Commit | Line | Data |
db81d362 |
1 | /* |
2 | Copyright 2012 Lukas Mai. |
3 | |
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. |
7 | |
8 | See http://dev.perl.org/licenses/ for more information. |
9 | */ |
10 | |
11 | #ifdef __GNUC__ |
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) |
15 | #endif |
16 | #endif |
17 | |
18 | #ifndef PRAGMA_GCC |
19 | #define PRAGMA_GCC(X) |
20 | #endif |
21 | |
22 | #ifdef DEVEL |
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) \ |
c3e72f35 |
29 | /* WARNINGS_ENABLEW(-Wshadow) :-( */ \ |
db81d362 |
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) |
38 | |
39 | #else |
40 | #define WARNINGS_RESET |
1bc47886 |
41 | #define WARNINGS_ENABLE |
db81d362 |
42 | #endif |
43 | |
44 | |
7dd35535 |
45 | #define PERL_NO_GET_CONTEXT |
db81d362 |
46 | #include "EXTERN.h" |
47 | #include "perl.h" |
48 | #include "XSUB.h" |
49 | |
50 | #include <string.h> |
51 | |
63915d26 |
52 | |
db81d362 |
53 | WARNINGS_ENABLE |
54 | |
db81d362 |
55 | |
7dd35535 |
56 | #define HAVE_PERL_VERSION(R, V, S) \ |
57 | (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S)))))) |
58 | |
de013990 |
59 | #if HAVE_PERL_VERSION(5, 16, 0) |
60 | #define IF_HAVE_PERL_5_16(YES, NO) YES |
61 | #else |
62 | #define IF_HAVE_PERL_5_16(YES, NO) NO |
63 | #endif |
64 | |
e158cf8f |
65 | #if 0 |
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) |
69 | #define S_KEY_my 134 |
70 | #elif HAVE_PERL_VERSION(5, 15, 6) |
71 | #define S_KEY_my 133 |
72 | #elif HAVE_PERL_VERSION(5, 15, 5) |
73 | #define S_KEY_my 132 |
74 | #elif HAVE_PERL_VERSION(5, 13, 0) |
75 | #define S_KEY_my 131 |
76 | #else |
77 | #error "internal error: missing definition of KEY_my (your perl is too old)" |
78 | #endif |
79 | #endif |
80 | |
63915d26 |
81 | |
82 | #define MY_PKG "Function::Parameters" |
83 | |
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 | |
89 | #define DEFSTRUCT(T) typedef struct T T; struct T |
90 | |
0f875412 |
91 | #define UV_BITS (sizeof (UV) * CHAR_BIT) |
63915d26 |
92 | |
93 | enum { |
94 | FLAG_NAME_OK = 0x01, |
95 | FLAG_ANON_OK = 0x02, |
96 | FLAG_DEFAULT_ARGS = 0x04, |
d8e5d540 |
97 | FLAG_CHECK_NARGS = 0x08, |
e158cf8f |
98 | FLAG_INVOCANT = 0x10, |
99 | FLAG_NAMED_PARAMS = 0x20 |
63915d26 |
100 | }; |
101 | |
102 | DEFSTRUCT(KWSpec) { |
103 | unsigned flags; |
b72eb6ee |
104 | SV *shift; |
105 | SV *attrs; |
63915d26 |
106 | }; |
db81d362 |
107 | |
108 | static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **); |
109 | |
63915d26 |
110 | static int kw_flags(pTHX_ const char *kw_ptr, STRLEN kw_len, KWSpec *spec) { |
db81d362 |
111 | HV *hints; |
112 | SV *sv, **psv; |
113 | const char *p, *kw_active; |
114 | STRLEN kw_active_len; |
115 | |
63915d26 |
116 | spec->flags = 0; |
b72eb6ee |
117 | spec->shift = sv_2mortal(newSVpvs("")); |
118 | spec->attrs = sv_2mortal(newSVpvs("")); |
db81d362 |
119 | |
120 | if (!(hints = GvHV(PL_hintgv))) { |
121 | return FALSE; |
122 | } |
123 | if (!(psv = hv_fetchs(hints, HINTK_KEYWORDS, 0))) { |
124 | return FALSE; |
125 | } |
126 | sv = *psv; |
127 | kw_active = SvPV(sv, kw_active_len); |
128 | if (kw_active_len <= kw_len) { |
129 | return FALSE; |
130 | } |
e88490f6 |
131 | for ( |
132 | p = kw_active; |
133 | (p = strchr(p, *kw_ptr)) && |
134 | p < kw_active + kw_active_len - kw_len; |
135 | p++ |
136 | ) { |
db81d362 |
137 | if ( |
138 | (p == kw_active || p[-1] == ' ') && |
139 | p[kw_len] == ' ' && |
140 | memcmp(kw_ptr, p, kw_len) == 0 |
141 | ) { |
b72eb6ee |
142 | |
d970c3e7 |
143 | #define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \ |
b72eb6ee |
144 | const char *fk_ptr_; \ |
145 | STRLEN fk_len_; \ |
146 | SV *fk_sv_; \ |
147 | fk_sv_ = sv_2mortal(newSVpvs(HINTK_ ## NAME)); \ |
148 | sv_catpvn(fk_sv_, PTR, LEN); \ |
149 | fk_ptr_ = SvPV(fk_sv_, fk_len_); \ |
150 | if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \ |
151 | croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \ |
152 | } \ |
d970c3e7 |
153 | } STMT_END |
b72eb6ee |
154 | |
63915d26 |
155 | FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv); |
156 | spec->flags = SvIV(*psv); |
db81d362 |
157 | |
b72eb6ee |
158 | FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv); |
159 | SvSetSV(spec->shift, *psv); |
db81d362 |
160 | |
b72eb6ee |
161 | FETCH_HINTK_INTO(ATTRS_, kw_ptr, kw_len, psv); |
162 | SvSetSV(spec->attrs, *psv); |
163 | |
164 | #undef FETCH_HINTK_INTO |
db81d362 |
165 | return TRUE; |
166 | } |
167 | } |
168 | return FALSE; |
169 | } |
170 | |
171 | |
311ced6f |
172 | static void free_ptr_op(pTHX_ void *vp) { |
c311cef3 |
173 | OP **pp = vp; |
174 | op_free(*pp); |
175 | Safefree(pp); |
176 | } |
177 | |
59016bfb |
178 | #define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1) |
c311cef3 |
179 | |
59016bfb |
180 | static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) { |
c311cef3 |
181 | STRLEN sv_len; |
182 | const char *sv_p = SvPV(sv, sv_len); |
59016bfb |
183 | return memcmp(sv_p, p, n) == 0; |
c311cef3 |
184 | } |
185 | |
186 | |
187 | #include "padop_on_crack.c.inc" |
188 | |
189 | |
c311cef3 |
190 | enum { |
191 | MY_ATTR_LVALUE = 0x01, |
192 | MY_ATTR_METHOD = 0x02, |
193 | MY_ATTR_SPECIAL = 0x04 |
194 | }; |
195 | |
31534187 |
196 | static void my_sv_cat_c(pTHX_ SV *sv, U32 c) { |
197 | char ds[UTF8_MAXBYTES + 1], *d; |
198 | d = uvchr_to_utf8(ds, c); |
199 | if (d - ds > 1) { |
200 | sv_utf8_upgrade(sv); |
201 | } |
202 | sv_catpvn(sv, ds, d - ds); |
203 | } |
204 | |
205 | static bool my_is_uni_xidfirst(pTHX_ UV c) { |
206 | U8 tmpbuf[UTF8_MAXBYTES + 1]; |
207 | uvchr_to_utf8(tmpbuf, c); |
208 | return is_utf8_xidfirst(tmpbuf); |
209 | } |
210 | |
211 | static bool my_is_uni_xidcont(pTHX_ UV c) { |
212 | U8 tmpbuf[UTF8_MAXBYTES + 1]; |
213 | uvchr_to_utf8(tmpbuf, c); |
214 | return is_utf8_xidcont(tmpbuf); |
215 | } |
216 | |
217 | static SV *my_scan_word(pTHX_ bool allow_package) { |
218 | bool at_start, at_substart; |
219 | I32 c; |
220 | SV *sv = sv_2mortal(newSVpvs("")); |
221 | if (lex_bufutf8()) { |
222 | SvUTF8_on(sv); |
223 | } |
224 | |
225 | at_start = at_substart = TRUE; |
226 | c = lex_peek_unichar(0); |
227 | |
228 | while (c != -1) { |
229 | if (at_substart ? my_is_uni_xidfirst(aTHX_ c) : my_is_uni_xidcont(aTHX_ c)) { |
230 | lex_read_unichar(0); |
231 | my_sv_cat_c(aTHX_ sv, c); |
232 | at_substart = FALSE; |
233 | c = lex_peek_unichar(0); |
234 | } else if (allow_package && !at_substart && c == '\'') { |
235 | lex_read_unichar(0); |
236 | c = lex_peek_unichar(0); |
237 | if (!my_is_uni_xidfirst(aTHX_ c)) { |
238 | lex_stuff_pvs("'", 0); |
239 | break; |
240 | } |
241 | sv_catpvs(sv, "'"); |
242 | at_substart = TRUE; |
243 | } else if (allow_package && (at_start || !at_substart) && c == ':') { |
244 | lex_read_unichar(0); |
245 | if (lex_peek_unichar(0) != ':') { |
246 | lex_stuff_pvs(":", 0); |
247 | break; |
248 | } |
249 | lex_read_unichar(0); |
250 | c = lex_peek_unichar(0); |
251 | if (!my_is_uni_xidfirst(aTHX_ c)) { |
252 | lex_stuff_pvs("::", 0); |
253 | break; |
254 | } |
255 | sv_catpvs(sv, "::"); |
256 | at_substart = TRUE; |
257 | } else { |
258 | break; |
259 | } |
260 | at_start = FALSE; |
261 | } |
262 | |
263 | return SvCUR(sv) ? sv : NULL; |
264 | } |
265 | |
266 | static SV *my_scan_parens_tail(pTHX_ bool keep_backslash) { |
267 | I32 c, nesting; |
268 | SV *sv; |
269 | line_t start; |
270 | |
271 | start = CopLINE(PL_curcop); |
272 | |
273 | sv = sv_2mortal(newSVpvs("")); |
274 | if (lex_bufutf8()) { |
275 | SvUTF8_on(sv); |
276 | } |
277 | |
278 | nesting = 0; |
279 | for (;;) { |
280 | c = lex_read_unichar(0); |
281 | if (c == EOF) { |
282 | CopLINE_set(PL_curcop, start); |
283 | return NULL; |
284 | } |
285 | |
286 | if (c == '\\') { |
287 | c = lex_read_unichar(0); |
288 | if (c == EOF) { |
289 | CopLINE_set(PL_curcop, start); |
290 | return NULL; |
291 | } |
292 | if (keep_backslash || (c != '(' && c != ')')) { |
293 | sv_catpvs(sv, "\\"); |
294 | } |
295 | } else if (c == '(') { |
296 | nesting++; |
297 | } else if (c == ')') { |
298 | if (!nesting) { |
299 | break; |
300 | } |
301 | nesting--; |
302 | } |
303 | |
304 | my_sv_cat_c(aTHX_ sv, c); |
305 | } |
306 | |
307 | return sv; |
308 | } |
309 | |
310 | static void my_check_prototype(pTHX_ const SV *declarator, SV *proto) { |
311 | char *start, *r, *w, *end; |
312 | STRLEN len; |
313 | |
314 | /* strip spaces */ |
315 | start = SvPV(proto, len); |
316 | end = start + len; |
317 | |
318 | for (w = r = start; r < end; r++) { |
319 | if (!isSPACE(*r)) { |
320 | *w++ = *r; |
321 | } |
322 | } |
323 | *w = '\0'; |
324 | SvCUR_set(proto, w - start); |
325 | end = w; |
326 | len = end - start; |
327 | |
328 | if (!ckWARN(WARN_ILLEGALPROTO)) { |
329 | return; |
330 | } |
331 | |
332 | /* check for bad characters */ |
333 | if (strspn(start, "$@%*;[]&\\_+") != len) { |
334 | SV *dsv = newSVpvs_flags("", SVs_TEMP); |
335 | warner( |
336 | packWARN(WARN_ILLEGALPROTO), |
337 | "Illegal character in prototype for %"SVf" : %s", |
338 | SVfARG(declarator), |
339 | SvUTF8(proto) |
340 | ? sv_uni_display( |
341 | dsv, |
342 | proto, |
343 | len, |
344 | UNI_DISPLAY_ISPRINT |
345 | ) |
346 | : pv_pretty(dsv, start, len, 60, NULL, NULL, |
347 | PERL_PV_ESCAPE_NONASCII |
348 | ) |
349 | ); |
350 | return; |
351 | } |
352 | |
353 | for (r = start; r < end; r++) { |
354 | switch (*r) { |
355 | default: |
356 | warner( |
357 | packWARN(WARN_ILLEGALPROTO), |
358 | "Illegal character in prototype for %"SVf" : %s", |
359 | SVfARG(declarator), r |
360 | ); |
361 | return; |
362 | |
363 | case '_': |
364 | if (r[1] && !strchr(";@%", *r)) { |
365 | warner( |
366 | packWARN(WARN_ILLEGALPROTO), |
367 | "Illegal character after '_' in prototype for %"SVf" : %s", |
368 | SVfARG(declarator), r |
369 | ); |
370 | return; |
371 | } |
372 | break; |
373 | |
374 | case '@': |
375 | case '%': |
376 | if (r[1]) { |
377 | warner( |
378 | packWARN(WARN_ILLEGALPROTO), |
379 | "prototype after '%c' for %"SVf": %s", |
380 | *r, SVfARG(declarator), r + 1 |
381 | ); |
382 | return; |
383 | } |
384 | break; |
385 | |
386 | case '\\': |
387 | r++; |
388 | if (strchr("$@%&*", *r)) { |
389 | break; |
390 | } |
391 | if (*r == '[') { |
392 | r++; |
393 | for (; r < end && *r != ']'; r++) { |
394 | if (!strchr("$@%&*", *r)) { |
395 | break; |
396 | } |
397 | } |
398 | if (*r == ']' && r[-1] != '[') { |
399 | break; |
400 | } |
401 | } |
402 | warner( |
403 | packWARN(WARN_ILLEGALPROTO), |
404 | "Illegal character after '\\' in prototype for %"SVf" : %s", |
405 | SVfARG(declarator), r |
406 | ); |
407 | return; |
408 | |
409 | case '$': |
410 | case '*': |
411 | case '&': |
412 | case ';': |
413 | case '+': |
414 | break; |
415 | } |
416 | } |
417 | } |
418 | |
e158cf8f |
419 | |
420 | DEFSTRUCT(Param) { |
421 | SV *name; |
422 | PADOFFSET padoff; |
423 | }; |
424 | |
425 | DEFSTRUCT(ParamInit) { |
426 | Param param; |
427 | OP *init; |
428 | }; |
429 | |
430 | #define VEC(B) B ## _Vec |
431 | |
432 | #define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \ |
433 | B (*data); \ |
434 | size_t used, size; \ |
435 | } |
436 | |
437 | DEFVECTOR(Param); |
438 | DEFVECTOR(ParamInit); |
439 | |
440 | #define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \ |
441 | p->used = 0; \ |
442 | p->size = 23; \ |
443 | Newx(p->data, p->size, B); \ |
444 | } static void N(VEC(B) *) |
445 | |
446 | DEFSTRUCT(ParamSpec) { |
447 | Param invocant; |
448 | VEC(Param) positional_required; |
449 | VEC(ParamInit) positional_optional; |
450 | VEC(Param) named_required; |
451 | VEC(ParamInit) named_optional; |
452 | Param slurpy; |
fc634bba |
453 | PADOFFSET rest_hash; |
e158cf8f |
454 | }; |
455 | |
456 | DEFVECTOR_INIT(pv_init, Param); |
457 | DEFVECTOR_INIT(piv_init, ParamInit); |
458 | |
459 | static void p_init(Param *p) { |
460 | p->name = NULL; |
461 | p->padoff = NOT_IN_PAD; |
462 | } |
463 | |
464 | static void ps_init(ParamSpec *ps) { |
465 | p_init(&ps->invocant); |
466 | pv_init(&ps->positional_required); |
467 | piv_init(&ps->positional_optional); |
468 | pv_init(&ps->named_required); |
469 | piv_init(&ps->named_optional); |
470 | p_init(&ps->slurpy); |
fc634bba |
471 | ps->rest_hash = NOT_IN_PAD; |
e158cf8f |
472 | } |
473 | |
474 | #define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \ |
475 | assert(p->used <= p->size); \ |
476 | if (p->used == p->size) { \ |
477 | const size_t n = p->size / 2 * 3 + 1; \ |
478 | Renew(p->data, n, B); \ |
479 | p->size = n; \ |
480 | } \ |
481 | return &p->data[p->used]; \ |
482 | } static B (*N(VEC(B) *)) |
483 | |
484 | DEFVECTOR_EXTEND(pv_extend, Param); |
485 | DEFVECTOR_EXTEND(piv_extend, ParamInit); |
486 | |
487 | #define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \ |
488 | while (p->used) { \ |
489 | p->used--; \ |
490 | F(aTHX_ &p->data[p->used]); \ |
491 | } \ |
492 | Safefree(p->data); \ |
493 | p->data = NULL; \ |
494 | p->size = 0; \ |
495 | } static void N(pTHX_ VEC(B) *) |
496 | |
497 | static void p_clear(pTHX_ Param *p) { |
498 | p->name = NULL; |
499 | p->padoff = NOT_IN_PAD; |
500 | } |
501 | |
502 | static void pi_clear(pTHX_ ParamInit *pi) { |
503 | p_clear(aTHX_ &pi->param); |
504 | if (pi->init) { |
505 | op_free(pi->init); |
506 | pi->init = NULL; |
507 | } |
508 | } |
509 | |
510 | DEFVECTOR_CLEAR(pv_clear, Param, p_clear); |
511 | DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear); |
512 | |
513 | static void ps_clear(pTHX_ ParamSpec *ps) { |
514 | p_clear(aTHX_ &ps->invocant); |
515 | |
516 | pv_clear(aTHX_ &ps->positional_required); |
517 | piv_clear(aTHX_ &ps->positional_optional); |
518 | |
519 | pv_clear(aTHX_ &ps->named_required); |
520 | piv_clear(aTHX_ &ps->named_optional); |
521 | |
522 | p_clear(aTHX_ &ps->slurpy); |
523 | } |
524 | |
525 | static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) { |
526 | size_t i, lim; |
527 | |
528 | if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) { |
529 | return 1; |
530 | } |
531 | |
532 | for (i = 0, lim = ps->positional_required.used; i < lim; i++) { |
533 | if (sv_eq(sv, ps->positional_required.data[i].name)) { |
534 | return 1; |
535 | } |
536 | } |
537 | |
538 | for (i = 0, lim = ps->positional_optional.used; i < lim; i++) { |
539 | if (sv_eq(sv, ps->positional_optional.data[i].param.name)) { |
540 | return 1; |
541 | } |
542 | } |
543 | |
544 | for (i = 0, lim = ps->named_required.used; i < lim; i++) { |
545 | if (sv_eq(sv, ps->named_required.data[i].name)) { |
546 | return 1; |
547 | } |
548 | } |
549 | |
550 | for (i = 0, lim = ps->named_optional.used; i < lim; i++) { |
551 | if (sv_eq(sv, ps->named_optional.data[i].param.name)) { |
552 | return 1; |
553 | } |
554 | } |
555 | |
556 | return 0; |
557 | } |
558 | |
559 | static void ps_free_void(pTHX_ void *p) { |
560 | ps_clear(aTHX_ p); |
561 | Safefree(p); |
562 | } |
563 | |
564 | static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) { |
565 | int n = 0; |
566 | if (!ps) { |
567 | return SvTRUE(ks->shift) ? 1 : 0; |
568 | } |
569 | if (ps->invocant.name) { |
570 | n++; |
571 | } |
572 | n += ps->positional_required.used; |
573 | n += ps->named_required.used * 2; |
574 | return n; |
575 | } |
576 | |
577 | static int args_max(const ParamSpec *ps) { |
578 | int n = 0; |
579 | if (!ps) { |
580 | return -1; |
581 | } |
582 | if (ps->invocant.name) { |
583 | n++; |
584 | } |
585 | n += ps->positional_required.used; |
586 | n += ps->positional_optional.used; |
587 | if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) { |
588 | n = -1; |
589 | } |
590 | return n; |
591 | } |
592 | |
593 | static size_t count_positional_params(const ParamSpec *ps) { |
594 | return ps->positional_required.used + ps->positional_optional.used; |
595 | } |
596 | |
597 | static size_t count_named_params(const ParamSpec *ps) { |
598 | return ps->named_required.used + ps->named_optional.used; |
599 | } |
600 | |
601 | enum { |
602 | PARAM_INVOCANT = 0x01, |
603 | PARAM_NAMED = 0x02 |
604 | }; |
605 | |
606 | /* *pinit must be NULL on entry. |
607 | * caller must free *pinit on error. |
608 | */ |
609 | static PADOFFSET parse_param( |
610 | pTHX_ |
611 | const SV *declarator, const KWSpec *spec, ParamSpec *param_spec, |
612 | int *pflags, SV **pname, OP **pinit |
613 | ) { |
614 | I32 c; |
615 | char sigil; |
616 | SV *name; |
617 | |
618 | assert(!*pinit); |
619 | *pflags = 0; |
620 | |
621 | c = lex_peek_unichar(0); |
622 | |
623 | if (c == ':') { |
624 | lex_read_unichar(0); |
625 | lex_read_space(0); |
626 | |
627 | *pflags |= PARAM_NAMED; |
628 | |
629 | c = lex_peek_unichar(0); |
630 | } |
631 | |
632 | if (c == -1) { |
633 | croak("In %"SVf": unterminated parameter list", SVfARG(declarator)); |
634 | } |
635 | if (!(c == '$' || c == '@' || c == '%')) { |
636 | croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c); |
637 | } |
638 | |
639 | sigil = c; |
640 | |
641 | lex_read_unichar(0); |
642 | lex_read_space(0); |
643 | |
644 | if (!(name = my_scan_word(aTHX_ FALSE))) { |
645 | croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil); |
646 | } |
647 | sv_insert(name, 0, 0, &sigil, 1); |
648 | *pname = name; |
649 | |
650 | lex_read_space(0); |
651 | c = lex_peek_unichar(0); |
652 | |
653 | if (c == '=') { |
654 | lex_read_unichar(0); |
655 | lex_read_space(0); |
656 | |
657 | |
658 | if (!param_spec->invocant.name && SvTRUE(spec->shift)) { |
659 | param_spec->invocant.name = spec->shift; |
660 | param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL); |
661 | } |
662 | |
663 | *pinit = parse_termexpr(0); |
664 | |
665 | lex_read_space(0); |
666 | c = lex_peek_unichar(0); |
667 | } |
668 | |
669 | if (c == ':') { |
670 | *pflags |= PARAM_INVOCANT; |
671 | lex_read_unichar(0); |
672 | lex_read_space(0); |
673 | } else if (c == ',') { |
674 | lex_read_unichar(0); |
675 | lex_read_space(0); |
676 | } else if (c != ')') { |
677 | if (c == -1) { |
678 | croak("In %"SVf": unterminated parameter list", SVfARG(declarator)); |
679 | } |
680 | croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c); |
681 | } |
682 | |
683 | return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL); |
684 | } |
685 | |
686 | static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) { |
687 | OP *var = newOP(type, flags); |
688 | var->op_targ = padoff; |
689 | return var; |
690 | } |
691 | |
692 | static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) { |
693 | return my_var_g(aTHX_ OP_PADSV, flags, padoff); |
694 | } |
695 | |
fc634bba |
696 | static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) { |
697 | OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h); |
698 | return newBINOP(OP_HELEM, 0, hv, k); |
699 | } |
700 | |
701 | static OP *mkconstsv(pTHX_ SV *sv) { |
702 | return newSVOP(OP_CONST, 0, sv); |
703 | } |
704 | |
705 | static OP *mkconstiv(pTHX_ IV i) { |
706 | return mkconstsv(aTHX_ newSViv(i)); |
707 | } |
708 | |
709 | static OP *mkconstpv(pTHX_ const char *p, size_t n) { |
710 | return mkconstsv(aTHX_ newSVpv(p, n)); |
711 | } |
712 | |
713 | #define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1) |
714 | |
63915d26 |
715 | static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) { |
e158cf8f |
716 | ParamSpec *param_spec; |
c311cef3 |
717 | SV *declarator; |
718 | I32 floor_ix; |
63915d26 |
719 | int save_ix; |
c311cef3 |
720 | SV *saw_name; |
1e0f1595 |
721 | OP **prelude_sentinel; |
c311cef3 |
722 | SV *proto; |
723 | OP **attrs_sentinel, *body; |
724 | unsigned builtin_attrs; |
db81d362 |
725 | I32 c; |
726 | |
db81d362 |
727 | declarator = sv_2mortal(newSVpvn(keyword_ptr, keyword_len)); |
db81d362 |
728 | |
db81d362 |
729 | lex_read_space(0); |
730 | |
c311cef3 |
731 | builtin_attrs = 0; |
732 | |
db81d362 |
733 | /* function name */ |
c311cef3 |
734 | saw_name = NULL; |
31534187 |
735 | if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ TRUE))) { |
c311cef3 |
736 | |
737 | if (PL_parser->expect != XSTATE) { |
738 | /* bail out early so we don't predeclare $saw_name */ |
739 | croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name)); |
740 | } |
741 | |
db81d362 |
742 | sv_catpvs(declarator, " "); |
c311cef3 |
743 | sv_catsv(declarator, saw_name); |
744 | |
745 | if ( |
746 | sv_eq_pvs(saw_name, "BEGIN") || |
747 | sv_eq_pvs(saw_name, "END") || |
748 | sv_eq_pvs(saw_name, "INIT") || |
749 | sv_eq_pvs(saw_name, "CHECK") || |
750 | sv_eq_pvs(saw_name, "UNITCHECK") |
751 | ) { |
752 | builtin_attrs |= MY_ATTR_SPECIAL; |
753 | } |
754 | |
db81d362 |
755 | lex_read_space(0); |
63915d26 |
756 | } else if (!(spec->flags & FLAG_ANON_OK)) { |
31534187 |
757 | croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr); |
db81d362 |
758 | } else { |
759 | sv_catpvs(declarator, " (anon)"); |
760 | } |
761 | |
63915d26 |
762 | /* we're a subroutine declaration */ |
c311cef3 |
763 | floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON); |
764 | SAVEFREESV(PL_compcv); |
765 | |
63915d26 |
766 | /* create outer block: '{' */ |
767 | save_ix = S_block_start(aTHX_ TRUE); |
768 | |
1e0f1595 |
769 | /* initialize synthetic optree */ |
770 | Newx(prelude_sentinel, 1, OP *); |
771 | *prelude_sentinel = NULL; |
772 | SAVEDESTRUCTOR_X(free_ptr_op, prelude_sentinel); |
773 | |
db81d362 |
774 | /* parameters */ |
e158cf8f |
775 | param_spec = NULL; |
63915d26 |
776 | |
db81d362 |
777 | c = lex_peek_unichar(0); |
778 | if (c == '(') { |
e158cf8f |
779 | OP **init_sentinel; |
780 | |
781 | Newx(init_sentinel, 1, OP *); |
782 | *init_sentinel = NULL; |
783 | SAVEDESTRUCTOR_X(free_ptr_op, init_sentinel); |
784 | |
785 | Newx(param_spec, 1, ParamSpec); |
786 | ps_init(param_spec); |
787 | SAVEDESTRUCTOR_X(ps_free_void, param_spec); |
db81d362 |
788 | |
789 | lex_read_unichar(0); |
790 | lex_read_space(0); |
791 | |
e158cf8f |
792 | while ((c = lex_peek_unichar(0)) != ')') { |
793 | int flags; |
794 | SV *name; |
795 | char sigil; |
796 | PADOFFSET padoff; |
c311cef3 |
797 | |
e158cf8f |
798 | padoff = parse_param(aTHX_ declarator, spec, param_spec, &flags, &name, init_sentinel); |
c311cef3 |
799 | |
e158cf8f |
800 | S_intro_my(aTHX); |
63915d26 |
801 | |
e158cf8f |
802 | sigil = SvPV_nolen(name)[0]; |
db81d362 |
803 | |
e158cf8f |
804 | /* internal consistency */ |
805 | if (flags & PARAM_NAMED) { |
806 | if (flags & PARAM_INVOCANT) { |
807 | croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name)); |
db81d362 |
808 | } |
e158cf8f |
809 | if (sigil != '$') { |
810 | croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash"); |
db81d362 |
811 | } |
e158cf8f |
812 | } else if (flags & PARAM_INVOCANT) { |
813 | if (*init_sentinel) { |
814 | croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name)); |
db81d362 |
815 | } |
e158cf8f |
816 | if (sigil != '$') { |
817 | croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash"); |
818 | } |
819 | } else if (sigil != '$' && *init_sentinel) { |
820 | croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name)); |
821 | } |
db81d362 |
822 | |
e158cf8f |
823 | /* external constraints */ |
824 | if (param_spec->slurpy.name) { |
825 | croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name)); |
826 | } |
827 | if (sigil != '$') { |
828 | assert(!*init_sentinel); |
829 | param_spec->slurpy.name = name; |
830 | param_spec->slurpy.padoff = padoff; |
831 | continue; |
832 | } |
d8e5d540 |
833 | |
e158cf8f |
834 | if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) { |
835 | 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)); |
836 | } |
d8e5d540 |
837 | |
e158cf8f |
838 | if (flags & PARAM_INVOCANT) { |
839 | if (param_spec->invocant.name) { |
840 | croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name)); |
841 | } |
842 | if (count_positional_params(param_spec) || count_named_params(param_spec)) { |
843 | croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name)); |
63915d26 |
844 | } |
e158cf8f |
845 | if (!(spec->flags & FLAG_INVOCANT)) { |
846 | croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name)); |
847 | } |
848 | param_spec->invocant.name = name; |
849 | param_spec->invocant.padoff = padoff; |
850 | continue; |
851 | } |
63915d26 |
852 | |
e158cf8f |
853 | if (*init_sentinel && !(spec->flags & FLAG_DEFAULT_ARGS)) { |
854 | croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name)); |
855 | } |
1e0f1595 |
856 | |
e158cf8f |
857 | if (ps_contains(aTHX_ param_spec, name)) { |
858 | croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name)); |
859 | } |
1e0f1595 |
860 | |
e158cf8f |
861 | if (flags & PARAM_NAMED) { |
862 | if (!(spec->flags & FLAG_NAMED_PARAMS)) { |
863 | croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name)); |
1e0f1595 |
864 | } |
865 | |
e158cf8f |
866 | if (*init_sentinel) { |
867 | ParamInit *pi = piv_extend(¶m_spec->named_optional); |
868 | pi->param.name = name; |
869 | pi->param.padoff = padoff; |
870 | pi->init = *init_sentinel; |
871 | *init_sentinel = NULL; |
872 | param_spec->named_optional.used++; |
873 | } else { |
874 | if (param_spec->positional_optional.used) { |
875 | 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)); |
876 | } |
d8e5d540 |
877 | |
e158cf8f |
878 | Param *p = pv_extend(¶m_spec->named_required); |
879 | p->name = name; |
880 | p->padoff = padoff; |
881 | param_spec->named_required.used++; |
882 | } |
883 | } else { |
884 | if (*init_sentinel || param_spec->positional_optional.used) { |
885 | ParamInit *pi = piv_extend(¶m_spec->positional_optional); |
886 | pi->param.name = name; |
887 | pi->param.padoff = padoff; |
888 | pi->init = *init_sentinel; |
889 | *init_sentinel = NULL; |
890 | param_spec->positional_optional.used++; |
891 | } else { |
892 | Param *p = pv_extend(¶m_spec->positional_required); |
893 | p->name = name; |
894 | p->padoff = padoff; |
895 | param_spec->positional_required.used++; |
db81d362 |
896 | } |
897 | } |
898 | |
e158cf8f |
899 | } |
900 | lex_read_unichar(0); |
901 | lex_read_space(0); |
902 | *init_sentinel = NULL; |
db81d362 |
903 | |
e158cf8f |
904 | if (!param_spec->invocant.name && SvTRUE(spec->shift)) { |
905 | if (ps_contains(aTHX_ param_spec, spec->shift)) { |
906 | croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift)); |
db81d362 |
907 | } |
e158cf8f |
908 | |
909 | param_spec->invocant.name = spec->shift; |
910 | param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL); |
db81d362 |
911 | } |
912 | } |
913 | |
914 | /* prototype */ |
c311cef3 |
915 | proto = NULL; |
db81d362 |
916 | c = lex_peek_unichar(0); |
917 | if (c == ':') { |
918 | lex_read_unichar(0); |
919 | lex_read_space(0); |
920 | |
921 | c = lex_peek_unichar(0); |
922 | if (c != '(') { |
c311cef3 |
923 | lex_stuff_pvs(":", 0); |
924 | c = ':'; |
db81d362 |
925 | } else { |
31534187 |
926 | lex_read_unichar(0); |
927 | if (!(proto = my_scan_parens_tail(aTHX_ FALSE))) { |
f34187b8 |
928 | croak("In %"SVf": prototype not terminated", SVfARG(declarator)); |
db81d362 |
929 | } |
31534187 |
930 | my_check_prototype(aTHX_ declarator, proto); |
db81d362 |
931 | lex_read_space(0); |
c311cef3 |
932 | c = lex_peek_unichar(0); |
514bcaa6 |
933 | if (!(c == ':' || c == '{')) { |
934 | lex_stuff_pvs(":", 0); |
935 | c = ':'; |
936 | } |
db81d362 |
937 | } |
938 | } |
939 | |
db81d362 |
940 | /* attributes */ |
c311cef3 |
941 | Newx(attrs_sentinel, 1, OP *); |
942 | *attrs_sentinel = NULL; |
311ced6f |
943 | SAVEDESTRUCTOR_X(free_ptr_op, attrs_sentinel); |
c311cef3 |
944 | |
63915d26 |
945 | if (c == ':' || c == '{') /* '}' - hi, vim */ { |
c311cef3 |
946 | |
947 | /* kludge default attributes in */ |
948 | if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') { |
949 | lex_stuff_sv(spec->attrs, 0); |
950 | c = ':'; |
951 | } |
b72eb6ee |
952 | |
db81d362 |
953 | if (c == ':') { |
db81d362 |
954 | lex_read_unichar(0); |
955 | lex_read_space(0); |
db81d362 |
956 | c = lex_peek_unichar(0); |
c311cef3 |
957 | |
958 | for (;;) { |
959 | SV *attr; |
960 | |
31534187 |
961 | if (!(attr = my_scan_word(aTHX_ FALSE))) { |
c311cef3 |
962 | break; |
db81d362 |
963 | } |
c311cef3 |
964 | |
db81d362 |
965 | lex_read_space(0); |
966 | c = lex_peek_unichar(0); |
c311cef3 |
967 | |
968 | if (c != '(') { |
969 | if (sv_eq_pvs(attr, "lvalue")) { |
970 | builtin_attrs |= MY_ATTR_LVALUE; |
971 | attr = NULL; |
972 | } else if (sv_eq_pvs(attr, "method")) { |
973 | builtin_attrs |= MY_ATTR_METHOD; |
974 | attr = NULL; |
975 | } |
976 | } else { |
31534187 |
977 | SV *sv; |
978 | lex_read_unichar(0); |
979 | if (!(sv = my_scan_parens_tail(aTHX_ TRUE))) { |
c311cef3 |
980 | croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator)); |
981 | } |
31534187 |
982 | sv_catpvs(attr, "("); |
c311cef3 |
983 | sv_catsv(attr, sv); |
31534187 |
984 | sv_catpvs(attr, ")"); |
c311cef3 |
985 | |
986 | lex_read_space(0); |
987 | c = lex_peek_unichar(0); |
988 | } |
989 | |
990 | if (attr) { |
fc634bba |
991 | *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(attr))); |
c311cef3 |
992 | } |
993 | |
994 | if (c == ':') { |
995 | lex_read_unichar(0); |
996 | lex_read_space(0); |
997 | c = lex_peek_unichar(0); |
998 | } |
db81d362 |
999 | } |
1000 | } |
1001 | } |
1002 | |
1003 | /* body */ |
63915d26 |
1004 | if (c != '{') /* '}' - hi, vim */ { |
85bc3fbd |
1005 | croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c); |
db81d362 |
1006 | } |
c311cef3 |
1007 | |
63915d26 |
1008 | /* surprise predeclaration! */ |
1009 | if (saw_name) { |
1010 | /* 'sub NAME (PROTO);' to make name/proto known to perl before it |
1011 | starts parsing the body */ |
1012 | const I32 sub_ix = start_subparse(FALSE, 0); |
1013 | SAVEFREESV(PL_compcv); |
1014 | |
1015 | SvREFCNT_inc_simple_void(PL_compcv); |
1016 | |
1017 | newATTRSUB( |
1018 | sub_ix, |
fc634bba |
1019 | mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)), |
1020 | proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL, |
63915d26 |
1021 | NULL, |
1022 | NULL |
1023 | ); |
1024 | } |
1025 | |
c311cef3 |
1026 | if (builtin_attrs & MY_ATTR_LVALUE) { |
1027 | CvLVALUE_on(PL_compcv); |
db81d362 |
1028 | } |
c311cef3 |
1029 | if (builtin_attrs & MY_ATTR_METHOD) { |
1030 | CvMETHOD_on(PL_compcv); |
1031 | } |
1032 | if (builtin_attrs & MY_ATTR_SPECIAL) { |
1033 | CvSPECIAL_on(PL_compcv); |
db81d362 |
1034 | } |
1035 | |
e158cf8f |
1036 | /* check number of arguments */ |
1e0f1595 |
1037 | if (spec->flags & FLAG_CHECK_NARGS) { |
e158cf8f |
1038 | int amin, amax; |
1039 | size_t named; |
abccbe86 |
1040 | |
e158cf8f |
1041 | amin = args_min(aTHX_ param_spec, spec); |
1042 | if (amin > 0) { |
1e0f1595 |
1043 | OP *chk, *cond, *err, *croak; |
63915d26 |
1044 | |
fc634bba |
1045 | err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin)); |
1046 | err = newBINOP( |
1047 | OP_CONCAT, 0, |
1048 | err, |
1049 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)) |
1050 | ); |
1051 | err = newBINOP( |
1052 | OP_CONCAT, 0, |
1053 | err, |
1054 | mkconstpvs(")") |
1055 | ); |
63915d26 |
1056 | |
1e0f1595 |
1057 | croak = newCVREF(OPf_WANT_SCALAR, |
5f50e017 |
1058 | newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))); |
1e0f1595 |
1059 | err = newUNOP(OP_ENTERSUB, OPf_STACKED, |
5f50e017 |
1060 | op_append_elem(OP_LIST, err, croak)); |
63915d26 |
1061 | |
1e0f1595 |
1062 | cond = newBINOP(OP_LT, 0, |
5f50e017 |
1063 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
fc634bba |
1064 | mkconstiv(aTHX_ amin)); |
1e0f1595 |
1065 | chk = newLOGOP(OP_AND, 0, cond, err); |
63915d26 |
1066 | |
1e0f1595 |
1067 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk)); |
1068 | } |
abccbe86 |
1069 | |
e158cf8f |
1070 | amax = args_max(param_spec); |
1071 | if (amax >= 0) { |
1e0f1595 |
1072 | OP *chk, *cond, *err, *croak; |
63915d26 |
1073 | |
fc634bba |
1074 | err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax)); |
1075 | err = newBINOP( |
1076 | OP_CONCAT, 0, |
1077 | err, |
1078 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)) |
1079 | ); |
1080 | err = newBINOP( |
1081 | OP_CONCAT, 0, |
1082 | err, |
1083 | mkconstpvs(")") |
1084 | ); |
63915d26 |
1085 | |
fc634bba |
1086 | croak = newCVREF( |
1087 | OPf_WANT_SCALAR, |
1088 | newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)) |
1089 | ); |
1e0f1595 |
1090 | err = newUNOP(OP_ENTERSUB, OPf_STACKED, |
fc634bba |
1091 | op_append_elem(OP_LIST, err, croak)); |
63915d26 |
1092 | |
fc634bba |
1093 | cond = newBINOP( |
1094 | OP_GT, 0, |
1095 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
1096 | mkconstiv(aTHX_ amax) |
1097 | ); |
1e0f1595 |
1098 | chk = newLOGOP(OP_AND, 0, cond, err); |
63915d26 |
1099 | |
1e0f1595 |
1100 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk)); |
1101 | } |
e158cf8f |
1102 | |
1103 | if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) { |
1e0f1595 |
1104 | OP *chk, *cond, *err, *croak; |
e158cf8f |
1105 | const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name; |
63915d26 |
1106 | |
fc634bba |
1107 | err = mkconstsv(aTHX_ newSVpvf("Odd number of paired arguments for %"SVf"", SVfARG(declarator))); |
63915d26 |
1108 | |
fc634bba |
1109 | croak = newCVREF( |
1110 | OPf_WANT_SCALAR, |
1111 | newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)) |
1112 | ); |
1e0f1595 |
1113 | err = newUNOP(OP_ENTERSUB, OPf_STACKED, |
fc634bba |
1114 | op_append_elem(OP_LIST, err, croak)); |
63915d26 |
1115 | |
1e0f1595 |
1116 | cond = newBINOP(OP_GT, 0, |
5f50e017 |
1117 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
fc634bba |
1118 | mkconstiv(aTHX_ fixed)); |
e158cf8f |
1119 | cond = newLOGOP(OP_AND, 0, |
fc634bba |
1120 | cond, |
1121 | newBINOP(OP_MODULO, 0, |
1122 | fixed |
1123 | ? newBINOP(OP_SUBTRACT, 0, |
1124 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
1125 | mkconstiv(aTHX_ fixed)) |
1126 | : newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
1127 | mkconstiv(aTHX_ 2))); |
1e0f1595 |
1128 | chk = newLOGOP(OP_AND, 0, cond, err); |
63915d26 |
1129 | |
1e0f1595 |
1130 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk)); |
c311cef3 |
1131 | } |
1e0f1595 |
1132 | } |
c311cef3 |
1133 | |
e158cf8f |
1134 | if (!param_spec) { |
1135 | /* my $invocant = shift; */ |
1136 | if (SvTRUE(spec->shift)) { |
1137 | OP *var; |
abccbe86 |
1138 | |
e158cf8f |
1139 | var = my_var( |
1140 | aTHX_ |
1141 | OPf_MOD | (OPpLVAL_INTRO << 8), |
1142 | pad_add_name_sv(spec->shift, 0, NULL, NULL) |
1143 | ); |
1144 | var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0)); |
c311cef3 |
1145 | |
e158cf8f |
1146 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var)); |
1147 | } |
1148 | } else { |
1149 | /* my $invocant = shift; */ |
1150 | if (param_spec->invocant.name) { |
1151 | OP *var; |
c311cef3 |
1152 | |
e158cf8f |
1153 | var = my_var( |
1154 | aTHX_ |
1155 | OPf_MOD | (OPpLVAL_INTRO << 8), |
1156 | param_spec->invocant.padoff |
1157 | ); |
1158 | var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0)); |
1e0f1595 |
1159 | |
e158cf8f |
1160 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var)); |
c311cef3 |
1161 | } |
1162 | |
e158cf8f |
1163 | /* my (...) = @_; */ |
1164 | { |
1165 | OP *lhs; |
1166 | size_t i, lim; |
63915d26 |
1167 | |
e158cf8f |
1168 | lhs = NULL; |
63915d26 |
1169 | |
e158cf8f |
1170 | for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) { |
1171 | OP *const var = my_var( |
1172 | aTHX_ |
1173 | OPf_WANT_LIST | (OPpLVAL_INTRO << 8), |
1174 | param_spec->positional_required.data[i].padoff |
1175 | ); |
1176 | lhs = op_append_elem(OP_LIST, lhs, var); |
1177 | } |
63915d26 |
1178 | |
e158cf8f |
1179 | for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) { |
1180 | OP *const var = my_var( |
1181 | aTHX_ |
1182 | OPf_WANT_LIST | (OPpLVAL_INTRO << 8), |
1183 | param_spec->positional_optional.data[i].param.padoff |
1184 | ); |
1185 | lhs = op_append_elem(OP_LIST, lhs, var); |
1186 | } |
63915d26 |
1187 | |
fc634bba |
1188 | { |
1189 | PADOFFSET padoff; |
1190 | I32 type; |
1191 | bool slurpy_hash; |
1192 | |
1193 | /* |
1194 | * cases: |
1195 | * 1) no named params |
1196 | * 1.1) slurpy |
1197 | * => put it in |
1198 | * 1.2) no slurpy |
1199 | * => nop |
1200 | * 2) named params |
1201 | * 2.1) no slurpy |
1202 | * => synthetic %{rest} |
1203 | * 2.2) slurpy is a hash |
1204 | * => put it in |
1205 | * 2.3) slurpy is an array |
1206 | * => synthetic %{rest} |
1207 | * remember to declare array later |
1208 | */ |
1209 | |
1210 | slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'; |
1211 | if (!count_named_params(param_spec)) { |
1212 | if (param_spec->slurpy.name) { |
1213 | padoff = param_spec->slurpy.padoff; |
1214 | type = slurpy_hash ? OP_PADHV : OP_PADAV; |
1215 | } else { |
1216 | padoff = NOT_IN_PAD; |
1217 | type = OP_PADSV; |
1218 | } |
1219 | } else if (slurpy_hash) { |
1220 | padoff = param_spec->slurpy.padoff; |
1221 | type = OP_PADHV; |
e158cf8f |
1222 | } else { |
fc634bba |
1223 | padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL); |
1224 | type = OP_PADHV; |
1225 | } |
1226 | |
1227 | if (padoff != NOT_IN_PAD) { |
e158cf8f |
1228 | OP *const var = my_var_g( |
1229 | aTHX_ |
fc634bba |
1230 | type, |
e158cf8f |
1231 | OPf_WANT_LIST | (OPpLVAL_INTRO << 8), |
fc634bba |
1232 | padoff |
e158cf8f |
1233 | ); |
fc634bba |
1234 | |
e158cf8f |
1235 | lhs = op_append_elem(OP_LIST, lhs, var); |
fc634bba |
1236 | |
1237 | if (type == OP_PADHV) { |
1238 | param_spec->rest_hash = padoff; |
1239 | } |
e158cf8f |
1240 | } |
1241 | } |
63915d26 |
1242 | |
e158cf8f |
1243 | if (lhs) { |
1244 | OP *rhs; |
1245 | lhs->op_flags |= OPf_PARENS; |
1246 | rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv)); |
1247 | |
1248 | *prelude_sentinel = op_append_list( |
1249 | OP_LINESEQ, *prelude_sentinel, |
1250 | newSTATEOP( |
1251 | 0, NULL, |
1252 | newASSIGNOP(OPf_STACKED, lhs, 0, rhs) |
1253 | ) |
1254 | ); |
1255 | } |
1256 | } |
63915d26 |
1257 | |
fc634bba |
1258 | /* default positional arguments */ |
e158cf8f |
1259 | { |
1260 | size_t i, lim, req; |
1261 | OP *nest; |
63915d26 |
1262 | |
e158cf8f |
1263 | nest = NULL; |
63915d26 |
1264 | |
e158cf8f |
1265 | req = param_spec->positional_required.used; |
1266 | for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) { |
1267 | ParamInit *cur = ¶m_spec->positional_optional.data[i]; |
1268 | OP *var, *cond; |
63915d26 |
1269 | |
e158cf8f |
1270 | cond = newBINOP( |
1271 | OP_LT, 0, |
1272 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), |
fc634bba |
1273 | mkconstiv(aTHX_ req + i + 1) |
e158cf8f |
1274 | ); |
63915d26 |
1275 | |
e158cf8f |
1276 | var = my_var(aTHX_ 0, cur->param.padoff); |
63915d26 |
1277 | |
e158cf8f |
1278 | nest = op_append_list( |
1279 | OP_LINESEQ, nest, |
1280 | newASSIGNOP(OPf_STACKED, var, 0, cur->init) |
1281 | ); |
1282 | cur->init = NULL; |
1283 | nest = newCONDOP( |
1284 | 0, |
1285 | cond, |
1286 | nest, |
1287 | NULL |
1288 | ); |
1289 | } |
1e0f1595 |
1290 | |
e158cf8f |
1291 | *prelude_sentinel = op_append_list( |
1292 | OP_LINESEQ, *prelude_sentinel, |
1293 | nest |
1294 | ); |
c311cef3 |
1295 | } |
1296 | |
e158cf8f |
1297 | /* named parameters */ |
1298 | if (count_named_params(param_spec)) { |
fc634bba |
1299 | size_t i, lim; |
1300 | |
1301 | assert(param_spec->rest_hash != NOT_IN_PAD); |
1302 | |
1303 | for (i = 0, lim = param_spec->named_required.used; i < lim; i++) { |
1304 | Param *cur = ¶m_spec->named_required.data[i]; |
1305 | size_t n; |
1306 | char *p = SvPV(cur->name, n); |
1307 | OP *var, *cond; |
1308 | |
1309 | cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1)); |
1310 | |
1311 | if (spec->flags & FLAG_CHECK_NARGS) { |
1312 | OP *croak, *msg; |
1313 | |
1314 | var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1)); |
1315 | var = newUNOP(OP_DELETE, 0, var); |
1316 | |
1317 | msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1)); |
1318 | croak = newCVREF( |
1319 | OPf_WANT_SCALAR, |
1320 | newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)) |
1321 | ); |
1322 | croak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, croak)); |
1323 | |
1324 | cond = newUNOP(OP_EXISTS, 0, cond); |
1325 | |
1326 | cond = newCONDOP(0, cond, var, croak); |
1327 | } |
1328 | |
1329 | var = my_var( |
1330 | aTHX_ |
1331 | OPf_MOD | (OPpLVAL_INTRO << 8), |
1332 | cur->padoff |
1333 | ); |
1334 | var = newASSIGNOP(OPf_STACKED, var, 0, cond); |
1335 | |
1336 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var)); |
1337 | } |
1338 | |
1339 | for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) { |
1340 | ParamInit *cur = ¶m_spec->named_optional.data[i]; |
1341 | size_t n; |
1342 | char *p = SvPV(cur->param.name, n); |
1343 | OP *var, *cond; |
1344 | |
1345 | var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1)); |
1346 | var = newUNOP(OP_DELETE, 0, var); |
1347 | |
1348 | cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1)); |
1349 | cond = newUNOP(OP_EXISTS, 0, cond); |
1350 | |
1351 | cond = newCONDOP(0, cond, var, cur->init); |
1352 | cur->init = NULL; |
1353 | |
1354 | var = my_var( |
1355 | aTHX_ |
1356 | OPf_MOD | (OPpLVAL_INTRO << 8), |
1357 | cur->param.padoff |
1358 | ); |
1359 | var = newASSIGNOP(OPf_STACKED, var, 0, cond); |
1360 | |
1361 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var)); |
1362 | } |
1363 | |
1364 | if (!param_spec->slurpy.name) { |
1365 | if (spec->flags & FLAG_CHECK_NARGS) { |
1366 | /* croak if %{rest} */ |
1367 | OP *croak, *cond, *keys, *msg; |
1368 | |
1369 | keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash)); |
1370 | keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys); |
1371 | { |
1372 | OP *first, *mid, *last; |
1373 | |
1374 | last = keys; |
1375 | |
1376 | mid = mkconstpvs(", "); |
1377 | mid->op_sibling = last; |
1378 | |
1379 | first = newOP(OP_PUSHMARK, 0); |
1380 | |
1381 | keys = newLISTOP(OP_JOIN, 0, first, mid); |
1382 | keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP); |
1383 | ((LISTOP *)keys)->op_last = last; |
1384 | } |
1385 | |
1386 | msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator))); |
1387 | msg = newBINOP(OP_CONCAT, 0, msg, keys); |
1388 | |
1389 | croak = newCVREF( |
1390 | OPf_WANT_SCALAR, |
1391 | newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)) |
1392 | ); |
1393 | croak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, croak)); |
1394 | |
1395 | cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash)); |
1396 | croak = newCONDOP(0, cond, croak, NULL); |
1397 | |
1398 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, croak)); |
1399 | } else { |
1400 | OP *clear; |
1401 | |
1402 | clear = newASSIGNOP( |
1403 | OPf_STACKED, |
1404 | my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash), |
1405 | 0, |
1406 | newNULLLIST() |
1407 | ); |
1408 | |
1409 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear)); |
1410 | } |
1411 | } else if (param_spec->slurpy.padoff != param_spec->rest_hash) { |
1412 | OP *var, *clear; |
1413 | |
1414 | assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@'); |
1415 | |
1416 | var = my_var_g( |
1417 | aTHX_ |
1418 | OP_PADAV, |
1419 | OPf_MOD | (OPpLVAL_INTRO << 8), |
1420 | param_spec->slurpy.padoff |
1421 | ); |
1422 | |
1423 | var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash)); |
1424 | |
1425 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var)); |
1426 | |
1427 | clear = newASSIGNOP( |
1428 | OPf_STACKED, |
1429 | my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash), |
1430 | 0, |
1431 | newNULLLIST() |
1432 | ); |
1433 | |
1434 | *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear)); |
1435 | } |
1436 | } |
1e0f1595 |
1437 | } |
c311cef3 |
1438 | |
1e0f1595 |
1439 | /* finally let perl parse the actual subroutine body */ |
1440 | body = parse_block(0); |
c311cef3 |
1441 | |
1e0f1595 |
1442 | /* add '();' to make function return nothing by default */ |
1443 | /* (otherwise the invisible parameter initialization can "leak" into |
1444 | the return value: fun ($x) {}->("asdf", 0) == 2) */ |
1445 | if (*prelude_sentinel) { |
1446 | body = newSTATEOP(0, NULL, body); |
db81d362 |
1447 | } |
1448 | |
1e0f1595 |
1449 | body = op_append_list(OP_LINESEQ, *prelude_sentinel, body); |
1450 | *prelude_sentinel = NULL; |
1451 | |
c311cef3 |
1452 | /* it's go time. */ |
1453 | { |
1454 | OP *const attrs = *attrs_sentinel; |
1455 | *attrs_sentinel = NULL; |
1456 | SvREFCNT_inc_simple_void(PL_compcv); |
1457 | |
63915d26 |
1458 | /* close outer block: '}' */ |
1459 | S_block_end(aTHX_ save_ix, body); |
1460 | |
c311cef3 |
1461 | if (!saw_name) { |
1462 | *pop = newANONATTRSUB( |
1463 | floor_ix, |
1464 | proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL, |
1465 | attrs, |
1466 | body |
1467 | ); |
1468 | return KEYWORD_PLUGIN_EXPR; |
1469 | } |
1470 | |
1471 | newATTRSUB( |
1472 | floor_ix, |
1473 | newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)), |
1474 | proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL, |
1475 | attrs, |
1476 | body |
1477 | ); |
5efe0e0e |
1478 | *pop = newOP(OP_NULL, 0); |
c311cef3 |
1479 | return KEYWORD_PLUGIN_STMT; |
db81d362 |
1480 | } |
db81d362 |
1481 | } |
1482 | |
1483 | static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) { |
63915d26 |
1484 | KWSpec spec; |
db81d362 |
1485 | int ret; |
1486 | |
1487 | SAVETMPS; |
1488 | |
7dd35535 |
1489 | if (kw_flags(aTHX_ keyword_ptr, keyword_len, &spec)) { |
1490 | ret = parse_fun(aTHX_ op_ptr, keyword_ptr, keyword_len, &spec); |
db81d362 |
1491 | } else { |
7dd35535 |
1492 | ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr); |
db81d362 |
1493 | } |
1494 | |
1495 | FREETMPS; |
1496 | |
1497 | return ret; |
1498 | } |
1499 | |
1500 | WARNINGS_RESET |
1501 | |
1502 | MODULE = Function::Parameters PACKAGE = Function::Parameters |
1503 | PROTOTYPES: ENABLE |
1504 | |
1505 | BOOT: |
1506 | WARNINGS_ENABLE { |
1507 | HV *const stash = gv_stashpvs(MY_PKG, GV_ADD); |
426a4d69 |
1508 | /**/ |
d8e5d540 |
1509 | newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK)); |
1510 | newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK)); |
63915d26 |
1511 | newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS)); |
d8e5d540 |
1512 | newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS)); |
1513 | newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT)); |
e158cf8f |
1514 | newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS)); |
db81d362 |
1515 | newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS)); |
d8e5d540 |
1516 | newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_)); |
1517 | newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_)); |
1518 | newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_)); |
426a4d69 |
1519 | /**/ |
db81d362 |
1520 | next_keyword_plugin = PL_keyword_plugin; |
1521 | PL_keyword_plugin = my_keyword_plugin; |
1522 | } WARNINGS_RESET |