Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_ctl.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a0d0e21e LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Now far ahead the Road has gone, |
13 | * And I must follow, if I can, | |
14 | * Pursuing it with eager feet, | |
15 | * Until it joins some larger way | |
16 | * Where many paths and errands meet. | |
17 | * And whither then? I cannot say. | |
18 | * | |
19 | * [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] | |
a0d0e21e LW |
20 | */ |
21 | ||
166f8a29 DM |
22 | /* This file contains control-oriented pp ("push/pop") functions that |
23 | * execute the opcodes that make up a perl program. A typical pp function | |
24 | * expects to find its arguments on the stack, and usually pushes its | |
25 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
26 | * contains a pointer to the relevant pp_foo() function. | |
27 | * | |
28 | * Control-oriented means things like pp_enteriter() and pp_next(), which | |
29 | * alter the flow of control of the program. | |
30 | */ | |
31 | ||
32 | ||
a0d0e21e | 33 | #include "EXTERN.h" |
864dbfa3 | 34 | #define PERL_IN_PP_CTL_C |
a0d0e21e LW |
35 | #include "perl.h" |
36 | ||
54310121 | 37 | #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o)) |
1e422769 | 38 | |
94fcd414 NC |
39 | #define dopoptosub(plop) dopoptosub_at(cxstack, (plop)) |
40 | ||
a0d0e21e LW |
41 | PP(pp_wantarray) |
42 | { | |
39644a26 | 43 | dSP; |
a0d0e21e | 44 | I32 cxix; |
93f0bc49 | 45 | const PERL_CONTEXT *cx; |
a0d0e21e LW |
46 | EXTEND(SP, 1); |
47 | ||
93f0bc49 FC |
48 | if (PL_op->op_private & OPpOFFBYONE) { |
49 | if (!(cx = caller_cx(1,NULL))) RETPUSHUNDEF; | |
50 | } | |
51 | else { | |
52 | cxix = dopoptosub(cxstack_ix); | |
53 | if (cxix < 0) | |
a0d0e21e | 54 | RETPUSHUNDEF; |
93f0bc49 FC |
55 | cx = &cxstack[cxix]; |
56 | } | |
a0d0e21e | 57 | |
93f0bc49 | 58 | switch (cx->blk_gimme) { |
54310121 | 59 | case G_ARRAY: |
a0d0e21e | 60 | RETPUSHYES; |
54310121 | 61 | case G_SCALAR: |
a0d0e21e | 62 | RETPUSHNO; |
54310121 | 63 | default: |
64 | RETPUSHUNDEF; | |
65 | } | |
a0d0e21e LW |
66 | } |
67 | ||
2cd61cdb IZ |
68 | PP(pp_regcreset) |
69 | { | |
0b4182de | 70 | TAINT_NOT; |
2cd61cdb IZ |
71 | return NORMAL; |
72 | } | |
73 | ||
b3eb6a9b GS |
74 | PP(pp_regcomp) |
75 | { | |
39644a26 | 76 | dSP; |
eb578fdb | 77 | PMOP *pm = (PMOP*)cLOGOP->op_other; |
9f141731 | 78 | SV **args; |
df787a7b | 79 | int nargs; |
84679df5 | 80 | REGEXP *re = NULL; |
9f141731 DM |
81 | REGEXP *new_re; |
82 | const regexp_engine *eng; | |
dbc200c5 | 83 | bool is_bare_re= FALSE; |
bfed75c6 | 84 | |
df787a7b DM |
85 | if (PL_op->op_flags & OPf_STACKED) { |
86 | dMARK; | |
87 | nargs = SP - MARK; | |
88 | args = ++MARK; | |
89 | } | |
90 | else { | |
91 | nargs = 1; | |
92 | args = SP; | |
93 | } | |
94 | ||
4b5a0d1c | 95 | /* prevent recompiling under /o and ithreads. */ |
3db8f154 | 96 | #if defined(USE_ITHREADS) |
131b3ad0 | 97 | if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) { |
df787a7b | 98 | SP = args-1; |
131b3ad0 DM |
99 | RETURN; |
100 | } | |
513629ba | 101 | #endif |
d4b87e75 | 102 | |
9f141731 DM |
103 | re = PM_GETRE(pm); |
104 | assert (re != (REGEXP*) &PL_sv_undef); | |
105 | eng = re ? RX_ENGINE(re) : current_re_engine(); | |
106 | ||
dbc200c5 YO |
107 | /* |
108 | In the below logic: these are basically the same - check if this regcomp is part of a split. | |
109 | ||
110 | (PL_op->op_pmflags & PMf_split ) | |
111 | (PL_op->op_next->op_type == OP_PUSHRE) | |
112 | ||
113 | We could add a new mask for this and copy the PMf_split, if we did | |
114 | some bit definition fiddling first. | |
115 | ||
116 | For now we leave this | |
117 | */ | |
118 | ||
3c13cae6 DM |
119 | new_re = (eng->op_comp |
120 | ? eng->op_comp | |
121 | : &Perl_re_op_compile | |
122 | )(aTHX_ args, nargs, pm->op_code_list, eng, re, | |
346d3070 | 123 | &is_bare_re, |
dbc200c5 | 124 | (pm->op_pmflags & RXf_PMf_FLAGCOPYMASK), |
a5ae69f0 DM |
125 | pm->op_pmflags | |
126 | (PL_op->op_flags & OPf_SPECIAL ? PMf_USE_RE_EVAL : 0)); | |
dbc200c5 | 127 | |
346d3070 | 128 | if (pm->op_pmflags & PMf_HAS_CV) |
8d919b0a | 129 | ReANY(new_re)->qr_anoncv |
9fe3265f | 130 | = (CV*) SvREFCNT_inc(PAD_SV(PL_op->op_targ)); |
9f141731 DM |
131 | |
132 | if (is_bare_re) { | |
133 | REGEXP *tmp; | |
134 | /* The match's LHS's get-magic might need to access this op's regexp | |
135 | (e.g. $' =~ /$re/ while foo; see bug 70764). So we must call | |
136 | get-magic now before we replace the regexp. Hopefully this hack can | |
137 | be replaced with the approach described at | |
138 | http://www.nntp.perl.org/group/perl.perl5.porters/2007/03/msg122415.html | |
139 | some day. */ | |
140 | if (pm->op_type == OP_MATCH) { | |
141 | SV *lhs; | |
284167a5 | 142 | const bool was_tainted = TAINT_get; |
9f141731 DM |
143 | if (pm->op_flags & OPf_STACKED) |
144 | lhs = args[-1]; | |
6ffceeb7 | 145 | else if (pm->op_targ) |
9f141731 DM |
146 | lhs = PAD_SV(pm->op_targ); |
147 | else lhs = DEFSV; | |
148 | SvGETMAGIC(lhs); | |
149 | /* Restore the previous value of PL_tainted (which may have been | |
150 | modified by get-magic), to avoid incorrectly setting the | |
284167a5 S |
151 | RXf_TAINTED flag with RX_TAINT_on further down. */ |
152 | TAINT_set(was_tainted); | |
dc6d7f5c | 153 | #ifdef NO_TAINT_SUPPORT |
9a9b5ec9 DM |
154 | PERL_UNUSED_VAR(was_tainted); |
155 | #endif | |
df787a7b | 156 | } |
9f141731 DM |
157 | tmp = reg_temp_copy(NULL, new_re); |
158 | ReREFCNT_dec(new_re); | |
159 | new_re = tmp; | |
df787a7b | 160 | } |
dbc200c5 | 161 | |
9f141731 DM |
162 | if (re != new_re) { |
163 | ReREFCNT_dec(re); | |
164 | PM_SETRE(pm, new_re); | |
c277df42 | 165 | } |
d4b87e75 | 166 | |
dbc200c5 | 167 | |
284167a5 | 168 | if (TAINTING_get && TAINT_get) { |
9f141731 | 169 | SvTAINTED_on((SV*)new_re); |
284167a5 | 170 | RX_TAINT_on(new_re); |
72311751 | 171 | } |
72311751 | 172 | |
c737faaf YO |
173 | #if !defined(USE_ITHREADS) |
174 | /* can't change the optree at runtime either */ | |
175 | /* PMf_KEEP is handled differently under threads to avoid these problems */ | |
9f141731 DM |
176 | if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm) |
177 | pm = PL_curpm; | |
a0d0e21e | 178 | if (pm->op_pmflags & PMf_KEEP) { |
c90c0ff4 | 179 | pm->op_private &= ~OPpRUNTIME; /* no point compiling again */ |
533c011a | 180 | cLOGOP->op_first->op_next = PL_op->op_next; |
a0d0e21e | 181 | } |
c737faaf | 182 | #endif |
9f141731 | 183 | |
df787a7b | 184 | SP = args-1; |
a0d0e21e LW |
185 | RETURN; |
186 | } | |
187 | ||
9f141731 | 188 | |
a0d0e21e LW |
189 | PP(pp_substcont) |
190 | { | |
39644a26 | 191 | dSP; |
eb578fdb KW |
192 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
193 | PMOP * const pm = (PMOP*) cLOGOP->op_other; | |
194 | SV * const dstr = cx->sb_dstr; | |
195 | char *s = cx->sb_s; | |
196 | char *m = cx->sb_m; | |
a0d0e21e | 197 | char *orig = cx->sb_orig; |
eb578fdb | 198 | REGEXP * const rx = cx->sb_rx; |
c445ea15 | 199 | SV *nsv = NULL; |
988e6e7e | 200 | REGEXP *old = PM_GETRE(pm); |
f410a211 NC |
201 | |
202 | PERL_ASYNC_CHECK(); | |
203 | ||
988e6e7e | 204 | if(old != rx) { |
bfed75c6 | 205 | if(old) |
988e6e7e | 206 | ReREFCNT_dec(old); |
d6106309 | 207 | PM_SETRE(pm,ReREFCNT_inc(rx)); |
d8f2cf8a AB |
208 | } |
209 | ||
d9f97599 | 210 | rxres_restore(&cx->sb_rxres, rx); |
c90c0ff4 | 211 | |
a0d0e21e | 212 | if (cx->sb_iters++) { |
3c6ef0a5 | 213 | const SSize_t saviters = cx->sb_iters; |
a0d0e21e | 214 | if (cx->sb_iters > cx->sb_maxiters) |
cea2e8a9 | 215 | DIE(aTHX_ "Substitution loop"); |
a0d0e21e | 216 | |
447ee134 DM |
217 | SvGETMAGIC(TOPs); /* possibly clear taint on $1 etc: #67962 */ |
218 | ||
ef07e810 | 219 | /* See "how taint works" above pp_subst() */ |
20be6587 DM |
220 | if (SvTAINTED(TOPs)) |
221 | cx->sb_rxtainted |= SUBST_TAINT_REPL; | |
447ee134 | 222 | sv_catsv_nomg(dstr, POPs); |
2c296965 | 223 | if (CxONCE(cx) || s < orig || |
03c83e26 DM |
224 | !CALLREGEXEC(rx, s, cx->sb_strend, orig, |
225 | (s == m), cx->sb_targ, NULL, | |
d5e7783a | 226 | (REXEC_IGNOREPOS|REXEC_NOT_FIRST|REXEC_FAIL_ON_UNDERFLOW))) |
a0d0e21e | 227 | { |
8ca8a454 | 228 | SV *targ = cx->sb_targ; |
748a9306 | 229 | |
078c425b JH |
230 | assert(cx->sb_strend >= s); |
231 | if(cx->sb_strend > s) { | |
232 | if (DO_UTF8(dstr) && !SvUTF8(targ)) | |
4bac9ae4 | 233 | sv_catpvn_nomg_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv); |
078c425b | 234 | else |
4bac9ae4 | 235 | sv_catpvn_nomg(dstr, s, cx->sb_strend - s); |
078c425b | 236 | } |
20be6587 DM |
237 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
238 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
9212bbba | 239 | |
8ca8a454 NC |
240 | if (pm->op_pmflags & PMf_NONDESTRUCT) { |
241 | PUSHs(dstr); | |
242 | /* From here on down we're using the copy, and leaving the | |
243 | original untouched. */ | |
244 | targ = dstr; | |
245 | } | |
246 | else { | |
9e0ea7f3 FC |
247 | SV_CHECK_THINKFIRST_COW_DROP(targ); |
248 | if (isGV(targ)) Perl_croak_no_modify(); | |
249 | SvPV_free(targ); | |
8ca8a454 NC |
250 | SvPV_set(targ, SvPVX(dstr)); |
251 | SvCUR_set(targ, SvCUR(dstr)); | |
252 | SvLEN_set(targ, SvLEN(dstr)); | |
253 | if (DO_UTF8(dstr)) | |
254 | SvUTF8_on(targ); | |
255 | SvPV_set(dstr, NULL); | |
256 | ||
52c47e16 | 257 | PL_tainted = 0; |
4f4d7508 | 258 | mPUSHi(saviters - 1); |
48c036b1 | 259 | |
8ca8a454 NC |
260 | (void)SvPOK_only_UTF8(targ); |
261 | } | |
5cd24f17 | 262 | |
20be6587 | 263 | /* update the taint state of various various variables in |
ef07e810 DM |
264 | * preparation for final exit. |
265 | * See "how taint works" above pp_subst() */ | |
284167a5 | 266 | if (TAINTING_get) { |
20be6587 DM |
267 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || |
268 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
269 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
270 | ) | |
271 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
272 | ||
273 | if (!(cx->sb_rxtainted & SUBST_TAINT_BOOLRET) | |
274 | && (cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
275 | ) | |
276 | SvTAINTED_on(TOPs); /* taint return value */ | |
277 | /* needed for mg_set below */ | |
284167a5 S |
278 | TAINT_set( |
279 | cBOOL(cx->sb_rxtainted & | |
280 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)) | |
281 | ); | |
20be6587 DM |
282 | SvTAINT(TARG); |
283 | } | |
284 | /* PL_tainted must be correctly set for this mg_set */ | |
285 | SvSETMAGIC(TARG); | |
286 | TAINT_NOT; | |
4633a7c4 | 287 | LEAVE_SCOPE(cx->sb_oldsave); |
a0d0e21e | 288 | POPSUBST(cx); |
47c9d59f | 289 | PERL_ASYNC_CHECK(); |
a0d0e21e | 290 | RETURNOP(pm->op_next); |
e5964223 | 291 | NOT_REACHED; /* NOTREACHED */ |
a0d0e21e | 292 | } |
8e5e9ebe | 293 | cx->sb_iters = saviters; |
a0d0e21e | 294 | } |
07bc277f | 295 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
296 | m = s; |
297 | s = orig; | |
6502e081 | 298 | assert(!RX_SUBOFFSET(rx)); |
07bc277f | 299 | cx->sb_orig = orig = RX_SUBBEG(rx); |
a0d0e21e LW |
300 | s = orig + (m - s); |
301 | cx->sb_strend = s + (cx->sb_strend - m); | |
302 | } | |
07bc277f | 303 | cx->sb_m = m = RX_OFFS(rx)[0].start + orig; |
db79b45b | 304 | if (m > s) { |
bfed75c6 | 305 | if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ)) |
4bac9ae4 | 306 | sv_catpvn_nomg_utf8_upgrade(dstr, s, m - s, nsv); |
db79b45b | 307 | else |
4bac9ae4 | 308 | sv_catpvn_nomg(dstr, s, m-s); |
db79b45b | 309 | } |
07bc277f | 310 | cx->sb_s = RX_OFFS(rx)[0].end + orig; |
084916e3 | 311 | { /* Update the pos() information. */ |
8ca8a454 NC |
312 | SV * const sv |
313 | = (pm->op_pmflags & PMf_NONDESTRUCT) ? cx->sb_dstr : cx->sb_targ; | |
084916e3 | 314 | MAGIC *mg; |
a911bb25 DM |
315 | |
316 | /* the string being matched against may no longer be a string, | |
317 | * e.g. $_=0; s/.../$_++/ge */ | |
318 | ||
319 | if (!SvPOK(sv)) | |
320 | SvPV_force_nomg_nolen(sv); | |
321 | ||
96c2a8ff FC |
322 | if (!(mg = mg_find_mglob(sv))) { |
323 | mg = sv_magicext_mglob(sv); | |
084916e3 | 324 | } |
cda67c99 | 325 | MgBYTEPOS_set(mg, sv, SvPVX(sv), m - orig); |
084916e3 | 326 | } |
988e6e7e | 327 | if (old != rx) |
d6106309 | 328 | (void)ReREFCNT_inc(rx); |
20be6587 | 329 | /* update the taint state of various various variables in preparation |
ef07e810 DM |
330 | * for calling the code block. |
331 | * See "how taint works" above pp_subst() */ | |
284167a5 | 332 | if (TAINTING_get) { |
20be6587 DM |
333 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
334 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
335 | ||
336 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
337 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
338 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
339 | ) | |
340 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
341 | ||
342 | if (cx->sb_iters > 1 && (cx->sb_rxtainted & | |
343 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL))) | |
8ca8a454 NC |
344 | SvTAINTED_on((pm->op_pmflags & PMf_NONDESTRUCT) |
345 | ? cx->sb_dstr : cx->sb_targ); | |
20be6587 DM |
346 | TAINT_NOT; |
347 | } | |
d9f97599 | 348 | rxres_save(&cx->sb_rxres, rx); |
af9838cc | 349 | PL_curpm = pm; |
29f2e912 | 350 | RETURNOP(pm->op_pmstashstartu.op_pmreplstart); |
a0d0e21e LW |
351 | } |
352 | ||
c90c0ff4 | 353 | void |
864dbfa3 | 354 | Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx) |
c90c0ff4 | 355 | { |
356 | UV *p = (UV*)*rsp; | |
357 | U32 i; | |
7918f24d NC |
358 | |
359 | PERL_ARGS_ASSERT_RXRES_SAVE; | |
96a5add6 | 360 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 361 | |
07bc277f | 362 | if (!p || p[1] < RX_NPARENS(rx)) { |
db2c6cb3 | 363 | #ifdef PERL_ANY_COW |
6502e081 | 364 | i = 7 + (RX_NPARENS(rx)+1) * 2; |
ed252734 | 365 | #else |
6502e081 | 366 | i = 6 + (RX_NPARENS(rx)+1) * 2; |
ed252734 | 367 | #endif |
c90c0ff4 | 368 | if (!p) |
a02a5408 | 369 | Newx(p, i, UV); |
c90c0ff4 | 370 | else |
371 | Renew(p, i, UV); | |
372 | *rsp = (void*)p; | |
373 | } | |
374 | ||
5eabab15 DM |
375 | /* what (if anything) to free on croak */ |
376 | *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL); | |
cf93c79d | 377 | RX_MATCH_COPIED_off(rx); |
6c31ff74 | 378 | *p++ = RX_NPARENS(rx); |
c90c0ff4 | 379 | |
db2c6cb3 | 380 | #ifdef PERL_ANY_COW |
bdd9a1b1 NC |
381 | *p++ = PTR2UV(RX_SAVED_COPY(rx)); |
382 | RX_SAVED_COPY(rx) = NULL; | |
ed252734 NC |
383 | #endif |
384 | ||
07bc277f NC |
385 | *p++ = PTR2UV(RX_SUBBEG(rx)); |
386 | *p++ = (UV)RX_SUBLEN(rx); | |
6502e081 DM |
387 | *p++ = (UV)RX_SUBOFFSET(rx); |
388 | *p++ = (UV)RX_SUBCOFFSET(rx); | |
07bc277f NC |
389 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
390 | *p++ = (UV)RX_OFFS(rx)[i].start; | |
391 | *p++ = (UV)RX_OFFS(rx)[i].end; | |
c90c0ff4 | 392 | } |
393 | } | |
394 | ||
9c105995 NC |
395 | static void |
396 | S_rxres_restore(pTHX_ void **rsp, REGEXP *rx) | |
c90c0ff4 | 397 | { |
398 | UV *p = (UV*)*rsp; | |
399 | U32 i; | |
7918f24d NC |
400 | |
401 | PERL_ARGS_ASSERT_RXRES_RESTORE; | |
96a5add6 | 402 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 403 | |
ed252734 | 404 | RX_MATCH_COPY_FREE(rx); |
cf93c79d | 405 | RX_MATCH_COPIED_set(rx, *p); |
c90c0ff4 | 406 | *p++ = 0; |
6c31ff74 | 407 | RX_NPARENS(rx) = *p++; |
c90c0ff4 | 408 | |
db2c6cb3 | 409 | #ifdef PERL_ANY_COW |
bdd9a1b1 NC |
410 | if (RX_SAVED_COPY(rx)) |
411 | SvREFCNT_dec (RX_SAVED_COPY(rx)); | |
412 | RX_SAVED_COPY(rx) = INT2PTR(SV*,*p); | |
ed252734 NC |
413 | *p++ = 0; |
414 | #endif | |
415 | ||
07bc277f NC |
416 | RX_SUBBEG(rx) = INT2PTR(char*,*p++); |
417 | RX_SUBLEN(rx) = (I32)(*p++); | |
6502e081 DM |
418 | RX_SUBOFFSET(rx) = (I32)*p++; |
419 | RX_SUBCOFFSET(rx) = (I32)*p++; | |
07bc277f NC |
420 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
421 | RX_OFFS(rx)[i].start = (I32)(*p++); | |
422 | RX_OFFS(rx)[i].end = (I32)(*p++); | |
c90c0ff4 | 423 | } |
424 | } | |
425 | ||
9c105995 NC |
426 | static void |
427 | S_rxres_free(pTHX_ void **rsp) | |
c90c0ff4 | 428 | { |
44f8325f | 429 | UV * const p = (UV*)*rsp; |
7918f24d NC |
430 | |
431 | PERL_ARGS_ASSERT_RXRES_FREE; | |
96a5add6 | 432 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 433 | |
434 | if (p) { | |
94010e71 | 435 | void *tmp = INT2PTR(char*,*p); |
6c31ff74 | 436 | #ifdef PERL_POISON |
db2c6cb3 | 437 | #ifdef PERL_ANY_COW |
6c31ff74 | 438 | U32 i = 9 + p[1] * 2; |
94010e71 | 439 | #else |
6c31ff74 | 440 | U32 i = 8 + p[1] * 2; |
94010e71 | 441 | #endif |
6c31ff74 NC |
442 | #endif |
443 | ||
db2c6cb3 | 444 | #ifdef PERL_ANY_COW |
6c31ff74 | 445 | SvREFCNT_dec (INT2PTR(SV*,p[2])); |
ed252734 | 446 | #endif |
6c31ff74 NC |
447 | #ifdef PERL_POISON |
448 | PoisonFree(p, i, sizeof(UV)); | |
449 | #endif | |
450 | ||
451 | Safefree(tmp); | |
c90c0ff4 | 452 | Safefree(p); |
4608196e | 453 | *rsp = NULL; |
c90c0ff4 | 454 | } |
455 | } | |
456 | ||
a701009a DM |
457 | #define FORM_NUM_BLANK (1<<30) |
458 | #define FORM_NUM_POINT (1<<29) | |
459 | ||
a0d0e21e LW |
460 | PP(pp_formline) |
461 | { | |
20b7effb | 462 | dSP; dMARK; dORIGMARK; |
eb578fdb | 463 | SV * const tmpForm = *++MARK; |
086b26f3 | 464 | SV *formsv; /* contains text of original format */ |
eb578fdb KW |
465 | U32 *fpc; /* format ops program counter */ |
466 | char *t; /* current append position in target string */ | |
086b26f3 | 467 | const char *f; /* current position in format string */ |
eb578fdb KW |
468 | I32 arg; |
469 | SV *sv = NULL; /* current item */ | |
086b26f3 | 470 | const char *item = NULL;/* string value of current item */ |
9b4bdfd4 DM |
471 | I32 itemsize = 0; /* length (chars) of item, possibly truncated */ |
472 | I32 itembytes = 0; /* as itemsize, but length in bytes */ | |
086b26f3 DM |
473 | I32 fieldsize = 0; /* width of current field */ |
474 | I32 lines = 0; /* number of lines that have been output */ | |
475 | bool chopspace = (strchr(PL_chopset, ' ') != NULL); /* does $: have space */ | |
476 | const char *chophere = NULL; /* where to chop current item */ | |
f5ada144 | 477 | STRLEN linemark = 0; /* pos of start of line in output */ |
65202027 | 478 | NV value; |
086b26f3 | 479 | bool gotsome = FALSE; /* seen at least one non-blank item on this line */ |
9b4bdfd4 | 480 | STRLEN len; /* length of current sv */ |
26e935cf | 481 | STRLEN linemax; /* estimate of output size in bytes */ |
1bd51a4c IH |
482 | bool item_is_utf8 = FALSE; |
483 | bool targ_is_utf8 = FALSE; | |
bd7084a6 | 484 | const char *fmt; |
74e0ddf7 | 485 | MAGIC *mg = NULL; |
4ff700b9 DM |
486 | U8 *source; /* source of bytes to append */ |
487 | STRLEN to_copy; /* how may bytes to append */ | |
ea60cfe8 | 488 | char trans; /* what chars to translate */ |
74e0ddf7 | 489 | |
3808a683 | 490 | mg = doparseform(tmpForm); |
a0d0e21e | 491 | |
74e0ddf7 | 492 | fpc = (U32*)mg->mg_ptr; |
3808a683 DM |
493 | /* the actual string the format was compiled from. |
494 | * with overload etc, this may not match tmpForm */ | |
495 | formsv = mg->mg_obj; | |
496 | ||
74e0ddf7 | 497 | |
3280af22 | 498 | SvPV_force(PL_formtarget, len); |
3808a683 | 499 | if (SvTAINTED(tmpForm) || SvTAINTED(formsv)) |
125b9982 | 500 | SvTAINTED_on(PL_formtarget); |
1bd51a4c IH |
501 | if (DO_UTF8(PL_formtarget)) |
502 | targ_is_utf8 = TRUE; | |
26e935cf DM |
503 | linemax = (SvCUR(formsv) * (IN_BYTES ? 1 : 3) + 1); |
504 | t = SvGROW(PL_formtarget, len + linemax + 1); | |
505 | /* XXX from now onwards, SvCUR(PL_formtarget) is invalid */ | |
a0d0e21e | 506 | t += len; |
3808a683 | 507 | f = SvPV_const(formsv, len); |
a0d0e21e LW |
508 | |
509 | for (;;) { | |
510 | DEBUG_f( { | |
bfed75c6 | 511 | const char *name = "???"; |
a0d0e21e LW |
512 | arg = -1; |
513 | switch (*fpc) { | |
514 | case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break; | |
515 | case FF_BLANK: arg = fpc[1]; name = "BLANK"; break; | |
516 | case FF_SKIP: arg = fpc[1]; name = "SKIP"; break; | |
517 | case FF_FETCH: arg = fpc[1]; name = "FETCH"; break; | |
518 | case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break; | |
519 | ||
520 | case FF_CHECKNL: name = "CHECKNL"; break; | |
521 | case FF_CHECKCHOP: name = "CHECKCHOP"; break; | |
522 | case FF_SPACE: name = "SPACE"; break; | |
523 | case FF_HALFSPACE: name = "HALFSPACE"; break; | |
524 | case FF_ITEM: name = "ITEM"; break; | |
525 | case FF_CHOP: name = "CHOP"; break; | |
526 | case FF_LINEGLOB: name = "LINEGLOB"; break; | |
527 | case FF_NEWLINE: name = "NEWLINE"; break; | |
528 | case FF_MORE: name = "MORE"; break; | |
529 | case FF_LINEMARK: name = "LINEMARK"; break; | |
530 | case FF_END: name = "END"; break; | |
bfed75c6 | 531 | case FF_0DECIMAL: name = "0DECIMAL"; break; |
a1b95068 | 532 | case FF_LINESNGL: name = "LINESNGL"; break; |
a0d0e21e LW |
533 | } |
534 | if (arg >= 0) | |
bf49b057 | 535 | PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg); |
a0d0e21e | 536 | else |
bf49b057 | 537 | PerlIO_printf(Perl_debug_log, "%-16s\n", name); |
5f80b19c | 538 | } ); |
a0d0e21e | 539 | switch (*fpc++) { |
4a73dc0b | 540 | case FF_LINEMARK: /* start (or end) of a line */ |
f5ada144 | 541 | linemark = t - SvPVX(PL_formtarget); |
a0d0e21e LW |
542 | lines++; |
543 | gotsome = FALSE; | |
544 | break; | |
545 | ||
4a73dc0b | 546 | case FF_LITERAL: /* append <arg> literal chars */ |
ea60cfe8 DM |
547 | to_copy = *fpc++; |
548 | source = (U8 *)f; | |
549 | f += to_copy; | |
550 | trans = '~'; | |
75645721 | 551 | item_is_utf8 = targ_is_utf8 ? !!DO_UTF8(formsv) : !!SvUTF8(formsv); |
ea60cfe8 | 552 | goto append; |
a0d0e21e | 553 | |
4a73dc0b | 554 | case FF_SKIP: /* skip <arg> chars in format */ |
a0d0e21e LW |
555 | f += *fpc++; |
556 | break; | |
557 | ||
4a73dc0b | 558 | case FF_FETCH: /* get next item and set field size to <arg> */ |
a0d0e21e LW |
559 | arg = *fpc++; |
560 | f += arg; | |
561 | fieldsize = arg; | |
562 | ||
563 | if (MARK < SP) | |
564 | sv = *++MARK; | |
565 | else { | |
3280af22 | 566 | sv = &PL_sv_no; |
a2a5de95 | 567 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments"); |
a0d0e21e | 568 | } |
125b9982 NT |
569 | if (SvTAINTED(sv)) |
570 | SvTAINTED_on(PL_formtarget); | |
a0d0e21e LW |
571 | break; |
572 | ||
4a73dc0b | 573 | case FF_CHECKNL: /* find max len of item (up to \n) that fits field */ |
5a34cab7 | 574 | { |
5a34cab7 | 575 | const char *s = item = SvPV_const(sv, len); |
9b4bdfd4 DM |
576 | const char *send = s + len; |
577 | ||
578 | itemsize = 0; | |
579 | item_is_utf8 = DO_UTF8(sv); | |
580 | while (s < send) { | |
581 | if (!isCNTRL(*s)) | |
582 | gotsome = TRUE; | |
583 | else if (*s == '\n') | |
584 | break; | |
585 | ||
586 | if (item_is_utf8) | |
587 | s += UTF8SKIP(s); | |
588 | else | |
589 | s++; | |
590 | itemsize++; | |
591 | if (itemsize == fieldsize) | |
592 | break; | |
593 | } | |
594 | itembytes = s - item; | |
62db6ea5 | 595 | chophere = s; |
5a34cab7 | 596 | break; |
a0ed51b3 | 597 | } |
a0d0e21e | 598 | |
4a73dc0b | 599 | case FF_CHECKCHOP: /* like CHECKNL, but up to highest split point */ |
5a34cab7 NC |
600 | { |
601 | const char *s = item = SvPV_const(sv, len); | |
9b4bdfd4 DM |
602 | const char *send = s + len; |
603 | I32 size = 0; | |
604 | ||
605 | chophere = NULL; | |
606 | item_is_utf8 = DO_UTF8(sv); | |
607 | while (s < send) { | |
608 | /* look for a legal split position */ | |
609 | if (isSPACE(*s)) { | |
610 | if (*s == '\r') { | |
611 | chophere = s; | |
612 | itemsize = size; | |
613 | break; | |
614 | } | |
615 | if (chopspace) { | |
616 | /* provisional split point */ | |
617 | chophere = s; | |
618 | itemsize = size; | |
619 | } | |
620 | /* we delay testing fieldsize until after we've | |
621 | * processed the possible split char directly | |
622 | * following the last field char; so if fieldsize=3 | |
623 | * and item="a b cdef", we consume "a b", not "a". | |
624 | * Ditto further down. | |
625 | */ | |
626 | if (size == fieldsize) | |
627 | break; | |
628 | } | |
629 | else { | |
630 | if (strchr(PL_chopset, *s)) { | |
631 | /* provisional split point */ | |
632 | /* for a non-space split char, we include | |
633 | * the split char; hence the '+1' */ | |
634 | chophere = s + 1; | |
635 | itemsize = size; | |
636 | } | |
637 | if (size == fieldsize) | |
638 | break; | |
639 | if (!isCNTRL(*s)) | |
640 | gotsome = TRUE; | |
641 | } | |
642 | ||
643 | if (item_is_utf8) | |
644 | s += UTF8SKIP(s); | |
645 | else | |
077dbbf3 | 646 | s++; |
9b4bdfd4 DM |
647 | size++; |
648 | } | |
649 | if (!chophere || s == send) { | |
650 | chophere = s; | |
651 | itemsize = size; | |
652 | } | |
653 | itembytes = chophere - item; | |
654 | ||
5a34cab7 | 655 | break; |
a0d0e21e | 656 | } |
a0d0e21e | 657 | |
4a73dc0b | 658 | case FF_SPACE: /* append padding space (diff of field, item size) */ |
a0d0e21e LW |
659 | arg = fieldsize - itemsize; |
660 | if (arg) { | |
661 | fieldsize -= arg; | |
662 | while (arg-- > 0) | |
663 | *t++ = ' '; | |
664 | } | |
665 | break; | |
666 | ||
4a73dc0b | 667 | case FF_HALFSPACE: /* like FF_SPACE, but only append half as many */ |
a0d0e21e LW |
668 | arg = fieldsize - itemsize; |
669 | if (arg) { | |
670 | arg /= 2; | |
671 | fieldsize -= arg; | |
672 | while (arg-- > 0) | |
673 | *t++ = ' '; | |
674 | } | |
675 | break; | |
676 | ||
4a73dc0b | 677 | case FF_ITEM: /* append a text item, while blanking ctrl chars */ |
9b4bdfd4 | 678 | to_copy = itembytes; |
8aa7beb6 DM |
679 | source = (U8 *)item; |
680 | trans = 1; | |
8aa7beb6 | 681 | goto append; |
a0d0e21e | 682 | |
4a73dc0b | 683 | case FF_CHOP: /* (for ^*) chop the current item */ |
fb9282c3 | 684 | if (sv != &PL_sv_no) { |
5a34cab7 NC |
685 | const char *s = chophere; |
686 | if (chopspace) { | |
af68e756 | 687 | while (isSPACE(*s)) |
5a34cab7 NC |
688 | s++; |
689 | } | |
9b4bdfd4 DM |
690 | if (SvPOKp(sv)) |
691 | sv_chop(sv,s); | |
692 | else | |
693 | /* tied, overloaded or similar strangeness. | |
694 | * Do it the hard way */ | |
695 | sv_setpvn(sv, s, len - (s-item)); | |
5a34cab7 NC |
696 | SvSETMAGIC(sv); |
697 | break; | |
a0d0e21e | 698 | } |
a0d0e21e | 699 | |
4a73dc0b | 700 | case FF_LINESNGL: /* process ^* */ |
a1b95068 | 701 | chopspace = 0; |
c67159e1 | 702 | /* FALLTHROUGH */ |
4a73dc0b DM |
703 | |
704 | case FF_LINEGLOB: /* process @* */ | |
5a34cab7 | 705 | { |
e32383e2 | 706 | const bool oneline = fpc[-1] == FF_LINESNGL; |
5a34cab7 | 707 | const char *s = item = SvPV_const(sv, len); |
7440a75b | 708 | const char *const send = s + len; |
7440a75b | 709 | |
f3f2f1a3 | 710 | item_is_utf8 = DO_UTF8(sv); |
fb9282c3 | 711 | chophere = s + len; |
a1137ee5 | 712 | if (!len) |
7440a75b | 713 | break; |
ea60cfe8 | 714 | trans = 0; |
0d21cefe | 715 | gotsome = TRUE; |
4ff700b9 DM |
716 | source = (U8 *) s; |
717 | to_copy = len; | |
0d21cefe DM |
718 | while (s < send) { |
719 | if (*s++ == '\n') { | |
720 | if (oneline) { | |
9b4bdfd4 | 721 | to_copy = s - item - 1; |
0d21cefe DM |
722 | chophere = s; |
723 | break; | |
724 | } else { | |
725 | if (s == send) { | |
0d21cefe DM |
726 | to_copy--; |
727 | } else | |
728 | lines++; | |
1bd51a4c | 729 | } |
a0d0e21e | 730 | } |
0d21cefe | 731 | } |
a2c0032b DM |
732 | } |
733 | ||
ea60cfe8 DM |
734 | append: |
735 | /* append to_copy bytes from source to PL_formstring. | |
736 | * item_is_utf8 implies source is utf8. | |
737 | * if trans, translate certain characters during the copy */ | |
a2c0032b DM |
738 | { |
739 | U8 *tmp = NULL; | |
26e935cf | 740 | STRLEN grow = 0; |
0325ce87 DM |
741 | |
742 | SvCUR_set(PL_formtarget, | |
743 | t - SvPVX_const(PL_formtarget)); | |
744 | ||
0d21cefe DM |
745 | if (targ_is_utf8 && !item_is_utf8) { |
746 | source = tmp = bytes_to_utf8(source, &to_copy); | |
0d21cefe DM |
747 | } else { |
748 | if (item_is_utf8 && !targ_is_utf8) { | |
f5ada144 | 749 | U8 *s; |
0d21cefe | 750 | /* Upgrade targ to UTF8, and then we reduce it to |
0325ce87 DM |
751 | a problem we have a simple solution for. |
752 | Don't need get magic. */ | |
0d21cefe | 753 | sv_utf8_upgrade_nomg(PL_formtarget); |
0325ce87 | 754 | targ_is_utf8 = TRUE; |
f5ada144 DM |
755 | /* re-calculate linemark */ |
756 | s = (U8*)SvPVX(PL_formtarget); | |
26e935cf DM |
757 | /* the bytes we initially allocated to append the |
758 | * whole line may have been gobbled up during the | |
759 | * upgrade, so allocate a whole new line's worth | |
760 | * for safety */ | |
761 | grow = linemax; | |
f5ada144 DM |
762 | while (linemark--) |
763 | s += UTF8SKIP(s); | |
764 | linemark = s - (U8*)SvPVX(PL_formtarget); | |
e8e72d41 | 765 | } |
0d21cefe DM |
766 | /* Easy. They agree. */ |
767 | assert (item_is_utf8 == targ_is_utf8); | |
768 | } | |
26e935cf DM |
769 | if (!trans) |
770 | /* @* and ^* are the only things that can exceed | |
771 | * the linemax, so grow by the output size, plus | |
772 | * a whole new form's worth in case of any further | |
773 | * output */ | |
774 | grow = linemax + to_copy; | |
775 | if (grow) | |
776 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + grow + 1); | |
0d21cefe DM |
777 | t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget); |
778 | ||
779 | Copy(source, t, to_copy, char); | |
ea60cfe8 | 780 | if (trans) { |
8aa7beb6 DM |
781 | /* blank out ~ or control chars, depending on trans. |
782 | * works on bytes not chars, so relies on not | |
783 | * matching utf8 continuation bytes */ | |
ea60cfe8 DM |
784 | U8 *s = (U8*)t; |
785 | U8 *send = s + to_copy; | |
786 | while (s < send) { | |
8aa7beb6 | 787 | const int ch = *s; |
077dbbf3 | 788 | if (trans == '~' ? (ch == '~') : isCNTRL(ch)) |
ea60cfe8 DM |
789 | *s = ' '; |
790 | s++; | |
791 | } | |
792 | } | |
793 | ||
0d21cefe DM |
794 | t += to_copy; |
795 | SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) + to_copy); | |
a1137ee5 | 796 | if (tmp) |
0d21cefe | 797 | Safefree(tmp); |
5a34cab7 | 798 | break; |
a0d0e21e | 799 | } |
a0d0e21e | 800 | |
4a73dc0b | 801 | case FF_0DECIMAL: /* like FF_DECIMAL but for 0### */ |
a0d0e21e | 802 | arg = *fpc++; |
bd7084a6 | 803 | fmt = (const char *) |
a029fa42 | 804 | ((arg & FORM_NUM_POINT) ? "%#0*.*" NVff : "%0*.*" NVff); |
bd7084a6 | 805 | goto ff_dec; |
5d37acd6 | 806 | |
bd7084a6 DM |
807 | case FF_DECIMAL: /* do @##, ^##, where <arg>=(precision|flags) */ |
808 | arg = *fpc++; | |
bd7084a6 | 809 | fmt = (const char *) |
a029fa42 | 810 | ((arg & FORM_NUM_POINT) ? "%#*.*" NVff : "%*.*" NVff); |
bd7084a6 | 811 | ff_dec: |
784707d5 JP |
812 | /* If the field is marked with ^ and the value is undefined, |
813 | blank it out. */ | |
a701009a | 814 | if ((arg & FORM_NUM_BLANK) && !SvOK(sv)) { |
784707d5 JP |
815 | arg = fieldsize; |
816 | while (arg--) | |
817 | *t++ = ' '; | |
818 | break; | |
819 | } | |
820 | gotsome = TRUE; | |
821 | value = SvNV(sv); | |
a1b95068 | 822 | /* overflow evidence */ |
bfed75c6 | 823 | if (num_overflow(value, fieldsize, arg)) { |
a1b95068 WL |
824 | arg = fieldsize; |
825 | while (arg--) | |
826 | *t++ = '#'; | |
827 | break; | |
828 | } | |
784707d5 JP |
829 | /* Formats aren't yet marked for locales, so assume "yes". */ |
830 | { | |
e8549682 JH |
831 | Size_t max = SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)); |
832 | int len; | |
67d796ae KW |
833 | DECLARATION_FOR_LC_NUMERIC_MANIPULATION; |
834 | STORE_LC_NUMERIC_SET_TO_NEEDED(); | |
51f14a05 | 835 | arg &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
a4eca1d4 JH |
836 | #ifdef USE_QUADMATH |
837 | { | |
838 | const char* qfmt = quadmath_format_single(fmt); | |
839 | int len; | |
840 | if (!qfmt) | |
841 | Perl_croak_nocontext("panic: quadmath invalid format \"%s\"", fmt); | |
842 | len = quadmath_snprintf(t, max, qfmt, (int) fieldsize, (int) arg, value); | |
843 | if (len == -1) | |
844 | Perl_croak_nocontext("panic: quadmath_snprintf failed, format \"%s\"", qfmt); | |
845 | if (qfmt != fmt) | |
846 | Safefree(fmt); | |
847 | } | |
848 | #else | |
b587c0e8 DM |
849 | /* we generate fmt ourselves so it is safe */ |
850 | GCC_DIAG_IGNORE(-Wformat-nonliteral); | |
e8549682 | 851 | len = my_snprintf(t, max, fmt, (int) fieldsize, (int) arg, value); |
b587c0e8 | 852 | GCC_DIAG_RESTORE; |
a4eca1d4 JH |
853 | #endif |
854 | PERL_MY_SNPRINTF_POST_GUARD(len, max); | |
a2287a13 | 855 | RESTORE_LC_NUMERIC(); |
784707d5 JP |
856 | } |
857 | t += fieldsize; | |
858 | break; | |
a1b95068 | 859 | |
4a73dc0b | 860 | case FF_NEWLINE: /* delete trailing spaces, then append \n */ |
a0d0e21e | 861 | f++; |
f5ada144 | 862 | while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ') ; |
a0d0e21e LW |
863 | t++; |
864 | *t++ = '\n'; | |
865 | break; | |
866 | ||
4a73dc0b | 867 | case FF_BLANK: /* for arg==0: do '~'; for arg>0 : do '~~' */ |
a0d0e21e LW |
868 | arg = *fpc++; |
869 | if (gotsome) { | |
870 | if (arg) { /* repeat until fields exhausted? */ | |
11f9eeaf DM |
871 | fpc--; |
872 | goto end; | |
a0d0e21e LW |
873 | } |
874 | } | |
875 | else { | |
f5ada144 | 876 | t = SvPVX(PL_formtarget) + linemark; |
a0d0e21e LW |
877 | lines--; |
878 | } | |
879 | break; | |
880 | ||
4a73dc0b | 881 | case FF_MORE: /* replace long end of string with '...' */ |
5a34cab7 NC |
882 | { |
883 | const char *s = chophere; | |
884 | const char *send = item + len; | |
885 | if (chopspace) { | |
af68e756 | 886 | while (isSPACE(*s) && (s < send)) |
5a34cab7 | 887 | s++; |
a0d0e21e | 888 | } |
5a34cab7 NC |
889 | if (s < send) { |
890 | char *s1; | |
891 | arg = fieldsize - itemsize; | |
892 | if (arg) { | |
893 | fieldsize -= arg; | |
894 | while (arg-- > 0) | |
895 | *t++ = ' '; | |
896 | } | |
897 | s1 = t - 3; | |
898 | if (strnEQ(s1," ",3)) { | |
899 | while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1])) | |
900 | s1--; | |
901 | } | |
902 | *s1++ = '.'; | |
903 | *s1++ = '.'; | |
904 | *s1++ = '.'; | |
a0d0e21e | 905 | } |
5a34cab7 | 906 | break; |
a0d0e21e | 907 | } |
4a73dc0b DM |
908 | |
909 | case FF_END: /* tidy up, then return */ | |
11f9eeaf | 910 | end: |
bf2bec63 | 911 | assert(t < SvPVX_const(PL_formtarget) + SvLEN(PL_formtarget)); |
a0d0e21e | 912 | *t = '\0'; |
b15aece3 | 913 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
1bd51a4c IH |
914 | if (targ_is_utf8) |
915 | SvUTF8_on(PL_formtarget); | |
3280af22 | 916 | FmLINES(PL_formtarget) += lines; |
a0d0e21e | 917 | SP = ORIGMARK; |
11f9eeaf DM |
918 | if (fpc[-1] == FF_BLANK) |
919 | RETURNOP(cLISTOP->op_first); | |
920 | else | |
921 | RETPUSHYES; | |
a0d0e21e LW |
922 | } |
923 | } | |
924 | } | |
925 | ||
926 | PP(pp_grepstart) | |
927 | { | |
20b7effb | 928 | dSP; |
a0d0e21e LW |
929 | SV *src; |
930 | ||
3280af22 | 931 | if (PL_stack_base + *PL_markstack_ptr == SP) { |
a0d0e21e | 932 | (void)POPMARK; |
54310121 | 933 | if (GIMME_V == G_SCALAR) |
6e449a3a | 934 | mXPUSHi(0); |
533c011a | 935 | RETURNOP(PL_op->op_next->op_next); |
a0d0e21e | 936 | } |
3280af22 | 937 | PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1; |
897d3989 NC |
938 | Perl_pp_pushmark(aTHX); /* push dst */ |
939 | Perl_pp_pushmark(aTHX); /* push src */ | |
d343c3ef | 940 | ENTER_with_name("grep"); /* enter outer scope */ |
a0d0e21e LW |
941 | |
942 | SAVETMPS; | |
59f00321 RGS |
943 | if (PL_op->op_private & OPpGREP_LEX) |
944 | SAVESPTR(PAD_SVl(PL_op->op_targ)); | |
945 | else | |
946 | SAVE_DEFSV; | |
d343c3ef | 947 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 948 | SAVEVPTR(PL_curpm); |
a0d0e21e | 949 | |
3280af22 | 950 | src = PL_stack_base[*PL_markstack_ptr]; |
60779a30 | 951 | if (SvPADTMP(src)) { |
a0ed822e FC |
952 | src = PL_stack_base[*PL_markstack_ptr] = sv_mortalcopy(src); |
953 | PL_tmps_floor++; | |
954 | } | |
a0d0e21e | 955 | SvTEMP_off(src); |
59f00321 RGS |
956 | if (PL_op->op_private & OPpGREP_LEX) |
957 | PAD_SVl(PL_op->op_targ) = src; | |
958 | else | |
414bf5ae | 959 | DEFSV_set(src); |
a0d0e21e LW |
960 | |
961 | PUTBACK; | |
533c011a | 962 | if (PL_op->op_type == OP_MAPSTART) |
897d3989 | 963 | Perl_pp_pushmark(aTHX); /* push top */ |
533c011a | 964 | return ((LOGOP*)PL_op->op_next)->op_other; |
a0d0e21e LW |
965 | } |
966 | ||
a0d0e21e LW |
967 | PP(pp_mapwhile) |
968 | { | |
20b7effb | 969 | dSP; |
f54cb97a | 970 | const I32 gimme = GIMME_V; |
544f3153 | 971 | I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */ |
a0d0e21e LW |
972 | I32 count; |
973 | I32 shift; | |
974 | SV** src; | |
ac27b0f5 | 975 | SV** dst; |
a0d0e21e | 976 | |
544f3153 | 977 | /* first, move source pointer to the next item in the source list */ |
3280af22 | 978 | ++PL_markstack_ptr[-1]; |
544f3153 GS |
979 | |
980 | /* if there are new items, push them into the destination list */ | |
4c90a460 | 981 | if (items && gimme != G_VOID) { |
544f3153 GS |
982 | /* might need to make room back there first */ |
983 | if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) { | |
984 | /* XXX this implementation is very pessimal because the stack | |
985 | * is repeatedly extended for every set of items. Is possible | |
986 | * to do this without any stack extension or copying at all | |
987 | * by maintaining a separate list over which the map iterates | |
18ef8bea | 988 | * (like foreach does). --gsar */ |
544f3153 GS |
989 | |
990 | /* everything in the stack after the destination list moves | |
991 | * towards the end the stack by the amount of room needed */ | |
992 | shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]); | |
993 | ||
994 | /* items to shift up (accounting for the moved source pointer) */ | |
995 | count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1); | |
18ef8bea BT |
996 | |
997 | /* This optimization is by Ben Tilly and it does | |
998 | * things differently from what Sarathy (gsar) | |
999 | * is describing. The downside of this optimization is | |
1000 | * that leaves "holes" (uninitialized and hopefully unused areas) | |
1001 | * to the Perl stack, but on the other hand this | |
1002 | * shouldn't be a problem. If Sarathy's idea gets | |
1003 | * implemented, this optimization should become | |
1004 | * irrelevant. --jhi */ | |
1005 | if (shift < count) | |
1006 | shift = count; /* Avoid shifting too often --Ben Tilly */ | |
bfed75c6 | 1007 | |
924508f0 GS |
1008 | EXTEND(SP,shift); |
1009 | src = SP; | |
1010 | dst = (SP += shift); | |
3280af22 NIS |
1011 | PL_markstack_ptr[-1] += shift; |
1012 | *PL_markstack_ptr += shift; | |
544f3153 | 1013 | while (count--) |
a0d0e21e LW |
1014 | *dst-- = *src--; |
1015 | } | |
544f3153 | 1016 | /* copy the new items down to the destination list */ |
ac27b0f5 | 1017 | dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1; |
22023b26 | 1018 | if (gimme == G_ARRAY) { |
b2a2a901 DM |
1019 | /* add returned items to the collection (making mortal copies |
1020 | * if necessary), then clear the current temps stack frame | |
1021 | * *except* for those items. We do this splicing the items | |
1022 | * into the start of the tmps frame (so some items may be on | |
59d53fd6 | 1023 | * the tmps stack twice), then moving PL_tmps_floor above |
b2a2a901 DM |
1024 | * them, then freeing the frame. That way, the only tmps that |
1025 | * accumulate over iterations are the return values for map. | |
1026 | * We have to do to this way so that everything gets correctly | |
1027 | * freed if we die during the map. | |
1028 | */ | |
1029 | I32 tmpsbase; | |
1030 | I32 i = items; | |
1031 | /* make space for the slice */ | |
1032 | EXTEND_MORTAL(items); | |
1033 | tmpsbase = PL_tmps_floor + 1; | |
1034 | Move(PL_tmps_stack + tmpsbase, | |
1035 | PL_tmps_stack + tmpsbase + items, | |
1036 | PL_tmps_ix - PL_tmps_floor, | |
1037 | SV*); | |
1038 | PL_tmps_ix += items; | |
1039 | ||
1040 | while (i-- > 0) { | |
1041 | SV *sv = POPs; | |
1042 | if (!SvTEMP(sv)) | |
1043 | sv = sv_mortalcopy(sv); | |
1044 | *dst-- = sv; | |
1045 | PL_tmps_stack[tmpsbase++] = SvREFCNT_inc_simple(sv); | |
1046 | } | |
1047 | /* clear the stack frame except for the items */ | |
1048 | PL_tmps_floor += items; | |
1049 | FREETMPS; | |
1050 | /* FREETMPS may have cleared the TEMP flag on some of the items */ | |
1051 | i = items; | |
1052 | while (i-- > 0) | |
1053 | SvTEMP_on(PL_tmps_stack[--tmpsbase]); | |
22023b26 | 1054 | } |
bfed75c6 | 1055 | else { |
22023b26 TP |
1056 | /* scalar context: we don't care about which values map returns |
1057 | * (we use undef here). And so we certainly don't want to do mortal | |
1058 | * copies of meaningless values. */ | |
1059 | while (items-- > 0) { | |
b988aa42 | 1060 | (void)POPs; |
22023b26 TP |
1061 | *dst-- = &PL_sv_undef; |
1062 | } | |
b2a2a901 | 1063 | FREETMPS; |
22023b26 | 1064 | } |
a0d0e21e | 1065 | } |
b2a2a901 DM |
1066 | else { |
1067 | FREETMPS; | |
1068 | } | |
d343c3ef | 1069 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
1070 | |
1071 | /* All done yet? */ | |
3280af22 | 1072 | if (PL_markstack_ptr[-1] > *PL_markstack_ptr) { |
a0d0e21e LW |
1073 | |
1074 | (void)POPMARK; /* pop top */ | |
d343c3ef | 1075 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 1076 | (void)POPMARK; /* pop src */ |
3280af22 | 1077 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 1078 | (void)POPMARK; /* pop dst */ |
3280af22 | 1079 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 1080 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
1081 | if (PL_op->op_private & OPpGREP_LEX) { |
1082 | SV* sv = sv_newmortal(); | |
1083 | sv_setiv(sv, items); | |
1084 | PUSHs(sv); | |
1085 | } | |
1086 | else { | |
1087 | dTARGET; | |
1088 | XPUSHi(items); | |
1089 | } | |
a0d0e21e | 1090 | } |
54310121 | 1091 | else if (gimme == G_ARRAY) |
1092 | SP += items; | |
a0d0e21e LW |
1093 | RETURN; |
1094 | } | |
1095 | else { | |
1096 | SV *src; | |
1097 | ||
d343c3ef | 1098 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1099 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1100 | |
544f3153 | 1101 | /* set $_ to the new source item */ |
3280af22 | 1102 | src = PL_stack_base[PL_markstack_ptr[-1]]; |
60779a30 | 1103 | if (SvPADTMP(src)) { |
60779a30 DM |
1104 | src = sv_mortalcopy(src); |
1105 | } | |
a0d0e21e | 1106 | SvTEMP_off(src); |
59f00321 RGS |
1107 | if (PL_op->op_private & OPpGREP_LEX) |
1108 | PAD_SVl(PL_op->op_targ) = src; | |
1109 | else | |
414bf5ae | 1110 | DEFSV_set(src); |
a0d0e21e LW |
1111 | |
1112 | RETURNOP(cLOGOP->op_other); | |
1113 | } | |
1114 | } | |
1115 | ||
a0d0e21e LW |
1116 | /* Range stuff. */ |
1117 | ||
1118 | PP(pp_range) | |
1119 | { | |
82334630 | 1120 | if (GIMME_V == G_ARRAY) |
1a67a97c | 1121 | return NORMAL; |
538573f7 | 1122 | if (SvTRUEx(PAD_SV(PL_op->op_targ))) |
1a67a97c | 1123 | return cLOGOP->op_other; |
538573f7 | 1124 | else |
1a67a97c | 1125 | return NORMAL; |
a0d0e21e LW |
1126 | } |
1127 | ||
1128 | PP(pp_flip) | |
1129 | { | |
39644a26 | 1130 | dSP; |
a0d0e21e | 1131 | |
82334630 | 1132 | if (GIMME_V == G_ARRAY) { |
1a67a97c | 1133 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1134 | } |
1135 | else { | |
1136 | dTOPss; | |
44f8325f | 1137 | SV * const targ = PAD_SV(PL_op->op_targ); |
bfed75c6 | 1138 | int flip = 0; |
790090df | 1139 | |
bfed75c6 | 1140 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
4e3399f9 YST |
1141 | if (GvIO(PL_last_in_gv)) { |
1142 | flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1143 | } | |
1144 | else { | |
fafc274c | 1145 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
44f8325f AL |
1146 | if (gv && GvSV(gv)) |
1147 | flip = SvIV(sv) == SvIV(GvSV(gv)); | |
4e3399f9 | 1148 | } |
bfed75c6 AL |
1149 | } else { |
1150 | flip = SvTRUE(sv); | |
1151 | } | |
1152 | if (flip) { | |
a0d0e21e | 1153 | sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1); |
533c011a | 1154 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1155 | sv_setiv(targ, 1); |
3e3baf6d | 1156 | SETs(targ); |
a0d0e21e LW |
1157 | RETURN; |
1158 | } | |
1159 | else { | |
1160 | sv_setiv(targ, 0); | |
924508f0 | 1161 | SP--; |
1a67a97c | 1162 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1163 | } |
1164 | } | |
76f68e9b | 1165 | sv_setpvs(TARG, ""); |
a0d0e21e LW |
1166 | SETs(targ); |
1167 | RETURN; | |
1168 | } | |
1169 | } | |
1170 | ||
8e9bbdb9 RGS |
1171 | /* This code tries to decide if "$left .. $right" should use the |
1172 | magical string increment, or if the range is numeric (we make | |
1173 | an exception for .."0" [#18165]). AMS 20021031. */ | |
1174 | ||
1175 | #define RANGE_IS_NUMERIC(left,right) ( \ | |
b0e74086 RGS |
1176 | SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \ |
1177 | SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \ | |
e0ab1c0e | 1178 | (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \ |
b15aece3 | 1179 | looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \ |
e0ab1c0e | 1180 | && (!SvOK(right) || looks_like_number(right)))) |
8e9bbdb9 | 1181 | |
a0d0e21e LW |
1182 | PP(pp_flop) |
1183 | { | |
20b7effb | 1184 | dSP; |
a0d0e21e | 1185 | |
82334630 | 1186 | if (GIMME_V == G_ARRAY) { |
a0d0e21e | 1187 | dPOPPOPssrl; |
86cb7173 | 1188 | |
5b295bef RD |
1189 | SvGETMAGIC(left); |
1190 | SvGETMAGIC(right); | |
a0d0e21e | 1191 | |
8e9bbdb9 | 1192 | if (RANGE_IS_NUMERIC(left,right)) { |
b262c4c9 | 1193 | IV i, j, n; |
4d91eccc FC |
1194 | if ((SvOK(left) && !SvIOK(left) && SvNV_nomg(left) < IV_MIN) || |
1195 | (SvOK(right) && (SvIOK(right) | |
1196 | ? SvIsUV(right) && SvUV(right) > IV_MAX | |
1197 | : SvNV_nomg(right) > IV_MAX))) | |
d470f89e | 1198 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad | 1199 | i = SvIV_nomg(left); |
b262c4c9 JH |
1200 | j = SvIV_nomg(right); |
1201 | if (j >= i) { | |
1202 | /* Dance carefully around signed max. */ | |
1203 | bool overflow = (i <= 0 && j > SSize_t_MAX + i - 1); | |
1204 | if (!overflow) { | |
1205 | n = j - i + 1; | |
1206 | /* The wraparound of signed integers is undefined | |
1207 | * behavior, but here we aim for count >=1, and | |
1208 | * negative count is just wrong. */ | |
a1e27170 TC |
1209 | if (n < 1 |
1210 | #if IVSIZE > Size_t_size | |
1211 | || n > SSize_t_MAX | |
1212 | #endif | |
1213 | ) | |
b262c4c9 JH |
1214 | overflow = TRUE; |
1215 | } | |
1216 | if (overflow) | |
1217 | Perl_croak(aTHX_ "Out of memory during list extend"); | |
1218 | EXTEND_MORTAL(n); | |
1219 | EXTEND(SP, n); | |
bbce6d69 | 1220 | } |
c1ab3db2 | 1221 | else |
b262c4c9 JH |
1222 | n = 0; |
1223 | while (n--) { | |
fc01cab4 | 1224 | SV * const sv = sv_2mortal(newSViv(i)); |
a0d0e21e | 1225 | PUSHs(sv); |
fc01cab4 DM |
1226 | if (n) /* avoid incrementing above IV_MAX */ |
1227 | i++; | |
a0d0e21e LW |
1228 | } |
1229 | } | |
1230 | else { | |
3c323193 FC |
1231 | STRLEN len, llen; |
1232 | const char * const lpv = SvPV_nomg_const(left, llen); | |
f52e41ad | 1233 | const char * const tmps = SvPV_nomg_const(right, len); |
a0d0e21e | 1234 | |
3c323193 | 1235 | SV *sv = newSVpvn_flags(lpv, llen, SvUTF8(left)|SVs_TEMP); |
89ea2908 | 1236 | while (!SvNIOKp(sv) && SvCUR(sv) <= len) { |
a0d0e21e | 1237 | XPUSHs(sv); |
b15aece3 | 1238 | if (strEQ(SvPVX_const(sv),tmps)) |
89ea2908 | 1239 | break; |
a0d0e21e LW |
1240 | sv = sv_2mortal(newSVsv(sv)); |
1241 | sv_inc(sv); | |
1242 | } | |
a0d0e21e LW |
1243 | } |
1244 | } | |
1245 | else { | |
1246 | dTOPss; | |
901017d6 | 1247 | SV * const targ = PAD_SV(cUNOP->op_first->op_targ); |
4e3399f9 | 1248 | int flop = 0; |
a0d0e21e | 1249 | sv_inc(targ); |
4e3399f9 YST |
1250 | |
1251 | if (PL_op->op_private & OPpFLIP_LINENUM) { | |
1252 | if (GvIO(PL_last_in_gv)) { | |
1253 | flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1254 | } | |
1255 | else { | |
fafc274c | 1256 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
4e3399f9 YST |
1257 | if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv)); |
1258 | } | |
1259 | } | |
1260 | else { | |
1261 | flop = SvTRUE(sv); | |
1262 | } | |
1263 | ||
1264 | if (flop) { | |
a0d0e21e | 1265 | sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0); |
396482e1 | 1266 | sv_catpvs(targ, "E0"); |
a0d0e21e LW |
1267 | } |
1268 | SETs(targ); | |
1269 | } | |
1270 | ||
1271 | RETURN; | |
1272 | } | |
1273 | ||
1274 | /* Control. */ | |
1275 | ||
27da23d5 | 1276 | static const char * const context_name[] = { |
515afda2 | 1277 | "pseudo-block", |
f31522f3 | 1278 | NULL, /* CXt_WHEN never actually needs "block" */ |
76753e7f | 1279 | NULL, /* CXt_BLOCK never actually needs "block" */ |
f31522f3 | 1280 | NULL, /* CXt_GIVEN never actually needs "block" */ |
76753e7f NC |
1281 | NULL, /* CXt_LOOP_FOR never actually needs "loop" */ |
1282 | NULL, /* CXt_LOOP_PLAIN never actually needs "loop" */ | |
1283 | NULL, /* CXt_LOOP_LAZYSV never actually needs "loop" */ | |
1284 | NULL, /* CXt_LOOP_LAZYIV never actually needs "loop" */ | |
515afda2 | 1285 | "subroutine", |
76753e7f | 1286 | "format", |
515afda2 | 1287 | "eval", |
515afda2 | 1288 | "substitution", |
515afda2 NC |
1289 | }; |
1290 | ||
76e3520e | 1291 | STATIC I32 |
5db1eb8d | 1292 | S_dopoptolabel(pTHX_ const char *label, STRLEN len, U32 flags) |
a0d0e21e | 1293 | { |
eb578fdb | 1294 | I32 i; |
a0d0e21e | 1295 | |
7918f24d NC |
1296 | PERL_ARGS_ASSERT_DOPOPTOLABEL; |
1297 | ||
a0d0e21e | 1298 | for (i = cxstack_ix; i >= 0; i--) { |
eb578fdb | 1299 | const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1300 | switch (CxTYPE(cx)) { |
a0d0e21e | 1301 | case CXt_SUBST: |
a0d0e21e | 1302 | case CXt_SUB: |
7766f137 | 1303 | case CXt_FORMAT: |
a0d0e21e | 1304 | case CXt_EVAL: |
0a753a76 | 1305 | case CXt_NULL: |
dcbac5bb | 1306 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1307 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1308 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1309 | if (CxTYPE(cx) == CXt_NULL) |
1310 | return -1; | |
1311 | break; | |
c6fdafd0 | 1312 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1313 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1314 | case CXt_LOOP_FOR: |
1315 | case CXt_LOOP_PLAIN: | |
7e8f1eac | 1316 | { |
5db1eb8d BF |
1317 | STRLEN cx_label_len = 0; |
1318 | U32 cx_label_flags = 0; | |
1319 | const char *cx_label = CxLABEL_len_flags(cx, &cx_label_len, &cx_label_flags); | |
1320 | if (!cx_label || !( | |
1321 | ( (cx_label_flags & SVf_UTF8) != (flags & SVf_UTF8) ) ? | |
1322 | (flags & SVf_UTF8) | |
1323 | ? (bytes_cmp_utf8( | |
1324 | (const U8*)cx_label, cx_label_len, | |
1325 | (const U8*)label, len) == 0) | |
1326 | : (bytes_cmp_utf8( | |
1327 | (const U8*)label, len, | |
1328 | (const U8*)cx_label, cx_label_len) == 0) | |
eade7155 BF |
1329 | : (len == cx_label_len && ((cx_label == label) |
1330 | || memEQ(cx_label, label, len))) )) { | |
1c98cc53 | 1331 | DEBUG_l(Perl_deb(aTHX_ "(poptolabel(): skipping label at cx=%ld %s)\n", |
7e8f1eac | 1332 | (long)i, cx_label)); |
a0d0e21e LW |
1333 | continue; |
1334 | } | |
1c98cc53 | 1335 | DEBUG_l( Perl_deb(aTHX_ "(poptolabel(): found label at cx=%ld %s)\n", (long)i, label)); |
a0d0e21e | 1336 | return i; |
7e8f1eac | 1337 | } |
a0d0e21e LW |
1338 | } |
1339 | } | |
1340 | return i; | |
1341 | } | |
1342 | ||
0d863452 RH |
1343 | |
1344 | ||
e50aee73 | 1345 | I32 |
864dbfa3 | 1346 | Perl_dowantarray(pTHX) |
e50aee73 | 1347 | { |
f54cb97a | 1348 | const I32 gimme = block_gimme(); |
54310121 | 1349 | return (gimme == G_VOID) ? G_SCALAR : gimme; |
1350 | } | |
1351 | ||
1352 | I32 | |
864dbfa3 | 1353 | Perl_block_gimme(pTHX) |
54310121 | 1354 | { |
06b5626a | 1355 | const I32 cxix = dopoptosub(cxstack_ix); |
a05700a8 | 1356 | U8 gimme; |
e50aee73 | 1357 | if (cxix < 0) |
46fc3d4c | 1358 | return G_VOID; |
e50aee73 | 1359 | |
a05700a8 DM |
1360 | gimme = (cxstack[cxix].blk_gimme & G_WANT); |
1361 | if (!gimme) | |
1362 | Perl_croak(aTHX_ "panic: bad gimme: %d\n", gimme); | |
1363 | return gimme; | |
e50aee73 AD |
1364 | } |
1365 | ||
a05700a8 | 1366 | |
78f9721b SM |
1367 | I32 |
1368 | Perl_is_lvalue_sub(pTHX) | |
1369 | { | |
06b5626a | 1370 | const I32 cxix = dopoptosub(cxstack_ix); |
78f9721b SM |
1371 | assert(cxix >= 0); /* We should only be called from inside subs */ |
1372 | ||
bafb2adc NC |
1373 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) |
1374 | return CxLVAL(cxstack + cxix); | |
78f9721b SM |
1375 | else |
1376 | return 0; | |
1377 | } | |
1378 | ||
777d9014 FC |
1379 | /* only used by PUSHSUB */ |
1380 | I32 | |
1381 | Perl_was_lvalue_sub(pTHX) | |
1382 | { | |
777d9014 FC |
1383 | const I32 cxix = dopoptosub(cxstack_ix-1); |
1384 | assert(cxix >= 0); /* We should only be called from inside subs */ | |
1385 | ||
1386 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) | |
1387 | return CxLVAL(cxstack + cxix); | |
1388 | else | |
1389 | return 0; | |
1390 | } | |
1391 | ||
76e3520e | 1392 | STATIC I32 |
901017d6 | 1393 | S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock) |
2c375eb9 | 1394 | { |
a0d0e21e | 1395 | I32 i; |
7918f24d NC |
1396 | |
1397 | PERL_ARGS_ASSERT_DOPOPTOSUB_AT; | |
81611534 JH |
1398 | #ifndef DEBUGGING |
1399 | PERL_UNUSED_CONTEXT; | |
1400 | #endif | |
7918f24d | 1401 | |
a0d0e21e | 1402 | for (i = startingblock; i >= 0; i--) { |
eb578fdb | 1403 | const PERL_CONTEXT * const cx = &cxstk[i]; |
6b35e009 | 1404 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1405 | default: |
1406 | continue; | |
a0d0e21e | 1407 | case CXt_SUB: |
5fbe8311 DM |
1408 | /* in sub foo { /(?{...})/ }, foo ends up on the CX stack |
1409 | * twice; the first for the normal foo() call, and the second | |
1410 | * for a faked up re-entry into the sub to execute the | |
1411 | * code block. Hide this faked entry from the world. */ | |
1412 | if (cx->cx_type & CXp_SUB_RE_FAKE) | |
1413 | continue; | |
c67159e1 | 1414 | /* FALLTHROUGH */ |
5fbe8311 | 1415 | case CXt_EVAL: |
7766f137 | 1416 | case CXt_FORMAT: |
1c98cc53 | 1417 | DEBUG_l( Perl_deb(aTHX_ "(dopoptosub_at(): found sub at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1418 | return i; |
1419 | } | |
1420 | } | |
1421 | return i; | |
1422 | } | |
1423 | ||
76e3520e | 1424 | STATIC I32 |
cea2e8a9 | 1425 | S_dopoptoeval(pTHX_ I32 startingblock) |
a0d0e21e LW |
1426 | { |
1427 | I32 i; | |
a0d0e21e | 1428 | for (i = startingblock; i >= 0; i--) { |
eb578fdb | 1429 | const PERL_CONTEXT *cx = &cxstack[i]; |
6b35e009 | 1430 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1431 | default: |
1432 | continue; | |
1433 | case CXt_EVAL: | |
1c98cc53 | 1434 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoeval(): found eval at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1435 | return i; |
1436 | } | |
1437 | } | |
1438 | return i; | |
1439 | } | |
1440 | ||
76e3520e | 1441 | STATIC I32 |
cea2e8a9 | 1442 | S_dopoptoloop(pTHX_ I32 startingblock) |
a0d0e21e LW |
1443 | { |
1444 | I32 i; | |
a0d0e21e | 1445 | for (i = startingblock; i >= 0; i--) { |
eb578fdb | 1446 | const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1447 | switch (CxTYPE(cx)) { |
a0d0e21e | 1448 | case CXt_SUBST: |
a0d0e21e | 1449 | case CXt_SUB: |
7766f137 | 1450 | case CXt_FORMAT: |
a0d0e21e | 1451 | case CXt_EVAL: |
0a753a76 | 1452 | case CXt_NULL: |
dcbac5bb | 1453 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1454 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1455 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1456 | if ((CxTYPE(cx)) == CXt_NULL) |
1457 | return -1; | |
1458 | break; | |
c6fdafd0 | 1459 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1460 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1461 | case CXt_LOOP_FOR: |
1462 | case CXt_LOOP_PLAIN: | |
1c98cc53 | 1463 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoloop(): found loop at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1464 | return i; |
1465 | } | |
1466 | } | |
1467 | return i; | |
1468 | } | |
1469 | ||
0d863452 RH |
1470 | STATIC I32 |
1471 | S_dopoptogiven(pTHX_ I32 startingblock) | |
1472 | { | |
1473 | I32 i; | |
1474 | for (i = startingblock; i >= 0; i--) { | |
eb578fdb | 1475 | const PERL_CONTEXT *cx = &cxstack[i]; |
0d863452 RH |
1476 | switch (CxTYPE(cx)) { |
1477 | default: | |
1478 | continue; | |
1479 | case CXt_GIVEN: | |
1c98cc53 | 1480 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found given at cx=%ld)\n", (long)i)); |
0d863452 | 1481 | return i; |
3b719c58 NC |
1482 | case CXt_LOOP_PLAIN: |
1483 | assert(!CxFOREACHDEF(cx)); | |
1484 | break; | |
c6fdafd0 | 1485 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1486 | case CXt_LOOP_LAZYSV: |
3b719c58 | 1487 | case CXt_LOOP_FOR: |
0d863452 | 1488 | if (CxFOREACHDEF(cx)) { |
1c98cc53 | 1489 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found foreach at cx=%ld)\n", (long)i)); |
0d863452 RH |
1490 | return i; |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | return i; | |
1495 | } | |
1496 | ||
1497 | STATIC I32 | |
1498 | S_dopoptowhen(pTHX_ I32 startingblock) | |
1499 | { | |
1500 | I32 i; | |
1501 | for (i = startingblock; i >= 0; i--) { | |
eb578fdb | 1502 | const PERL_CONTEXT *cx = &cxstack[i]; |
0d863452 RH |
1503 | switch (CxTYPE(cx)) { |
1504 | default: | |
1505 | continue; | |
1506 | case CXt_WHEN: | |
1c98cc53 | 1507 | DEBUG_l( Perl_deb(aTHX_ "(dopoptowhen(): found when at cx=%ld)\n", (long)i)); |
0d863452 RH |
1508 | return i; |
1509 | } | |
1510 | } | |
1511 | return i; | |
1512 | } | |
1513 | ||
a0d0e21e | 1514 | void |
864dbfa3 | 1515 | Perl_dounwind(pTHX_ I32 cxix) |
a0d0e21e | 1516 | { |
a0d0e21e LW |
1517 | I32 optype; |
1518 | ||
f144f1e3 DM |
1519 | if (!PL_curstackinfo) /* can happen if die during thread cloning */ |
1520 | return; | |
1521 | ||
a0d0e21e | 1522 | while (cxstack_ix > cxix) { |
b0d9ce38 | 1523 | SV *sv; |
eb578fdb | 1524 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1c98cc53 | 1525 | DEBUG_CX("UNWIND"); \ |
a0d0e21e | 1526 | /* Note: we don't need to restore the base context info till the end. */ |
6b35e009 | 1527 | switch (CxTYPE(cx)) { |
c90c0ff4 | 1528 | case CXt_SUBST: |
1529 | POPSUBST(cx); | |
1530 | continue; /* not break */ | |
a0d0e21e | 1531 | case CXt_SUB: |
b0d9ce38 GS |
1532 | POPSUB(cx,sv); |
1533 | LEAVESUB(sv); | |
a0d0e21e LW |
1534 | break; |
1535 | case CXt_EVAL: | |
1536 | POPEVAL(cx); | |
1537 | break; | |
c6fdafd0 | 1538 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1539 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1540 | case CXt_LOOP_FOR: |
1541 | case CXt_LOOP_PLAIN: | |
a0d0e21e LW |
1542 | POPLOOP(cx); |
1543 | break; | |
0a753a76 | 1544 | case CXt_NULL: |
a0d0e21e | 1545 | break; |
7766f137 GS |
1546 | case CXt_FORMAT: |
1547 | POPFORMAT(cx); | |
1548 | break; | |
a0d0e21e | 1549 | } |
c90c0ff4 | 1550 | cxstack_ix--; |
a0d0e21e | 1551 | } |
1b6737cc | 1552 | PERL_UNUSED_VAR(optype); |
a0d0e21e LW |
1553 | } |
1554 | ||
5a844595 GS |
1555 | void |
1556 | Perl_qerror(pTHX_ SV *err) | |
1557 | { | |
7918f24d NC |
1558 | PERL_ARGS_ASSERT_QERROR; |
1559 | ||
6b2fb389 DM |
1560 | if (PL_in_eval) { |
1561 | if (PL_in_eval & EVAL_KEEPERR) { | |
ecad31f0 BF |
1562 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1563 | SVfARG(err)); | |
6b2fb389 DM |
1564 | } |
1565 | else | |
1566 | sv_catsv(ERRSV, err); | |
1567 | } | |
5a844595 GS |
1568 | else if (PL_errors) |
1569 | sv_catsv(PL_errors, err); | |
1570 | else | |
be2597df | 1571 | Perl_warn(aTHX_ "%"SVf, SVfARG(err)); |
13765c85 DM |
1572 | if (PL_parser) |
1573 | ++PL_parser->error_count; | |
5a844595 GS |
1574 | } |
1575 | ||
bb4c52e0 | 1576 | void |
c5df3096 | 1577 | Perl_die_unwind(pTHX_ SV *msv) |
a0d0e21e | 1578 | { |
c5df3096 | 1579 | SV *exceptsv = sv_mortalcopy(msv); |
96d9b9cd | 1580 | U8 in_eval = PL_in_eval; |
c5df3096 | 1581 | PERL_ARGS_ASSERT_DIE_UNWIND; |
87582a92 | 1582 | |
96d9b9cd | 1583 | if (in_eval) { |
a0d0e21e | 1584 | I32 cxix; |
a0d0e21e | 1585 | I32 gimme; |
a0d0e21e | 1586 | |
22a30693 Z |
1587 | /* |
1588 | * Historically, perl used to set ERRSV ($@) early in the die | |
1589 | * process and rely on it not getting clobbered during unwinding. | |
1590 | * That sucked, because it was liable to get clobbered, so the | |
1591 | * setting of ERRSV used to emit the exception from eval{} has | |
1592 | * been moved to much later, after unwinding (see just before | |
1593 | * JMPENV_JUMP below). However, some modules were relying on the | |
1594 | * early setting, by examining $@ during unwinding to use it as | |
1595 | * a flag indicating whether the current unwinding was caused by | |
1596 | * an exception. It was never a reliable flag for that purpose, | |
1597 | * being totally open to false positives even without actual | |
1598 | * clobberage, but was useful enough for production code to | |
1599 | * semantically rely on it. | |
1600 | * | |
1601 | * We'd like to have a proper introspective interface that | |
1602 | * explicitly describes the reason for whatever unwinding | |
1603 | * operations are currently in progress, so that those modules | |
1604 | * work reliably and $@ isn't further overloaded. But we don't | |
1605 | * have one yet. In its absence, as a stopgap measure, ERRSV is | |
1606 | * now *additionally* set here, before unwinding, to serve as the | |
1607 | * (unreliable) flag that it used to. | |
1608 | * | |
1609 | * This behaviour is temporary, and should be removed when a | |
1610 | * proper way to detect exceptional unwinding has been developed. | |
1611 | * As of 2010-12, the authors of modules relying on the hack | |
1612 | * are aware of the issue, because the modules failed on | |
1613 | * perls 5.13.{1..7} which had late setting of $@ without this | |
1614 | * early-setting hack. | |
1615 | */ | |
1616 | if (!(in_eval & EVAL_KEEPERR)) { | |
1617 | SvTEMP_off(exceptsv); | |
1618 | sv_setsv(ERRSV, exceptsv); | |
1619 | } | |
1620 | ||
fc941f37 Z |
1621 | if (in_eval & EVAL_KEEPERR) { |
1622 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, | |
1623 | SVfARG(exceptsv)); | |
1624 | } | |
1625 | ||
5a844595 GS |
1626 | while ((cxix = dopoptoeval(cxstack_ix)) < 0 |
1627 | && PL_curstackinfo->si_prev) | |
1628 | { | |
bac4b2ad | 1629 | dounwind(-1); |
d3acc0f7 | 1630 | POPSTACK; |
bac4b2ad | 1631 | } |
e336de0d | 1632 | |
a0d0e21e LW |
1633 | if (cxix >= 0) { |
1634 | I32 optype; | |
b6494f15 | 1635 | SV *namesv; |
eb578fdb | 1636 | PERL_CONTEXT *cx; |
901017d6 | 1637 | SV **newsp; |
e32ff4e1 | 1638 | #ifdef DEBUGGING |
8f89e5a9 | 1639 | COP *oldcop; |
20189068 | 1640 | #endif |
8f89e5a9 Z |
1641 | JMPENV *restartjmpenv; |
1642 | OP *restartop; | |
a0d0e21e LW |
1643 | |
1644 | if (cxix < cxstack_ix) | |
1645 | dounwind(cxix); | |
1646 | ||
3280af22 | 1647 | POPBLOCK(cx,PL_curpm); |
6b35e009 | 1648 | if (CxTYPE(cx) != CXt_EVAL) { |
7d0994e0 | 1649 | STRLEN msglen; |
96d9b9cd | 1650 | const char* message = SvPVx_const(exceptsv, msglen); |
10edeb5d | 1651 | PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11); |
bf49b057 | 1652 | PerlIO_write(Perl_error_log, message, msglen); |
a0d0e21e LW |
1653 | my_exit(1); |
1654 | } | |
1655 | POPEVAL(cx); | |
b6494f15 | 1656 | namesv = cx->blk_eval.old_namesv; |
e32ff4e1 | 1657 | #ifdef DEBUGGING |
8f89e5a9 | 1658 | oldcop = cx->blk_oldcop; |
20189068 | 1659 | #endif |
8f89e5a9 Z |
1660 | restartjmpenv = cx->blk_eval.cur_top_env; |
1661 | restartop = cx->blk_eval.retop; | |
a0d0e21e LW |
1662 | |
1663 | if (gimme == G_SCALAR) | |
3280af22 NIS |
1664 | *++newsp = &PL_sv_undef; |
1665 | PL_stack_sp = newsp; | |
a0d0e21e LW |
1666 | |
1667 | LEAVE; | |
748a9306 | 1668 | |
7a2e2cd6 | 1669 | if (optype == OP_REQUIRE) { |
e32ff4e1 | 1670 | assert (PL_curcop == oldcop); |
b6494f15 | 1671 | (void)hv_store(GvHVn(PL_incgv), |
ecad31f0 | 1672 | SvPVX_const(namesv), |
c60dbbc3 | 1673 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
27bcc0a7 | 1674 | &PL_sv_undef, 0); |
27e90453 DM |
1675 | /* note that unlike pp_entereval, pp_require isn't |
1676 | * supposed to trap errors. So now that we've popped the | |
1677 | * EVAL that pp_require pushed, and processed the error | |
1678 | * message, rethrow the error */ | |
ecad31f0 BF |
1679 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
1680 | SVfARG(exceptsv ? exceptsv : newSVpvs_flags("Unknown error\n", | |
1681 | SVs_TEMP))); | |
7a2e2cd6 | 1682 | } |
fc941f37 | 1683 | if (!(in_eval & EVAL_KEEPERR)) |
96d9b9cd | 1684 | sv_setsv(ERRSV, exceptsv); |
8f89e5a9 Z |
1685 | PL_restartjmpenv = restartjmpenv; |
1686 | PL_restartop = restartop; | |
bb4c52e0 | 1687 | JMPENV_JUMP(3); |
e5964223 | 1688 | NOT_REACHED; /* NOTREACHED */ |
a0d0e21e LW |
1689 | } |
1690 | } | |
87582a92 | 1691 | |
96d9b9cd | 1692 | write_to_stderr(exceptsv); |
f86702cc | 1693 | my_failure_exit(); |
e5964223 | 1694 | NOT_REACHED; /* NOTREACHED */ |
a0d0e21e LW |
1695 | } |
1696 | ||
1697 | PP(pp_xor) | |
1698 | { | |
20b7effb | 1699 | dSP; dPOPTOPssrl; |
a0d0e21e LW |
1700 | if (SvTRUE(left) != SvTRUE(right)) |
1701 | RETSETYES; | |
1702 | else | |
1703 | RETSETNO; | |
1704 | } | |
1705 | ||
8dff4fc5 | 1706 | /* |
dcccc8ff KW |
1707 | |
1708 | =head1 CV Manipulation Functions | |
1709 | ||
8dff4fc5 BM |
1710 | =for apidoc caller_cx |
1711 | ||
72d33970 | 1712 | The XSUB-writer's equivalent of L<caller()|perlfunc/caller>. The |
8dff4fc5 | 1713 | returned C<PERL_CONTEXT> structure can be interrogated to find all the |
72d33970 | 1714 | information returned to Perl by C<caller>. Note that XSUBs don't get a |
8dff4fc5 BM |
1715 | stack frame, so C<caller_cx(0, NULL)> will return information for the |
1716 | immediately-surrounding Perl code. | |
1717 | ||
1718 | This function skips over the automatic calls to C<&DB::sub> made on the | |
72d33970 | 1719 | behalf of the debugger. If the stack frame requested was a sub called by |
8dff4fc5 BM |
1720 | C<DB::sub>, the return value will be the frame for the call to |
1721 | C<DB::sub>, since that has the correct line number/etc. for the call | |
72d33970 | 1722 | site. If I<dbcxp> is non-C<NULL>, it will be set to a pointer to the |
8dff4fc5 BM |
1723 | frame for the sub call itself. |
1724 | ||
1725 | =cut | |
1726 | */ | |
1727 | ||
1728 | const PERL_CONTEXT * | |
1729 | Perl_caller_cx(pTHX_ I32 count, const PERL_CONTEXT **dbcxp) | |
a0d0e21e | 1730 | { |
eb578fdb KW |
1731 | I32 cxix = dopoptosub(cxstack_ix); |
1732 | const PERL_CONTEXT *cx; | |
1733 | const PERL_CONTEXT *ccstack = cxstack; | |
901017d6 | 1734 | const PERL_SI *top_si = PL_curstackinfo; |
27d41816 | 1735 | |
a0d0e21e | 1736 | for (;;) { |
2c375eb9 GS |
1737 | /* we may be in a higher stacklevel, so dig down deeper */ |
1738 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { | |
1739 | top_si = top_si->si_prev; | |
1740 | ccstack = top_si->si_cxstack; | |
1741 | cxix = dopoptosub_at(ccstack, top_si->si_cxix); | |
1742 | } | |
8dff4fc5 BM |
1743 | if (cxix < 0) |
1744 | return NULL; | |
f2a7f298 DG |
1745 | /* caller() should not report the automatic calls to &DB::sub */ |
1746 | if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 && | |
3280af22 | 1747 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
a0d0e21e LW |
1748 | count++; |
1749 | if (!count--) | |
1750 | break; | |
2c375eb9 | 1751 | cxix = dopoptosub_at(ccstack, cxix - 1); |
a0d0e21e | 1752 | } |
2c375eb9 GS |
1753 | |
1754 | cx = &ccstack[cxix]; | |
8dff4fc5 BM |
1755 | if (dbcxp) *dbcxp = cx; |
1756 | ||
7766f137 | 1757 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
f54cb97a | 1758 | const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1); |
2c375eb9 | 1759 | /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the |
06a5b730 | 1760 | field below is defined for any cx. */ |
f2a7f298 DG |
1761 | /* caller() should not report the automatic calls to &DB::sub */ |
1762 | if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) | |
2c375eb9 | 1763 | cx = &ccstack[dbcxix]; |
06a5b730 | 1764 | } |
1765 | ||
8dff4fc5 BM |
1766 | return cx; |
1767 | } | |
1768 | ||
1769 | PP(pp_caller) | |
1770 | { | |
8dff4fc5 | 1771 | dSP; |
eb578fdb | 1772 | const PERL_CONTEXT *cx; |
8dff4fc5 | 1773 | const PERL_CONTEXT *dbcx; |
48ebc325 | 1774 | I32 gimme = GIMME_V; |
d527ce7c | 1775 | const HEK *stash_hek; |
8dff4fc5 | 1776 | I32 count = 0; |
ce0b554b | 1777 | bool has_arg = MAXARG && TOPs; |
25502127 | 1778 | const COP *lcop; |
8dff4fc5 | 1779 | |
ce0b554b FC |
1780 | if (MAXARG) { |
1781 | if (has_arg) | |
8dff4fc5 | 1782 | count = POPi; |
ce0b554b FC |
1783 | else (void)POPs; |
1784 | } | |
8dff4fc5 | 1785 | |
ce0b554b | 1786 | cx = caller_cx(count + !!(PL_op->op_private & OPpOFFBYONE), &dbcx); |
8dff4fc5 | 1787 | if (!cx) { |
48ebc325 | 1788 | if (gimme != G_ARRAY) { |
8dff4fc5 BM |
1789 | EXTEND(SP, 1); |
1790 | RETPUSHUNDEF; | |
1791 | } | |
1792 | RETURN; | |
1793 | } | |
1794 | ||
fb55feef | 1795 | DEBUG_CX("CALLER"); |
d0279c7c | 1796 | assert(CopSTASH(cx->blk_oldcop)); |
e7886211 FC |
1797 | stash_hek = SvTYPE(CopSTASH(cx->blk_oldcop)) == SVt_PVHV |
1798 | ? HvNAME_HEK((HV*)CopSTASH(cx->blk_oldcop)) | |
1799 | : NULL; | |
48ebc325 | 1800 | if (gimme != G_ARRAY) { |
27d41816 | 1801 | EXTEND(SP, 1); |
d527ce7c | 1802 | if (!stash_hek) |
3280af22 | 1803 | PUSHs(&PL_sv_undef); |
49d8d3a1 MB |
1804 | else { |
1805 | dTARGET; | |
d527ce7c | 1806 | sv_sethek(TARG, stash_hek); |
49d8d3a1 MB |
1807 | PUSHs(TARG); |
1808 | } | |
a0d0e21e LW |
1809 | RETURN; |
1810 | } | |
a0d0e21e | 1811 | |
b3ca2e83 | 1812 | EXTEND(SP, 11); |
27d41816 | 1813 | |
d527ce7c | 1814 | if (!stash_hek) |
3280af22 | 1815 | PUSHs(&PL_sv_undef); |
d527ce7c BF |
1816 | else { |
1817 | dTARGET; | |
1818 | sv_sethek(TARG, stash_hek); | |
1819 | PUSHTARG; | |
1820 | } | |
6e449a3a | 1821 | mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0)); |
e6dae479 | 1822 | lcop = closest_cop(cx->blk_oldcop, OpSIBLING(cx->blk_oldcop), |
25502127 FC |
1823 | cx->blk_sub.retop, TRUE); |
1824 | if (!lcop) | |
1825 | lcop = cx->blk_oldcop; | |
1826 | mPUSHi((I32)CopLINE(lcop)); | |
ce0b554b | 1827 | if (!has_arg) |
a0d0e21e | 1828 | RETURN; |
7766f137 GS |
1829 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
1830 | /* So is ccstack[dbcxix]. */ | |
a5f47741 | 1831 | if (CvHASGV(dbcx->blk_sub.cv)) { |
ecf05a58 | 1832 | PUSHs(cv_name(dbcx->blk_sub.cv, 0, 0)); |
bf38a478 | 1833 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 RGS |
1834 | } |
1835 | else { | |
84bafc02 | 1836 | PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP)); |
bf38a478 | 1837 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 | 1838 | } |
a0d0e21e LW |
1839 | } |
1840 | else { | |
84bafc02 | 1841 | PUSHs(newSVpvs_flags("(eval)", SVs_TEMP)); |
6e449a3a | 1842 | mPUSHi(0); |
a0d0e21e | 1843 | } |
54310121 | 1844 | gimme = (I32)cx->blk_gimme; |
1845 | if (gimme == G_VOID) | |
3280af22 | 1846 | PUSHs(&PL_sv_undef); |
54310121 | 1847 | else |
98625aca | 1848 | PUSHs(boolSV((gimme & G_WANT) == G_ARRAY)); |
6b35e009 | 1849 | if (CxTYPE(cx) == CXt_EVAL) { |
811a4de9 | 1850 | /* eval STRING */ |
85a64632 | 1851 | if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) { |
78beb4ca TC |
1852 | SV *cur_text = cx->blk_eval.cur_text; |
1853 | if (SvCUR(cur_text) >= 2) { | |
1854 | PUSHs(newSVpvn_flags(SvPVX(cur_text), SvCUR(cur_text)-2, | |
1855 | SvUTF8(cur_text)|SVs_TEMP)); | |
1856 | } | |
1857 | else { | |
1858 | /* I think this is will always be "", but be sure */ | |
1859 | PUSHs(sv_2mortal(newSVsv(cur_text))); | |
1860 | } | |
1861 | ||
3280af22 | 1862 | PUSHs(&PL_sv_no); |
0f79a09d | 1863 | } |
811a4de9 | 1864 | /* require */ |
0f79a09d | 1865 | else if (cx->blk_eval.old_namesv) { |
6e449a3a | 1866 | mPUSHs(newSVsv(cx->blk_eval.old_namesv)); |
3280af22 | 1867 | PUSHs(&PL_sv_yes); |
06a5b730 | 1868 | } |
811a4de9 GS |
1869 | /* eval BLOCK (try blocks have old_namesv == 0) */ |
1870 | else { | |
1871 | PUSHs(&PL_sv_undef); | |
1872 | PUSHs(&PL_sv_undef); | |
1873 | } | |
4633a7c4 | 1874 | } |
a682de96 GS |
1875 | else { |
1876 | PUSHs(&PL_sv_undef); | |
1877 | PUSHs(&PL_sv_undef); | |
1878 | } | |
bafb2adc | 1879 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx) |
ed094faf | 1880 | && CopSTASH_eq(PL_curcop, PL_debstash)) |
4633a7c4 | 1881 | { |
66a1b24b | 1882 | AV * const ary = cx->blk_sub.argarray; |
c70927a6 | 1883 | const SSize_t off = AvARRAY(ary) - AvALLOC(ary); |
a0d0e21e | 1884 | |
e1a80902 | 1885 | Perl_init_dbargs(aTHX); |
a0d0e21e | 1886 | |
3280af22 NIS |
1887 | if (AvMAX(PL_dbargs) < AvFILLp(ary) + off) |
1888 | av_extend(PL_dbargs, AvFILLp(ary) + off); | |
1889 | Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*); | |
1890 | AvFILLp(PL_dbargs) = AvFILLp(ary) + off; | |
a0d0e21e | 1891 | } |
6e449a3a | 1892 | mPUSHi(CopHINTS_get(cx->blk_oldcop)); |
e476b1b5 GS |
1893 | { |
1894 | SV * mask ; | |
72dc9ed5 | 1895 | STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ; |
114bafba | 1896 | |
f07626ad | 1897 | if (old_warnings == pWARN_NONE) |
e476b1b5 | 1898 | mask = newSVpvn(WARN_NONEstring, WARNsize) ; |
f07626ad FC |
1899 | else if (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0) |
1900 | mask = &PL_sv_undef ; | |
ac27b0f5 | 1901 | else if (old_warnings == pWARN_ALL || |
75b6c4ca RGS |
1902 | (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) { |
1903 | /* Get the bit mask for $warnings::Bits{all}, because | |
1904 | * it could have been extended by warnings::register */ | |
1905 | SV **bits_all; | |
6673a63c | 1906 | HV * const bits = get_hv("warnings::Bits", 0); |
017a3ce5 | 1907 | if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) { |
75b6c4ca RGS |
1908 | mask = newSVsv(*bits_all); |
1909 | } | |
1910 | else { | |
1911 | mask = newSVpvn(WARN_ALLstring, WARNsize) ; | |
1912 | } | |
1913 | } | |
e476b1b5 | 1914 | else |
72dc9ed5 | 1915 | mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]); |
6e449a3a | 1916 | mPUSHs(mask); |
e476b1b5 | 1917 | } |
b3ca2e83 | 1918 | |
c28fe1ec | 1919 | PUSHs(cx->blk_oldcop->cop_hints_hash ? |
20439bc7 | 1920 | sv_2mortal(newRV_noinc(MUTABLE_SV(cop_hints_2hv(cx->blk_oldcop, 0)))) |
b3ca2e83 | 1921 | : &PL_sv_undef); |
a0d0e21e LW |
1922 | RETURN; |
1923 | } | |
1924 | ||
a0d0e21e LW |
1925 | PP(pp_reset) |
1926 | { | |
39644a26 | 1927 | dSP; |
ca826051 FC |
1928 | const char * tmps; |
1929 | STRLEN len = 0; | |
1930 | if (MAXARG < 1 || (!TOPs && !POPs)) | |
1931 | tmps = NULL, len = 0; | |
1932 | else | |
1933 | tmps = SvPVx_const(POPs, len); | |
1934 | sv_resetpvn(tmps, len, CopSTASH(PL_curcop)); | |
3280af22 | 1935 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
1936 | RETURN; |
1937 | } | |
1938 | ||
dd2155a4 DM |
1939 | /* like pp_nextstate, but used instead when the debugger is active */ |
1940 | ||
a0d0e21e LW |
1941 | PP(pp_dbstate) |
1942 | { | |
533c011a | 1943 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 1944 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 1945 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
1946 | FREETMPS; |
1947 | ||
f410a211 NC |
1948 | PERL_ASYNC_CHECK(); |
1949 | ||
88df5f01 | 1950 | if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */ |
a6d69523 | 1951 | || PL_DBsingle_iv || PL_DBsignal_iv || PL_DBtrace_iv) |
a0d0e21e | 1952 | { |
39644a26 | 1953 | dSP; |
eb578fdb | 1954 | PERL_CONTEXT *cx; |
f54cb97a | 1955 | const I32 gimme = G_ARRAY; |
eb160463 | 1956 | U8 hasargs; |
0bd48802 | 1957 | GV * const gv = PL_DBgv; |
432d4561 JL |
1958 | CV * cv = NULL; |
1959 | ||
1960 | if (gv && isGV_with_GP(gv)) | |
1961 | cv = GvCV(gv); | |
a0d0e21e | 1962 | |
c2cb6f77 | 1963 | if (!cv || (!CvROOT(cv) && !CvXSUB(cv))) |
cea2e8a9 | 1964 | DIE(aTHX_ "No DB::DB routine defined"); |
a0d0e21e | 1965 | |
aea4f609 DM |
1966 | if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG)) |
1967 | /* don't do recursive DB::DB call */ | |
a0d0e21e | 1968 | return NORMAL; |
748a9306 | 1969 | |
a57c6685 | 1970 | ENTER; |
4633a7c4 LW |
1971 | SAVETMPS; |
1972 | ||
3280af22 | 1973 | SAVEI32(PL_debug); |
55497cff | 1974 | SAVESTACK_POS(); |
3280af22 | 1975 | PL_debug = 0; |
748a9306 | 1976 | hasargs = 0; |
924508f0 | 1977 | SPAGAIN; |
748a9306 | 1978 | |
aed2304a | 1979 | if (CvISXSUB(cv)) { |
c127bd3a SF |
1980 | PUSHMARK(SP); |
1981 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
c127bd3a | 1982 | FREETMPS; |
a57c6685 | 1983 | LEAVE; |
c127bd3a SF |
1984 | return NORMAL; |
1985 | } | |
1986 | else { | |
1987 | PUSHBLOCK(cx, CXt_SUB, SP); | |
1988 | PUSHSUB_DB(cx); | |
1989 | cx->blk_sub.retop = PL_op->op_next; | |
1990 | CvDEPTH(cv)++; | |
9d976ff5 FC |
1991 | if (CvDEPTH(cv) >= 2) { |
1992 | PERL_STACK_OVERFLOW_CHECK(); | |
1993 | pad_push(CvPADLIST(cv), CvDEPTH(cv)); | |
1994 | } | |
c127bd3a | 1995 | SAVECOMPPAD(); |
9d976ff5 | 1996 | PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv)); |
c127bd3a SF |
1997 | RETURNOP(CvSTART(cv)); |
1998 | } | |
a0d0e21e LW |
1999 | } |
2000 | else | |
2001 | return NORMAL; | |
2002 | } | |
2003 | ||
2fc507dc FC |
2004 | /* S_leave_common: Common code that many functions in this file use on |
2005 | scope exit. */ | |
2006 | ||
2ec7f6f2 FC |
2007 | /* SVs on the stack that have any of the flags passed in are left as is. |
2008 | Other SVs are protected via the mortals stack if lvalue is true, and | |
2fc507dc FC |
2009 | copied otherwise. |
2010 | ||
2011 | Also, taintedness is cleared. | |
2012 | */ | |
2ec7f6f2 | 2013 | |
b9d76716 | 2014 | STATIC SV ** |
2fc507dc | 2015 | S_leave_common(pTHX_ SV **newsp, SV **sp, SV **mark, I32 gimme, |
2ec7f6f2 | 2016 | U32 flags, bool lvalue) |
b9d76716 | 2017 | { |
9a214eec | 2018 | bool padtmp = 0; |
2fc507dc | 2019 | PERL_ARGS_ASSERT_LEAVE_COMMON; |
b9d76716 | 2020 | |
80dd201b | 2021 | TAINT_NOT; |
9a214eec DM |
2022 | if (flags & SVs_PADTMP) { |
2023 | flags &= ~SVs_PADTMP; | |
2024 | padtmp = 1; | |
2025 | } | |
b9d76716 VP |
2026 | if (gimme == G_SCALAR) { |
2027 | if (MARK < SP) | |
9a214eec | 2028 | *++newsp = ((SvFLAGS(*SP) & flags) || (padtmp && SvPADTMP(*SP))) |
2ec7f6f2 FC |
2029 | ? *SP |
2030 | : lvalue | |
2031 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) | |
2032 | : sv_mortalcopy(*SP); | |
b9d76716 VP |
2033 | else { |
2034 | /* MEXTEND() only updates MARK, so reuse it instead of newsp. */ | |
2035 | MARK = newsp; | |
2036 | MEXTEND(MARK, 1); | |
2037 | *++MARK = &PL_sv_undef; | |
2038 | return MARK; | |
2039 | } | |
2040 | } | |
2041 | else if (gimme == G_ARRAY) { | |
2042 | /* in case LEAVE wipes old return values */ | |
2043 | while (++MARK <= SP) { | |
9a214eec | 2044 | if ((SvFLAGS(*MARK) & flags) || (padtmp && SvPADTMP(*MARK))) |
b9d76716 VP |
2045 | *++newsp = *MARK; |
2046 | else { | |
2ec7f6f2 FC |
2047 | *++newsp = lvalue |
2048 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)) | |
2049 | : sv_mortalcopy(*MARK); | |
b9d76716 VP |
2050 | TAINT_NOT; /* Each item is independent */ |
2051 | } | |
2052 | } | |
2053 | /* When this function was called with MARK == newsp, we reach this | |
2054 | * point with SP == newsp. */ | |
2055 | } | |
2056 | ||
2057 | return newsp; | |
2058 | } | |
2059 | ||
2b9a6457 VP |
2060 | PP(pp_enter) |
2061 | { | |
20b7effb | 2062 | dSP; |
eb578fdb | 2063 | PERL_CONTEXT *cx; |
7c2d9d03 | 2064 | I32 gimme = GIMME_V; |
2b9a6457 VP |
2065 | |
2066 | ENTER_with_name("block"); | |
2067 | ||
2068 | SAVETMPS; | |
2069 | PUSHBLOCK(cx, CXt_BLOCK, SP); | |
2070 | ||
2071 | RETURN; | |
2072 | } | |
2073 | ||
2074 | PP(pp_leave) | |
2075 | { | |
20b7effb | 2076 | dSP; |
eb578fdb | 2077 | PERL_CONTEXT *cx; |
2b9a6457 VP |
2078 | SV **newsp; |
2079 | PMOP *newpm; | |
2080 | I32 gimme; | |
2081 | ||
2082 | if (PL_op->op_flags & OPf_SPECIAL) { | |
2083 | cx = &cxstack[cxstack_ix]; | |
2084 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ | |
2085 | } | |
2086 | ||
2087 | POPBLOCK(cx,newpm); | |
2088 | ||
2089 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); | |
2090 | ||
2fc507dc | 2091 | SP = leave_common(newsp, SP, newsp, gimme, SVs_PADTMP|SVs_TEMP, |
2ec7f6f2 | 2092 | PL_op->op_private & OPpLVALUE); |
2b9a6457 VP |
2093 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
2094 | ||
2095 | LEAVE_with_name("block"); | |
2096 | ||
2097 | RETURN; | |
2098 | } | |
2099 | ||
eaa9f768 JH |
2100 | static bool |
2101 | S_outside_integer(pTHX_ SV *sv) | |
2102 | { | |
2103 | if (SvOK(sv)) { | |
2104 | const NV nv = SvNV_nomg(sv); | |
415b66b2 JH |
2105 | if (Perl_isinfnan(nv)) |
2106 | return TRUE; | |
eaa9f768 JH |
2107 | #ifdef NV_PRESERVES_UV |
2108 | if (nv < (NV)IV_MIN || nv > (NV)IV_MAX) | |
2109 | return TRUE; | |
2110 | #else | |
2111 | if (nv <= (NV)IV_MIN) | |
2112 | return TRUE; | |
2113 | if ((nv > 0) && | |
2114 | ((nv > (NV)UV_MAX || | |
2115 | SvUV_nomg(sv) > (UV)IV_MAX))) | |
2116 | return TRUE; | |
2117 | #endif | |
2118 | } | |
2119 | return FALSE; | |
2120 | } | |
2121 | ||
a0d0e21e LW |
2122 | PP(pp_enteriter) |
2123 | { | |
20b7effb | 2124 | dSP; dMARK; |
eb578fdb | 2125 | PERL_CONTEXT *cx; |
f54cb97a | 2126 | const I32 gimme = GIMME_V; |
df530c37 | 2127 | void *itervar; /* location of the iteration variable */ |
840fe433 | 2128 | U8 cxtype = CXt_LOOP_FOR; |
a0d0e21e | 2129 | |
d343c3ef | 2130 | ENTER_with_name("loop1"); |
4633a7c4 LW |
2131 | SAVETMPS; |
2132 | ||
aafca525 DM |
2133 | if (PL_op->op_targ) { /* "my" variable */ |
2134 | if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */ | |
14f338dc DM |
2135 | SvPADSTALE_off(PAD_SVl(PL_op->op_targ)); |
2136 | SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ), | |
2137 | SVs_PADSTALE, SVs_PADSTALE); | |
2138 | } | |
09edbca0 | 2139 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); |
89e00a7c | 2140 | #ifdef USE_ITHREADS |
df530c37 | 2141 | itervar = PL_comppad; |
89e00a7c | 2142 | #else |
aafca525 | 2143 | itervar = &PAD_SVl(PL_op->op_targ); |
7766f137 | 2144 | #endif |
54b9620d | 2145 | } |
d39c26a6 | 2146 | else if (LIKELY(isGV(TOPs))) { /* symbol table variable */ |
159b6efe | 2147 | GV * const gv = MUTABLE_GV(POPs); |
f83b46a0 DM |
2148 | SV** svp = &GvSV(gv); |
2149 | save_pushptrptr(gv, SvREFCNT_inc(*svp), SAVEt_GVSV); | |
561b68a9 | 2150 | *svp = newSV(0); |
df530c37 | 2151 | itervar = (void *)gv; |
54b9620d | 2152 | } |
d39c26a6 FC |
2153 | else { |
2154 | SV * const sv = POPs; | |
2155 | assert(SvTYPE(sv) == SVt_PVMG); | |
2156 | assert(SvMAGIC(sv)); | |
2157 | assert(SvMAGIC(sv)->mg_type == PERL_MAGIC_lvref); | |
2158 | itervar = (void *)sv; | |
2159 | cxtype |= CXp_FOR_LVREF; | |
2160 | } | |
4633a7c4 | 2161 | |
0d863452 RH |
2162 | if (PL_op->op_private & OPpITER_DEF) |
2163 | cxtype |= CXp_FOR_DEF; | |
2164 | ||
d343c3ef | 2165 | ENTER_with_name("loop2"); |
a0d0e21e | 2166 | |
7766f137 | 2167 | PUSHBLOCK(cx, cxtype, SP); |
df530c37 | 2168 | PUSHLOOP_FOR(cx, itervar, MARK); |
533c011a | 2169 | if (PL_op->op_flags & OPf_STACKED) { |
d01136d6 BS |
2170 | SV *maybe_ary = POPs; |
2171 | if (SvTYPE(maybe_ary) != SVt_PVAV) { | |
89ea2908 | 2172 | dPOPss; |
d01136d6 | 2173 | SV * const right = maybe_ary; |
d39c26a6 FC |
2174 | if (UNLIKELY(cxtype & CXp_FOR_LVREF)) |
2175 | DIE(aTHX_ "Assigned value is not a reference"); | |
984a4bea RD |
2176 | SvGETMAGIC(sv); |
2177 | SvGETMAGIC(right); | |
4fe3f0fa | 2178 | if (RANGE_IS_NUMERIC(sv,right)) { |
d01136d6 | 2179 | cx->cx_type &= ~CXTYPEMASK; |
c6fdafd0 NC |
2180 | cx->cx_type |= CXt_LOOP_LAZYIV; |
2181 | /* Make sure that no-one re-orders cop.h and breaks our | |
2182 | assumptions */ | |
2183 | assert(CxTYPE(cx) == CXt_LOOP_LAZYIV); | |
eaa9f768 JH |
2184 | if (S_outside_integer(aTHX_ sv) || |
2185 | S_outside_integer(aTHX_ right)) | |
076d9a11 | 2186 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
2187 | cx->blk_loop.state_u.lazyiv.cur = SvIV_nomg(sv); |
2188 | cx->blk_loop.state_u.lazyiv.end = SvIV_nomg(right); | |
d4665a05 DM |
2189 | #ifdef DEBUGGING |
2190 | /* for correct -Dstv display */ | |
2191 | cx->blk_oldsp = sp - PL_stack_base; | |
2192 | #endif | |
89ea2908 | 2193 | } |
3f63a782 | 2194 | else { |
d01136d6 BS |
2195 | cx->cx_type &= ~CXTYPEMASK; |
2196 | cx->cx_type |= CXt_LOOP_LAZYSV; | |
2197 | /* Make sure that no-one re-orders cop.h and breaks our | |
2198 | assumptions */ | |
2199 | assert(CxTYPE(cx) == CXt_LOOP_LAZYSV); | |
2200 | cx->blk_loop.state_u.lazysv.cur = newSVsv(sv); | |
2201 | cx->blk_loop.state_u.lazysv.end = right; | |
2202 | SvREFCNT_inc(right); | |
2203 | (void) SvPV_force_nolen(cx->blk_loop.state_u.lazysv.cur); | |
267cc4a8 NC |
2204 | /* This will do the upgrade to SVt_PV, and warn if the value |
2205 | is uninitialised. */ | |
10516c54 | 2206 | (void) SvPV_nolen_const(right); |
267cc4a8 NC |
2207 | /* Doing this avoids a check every time in pp_iter in pp_hot.c |
2208 | to replace !SvOK() with a pointer to "". */ | |
2209 | if (!SvOK(right)) { | |
2210 | SvREFCNT_dec(right); | |
d01136d6 | 2211 | cx->blk_loop.state_u.lazysv.end = &PL_sv_no; |
267cc4a8 | 2212 | } |
3f63a782 | 2213 | } |
89ea2908 | 2214 | } |
d01136d6 | 2215 | else /* SvTYPE(maybe_ary) == SVt_PVAV */ { |
502c6561 | 2216 | cx->blk_loop.state_u.ary.ary = MUTABLE_AV(maybe_ary); |
d01136d6 BS |
2217 | SvREFCNT_inc(maybe_ary); |
2218 | cx->blk_loop.state_u.ary.ix = | |
2219 | (PL_op->op_private & OPpITER_REVERSED) ? | |
2220 | AvFILL(cx->blk_loop.state_u.ary.ary) + 1 : | |
2221 | -1; | |
ef3e5ea9 | 2222 | } |
89ea2908 | 2223 | } |
d01136d6 BS |
2224 | else { /* iterating over items on the stack */ |
2225 | cx->blk_loop.state_u.ary.ary = NULL; /* means to use the stack */ | |
ef3e5ea9 | 2226 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 | 2227 | cx->blk_loop.state_u.ary.ix = cx->blk_oldsp + 1; |
ef3e5ea9 NC |
2228 | } |
2229 | else { | |
d01136d6 | 2230 | cx->blk_loop.state_u.ary.ix = MARK - PL_stack_base; |
ef3e5ea9 | 2231 | } |
4633a7c4 | 2232 | } |
a0d0e21e LW |
2233 | |
2234 | RETURN; | |
2235 | } | |
2236 | ||
2237 | PP(pp_enterloop) | |
2238 | { | |
20b7effb | 2239 | dSP; |
eb578fdb | 2240 | PERL_CONTEXT *cx; |
f54cb97a | 2241 | const I32 gimme = GIMME_V; |
a0d0e21e | 2242 | |
d343c3ef | 2243 | ENTER_with_name("loop1"); |
a0d0e21e | 2244 | SAVETMPS; |
d343c3ef | 2245 | ENTER_with_name("loop2"); |
a0d0e21e | 2246 | |
3b719c58 NC |
2247 | PUSHBLOCK(cx, CXt_LOOP_PLAIN, SP); |
2248 | PUSHLOOP_PLAIN(cx, SP); | |
a0d0e21e LW |
2249 | |
2250 | RETURN; | |
2251 | } | |
2252 | ||
2253 | PP(pp_leaveloop) | |
2254 | { | |
20b7effb | 2255 | dSP; |
eb578fdb | 2256 | PERL_CONTEXT *cx; |
a0d0e21e LW |
2257 | I32 gimme; |
2258 | SV **newsp; | |
2259 | PMOP *newpm; | |
2260 | SV **mark; | |
2261 | ||
2262 | POPBLOCK(cx,newpm); | |
3b719c58 | 2263 | assert(CxTYPE_is_LOOP(cx)); |
4fdae800 | 2264 | mark = newsp; |
a8bba7fa | 2265 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
f86702cc | 2266 | |
2fc507dc | 2267 | SP = leave_common(newsp, SP, MARK, gimme, 0, |
a373464f | 2268 | PL_op->op_private & OPpLVALUE); |
f86702cc | 2269 | PUTBACK; |
2270 | ||
a8bba7fa | 2271 | POPLOOP(cx); /* Stack values are safe: release loop vars ... */ |
3280af22 | 2272 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2273 | |
d343c3ef GG |
2274 | LEAVE_with_name("loop2"); |
2275 | LEAVE_with_name("loop1"); | |
a0d0e21e | 2276 | |
f86702cc | 2277 | return NORMAL; |
a0d0e21e LW |
2278 | } |
2279 | ||
31ccb4f5 DM |
2280 | |
2281 | /* This duplicates most of pp_leavesub, but with additional code to handle | |
2282 | * return args in lvalue context. It was forked from pp_leavesub to | |
2283 | * avoid slowing down that function any further. | |
2284 | * | |
2285 | * Any changes made to this function may need to be copied to pp_leavesub | |
2286 | * and vice-versa. | |
57486a97 DM |
2287 | */ |
2288 | ||
31ccb4f5 | 2289 | PP(pp_leavesublv) |
3bdf583b | 2290 | { |
57486a97 DM |
2291 | dSP; |
2292 | SV **newsp; | |
2293 | SV **mark; | |
2294 | PMOP *newpm; | |
2295 | I32 gimme; | |
2296 | PERL_CONTEXT *cx; | |
2297 | SV *sv; | |
2298 | bool ref; | |
a8fc6464 | 2299 | const char *what = NULL; |
57486a97 | 2300 | |
1f0ba93b DM |
2301 | if (CxMULTICALL(&cxstack[cxstack_ix])) { |
2302 | /* entry zero of a stack is always PL_sv_undef, which | |
2303 | * simplifies converting a '()' return into undef in scalar context */ | |
2304 | assert(PL_stack_sp > PL_stack_base || *PL_stack_base == &PL_sv_undef); | |
85ecf147 | 2305 | return 0; |
1f0ba93b | 2306 | } |
85ecf147 | 2307 | |
57486a97 DM |
2308 | POPBLOCK(cx,newpm); |
2309 | cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */ | |
2310 | TAINT_NOT; | |
2311 | ||
e80c4acf | 2312 | mark = newsp + 1; |
57486a97 DM |
2313 | |
2314 | ref = !!(CxLVAL(cx) & OPpENTERSUB_INARGS); | |
3bdf583b | 2315 | if (gimme == G_SCALAR) { |
d25b0d7b FC |
2316 | if (CxLVAL(cx) && !ref) { /* Leave it as it is if we can. */ |
2317 | SV *sv; | |
e80c4acf DM |
2318 | if (MARK <= SP) { |
2319 | assert(MARK == SP); | |
3885a45a | 2320 | if ((SvPADTMP(TOPs) || SvREADONLY(TOPs)) && |
d25b0d7b | 2321 | !SvSMAGICAL(TOPs)) { |
001de122 | 2322 | what = |
d25b0d7b | 2323 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
001de122 | 2324 | : "a readonly value" : "a temporary"; |
d25b0d7b | 2325 | } |
001de122 | 2326 | else goto copy_sv; |
d25b0d7b FC |
2327 | } |
2328 | else { | |
2329 | /* sub:lvalue{} will take us here. */ | |
001de122 | 2330 | what = "undef"; |
d25b0d7b | 2331 | } |
a8fc6464 | 2332 | croak: |
001de122 | 2333 | LEAVE; |
001de122 | 2334 | POPSUB(cx,sv); |
716436dc | 2335 | cxstack_ix--; |
001de122 FC |
2336 | PL_curpm = newpm; |
2337 | LEAVESUB(sv); | |
2338 | Perl_croak(aTHX_ | |
2339 | "Can't return %s from lvalue subroutine", what | |
2340 | ); | |
d25b0d7b | 2341 | } |
e80c4acf | 2342 | if (MARK <= SP) { |
a5ad7a5a | 2343 | copy_sv: |
3bdf583b | 2344 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
5811c07e | 2345 | if (!SvPADTMP(*SP)) { |
e80c4acf | 2346 | *MARK = SvREFCNT_inc(*SP); |
3bdf583b | 2347 | FREETMPS; |
e80c4acf | 2348 | sv_2mortal(*MARK); |
5811c07e FC |
2349 | } |
2350 | else { | |
2351 | /* FREETMPS could clobber it */ | |
2352 | SV *sv = SvREFCNT_inc(*SP); | |
2353 | FREETMPS; | |
e80c4acf | 2354 | *MARK = sv_mortalcopy(sv); |
5811c07e FC |
2355 | SvREFCNT_dec(sv); |
2356 | } | |
3bdf583b FC |
2357 | } |
2358 | else | |
e80c4acf | 2359 | *MARK = |
5811c07e FC |
2360 | SvPADTMP(*SP) |
2361 | ? sv_mortalcopy(*SP) | |
2362 | : !SvTEMP(*SP) | |
e08be60b FC |
2363 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) |
2364 | : *SP; | |
3bdf583b | 2365 | } |
0d235c77 | 2366 | else { |
e80c4acf DM |
2367 | MEXTEND(MARK, 0); |
2368 | *MARK = &PL_sv_undef; | |
0d235c77 | 2369 | } |
e80c4acf DM |
2370 | SP = MARK; |
2371 | ||
0e9700df | 2372 | if (CxLVAL(cx) & OPpDEREF) { |
767eda44 FC |
2373 | SvGETMAGIC(TOPs); |
2374 | if (!SvOK(TOPs)) { | |
0e9700df | 2375 | TOPs = vivify_ref(TOPs, CxLVAL(cx) & OPpDEREF); |
767eda44 FC |
2376 | } |
2377 | } | |
3bdf583b FC |
2378 | } |
2379 | else if (gimme == G_ARRAY) { | |
0e9700df | 2380 | assert (!(CxLVAL(cx) & OPpDEREF)); |
80422e24 | 2381 | if (ref || !CxLVAL(cx)) |
e80c4acf DM |
2382 | for (; MARK <= SP; MARK++) |
2383 | *MARK = | |
5811c07e | 2384 | SvFLAGS(*MARK) & SVs_PADTMP |
80422e24 | 2385 | ? sv_mortalcopy(*MARK) |
5811c07e FC |
2386 | : SvTEMP(*MARK) |
2387 | ? *MARK | |
80422e24 | 2388 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); |
e80c4acf | 2389 | else for (; MARK <= SP; MARK++) { |
d25b0d7b | 2390 | if (*MARK != &PL_sv_undef |
3885a45a | 2391 | && (SvPADTMP(*MARK) || SvREADONLY(*MARK)) |
d25b0d7b | 2392 | ) { |
d25b0d7b | 2393 | /* Might be flattened array after $#array = */ |
a8fc6464 DM |
2394 | what = SvREADONLY(*MARK) |
2395 | ? "a readonly value" : "a temporary"; | |
2396 | goto croak; | |
d25b0d7b | 2397 | } |
e80c4acf DM |
2398 | else if (!SvTEMP(*MARK)) |
2399 | *MARK = sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
3bdf583b FC |
2400 | } |
2401 | } | |
e80c4acf | 2402 | PUTBACK; |
57486a97 DM |
2403 | |
2404 | LEAVE; | |
716436dc DM |
2405 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
2406 | cxstack_ix--; | |
57486a97 DM |
2407 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2408 | LEAVESUB(sv); | |
2409 | ||
2410 | return cx->blk_sub.retop; | |
3bdf583b FC |
2411 | } |
2412 | ||
57486a97 | 2413 | |
a0d0e21e LW |
2414 | PP(pp_return) |
2415 | { | |
20b7effb | 2416 | dSP; dMARK; |
eb578fdb | 2417 | PERL_CONTEXT *cx; |
617a4f41 | 2418 | SV **oldsp; |
0bd48802 AL |
2419 | const I32 cxix = dopoptosub(cxstack_ix); |
2420 | ||
d40dc6b1 DM |
2421 | assert(cxstack_ix >= 0); |
2422 | if (cxix < cxstack_ix) { | |
2423 | if (cxix < 0) { | |
2424 | if (CxMULTICALL(cxstack)) { /* In this case we must be in a | |
2425 | * sort block, which is a CXt_NULL | |
2426 | * not a CXt_SUB */ | |
2427 | dounwind(0); | |
2428 | /* if we were in list context, we would have to splice out | |
2429 | * any junk before the return args, like we do in the general | |
2430 | * pp_return case, e.g. | |
2431 | * sub f { for (junk1, junk2) { return arg1, arg2 }} | |
2432 | */ | |
2433 | assert(cxstack[0].blk_gimme == G_SCALAR); | |
2434 | return 0; | |
2435 | } | |
2436 | else | |
2437 | DIE(aTHX_ "Can't return outside a subroutine"); | |
2438 | } | |
a0d0e21e | 2439 | dounwind(cxix); |
d40dc6b1 | 2440 | } |
a0d0e21e | 2441 | |
6228a1e1 | 2442 | cx = &cxstack[cxix]; |
9850bf21 | 2443 | |
a375ceca DM |
2444 | oldsp = PL_stack_base + cx->blk_oldsp; |
2445 | if (oldsp != MARK) { | |
2446 | /* Handle extra junk on the stack. For example, | |
2447 | * for (1,2) { return 3,4 } | |
2448 | * leaves 1,2,3,4 on the stack. In list context we | |
2449 | * have to splice out the 1,2; In scalar context for | |
2450 | * for (1,2) { return } | |
2451 | * we need to set sp = oldsp so that pp_leavesub knows | |
2452 | * to push &PL_sv_undef onto the stack. | |
2453 | * Note that in pp_return we only do the extra processing | |
2454 | * required to handle junk; everything else we leave to | |
2455 | * pp_leavesub. | |
2456 | */ | |
2457 | SSize_t nargs = SP - MARK; | |
2458 | if (nargs) { | |
2459 | if (cx->blk_gimme == G_ARRAY) { | |
2460 | /* shift return args to base of call stack frame */ | |
48344877 | 2461 | Move(MARK + 1, oldsp + 1, nargs, SV*); |
a375ceca | 2462 | PL_stack_sp = oldsp + nargs; |
6228a1e1 | 2463 | } |
13929c4c | 2464 | } |
a375ceca DM |
2465 | else |
2466 | PL_stack_sp = oldsp; | |
2467 | } | |
617a4f41 DM |
2468 | |
2469 | /* fall through to a normal exit */ | |
2470 | switch (CxTYPE(cx)) { | |
2471 | case CXt_EVAL: | |
2472 | return CxTRYBLOCK(cx) | |
2473 | ? Perl_pp_leavetry(aTHX) | |
2474 | : Perl_pp_leaveeval(aTHX); | |
2475 | case CXt_SUB: | |
13929c4c | 2476 | return CvLVALUE(cx->blk_sub.cv) |
31ccb4f5 | 2477 | ? Perl_pp_leavesublv(aTHX) |
13929c4c | 2478 | : Perl_pp_leavesub(aTHX); |
7766f137 | 2479 | case CXt_FORMAT: |
617a4f41 | 2480 | return Perl_pp_leavewrite(aTHX); |
a0d0e21e | 2481 | default: |
5637ef5b | 2482 | DIE(aTHX_ "panic: return, type=%u", (unsigned) CxTYPE(cx)); |
a0d0e21e | 2483 | } |
a0d0e21e LW |
2484 | } |
2485 | ||
4f443c3d | 2486 | |
1f039d60 FC |
2487 | static I32 |
2488 | S_unwind_loop(pTHX_ const char * const opname) | |
a0d0e21e | 2489 | { |
a0d0e21e | 2490 | I32 cxix; |
1f039d60 FC |
2491 | if (PL_op->op_flags & OPf_SPECIAL) { |
2492 | cxix = dopoptoloop(cxstack_ix); | |
2493 | if (cxix < 0) | |
2494 | /* diag_listed_as: Can't "last" outside a loop block */ | |
2495 | Perl_croak(aTHX_ "Can't \"%s\" outside a loop block", opname); | |
2496 | } | |
2497 | else { | |
2498 | dSP; | |
2499 | STRLEN label_len; | |
2500 | const char * const label = | |
2501 | PL_op->op_flags & OPf_STACKED | |
2502 | ? SvPV(TOPs,label_len) | |
2503 | : (label_len = strlen(cPVOP->op_pv), cPVOP->op_pv); | |
2504 | const U32 label_flags = | |
2505 | PL_op->op_flags & OPf_STACKED | |
2506 | ? SvUTF8(POPs) | |
2507 | : (cPVOP->op_private & OPpPV_IS_UTF8) ? SVf_UTF8 : 0; | |
2508 | PUTBACK; | |
2509 | cxix = dopoptolabel(label, label_len, label_flags); | |
2510 | if (cxix < 0) | |
2511 | /* diag_listed_as: Label not found for "last %s" */ | |
2512 | Perl_croak(aTHX_ "Label not found for \"%s %"SVf"\"", | |
2513 | opname, | |
2514 | SVfARG(PL_op->op_flags & OPf_STACKED | |
2515 | && !SvGMAGICAL(TOPp1s) | |
2516 | ? TOPp1s | |
2517 | : newSVpvn_flags(label, | |
2518 | label_len, | |
2519 | label_flags | SVs_TEMP))); | |
2520 | } | |
2521 | if (cxix < cxstack_ix) | |
2522 | dounwind(cxix); | |
2523 | return cxix; | |
2524 | } | |
2525 | ||
2526 | PP(pp_last) | |
2527 | { | |
eb578fdb | 2528 | PERL_CONTEXT *cx; |
a0d0e21e | 2529 | I32 gimme; |
b263a1ad | 2530 | OP *nextop = NULL; |
a0d0e21e LW |
2531 | SV **newsp; |
2532 | PMOP *newpm; | |
9d4ba2ae | 2533 | |
1f039d60 | 2534 | S_unwind_loop(aTHX_ "last"); |
a0d0e21e LW |
2535 | |
2536 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2537 | cxstack_ix++; /* temporarily protect top context */ |
d3e5e568 DM |
2538 | assert( |
2539 | CxTYPE(cx) == CXt_LOOP_LAZYIV | |
2540 | || CxTYPE(cx) == CXt_LOOP_LAZYSV | |
2541 | || CxTYPE(cx) == CXt_LOOP_FOR | |
2542 | || CxTYPE(cx) == CXt_LOOP_PLAIN | |
2543 | ); | |
2544 | newsp = PL_stack_base + cx->blk_loop.resetsp; | |
2545 | nextop = cx->blk_loop.my_op->op_lastop->op_next; | |
a0d0e21e | 2546 | |
a1f49e72 | 2547 | TAINT_NOT; |
0c0c317c | 2548 | PL_stack_sp = newsp; |
f86702cc | 2549 | |
5dd42e15 DM |
2550 | LEAVE; |
2551 | cxstack_ix--; | |
f86702cc | 2552 | /* Stack values are safe: */ |
d3e5e568 DM |
2553 | POPLOOP(cx); /* release loop vars ... */ |
2554 | LEAVE; | |
3280af22 | 2555 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2556 | |
9d4ba2ae | 2557 | PERL_UNUSED_VAR(gimme); |
f86702cc | 2558 | return nextop; |
a0d0e21e LW |
2559 | } |
2560 | ||
2561 | PP(pp_next) | |
2562 | { | |
eb578fdb | 2563 | PERL_CONTEXT *cx; |
1f039d60 | 2564 | const I32 inner = PL_scopestack_ix; |
a0d0e21e | 2565 | |
1f039d60 | 2566 | S_unwind_loop(aTHX_ "next"); |
a0d0e21e | 2567 | |
85538317 GS |
2568 | /* clear off anything above the scope we're re-entering, but |
2569 | * save the rest until after a possible continue block */ | |
1ba6ee2b | 2570 | TOPBLOCK(cx); |
85538317 GS |
2571 | if (PL_scopestack_ix < inner) |
2572 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
3a1b2b9e | 2573 | PL_curcop = cx->blk_oldcop; |
47c9d59f | 2574 | PERL_ASYNC_CHECK(); |
d57ce4df | 2575 | return (cx)->blk_loop.my_op->op_nextop; |
a0d0e21e LW |
2576 | } |
2577 | ||
2578 | PP(pp_redo) | |
2579 | { | |
1f039d60 | 2580 | const I32 cxix = S_unwind_loop(aTHX_ "redo"); |
eb578fdb | 2581 | PERL_CONTEXT *cx; |
a0d0e21e | 2582 | I32 oldsave; |
1f039d60 | 2583 | OP* redo_op = cxstack[cxix].blk_loop.my_op->op_redoop; |
a0d0e21e | 2584 | |
a034e688 DM |
2585 | if (redo_op->op_type == OP_ENTER) { |
2586 | /* pop one less context to avoid $x being freed in while (my $x..) */ | |
2587 | cxstack_ix++; | |
2588 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK); | |
2589 | redo_op = redo_op->op_next; | |
2590 | } | |
2591 | ||
a0d0e21e | 2592 | TOPBLOCK(cx); |
3280af22 | 2593 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e | 2594 | LEAVE_SCOPE(oldsave); |
936c78b5 | 2595 | FREETMPS; |
3a1b2b9e | 2596 | PL_curcop = cx->blk_oldcop; |
47c9d59f | 2597 | PERL_ASYNC_CHECK(); |
a034e688 | 2598 | return redo_op; |
a0d0e21e LW |
2599 | } |
2600 | ||
0824fdcb | 2601 | STATIC OP * |
5db1eb8d | 2602 | S_dofindlabel(pTHX_ OP *o, const char *label, STRLEN len, U32 flags, OP **opstack, OP **oplimit) |
a0d0e21e | 2603 | { |
a0d0e21e | 2604 | OP **ops = opstack; |
a1894d81 | 2605 | static const char* const too_deep = "Target of goto is too deeply nested"; |
a0d0e21e | 2606 | |
7918f24d NC |
2607 | PERL_ARGS_ASSERT_DOFINDLABEL; |
2608 | ||
fc36a67e | 2609 | if (ops >= oplimit) |
0157ef98 | 2610 | Perl_croak(aTHX_ "%s", too_deep); |
11343788 MB |
2611 | if (o->op_type == OP_LEAVE || |
2612 | o->op_type == OP_SCOPE || | |
2613 | o->op_type == OP_LEAVELOOP || | |
33d34e4c | 2614 | o->op_type == OP_LEAVESUB || |
11343788 | 2615 | o->op_type == OP_LEAVETRY) |
fc36a67e | 2616 | { |
5dc0d613 | 2617 | *ops++ = cUNOPo->op_first; |
fc36a67e | 2618 | if (ops >= oplimit) |
0157ef98 | 2619 | Perl_croak(aTHX_ "%s", too_deep); |
fc36a67e | 2620 | } |
c4aa4e48 | 2621 | *ops = 0; |
11343788 | 2622 | if (o->op_flags & OPf_KIDS) { |
aec46f14 | 2623 | OP *kid; |
a0d0e21e | 2624 | /* First try all the kids at this level, since that's likeliest. */ |
e6dae479 | 2625 | for (kid = cUNOPo->op_first; kid; kid = OpSIBLING(kid)) { |
7e8f1eac | 2626 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
5db1eb8d BF |
2627 | STRLEN kid_label_len; |
2628 | U32 kid_label_flags; | |
2629 | const char *kid_label = CopLABEL_len_flags(kCOP, | |
2630 | &kid_label_len, &kid_label_flags); | |
2631 | if (kid_label && ( | |
2632 | ( (kid_label_flags & SVf_UTF8) != (flags & SVf_UTF8) ) ? | |
2633 | (flags & SVf_UTF8) | |
2634 | ? (bytes_cmp_utf8( | |
2635 | (const U8*)kid_label, kid_label_len, | |
2636 | (const U8*)label, len) == 0) | |
2637 | : (bytes_cmp_utf8( | |
2638 | (const U8*)label, len, | |
2639 | (const U8*)kid_label, kid_label_len) == 0) | |
eade7155 BF |
2640 | : ( len == kid_label_len && ((kid_label == label) |
2641 | || memEQ(kid_label, label, len))))) | |
7e8f1eac AD |
2642 | return kid; |
2643 | } | |
a0d0e21e | 2644 | } |
e6dae479 | 2645 | for (kid = cUNOPo->op_first; kid; kid = OpSIBLING(kid)) { |
3280af22 | 2646 | if (kid == PL_lastgotoprobe) |
a0d0e21e | 2647 | continue; |
ed8d0fe2 SM |
2648 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2649 | if (ops == opstack) | |
2650 | *ops++ = kid; | |
2651 | else if (ops[-1]->op_type == OP_NEXTSTATE || | |
2652 | ops[-1]->op_type == OP_DBSTATE) | |
2653 | ops[-1] = kid; | |
2654 | else | |
2655 | *ops++ = kid; | |
2656 | } | |
5db1eb8d | 2657 | if ((o = dofindlabel(kid, label, len, flags, ops, oplimit))) |
11343788 | 2658 | return o; |
a0d0e21e LW |
2659 | } |
2660 | } | |
c4aa4e48 | 2661 | *ops = 0; |
a0d0e21e LW |
2662 | return 0; |
2663 | } | |
2664 | ||
b1c05ba5 DM |
2665 | |
2666 | /* also used for: pp_dump() */ | |
2667 | ||
2668 | PP(pp_goto) | |
a0d0e21e | 2669 | { |
27da23d5 | 2670 | dVAR; dSP; |
cbbf8932 | 2671 | OP *retop = NULL; |
a0d0e21e | 2672 | I32 ix; |
eb578fdb | 2673 | PERL_CONTEXT *cx; |
fc36a67e | 2674 | #define GOTO_DEPTH 64 |
2675 | OP *enterops[GOTO_DEPTH]; | |
cbbf8932 | 2676 | const char *label = NULL; |
5db1eb8d BF |
2677 | STRLEN label_len = 0; |
2678 | U32 label_flags = 0; | |
bfed75c6 | 2679 | const bool do_dump = (PL_op->op_type == OP_DUMP); |
a1894d81 | 2680 | static const char* const must_have_label = "goto must have label"; |
a0d0e21e | 2681 | |
533c011a | 2682 | if (PL_op->op_flags & OPf_STACKED) { |
7d1d69cb DM |
2683 | /* goto EXPR or goto &foo */ |
2684 | ||
9d4ba2ae | 2685 | SV * const sv = POPs; |
55b37f1c | 2686 | SvGETMAGIC(sv); |
a0d0e21e LW |
2687 | |
2688 | /* This egregious kludge implements goto &subroutine */ | |
2689 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) { | |
2690 | I32 cxix; | |
eb578fdb | 2691 | PERL_CONTEXT *cx; |
ea726b52 | 2692 | CV *cv = MUTABLE_CV(SvRV(sv)); |
049bd5ff | 2693 | AV *arg = GvAV(PL_defgv); |
a0d0e21e LW |
2694 | I32 oldsave; |
2695 | ||
e8f7dd13 | 2696 | retry: |
4aa0a1f7 | 2697 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
7fc63493 | 2698 | const GV * const gv = CvGV(cv); |
e8f7dd13 | 2699 | if (gv) { |
7fc63493 | 2700 | GV *autogv; |
e8f7dd13 GS |
2701 | SV *tmpstr; |
2702 | /* autoloaded stub? */ | |
2703 | if (cv != GvCV(gv) && (cv = GvCV(gv))) | |
2704 | goto retry; | |
c271df94 BF |
2705 | autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), |
2706 | GvNAMELEN(gv), | |
2707 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0); | |
e8f7dd13 GS |
2708 | if (autogv && (cv = GvCV(autogv))) |
2709 | goto retry; | |
2710 | tmpstr = sv_newmortal(); | |
c445ea15 | 2711 | gv_efullname3(tmpstr, gv, NULL); |
be2597df | 2712 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr)); |
4aa0a1f7 | 2713 | } |
cea2e8a9 | 2714 | DIE(aTHX_ "Goto undefined subroutine"); |
4aa0a1f7 AD |
2715 | } |
2716 | ||
a0d0e21e | 2717 | /* First do some returnish stuff. */ |
b37c2d43 | 2718 | SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */ |
71fc2216 | 2719 | FREETMPS; |
a0d0e21e | 2720 | cxix = dopoptosub(cxstack_ix); |
8da3792e S |
2721 | if (cxix < cxstack_ix) { |
2722 | if (cxix < 0) { | |
2723 | SvREFCNT_dec(cv); | |
2724 | DIE(aTHX_ "Can't goto subroutine outside a subroutine"); | |
2725 | } | |
a0d0e21e | 2726 | dounwind(cxix); |
8da3792e | 2727 | } |
a0d0e21e | 2728 | TOPBLOCK(cx); |
2d43a17f | 2729 | SPAGAIN; |
564abe23 | 2730 | /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */ |
2d43a17f | 2731 | if (CxTYPE(cx) == CXt_EVAL) { |
110af908 | 2732 | SvREFCNT_dec(cv); |
c74ace89 | 2733 | if (CxREALEVAL(cx)) |
00455a92 | 2734 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 DM |
2735 | DIE(aTHX_ "Can't goto subroutine from an eval-string"); |
2736 | else | |
00455a92 | 2737 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 | 2738 | DIE(aTHX_ "Can't goto subroutine from an eval-block"); |
2d43a17f | 2739 | } |
9850bf21 | 2740 | else if (CxMULTICALL(cx)) |
110af908 FC |
2741 | { |
2742 | SvREFCNT_dec(cv); | |
9850bf21 | 2743 | DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)"); |
110af908 | 2744 | } |
bafb2adc | 2745 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { |
a0d0e21e | 2746 | AV* av = cx->blk_sub.argarray; |
bfed75c6 | 2747 | |
049bd5ff FC |
2748 | /* abandon the original @_ if it got reified or if it is |
2749 | the same as the current @_ */ | |
2750 | if (AvREAL(av) || av == arg) { | |
b1464ded | 2751 | SvREFCNT_dec(av); |
d8b46c1b | 2752 | av = newAV(); |
11ca45c0 | 2753 | AvREIFY_only(av); |
ad64d0ec | 2754 | PAD_SVl(0) = MUTABLE_SV(cx->blk_sub.argarray = av); |
62b1ebc2 | 2755 | } |
049bd5ff | 2756 | else CLEAR_ARGARRAY(av); |
a0d0e21e | 2757 | } |
049bd5ff FC |
2758 | /* We donate this refcount later to the callee’s pad. */ |
2759 | SvREFCNT_inc_simple_void(arg); | |
6b35e009 | 2760 | if (CxTYPE(cx) == CXt_SUB && |
b150fb22 | 2761 | !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) |
a0d0e21e | 2762 | SvREFCNT_dec(cx->blk_sub.cv); |
3280af22 | 2763 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
2764 | LEAVE_SCOPE(oldsave); |
2765 | ||
1d59c038 FC |
2766 | /* A destructor called during LEAVE_SCOPE could have undefined |
2767 | * our precious cv. See bug #99850. */ | |
2768 | if (!CvROOT(cv) && !CvXSUB(cv)) { | |
2769 | const GV * const gv = CvGV(cv); | |
049bd5ff | 2770 | SvREFCNT_dec(arg); |
1d59c038 FC |
2771 | if (gv) { |
2772 | SV * const tmpstr = sv_newmortal(); | |
2773 | gv_efullname3(tmpstr, gv, NULL); | |
2774 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", | |
2775 | SVfARG(tmpstr)); | |
2776 | } | |
2777 | DIE(aTHX_ "Goto undefined subroutine"); | |
2778 | } | |
2779 | ||
a0d0e21e LW |
2780 | /* Now do some callish stuff. */ |
2781 | SAVETMPS; | |
5023d17a | 2782 | SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */ |
aed2304a | 2783 | if (CvISXSUB(cv)) { |
cb65b687 DM |
2784 | SV **newsp; |
2785 | I32 gimme; | |
ad39f3a2 | 2786 | const SSize_t items = arg ? AvFILL(arg) + 1 : 0; |
cd313eb4 | 2787 | const bool m = arg ? cBOOL(SvRMAGICAL(arg)) : 0; |
049bd5ff FC |
2788 | SV** mark; |
2789 | ||
cb65b687 DM |
2790 | PERL_UNUSED_VAR(newsp); |
2791 | PERL_UNUSED_VAR(gimme); | |
2792 | ||
049bd5ff | 2793 | /* put GvAV(defgv) back onto stack */ |
8c9d3376 FC |
2794 | if (items) { |
2795 | EXTEND(SP, items+1); /* @_ could have been extended. */ | |
8c9d3376 | 2796 | } |
049bd5ff | 2797 | mark = SP; |
ad39f3a2 | 2798 | if (items) { |
de935cc9 | 2799 | SSize_t index; |
ad39f3a2 | 2800 | bool r = cBOOL(AvREAL(arg)); |
b1464ded | 2801 | for (index=0; index<items; index++) |
ad39f3a2 FC |
2802 | { |
2803 | SV *sv; | |
2804 | if (m) { | |
2805 | SV ** const svp = av_fetch(arg, index, 0); | |
2806 | sv = svp ? *svp : NULL; | |
dd2a7f90 | 2807 | } |
ad39f3a2 FC |
2808 | else sv = AvARRAY(arg)[index]; |
2809 | SP[index+1] = sv | |
2810 | ? r ? SvREFCNT_inc_NN(sv_2mortal(sv)) : sv | |
2811 | : sv_2mortal(newSVavdefelem(arg, index, 1)); | |
2812 | } | |
049bd5ff | 2813 | } |
ad39f3a2 | 2814 | SP += items; |
049bd5ff FC |
2815 | SvREFCNT_dec(arg); |
2816 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { | |
2817 | /* Restore old @_ */ | |
2818 | arg = GvAV(PL_defgv); | |
2819 | GvAV(PL_defgv) = cx->blk_sub.savearray; | |
2820 | SvREFCNT_dec(arg); | |
b1464ded | 2821 | } |
1fa4e549 | 2822 | |
51eb35b5 | 2823 | retop = cx->blk_sub.retop; |
b37c2d43 AL |
2824 | /* XS subs don't have a CxSUB, so pop it */ |
2825 | POPBLOCK(cx, PL_curpm); | |
2826 | /* Push a mark for the start of arglist */ | |
2827 | PUSHMARK(mark); | |
2828 | PUTBACK; | |
2829 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
a57c6685 | 2830 | LEAVE; |
51eb35b5 | 2831 | goto _return; |
a0d0e21e LW |
2832 | } |
2833 | else { | |
b70d5558 | 2834 | PADLIST * const padlist = CvPADLIST(cv); |
a0d0e21e | 2835 | cx->blk_sub.cv = cv; |
1a5b3db4 | 2836 | cx->blk_sub.olddepth = CvDEPTH(cv); |
dd2155a4 | 2837 | |
a0d0e21e LW |
2838 | CvDEPTH(cv)++; |
2839 | if (CvDEPTH(cv) < 2) | |
74c765eb | 2840 | SvREFCNT_inc_simple_void_NN(cv); |
dd2155a4 | 2841 | else { |
2b9dff67 | 2842 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION)) |
44a8e56a | 2843 | sub_crush_depth(cv); |
26019298 | 2844 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2845 | } |
426a09cd | 2846 | PL_curcop = cx->blk_oldcop; |
fd617465 DM |
2847 | SAVECOMPPAD(); |
2848 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
bafb2adc | 2849 | if (CxHASARGS(cx)) |
6d4ff0d2 | 2850 | { |
dd2155a4 | 2851 | CX_CURPAD_SAVE(cx->blk_sub); |
a0d0e21e | 2852 | |
049bd5ff FC |
2853 | /* cx->blk_sub.argarray has no reference count, so we |
2854 | need something to hang on to our argument array so | |
2855 | that cx->blk_sub.argarray does not end up pointing | |
2856 | to freed memory as the result of undef *_. So put | |
2857 | it in the callee’s pad, donating our refer- | |
2858 | ence count. */ | |
bfa371b6 FC |
2859 | if (arg) { |
2860 | SvREFCNT_dec(PAD_SVl(0)); | |
2861 | PAD_SVl(0) = (SV *)(cx->blk_sub.argarray = arg); | |
2862 | } | |
049bd5ff FC |
2863 | |
2864 | /* GvAV(PL_defgv) might have been modified on scope | |
2865 | exit, so restore it. */ | |
2866 | if (arg != GvAV(PL_defgv)) { | |
2867 | AV * const av = GvAV(PL_defgv); | |
2868 | GvAV(PL_defgv) = (AV *)SvREFCNT_inc_simple(arg); | |
2869 | SvREFCNT_dec(av); | |
a0d0e21e LW |
2870 | } |
2871 | } | |
049bd5ff | 2872 | else SvREFCNT_dec(arg); |
491527d0 | 2873 | if (PERLDB_SUB) { /* Checking curstash breaks DProf. */ |
005a8a35 | 2874 | Perl_get_db_sub(aTHX_ NULL, cv); |
b37c2d43 | 2875 | if (PERLDB_GOTO) { |
b96d8cd9 | 2876 | CV * const gotocv = get_cvs("DB::goto", 0); |
b37c2d43 AL |
2877 | if (gotocv) { |
2878 | PUSHMARK( PL_stack_sp ); | |
ad64d0ec | 2879 | call_sv(MUTABLE_SV(gotocv), G_SCALAR | G_NODEBUG); |
b37c2d43 AL |
2880 | PL_stack_sp--; |
2881 | } | |
491527d0 | 2882 | } |
1ce6579f | 2883 | } |
51eb35b5 DD |
2884 | retop = CvSTART(cv); |
2885 | goto putback_return; | |
a0d0e21e LW |
2886 | } |
2887 | } | |
1614b0e3 | 2888 | else { |
7d1d69cb | 2889 | /* goto EXPR */ |
55b37f1c | 2890 | label = SvPV_nomg_const(sv, label_len); |
5db1eb8d | 2891 | label_flags = SvUTF8(sv); |
1614b0e3 | 2892 | } |
a0d0e21e | 2893 | } |
2fc690dc | 2894 | else if (!(PL_op->op_flags & OPf_SPECIAL)) { |
7d1d69cb | 2895 | /* goto LABEL or dump LABEL */ |
5db1eb8d BF |
2896 | label = cPVOP->op_pv; |
2897 | label_flags = (cPVOP->op_private & OPpPV_IS_UTF8) ? SVf_UTF8 : 0; | |
2898 | label_len = strlen(label); | |
2899 | } | |
0157ef98 | 2900 | if (!(do_dump || label_len)) DIE(aTHX_ "%s", must_have_label); |
a0d0e21e | 2901 | |
f410a211 NC |
2902 | PERL_ASYNC_CHECK(); |
2903 | ||
3532f34a | 2904 | if (label_len) { |
cbbf8932 | 2905 | OP *gotoprobe = NULL; |
3b2447bc | 2906 | bool leaving_eval = FALSE; |
33d34e4c | 2907 | bool in_block = FALSE; |
cbbf8932 | 2908 | PERL_CONTEXT *last_eval_cx = NULL; |
a0d0e21e LW |
2909 | |
2910 | /* find label */ | |
2911 | ||
d4c19fe8 | 2912 | PL_lastgotoprobe = NULL; |
a0d0e21e LW |
2913 | *enterops = 0; |
2914 | for (ix = cxstack_ix; ix >= 0; ix--) { | |
2915 | cx = &cxstack[ix]; | |
6b35e009 | 2916 | switch (CxTYPE(cx)) { |
a0d0e21e | 2917 | case CXt_EVAL: |
3b2447bc | 2918 | leaving_eval = TRUE; |
971ecbe6 | 2919 | if (!CxTRYBLOCK(cx)) { |
a4f3a277 RH |
2920 | gotoprobe = (last_eval_cx ? |
2921 | last_eval_cx->blk_eval.old_eval_root : | |
2922 | PL_eval_root); | |
2923 | last_eval_cx = cx; | |
9c5794fe RH |
2924 | break; |
2925 | } | |
2926 | /* else fall through */ | |
c6fdafd0 | 2927 | case CXt_LOOP_LAZYIV: |
d01136d6 | 2928 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
2929 | case CXt_LOOP_FOR: |
2930 | case CXt_LOOP_PLAIN: | |
bb5aedc1 VP |
2931 | case CXt_GIVEN: |
2932 | case CXt_WHEN: | |
e6dae479 | 2933 | gotoprobe = OpSIBLING(cx->blk_oldcop); |
a0d0e21e LW |
2934 | break; |
2935 | case CXt_SUBST: | |
2936 | continue; | |
2937 | case CXt_BLOCK: | |
33d34e4c | 2938 | if (ix) { |
e6dae479 | 2939 | gotoprobe = OpSIBLING(cx->blk_oldcop); |
33d34e4c AE |
2940 | in_block = TRUE; |
2941 | } else | |
3280af22 | 2942 | gotoprobe = PL_main_root; |
a0d0e21e | 2943 | break; |
b3933176 | 2944 | case CXt_SUB: |
9850bf21 | 2945 | if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) { |
b3933176 CS |
2946 | gotoprobe = CvROOT(cx->blk_sub.cv); |
2947 | break; | |
2948 | } | |
924ba076 | 2949 | /* FALLTHROUGH */ |
7766f137 | 2950 | case CXt_FORMAT: |
0a753a76 | 2951 | case CXt_NULL: |
a651a37d | 2952 | DIE(aTHX_ "Can't \"goto\" out of a pseudo block"); |
a0d0e21e LW |
2953 | default: |
2954 | if (ix) | |
5637ef5b NC |
2955 | DIE(aTHX_ "panic: goto, type=%u, ix=%ld", |
2956 | CxTYPE(cx), (long) ix); | |
3280af22 | 2957 | gotoprobe = PL_main_root; |
a0d0e21e LW |
2958 | break; |
2959 | } | |
2b597662 | 2960 | if (gotoprobe) { |
29e61fd9 DM |
2961 | OP *sibl1, *sibl2; |
2962 | ||
5db1eb8d | 2963 | retop = dofindlabel(gotoprobe, label, label_len, label_flags, |
2b597662 GS |
2964 | enterops, enterops + GOTO_DEPTH); |
2965 | if (retop) | |
2966 | break; | |
e6dae479 | 2967 | if ( (sibl1 = OpSIBLING(gotoprobe)) && |
29e61fd9 | 2968 | sibl1->op_type == OP_UNSTACK && |
e6dae479 | 2969 | (sibl2 = OpSIBLING(sibl1))) |
29e61fd9 DM |
2970 | { |
2971 | retop = dofindlabel(sibl2, | |
5db1eb8d BF |
2972 | label, label_len, label_flags, enterops, |
2973 | enterops + GOTO_DEPTH); | |
eae48c89 Z |
2974 | if (retop) |
2975 | break; | |
2976 | } | |
2b597662 | 2977 | } |
3280af22 | 2978 | PL_lastgotoprobe = gotoprobe; |
a0d0e21e LW |
2979 | } |
2980 | if (!retop) | |
b17a0679 FC |
2981 | DIE(aTHX_ "Can't find label %"UTF8f, |
2982 | UTF8fARG(label_flags, label_len, label)); | |
a0d0e21e | 2983 | |
3b2447bc RH |
2984 | /* if we're leaving an eval, check before we pop any frames |
2985 | that we're not going to punt, otherwise the error | |
2986 | won't be caught */ | |
2987 | ||
2988 | if (leaving_eval && *enterops && enterops[1]) { | |
2989 | I32 i; | |
2990 | for (i = 1; enterops[i]; i++) | |
2991 | if (enterops[i]->op_type == OP_ENTERITER) | |
2992 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); | |
2993 | } | |
2994 | ||
b500e03b GG |
2995 | if (*enterops && enterops[1]) { |
2996 | I32 i = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; | |
2997 | if (enterops[i]) | |
2998 | deprecate("\"goto\" to jump into a construct"); | |
2999 | } | |
3000 | ||
a0d0e21e LW |
3001 | /* pop unwanted frames */ |
3002 | ||
3003 | if (ix < cxstack_ix) { | |
3004 | I32 oldsave; | |
3005 | ||
3006 | if (ix < 0) | |
5edb7975 | 3007 | DIE(aTHX_ "panic: docatch: illegal ix=%ld", (long)ix); |
a0d0e21e LW |
3008 | dounwind(ix); |
3009 | TOPBLOCK(cx); | |
3280af22 | 3010 | oldsave = PL_scopestack[PL_scopestack_ix]; |
a0d0e21e LW |
3011 | LEAVE_SCOPE(oldsave); |
3012 | } | |
3013 | ||
3014 | /* push wanted frames */ | |
3015 | ||
748a9306 | 3016 | if (*enterops && enterops[1]) { |
0bd48802 | 3017 | OP * const oldop = PL_op; |
33d34e4c AE |
3018 | ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; |
3019 | for (; enterops[ix]; ix++) { | |
533c011a | 3020 | PL_op = enterops[ix]; |
84902520 TB |
3021 | /* Eventually we may want to stack the needed arguments |
3022 | * for each op. For now, we punt on the hard ones. */ | |
533c011a | 3023 | if (PL_op->op_type == OP_ENTERITER) |
894356b3 | 3024 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
16c91539 | 3025 | PL_op->op_ppaddr(aTHX); |
a0d0e21e | 3026 | } |
533c011a | 3027 | PL_op = oldop; |
a0d0e21e LW |
3028 | } |
3029 | } | |
3030 | ||
2631bbca | 3031 | if (do_dump) { |
a5f75d66 | 3032 | #ifdef VMS |
6b88bc9c | 3033 | if (!retop) retop = PL_main_start; |
a5f75d66 | 3034 | #endif |
3280af22 NIS |
3035 | PL_restartop = retop; |
3036 | PL_do_undump = TRUE; | |
a0d0e21e LW |
3037 | |
3038 | my_unexec(); | |
3039 | ||
3280af22 NIS |
3040 | PL_restartop = 0; /* hmm, must be GNU unexec().. */ |
3041 | PL_do_undump = FALSE; | |
a0d0e21e LW |
3042 | } |
3043 | ||
51eb35b5 DD |
3044 | putback_return: |
3045 | PL_stack_sp = sp; | |
3046 | _return: | |
47c9d59f | 3047 | PERL_ASYNC_CHECK(); |
51eb35b5 | 3048 | return retop; |
a0d0e21e LW |
3049 | } |
3050 | ||
3051 | PP(pp_exit) | |
3052 | { | |
39644a26 | 3053 | dSP; |
a0d0e21e LW |
3054 | I32 anum; |
3055 | ||
3056 | if (MAXARG < 1) | |
3057 | anum = 0; | |
9d3c658e FC |
3058 | else if (!TOPs) { |
3059 | anum = 0; (void)POPs; | |
3060 | } | |
ff0cee69 | 3061 | else { |
a0d0e21e | 3062 | anum = SvIVx(POPs); |
d98f61e7 | 3063 | #ifdef VMS |
5450b4d8 FC |
3064 | if (anum == 1 |
3065 | && SvTRUE(cop_hints_fetch_pvs(PL_curcop, "vmsish_exit", 0))) | |
ff0cee69 | 3066 | anum = 0; |
97124ef6 FC |
3067 | VMSISH_HUSHED = |
3068 | VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH); | |
ff0cee69 | 3069 | #endif |
3070 | } | |
cc3604b1 | 3071 | PL_exit_flags |= PERL_EXIT_EXPECTED; |
a0d0e21e | 3072 | my_exit(anum); |
3280af22 | 3073 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
3074 | RETURN; |
3075 | } | |
3076 | ||
a0d0e21e LW |
3077 | /* Eval. */ |
3078 | ||
0824fdcb | 3079 | STATIC void |
cea2e8a9 | 3080 | S_save_lines(pTHX_ AV *array, SV *sv) |
a0d0e21e | 3081 | { |
504618e9 | 3082 | const char *s = SvPVX_const(sv); |
890ce7af | 3083 | const char * const send = SvPVX_const(sv) + SvCUR(sv); |
504618e9 | 3084 | I32 line = 1; |
a0d0e21e | 3085 | |
7918f24d NC |
3086 | PERL_ARGS_ASSERT_SAVE_LINES; |
3087 | ||
a0d0e21e | 3088 | while (s && s < send) { |
f54cb97a | 3089 | const char *t; |
b9f83d2f | 3090 | SV * const tmpstr = newSV_type(SVt_PVMG); |
a0d0e21e | 3091 | |
1d963ff3 | 3092 | t = (const char *)memchr(s, '\n', send - s); |
a0d0e21e LW |
3093 | if (t) |
3094 | t++; | |
3095 | else | |
3096 | t = send; | |
3097 | ||
3098 | sv_setpvn(tmpstr, s, t - s); | |
3099 | av_store(array, line++, tmpstr); | |
3100 | s = t; | |
3101 | } | |
3102 | } | |
3103 | ||
22f16304 RU |
3104 | /* |
3105 | =for apidoc docatch | |
3106 | ||
3107 | Check for the cases 0 or 3 of cur_env.je_ret, only used inside an eval context. | |
3108 | ||
3109 | 0 is used as continue inside eval, | |
3110 | ||
3111 | 3 is used for a die caught by an inner eval - continue inner loop | |
3112 | ||
75af9d73 | 3113 | See F<cop.h>: je_mustcatch, when set at any runlevel to TRUE, means eval ops must |
22f16304 RU |
3114 | establish a local jmpenv to handle exception traps. |
3115 | ||
3116 | =cut | |
3117 | */ | |
0824fdcb | 3118 | STATIC OP * |
cea2e8a9 | 3119 | S_docatch(pTHX_ OP *o) |
1e422769 | 3120 | { |
6224f72b | 3121 | int ret; |
06b5626a | 3122 | OP * const oldop = PL_op; |
db36c5a1 | 3123 | dJMPENV; |
1e422769 | 3124 | |
1e422769 | 3125 | #ifdef DEBUGGING |
54310121 | 3126 | assert(CATCH_GET == TRUE); |
1e422769 | 3127 | #endif |
312caa8e | 3128 | PL_op = o; |
8bffa5f8 | 3129 | |
14dd3ad8 | 3130 | JMPENV_PUSH(ret); |
6224f72b | 3131 | switch (ret) { |
312caa8e | 3132 | case 0: |
abd70938 DM |
3133 | assert(cxstack_ix >= 0); |
3134 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3135 | cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env; | |
14dd3ad8 | 3136 | redo_body: |
85aaa934 | 3137 | CALLRUNOPS(aTHX); |
312caa8e CS |
3138 | break; |
3139 | case 3: | |
8bffa5f8 | 3140 | /* die caught by an inner eval - continue inner loop */ |
febb3a6d Z |
3141 | if (PL_restartop && PL_restartjmpenv == PL_top_env) { |
3142 | PL_restartjmpenv = NULL; | |
312caa8e CS |
3143 | PL_op = PL_restartop; |
3144 | PL_restartop = 0; | |
3145 | goto redo_body; | |
3146 | } | |
924ba076 | 3147 | /* FALLTHROUGH */ |
312caa8e | 3148 | default: |
14dd3ad8 | 3149 | JMPENV_POP; |
533c011a | 3150 | PL_op = oldop; |
6224f72b | 3151 | JMPENV_JUMP(ret); |
e5964223 | 3152 | NOT_REACHED; /* NOTREACHED */ |
1e422769 | 3153 | } |
14dd3ad8 | 3154 | JMPENV_POP; |
533c011a | 3155 | PL_op = oldop; |
5f66b61c | 3156 | return NULL; |
1e422769 | 3157 | } |
3158 | ||
a3985cdc DM |
3159 | |
3160 | /* | |
3161 | =for apidoc find_runcv | |
3162 | ||
3163 | Locate the CV corresponding to the currently executing sub or eval. | |
d819b83a DM |
3164 | If db_seqp is non_null, skip CVs that are in the DB package and populate |
3165 | *db_seqp with the cop sequence number at the point that the DB:: code was | |
72d33970 FC |
3166 | entered. (This allows debuggers to eval in the scope of the breakpoint |
3167 | rather than in the scope of the debugger itself.) | |
a3985cdc DM |
3168 | |
3169 | =cut | |
3170 | */ | |
3171 | ||
3172 | CV* | |
d819b83a | 3173 | Perl_find_runcv(pTHX_ U32 *db_seqp) |
a3985cdc | 3174 | { |
db4cf31d | 3175 | return Perl_find_runcv_where(aTHX_ 0, 0, db_seqp); |
70794f7b FC |
3176 | } |
3177 | ||
3178 | /* If this becomes part of the API, it might need a better name. */ | |
3179 | CV * | |
db4cf31d | 3180 | Perl_find_runcv_where(pTHX_ U8 cond, IV arg, U32 *db_seqp) |
70794f7b | 3181 | { |
a3985cdc | 3182 | PERL_SI *si; |
b4b0692a | 3183 | int level = 0; |
a3985cdc | 3184 | |
d819b83a | 3185 | if (db_seqp) |
c3923c33 DM |
3186 | *db_seqp = |
3187 | PL_curcop == &PL_compiling | |
3188 | ? PL_cop_seqmax | |
3189 | : PL_curcop->cop_seq; | |
3190 | ||
a3985cdc | 3191 | for (si = PL_curstackinfo; si; si = si->si_prev) { |
06b5626a | 3192 | I32 ix; |
a3985cdc | 3193 | for (ix = si->si_cxix; ix >= 0; ix--) { |
06b5626a | 3194 | const PERL_CONTEXT *cx = &(si->si_cxstack[ix]); |
70794f7b | 3195 | CV *cv = NULL; |
d819b83a | 3196 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
70794f7b | 3197 | cv = cx->blk_sub.cv; |
d819b83a DM |
3198 | /* skip DB:: code */ |
3199 | if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) { | |
3200 | *db_seqp = cx->blk_oldcop->cop_seq; | |
3201 | continue; | |
3202 | } | |
a453e28a DM |
3203 | if (cx->cx_type & CXp_SUB_RE) |
3204 | continue; | |
d819b83a | 3205 | } |
a3985cdc | 3206 | else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx)) |
70794f7b FC |
3207 | cv = cx->blk_eval.cv; |
3208 | if (cv) { | |
3209 | switch (cond) { | |
db4cf31d FC |
3210 | case FIND_RUNCV_padid_eq: |
3211 | if (!CvPADLIST(cv) | |
b4db5868 | 3212 | || CvPADLIST(cv)->xpadl_id != (U32)arg) |
8771da69 | 3213 | continue; |
b4b0692a FC |
3214 | return cv; |
3215 | case FIND_RUNCV_level_eq: | |
db4cf31d | 3216 | if (level++ != arg) continue; |
70794f7b FC |
3217 | /* GERONIMO! */ |
3218 | default: | |
3219 | return cv; | |
3220 | } | |
3221 | } | |
a3985cdc DM |
3222 | } |
3223 | } | |
db4cf31d | 3224 | return cond == FIND_RUNCV_padid_eq ? NULL : PL_main_cv; |
a3985cdc DM |
3225 | } |
3226 | ||
3227 | ||
27e90453 DM |
3228 | /* Run yyparse() in a setjmp wrapper. Returns: |
3229 | * 0: yyparse() successful | |
3230 | * 1: yyparse() failed | |
3231 | * 3: yyparse() died | |
3232 | */ | |
3233 | STATIC int | |
28ac2b49 | 3234 | S_try_yyparse(pTHX_ int gramtype) |
27e90453 DM |
3235 | { |
3236 | int ret; | |
3237 | dJMPENV; | |
3238 | ||
3239 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3240 | JMPENV_PUSH(ret); | |
3241 | switch (ret) { | |
3242 | case 0: | |
28ac2b49 | 3243 | ret = yyparse(gramtype) ? 1 : 0; |
27e90453 DM |
3244 | break; |
3245 | case 3: | |
3246 | break; | |
3247 | default: | |
3248 | JMPENV_POP; | |
3249 | JMPENV_JUMP(ret); | |
e5964223 | 3250 | NOT_REACHED; /* NOTREACHED */ |
27e90453 DM |
3251 | } |
3252 | JMPENV_POP; | |
3253 | return ret; | |
3254 | } | |
3255 | ||
3256 | ||
104a8185 DM |
3257 | /* Compile a require/do or an eval ''. |
3258 | * | |
a3985cdc | 3259 | * outside is the lexically enclosing CV (if any) that invoked us. |
104a8185 DM |
3260 | * seq is the current COP scope value. |
3261 | * hh is the saved hints hash, if any. | |
3262 | * | |
410be5db | 3263 | * Returns a bool indicating whether the compile was successful; if so, |
104a8185 DM |
3264 | * PL_eval_start contains the first op of the compiled code; otherwise, |
3265 | * pushes undef. | |
3266 | * | |
3267 | * This function is called from two places: pp_require and pp_entereval. | |
3268 | * These can be distinguished by whether PL_op is entereval. | |
7d116edc FC |
3269 | */ |
3270 | ||
410be5db | 3271 | STATIC bool |
104a8185 | 3272 | S_doeval(pTHX_ int gimme, CV* outside, U32 seq, HV *hh) |
a0d0e21e | 3273 | { |
20b7effb | 3274 | dSP; |
46c461b5 | 3275 | OP * const saveop = PL_op; |
104a8185 | 3276 | bool clear_hints = saveop->op_type != OP_ENTEREVAL; |
f45b078d | 3277 | COP * const oldcurcop = PL_curcop; |
26c9400e | 3278 | bool in_require = (saveop->op_type == OP_REQUIRE); |
27e90453 | 3279 | int yystatus; |
676a678a | 3280 | CV *evalcv; |
a0d0e21e | 3281 | |
27e90453 | 3282 | PL_in_eval = (in_require |
6dc8a9e4 | 3283 | ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL)) |
a1941760 DM |
3284 | : (EVAL_INEVAL | |
3285 | ((PL_op->op_private & OPpEVAL_RE_REPARSING) | |
3286 | ? EVAL_RE_REPARSING : 0))); | |
a0d0e21e | 3287 | |
1ce6579f | 3288 | PUSHMARK(SP); |
3289 | ||
676a678a Z |
3290 | evalcv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
3291 | CvEVAL_on(evalcv); | |
2090ab20 | 3292 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); |
676a678a | 3293 | cxstack[cxstack_ix].blk_eval.cv = evalcv; |
86a64801 | 3294 | cxstack[cxstack_ix].blk_gimme = gimme; |
2090ab20 | 3295 | |
676a678a Z |
3296 | CvOUTSIDE_SEQ(evalcv) = seq; |
3297 | CvOUTSIDE(evalcv) = MUTABLE_CV(SvREFCNT_inc_simple(outside)); | |
a3985cdc | 3298 | |
dd2155a4 | 3299 | /* set up a scratch pad */ |
a0d0e21e | 3300 | |
eacbb379 | 3301 | CvPADLIST_set(evalcv, pad_new(padnew_SAVE)); |
cecbe010 | 3302 | PL_op = NULL; /* avoid PL_op and PL_curpad referring to different CVs */ |
2c05e328 | 3303 | |
07055b4c | 3304 | |
b5bbe64a | 3305 | SAVEMORTALIZESV(evalcv); /* must remain until end of current statement */ |
748a9306 | 3306 | |
a0d0e21e LW |
3307 | /* make sure we compile in the right package */ |
3308 | ||
ed094faf | 3309 | if (CopSTASH_ne(PL_curcop, PL_curstash)) { |
03d9f026 | 3310 | SAVEGENERICSV(PL_curstash); |
cb1ad50e FC |
3311 | PL_curstash = (HV *)CopSTASH(PL_curcop); |
3312 | if (SvTYPE(PL_curstash) != SVt_PVHV) PL_curstash = NULL; | |
3313 | else SvREFCNT_inc_simple_void(PL_curstash); | |
a0d0e21e | 3314 | } |
3c10abe3 | 3315 | /* XXX:ajgo do we really need to alloc an AV for begin/checkunit */ |
3280af22 NIS |
3316 | SAVESPTR(PL_beginav); |
3317 | PL_beginav = newAV(); | |
3318 | SAVEFREESV(PL_beginav); | |
3c10abe3 AG |
3319 | SAVESPTR(PL_unitcheckav); |
3320 | PL_unitcheckav = newAV(); | |
3321 | SAVEFREESV(PL_unitcheckav); | |
a0d0e21e | 3322 | |
81d86705 | 3323 | |
104a8185 | 3324 | ENTER_with_name("evalcomp"); |
676a678a Z |
3325 | SAVESPTR(PL_compcv); |
3326 | PL_compcv = evalcv; | |
3327 | ||
a0d0e21e LW |
3328 | /* try to compile it */ |
3329 | ||
5f66b61c | 3330 | PL_eval_root = NULL; |
3280af22 | 3331 | PL_curcop = &PL_compiling; |
26c9400e | 3332 | if ((saveop->op_type != OP_REQUIRE) && (saveop->op_flags & OPf_SPECIAL)) |
faef0170 | 3333 | PL_in_eval |= EVAL_KEEPERR; |
ab69dbc2 RGS |
3334 | else |
3335 | CLEAR_ERRSV(); | |
27e90453 | 3336 | |
377b5421 DM |
3337 | SAVEHINTS(); |
3338 | if (clear_hints) { | |
3339 | PL_hints = 0; | |
3340 | hv_clear(GvHV(PL_hintgv)); | |
3341 | } | |
3342 | else { | |
3343 | PL_hints = saveop->op_private & OPpEVAL_COPHH | |
3344 | ? oldcurcop->cop_hints : saveop->op_targ; | |
4f3e2518 DM |
3345 | |
3346 | /* making 'use re eval' not be in scope when compiling the | |
3347 | * qr/mabye_has_runtime_code_block/ ensures that we don't get | |
3348 | * infinite recursion when S_has_runtime_code() gives a false | |
3349 | * positive: the second time round, HINT_RE_EVAL isn't set so we | |
3350 | * don't bother calling S_has_runtime_code() */ | |
3351 | if (PL_in_eval & EVAL_RE_REPARSING) | |
3352 | PL_hints &= ~HINT_RE_EVAL; | |
3353 | ||
377b5421 DM |
3354 | if (hh) { |
3355 | /* SAVEHINTS created a new HV in PL_hintgv, which we need to GC */ | |
3356 | SvREFCNT_dec(GvHV(PL_hintgv)); | |
3357 | GvHV(PL_hintgv) = hh; | |
3358 | } | |
3359 | } | |
3360 | SAVECOMPILEWARNINGS(); | |
3361 | if (clear_hints) { | |
3362 | if (PL_dowarn & G_WARN_ALL_ON) | |
3363 | PL_compiling.cop_warnings = pWARN_ALL ; | |
3364 | else if (PL_dowarn & G_WARN_ALL_OFF) | |
3365 | PL_compiling.cop_warnings = pWARN_NONE ; | |
3366 | else | |
3367 | PL_compiling.cop_warnings = pWARN_STD ; | |
3368 | } | |
3369 | else { | |
3370 | PL_compiling.cop_warnings = | |
3371 | DUP_WARNINGS(oldcurcop->cop_warnings); | |
3372 | cophh_free(CopHINTHASH_get(&PL_compiling)); | |
3373 | if (Perl_cop_fetch_label(aTHX_ oldcurcop, NULL, NULL)) { | |
3374 | /* The label, if present, is the first entry on the chain. So rather | |
3375 | than writing a blank label in front of it (which involves an | |
3376 | allocation), just use the next entry in the chain. */ | |
3377 | PL_compiling.cop_hints_hash | |
3378 | = cophh_copy(oldcurcop->cop_hints_hash->refcounted_he_next); | |
3379 | /* Check the assumption that this removed the label. */ | |
3380 | assert(Perl_cop_fetch_label(aTHX_ &PL_compiling, NULL, NULL) == NULL); | |
f45b078d | 3381 | } |
377b5421 DM |
3382 | else |
3383 | PL_compiling.cop_hints_hash = cophh_copy(oldcurcop->cop_hints_hash); | |
3384 | } | |
f45b078d | 3385 | |
a88d97bf | 3386 | CALL_BLOCK_HOOKS(bhk_eval, saveop); |
52db365a | 3387 | |
27e90453 DM |
3388 | /* note that yyparse() may raise an exception, e.g. C<BEGIN{die}>, |
3389 | * so honour CATCH_GET and trap it here if necessary */ | |
3390 | ||
28ac2b49 | 3391 | yystatus = (!in_require && CATCH_GET) ? S_try_yyparse(aTHX_ GRAMPROG) : yyparse(GRAMPROG); |
27e90453 DM |
3392 | |
3393 | if (yystatus || PL_parser->error_count || !PL_eval_root) { | |
0c58d367 | 3394 | SV **newsp; /* Used by POPBLOCK. */ |
d164302a | 3395 | PERL_CONTEXT *cx; |
27e90453 | 3396 | I32 optype; /* Used by POPEVAL. */ |
d164302a | 3397 | SV *namesv; |
eed484f9 | 3398 | SV *errsv = NULL; |
bfed75c6 | 3399 | |
d164302a GG |
3400 | cx = NULL; |
3401 | namesv = NULL; | |
27e90453 DM |
3402 | PERL_UNUSED_VAR(newsp); |
3403 | PERL_UNUSED_VAR(optype); | |
3404 | ||
c86ffc32 DM |
3405 | /* note that if yystatus == 3, then the EVAL CX block has already |
3406 | * been popped, and various vars restored */ | |
533c011a | 3407 | PL_op = saveop; |
27e90453 | 3408 | if (yystatus != 3) { |
c86ffc32 DM |
3409 | if (PL_eval_root) { |
3410 | op_free(PL_eval_root); | |
3411 | PL_eval_root = NULL; | |
3412 | } | |
27e90453 | 3413 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
377b5421 DM |
3414 | POPBLOCK(cx,PL_curpm); |
3415 | POPEVAL(cx); | |
3416 | namesv = cx->blk_eval.old_namesv; | |
bbde7ba3 | 3417 | /* POPBLOCK renders LEAVE_with_name("evalcomp") unnecessary. */ |
27e90453 | 3418 | LEAVE_with_name("eval"); /* pp_entereval knows about this LEAVE. */ |
cd6472fc | 3419 | } |
9d4ba2ae | 3420 | |
eed484f9 | 3421 | errsv = ERRSV; |
27e90453 | 3422 | if (in_require) { |
b6494f15 VP |
3423 | if (!cx) { |
3424 | /* If cx is still NULL, it means that we didn't go in the | |
3425 | * POPEVAL branch. */ | |
3426 | cx = &cxstack[cxstack_ix]; | |
3427 | assert(CxTYPE(cx) == CXt_EVAL); | |
3428 | namesv = cx->blk_eval.old_namesv; | |
3429 | } | |
3430 | (void)hv_store(GvHVn(PL_incgv), | |
ecad31f0 | 3431 | SvPVX_const(namesv), |
c60dbbc3 | 3432 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 | 3433 | &PL_sv_undef, 0); |
ecad31f0 | 3434 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
eed484f9 DD |
3435 | SVfARG(errsv |
3436 | ? errsv | |
ecad31f0 | 3437 | : newSVpvs_flags("Unknown error\n", SVs_TEMP))); |
5a844595 | 3438 | } |
9d7f88dd | 3439 | else { |
eed484f9 DD |
3440 | if (!*(SvPV_nolen_const(errsv))) { |
3441 | sv_setpvs(errsv, "Compilation error"); | |
9d7f88dd SR |
3442 | } |
3443 | } | |
2bf54cc6 | 3444 | if (gimme != G_ARRAY) PUSHs(&PL_sv_undef); |
410be5db DM |
3445 | PUTBACK; |
3446 | return FALSE; | |
a0d0e21e | 3447 | } |
104a8185 DM |
3448 | else |
3449 | LEAVE_with_name("evalcomp"); | |
3450 | ||
57843af0 | 3451 | CopLINE_set(&PL_compiling, 0); |
104a8185 | 3452 | SAVEFREEOP(PL_eval_root); |
8be227ab | 3453 | cv_forget_slab(evalcv); |
0c58d367 | 3454 | |
a0d0e21e LW |
3455 | DEBUG_x(dump_eval()); |
3456 | ||
55497cff | 3457 | /* Register with debugger: */ |
26c9400e | 3458 | if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) { |
b96d8cd9 | 3459 | CV * const cv = get_cvs("DB::postponed", 0); |
55497cff | 3460 | if (cv) { |
3461 | dSP; | |
924508f0 | 3462 | PUSHMARK(SP); |
ad64d0ec | 3463 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
55497cff | 3464 | PUTBACK; |
ad64d0ec | 3465 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
55497cff | 3466 | } |
3467 | } | |
3468 | ||
8ed49485 FC |
3469 | if (PL_unitcheckav) { |
3470 | OP *es = PL_eval_start; | |
3c10abe3 | 3471 | call_list(PL_scopestack_ix, PL_unitcheckav); |
8ed49485 FC |
3472 | PL_eval_start = es; |
3473 | } | |
3c10abe3 | 3474 | |
a0d0e21e LW |
3475 | /* compiled okay, so do it */ |
3476 | ||
676a678a | 3477 | CvDEPTH(evalcv) = 1; |
3280af22 | 3478 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
533c011a | 3479 | PL_op = saveop; /* The caller may need it. */ |
bc177e6b | 3480 | PL_parser->lex_state = LEX_NOTPARSING; /* $^S needs this. */ |
5dc0d613 | 3481 | |
410be5db DM |
3482 | PUTBACK; |
3483 | return TRUE; | |
a0d0e21e LW |
3484 | } |
3485 | ||
a6c40364 | 3486 | STATIC PerlIO * |
282b29ee | 3487 | S_check_type_and_open(pTHX_ SV *name) |
ce8abf5f SP |
3488 | { |
3489 | Stat_t st; | |
41188aa0 | 3490 | STRLEN len; |
d345f487 | 3491 | PerlIO * retio; |
41188aa0 | 3492 | const char *p = SvPV_const(name, len); |
c8028aa6 | 3493 | int st_rc; |
df528165 | 3494 | |
7918f24d NC |
3495 | PERL_ARGS_ASSERT_CHECK_TYPE_AND_OPEN; |
3496 | ||
c8028aa6 TC |
3497 | /* checking here captures a reasonable error message when |
3498 | * PERL_DISABLE_PMC is true, but when PMC checks are enabled, the | |
3499 | * user gets a confusing message about looking for the .pmc file | |
3500 | * rather than for the .pm file. | |
3501 | * This check prevents a \0 in @INC causing problems. | |
3502 | */ | |
41188aa0 | 3503 | if (!IS_SAFE_PATHNAME(p, len, "require")) |
c8028aa6 TC |
3504 | return NULL; |
3505 | ||
d345f487 DD |
3506 | /* on Win32 stat is expensive (it does an open() and close() twice and |
3507 | a couple other IO calls), the open will fail with a dir on its own with | |
3508 | errno EACCES, so only do a stat to separate a dir from a real EACCES | |
3509 | caused by user perms */ | |
3510 | #ifndef WIN32 | |
b2da7ead DM |
3511 | /* we use the value of errno later to see how stat() or open() failed. |
3512 | * We don't want it set if the stat succeeded but we still failed, | |
3513 | * such as if the name exists, but is a directory */ | |
3514 | errno = 0; | |
3515 | ||
c8028aa6 TC |
3516 | st_rc = PerlLIO_stat(p, &st); |
3517 | ||
6b845e56 | 3518 | if (st_rc < 0 || S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) { |
4608196e | 3519 | return NULL; |
ce8abf5f | 3520 | } |
d345f487 | 3521 | #endif |
ce8abf5f | 3522 | |
d345f487 | 3523 | retio = PerlIO_openn(aTHX_ ":", PERL_SCRIPT_MODE, -1, 0, 0, NULL, 1, &name); |
d345f487 DD |
3524 | #ifdef WIN32 |
3525 | /* EACCES stops the INC search early in pp_require to implement | |
3526 | feature RT #113422 */ | |
3527 | if(!retio && errno == EACCES) { /* exists but probably a directory */ | |
3528 | int eno; | |
3529 | st_rc = PerlLIO_stat(p, &st); | |
3530 | if (st_rc >= 0) { | |
3531 | if(S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) | |
3532 | eno = 0; | |
3533 | else | |
3534 | eno = EACCES; | |
3535 | errno = eno; | |
3536 | } | |
3537 | } | |
ccb84406 | 3538 | #endif |
d345f487 | 3539 | return retio; |
ce8abf5f SP |
3540 | } |
3541 | ||
75c20bac | 3542 | #ifndef PERL_DISABLE_PMC |
ce8abf5f | 3543 | STATIC PerlIO * |
282b29ee | 3544 | S_doopen_pm(pTHX_ SV *name) |
b295d113 | 3545 | { |
282b29ee NC |
3546 | STRLEN namelen; |
3547 | const char *p = SvPV_const(name, namelen); | |
b295d113 | 3548 | |
7918f24d NC |
3549 | PERL_ARGS_ASSERT_DOOPEN_PM; |
3550 | ||
c8028aa6 TC |
3551 | /* check the name before trying for the .pmc name to avoid the |
3552 | * warning referring to the .pmc which the user probably doesn't | |
3553 | * know or care about | |
3554 | */ | |
41188aa0 | 3555 | if (!IS_SAFE_PATHNAME(p, namelen, "require")) |
c8028aa6 TC |
3556 | return NULL; |
3557 | ||
282b29ee | 3558 | if (namelen > 3 && memEQs(p + namelen - 3, 3, ".pm")) { |
eb70bb4a | 3559 | SV *const pmcsv = sv_newmortal(); |
a6c40364 | 3560 | Stat_t pmcstat; |
50b8ed39 | 3561 | |
eb70bb4a | 3562 | SvSetSV_nosteal(pmcsv,name); |
46e2868e | 3563 | sv_catpvs(pmcsv, "c"); |
50b8ed39 | 3564 | |
282b29ee NC |
3565 | if (PerlLIO_stat(SvPV_nolen_const(pmcsv), &pmcstat) >= 0) |
3566 | return check_type_and_open(pmcsv); | |
a6c40364 | 3567 | } |
282b29ee | 3568 | return check_type_and_open(name); |
75c20bac | 3569 | } |
7925835c | 3570 | #else |
282b29ee | 3571 | # define doopen_pm(name) check_type_and_open(name) |
7925835c | 3572 | #endif /* !PERL_DISABLE_PMC */ |
b295d113 | 3573 | |
511712dc | 3574 | /* require doesn't search for absolute names, or when the name is |
f6bab5f6 | 3575 | explicitly relative the current directory */ |
511712dc TC |
3576 | PERL_STATIC_INLINE bool |
3577 | S_path_is_searchable(const char *name) | |
3578 | { | |
3579 | PERL_ARGS_ASSERT_PATH_IS_SEARCHABLE; | |
3580 | ||
3581 | if (PERL_FILE_IS_ABSOLUTE(name) | |
3582 | #ifdef WIN32 | |
3583 | || (*name == '.' && ((name[1] == '/' || | |
3584 | (name[1] == '.' && name[2] == '/')) | |
3585 | || (name[1] == '\\' || | |
3586 | ( name[1] == '.' && name[2] == '\\'))) | |
3587 | ) | |
3588 | #else | |
3589 | || (*name == '.' && (name[1] == '/' || | |
3590 | (name[1] == '.' && name[2] == '/'))) | |
3591 | #endif | |
3592 | ) | |
3593 | { | |
3594 | return FALSE; | |
3595 | } | |
3596 | else | |
3597 | return TRUE; | |
3598 | } | |
3599 | ||
b1c05ba5 DM |
3600 | |
3601 | /* also used for: pp_dofile() */ | |
3602 | ||
a0d0e21e LW |
3603 | PP(pp_require) |
3604 | { | |
20b7effb | 3605 | dSP; |
eb578fdb | 3606 | PERL_CONTEXT *cx; |
a0d0e21e | 3607 | SV *sv; |
5c144d81 | 3608 | const char *name; |
6132ea6c | 3609 | STRLEN len; |
4492be7a JM |
3610 | char * unixname; |
3611 | STRLEN unixlen; | |
62f5ad7a | 3612 | #ifdef VMS |
4492be7a | 3613 | int vms_unixname = 0; |
155f4c25 | 3614 | char *unixdir; |
62f5ad7a | 3615 | #endif |
c445ea15 AL |
3616 | const char *tryname = NULL; |
3617 | SV *namesv = NULL; | |
f54cb97a | 3618 | const I32 gimme = GIMME_V; |
bbed91b5 | 3619 | int filter_has_file = 0; |
c445ea15 | 3620 | PerlIO *tryrsfp = NULL; |
34113e50 | 3621 | SV *filter_cache = NULL; |
c445ea15 AL |
3622 | SV *filter_state = NULL; |
3623 | SV *filter_sub = NULL; | |
3624 | SV *hook_sv = NULL; | |
6ec9efec | 3625 | OP *op; |
83b195e4 | 3626 | int saved_errno; |
511712dc | 3627 | bool path_searchable; |
a0d0e21e LW |
3628 | |
3629 | sv = POPs; | |
672794ca | 3630 | SvGETMAGIC(sv); |
d7aa5382 | 3631 | if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) { |
d086148c | 3632 | sv = sv_2mortal(new_version(sv)); |
88010bae | 3633 | if (!Perl_sv_derived_from_pvn(aTHX_ PL_patchlevel, STR_WITH_LEN("version"), 0)) |
ac0e6a2f | 3634 | upg_version(PL_patchlevel, TRUE); |
149c1637 | 3635 | if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) { |
3cacfbb9 | 3636 | if ( vcmp(sv,PL_patchlevel) <= 0 ) |
468aa647 | 3637 | DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped", |
e753e3b1 FC |
3638 | SVfARG(sv_2mortal(vnormal(sv))), |
3639 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3640 | ); | |
468aa647 RGS |
3641 | } |
3642 | else { | |
d1029faa JP |
3643 | if ( vcmp(sv,PL_patchlevel) > 0 ) { |
3644 | I32 first = 0; | |
3645 | AV *lav; | |
3646 | SV * const req = SvRV(sv); | |
85fbaab2 | 3647 | SV * const pv = *hv_fetchs(MUTABLE_HV(req), "original", FALSE); |
d1029faa JP |
3648 | |
3649 | /* get the left hand term */ | |
502c6561 | 3650 | lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(req), "version", FALSE))); |
d1029faa JP |
3651 | |
3652 | first = SvIV(*av_fetch(lav,0,0)); | |
3653 | if ( first > (int)PERL_REVISION /* probably 'use 6.0' */ | |
85fbaab2 | 3654 | || hv_exists(MUTABLE_HV(req), "qv", 2 ) /* qv style */ |
b9f2b683 | 3655 | || av_tindex(lav) > 1 /* FP with > 3 digits */ |
d1029faa JP |
3656 | || strstr(SvPVX(pv),".0") /* FP with leading 0 */ |
3657 | ) { | |
3658 | DIE(aTHX_ "Perl %"SVf" required--this is only " | |
9d056fb0 FC |
3659 | "%"SVf", stopped", |
3660 | SVfARG(sv_2mortal(vnormal(req))), | |
3661 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3662 | ); | |
d1029faa JP |
3663 | } |
3664 | else { /* probably 'use 5.10' or 'use 5.8' */ | |
af61dbfd | 3665 | SV *hintsv; |
d1029faa JP |
3666 | I32 second = 0; |
3667 | ||
b9f2b683 | 3668 | if (av_tindex(lav)>=1) |
d1029faa JP |
3669 | second = SvIV(*av_fetch(lav,1,0)); |
3670 | ||
3671 | second /= second >= 600 ? 100 : 10; | |
af61dbfd NC |
3672 | hintsv = Perl_newSVpvf(aTHX_ "v%d.%d.0", |
3673 | (int)first, (int)second); | |
d1029faa JP |
3674 | upg_version(hintsv, TRUE); |
3675 | ||
3676 | DIE(aTHX_ "Perl %"SVf" required (did you mean %"SVf"?)" | |
3677 | "--this is only %"SVf", stopped", | |
1be7d6f3 FC |
3678 | SVfARG(sv_2mortal(vnormal(req))), |
3679 | SVfARG(sv_2mortal(vnormal(sv_2mortal(hintsv)))), | |
3680 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3681 | ); | |
d1029faa JP |
3682 | } |
3683 | } | |
468aa647 | 3684 | } |
d7aa5382 | 3685 | |
7dfde25d | 3686 | RETPUSHYES; |
a0d0e21e | 3687 | } |
f04d2c34 YO |
3688 | if (!SvOK(sv)) |
3689 | DIE(aTHX_ "Missing or undefined argument to require"); | |
672794ca | 3690 | name = SvPV_nomg_const(sv, len); |
6132ea6c | 3691 | if (!(name && len > 0 && *name)) |
f04d2c34 YO |
3692 | DIE(aTHX_ "Missing or undefined argument to require"); |
3693 | ||
41188aa0 | 3694 | if (!IS_SAFE_PATHNAME(name, len, "require")) { |
c8028aa6 TC |
3695 | DIE(aTHX_ "Can't locate %s: %s", |
3696 | pv_escape(newSVpvs_flags("",SVs_TEMP),SvPVX(sv),SvCUR(sv), | |
3697 | SvCUR(sv)*2,NULL, SvUTF8(sv)?PERL_PV_ESCAPE_UNI:0), | |
3698 | Strerror(ENOENT)); | |
3699 | } | |
4633a7c4 | 3700 | TAINT_PROPER("require"); |
4492be7a | 3701 | |
511712dc | 3702 | path_searchable = path_is_searchable(name); |
4492be7a JM |
3703 | |
3704 | #ifdef VMS | |
3705 | /* The key in the %ENV hash is in the syntax of file passed as the argument | |
3706 | * usually this is in UNIX format, but sometimes in VMS format, which | |
3707 | * can result in a module being pulled in more than once. | |
3708 | * To prevent this, the key must be stored in UNIX format if the VMS | |
3709 | * name can be translated to UNIX. | |
3710 | */ | |
155f4c25 | 3711 | |
8de90695 FC |
3712 | if ((unixname = |
3713 | tounixspec(name, SvPVX(sv_2mortal(newSVpv("", VMS_MAXRSS-1))))) | |
3714 | != NULL) { | |
4492be7a JM |
3715 | unixlen = strlen(unixname); |
3716 | vms_unixname = 1; | |
3717 | } | |
3718 | else | |
3719 | #endif | |
3720 | { | |
3721 | /* if not VMS or VMS name can not be translated to UNIX, pass it | |
3722 | * through. | |
3723 | */ | |
3724 | unixname = (char *) name; | |
3725 | unixlen = len; | |
3726 | } | |
44f8325f | 3727 | if (PL_op->op_type == OP_REQUIRE) { |
4492be7a JM |
3728 | SV * const * const svp = hv_fetch(GvHVn(PL_incgv), |
3729 | unixname, unixlen, 0); | |
44f8325f AL |
3730 | if ( svp ) { |
3731 | if (*svp != &PL_sv_undef) | |
3732 | RETPUSHYES; | |
3733 | else | |
087b5369 RD |
3734 | DIE(aTHX_ "Attempt to reload %s aborted.\n" |
3735 | "Compilation failed in require", unixname); | |
44f8325f | 3736 | } |
4d8b06f1 | 3737 | } |
a0d0e21e | 3738 | |
32aeab29 SM |
3739 | LOADING_FILE_PROBE(unixname); |
3740 | ||
a0d0e21e LW |
3741 | /* prepare to compile file */ |
3742 | ||
511712dc | 3743 | if (!path_searchable) { |
282b29ee | 3744 | /* At this point, name is SvPVX(sv) */ |
46fc3d4c | 3745 | tryname = name; |
282b29ee | 3746 | tryrsfp = doopen_pm(sv); |
bf4acbe4 | 3747 | } |
511712dc | 3748 | if (!tryrsfp && !(errno == EACCES && !path_searchable)) { |
44f8325f | 3749 | AV * const ar = GvAVn(PL_incgv); |
c70927a6 | 3750 | SSize_t i; |
748a9306 | 3751 | #ifdef VMS |
4492be7a | 3752 | if (vms_unixname) |
46fc3d4c | 3753 | #endif |
3754 | { | |
9ffd39ab | 3755 | SV *nsv = sv; |
d0328fd7 | 3756 | namesv = newSV_type(SVt_PV); |
46fc3d4c | 3757 | for (i = 0; i <= AvFILL(ar); i++) { |
df528165 | 3758 | SV * const dirsv = *av_fetch(ar, i, TRUE); |
bbed91b5 | 3759 | |
6567ce24 | 3760 | SvGETMAGIC(dirsv); |
bbed91b5 KF |
3761 | if (SvROK(dirsv)) { |
3762 | int count; | |
a3b58a99 | 3763 | SV **svp; |
bbed91b5 KF |
3764 | SV *loader = dirsv; |
3765 | ||
e14e2dc8 | 3766 | if (SvTYPE(SvRV(loader)) == SVt_PVAV |
6567ce24 | 3767 | && !SvOBJECT(SvRV(loader))) |
e14e2dc8 | 3768 | { |
502c6561 | 3769 | loader = *av_fetch(MUTABLE_AV(SvRV(loader)), 0, TRUE); |
6567ce24 | 3770 | SvGETMAGIC(loader); |
bbed91b5 KF |
3771 | } |
3772 | ||
b900a521 | 3773 | Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s", |
44f0be63 | 3774 | PTR2UV(SvRV(dirsv)), name); |
349d4f2f | 3775 | tryname = SvPVX_const(namesv); |
c445ea15 | 3776 | tryrsfp = NULL; |
bbed91b5 | 3777 | |
9ffd39ab FC |
3778 | if (SvPADTMP(nsv)) { |
3779 | nsv = sv_newmortal(); | |
3780 | SvSetSV_nosteal(nsv,sv); | |
3781 | } | |
901ee108 FC |
3782 | |
3783 | ENTER_with_name("call_INC"); | |
3784 | SAVETMPS; | |
bbed91b5 KF |
3785 | EXTEND(SP, 2); |
3786 | ||
3787 | PUSHMARK(SP); | |
3788 | PUSHs(dirsv); | |
9ffd39ab | 3789 | PUSHs(nsv); |
bbed91b5 | 3790 | PUTBACK; |
6567ce24 FC |
3791 | if (SvGMAGICAL(loader)) { |
3792 | SV *l = sv_newmortal(); | |
3793 | sv_setsv_nomg(l, loader); | |
3794 | loader = l; | |
3795 | } | |
e982885c NC |
3796 | if (sv_isobject(loader)) |
3797 | count = call_method("INC", G_ARRAY); | |
3798 | else | |
3799 | count = call_sv(loader, G_ARRAY); | |
bbed91b5 KF |
3800 | SPAGAIN; |
3801 | ||
3802 | if (count > 0) { | |
3803 | int i = 0; | |
3804 | SV *arg; | |
3805 | ||
3806 | SP -= count - 1; | |
3807 | arg = SP[i++]; | |
3808 | ||
34113e50 NC |
3809 | if (SvROK(arg) && (SvTYPE(SvRV(arg)) <= SVt_PVLV) |
3810 | && !isGV_with_GP(SvRV(arg))) { | |
3811 | filter_cache = SvRV(arg); | |
34113e50 NC |
3812 | |
3813 | if (i < count) { | |
3814 | arg = SP[i++]; | |
3815 | } | |
3816 | } | |
3817 | ||
6e592b3a | 3818 | if (SvROK(arg) && isGV_with_GP(SvRV(arg))) { |
bbed91b5 KF |
3819 | arg = SvRV(arg); |
3820 | } | |
3821 | ||
6e592b3a | 3822 | if (isGV_with_GP(arg)) { |
159b6efe | 3823 | IO * const io = GvIO((const GV *)arg); |
bbed91b5 KF |
3824 | |
3825 | ++filter_has_file; | |
3826 | ||
3827 | if (io) { | |
3828 | tryrsfp = IoIFP(io); | |
0f7de14d NC |
3829 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { |
3830 | PerlIO_close(IoOFP(io)); | |
bbed91b5 | 3831 | } |
0f7de14d NC |
3832 | IoIFP(io) = NULL; |
3833 | IoOFP(io) = NULL; | |
bbed91b5 KF |
3834 | } |
3835 | ||
3836 | if (i < count) { | |
3837 | arg = SP[i++]; | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) { | |
3842 | filter_sub = arg; | |
74c765eb | 3843 | SvREFCNT_inc_simple_void_NN(filter_sub); |
bbed91b5 KF |
3844 | |
3845 | if (i < count) { | |
3846 | filter_state = SP[i]; | |
b37c2d43 | 3847 | SvREFCNT_inc_simple_void(filter_state); |
bbed91b5 | 3848 | } |
34113e50 | 3849 | } |
bbed91b5 | 3850 | |
34113e50 NC |
3851 | if (!tryrsfp && (filter_cache || filter_sub)) { |
3852 | tryrsfp = PerlIO_open(BIT_BUCKET, | |
3853 | PERL_SCRIPT_MODE); | |
bbed91b5 | 3854 | } |
1d06aecd | 3855 | SP--; |
bbed91b5 KF |
3856 | } |
3857 | ||
c39fcc09 FC |
3858 | /* FREETMPS may free our filter_cache */ |
3859 | SvREFCNT_inc_simple_void(filter_cache); | |
3860 | ||
bbed91b5 KF |
3861 | PUTBACK; |
3862 | FREETMPS; | |
d343c3ef | 3863 | LEAVE_with_name("call_INC"); |
bbed91b5 | 3864 | |
c39fcc09 FC |
3865 | /* Now re-mortalize it. */ |
3866 | sv_2mortal(filter_cache); | |
3867 | ||
c5f55552 NC |
3868 | /* Adjust file name if the hook has set an %INC entry. |
3869 | This needs to happen after the FREETMPS above. */ | |
3870 | svp = hv_fetch(GvHVn(PL_incgv), name, len, 0); | |
3871 | if (svp) | |
3872 | tryname = SvPV_nolen_const(*svp); | |
3873 | ||
bbed91b5 | 3874 | if (tryrsfp) { |
89ccab8c | 3875 | hook_sv = dirsv; |
bbed91b5 KF |
3876 | break; |
3877 | } | |
3878 | ||
3879 | filter_has_file = 0; | |
9b7d7782 | 3880 | filter_cache = NULL; |
bbed91b5 | 3881 | if (filter_state) { |
762333d9 | 3882 | SvREFCNT_dec_NN(filter_state); |
c445ea15 | 3883 | filter_state = NULL; |
bbed91b5 KF |
3884 | } |
3885 | if (filter_sub) { | |
762333d9 | 3886 | SvREFCNT_dec_NN(filter_sub); |
c445ea15 | 3887 | filter_sub = NULL; |
bbed91b5 KF |
3888 | } |
3889 | } | |
3890 | else { | |
511712dc | 3891 | if (path_searchable) { |
b640a14a NC |
3892 | const char *dir; |
3893 | STRLEN dirlen; | |
3894 | ||
3895 | if (SvOK(dirsv)) { | |
6567ce24 | 3896 | dir = SvPV_nomg_const(dirsv, dirlen); |
b640a14a NC |
3897 | } else { |
3898 | dir = ""; | |
3899 | dirlen = 0; | |
3900 | } | |
3901 | ||
ddc65b67 CB |
3902 | if (!IS_SAFE_SYSCALL(dir, dirlen, "@INC entry", "require")) |
3903 | continue; | |
e37778c2 | 3904 | #ifdef VMS |
8de90695 FC |
3905 | if ((unixdir = |
3906 | tounixpath(dir, SvPVX(sv_2mortal(newSVpv("", VMS_MAXRSS-1))))) | |
3907 | == NULL) | |
bbed91b5 KF |
3908 | continue; |
3909 | sv_setpv(namesv, unixdir); | |
3910 | sv_catpv(namesv, unixname); | |
e37778c2 NC |
3911 | #else |
3912 | # ifdef __SYMBIAN32__ | |
27da23d5 JH |
3913 | if (PL_origfilename[0] && |
3914 | PL_origfilename[1] == ':' && | |
3915 | !(dir[0] && dir[1] == ':')) | |
3916 | Perl_sv_setpvf(aTHX_ namesv, | |
3917 | "%c:%s\\%s", | |
3918 | PL_origfilename[0], | |
3919 | dir, name); | |
3920 | else | |
3921 | Perl_sv_setpvf(aTHX_ namesv, | |
3922 | "%s\\%s", | |
3923 | dir, name); | |
e37778c2 | 3924 | # else |
b640a14a NC |
3925 | /* The equivalent of |
3926 | Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name); | |
3927 | but without the need to parse the format string, or | |
3928 | call strlen on either pointer, and with the correct | |
3929 | allocation up front. */ | |
3930 | { | |
3931 | char *tmp = SvGROW(namesv, dirlen + len + 2); | |
3932 | ||
3933 | memcpy(tmp, dir, dirlen); | |
3934 | tmp +=dirlen; | |
6b0bdd7f MH |
3935 | |
3936 | /* Avoid '<dir>//<file>' */ | |
3937 | if (!dirlen || *(tmp-1) != '/') { | |
3938 | *tmp++ = '/'; | |
9fdd5a7a MH |
3939 | } else { |
3940 | /* So SvCUR_set reports the correct length below */ | |
3941 | dirlen--; | |
6b0bdd7f MH |
3942 | } |
3943 | ||
b640a14a NC |
3944 | /* name came from an SV, so it will have a '\0' at the |
3945 | end that we can copy as part of this memcpy(). */ | |
3946 | memcpy(tmp, name, len + 1); | |
3947 | ||
3948 | SvCUR_set(namesv, dirlen + len + 1); | |
282b29ee | 3949 | SvPOK_on(namesv); |
b640a14a | 3950 | } |
27da23d5 | 3951 | # endif |
bf4acbe4 | 3952 | #endif |
bbed91b5 | 3953 | TAINT_PROPER("require"); |
349d4f2f | 3954 | tryname = SvPVX_const(namesv); |
282b29ee | 3955 | tryrsfp = doopen_pm(namesv); |
bbed91b5 | 3956 | if (tryrsfp) { |
e63be746 RGS |
3957 | if (tryname[0] == '.' && tryname[1] == '/') { |
3958 | ++tryname; | |
4910606a | 3959 | while (*++tryname == '/') {} |
e63be746 | 3960 | } |
bbed91b5 KF |
3961 | break; |
3962 | } | |
2433d39e BF |
3963 | else if (errno == EMFILE || errno == EACCES) { |
3964 | /* no point in trying other paths if out of handles; | |
3965 | * on the other hand, if we couldn't open one of the | |
3966 | * files, then going on with the search could lead to | |
3967 | * unexpected results; see perl #113422 | |
3968 | */ | |
3969 | break; | |
3970 | } | |
be4b629d | 3971 | } |
46fc3d4c | 3972 | } |
a0d0e21e LW |
3973 | } |
3974 | } | |
3975 | } | |
83b195e4 | 3976 | saved_errno = errno; /* sv_2mortal can realloc things */ |
b2ef6d44 | 3977 | sv_2mortal(namesv); |
a0d0e21e | 3978 | if (!tryrsfp) { |
533c011a | 3979 | if (PL_op->op_type == OP_REQUIRE) { |
83b195e4 | 3980 | if(saved_errno == EMFILE || saved_errno == EACCES) { |
c9d5e35e | 3981 | /* diag_listed_as: Can't locate %s */ |
e2ce0950 P |
3982 | DIE(aTHX_ "Can't locate %s: %s: %s", |
3983 | name, tryname, Strerror(saved_errno)); | |
e31de809 SP |
3984 | } else { |
3985 | if (namesv) { /* did we lookup @INC? */ | |
44f8325f | 3986 | AV * const ar = GvAVn(PL_incgv); |
c70927a6 | 3987 | SSize_t i; |
1e5f02b3 | 3988 | SV *const msg = newSVpvs_flags("", SVs_TEMP); |
c9d5e35e NC |
3989 | SV *const inc = newSVpvs_flags("", SVs_TEMP); |
3990 | for (i = 0; i <= AvFILL(ar); i++) { | |
3991 | sv_catpvs(inc, " "); | |
3992 | sv_catsv(inc, *av_fetch(ar, i, TRUE)); | |
3993 | } | |
f7ee53b5 PJ |
3994 | if (len >= 4 && memEQ(name + len - 3, ".pm", 4)) { |
3995 | const char *c, *e = name + len - 3; | |
3996 | sv_catpv(msg, " (you may need to install the "); | |
3997 | for (c = name; c < e; c++) { | |
3998 | if (*c == '/') { | |
46e2868e | 3999 | sv_catpvs(msg, "::"); |
f7ee53b5 PJ |
4000 | } |
4001 | else { | |
4002 | sv_catpvn(msg, c, 1); | |
4003 | } | |
4004 | } | |
4005 | sv_catpv(msg, " module)"); | |
4006 | } | |
4007 | else if (len >= 2 && memEQ(name + len - 2, ".h", 3)) { | |
4008 | sv_catpv(msg, " (change .h to .ph maybe?) (did you run h2ph?)"); | |
4009 | } | |
4010 | else if (len >= 3 && memEQ(name + len - 3, ".ph", 4)) { | |
4011 | sv_catpv(msg, " (did you run h2ph?)"); | |
4012 | } | |
c9d5e35e NC |
4013 | |
4014 | /* diag_listed_as: Can't locate %s */ | |
4015 | DIE(aTHX_ | |
f7ee53b5 PJ |
4016 | "Can't locate %s in @INC%" SVf " (@INC contains:%" SVf ")", |
4017 | name, msg, inc); | |
c9d5e35e | 4018 | } |
2683423c | 4019 | } |
c9d5e35e | 4020 | DIE(aTHX_ "Can't locate %s", name); |
a0d0e21e LW |
4021 | } |
4022 | ||
a3ff80c1 | 4023 | CLEAR_ERRSV(); |
a0d0e21e LW |
4024 | RETPUSHUNDEF; |
4025 | } | |
d8bfb8bd | 4026 | else |
93189314 | 4027 | SETERRNO(0, SS_NORMAL); |
a0d0e21e LW |
4028 | |
4029 | /* Assume success here to prevent recursive requirement. */ | |
238d24b4 | 4030 | /* name is never assigned to again, so len is still strlen(name) */ |
d3a4e64e | 4031 | /* Check whether a hook in @INC has already filled %INC */ |
44f8325f | 4032 | if (!hook_sv) { |
4492be7a | 4033 | (void)hv_store(GvHVn(PL_incgv), |
b2ef6d44 | 4034 | unixname, unixlen, newSVpv(tryname,0),0); |
44f8325f | 4035 | } else { |
4492be7a | 4036 | SV** const svp = hv_fetch(GvHVn(PL_incgv), unixname, unixlen, 0); |
44f8325f | 4037 | if (!svp) |
4492be7a JM |
4038 | (void)hv_store(GvHVn(PL_incgv), |
4039 | unixname, unixlen, SvREFCNT_inc_simple(hook_sv), 0 ); | |
d3a4e64e | 4040 | } |
a0d0e21e | 4041 | |
d343c3ef | 4042 | ENTER_with_name("eval"); |
a0d0e21e | 4043 | SAVETMPS; |
b2ef6d44 FC |
4044 | SAVECOPFILE_FREE(&PL_compiling); |
4045 | CopFILE_set(&PL_compiling, tryname); | |
8eaa0acf | 4046 | lex_start(NULL, tryrsfp, 0); |
e50aee73 | 4047 | |
34113e50 | 4048 | if (filter_sub || filter_cache) { |
4464f08e NC |
4049 | /* We can use the SvPV of the filter PVIO itself as our cache, rather |
4050 | than hanging another SV from it. In turn, filter_add() optionally | |
4051 | takes the SV to use as the filter (or creates a new SV if passed | |
4052 | NULL), so simply pass in whatever value filter_cache has. */ | |
9b7d7782 FC |
4053 | SV * const fc = filter_cache ? newSV(0) : NULL; |
4054 | SV *datasv; | |
4055 | if (fc) sv_copypv(fc, filter_cache); | |
4056 | datasv = filter_add(S_run_user_filter, fc); | |
bbed91b5 | 4057 | IoLINES(datasv) = filter_has_file; |
159b6efe NC |
4058 | IoTOP_GV(datasv) = MUTABLE_GV(filter_state); |
4059 | IoBOTTOM_GV(datasv) = MUTABLE_GV(filter_sub); | |
bbed91b5 KF |
4060 | } |
4061 | ||
4062 | /* switch to eval mode */ | |
a0d0e21e | 4063 | PUSHBLOCK(cx, CXt_EVAL, SP); |
6b75f042 | 4064 | PUSHEVAL(cx, name); |
f39bc417 | 4065 | cx->blk_eval.retop = PL_op->op_next; |
a0d0e21e | 4066 | |
57843af0 GS |
4067 | SAVECOPLINE(&PL_compiling); |
4068 | CopLINE_set(&PL_compiling, 0); | |
a0d0e21e LW |
4069 | |
4070 | PUTBACK; | |
6ec9efec | 4071 | |
104a8185 | 4072 | if (doeval(gimme, NULL, PL_curcop->cop_seq, NULL)) |
410be5db DM |
4073 | op = DOCATCH(PL_eval_start); |
4074 | else | |
4075 | op = PL_op->op_next; | |
bfed75c6 | 4076 | |
32aeab29 SM |
4077 | LOADED_FILE_PROBE(unixname); |
4078 | ||
6ec9efec | 4079 | return op; |
a0d0e21e LW |
4080 | } |
4081 | ||
996c9baa VP |
4082 | /* This is a op added to hold the hints hash for |
4083 | pp_entereval. The hash can be modified by the code | |
4084 | being eval'ed, so we return a copy instead. */ | |
4085 | ||
4086 | PP(pp_hintseval) | |
4087 | { | |
996c9baa | 4088 | dSP; |
defdfed5 | 4089 | mXPUSHs(MUTABLE_SV(hv_copy_hints_hv(MUTABLE_HV(cSVOP_sv)))); |
996c9baa VP |
4090 | RETURN; |
4091 | } | |
4092 | ||
4093 | ||
a0d0e21e LW |
4094 | PP(pp_entereval) |
4095 | { | |
20b7effb | 4096 | dSP; |
eb578fdb | 4097 | PERL_CONTEXT *cx; |
0d863452 | 4098 | SV *sv; |
890ce7af | 4099 | const I32 gimme = GIMME_V; |
fd06b02c | 4100 | const U32 was = PL_breakable_sub_gen; |
83ee9e09 | 4101 | char tbuf[TYPE_DIGITS(long) + 12]; |
78da7625 | 4102 | bool saved_delete = FALSE; |
83ee9e09 | 4103 | char *tmpbuf = tbuf; |
a0d0e21e | 4104 | STRLEN len; |
a3985cdc | 4105 | CV* runcv; |
0abcdfa4 | 4106 | U32 seq, lex_flags = 0; |
c445ea15 | 4107 | HV *saved_hh = NULL; |
60d63348 | 4108 | const bool bytes = PL_op->op_private & OPpEVAL_BYTES; |
e389bba9 | 4109 | |
0d863452 | 4110 | if (PL_op->op_private & OPpEVAL_HAS_HH) { |
85fbaab2 | 4111 | saved_hh = MUTABLE_HV(SvREFCNT_inc(POPs)); |
0d863452 | 4112 | } |
bc344123 FC |
4113 | else if (PL_hints & HINT_LOCALIZE_HH || ( |
4114 | PL_op->op_private & OPpEVAL_COPHH | |
4115 | && PL_curcop->cop_hints & HINT_LOCALIZE_HH | |
4116 | )) { | |
7d789282 FC |
4117 | saved_hh = cop_hints_2hv(PL_curcop, 0); |
4118 | hv_magic(saved_hh, NULL, PERL_MAGIC_hints); | |
4119 | } | |
0d863452 | 4120 | sv = POPs; |
895b760f DM |
4121 | if (!SvPOK(sv)) { |
4122 | /* make sure we've got a plain PV (no overload etc) before testing | |
4123 | * for taint. Making a copy here is probably overkill, but better | |
4124 | * safe than sorry */ | |
0479a84a NC |
4125 | STRLEN len; |
4126 | const char * const p = SvPV_const(sv, len); | |
4127 | ||
4128 | sv = newSVpvn_flags(p, len, SVs_TEMP | SvUTF8(sv)); | |
0abcdfa4 | 4129 | lex_flags |= LEX_START_COPIED; |
7d789282 | 4130 | |
60d63348 | 4131 | if (bytes && SvUTF8(sv)) |
7d789282 FC |
4132 | SvPVbyte_force(sv, len); |
4133 | } | |
60d63348 | 4134 | else if (bytes && SvUTF8(sv)) { |
e1fa07e3 | 4135 | /* Don't modify someone else's scalar */ |
7d789282 FC |
4136 | STRLEN len; |
4137 | sv = newSVsv(sv); | |
5cefc8c1 | 4138 | (void)sv_2mortal(sv); |
7d789282 | 4139 | SvPVbyte_force(sv,len); |
0abcdfa4 | 4140 | lex_flags |= LEX_START_COPIED; |
895b760f | 4141 | } |
a0d0e21e | 4142 | |
af2d3def | 4143 | TAINT_IF(SvTAINTED(sv)); |
748a9306 | 4144 | TAINT_PROPER("eval"); |
a0d0e21e | 4145 | |
d343c3ef | 4146 | ENTER_with_name("eval"); |
0abcdfa4 | 4147 | lex_start(sv, NULL, lex_flags | (PL_op->op_private & OPpEVAL_UNICODE |
60d63348 FC |
4148 | ? LEX_IGNORE_UTF8_HINTS |
4149 | : bytes ? LEX_EVALBYTES : LEX_START_SAME_FILTER | |
0abcdfa4 | 4150 | ) |
60d63348 | 4151 | ); |
748a9306 | 4152 | SAVETMPS; |
ac27b0f5 | 4153 | |
a0d0e21e LW |
4154 | /* switch to eval mode */ |
4155 | ||
83ee9e09 | 4156 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
8b38226b AL |
4157 | SV * const temp_sv = sv_newmortal(); |
4158 | Perl_sv_setpvf(aTHX_ temp_sv, "_<(eval %lu)[%s:%"IVdf"]", | |
83ee9e09 GS |
4159 | (unsigned long)++PL_evalseq, |
4160 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
8b38226b AL |
4161 | tmpbuf = SvPVX(temp_sv); |
4162 | len = SvCUR(temp_sv); | |
83ee9e09 GS |
4163 | } |
4164 | else | |
d9fad198 | 4165 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(eval %lu)", (unsigned long)++PL_evalseq); |
f4dd75d9 | 4166 | SAVECOPFILE_FREE(&PL_compiling); |
57843af0 | 4167 | CopFILE_set(&PL_compiling, tmpbuf+2); |
f4dd75d9 | 4168 | SAVECOPLINE(&PL_compiling); |
57843af0 | 4169 | CopLINE_set(&PL_compiling, 1); |
d819b83a DM |
4170 | /* special case: an eval '' executed within the DB package gets lexically |
4171 | * placed in the first non-DB CV rather than the current CV - this | |
4172 | * allows the debugger to execute code, find lexicals etc, in the | |
4173 | * scope of the code being debugged. Passing &seq gets find_runcv | |
4174 | * to do the dirty work for us */ | |
4175 | runcv = find_runcv(&seq); | |
a0d0e21e | 4176 | |
6b35e009 | 4177 | PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP); |
6b75f042 | 4178 | PUSHEVAL(cx, 0); |
f39bc417 | 4179 | cx->blk_eval.retop = PL_op->op_next; |
a0d0e21e LW |
4180 | |
4181 | /* prepare to compile string */ | |
4182 | ||
c7a622b3 | 4183 | if (PERLDB_LINE_OR_SAVESRC && PL_curstash != PL_debstash) |
bdc0bf6f | 4184 | save_lines(CopFILEAV(&PL_compiling), PL_parser->linestr); |
78da7625 | 4185 | else { |
c8cb8d55 FC |
4186 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
4187 | deleting the eval's FILEGV from the stash before gv_check() runs | |
4188 | (i.e. before run-time proper). To work around the coredump that | |
4189 | ensues, we always turn GvMULTI_on for any globals that were | |
4190 | introduced within evals. See force_ident(). GSAR 96-10-12 */ | |
78da7625 FC |
4191 | char *const safestr = savepvn(tmpbuf, len); |
4192 | SAVEDELETE(PL_defstash, safestr, len); | |
4193 | saved_delete = TRUE; | |
4194 | } | |
4195 | ||
a0d0e21e | 4196 | PUTBACK; |
f9bddea7 | 4197 | |
104a8185 | 4198 | if (doeval(gimme, runcv, seq, saved_hh)) { |
f9bddea7 | 4199 | if (was != PL_breakable_sub_gen /* Some subs defined here. */ |
c7a622b3 | 4200 | ? PERLDB_LINE_OR_SAVESRC |
f9bddea7 NC |
4201 | : PERLDB_SAVESRC_NOSUBS) { |
4202 | /* Retain the filegv we created. */ | |
78da7625 | 4203 | } else if (!saved_delete) { |
f9bddea7 NC |
4204 | char *const safestr = savepvn(tmpbuf, len); |
4205 | SAVEDELETE(PL_defstash, safestr, len); | |
4206 | } | |
4207 | return DOCATCH(PL_eval_start); | |
4208 | } else { | |
486ec47a | 4209 | /* We have already left the scope set up earlier thanks to the LEAVE |
f9bddea7 | 4210 | in doeval(). */ |
eb044b10 | 4211 | if (was != PL_breakable_sub_gen /* Some subs defined here. */ |
c7a622b3 | 4212 | ? PERLDB_LINE_OR_SAVESRC |
eb044b10 | 4213 | : PERLDB_SAVESRC_INVALID) { |
f9bddea7 | 4214 | /* Retain the filegv we created. */ |
7857f360 | 4215 | } else if (!saved_delete) { |
f9bddea7 NC |
4216 | (void)hv_delete(PL_defstash, tmpbuf, len, G_DISCARD); |
4217 | } | |
4218 | return PL_op->op_next; | |
4219 | } | |
a0d0e21e LW |
4220 | } |
4221 | ||
4222 | PP(pp_leaveeval) | |
4223 | { | |
20b7effb | 4224 | dSP; |
a0d0e21e LW |
4225 | SV **newsp; |
4226 | PMOP *newpm; | |
4227 | I32 gimme; | |
eb578fdb | 4228 | PERL_CONTEXT *cx; |
a0d0e21e LW |
4229 | OP *retop; |
4230 | I32 optype; | |
b6494f15 | 4231 | SV *namesv; |
676a678a | 4232 | CV *evalcv; |
7051b8c3 DM |
4233 | /* grab this value before POPEVAL restores old PL_in_eval */ |
4234 | bool keep = cBOOL(PL_in_eval & EVAL_KEEPERR); | |
a0d0e21e | 4235 | |
011c3814 | 4236 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
4237 | POPBLOCK(cx,newpm); |
4238 | POPEVAL(cx); | |
b6494f15 | 4239 | namesv = cx->blk_eval.old_namesv; |
f39bc417 | 4240 | retop = cx->blk_eval.retop; |
676a678a | 4241 | evalcv = cx->blk_eval.cv; |
a0d0e21e | 4242 | |
2fc507dc | 4243 | SP = leave_common((gimme == G_VOID) ? SP : newsp, SP, newsp, |
2ec7f6f2 | 4244 | gimme, SVs_TEMP, FALSE); |
3280af22 | 4245 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 4246 | |
4fdae800 | 4247 | #ifdef DEBUGGING |
676a678a | 4248 | assert(CvDEPTH(evalcv) == 1); |
4fdae800 | 4249 | #endif |
676a678a | 4250 | CvDEPTH(evalcv) = 0; |
4fdae800 | 4251 | |
1ce6579f | 4252 | if (optype == OP_REQUIRE && |
924508f0 | 4253 | !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp)) |
54310121 | 4254 | { |
1ce6579f | 4255 | /* Unassume the success we assumed earlier. */ |
b6494f15 | 4256 | (void)hv_delete(GvHVn(PL_incgv), |
ecad31f0 | 4257 | SvPVX_const(namesv), |
c60dbbc3 | 4258 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 | 4259 | G_DISCARD); |
81d52ecd | 4260 | Perl_die(aTHX_ "%"SVf" did not return a true value", SVfARG(namesv)); |
a25b5927 | 4261 | NOT_REACHED; /* NOTREACHED */ |
c5df3096 | 4262 | /* die_unwind() did LEAVE, or we won't be here */ |
f46d017c GS |
4263 | } |
4264 | else { | |
d343c3ef | 4265 | LEAVE_with_name("eval"); |
7051b8c3 | 4266 | if (!keep) |
ab69dbc2 | 4267 | CLEAR_ERRSV(); |
a0d0e21e | 4268 | } |
a0d0e21e LW |
4269 | |
4270 | RETURNOP(retop); | |
4271 | } | |
4272 | ||
edb2152a NC |
4273 | /* Common code for Perl_call_sv and Perl_fold_constants, put here to keep it |
4274 | close to the related Perl_create_eval_scope. */ | |
4275 | void | |
4276 | Perl_delete_eval_scope(pTHX) | |
a0d0e21e | 4277 | { |
edb2152a NC |
4278 | SV **newsp; |
4279 | PMOP *newpm; | |
4280 | I32 gimme; | |
eb578fdb | 4281 | PERL_CONTEXT *cx; |
edb2152a NC |
4282 | I32 optype; |
4283 | ||
4284 | POPBLOCK(cx,newpm); | |
4285 | POPEVAL(cx); | |
4286 | PL_curpm = newpm; | |
d343c3ef | 4287 | LEAVE_with_name("eval_scope"); |
edb2152a NC |
4288 | PERL_UNUSED_VAR(newsp); |
4289 | PERL_UNUSED_VAR(gimme); | |
4290 | PERL_UNUSED_VAR(optype); | |
4291 | } | |
a0d0e21e | 4292 | |
edb2152a NC |
4293 | /* Common-ish code salvaged from Perl_call_sv and pp_entertry, because it was |
4294 | also needed by Perl_fold_constants. */ | |
4295 | PERL_CONTEXT * | |
4296 | Perl_create_eval_scope(pTHX_ U32 flags) | |
4297 | { | |
4298 | PERL_CONTEXT *cx; | |
4299 | const I32 gimme = GIMME_V; | |
4300 | ||
d343c3ef | 4301 | ENTER_with_name("eval_scope"); |
a0d0e21e LW |
4302 | SAVETMPS; |
4303 | ||
edb2152a | 4304 | PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); |
6b75f042 | 4305 | PUSHEVAL(cx, 0); |
a0d0e21e | 4306 | |
faef0170 | 4307 | PL_in_eval = EVAL_INEVAL; |
edb2152a NC |
4308 | if (flags & G_KEEPERR) |
4309 | PL_in_eval |= EVAL_KEEPERR; | |
ab69dbc2 RGS |
4310 | else |
4311 | CLEAR_ERRSV(); | |
edb2152a NC |
4312 | if (flags & G_FAKINGEVAL) { |
4313 | PL_eval_root = PL_op; /* Only needed so that goto works right. */ | |
4314 | } | |
4315 | return cx; | |
4316 | } | |
4317 | ||
4318 | PP(pp_entertry) | |
4319 | { | |
df528165 | 4320 | PERL_CONTEXT * const cx = create_eval_scope(0); |
edb2152a | 4321 | cx->blk_eval.retop = cLOGOP->op_other->op_next; |
533c011a | 4322 | return DOCATCH(PL_op->op_next); |
a0d0e21e LW |
4323 | } |
4324 | ||
4325 | PP(pp_leavetry) | |
4326 | { | |
20b7effb | 4327 | dSP; |
a0d0e21e LW |
4328 | SV **newsp; |
4329 | PMOP *newpm; | |
4330 | I32 gimme; | |
eb578fdb | 4331 | PERL_CONTEXT *cx; |
a0d0e21e | 4332 | I32 optype; |
334ea179 | 4333 | OP *retop; |
a0d0e21e | 4334 | |
011c3814 | 4335 | PERL_ASYNC_CHECK(); |
a0d0e21e | 4336 | POPBLOCK(cx,newpm); |
334ea179 | 4337 | retop = cx->blk_eval.retop; |
a0d0e21e | 4338 | POPEVAL(cx); |
9d4ba2ae | 4339 | PERL_UNUSED_VAR(optype); |
a0d0e21e | 4340 | |
2fc507dc | 4341 | SP = leave_common(newsp, SP, newsp, gimme, |
2ec7f6f2 | 4342 | SVs_PADTMP|SVs_TEMP, FALSE); |
3280af22 | 4343 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 4344 | |
d343c3ef | 4345 | LEAVE_with_name("eval_scope"); |
ab69dbc2 | 4346 | CLEAR_ERRSV(); |
334ea179 | 4347 | RETURNOP(retop); |
a0d0e21e LW |
4348 | } |
4349 | ||
0d863452 RH |
4350 | PP(pp_entergiven) |
4351 | { | |
20b7effb | 4352 | dSP; |
eb578fdb | 4353 | PERL_CONTEXT *cx; |
0d863452 RH |
4354 | const I32 gimme = GIMME_V; |
4355 | ||
d343c3ef | 4356 | ENTER_with_name("given"); |
0d863452 RH |
4357 | SAVETMPS; |
4358 | ||
b5a64814 FC |
4359 | if (PL_op->op_targ) { |
4360 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); | |
4361 | SvREFCNT_dec(PAD_SVl(PL_op->op_targ)); | |
4362 | PAD_SVl(PL_op->op_targ) = SvREFCNT_inc_NN(POPs); | |
4363 | } | |
4364 | else { | |
4365 | SAVE_DEFSV; | |
4366 | DEFSV_set(POPs); | |
4367 | } | |
0d863452 RH |
4368 | |
4369 | PUSHBLOCK(cx, CXt_GIVEN, SP); | |
4370 | PUSHGIVEN(cx); | |
4371 | ||
4372 | RETURN; | |
4373 | } | |
4374 | ||
4375 | PP(pp_leavegiven) | |
4376 | { | |
20b7effb | 4377 | dSP; |
eb578fdb | 4378 | PERL_CONTEXT *cx; |
0d863452 RH |
4379 | I32 gimme; |
4380 | SV **newsp; | |
4381 | PMOP *newpm; | |
96a5add6 | 4382 | PERL_UNUSED_CONTEXT; |
0d863452 RH |
4383 | |
4384 | POPBLOCK(cx,newpm); | |
4385 | assert(CxTYPE(cx) == CXt_GIVEN); | |
0d863452 | 4386 | |
2fc507dc | 4387 | SP = leave_common(newsp, SP, newsp, gimme, |
2ec7f6f2 | 4388 | SVs_PADTMP|SVs_TEMP, FALSE); |
25b991bf | 4389 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
0d863452 | 4390 | |
d343c3ef | 4391 | LEAVE_with_name("given"); |
25b991bf | 4392 | RETURN; |
0d863452 RH |
4393 | } |
4394 | ||
4395 | /* Helper routines used by pp_smartmatch */ | |
4136a0f7 | 4396 | STATIC PMOP * |
84679df5 | 4397 | S_make_matcher(pTHX_ REGEXP *re) |
0d863452 RH |
4398 | { |
4399 | PMOP *matcher = (PMOP *) newPMOP(OP_MATCH, OPf_WANT_SCALAR | OPf_STACKED); | |
7918f24d NC |
4400 | |
4401 | PERL_ARGS_ASSERT_MAKE_MATCHER; | |
4402 | ||
d6106309 | 4403 | PM_SETRE(matcher, ReREFCNT_inc(re)); |
7918f24d | 4404 | |
0d863452 | 4405 | SAVEFREEOP((OP *) matcher); |
d343c3ef | 4406 | ENTER_with_name("matcher"); SAVETMPS; |
0d863452 RH |
4407 | SAVEOP(); |
4408 | return matcher; | |
4409 | } | |
4410 | ||
4136a0f7 | 4411 | STATIC bool |
0d863452 RH |
4412 | S_matcher_matches_sv(pTHX_ PMOP *matcher, SV *sv) |
4413 | { | |
4414 | dSP; | |
72e5fb63 | 4415 | bool result; |
7918f24d NC |
4416 | |
4417 | PERL_ARGS_ASSERT_MATCHER_MATCHES_SV; | |
0d863452 RH |
4418 | |
4419 | PL_op = (OP *) matcher; | |
4420 | XPUSHs(sv); | |
4421 | PUTBACK; | |
897d3989 | 4422 | (void) Perl_pp_match(aTHX); |
0d863452 | 4423 | SPAGAIN; |
72e5fb63 TC |
4424 | result = SvTRUEx(POPs); |
4425 | PUTBACK; | |
4426 | ||
4427 | return result; | |
0d863452 RH |
4428 | } |
4429 | ||
4136a0f7 | 4430 | STATIC void |
0d863452 RH |
4431 | S_destroy_matcher(pTHX_ PMOP *matcher) |
4432 | { | |
7918f24d | 4433 | PERL_ARGS_ASSERT_DESTROY_MATCHER; |
0d863452 | 4434 | PERL_UNUSED_ARG(matcher); |
7918f24d | 4435 | |
0d863452 | 4436 | FREETMPS; |
d343c3ef | 4437 | LEAVE_with_name("matcher"); |
0d863452 RH |
4438 | } |
4439 | ||
4440 | /* Do a smart match */ | |
4441 | PP(pp_smartmatch) | |
4442 | { | |
d7c0d282 | 4443 | DEBUG_M(Perl_deb(aTHX_ "Starting smart match resolution\n")); |
be88a5c3 | 4444 | return do_smartmatch(NULL, NULL, 0); |
0d863452 RH |
4445 | } |
4446 | ||
4b021f5f RGS |
4447 | /* This version of do_smartmatch() implements the |
4448 | * table of smart matches that is found in perlsyn. | |
0d863452 | 4449 | */ |
4136a0f7 | 4450 | STATIC OP * |
be88a5c3 | 4451 | S_do_smartmatch(pTHX_ HV *seen_this, HV *seen_other, const bool copied) |
0d863452 RH |
4452 | { |
4453 | dSP; | |
4454 | ||
41e726ac | 4455 | bool object_on_left = FALSE; |
0d863452 RH |
4456 | SV *e = TOPs; /* e is for 'expression' */ |
4457 | SV *d = TOPm1s; /* d is for 'default', as in PL_defgv */ | |
a566f585 | 4458 | |
6f1401dc DM |
4459 | /* Take care only to invoke mg_get() once for each argument. |
4460 | * Currently we do this by copying the SV if it's magical. */ | |
4461 | if (d) { | |
be88a5c3 | 4462 | if (!copied && SvGMAGICAL(d)) |
6f1401dc DM |
4463 | d = sv_mortalcopy(d); |
4464 | } | |
4465 | else | |
4466 | d = &PL_sv_undef; | |
4467 | ||
4468 | assert(e); | |
4469 | if (SvGMAGICAL(e)) | |
4470 | e = sv_mortalcopy(e); | |
4471 | ||
2c9d2554 | 4472 | /* First of all, handle overload magic of the rightmost argument */ |
6d743019 | 4473 | if (SvAMAGIC(e)) { |
d7c0d282 DM |
4474 | SV * tmpsv; |
4475 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Object\n")); | |
4476 | DEBUG_M(Perl_deb(aTHX_ " attempting overload\n")); | |
4477 | ||
b900a653 | 4478 | tmpsv = amagic_call(d, e, smart_amg, AMGf_noleft); |
7c41e62e RGS |
4479 | if (tmpsv) { |
4480 | SPAGAIN; | |
4481 | (void)POPs; | |
4482 | SETs(tmpsv); | |
4483 | RETURN; | |
4484 | } | |
d7c0d282 | 4485 | DEBUG_M(Perl_deb(aTHX_ " failed to run overload method; continuing...\n")); |
7c41e62e | 4486 | } |
62ec5f58 | 4487 | |
0d863452 | 4488 | SP -= 2; /* Pop the values */ |
e8fe1b7c | 4489 | PUTBACK; |
0d863452 | 4490 | |
b0138e99 | 4491 | /* ~~ undef */ |
62ec5f58 | 4492 | if (!SvOK(e)) { |
d7c0d282 | 4493 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-undef\n")); |
62ec5f58 | 4494 | if (SvOK(d)) |
33570f8b RGS |
4495 | RETPUSHNO; |
4496 | else | |
62ec5f58 | 4497 | RETPUSHYES; |
33570f8b | 4498 | } |
e67b97bd | 4499 | |
4b523e79 | 4500 | if (SvROK(e) && SvOBJECT(SvRV(e)) && (SvTYPE(SvRV(e)) != SVt_REGEXP)) { |
d7c0d282 | 4501 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Object\n")); |
62ec5f58 | 4502 | Perl_croak(aTHX_ "Smart matching a non-overloaded object breaks encapsulation"); |
d7c0d282 | 4503 | } |
4b523e79 | 4504 | if (SvROK(d) && SvOBJECT(SvRV(d)) && (SvTYPE(SvRV(d)) != SVt_REGEXP)) |
41e726ac | 4505 | object_on_left = TRUE; |
62ec5f58 | 4506 | |
b0138e99 | 4507 | /* ~~ sub */ |
a4a197da | 4508 | if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVCV) { |
0d863452 | 4509 | I32 c; |
41e726ac RGS |
4510 | if (object_on_left) { |
4511 | goto sm_any_sub; /* Treat objects like scalars */ | |
4512 | } | |
4513 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
a4a197da RGS |
4514 | /* Test sub truth for each key */ |
4515 | HE *he; | |
4516 | bool andedresults = TRUE; | |
4517 | HV *hv = (HV*) SvRV(d); | |
168ff818 | 4518 | I32 numkeys = hv_iterinit(hv); |
d7c0d282 | 4519 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-CodeRef\n")); |
168ff818 | 4520 | if (numkeys == 0) |
07edf497 | 4521 | RETPUSHYES; |
a4a197da | 4522 | while ( (he = hv_iternext(hv)) ) { |
d7c0d282 | 4523 | DEBUG_M(Perl_deb(aTHX_ " testing hash key...\n")); |
d343c3ef | 4524 | ENTER_with_name("smartmatch_hash_key_test"); |
a4a197da RGS |
4525 | SAVETMPS; |
4526 | PUSHMARK(SP); | |
4527 | PUSHs(hv_iterkeysv(he)); | |
4528 | PUTBACK; | |
4529 | c = call_sv(e, G_SCALAR); | |
4530 | SPAGAIN; | |
4531 | if (c == 0) | |
4532 | andedresults = FALSE; | |
4533 | else | |
4534 | andedresults = SvTRUEx(POPs) && andedresults; | |
4535 | FREETMPS; | |
d343c3ef | 4536 | LEAVE_with_name("smartmatch_hash_key_test"); |
a4a197da RGS |
4537 | } |
4538 | if (andedresults) | |
4539 | RETPUSHYES; | |
4540 | else | |
4541 | RETPUSHNO; | |
4542 | } | |
4543 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4544 | /* Test sub truth for each element */ | |
c70927a6 | 4545 | SSize_t i; |
a4a197da RGS |
4546 | bool andedresults = TRUE; |
4547 | AV *av = (AV*) SvRV(d); | |
b9f2b683 | 4548 | const I32 len = av_tindex(av); |
d7c0d282 | 4549 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-CodeRef\n")); |
168ff818 | 4550 | if (len == -1) |
07edf497 | 4551 | RETPUSHYES; |
a4a197da RGS |
4552 | for (i = 0; i <= len; ++i) { |
4553 | SV * const * const svp = av_fetch(av, i, FALSE); | |
d7c0d282 | 4554 | DEBUG_M(Perl_deb(aTHX_ " testing array element...\n")); |
d343c3ef | 4555 | ENTER_with_name("smartmatch_array_elem_test"); |
a4a197da RGS |
4556 | SAVETMPS; |
4557 | PUSHMARK(SP); | |
4558 | if (svp) | |
4559 | PUSHs(*svp); | |
4560 | PUTBACK; | |
4561 | c = call_sv(e, G_SCALAR); | |
4562 | SPAGAIN; | |
4563 | if (c == 0) | |
4564 | andedresults = FALSE; | |
4565 | else | |
4566 | andedresults = SvTRUEx(POPs) && andedresults; | |
4567 | FREETMPS; | |
d343c3ef | 4568 | LEAVE_with_name("smartmatch_array_elem_test"); |
a4a197da RGS |
4569 | } |
4570 | if (andedresults) | |
4571 | RETPUSHYES; | |
4572 | else | |
4573 | RETPUSHNO; | |
4574 | } | |
4575 | else { | |
41e726ac | 4576 | sm_any_sub: |
d7c0d282 | 4577 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-CodeRef\n")); |
d343c3ef | 4578 | ENTER_with_name("smartmatch_coderef"); |
a4a197da RGS |
4579 | SAVETMPS; |
4580 | PUSHMARK(SP); | |
4581 | PUSHs(d); | |
4582 | PUTBACK; | |
4583 | c = call_sv(e, G_SCALAR); | |
4584 | SPAGAIN; | |
4585 | if (c == 0) | |
4586 | PUSHs(&PL_sv_no); | |
4587 | else if (SvTEMP(TOPs)) | |
4588 | SvREFCNT_inc_void(TOPs); | |
4589 | FREETMPS; | |
d343c3ef | 4590 | LEAVE_with_name("smartmatch_coderef"); |
a4a197da RGS |
4591 | RETURN; |
4592 | } | |
0d863452 | 4593 | } |
b0138e99 | 4594 | /* ~~ %hash */ |
61a621c6 | 4595 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVHV) { |
41e726ac RGS |
4596 | if (object_on_left) { |
4597 | goto sm_any_hash; /* Treat objects like scalars */ | |
4598 | } | |
4599 | else if (!SvOK(d)) { | |
d7c0d282 | 4600 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Hash ($a undef)\n")); |
61a621c6 RGS |
4601 | RETPUSHNO; |
4602 | } | |
4603 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
0d863452 RH |
4604 | /* Check that the key-sets are identical */ |
4605 | HE *he; | |
61a621c6 | 4606 | HV *other_hv = MUTABLE_HV(SvRV(d)); |
6bb3f245 DD |
4607 | bool tied; |
4608 | bool other_tied; | |
0d863452 RH |
4609 | U32 this_key_count = 0, |
4610 | other_key_count = 0; | |
33ed63a2 | 4611 | HV *hv = MUTABLE_HV(SvRV(e)); |
d7c0d282 DM |
4612 | |
4613 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Hash\n")); | |
0d863452 | 4614 | /* Tied hashes don't know how many keys they have. */ |
6bb3f245 DD |
4615 | tied = cBOOL(SvTIED_mg((SV*)hv, PERL_MAGIC_tied)); |
4616 | other_tied = cBOOL(SvTIED_mg((const SV *)other_hv, PERL_MAGIC_tied)); | |
4617 | if (!tied ) { | |
4618 | if(other_tied) { | |
4619 | /* swap HV sides */ | |
4620 | HV * const temp = other_hv; | |
4621 | other_hv = hv; | |
4622 | hv = temp; | |
4623 | tied = TRUE; | |
4624 | other_tied = FALSE; | |
4625 | } | |
4626 | else if(HvUSEDKEYS((const HV *) hv) != HvUSEDKEYS(other_hv)) | |
4627 | RETPUSHNO; | |
0d863452 | 4628 | } |
0d863452 RH |
4629 | |
4630 | /* The hashes have the same number of keys, so it suffices | |
4631 | to check that one is a subset of the other. */ | |
33ed63a2 RGS |
4632 | (void) hv_iterinit(hv); |
4633 | while ( (he = hv_iternext(hv)) ) { | |
b15feb55 | 4634 | SV *key = hv_iterkeysv(he); |
d7c0d282 DM |
4635 | |
4636 | DEBUG_M(Perl_deb(aTHX_ " comparing hash key...\n")); | |
0d863452 RH |
4637 | ++ this_key_count; |
4638 | ||
b15feb55 | 4639 | if(!hv_exists_ent(other_hv, key, 0)) { |
33ed63a2 | 4640 | (void) hv_iterinit(hv); /* reset iterator */ |
0d863452 RH |
4641 | RETPUSHNO; |
4642 | } | |
4643 | } | |
4644 | ||
4645 | if (other_tied) { | |
4646 | (void) hv_iterinit(other_hv); | |
4647 | while ( hv_iternext(other_hv) ) | |
4648 | ++other_key_count; | |
4649 | } | |
4650 | else | |
4651 | other_key_count = HvUSEDKEYS(other_hv); | |
4652 | ||
4653 | if (this_key_count != other_key_count) | |
4654 | RETPUSHNO; | |
4655 | else | |
4656 | RETPUSHYES; | |
4657 | } | |
61a621c6 RGS |
4658 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { |
4659 | AV * const other_av = MUTABLE_AV(SvRV(d)); | |
b9f2b683 | 4660 | const SSize_t other_len = av_tindex(other_av) + 1; |
c70927a6 | 4661 | SSize_t i; |
33ed63a2 | 4662 | HV *hv = MUTABLE_HV(SvRV(e)); |
71b0fb34 | 4663 | |
d7c0d282 | 4664 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Hash\n")); |
71b0fb34 | 4665 | for (i = 0; i < other_len; ++i) { |
c445ea15 | 4666 | SV ** const svp = av_fetch(other_av, i, FALSE); |
d7c0d282 | 4667 | DEBUG_M(Perl_deb(aTHX_ " checking for key existence...\n")); |
71b0fb34 | 4668 | if (svp) { /* ??? When can this not happen? */ |
b15feb55 | 4669 | if (hv_exists_ent(hv, *svp, 0)) |
71b0fb34 DK |
4670 | RETPUSHYES; |
4671 | } | |
0d863452 | 4672 | } |
71b0fb34 | 4673 | RETPUSHNO; |
0d863452 | 4674 | } |
a566f585 | 4675 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) { |
d7c0d282 | 4676 | DEBUG_M(Perl_deb(aTHX_ " applying rule Regex-Hash\n")); |
ea0c2dbd RGS |
4677 | sm_regex_hash: |
4678 | { | |
4679 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(d)); | |
4680 | HE *he; | |
4681 | HV *hv = MUTABLE_HV(SvRV(e)); | |
4682 | ||
4683 | (void) hv_iterinit(hv); | |
4684 | while ( (he = hv_iternext(hv)) ) { | |
d7c0d282 | 4685 | DEBUG_M(Perl_deb(aTHX_ " testing key against pattern...\n")); |
e8fe1b7c | 4686 | PUTBACK; |
ea0c2dbd | 4687 | if (matcher_matches_sv(matcher, hv_iterkeysv(he))) { |
e8fe1b7c | 4688 | SPAGAIN; |
ea0c2dbd RGS |
4689 | (void) hv_iterinit(hv); |
4690 | destroy_matcher(matcher); | |
4691 | RETPUSHYES; | |
4692 | } | |
e8fe1b7c | 4693 | SPAGAIN; |
0d863452 | 4694 | } |
ea0c2dbd RGS |
4695 | destroy_matcher(matcher); |
4696 | RETPUSHNO; | |
0d863452 | 4697 | } |
0d863452 RH |
4698 | } |
4699 | else { | |
41e726ac | 4700 | sm_any_hash: |
d7c0d282 | 4701 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Hash\n")); |
61a621c6 | 4702 | if (hv_exists_ent(MUTABLE_HV(SvRV(e)), d, 0)) |
0d863452 RH |
4703 | RETPUSHYES; |
4704 | else | |
4705 | RETPUSHNO; | |
4706 | } | |
4707 | } | |
b0138e99 RGS |
4708 | /* ~~ @array */ |
4709 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVAV) { | |
41e726ac RGS |
4710 | if (object_on_left) { |
4711 | goto sm_any_array; /* Treat objects like scalars */ | |
4712 | } | |
4713 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
b0138e99 | 4714 | AV * const other_av = MUTABLE_AV(SvRV(e)); |
b9f2b683 | 4715 | const SSize_t other_len = av_tindex(other_av) + 1; |
c70927a6 | 4716 | SSize_t i; |
b0138e99 | 4717 | |
d7c0d282 | 4718 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Array\n")); |
b0138e99 RGS |
4719 | for (i = 0; i < other_len; ++i) { |
4720 | SV ** const svp = av_fetch(other_av, i, FALSE); | |
d7c0d282 DM |
4721 | |
4722 | DEBUG_M(Perl_deb(aTHX_ " testing for key existence...\n")); | |
b0138e99 | 4723 | if (svp) { /* ??? When can this not happen? */ |
b15feb55 | 4724 | if (hv_exists_ent(MUTABLE_HV(SvRV(d)), *svp, 0)) |
b0138e99 RGS |
4725 | RETPUSHYES; |
4726 | } | |
4727 | } | |
4728 | RETPUSHNO; | |
4729 | } | |
4730 | if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4731 | AV *other_av = MUTABLE_AV(SvRV(d)); | |
d7c0d282 | 4732 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Array\n")); |
b9f2b683 | 4733 | if (av_tindex(MUTABLE_AV(SvRV(e))) != av_tindex(other_av)) |
0d863452 RH |
4734 | RETPUSHNO; |
4735 | else { | |
c70927a6 | 4736 | SSize_t i; |
b9f2b683 | 4737 | const SSize_t other_len = av_tindex(other_av); |
0d863452 | 4738 | |
a0714e2c | 4739 | if (NULL == seen_this) { |
0d863452 | 4740 | seen_this = newHV(); |
ad64d0ec | 4741 | (void) sv_2mortal(MUTABLE_SV(seen_this)); |
0d863452 | 4742 | } |
a0714e2c | 4743 | if (NULL == seen_other) { |
6bc991bf | 4744 | seen_other = newHV(); |
ad64d0ec | 4745 | (void) sv_2mortal(MUTABLE_SV(seen_other)); |
0d863452 RH |
4746 | } |
4747 | for(i = 0; i <= other_len; ++i) { | |
b0138e99 | 4748 | SV * const * const this_elem = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); |
c445ea15 AL |
4749 | SV * const * const other_elem = av_fetch(other_av, i, FALSE); |
4750 | ||
0d863452 | 4751 | if (!this_elem || !other_elem) { |
69c3dccf RGS |
4752 | if ((this_elem && SvOK(*this_elem)) |
4753 | || (other_elem && SvOK(*other_elem))) | |
0d863452 RH |
4754 | RETPUSHNO; |
4755 | } | |
365c4e3d RGS |
4756 | else if (hv_exists_ent(seen_this, |
4757 | sv_2mortal(newSViv(PTR2IV(*this_elem))), 0) || | |
4758 | hv_exists_ent(seen_other, | |
4759 | sv_2mortal(newSViv(PTR2IV(*other_elem))), 0)) | |
0d863452 RH |
4760 | { |
4761 | if (*this_elem != *other_elem) | |
4762 | RETPUSHNO; | |
4763 | } | |
4764 | else { | |
04fe65b0 RGS |
4765 | (void)hv_store_ent(seen_this, |
4766 | sv_2mortal(newSViv(PTR2IV(*this_elem))), | |
4767 | &PL_sv_undef, 0); | |
4768 | (void)hv_store_ent(seen_other, | |
4769 | sv_2mortal(newSViv(PTR2IV(*other_elem))), | |
4770 | &PL_sv_undef, 0); | |
0d863452 | 4771 | PUSHs(*other_elem); |
a566f585 | 4772 | PUSHs(*this_elem); |
0d863452 RH |
4773 | |
4774 | PUTBACK; | |
d7c0d282 | 4775 | DEBUG_M(Perl_deb(aTHX_ " recursively comparing array element...\n")); |
be88a5c3 | 4776 | (void) do_smartmatch(seen_this, seen_other, 0); |
0d863452 | 4777 | SPAGAIN; |
d7c0d282 | 4778 | DEBUG_M(Perl_deb(aTHX_ " recursion finished\n")); |
0d863452 RH |
4779 | |
4780 | if (!SvTRUEx(POPs)) | |
4781 | RETPUSHNO; | |
4782 | } | |
4783 | } | |
4784 | RETPUSHYES; | |
4785 | } | |
4786 | } | |
a566f585 | 4787 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) { |
d7c0d282 | 4788 | DEBUG_M(Perl_deb(aTHX_ " applying rule Regex-Array\n")); |
ea0c2dbd RGS |
4789 | sm_regex_array: |
4790 | { | |
4791 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(d)); | |
b9f2b683 | 4792 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
c70927a6 | 4793 | SSize_t i; |
0d863452 | 4794 | |
ea0c2dbd RGS |
4795 | for(i = 0; i <= this_len; ++i) { |
4796 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); | |
d7c0d282 | 4797 | DEBUG_M(Perl_deb(aTHX_ " testing element against pattern...\n")); |
e8fe1b7c | 4798 | PUTBACK; |
ea0c2dbd | 4799 | if (svp && matcher_matches_sv(matcher, *svp)) { |
e8fe1b7c | 4800 | SPAGAIN; |
ea0c2dbd RGS |
4801 | destroy_matcher(matcher); |
4802 | RETPUSHYES; | |
4803 | } | |
e8fe1b7c | 4804 | SPAGAIN; |
0d863452 | 4805 | } |
ea0c2dbd RGS |
4806 | destroy_matcher(matcher); |
4807 | RETPUSHNO; | |
0d863452 | 4808 | } |
0d863452 | 4809 | } |
015eb7b9 RGS |
4810 | else if (!SvOK(d)) { |
4811 | /* undef ~~ array */ | |
b9f2b683 | 4812 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
c70927a6 | 4813 | SSize_t i; |
0d863452 | 4814 | |
d7c0d282 | 4815 | DEBUG_M(Perl_deb(aTHX_ " applying rule Undef-Array\n")); |
015eb7b9 | 4816 | for (i = 0; i <= this_len; ++i) { |
b0138e99 | 4817 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); |
d7c0d282 | 4818 | DEBUG_M(Perl_deb(aTHX_ " testing for undef element...\n")); |
015eb7b9 | 4819 | if (!svp || !SvOK(*svp)) |
0d863452 RH |
4820 | RETPUSHYES; |
4821 | } | |
4822 | RETPUSHNO; | |
4823 | } | |
015eb7b9 | 4824 | else { |
41e726ac RGS |
4825 | sm_any_array: |
4826 | { | |
c70927a6 | 4827 | SSize_t i; |
b9f2b683 | 4828 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
0d863452 | 4829 | |
d7c0d282 | 4830 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Array\n")); |
41e726ac RGS |
4831 | for (i = 0; i <= this_len; ++i) { |
4832 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); | |
4833 | if (!svp) | |
4834 | continue; | |
015eb7b9 | 4835 | |
41e726ac RGS |
4836 | PUSHs(d); |
4837 | PUSHs(*svp); | |
4838 | PUTBACK; | |
4839 | /* infinite recursion isn't supposed to happen here */ | |
d7c0d282 | 4840 | DEBUG_M(Perl_deb(aTHX_ " recursively testing array element...\n")); |
be88a5c3 | 4841 | (void) do_smartmatch(NULL, NULL, 1); |
41e726ac | 4842 | SPAGAIN; |
d7c0d282 | 4843 | DEBUG_M(Perl_deb(aTHX_ " recursion finished\n")); |
41e726ac RGS |
4844 | if (SvTRUEx(POPs)) |
4845 | RETPUSHYES; | |
4846 | } | |
4847 | RETPUSHNO; | |
0d863452 | 4848 | } |
0d863452 RH |
4849 | } |
4850 | } | |
b0138e99 | 4851 | /* ~~ qr// */ |
a566f585 | 4852 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_REGEXP) { |
ea0c2dbd RGS |
4853 | if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { |
4854 | SV *t = d; d = e; e = t; | |
d7c0d282 | 4855 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Regex\n")); |
ea0c2dbd RGS |
4856 | goto sm_regex_hash; |
4857 | } | |
4858 | else if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4859 | SV *t = d; d = e; e = t; | |
d7c0d282 | 4860 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Regex\n")); |
ea0c2dbd RGS |
4861 | goto sm_regex_array; |
4862 | } | |
4863 | else { | |
4864 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(e)); | |
e8fe1b7c | 4865 | bool result; |
0d863452 | 4866 | |
d7c0d282 | 4867 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Regex\n")); |
ea0c2dbd | 4868 | PUTBACK; |
e8fe1b7c DM |
4869 | result = matcher_matches_sv(matcher, d); |
4870 | SPAGAIN; | |
4871 | PUSHs(result ? &PL_sv_yes : &PL_sv_no); | |
ea0c2dbd RGS |
4872 | destroy_matcher(matcher); |
4873 | RETURN; | |
4874 | } | |
0d863452 | 4875 | } |
b0138e99 | 4876 | /* ~~ scalar */ |
2c9d2554 RGS |
4877 | /* See if there is overload magic on left */ |
4878 | else if (object_on_left && SvAMAGIC(d)) { | |
4879 | SV *tmpsv; | |
d7c0d282 DM |
4880 | DEBUG_M(Perl_deb(aTHX_ " applying rule Object-Any\n")); |
4881 | DEBUG_M(Perl_deb(aTHX_ " attempting overload\n")); | |
2c9d2554 RGS |
4882 | PUSHs(d); PUSHs(e); |
4883 | PUTBACK; | |
4884 | tmpsv = amagic_call(d, e, smart_amg, AMGf_noright); | |
4885 | if (tmpsv) { | |
4886 | SPAGAIN; | |
4887 | (void)POPs; | |
4888 | SETs(tmpsv); | |
4889 | RETURN; | |
4890 | } | |
4891 | SP -= 2; | |
d7c0d282 | 4892 | DEBUG_M(Perl_deb(aTHX_ " failed to run overload method; falling back...\n")); |
2c9d2554 RGS |
4893 | goto sm_any_scalar; |
4894 | } | |
fb51372e RGS |
4895 | else if (!SvOK(d)) { |
4896 | /* undef ~~ scalar ; we already know that the scalar is SvOK */ | |
d7c0d282 | 4897 | DEBUG_M(Perl_deb(aTHX_ " applying rule undef-Any\n")); |
fb51372e RGS |
4898 | RETPUSHNO; |
4899 | } | |
2c9d2554 RGS |
4900 | else |
4901 | sm_any_scalar: | |
4902 | if (SvNIOK(e) || (SvPOK(e) && looks_like_number(e) && SvNIOK(d))) { | |
d7c0d282 DM |
4903 | DEBUG_M(if (SvNIOK(e)) |
4904 | Perl_deb(aTHX_ " applying rule Any-Num\n"); | |
4905 | else | |
4906 | Perl_deb(aTHX_ " applying rule Num-numish\n"); | |
4907 | ); | |
33ed63a2 | 4908 | /* numeric comparison */ |
0d863452 RH |
4909 | PUSHs(d); PUSHs(e); |
4910 | PUTBACK; | |
a98fe34d | 4911 | if (CopHINTS_get(PL_curcop) & HINT_INTEGER) |
897d3989 | 4912 | (void) Perl_pp_i_eq(aTHX); |
0d863452 | 4913 | else |
897d3989 | 4914 | (void) Perl_pp_eq(aTHX); |
0d863452 RH |
4915 | SPAGAIN; |
4916 | if (SvTRUEx(POPs)) | |
4917 | RETPUSHYES; | |
4918 | else | |
4919 | RETPUSHNO; | |
4920 | } | |
4921 | ||
4922 | /* As a last resort, use string comparison */ | |
d7c0d282 | 4923 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Any\n")); |
0d863452 RH |
4924 | PUSHs(d); PUSHs(e); |
4925 | PUTBACK; | |
897d3989 | 4926 | return Perl_pp_seq(aTHX); |
0d863452 RH |
4927 | } |
4928 | ||
4929 | PP(pp_enterwhen) | |
4930 | { | |
20b7effb | 4931 | dSP; |
eb578fdb | 4932 | PERL_CONTEXT *cx; |
0d863452 RH |
4933 | const I32 gimme = GIMME_V; |
4934 | ||
4935 | /* This is essentially an optimization: if the match | |
4936 | fails, we don't want to push a context and then | |
4937 | pop it again right away, so we skip straight | |
4938 | to the op that follows the leavewhen. | |
25b991bf | 4939 | RETURNOP calls PUTBACK which restores the stack pointer after the POPs. |
0d863452 RH |
4940 | */ |
4941 | if ((0 == (PL_op->op_flags & OPf_SPECIAL)) && !SvTRUEx(POPs)) | |
25b991bf | 4942 | RETURNOP(cLOGOP->op_other->op_next); |
0d863452 | 4943 | |
c08f093b | 4944 | ENTER_with_name("when"); |
0d863452 RH |
4945 | SAVETMPS; |
4946 | ||
4947 | PUSHBLOCK(cx, CXt_WHEN, SP); | |
4948 | PUSHWHEN(cx); | |
4949 | ||
4950 | RETURN; | |
4951 | } | |
4952 | ||
4953 | PP(pp_leavewhen) | |
4954 | { | |
20b7effb | 4955 | dSP; |
c08f093b | 4956 | I32 cxix; |
eb578fdb | 4957 | PERL_CONTEXT *cx; |
c08f093b | 4958 | I32 gimme; |
0d863452 RH |
4959 | SV **newsp; |
4960 | PMOP *newpm; | |
4961 | ||
c08f093b VP |
4962 | cxix = dopoptogiven(cxstack_ix); |
4963 | if (cxix < 0) | |
fc7debfb FC |
4964 | /* diag_listed_as: Can't "when" outside a topicalizer */ |
4965 | DIE(aTHX_ "Can't \"%s\" outside a topicalizer", | |
4966 | PL_op->op_flags & OPf_SPECIAL ? "default" : "when"); | |
c08f093b | 4967 | |
0d863452 RH |
4968 | POPBLOCK(cx,newpm); |
4969 | assert(CxTYPE(cx) == CXt_WHEN); | |
4970 | ||
2fc507dc | 4971 | SP = leave_common(newsp, SP, newsp, gimme, |
2ec7f6f2 | 4972 | SVs_PADTMP|SVs_TEMP, FALSE); |
0d863452 RH |
4973 | PL_curpm = newpm; /* pop $1 et al */ |
4974 | ||
c08f093b VP |
4975 | LEAVE_with_name("when"); |
4976 | ||
4977 | if (cxix < cxstack_ix) | |
4978 | dounwind(cxix); | |
4979 | ||
4980 | cx = &cxstack[cxix]; | |
4981 | ||
4982 | if (CxFOREACH(cx)) { | |
4983 | /* clear off anything above the scope we're re-entering */ | |
4984 | I32 inner = PL_scopestack_ix; | |
4985 | ||
4986 | TOPBLOCK(cx); | |
4987 | if (PL_scopestack_ix < inner) | |
4988 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
4989 | PL_curcop = cx->blk_oldcop; | |
4990 | ||
47c9d59f | 4991 | PERL_ASYNC_CHECK(); |
c08f093b VP |
4992 | return cx->blk_loop.my_op->op_nextop; |
4993 | } | |
47c9d59f NC |
4994 | else { |
4995 | PERL_ASYNC_CHECK(); | |
b1b5a4ae | 4996 | RETURNOP(cx->blk_givwhen.leave_op); |
47c9d59f | 4997 | } |
0d863452 RH |
4998 | } |
4999 | ||
5000 | PP(pp_continue) | |
5001 | { | |
20b7effb | 5002 | dSP; |
0d863452 | 5003 | I32 cxix; |
eb578fdb | 5004 | PERL_CONTEXT *cx; |
c08f093b VP |
5005 | I32 gimme; |
5006 | SV **newsp; | |
5007 | PMOP *newpm; | |
7be5bd17 FR |
5008 | |
5009 | PERL_UNUSED_VAR(gimme); | |
0d863452 RH |
5010 | |
5011 | cxix = dopoptowhen(cxstack_ix); | |
5012 | if (cxix < 0) | |
5013 | DIE(aTHX_ "Can't \"continue\" outside a when block"); | |
c08f093b | 5014 | |
0d863452 RH |
5015 | if (cxix < cxstack_ix) |
5016 | dounwind(cxix); | |
5017 | ||
c08f093b VP |
5018 | POPBLOCK(cx,newpm); |
5019 | assert(CxTYPE(cx) == CXt_WHEN); | |
5020 | ||
5021 | SP = newsp; | |
5022 | PL_curpm = newpm; /* pop $1 et al */ | |
5023 | ||
5024 | LEAVE_with_name("when"); | |
5025 | RETURNOP(cx->blk_givwhen.leave_op->op_next); | |
0d863452 RH |
5026 | } |
5027 | ||
5028 | PP(pp_break) | |
5029 | { | |
0d863452 | 5030 | I32 cxix; |
eb578fdb | 5031 | PERL_CONTEXT *cx; |
25b991bf | 5032 | |
0d863452 | 5033 | cxix = dopoptogiven(cxstack_ix); |
c08f093b VP |
5034 | if (cxix < 0) |
5035 | DIE(aTHX_ "Can't \"break\" outside a given block"); | |
5036 | ||
5037 | cx = &cxstack[cxix]; | |
5038 | if (CxFOREACH(cx)) | |
0d863452 RH |
5039 | DIE(aTHX_ "Can't \"break\" in a loop topicalizer"); |
5040 | ||
5041 | if (cxix < cxstack_ix) | |
5042 | dounwind(cxix); | |
0d863452 | 5043 | |
0787ea8a VP |
5044 | /* Restore the sp at the time we entered the given block */ |
5045 | TOPBLOCK(cx); | |
5046 | ||
c08f093b | 5047 | return cx->blk_givwhen.leave_op; |
0d863452 RH |
5048 | } |
5049 | ||
74e0ddf7 | 5050 | static MAGIC * |
cea2e8a9 | 5051 | S_doparseform(pTHX_ SV *sv) |
a0d0e21e LW |
5052 | { |
5053 | STRLEN len; | |
eb578fdb KW |
5054 | char *s = SvPV(sv, len); |
5055 | char *send; | |
5056 | char *base = NULL; /* start of current field */ | |
5057 | I32 skipspaces = 0; /* number of contiguous spaces seen */ | |
086b26f3 DM |
5058 | bool noblank = FALSE; /* ~ or ~~ seen on this line */ |
5059 | bool repeat = FALSE; /* ~~ seen on this line */ | |
5060 | bool postspace = FALSE; /* a text field may need right padding */ | |
dea28490 | 5061 | U32 *fops; |
eb578fdb | 5062 | U32 *fpc; |
086b26f3 | 5063 | U32 *linepc = NULL; /* position of last FF_LINEMARK */ |
eb578fdb | 5064 | I32 arg; |
086b26f3 DM |
5065 | bool ischop; /* it's a ^ rather than a @ */ |
5066 | bool unchopnum = FALSE; /* at least one @ (i.e. non-chop) num field seen */ | |
a1b95068 | 5067 | int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */ |
3808a683 DM |
5068 | MAGIC *mg = NULL; |
5069 | SV *sv_copy; | |
a0d0e21e | 5070 | |
7918f24d NC |
5071 | PERL_ARGS_ASSERT_DOPARSEFORM; |
5072 | ||
55497cff | 5073 | if (len == 0) |
cea2e8a9 | 5074 | Perl_croak(aTHX_ "Null picture in formline"); |
ac27b0f5 | 5075 | |
3808a683 DM |
5076 | if (SvTYPE(sv) >= SVt_PVMG) { |
5077 | /* This might, of course, still return NULL. */ | |
5078 | mg = mg_find(sv, PERL_MAGIC_fm); | |
5079 | } else { | |
5080 | sv_upgrade(sv, SVt_PVMG); | |
5081 | } | |
5082 | ||
5083 | if (mg) { | |
5084 | /* still the same as previously-compiled string? */ | |
5085 | SV *old = mg->mg_obj; | |
5086 | if ( !(!!SvUTF8(old) ^ !!SvUTF8(sv)) | |
5087 | && len == SvCUR(old) | |
5088 | && strnEQ(SvPVX(old), SvPVX(sv), len) | |
b57b1734 DM |
5089 | ) { |
5090 | DEBUG_f(PerlIO_printf(Perl_debug_log,"Re-using compiled format\n")); | |
3808a683 | 5091 | return mg; |
b57b1734 | 5092 | } |
3808a683 | 5093 | |
b57b1734 | 5094 | DEBUG_f(PerlIO_printf(Perl_debug_log, "Re-compiling format\n")); |
3808a683 DM |
5095 | Safefree(mg->mg_ptr); |
5096 | mg->mg_ptr = NULL; | |
5097 | SvREFCNT_dec(old); | |
5098 | mg->mg_obj = NULL; | |
5099 | } | |
b57b1734 DM |
5100 | else { |
5101 | DEBUG_f(PerlIO_printf(Perl_debug_log, "Compiling format\n")); | |
3808a683 | 5102 | mg = sv_magicext(sv, NULL, PERL_MAGIC_fm, &PL_vtbl_fm, NULL, 0); |
b57b1734 | 5103 | } |
3808a683 DM |
5104 | |
5105 | sv_copy = newSVpvn_utf8(s, len, SvUTF8(sv)); | |
5106 | s = SvPV(sv_copy, len); /* work on the copy, not the original */ | |
5107 | send = s + len; | |
5108 | ||
5109 | ||
815f25c6 DM |
5110 | /* estimate the buffer size needed */ |
5111 | for (base = s; s <= send; s++) { | |
a1b95068 | 5112 | if (*s == '\n' || *s == '@' || *s == '^') |
815f25c6 DM |
5113 | maxops += 10; |
5114 | } | |
5115 | s = base; | |
c445ea15 | 5116 | base = NULL; |
815f25c6 | 5117 | |
a02a5408 | 5118 | Newx(fops, maxops, U32); |
a0d0e21e LW |
5119 | fpc = fops; |
5120 | ||
5121 | if (s < send) { | |
5122 | linepc = fpc; | |
5123 | *fpc++ = FF_LINEMARK; | |
5124 | noblank = repeat = FALSE; | |
5125 | base = s; | |
5126 | } | |
5127 | ||
5128 | while (s <= send) { | |
5129 | switch (*s++) { | |
5130 | default: | |
5131 | skipspaces = 0; | |
5132 | continue; | |
5133 | ||
5134 | case '~': | |
5135 | if (*s == '~') { | |
5136 | repeat = TRUE; | |
b57b1734 DM |
5137 | skipspaces++; |
5138 | s++; | |
a0d0e21e LW |
5139 | } |
5140 | noblank = TRUE; | |
924ba076 | 5141 | /* FALLTHROUGH */ |
a0d0e21e LW |
5142 | case ' ': case '\t': |
5143 | skipspaces++; | |
5144 | continue; | |
a1b95068 WL |
5145 | case 0: |
5146 | if (s < send) { | |
5147 | skipspaces = 0; | |
5148 | continue; | |
5149 | } /* else FALL THROUGH */ | |
5150 | case '\n': | |
a0d0e21e LW |
5151 | arg = s - base; |
5152 | skipspaces++; | |
5153 | arg -= skipspaces; | |
5154 | if (arg) { | |
5f05dabc | 5155 | if (postspace) |
a0d0e21e | 5156 | *fpc++ = FF_SPACE; |
a0d0e21e | 5157 | *fpc++ = FF_LITERAL; |
76912796 | 5158 | *fpc++ = (U32)arg; |
a0d0e21e | 5159 | } |
5f05dabc | 5160 | postspace = FALSE; |
a0d0e21e LW |
5161 | if (s <= send) |
5162 | skipspaces--; | |
5163 | if (skipspaces) { | |
5164 | *fpc++ = FF_SKIP; | |
76912796 | 5165 | *fpc++ = (U32)skipspaces; |
a0d0e21e LW |
5166 | } |
5167 | skipspaces = 0; | |
5168 | if (s <= send) | |
5169 | *fpc++ = FF_NEWLINE; | |
5170 | if (noblank) { | |
5171 | *fpc++ = FF_BLANK; | |
5172 | if (repeat) | |
5173 | arg = fpc - linepc + 1; | |
5174 | else | |
5175 | arg = 0; | |
76912796 | 5176 | *fpc++ = (U32)arg; |
a0d0e21e LW |
5177 | } |
5178 | if (s < send) { | |
5179 | linepc = fpc; | |
5180 | *fpc++ = FF_LINEMARK; | |
5181 | noblank = repeat = FALSE; | |
5182 | base = s; | |
5183 | } | |
5184 | else | |
5185 | s++; | |
5186 | continue; | |
5187 | ||
5188 | case '@': | |
5189 | case '^': | |
5190 | ischop = s[-1] == '^'; | |
5191 | ||
5192 | if (postspace) { | |
5193 | *fpc++ = FF_SPACE; | |
5194 | postspace = FALSE; | |
5195 | } | |
5196 | arg = (s - base) - 1; | |
5197 | if (arg) { | |
5198 | *fpc++ = FF_LITERAL; | |
76912796 | 5199 | *fpc++ = (U32)arg; |
a0d0e21e LW |
5200 | } |
5201 | ||
5202 | base = s - 1; | |
5203 | *fpc++ = FF_FETCH; | |
086b26f3 | 5204 | if (*s == '*') { /* @* or ^* */ |
a0d0e21e | 5205 | s++; |
a1b95068 WL |
5206 | *fpc++ = 2; /* skip the @* or ^* */ |
5207 | if (ischop) { | |
5208 | *fpc++ = FF_LINESNGL; | |
5209 | *fpc++ = FF_CHOP; | |
5210 | } else | |
5211 | *fpc++ = FF_LINEGLOB; | |
a0d0e21e | 5212 | } |
086b26f3 | 5213 | else if (*s == '#' || (*s == '.' && s[1] == '#')) { /* @###, ^### */ |
a701009a | 5214 | arg = ischop ? FORM_NUM_BLANK : 0; |
a0d0e21e LW |
5215 | base = s - 1; |
5216 | while (*s == '#') | |
5217 | s++; | |
5218 | if (*s == '.') { | |
06b5626a | 5219 | const char * const f = ++s; |
a0d0e21e LW |
5220 | while (*s == '#') |
5221 | s++; | |
a701009a | 5222 | arg |= FORM_NUM_POINT + (s - f); |
a0d0e21e LW |
5223 | } |
5224 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5225 | *fpc++ = FF_DECIMAL; | |
76912796 | 5226 | *fpc++ = (U32)arg; |
a1b95068 | 5227 | unchopnum |= ! ischop; |
784707d5 JP |
5228 | } |
5229 | else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */ | |
a701009a | 5230 | arg = ischop ? FORM_NUM_BLANK : 0; |
784707d5 JP |
5231 | base = s - 1; |
5232 | s++; /* skip the '0' first */ | |
5233 | while (*s == '#') | |
5234 | s++; | |
5235 | if (*s == '.') { | |
06b5626a | 5236 | const char * const f = ++s; |
784707d5 JP |
5237 | while (*s == '#') |
5238 | s++; | |
a701009a | 5239 | arg |= FORM_NUM_POINT + (s - f); |
784707d5 JP |
5240 | } |
5241 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5242 | *fpc++ = FF_0DECIMAL; | |
76912796 | 5243 | *fpc++ = (U32)arg; |
a1b95068 | 5244 | unchopnum |= ! ischop; |
a0d0e21e | 5245 | } |
086b26f3 | 5246 | else { /* text field */ |
a0d0e21e LW |
5247 | I32 prespace = 0; |
5248 | bool ismore = FALSE; | |
5249 | ||
5250 | if (*s == '>') { | |
5251 | while (*++s == '>') ; | |
5252 | prespace = FF_SPACE; | |
5253 | } | |
5254 | else if (*s == '|') { | |
5255 | while (*++s == '|') ; | |
5256 | prespace = FF_HALFSPACE; | |
5257 | postspace = TRUE; | |
5258 | } | |
5259 | else { | |
5260 | if (*s == '<') | |
5261 | while (*++s == '<') ; | |
5262 | postspace = TRUE; | |
5263 | } | |
5264 | if (*s == '.' && s[1] == '.' && s[2] == '.') { | |
5265 | s += 3; | |
5266 | ismore = TRUE; | |
5267 | } | |
5268 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5269 | ||
5270 | *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL; | |
5271 | ||
5272 | if (prespace) | |
76912796 | 5273 | *fpc++ = (U32)prespace; /* add SPACE or HALFSPACE */ |
a0d0e21e LW |
5274 | *fpc++ = FF_ITEM; |
5275 | if (ismore) | |
5276 | *fpc++ = FF_MORE; | |
5277 | if (ischop) | |
5278 | *fpc++ = FF_CHOP; | |
5279 | } | |
5280 | base = s; | |
5281 | skipspaces = 0; | |
5282 | continue; | |
5283 | } | |
5284 | } | |
5285 | *fpc++ = FF_END; | |
5286 | ||
815f25c6 | 5287 | assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */ |
a0d0e21e | 5288 | arg = fpc - fops; |
74e0ddf7 | 5289 | |
3808a683 | 5290 | mg->mg_ptr = (char *) fops; |
74e0ddf7 | 5291 | mg->mg_len = arg * sizeof(U32); |
3808a683 DM |
5292 | mg->mg_obj = sv_copy; |
5293 | mg->mg_flags |= MGf_REFCOUNTED; | |
a1b95068 | 5294 | |
bfed75c6 | 5295 | if (unchopnum && repeat) |
75f63940 | 5296 | Perl_die(aTHX_ "Repeated format line will never terminate (~~ and @#)"); |
74e0ddf7 NC |
5297 | |
5298 | return mg; | |
a1b95068 WL |
5299 | } |
5300 | ||
5301 | ||
5302 | STATIC bool | |
5303 | S_num_overflow(NV value, I32 fldsize, I32 frcsize) | |
5304 | { | |
5305 | /* Can value be printed in fldsize chars, using %*.*f ? */ | |
5306 | NV pwr = 1; | |
5307 | NV eps = 0.5; | |
5308 | bool res = FALSE; | |
5309 | int intsize = fldsize - (value < 0 ? 1 : 0); | |
5310 | ||
a701009a | 5311 | if (frcsize & FORM_NUM_POINT) |
a1b95068 | 5312 | intsize--; |
a701009a | 5313 | frcsize &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
a1b95068 WL |
5314 | intsize -= frcsize; |
5315 | ||
5316 | while (intsize--) pwr *= 10.0; | |
5317 | while (frcsize--) eps /= 10.0; | |
5318 | ||
5319 | if( value >= 0 ){ | |
5320 | if (value + eps >= pwr) | |
5321 | res = TRUE; | |
5322 | } else { | |
5323 | if (value - eps <= -pwr) | |
5324 | res = TRUE; | |
5325 | } | |
5326 | return res; | |
a0d0e21e | 5327 | } |
4e35701f | 5328 | |
bbed91b5 | 5329 | static I32 |
0bd48802 | 5330 | S_run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen) |
bbed91b5 | 5331 | { |
0bd48802 | 5332 | SV * const datasv = FILTER_DATA(idx); |
504618e9 | 5333 | const int filter_has_file = IoLINES(datasv); |
ad64d0ec NC |
5334 | SV * const filter_state = MUTABLE_SV(IoTOP_GV(datasv)); |
5335 | SV * const filter_sub = MUTABLE_SV(IoBOTTOM_GV(datasv)); | |
941a98a0 | 5336 | int status = 0; |
ec0b63d7 | 5337 | SV *upstream; |
941a98a0 | 5338 | STRLEN got_len; |
162177c1 Z |
5339 | char *got_p = NULL; |
5340 | char *prune_from = NULL; | |
34113e50 | 5341 | bool read_from_cache = FALSE; |
bb7a0f54 | 5342 | STRLEN umaxlen; |
d60d2019 | 5343 | SV *err = NULL; |
bb7a0f54 | 5344 | |
7918f24d NC |
5345 | PERL_ARGS_ASSERT_RUN_USER_FILTER; |
5346 | ||
bb7a0f54 MHM |
5347 | assert(maxlen >= 0); |
5348 | umaxlen = maxlen; | |
5675696b | 5349 | |
bbed91b5 | 5350 | /* I was having segfault trouble under Linux 2.2.5 after a |
f6bab5f6 | 5351 | parse error occurred. (Had to hack around it with a test |
13765c85 | 5352 | for PL_parser->error_count == 0.) Solaris doesn't segfault -- |
bbed91b5 KF |
5353 | not sure where the trouble is yet. XXX */ |
5354 | ||
4464f08e NC |
5355 | { |
5356 | SV *const cache = datasv; | |
937b367d NC |
5357 | if (SvOK(cache)) { |
5358 | STRLEN cache_len; | |
5359 | const char *cache_p = SvPV(cache, cache_len); | |
941a98a0 NC |
5360 | STRLEN take = 0; |
5361 | ||
bb7a0f54 | 5362 | if (umaxlen) { |
941a98a0 NC |
5363 | /* Running in block mode and we have some cached data already. |
5364 | */ | |
bb7a0f54 | 5365 | if (cache_len >= umaxlen) { |
941a98a0 NC |
5366 | /* In fact, so much data we don't even need to call |
5367 | filter_read. */ | |
bb7a0f54 | 5368 | take = umaxlen; |
941a98a0 NC |
5369 | } |
5370 | } else { | |
10edeb5d JH |
5371 | const char *const first_nl = |
5372 | (const char *)memchr(cache_p, '\n', cache_len); | |
941a98a0 NC |
5373 | if (first_nl) { |
5374 | take = first_nl + 1 - cache_p; | |
5375 | } | |
5376 | } | |
5377 | if (take) { | |
5378 | sv_catpvn(buf_sv, cache_p, take); | |
5379 | sv_chop(cache, cache_p + take); | |
486ec47a | 5380 | /* Definitely not EOF */ |
937b367d NC |
5381 | return 1; |
5382 | } | |
941a98a0 | 5383 | |
937b367d | 5384 | sv_catsv(buf_sv, cache); |
bb7a0f54 MHM |
5385 | if (umaxlen) { |
5386 | umaxlen -= cache_len; | |
941a98a0 | 5387 | } |
937b367d | 5388 | SvOK_off(cache); |
34113e50 | 5389 | read_from_cache = TRUE; |
937b367d NC |
5390 | } |
5391 | } | |
ec0b63d7 | 5392 | |
34113e50 NC |
5393 | /* Filter API says that the filter appends to the contents of the buffer. |
5394 | Usually the buffer is "", so the details don't matter. But if it's not, | |
5395 | then clearly what it contains is already filtered by this filter, so we | |
5396 | don't want to pass it in a second time. | |
5397 | I'm going to use a mortal in case the upstream filter croaks. */ | |
ec0b63d7 NC |
5398 | upstream = ((SvOK(buf_sv) && sv_len(buf_sv)) || SvGMAGICAL(buf_sv)) |
5399 | ? sv_newmortal() : buf_sv; | |
5400 | SvUPGRADE(upstream, SVt_PV); | |
937b367d | 5401 | |
bbed91b5 | 5402 | if (filter_has_file) { |
67e70b33 | 5403 | status = FILTER_READ(idx+1, upstream, 0); |
bbed91b5 KF |
5404 | } |
5405 | ||
34113e50 | 5406 | if (filter_sub && status >= 0) { |
39644a26 | 5407 | dSP; |
bbed91b5 KF |
5408 | int count; |
5409 | ||
d343c3ef | 5410 | ENTER_with_name("call_filter_sub"); |
55b5114f | 5411 | SAVE_DEFSV; |
bbed91b5 KF |
5412 | SAVETMPS; |
5413 | EXTEND(SP, 2); | |
5414 | ||
414bf5ae | 5415 | DEFSV_set(upstream); |
bbed91b5 | 5416 | PUSHMARK(SP); |
6e449a3a | 5417 | mPUSHi(0); |
bbed91b5 KF |
5418 | if (filter_state) { |
5419 | PUSHs(filter_state); | |
5420 | } | |
5421 | PUTBACK; | |
d60d2019 | 5422 | count = call_sv(filter_sub, G_SCALAR|G_EVAL); |
bbed91b5 KF |
5423 | SPAGAIN; |
5424 | ||
5425 | if (count > 0) { | |
5426 | SV *out = POPs; | |
2e8409ad | 5427 | SvGETMAGIC(out); |
bbed91b5 | 5428 | if (SvOK(out)) { |
941a98a0 | 5429 | status = SvIV(out); |
bbed91b5 | 5430 | } |
eed484f9 DD |
5431 | else { |
5432 | SV * const errsv = ERRSV; | |
5433 | if (SvTRUE_NN(errsv)) | |
5434 | err = newSVsv(errsv); | |
d60d2019 | 5435 | } |
bbed91b5 KF |
5436 | } |
5437 | ||
5438 | PUTBACK; | |
5439 | FREETMPS; | |
d343c3ef | 5440 | LEAVE_with_name("call_filter_sub"); |
bbed91b5 KF |
5441 | } |
5442 | ||
536ac391 FC |
5443 | if (SvGMAGICAL(upstream)) { |
5444 | mg_get(upstream); | |
5445 | if (upstream == buf_sv) mg_free(buf_sv); | |
5446 | } | |
b68108d9 | 5447 | if (SvIsCOW(upstream)) sv_force_normal(upstream); |
d60d2019 | 5448 | if(!err && SvOK(upstream)) { |
536ac391 | 5449 | got_p = SvPV_nomg(upstream, got_len); |
bb7a0f54 MHM |
5450 | if (umaxlen) { |
5451 | if (got_len > umaxlen) { | |
5452 | prune_from = got_p + umaxlen; | |
937b367d | 5453 | } |
941a98a0 | 5454 | } else { |
162177c1 | 5455 | char *const first_nl = (char *)memchr(got_p, '\n', got_len); |
941a98a0 NC |
5456 | if (first_nl && first_nl + 1 < got_p + got_len) { |
5457 | /* There's a second line here... */ | |
5458 | prune_from = first_nl + 1; | |
937b367d | 5459 | } |
937b367d NC |
5460 | } |
5461 | } | |
d60d2019 | 5462 | if (!err && prune_from) { |
941a98a0 NC |
5463 | /* Oh. Too long. Stuff some in our cache. */ |
5464 | STRLEN cached_len = got_p + got_len - prune_from; | |
4464f08e | 5465 | SV *const cache = datasv; |
941a98a0 | 5466 | |
4464f08e | 5467 | if (SvOK(cache)) { |
941a98a0 NC |
5468 | /* Cache should be empty. */ |
5469 | assert(!SvCUR(cache)); | |
5470 | } | |
5471 | ||
5472 | sv_setpvn(cache, prune_from, cached_len); | |
5473 | /* If you ask for block mode, you may well split UTF-8 characters. | |
5474 | "If it breaks, you get to keep both parts" | |
5475 | (Your code is broken if you don't put them back together again | |
5476 | before something notices.) */ | |
5477 | if (SvUTF8(upstream)) { | |
5478 | SvUTF8_on(cache); | |
5479 | } | |
00752fe1 FC |
5480 | if (SvPOK(upstream)) SvCUR_set(upstream, got_len - cached_len); |
5481 | else | |
5482 | /* Cannot just use sv_setpvn, as that could free the buffer | |
5483 | before we have a chance to assign it. */ | |
5484 | sv_usepvn(upstream, savepvn(got_p, got_len - cached_len), | |
5485 | got_len - cached_len); | |
162177c1 | 5486 | *prune_from = 0; |
941a98a0 NC |
5487 | /* Can't yet be EOF */ |
5488 | if (status == 0) | |
5489 | status = 1; | |
5490 | } | |
937b367d | 5491 | |
34113e50 NC |
5492 | /* If they are at EOF but buf_sv has something in it, then they may never |
5493 | have touched the SV upstream, so it may be undefined. If we naively | |
5494 | concatenate it then we get a warning about use of uninitialised value. | |
5495 | */ | |
d60d2019 | 5496 | if (!err && upstream != buf_sv && |
dc423e96 | 5497 | SvOK(upstream)) { |
536ac391 | 5498 | sv_catsv_nomg(buf_sv, upstream); |
937b367d | 5499 | } |
ae2c96ed | 5500 | else if (SvOK(upstream)) (void)SvPV_force_nolen(buf_sv); |
937b367d | 5501 | |
941a98a0 | 5502 | if (status <= 0) { |
bbed91b5 | 5503 | IoLINES(datasv) = 0; |
bbed91b5 KF |
5504 | if (filter_state) { |
5505 | SvREFCNT_dec(filter_state); | |
a0714e2c | 5506 | IoTOP_GV(datasv) = NULL; |
bbed91b5 KF |
5507 | } |
5508 | if (filter_sub) { | |
5509 | SvREFCNT_dec(filter_sub); | |
a0714e2c | 5510 | IoBOTTOM_GV(datasv) = NULL; |
bbed91b5 | 5511 | } |
0bd48802 | 5512 | filter_del(S_run_user_filter); |
bbed91b5 | 5513 | } |
d60d2019 JL |
5514 | |
5515 | if (err) | |
5516 | croak_sv(err); | |
5517 | ||
34113e50 NC |
5518 | if (status == 0 && read_from_cache) { |
5519 | /* If we read some data from the cache (and by getting here it implies | |
5520 | that we emptied the cache) then we aren't yet at EOF, and mustn't | |
5521 | report that to our caller. */ | |
5522 | return 1; | |
5523 | } | |
941a98a0 | 5524 | return status; |
bbed91b5 | 5525 | } |
84d4ea48 | 5526 | |
241d1a3b | 5527 | /* |
14d04a33 | 5528 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5529 | */ |