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) {
124 cur->destroy(aTHX_ cur->data);
125 cur->data = (void *)"no";
132 static void sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
135 Newx(cur, 1, Resource);
137 cur->destroy = destroy;
142 static void my_sv_refcnt_dec_void(pTHX_ void *p) {
147 static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
148 sentinel_register(sen, sv, my_sv_refcnt_dec_void);
152 static void my_safefree(void *p) {
156 #define SENTINEL_ALLOC(SEN, P, N, T) STMT_START { \
158 sentinel_register(SEN, P, my_safefree); \
161 #define SENTINEL_MDUP(SEN, P, O, N, T) STMT_START { \
162 void *const _sentinel_mdup_tmp_ = (P); \
163 SENTINEL_ALLOC(SEN, P, N, T); \
164 memcpy(P, _sentinel_mdup_tmp_, O * sizeof (T)); \
167 #define SENTINEL_REALLOC(SEN, P, N, T) STMT_START { \
170 SENTINEL_ALLOC(SEN, P, N, T); \
172 Resource **_sentinel_realloc_tmp_ = (SEN); \
174 assert(*_sentinel_realloc_tmp_ != NULL); \
175 if ((*_sentinel_realloc_tmp_)->data == (P)) { \
176 Renew((*_sentinel_realloc_tmp_)->data, N, T); \
177 (P) = (*_sentinel_realloc_tmp_)->data; \
180 _sentinel_realloc_tmp_ = &(*_sentinel_realloc_tmp_)->next; \
185 static int kw_flags(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
188 const char *p, *kw_active;
189 STRLEN kw_active_len;
192 spec->shift = sentinel_mortalize(sen, newSVpvs(""));
193 spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
195 if (!(hints = GvHV(PL_hintgv))) {
198 if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) {
202 kw_active = SvPV(sv, kw_active_len);
203 if (kw_active_len <= kw_len) {
208 (p = strchr(p, *kw_ptr)) &&
209 p < kw_active + kw_active_len - kw_len;
213 (p == kw_active || p[-1] == ' ') &&
215 memcmp(kw_ptr, p, kw_len) == 0
218 #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
219 const char *fk_ptr_; \
222 fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
223 sv_catpvn(fk_sv_, PTR, LEN); \
224 fk_ptr_ = SvPV(fk_sv_, fk_len_); \
225 if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
226 croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
230 FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
231 spec->flags = SvIV(*psv);
233 FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
234 SvSetSV(spec->shift, *psv);
236 FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv);
237 SvSetSV(spec->attrs, *psv);
239 #undef FETCH_HINTK_INTO
247 static void free_ptr_op_void(pTHX_ void *vp) {
253 static void free_op_void(pTHX_ void *vp) {
258 #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
260 static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
262 const char *sv_p = SvPV(sv, sv_len);
263 return memcmp(sv_p, p, n) == 0;
267 #include "padop_on_crack.c.inc"
271 MY_ATTR_LVALUE = 0x01,
272 MY_ATTR_METHOD = 0x02,
273 MY_ATTR_SPECIAL = 0x04
276 static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
277 char ds[UTF8_MAXBYTES + 1], *d;
278 d = uvchr_to_utf8(ds, c);
282 sv_catpvn(sv, ds, d - ds);
285 static bool my_is_uni_xidfirst(pTHX_ UV c) {
286 U8 tmpbuf[UTF8_MAXBYTES + 1];
287 uvchr_to_utf8(tmpbuf, c);
288 return is_utf8_xidfirst(tmpbuf);
291 static bool my_is_uni_xidcont(pTHX_ UV c) {
292 U8 tmpbuf[UTF8_MAXBYTES + 1];
293 uvchr_to_utf8(tmpbuf, c);
294 return is_utf8_xidcont(tmpbuf);
297 static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
298 bool at_start, at_substart;
300 SV *sv = sentinel_mortalize(sen, newSVpvs(""));
305 at_start = at_substart = TRUE;
306 c = lex_peek_unichar(0);
309 if (at_substart ? my_is_uni_xidfirst(aTHX_ c) : my_is_uni_xidcont(aTHX_ c)) {
311 my_sv_cat_c(aTHX_ sv, c);
313 c = lex_peek_unichar(0);
314 } else if (allow_package && !at_substart && c == '\'') {
316 c = lex_peek_unichar(0);
317 if (!my_is_uni_xidfirst(aTHX_ c)) {
318 lex_stuff_pvs("'", 0);
323 } else if (allow_package && (at_start || !at_substart) && c == ':') {
325 if (lex_peek_unichar(0) != ':') {
326 lex_stuff_pvs(":", 0);
330 c = lex_peek_unichar(0);
331 if (!my_is_uni_xidfirst(aTHX_ c)) {
332 lex_stuff_pvs("::", 0);
343 return SvCUR(sv) ? sv : NULL;
346 static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
351 start = CopLINE(PL_curcop);
353 sv = sentinel_mortalize(sen, newSVpvs(""));
360 c = lex_read_unichar(0);
362 CopLINE_set(PL_curcop, start);
367 c = lex_read_unichar(0);
369 CopLINE_set(PL_curcop, start);
372 if (keep_backslash || (c != '(' && c != ')')) {
375 } else if (c == '(') {
377 } else if (c == ')') {
384 my_sv_cat_c(aTHX_ sv, c);
390 static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
391 char *start, *r, *w, *end;
395 start = SvPV(proto, len);
398 for (w = r = start; r < end; r++) {
404 SvCUR_set(proto, w - start);
408 if (!ckWARN(WARN_ILLEGALPROTO)) {
412 /* check for bad characters */
413 if (strspn(start, "$@%*;[]&\\_+") != len) {
414 SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
416 packWARN(WARN_ILLEGALPROTO),
417 "Illegal character in prototype for %"SVf" : %s",
426 : pv_pretty(dsv, start, len, 60, NULL, NULL,
427 PERL_PV_ESCAPE_NONASCII
433 for (r = start; r < end; r++) {
437 packWARN(WARN_ILLEGALPROTO),
438 "Illegal character in prototype for %"SVf" : %s",
439 SVfARG(declarator), r
444 if (r[1] && !strchr(";@%", *r)) {
446 packWARN(WARN_ILLEGALPROTO),
447 "Illegal character after '_' in prototype for %"SVf" : %s",
448 SVfARG(declarator), r
458 packWARN(WARN_ILLEGALPROTO),
459 "prototype after '%c' for %"SVf": %s",
460 *r, SVfARG(declarator), r + 1
468 if (strchr("$@%&*", *r)) {
473 for (; r < end && *r != ']'; r++) {
474 if (!strchr("$@%&*", *r)) {
478 if (*r == ']' && r[-1] != '[') {
483 packWARN(WARN_ILLEGALPROTO),
484 "Illegal character after '\\' in prototype for %"SVf" : %s",
485 SVfARG(declarator), r
499 static SV *parse_type(pTHX_ Sentinel, const SV *);
501 static SV *parse_type_paramd(pTHX_ Sentinel sen, const SV *declarator) {
505 t = my_scan_word(aTHX_ sen, TRUE);
508 c = lex_peek_unichar(0);
514 my_sv_cat_c(aTHX_ t, c);
516 u = parse_type(aTHX_ sen, declarator);
519 c = lex_peek_unichar(0);
521 croak("In %"SVf": missing ']' after '%"SVf"'", SVfARG(declarator), SVfARG(t));
526 my_sv_cat_c(aTHX_ t, c);
532 static SV *parse_type(pTHX_ Sentinel sen, const SV *declarator) {
536 t = parse_type_paramd(aTHX_ sen, declarator);
538 c = lex_peek_unichar(0);
545 my_sv_cat_c(aTHX_ t, c);
546 u = parse_type_paramd(aTHX_ sen, declarator);
549 c = lex_peek_unichar(0);
555 static SV *reify_type(pTHX_ Sentinel sen, const SV *declarator, SV *name) {
568 n = call_pv("Moose::Util::TypeConstraints::find_or_parse_type_constraint", G_SCALAR);
572 t = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
579 croak("In %"SVf": undefined type '%"SVf"'", SVfARG(declarator), SVfARG(name));
592 DEFSTRUCT(ParamInit) {
597 #define VEC(B) B ## _Vec
599 #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
605 DEFVECTOR(ParamInit);
607 #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
610 Newx(p->data, p->size, B); \
611 } static void N(VEC(B) *)
613 DEFSTRUCT(ParamSpec) {
615 VEC(Param) positional_required;
616 VEC(ParamInit) positional_optional;
617 VEC(Param) named_required;
618 VEC(ParamInit) named_optional;
623 DEFVECTOR_INIT(pv_init, Param);
624 DEFVECTOR_INIT(piv_init, ParamInit);
626 static void p_init(Param *p) {
628 p->padoff = NOT_IN_PAD;
632 static void ps_init(ParamSpec *ps) {
633 p_init(&ps->invocant);
634 pv_init(&ps->positional_required);
635 piv_init(&ps->positional_optional);
636 pv_init(&ps->named_required);
637 piv_init(&ps->named_optional);
639 ps->rest_hash = NOT_IN_PAD;
642 #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
643 assert(p->used <= p->size); \
644 if (p->used == p->size) { \
645 const size_t n = p->size / 2 * 3 + 1; \
646 Renew(p->data, n, B); \
649 return &p->data[p->used]; \
650 } static B (*N(VEC(B) *))
652 DEFVECTOR_EXTEND(pv_extend, Param);
653 DEFVECTOR_EXTEND(piv_extend, ParamInit);
655 #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
658 F(aTHX_ &p->data[p->used]); \
663 } static void N(pTHX_ VEC(B) *)
665 static void p_clear(pTHX_ Param *p) {
667 p->padoff = NOT_IN_PAD;
671 static void pi_clear(pTHX_ ParamInit *pi) {
672 p_clear(aTHX_ &pi->param);
679 DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
680 DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
682 static void ps_clear(pTHX_ ParamSpec *ps) {
683 p_clear(aTHX_ &ps->invocant);
685 pv_clear(aTHX_ &ps->positional_required);
686 piv_clear(aTHX_ &ps->positional_optional);
688 pv_clear(aTHX_ &ps->named_required);
689 piv_clear(aTHX_ &ps->named_optional);
691 p_clear(aTHX_ &ps->slurpy);
694 static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
697 if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
701 for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
702 if (sv_eq(sv, ps->positional_required.data[i].name)) {
707 for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
708 if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
713 for (i = 0, lim = ps->named_required.used; i < lim; i++) {
714 if (sv_eq(sv, ps->named_required.data[i].name)) {
719 for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
720 if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
728 static void ps_free_void(pTHX_ void *p) {
733 static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
736 return SvTRUE(ks->shift) ? 1 : 0;
738 if (ps->invocant.name) {
741 n += ps->positional_required.used;
742 n += ps->named_required.used * 2;
746 static int args_max(const ParamSpec *ps) {
751 if (ps->invocant.name) {
754 n += ps->positional_required.used;
755 n += ps->positional_optional.used;
756 if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
762 static size_t count_positional_params(const ParamSpec *ps) {
763 return ps->positional_required.used + ps->positional_optional.used;
766 static size_t count_named_params(const ParamSpec *ps) {
767 return ps->named_required.used + ps->named_optional.used;
770 static void my_require(pTHX_ const char *file) {
777 static SV *my_eval(pTHX_ Sentinel sen, I32 floor, OP *op) {
782 cv = newATTRSUB(floor, NULL, NULL, NULL, op);
788 call_sv((SV *)cv, G_SCALAR | G_NOARGS);
790 sv = sentinel_mortalize(sen, SvREFCNT_inc(POPs));
800 PARAM_INVOCANT = 0x01,
804 /* *pinit must be NULL on entry.
805 * caller must free *pinit on error.
807 static PADOFFSET parse_param(
810 const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
811 int *pflags, SV **pname, OP **pinit, SV **ptype
815 SV *name, *typeobj, *typename;
821 c = lex_peek_unichar(0);
823 if (spec->flags & FLAG_TYPES_OK) {
830 floor = start_subparse(FALSE, CVf_ANON);
832 if (!(expr = parse_fullexpr(PARSE_OPTIONAL))) {
833 croak("In %"SVf": invalid type expression", SVfARG(declarator));
835 sentinel_register(sen, expr, free_op_void);
838 c = lex_peek_unichar(0);
840 croak("In %"SVf": missing ')' after type expression", SVfARG(declarator));
845 *ptype = my_eval(aTHX_ sen, floor, expr);
846 if (!sv_isobject(*ptype)) {
847 croak("In %"SVf": (%"SVf") doesn't look like a type object", SVfARG(declarator), SVfARG(*ptype));
850 c = lex_peek_unichar(0);
851 } else if (my_is_uni_xidfirst(aTHX_ c)) {
852 typename = parse_type(aTHX_ sen, declarator);
853 my_require(aTHX_ "Moose/Util/TypeConstraints.pm");
854 typeobj = reify_type(aTHX_ sen, declarator, typename);
857 c = lex_peek_unichar(0);
865 *pflags |= PARAM_NAMED;
867 c = lex_peek_unichar(0);
871 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
874 if (!(c == '$' || c == '@' || c == '%')) {
875 croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
883 if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
884 croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
886 sv_insert(name, 0, 0, &sigil, 1);
890 c = lex_peek_unichar(0);
897 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
898 param_spec->invocant.name = spec->shift;
899 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
902 *pinit = parse_termexpr(0);
905 c = lex_peek_unichar(0);
909 *pflags |= PARAM_INVOCANT;
912 } else if (c == ',') {
915 } else if (c != ')') {
917 croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
919 croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
922 return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
925 static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
926 OP *var = newOP(type, flags);
927 var->op_targ = padoff;
931 static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
932 return my_var_g(aTHX_ OP_PADSV, flags, padoff);
935 static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
936 OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
937 return newBINOP(OP_HELEM, 0, hv, k);
940 static OP *mkconstsv(pTHX_ SV *sv) {
941 return newSVOP(OP_CONST, 0, sv);
944 static OP *mkconstiv(pTHX_ IV i) {
945 return mkconstsv(aTHX_ newSViv(i));
948 static OP *mkconstpv(pTHX_ const char *p, size_t n) {
949 return mkconstsv(aTHX_ newSVpv(p, n));
952 #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
954 static OP *mktypecheck(pTHX_ const SV *declarator, int nr, SV *name, PADOFFSET padoff, SV *type) {
955 /* $type->check($value) or Carp::croak "...: " . $type->get_message($value) */
956 OP *chk, *cond, *err, *msg, *xcroak;
958 err = mkconstsv(aTHX_ newSVpvf("In %"SVf": parameter %d (%"SVf"): ", SVfARG(declarator), nr, SVfARG(name)));
962 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
963 args = op_append_elem(
967 : my_var(aTHX_ 0, padoff)
969 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("get_message")));
972 msg->op_type = OP_ENTERSUB;
973 msg->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
974 msg->op_flags |= OPf_STACKED;
977 msg = newBINOP(OP_CONCAT, 0, err, msg);
981 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
983 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
988 args = op_append_elem(OP_LIST, args, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(type)));
989 args = op_append_elem(
993 : my_var(aTHX_ 0, padoff)
995 args = op_append_elem(OP_LIST, args, newUNOP(OP_METHOD, 0, mkconstpvs("check")));
998 chk->op_type = OP_ENTERSUB;
999 chk->op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1000 chk->op_flags |= OPf_STACKED;
1003 chk = newLOGOP(OP_OR, 0, chk, xcroak);
1007 static OP *mktypecheckp(pTHX_ const SV *declarator, int nr, const Param *param) {
1008 return mktypecheck(aTHX_ declarator, nr, param->name, param->padoff, param->type);
1011 static void register_info(pTHX_ UV key, SV *declarator, const KWSpec *kws, const ParamSpec *ps) {
1025 char *p = SvPV(declarator, n);
1026 char *q = memchr(p, ' ', n);
1027 mPUSHp(p, q ? q - p : n);
1030 if (SvTRUE(kws->shift)) {
1036 mPUSHs(newRV_noinc((SV *)newAV()));
1037 mPUSHs(newRV_noinc((SV *)newAV()));
1038 mPUSHs(newRV_noinc((SV *)newAV()));
1039 mPUSHs(newRV_noinc((SV *)newAV()));
1044 if (ps->invocant.name) {
1045 PUSHs(ps->invocant.name);
1046 if (ps->invocant.type) {
1047 PUSHs(ps->invocant.type);
1060 lim = ps->positional_required.used;
1064 av_extend(av, (lim - 1) * 2);
1065 for (i = 0; i < lim; i++) {
1066 Param *cur = &ps->positional_required.data[i];
1067 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1068 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1072 mPUSHs(newRV_noinc((SV *)av));
1078 lim = ps->positional_optional.used;
1082 av_extend(av, (lim - 1) * 2);
1083 for (i = 0; i < lim; i++) {
1084 Param *cur = &ps->positional_optional.data[i].param;
1085 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1086 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1090 mPUSHs(newRV_noinc((SV *)av));
1096 lim = ps->named_required.used;
1100 av_extend(av, (lim - 1) * 2);
1101 for (i = 0; i < lim; i++) {
1102 Param *cur = &ps->named_required.data[i];
1103 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1104 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1108 mPUSHs(newRV_noinc((SV *)av));
1114 lim = ps->named_optional.used;
1118 av_extend(av, (lim - 1) * 2);
1119 for (i = 0; i < lim; i++) {
1120 Param *cur = &ps->named_optional.data[i].param;
1121 av_push(av, SvREFCNT_inc_simple_NN(cur->name));
1122 av_push(av, cur->type ? SvREFCNT_inc_simple_NN(cur->type) : &PL_sv_undef);
1126 mPUSHs(newRV_noinc((SV *)av));
1129 if (ps->slurpy.name) {
1130 PUSHs(ps->slurpy.name);
1131 if (ps->slurpy.type) {
1132 PUSHs(ps->slurpy.type);
1144 call_pv(MY_PKG "::_register_info", G_VOID);
1150 static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
1151 ParamSpec *param_spec;
1156 OP **prelude_sentinel;
1158 OP **attrs_sentinel, *body;
1159 unsigned builtin_attrs;
1162 declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
1170 if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
1172 if (PL_parser->expect != XSTATE) {
1173 /* bail out early so we don't predeclare $saw_name */
1174 croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
1177 sv_catpvs(declarator, " ");
1178 sv_catsv(declarator, saw_name);
1181 sv_eq_pvs(saw_name, "BEGIN") ||
1182 sv_eq_pvs(saw_name, "END") ||
1183 sv_eq_pvs(saw_name, "INIT") ||
1184 sv_eq_pvs(saw_name, "CHECK") ||
1185 sv_eq_pvs(saw_name, "UNITCHECK")
1187 builtin_attrs |= MY_ATTR_SPECIAL;
1191 } else if (!(spec->flags & FLAG_ANON_OK)) {
1192 croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
1194 sv_catpvs(declarator, " (anon)");
1197 /* we're a subroutine declaration */
1198 floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
1199 SAVEFREESV(PL_compcv);
1201 /* create outer block: '{' */
1202 save_ix = S_block_start(aTHX_ TRUE);
1204 /* initialize synthetic optree */
1205 Newx(prelude_sentinel, 1, OP *);
1206 *prelude_sentinel = NULL;
1207 sentinel_register(sen, prelude_sentinel, free_ptr_op_void);
1212 c = lex_peek_unichar(0);
1216 Newx(init_sentinel, 1, OP *);
1217 *init_sentinel = NULL;
1218 sentinel_register(sen, init_sentinel, free_ptr_op_void);
1220 Newx(param_spec, 1, ParamSpec);
1221 ps_init(param_spec);
1222 sentinel_register(sen, param_spec, ps_free_void);
1224 lex_read_unichar(0);
1227 while ((c = lex_peek_unichar(0)) != ')') {
1233 padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel, &type);
1237 sigil = SvPV_nolen(name)[0];
1239 /* internal consistency */
1240 if (flags & PARAM_NAMED) {
1241 if (flags & PARAM_INVOCANT) {
1242 croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
1245 croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1247 } else if (flags & PARAM_INVOCANT) {
1248 if (*init_sentinel) {
1249 croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
1252 croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
1254 } else if (sigil != '$' && *init_sentinel) {
1255 croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
1258 /* external constraints */
1259 if (param_spec->slurpy.name) {
1260 croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
1263 assert(!*init_sentinel);
1264 param_spec->slurpy.name = name;
1265 param_spec->slurpy.padoff = padoff;
1266 param_spec->slurpy.type = type;
1270 if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
1271 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));
1274 if (flags & PARAM_INVOCANT) {
1275 if (param_spec->invocant.name) {
1276 croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
1278 if (count_positional_params(param_spec) || count_named_params(param_spec)) {
1279 croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
1281 if (!(spec->flags & FLAG_INVOCANT)) {
1282 croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1284 param_spec->invocant.name = name;
1285 param_spec->invocant.padoff = padoff;
1286 param_spec->invocant.type = type;
1290 if (*init_sentinel && !(spec->flags & FLAG_DEFAULT_ARGS)) {
1291 croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1294 if (ps_contains(aTHX_ param_spec, name)) {
1295 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
1298 if (flags & PARAM_NAMED) {
1299 if (!(spec->flags & FLAG_NAMED_PARAMS)) {
1300 croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
1303 if (*init_sentinel) {
1304 ParamInit *pi = piv_extend(¶m_spec->named_optional);
1305 pi->param.name = name;
1306 pi->param.padoff = padoff;
1307 pi->param.type = type;
1308 pi->init = *init_sentinel;
1309 *init_sentinel = NULL;
1310 param_spec->named_optional.used++;
1312 if (param_spec->positional_optional.used) {
1313 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));
1316 Param *p = pv_extend(¶m_spec->named_required);
1320 param_spec->named_required.used++;
1323 if (*init_sentinel || param_spec->positional_optional.used) {
1324 ParamInit *pi = piv_extend(¶m_spec->positional_optional);
1325 pi->param.name = name;
1326 pi->param.padoff = padoff;
1327 pi->param.type = type;
1328 pi->init = *init_sentinel;
1329 *init_sentinel = NULL;
1330 param_spec->positional_optional.used++;
1332 Param *p = pv_extend(¶m_spec->positional_required);
1336 param_spec->positional_required.used++;
1341 lex_read_unichar(0);
1343 *init_sentinel = NULL;
1345 if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
1346 if (ps_contains(aTHX_ param_spec, spec->shift)) {
1347 croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
1350 param_spec->invocant.name = spec->shift;
1351 param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
1357 c = lex_peek_unichar(0);
1359 lex_read_unichar(0);
1362 c = lex_peek_unichar(0);
1364 lex_stuff_pvs(":", 0);
1367 lex_read_unichar(0);
1368 if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
1369 croak("In %"SVf": prototype not terminated", SVfARG(declarator));
1371 my_check_prototype(aTHX_ sen, declarator, proto);
1373 c = lex_peek_unichar(0);
1374 if (!(c == ':' || c == '{')) {
1375 lex_stuff_pvs(":", 0);
1382 Newx(attrs_sentinel, 1, OP *);
1383 *attrs_sentinel = NULL;
1384 sentinel_register(sen, attrs_sentinel, free_ptr_op_void);
1386 if (c == ':' || c == '{') /* '}' - hi, vim */ {
1388 /* kludge default attributes in */
1389 if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
1390 lex_stuff_sv(spec->attrs, 0);
1395 lex_read_unichar(0);
1397 c = lex_peek_unichar(0);
1402 if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
1407 c = lex_peek_unichar(0);
1410 if (sv_eq_pvs(attr, "lvalue")) {
1411 builtin_attrs |= MY_ATTR_LVALUE;
1413 } else if (sv_eq_pvs(attr, "method")) {
1414 builtin_attrs |= MY_ATTR_METHOD;
1419 lex_read_unichar(0);
1420 if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
1421 croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
1423 sv_catpvs(attr, "(");
1425 sv_catpvs(attr, ")");
1428 c = lex_peek_unichar(0);
1432 *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr)));
1436 lex_read_unichar(0);
1438 c = lex_peek_unichar(0);
1445 if (c != '{') /* '}' - hi, vim */ {
1446 croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
1449 /* surprise predeclaration! */
1451 /* 'sub NAME (PROTO);' to make name/proto known to perl before it
1452 starts parsing the body */
1453 const I32 sub_ix = start_subparse(FALSE, 0);
1454 SAVEFREESV(PL_compcv);
1456 SvREFCNT_inc_simple_void(PL_compcv);
1460 mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
1461 proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
1467 if (builtin_attrs & MY_ATTR_LVALUE) {
1468 CvLVALUE_on(PL_compcv);
1470 if (builtin_attrs & MY_ATTR_METHOD) {
1471 CvMETHOD_on(PL_compcv);
1473 if (builtin_attrs & MY_ATTR_SPECIAL) {
1474 CvSPECIAL_on(PL_compcv);
1477 /* check number of arguments */
1478 if (spec->flags & FLAG_CHECK_NARGS) {
1482 amin = args_min(aTHX_ param_spec, spec);
1484 OP *chk, *cond, *err, *xcroak;
1486 err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
1490 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1498 xcroak = newCVREF(OPf_WANT_SCALAR,
1499 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
1500 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1501 op_append_elem(OP_LIST, err, xcroak));
1503 cond = newBINOP(OP_LT, 0,
1504 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1505 mkconstiv(aTHX_ amin));
1506 chk = newLOGOP(OP_AND, 0, cond, err);
1508 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1511 amax = args_max(param_spec);
1513 OP *chk, *cond, *err, *xcroak;
1515 err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
1519 newAVREF(newGVOP(OP_GV, 0, PL_defgv))
1529 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1531 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1532 op_append_elem(OP_LIST, err, xcroak));
1536 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1537 mkconstiv(aTHX_ amax)
1539 chk = newLOGOP(OP_AND, 0, cond, err);
1541 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1544 if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
1545 OP *chk, *cond, *err, *xcroak;
1546 const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
1548 err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator)));
1552 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1554 err = newUNOP(OP_ENTERSUB, OPf_STACKED,
1555 op_append_elem(OP_LIST, err, xcroak));
1557 cond = newBINOP(OP_GT, 0,
1558 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1559 mkconstiv(aTHX_ fixed));
1560 cond = newLOGOP(OP_AND, 0,
1562 newBINOP(OP_MODULO, 0,
1564 ? newBINOP(OP_SUBTRACT, 0,
1565 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1566 mkconstiv(aTHX_ fixed))
1567 : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1568 mkconstiv(aTHX_ 2)));
1569 chk = newLOGOP(OP_AND, 0, cond, err);
1571 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
1576 /* my $invocant = shift; */
1577 if (SvTRUE(spec->shift)) {
1582 OPf_MOD | (OPpLVAL_INTRO << 8),
1583 pad_add_name_sv(spec->shift, 0, NULL, NULL)
1585 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1587 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1590 /* my $invocant = shift; */
1591 if (param_spec->invocant.name) {
1596 OPf_MOD | (OPpLVAL_INTRO << 8),
1597 param_spec->invocant.padoff
1599 var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
1601 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1603 if (param_spec->invocant.type && (spec->flags & FLAG_CHECK_TARGS)) {
1604 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, 0, ¶m_spec->invocant)));
1608 /* my (...) = @_; */
1615 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1616 OP *const var = my_var(
1618 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1619 param_spec->positional_required.data[i].padoff
1621 lhs = op_append_elem(OP_LIST, lhs, var);
1624 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1625 OP *const var = my_var(
1627 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1628 param_spec->positional_optional.data[i].param.padoff
1630 lhs = op_append_elem(OP_LIST, lhs, var);
1640 * 1) no named params
1647 * => synthetic %{rest}
1648 * 2.2) slurpy is a hash
1650 * 2.3) slurpy is an array
1651 * => synthetic %{rest}
1652 * remember to declare array later
1655 slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
1656 if (!count_named_params(param_spec)) {
1657 if (param_spec->slurpy.name) {
1658 padoff = param_spec->slurpy.padoff;
1659 type = slurpy_hash ? OP_PADHV : OP_PADAV;
1661 padoff = NOT_IN_PAD;
1664 } else if (slurpy_hash) {
1665 padoff = param_spec->slurpy.padoff;
1668 padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
1672 if (padoff != NOT_IN_PAD) {
1673 OP *const var = my_var_g(
1676 OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
1680 lhs = op_append_elem(OP_LIST, lhs, var);
1682 if (type == OP_PADHV) {
1683 param_spec->rest_hash = padoff;
1690 lhs->op_flags |= OPf_PARENS;
1691 rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
1693 *prelude_sentinel = op_append_list(
1694 OP_LINESEQ, *prelude_sentinel,
1697 newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
1703 /* default positional arguments */
1710 req = param_spec->positional_required.used;
1711 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1712 ParamInit *cur = ¶m_spec->positional_optional.data[i];
1717 newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
1718 mkconstiv(aTHX_ req + i + 1)
1721 var = my_var(aTHX_ 0, cur->param.padoff);
1723 nest = op_append_list(
1725 newASSIGNOP(OPf_STACKED, var, 0, cur->init)
1736 *prelude_sentinel = op_append_list(
1737 OP_LINESEQ, *prelude_sentinel,
1742 /* named parameters */
1743 if (count_named_params(param_spec)) {
1746 assert(param_spec->rest_hash != NOT_IN_PAD);
1748 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1749 Param *cur = ¶m_spec->named_required.data[i];
1751 char *p = SvPV(cur->name, n);
1754 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1756 if (spec->flags & FLAG_CHECK_NARGS) {
1759 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1760 var = newUNOP(OP_DELETE, 0, var);
1762 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
1765 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1767 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1769 cond = newUNOP(OP_EXISTS, 0, cond);
1771 cond = newCONDOP(0, cond, var, xcroak);
1776 OPf_MOD | (OPpLVAL_INTRO << 8),
1779 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1781 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1784 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1785 ParamInit *cur = ¶m_spec->named_optional.data[i];
1787 char *p = SvPV(cur->param.name, n);
1790 var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1791 var = newUNOP(OP_DELETE, 0, var);
1793 cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
1794 cond = newUNOP(OP_EXISTS, 0, cond);
1796 cond = newCONDOP(0, cond, var, cur->init);
1801 OPf_MOD | (OPpLVAL_INTRO << 8),
1804 var = newASSIGNOP(OPf_STACKED, var, 0, cond);
1806 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1809 if (!param_spec->slurpy.name) {
1810 if (spec->flags & FLAG_CHECK_NARGS) {
1811 /* croak if %{rest} */
1812 OP *xcroak, *cond, *keys, *msg;
1814 keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1815 keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
1817 OP *first, *mid, *last;
1821 mid = mkconstpvs(", ");
1822 mid->op_sibling = last;
1824 first = newOP(OP_PUSHMARK, 0);
1826 keys = newLISTOP(OP_JOIN, 0, first, mid);
1827 keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
1828 ((LISTOP *)keys)->op_last = last;
1831 msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
1832 msg = newBINOP(OP_CONCAT, 0, msg, keys);
1836 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
1838 xcroak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, xcroak));
1840 cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1841 xcroak = newCONDOP(0, cond, xcroak, NULL);
1843 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, xcroak));
1847 clear = newASSIGNOP(
1849 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1854 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1856 } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
1859 assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
1864 OPf_MOD | (OPpLVAL_INTRO << 8),
1865 param_spec->slurpy.padoff
1868 var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
1870 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
1872 clear = newASSIGNOP(
1874 my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
1879 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
1883 if (spec->flags & FLAG_CHECK_TARGS) {
1884 size_t i, lim, base;
1887 for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
1888 Param *cur = ¶m_spec->positional_required.data[i];
1891 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1896 for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
1897 Param *cur = ¶m_spec->positional_optional.data[i].param;
1900 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1905 for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
1906 Param *cur = ¶m_spec->named_required.data[i];
1909 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1914 for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
1915 Param *cur = ¶m_spec->named_optional.data[i].param;
1918 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, mktypecheckp(aTHX_ declarator, base + i, cur)));
1923 if (param_spec->slurpy.type) {
1924 /* $type->valid($_) or croak $type->get_message($_) for @rest / values %rest */
1925 OP *body, *list, *loop;
1927 body = mktypecheck(aTHX_ declarator, base, param_spec->slurpy.name, NOT_IN_PAD, param_spec->slurpy.type);
1929 if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
1930 list = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
1932 list = my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff);
1933 list = newUNOP(OP_VALUES, 0, list);
1936 loop = newFOROP(0, NULL, list, body, NULL);
1938 *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, loop));
1943 /* finally let perl parse the actual subroutine body */
1944 body = parse_block(0);
1946 /* add '();' to make function return nothing by default */
1947 /* (otherwise the invisible parameter initialization can "leak" into
1948 the return value: fun ($x) {}->("asdf", 0) == 2) */
1949 if (*prelude_sentinel) {
1950 body = newSTATEOP(0, NULL, body);
1953 body = op_append_list(OP_LINESEQ, *prelude_sentinel, body);
1954 *prelude_sentinel = NULL;
1959 OP *const attrs = *attrs_sentinel;
1960 *attrs_sentinel = NULL;
1962 SvREFCNT_inc_simple_void(PL_compcv);
1964 /* close outer block: '}' */
1965 S_block_end(aTHX_ save_ix, body);
1969 saw_name ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)) : NULL,
1970 proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
1975 register_info(aTHX_ PTR2UV(CvROOT(cv)), declarator, spec, param_spec);
1978 *pop = newOP(OP_NULL, 0);
1979 return KEYWORD_PLUGIN_STMT;
1989 return KEYWORD_PLUGIN_EXPR;
1993 static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
1996 Sentinel sen = { NULL };
2001 SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
2003 if (kw_flags(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
2004 ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
2006 ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
2017 MODULE = Function::Parameters PACKAGE = Function::Parameters PREFIX = fp_
2028 cv = sv_2cv(sv, &hv, &gv, 0);
2029 RETVAL = PTR2UV(cv ? CvROOT(cv) : NULL);
2035 HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
2037 newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
2038 newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
2039 newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
2040 newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
2041 newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
2042 newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
2043 newCONSTSUB(stash, "FLAG_TYPES_OK", newSViv(FLAG_TYPES_OK));
2044 newCONSTSUB(stash, "FLAG_CHECK_TARGS", newSViv(FLAG_CHECK_TARGS));
2045 newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
2046 newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
2047 newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
2048 newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
2050 next_keyword_plugin = PL_keyword_plugin;
2051 PL_keyword_plugin = my_keyword_plugin;