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:"
89 #define DEFSTRUCT(T) typedef struct T T; struct T
91 #define UV_BITS (sizeof (UV) * CHAR_BIT)
96 FLAG_DEFAULT_ARGS = 0x04,
97 FLAG_CHECK_NARGS = 0x08,
99 FLAG_NAMED_PARAMS = 0x20,
100 FLAG_TYPES_OK = 0x40,
101 FLAG_CHECK_TARGS = 0x80
110 static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
112 DEFSTRUCT(Resource) {
115 void (*destroy)(pTHX_ void *);
118 typedef Resource *Sentinel[1];
120 static void sentinel_clear_void(pTHX_ void *p) {
125 cur->destroy(aTHX_ cur->data);
127 cur->data = (void *)"no";
134 static Resource *sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
137 Newx(cur, 1, Resource);
139 cur->destroy = destroy;
146 static void sentinel_disarm(Resource *p) {
150 static void my_sv_refcnt_dec_void(pTHX_ void *p) {
155 static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
156 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
161 #if HAVE_PERL_VERSION(5, 17, 2)
162 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
164 #define MY_OP_SLABBED(O) 0
172 static void op_guard_init(OpGuard *p) {
174 p->needs_freed = FALSE;
177 static OpGuard op_guard_transfer(OpGuard *p) {
183 static OP *op_guard_relinquish(OpGuard *p) {
189 static void op_guard_update(OpGuard *p, OP *o) {
191 p->needs_freed = o && !MY_OP_SLABBED(o);
194 static void op_guard_clear(pTHX_ OpGuard *p) {
195 if (p->needs_freed) {
200 static void free_op_guard_void(pTHX_ void *vp) {
202 op_guard_clear(aTHX_ p);
206 static void free_op_void(pTHX_ void *vp) {
211 #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
213 static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
215 const char *sv_p = SvPV(sv, sv_len);
216 return memcmp(sv_p, p, n) == 0;
220 #include "padop_on_crack.c.inc"
223 static void my_require(pTHX_ const char *file) {
233 MY_ATTR_LVALUE = 0x01,
234 MY_ATTR_METHOD = 0x02,
235 MY_ATTR_SPECIAL = 0x04
238 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
239 char ds[UTF8_MAXBYTES + 1], *d;
240 d = (char *)uvchr_to_utf8((U8 *)ds, c);
244 sv_catpvn(sv, ds, d - ds);
248 #define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
249 #define MY_UNI_IDCONT(C) isALNUM_uni(C)
251 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
252 bool at_start, at_substart;
254 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
259 at_start = at_substart = TRUE;
260 c = lex_peek_unichar(0);
263 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
265 my_sv_cat_c(aTHX_ sv, c);
267 c = lex_peek_unichar(0);
268 } else if (allow_package && !at_substart && c == '\'') {
270 c = lex_peek_unichar(0);
271 if (!MY_UNI_IDFIRST(c)) {
272 lex_stuff_pvs("'", 0);
277 } else if (allow_package && (at_start || !at_substart) && c == ':') {
279 if (lex_peek_unichar(0) != ':') {
280 lex_stuff_pvs(":", 0);
284 c = lex_peek_unichar(0);
285 if (!MY_UNI_IDFIRST(c)) {
286 lex_stuff_pvs("::", 0);
297 return SvCUR(sv) ? sv : NULL;
300 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
305 start = CopLINE(PL_curcop);
307 sv = sentinel_mortalize(sen, newSVpvs(""));
314 c = lex_read_unichar(0);
316 CopLINE_set(PL_curcop, start);
321 c = lex_read_unichar(0);
323 CopLINE_set(PL_curcop, start);
326 if (keep_backslash || (c != '(' && c != ')')) {
329 } else if (c == '(') {
331 } else if (c == ')') {
338 my_sv_cat_c(aTHX_ sv, c);
344 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
345 char *start, *r, *w, *end;
349 start = SvPV(proto, len);
352 for (w = r = start; r < end; r++) {
358 SvCUR_set(proto, w - start);
362 if (!ckWARN(WARN_ILLEGALPROTO)) {
366 /* check for bad characters */
367 if (strspn(start, "$@%*;[]&\\_+") != len) {
368 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
370 packWARN(WARN_ILLEGALPROTO),
371 "Illegal character in prototype for %"SVf" : %s",
380 : pv_pretty(dsv, start, len, 60, NULL, NULL,
381 PERL_PV_ESCAPE_NONASCII
387 for (r = start; r < end; r++) {
391 packWARN(WARN_ILLEGALPROTO),
392 "Illegal character in prototype for %"SVf" : %s",
393 SVfARG(declarator), r
398 if (r[1] && !strchr(";@%", *r)) {
400 packWARN(WARN_ILLEGALPROTO),
401 "Illegal character after '_' in prototype for %"SVf" : %s",
402 SVfARG(declarator), r
412 packWARN(WARN_ILLEGALPROTO),
413 "prototype after '%c' for %"SVf": %s",
414 *r, SVfARG(declarator), r + 1
422 if (strchr("$@%&*", *r)) {
427 for (; r < end && *r != ']'; r++) {
428 if (!strchr("$@%&*", *r)) {
432 if (*r == ']' && r[-1] != '[') {
437 packWARN(WARN_ILLEGALPROTO),
438 "Illegal character after '\\' in prototype for %"SVf" : %s",
439 SVfARG(declarator), r
453 static SV *parse_type(pTHX_ Sentinel, const SV *);
455 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
459 t = my_scan_word(aTHX_ sen, TRUE);
462 c = lex_peek_unichar(0);
468 my_sv_cat_c(aTHX_ t, c);
470 u = parse_type(aTHX_ sen, declarator);
473 c = lex_peek_unichar(0);
475 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
480 my_sv_cat_c(aTHX_ t, c);
486 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
490 t = parse_type_paramd(aTHX_ sen, declarator);
492 c = lex_peek_unichar(0);
499 my_sv_cat_c(aTHX_ t, c);
500 u = parse_type_paramd(aTHX_ sen, declarator);
503 c = lex_peek_unichar(0);
509 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
514 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
524 n = call_pv("Moose::Util::TypeConstraints::find_or_create_isa_type_constraint", G_SCALAR);
528 /* don't warn about n being unused if assert() is compiled out */
531 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
538 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
551 DEFSTRUCT(ParamInit) {
556 #define VEC(B) B ## _Vec
558 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
564 DEFVECTOR(ParamInit);
566 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
569 Newx(p->data, p->size, B); \
570 } static void N(VEC(B) *)
572 DEFSTRUCT(ParamSpec) {
574 VEC(Param) positional_required;
575 VEC(ParamInit) positional_optional;
576 VEC(Param) named_required;
577 VEC(ParamInit) named_optional;
582 DEFVECTOR_INIT(pv_init, Param);
583 DEFVECTOR_INIT(piv_init, ParamInit);
585 static void p_init(Param *p) {
587 p->padoff = NOT_IN_PAD;
591 static void ps_init(ParamSpec *ps) {
592 p_init(&ps->invocant);
593 pv_init(&ps->positional_required);
594 piv_init(&ps->positional_optional);
595 pv_init(&ps->named_required);
596 piv_init(&ps->named_optional);
598 ps->rest_hash = NOT_IN_PAD;
601 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
602 assert(p->used <= p->size); \
603 if (p->used == p->size) { \
604 const size_t n = p->size / 2 * 3 + 1; \
605 Renew(p->data, n, B); \
608 return &p->data[p->used]; \
609 } static B (*N(VEC(B) *))
611 DEFVECTOR_EXTEND(pv_extend, Param);
612 DEFVECTOR_EXTEND(piv_extend, ParamInit);
614 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
617 F(aTHX_ &p->data[p->used]); \
622 } static void N(pTHX_ VEC(B) *)
624 static void p_clear(pTHX_ Param *p) {
626 p->padoff = NOT_IN_PAD;
630 static void pi_clear(pTHX_ ParamInit *pi) {
631 p_clear(aTHX_ &pi->param);
632 op_guard_clear(aTHX_ &pi->init);
635 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
636 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
638 static void ps_clear(pTHX_ ParamSpec *ps) {
639 p_clear(aTHX_ &ps->invocant);
641 pv_clear(aTHX_ &ps->positional_required);
642 piv_clear(aTHX_ &ps->positional_optional);
644 pv_clear(aTHX_ &ps->named_required);
645 piv_clear(aTHX_ &ps->named_optional);
647 p_clear(aTHX_ &ps->slurpy);
650 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
653 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
657 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
658 if (sv_eq(sv, ps->positional_required.data[i].name)) {
663 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
664 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
669 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
670 if (sv_eq(sv, ps->named_required.data[i].name)) {
675 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
676 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
684 static void ps_free_void(pTHX_ void *p) {
689 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
692 return SvTRUE(ks->shift) ? 1 : 0;
694 if (ps->invocant.name) {
697 n += ps->positional_required.used;
698 n += ps->named_required.used * 2;
702 static int args_max(const ParamSpec *ps) {
707 if (ps->invocant.name) {
710 n += ps->positional_required.used;
711 n += ps->positional_optional.used;
712 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
718 static size_t count_positional_params(const ParamSpec *ps) {
719 return ps->positional_required.used + ps->positional_optional.used;
722 static size_t count_named_params(const ParamSpec *ps) {
723 return ps->named_required.used + ps->named_optional.used;
726 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
731 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
737 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
739 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
749 PARAM_INVOCANT = 0x01,
753 static PADOFFSET parse_param(
756 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
757 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
767 c = lex_peek_unichar(0);
769 if (spec->flags & FLAG_TYPES_OK) {
773 Resource *expr_sentinel;
777 floor = start_subparse(FALSE, 0);
778 SAVEFREESV(PL_compcv);
779 CvSPECIAL_on(PL_compcv);
781 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
782 croak("In %"SVf": invalid type expression", SVfARG(declarator));
784 if (MY_OP_SLABBED(expr)) {
785 expr_sentinel = NULL;
787 expr_sentinel = sentinel_register(sen, expr, free_op_void);
791 c = lex_peek_unichar(0);
793 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
798 SvREFCNT_inc_simple_void(PL_compcv);
800 sentinel_disarm(expr_sentinel);
802 *ptype = my_eval(aTHX_ sen, floor, expr);
803 if (!SvROK(*ptype)) {
804 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
806 if (!sv_isobject(*ptype)) {
807 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
810 c = lex_peek_unichar(0);
811 } else if (MY_UNI_IDFIRST(c)) {
812 *ptype = parse_type(aTHX_ sen, declarator);
813 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
815 c = lex_peek_unichar(0);
823 *pflags |= PARAM_NAMED;
825 c = lex_peek_unichar(0);
829 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
832 if (!(c == '$' || c == '@' || c == '%')) {
833 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
841 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
842 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
844 sv_insert(name, 0, 0, &sigil, 1);
848 c = lex_peek_unichar(0);
855 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
856 param_spec->invocant.name = spec->shift;
857 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
860 op_guard_update(ginit, parse_termexpr(0));
863 c = lex_peek_unichar(0);
867 *pflags |= PARAM_INVOCANT;
870 } else if (c == ',') {
873 } else if (c != ')') {
875 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
877 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
880 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
883 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
884 OP *var = newOP(type, flags);
885 var->op_targ = padoff;
889 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
890 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
893 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
894 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
895 return newBINOP(OP_HELEM, 0, hv, k);
898 static OP *mkconstsv(pTHX_ SV *sv) {
899 return newSVOP(OP_CONST, 0, sv);
902 static OP *mkconstiv(pTHX_ IV i) {
903 return mkconstsv(aTHX_ newSViv(i));
906 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
907 return mkconstsv(aTHX_ newSVpv(p, n));
910 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
912 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
913 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
914 OP *chk, *err, *msg, *xcroak;
916 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
920 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
921 args = op_append_elem(
925 : my_var(aTHX_ 0, padoff)
927 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
930 msg->op_type = OP_ENTERSUB;
931 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
932 msg->op_flags |= OPf_STACKED;
935 msg = newBINOP(OP_CONCAT, 0, err, msg);
939 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
941 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
946 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
947 args = op_append_elem(
951 : my_var(aTHX_ 0, padoff)
953 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
956 chk->op_type = OP_ENTERSUB;
957 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
958 chk->op_flags |= OPf_STACKED;
961 chk = newLOGOP(OP_OR, 0, chk, xcroak);
965 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
966 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
969 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
983 char *p = SvPV(declarator, n);
984 char *q = memchr(p, ' ', n);
985 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
989 if (SvTRUE(kws->shift)) {
995 mPUSHs(newRV_noinc((SV *)newAV()));
996 mPUSHs(newRV_noinc((SV *)newAV()));
997 mPUSHs(newRV_noinc((SV *)newAV()));
998 mPUSHs(newRV_noinc((SV *)newAV()));
1003 if (ps->invocant.name) {
1004 PUSHs(ps->invocant.name);
1005 if (ps->invocant.type) {
1006 PUSHs(ps->invocant.type);
1019 lim = ps->positional_required.used;
1023 av_extend(av, (lim - 1) * 2);
1024 for (i = 0; i < lim; i++) {
1025 Param *cur = &ps->positional_required.data[i];
1026 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1027 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1031 mPUSHs(newRV_noinc((SV *)av));
1037 lim = ps->positional_optional.used;
1041 av_extend(av, (lim - 1) * 2);
1042 for (i = 0; i < lim; i++) {
1043 Param *cur = &ps->positional_optional.data[i].param;
1044 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1045 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1049 mPUSHs(newRV_noinc((SV *)av));
1055 lim = ps->named_required.used;
1059 av_extend(av, (lim - 1) * 2);
1060 for (i = 0; i < lim; i++) {
1061 Param *cur = &ps->named_required.data[i];
1062 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1063 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1067 mPUSHs(newRV_noinc((SV *)av));
1073 lim = ps->named_optional.used;
1077 av_extend(av, (lim - 1) * 2);
1078 for (i = 0; i < lim; i++) {
1079 Param *cur = &ps->named_optional.data[i].param;
1080 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1081 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1085 mPUSHs(newRV_noinc((SV *)av));
1088 if (ps->slurpy.name) {
1089 PUSHs(ps->slurpy.name);
1090 if (ps->slurpy.type) {
1091 PUSHs(ps->slurpy.type);
1103 call_pv(MY_PKG "::_register_info", G_VOID);
1109 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1110 ParamSpec *param_spec;
1115 OpGuard *prelude_sentinel;
1117 OpGuard *attrs_sentinel;
1119 unsigned builtin_attrs;
1122 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1123 if (lex_bufutf8()) {
1124 SvUTF8_on(declarator);
1133 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1135 if (PL_parser->expect != XSTATE) {
1136 /* bail out early so we don't predeclare $saw_name */
1137 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1140 sv_catpvs(declarator, " ");
1141 sv_catsv(declarator, saw_name);
1144 sv_eq_pvs(saw_name, "BEGIN") ||
1145 sv_eq_pvs(saw_name, "END") ||
1146 sv_eq_pvs(saw_name, "INIT") ||
1147 sv_eq_pvs(saw_name, "CHECK") ||
1148 sv_eq_pvs(saw_name, "UNITCHECK")
1150 builtin_attrs |= MY_ATTR_SPECIAL;
1154 } else if (!(spec->flags & FLAG_ANON_OK)) {
1155 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1157 sv_catpvs(declarator, " (anon)");
1160 /* we're a subroutine declaration */
1161 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1162 SAVEFREESV(PL_compcv);
1164 /* create outer block: '{' */
1165 save_ix = S_block_start(aTHX_ TRUE);
1167 /* initialize synthetic optree */
1168 Newx(prelude_sentinel, 1, OpGuard);
1169 op_guard_init(prelude_sentinel);
1170 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1175 c = lex_peek_unichar(0);
1177 OpGuard *init_sentinel;
1179 Newx(init_sentinel, 1, OpGuard);
1180 op_guard_init(init_sentinel);
1181 sentinel_register(sen, init_sentinel, free_op_guard_void);
1183 Newx(param_spec, 1, ParamSpec);
1184 ps_init(param_spec);
1185 sentinel_register(sen, param_spec, ps_free_void);
1187 lex_read_unichar(0);
1190 while ((c = lex_peek_unichar(0)) != ')') {
1196 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1200 sigil = SvPV_nolen(name)[0];
1202 /* internal consistency */
1203 if (flags & PARAM_NAMED) {
1204 if (flags & PARAM_INVOCANT) {
1205 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1208 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1210 } else if (flags & PARAM_INVOCANT) {
1211 if (init_sentinel->op) {
1212 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1215 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1217 } else if (sigil != '$' && init_sentinel->op) {
1218 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1221 /* external constraints */
1222 if (param_spec->slurpy.name) {
1223 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1226 assert(!init_sentinel->op);
1227 param_spec->slurpy.name = name;
1228 param_spec->slurpy.padoff = padoff;
1229 param_spec->slurpy.type = type;
1233 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1234 croak("In %"SVf": positional parameter %"SVf" can't appear after named parameter %"SVf"", SVfARG(declarator), SVfARG(name), SVfARG((param_spec->named_required.used ? param_spec->named_required.data[0] : param_spec->named_optional.data[0].param).name));
1237 if (flags & PARAM_INVOCANT) {
1238 if (param_spec->invocant.name) {
1239 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1241 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1242 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1244 if (!(spec->flags & FLAG_INVOCANT)) {
1245 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1247 param_spec->invocant.name = name;
1248 param_spec->invocant.padoff = padoff;
1249 param_spec->invocant.type = type;
1253 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1254 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1257 if (ps_contains(aTHX_ param_spec, name)) {
1258 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1261 if (flags & PARAM_NAMED) {
1262 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1263 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1266 if (init_sentinel->op) {
1267 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1268 pi->param.name = name;
1269 pi->param.padoff = padoff;
1270 pi->param.type = type;
1271 pi->init = op_guard_transfer(init_sentinel);
1272 param_spec->named_optional.used++;
1276 if (param_spec->positional_optional.used) {
1277 croak("In %"SVf": can't combine optional positional (%"SVf") and required named (%"SVf") parameters", SVfARG(declarator), SVfARG(param_spec->positional_optional.data[0].param.name), SVfARG(name));
1280 p = pv_extend(¶m_spec->named_required);
1284 param_spec->named_required.used++;
1287 if (init_sentinel->op || param_spec->positional_optional.used) {
1288 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1289 pi->param.name = name;
1290 pi->param.padoff = padoff;
1291 pi->param.type = type;
1292 pi->init = op_guard_transfer(init_sentinel);
1293 param_spec->positional_optional.used++;
1295 Param *p = pv_extend(¶m_spec->positional_required);
1299 param_spec->positional_required.used++;
1304 lex_read_unichar(0);
1307 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1308 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1309 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1312 param_spec->invocant.name = spec->shift;
1313 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1319 c = lex_peek_unichar(0);
1321 lex_read_unichar(0);
1324 c = lex_peek_unichar(0);
1326 lex_stuff_pvs(":", 0);
1329 lex_read_unichar(0);
1330 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1331 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1333 my_check_prototype(aTHX_ sen, declarator, proto);
1335 c = lex_peek_unichar(0);
1336 if (!(c == ':' || c == '{')) {
1337 lex_stuff_pvs(":", 0);
1344 Newx(attrs_sentinel, 1, OpGuard);
1345 op_guard_init(attrs_sentinel);
1346 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
1348 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1350 /* kludge default attributes in */
1351 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1352 lex_stuff_sv(spec->attrs, 0);
1357 lex_read_unichar(0);
1359 c = lex_peek_unichar(0);
1364 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1369 c = lex_peek_unichar(0);
1372 if (sv_eq_pvs(attr, "lvalue")) {
1373 builtin_attrs |= MY_ATTR_LVALUE;
1375 } else if (sv_eq_pvs(attr, "method")) {
1376 builtin_attrs |= MY_ATTR_METHOD;
1381 lex_read_unichar(0);
1382 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1383 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1385 sv_catpvs(attr, "(");
1387 sv_catpvs(attr, ")");
1390 c = lex_peek_unichar(0);
1394 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
1398 lex_read_unichar(0);
1400 c = lex_peek_unichar(0);
1407 if (c != '{') /* '}' - hi, vim */ {
1408 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1411 /* surprise predeclaration! */
1413 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1414 starts parsing the body */
1415 const I32 sub_ix = start_subparse(FALSE, 0);
1416 SAVEFREESV(PL_compcv);
1418 SvREFCNT_inc_simple_void(PL_compcv);
1422 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1423 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1429 if (builtin_attrs & MY_ATTR_LVALUE) {
1430 CvLVALUE_on(PL_compcv);
1432 if (builtin_attrs & MY_ATTR_METHOD) {
1433 CvMETHOD_on(PL_compcv);
1435 if (builtin_attrs & MY_ATTR_SPECIAL) {
1436 CvSPECIAL_on(PL_compcv);
1439 /* check number of arguments */
1440 if (spec->flags & FLAG_CHECK_NARGS) {
1443 amin = args_min(aTHX_ param_spec, spec);
1445 OP *chk, *cond, *err, *xcroak;
1447 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1451 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1459 xcroak = newCVREF(OPf_WANT_SCALAR,
1460 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1461 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1462 op_append_elem(OP_LIST, err, xcroak));
1464 cond = newBINOP(OP_LT, 0,
1465 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1466 mkconstiv(aTHX_ amin));
1467 chk = newLOGOP(OP_AND, 0, cond, err);
1469 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1472 amax = args_max(param_spec);
1474 OP *chk, *cond, *err, *xcroak;
1476 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1480 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1490 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1492 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1493 op_append_elem(OP_LIST, err, xcroak));
1497 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1498 mkconstiv(aTHX_ amax)
1500 chk = newLOGOP(OP_AND, 0, cond, err);
1502 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1505 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1506 OP *chk, *cond, *err, *xcroak;
1507 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1509 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1513 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1515 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1516 op_append_elem(OP_LIST, err, xcroak));
1518 cond = newBINOP(OP_GT, 0,
1519 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1520 mkconstiv(aTHX_ fixed));
1521 cond = newLOGOP(OP_AND, 0,
1523 newBINOP(OP_MODULO, 0,
1525 ? newBINOP(OP_SUBTRACT, 0,
1526 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1527 mkconstiv(aTHX_ fixed))
1528 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1529 mkconstiv(aTHX_ 2)));
1530 chk = newLOGOP(OP_AND, 0, cond, err);
1532 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1537 /* my $invocant = shift; */
1538 if (SvTRUE(spec->shift)) {
1543 OPf_MOD | (OPpLVAL_INTRO << 8),
1544 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1546 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1548 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1551 /* my $invocant = shift; */
1552 if (param_spec->invocant.name) {
1557 OPf_MOD | (OPpLVAL_INTRO << 8),
1558 param_spec->invocant.padoff
1560 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1562 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1564 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1565 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant))));
1569 /* my (...) = @_; */
1576 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1577 OP *const var = my_var(
1579 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1580 param_spec->positional_required.data[i].padoff
1582 lhs = op_append_elem(OP_LIST, lhs, var);
1585 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1586 OP *const var = my_var(
1588 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1589 param_spec->positional_optional.data[i].param.padoff
1591 lhs = op_append_elem(OP_LIST, lhs, var);
1601 * 1) no named params
1608 * => synthetic %{rest}
1609 * 2.2) slurpy is a hash
1611 * 2.3) slurpy is an array
1612 * => synthetic %{rest}
1613 * remember to declare array later
1616 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1617 if (!count_named_params(param_spec)) {
1618 if (param_spec->slurpy.name) {
1619 padoff = param_spec->slurpy.padoff;
1620 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1622 padoff = NOT_IN_PAD;
1625 } else if (slurpy_hash) {
1626 padoff = param_spec->slurpy.padoff;
1629 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1633 if (padoff != NOT_IN_PAD) {
1634 OP *const var = my_var_g(
1637 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1641 lhs = op_append_elem(OP_LIST, lhs, var);
1643 if (type == OP_PADHV) {
1644 param_spec->rest_hash = padoff;
1651 lhs->op_flags |= OPf_PARENS;
1652 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1654 op_guard_update(prelude_sentinel, op_append_list(
1655 OP_LINESEQ, prelude_sentinel->op,
1658 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1664 /* default positional arguments */
1671 req = param_spec->positional_required.used;
1672 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1673 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1678 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1679 mkconstiv(aTHX_ req + i + 1)
1682 var = my_var(aTHX_ 0, cur->param.padoff);
1684 nest = op_append_list(
1686 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
1696 op_guard_update(prelude_sentinel, op_append_list(
1697 OP_LINESEQ, prelude_sentinel->op,
1702 /* named parameters */
1703 if (count_named_params(param_spec)) {
1706 assert(param_spec->rest_hash != NOT_IN_PAD);
1708 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1709 Param *cur = ¶m_spec->named_required.data[i];
1711 char *p = SvPV(cur->name, n);
1714 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1716 if (spec->flags & FLAG_CHECK_NARGS) {
1719 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1720 var = newUNOP(OP_DELETE, 0, var);
1722 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1725 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1727 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1729 cond = newUNOP(OP_EXISTS, 0, cond);
1731 cond = newCONDOP(0, cond, var, xcroak);
1736 OPf_MOD | (OPpLVAL_INTRO << 8),
1739 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1741 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1744 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1745 ParamInit *cur = ¶m_spec->named_optional.data[i];
1747 char *p = SvPV(cur->param.name, n);
1750 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1751 var = newUNOP(OP_DELETE, 0, var);
1753 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1754 cond = newUNOP(OP_EXISTS, 0, cond);
1756 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
1760 OPf_MOD | (OPpLVAL_INTRO << 8),
1763 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1765 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1768 if (!param_spec->slurpy.name) {
1769 if (spec->flags & FLAG_CHECK_NARGS) {
1770 /* croak if %{rest} */
1771 OP *xcroak, *cond, *keys, *msg;
1773 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1774 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1776 OP *first, *mid, *last;
1780 mid = mkconstpvs(", ");
1781 mid->op_sibling = last;
1783 first = newOP(OP_PUSHMARK, 0);
1785 keys = newLISTOP(OP_JOIN, 0, first, mid);
1786 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1787 ((LISTOP *)keys)->op_last = last;
1790 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1791 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1795 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1797 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1799 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1800 xcroak = newCONDOP(0, cond, xcroak, NULL);
1802 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
1806 clear = newASSIGNOP(
1808 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1813 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1815 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1818 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1823 OPf_MOD | (OPpLVAL_INTRO << 8),
1824 param_spec->slurpy.padoff
1827 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1829 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1831 clear = newASSIGNOP(
1833 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1838 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1842 if (spec->flags & FLAG_CHECK_TARGS) {
1843 size_t i, lim, base;
1846 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1847 Param *cur = ¶m_spec->positional_required.data[i];
1850 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1855 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1856 Param *cur = ¶m_spec->positional_optional.data[i].param;
1859 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1864 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1865 Param *cur = ¶m_spec->named_required.data[i];
1868 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1873 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1874 Param *cur = ¶m_spec->named_optional.data[i].param;
1877 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1882 if (param_spec->slurpy.type) {
1883 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1884 OP *check, *list, *loop;
1886 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1888 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1889 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1891 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1892 list = newUNOP(OP_VALUES, 0, list);
1895 loop = newFOROP(0, NULL, list, check, NULL);
1897 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
1902 /* finally let perl parse the actual subroutine body */
1903 body = parse_block(0);
1905 /* add '();' to make function return nothing by default */
1906 /* (otherwise the invisible parameter initialization can "leak" into
1907 the return value: fun ($x) {}->("asdf", 0) == 2) */
1908 if (prelude_sentinel->op) {
1909 body = newSTATEOP(0, NULL, body);
1912 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1917 OP *const attrs = op_guard_relinquish(attrs_sentinel);
1919 SvREFCNT_inc_simple_void(PL_compcv);
1921 /* close outer block: '}' */
1922 S_block_end(aTHX_ save_ix, body);
1926 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
1927 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1933 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1937 *pop = newOP(OP_NULL, 0);
1938 return KEYWORD_PLUGIN_STMT;
1948 return KEYWORD_PLUGIN_EXPR;
1952 static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1955 const char *p, *kw_active;
1956 STRLEN kw_active_len;
1959 if (!(hints = GvHV(PL_hintgv))) {
1962 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1966 kw_active = SvPV(sv, kw_active_len);
1967 if (kw_active_len <= kw_len) {
1971 kw_is_utf8 = lex_bufutf8();
1975 (p = strchr(p, *kw_ptr)) &&
1976 p < kw_active + kw_active_len - kw_len;
1980 (p == kw_active || p[-1] == ' ') &&
1982 memcmp(kw_ptr, p, kw_len) == 0
1987 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1990 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1991 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1993 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1994 const char *fk_ptr_; \
1998 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
1999 sv_catpvn(fk_sv_, PTR, LEN); \
2000 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
2001 fk_xlen_ = fk_len_; \
2003 fk_xlen_ = -fk_xlen_; \
2005 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
2006 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2010 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2011 spec->flags = SvIV(*psv);
2013 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2014 SvSetSV(spec->shift, *psv);
2016 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2017 SvSetSV(spec->attrs, *psv);
2019 #undef FETCH_HINTK_INTO
2026 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
2027 Sentinel sen = { NULL };
2031 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2032 /* scope was entered, 'sen' and 'spec' are initialized */
2033 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2037 /* not one of our keywords, no allocation done */
2038 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2046 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2057 xcv = sv_2cv(sv, &hv, &gv, 0);
2058 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
2064 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2066 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2067 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2068 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2069 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2070 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2071 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2072 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2073 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2074 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2075 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2076 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2077 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2079 next_keyword_plugin = PL_keyword_plugin;
2080 PL_keyword_plugin = my_keyword_plugin;