\\_+") != len) {
360 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
362 packWARN(WARN_ILLEGALPROTO),
363 "Illegal character in prototype for %"SVf" : %s",
372 : pv_pretty(dsv, start, len, 60, NULL, NULL,
373 PERL_PV_ESCAPE_NONASCII
379 for (r = start; r < end; r++) {
383 packWARN(WARN_ILLEGALPROTO),
384 "Illegal character in prototype for %"SVf" : %s",
385 SVfARG(declarator), r
390 if (r[1] && !strchr(";@%", *r)) {
392 packWARN(WARN_ILLEGALPROTO),
393 "Illegal character after '_' in prototype for %"SVf" : %s",
394 SVfARG(declarator), r
404 packWARN(WARN_ILLEGALPROTO),
405 "prototype after '%c' for %"SVf": %s",
406 *r, SVfARG(declarator), r + 1
414 if (strchr("$@%&*", *r)) {
419 for (; r < end && *r != ']'; r++) {
420 if (!strchr("$@%&*", *r)) {
424 if (*r == ']' && r[-1] != '[') {
429 packWARN(WARN_ILLEGALPROTO),
430 "Illegal character after '\\' in prototype for %"SVf" : %s",
431 SVfARG(declarator), r
445 static SV *parse_type(pTHX_ Sentinel, const SV *);
447 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
451 t = my_scan_word(aTHX_ sen, TRUE);
454 c = lex_peek_unichar(0);
460 my_sv_cat_c(aTHX_ t, c);
462 u = parse_type(aTHX_ sen, declarator);
465 c = lex_peek_unichar(0);
467 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
472 my_sv_cat_c(aTHX_ t, c);
478 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
482 t = parse_type_paramd(aTHX_ sen, declarator);
484 c = lex_peek_unichar(0);
491 my_sv_cat_c(aTHX_ t, c);
492 u = parse_type_paramd(aTHX_ sen, declarator);
495 c = lex_peek_unichar(0);
501 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, const KWSpec *spec, SV *name) {
507 type_reifiers = get_av(MY_PKG "::type_reifiers", 0);
508 assert(type_reifiers != NULL);
510 if (spec->reify_type < 0 || spec->reify_type > av_len(type_reifiers)) {
511 croak("In %"SVf": internal error: reify_type [%ld] out of range [%ld]", SVfARG(declarator), (long)spec->reify_type, (long)(av_len(type_reifiers) + 1));
514 psv = av_fetch(type_reifiers, spec->reify_type, 0);
527 n = call_sv(sv, G_SCALAR);
531 /* don't warn about n being unused if assert() is compiled out */
534 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
541 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
554 DEFSTRUCT(ParamInit) {
559 #define VEC(B) B ## _Vec
561 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
567 DEFVECTOR(ParamInit);
569 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
572 Newx(p->data, p->size, B); \
573 } static void N(VEC(B) *)
575 DEFSTRUCT(ParamSpec) {
577 VEC(Param) positional_required;
578 VEC(ParamInit) positional_optional;
579 VEC(Param) named_required;
580 VEC(ParamInit) named_optional;
585 DEFVECTOR_INIT(pv_init, Param);
586 DEFVECTOR_INIT(piv_init, ParamInit);
588 static void p_init(Param *p) {
590 p->padoff = NOT_IN_PAD;
594 static void ps_init(ParamSpec *ps) {
595 p_init(&ps->invocant);
596 pv_init(&ps->positional_required);
597 piv_init(&ps->positional_optional);
598 pv_init(&ps->named_required);
599 piv_init(&ps->named_optional);
601 ps->rest_hash = NOT_IN_PAD;
604 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
605 assert(p->used <= p->size); \
606 if (p->used == p->size) { \
607 const size_t n = p->size / 2 * 3 + 1; \
608 Renew(p->data, n, B); \
611 return &p->data[p->used]; \
612 } static B (*N(VEC(B) *))
614 DEFVECTOR_EXTEND(pv_extend, Param);
615 DEFVECTOR_EXTEND(piv_extend, ParamInit);
617 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
620 F(aTHX_ &p->data[p->used]); \
625 } static void N(pTHX_ VEC(B) *)
627 static void p_clear(pTHX_ Param *p) {
629 p->padoff = NOT_IN_PAD;
633 static void pi_clear(pTHX_ ParamInit *pi) {
634 p_clear(aTHX_ &pi->param);
635 op_guard_clear(aTHX_ &pi->init);
638 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
639 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
641 static void ps_clear(pTHX_ ParamSpec *ps) {
642 p_clear(aTHX_ &ps->invocant);
644 pv_clear(aTHX_ &ps->positional_required);
645 piv_clear(aTHX_ &ps->positional_optional);
647 pv_clear(aTHX_ &ps->named_required);
648 piv_clear(aTHX_ &ps->named_optional);
650 p_clear(aTHX_ &ps->slurpy);
653 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
656 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
660 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
661 if (sv_eq(sv, ps->positional_required.data[i].name)) {
666 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
667 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
672 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
673 if (sv_eq(sv, ps->named_required.data[i].name)) {
678 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
679 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
687 static void ps_free_void(pTHX_ void *p) {
692 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
695 return SvTRUE(ks->shift) ? 1 : 0;
697 if (ps->invocant.name) {
700 n += ps->positional_required.used;
701 n += ps->named_required.used * 2;
705 static int args_max(const ParamSpec *ps) {
710 if (ps->invocant.name) {
713 n += ps->positional_required.used;
714 n += ps->positional_optional.used;
715 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
721 static size_t count_positional_params(const ParamSpec *ps) {
722 return ps->positional_required.used + ps->positional_optional.used;
725 static size_t count_named_params(const ParamSpec *ps) {
726 return ps->named_required.used + ps->named_optional.used;
729 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
734 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
740 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
742 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
752 PARAM_INVOCANT = 0x01,
756 static PADOFFSET parse_param(
759 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
760 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
770 c = lex_peek_unichar(0);
772 if (spec->flags & FLAG_TYPES_OK) {
776 Resource *expr_sentinel;
780 floor = start_subparse(FALSE, 0);
781 SAVEFREESV(PL_compcv);
782 CvSPECIAL_on(PL_compcv);
784 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
785 croak("In %"SVf": invalid type expression", SVfARG(declarator));
787 if (MY_OP_SLABBED(expr)) {
788 expr_sentinel = NULL;
790 expr_sentinel = sentinel_register(sen, expr, free_op_void);
794 c = lex_peek_unichar(0);
796 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
801 SvREFCNT_inc_simple_void(PL_compcv);
803 sentinel_disarm(expr_sentinel);
805 *ptype = my_eval(aTHX_ sen, floor, expr);
806 if (!SvROK(*ptype)) {
807 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
809 if (!sv_isobject(*ptype)) {
810 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
813 c = lex_peek_unichar(0);
814 } else if (MY_UNI_IDFIRST(c)) {
815 *ptype = parse_type(aTHX_ sen, declarator);
816 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
818 c = lex_peek_unichar(0);
826 *pflags |= PARAM_NAMED;
828 c = lex_peek_unichar(0);
832 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
835 if (!(c == '$' || c == '@' || c == '%')) {
836 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
844 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
845 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
847 sv_insert(name, 0, 0, &sigil, 1);
851 c = lex_peek_unichar(0);
858 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
859 param_spec->invocant.name = spec->shift;
860 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
863 op_guard_update(ginit, parse_termexpr(0));
866 c = lex_peek_unichar(0);
870 *pflags |= PARAM_INVOCANT;
873 } else if (c == ',') {
876 } else if (c != ')') {
878 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
880 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
883 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
886 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
887 OP *var = newOP(type, flags);
888 var->op_targ = padoff;
892 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
893 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
896 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
897 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
898 return newBINOP(OP_HELEM, 0, hv, k);
901 static OP *mkconstsv(pTHX_ SV *sv) {
902 return newSVOP(OP_CONST, 0, sv);
905 static OP *mkconstiv(pTHX_ IV i) {
906 return mkconstsv(aTHX_ newSViv(i));
909 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
910 return mkconstsv(aTHX_ newSVpv(p, n));
913 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
915 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
916 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
917 OP *chk, *err, *msg, *xcroak;
919 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
923 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
924 args = op_append_elem(
928 : my_var(aTHX_ 0, padoff)
930 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
933 msg->op_type = OP_ENTERSUB;
934 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
935 msg->op_flags |= OPf_STACKED;
938 msg = newBINOP(OP_CONCAT, 0, err, msg);
942 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
944 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
949 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
950 args = op_append_elem(
954 : my_var(aTHX_ 0, padoff)
956 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
959 chk->op_type = OP_ENTERSUB;
960 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
961 chk->op_flags |= OPf_STACKED;
964 chk = newLOGOP(OP_OR, 0, chk, xcroak);
968 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
969 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
972 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
986 char *p = SvPV(declarator, n);
987 char *q = memchr(p, ' ', n);
988 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
992 if (SvTRUE(kws->shift)) {
998 mPUSHs(newRV_noinc((SV *)newAV()));
999 mPUSHs(newRV_noinc((SV *)newAV()));
1000 mPUSHs(newRV_noinc((SV *)newAV()));
1001 mPUSHs(newRV_noinc((SV *)newAV()));
1006 if (ps->invocant.name) {
1007 PUSHs(ps->invocant.name);
1008 if (ps->invocant.type) {
1009 PUSHs(ps->invocant.type);
1022 lim = ps->positional_required.used;
1026 av_extend(av, (lim - 1) * 2);
1027 for (i = 0; i < lim; i++) {
1028 Param *cur = &ps->positional_required.data[i];
1029 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1030 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1034 mPUSHs(newRV_noinc((SV *)av));
1040 lim = ps->positional_optional.used;
1044 av_extend(av, (lim - 1) * 2);
1045 for (i = 0; i < lim; i++) {
1046 Param *cur = &ps->positional_optional.data[i].param;
1047 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1048 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1052 mPUSHs(newRV_noinc((SV *)av));
1058 lim = ps->named_required.used;
1062 av_extend(av, (lim - 1) * 2);
1063 for (i = 0; i < lim; i++) {
1064 Param *cur = &ps->named_required.data[i];
1065 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1066 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1070 mPUSHs(newRV_noinc((SV *)av));
1076 lim = ps->named_optional.used;
1080 av_extend(av, (lim - 1) * 2);
1081 for (i = 0; i < lim; i++) {
1082 Param *cur = &ps->named_optional.data[i].param;
1083 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1084 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1088 mPUSHs(newRV_noinc((SV *)av));
1091 if (ps->slurpy.name) {
1092 PUSHs(ps->slurpy.name);
1093 if (ps->slurpy.type) {
1094 PUSHs(ps->slurpy.type);
1106 call_pv(MY_PKG "::_register_info", G_VOID);
1112 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1113 ParamSpec *param_spec;
1118 OpGuard *prelude_sentinel;
1120 OpGuard *attrs_sentinel;
1122 unsigned builtin_attrs;
1125 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1126 if (lex_bufutf8()) {
1127 SvUTF8_on(declarator);
1136 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1138 if (PL_parser->expect != XSTATE) {
1139 /* bail out early so we don't predeclare $saw_name */
1140 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1143 sv_catpvs(declarator, " ");
1144 sv_catsv(declarator, saw_name);
1147 sv_eq_pvs(saw_name, "BEGIN") ||
1148 sv_eq_pvs(saw_name, "END") ||
1149 sv_eq_pvs(saw_name, "INIT") ||
1150 sv_eq_pvs(saw_name, "CHECK") ||
1151 sv_eq_pvs(saw_name, "UNITCHECK")
1153 builtin_attrs |= MY_ATTR_SPECIAL;
1157 } else if (!(spec->flags & FLAG_ANON_OK)) {
1158 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1160 sv_catpvs(declarator, " (anon)");
1163 /* we're a subroutine declaration */
1164 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1165 SAVEFREESV(PL_compcv);
1167 /* create outer block: '{' */
1168 save_ix = S_block_start(aTHX_ TRUE);
1170 /* initialize synthetic optree */
1171 Newx(prelude_sentinel, 1, OpGuard);
1172 op_guard_init(prelude_sentinel);
1173 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1178 c = lex_peek_unichar(0);
1180 OpGuard *init_sentinel;
1182 Newx(init_sentinel, 1, OpGuard);
1183 op_guard_init(init_sentinel);
1184 sentinel_register(sen, init_sentinel, free_op_guard_void);
1186 Newx(param_spec, 1, ParamSpec);
1187 ps_init(param_spec);
1188 sentinel_register(sen, param_spec, ps_free_void);
1190 lex_read_unichar(0);
1193 while ((c = lex_peek_unichar(0)) != ')') {
1199 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1203 sigil = SvPV_nolen(name)[0];
1205 /* internal consistency */
1206 if (flags & PARAM_NAMED) {
1207 if (flags & PARAM_INVOCANT) {
1208 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1211 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1213 } else if (flags & PARAM_INVOCANT) {
1214 if (init_sentinel->op) {
1215 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1218 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1220 } else if (sigil != '$' && init_sentinel->op) {
1221 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1224 /* external constraints */
1225 if (param_spec->slurpy.name) {
1226 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1229 assert(!init_sentinel->op);
1230 param_spec->slurpy.name = name;
1231 param_spec->slurpy.padoff = padoff;
1232 param_spec->slurpy.type = type;
1236 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1237 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));
1240 if (flags & PARAM_INVOCANT) {
1241 if (param_spec->invocant.name) {
1242 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1244 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1245 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1247 if (!(spec->flags & FLAG_INVOCANT)) {
1248 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1250 param_spec->invocant.name = name;
1251 param_spec->invocant.padoff = padoff;
1252 param_spec->invocant.type = type;
1256 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1257 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1260 if (ps_contains(aTHX_ param_spec, name)) {
1261 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1264 if (flags & PARAM_NAMED) {
1265 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1266 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1269 if (init_sentinel->op) {
1270 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1271 pi->param.name = name;
1272 pi->param.padoff = padoff;
1273 pi->param.type = type;
1274 pi->init = op_guard_transfer(init_sentinel);
1275 param_spec->named_optional.used++;
1279 if (param_spec->positional_optional.used) {
1280 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));
1283 p = pv_extend(¶m_spec->named_required);
1287 param_spec->named_required.used++;
1290 if (init_sentinel->op || param_spec->positional_optional.used) {
1291 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1292 pi->param.name = name;
1293 pi->param.padoff = padoff;
1294 pi->param.type = type;
1295 pi->init = op_guard_transfer(init_sentinel);
1296 param_spec->positional_optional.used++;
1298 Param *p = pv_extend(¶m_spec->positional_required);
1302 param_spec->positional_required.used++;
1307 lex_read_unichar(0);
1310 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1311 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1312 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1315 param_spec->invocant.name = spec->shift;
1316 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1322 c = lex_peek_unichar(0);
1324 lex_read_unichar(0);
1327 c = lex_peek_unichar(0);
1329 lex_stuff_pvs(":", 0);
1332 lex_read_unichar(0);
1333 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1334 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1336 my_check_prototype(aTHX_ sen, declarator, proto);
1338 c = lex_peek_unichar(0);
1339 if (!(c == ':' || c == '{')) {
1340 lex_stuff_pvs(":", 0);
1347 Newx(attrs_sentinel, 1, OpGuard);
1348 op_guard_init(attrs_sentinel);
1349 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
1351 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1353 /* kludge default attributes in */
1354 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1355 lex_stuff_sv(spec->attrs, 0);
1360 lex_read_unichar(0);
1362 c = lex_peek_unichar(0);
1367 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1372 c = lex_peek_unichar(0);
1375 if (sv_eq_pvs(attr, "lvalue")) {
1376 builtin_attrs |= MY_ATTR_LVALUE;
1378 } else if (sv_eq_pvs(attr, "method")) {
1379 builtin_attrs |= MY_ATTR_METHOD;
1384 lex_read_unichar(0);
1385 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1386 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1388 sv_catpvs(attr, "(");
1390 sv_catpvs(attr, ")");
1393 c = lex_peek_unichar(0);
1397 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
1401 lex_read_unichar(0);
1403 c = lex_peek_unichar(0);
1410 if (c != '{') /* '}' - hi, vim */ {
1411 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1414 /* surprise predeclaration! */
1415 if (saw_name && !(spec->flags & FLAG_RUNTIME)) {
1416 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1417 starts parsing the body */
1418 const I32 sub_ix = start_subparse(FALSE, 0);
1419 SAVEFREESV(PL_compcv);
1421 SvREFCNT_inc_simple_void(PL_compcv);
1425 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1426 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1432 if (builtin_attrs & MY_ATTR_LVALUE) {
1433 CvLVALUE_on(PL_compcv);
1435 if (builtin_attrs & MY_ATTR_METHOD) {
1436 CvMETHOD_on(PL_compcv);
1438 if (builtin_attrs & MY_ATTR_SPECIAL) {
1439 CvSPECIAL_on(PL_compcv);
1442 /* check number of arguments */
1443 if (spec->flags & FLAG_CHECK_NARGS) {
1446 amin = args_min(aTHX_ param_spec, spec);
1448 OP *chk, *cond, *err, *xcroak;
1450 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1454 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1462 xcroak = newCVREF(OPf_WANT_SCALAR,
1463 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1464 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1465 op_append_elem(OP_LIST, err, xcroak));
1467 cond = newBINOP(OP_LT, 0,
1468 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1469 mkconstiv(aTHX_ amin));
1470 chk = newLOGOP(OP_AND, 0, cond, err);
1472 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1475 amax = args_max(param_spec);
1477 OP *chk, *cond, *err, *xcroak;
1479 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1483 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1493 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1495 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1496 op_append_elem(OP_LIST, err, xcroak));
1500 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1501 mkconstiv(aTHX_ amax)
1503 chk = newLOGOP(OP_AND, 0, cond, err);
1505 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1508 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1509 OP *chk, *cond, *err, *xcroak;
1510 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1512 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1516 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1518 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1519 op_append_elem(OP_LIST, err, xcroak));
1521 cond = newBINOP(OP_GT, 0,
1522 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1523 mkconstiv(aTHX_ fixed));
1524 cond = newLOGOP(OP_AND, 0,
1526 newBINOP(OP_MODULO, 0,
1528 ? newBINOP(OP_SUBTRACT, 0,
1529 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1530 mkconstiv(aTHX_ fixed))
1531 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1532 mkconstiv(aTHX_ 2)));
1533 chk = newLOGOP(OP_AND, 0, cond, err);
1535 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1540 /* my $invocant = shift; */
1541 if (SvTRUE(spec->shift)) {
1546 OPf_MOD | (OPpLVAL_INTRO << 8),
1547 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1549 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1551 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1554 /* my $invocant = shift; */
1555 if (param_spec->invocant.name) {
1560 OPf_MOD | (OPpLVAL_INTRO << 8),
1561 param_spec->invocant.padoff
1563 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1565 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1567 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1568 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant))));
1572 /* my (...) = @_; */
1579 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1580 OP *const var = my_var(
1582 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1583 param_spec->positional_required.data[i].padoff
1585 lhs = op_append_elem(OP_LIST, lhs, var);
1588 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1589 OP *const var = my_var(
1591 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1592 param_spec->positional_optional.data[i].param.padoff
1594 lhs = op_append_elem(OP_LIST, lhs, var);
1604 * 1) no named params
1611 * => synthetic %{rest}
1612 * 2.2) slurpy is a hash
1614 * 2.3) slurpy is an array
1615 * => synthetic %{rest}
1616 * remember to declare array later
1619 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1620 if (!count_named_params(param_spec)) {
1621 if (param_spec->slurpy.name) {
1622 padoff = param_spec->slurpy.padoff;
1623 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1625 padoff = NOT_IN_PAD;
1628 } else if (slurpy_hash) {
1629 padoff = param_spec->slurpy.padoff;
1632 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1636 if (padoff != NOT_IN_PAD) {
1637 OP *const var = my_var_g(
1640 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1644 lhs = op_append_elem(OP_LIST, lhs, var);
1646 if (type == OP_PADHV) {
1647 param_spec->rest_hash = padoff;
1654 lhs->op_flags |= OPf_PARENS;
1655 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1657 op_guard_update(prelude_sentinel, op_append_list(
1658 OP_LINESEQ, prelude_sentinel->op,
1661 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1667 /* default positional arguments */
1674 req = param_spec->positional_required.used;
1675 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1676 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1681 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1682 mkconstiv(aTHX_ req + i + 1)
1685 var = my_var(aTHX_ 0, cur->param.padoff);
1687 nest = op_append_list(
1689 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
1699 op_guard_update(prelude_sentinel, op_append_list(
1700 OP_LINESEQ, prelude_sentinel->op,
1705 /* named parameters */
1706 if (count_named_params(param_spec)) {
1709 assert(param_spec->rest_hash != NOT_IN_PAD);
1711 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1712 Param *cur = ¶m_spec->named_required.data[i];
1714 char *p = SvPV(cur->name, n);
1717 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1719 if (spec->flags & FLAG_CHECK_NARGS) {
1722 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1723 var = newUNOP(OP_DELETE, 0, var);
1725 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1728 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1730 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1732 cond = newUNOP(OP_EXISTS, 0, cond);
1734 cond = newCONDOP(0, cond, var, xcroak);
1739 OPf_MOD | (OPpLVAL_INTRO << 8),
1742 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1744 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1747 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1748 ParamInit *cur = ¶m_spec->named_optional.data[i];
1750 char *p = SvPV(cur->param.name, n);
1753 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1754 var = newUNOP(OP_DELETE, 0, var);
1756 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1757 cond = newUNOP(OP_EXISTS, 0, cond);
1759 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
1763 OPf_MOD | (OPpLVAL_INTRO << 8),
1766 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1768 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1771 if (!param_spec->slurpy.name) {
1772 if (spec->flags & FLAG_CHECK_NARGS) {
1773 /* croak if %{rest} */
1774 OP *xcroak, *cond, *keys, *msg;
1776 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1777 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1779 OP *first, *mid, *last;
1783 mid = mkconstpvs(", ");
1784 mid->op_sibling = last;
1786 first = newOP(OP_PUSHMARK, 0);
1788 keys = newLISTOP(OP_JOIN, 0, first, mid);
1789 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1790 ((LISTOP *)keys)->op_last = last;
1793 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1794 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1798 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1800 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1802 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1803 xcroak = newCONDOP(0, cond, xcroak, NULL);
1805 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
1809 clear = newASSIGNOP(
1811 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1816 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1818 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1821 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1826 OPf_MOD | (OPpLVAL_INTRO << 8),
1827 param_spec->slurpy.padoff
1830 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1832 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1834 clear = newASSIGNOP(
1836 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1841 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1845 if (spec->flags & FLAG_CHECK_TARGS) {
1846 size_t i, lim, base;
1849 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1850 Param *cur = ¶m_spec->positional_required.data[i];
1853 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1858 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1859 Param *cur = ¶m_spec->positional_optional.data[i].param;
1862 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1867 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1868 Param *cur = ¶m_spec->named_required.data[i];
1871 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1876 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1877 Param *cur = ¶m_spec->named_optional.data[i].param;
1880 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1885 if (param_spec->slurpy.type) {
1886 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1887 OP *check, *list, *loop;
1889 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1891 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1892 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1894 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1895 list = newUNOP(OP_VALUES, 0, list);
1898 loop = newFOROP(0, NULL, list, check, NULL);
1900 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
1905 /* finally let perl parse the actual subroutine body */
1906 body = parse_block(0);
1908 /* add '();' to make function return nothing by default */
1909 /* (otherwise the invisible parameter initialization can "leak" into
1910 the return value: fun ($x) {}->("asdf", 0) == 2) */
1911 if (prelude_sentinel->op) {
1912 body = newSTATEOP(0, NULL, body);
1915 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1919 int runtime = spec->flags & FLAG_RUNTIME;
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 && !runtime ? 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);
1942 *pop = newOP(OP_NULL, 0);
1945 OP_ENTERSUB, OPf_STACKED,
1950 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1953 newSVOP(OP_ANONCODE, 0, (SV *)cv)
1956 newCVREF(0, newGVOP(OP_GV, 0, gv_fetchpvs(MY_PKG "::_defun", 0, SVt_PVCV)))
1960 return KEYWORD_PLUGIN_STMT;
1970 return KEYWORD_PLUGIN_EXPR;
1974 static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1977 const char *p, *kw_active;
1978 STRLEN kw_active_len;
1981 if (!(hints = GvHV(PL_hintgv))) {
1984 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1988 kw_active = SvPV(sv, kw_active_len);
1989 if (kw_active_len <= kw_len) {
1993 kw_is_utf8 = lex_bufutf8();
1997 (p = strchr(p, *kw_ptr)) &&
1998 p < kw_active + kw_active_len - kw_len;
2002 (p == kw_active || p[-1] == ' ') &&
2004 memcmp(kw_ptr, p, kw_len) == 0
2009 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
2012 spec->reify_type = 0;
2013 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
2014 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
2016 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
2017 const char *fk_ptr_; \
2021 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
2022 sv_catpvn(fk_sv_, PTR, LEN); \
2023 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
2024 fk_xlen_ = fk_len_; \
2026 fk_xlen_ = -fk_xlen_; \
2028 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
2029 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2033 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2034 spec->flags = SvIV(*psv);
2036 FETCH_HINTK_INTO(REIFY_, kw_ptr, kw_len, psv);
2037 spec->reify_type = SvIV(*psv);
2039 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2040 SvSetSV(spec->shift, *psv);
2042 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2043 SvSetSV(spec->attrs, *psv);
2045 #undef FETCH_HINTK_INTO
2052 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
2053 Sentinel sen = { NULL };
2057 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2058 /* scope was entered, 'sen' and 'spec' are initialized */
2059 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2063 /* not one of our keywords, no allocation done */
2064 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2070 #ifndef SvREFCNT_dec_NN
2071 #define SvREFCNT_dec_NN(SV) SvREFCNT_dec(SV)
2076 #define assert_(X) assert(X),
2082 #ifndef gv_method_changed
2083 #define gv_method_changed(GV) ( \
2084 assert_(isGV_with_GP(GV)) \
2086 ? (void)PL_sub_generation++ \
2087 : mro_method_changed_in(GvSTASH(GV)) \
2093 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2104 xcv = sv_2cv(sv, &hv, &gv, 0);
2105 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
2110 fp__defun(name, body)
2117 assert(SvTYPE(body) == SVt_PVCV);
2118 gv = gv_fetchsv(name, GV_ADDMULTI, SVt_PVCV);
2121 if (!GvCVGEN(gv) && (CvROOT(xcv) || CvXSUB(xcv)) && ckWARN(WARN_REDEFINE)) {
2122 warner(packWARN(WARN_REDEFINE), "Subroutine %"SVf" redefined", SVfARG(name));
2124 SvREFCNT_dec_NN(xcv);
2129 gv_method_changed(gv);
2131 GvCV_set(gv, (CV *)SvREFCNT_inc_simple_NN(body));
2137 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2139 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2140 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2141 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2142 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2143 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2144 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2145 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2146 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2147 newCONSTSUB(stash, "FLAG_RUNTIME", newSViv(FLAG_RUNTIME));
2148 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2149 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2150 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2151 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2152 newCONSTSUB(stash, "HINTK_REIFY_", newSVpvs(HINTK_REIFY_));
2154 next_keyword_plugin = PL_keyword_plugin;
2155 PL_keyword_plugin = my_keyword_plugin;