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);
160 static int kw_flags(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
163 const char *p, *kw_active;
164 STRLEN kw_active_len;
167 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
168 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
170 if (!(hints = GvHV(PL_hintgv))) {
173 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
177 kw_active = SvPV(sv, kw_active_len);
178 if (kw_active_len <= kw_len) {
183 (p = strchr(p, *kw_ptr)) &&
184 p < kw_active + kw_active_len - kw_len;
188 (p == kw_active || p[-1] == ' ') &&
190 memcmp(kw_ptr, p, kw_len) == 0
193 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
194 const char *fk_ptr_; \
197 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
198 sv_catpvn(fk_sv_, PTR, LEN); \
199 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
200 if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
201 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
205 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
206 spec->flags = SvIV(*psv);
208 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
209 SvSetSV(spec->shift, *psv);
211 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
212 SvSetSV(spec->attrs, *psv);
214 #undef FETCH_HINTK_INTO
222 #if HAVE_PERL_VERSION(5, 17, 2)
223 #define MY_OP_SLABBED(O) ((O)->op_slabbed)
225 #define MY_OP_SLABBED(O) 0
233 static void op_guard_init(OpGuard *p) {
235 p->needs_freed = FALSE;
238 static OpGuard op_guard_transfer(OpGuard *p) {
244 static OP *op_guard_relinquish(OpGuard *p) {
250 static void op_guard_update(OpGuard *p, OP *o) {
252 p->needs_freed = o && !MY_OP_SLABBED(o);
255 static void op_guard_clear(pTHX_ OpGuard *p) {
256 if (p->needs_freed) {
261 static void free_op_guard_void(pTHX_ void *vp) {
263 op_guard_clear(aTHX_ p);
267 static void free_op_void(pTHX_ void *vp) {
272 #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
274 static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
276 const char *sv_p = SvPV(sv, sv_len);
277 return memcmp(sv_p, p, n) == 0;
281 #include "padop_on_crack.c.inc"
285 MY_ATTR_LVALUE = 0x01,
286 MY_ATTR_METHOD = 0x02,
287 MY_ATTR_SPECIAL = 0x04
290 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
291 char ds[UTF8_MAXBYTES + 1], *d;
292 d = (char *)uvchr_to_utf8((U8 *)ds, c);
296 sv_catpvn(sv, ds, d - ds);
300 #define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
301 #define MY_UNI_IDCONT(C) isALNUM_uni(C)
303 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
304 bool at_start, at_substart;
306 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
311 at_start = at_substart = TRUE;
312 c = lex_peek_unichar(0);
315 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
317 my_sv_cat_c(aTHX_ sv, c);
319 c = lex_peek_unichar(0);
320 } else if (allow_package && !at_substart && c == '\'') {
322 c = lex_peek_unichar(0);
323 if (!MY_UNI_IDFIRST(c)) {
324 lex_stuff_pvs("'", 0);
329 } else if (allow_package && (at_start || !at_substart) && c == ':') {
331 if (lex_peek_unichar(0) != ':') {
332 lex_stuff_pvs(":", 0);
336 c = lex_peek_unichar(0);
337 if (!MY_UNI_IDFIRST(c)) {
338 lex_stuff_pvs("::", 0);
349 return SvCUR(sv) ? sv : NULL;
352 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
357 start = CopLINE(PL_curcop);
359 sv = sentinel_mortalize(sen, newSVpvs(""));
366 c = lex_read_unichar(0);
368 CopLINE_set(PL_curcop, start);
373 c = lex_read_unichar(0);
375 CopLINE_set(PL_curcop, start);
378 if (keep_backslash || (c != '(' && c != ')')) {
381 } else if (c == '(') {
383 } else if (c == ')') {
390 my_sv_cat_c(aTHX_ sv, c);
396 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
397 char *start, *r, *w, *end;
401 start = SvPV(proto, len);
404 for (w = r = start; r < end; r++) {
410 SvCUR_set(proto, w - start);
414 if (!ckWARN(WARN_ILLEGALPROTO)) {
418 /* check for bad characters */
419 if (strspn(start, "$@%*;[]&\\_+") != len) {
420 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
422 packWARN(WARN_ILLEGALPROTO),
423 "Illegal character in prototype for %"SVf" : %s",
432 : pv_pretty(dsv, start, len, 60, NULL, NULL,
433 PERL_PV_ESCAPE_NONASCII
439 for (r = start; r < end; r++) {
443 packWARN(WARN_ILLEGALPROTO),
444 "Illegal character in prototype for %"SVf" : %s",
445 SVfARG(declarator), r
450 if (r[1] && !strchr(";@%", *r)) {
452 packWARN(WARN_ILLEGALPROTO),
453 "Illegal character after '_' in prototype for %"SVf" : %s",
454 SVfARG(declarator), r
464 packWARN(WARN_ILLEGALPROTO),
465 "prototype after '%c' for %"SVf": %s",
466 *r, SVfARG(declarator), r + 1
474 if (strchr("$@%&*", *r)) {
479 for (; r < end && *r != ']'; r++) {
480 if (!strchr("$@%&*", *r)) {
484 if (*r == ']' && r[-1] != '[') {
489 packWARN(WARN_ILLEGALPROTO),
490 "Illegal character after '\\' in prototype for %"SVf" : %s",
491 SVfARG(declarator), r
505 static SV *parse_type(pTHX_ Sentinel, const SV *);
507 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
511 t = my_scan_word(aTHX_ sen, TRUE);
514 c = lex_peek_unichar(0);
520 my_sv_cat_c(aTHX_ t, c);
522 u = parse_type(aTHX_ sen, declarator);
525 c = lex_peek_unichar(0);
527 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
532 my_sv_cat_c(aTHX_ t, c);
538 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
542 t = parse_type_paramd(aTHX_ sen, declarator);
544 c = lex_peek_unichar(0);
551 my_sv_cat_c(aTHX_ t, c);
552 u = parse_type_paramd(aTHX_ sen, declarator);
555 c = lex_peek_unichar(0);
561 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
574 n = call_pv("Moose::Util::TypeConstraints::find_or_create_isa_type_constraint", G_SCALAR);
578 /* don't warn about n being unused if assert() is compiled out */
581 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
588 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
601 DEFSTRUCT(ParamInit) {
606 #define VEC(B) B ## _Vec
608 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
614 DEFVECTOR(ParamInit);
616 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
619 Newx(p->data, p->size, B); \
620 } static void N(VEC(B) *)
622 DEFSTRUCT(ParamSpec) {
624 VEC(Param) positional_required;
625 VEC(ParamInit) positional_optional;
626 VEC(Param) named_required;
627 VEC(ParamInit) named_optional;
632 DEFVECTOR_INIT(pv_init, Param);
633 DEFVECTOR_INIT(piv_init, ParamInit);
635 static void p_init(Param *p) {
637 p->padoff = NOT_IN_PAD;
641 static void ps_init(ParamSpec *ps) {
642 p_init(&ps->invocant);
643 pv_init(&ps->positional_required);
644 piv_init(&ps->positional_optional);
645 pv_init(&ps->named_required);
646 piv_init(&ps->named_optional);
648 ps->rest_hash = NOT_IN_PAD;
651 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
652 assert(p->used <= p->size); \
653 if (p->used == p->size) { \
654 const size_t n = p->size / 2 * 3 + 1; \
655 Renew(p->data, n, B); \
658 return &p->data[p->used]; \
659 } static B (*N(VEC(B) *))
661 DEFVECTOR_EXTEND(pv_extend, Param);
662 DEFVECTOR_EXTEND(piv_extend, ParamInit);
664 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
667 F(aTHX_ &p->data[p->used]); \
672 } static void N(pTHX_ VEC(B) *)
674 static void p_clear(pTHX_ Param *p) {
676 p->padoff = NOT_IN_PAD;
680 static void pi_clear(pTHX_ ParamInit *pi) {
681 p_clear(aTHX_ &pi->param);
682 op_guard_clear(aTHX_ &pi->init);
685 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
686 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
688 static void ps_clear(pTHX_ ParamSpec *ps) {
689 p_clear(aTHX_ &ps->invocant);
691 pv_clear(aTHX_ &ps->positional_required);
692 piv_clear(aTHX_ &ps->positional_optional);
694 pv_clear(aTHX_ &ps->named_required);
695 piv_clear(aTHX_ &ps->named_optional);
697 p_clear(aTHX_ &ps->slurpy);
700 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
703 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
707 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
708 if (sv_eq(sv, ps->positional_required.data[i].name)) {
713 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
714 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
719 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
720 if (sv_eq(sv, ps->named_required.data[i].name)) {
725 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
726 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
734 static void ps_free_void(pTHX_ void *p) {
739 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
742 return SvTRUE(ks->shift) ? 1 : 0;
744 if (ps->invocant.name) {
747 n += ps->positional_required.used;
748 n += ps->named_required.used * 2;
752 static int args_max(const ParamSpec *ps) {
757 if (ps->invocant.name) {
760 n += ps->positional_required.used;
761 n += ps->positional_optional.used;
762 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
768 static size_t count_positional_params(const ParamSpec *ps) {
769 return ps->positional_required.used + ps->positional_optional.used;
772 static size_t count_named_params(const ParamSpec *ps) {
773 return ps->named_required.used + ps->named_optional.used;
776 static void my_require(pTHX_ const char *file) {
785 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
790 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
796 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
798 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
808 PARAM_INVOCANT = 0x01,
812 static PADOFFSET parse_param(
815 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
816 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
826 c = lex_peek_unichar(0);
828 if (spec->flags & FLAG_TYPES_OK) {
832 Resource *expr_sentinel;
836 floor = start_subparse(FALSE, 0);
837 SAVEFREESV(PL_compcv);
838 CvSPECIAL_on(PL_compcv);
840 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
841 croak("In %"SVf": invalid type expression", SVfARG(declarator));
843 if (MY_OP_SLABBED(expr)) {
844 expr_sentinel = NULL;
846 expr_sentinel = sentinel_register(sen, expr, free_op_void);
850 c = lex_peek_unichar(0);
852 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
857 SvREFCNT_inc_simple_void(PL_compcv);
859 sentinel_disarm(expr_sentinel);
861 *ptype = my_eval(aTHX_ sen, floor, expr);
862 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
863 if (!sv_isobject(*ptype)) {
864 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
867 c = lex_peek_unichar(0);
868 } else if (MY_UNI_IDFIRST(c)) {
869 *ptype = parse_type(aTHX_ sen, declarator);
870 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
871 *ptype = reify_type(aTHX_ sen, declarator, *ptype);
873 c = lex_peek_unichar(0);
881 *pflags |= PARAM_NAMED;
883 c = lex_peek_unichar(0);
887 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
890 if (!(c == '$' || c == '@' || c == '%')) {
891 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
899 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
900 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
902 sv_insert(name, 0, 0, &sigil, 1);
906 c = lex_peek_unichar(0);
913 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
914 param_spec->invocant.name = spec->shift;
915 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
918 op_guard_update(ginit, parse_termexpr(0));
921 c = lex_peek_unichar(0);
925 *pflags |= PARAM_INVOCANT;
928 } else if (c == ',') {
931 } else if (c != ')') {
933 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
935 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
938 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
941 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
942 OP *var = newOP(type, flags);
943 var->op_targ = padoff;
947 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
948 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
951 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
952 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
953 return newBINOP(OP_HELEM, 0, hv, k);
956 static OP *mkconstsv(pTHX_ SV *sv) {
957 return newSVOP(OP_CONST, 0, sv);
960 static OP *mkconstiv(pTHX_ IV i) {
961 return mkconstsv(aTHX_ newSViv(i));
964 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
965 return mkconstsv(aTHX_ newSVpv(p, n));
968 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
970 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
971 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
972 OP *chk, *err, *msg, *xcroak;
974 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
978 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
979 args = op_append_elem(
983 : my_var(aTHX_ 0, padoff)
985 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
988 msg->op_type = OP_ENTERSUB;
989 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
990 msg->op_flags |= OPf_STACKED;
993 msg = newBINOP(OP_CONCAT, 0, err, msg);
997 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
999 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1004 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
1005 args = op_append_elem(
1007 padoff == NOT_IN_PAD
1008 ? S_newDEFSVOP(aTHX)
1009 : my_var(aTHX_ 0, padoff)
1011 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
1014 chk->op_type = OP_ENTERSUB;
1015 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1016 chk->op_flags |= OPf_STACKED;
1019 chk = newLOGOP(OP_OR, 0, chk, xcroak);
1023 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
1024 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
1027 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
1041 char *p = SvPV(declarator, n);
1042 char *q = memchr(p, ' ', n);
1043 mPUSHp(p, q ? (size_t)(q - p) : n);
1046 if (SvTRUE(kws->shift)) {
1052 mPUSHs(newRV_noinc((SV *)newAV()));
1053 mPUSHs(newRV_noinc((SV *)newAV()));
1054 mPUSHs(newRV_noinc((SV *)newAV()));
1055 mPUSHs(newRV_noinc((SV *)newAV()));
1060 if (ps->invocant.name) {
1061 PUSHs(ps->invocant.name);
1062 if (ps->invocant.type) {
1063 PUSHs(ps->invocant.type);
1076 lim = ps->positional_required.used;
1080 av_extend(av, (lim - 1) * 2);
1081 for (i = 0; i < lim; i++) {
1082 Param *cur = &ps->positional_required.data[i];
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));
1094 lim = ps->positional_optional.used;
1098 av_extend(av, (lim - 1) * 2);
1099 for (i = 0; i < lim; i++) {
1100 Param *cur = &ps->positional_optional.data[i].param;
1101 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1102 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1106 mPUSHs(newRV_noinc((SV *)av));
1112 lim = ps->named_required.used;
1116 av_extend(av, (lim - 1) * 2);
1117 for (i = 0; i < lim; i++) {
1118 Param *cur = &ps->named_required.data[i];
1119 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1120 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1124 mPUSHs(newRV_noinc((SV *)av));
1130 lim = ps->named_optional.used;
1134 av_extend(av, (lim - 1) * 2);
1135 for (i = 0; i < lim; i++) {
1136 Param *cur = &ps->named_optional.data[i].param;
1137 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1138 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1142 mPUSHs(newRV_noinc((SV *)av));
1145 if (ps->slurpy.name) {
1146 PUSHs(ps->slurpy.name);
1147 if (ps->slurpy.type) {
1148 PUSHs(ps->slurpy.type);
1160 call_pv(MY_PKG "::_register_info", G_VOID);
1166 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1167 ParamSpec *param_spec;
1172 OpGuard *prelude_sentinel;
1174 OpGuard *attrs_sentinel;
1176 unsigned builtin_attrs;
1179 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1187 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1189 if (PL_parser->expect != XSTATE) {
1190 /* bail out early so we don't predeclare $saw_name */
1191 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1194 sv_catpvs(declarator, " ");
1195 sv_catsv(declarator, saw_name);
1198 sv_eq_pvs(saw_name, "BEGIN") ||
1199 sv_eq_pvs(saw_name, "END") ||
1200 sv_eq_pvs(saw_name, "INIT") ||
1201 sv_eq_pvs(saw_name, "CHECK") ||
1202 sv_eq_pvs(saw_name, "UNITCHECK")
1204 builtin_attrs |= MY_ATTR_SPECIAL;
1208 } else if (!(spec->flags & FLAG_ANON_OK)) {
1209 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1211 sv_catpvs(declarator, " (anon)");
1214 /* we're a subroutine declaration */
1215 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1216 SAVEFREESV(PL_compcv);
1218 /* create outer block: '{' */
1219 save_ix = S_block_start(aTHX_ TRUE);
1221 /* initialize synthetic optree */
1222 Newx(prelude_sentinel, 1, OpGuard);
1223 op_guard_init(prelude_sentinel);
1224 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1229 c = lex_peek_unichar(0);
1231 OpGuard *init_sentinel;
1233 Newx(init_sentinel, 1, OpGuard);
1234 op_guard_init(init_sentinel);
1235 sentinel_register(sen, init_sentinel, free_op_guard_void);
1237 Newx(param_spec, 1, ParamSpec);
1238 ps_init(param_spec);
1239 sentinel_register(sen, param_spec, ps_free_void);
1241 lex_read_unichar(0);
1244 while ((c = lex_peek_unichar(0)) != ')') {
1250 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1254 sigil = SvPV_nolen(name)[0];
1256 /* internal consistency */
1257 if (flags & PARAM_NAMED) {
1258 if (flags & PARAM_INVOCANT) {
1259 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1262 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1264 } else if (flags & PARAM_INVOCANT) {
1265 if (init_sentinel->op) {
1266 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1269 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1271 } else if (sigil != '$' && init_sentinel->op) {
1272 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1275 /* external constraints */
1276 if (param_spec->slurpy.name) {
1277 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1280 assert(!init_sentinel->op);
1281 param_spec->slurpy.name = name;
1282 param_spec->slurpy.padoff = padoff;
1283 param_spec->slurpy.type = type;
1287 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1288 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));
1291 if (flags & PARAM_INVOCANT) {
1292 if (param_spec->invocant.name) {
1293 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1295 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1296 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1298 if (!(spec->flags & FLAG_INVOCANT)) {
1299 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1301 param_spec->invocant.name = name;
1302 param_spec->invocant.padoff = padoff;
1303 param_spec->invocant.type = type;
1307 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1308 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1311 if (ps_contains(aTHX_ param_spec, name)) {
1312 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1315 if (flags & PARAM_NAMED) {
1316 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1317 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1320 if (init_sentinel->op) {
1321 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1322 pi->param.name = name;
1323 pi->param.padoff = padoff;
1324 pi->param.type = type;
1325 pi->init = op_guard_transfer(init_sentinel);
1326 param_spec->named_optional.used++;
1330 if (param_spec->positional_optional.used) {
1331 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));
1334 p = pv_extend(¶m_spec->named_required);
1338 param_spec->named_required.used++;
1341 if (init_sentinel->op || param_spec->positional_optional.used) {
1342 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1343 pi->param.name = name;
1344 pi->param.padoff = padoff;
1345 pi->param.type = type;
1346 pi->init = op_guard_transfer(init_sentinel);
1347 param_spec->positional_optional.used++;
1349 Param *p = pv_extend(¶m_spec->positional_required);
1353 param_spec->positional_required.used++;
1358 lex_read_unichar(0);
1361 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1362 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1363 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1366 param_spec->invocant.name = spec->shift;
1367 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1373 c = lex_peek_unichar(0);
1375 lex_read_unichar(0);
1378 c = lex_peek_unichar(0);
1380 lex_stuff_pvs(":", 0);
1383 lex_read_unichar(0);
1384 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1385 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1387 my_check_prototype(aTHX_ sen, declarator, proto);
1389 c = lex_peek_unichar(0);
1390 if (!(c == ':' || c == '{')) {
1391 lex_stuff_pvs(":", 0);
1398 Newx(attrs_sentinel, 1, OpGuard);
1399 op_guard_init(attrs_sentinel);
1400 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
1402 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1404 /* kludge default attributes in */
1405 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1406 lex_stuff_sv(spec->attrs, 0);
1411 lex_read_unichar(0);
1413 c = lex_peek_unichar(0);
1418 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1423 c = lex_peek_unichar(0);
1426 if (sv_eq_pvs(attr, "lvalue")) {
1427 builtin_attrs |= MY_ATTR_LVALUE;
1429 } else if (sv_eq_pvs(attr, "method")) {
1430 builtin_attrs |= MY_ATTR_METHOD;
1435 lex_read_unichar(0);
1436 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1437 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1439 sv_catpvs(attr, "(");
1441 sv_catpvs(attr, ")");
1444 c = lex_peek_unichar(0);
1448 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
1452 lex_read_unichar(0);
1454 c = lex_peek_unichar(0);
1461 if (c != '{') /* '}' - hi, vim */ {
1462 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1465 /* surprise predeclaration! */
1467 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1468 starts parsing the body */
1469 const I32 sub_ix = start_subparse(FALSE, 0);
1470 SAVEFREESV(PL_compcv);
1472 SvREFCNT_inc_simple_void(PL_compcv);
1476 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1477 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1483 if (builtin_attrs & MY_ATTR_LVALUE) {
1484 CvLVALUE_on(PL_compcv);
1486 if (builtin_attrs & MY_ATTR_METHOD) {
1487 CvMETHOD_on(PL_compcv);
1489 if (builtin_attrs & MY_ATTR_SPECIAL) {
1490 CvSPECIAL_on(PL_compcv);
1493 /* check number of arguments */
1494 if (spec->flags & FLAG_CHECK_NARGS) {
1497 amin = args_min(aTHX_ param_spec, spec);
1499 OP *chk, *cond, *err, *xcroak;
1501 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1505 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1513 xcroak = newCVREF(OPf_WANT_SCALAR,
1514 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_LT, 0,
1519 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1520 mkconstiv(aTHX_ amin));
1521 chk = newLOGOP(OP_AND, 0, cond, err);
1523 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1526 amax = args_max(param_spec);
1528 OP *chk, *cond, *err, *xcroak;
1530 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1534 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1544 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1546 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1547 op_append_elem(OP_LIST, err, xcroak));
1551 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1552 mkconstiv(aTHX_ amax)
1554 chk = newLOGOP(OP_AND, 0, cond, err);
1556 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1559 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1560 OP *chk, *cond, *err, *xcroak;
1561 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1563 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1567 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1569 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1570 op_append_elem(OP_LIST, err, xcroak));
1572 cond = newBINOP(OP_GT, 0,
1573 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1574 mkconstiv(aTHX_ fixed));
1575 cond = newLOGOP(OP_AND, 0,
1577 newBINOP(OP_MODULO, 0,
1579 ? newBINOP(OP_SUBTRACT, 0,
1580 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1581 mkconstiv(aTHX_ fixed))
1582 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1583 mkconstiv(aTHX_ 2)));
1584 chk = newLOGOP(OP_AND, 0, cond, err);
1586 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1591 /* my $invocant = shift; */
1592 if (SvTRUE(spec->shift)) {
1597 OPf_MOD | (OPpLVAL_INTRO << 8),
1598 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1600 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1602 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1605 /* my $invocant = shift; */
1606 if (param_spec->invocant.name) {
1611 OPf_MOD | (OPpLVAL_INTRO << 8),
1612 param_spec->invocant.padoff
1614 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1616 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1618 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1619 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant))));
1623 /* my (...) = @_; */
1630 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1631 OP *const var = my_var(
1633 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1634 param_spec->positional_required.data[i].padoff
1636 lhs = op_append_elem(OP_LIST, lhs, var);
1639 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1640 OP *const var = my_var(
1642 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1643 param_spec->positional_optional.data[i].param.padoff
1645 lhs = op_append_elem(OP_LIST, lhs, var);
1655 * 1) no named params
1662 * => synthetic %{rest}
1663 * 2.2) slurpy is a hash
1665 * 2.3) slurpy is an array
1666 * => synthetic %{rest}
1667 * remember to declare array later
1670 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1671 if (!count_named_params(param_spec)) {
1672 if (param_spec->slurpy.name) {
1673 padoff = param_spec->slurpy.padoff;
1674 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1676 padoff = NOT_IN_PAD;
1679 } else if (slurpy_hash) {
1680 padoff = param_spec->slurpy.padoff;
1683 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1687 if (padoff != NOT_IN_PAD) {
1688 OP *const var = my_var_g(
1691 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1695 lhs = op_append_elem(OP_LIST, lhs, var);
1697 if (type == OP_PADHV) {
1698 param_spec->rest_hash = padoff;
1705 lhs->op_flags |= OPf_PARENS;
1706 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1708 op_guard_update(prelude_sentinel, op_append_list(
1709 OP_LINESEQ, prelude_sentinel->op,
1712 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1718 /* default positional arguments */
1725 req = param_spec->positional_required.used;
1726 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1727 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1732 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1733 mkconstiv(aTHX_ req + i + 1)
1736 var = my_var(aTHX_ 0, cur->param.padoff);
1738 nest = op_append_list(
1740 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
1750 op_guard_update(prelude_sentinel, op_append_list(
1751 OP_LINESEQ, prelude_sentinel->op,
1756 /* named parameters */
1757 if (count_named_params(param_spec)) {
1760 assert(param_spec->rest_hash != NOT_IN_PAD);
1762 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1763 Param *cur = ¶m_spec->named_required.data[i];
1765 char *p = SvPV(cur->name, n);
1768 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1770 if (spec->flags & FLAG_CHECK_NARGS) {
1773 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1774 var = newUNOP(OP_DELETE, 0, var);
1776 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1779 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1781 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1783 cond = newUNOP(OP_EXISTS, 0, cond);
1785 cond = newCONDOP(0, cond, var, xcroak);
1790 OPf_MOD | (OPpLVAL_INTRO << 8),
1793 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1795 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1798 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1799 ParamInit *cur = ¶m_spec->named_optional.data[i];
1801 char *p = SvPV(cur->param.name, n);
1804 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1805 var = newUNOP(OP_DELETE, 0, var);
1807 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1808 cond = newUNOP(OP_EXISTS, 0, cond);
1810 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
1814 OPf_MOD | (OPpLVAL_INTRO << 8),
1817 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1819 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1822 if (!param_spec->slurpy.name) {
1823 if (spec->flags & FLAG_CHECK_NARGS) {
1824 /* croak if %{rest} */
1825 OP *xcroak, *cond, *keys, *msg;
1827 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1828 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1830 OP *first, *mid, *last;
1834 mid = mkconstpvs(", ");
1835 mid->op_sibling = last;
1837 first = newOP(OP_PUSHMARK, 0);
1839 keys = newLISTOP(OP_JOIN, 0, first, mid);
1840 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1841 ((LISTOP *)keys)->op_last = last;
1844 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1845 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1849 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1851 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1853 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1854 xcroak = newCONDOP(0, cond, xcroak, NULL);
1856 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
1860 clear = newASSIGNOP(
1862 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1867 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1869 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1872 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1877 OPf_MOD | (OPpLVAL_INTRO << 8),
1878 param_spec->slurpy.padoff
1881 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1883 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1885 clear = newASSIGNOP(
1887 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1892 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1896 if (spec->flags & FLAG_CHECK_TARGS) {
1897 size_t i, lim, base;
1900 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1901 Param *cur = ¶m_spec->positional_required.data[i];
1904 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1909 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1910 Param *cur = ¶m_spec->positional_optional.data[i].param;
1913 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1918 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1919 Param *cur = ¶m_spec->named_required.data[i];
1922 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1927 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1928 Param *cur = ¶m_spec->named_optional.data[i].param;
1931 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1936 if (param_spec->slurpy.type) {
1937 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1938 OP *check, *list, *loop;
1940 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1942 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1943 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1945 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1946 list = newUNOP(OP_VALUES, 0, list);
1949 loop = newFOROP(0, NULL, list, check, NULL);
1951 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
1956 /* finally let perl parse the actual subroutine body */
1957 body = parse_block(0);
1959 /* add '();' to make function return nothing by default */
1960 /* (otherwise the invisible parameter initialization can "leak" into
1961 the return value: fun ($x) {}->("asdf", 0) == 2) */
1962 if (prelude_sentinel->op) {
1963 body = newSTATEOP(0, NULL, body);
1966 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1971 OP *const attrs = op_guard_relinquish(attrs_sentinel);
1973 SvREFCNT_inc_simple_void(PL_compcv);
1975 /* close outer block: '}' */
1976 S_block_end(aTHX_ save_ix, body);
1980 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
1981 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1987 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1991 *pop = newOP(OP_NULL, 0);
1992 return KEYWORD_PLUGIN_STMT;
2002 return KEYWORD_PLUGIN_EXPR;
2006 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
2009 Sentinel sen = { NULL };
2014 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
2016 if (kw_flags(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2017 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2019 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2030 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2041 xcv = sv_2cv(sv, &hv, &gv, 0);
2042 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
2048 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2050 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2051 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2052 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2053 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2054 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2055 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2056 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2057 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2058 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2059 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2060 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2061 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2063 next_keyword_plugin = PL_keyword_plugin;
2064 PL_keyword_plugin = my_keyword_plugin;