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 = 0x04,
96 FLAG_CHECK_NARGS = 0x08,
98 FLAG_NAMED_PARAMS = 0x20,
100 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"
224 MY_ATTR_LVALUE = 0x01,
225 MY_ATTR_METHOD = 0x02,
226 MY_ATTR_SPECIAL = 0x04
229 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
230 char ds[UTF8_MAXBYTES + 1], *d;
231 d = (char *)uvchr_to_utf8((U8 *)ds, c);
235 sv_catpvn(sv, ds, d - ds);
239 #define MY_UNI_IDFIRST(C) isIDFIRST_uni(C)
240 #define MY_UNI_IDCONT(C) isALNUM_uni(C)
242 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
243 bool at_start, at_substart;
245 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
250 at_start = at_substart = TRUE;
251 c = lex_peek_unichar(0);
254 if (at_substart ? MY_UNI_IDFIRST(c) : MY_UNI_IDCONT(c)) {
256 my_sv_cat_c(aTHX_ sv, c);
258 c = lex_peek_unichar(0);
259 } else if (allow_package && !at_substart && c == '\'') {
261 c = lex_peek_unichar(0);
262 if (!MY_UNI_IDFIRST(c)) {
263 lex_stuff_pvs("'", 0);
268 } else if (allow_package && (at_start || !at_substart) && c == ':') {
270 if (lex_peek_unichar(0) != ':') {
271 lex_stuff_pvs(":", 0);
275 c = lex_peek_unichar(0);
276 if (!MY_UNI_IDFIRST(c)) {
277 lex_stuff_pvs("::", 0);
288 return SvCUR(sv) ? sv : NULL;
291 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
296 start = CopLINE(PL_curcop);
298 sv = sentinel_mortalize(sen, newSVpvs(""));
305 c = lex_read_unichar(0);
307 CopLINE_set(PL_curcop, start);
312 c = lex_read_unichar(0);
314 CopLINE_set(PL_curcop, start);
317 if (keep_backslash || (c != '(' && c != ')')) {
320 } else if (c == '(') {
322 } else if (c == ')') {
329 my_sv_cat_c(aTHX_ sv, c);
335 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
336 char *start, *r, *w, *end;
340 start = SvPV(proto, len);
343 for (w = r = start; r < end; r++) {
349 SvCUR_set(proto, w - start);
353 if (!ckWARN(WARN_ILLEGALPROTO)) {
357 /* check for bad characters */
358 if (strspn(start, "$@%*;[]&\\_+") != len) {
359 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
361 packWARN(WARN_ILLEGALPROTO),
362 "Illegal character in prototype for %"SVf" : %s",
371 : pv_pretty(dsv, start, len, 60, NULL, NULL,
372 PERL_PV_ESCAPE_NONASCII
378 for (r = start; r < end; r++) {
382 packWARN(WARN_ILLEGALPROTO),
383 "Illegal character in prototype for %"SVf" : %s",
384 SVfARG(declarator), r
389 if (r[1] && !strchr(";@%", *r)) {
391 packWARN(WARN_ILLEGALPROTO),
392 "Illegal character after '_' in prototype for %"SVf" : %s",
393 SVfARG(declarator), r
403 packWARN(WARN_ILLEGALPROTO),
404 "prototype after '%c' for %"SVf": %s",
405 *r, SVfARG(declarator), r + 1
413 if (strchr("$@%&*", *r)) {
418 for (; r < end && *r != ']'; r++) {
419 if (!strchr("$@%&*", *r)) {
423 if (*r == ']' && r[-1] != '[') {
428 packWARN(WARN_ILLEGALPROTO),
429 "Illegal character after '\\' in prototype for %"SVf" : %s",
430 SVfARG(declarator), r
444 static SV *parse_type(pTHX_ Sentinel, const SV *);
446 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
450 t = my_scan_word(aTHX_ sen, TRUE);
453 c = lex_peek_unichar(0);
459 my_sv_cat_c(aTHX_ t, c);
461 u = parse_type(aTHX_ sen, declarator);
464 c = lex_peek_unichar(0);
466 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
471 my_sv_cat_c(aTHX_ t, c);
477 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
481 t = parse_type_paramd(aTHX_ sen, declarator);
483 c = lex_peek_unichar(0);
490 my_sv_cat_c(aTHX_ t, c);
491 u = parse_type_paramd(aTHX_ sen, declarator);
494 c = lex_peek_unichar(0);
500 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, const KWSpec *spec, SV *name) {
506 type_reifiers = get_av(MY_PKG "::type_reifiers", 0);
507 assert(type_reifiers != NULL);
509 if (spec->reify_type < 0 || spec->reify_type > av_len(type_reifiers)) {
510 croak("In %"SVf": internal error: reify_type [%ld] out of range [%ld]", SVfARG(declarator), (long)spec->reify_type, (long)(av_len(type_reifiers) + 1));
513 psv = av_fetch(type_reifiers, spec->reify_type, 0);
526 n = call_sv(sv, G_SCALAR);
530 /* don't warn about n being unused if assert() is compiled out */
533 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
540 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
553 DEFSTRUCT(ParamInit) {
558 #define VEC(B) B ## _Vec
560 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
566 DEFVECTOR(ParamInit);
568 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
571 Newx(p->data, p->size, B); \
572 } static void N(VEC(B) *)
574 DEFSTRUCT(ParamSpec) {
576 VEC(Param) positional_required;
577 VEC(ParamInit) positional_optional;
578 VEC(Param) named_required;
579 VEC(ParamInit) named_optional;
584 DEFVECTOR_INIT(pv_init, Param);
585 DEFVECTOR_INIT(piv_init, ParamInit);
587 static void p_init(Param *p) {
589 p->padoff = NOT_IN_PAD;
593 static void ps_init(ParamSpec *ps) {
594 p_init(&ps->invocant);
595 pv_init(&ps->positional_required);
596 piv_init(&ps->positional_optional);
597 pv_init(&ps->named_required);
598 piv_init(&ps->named_optional);
600 ps->rest_hash = NOT_IN_PAD;
603 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
604 assert(p->used <= p->size); \
605 if (p->used == p->size) { \
606 const size_t n = p->size / 2 * 3 + 1; \
607 Renew(p->data, n, B); \
610 return &p->data[p->used]; \
611 } static B (*N(VEC(B) *))
613 DEFVECTOR_EXTEND(pv_extend, Param);
614 DEFVECTOR_EXTEND(piv_extend, ParamInit);
616 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
619 F(aTHX_ &p->data[p->used]); \
624 } static void N(pTHX_ VEC(B) *)
626 static void p_clear(pTHX_ Param *p) {
628 p->padoff = NOT_IN_PAD;
632 static void pi_clear(pTHX_ ParamInit *pi) {
633 p_clear(aTHX_ &pi->param);
634 op_guard_clear(aTHX_ &pi->init);
637 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
638 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
640 static void ps_clear(pTHX_ ParamSpec *ps) {
641 p_clear(aTHX_ &ps->invocant);
643 pv_clear(aTHX_ &ps->positional_required);
644 piv_clear(aTHX_ &ps->positional_optional);
646 pv_clear(aTHX_ &ps->named_required);
647 piv_clear(aTHX_ &ps->named_optional);
649 p_clear(aTHX_ &ps->slurpy);
652 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
655 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
659 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
660 if (sv_eq(sv, ps->positional_required.data[i].name)) {
665 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
666 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
671 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
672 if (sv_eq(sv, ps->named_required.data[i].name)) {
677 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
678 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
686 static void ps_free_void(pTHX_ void *p) {
691 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
694 return SvTRUE(ks->shift) ? 1 : 0;
696 if (ps->invocant.name) {
699 n += ps->positional_required.used;
700 n += ps->named_required.used * 2;
704 static int args_max(const ParamSpec *ps) {
709 if (ps->invocant.name) {
712 n += ps->positional_required.used;
713 n += ps->positional_optional.used;
714 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
720 static size_t count_positional_params(const ParamSpec *ps) {
721 return ps->positional_required.used + ps->positional_optional.used;
724 static size_t count_named_params(const ParamSpec *ps) {
725 return ps->named_required.used + ps->named_optional.used;
728 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
733 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
739 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
741 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
751 PARAM_INVOCANT = 0x01,
755 static PADOFFSET parse_param(
758 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
759 int *pflags, SV **pname, OpGuard *ginit, SV **ptype
769 c = lex_peek_unichar(0);
771 if (spec->flags & FLAG_TYPES_OK) {
775 Resource *expr_sentinel;
779 floor = start_subparse(FALSE, 0);
780 SAVEFREESV(PL_compcv);
781 CvSPECIAL_on(PL_compcv);
783 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
784 croak("In %"SVf": invalid type expression", SVfARG(declarator));
786 if (MY_OP_SLABBED(expr)) {
787 expr_sentinel = NULL;
789 expr_sentinel = sentinel_register(sen, expr, free_op_void);
793 c = lex_peek_unichar(0);
795 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
800 SvREFCNT_inc_simple_void(PL_compcv);
802 sentinel_disarm(expr_sentinel);
804 *ptype = my_eval(aTHX_ sen, floor, expr);
805 if (!SvROK(*ptype)) {
806 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
808 if (!sv_isobject(*ptype)) {
809 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
812 c = lex_peek_unichar(0);
813 } else if (MY_UNI_IDFIRST(c)) {
814 *ptype = parse_type(aTHX_ sen, declarator);
815 *ptype = reify_type(aTHX_ sen, declarator, spec, *ptype);
817 c = lex_peek_unichar(0);
825 *pflags |= PARAM_NAMED;
827 c = lex_peek_unichar(0);
831 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
834 if (!(c == '$' || c == '@' || c == '%')) {
835 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
843 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
844 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
846 sv_insert(name, 0, 0, &sigil, 1);
850 c = lex_peek_unichar(0);
857 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
858 param_spec->invocant.name = spec->shift;
859 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
862 op_guard_update(ginit, parse_termexpr(0));
865 c = lex_peek_unichar(0);
869 *pflags |= PARAM_INVOCANT;
872 } else if (c == ',') {
875 } else if (c != ')') {
877 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
879 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
882 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
885 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
886 OP *var = newOP(type, flags);
887 var->op_targ = padoff;
891 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
892 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
895 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
896 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
897 return newBINOP(OP_HELEM, 0, hv, k);
900 static OP *mkconstsv(pTHX_ SV *sv) {
901 return newSVOP(OP_CONST, 0, sv);
904 static OP *mkconstiv(pTHX_ IV i) {
905 return mkconstsv(aTHX_ newSViv(i));
908 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
909 return mkconstsv(aTHX_ newSVpv(p, n));
912 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
914 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
915 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
916 OP *chk, *err, *msg, *xcroak;
918 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
922 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
923 args = op_append_elem(
927 : my_var(aTHX_ 0, padoff)
929 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
932 msg->op_type = OP_ENTERSUB;
933 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
934 msg->op_flags |= OPf_STACKED;
937 msg = newBINOP(OP_CONCAT, 0, err, msg);
941 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
943 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
948 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
949 args = op_append_elem(
953 : my_var(aTHX_ 0, padoff)
955 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
958 chk->op_type = OP_ENTERSUB;
959 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
960 chk->op_flags |= OPf_STACKED;
963 chk = newLOGOP(OP_OR, 0, chk, xcroak);
967 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
968 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
971 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
985 char *p = SvPV(declarator, n);
986 char *q = memchr(p, ' ', n);
987 SV *tmp = newSVpvn_utf8(p, q ? (size_t)(q - p) : n, SvUTF8(declarator));
991 if (SvTRUE(kws->shift)) {
997 mPUSHs(newRV_noinc((SV *)newAV()));
998 mPUSHs(newRV_noinc((SV *)newAV()));
999 mPUSHs(newRV_noinc((SV *)newAV()));
1000 mPUSHs(newRV_noinc((SV *)newAV()));
1005 if (ps->invocant.name) {
1006 PUSHs(ps->invocant.name);
1007 if (ps->invocant.type) {
1008 PUSHs(ps->invocant.type);
1021 lim = ps->positional_required.used;
1025 av_extend(av, (lim - 1) * 2);
1026 for (i = 0; i < lim; i++) {
1027 Param *cur = &ps->positional_required.data[i];
1028 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1029 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1033 mPUSHs(newRV_noinc((SV *)av));
1039 lim = ps->positional_optional.used;
1043 av_extend(av, (lim - 1) * 2);
1044 for (i = 0; i < lim; i++) {
1045 Param *cur = &ps->positional_optional.data[i].param;
1046 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1047 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1051 mPUSHs(newRV_noinc((SV *)av));
1057 lim = ps->named_required.used;
1061 av_extend(av, (lim - 1) * 2);
1062 for (i = 0; i < lim; i++) {
1063 Param *cur = &ps->named_required.data[i];
1064 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1065 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1069 mPUSHs(newRV_noinc((SV *)av));
1075 lim = ps->named_optional.used;
1079 av_extend(av, (lim - 1) * 2);
1080 for (i = 0; i < lim; i++) {
1081 Param *cur = &ps->named_optional.data[i].param;
1082 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1083 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1087 mPUSHs(newRV_noinc((SV *)av));
1090 if (ps->slurpy.name) {
1091 PUSHs(ps->slurpy.name);
1092 if (ps->slurpy.type) {
1093 PUSHs(ps->slurpy.type);
1105 call_pv(MY_PKG "::_register_info", G_VOID);
1111 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1112 ParamSpec *param_spec;
1117 OpGuard *prelude_sentinel;
1119 OpGuard *attrs_sentinel;
1121 unsigned builtin_attrs;
1124 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1125 if (lex_bufutf8()) {
1126 SvUTF8_on(declarator);
1135 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1137 if (PL_parser->expect != XSTATE) {
1138 /* bail out early so we don't predeclare $saw_name */
1139 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1142 sv_catpvs(declarator, " ");
1143 sv_catsv(declarator, saw_name);
1146 sv_eq_pvs(saw_name, "BEGIN") ||
1147 sv_eq_pvs(saw_name, "END") ||
1148 sv_eq_pvs(saw_name, "INIT") ||
1149 sv_eq_pvs(saw_name, "CHECK") ||
1150 sv_eq_pvs(saw_name, "UNITCHECK")
1152 builtin_attrs |= MY_ATTR_SPECIAL;
1156 } else if (!(spec->flags & FLAG_ANON_OK)) {
1157 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1159 sv_catpvs(declarator, " (anon)");
1162 /* we're a subroutine declaration */
1163 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1164 SAVEFREESV(PL_compcv);
1166 /* create outer block: '{' */
1167 save_ix = S_block_start(aTHX_ TRUE);
1169 /* initialize synthetic optree */
1170 Newx(prelude_sentinel, 1, OpGuard);
1171 op_guard_init(prelude_sentinel);
1172 sentinel_register(sen, prelude_sentinel, free_op_guard_void);
1177 c = lex_peek_unichar(0);
1179 OpGuard *init_sentinel;
1181 Newx(init_sentinel, 1, OpGuard);
1182 op_guard_init(init_sentinel);
1183 sentinel_register(sen, init_sentinel, free_op_guard_void);
1185 Newx(param_spec, 1, ParamSpec);
1186 ps_init(param_spec);
1187 sentinel_register(sen, param_spec, ps_free_void);
1189 lex_read_unichar(0);
1192 while ((c = lex_peek_unichar(0)) != ')') {
1198 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1202 sigil = SvPV_nolen(name)[0];
1204 /* internal consistency */
1205 if (flags & PARAM_NAMED) {
1206 if (flags & PARAM_INVOCANT) {
1207 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1210 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1212 } else if (flags & PARAM_INVOCANT) {
1213 if (init_sentinel->op) {
1214 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1217 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1219 } else if (sigil != '$' && init_sentinel->op) {
1220 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1223 /* external constraints */
1224 if (param_spec->slurpy.name) {
1225 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1228 assert(!init_sentinel->op);
1229 param_spec->slurpy.name = name;
1230 param_spec->slurpy.padoff = padoff;
1231 param_spec->slurpy.type = type;
1235 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1236 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));
1239 if (flags & PARAM_INVOCANT) {
1240 if (param_spec->invocant.name) {
1241 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1243 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1244 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1246 if (!(spec->flags & FLAG_INVOCANT)) {
1247 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1249 param_spec->invocant.name = name;
1250 param_spec->invocant.padoff = padoff;
1251 param_spec->invocant.type = type;
1255 if (init_sentinel->op && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1256 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1259 if (ps_contains(aTHX_ param_spec, name)) {
1260 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1263 if (flags & PARAM_NAMED) {
1264 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1265 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1268 if (init_sentinel->op) {
1269 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1270 pi->param.name = name;
1271 pi->param.padoff = padoff;
1272 pi->param.type = type;
1273 pi->init = op_guard_transfer(init_sentinel);
1274 param_spec->named_optional.used++;
1278 if (param_spec->positional_optional.used) {
1279 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));
1282 p = pv_extend(¶m_spec->named_required);
1286 param_spec->named_required.used++;
1289 if (init_sentinel->op || param_spec->positional_optional.used) {
1290 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1291 pi->param.name = name;
1292 pi->param.padoff = padoff;
1293 pi->param.type = type;
1294 pi->init = op_guard_transfer(init_sentinel);
1295 param_spec->positional_optional.used++;
1297 Param *p = pv_extend(¶m_spec->positional_required);
1301 param_spec->positional_required.used++;
1306 lex_read_unichar(0);
1309 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1310 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1311 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1314 param_spec->invocant.name = spec->shift;
1315 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1321 c = lex_peek_unichar(0);
1323 lex_read_unichar(0);
1326 c = lex_peek_unichar(0);
1328 lex_stuff_pvs(":", 0);
1331 lex_read_unichar(0);
1332 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1333 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1335 my_check_prototype(aTHX_ sen, declarator, proto);
1337 c = lex_peek_unichar(0);
1338 if (!(c == ':' || c == '{')) {
1339 lex_stuff_pvs(":", 0);
1346 Newx(attrs_sentinel, 1, OpGuard);
1347 op_guard_init(attrs_sentinel);
1348 sentinel_register(sen, attrs_sentinel, free_op_guard_void);
1350 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1352 /* kludge default attributes in */
1353 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1354 lex_stuff_sv(spec->attrs, 0);
1359 lex_read_unichar(0);
1361 c = lex_peek_unichar(0);
1366 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1371 c = lex_peek_unichar(0);
1374 if (sv_eq_pvs(attr, "lvalue")) {
1375 builtin_attrs |= MY_ATTR_LVALUE;
1377 } else if (sv_eq_pvs(attr, "method")) {
1378 builtin_attrs |= MY_ATTR_METHOD;
1383 lex_read_unichar(0);
1384 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1385 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1387 sv_catpvs(attr, "(");
1389 sv_catpvs(attr, ")");
1392 c = lex_peek_unichar(0);
1396 op_guard_update(attrs_sentinel, op_append_elem(OP_LIST, attrs_sentinel->op, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))));
1400 lex_read_unichar(0);
1402 c = lex_peek_unichar(0);
1409 if (c != '{') /* '}' - hi, vim */ {
1410 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1413 /* surprise predeclaration! */
1415 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1416 starts parsing the body */
1417 const I32 sub_ix = start_subparse(FALSE, 0);
1418 SAVEFREESV(PL_compcv);
1420 SvREFCNT_inc_simple_void(PL_compcv);
1424 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1425 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1431 if (builtin_attrs & MY_ATTR_LVALUE) {
1432 CvLVALUE_on(PL_compcv);
1434 if (builtin_attrs & MY_ATTR_METHOD) {
1435 CvMETHOD_on(PL_compcv);
1437 if (builtin_attrs & MY_ATTR_SPECIAL) {
1438 CvSPECIAL_on(PL_compcv);
1441 /* check number of arguments */
1442 if (spec->flags & FLAG_CHECK_NARGS) {
1445 amin = args_min(aTHX_ param_spec, spec);
1447 OP *chk, *cond, *err, *xcroak;
1449 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1453 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1461 xcroak = newCVREF(OPf_WANT_SCALAR,
1462 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1463 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1464 op_append_elem(OP_LIST, err, xcroak));
1466 cond = newBINOP(OP_LT, 0,
1467 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1468 mkconstiv(aTHX_ amin));
1469 chk = newLOGOP(OP_AND, 0, cond, err);
1471 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1474 amax = args_max(param_spec);
1476 OP *chk, *cond, *err, *xcroak;
1478 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1482 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1492 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1494 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1495 op_append_elem(OP_LIST, err, xcroak));
1499 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1500 mkconstiv(aTHX_ amax)
1502 chk = newLOGOP(OP_AND, 0, cond, err);
1504 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1507 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1508 OP *chk, *cond, *err, *xcroak;
1509 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1511 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1515 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1517 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1518 op_append_elem(OP_LIST, err, xcroak));
1520 cond = newBINOP(OP_GT, 0,
1521 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1522 mkconstiv(aTHX_ fixed));
1523 cond = newLOGOP(OP_AND, 0,
1525 newBINOP(OP_MODULO, 0,
1527 ? newBINOP(OP_SUBTRACT, 0,
1528 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1529 mkconstiv(aTHX_ fixed))
1530 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1531 mkconstiv(aTHX_ 2)));
1532 chk = newLOGOP(OP_AND, 0, cond, err);
1534 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, chk)));
1539 /* my $invocant = shift; */
1540 if (SvTRUE(spec->shift)) {
1545 OPf_MOD | (OPpLVAL_INTRO << 8),
1546 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1548 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1550 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1553 /* my $invocant = shift; */
1554 if (param_spec->invocant.name) {
1559 OPf_MOD | (OPpLVAL_INTRO << 8),
1560 param_spec->invocant.padoff
1562 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1564 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1566 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1567 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant))));
1571 /* my (...) = @_; */
1578 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1579 OP *const var = my_var(
1581 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1582 param_spec->positional_required.data[i].padoff
1584 lhs = op_append_elem(OP_LIST, lhs, var);
1587 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1588 OP *const var = my_var(
1590 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1591 param_spec->positional_optional.data[i].param.padoff
1593 lhs = op_append_elem(OP_LIST, lhs, var);
1603 * 1) no named params
1610 * => synthetic %{rest}
1611 * 2.2) slurpy is a hash
1613 * 2.3) slurpy is an array
1614 * => synthetic %{rest}
1615 * remember to declare array later
1618 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1619 if (!count_named_params(param_spec)) {
1620 if (param_spec->slurpy.name) {
1621 padoff = param_spec->slurpy.padoff;
1622 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1624 padoff = NOT_IN_PAD;
1627 } else if (slurpy_hash) {
1628 padoff = param_spec->slurpy.padoff;
1631 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1635 if (padoff != NOT_IN_PAD) {
1636 OP *const var = my_var_g(
1639 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1643 lhs = op_append_elem(OP_LIST, lhs, var);
1645 if (type == OP_PADHV) {
1646 param_spec->rest_hash = padoff;
1653 lhs->op_flags |= OPf_PARENS;
1654 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1656 op_guard_update(prelude_sentinel, op_append_list(
1657 OP_LINESEQ, prelude_sentinel->op,
1660 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1666 /* default positional arguments */
1673 req = param_spec->positional_required.used;
1674 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1675 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1680 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1681 mkconstiv(aTHX_ req + i + 1)
1684 var = my_var(aTHX_ 0, cur->param.padoff);
1686 nest = op_append_list(
1688 newASSIGNOP(OPf_STACKED, var, 0, op_guard_relinquish(&cur->init))
1698 op_guard_update(prelude_sentinel, op_append_list(
1699 OP_LINESEQ, prelude_sentinel->op,
1704 /* named parameters */
1705 if (count_named_params(param_spec)) {
1708 assert(param_spec->rest_hash != NOT_IN_PAD);
1710 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1711 Param *cur = ¶m_spec->named_required.data[i];
1713 char *p = SvPV(cur->name, n);
1716 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1718 if (spec->flags & FLAG_CHECK_NARGS) {
1721 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1722 var = newUNOP(OP_DELETE, 0, var);
1724 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1727 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1729 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1731 cond = newUNOP(OP_EXISTS, 0, cond);
1733 cond = newCONDOP(0, cond, var, xcroak);
1738 OPf_MOD | (OPpLVAL_INTRO << 8),
1741 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1743 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1746 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1747 ParamInit *cur = ¶m_spec->named_optional.data[i];
1749 char *p = SvPV(cur->param.name, n);
1752 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1753 var = newUNOP(OP_DELETE, 0, var);
1755 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1756 cond = newUNOP(OP_EXISTS, 0, cond);
1758 cond = newCONDOP(0, cond, var, op_guard_relinquish(&cur->init));
1762 OPf_MOD | (OPpLVAL_INTRO << 8),
1765 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1767 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1770 if (!param_spec->slurpy.name) {
1771 if (spec->flags & FLAG_CHECK_NARGS) {
1772 /* croak if %{rest} */
1773 OP *xcroak, *cond, *keys, *msg;
1775 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1776 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1778 OP *first, *mid, *last;
1782 mid = mkconstpvs(", ");
1783 mid->op_sibling = last;
1785 first = newOP(OP_PUSHMARK, 0);
1787 keys = newLISTOP(OP_JOIN, 0, first, mid);
1788 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1789 ((LISTOP *)keys)->op_last = last;
1792 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1793 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1797 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1799 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1801 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1802 xcroak = newCONDOP(0, cond, xcroak, NULL);
1804 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, xcroak)));
1808 clear = newASSIGNOP(
1810 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1815 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1817 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1820 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1825 OPf_MOD | (OPpLVAL_INTRO << 8),
1826 param_spec->slurpy.padoff
1829 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1831 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, var)));
1833 clear = newASSIGNOP(
1835 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1840 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, clear)));
1844 if (spec->flags & FLAG_CHECK_TARGS) {
1845 size_t i, lim, base;
1848 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1849 Param *cur = ¶m_spec->positional_required.data[i];
1852 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1857 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1858 Param *cur = ¶m_spec->positional_optional.data[i].param;
1861 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1866 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1867 Param *cur = ¶m_spec->named_required.data[i];
1870 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1875 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1876 Param *cur = ¶m_spec->named_optional.data[i].param;
1879 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur))));
1884 if (param_spec->slurpy.type) {
1885 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1886 OP *check, *list, *loop;
1888 check = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1890 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1891 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1893 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1894 list = newUNOP(OP_VALUES, 0, list);
1897 loop = newFOROP(0, NULL, list, check, NULL);
1899 op_guard_update(prelude_sentinel, op_append_list(OP_LINESEQ, prelude_sentinel->op, newSTATEOP(0, NULL, loop)));
1904 /* finally let perl parse the actual subroutine body */
1905 body = parse_block(0);
1907 /* add '();' to make function return nothing by default */
1908 /* (otherwise the invisible parameter initialization can "leak" into
1909 the return value: fun ($x) {}->("asdf", 0) == 2) */
1910 if (prelude_sentinel->op) {
1911 body = newSTATEOP(0, NULL, body);
1914 body = op_append_list(OP_LINESEQ, op_guard_relinquish(prelude_sentinel), body);
1919 OP *const attrs = op_guard_relinquish(attrs_sentinel);
1921 SvREFCNT_inc_simple_void(PL_compcv);
1923 /* close outer block: '}' */
1924 S_block_end(aTHX_ save_ix, body);
1928 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
1929 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1935 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1939 *pop = newOP(OP_NULL, 0);
1940 return KEYWORD_PLUGIN_STMT;
1950 return KEYWORD_PLUGIN_EXPR;
1954 static int kw_flags_enter(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
1957 const char *p, *kw_active;
1958 STRLEN kw_active_len;
1961 if (!(hints = GvHV(PL_hintgv))) {
1964 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
1968 kw_active = SvPV(sv, kw_active_len);
1969 if (kw_active_len <= kw_len) {
1973 kw_is_utf8 = lex_bufutf8();
1977 (p = strchr(p, *kw_ptr)) &&
1978 p < kw_active + kw_active_len - kw_len;
1982 (p == kw_active || p[-1] == ' ') &&
1984 memcmp(kw_ptr, p, kw_len) == 0
1989 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
1992 spec->reify_type = 0;
1993 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
1994 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
1996 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
1997 const char *fk_ptr_; \
2001 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
2002 sv_catpvn(fk_sv_, PTR, LEN); \
2003 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
2004 fk_xlen_ = fk_len_; \
2006 fk_xlen_ = -fk_xlen_; \
2008 if (!((X) = hv_fetch(hints, fk_ptr_, fk_xlen_, 0))) { \
2009 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
2013 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
2014 spec->flags = SvIV(*psv);
2016 FETCH_HINTK_INTO(REIFY_, kw_ptr, kw_len, psv);
2017 spec->reify_type = SvIV(*psv);
2019 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
2020 SvSetSV(spec->shift, *psv);
2022 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
2023 SvSetSV(spec->attrs, *psv);
2025 #undef FETCH_HINTK_INTO
2032 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
2033 Sentinel sen = { NULL };
2037 if (kw_flags_enter(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2038 /* scope was entered, 'sen' and 'spec' are initialized */
2039 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2043 /* not one of our keywords, no allocation done */
2044 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2052 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2063 xcv = sv_2cv(sv, &hv, &gv, 0);
2064 RETVAL = PTR2UV(xcv ? CvROOT(xcv) : NULL);
2070 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2072 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2073 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2074 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2075 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2076 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2077 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2078 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2079 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2080 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2081 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2082 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2083 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2084 newCONSTSUB(stash, "HINTK_REIFY_", newSVpvs(HINTK_REIFY_));
2086 next_keyword_plugin = PL_keyword_plugin;
2087 PL_keyword_plugin = my_keyword_plugin;