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 | { | |
97aff369 | 43 | dVAR; |
39644a26 | 44 | dSP; |
a0d0e21e | 45 | I32 cxix; |
93f0bc49 | 46 | const PERL_CONTEXT *cx; |
a0d0e21e LW |
47 | EXTEND(SP, 1); |
48 | ||
93f0bc49 FC |
49 | if (PL_op->op_private & OPpOFFBYONE) { |
50 | if (!(cx = caller_cx(1,NULL))) RETPUSHUNDEF; | |
51 | } | |
52 | else { | |
53 | cxix = dopoptosub(cxstack_ix); | |
54 | if (cxix < 0) | |
a0d0e21e | 55 | RETPUSHUNDEF; |
93f0bc49 FC |
56 | cx = &cxstack[cxix]; |
57 | } | |
a0d0e21e | 58 | |
93f0bc49 | 59 | switch (cx->blk_gimme) { |
54310121 | 60 | case G_ARRAY: |
a0d0e21e | 61 | RETPUSHYES; |
54310121 | 62 | case G_SCALAR: |
a0d0e21e | 63 | RETPUSHNO; |
54310121 | 64 | default: |
65 | RETPUSHUNDEF; | |
66 | } | |
a0d0e21e LW |
67 | } |
68 | ||
2cd61cdb IZ |
69 | PP(pp_regcreset) |
70 | { | |
97aff369 | 71 | dVAR; |
0b4182de | 72 | TAINT_NOT; |
2cd61cdb IZ |
73 | return NORMAL; |
74 | } | |
75 | ||
b3eb6a9b GS |
76 | PP(pp_regcomp) |
77 | { | |
97aff369 | 78 | dVAR; |
39644a26 | 79 | dSP; |
eb578fdb | 80 | PMOP *pm = (PMOP*)cLOGOP->op_other; |
9f141731 | 81 | SV **args; |
df787a7b | 82 | int nargs; |
84679df5 | 83 | REGEXP *re = NULL; |
9f141731 DM |
84 | REGEXP *new_re; |
85 | const regexp_engine *eng; | |
dbc200c5 | 86 | bool is_bare_re= FALSE; |
bfed75c6 | 87 | |
df787a7b DM |
88 | if (PL_op->op_flags & OPf_STACKED) { |
89 | dMARK; | |
90 | nargs = SP - MARK; | |
91 | args = ++MARK; | |
92 | } | |
93 | else { | |
94 | nargs = 1; | |
95 | args = SP; | |
96 | } | |
97 | ||
4b5a0d1c | 98 | /* prevent recompiling under /o and ithreads. */ |
3db8f154 | 99 | #if defined(USE_ITHREADS) |
131b3ad0 | 100 | if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) { |
df787a7b | 101 | SP = args-1; |
131b3ad0 DM |
102 | RETURN; |
103 | } | |
513629ba | 104 | #endif |
d4b87e75 | 105 | |
9f141731 DM |
106 | re = PM_GETRE(pm); |
107 | assert (re != (REGEXP*) &PL_sv_undef); | |
108 | eng = re ? RX_ENGINE(re) : current_re_engine(); | |
109 | ||
dbc200c5 YO |
110 | /* |
111 | In the below logic: these are basically the same - check if this regcomp is part of a split. | |
112 | ||
113 | (PL_op->op_pmflags & PMf_split ) | |
114 | (PL_op->op_next->op_type == OP_PUSHRE) | |
115 | ||
116 | We could add a new mask for this and copy the PMf_split, if we did | |
117 | some bit definition fiddling first. | |
118 | ||
119 | For now we leave this | |
120 | */ | |
121 | ||
3c13cae6 DM |
122 | new_re = (eng->op_comp |
123 | ? eng->op_comp | |
124 | : &Perl_re_op_compile | |
125 | )(aTHX_ args, nargs, pm->op_code_list, eng, re, | |
346d3070 | 126 | &is_bare_re, |
dbc200c5 | 127 | (pm->op_pmflags & RXf_PMf_FLAGCOPYMASK), |
a5ae69f0 DM |
128 | pm->op_pmflags | |
129 | (PL_op->op_flags & OPf_SPECIAL ? PMf_USE_RE_EVAL : 0)); | |
dbc200c5 | 130 | |
346d3070 | 131 | if (pm->op_pmflags & PMf_HAS_CV) |
8d919b0a | 132 | ReANY(new_re)->qr_anoncv |
9fe3265f | 133 | = (CV*) SvREFCNT_inc(PAD_SV(PL_op->op_targ)); |
9f141731 DM |
134 | |
135 | if (is_bare_re) { | |
136 | REGEXP *tmp; | |
137 | /* The match's LHS's get-magic might need to access this op's regexp | |
138 | (e.g. $' =~ /$re/ while foo; see bug 70764). So we must call | |
139 | get-magic now before we replace the regexp. Hopefully this hack can | |
140 | be replaced with the approach described at | |
141 | http://www.nntp.perl.org/group/perl.perl5.porters/2007/03/msg122415.html | |
142 | some day. */ | |
143 | if (pm->op_type == OP_MATCH) { | |
144 | SV *lhs; | |
284167a5 | 145 | const bool was_tainted = TAINT_get; |
9f141731 DM |
146 | if (pm->op_flags & OPf_STACKED) |
147 | lhs = args[-1]; | |
148 | else if (pm->op_private & OPpTARGET_MY) | |
149 | lhs = PAD_SV(pm->op_targ); | |
150 | else lhs = DEFSV; | |
151 | SvGETMAGIC(lhs); | |
152 | /* Restore the previous value of PL_tainted (which may have been | |
153 | modified by get-magic), to avoid incorrectly setting the | |
284167a5 S |
154 | RXf_TAINTED flag with RX_TAINT_on further down. */ |
155 | TAINT_set(was_tainted); | |
dc6d7f5c | 156 | #ifdef NO_TAINT_SUPPORT |
9a9b5ec9 DM |
157 | PERL_UNUSED_VAR(was_tainted); |
158 | #endif | |
df787a7b | 159 | } |
9f141731 DM |
160 | tmp = reg_temp_copy(NULL, new_re); |
161 | ReREFCNT_dec(new_re); | |
162 | new_re = tmp; | |
df787a7b | 163 | } |
dbc200c5 | 164 | |
9f141731 DM |
165 | if (re != new_re) { |
166 | ReREFCNT_dec(re); | |
167 | PM_SETRE(pm, new_re); | |
c277df42 | 168 | } |
d4b87e75 | 169 | |
dbc200c5 | 170 | |
284167a5 | 171 | if (TAINTING_get && TAINT_get) { |
9f141731 | 172 | SvTAINTED_on((SV*)new_re); |
284167a5 | 173 | RX_TAINT_on(new_re); |
72311751 | 174 | } |
72311751 | 175 | |
c737faaf YO |
176 | #if !defined(USE_ITHREADS) |
177 | /* can't change the optree at runtime either */ | |
178 | /* PMf_KEEP is handled differently under threads to avoid these problems */ | |
9f141731 DM |
179 | if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm) |
180 | pm = PL_curpm; | |
a0d0e21e | 181 | if (pm->op_pmflags & PMf_KEEP) { |
c90c0ff4 | 182 | pm->op_private &= ~OPpRUNTIME; /* no point compiling again */ |
533c011a | 183 | cLOGOP->op_first->op_next = PL_op->op_next; |
a0d0e21e | 184 | } |
c737faaf | 185 | #endif |
9f141731 | 186 | |
df787a7b | 187 | SP = args-1; |
a0d0e21e LW |
188 | RETURN; |
189 | } | |
190 | ||
9f141731 | 191 | |
a0d0e21e LW |
192 | PP(pp_substcont) |
193 | { | |
97aff369 | 194 | dVAR; |
39644a26 | 195 | dSP; |
eb578fdb KW |
196 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
197 | PMOP * const pm = (PMOP*) cLOGOP->op_other; | |
198 | SV * const dstr = cx->sb_dstr; | |
199 | char *s = cx->sb_s; | |
200 | char *m = cx->sb_m; | |
a0d0e21e | 201 | char *orig = cx->sb_orig; |
eb578fdb | 202 | REGEXP * const rx = cx->sb_rx; |
c445ea15 | 203 | SV *nsv = NULL; |
988e6e7e | 204 | REGEXP *old = PM_GETRE(pm); |
f410a211 NC |
205 | |
206 | PERL_ASYNC_CHECK(); | |
207 | ||
988e6e7e | 208 | if(old != rx) { |
bfed75c6 | 209 | if(old) |
988e6e7e | 210 | ReREFCNT_dec(old); |
d6106309 | 211 | PM_SETRE(pm,ReREFCNT_inc(rx)); |
d8f2cf8a AB |
212 | } |
213 | ||
d9f97599 | 214 | rxres_restore(&cx->sb_rxres, rx); |
c90c0ff4 | 215 | |
a0d0e21e | 216 | if (cx->sb_iters++) { |
a3b680e6 | 217 | const I32 saviters = cx->sb_iters; |
a0d0e21e | 218 | if (cx->sb_iters > cx->sb_maxiters) |
cea2e8a9 | 219 | DIE(aTHX_ "Substitution loop"); |
a0d0e21e | 220 | |
447ee134 DM |
221 | SvGETMAGIC(TOPs); /* possibly clear taint on $1 etc: #67962 */ |
222 | ||
ef07e810 | 223 | /* See "how taint works" above pp_subst() */ |
20be6587 DM |
224 | if (SvTAINTED(TOPs)) |
225 | cx->sb_rxtainted |= SUBST_TAINT_REPL; | |
447ee134 | 226 | sv_catsv_nomg(dstr, POPs); |
2c296965 | 227 | if (CxONCE(cx) || s < orig || |
03c83e26 DM |
228 | !CALLREGEXEC(rx, s, cx->sb_strend, orig, |
229 | (s == m), cx->sb_targ, NULL, | |
d5e7783a | 230 | (REXEC_IGNOREPOS|REXEC_NOT_FIRST|REXEC_FAIL_ON_UNDERFLOW))) |
a0d0e21e | 231 | { |
8ca8a454 | 232 | SV *targ = cx->sb_targ; |
748a9306 | 233 | |
078c425b JH |
234 | assert(cx->sb_strend >= s); |
235 | if(cx->sb_strend > s) { | |
236 | if (DO_UTF8(dstr) && !SvUTF8(targ)) | |
4bac9ae4 | 237 | sv_catpvn_nomg_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv); |
078c425b | 238 | else |
4bac9ae4 | 239 | sv_catpvn_nomg(dstr, s, cx->sb_strend - s); |
078c425b | 240 | } |
20be6587 DM |
241 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
242 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
9212bbba | 243 | |
8ca8a454 NC |
244 | if (pm->op_pmflags & PMf_NONDESTRUCT) { |
245 | PUSHs(dstr); | |
246 | /* From here on down we're using the copy, and leaving the | |
247 | original untouched. */ | |
248 | targ = dstr; | |
249 | } | |
250 | else { | |
9e0ea7f3 FC |
251 | SV_CHECK_THINKFIRST_COW_DROP(targ); |
252 | if (isGV(targ)) Perl_croak_no_modify(); | |
253 | SvPV_free(targ); | |
8ca8a454 NC |
254 | SvPV_set(targ, SvPVX(dstr)); |
255 | SvCUR_set(targ, SvCUR(dstr)); | |
256 | SvLEN_set(targ, SvLEN(dstr)); | |
257 | if (DO_UTF8(dstr)) | |
258 | SvUTF8_on(targ); | |
259 | SvPV_set(dstr, NULL); | |
260 | ||
52c47e16 | 261 | PL_tainted = 0; |
4f4d7508 | 262 | mPUSHi(saviters - 1); |
48c036b1 | 263 | |
8ca8a454 NC |
264 | (void)SvPOK_only_UTF8(targ); |
265 | } | |
5cd24f17 | 266 | |
20be6587 | 267 | /* update the taint state of various various variables in |
ef07e810 DM |
268 | * preparation for final exit. |
269 | * See "how taint works" above pp_subst() */ | |
284167a5 | 270 | if (TAINTING_get) { |
20be6587 DM |
271 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || |
272 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
273 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
274 | ) | |
275 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
276 | ||
277 | if (!(cx->sb_rxtainted & SUBST_TAINT_BOOLRET) | |
278 | && (cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
279 | ) | |
280 | SvTAINTED_on(TOPs); /* taint return value */ | |
281 | /* needed for mg_set below */ | |
284167a5 S |
282 | TAINT_set( |
283 | cBOOL(cx->sb_rxtainted & | |
284 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)) | |
285 | ); | |
20be6587 DM |
286 | SvTAINT(TARG); |
287 | } | |
288 | /* PL_tainted must be correctly set for this mg_set */ | |
289 | SvSETMAGIC(TARG); | |
290 | TAINT_NOT; | |
4633a7c4 | 291 | LEAVE_SCOPE(cx->sb_oldsave); |
a0d0e21e | 292 | POPSUBST(cx); |
47c9d59f | 293 | PERL_ASYNC_CHECK(); |
a0d0e21e | 294 | RETURNOP(pm->op_next); |
118e2215 | 295 | assert(0); /* NOTREACHED */ |
a0d0e21e | 296 | } |
8e5e9ebe | 297 | cx->sb_iters = saviters; |
a0d0e21e | 298 | } |
07bc277f | 299 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
300 | m = s; |
301 | s = orig; | |
6502e081 | 302 | assert(!RX_SUBOFFSET(rx)); |
07bc277f | 303 | cx->sb_orig = orig = RX_SUBBEG(rx); |
a0d0e21e LW |
304 | s = orig + (m - s); |
305 | cx->sb_strend = s + (cx->sb_strend - m); | |
306 | } | |
07bc277f | 307 | cx->sb_m = m = RX_OFFS(rx)[0].start + orig; |
db79b45b | 308 | if (m > s) { |
bfed75c6 | 309 | if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ)) |
4bac9ae4 | 310 | sv_catpvn_nomg_utf8_upgrade(dstr, s, m - s, nsv); |
db79b45b | 311 | else |
4bac9ae4 | 312 | sv_catpvn_nomg(dstr, s, m-s); |
db79b45b | 313 | } |
07bc277f | 314 | cx->sb_s = RX_OFFS(rx)[0].end + orig; |
084916e3 | 315 | { /* Update the pos() information. */ |
8ca8a454 NC |
316 | SV * const sv |
317 | = (pm->op_pmflags & PMf_NONDESTRUCT) ? cx->sb_dstr : cx->sb_targ; | |
084916e3 | 318 | MAGIC *mg; |
96c2a8ff FC |
319 | if (!(mg = mg_find_mglob(sv))) { |
320 | mg = sv_magicext_mglob(sv); | |
084916e3 | 321 | } |
25fdce4a FC |
322 | assert(SvPOK(dstr)); |
323 | MgBYTEPOS_set(mg, sv, SvPVX(dstr), m - orig); | |
084916e3 | 324 | } |
988e6e7e | 325 | if (old != rx) |
d6106309 | 326 | (void)ReREFCNT_inc(rx); |
20be6587 | 327 | /* update the taint state of various various variables in preparation |
ef07e810 DM |
328 | * for calling the code block. |
329 | * See "how taint works" above pp_subst() */ | |
284167a5 | 330 | if (TAINTING_get) { |
20be6587 DM |
331 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
332 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
333 | ||
334 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
335 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
336 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
337 | ) | |
338 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
339 | ||
340 | if (cx->sb_iters > 1 && (cx->sb_rxtainted & | |
341 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL))) | |
8ca8a454 NC |
342 | SvTAINTED_on((pm->op_pmflags & PMf_NONDESTRUCT) |
343 | ? cx->sb_dstr : cx->sb_targ); | |
20be6587 DM |
344 | TAINT_NOT; |
345 | } | |
d9f97599 | 346 | rxres_save(&cx->sb_rxres, rx); |
af9838cc | 347 | PL_curpm = pm; |
29f2e912 | 348 | RETURNOP(pm->op_pmstashstartu.op_pmreplstart); |
a0d0e21e LW |
349 | } |
350 | ||
c90c0ff4 | 351 | void |
864dbfa3 | 352 | Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx) |
c90c0ff4 | 353 | { |
354 | UV *p = (UV*)*rsp; | |
355 | U32 i; | |
7918f24d NC |
356 | |
357 | PERL_ARGS_ASSERT_RXRES_SAVE; | |
96a5add6 | 358 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 359 | |
07bc277f | 360 | if (!p || p[1] < RX_NPARENS(rx)) { |
db2c6cb3 | 361 | #ifdef PERL_ANY_COW |
6502e081 | 362 | i = 7 + (RX_NPARENS(rx)+1) * 2; |
ed252734 | 363 | #else |
6502e081 | 364 | i = 6 + (RX_NPARENS(rx)+1) * 2; |
ed252734 | 365 | #endif |
c90c0ff4 | 366 | if (!p) |
a02a5408 | 367 | Newx(p, i, UV); |
c90c0ff4 | 368 | else |
369 | Renew(p, i, UV); | |
370 | *rsp = (void*)p; | |
371 | } | |
372 | ||
5eabab15 DM |
373 | /* what (if anything) to free on croak */ |
374 | *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL); | |
cf93c79d | 375 | RX_MATCH_COPIED_off(rx); |
6c31ff74 | 376 | *p++ = RX_NPARENS(rx); |
c90c0ff4 | 377 | |
db2c6cb3 | 378 | #ifdef PERL_ANY_COW |
bdd9a1b1 NC |
379 | *p++ = PTR2UV(RX_SAVED_COPY(rx)); |
380 | RX_SAVED_COPY(rx) = NULL; | |
ed252734 NC |
381 | #endif |
382 | ||
07bc277f NC |
383 | *p++ = PTR2UV(RX_SUBBEG(rx)); |
384 | *p++ = (UV)RX_SUBLEN(rx); | |
6502e081 DM |
385 | *p++ = (UV)RX_SUBOFFSET(rx); |
386 | *p++ = (UV)RX_SUBCOFFSET(rx); | |
07bc277f NC |
387 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
388 | *p++ = (UV)RX_OFFS(rx)[i].start; | |
389 | *p++ = (UV)RX_OFFS(rx)[i].end; | |
c90c0ff4 | 390 | } |
391 | } | |
392 | ||
9c105995 NC |
393 | static void |
394 | S_rxres_restore(pTHX_ void **rsp, REGEXP *rx) | |
c90c0ff4 | 395 | { |
396 | UV *p = (UV*)*rsp; | |
397 | U32 i; | |
7918f24d NC |
398 | |
399 | PERL_ARGS_ASSERT_RXRES_RESTORE; | |
96a5add6 | 400 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 401 | |
ed252734 | 402 | RX_MATCH_COPY_FREE(rx); |
cf93c79d | 403 | RX_MATCH_COPIED_set(rx, *p); |
c90c0ff4 | 404 | *p++ = 0; |
6c31ff74 | 405 | RX_NPARENS(rx) = *p++; |
c90c0ff4 | 406 | |
db2c6cb3 | 407 | #ifdef PERL_ANY_COW |
bdd9a1b1 NC |
408 | if (RX_SAVED_COPY(rx)) |
409 | SvREFCNT_dec (RX_SAVED_COPY(rx)); | |
410 | RX_SAVED_COPY(rx) = INT2PTR(SV*,*p); | |
ed252734 NC |
411 | *p++ = 0; |
412 | #endif | |
413 | ||
07bc277f NC |
414 | RX_SUBBEG(rx) = INT2PTR(char*,*p++); |
415 | RX_SUBLEN(rx) = (I32)(*p++); | |
6502e081 DM |
416 | RX_SUBOFFSET(rx) = (I32)*p++; |
417 | RX_SUBCOFFSET(rx) = (I32)*p++; | |
07bc277f NC |
418 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
419 | RX_OFFS(rx)[i].start = (I32)(*p++); | |
420 | RX_OFFS(rx)[i].end = (I32)(*p++); | |
c90c0ff4 | 421 | } |
422 | } | |
423 | ||
9c105995 NC |
424 | static void |
425 | S_rxres_free(pTHX_ void **rsp) | |
c90c0ff4 | 426 | { |
44f8325f | 427 | UV * const p = (UV*)*rsp; |
7918f24d NC |
428 | |
429 | PERL_ARGS_ASSERT_RXRES_FREE; | |
96a5add6 | 430 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 431 | |
432 | if (p) { | |
94010e71 | 433 | void *tmp = INT2PTR(char*,*p); |
6c31ff74 | 434 | #ifdef PERL_POISON |
db2c6cb3 | 435 | #ifdef PERL_ANY_COW |
6c31ff74 | 436 | U32 i = 9 + p[1] * 2; |
94010e71 | 437 | #else |
6c31ff74 | 438 | U32 i = 8 + p[1] * 2; |
94010e71 | 439 | #endif |
6c31ff74 NC |
440 | #endif |
441 | ||
db2c6cb3 | 442 | #ifdef PERL_ANY_COW |
6c31ff74 | 443 | SvREFCNT_dec (INT2PTR(SV*,p[2])); |
ed252734 | 444 | #endif |
6c31ff74 NC |
445 | #ifdef PERL_POISON |
446 | PoisonFree(p, i, sizeof(UV)); | |
447 | #endif | |
448 | ||
449 | Safefree(tmp); | |
c90c0ff4 | 450 | Safefree(p); |
4608196e | 451 | *rsp = NULL; |
c90c0ff4 | 452 | } |
453 | } | |
454 | ||
a701009a DM |
455 | #define FORM_NUM_BLANK (1<<30) |
456 | #define FORM_NUM_POINT (1<<29) | |
457 | ||
a0d0e21e LW |
458 | PP(pp_formline) |
459 | { | |
97aff369 | 460 | dVAR; dSP; dMARK; dORIGMARK; |
eb578fdb | 461 | SV * const tmpForm = *++MARK; |
086b26f3 | 462 | SV *formsv; /* contains text of original format */ |
eb578fdb KW |
463 | U32 *fpc; /* format ops program counter */ |
464 | char *t; /* current append position in target string */ | |
086b26f3 | 465 | const char *f; /* current position in format string */ |
eb578fdb KW |
466 | I32 arg; |
467 | SV *sv = NULL; /* current item */ | |
086b26f3 | 468 | const char *item = NULL;/* string value of current item */ |
9b4bdfd4 DM |
469 | I32 itemsize = 0; /* length (chars) of item, possibly truncated */ |
470 | I32 itembytes = 0; /* as itemsize, but length in bytes */ | |
086b26f3 DM |
471 | I32 fieldsize = 0; /* width of current field */ |
472 | I32 lines = 0; /* number of lines that have been output */ | |
473 | bool chopspace = (strchr(PL_chopset, ' ') != NULL); /* does $: have space */ | |
474 | const char *chophere = NULL; /* where to chop current item */ | |
f5ada144 | 475 | STRLEN linemark = 0; /* pos of start of line in output */ |
65202027 | 476 | NV value; |
086b26f3 | 477 | bool gotsome = FALSE; /* seen at least one non-blank item on this line */ |
9b4bdfd4 | 478 | STRLEN len; /* length of current sv */ |
26e935cf | 479 | STRLEN linemax; /* estimate of output size in bytes */ |
1bd51a4c IH |
480 | bool item_is_utf8 = FALSE; |
481 | bool targ_is_utf8 = FALSE; | |
bd7084a6 | 482 | const char *fmt; |
74e0ddf7 | 483 | MAGIC *mg = NULL; |
4ff700b9 DM |
484 | U8 *source; /* source of bytes to append */ |
485 | STRLEN to_copy; /* how may bytes to append */ | |
ea60cfe8 | 486 | char trans; /* what chars to translate */ |
74e0ddf7 | 487 | |
3808a683 | 488 | mg = doparseform(tmpForm); |
a0d0e21e | 489 | |
74e0ddf7 | 490 | fpc = (U32*)mg->mg_ptr; |
3808a683 DM |
491 | /* the actual string the format was compiled from. |
492 | * with overload etc, this may not match tmpForm */ | |
493 | formsv = mg->mg_obj; | |
494 | ||
74e0ddf7 | 495 | |
3280af22 | 496 | SvPV_force(PL_formtarget, len); |
3808a683 | 497 | if (SvTAINTED(tmpForm) || SvTAINTED(formsv)) |
125b9982 | 498 | SvTAINTED_on(PL_formtarget); |
1bd51a4c IH |
499 | if (DO_UTF8(PL_formtarget)) |
500 | targ_is_utf8 = TRUE; | |
26e935cf DM |
501 | linemax = (SvCUR(formsv) * (IN_BYTES ? 1 : 3) + 1); |
502 | t = SvGROW(PL_formtarget, len + linemax + 1); | |
503 | /* XXX from now onwards, SvCUR(PL_formtarget) is invalid */ | |
a0d0e21e | 504 | t += len; |
3808a683 | 505 | f = SvPV_const(formsv, len); |
a0d0e21e LW |
506 | |
507 | for (;;) { | |
508 | DEBUG_f( { | |
bfed75c6 | 509 | const char *name = "???"; |
a0d0e21e LW |
510 | arg = -1; |
511 | switch (*fpc) { | |
512 | case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break; | |
513 | case FF_BLANK: arg = fpc[1]; name = "BLANK"; break; | |
514 | case FF_SKIP: arg = fpc[1]; name = "SKIP"; break; | |
515 | case FF_FETCH: arg = fpc[1]; name = "FETCH"; break; | |
516 | case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break; | |
517 | ||
518 | case FF_CHECKNL: name = "CHECKNL"; break; | |
519 | case FF_CHECKCHOP: name = "CHECKCHOP"; break; | |
520 | case FF_SPACE: name = "SPACE"; break; | |
521 | case FF_HALFSPACE: name = "HALFSPACE"; break; | |
522 | case FF_ITEM: name = "ITEM"; break; | |
523 | case FF_CHOP: name = "CHOP"; break; | |
524 | case FF_LINEGLOB: name = "LINEGLOB"; break; | |
525 | case FF_NEWLINE: name = "NEWLINE"; break; | |
526 | case FF_MORE: name = "MORE"; break; | |
527 | case FF_LINEMARK: name = "LINEMARK"; break; | |
528 | case FF_END: name = "END"; break; | |
bfed75c6 | 529 | case FF_0DECIMAL: name = "0DECIMAL"; break; |
a1b95068 | 530 | case FF_LINESNGL: name = "LINESNGL"; break; |
a0d0e21e LW |
531 | } |
532 | if (arg >= 0) | |
bf49b057 | 533 | PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg); |
a0d0e21e | 534 | else |
bf49b057 | 535 | PerlIO_printf(Perl_debug_log, "%-16s\n", name); |
5f80b19c | 536 | } ); |
a0d0e21e | 537 | switch (*fpc++) { |
4a73dc0b | 538 | case FF_LINEMARK: /* start (or end) of a line */ |
f5ada144 | 539 | linemark = t - SvPVX(PL_formtarget); |
a0d0e21e LW |
540 | lines++; |
541 | gotsome = FALSE; | |
542 | break; | |
543 | ||
4a73dc0b | 544 | case FF_LITERAL: /* append <arg> literal chars */ |
ea60cfe8 DM |
545 | to_copy = *fpc++; |
546 | source = (U8 *)f; | |
547 | f += to_copy; | |
548 | trans = '~'; | |
75645721 | 549 | item_is_utf8 = targ_is_utf8 ? !!DO_UTF8(formsv) : !!SvUTF8(formsv); |
ea60cfe8 | 550 | goto append; |
a0d0e21e | 551 | |
4a73dc0b | 552 | case FF_SKIP: /* skip <arg> chars in format */ |
a0d0e21e LW |
553 | f += *fpc++; |
554 | break; | |
555 | ||
4a73dc0b | 556 | case FF_FETCH: /* get next item and set field size to <arg> */ |
a0d0e21e LW |
557 | arg = *fpc++; |
558 | f += arg; | |
559 | fieldsize = arg; | |
560 | ||
561 | if (MARK < SP) | |
562 | sv = *++MARK; | |
563 | else { | |
3280af22 | 564 | sv = &PL_sv_no; |
a2a5de95 | 565 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments"); |
a0d0e21e | 566 | } |
125b9982 NT |
567 | if (SvTAINTED(sv)) |
568 | SvTAINTED_on(PL_formtarget); | |
a0d0e21e LW |
569 | break; |
570 | ||
4a73dc0b | 571 | case FF_CHECKNL: /* find max len of item (up to \n) that fits field */ |
5a34cab7 | 572 | { |
5a34cab7 | 573 | const char *s = item = SvPV_const(sv, len); |
9b4bdfd4 DM |
574 | const char *send = s + len; |
575 | ||
576 | itemsize = 0; | |
577 | item_is_utf8 = DO_UTF8(sv); | |
578 | while (s < send) { | |
579 | if (!isCNTRL(*s)) | |
580 | gotsome = TRUE; | |
581 | else if (*s == '\n') | |
582 | break; | |
583 | ||
584 | if (item_is_utf8) | |
585 | s += UTF8SKIP(s); | |
586 | else | |
587 | s++; | |
588 | itemsize++; | |
589 | if (itemsize == fieldsize) | |
590 | break; | |
591 | } | |
592 | itembytes = s - item; | |
5a34cab7 | 593 | break; |
a0ed51b3 | 594 | } |
a0d0e21e | 595 | |
4a73dc0b | 596 | case FF_CHECKCHOP: /* like CHECKNL, but up to highest split point */ |
5a34cab7 NC |
597 | { |
598 | const char *s = item = SvPV_const(sv, len); | |
9b4bdfd4 DM |
599 | const char *send = s + len; |
600 | I32 size = 0; | |
601 | ||
602 | chophere = NULL; | |
603 | item_is_utf8 = DO_UTF8(sv); | |
604 | while (s < send) { | |
605 | /* look for a legal split position */ | |
606 | if (isSPACE(*s)) { | |
607 | if (*s == '\r') { | |
608 | chophere = s; | |
609 | itemsize = size; | |
610 | break; | |
611 | } | |
612 | if (chopspace) { | |
613 | /* provisional split point */ | |
614 | chophere = s; | |
615 | itemsize = size; | |
616 | } | |
617 | /* we delay testing fieldsize until after we've | |
618 | * processed the possible split char directly | |
619 | * following the last field char; so if fieldsize=3 | |
620 | * and item="a b cdef", we consume "a b", not "a". | |
621 | * Ditto further down. | |
622 | */ | |
623 | if (size == fieldsize) | |
624 | break; | |
625 | } | |
626 | else { | |
627 | if (strchr(PL_chopset, *s)) { | |
628 | /* provisional split point */ | |
629 | /* for a non-space split char, we include | |
630 | * the split char; hence the '+1' */ | |
631 | chophere = s + 1; | |
632 | itemsize = size; | |
633 | } | |
634 | if (size == fieldsize) | |
635 | break; | |
636 | if (!isCNTRL(*s)) | |
637 | gotsome = TRUE; | |
638 | } | |
639 | ||
640 | if (item_is_utf8) | |
641 | s += UTF8SKIP(s); | |
642 | else | |
077dbbf3 | 643 | s++; |
9b4bdfd4 DM |
644 | size++; |
645 | } | |
646 | if (!chophere || s == send) { | |
647 | chophere = s; | |
648 | itemsize = size; | |
649 | } | |
650 | itembytes = chophere - item; | |
651 | ||
5a34cab7 | 652 | break; |
a0d0e21e | 653 | } |
a0d0e21e | 654 | |
4a73dc0b | 655 | case FF_SPACE: /* append padding space (diff of field, item size) */ |
a0d0e21e LW |
656 | arg = fieldsize - itemsize; |
657 | if (arg) { | |
658 | fieldsize -= arg; | |
659 | while (arg-- > 0) | |
660 | *t++ = ' '; | |
661 | } | |
662 | break; | |
663 | ||
4a73dc0b | 664 | case FF_HALFSPACE: /* like FF_SPACE, but only append half as many */ |
a0d0e21e LW |
665 | arg = fieldsize - itemsize; |
666 | if (arg) { | |
667 | arg /= 2; | |
668 | fieldsize -= arg; | |
669 | while (arg-- > 0) | |
670 | *t++ = ' '; | |
671 | } | |
672 | break; | |
673 | ||
4a73dc0b | 674 | case FF_ITEM: /* append a text item, while blanking ctrl chars */ |
9b4bdfd4 | 675 | to_copy = itembytes; |
8aa7beb6 DM |
676 | source = (U8 *)item; |
677 | trans = 1; | |
8aa7beb6 | 678 | goto append; |
a0d0e21e | 679 | |
4a73dc0b | 680 | case FF_CHOP: /* (for ^*) chop the current item */ |
5a34cab7 NC |
681 | { |
682 | const char *s = chophere; | |
683 | if (chopspace) { | |
af68e756 | 684 | while (isSPACE(*s)) |
5a34cab7 NC |
685 | s++; |
686 | } | |
9b4bdfd4 DM |
687 | if (SvPOKp(sv)) |
688 | sv_chop(sv,s); | |
689 | else | |
690 | /* tied, overloaded or similar strangeness. | |
691 | * Do it the hard way */ | |
692 | sv_setpvn(sv, s, len - (s-item)); | |
5a34cab7 NC |
693 | SvSETMAGIC(sv); |
694 | break; | |
a0d0e21e | 695 | } |
a0d0e21e | 696 | |
4a73dc0b | 697 | case FF_LINESNGL: /* process ^* */ |
a1b95068 | 698 | chopspace = 0; |
c67159e1 | 699 | /* FALLTHROUGH */ |
4a73dc0b DM |
700 | |
701 | case FF_LINEGLOB: /* process @* */ | |
5a34cab7 | 702 | { |
e32383e2 | 703 | const bool oneline = fpc[-1] == FF_LINESNGL; |
5a34cab7 | 704 | const char *s = item = SvPV_const(sv, len); |
7440a75b | 705 | const char *const send = s + len; |
7440a75b | 706 | |
f3f2f1a3 | 707 | item_is_utf8 = DO_UTF8(sv); |
a1137ee5 | 708 | if (!len) |
7440a75b | 709 | break; |
ea60cfe8 | 710 | trans = 0; |
0d21cefe | 711 | gotsome = TRUE; |
a1137ee5 | 712 | chophere = s + len; |
4ff700b9 DM |
713 | source = (U8 *) s; |
714 | to_copy = len; | |
0d21cefe DM |
715 | while (s < send) { |
716 | if (*s++ == '\n') { | |
717 | if (oneline) { | |
9b4bdfd4 | 718 | to_copy = s - item - 1; |
0d21cefe DM |
719 | chophere = s; |
720 | break; | |
721 | } else { | |
722 | if (s == send) { | |
0d21cefe DM |
723 | to_copy--; |
724 | } else | |
725 | lines++; | |
1bd51a4c | 726 | } |
a0d0e21e | 727 | } |
0d21cefe | 728 | } |
a2c0032b DM |
729 | } |
730 | ||
ea60cfe8 DM |
731 | append: |
732 | /* append to_copy bytes from source to PL_formstring. | |
733 | * item_is_utf8 implies source is utf8. | |
734 | * if trans, translate certain characters during the copy */ | |
a2c0032b DM |
735 | { |
736 | U8 *tmp = NULL; | |
26e935cf | 737 | STRLEN grow = 0; |
0325ce87 DM |
738 | |
739 | SvCUR_set(PL_formtarget, | |
740 | t - SvPVX_const(PL_formtarget)); | |
741 | ||
0d21cefe DM |
742 | if (targ_is_utf8 && !item_is_utf8) { |
743 | source = tmp = bytes_to_utf8(source, &to_copy); | |
0d21cefe DM |
744 | } else { |
745 | if (item_is_utf8 && !targ_is_utf8) { | |
f5ada144 | 746 | U8 *s; |
0d21cefe | 747 | /* Upgrade targ to UTF8, and then we reduce it to |
0325ce87 DM |
748 | a problem we have a simple solution for. |
749 | Don't need get magic. */ | |
0d21cefe | 750 | sv_utf8_upgrade_nomg(PL_formtarget); |
0325ce87 | 751 | targ_is_utf8 = TRUE; |
f5ada144 DM |
752 | /* re-calculate linemark */ |
753 | s = (U8*)SvPVX(PL_formtarget); | |
26e935cf DM |
754 | /* the bytes we initially allocated to append the |
755 | * whole line may have been gobbled up during the | |
756 | * upgrade, so allocate a whole new line's worth | |
757 | * for safety */ | |
758 | grow = linemax; | |
f5ada144 DM |
759 | while (linemark--) |
760 | s += UTF8SKIP(s); | |
761 | linemark = s - (U8*)SvPVX(PL_formtarget); | |
e8e72d41 | 762 | } |
0d21cefe DM |
763 | /* Easy. They agree. */ |
764 | assert (item_is_utf8 == targ_is_utf8); | |
765 | } | |
26e935cf DM |
766 | if (!trans) |
767 | /* @* and ^* are the only things that can exceed | |
768 | * the linemax, so grow by the output size, plus | |
769 | * a whole new form's worth in case of any further | |
770 | * output */ | |
771 | grow = linemax + to_copy; | |
772 | if (grow) | |
773 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + grow + 1); | |
0d21cefe DM |
774 | t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget); |
775 | ||
776 | Copy(source, t, to_copy, char); | |
ea60cfe8 | 777 | if (trans) { |
8aa7beb6 DM |
778 | /* blank out ~ or control chars, depending on trans. |
779 | * works on bytes not chars, so relies on not | |
780 | * matching utf8 continuation bytes */ | |
ea60cfe8 DM |
781 | U8 *s = (U8*)t; |
782 | U8 *send = s + to_copy; | |
783 | while (s < send) { | |
8aa7beb6 | 784 | const int ch = *s; |
077dbbf3 | 785 | if (trans == '~' ? (ch == '~') : isCNTRL(ch)) |
ea60cfe8 DM |
786 | *s = ' '; |
787 | s++; | |
788 | } | |
789 | } | |
790 | ||
0d21cefe DM |
791 | t += to_copy; |
792 | SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) + to_copy); | |
a1137ee5 | 793 | if (tmp) |
0d21cefe | 794 | Safefree(tmp); |
5a34cab7 | 795 | break; |
a0d0e21e | 796 | } |
a0d0e21e | 797 | |
4a73dc0b | 798 | case FF_0DECIMAL: /* like FF_DECIMAL but for 0### */ |
a0d0e21e | 799 | arg = *fpc++; |
bd7084a6 DM |
800 | #if defined(USE_LONG_DOUBLE) |
801 | fmt = (const char *) | |
802 | ((arg & FORM_NUM_POINT) ? | |
803 | "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl); | |
804 | #else | |
805 | fmt = (const char *) | |
806 | ((arg & FORM_NUM_POINT) ? | |
807 | "%#0*.*f" : "%0*.*f"); | |
808 | #endif | |
809 | goto ff_dec; | |
5d37acd6 | 810 | |
bd7084a6 DM |
811 | case FF_DECIMAL: /* do @##, ^##, where <arg>=(precision|flags) */ |
812 | arg = *fpc++; | |
813 | #if defined(USE_LONG_DOUBLE) | |
814 | fmt = (const char *) | |
815 | ((arg & FORM_NUM_POINT) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl); | |
816 | #else | |
817 | fmt = (const char *) | |
818 | ((arg & FORM_NUM_POINT) ? "%#*.*f" : "%*.*f"); | |
819 | #endif | |
820 | ff_dec: | |
784707d5 JP |
821 | /* If the field is marked with ^ and the value is undefined, |
822 | blank it out. */ | |
a701009a | 823 | if ((arg & FORM_NUM_BLANK) && !SvOK(sv)) { |
784707d5 JP |
824 | arg = fieldsize; |
825 | while (arg--) | |
826 | *t++ = ' '; | |
827 | break; | |
828 | } | |
829 | gotsome = TRUE; | |
830 | value = SvNV(sv); | |
a1b95068 | 831 | /* overflow evidence */ |
bfed75c6 | 832 | if (num_overflow(value, fieldsize, arg)) { |
a1b95068 WL |
833 | arg = fieldsize; |
834 | while (arg--) | |
835 | *t++ = '#'; | |
836 | break; | |
837 | } | |
784707d5 JP |
838 | /* Formats aren't yet marked for locales, so assume "yes". */ |
839 | { | |
a2287a13 | 840 | DECLARE_STORE_LC_NUMERIC_SET_TO_NEEDED(); |
a701009a | 841 | arg &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
b587c0e8 DM |
842 | /* we generate fmt ourselves so it is safe */ |
843 | GCC_DIAG_IGNORE(-Wformat-nonliteral); | |
bd7084a6 | 844 | my_snprintf(t, SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)), fmt, (int) fieldsize, (int) arg, value); |
b587c0e8 | 845 | GCC_DIAG_RESTORE; |
a2287a13 | 846 | RESTORE_LC_NUMERIC(); |
784707d5 JP |
847 | } |
848 | t += fieldsize; | |
849 | break; | |
a1b95068 | 850 | |
4a73dc0b | 851 | case FF_NEWLINE: /* delete trailing spaces, then append \n */ |
a0d0e21e | 852 | f++; |
f5ada144 | 853 | while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ') ; |
a0d0e21e LW |
854 | t++; |
855 | *t++ = '\n'; | |
856 | break; | |
857 | ||
4a73dc0b | 858 | case FF_BLANK: /* for arg==0: do '~'; for arg>0 : do '~~' */ |
a0d0e21e LW |
859 | arg = *fpc++; |
860 | if (gotsome) { | |
861 | if (arg) { /* repeat until fields exhausted? */ | |
11f9eeaf DM |
862 | fpc--; |
863 | goto end; | |
a0d0e21e LW |
864 | } |
865 | } | |
866 | else { | |
f5ada144 | 867 | t = SvPVX(PL_formtarget) + linemark; |
a0d0e21e LW |
868 | lines--; |
869 | } | |
870 | break; | |
871 | ||
4a73dc0b | 872 | case FF_MORE: /* replace long end of string with '...' */ |
5a34cab7 NC |
873 | { |
874 | const char *s = chophere; | |
875 | const char *send = item + len; | |
876 | if (chopspace) { | |
af68e756 | 877 | while (isSPACE(*s) && (s < send)) |
5a34cab7 | 878 | s++; |
a0d0e21e | 879 | } |
5a34cab7 NC |
880 | if (s < send) { |
881 | char *s1; | |
882 | arg = fieldsize - itemsize; | |
883 | if (arg) { | |
884 | fieldsize -= arg; | |
885 | while (arg-- > 0) | |
886 | *t++ = ' '; | |
887 | } | |
888 | s1 = t - 3; | |
889 | if (strnEQ(s1," ",3)) { | |
890 | while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1])) | |
891 | s1--; | |
892 | } | |
893 | *s1++ = '.'; | |
894 | *s1++ = '.'; | |
895 | *s1++ = '.'; | |
a0d0e21e | 896 | } |
5a34cab7 | 897 | break; |
a0d0e21e | 898 | } |
4a73dc0b DM |
899 | |
900 | case FF_END: /* tidy up, then return */ | |
11f9eeaf | 901 | end: |
bf2bec63 | 902 | assert(t < SvPVX_const(PL_formtarget) + SvLEN(PL_formtarget)); |
a0d0e21e | 903 | *t = '\0'; |
b15aece3 | 904 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
1bd51a4c IH |
905 | if (targ_is_utf8) |
906 | SvUTF8_on(PL_formtarget); | |
3280af22 | 907 | FmLINES(PL_formtarget) += lines; |
a0d0e21e | 908 | SP = ORIGMARK; |
11f9eeaf DM |
909 | if (fpc[-1] == FF_BLANK) |
910 | RETURNOP(cLISTOP->op_first); | |
911 | else | |
912 | RETPUSHYES; | |
a0d0e21e LW |
913 | } |
914 | } | |
915 | } | |
916 | ||
917 | PP(pp_grepstart) | |
918 | { | |
27da23d5 | 919 | dVAR; dSP; |
a0d0e21e LW |
920 | SV *src; |
921 | ||
3280af22 | 922 | if (PL_stack_base + *PL_markstack_ptr == SP) { |
a0d0e21e | 923 | (void)POPMARK; |
54310121 | 924 | if (GIMME_V == G_SCALAR) |
6e449a3a | 925 | mXPUSHi(0); |
533c011a | 926 | RETURNOP(PL_op->op_next->op_next); |
a0d0e21e | 927 | } |
3280af22 | 928 | PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1; |
897d3989 NC |
929 | Perl_pp_pushmark(aTHX); /* push dst */ |
930 | Perl_pp_pushmark(aTHX); /* push src */ | |
d343c3ef | 931 | ENTER_with_name("grep"); /* enter outer scope */ |
a0d0e21e LW |
932 | |
933 | SAVETMPS; | |
59f00321 RGS |
934 | if (PL_op->op_private & OPpGREP_LEX) |
935 | SAVESPTR(PAD_SVl(PL_op->op_targ)); | |
936 | else | |
937 | SAVE_DEFSV; | |
d343c3ef | 938 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 939 | SAVEVPTR(PL_curpm); |
a0d0e21e | 940 | |
3280af22 | 941 | src = PL_stack_base[*PL_markstack_ptr]; |
60779a30 DM |
942 | if (SvPADTMP(src)) { |
943 | assert(!IS_PADGV(src)); | |
a0ed822e FC |
944 | src = PL_stack_base[*PL_markstack_ptr] = sv_mortalcopy(src); |
945 | PL_tmps_floor++; | |
946 | } | |
a0d0e21e | 947 | SvTEMP_off(src); |
59f00321 RGS |
948 | if (PL_op->op_private & OPpGREP_LEX) |
949 | PAD_SVl(PL_op->op_targ) = src; | |
950 | else | |
414bf5ae | 951 | DEFSV_set(src); |
a0d0e21e LW |
952 | |
953 | PUTBACK; | |
533c011a | 954 | if (PL_op->op_type == OP_MAPSTART) |
897d3989 | 955 | Perl_pp_pushmark(aTHX); /* push top */ |
533c011a | 956 | return ((LOGOP*)PL_op->op_next)->op_other; |
a0d0e21e LW |
957 | } |
958 | ||
a0d0e21e LW |
959 | PP(pp_mapwhile) |
960 | { | |
27da23d5 | 961 | dVAR; dSP; |
f54cb97a | 962 | const I32 gimme = GIMME_V; |
544f3153 | 963 | I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */ |
a0d0e21e LW |
964 | I32 count; |
965 | I32 shift; | |
966 | SV** src; | |
ac27b0f5 | 967 | SV** dst; |
a0d0e21e | 968 | |
544f3153 | 969 | /* first, move source pointer to the next item in the source list */ |
3280af22 | 970 | ++PL_markstack_ptr[-1]; |
544f3153 GS |
971 | |
972 | /* if there are new items, push them into the destination list */ | |
4c90a460 | 973 | if (items && gimme != G_VOID) { |
544f3153 GS |
974 | /* might need to make room back there first */ |
975 | if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) { | |
976 | /* XXX this implementation is very pessimal because the stack | |
977 | * is repeatedly extended for every set of items. Is possible | |
978 | * to do this without any stack extension or copying at all | |
979 | * by maintaining a separate list over which the map iterates | |
18ef8bea | 980 | * (like foreach does). --gsar */ |
544f3153 GS |
981 | |
982 | /* everything in the stack after the destination list moves | |
983 | * towards the end the stack by the amount of room needed */ | |
984 | shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]); | |
985 | ||
986 | /* items to shift up (accounting for the moved source pointer) */ | |
987 | count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1); | |
18ef8bea BT |
988 | |
989 | /* This optimization is by Ben Tilly and it does | |
990 | * things differently from what Sarathy (gsar) | |
991 | * is describing. The downside of this optimization is | |
992 | * that leaves "holes" (uninitialized and hopefully unused areas) | |
993 | * to the Perl stack, but on the other hand this | |
994 | * shouldn't be a problem. If Sarathy's idea gets | |
995 | * implemented, this optimization should become | |
996 | * irrelevant. --jhi */ | |
997 | if (shift < count) | |
998 | shift = count; /* Avoid shifting too often --Ben Tilly */ | |
bfed75c6 | 999 | |
924508f0 GS |
1000 | EXTEND(SP,shift); |
1001 | src = SP; | |
1002 | dst = (SP += shift); | |
3280af22 NIS |
1003 | PL_markstack_ptr[-1] += shift; |
1004 | *PL_markstack_ptr += shift; | |
544f3153 | 1005 | while (count--) |
a0d0e21e LW |
1006 | *dst-- = *src--; |
1007 | } | |
544f3153 | 1008 | /* copy the new items down to the destination list */ |
ac27b0f5 | 1009 | dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1; |
22023b26 | 1010 | if (gimme == G_ARRAY) { |
b2a2a901 DM |
1011 | /* add returned items to the collection (making mortal copies |
1012 | * if necessary), then clear the current temps stack frame | |
1013 | * *except* for those items. We do this splicing the items | |
1014 | * into the start of the tmps frame (so some items may be on | |
59d53fd6 | 1015 | * the tmps stack twice), then moving PL_tmps_floor above |
b2a2a901 DM |
1016 | * them, then freeing the frame. That way, the only tmps that |
1017 | * accumulate over iterations are the return values for map. | |
1018 | * We have to do to this way so that everything gets correctly | |
1019 | * freed if we die during the map. | |
1020 | */ | |
1021 | I32 tmpsbase; | |
1022 | I32 i = items; | |
1023 | /* make space for the slice */ | |
1024 | EXTEND_MORTAL(items); | |
1025 | tmpsbase = PL_tmps_floor + 1; | |
1026 | Move(PL_tmps_stack + tmpsbase, | |
1027 | PL_tmps_stack + tmpsbase + items, | |
1028 | PL_tmps_ix - PL_tmps_floor, | |
1029 | SV*); | |
1030 | PL_tmps_ix += items; | |
1031 | ||
1032 | while (i-- > 0) { | |
1033 | SV *sv = POPs; | |
1034 | if (!SvTEMP(sv)) | |
1035 | sv = sv_mortalcopy(sv); | |
1036 | *dst-- = sv; | |
1037 | PL_tmps_stack[tmpsbase++] = SvREFCNT_inc_simple(sv); | |
1038 | } | |
1039 | /* clear the stack frame except for the items */ | |
1040 | PL_tmps_floor += items; | |
1041 | FREETMPS; | |
1042 | /* FREETMPS may have cleared the TEMP flag on some of the items */ | |
1043 | i = items; | |
1044 | while (i-- > 0) | |
1045 | SvTEMP_on(PL_tmps_stack[--tmpsbase]); | |
22023b26 | 1046 | } |
bfed75c6 | 1047 | else { |
22023b26 TP |
1048 | /* scalar context: we don't care about which values map returns |
1049 | * (we use undef here). And so we certainly don't want to do mortal | |
1050 | * copies of meaningless values. */ | |
1051 | while (items-- > 0) { | |
b988aa42 | 1052 | (void)POPs; |
22023b26 TP |
1053 | *dst-- = &PL_sv_undef; |
1054 | } | |
b2a2a901 | 1055 | FREETMPS; |
22023b26 | 1056 | } |
a0d0e21e | 1057 | } |
b2a2a901 DM |
1058 | else { |
1059 | FREETMPS; | |
1060 | } | |
d343c3ef | 1061 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
1062 | |
1063 | /* All done yet? */ | |
3280af22 | 1064 | if (PL_markstack_ptr[-1] > *PL_markstack_ptr) { |
a0d0e21e LW |
1065 | |
1066 | (void)POPMARK; /* pop top */ | |
d343c3ef | 1067 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 1068 | (void)POPMARK; /* pop src */ |
3280af22 | 1069 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 1070 | (void)POPMARK; /* pop dst */ |
3280af22 | 1071 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 1072 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
1073 | if (PL_op->op_private & OPpGREP_LEX) { |
1074 | SV* sv = sv_newmortal(); | |
1075 | sv_setiv(sv, items); | |
1076 | PUSHs(sv); | |
1077 | } | |
1078 | else { | |
1079 | dTARGET; | |
1080 | XPUSHi(items); | |
1081 | } | |
a0d0e21e | 1082 | } |
54310121 | 1083 | else if (gimme == G_ARRAY) |
1084 | SP += items; | |
a0d0e21e LW |
1085 | RETURN; |
1086 | } | |
1087 | else { | |
1088 | SV *src; | |
1089 | ||
d343c3ef | 1090 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1091 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1092 | |
544f3153 | 1093 | /* set $_ to the new source item */ |
3280af22 | 1094 | src = PL_stack_base[PL_markstack_ptr[-1]]; |
60779a30 DM |
1095 | if (SvPADTMP(src)) { |
1096 | assert(!IS_PADGV(src)); | |
1097 | src = sv_mortalcopy(src); | |
1098 | } | |
a0d0e21e | 1099 | SvTEMP_off(src); |
59f00321 RGS |
1100 | if (PL_op->op_private & OPpGREP_LEX) |
1101 | PAD_SVl(PL_op->op_targ) = src; | |
1102 | else | |
414bf5ae | 1103 | DEFSV_set(src); |
a0d0e21e LW |
1104 | |
1105 | RETURNOP(cLOGOP->op_other); | |
1106 | } | |
1107 | } | |
1108 | ||
a0d0e21e LW |
1109 | /* Range stuff. */ |
1110 | ||
1111 | PP(pp_range) | |
1112 | { | |
97aff369 | 1113 | dVAR; |
a0d0e21e | 1114 | if (GIMME == G_ARRAY) |
1a67a97c | 1115 | return NORMAL; |
538573f7 | 1116 | if (SvTRUEx(PAD_SV(PL_op->op_targ))) |
1a67a97c | 1117 | return cLOGOP->op_other; |
538573f7 | 1118 | else |
1a67a97c | 1119 | return NORMAL; |
a0d0e21e LW |
1120 | } |
1121 | ||
1122 | PP(pp_flip) | |
1123 | { | |
97aff369 | 1124 | dVAR; |
39644a26 | 1125 | dSP; |
a0d0e21e LW |
1126 | |
1127 | if (GIMME == G_ARRAY) { | |
1a67a97c | 1128 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1129 | } |
1130 | else { | |
1131 | dTOPss; | |
44f8325f | 1132 | SV * const targ = PAD_SV(PL_op->op_targ); |
bfed75c6 | 1133 | int flip = 0; |
790090df | 1134 | |
bfed75c6 | 1135 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
4e3399f9 YST |
1136 | if (GvIO(PL_last_in_gv)) { |
1137 | flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1138 | } | |
1139 | else { | |
fafc274c | 1140 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
44f8325f AL |
1141 | if (gv && GvSV(gv)) |
1142 | flip = SvIV(sv) == SvIV(GvSV(gv)); | |
4e3399f9 | 1143 | } |
bfed75c6 AL |
1144 | } else { |
1145 | flip = SvTRUE(sv); | |
1146 | } | |
1147 | if (flip) { | |
a0d0e21e | 1148 | sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1); |
533c011a | 1149 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1150 | sv_setiv(targ, 1); |
3e3baf6d | 1151 | SETs(targ); |
a0d0e21e LW |
1152 | RETURN; |
1153 | } | |
1154 | else { | |
1155 | sv_setiv(targ, 0); | |
924508f0 | 1156 | SP--; |
1a67a97c | 1157 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1158 | } |
1159 | } | |
76f68e9b | 1160 | sv_setpvs(TARG, ""); |
a0d0e21e LW |
1161 | SETs(targ); |
1162 | RETURN; | |
1163 | } | |
1164 | } | |
1165 | ||
8e9bbdb9 RGS |
1166 | /* This code tries to decide if "$left .. $right" should use the |
1167 | magical string increment, or if the range is numeric (we make | |
1168 | an exception for .."0" [#18165]). AMS 20021031. */ | |
1169 | ||
1170 | #define RANGE_IS_NUMERIC(left,right) ( \ | |
b0e74086 RGS |
1171 | SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \ |
1172 | SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \ | |
e0ab1c0e | 1173 | (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \ |
b15aece3 | 1174 | looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \ |
e0ab1c0e | 1175 | && (!SvOK(right) || looks_like_number(right)))) |
8e9bbdb9 | 1176 | |
a0d0e21e LW |
1177 | PP(pp_flop) |
1178 | { | |
97aff369 | 1179 | dVAR; dSP; |
a0d0e21e LW |
1180 | |
1181 | if (GIMME == G_ARRAY) { | |
1182 | dPOPPOPssrl; | |
86cb7173 | 1183 | |
5b295bef RD |
1184 | SvGETMAGIC(left); |
1185 | SvGETMAGIC(right); | |
a0d0e21e | 1186 | |
8e9bbdb9 | 1187 | if (RANGE_IS_NUMERIC(left,right)) { |
b262c4c9 | 1188 | IV i, j, n; |
4d91eccc FC |
1189 | if ((SvOK(left) && !SvIOK(left) && SvNV_nomg(left) < IV_MIN) || |
1190 | (SvOK(right) && (SvIOK(right) | |
1191 | ? SvIsUV(right) && SvUV(right) > IV_MAX | |
1192 | : SvNV_nomg(right) > IV_MAX))) | |
d470f89e | 1193 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad | 1194 | i = SvIV_nomg(left); |
b262c4c9 JH |
1195 | j = SvIV_nomg(right); |
1196 | if (j >= i) { | |
1197 | /* Dance carefully around signed max. */ | |
1198 | bool overflow = (i <= 0 && j > SSize_t_MAX + i - 1); | |
1199 | if (!overflow) { | |
1200 | n = j - i + 1; | |
1201 | /* The wraparound of signed integers is undefined | |
1202 | * behavior, but here we aim for count >=1, and | |
1203 | * negative count is just wrong. */ | |
1204 | if (n < 1) | |
1205 | overflow = TRUE; | |
1206 | } | |
1207 | if (overflow) | |
1208 | Perl_croak(aTHX_ "Out of memory during list extend"); | |
1209 | EXTEND_MORTAL(n); | |
1210 | EXTEND(SP, n); | |
bbce6d69 | 1211 | } |
c1ab3db2 | 1212 | else |
b262c4c9 JH |
1213 | n = 0; |
1214 | while (n--) { | |
901017d6 | 1215 | SV * const sv = sv_2mortal(newSViv(i++)); |
a0d0e21e LW |
1216 | PUSHs(sv); |
1217 | } | |
1218 | } | |
1219 | else { | |
3c323193 FC |
1220 | STRLEN len, llen; |
1221 | const char * const lpv = SvPV_nomg_const(left, llen); | |
f52e41ad | 1222 | const char * const tmps = SvPV_nomg_const(right, len); |
a0d0e21e | 1223 | |
3c323193 | 1224 | SV *sv = newSVpvn_flags(lpv, llen, SvUTF8(left)|SVs_TEMP); |
89ea2908 | 1225 | while (!SvNIOKp(sv) && SvCUR(sv) <= len) { |
a0d0e21e | 1226 | XPUSHs(sv); |
b15aece3 | 1227 | if (strEQ(SvPVX_const(sv),tmps)) |
89ea2908 | 1228 | break; |
a0d0e21e LW |
1229 | sv = sv_2mortal(newSVsv(sv)); |
1230 | sv_inc(sv); | |
1231 | } | |
a0d0e21e LW |
1232 | } |
1233 | } | |
1234 | else { | |
1235 | dTOPss; | |
901017d6 | 1236 | SV * const targ = PAD_SV(cUNOP->op_first->op_targ); |
4e3399f9 | 1237 | int flop = 0; |
a0d0e21e | 1238 | sv_inc(targ); |
4e3399f9 YST |
1239 | |
1240 | if (PL_op->op_private & OPpFLIP_LINENUM) { | |
1241 | if (GvIO(PL_last_in_gv)) { | |
1242 | flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1243 | } | |
1244 | else { | |
fafc274c | 1245 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
4e3399f9 YST |
1246 | if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv)); |
1247 | } | |
1248 | } | |
1249 | else { | |
1250 | flop = SvTRUE(sv); | |
1251 | } | |
1252 | ||
1253 | if (flop) { | |
a0d0e21e | 1254 | sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0); |
396482e1 | 1255 | sv_catpvs(targ, "E0"); |
a0d0e21e LW |
1256 | } |
1257 | SETs(targ); | |
1258 | } | |
1259 | ||
1260 | RETURN; | |
1261 | } | |
1262 | ||
1263 | /* Control. */ | |
1264 | ||
27da23d5 | 1265 | static const char * const context_name[] = { |
515afda2 | 1266 | "pseudo-block", |
f31522f3 | 1267 | NULL, /* CXt_WHEN never actually needs "block" */ |
76753e7f | 1268 | NULL, /* CXt_BLOCK never actually needs "block" */ |
f31522f3 | 1269 | NULL, /* CXt_GIVEN never actually needs "block" */ |
76753e7f NC |
1270 | NULL, /* CXt_LOOP_FOR never actually needs "loop" */ |
1271 | NULL, /* CXt_LOOP_PLAIN never actually needs "loop" */ | |
1272 | NULL, /* CXt_LOOP_LAZYSV never actually needs "loop" */ | |
1273 | NULL, /* CXt_LOOP_LAZYIV never actually needs "loop" */ | |
515afda2 | 1274 | "subroutine", |
76753e7f | 1275 | "format", |
515afda2 | 1276 | "eval", |
515afda2 | 1277 | "substitution", |
515afda2 NC |
1278 | }; |
1279 | ||
76e3520e | 1280 | STATIC I32 |
5db1eb8d | 1281 | S_dopoptolabel(pTHX_ const char *label, STRLEN len, U32 flags) |
a0d0e21e | 1282 | { |
97aff369 | 1283 | dVAR; |
eb578fdb | 1284 | I32 i; |
a0d0e21e | 1285 | |
7918f24d NC |
1286 | PERL_ARGS_ASSERT_DOPOPTOLABEL; |
1287 | ||
a0d0e21e | 1288 | for (i = cxstack_ix; i >= 0; i--) { |
eb578fdb | 1289 | const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1290 | switch (CxTYPE(cx)) { |
a0d0e21e | 1291 | case CXt_SUBST: |
a0d0e21e | 1292 | case CXt_SUB: |
7766f137 | 1293 | case CXt_FORMAT: |
a0d0e21e | 1294 | case CXt_EVAL: |
0a753a76 | 1295 | case CXt_NULL: |
dcbac5bb | 1296 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1297 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1298 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1299 | if (CxTYPE(cx) == CXt_NULL) |
1300 | return -1; | |
1301 | break; | |
c6fdafd0 | 1302 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1303 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1304 | case CXt_LOOP_FOR: |
1305 | case CXt_LOOP_PLAIN: | |
7e8f1eac | 1306 | { |
5db1eb8d BF |
1307 | STRLEN cx_label_len = 0; |
1308 | U32 cx_label_flags = 0; | |
1309 | const char *cx_label = CxLABEL_len_flags(cx, &cx_label_len, &cx_label_flags); | |
1310 | if (!cx_label || !( | |
1311 | ( (cx_label_flags & SVf_UTF8) != (flags & SVf_UTF8) ) ? | |
1312 | (flags & SVf_UTF8) | |
1313 | ? (bytes_cmp_utf8( | |
1314 | (const U8*)cx_label, cx_label_len, | |
1315 | (const U8*)label, len) == 0) | |
1316 | : (bytes_cmp_utf8( | |
1317 | (const U8*)label, len, | |
1318 | (const U8*)cx_label, cx_label_len) == 0) | |
eade7155 BF |
1319 | : (len == cx_label_len && ((cx_label == label) |
1320 | || memEQ(cx_label, label, len))) )) { | |
1c98cc53 | 1321 | DEBUG_l(Perl_deb(aTHX_ "(poptolabel(): skipping label at cx=%ld %s)\n", |
7e8f1eac | 1322 | (long)i, cx_label)); |
a0d0e21e LW |
1323 | continue; |
1324 | } | |
1c98cc53 | 1325 | DEBUG_l( Perl_deb(aTHX_ "(poptolabel(): found label at cx=%ld %s)\n", (long)i, label)); |
a0d0e21e | 1326 | return i; |
7e8f1eac | 1327 | } |
a0d0e21e LW |
1328 | } |
1329 | } | |
1330 | return i; | |
1331 | } | |
1332 | ||
0d863452 RH |
1333 | |
1334 | ||
e50aee73 | 1335 | I32 |
864dbfa3 | 1336 | Perl_dowantarray(pTHX) |
e50aee73 | 1337 | { |
97aff369 | 1338 | dVAR; |
f54cb97a | 1339 | const I32 gimme = block_gimme(); |
54310121 | 1340 | return (gimme == G_VOID) ? G_SCALAR : gimme; |
1341 | } | |
1342 | ||
1343 | I32 | |
864dbfa3 | 1344 | Perl_block_gimme(pTHX) |
54310121 | 1345 | { |
97aff369 | 1346 | dVAR; |
06b5626a | 1347 | const I32 cxix = dopoptosub(cxstack_ix); |
e50aee73 | 1348 | if (cxix < 0) |
46fc3d4c | 1349 | return G_VOID; |
e50aee73 | 1350 | |
54310121 | 1351 | switch (cxstack[cxix].blk_gimme) { |
d2719217 GS |
1352 | case G_VOID: |
1353 | return G_VOID; | |
54310121 | 1354 | case G_SCALAR: |
e50aee73 | 1355 | return G_SCALAR; |
54310121 | 1356 | case G_ARRAY: |
1357 | return G_ARRAY; | |
1358 | default: | |
cea2e8a9 | 1359 | Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme); |
118e2215 | 1360 | assert(0); /* NOTREACHED */ |
d2719217 | 1361 | return 0; |
54310121 | 1362 | } |
e50aee73 AD |
1363 | } |
1364 | ||
78f9721b SM |
1365 | I32 |
1366 | Perl_is_lvalue_sub(pTHX) | |
1367 | { | |
97aff369 | 1368 | dVAR; |
06b5626a | 1369 | const I32 cxix = dopoptosub(cxstack_ix); |
78f9721b SM |
1370 | assert(cxix >= 0); /* We should only be called from inside subs */ |
1371 | ||
bafb2adc NC |
1372 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) |
1373 | return CxLVAL(cxstack + cxix); | |
78f9721b SM |
1374 | else |
1375 | return 0; | |
1376 | } | |
1377 | ||
777d9014 FC |
1378 | /* only used by PUSHSUB */ |
1379 | I32 | |
1380 | Perl_was_lvalue_sub(pTHX) | |
1381 | { | |
1382 | dVAR; | |
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 | { |
97aff369 | 1395 | dVAR; |
a0d0e21e | 1396 | I32 i; |
7918f24d NC |
1397 | |
1398 | PERL_ARGS_ASSERT_DOPOPTOSUB_AT; | |
1399 | ||
a0d0e21e | 1400 | for (i = startingblock; i >= 0; i--) { |
eb578fdb | 1401 | const PERL_CONTEXT * const cx = &cxstk[i]; |
6b35e009 | 1402 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1403 | default: |
1404 | continue; | |
a0d0e21e | 1405 | case CXt_SUB: |
5fbe8311 DM |
1406 | /* in sub foo { /(?{...})/ }, foo ends up on the CX stack |
1407 | * twice; the first for the normal foo() call, and the second | |
1408 | * for a faked up re-entry into the sub to execute the | |
1409 | * code block. Hide this faked entry from the world. */ | |
1410 | if (cx->cx_type & CXp_SUB_RE_FAKE) | |
1411 | continue; | |
c67159e1 | 1412 | /* FALLTHROUGH */ |
5fbe8311 | 1413 | case CXt_EVAL: |
7766f137 | 1414 | case CXt_FORMAT: |
1c98cc53 | 1415 | DEBUG_l( Perl_deb(aTHX_ "(dopoptosub_at(): found sub at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1416 | return i; |
1417 | } | |
1418 | } | |
1419 | return i; | |
1420 | } | |
1421 | ||
76e3520e | 1422 | STATIC I32 |
cea2e8a9 | 1423 | S_dopoptoeval(pTHX_ I32 startingblock) |
a0d0e21e | 1424 | { |
97aff369 | 1425 | dVAR; |
a0d0e21e | 1426 | I32 i; |
a0d0e21e | 1427 | for (i = startingblock; i >= 0; i--) { |
eb578fdb | 1428 | const PERL_CONTEXT *cx = &cxstack[i]; |
6b35e009 | 1429 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1430 | default: |
1431 | continue; | |
1432 | case CXt_EVAL: | |
1c98cc53 | 1433 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoeval(): found eval at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1434 | return i; |
1435 | } | |
1436 | } | |
1437 | return i; | |
1438 | } | |
1439 | ||
76e3520e | 1440 | STATIC I32 |
cea2e8a9 | 1441 | S_dopoptoloop(pTHX_ I32 startingblock) |
a0d0e21e | 1442 | { |
97aff369 | 1443 | dVAR; |
a0d0e21e | 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 | { | |
97aff369 | 1473 | dVAR; |
0d863452 RH |
1474 | I32 i; |
1475 | for (i = startingblock; i >= 0; i--) { | |
eb578fdb | 1476 | const PERL_CONTEXT *cx = &cxstack[i]; |
0d863452 RH |
1477 | switch (CxTYPE(cx)) { |
1478 | default: | |
1479 | continue; | |
1480 | case CXt_GIVEN: | |
1c98cc53 | 1481 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found given at cx=%ld)\n", (long)i)); |
0d863452 | 1482 | return i; |
3b719c58 NC |
1483 | case CXt_LOOP_PLAIN: |
1484 | assert(!CxFOREACHDEF(cx)); | |
1485 | break; | |
c6fdafd0 | 1486 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1487 | case CXt_LOOP_LAZYSV: |
3b719c58 | 1488 | case CXt_LOOP_FOR: |
0d863452 | 1489 | if (CxFOREACHDEF(cx)) { |
1c98cc53 | 1490 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found foreach at cx=%ld)\n", (long)i)); |
0d863452 RH |
1491 | return i; |
1492 | } | |
1493 | } | |
1494 | } | |
1495 | return i; | |
1496 | } | |
1497 | ||
1498 | STATIC I32 | |
1499 | S_dopoptowhen(pTHX_ I32 startingblock) | |
1500 | { | |
97aff369 | 1501 | dVAR; |
0d863452 RH |
1502 | I32 i; |
1503 | for (i = startingblock; i >= 0; i--) { | |
eb578fdb | 1504 | const PERL_CONTEXT *cx = &cxstack[i]; |
0d863452 RH |
1505 | switch (CxTYPE(cx)) { |
1506 | default: | |
1507 | continue; | |
1508 | case CXt_WHEN: | |
1c98cc53 | 1509 | DEBUG_l( Perl_deb(aTHX_ "(dopoptowhen(): found when at cx=%ld)\n", (long)i)); |
0d863452 RH |
1510 | return i; |
1511 | } | |
1512 | } | |
1513 | return i; | |
1514 | } | |
1515 | ||
a0d0e21e | 1516 | void |
864dbfa3 | 1517 | Perl_dounwind(pTHX_ I32 cxix) |
a0d0e21e | 1518 | { |
97aff369 | 1519 | dVAR; |
a0d0e21e LW |
1520 | I32 optype; |
1521 | ||
f144f1e3 DM |
1522 | if (!PL_curstackinfo) /* can happen if die during thread cloning */ |
1523 | return; | |
1524 | ||
a0d0e21e | 1525 | while (cxstack_ix > cxix) { |
b0d9ce38 | 1526 | SV *sv; |
eb578fdb | 1527 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1c98cc53 | 1528 | DEBUG_CX("UNWIND"); \ |
a0d0e21e | 1529 | /* Note: we don't need to restore the base context info till the end. */ |
6b35e009 | 1530 | switch (CxTYPE(cx)) { |
c90c0ff4 | 1531 | case CXt_SUBST: |
1532 | POPSUBST(cx); | |
1533 | continue; /* not break */ | |
a0d0e21e | 1534 | case CXt_SUB: |
b0d9ce38 GS |
1535 | POPSUB(cx,sv); |
1536 | LEAVESUB(sv); | |
a0d0e21e LW |
1537 | break; |
1538 | case CXt_EVAL: | |
1539 | POPEVAL(cx); | |
1540 | break; | |
c6fdafd0 | 1541 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1542 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1543 | case CXt_LOOP_FOR: |
1544 | case CXt_LOOP_PLAIN: | |
a0d0e21e LW |
1545 | POPLOOP(cx); |
1546 | break; | |
0a753a76 | 1547 | case CXt_NULL: |
a0d0e21e | 1548 | break; |
7766f137 GS |
1549 | case CXt_FORMAT: |
1550 | POPFORMAT(cx); | |
1551 | break; | |
a0d0e21e | 1552 | } |
c90c0ff4 | 1553 | cxstack_ix--; |
a0d0e21e | 1554 | } |
1b6737cc | 1555 | PERL_UNUSED_VAR(optype); |
a0d0e21e LW |
1556 | } |
1557 | ||
5a844595 GS |
1558 | void |
1559 | Perl_qerror(pTHX_ SV *err) | |
1560 | { | |
97aff369 | 1561 | dVAR; |
7918f24d NC |
1562 | |
1563 | PERL_ARGS_ASSERT_QERROR; | |
1564 | ||
6b2fb389 DM |
1565 | if (PL_in_eval) { |
1566 | if (PL_in_eval & EVAL_KEEPERR) { | |
ecad31f0 BF |
1567 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1568 | SVfARG(err)); | |
6b2fb389 DM |
1569 | } |
1570 | else | |
1571 | sv_catsv(ERRSV, err); | |
1572 | } | |
5a844595 GS |
1573 | else if (PL_errors) |
1574 | sv_catsv(PL_errors, err); | |
1575 | else | |
be2597df | 1576 | Perl_warn(aTHX_ "%"SVf, SVfARG(err)); |
13765c85 DM |
1577 | if (PL_parser) |
1578 | ++PL_parser->error_count; | |
5a844595 GS |
1579 | } |
1580 | ||
bb4c52e0 | 1581 | void |
c5df3096 | 1582 | Perl_die_unwind(pTHX_ SV *msv) |
a0d0e21e | 1583 | { |
27da23d5 | 1584 | dVAR; |
c5df3096 | 1585 | SV *exceptsv = sv_mortalcopy(msv); |
96d9b9cd | 1586 | U8 in_eval = PL_in_eval; |
c5df3096 | 1587 | PERL_ARGS_ASSERT_DIE_UNWIND; |
87582a92 | 1588 | |
96d9b9cd | 1589 | if (in_eval) { |
a0d0e21e | 1590 | I32 cxix; |
a0d0e21e | 1591 | I32 gimme; |
a0d0e21e | 1592 | |
22a30693 Z |
1593 | /* |
1594 | * Historically, perl used to set ERRSV ($@) early in the die | |
1595 | * process and rely on it not getting clobbered during unwinding. | |
1596 | * That sucked, because it was liable to get clobbered, so the | |
1597 | * setting of ERRSV used to emit the exception from eval{} has | |
1598 | * been moved to much later, after unwinding (see just before | |
1599 | * JMPENV_JUMP below). However, some modules were relying on the | |
1600 | * early setting, by examining $@ during unwinding to use it as | |
1601 | * a flag indicating whether the current unwinding was caused by | |
1602 | * an exception. It was never a reliable flag for that purpose, | |
1603 | * being totally open to false positives even without actual | |
1604 | * clobberage, but was useful enough for production code to | |
1605 | * semantically rely on it. | |
1606 | * | |
1607 | * We'd like to have a proper introspective interface that | |
1608 | * explicitly describes the reason for whatever unwinding | |
1609 | * operations are currently in progress, so that those modules | |
1610 | * work reliably and $@ isn't further overloaded. But we don't | |
1611 | * have one yet. In its absence, as a stopgap measure, ERRSV is | |
1612 | * now *additionally* set here, before unwinding, to serve as the | |
1613 | * (unreliable) flag that it used to. | |
1614 | * | |
1615 | * This behaviour is temporary, and should be removed when a | |
1616 | * proper way to detect exceptional unwinding has been developed. | |
1617 | * As of 2010-12, the authors of modules relying on the hack | |
1618 | * are aware of the issue, because the modules failed on | |
1619 | * perls 5.13.{1..7} which had late setting of $@ without this | |
1620 | * early-setting hack. | |
1621 | */ | |
1622 | if (!(in_eval & EVAL_KEEPERR)) { | |
1623 | SvTEMP_off(exceptsv); | |
1624 | sv_setsv(ERRSV, exceptsv); | |
1625 | } | |
1626 | ||
fc941f37 Z |
1627 | if (in_eval & EVAL_KEEPERR) { |
1628 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, | |
1629 | SVfARG(exceptsv)); | |
1630 | } | |
1631 | ||
5a844595 GS |
1632 | while ((cxix = dopoptoeval(cxstack_ix)) < 0 |
1633 | && PL_curstackinfo->si_prev) | |
1634 | { | |
bac4b2ad | 1635 | dounwind(-1); |
d3acc0f7 | 1636 | POPSTACK; |
bac4b2ad | 1637 | } |
e336de0d | 1638 | |
a0d0e21e LW |
1639 | if (cxix >= 0) { |
1640 | I32 optype; | |
b6494f15 | 1641 | SV *namesv; |
eb578fdb | 1642 | PERL_CONTEXT *cx; |
901017d6 | 1643 | SV **newsp; |
8f89e5a9 Z |
1644 | COP *oldcop; |
1645 | JMPENV *restartjmpenv; | |
1646 | OP *restartop; | |
a0d0e21e LW |
1647 | |
1648 | if (cxix < cxstack_ix) | |
1649 | dounwind(cxix); | |
1650 | ||
3280af22 | 1651 | POPBLOCK(cx,PL_curpm); |
6b35e009 | 1652 | if (CxTYPE(cx) != CXt_EVAL) { |
7d0994e0 | 1653 | STRLEN msglen; |
96d9b9cd | 1654 | const char* message = SvPVx_const(exceptsv, msglen); |
10edeb5d | 1655 | PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11); |
bf49b057 | 1656 | PerlIO_write(Perl_error_log, message, msglen); |
a0d0e21e LW |
1657 | my_exit(1); |
1658 | } | |
1659 | POPEVAL(cx); | |
b6494f15 | 1660 | namesv = cx->blk_eval.old_namesv; |
8f89e5a9 Z |
1661 | oldcop = cx->blk_oldcop; |
1662 | restartjmpenv = cx->blk_eval.cur_top_env; | |
1663 | restartop = cx->blk_eval.retop; | |
a0d0e21e LW |
1664 | |
1665 | if (gimme == G_SCALAR) | |
3280af22 NIS |
1666 | *++newsp = &PL_sv_undef; |
1667 | PL_stack_sp = newsp; | |
a0d0e21e LW |
1668 | |
1669 | LEAVE; | |
748a9306 | 1670 | |
7fb6a879 GS |
1671 | /* LEAVE could clobber PL_curcop (see save_re_context()) |
1672 | * XXX it might be better to find a way to avoid messing with | |
1673 | * PL_curcop in save_re_context() instead, but this is a more | |
1674 | * minimal fix --GSAR */ | |
8f89e5a9 | 1675 | PL_curcop = oldcop; |
7fb6a879 | 1676 | |
7a2e2cd6 | 1677 | if (optype == OP_REQUIRE) { |
b6494f15 | 1678 | (void)hv_store(GvHVn(PL_incgv), |
ecad31f0 | 1679 | SvPVX_const(namesv), |
c60dbbc3 | 1680 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
27bcc0a7 | 1681 | &PL_sv_undef, 0); |
27e90453 DM |
1682 | /* note that unlike pp_entereval, pp_require isn't |
1683 | * supposed to trap errors. So now that we've popped the | |
1684 | * EVAL that pp_require pushed, and processed the error | |
1685 | * message, rethrow the error */ | |
ecad31f0 BF |
1686 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
1687 | SVfARG(exceptsv ? exceptsv : newSVpvs_flags("Unknown error\n", | |
1688 | SVs_TEMP))); | |
7a2e2cd6 | 1689 | } |
fc941f37 | 1690 | if (!(in_eval & EVAL_KEEPERR)) |
96d9b9cd | 1691 | sv_setsv(ERRSV, exceptsv); |
8f89e5a9 Z |
1692 | PL_restartjmpenv = restartjmpenv; |
1693 | PL_restartop = restartop; | |
bb4c52e0 | 1694 | JMPENV_JUMP(3); |
118e2215 | 1695 | assert(0); /* NOTREACHED */ |
a0d0e21e LW |
1696 | } |
1697 | } | |
87582a92 | 1698 | |
96d9b9cd | 1699 | write_to_stderr(exceptsv); |
f86702cc | 1700 | my_failure_exit(); |
118e2215 | 1701 | assert(0); /* NOTREACHED */ |
a0d0e21e LW |
1702 | } |
1703 | ||
1704 | PP(pp_xor) | |
1705 | { | |
97aff369 | 1706 | dVAR; dSP; dPOPTOPssrl; |
a0d0e21e LW |
1707 | if (SvTRUE(left) != SvTRUE(right)) |
1708 | RETSETYES; | |
1709 | else | |
1710 | RETSETNO; | |
1711 | } | |
1712 | ||
8dff4fc5 BM |
1713 | /* |
1714 | =for apidoc caller_cx | |
1715 | ||
72d33970 | 1716 | The XSUB-writer's equivalent of L<caller()|perlfunc/caller>. The |
8dff4fc5 | 1717 | returned C<PERL_CONTEXT> structure can be interrogated to find all the |
72d33970 | 1718 | information returned to Perl by C<caller>. Note that XSUBs don't get a |
8dff4fc5 BM |
1719 | stack frame, so C<caller_cx(0, NULL)> will return information for the |
1720 | immediately-surrounding Perl code. | |
1721 | ||
1722 | This function skips over the automatic calls to C<&DB::sub> made on the | |
72d33970 | 1723 | behalf of the debugger. If the stack frame requested was a sub called by |
8dff4fc5 BM |
1724 | C<DB::sub>, the return value will be the frame for the call to |
1725 | C<DB::sub>, since that has the correct line number/etc. for the call | |
72d33970 | 1726 | site. If I<dbcxp> is non-C<NULL>, it will be set to a pointer to the |
8dff4fc5 BM |
1727 | frame for the sub call itself. |
1728 | ||
1729 | =cut | |
1730 | */ | |
1731 | ||
1732 | const PERL_CONTEXT * | |
1733 | Perl_caller_cx(pTHX_ I32 count, const PERL_CONTEXT **dbcxp) | |
a0d0e21e | 1734 | { |
eb578fdb KW |
1735 | I32 cxix = dopoptosub(cxstack_ix); |
1736 | const PERL_CONTEXT *cx; | |
1737 | const PERL_CONTEXT *ccstack = cxstack; | |
901017d6 | 1738 | const PERL_SI *top_si = PL_curstackinfo; |
27d41816 | 1739 | |
a0d0e21e | 1740 | for (;;) { |
2c375eb9 GS |
1741 | /* we may be in a higher stacklevel, so dig down deeper */ |
1742 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { | |
1743 | top_si = top_si->si_prev; | |
1744 | ccstack = top_si->si_cxstack; | |
1745 | cxix = dopoptosub_at(ccstack, top_si->si_cxix); | |
1746 | } | |
8dff4fc5 BM |
1747 | if (cxix < 0) |
1748 | return NULL; | |
f2a7f298 DG |
1749 | /* caller() should not report the automatic calls to &DB::sub */ |
1750 | if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 && | |
3280af22 | 1751 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
a0d0e21e LW |
1752 | count++; |
1753 | if (!count--) | |
1754 | break; | |
2c375eb9 | 1755 | cxix = dopoptosub_at(ccstack, cxix - 1); |
a0d0e21e | 1756 | } |
2c375eb9 GS |
1757 | |
1758 | cx = &ccstack[cxix]; | |
8dff4fc5 BM |
1759 | if (dbcxp) *dbcxp = cx; |
1760 | ||
7766f137 | 1761 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
f54cb97a | 1762 | const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1); |
2c375eb9 | 1763 | /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the |
06a5b730 | 1764 | field below is defined for any cx. */ |
f2a7f298 DG |
1765 | /* caller() should not report the automatic calls to &DB::sub */ |
1766 | if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) | |
2c375eb9 | 1767 | cx = &ccstack[dbcxix]; |
06a5b730 | 1768 | } |
1769 | ||
8dff4fc5 BM |
1770 | return cx; |
1771 | } | |
1772 | ||
1773 | PP(pp_caller) | |
1774 | { | |
1775 | dVAR; | |
1776 | dSP; | |
eb578fdb | 1777 | const PERL_CONTEXT *cx; |
8dff4fc5 BM |
1778 | const PERL_CONTEXT *dbcx; |
1779 | I32 gimme; | |
d527ce7c | 1780 | const HEK *stash_hek; |
8dff4fc5 | 1781 | I32 count = 0; |
ce0b554b | 1782 | bool has_arg = MAXARG && TOPs; |
25502127 | 1783 | const COP *lcop; |
8dff4fc5 | 1784 | |
ce0b554b FC |
1785 | if (MAXARG) { |
1786 | if (has_arg) | |
8dff4fc5 | 1787 | count = POPi; |
ce0b554b FC |
1788 | else (void)POPs; |
1789 | } | |
8dff4fc5 | 1790 | |
ce0b554b | 1791 | cx = caller_cx(count + !!(PL_op->op_private & OPpOFFBYONE), &dbcx); |
8dff4fc5 BM |
1792 | if (!cx) { |
1793 | if (GIMME != G_ARRAY) { | |
1794 | EXTEND(SP, 1); | |
1795 | RETPUSHUNDEF; | |
1796 | } | |
1797 | RETURN; | |
1798 | } | |
1799 | ||
fb55feef | 1800 | DEBUG_CX("CALLER"); |
d0279c7c | 1801 | assert(CopSTASH(cx->blk_oldcop)); |
e7886211 FC |
1802 | stash_hek = SvTYPE(CopSTASH(cx->blk_oldcop)) == SVt_PVHV |
1803 | ? HvNAME_HEK((HV*)CopSTASH(cx->blk_oldcop)) | |
1804 | : NULL; | |
a0d0e21e | 1805 | if (GIMME != G_ARRAY) { |
27d41816 | 1806 | EXTEND(SP, 1); |
d527ce7c | 1807 | if (!stash_hek) |
3280af22 | 1808 | PUSHs(&PL_sv_undef); |
49d8d3a1 MB |
1809 | else { |
1810 | dTARGET; | |
d527ce7c | 1811 | sv_sethek(TARG, stash_hek); |
49d8d3a1 MB |
1812 | PUSHs(TARG); |
1813 | } | |
a0d0e21e LW |
1814 | RETURN; |
1815 | } | |
a0d0e21e | 1816 | |
b3ca2e83 | 1817 | EXTEND(SP, 11); |
27d41816 | 1818 | |
d527ce7c | 1819 | if (!stash_hek) |
3280af22 | 1820 | PUSHs(&PL_sv_undef); |
d527ce7c BF |
1821 | else { |
1822 | dTARGET; | |
1823 | sv_sethek(TARG, stash_hek); | |
1824 | PUSHTARG; | |
1825 | } | |
6e449a3a | 1826 | mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0)); |
25502127 FC |
1827 | lcop = closest_cop(cx->blk_oldcop, cx->blk_oldcop->op_sibling, |
1828 | cx->blk_sub.retop, TRUE); | |
1829 | if (!lcop) | |
1830 | lcop = cx->blk_oldcop; | |
1831 | mPUSHi((I32)CopLINE(lcop)); | |
ce0b554b | 1832 | if (!has_arg) |
a0d0e21e | 1833 | RETURN; |
7766f137 | 1834 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
8dff4fc5 | 1835 | GV * const cvgv = CvGV(dbcx->blk_sub.cv); |
7766f137 | 1836 | /* So is ccstack[dbcxix]. */ |
81ed78b2 | 1837 | if (cvgv && isGV(cvgv)) { |
561b68a9 | 1838 | SV * const sv = newSV(0); |
c445ea15 | 1839 | gv_efullname3(sv, cvgv, NULL); |
6e449a3a | 1840 | mPUSHs(sv); |
bf38a478 | 1841 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 RGS |
1842 | } |
1843 | else { | |
84bafc02 | 1844 | PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP)); |
bf38a478 | 1845 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 | 1846 | } |
a0d0e21e LW |
1847 | } |
1848 | else { | |
84bafc02 | 1849 | PUSHs(newSVpvs_flags("(eval)", SVs_TEMP)); |
6e449a3a | 1850 | mPUSHi(0); |
a0d0e21e | 1851 | } |
54310121 | 1852 | gimme = (I32)cx->blk_gimme; |
1853 | if (gimme == G_VOID) | |
3280af22 | 1854 | PUSHs(&PL_sv_undef); |
54310121 | 1855 | else |
98625aca | 1856 | PUSHs(boolSV((gimme & G_WANT) == G_ARRAY)); |
6b35e009 | 1857 | if (CxTYPE(cx) == CXt_EVAL) { |
811a4de9 | 1858 | /* eval STRING */ |
85a64632 | 1859 | if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) { |
78beb4ca TC |
1860 | SV *cur_text = cx->blk_eval.cur_text; |
1861 | if (SvCUR(cur_text) >= 2) { | |
1862 | PUSHs(newSVpvn_flags(SvPVX(cur_text), SvCUR(cur_text)-2, | |
1863 | SvUTF8(cur_text)|SVs_TEMP)); | |
1864 | } | |
1865 | else { | |
1866 | /* I think this is will always be "", but be sure */ | |
1867 | PUSHs(sv_2mortal(newSVsv(cur_text))); | |
1868 | } | |
1869 | ||
3280af22 | 1870 | PUSHs(&PL_sv_no); |
0f79a09d | 1871 | } |
811a4de9 | 1872 | /* require */ |
0f79a09d | 1873 | else if (cx->blk_eval.old_namesv) { |
6e449a3a | 1874 | mPUSHs(newSVsv(cx->blk_eval.old_namesv)); |
3280af22 | 1875 | PUSHs(&PL_sv_yes); |
06a5b730 | 1876 | } |
811a4de9 GS |
1877 | /* eval BLOCK (try blocks have old_namesv == 0) */ |
1878 | else { | |
1879 | PUSHs(&PL_sv_undef); | |
1880 | PUSHs(&PL_sv_undef); | |
1881 | } | |
4633a7c4 | 1882 | } |
a682de96 GS |
1883 | else { |
1884 | PUSHs(&PL_sv_undef); | |
1885 | PUSHs(&PL_sv_undef); | |
1886 | } | |
bafb2adc | 1887 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx) |
ed094faf | 1888 | && CopSTASH_eq(PL_curcop, PL_debstash)) |
4633a7c4 | 1889 | { |
66a1b24b | 1890 | AV * const ary = cx->blk_sub.argarray; |
c70927a6 | 1891 | const SSize_t off = AvARRAY(ary) - AvALLOC(ary); |
a0d0e21e | 1892 | |
e1a80902 | 1893 | Perl_init_dbargs(aTHX); |
a0d0e21e | 1894 | |
3280af22 NIS |
1895 | if (AvMAX(PL_dbargs) < AvFILLp(ary) + off) |
1896 | av_extend(PL_dbargs, AvFILLp(ary) + off); | |
1897 | Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*); | |
1898 | AvFILLp(PL_dbargs) = AvFILLp(ary) + off; | |
a0d0e21e | 1899 | } |
6e449a3a | 1900 | mPUSHi(CopHINTS_get(cx->blk_oldcop)); |
e476b1b5 GS |
1901 | { |
1902 | SV * mask ; | |
72dc9ed5 | 1903 | STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ; |
114bafba | 1904 | |
f07626ad | 1905 | if (old_warnings == pWARN_NONE) |
e476b1b5 | 1906 | mask = newSVpvn(WARN_NONEstring, WARNsize) ; |
f07626ad FC |
1907 | else if (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0) |
1908 | mask = &PL_sv_undef ; | |
ac27b0f5 | 1909 | else if (old_warnings == pWARN_ALL || |
75b6c4ca RGS |
1910 | (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) { |
1911 | /* Get the bit mask for $warnings::Bits{all}, because | |
1912 | * it could have been extended by warnings::register */ | |
1913 | SV **bits_all; | |
6673a63c | 1914 | HV * const bits = get_hv("warnings::Bits", 0); |
017a3ce5 | 1915 | if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) { |
75b6c4ca RGS |
1916 | mask = newSVsv(*bits_all); |
1917 | } | |
1918 | else { | |
1919 | mask = newSVpvn(WARN_ALLstring, WARNsize) ; | |
1920 | } | |
1921 | } | |
e476b1b5 | 1922 | else |
72dc9ed5 | 1923 | mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]); |
6e449a3a | 1924 | mPUSHs(mask); |
e476b1b5 | 1925 | } |
b3ca2e83 | 1926 | |
c28fe1ec | 1927 | PUSHs(cx->blk_oldcop->cop_hints_hash ? |
20439bc7 | 1928 | sv_2mortal(newRV_noinc(MUTABLE_SV(cop_hints_2hv(cx->blk_oldcop, 0)))) |
b3ca2e83 | 1929 | : &PL_sv_undef); |
a0d0e21e LW |
1930 | RETURN; |
1931 | } | |
1932 | ||
a0d0e21e LW |
1933 | PP(pp_reset) |
1934 | { | |
97aff369 | 1935 | dVAR; |
39644a26 | 1936 | dSP; |
ca826051 FC |
1937 | const char * tmps; |
1938 | STRLEN len = 0; | |
1939 | if (MAXARG < 1 || (!TOPs && !POPs)) | |
1940 | tmps = NULL, len = 0; | |
1941 | else | |
1942 | tmps = SvPVx_const(POPs, len); | |
1943 | sv_resetpvn(tmps, len, CopSTASH(PL_curcop)); | |
3280af22 | 1944 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
1945 | RETURN; |
1946 | } | |
1947 | ||
dd2155a4 DM |
1948 | /* like pp_nextstate, but used instead when the debugger is active */ |
1949 | ||
a0d0e21e LW |
1950 | PP(pp_dbstate) |
1951 | { | |
27da23d5 | 1952 | dVAR; |
533c011a | 1953 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 1954 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 1955 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
1956 | FREETMPS; |
1957 | ||
f410a211 NC |
1958 | PERL_ASYNC_CHECK(); |
1959 | ||
88df5f01 | 1960 | if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */ |
5df8de69 | 1961 | || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace)) |
a0d0e21e | 1962 | { |
39644a26 | 1963 | dSP; |
eb578fdb | 1964 | PERL_CONTEXT *cx; |
f54cb97a | 1965 | const I32 gimme = G_ARRAY; |
eb160463 | 1966 | U8 hasargs; |
0bd48802 | 1967 | GV * const gv = PL_DBgv; |
432d4561 JL |
1968 | CV * cv = NULL; |
1969 | ||
1970 | if (gv && isGV_with_GP(gv)) | |
1971 | cv = GvCV(gv); | |
a0d0e21e | 1972 | |
c2cb6f77 | 1973 | if (!cv || (!CvROOT(cv) && !CvXSUB(cv))) |
cea2e8a9 | 1974 | DIE(aTHX_ "No DB::DB routine defined"); |
a0d0e21e | 1975 | |
aea4f609 DM |
1976 | if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG)) |
1977 | /* don't do recursive DB::DB call */ | |
a0d0e21e | 1978 | return NORMAL; |
748a9306 | 1979 | |
a57c6685 | 1980 | ENTER; |
4633a7c4 LW |
1981 | SAVETMPS; |
1982 | ||
3280af22 | 1983 | SAVEI32(PL_debug); |
55497cff | 1984 | SAVESTACK_POS(); |
3280af22 | 1985 | PL_debug = 0; |
748a9306 | 1986 | hasargs = 0; |
924508f0 | 1987 | SPAGAIN; |
748a9306 | 1988 | |
aed2304a | 1989 | if (CvISXSUB(cv)) { |
c127bd3a SF |
1990 | PUSHMARK(SP); |
1991 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
c127bd3a | 1992 | FREETMPS; |
a57c6685 | 1993 | LEAVE; |
c127bd3a SF |
1994 | return NORMAL; |
1995 | } | |
1996 | else { | |
1997 | PUSHBLOCK(cx, CXt_SUB, SP); | |
1998 | PUSHSUB_DB(cx); | |
1999 | cx->blk_sub.retop = PL_op->op_next; | |
2000 | CvDEPTH(cv)++; | |
9d976ff5 FC |
2001 | if (CvDEPTH(cv) >= 2) { |
2002 | PERL_STACK_OVERFLOW_CHECK(); | |
2003 | pad_push(CvPADLIST(cv), CvDEPTH(cv)); | |
2004 | } | |
c127bd3a | 2005 | SAVECOMPPAD(); |
9d976ff5 | 2006 | PAD_SET_CUR_NOSAVE(CvPADLIST(cv), CvDEPTH(cv)); |
c127bd3a SF |
2007 | RETURNOP(CvSTART(cv)); |
2008 | } | |
a0d0e21e LW |
2009 | } |
2010 | else | |
2011 | return NORMAL; | |
2012 | } | |
2013 | ||
2ec7f6f2 FC |
2014 | /* SVs on the stack that have any of the flags passed in are left as is. |
2015 | Other SVs are protected via the mortals stack if lvalue is true, and | |
2016 | copied otherwise. */ | |
2017 | ||
b9d76716 | 2018 | STATIC SV ** |
2ec7f6f2 FC |
2019 | S_adjust_stack_on_leave(pTHX_ SV **newsp, SV **sp, SV **mark, I32 gimme, |
2020 | U32 flags, bool lvalue) | |
b9d76716 | 2021 | { |
9a214eec | 2022 | bool padtmp = 0; |
b9d76716 VP |
2023 | PERL_ARGS_ASSERT_ADJUST_STACK_ON_LEAVE; |
2024 | ||
9a214eec DM |
2025 | if (flags & SVs_PADTMP) { |
2026 | flags &= ~SVs_PADTMP; | |
2027 | padtmp = 1; | |
2028 | } | |
b9d76716 VP |
2029 | if (gimme == G_SCALAR) { |
2030 | if (MARK < SP) | |
9a214eec | 2031 | *++newsp = ((SvFLAGS(*SP) & flags) || (padtmp && SvPADTMP(*SP))) |
2ec7f6f2 FC |
2032 | ? *SP |
2033 | : lvalue | |
2034 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) | |
2035 | : sv_mortalcopy(*SP); | |
b9d76716 VP |
2036 | else { |
2037 | /* MEXTEND() only updates MARK, so reuse it instead of newsp. */ | |
2038 | MARK = newsp; | |
2039 | MEXTEND(MARK, 1); | |
2040 | *++MARK = &PL_sv_undef; | |
2041 | return MARK; | |
2042 | } | |
2043 | } | |
2044 | else if (gimme == G_ARRAY) { | |
2045 | /* in case LEAVE wipes old return values */ | |
2046 | while (++MARK <= SP) { | |
9a214eec | 2047 | if ((SvFLAGS(*MARK) & flags) || (padtmp && SvPADTMP(*MARK))) |
b9d76716 VP |
2048 | *++newsp = *MARK; |
2049 | else { | |
2ec7f6f2 FC |
2050 | *++newsp = lvalue |
2051 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)) | |
2052 | : sv_mortalcopy(*MARK); | |
b9d76716 VP |
2053 | TAINT_NOT; /* Each item is independent */ |
2054 | } | |
2055 | } | |
2056 | /* When this function was called with MARK == newsp, we reach this | |
2057 | * point with SP == newsp. */ | |
2058 | } | |
2059 | ||
2060 | return newsp; | |
2061 | } | |
2062 | ||
2b9a6457 VP |
2063 | PP(pp_enter) |
2064 | { | |
2065 | dVAR; dSP; | |
eb578fdb | 2066 | PERL_CONTEXT *cx; |
7c2d9d03 | 2067 | I32 gimme = GIMME_V; |
2b9a6457 VP |
2068 | |
2069 | ENTER_with_name("block"); | |
2070 | ||
2071 | SAVETMPS; | |
2072 | PUSHBLOCK(cx, CXt_BLOCK, SP); | |
2073 | ||
2074 | RETURN; | |
2075 | } | |
2076 | ||
2077 | PP(pp_leave) | |
2078 | { | |
2079 | dVAR; dSP; | |
eb578fdb | 2080 | PERL_CONTEXT *cx; |
2b9a6457 VP |
2081 | SV **newsp; |
2082 | PMOP *newpm; | |
2083 | I32 gimme; | |
2084 | ||
2085 | if (PL_op->op_flags & OPf_SPECIAL) { | |
2086 | cx = &cxstack[cxstack_ix]; | |
2087 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ | |
2088 | } | |
2089 | ||
2090 | POPBLOCK(cx,newpm); | |
2091 | ||
2092 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); | |
2093 | ||
2094 | TAINT_NOT; | |
2ec7f6f2 FC |
2095 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, SVs_PADTMP|SVs_TEMP, |
2096 | PL_op->op_private & OPpLVALUE); | |
2b9a6457 VP |
2097 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
2098 | ||
2099 | LEAVE_with_name("block"); | |
2100 | ||
2101 | RETURN; | |
2102 | } | |
2103 | ||
a0d0e21e LW |
2104 | PP(pp_enteriter) |
2105 | { | |
27da23d5 | 2106 | dVAR; dSP; dMARK; |
eb578fdb | 2107 | PERL_CONTEXT *cx; |
f54cb97a | 2108 | const I32 gimme = GIMME_V; |
df530c37 | 2109 | void *itervar; /* location of the iteration variable */ |
840fe433 | 2110 | U8 cxtype = CXt_LOOP_FOR; |
a0d0e21e | 2111 | |
d343c3ef | 2112 | ENTER_with_name("loop1"); |
4633a7c4 LW |
2113 | SAVETMPS; |
2114 | ||
aafca525 DM |
2115 | if (PL_op->op_targ) { /* "my" variable */ |
2116 | if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */ | |
14f338dc DM |
2117 | SvPADSTALE_off(PAD_SVl(PL_op->op_targ)); |
2118 | SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ), | |
2119 | SVs_PADSTALE, SVs_PADSTALE); | |
2120 | } | |
09edbca0 | 2121 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); |
89e00a7c | 2122 | #ifdef USE_ITHREADS |
df530c37 | 2123 | itervar = PL_comppad; |
89e00a7c | 2124 | #else |
aafca525 | 2125 | itervar = &PAD_SVl(PL_op->op_targ); |
7766f137 | 2126 | #endif |
54b9620d | 2127 | } |
aafca525 | 2128 | else { /* symbol table variable */ |
159b6efe | 2129 | GV * const gv = MUTABLE_GV(POPs); |
f83b46a0 DM |
2130 | SV** svp = &GvSV(gv); |
2131 | save_pushptrptr(gv, SvREFCNT_inc(*svp), SAVEt_GVSV); | |
561b68a9 | 2132 | *svp = newSV(0); |
df530c37 | 2133 | itervar = (void *)gv; |
54b9620d | 2134 | } |
4633a7c4 | 2135 | |
0d863452 RH |
2136 | if (PL_op->op_private & OPpITER_DEF) |
2137 | cxtype |= CXp_FOR_DEF; | |
2138 | ||
d343c3ef | 2139 | ENTER_with_name("loop2"); |
a0d0e21e | 2140 | |
7766f137 | 2141 | PUSHBLOCK(cx, cxtype, SP); |
df530c37 | 2142 | PUSHLOOP_FOR(cx, itervar, MARK); |
533c011a | 2143 | if (PL_op->op_flags & OPf_STACKED) { |
d01136d6 BS |
2144 | SV *maybe_ary = POPs; |
2145 | if (SvTYPE(maybe_ary) != SVt_PVAV) { | |
89ea2908 | 2146 | dPOPss; |
d01136d6 | 2147 | SV * const right = maybe_ary; |
984a4bea RD |
2148 | SvGETMAGIC(sv); |
2149 | SvGETMAGIC(right); | |
4fe3f0fa | 2150 | if (RANGE_IS_NUMERIC(sv,right)) { |
d01136d6 | 2151 | cx->cx_type &= ~CXTYPEMASK; |
c6fdafd0 NC |
2152 | cx->cx_type |= CXt_LOOP_LAZYIV; |
2153 | /* Make sure that no-one re-orders cop.h and breaks our | |
2154 | assumptions */ | |
2155 | assert(CxTYPE(cx) == CXt_LOOP_LAZYIV); | |
a2309040 | 2156 | #ifdef NV_PRESERVES_UV |
f52e41ad FC |
2157 | if ((SvOK(sv) && ((SvNV_nomg(sv) < (NV)IV_MIN) || |
2158 | (SvNV_nomg(sv) > (NV)IV_MAX))) | |
a2309040 | 2159 | || |
f52e41ad FC |
2160 | (SvOK(right) && ((SvNV_nomg(right) > (NV)IV_MAX) || |
2161 | (SvNV_nomg(right) < (NV)IV_MIN)))) | |
a2309040 | 2162 | #else |
f52e41ad | 2163 | if ((SvOK(sv) && ((SvNV_nomg(sv) <= (NV)IV_MIN) |
a2309040 | 2164 | || |
f52e41ad FC |
2165 | ((SvNV_nomg(sv) > 0) && |
2166 | ((SvUV_nomg(sv) > (UV)IV_MAX) || | |
2167 | (SvNV_nomg(sv) > (NV)UV_MAX))))) | |
a2309040 | 2168 | || |
f52e41ad | 2169 | (SvOK(right) && ((SvNV_nomg(right) <= (NV)IV_MIN) |
a2309040 | 2170 | || |
f52e41ad FC |
2171 | ((SvNV_nomg(right) > 0) && |
2172 | ((SvUV_nomg(right) > (UV)IV_MAX) || | |
2173 | (SvNV_nomg(right) > (NV)UV_MAX)) | |
2174 | )))) | |
a2309040 | 2175 | #endif |
076d9a11 | 2176 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
2177 | cx->blk_loop.state_u.lazyiv.cur = SvIV_nomg(sv); |
2178 | cx->blk_loop.state_u.lazyiv.end = SvIV_nomg(right); | |
d4665a05 DM |
2179 | #ifdef DEBUGGING |
2180 | /* for correct -Dstv display */ | |
2181 | cx->blk_oldsp = sp - PL_stack_base; | |
2182 | #endif | |
89ea2908 | 2183 | } |
3f63a782 | 2184 | else { |
d01136d6 BS |
2185 | cx->cx_type &= ~CXTYPEMASK; |
2186 | cx->cx_type |= CXt_LOOP_LAZYSV; | |
2187 | /* Make sure that no-one re-orders cop.h and breaks our | |
2188 | assumptions */ | |
2189 | assert(CxTYPE(cx) == CXt_LOOP_LAZYSV); | |
2190 | cx->blk_loop.state_u.lazysv.cur = newSVsv(sv); | |
2191 | cx->blk_loop.state_u.lazysv.end = right; | |
2192 | SvREFCNT_inc(right); | |
2193 | (void) SvPV_force_nolen(cx->blk_loop.state_u.lazysv.cur); | |
267cc4a8 NC |
2194 | /* This will do the upgrade to SVt_PV, and warn if the value |
2195 | is uninitialised. */ | |
10516c54 | 2196 | (void) SvPV_nolen_const(right); |
267cc4a8 NC |
2197 | /* Doing this avoids a check every time in pp_iter in pp_hot.c |
2198 | to replace !SvOK() with a pointer to "". */ | |
2199 | if (!SvOK(right)) { | |
2200 | SvREFCNT_dec(right); | |
d01136d6 | 2201 | cx->blk_loop.state_u.lazysv.end = &PL_sv_no; |
267cc4a8 | 2202 | } |
3f63a782 | 2203 | } |
89ea2908 | 2204 | } |
d01136d6 | 2205 | else /* SvTYPE(maybe_ary) == SVt_PVAV */ { |
502c6561 | 2206 | cx->blk_loop.state_u.ary.ary = MUTABLE_AV(maybe_ary); |
d01136d6 BS |
2207 | SvREFCNT_inc(maybe_ary); |
2208 | cx->blk_loop.state_u.ary.ix = | |
2209 | (PL_op->op_private & OPpITER_REVERSED) ? | |
2210 | AvFILL(cx->blk_loop.state_u.ary.ary) + 1 : | |
2211 | -1; | |
ef3e5ea9 | 2212 | } |
89ea2908 | 2213 | } |
d01136d6 BS |
2214 | else { /* iterating over items on the stack */ |
2215 | cx->blk_loop.state_u.ary.ary = NULL; /* means to use the stack */ | |
ef3e5ea9 | 2216 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 | 2217 | cx->blk_loop.state_u.ary.ix = cx->blk_oldsp + 1; |
ef3e5ea9 NC |
2218 | } |
2219 | else { | |
d01136d6 | 2220 | cx->blk_loop.state_u.ary.ix = MARK - PL_stack_base; |
ef3e5ea9 | 2221 | } |
4633a7c4 | 2222 | } |
a0d0e21e LW |
2223 | |
2224 | RETURN; | |
2225 | } | |
2226 | ||
2227 | PP(pp_enterloop) | |
2228 | { | |
27da23d5 | 2229 | dVAR; dSP; |
eb578fdb | 2230 | PERL_CONTEXT *cx; |
f54cb97a | 2231 | const I32 gimme = GIMME_V; |
a0d0e21e | 2232 | |
d343c3ef | 2233 | ENTER_with_name("loop1"); |
a0d0e21e | 2234 | SAVETMPS; |
d343c3ef | 2235 | ENTER_with_name("loop2"); |
a0d0e21e | 2236 | |
3b719c58 NC |
2237 | PUSHBLOCK(cx, CXt_LOOP_PLAIN, SP); |
2238 | PUSHLOOP_PLAIN(cx, SP); | |
a0d0e21e LW |
2239 | |
2240 | RETURN; | |
2241 | } | |
2242 | ||
2243 | PP(pp_leaveloop) | |
2244 | { | |
27da23d5 | 2245 | dVAR; dSP; |
eb578fdb | 2246 | PERL_CONTEXT *cx; |
a0d0e21e LW |
2247 | I32 gimme; |
2248 | SV **newsp; | |
2249 | PMOP *newpm; | |
2250 | SV **mark; | |
2251 | ||
2252 | POPBLOCK(cx,newpm); | |
3b719c58 | 2253 | assert(CxTYPE_is_LOOP(cx)); |
4fdae800 | 2254 | mark = newsp; |
a8bba7fa | 2255 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
f86702cc | 2256 | |
a1f49e72 | 2257 | TAINT_NOT; |
a373464f FC |
2258 | SP = adjust_stack_on_leave(newsp, SP, MARK, gimme, 0, |
2259 | PL_op->op_private & OPpLVALUE); | |
f86702cc | 2260 | PUTBACK; |
2261 | ||
a8bba7fa | 2262 | POPLOOP(cx); /* Stack values are safe: release loop vars ... */ |
3280af22 | 2263 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2264 | |
d343c3ef GG |
2265 | LEAVE_with_name("loop2"); |
2266 | LEAVE_with_name("loop1"); | |
a0d0e21e | 2267 | |
f86702cc | 2268 | return NORMAL; |
a0d0e21e LW |
2269 | } |
2270 | ||
3bdf583b FC |
2271 | STATIC void |
2272 | S_return_lvalues(pTHX_ SV **mark, SV **sp, SV **newsp, I32 gimme, | |
d25b0d7b | 2273 | PERL_CONTEXT *cx, PMOP *newpm) |
3bdf583b | 2274 | { |
80422e24 | 2275 | const bool ref = !!(CxLVAL(cx) & OPpENTERSUB_INARGS); |
3bdf583b | 2276 | if (gimme == G_SCALAR) { |
d25b0d7b FC |
2277 | if (CxLVAL(cx) && !ref) { /* Leave it as it is if we can. */ |
2278 | SV *sv; | |
001de122 | 2279 | const char *what = NULL; |
d25b0d7b FC |
2280 | if (MARK < SP) { |
2281 | assert(MARK+1 == SP); | |
2282 | if ((SvPADTMP(TOPs) || | |
2283 | (SvFLAGS(TOPs) & (SVf_READONLY | SVf_FAKE)) | |
2284 | == SVf_READONLY | |
2285 | ) && | |
2286 | !SvSMAGICAL(TOPs)) { | |
001de122 | 2287 | what = |
d25b0d7b | 2288 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
001de122 | 2289 | : "a readonly value" : "a temporary"; |
d25b0d7b | 2290 | } |
001de122 | 2291 | else goto copy_sv; |
d25b0d7b FC |
2292 | } |
2293 | else { | |
2294 | /* sub:lvalue{} will take us here. */ | |
001de122 | 2295 | what = "undef"; |
d25b0d7b | 2296 | } |
001de122 FC |
2297 | LEAVE; |
2298 | cxstack_ix--; | |
2299 | POPSUB(cx,sv); | |
2300 | PL_curpm = newpm; | |
2301 | LEAVESUB(sv); | |
2302 | Perl_croak(aTHX_ | |
2303 | "Can't return %s from lvalue subroutine", what | |
2304 | ); | |
d25b0d7b | 2305 | } |
93905212 | 2306 | if (MARK < SP) { |
a5ad7a5a | 2307 | copy_sv: |
3bdf583b | 2308 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
5811c07e | 2309 | if (!SvPADTMP(*SP)) { |
3bdf583b FC |
2310 | *++newsp = SvREFCNT_inc(*SP); |
2311 | FREETMPS; | |
2312 | sv_2mortal(*newsp); | |
5811c07e FC |
2313 | } |
2314 | else { | |
2315 | /* FREETMPS could clobber it */ | |
2316 | SV *sv = SvREFCNT_inc(*SP); | |
2317 | FREETMPS; | |
2318 | *++newsp = sv_mortalcopy(sv); | |
2319 | SvREFCNT_dec(sv); | |
2320 | } | |
3bdf583b FC |
2321 | } |
2322 | else | |
e08be60b | 2323 | *++newsp = |
5811c07e FC |
2324 | SvPADTMP(*SP) |
2325 | ? sv_mortalcopy(*SP) | |
2326 | : !SvTEMP(*SP) | |
e08be60b FC |
2327 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) |
2328 | : *SP; | |
3bdf583b | 2329 | } |
0d235c77 FC |
2330 | else { |
2331 | EXTEND(newsp,1); | |
3bdf583b | 2332 | *++newsp = &PL_sv_undef; |
0d235c77 | 2333 | } |
0e9700df | 2334 | if (CxLVAL(cx) & OPpDEREF) { |
767eda44 FC |
2335 | SvGETMAGIC(TOPs); |
2336 | if (!SvOK(TOPs)) { | |
0e9700df | 2337 | TOPs = vivify_ref(TOPs, CxLVAL(cx) & OPpDEREF); |
767eda44 FC |
2338 | } |
2339 | } | |
3bdf583b FC |
2340 | } |
2341 | else if (gimme == G_ARRAY) { | |
0e9700df | 2342 | assert (!(CxLVAL(cx) & OPpDEREF)); |
80422e24 | 2343 | if (ref || !CxLVAL(cx)) |
e08be60b FC |
2344 | while (++MARK <= SP) |
2345 | *++newsp = | |
5811c07e | 2346 | SvFLAGS(*MARK) & SVs_PADTMP |
80422e24 | 2347 | ? sv_mortalcopy(*MARK) |
5811c07e FC |
2348 | : SvTEMP(*MARK) |
2349 | ? *MARK | |
80422e24 | 2350 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); |
e08be60b | 2351 | else while (++MARK <= SP) { |
d25b0d7b FC |
2352 | if (*MARK != &PL_sv_undef |
2353 | && (SvPADTMP(*MARK) | |
2354 | || (SvFLAGS(*MARK) & (SVf_READONLY|SVf_FAKE)) | |
2355 | == SVf_READONLY | |
2356 | ) | |
2357 | ) { | |
2358 | SV *sv; | |
2359 | /* Might be flattened array after $#array = */ | |
2360 | PUTBACK; | |
2361 | LEAVE; | |
2362 | cxstack_ix--; | |
2363 | POPSUB(cx,sv); | |
2364 | PL_curpm = newpm; | |
2365 | LEAVESUB(sv); | |
ae917476 | 2366 | /* diag_listed_as: Can't return %s from lvalue subroutine */ |
d25b0d7b FC |
2367 | Perl_croak(aTHX_ |
2368 | "Can't return a %s from lvalue subroutine", | |
2369 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
2370 | } | |
2371 | else | |
4bee03f8 FC |
2372 | *++newsp = |
2373 | SvTEMP(*MARK) | |
2374 | ? *MARK | |
2375 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
3bdf583b FC |
2376 | } |
2377 | } | |
2378 | PL_stack_sp = newsp; | |
2379 | } | |
2380 | ||
a0d0e21e LW |
2381 | PP(pp_return) |
2382 | { | |
27da23d5 | 2383 | dVAR; dSP; dMARK; |
eb578fdb | 2384 | PERL_CONTEXT *cx; |
f86702cc | 2385 | bool popsub2 = FALSE; |
b45de488 | 2386 | bool clear_errsv = FALSE; |
fa1e92c4 | 2387 | bool lval = FALSE; |
a0d0e21e LW |
2388 | I32 gimme; |
2389 | SV **newsp; | |
2390 | PMOP *newpm; | |
2391 | I32 optype = 0; | |
b6494f15 | 2392 | SV *namesv; |
b0d9ce38 | 2393 | SV *sv; |
b263a1ad | 2394 | OP *retop = NULL; |
a0d0e21e | 2395 | |
0bd48802 AL |
2396 | const I32 cxix = dopoptosub(cxstack_ix); |
2397 | ||
9850bf21 RH |
2398 | if (cxix < 0) { |
2399 | if (CxMULTICALL(cxstack)) { /* In this case we must be in a | |
2400 | * sort block, which is a CXt_NULL | |
2401 | * not a CXt_SUB */ | |
2402 | dounwind(0); | |
d7507f74 RH |
2403 | PL_stack_base[1] = *PL_stack_sp; |
2404 | PL_stack_sp = PL_stack_base + 1; | |
a0d0e21e LW |
2405 | return 0; |
2406 | } | |
9850bf21 RH |
2407 | else |
2408 | DIE(aTHX_ "Can't return outside a subroutine"); | |
a0d0e21e | 2409 | } |
a0d0e21e LW |
2410 | if (cxix < cxstack_ix) |
2411 | dounwind(cxix); | |
2412 | ||
d7507f74 RH |
2413 | if (CxMULTICALL(&cxstack[cxix])) { |
2414 | gimme = cxstack[cxix].blk_gimme; | |
2415 | if (gimme == G_VOID) | |
2416 | PL_stack_sp = PL_stack_base; | |
2417 | else if (gimme == G_SCALAR) { | |
2418 | PL_stack_base[1] = *PL_stack_sp; | |
2419 | PL_stack_sp = PL_stack_base + 1; | |
2420 | } | |
9850bf21 | 2421 | return 0; |
d7507f74 | 2422 | } |
9850bf21 | 2423 | |
a0d0e21e | 2424 | POPBLOCK(cx,newpm); |
6b35e009 | 2425 | switch (CxTYPE(cx)) { |
a0d0e21e | 2426 | case CXt_SUB: |
f86702cc | 2427 | popsub2 = TRUE; |
fa1e92c4 | 2428 | lval = !!CvLVALUE(cx->blk_sub.cv); |
f39bc417 | 2429 | retop = cx->blk_sub.retop; |
5dd42e15 | 2430 | cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */ |
a0d0e21e LW |
2431 | break; |
2432 | case CXt_EVAL: | |
b45de488 GS |
2433 | if (!(PL_in_eval & EVAL_KEEPERR)) |
2434 | clear_errsv = TRUE; | |
a0d0e21e | 2435 | POPEVAL(cx); |
b6494f15 | 2436 | namesv = cx->blk_eval.old_namesv; |
f39bc417 | 2437 | retop = cx->blk_eval.retop; |
1d76a5c3 GS |
2438 | if (CxTRYBLOCK(cx)) |
2439 | break; | |
748a9306 LW |
2440 | if (optype == OP_REQUIRE && |
2441 | (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) ) | |
2442 | { | |
54310121 | 2443 | /* Unassume the success we assumed earlier. */ |
b6494f15 | 2444 | (void)hv_delete(GvHVn(PL_incgv), |
ecad31f0 | 2445 | SvPVX_const(namesv), |
c60dbbc3 | 2446 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 VP |
2447 | G_DISCARD); |
2448 | DIE(aTHX_ "%"SVf" did not return a true value", SVfARG(namesv)); | |
748a9306 | 2449 | } |
a0d0e21e | 2450 | break; |
7766f137 | 2451 | case CXt_FORMAT: |
f39bc417 | 2452 | retop = cx->blk_sub.retop; |
25375124 | 2453 | POPFORMAT(cx); |
7766f137 | 2454 | break; |
a0d0e21e | 2455 | default: |
5637ef5b | 2456 | DIE(aTHX_ "panic: return, type=%u", (unsigned) CxTYPE(cx)); |
a0d0e21e LW |
2457 | } |
2458 | ||
a1f49e72 | 2459 | TAINT_NOT; |
d25b0d7b | 2460 | if (lval) S_return_lvalues(aTHX_ MARK, SP, newsp, gimme, cx, newpm); |
3bdf583b FC |
2461 | else { |
2462 | if (gimme == G_SCALAR) { | |
a29cdaf0 IZ |
2463 | if (MARK < SP) { |
2464 | if (popsub2) { | |
a8bba7fa | 2465 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2466 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2467 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2468 | *++newsp = SvREFCNT_inc(*SP); |
2469 | FREETMPS; | |
2470 | sv_2mortal(*newsp); | |
959e3673 GS |
2471 | } |
2472 | else { | |
2473 | sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */ | |
a29cdaf0 | 2474 | FREETMPS; |
959e3673 GS |
2475 | *++newsp = sv_mortalcopy(sv); |
2476 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2477 | } |
959e3673 | 2478 | } |
6f48390a FC |
2479 | else if (SvTEMP(*SP) && SvREFCNT(*SP) == 1 |
2480 | && !SvMAGICAL(*SP)) { | |
767eda44 | 2481 | *++newsp = *SP; |
767eda44 | 2482 | } |
959e3673 | 2483 | else |
767eda44 | 2484 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2485 | } |
2486 | else | |
a29cdaf0 | 2487 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2488 | } |
2489 | else | |
3280af22 | 2490 | *++newsp = &PL_sv_undef; |
3bdf583b FC |
2491 | } |
2492 | else if (gimme == G_ARRAY) { | |
a1f49e72 | 2493 | while (++MARK <= SP) { |
3ed94dc0 | 2494 | *++newsp = popsub2 && SvTEMP(*MARK) && SvREFCNT(*MARK) == 1 |
6f48390a | 2495 | && !SvGMAGICAL(*MARK) |
f86702cc | 2496 | ? *MARK : sv_mortalcopy(*MARK); |
a1f49e72 CS |
2497 | TAINT_NOT; /* Each item is independent */ |
2498 | } | |
3bdf583b FC |
2499 | } |
2500 | PL_stack_sp = newsp; | |
a0d0e21e | 2501 | } |
a0d0e21e | 2502 | |
5dd42e15 | 2503 | LEAVE; |
f86702cc | 2504 | /* Stack values are safe: */ |
2505 | if (popsub2) { | |
5dd42e15 | 2506 | cxstack_ix--; |
b0d9ce38 | 2507 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2508 | } |
b0d9ce38 | 2509 | else |
c445ea15 | 2510 | sv = NULL; |
3280af22 | 2511 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2512 | |
b0d9ce38 | 2513 | LEAVESUB(sv); |
8433848b | 2514 | if (clear_errsv) { |
ab69dbc2 | 2515 | CLEAR_ERRSV(); |
8433848b | 2516 | } |
f39bc417 | 2517 | return retop; |
a0d0e21e LW |
2518 | } |
2519 | ||
4f443c3d FC |
2520 | /* This duplicates parts of pp_leavesub, so that it can share code with |
2521 | * pp_return */ | |
2522 | PP(pp_leavesublv) | |
2523 | { | |
2524 | dVAR; dSP; | |
4f443c3d FC |
2525 | SV **newsp; |
2526 | PMOP *newpm; | |
2527 | I32 gimme; | |
eb578fdb | 2528 | PERL_CONTEXT *cx; |
4f443c3d FC |
2529 | SV *sv; |
2530 | ||
2531 | if (CxMULTICALL(&cxstack[cxstack_ix])) | |
2532 | return 0; | |
2533 | ||
2534 | POPBLOCK(cx,newpm); | |
2535 | cxstack_ix++; /* temporarily protect top context */ | |
4f443c3d FC |
2536 | |
2537 | TAINT_NOT; | |
2538 | ||
0d235c77 | 2539 | S_return_lvalues(aTHX_ newsp, SP, newsp, gimme, cx, newpm); |
4f443c3d FC |
2540 | |
2541 | LEAVE; | |
4f443c3d | 2542 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
25375124 | 2543 | cxstack_ix--; |
4f443c3d FC |
2544 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2545 | ||
2546 | LEAVESUB(sv); | |
2547 | return cx->blk_sub.retop; | |
2548 | } | |
2549 | ||
1f039d60 FC |
2550 | static I32 |
2551 | S_unwind_loop(pTHX_ const char * const opname) | |
a0d0e21e | 2552 | { |
1f039d60 | 2553 | dVAR; |
a0d0e21e | 2554 | I32 cxix; |
1f039d60 FC |
2555 | if (PL_op->op_flags & OPf_SPECIAL) { |
2556 | cxix = dopoptoloop(cxstack_ix); | |
2557 | if (cxix < 0) | |
2558 | /* diag_listed_as: Can't "last" outside a loop block */ | |
2559 | Perl_croak(aTHX_ "Can't \"%s\" outside a loop block", opname); | |
2560 | } | |
2561 | else { | |
2562 | dSP; | |
2563 | STRLEN label_len; | |
2564 | const char * const label = | |
2565 | PL_op->op_flags & OPf_STACKED | |
2566 | ? SvPV(TOPs,label_len) | |
2567 | : (label_len = strlen(cPVOP->op_pv), cPVOP->op_pv); | |
2568 | const U32 label_flags = | |
2569 | PL_op->op_flags & OPf_STACKED | |
2570 | ? SvUTF8(POPs) | |
2571 | : (cPVOP->op_private & OPpPV_IS_UTF8) ? SVf_UTF8 : 0; | |
2572 | PUTBACK; | |
2573 | cxix = dopoptolabel(label, label_len, label_flags); | |
2574 | if (cxix < 0) | |
2575 | /* diag_listed_as: Label not found for "last %s" */ | |
2576 | Perl_croak(aTHX_ "Label not found for \"%s %"SVf"\"", | |
2577 | opname, | |
2578 | SVfARG(PL_op->op_flags & OPf_STACKED | |
2579 | && !SvGMAGICAL(TOPp1s) | |
2580 | ? TOPp1s | |
2581 | : newSVpvn_flags(label, | |
2582 | label_len, | |
2583 | label_flags | SVs_TEMP))); | |
2584 | } | |
2585 | if (cxix < cxstack_ix) | |
2586 | dounwind(cxix); | |
2587 | return cxix; | |
2588 | } | |
2589 | ||
2590 | PP(pp_last) | |
2591 | { | |
2592 | dVAR; | |
eb578fdb | 2593 | PERL_CONTEXT *cx; |
f86702cc | 2594 | I32 pop2 = 0; |
a0d0e21e | 2595 | I32 gimme; |
8772537c | 2596 | I32 optype; |
b263a1ad | 2597 | OP *nextop = NULL; |
a0d0e21e LW |
2598 | SV **newsp; |
2599 | PMOP *newpm; | |
c445ea15 | 2600 | SV *sv = NULL; |
9d4ba2ae | 2601 | |
1f039d60 | 2602 | S_unwind_loop(aTHX_ "last"); |
a0d0e21e LW |
2603 | |
2604 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2605 | cxstack_ix++; /* temporarily protect top context */ |
6b35e009 | 2606 | switch (CxTYPE(cx)) { |
c6fdafd0 | 2607 | case CXt_LOOP_LAZYIV: |
d01136d6 | 2608 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
2609 | case CXt_LOOP_FOR: |
2610 | case CXt_LOOP_PLAIN: | |
2611 | pop2 = CxTYPE(cx); | |
a8bba7fa | 2612 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
022eaa24 | 2613 | nextop = cx->blk_loop.my_op->op_lastop->op_next; |
a0d0e21e | 2614 | break; |
f86702cc | 2615 | case CXt_SUB: |
f86702cc | 2616 | pop2 = CXt_SUB; |
f39bc417 | 2617 | nextop = cx->blk_sub.retop; |
a0d0e21e | 2618 | break; |
f86702cc | 2619 | case CXt_EVAL: |
2620 | POPEVAL(cx); | |
f39bc417 | 2621 | nextop = cx->blk_eval.retop; |
a0d0e21e | 2622 | break; |
7766f137 GS |
2623 | case CXt_FORMAT: |
2624 | POPFORMAT(cx); | |
f39bc417 | 2625 | nextop = cx->blk_sub.retop; |
7766f137 | 2626 | break; |
a0d0e21e | 2627 | default: |
5637ef5b | 2628 | DIE(aTHX_ "panic: last, type=%u", (unsigned) CxTYPE(cx)); |
a0d0e21e LW |
2629 | } |
2630 | ||
a1f49e72 | 2631 | TAINT_NOT; |
0c0c317c | 2632 | PL_stack_sp = newsp; |
f86702cc | 2633 | |
5dd42e15 DM |
2634 | LEAVE; |
2635 | cxstack_ix--; | |
f86702cc | 2636 | /* Stack values are safe: */ |
2637 | switch (pop2) { | |
c6fdafd0 | 2638 | case CXt_LOOP_LAZYIV: |
3b719c58 | 2639 | case CXt_LOOP_PLAIN: |
d01136d6 | 2640 | case CXt_LOOP_LAZYSV: |
3b719c58 | 2641 | case CXt_LOOP_FOR: |
a8bba7fa | 2642 | POPLOOP(cx); /* release loop vars ... */ |
4fdae800 | 2643 | LEAVE; |
f86702cc | 2644 | break; |
2645 | case CXt_SUB: | |
b0d9ce38 | 2646 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2647 | break; |
a0d0e21e | 2648 | } |
3280af22 | 2649 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2650 | |
b0d9ce38 | 2651 | LEAVESUB(sv); |
9d4ba2ae AL |
2652 | PERL_UNUSED_VAR(optype); |
2653 | PERL_UNUSED_VAR(gimme); | |
f86702cc | 2654 | return nextop; |
a0d0e21e LW |
2655 | } |
2656 | ||
2657 | PP(pp_next) | |
2658 | { | |
27da23d5 | 2659 | dVAR; |
eb578fdb | 2660 | PERL_CONTEXT *cx; |
1f039d60 | 2661 | const I32 inner = PL_scopestack_ix; |
a0d0e21e | 2662 | |
1f039d60 | 2663 | S_unwind_loop(aTHX_ "next"); |
a0d0e21e | 2664 | |
85538317 GS |
2665 | /* clear off anything above the scope we're re-entering, but |
2666 | * save the rest until after a possible continue block */ | |
1ba6ee2b | 2667 | TOPBLOCK(cx); |
85538317 GS |
2668 | if (PL_scopestack_ix < inner) |
2669 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
3a1b2b9e | 2670 | PL_curcop = cx->blk_oldcop; |
47c9d59f | 2671 | PERL_ASYNC_CHECK(); |
d57ce4df | 2672 | return (cx)->blk_loop.my_op->op_nextop; |
a0d0e21e LW |
2673 | } |
2674 | ||
2675 | PP(pp_redo) | |
2676 | { | |
27da23d5 | 2677 | dVAR; |
1f039d60 | 2678 | const I32 cxix = S_unwind_loop(aTHX_ "redo"); |
eb578fdb | 2679 | PERL_CONTEXT *cx; |
a0d0e21e | 2680 | I32 oldsave; |
1f039d60 | 2681 | OP* redo_op = cxstack[cxix].blk_loop.my_op->op_redoop; |
a0d0e21e | 2682 | |
a034e688 DM |
2683 | if (redo_op->op_type == OP_ENTER) { |
2684 | /* pop one less context to avoid $x being freed in while (my $x..) */ | |
2685 | cxstack_ix++; | |
2686 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK); | |
2687 | redo_op = redo_op->op_next; | |
2688 | } | |
2689 | ||
a0d0e21e | 2690 | TOPBLOCK(cx); |
3280af22 | 2691 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e | 2692 | LEAVE_SCOPE(oldsave); |
936c78b5 | 2693 | FREETMPS; |
3a1b2b9e | 2694 | PL_curcop = cx->blk_oldcop; |
47c9d59f | 2695 | PERL_ASYNC_CHECK(); |
a034e688 | 2696 | return redo_op; |
a0d0e21e LW |
2697 | } |
2698 | ||
0824fdcb | 2699 | STATIC OP * |
5db1eb8d | 2700 | S_dofindlabel(pTHX_ OP *o, const char *label, STRLEN len, U32 flags, OP **opstack, OP **oplimit) |
a0d0e21e | 2701 | { |
97aff369 | 2702 | dVAR; |
a0d0e21e | 2703 | OP **ops = opstack; |
a1894d81 | 2704 | static const char* const too_deep = "Target of goto is too deeply nested"; |
a0d0e21e | 2705 | |
7918f24d NC |
2706 | PERL_ARGS_ASSERT_DOFINDLABEL; |
2707 | ||
fc36a67e | 2708 | if (ops >= oplimit) |
0157ef98 | 2709 | Perl_croak(aTHX_ "%s", too_deep); |
11343788 MB |
2710 | if (o->op_type == OP_LEAVE || |
2711 | o->op_type == OP_SCOPE || | |
2712 | o->op_type == OP_LEAVELOOP || | |
33d34e4c | 2713 | o->op_type == OP_LEAVESUB || |
11343788 | 2714 | o->op_type == OP_LEAVETRY) |
fc36a67e | 2715 | { |
5dc0d613 | 2716 | *ops++ = cUNOPo->op_first; |
fc36a67e | 2717 | if (ops >= oplimit) |
0157ef98 | 2718 | Perl_croak(aTHX_ "%s", too_deep); |
fc36a67e | 2719 | } |
c4aa4e48 | 2720 | *ops = 0; |
11343788 | 2721 | if (o->op_flags & OPf_KIDS) { |
aec46f14 | 2722 | OP *kid; |
a0d0e21e | 2723 | /* First try all the kids at this level, since that's likeliest. */ |
11343788 | 2724 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
7e8f1eac | 2725 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
5db1eb8d BF |
2726 | STRLEN kid_label_len; |
2727 | U32 kid_label_flags; | |
2728 | const char *kid_label = CopLABEL_len_flags(kCOP, | |
2729 | &kid_label_len, &kid_label_flags); | |
2730 | if (kid_label && ( | |
2731 | ( (kid_label_flags & SVf_UTF8) != (flags & SVf_UTF8) ) ? | |
2732 | (flags & SVf_UTF8) | |
2733 | ? (bytes_cmp_utf8( | |
2734 | (const U8*)kid_label, kid_label_len, | |
2735 | (const U8*)label, len) == 0) | |
2736 | : (bytes_cmp_utf8( | |
2737 | (const U8*)label, len, | |
2738 | (const U8*)kid_label, kid_label_len) == 0) | |
eade7155 BF |
2739 | : ( len == kid_label_len && ((kid_label == label) |
2740 | || memEQ(kid_label, label, len))))) | |
7e8f1eac AD |
2741 | return kid; |
2742 | } | |
a0d0e21e | 2743 | } |
11343788 | 2744 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
3280af22 | 2745 | if (kid == PL_lastgotoprobe) |
a0d0e21e | 2746 | continue; |
ed8d0fe2 SM |
2747 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2748 | if (ops == opstack) | |
2749 | *ops++ = kid; | |
2750 | else if (ops[-1]->op_type == OP_NEXTSTATE || | |
2751 | ops[-1]->op_type == OP_DBSTATE) | |
2752 | ops[-1] = kid; | |
2753 | else | |
2754 | *ops++ = kid; | |
2755 | } | |
5db1eb8d | 2756 | if ((o = dofindlabel(kid, label, len, flags, ops, oplimit))) |
11343788 | 2757 | return o; |
a0d0e21e LW |
2758 | } |
2759 | } | |
c4aa4e48 | 2760 | *ops = 0; |
a0d0e21e LW |
2761 | return 0; |
2762 | } | |
2763 | ||
7d1d69cb | 2764 | PP(pp_goto) /* also pp_dump */ |
a0d0e21e | 2765 | { |
27da23d5 | 2766 | dVAR; dSP; |
cbbf8932 | 2767 | OP *retop = NULL; |
a0d0e21e | 2768 | I32 ix; |
eb578fdb | 2769 | PERL_CONTEXT *cx; |
fc36a67e | 2770 | #define GOTO_DEPTH 64 |
2771 | OP *enterops[GOTO_DEPTH]; | |
cbbf8932 | 2772 | const char *label = NULL; |
5db1eb8d BF |
2773 | STRLEN label_len = 0; |
2774 | U32 label_flags = 0; | |
bfed75c6 | 2775 | const bool do_dump = (PL_op->op_type == OP_DUMP); |
a1894d81 | 2776 | static const char* const must_have_label = "goto must have label"; |
a0d0e21e | 2777 | |
533c011a | 2778 | if (PL_op->op_flags & OPf_STACKED) { |
7d1d69cb DM |
2779 | /* goto EXPR or goto &foo */ |
2780 | ||
9d4ba2ae | 2781 | SV * const sv = POPs; |
55b37f1c | 2782 | SvGETMAGIC(sv); |
a0d0e21e LW |
2783 | |
2784 | /* This egregious kludge implements goto &subroutine */ | |
2785 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) { | |
2786 | I32 cxix; | |
eb578fdb | 2787 | PERL_CONTEXT *cx; |
ea726b52 | 2788 | CV *cv = MUTABLE_CV(SvRV(sv)); |
049bd5ff | 2789 | AV *arg = GvAV(PL_defgv); |
a0d0e21e LW |
2790 | I32 oldsave; |
2791 | ||
e8f7dd13 | 2792 | retry: |
4aa0a1f7 | 2793 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
7fc63493 | 2794 | const GV * const gv = CvGV(cv); |
e8f7dd13 | 2795 | if (gv) { |
7fc63493 | 2796 | GV *autogv; |
e8f7dd13 GS |
2797 | SV *tmpstr; |
2798 | /* autoloaded stub? */ | |
2799 | if (cv != GvCV(gv) && (cv = GvCV(gv))) | |
2800 | goto retry; | |
c271df94 BF |
2801 | autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), |
2802 | GvNAMELEN(gv), | |
2803 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0); | |
e8f7dd13 GS |
2804 | if (autogv && (cv = GvCV(autogv))) |
2805 | goto retry; | |
2806 | tmpstr = sv_newmortal(); | |
c445ea15 | 2807 | gv_efullname3(tmpstr, gv, NULL); |
be2597df | 2808 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr)); |
4aa0a1f7 | 2809 | } |
cea2e8a9 | 2810 | DIE(aTHX_ "Goto undefined subroutine"); |
4aa0a1f7 AD |
2811 | } |
2812 | ||
a0d0e21e | 2813 | /* First do some returnish stuff. */ |
b37c2d43 | 2814 | SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */ |
71fc2216 | 2815 | FREETMPS; |
a0d0e21e | 2816 | cxix = dopoptosub(cxstack_ix); |
8da3792e S |
2817 | if (cxix < cxstack_ix) { |
2818 | if (cxix < 0) { | |
2819 | SvREFCNT_dec(cv); | |
2820 | DIE(aTHX_ "Can't goto subroutine outside a subroutine"); | |
2821 | } | |
a0d0e21e | 2822 | dounwind(cxix); |
8da3792e | 2823 | } |
a0d0e21e | 2824 | TOPBLOCK(cx); |
2d43a17f | 2825 | SPAGAIN; |
564abe23 | 2826 | /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */ |
2d43a17f | 2827 | if (CxTYPE(cx) == CXt_EVAL) { |
110af908 | 2828 | SvREFCNT_dec(cv); |
c74ace89 | 2829 | if (CxREALEVAL(cx)) |
00455a92 | 2830 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 DM |
2831 | DIE(aTHX_ "Can't goto subroutine from an eval-string"); |
2832 | else | |
00455a92 | 2833 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 | 2834 | DIE(aTHX_ "Can't goto subroutine from an eval-block"); |
2d43a17f | 2835 | } |
9850bf21 | 2836 | else if (CxMULTICALL(cx)) |
110af908 FC |
2837 | { |
2838 | SvREFCNT_dec(cv); | |
9850bf21 | 2839 | DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)"); |
110af908 | 2840 | } |
bafb2adc | 2841 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { |
a0d0e21e | 2842 | AV* av = cx->blk_sub.argarray; |
bfed75c6 | 2843 | |
049bd5ff FC |
2844 | /* abandon the original @_ if it got reified or if it is |
2845 | the same as the current @_ */ | |
2846 | if (AvREAL(av) || av == arg) { | |
b1464ded | 2847 | SvREFCNT_dec(av); |
d8b46c1b | 2848 | av = newAV(); |
11ca45c0 | 2849 | AvREIFY_only(av); |
ad64d0ec | 2850 | PAD_SVl(0) = MUTABLE_SV(cx->blk_sub.argarray = av); |
62b1ebc2 | 2851 | } |
049bd5ff | 2852 | else CLEAR_ARGARRAY(av); |
a0d0e21e | 2853 | } |
049bd5ff FC |
2854 | /* We donate this refcount later to the callee’s pad. */ |
2855 | SvREFCNT_inc_simple_void(arg); | |
6b35e009 | 2856 | if (CxTYPE(cx) == CXt_SUB && |
b150fb22 | 2857 | !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) |
a0d0e21e | 2858 | SvREFCNT_dec(cx->blk_sub.cv); |
3280af22 | 2859 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
2860 | LEAVE_SCOPE(oldsave); |
2861 | ||
1d59c038 FC |
2862 | /* A destructor called during LEAVE_SCOPE could have undefined |
2863 | * our precious cv. See bug #99850. */ | |
2864 | if (!CvROOT(cv) && !CvXSUB(cv)) { | |
2865 | const GV * const gv = CvGV(cv); | |
049bd5ff | 2866 | SvREFCNT_dec(arg); |
1d59c038 FC |
2867 | if (gv) { |
2868 | SV * const tmpstr = sv_newmortal(); | |
2869 | gv_efullname3(tmpstr, gv, NULL); | |
2870 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", | |
2871 | SVfARG(tmpstr)); | |
2872 | } | |
2873 | DIE(aTHX_ "Goto undefined subroutine"); | |
2874 | } | |
2875 | ||
a0d0e21e LW |
2876 | /* Now do some callish stuff. */ |
2877 | SAVETMPS; | |
5023d17a | 2878 | SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */ |
aed2304a | 2879 | if (CvISXSUB(cv)) { |
b37c2d43 | 2880 | OP* const retop = cx->blk_sub.retop; |
cb65b687 DM |
2881 | SV **newsp; |
2882 | I32 gimme; | |
ad39f3a2 | 2883 | const SSize_t items = arg ? AvFILL(arg) + 1 : 0; |
cd313eb4 | 2884 | const bool m = arg ? cBOOL(SvRMAGICAL(arg)) : 0; |
049bd5ff FC |
2885 | SV** mark; |
2886 | ||
cb65b687 DM |
2887 | PERL_UNUSED_VAR(newsp); |
2888 | PERL_UNUSED_VAR(gimme); | |
2889 | ||
049bd5ff | 2890 | /* put GvAV(defgv) back onto stack */ |
8c9d3376 FC |
2891 | if (items) { |
2892 | EXTEND(SP, items+1); /* @_ could have been extended. */ | |
8c9d3376 | 2893 | } |
049bd5ff | 2894 | mark = SP; |
ad39f3a2 | 2895 | if (items) { |
de935cc9 | 2896 | SSize_t index; |
ad39f3a2 | 2897 | bool r = cBOOL(AvREAL(arg)); |
b1464ded | 2898 | for (index=0; index<items; index++) |
ad39f3a2 FC |
2899 | { |
2900 | SV *sv; | |
2901 | if (m) { | |
2902 | SV ** const svp = av_fetch(arg, index, 0); | |
2903 | sv = svp ? *svp : NULL; | |
dd2a7f90 | 2904 | } |
ad39f3a2 FC |
2905 | else sv = AvARRAY(arg)[index]; |
2906 | SP[index+1] = sv | |
2907 | ? r ? SvREFCNT_inc_NN(sv_2mortal(sv)) : sv | |
2908 | : sv_2mortal(newSVavdefelem(arg, index, 1)); | |
2909 | } | |
049bd5ff | 2910 | } |
ad39f3a2 | 2911 | SP += items; |
049bd5ff FC |
2912 | SvREFCNT_dec(arg); |
2913 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { | |
2914 | /* Restore old @_ */ | |
2915 | arg = GvAV(PL_defgv); | |
2916 | GvAV(PL_defgv) = cx->blk_sub.savearray; | |
2917 | SvREFCNT_dec(arg); | |
b1464ded | 2918 | } |
1fa4e549 | 2919 | |
b37c2d43 AL |
2920 | /* XS subs don't have a CxSUB, so pop it */ |
2921 | POPBLOCK(cx, PL_curpm); | |
2922 | /* Push a mark for the start of arglist */ | |
2923 | PUSHMARK(mark); | |
2924 | PUTBACK; | |
2925 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
a57c6685 | 2926 | LEAVE; |
47c9d59f | 2927 | PERL_ASYNC_CHECK(); |
5eff7df7 | 2928 | return retop; |
a0d0e21e LW |
2929 | } |
2930 | else { | |
b70d5558 | 2931 | PADLIST * const padlist = CvPADLIST(cv); |
a0d0e21e | 2932 | cx->blk_sub.cv = cv; |
1a5b3db4 | 2933 | cx->blk_sub.olddepth = CvDEPTH(cv); |
dd2155a4 | 2934 | |
a0d0e21e LW |
2935 | CvDEPTH(cv)++; |
2936 | if (CvDEPTH(cv) < 2) | |
74c765eb | 2937 | SvREFCNT_inc_simple_void_NN(cv); |
dd2155a4 | 2938 | else { |
2b9dff67 | 2939 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION)) |
44a8e56a | 2940 | sub_crush_depth(cv); |
26019298 | 2941 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2942 | } |
426a09cd | 2943 | PL_curcop = cx->blk_oldcop; |
fd617465 DM |
2944 | SAVECOMPPAD(); |
2945 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
bafb2adc | 2946 | if (CxHASARGS(cx)) |
6d4ff0d2 | 2947 | { |
dd2155a4 | 2948 | CX_CURPAD_SAVE(cx->blk_sub); |
a0d0e21e | 2949 | |
049bd5ff FC |
2950 | /* cx->blk_sub.argarray has no reference count, so we |
2951 | need something to hang on to our argument array so | |
2952 | that cx->blk_sub.argarray does not end up pointing | |
2953 | to freed memory as the result of undef *_. So put | |
2954 | it in the callee’s pad, donating our refer- | |
2955 | ence count. */ | |
bfa371b6 FC |
2956 | if (arg) { |
2957 | SvREFCNT_dec(PAD_SVl(0)); | |
2958 | PAD_SVl(0) = (SV *)(cx->blk_sub.argarray = arg); | |
2959 | } | |
049bd5ff FC |
2960 | |
2961 | /* GvAV(PL_defgv) might have been modified on scope | |
2962 | exit, so restore it. */ | |
2963 | if (arg != GvAV(PL_defgv)) { | |
2964 | AV * const av = GvAV(PL_defgv); | |
2965 | GvAV(PL_defgv) = (AV *)SvREFCNT_inc_simple(arg); | |
2966 | SvREFCNT_dec(av); | |
a0d0e21e LW |
2967 | } |
2968 | } | |
049bd5ff | 2969 | else SvREFCNT_dec(arg); |
491527d0 | 2970 | if (PERLDB_SUB) { /* Checking curstash breaks DProf. */ |
005a8a35 | 2971 | Perl_get_db_sub(aTHX_ NULL, cv); |
b37c2d43 | 2972 | if (PERLDB_GOTO) { |
b96d8cd9 | 2973 | CV * const gotocv = get_cvs("DB::goto", 0); |
b37c2d43 AL |
2974 | if (gotocv) { |
2975 | PUSHMARK( PL_stack_sp ); | |
ad64d0ec | 2976 | call_sv(MUTABLE_SV(gotocv), G_SCALAR | G_NODEBUG); |
b37c2d43 AL |
2977 | PL_stack_sp--; |
2978 | } | |
491527d0 | 2979 | } |
1ce6579f | 2980 | } |
47c9d59f | 2981 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
2982 | RETURNOP(CvSTART(cv)); |
2983 | } | |
2984 | } | |
1614b0e3 | 2985 | else { |
7d1d69cb | 2986 | /* goto EXPR */ |
55b37f1c | 2987 | label = SvPV_nomg_const(sv, label_len); |
5db1eb8d | 2988 | label_flags = SvUTF8(sv); |
1614b0e3 | 2989 | } |
a0d0e21e | 2990 | } |
2fc690dc | 2991 | else if (!(PL_op->op_flags & OPf_SPECIAL)) { |
7d1d69cb | 2992 | /* goto LABEL or dump LABEL */ |
5db1eb8d BF |
2993 | label = cPVOP->op_pv; |
2994 | label_flags = (cPVOP->op_private & OPpPV_IS_UTF8) ? SVf_UTF8 : 0; | |
2995 | label_len = strlen(label); | |
2996 | } | |
0157ef98 | 2997 | if (!(do_dump || label_len)) DIE(aTHX_ "%s", must_have_label); |
a0d0e21e | 2998 | |
f410a211 NC |
2999 | PERL_ASYNC_CHECK(); |
3000 | ||
3532f34a | 3001 | if (label_len) { |
cbbf8932 | 3002 | OP *gotoprobe = NULL; |
3b2447bc | 3003 | bool leaving_eval = FALSE; |
33d34e4c | 3004 | bool in_block = FALSE; |
cbbf8932 | 3005 | PERL_CONTEXT *last_eval_cx = NULL; |
a0d0e21e LW |
3006 | |
3007 | /* find label */ | |
3008 | ||
d4c19fe8 | 3009 | PL_lastgotoprobe = NULL; |
a0d0e21e LW |
3010 | *enterops = 0; |
3011 | for (ix = cxstack_ix; ix >= 0; ix--) { | |
3012 | cx = &cxstack[ix]; | |
6b35e009 | 3013 | switch (CxTYPE(cx)) { |
a0d0e21e | 3014 | case CXt_EVAL: |
3b2447bc | 3015 | leaving_eval = TRUE; |
971ecbe6 | 3016 | if (!CxTRYBLOCK(cx)) { |
a4f3a277 RH |
3017 | gotoprobe = (last_eval_cx ? |
3018 | last_eval_cx->blk_eval.old_eval_root : | |
3019 | PL_eval_root); | |
3020 | last_eval_cx = cx; | |
9c5794fe RH |
3021 | break; |
3022 | } | |
3023 | /* else fall through */ | |
c6fdafd0 | 3024 | case CXt_LOOP_LAZYIV: |
d01136d6 | 3025 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
3026 | case CXt_LOOP_FOR: |
3027 | case CXt_LOOP_PLAIN: | |
bb5aedc1 VP |
3028 | case CXt_GIVEN: |
3029 | case CXt_WHEN: | |
a0d0e21e LW |
3030 | gotoprobe = cx->blk_oldcop->op_sibling; |
3031 | break; | |
3032 | case CXt_SUBST: | |
3033 | continue; | |
3034 | case CXt_BLOCK: | |
33d34e4c | 3035 | if (ix) { |
a0d0e21e | 3036 | gotoprobe = cx->blk_oldcop->op_sibling; |
33d34e4c AE |
3037 | in_block = TRUE; |
3038 | } else | |
3280af22 | 3039 | gotoprobe = PL_main_root; |
a0d0e21e | 3040 | break; |
b3933176 | 3041 | case CXt_SUB: |
9850bf21 | 3042 | if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) { |
b3933176 CS |
3043 | gotoprobe = CvROOT(cx->blk_sub.cv); |
3044 | break; | |
3045 | } | |
924ba076 | 3046 | /* FALLTHROUGH */ |
7766f137 | 3047 | case CXt_FORMAT: |
0a753a76 | 3048 | case CXt_NULL: |
a651a37d | 3049 | DIE(aTHX_ "Can't \"goto\" out of a pseudo block"); |
a0d0e21e LW |
3050 | default: |
3051 | if (ix) | |
5637ef5b NC |
3052 | DIE(aTHX_ "panic: goto, type=%u, ix=%ld", |
3053 | CxTYPE(cx), (long) ix); | |
3280af22 | 3054 | gotoprobe = PL_main_root; |
a0d0e21e LW |
3055 | break; |
3056 | } | |
2b597662 | 3057 | if (gotoprobe) { |
5db1eb8d | 3058 | retop = dofindlabel(gotoprobe, label, label_len, label_flags, |
2b597662 GS |
3059 | enterops, enterops + GOTO_DEPTH); |
3060 | if (retop) | |
3061 | break; | |
eae48c89 Z |
3062 | if (gotoprobe->op_sibling && |
3063 | gotoprobe->op_sibling->op_type == OP_UNSTACK && | |
3064 | gotoprobe->op_sibling->op_sibling) { | |
3065 | retop = dofindlabel(gotoprobe->op_sibling->op_sibling, | |
5db1eb8d BF |
3066 | label, label_len, label_flags, enterops, |
3067 | enterops + GOTO_DEPTH); | |
eae48c89 Z |
3068 | if (retop) |
3069 | break; | |
3070 | } | |
2b597662 | 3071 | } |
3280af22 | 3072 | PL_lastgotoprobe = gotoprobe; |
a0d0e21e LW |
3073 | } |
3074 | if (!retop) | |
b17a0679 FC |
3075 | DIE(aTHX_ "Can't find label %"UTF8f, |
3076 | UTF8fARG(label_flags, label_len, label)); | |
a0d0e21e | 3077 | |
3b2447bc RH |
3078 | /* if we're leaving an eval, check before we pop any frames |
3079 | that we're not going to punt, otherwise the error | |
3080 | won't be caught */ | |
3081 | ||
3082 | if (leaving_eval && *enterops && enterops[1]) { | |
3083 | I32 i; | |
3084 | for (i = 1; enterops[i]; i++) | |
3085 | if (enterops[i]->op_type == OP_ENTERITER) | |
3086 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); | |
3087 | } | |
3088 | ||
b500e03b GG |
3089 | if (*enterops && enterops[1]) { |
3090 | I32 i = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; | |
3091 | if (enterops[i]) | |
3092 | deprecate("\"goto\" to jump into a construct"); | |
3093 | } | |
3094 | ||
a0d0e21e LW |
3095 | /* pop unwanted frames */ |
3096 | ||
3097 | if (ix < cxstack_ix) { | |
3098 | I32 oldsave; | |
3099 | ||
3100 | if (ix < 0) | |
5edb7975 | 3101 | DIE(aTHX_ "panic: docatch: illegal ix=%ld", (long)ix); |
a0d0e21e LW |
3102 | dounwind(ix); |
3103 | TOPBLOCK(cx); | |
3280af22 | 3104 | oldsave = PL_scopestack[PL_scopestack_ix]; |
a0d0e21e LW |
3105 | LEAVE_SCOPE(oldsave); |
3106 | } | |
3107 | ||
3108 | /* push wanted frames */ | |
3109 | ||
748a9306 | 3110 | if (*enterops && enterops[1]) { |
0bd48802 | 3111 | OP * const oldop = PL_op; |
33d34e4c AE |
3112 | ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; |
3113 | for (; enterops[ix]; ix++) { | |
533c011a | 3114 | PL_op = enterops[ix]; |
84902520 TB |
3115 | /* Eventually we may want to stack the needed arguments |
3116 | * for each op. For now, we punt on the hard ones. */ | |
533c011a | 3117 | if (PL_op->op_type == OP_ENTERITER) |
894356b3 | 3118 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
16c91539 | 3119 | PL_op->op_ppaddr(aTHX); |
a0d0e21e | 3120 | } |
533c011a | 3121 | PL_op = oldop; |
a0d0e21e LW |
3122 | } |
3123 | } | |
3124 | ||
3125 | if (do_dump) { | |
a5f75d66 | 3126 | #ifdef VMS |
6b88bc9c | 3127 | if (!retop) retop = PL_main_start; |
a5f75d66 | 3128 | #endif |
3280af22 NIS |
3129 | PL_restartop = retop; |
3130 | PL_do_undump = TRUE; | |
a0d0e21e LW |
3131 | |
3132 | my_unexec(); | |
3133 | ||
3280af22 NIS |
3134 | PL_restartop = 0; /* hmm, must be GNU unexec().. */ |
3135 | PL_do_undump = FALSE; | |
a0d0e21e LW |
3136 | } |
3137 | ||
47c9d59f | 3138 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
3139 | RETURNOP(retop); |
3140 | } | |
3141 | ||
3142 | PP(pp_exit) | |
3143 | { | |
97aff369 | 3144 | dVAR; |
39644a26 | 3145 | dSP; |
a0d0e21e LW |
3146 | I32 anum; |
3147 | ||
3148 | if (MAXARG < 1) | |
3149 | anum = 0; | |
9d3c658e FC |
3150 | else if (!TOPs) { |
3151 | anum = 0; (void)POPs; | |
3152 | } | |
ff0cee69 | 3153 | else { |
a0d0e21e | 3154 | anum = SvIVx(POPs); |
d98f61e7 | 3155 | #ifdef VMS |
5450b4d8 FC |
3156 | if (anum == 1 |
3157 | && SvTRUE(cop_hints_fetch_pvs(PL_curcop, "vmsish_exit", 0))) | |
ff0cee69 | 3158 | anum = 0; |
97124ef6 FC |
3159 | VMSISH_HUSHED = |
3160 | VMSISH_HUSHED || (PL_curcop->op_private & OPpHUSH_VMSISH); | |
ff0cee69 | 3161 | #endif |
3162 | } | |
cc3604b1 | 3163 | PL_exit_flags |= PERL_EXIT_EXPECTED; |
81d86705 NC |
3164 | #ifdef PERL_MAD |
3165 | /* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */ | |
3166 | if (anum || !(PL_minus_c && PL_madskills)) | |
3167 | my_exit(anum); | |
3168 | #else | |
a0d0e21e | 3169 | my_exit(anum); |
81d86705 | 3170 | #endif |
3280af22 | 3171 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
3172 | RETURN; |
3173 | } | |
3174 | ||
a0d0e21e LW |
3175 | /* Eval. */ |
3176 | ||
0824fdcb | 3177 | STATIC void |
cea2e8a9 | 3178 | S_save_lines(pTHX_ AV *array, SV *sv) |
a0d0e21e | 3179 | { |
504618e9 | 3180 | const char *s = SvPVX_const(sv); |
890ce7af | 3181 | const char * const send = SvPVX_const(sv) + SvCUR(sv); |
504618e9 | 3182 | I32 line = 1; |
a0d0e21e | 3183 | |
7918f24d NC |
3184 | PERL_ARGS_ASSERT_SAVE_LINES; |
3185 | ||
a0d0e21e | 3186 | while (s && s < send) { |
f54cb97a | 3187 | const char *t; |
b9f83d2f | 3188 | SV * const tmpstr = newSV_type(SVt_PVMG); |
a0d0e21e | 3189 | |
1d963ff3 | 3190 | t = (const char *)memchr(s, '\n', send - s); |
a0d0e21e LW |
3191 | if (t) |
3192 | t++; | |
3193 | else | |
3194 | t = send; | |
3195 | ||
3196 | sv_setpvn(tmpstr, s, t - s); | |
3197 | av_store(array, line++, tmpstr); | |
3198 | s = t; | |
3199 | } | |
3200 | } | |
3201 | ||
22f16304 RU |
3202 | /* |
3203 | =for apidoc docatch | |
3204 | ||
3205 | Check for the cases 0 or 3 of cur_env.je_ret, only used inside an eval context. | |
3206 | ||
3207 | 0 is used as continue inside eval, | |
3208 | ||
3209 | 3 is used for a die caught by an inner eval - continue inner loop | |
3210 | ||
3211 | See cop.h: je_mustcatch, when set at any runlevel to TRUE, means eval ops must | |
3212 | establish a local jmpenv to handle exception traps. | |
3213 | ||
3214 | =cut | |
3215 | */ | |
0824fdcb | 3216 | STATIC OP * |
cea2e8a9 | 3217 | S_docatch(pTHX_ OP *o) |
1e422769 | 3218 | { |
97aff369 | 3219 | dVAR; |
6224f72b | 3220 | int ret; |
06b5626a | 3221 | OP * const oldop = PL_op; |
db36c5a1 | 3222 | dJMPENV; |
1e422769 | 3223 | |
1e422769 | 3224 | #ifdef DEBUGGING |
54310121 | 3225 | assert(CATCH_GET == TRUE); |
1e422769 | 3226 | #endif |
312caa8e | 3227 | PL_op = o; |
8bffa5f8 | 3228 | |
14dd3ad8 | 3229 | JMPENV_PUSH(ret); |
6224f72b | 3230 | switch (ret) { |
312caa8e | 3231 | case 0: |
abd70938 DM |
3232 | assert(cxstack_ix >= 0); |
3233 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3234 | cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env; | |
14dd3ad8 | 3235 | redo_body: |
85aaa934 | 3236 | CALLRUNOPS(aTHX); |
312caa8e CS |
3237 | break; |
3238 | case 3: | |
8bffa5f8 | 3239 | /* die caught by an inner eval - continue inner loop */ |
febb3a6d Z |
3240 | if (PL_restartop && PL_restartjmpenv == PL_top_env) { |
3241 | PL_restartjmpenv = NULL; | |
312caa8e CS |
3242 | PL_op = PL_restartop; |
3243 | PL_restartop = 0; | |
3244 | goto redo_body; | |
3245 | } | |
924ba076 | 3246 | /* FALLTHROUGH */ |
312caa8e | 3247 | default: |
14dd3ad8 | 3248 | JMPENV_POP; |
533c011a | 3249 | PL_op = oldop; |
6224f72b | 3250 | JMPENV_JUMP(ret); |
118e2215 | 3251 | assert(0); /* NOTREACHED */ |
1e422769 | 3252 | } |
14dd3ad8 | 3253 | JMPENV_POP; |
533c011a | 3254 | PL_op = oldop; |
5f66b61c | 3255 | return NULL; |
1e422769 | 3256 | } |
3257 | ||
a3985cdc DM |
3258 | |
3259 | /* | |
3260 | =for apidoc find_runcv | |
3261 | ||
3262 | Locate the CV corresponding to the currently executing sub or eval. | |
d819b83a DM |
3263 | If db_seqp is non_null, skip CVs that are in the DB package and populate |
3264 | *db_seqp with the cop sequence number at the point that the DB:: code was | |
72d33970 FC |
3265 | entered. (This allows debuggers to eval in the scope of the breakpoint |
3266 | rather than in the scope of the debugger itself.) | |
a3985cdc DM |
3267 | |
3268 | =cut | |
3269 | */ | |
3270 | ||
3271 | CV* | |
d819b83a | 3272 | Perl_find_runcv(pTHX_ U32 *db_seqp) |
a3985cdc | 3273 | { |
db4cf31d | 3274 | return Perl_find_runcv_where(aTHX_ 0, 0, db_seqp); |
70794f7b FC |
3275 | } |
3276 | ||
3277 | /* If this becomes part of the API, it might need a better name. */ | |
3278 | CV * | |
db4cf31d | 3279 | Perl_find_runcv_where(pTHX_ U8 cond, IV arg, U32 *db_seqp) |
70794f7b | 3280 | { |
97aff369 | 3281 | dVAR; |
a3985cdc | 3282 | PERL_SI *si; |
b4b0692a | 3283 | int level = 0; |
a3985cdc | 3284 | |
d819b83a | 3285 | if (db_seqp) |
c3923c33 DM |
3286 | *db_seqp = |
3287 | PL_curcop == &PL_compiling | |
3288 | ? PL_cop_seqmax | |
3289 | : PL_curcop->cop_seq; | |
3290 | ||
a3985cdc | 3291 | for (si = PL_curstackinfo; si; si = si->si_prev) { |
06b5626a | 3292 | I32 ix; |
a3985cdc | 3293 | for (ix = si->si_cxix; ix >= 0; ix--) { |
06b5626a | 3294 | const PERL_CONTEXT *cx = &(si->si_cxstack[ix]); |
70794f7b | 3295 | CV *cv = NULL; |
d819b83a | 3296 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
70794f7b | 3297 | cv = cx->blk_sub.cv; |
d819b83a DM |
3298 | /* skip DB:: code */ |
3299 | if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) { | |
3300 | *db_seqp = cx->blk_oldcop->cop_seq; | |
3301 | continue; | |
3302 | } | |
a453e28a DM |
3303 | if (cx->cx_type & CXp_SUB_RE) |
3304 | continue; | |
d819b83a | 3305 | } |
a3985cdc | 3306 | else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx)) |
70794f7b FC |
3307 | cv = cx->blk_eval.cv; |
3308 | if (cv) { | |
3309 | switch (cond) { | |
db4cf31d FC |
3310 | case FIND_RUNCV_padid_eq: |
3311 | if (!CvPADLIST(cv) | |
a56015b9 | 3312 | || PadlistNAMES(CvPADLIST(cv)) != INT2PTR(PADNAMELIST *, arg)) |
8771da69 | 3313 | continue; |
b4b0692a FC |
3314 | return cv; |
3315 | case FIND_RUNCV_level_eq: | |
db4cf31d | 3316 | if (level++ != arg) continue; |
70794f7b FC |
3317 | /* GERONIMO! */ |
3318 | default: | |
3319 | return cv; | |
3320 | } | |
3321 | } | |
a3985cdc DM |
3322 | } |
3323 | } | |
db4cf31d | 3324 | return cond == FIND_RUNCV_padid_eq ? NULL : PL_main_cv; |
a3985cdc DM |
3325 | } |
3326 | ||
3327 | ||
27e90453 DM |
3328 | /* Run yyparse() in a setjmp wrapper. Returns: |
3329 | * 0: yyparse() successful | |
3330 | * 1: yyparse() failed | |
3331 | * 3: yyparse() died | |
3332 | */ | |
3333 | STATIC int | |
28ac2b49 | 3334 | S_try_yyparse(pTHX_ int gramtype) |
27e90453 DM |
3335 | { |
3336 | int ret; | |
3337 | dJMPENV; | |
3338 | ||
3339 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3340 | JMPENV_PUSH(ret); | |
3341 | switch (ret) { | |
3342 | case 0: | |
28ac2b49 | 3343 | ret = yyparse(gramtype) ? 1 : 0; |
27e90453 DM |
3344 | break; |
3345 | case 3: | |
3346 | break; | |
3347 | default: | |
3348 | JMPENV_POP; | |
3349 | JMPENV_JUMP(ret); | |
118e2215 | 3350 | assert(0); /* NOTREACHED */ |
27e90453 DM |
3351 | } |
3352 | JMPENV_POP; | |
3353 | return ret; | |
3354 | } | |
3355 | ||
3356 | ||
104a8185 DM |
3357 | /* Compile a require/do or an eval ''. |
3358 | * | |
a3985cdc | 3359 | * outside is the lexically enclosing CV (if any) that invoked us. |
104a8185 DM |
3360 | * seq is the current COP scope value. |
3361 | * hh is the saved hints hash, if any. | |
3362 | * | |
410be5db | 3363 | * Returns a bool indicating whether the compile was successful; if so, |
104a8185 DM |
3364 | * PL_eval_start contains the first op of the compiled code; otherwise, |
3365 | * pushes undef. | |
3366 | * | |
3367 | * This function is called from two places: pp_require and pp_entereval. | |
3368 | * These can be distinguished by whether PL_op is entereval. | |
7d116edc FC |
3369 | */ |
3370 | ||
410be5db | 3371 | STATIC bool |
104a8185 | 3372 | S_doeval(pTHX_ int gimme, CV* outside, U32 seq, HV *hh) |
a0d0e21e | 3373 | { |
27da23d5 | 3374 | dVAR; dSP; |
46c461b5 | 3375 | OP * const saveop = PL_op; |
104a8185 | 3376 | bool clear_hints = saveop->op_type != OP_ENTEREVAL; |
f45b078d | 3377 | COP * const oldcurcop = PL_curcop; |
26c9400e | 3378 | bool in_require = (saveop->op_type == OP_REQUIRE); |
27e90453 | 3379 | int yystatus; |
676a678a | 3380 | CV *evalcv; |
a0d0e21e | 3381 | |
27e90453 | 3382 | PL_in_eval = (in_require |
6dc8a9e4 | 3383 | ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL)) |
a1941760 DM |
3384 | : (EVAL_INEVAL | |
3385 | ((PL_op->op_private & OPpEVAL_RE_REPARSING) | |
3386 | ? EVAL_RE_REPARSING : 0))); | |
a0d0e21e | 3387 | |
1ce6579f | 3388 | PUSHMARK(SP); |
3389 | ||
676a678a Z |
3390 | evalcv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
3391 | CvEVAL_on(evalcv); | |
2090ab20 | 3392 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); |
676a678a | 3393 | cxstack[cxstack_ix].blk_eval.cv = evalcv; |
86a64801 | 3394 | cxstack[cxstack_ix].blk_gimme = gimme; |
2090ab20 | 3395 | |
676a678a Z |
3396 | CvOUTSIDE_SEQ(evalcv) = seq; |
3397 | CvOUTSIDE(evalcv) = MUTABLE_CV(SvREFCNT_inc_simple(outside)); | |
a3985cdc | 3398 | |
dd2155a4 | 3399 | /* set up a scratch pad */ |
a0d0e21e | 3400 | |
676a678a | 3401 | CvPADLIST(evalcv) = pad_new(padnew_SAVE); |
cecbe010 | 3402 | PL_op = NULL; /* avoid PL_op and PL_curpad referring to different CVs */ |
2c05e328 | 3403 | |
07055b4c | 3404 | |
81d86705 | 3405 | if (!PL_madskills) |
676a678a | 3406 | SAVEMORTALIZESV(evalcv); /* must remain until end of current statement */ |
748a9306 | 3407 | |
a0d0e21e LW |
3408 | /* make sure we compile in the right package */ |
3409 | ||
ed094faf | 3410 | if (CopSTASH_ne(PL_curcop, PL_curstash)) { |
03d9f026 | 3411 | SAVEGENERICSV(PL_curstash); |
cb1ad50e FC |
3412 | PL_curstash = (HV *)CopSTASH(PL_curcop); |
3413 | if (SvTYPE(PL_curstash) != SVt_PVHV) PL_curstash = NULL; | |
3414 | else SvREFCNT_inc_simple_void(PL_curstash); | |
a0d0e21e | 3415 | } |
3c10abe3 | 3416 | /* XXX:ajgo do we really need to alloc an AV for begin/checkunit */ |
3280af22 NIS |
3417 | SAVESPTR(PL_beginav); |
3418 | PL_beginav = newAV(); | |
3419 | SAVEFREESV(PL_beginav); | |
3c10abe3 AG |
3420 | SAVESPTR(PL_unitcheckav); |
3421 | PL_unitcheckav = newAV(); | |
3422 | SAVEFREESV(PL_unitcheckav); | |
a0d0e21e | 3423 | |
81d86705 | 3424 | #ifdef PERL_MAD |
9da243ce | 3425 | SAVEBOOL(PL_madskills); |
81d86705 NC |
3426 | PL_madskills = 0; |
3427 | #endif | |
3428 | ||
104a8185 | 3429 | ENTER_with_name("evalcomp"); |
676a678a Z |
3430 | SAVESPTR(PL_compcv); |
3431 | PL_compcv = evalcv; | |
3432 | ||
a0d0e21e LW |
3433 | /* try to compile it */ |
3434 | ||
5f66b61c | 3435 | PL_eval_root = NULL; |
3280af22 | 3436 | PL_curcop = &PL_compiling; |
26c9400e | 3437 | if ((saveop->op_type != OP_REQUIRE) && (saveop->op_flags & OPf_SPECIAL)) |
faef0170 | 3438 | PL_in_eval |= EVAL_KEEPERR; |
ab69dbc2 RGS |
3439 | else |
3440 | CLEAR_ERRSV(); | |
27e90453 | 3441 | |
377b5421 DM |
3442 | SAVEHINTS(); |
3443 | if (clear_hints) { | |
3444 | PL_hints = 0; | |
3445 | hv_clear(GvHV(PL_hintgv)); | |
3446 | } | |
3447 | else { | |
3448 | PL_hints = saveop->op_private & OPpEVAL_COPHH | |
3449 | ? oldcurcop->cop_hints : saveop->op_targ; | |
4f3e2518 DM |
3450 | |
3451 | /* making 'use re eval' not be in scope when compiling the | |
3452 | * qr/mabye_has_runtime_code_block/ ensures that we don't get | |
3453 | * infinite recursion when S_has_runtime_code() gives a false | |
3454 | * positive: the second time round, HINT_RE_EVAL isn't set so we | |
3455 | * don't bother calling S_has_runtime_code() */ | |
3456 | if (PL_in_eval & EVAL_RE_REPARSING) | |
3457 | PL_hints &= ~HINT_RE_EVAL; | |
3458 | ||
377b5421 DM |
3459 | if (hh) { |
3460 | /* SAVEHINTS created a new HV in PL_hintgv, which we need to GC */ | |
3461 | SvREFCNT_dec(GvHV(PL_hintgv)); | |
3462 | GvHV(PL_hintgv) = hh; | |
3463 | } | |
3464 | } | |
3465 | SAVECOMPILEWARNINGS(); | |
3466 | if (clear_hints) { | |
3467 | if (PL_dowarn & G_WARN_ALL_ON) | |
3468 | PL_compiling.cop_warnings = pWARN_ALL ; | |
3469 | else if (PL_dowarn & G_WARN_ALL_OFF) | |
3470 | PL_compiling.cop_warnings = pWARN_NONE ; | |
3471 | else | |
3472 | PL_compiling.cop_warnings = pWARN_STD ; | |
3473 | } | |
3474 | else { | |
3475 | PL_compiling.cop_warnings = | |
3476 | DUP_WARNINGS(oldcurcop->cop_warnings); | |
3477 | cophh_free(CopHINTHASH_get(&PL_compiling)); | |
3478 | if (Perl_cop_fetch_label(aTHX_ oldcurcop, NULL, NULL)) { | |
3479 | /* The label, if present, is the first entry on the chain. So rather | |
3480 | than writing a blank label in front of it (which involves an | |
3481 | allocation), just use the next entry in the chain. */ | |
3482 | PL_compiling.cop_hints_hash | |
3483 | = cophh_copy(oldcurcop->cop_hints_hash->refcounted_he_next); | |
3484 | /* Check the assumption that this removed the label. */ | |
3485 | assert(Perl_cop_fetch_label(aTHX_ &PL_compiling, NULL, NULL) == NULL); | |
f45b078d | 3486 | } |
377b5421 DM |
3487 | else |
3488 | PL_compiling.cop_hints_hash = cophh_copy(oldcurcop->cop_hints_hash); | |
3489 | } | |
f45b078d | 3490 | |
a88d97bf | 3491 | CALL_BLOCK_HOOKS(bhk_eval, saveop); |
52db365a | 3492 | |
27e90453 DM |
3493 | /* note that yyparse() may raise an exception, e.g. C<BEGIN{die}>, |
3494 | * so honour CATCH_GET and trap it here if necessary */ | |
3495 | ||
28ac2b49 | 3496 | yystatus = (!in_require && CATCH_GET) ? S_try_yyparse(aTHX_ GRAMPROG) : yyparse(GRAMPROG); |
27e90453 DM |
3497 | |
3498 | if (yystatus || PL_parser->error_count || !PL_eval_root) { | |
0c58d367 | 3499 | SV **newsp; /* Used by POPBLOCK. */ |
d164302a | 3500 | PERL_CONTEXT *cx; |
27e90453 | 3501 | I32 optype; /* Used by POPEVAL. */ |
d164302a | 3502 | SV *namesv; |
eed484f9 | 3503 | SV *errsv = NULL; |
bfed75c6 | 3504 | |
d164302a GG |
3505 | cx = NULL; |
3506 | namesv = NULL; | |
27e90453 DM |
3507 | PERL_UNUSED_VAR(newsp); |
3508 | PERL_UNUSED_VAR(optype); | |
3509 | ||
c86ffc32 DM |
3510 | /* note that if yystatus == 3, then the EVAL CX block has already |
3511 | * been popped, and various vars restored */ | |
533c011a | 3512 | PL_op = saveop; |
27e90453 | 3513 | if (yystatus != 3) { |
c86ffc32 DM |
3514 | if (PL_eval_root) { |
3515 | op_free(PL_eval_root); | |
3516 | PL_eval_root = NULL; | |
3517 | } | |
27e90453 | 3518 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
377b5421 DM |
3519 | POPBLOCK(cx,PL_curpm); |
3520 | POPEVAL(cx); | |
3521 | namesv = cx->blk_eval.old_namesv; | |
bbde7ba3 | 3522 | /* POPBLOCK renders LEAVE_with_name("evalcomp") unnecessary. */ |
27e90453 | 3523 | LEAVE_with_name("eval"); /* pp_entereval knows about this LEAVE. */ |
cd6472fc | 3524 | } |
9d4ba2ae | 3525 | |
eed484f9 | 3526 | errsv = ERRSV; |
27e90453 | 3527 | if (in_require) { |
b6494f15 VP |
3528 | if (!cx) { |
3529 | /* If cx is still NULL, it means that we didn't go in the | |
3530 | * POPEVAL branch. */ | |
3531 | cx = &cxstack[cxstack_ix]; | |
3532 | assert(CxTYPE(cx) == CXt_EVAL); | |
3533 | namesv = cx->blk_eval.old_namesv; | |
3534 | } | |
3535 | (void)hv_store(GvHVn(PL_incgv), | |
ecad31f0 | 3536 | SvPVX_const(namesv), |
c60dbbc3 | 3537 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 | 3538 | &PL_sv_undef, 0); |
ecad31f0 | 3539 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
eed484f9 DD |
3540 | SVfARG(errsv |
3541 | ? errsv | |
ecad31f0 | 3542 | : newSVpvs_flags("Unknown error\n", SVs_TEMP))); |
5a844595 | 3543 | } |
9d7f88dd | 3544 | else { |
eed484f9 DD |
3545 | if (!*(SvPV_nolen_const(errsv))) { |
3546 | sv_setpvs(errsv, "Compilation error"); | |
9d7f88dd SR |
3547 | } |
3548 | } | |
2bf54cc6 | 3549 | if (gimme != G_ARRAY) PUSHs(&PL_sv_undef); |
410be5db DM |
3550 | PUTBACK; |
3551 | return FALSE; | |
a0d0e21e | 3552 | } |
104a8185 DM |
3553 | else |
3554 | LEAVE_with_name("evalcomp"); | |
3555 | ||
57843af0 | 3556 | CopLINE_set(&PL_compiling, 0); |
104a8185 | 3557 | SAVEFREEOP(PL_eval_root); |
8be227ab | 3558 | cv_forget_slab(evalcv); |
0c58d367 | 3559 | |
a0d0e21e LW |
3560 | DEBUG_x(dump_eval()); |
3561 | ||
55497cff | 3562 | /* Register with debugger: */ |
26c9400e | 3563 | if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) { |
b96d8cd9 | 3564 | CV * const cv = get_cvs("DB::postponed", 0); |
55497cff | 3565 | if (cv) { |
3566 | dSP; | |
924508f0 | 3567 | PUSHMARK(SP); |
ad64d0ec | 3568 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
55497cff | 3569 | PUTBACK; |
ad64d0ec | 3570 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
55497cff | 3571 | } |
3572 | } | |
3573 | ||
8ed49485 FC |
3574 | if (PL_unitcheckav) { |
3575 | OP *es = PL_eval_start; | |
3c10abe3 | 3576 | call_list(PL_scopestack_ix, PL_unitcheckav); |
8ed49485 FC |
3577 | PL_eval_start = es; |
3578 | } | |
3c10abe3 | 3579 | |
a0d0e21e LW |
3580 | /* compiled okay, so do it */ |
3581 | ||
676a678a | 3582 | CvDEPTH(evalcv) = 1; |
3280af22 | 3583 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
533c011a | 3584 | PL_op = saveop; /* The caller may need it. */ |
bc177e6b | 3585 | PL_parser->lex_state = LEX_NOTPARSING; /* $^S needs this. */ |
5dc0d613 | 3586 | |
410be5db DM |
3587 | PUTBACK; |
3588 | return TRUE; | |
a0d0e21e LW |
3589 | } |
3590 | ||
a6c40364 | 3591 | STATIC PerlIO * |
282b29ee | 3592 | S_check_type_and_open(pTHX_ SV *name) |
ce8abf5f SP |
3593 | { |
3594 | Stat_t st; | |
41188aa0 TC |
3595 | STRLEN len; |
3596 | const char *p = SvPV_const(name, len); | |
c8028aa6 | 3597 | int st_rc; |
df528165 | 3598 | |
7918f24d NC |
3599 | PERL_ARGS_ASSERT_CHECK_TYPE_AND_OPEN; |
3600 | ||
c8028aa6 TC |
3601 | /* checking here captures a reasonable error message when |
3602 | * PERL_DISABLE_PMC is true, but when PMC checks are enabled, the | |
3603 | * user gets a confusing message about looking for the .pmc file | |
3604 | * rather than for the .pm file. | |
3605 | * This check prevents a \0 in @INC causing problems. | |
3606 | */ | |
41188aa0 | 3607 | if (!IS_SAFE_PATHNAME(p, len, "require")) |
c8028aa6 TC |
3608 | return NULL; |
3609 | ||
b2da7ead DM |
3610 | /* we use the value of errno later to see how stat() or open() failed. |
3611 | * We don't want it set if the stat succeeded but we still failed, | |
3612 | * such as if the name exists, but is a directory */ | |
3613 | errno = 0; | |
3614 | ||
c8028aa6 TC |
3615 | st_rc = PerlLIO_stat(p, &st); |
3616 | ||
6b845e56 | 3617 | if (st_rc < 0 || S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) { |
4608196e | 3618 | return NULL; |
ce8abf5f SP |
3619 | } |
3620 | ||
97cb92d6 | 3621 | #if !defined(PERLIO_IS_STDIO) |
639dfab0 | 3622 | return PerlIO_openn(aTHX_ ":", PERL_SCRIPT_MODE, -1, 0, 0, NULL, 1, &name); |
ccb84406 | 3623 | #else |
282b29ee | 3624 | return PerlIO_open(p, PERL_SCRIPT_MODE); |
ccb84406 | 3625 | #endif |
ce8abf5f SP |
3626 | } |
3627 | ||
75c20bac | 3628 | #ifndef PERL_DISABLE_PMC |
ce8abf5f | 3629 | STATIC PerlIO * |
282b29ee | 3630 | S_doopen_pm(pTHX_ SV *name) |
b295d113 | 3631 | { |
282b29ee NC |
3632 | STRLEN namelen; |
3633 | const char *p = SvPV_const(name, namelen); | |
b295d113 | 3634 | |
7918f24d NC |
3635 | PERL_ARGS_ASSERT_DOOPEN_PM; |
3636 | ||
c8028aa6 TC |
3637 | /* check the name before trying for the .pmc name to avoid the |
3638 | * warning referring to the .pmc which the user probably doesn't | |
3639 | * know or care about | |
3640 | */ | |
41188aa0 | 3641 | if (!IS_SAFE_PATHNAME(p, namelen, "require")) |
c8028aa6 TC |
3642 | return NULL; |
3643 | ||
282b29ee | 3644 | if (namelen > 3 && memEQs(p + namelen - 3, 3, ".pm")) { |
eb70bb4a | 3645 | SV *const pmcsv = sv_newmortal(); |
a6c40364 | 3646 | Stat_t pmcstat; |
50b8ed39 | 3647 | |
eb70bb4a | 3648 | SvSetSV_nosteal(pmcsv,name); |
282b29ee | 3649 | sv_catpvn(pmcsv, "c", 1); |
50b8ed39 | 3650 | |
282b29ee NC |
3651 | if (PerlLIO_stat(SvPV_nolen_const(pmcsv), &pmcstat) >= 0) |
3652 | return check_type_and_open(pmcsv); | |
a6c40364 | 3653 | } |
282b29ee | 3654 | return check_type_and_open(name); |
75c20bac | 3655 | } |
7925835c | 3656 | #else |
282b29ee | 3657 | # define doopen_pm(name) check_type_and_open(name) |
7925835c | 3658 | #endif /* !PERL_DISABLE_PMC */ |
b295d113 | 3659 | |
511712dc TC |
3660 | /* require doesn't search for absolute names, or when the name is |
3661 | explicity relative the current directory */ | |
3662 | PERL_STATIC_INLINE bool | |
3663 | S_path_is_searchable(const char *name) | |
3664 | { | |
3665 | PERL_ARGS_ASSERT_PATH_IS_SEARCHABLE; | |
3666 | ||
3667 | if (PERL_FILE_IS_ABSOLUTE(name) | |
3668 | #ifdef WIN32 | |
3669 | || (*name == '.' && ((name[1] == '/' || | |
3670 | (name[1] == '.' && name[2] == '/')) | |
3671 | || (name[1] == '\\' || | |
3672 | ( name[1] == '.' && name[2] == '\\'))) | |
3673 | ) | |
3674 | #else | |
3675 | || (*name == '.' && (name[1] == '/' || | |
3676 | (name[1] == '.' && name[2] == '/'))) | |
3677 | #endif | |
3678 | ) | |
3679 | { | |
3680 | return FALSE; | |
3681 | } | |
3682 | else | |
3683 | return TRUE; | |
3684 | } | |
3685 | ||
a0d0e21e LW |
3686 | PP(pp_require) |
3687 | { | |
27da23d5 | 3688 | dVAR; dSP; |
eb578fdb | 3689 | PERL_CONTEXT *cx; |
a0d0e21e | 3690 | SV *sv; |
5c144d81 | 3691 | const char *name; |
6132ea6c | 3692 | STRLEN len; |
4492be7a JM |
3693 | char * unixname; |
3694 | STRLEN unixlen; | |
62f5ad7a | 3695 | #ifdef VMS |
4492be7a | 3696 | int vms_unixname = 0; |
155f4c25 | 3697 | char *unixdir; |
62f5ad7a | 3698 | #endif |
c445ea15 AL |
3699 | const char *tryname = NULL; |
3700 | SV *namesv = NULL; | |
f54cb97a | 3701 | const I32 gimme = GIMME_V; |
bbed91b5 | 3702 | int filter_has_file = 0; |
c445ea15 | 3703 | PerlIO *tryrsfp = NULL; |
34113e50 | 3704 | SV *filter_cache = NULL; |
c445ea15 AL |
3705 | SV *filter_state = NULL; |
3706 | SV *filter_sub = NULL; | |
3707 | SV *hook_sv = NULL; | |
6ec9efec JH |
3708 | SV *encoding; |
3709 | OP *op; | |
83b195e4 | 3710 | int saved_errno; |
511712dc | 3711 | bool path_searchable; |
a0d0e21e LW |
3712 | |
3713 | sv = POPs; | |
d7aa5382 | 3714 | if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) { |
d086148c | 3715 | sv = sv_2mortal(new_version(sv)); |
88010bae | 3716 | if (!Perl_sv_derived_from_pvn(aTHX_ PL_patchlevel, STR_WITH_LEN("version"), 0)) |
ac0e6a2f | 3717 | upg_version(PL_patchlevel, TRUE); |
149c1637 | 3718 | if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) { |
3cacfbb9 | 3719 | if ( vcmp(sv,PL_patchlevel) <= 0 ) |
468aa647 | 3720 | DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped", |
e753e3b1 FC |
3721 | SVfARG(sv_2mortal(vnormal(sv))), |
3722 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3723 | ); | |
468aa647 RGS |
3724 | } |
3725 | else { | |
d1029faa JP |
3726 | if ( vcmp(sv,PL_patchlevel) > 0 ) { |
3727 | I32 first = 0; | |
3728 | AV *lav; | |
3729 | SV * const req = SvRV(sv); | |
85fbaab2 | 3730 | SV * const pv = *hv_fetchs(MUTABLE_HV(req), "original", FALSE); |
d1029faa JP |
3731 | |
3732 | /* get the left hand term */ | |
502c6561 | 3733 | lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(req), "version", FALSE))); |
d1029faa JP |
3734 | |
3735 | first = SvIV(*av_fetch(lav,0,0)); | |
3736 | if ( first > (int)PERL_REVISION /* probably 'use 6.0' */ | |
85fbaab2 | 3737 | || hv_exists(MUTABLE_HV(req), "qv", 2 ) /* qv style */ |
b9f2b683 | 3738 | || av_tindex(lav) > 1 /* FP with > 3 digits */ |
d1029faa JP |
3739 | || strstr(SvPVX(pv),".0") /* FP with leading 0 */ |
3740 | ) { | |
3741 | DIE(aTHX_ "Perl %"SVf" required--this is only " | |
9d056fb0 FC |
3742 | "%"SVf", stopped", |
3743 | SVfARG(sv_2mortal(vnormal(req))), | |
3744 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3745 | ); | |
d1029faa JP |
3746 | } |
3747 | else { /* probably 'use 5.10' or 'use 5.8' */ | |
af61dbfd | 3748 | SV *hintsv; |
d1029faa JP |
3749 | I32 second = 0; |
3750 | ||
b9f2b683 | 3751 | if (av_tindex(lav)>=1) |
d1029faa JP |
3752 | second = SvIV(*av_fetch(lav,1,0)); |
3753 | ||
3754 | second /= second >= 600 ? 100 : 10; | |
af61dbfd NC |
3755 | hintsv = Perl_newSVpvf(aTHX_ "v%d.%d.0", |
3756 | (int)first, (int)second); | |
d1029faa JP |
3757 | upg_version(hintsv, TRUE); |
3758 | ||
3759 | DIE(aTHX_ "Perl %"SVf" required (did you mean %"SVf"?)" | |
3760 | "--this is only %"SVf", stopped", | |
1be7d6f3 FC |
3761 | SVfARG(sv_2mortal(vnormal(req))), |
3762 | SVfARG(sv_2mortal(vnormal(sv_2mortal(hintsv)))), | |
3763 | SVfARG(sv_2mortal(vnormal(PL_patchlevel))) | |
3764 | ); | |
d1029faa JP |
3765 | } |
3766 | } | |
468aa647 | 3767 | } |
d7aa5382 | 3768 | |
7dfde25d | 3769 | RETPUSHYES; |
a0d0e21e | 3770 | } |
5c144d81 | 3771 | name = SvPV_const(sv, len); |
6132ea6c | 3772 | if (!(name && len > 0 && *name)) |
cea2e8a9 | 3773 | DIE(aTHX_ "Null filename used"); |
41188aa0 | 3774 | if (!IS_SAFE_PATHNAME(name, len, "require")) { |
c8028aa6 TC |
3775 | DIE(aTHX_ "Can't locate %s: %s", |
3776 | pv_escape(newSVpvs_flags("",SVs_TEMP),SvPVX(sv),SvCUR(sv), | |
3777 | SvCUR(sv)*2,NULL, SvUTF8(sv)?PERL_PV_ESCAPE_UNI:0), | |
3778 | Strerror(ENOENT)); | |
3779 | } | |
4633a7c4 | 3780 | TAINT_PROPER("require"); |
4492be7a | 3781 | |
511712dc | 3782 | path_searchable = path_is_searchable(name); |
4492be7a JM |
3783 | |
3784 | #ifdef VMS | |
3785 | /* The key in the %ENV hash is in the syntax of file passed as the argument | |
3786 | * usually this is in UNIX format, but sometimes in VMS format, which | |
3787 | * can result in a module being pulled in more than once. | |
3788 | * To prevent this, the key must be stored in UNIX format if the VMS | |
3789 | * name can be translated to UNIX. | |
3790 | */ | |
155f4c25 | 3791 | |
8de90695 FC |
3792 | if ((unixname = |
3793 | tounixspec(name, SvPVX(sv_2mortal(newSVpv("", VMS_MAXRSS-1))))) | |
3794 | != NULL) { | |
4492be7a JM |
3795 | unixlen = strlen(unixname); |
3796 | vms_unixname = 1; | |
3797 | } | |
3798 | else | |
3799 | #endif | |
3800 | { | |
3801 | /* if not VMS or VMS name can not be translated to UNIX, pass it | |
3802 | * through. | |
3803 | */ | |
3804 | unixname = (char *) name; | |
3805 | unixlen = len; | |
3806 | } | |
44f8325f | 3807 | if (PL_op->op_type == OP_REQUIRE) { |
4492be7a JM |
3808 | SV * const * const svp = hv_fetch(GvHVn(PL_incgv), |
3809 | unixname, unixlen, 0); | |
44f8325f AL |
3810 | if ( svp ) { |
3811 | if (*svp != &PL_sv_undef) | |
3812 | RETPUSHYES; | |
3813 | else | |
087b5369 RD |
3814 | DIE(aTHX_ "Attempt to reload %s aborted.\n" |
3815 | "Compilation failed in require", unixname); | |
44f8325f | 3816 | } |
4d8b06f1 | 3817 | } |
a0d0e21e | 3818 | |
32aeab29 SM |
3819 | LOADING_FILE_PROBE(unixname); |
3820 | ||
a0d0e21e LW |
3821 | /* prepare to compile file */ |
3822 | ||
511712dc | 3823 | if (!path_searchable) { |
282b29ee | 3824 | /* At this point, name is SvPVX(sv) */ |
46fc3d4c | 3825 | tryname = name; |
282b29ee | 3826 | tryrsfp = doopen_pm(sv); |
bf4acbe4 | 3827 | } |
511712dc | 3828 | if (!tryrsfp && !(errno == EACCES && !path_searchable)) { |
44f8325f | 3829 | AV * const ar = GvAVn(PL_incgv); |
c70927a6 | 3830 | SSize_t i; |
748a9306 | 3831 | #ifdef VMS |
4492be7a | 3832 | if (vms_unixname) |
46fc3d4c | 3833 | #endif |
3834 | { | |
9ffd39ab | 3835 | SV *nsv = sv; |
d0328fd7 | 3836 | namesv = newSV_type(SVt_PV); |
46fc3d4c | 3837 | for (i = 0; i <= AvFILL(ar); i++) { |
df528165 | 3838 | SV * const dirsv = *av_fetch(ar, i, TRUE); |
bbed91b5 | 3839 | |
6567ce24 | 3840 | SvGETMAGIC(dirsv); |
bbed91b5 KF |
3841 | if (SvROK(dirsv)) { |
3842 | int count; | |
a3b58a99 | 3843 | SV **svp; |
bbed91b5 KF |
3844 | SV *loader = dirsv; |
3845 | ||
e14e2dc8 | 3846 | if (SvTYPE(SvRV(loader)) == SVt_PVAV |
6567ce24 | 3847 | && !SvOBJECT(SvRV(loader))) |
e14e2dc8 | 3848 | { |
502c6561 | 3849 | loader = *av_fetch(MUTABLE_AV(SvRV(loader)), 0, TRUE); |
6567ce24 | 3850 | SvGETMAGIC(loader); |
bbed91b5 KF |
3851 | } |
3852 | ||
b900a521 | 3853 | Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s", |
44f0be63 | 3854 | PTR2UV(SvRV(dirsv)), name); |
349d4f2f | 3855 | tryname = SvPVX_const(namesv); |
c445ea15 | 3856 | tryrsfp = NULL; |
bbed91b5 | 3857 | |
9ffd39ab FC |
3858 | if (SvPADTMP(nsv)) { |
3859 | nsv = sv_newmortal(); | |
3860 | SvSetSV_nosteal(nsv,sv); | |
3861 | } | |
901ee108 FC |
3862 | |
3863 | ENTER_with_name("call_INC"); | |
3864 | SAVETMPS; | |
bbed91b5 KF |
3865 | EXTEND(SP, 2); |
3866 | ||
3867 | PUSHMARK(SP); | |
3868 | PUSHs(dirsv); | |
9ffd39ab | 3869 | PUSHs(nsv); |
bbed91b5 | 3870 | PUTBACK; |
6567ce24 FC |
3871 | if (SvGMAGICAL(loader)) { |
3872 | SV *l = sv_newmortal(); | |
3873 | sv_setsv_nomg(l, loader); | |
3874 | loader = l; | |
3875 | } | |
e982885c NC |
3876 | if (sv_isobject(loader)) |
3877 | count = call_method("INC", G_ARRAY); | |
3878 | else | |
3879 | count = call_sv(loader, G_ARRAY); | |
bbed91b5 KF |
3880 | SPAGAIN; |
3881 | ||
3882 | if (count > 0) { | |
3883 | int i = 0; | |
3884 | SV *arg; | |
3885 | ||
3886 | SP -= count - 1; | |
3887 | arg = SP[i++]; | |
3888 | ||
34113e50 NC |
3889 | if (SvROK(arg) && (SvTYPE(SvRV(arg)) <= SVt_PVLV) |
3890 | && !isGV_with_GP(SvRV(arg))) { | |
3891 | filter_cache = SvRV(arg); | |
34113e50 NC |
3892 | |
3893 | if (i < count) { | |
3894 | arg = SP[i++]; | |
3895 | } | |
3896 | } | |
3897 | ||
6e592b3a | 3898 | if (SvROK(arg) && isGV_with_GP(SvRV(arg))) { |
bbed91b5 KF |
3899 | arg = SvRV(arg); |
3900 | } | |
3901 | ||
6e592b3a | 3902 | if (isGV_with_GP(arg)) { |
159b6efe | 3903 | IO * const io = GvIO((const GV *)arg); |
bbed91b5 KF |
3904 | |
3905 | ++filter_has_file; | |
3906 | ||
3907 | if (io) { | |
3908 | tryrsfp = IoIFP(io); | |
0f7de14d NC |
3909 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { |
3910 | PerlIO_close(IoOFP(io)); | |
bbed91b5 | 3911 | } |
0f7de14d NC |
3912 | IoIFP(io) = NULL; |
3913 | IoOFP(io) = NULL; | |
bbed91b5 KF |
3914 | } |
3915 | ||
3916 | if (i < count) { | |
3917 | arg = SP[i++]; | |
3918 | } | |
3919 | } | |
3920 | ||
3921 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) { | |
3922 | filter_sub = arg; | |
74c765eb | 3923 | SvREFCNT_inc_simple_void_NN(filter_sub); |
bbed91b5 KF |
3924 | |
3925 | if (i < count) { | |
3926 | filter_state = SP[i]; | |
b37c2d43 | 3927 | SvREFCNT_inc_simple_void(filter_state); |
bbed91b5 | 3928 | } |
34113e50 | 3929 | } |
bbed91b5 | 3930 | |
34113e50 NC |
3931 | if (!tryrsfp && (filter_cache || filter_sub)) { |
3932 | tryrsfp = PerlIO_open(BIT_BUCKET, | |
3933 | PERL_SCRIPT_MODE); | |
bbed91b5 | 3934 | } |
1d06aecd | 3935 | SP--; |
bbed91b5 KF |
3936 | } |
3937 | ||
c39fcc09 FC |
3938 | /* FREETMPS may free our filter_cache */ |
3939 | SvREFCNT_inc_simple_void(filter_cache); | |
3940 | ||
bbed91b5 KF |
3941 | PUTBACK; |
3942 | FREETMPS; | |
d343c3ef | 3943 | LEAVE_with_name("call_INC"); |
bbed91b5 | 3944 | |
c39fcc09 FC |
3945 | /* Now re-mortalize it. */ |
3946 | sv_2mortal(filter_cache); | |
3947 | ||
c5f55552 NC |
3948 | /* Adjust file name if the hook has set an %INC entry. |
3949 | This needs to happen after the FREETMPS above. */ | |
3950 | svp = hv_fetch(GvHVn(PL_incgv), name, len, 0); | |
3951 | if (svp) | |
3952 | tryname = SvPV_nolen_const(*svp); | |
3953 | ||
bbed91b5 | 3954 | if (tryrsfp) { |
89ccab8c | 3955 | hook_sv = dirsv; |
bbed91b5 KF |
3956 | break; |
3957 | } | |
3958 | ||
3959 | filter_has_file = 0; | |
9b7d7782 | 3960 | filter_cache = NULL; |
bbed91b5 KF |
3961 | if (filter_state) { |
3962 | SvREFCNT_dec(filter_state); | |
c445ea15 | 3963 | filter_state = NULL; |
bbed91b5 KF |
3964 | } |
3965 | if (filter_sub) { | |
3966 | SvREFCNT_dec(filter_sub); | |
c445ea15 | 3967 | filter_sub = NULL; |
bbed91b5 KF |
3968 | } |
3969 | } | |
3970 | else { | |
511712dc | 3971 | if (path_searchable) { |
b640a14a NC |
3972 | const char *dir; |
3973 | STRLEN dirlen; | |
3974 | ||
3975 | if (SvOK(dirsv)) { | |
6567ce24 | 3976 | dir = SvPV_nomg_const(dirsv, dirlen); |
b640a14a NC |
3977 | } else { |
3978 | dir = ""; | |
3979 | dirlen = 0; | |
3980 | } | |
3981 | ||
ddc65b67 CB |
3982 | if (!IS_SAFE_SYSCALL(dir, dirlen, "@INC entry", "require")) |
3983 | continue; | |
e37778c2 | 3984 | #ifdef VMS |
8de90695 FC |
3985 | if ((unixdir = |
3986 | tounixpath(dir, SvPVX(sv_2mortal(newSVpv("", VMS_MAXRSS-1))))) | |
3987 | == NULL) | |
bbed91b5 KF |
3988 | continue; |
3989 | sv_setpv(namesv, unixdir); | |
3990 | sv_catpv(namesv, unixname); | |
e37778c2 NC |
3991 | #else |
3992 | # ifdef __SYMBIAN32__ | |
27da23d5 JH |
3993 | if (PL_origfilename[0] && |
3994 | PL_origfilename[1] == ':' && | |
3995 | !(dir[0] && dir[1] == ':')) | |
3996 | Perl_sv_setpvf(aTHX_ namesv, | |
3997 | "%c:%s\\%s", | |
3998 | PL_origfilename[0], | |
3999 | dir, name); | |
4000 | else | |
4001 | Perl_sv_setpvf(aTHX_ namesv, | |
4002 | "%s\\%s", | |
4003 | dir, name); | |
e37778c2 | 4004 | # else |
b640a14a NC |
4005 | /* The equivalent of |
4006 | Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name); | |
4007 | but without the need to parse the format string, or | |
4008 | call strlen on either pointer, and with the correct | |
4009 | allocation up front. */ | |
4010 | { | |
4011 | char *tmp = SvGROW(namesv, dirlen + len + 2); | |
4012 | ||
4013 | memcpy(tmp, dir, dirlen); | |
4014 | tmp +=dirlen; | |
6b0bdd7f MH |
4015 | |
4016 | /* Avoid '<dir>//<file>' */ | |
4017 | if (!dirlen || *(tmp-1) != '/') { | |
4018 | *tmp++ = '/'; | |
9fdd5a7a MH |
4019 | } else { |
4020 | /* So SvCUR_set reports the correct length below */ | |
4021 | dirlen--; | |
6b0bdd7f MH |
4022 | } |
4023 | ||
b640a14a NC |
4024 | /* name came from an SV, so it will have a '\0' at the |
4025 | end that we can copy as part of this memcpy(). */ | |
4026 | memcpy(tmp, name, len + 1); | |
4027 | ||
4028 | SvCUR_set(namesv, dirlen + len + 1); | |
282b29ee | 4029 | SvPOK_on(namesv); |
b640a14a | 4030 | } |
27da23d5 | 4031 | # endif |
bf4acbe4 | 4032 | #endif |
bbed91b5 | 4033 | TAINT_PROPER("require"); |
349d4f2f | 4034 | tryname = SvPVX_const(namesv); |
282b29ee | 4035 | tryrsfp = doopen_pm(namesv); |
bbed91b5 | 4036 | if (tryrsfp) { |
e63be746 RGS |
4037 | if (tryname[0] == '.' && tryname[1] == '/') { |
4038 | ++tryname; | |
4910606a | 4039 | while (*++tryname == '/') {} |
e63be746 | 4040 | } |
bbed91b5 KF |
4041 | break; |
4042 | } | |
2433d39e BF |
4043 | else if (errno == EMFILE || errno == EACCES) { |
4044 | /* no point in trying other paths if out of handles; | |
4045 | * on the other hand, if we couldn't open one of the | |
4046 | * files, then going on with the search could lead to | |
4047 | * unexpected results; see perl #113422 | |
4048 | */ | |
4049 | break; | |
4050 | } | |
be4b629d | 4051 | } |
46fc3d4c | 4052 | } |
a0d0e21e LW |
4053 | } |
4054 | } | |
4055 | } | |
83b195e4 | 4056 | saved_errno = errno; /* sv_2mortal can realloc things */ |
b2ef6d44 | 4057 | sv_2mortal(namesv); |
a0d0e21e | 4058 | if (!tryrsfp) { |
533c011a | 4059 | if (PL_op->op_type == OP_REQUIRE) { |
83b195e4 | 4060 | if(saved_errno == EMFILE || saved_errno == EACCES) { |
c9d5e35e | 4061 | /* diag_listed_as: Can't locate %s */ |
83b195e4 | 4062 | DIE(aTHX_ "Can't locate %s: %s", name, Strerror(saved_errno)); |
e31de809 SP |
4063 | } else { |
4064 | if (namesv) { /* did we lookup @INC? */ | |
44f8325f | 4065 | AV * const ar = GvAVn(PL_incgv); |
c70927a6 | 4066 | SSize_t i; |
1e5f02b3 | 4067 | SV *const msg = newSVpvs_flags("", SVs_TEMP); |
c9d5e35e NC |
4068 | SV *const inc = newSVpvs_flags("", SVs_TEMP); |
4069 | for (i = 0; i <= AvFILL(ar); i++) { | |
4070 | sv_catpvs(inc, " "); | |
4071 | sv_catsv(inc, *av_fetch(ar, i, TRUE)); | |
4072 | } | |
f7ee53b5 PJ |
4073 | if (len >= 4 && memEQ(name + len - 3, ".pm", 4)) { |
4074 | const char *c, *e = name + len - 3; | |
4075 | sv_catpv(msg, " (you may need to install the "); | |
4076 | for (c = name; c < e; c++) { | |
4077 | if (*c == '/') { | |
4078 | sv_catpvn(msg, "::", 2); | |
4079 | } | |
4080 | else { | |
4081 | sv_catpvn(msg, c, 1); | |
4082 | } | |
4083 | } | |
4084 | sv_catpv(msg, " module)"); | |
4085 | } | |
4086 | else if (len >= 2 && memEQ(name + len - 2, ".h", 3)) { | |
4087 | sv_catpv(msg, " (change .h to .ph maybe?) (did you run h2ph?)"); | |
4088 | } | |
4089 | else if (len >= 3 && memEQ(name + len - 3, ".ph", 4)) { | |
4090 | sv_catpv(msg, " (did you run h2ph?)"); | |
4091 | } | |
c9d5e35e NC |
4092 | |
4093 | /* diag_listed_as: Can't locate %s */ | |
4094 | DIE(aTHX_ | |
f7ee53b5 PJ |
4095 | "Can't locate %s in @INC%" SVf " (@INC contains:%" SVf ")", |
4096 | name, msg, inc); | |
c9d5e35e | 4097 | } |
2683423c | 4098 | } |
c9d5e35e | 4099 | DIE(aTHX_ "Can't locate %s", name); |
a0d0e21e LW |
4100 | } |
4101 | ||
a3ff80c1 | 4102 | CLEAR_ERRSV(); |
a0d0e21e LW |
4103 | RETPUSHUNDEF; |
4104 | } | |
d8bfb8bd | 4105 | else |
93189314 | 4106 | SETERRNO(0, SS_NORMAL); |
a0d0e21e LW |
4107 | |
4108 | /* Assume success here to prevent recursive requirement. */ | |
238d24b4 | 4109 | /* name is never assigned to again, so len is still strlen(name) */ |
d3a4e64e | 4110 | /* Check whether a hook in @INC has already filled %INC */ |
44f8325f | 4111 | if (!hook_sv) { |
4492be7a | 4112 | (void)hv_store(GvHVn(PL_incgv), |
b2ef6d44 | 4113 | unixname, unixlen, newSVpv(tryname,0),0); |
44f8325f | 4114 | } else { |
4492be7a | 4115 | SV** const svp = hv_fetch(GvHVn(PL_incgv), unixname, unixlen, 0); |
44f8325f | 4116 | if (!svp) |
4492be7a JM |
4117 | (void)hv_store(GvHVn(PL_incgv), |
4118 | unixname, unixlen, SvREFCNT_inc_simple(hook_sv), 0 ); | |
d3a4e64e | 4119 | } |
a0d0e21e | 4120 | |
d343c3ef | 4121 | ENTER_with_name("eval"); |
a0d0e21e | 4122 | SAVETMPS; |
b2ef6d44 FC |
4123 | SAVECOPFILE_FREE(&PL_compiling); |
4124 | CopFILE_set(&PL_compiling, tryname); | |
8eaa0acf | 4125 | lex_start(NULL, tryrsfp, 0); |
e50aee73 | 4126 | |
34113e50 | 4127 | if (filter_sub || filter_cache) { |
4464f08e NC |
4128 | /* We can use the SvPV of the filter PVIO itself as our cache, rather |
4129 | than hanging another SV from it. In turn, filter_add() optionally | |
4130 | takes the SV to use as the filter (or creates a new SV if passed | |
4131 | NULL), so simply pass in whatever value filter_cache has. */ | |
9b7d7782 FC |
4132 | SV * const fc = filter_cache ? newSV(0) : NULL; |
4133 | SV *datasv; | |
4134 | if (fc) sv_copypv(fc, filter_cache); | |
4135 | datasv = filter_add(S_run_user_filter, fc); | |
bbed91b5 | 4136 | IoLINES(datasv) = filter_has_file; |
159b6efe NC |
4137 | IoTOP_GV(datasv) = MUTABLE_GV(filter_state); |
4138 | IoBOTTOM_GV(datasv) = MUTABLE_GV(filter_sub); | |
bbed91b5 KF |
4139 | } |
4140 | ||
4141 | /* switch to eval mode */ | |
a0d0e21e | 4142 | PUSHBLOCK(cx, CXt_EVAL, SP); |
6b75f042 | 4143 | PUSHEVAL(cx, name); |
f39bc417 | 4144 | cx->blk_eval.retop = PL_op->op_next; |
a0d0e21e | 4145 | |
57843af0 GS |
4146 | SAVECOPLINE(&PL_compiling); |
4147 | CopLINE_set(&PL_compiling, 0); | |
a0d0e21e LW |
4148 | |
4149 | PUTBACK; | |
6ec9efec JH |
4150 | |
4151 | /* Store and reset encoding. */ | |
4152 | encoding = PL_encoding; | |
c445ea15 | 4153 | PL_encoding = NULL; |
6ec9efec | 4154 | |
104a8185 | 4155 | if (doeval(gimme, NULL, PL_curcop->cop_seq, NULL)) |
410be5db DM |
4156 | op = DOCATCH(PL_eval_start); |
4157 | else | |
4158 | op = PL_op->op_next; | |
bfed75c6 | 4159 | |
6ec9efec JH |
4160 | /* Restore encoding. */ |
4161 | PL_encoding = encoding; | |
4162 | ||
32aeab29 SM |
4163 | LOADED_FILE_PROBE(unixname); |
4164 | ||
6ec9efec | 4165 | return op; |
a0d0e21e LW |
4166 | } |
4167 | ||
996c9baa VP |
4168 | /* This is a op added to hold the hints hash for |
4169 | pp_entereval. The hash can be modified by the code | |
4170 | being eval'ed, so we return a copy instead. */ | |
4171 | ||
4172 | PP(pp_hintseval) | |
4173 | { | |
4174 | dVAR; | |
4175 | dSP; | |
defdfed5 | 4176 | mXPUSHs(MUTABLE_SV(hv_copy_hints_hv(MUTABLE_HV(cSVOP_sv)))); |
996c9baa VP |
4177 | RETURN; |
4178 | } | |
4179 | ||
4180 | ||
a0d0e21e LW |
4181 | PP(pp_entereval) |
4182 | { | |
27da23d5 | 4183 | dVAR; dSP; |
eb578fdb | 4184 | PERL_CONTEXT *cx; |
0d863452 | 4185 | SV *sv; |
890ce7af | 4186 | const I32 gimme = GIMME_V; |
fd06b02c | 4187 | const U32 was = PL_breakable_sub_gen; |
83ee9e09 | 4188 | char tbuf[TYPE_DIGITS(long) + 12]; |
78da7625 | 4189 | bool saved_delete = FALSE; |
83ee9e09 | 4190 | char *tmpbuf = tbuf; |
a0d0e21e | 4191 | STRLEN len; |
a3985cdc | 4192 | CV* runcv; |
0abcdfa4 | 4193 | U32 seq, lex_flags = 0; |
c445ea15 | 4194 | HV *saved_hh = NULL; |
60d63348 | 4195 | const bool bytes = PL_op->op_private & OPpEVAL_BYTES; |
e389bba9 | 4196 | |
0d863452 | 4197 | if (PL_op->op_private & OPpEVAL_HAS_HH) { |
85fbaab2 | 4198 | saved_hh = MUTABLE_HV(SvREFCNT_inc(POPs)); |
0d863452 | 4199 | } |
bc344123 FC |
4200 | else if (PL_hints & HINT_LOCALIZE_HH || ( |
4201 | PL_op->op_private & OPpEVAL_COPHH | |
4202 | && PL_curcop->cop_hints & HINT_LOCALIZE_HH | |
4203 | )) { | |
7d789282 FC |
4204 | saved_hh = cop_hints_2hv(PL_curcop, 0); |
4205 | hv_magic(saved_hh, NULL, PERL_MAGIC_hints); | |
4206 | } | |
0d863452 | 4207 | sv = POPs; |
895b760f DM |
4208 | if (!SvPOK(sv)) { |
4209 | /* make sure we've got a plain PV (no overload etc) before testing | |
4210 | * for taint. Making a copy here is probably overkill, but better | |
4211 | * safe than sorry */ | |
0479a84a NC |
4212 | STRLEN len; |
4213 | const char * const p = SvPV_const(sv, len); | |
4214 | ||
4215 | sv = newSVpvn_flags(p, len, SVs_TEMP | SvUTF8(sv)); | |
0abcdfa4 | 4216 | lex_flags |= LEX_START_COPIED; |
7d789282 | 4217 | |
60d63348 | 4218 | if (bytes && SvUTF8(sv)) |
7d789282 FC |
4219 | SvPVbyte_force(sv, len); |
4220 | } | |
60d63348 | 4221 | else if (bytes && SvUTF8(sv)) { |
e1fa07e3 | 4222 | /* Don't modify someone else's scalar */ |
7d789282 FC |
4223 | STRLEN len; |
4224 | sv = newSVsv(sv); | |
5cefc8c1 | 4225 | (void)sv_2mortal(sv); |
7d789282 | 4226 | SvPVbyte_force(sv,len); |
0abcdfa4 | 4227 | lex_flags |= LEX_START_COPIED; |
895b760f | 4228 | } |
a0d0e21e | 4229 | |
af2d3def | 4230 | TAINT_IF(SvTAINTED(sv)); |
748a9306 | 4231 | TAINT_PROPER("eval"); |
a0d0e21e | 4232 | |
d343c3ef | 4233 | ENTER_with_name("eval"); |
0abcdfa4 | 4234 | lex_start(sv, NULL, lex_flags | (PL_op->op_private & OPpEVAL_UNICODE |
60d63348 FC |
4235 | ? LEX_IGNORE_UTF8_HINTS |
4236 | : bytes ? LEX_EVALBYTES : LEX_START_SAME_FILTER | |
0abcdfa4 | 4237 | ) |
60d63348 | 4238 | ); |
748a9306 | 4239 | SAVETMPS; |
ac27b0f5 | 4240 | |
a0d0e21e LW |
4241 | /* switch to eval mode */ |
4242 | ||
83ee9e09 | 4243 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
8b38226b AL |
4244 | SV * const temp_sv = sv_newmortal(); |
4245 | Perl_sv_setpvf(aTHX_ temp_sv, "_<(eval %lu)[%s:%"IVdf"]", | |
83ee9e09 GS |
4246 | (unsigned long)++PL_evalseq, |
4247 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
8b38226b AL |
4248 | tmpbuf = SvPVX(temp_sv); |
4249 | len = SvCUR(temp_sv); | |
83ee9e09 GS |
4250 | } |
4251 | else | |
d9fad198 | 4252 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(eval %lu)", (unsigned long)++PL_evalseq); |
f4dd75d9 | 4253 | SAVECOPFILE_FREE(&PL_compiling); |
57843af0 | 4254 | CopFILE_set(&PL_compiling, tmpbuf+2); |
f4dd75d9 | 4255 | SAVECOPLINE(&PL_compiling); |
57843af0 | 4256 | CopLINE_set(&PL_compiling, 1); |
d819b83a DM |
4257 | /* special case: an eval '' executed within the DB package gets lexically |
4258 | * placed in the first non-DB CV rather than the current CV - this | |
4259 | * allows the debugger to execute code, find lexicals etc, in the | |
4260 | * scope of the code being debugged. Passing &seq gets find_runcv | |
4261 | * to do the dirty work for us */ | |
4262 | runcv = find_runcv(&seq); | |
a0d0e21e | 4263 | |
6b35e009 | 4264 | PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP); |
6b75f042 | 4265 | PUSHEVAL(cx, 0); |
f39bc417 | 4266 | cx->blk_eval.retop = PL_op->op_next; |
a0d0e21e LW |
4267 | |
4268 | /* prepare to compile string */ | |
4269 | ||
a44e3ce2 | 4270 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) |
bdc0bf6f | 4271 | save_lines(CopFILEAV(&PL_compiling), PL_parser->linestr); |
78da7625 | 4272 | else { |
c8cb8d55 FC |
4273 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
4274 | deleting the eval's FILEGV from the stash before gv_check() runs | |
4275 | (i.e. before run-time proper). To work around the coredump that | |
4276 | ensues, we always turn GvMULTI_on for any globals that were | |
4277 | introduced within evals. See force_ident(). GSAR 96-10-12 */ | |
78da7625 FC |
4278 | char *const safestr = savepvn(tmpbuf, len); |
4279 | SAVEDELETE(PL_defstash, safestr, len); | |
4280 | saved_delete = TRUE; | |
4281 | } | |
4282 | ||
a0d0e21e | 4283 | PUTBACK; |
f9bddea7 | 4284 | |
104a8185 | 4285 | if (doeval(gimme, runcv, seq, saved_hh)) { |
f9bddea7 NC |
4286 | if (was != PL_breakable_sub_gen /* Some subs defined here. */ |
4287 | ? (PERLDB_LINE || PERLDB_SAVESRC) | |
4288 | : PERLDB_SAVESRC_NOSUBS) { | |
4289 | /* Retain the filegv we created. */ | |
78da7625 | 4290 | } else if (!saved_delete) { |
f9bddea7 NC |
4291 | char *const safestr = savepvn(tmpbuf, len); |
4292 | SAVEDELETE(PL_defstash, safestr, len); | |
4293 | } | |
4294 | return DOCATCH(PL_eval_start); | |
4295 | } else { | |
486ec47a | 4296 | /* We have already left the scope set up earlier thanks to the LEAVE |
f9bddea7 | 4297 | in doeval(). */ |
eb044b10 NC |
4298 | if (was != PL_breakable_sub_gen /* Some subs defined here. */ |
4299 | ? (PERLDB_LINE || PERLDB_SAVESRC) | |
4300 | : PERLDB_SAVESRC_INVALID) { | |
f9bddea7 | 4301 | /* Retain the filegv we created. */ |
7857f360 | 4302 | } else if (!saved_delete) { |
f9bddea7 NC |
4303 | (void)hv_delete(PL_defstash, tmpbuf, len, G_DISCARD); |
4304 | } | |
4305 | return PL_op->op_next; | |
4306 | } | |
a0d0e21e LW |
4307 | } |
4308 | ||
4309 | PP(pp_leaveeval) | |
4310 | { | |
27da23d5 | 4311 | dVAR; dSP; |
a0d0e21e LW |
4312 | SV **newsp; |
4313 | PMOP *newpm; | |
4314 | I32 gimme; | |
eb578fdb | 4315 | PERL_CONTEXT *cx; |
a0d0e21e | 4316 | OP *retop; |
06b5626a | 4317 | const U8 save_flags = PL_op -> op_flags; |
a0d0e21e | 4318 | I32 optype; |
b6494f15 | 4319 | SV *namesv; |
676a678a | 4320 | CV *evalcv; |
a0d0e21e | 4321 | |
011c3814 | 4322 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
4323 | POPBLOCK(cx,newpm); |
4324 | POPEVAL(cx); | |
b6494f15 | 4325 | namesv = cx->blk_eval.old_namesv; |
f39bc417 | 4326 | retop = cx->blk_eval.retop; |
676a678a | 4327 | evalcv = cx->blk_eval.cv; |
a0d0e21e | 4328 | |
a1f49e72 | 4329 | TAINT_NOT; |
b9d76716 | 4330 | SP = adjust_stack_on_leave((gimme == G_VOID) ? SP : newsp, SP, newsp, |
2ec7f6f2 | 4331 | gimme, SVs_TEMP, FALSE); |
3280af22 | 4332 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 4333 | |
4fdae800 | 4334 | #ifdef DEBUGGING |
676a678a | 4335 | assert(CvDEPTH(evalcv) == 1); |
4fdae800 | 4336 | #endif |
676a678a | 4337 | CvDEPTH(evalcv) = 0; |
4fdae800 | 4338 | |
1ce6579f | 4339 | if (optype == OP_REQUIRE && |
924508f0 | 4340 | !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp)) |
54310121 | 4341 | { |
1ce6579f | 4342 | /* Unassume the success we assumed earlier. */ |
b6494f15 | 4343 | (void)hv_delete(GvHVn(PL_incgv), |
ecad31f0 | 4344 | SvPVX_const(namesv), |
c60dbbc3 | 4345 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 VP |
4346 | G_DISCARD); |
4347 | retop = Perl_die(aTHX_ "%"SVf" did not return a true value", | |
4348 | SVfARG(namesv)); | |
c5df3096 | 4349 | /* die_unwind() did LEAVE, or we won't be here */ |
f46d017c GS |
4350 | } |
4351 | else { | |
d343c3ef | 4352 | LEAVE_with_name("eval"); |
8433848b | 4353 | if (!(save_flags & OPf_SPECIAL)) { |
ab69dbc2 | 4354 | CLEAR_ERRSV(); |
8433848b | 4355 | } |
a0d0e21e | 4356 | } |
a0d0e21e LW |
4357 | |
4358 | RETURNOP(retop); | |
4359 | } | |
4360 | ||
edb2152a NC |
4361 | /* Common code for Perl_call_sv and Perl_fold_constants, put here to keep it |
4362 | close to the related Perl_create_eval_scope. */ | |
4363 | void | |
4364 | Perl_delete_eval_scope(pTHX) | |
a0d0e21e | 4365 | { |
edb2152a NC |
4366 | SV **newsp; |
4367 | PMOP *newpm; | |
4368 | I32 gimme; | |
eb578fdb | 4369 | PERL_CONTEXT *cx; |
edb2152a NC |
4370 | I32 optype; |
4371 | ||
4372 | POPBLOCK(cx,newpm); | |
4373 | POPEVAL(cx); | |
4374 | PL_curpm = newpm; | |
d343c3ef | 4375 | LEAVE_with_name("eval_scope"); |
edb2152a NC |
4376 | PERL_UNUSED_VAR(newsp); |
4377 | PERL_UNUSED_VAR(gimme); | |
4378 | PERL_UNUSED_VAR(optype); | |
4379 | } | |
a0d0e21e | 4380 | |
edb2152a NC |
4381 | /* Common-ish code salvaged from Perl_call_sv and pp_entertry, because it was |
4382 | also needed by Perl_fold_constants. */ | |
4383 | PERL_CONTEXT * | |
4384 | Perl_create_eval_scope(pTHX_ U32 flags) | |
4385 | { | |
4386 | PERL_CONTEXT *cx; | |
4387 | const I32 gimme = GIMME_V; | |
4388 | ||
d343c3ef | 4389 | ENTER_with_name("eval_scope"); |
a0d0e21e LW |
4390 | SAVETMPS; |
4391 | ||
edb2152a | 4392 | PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); |
6b75f042 | 4393 | PUSHEVAL(cx, 0); |
a0d0e21e | 4394 | |
faef0170 | 4395 | PL_in_eval = EVAL_INEVAL; |
edb2152a NC |
4396 | if (flags & G_KEEPERR) |
4397 | PL_in_eval |= EVAL_KEEPERR; | |
ab69dbc2 RGS |
4398 | else |
4399 | CLEAR_ERRSV(); | |
edb2152a NC |
4400 | if (flags & G_FAKINGEVAL) { |
4401 | PL_eval_root = PL_op; /* Only needed so that goto works right. */ | |
4402 | } | |
4403 | return cx; | |
4404 | } | |
4405 | ||
4406 | PP(pp_entertry) | |
4407 | { | |
4408 | dVAR; | |
df528165 | 4409 | PERL_CONTEXT * const cx = create_eval_scope(0); |
edb2152a | 4410 | cx->blk_eval.retop = cLOGOP->op_other->op_next; |
533c011a | 4411 | return DOCATCH(PL_op->op_next); |
a0d0e21e LW |
4412 | } |
4413 | ||
4414 | PP(pp_leavetry) | |
4415 | { | |
27da23d5 | 4416 | dVAR; dSP; |
a0d0e21e LW |
4417 | SV **newsp; |
4418 | PMOP *newpm; | |
4419 | I32 gimme; | |
eb578fdb | 4420 | PERL_CONTEXT *cx; |
a0d0e21e LW |
4421 | I32 optype; |
4422 | ||
011c3814 | 4423 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
4424 | POPBLOCK(cx,newpm); |
4425 | POPEVAL(cx); | |
9d4ba2ae | 4426 | PERL_UNUSED_VAR(optype); |
a0d0e21e | 4427 | |
a1f49e72 | 4428 | TAINT_NOT; |
2ec7f6f2 FC |
4429 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, |
4430 | SVs_PADTMP|SVs_TEMP, FALSE); | |
3280af22 | 4431 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 4432 | |
d343c3ef | 4433 | LEAVE_with_name("eval_scope"); |
ab69dbc2 | 4434 | CLEAR_ERRSV(); |
745cf2ff | 4435 | RETURN; |
a0d0e21e LW |
4436 | } |
4437 | ||
0d863452 RH |
4438 | PP(pp_entergiven) |
4439 | { | |
4440 | dVAR; dSP; | |
eb578fdb | 4441 | PERL_CONTEXT *cx; |
0d863452 RH |
4442 | const I32 gimme = GIMME_V; |
4443 | ||
d343c3ef | 4444 | ENTER_with_name("given"); |
0d863452 RH |
4445 | SAVETMPS; |
4446 | ||
b5a64814 FC |
4447 | if (PL_op->op_targ) { |
4448 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); | |
4449 | SvREFCNT_dec(PAD_SVl(PL_op->op_targ)); | |
4450 | PAD_SVl(PL_op->op_targ) = SvREFCNT_inc_NN(POPs); | |
4451 | } | |
4452 | else { | |
4453 | SAVE_DEFSV; | |
4454 | DEFSV_set(POPs); | |
4455 | } | |
0d863452 RH |
4456 | |
4457 | PUSHBLOCK(cx, CXt_GIVEN, SP); | |
4458 | PUSHGIVEN(cx); | |
4459 | ||
4460 | RETURN; | |
4461 | } | |
4462 | ||
4463 | PP(pp_leavegiven) | |
4464 | { | |
4465 | dVAR; dSP; | |
eb578fdb | 4466 | PERL_CONTEXT *cx; |
0d863452 RH |
4467 | I32 gimme; |
4468 | SV **newsp; | |
4469 | PMOP *newpm; | |
96a5add6 | 4470 | PERL_UNUSED_CONTEXT; |
0d863452 RH |
4471 | |
4472 | POPBLOCK(cx,newpm); | |
4473 | assert(CxTYPE(cx) == CXt_GIVEN); | |
0d863452 | 4474 | |
25b991bf | 4475 | TAINT_NOT; |
2ec7f6f2 FC |
4476 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, |
4477 | SVs_PADTMP|SVs_TEMP, FALSE); | |
25b991bf | 4478 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
0d863452 | 4479 | |
d343c3ef | 4480 | LEAVE_with_name("given"); |
25b991bf | 4481 | RETURN; |
0d863452 RH |
4482 | } |
4483 | ||
4484 | /* Helper routines used by pp_smartmatch */ | |
4136a0f7 | 4485 | STATIC PMOP * |
84679df5 | 4486 | S_make_matcher(pTHX_ REGEXP *re) |
0d863452 | 4487 | { |
97aff369 | 4488 | dVAR; |
0d863452 | 4489 | PMOP *matcher = (PMOP *) newPMOP(OP_MATCH, OPf_WANT_SCALAR | OPf_STACKED); |
7918f24d NC |
4490 | |
4491 | PERL_ARGS_ASSERT_MAKE_MATCHER; | |
4492 | ||
d6106309 | 4493 | PM_SETRE(matcher, ReREFCNT_inc(re)); |
7918f24d | 4494 | |
0d863452 | 4495 | SAVEFREEOP((OP *) matcher); |
d343c3ef | 4496 | ENTER_with_name("matcher"); SAVETMPS; |
0d863452 RH |
4497 | SAVEOP(); |
4498 | return matcher; | |
4499 | } | |
4500 | ||
4136a0f7 | 4501 | STATIC bool |
0d863452 RH |
4502 | S_matcher_matches_sv(pTHX_ PMOP *matcher, SV *sv) |
4503 | { | |
97aff369 | 4504 | dVAR; |
0d863452 | 4505 | dSP; |
7918f24d NC |
4506 | |
4507 | PERL_ARGS_ASSERT_MATCHER_MATCHES_SV; | |
0d863452 RH |
4508 | |
4509 | PL_op = (OP *) matcher; | |
4510 | XPUSHs(sv); | |
4511 | PUTBACK; | |
897d3989 | 4512 | (void) Perl_pp_match(aTHX); |
0d863452 RH |
4513 | SPAGAIN; |
4514 | return (SvTRUEx(POPs)); | |
4515 | } | |
4516 | ||
4136a0f7 | 4517 | STATIC void |
0d863452 RH |
4518 | S_destroy_matcher(pTHX_ PMOP *matcher) |
4519 | { | |
97aff369 | 4520 | dVAR; |
7918f24d NC |
4521 | |
4522 | PERL_ARGS_ASSERT_DESTROY_MATCHER; | |
0d863452 | 4523 | PERL_UNUSED_ARG(matcher); |
7918f24d | 4524 | |
0d863452 | 4525 | FREETMPS; |
d343c3ef | 4526 | LEAVE_with_name("matcher"); |
0d863452 RH |
4527 | } |
4528 | ||
4529 | /* Do a smart match */ | |
4530 | PP(pp_smartmatch) | |
4531 | { | |
d7c0d282 | 4532 | DEBUG_M(Perl_deb(aTHX_ "Starting smart match resolution\n")); |
be88a5c3 | 4533 | return do_smartmatch(NULL, NULL, 0); |
0d863452 RH |
4534 | } |
4535 | ||
4b021f5f RGS |
4536 | /* This version of do_smartmatch() implements the |
4537 | * table of smart matches that is found in perlsyn. | |
0d863452 | 4538 | */ |
4136a0f7 | 4539 | STATIC OP * |
be88a5c3 | 4540 | S_do_smartmatch(pTHX_ HV *seen_this, HV *seen_other, const bool copied) |
0d863452 | 4541 | { |
97aff369 | 4542 | dVAR; |
0d863452 RH |
4543 | dSP; |
4544 | ||
41e726ac | 4545 | bool object_on_left = FALSE; |
0d863452 RH |
4546 | SV *e = TOPs; /* e is for 'expression' */ |
4547 | SV *d = TOPm1s; /* d is for 'default', as in PL_defgv */ | |
a566f585 | 4548 | |
6f1401dc DM |
4549 | /* Take care only to invoke mg_get() once for each argument. |
4550 | * Currently we do this by copying the SV if it's magical. */ | |
4551 | if (d) { | |
be88a5c3 | 4552 | if (!copied && SvGMAGICAL(d)) |
6f1401dc DM |
4553 | d = sv_mortalcopy(d); |
4554 | } | |
4555 | else | |
4556 | d = &PL_sv_undef; | |
4557 | ||
4558 | assert(e); | |
4559 | if (SvGMAGICAL(e)) | |
4560 | e = sv_mortalcopy(e); | |
4561 | ||
2c9d2554 | 4562 | /* First of all, handle overload magic of the rightmost argument */ |
6d743019 | 4563 | if (SvAMAGIC(e)) { |
d7c0d282 DM |
4564 | SV * tmpsv; |
4565 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Object\n")); | |
4566 | DEBUG_M(Perl_deb(aTHX_ " attempting overload\n")); | |
4567 | ||
b900a653 | 4568 | tmpsv = amagic_call(d, e, smart_amg, AMGf_noleft); |
7c41e62e RGS |
4569 | if (tmpsv) { |
4570 | SPAGAIN; | |
4571 | (void)POPs; | |
4572 | SETs(tmpsv); | |
4573 | RETURN; | |
4574 | } | |
d7c0d282 | 4575 | DEBUG_M(Perl_deb(aTHX_ " failed to run overload method; continuing...\n")); |
7c41e62e | 4576 | } |
62ec5f58 | 4577 | |
0d863452 RH |
4578 | SP -= 2; /* Pop the values */ |
4579 | ||
0d863452 | 4580 | |
b0138e99 | 4581 | /* ~~ undef */ |
62ec5f58 | 4582 | if (!SvOK(e)) { |
d7c0d282 | 4583 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-undef\n")); |
62ec5f58 | 4584 | if (SvOK(d)) |
33570f8b RGS |
4585 | RETPUSHNO; |
4586 | else | |
62ec5f58 | 4587 | RETPUSHYES; |
33570f8b | 4588 | } |
e67b97bd | 4589 | |
d7c0d282 DM |
4590 | if (sv_isobject(e) && (SvTYPE(SvRV(e)) != SVt_REGEXP)) { |
4591 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Object\n")); | |
62ec5f58 | 4592 | Perl_croak(aTHX_ "Smart matching a non-overloaded object breaks encapsulation"); |
d7c0d282 | 4593 | } |
41e726ac RGS |
4594 | if (sv_isobject(d) && (SvTYPE(SvRV(d)) != SVt_REGEXP)) |
4595 | object_on_left = TRUE; | |
62ec5f58 | 4596 | |
b0138e99 | 4597 | /* ~~ sub */ |
a4a197da | 4598 | if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVCV) { |
0d863452 | 4599 | I32 c; |
41e726ac RGS |
4600 | if (object_on_left) { |
4601 | goto sm_any_sub; /* Treat objects like scalars */ | |
4602 | } | |
4603 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
a4a197da RGS |
4604 | /* Test sub truth for each key */ |
4605 | HE *he; | |
4606 | bool andedresults = TRUE; | |
4607 | HV *hv = (HV*) SvRV(d); | |
168ff818 | 4608 | I32 numkeys = hv_iterinit(hv); |
d7c0d282 | 4609 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-CodeRef\n")); |
168ff818 | 4610 | if (numkeys == 0) |
07edf497 | 4611 | RETPUSHYES; |
a4a197da | 4612 | while ( (he = hv_iternext(hv)) ) { |
d7c0d282 | 4613 | DEBUG_M(Perl_deb(aTHX_ " testing hash key...\n")); |
d343c3ef | 4614 | ENTER_with_name("smartmatch_hash_key_test"); |
a4a197da RGS |
4615 | SAVETMPS; |
4616 | PUSHMARK(SP); | |
4617 | PUSHs(hv_iterkeysv(he)); | |
4618 | PUTBACK; | |
4619 | c = call_sv(e, G_SCALAR); | |
4620 | SPAGAIN; | |
4621 | if (c == 0) | |
4622 | andedresults = FALSE; | |
4623 | else | |
4624 | andedresults = SvTRUEx(POPs) && andedresults; | |
4625 | FREETMPS; | |
d343c3ef | 4626 | LEAVE_with_name("smartmatch_hash_key_test"); |
a4a197da RGS |
4627 | } |
4628 | if (andedresults) | |
4629 | RETPUSHYES; | |
4630 | else | |
4631 | RETPUSHNO; | |
4632 | } | |
4633 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4634 | /* Test sub truth for each element */ | |
c70927a6 | 4635 | SSize_t i; |
a4a197da RGS |
4636 | bool andedresults = TRUE; |
4637 | AV *av = (AV*) SvRV(d); | |
b9f2b683 | 4638 | const I32 len = av_tindex(av); |
d7c0d282 | 4639 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-CodeRef\n")); |
168ff818 | 4640 | if (len == -1) |
07edf497 | 4641 | RETPUSHYES; |
a4a197da RGS |
4642 | for (i = 0; i <= len; ++i) { |
4643 | SV * const * const svp = av_fetch(av, i, FALSE); | |
d7c0d282 | 4644 | DEBUG_M(Perl_deb(aTHX_ " testing array element...\n")); |
d343c3ef | 4645 | ENTER_with_name("smartmatch_array_elem_test"); |
a4a197da RGS |
4646 | SAVETMPS; |
4647 | PUSHMARK(SP); | |
4648 | if (svp) | |
4649 | PUSHs(*svp); | |
4650 | PUTBACK; | |
4651 | c = call_sv(e, G_SCALAR); | |
4652 | SPAGAIN; | |
4653 | if (c == 0) | |
4654 | andedresults = FALSE; | |
4655 | else | |
4656 | andedresults = SvTRUEx(POPs) && andedresults; | |
4657 | FREETMPS; | |
d343c3ef | 4658 | LEAVE_with_name("smartmatch_array_elem_test"); |
a4a197da RGS |
4659 | } |
4660 | if (andedresults) | |
4661 | RETPUSHYES; | |
4662 | else | |
4663 | RETPUSHNO; | |
4664 | } | |
4665 | else { | |
41e726ac | 4666 | sm_any_sub: |
d7c0d282 | 4667 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-CodeRef\n")); |
d343c3ef | 4668 | ENTER_with_name("smartmatch_coderef"); |
a4a197da RGS |
4669 | SAVETMPS; |
4670 | PUSHMARK(SP); | |
4671 | PUSHs(d); | |
4672 | PUTBACK; | |
4673 | c = call_sv(e, G_SCALAR); | |
4674 | SPAGAIN; | |
4675 | if (c == 0) | |
4676 | PUSHs(&PL_sv_no); | |
4677 | else if (SvTEMP(TOPs)) | |
4678 | SvREFCNT_inc_void(TOPs); | |
4679 | FREETMPS; | |
d343c3ef | 4680 | LEAVE_with_name("smartmatch_coderef"); |
a4a197da RGS |
4681 | RETURN; |
4682 | } | |
0d863452 | 4683 | } |
b0138e99 | 4684 | /* ~~ %hash */ |
61a621c6 | 4685 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVHV) { |
41e726ac RGS |
4686 | if (object_on_left) { |
4687 | goto sm_any_hash; /* Treat objects like scalars */ | |
4688 | } | |
4689 | else if (!SvOK(d)) { | |
d7c0d282 | 4690 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Hash ($a undef)\n")); |
61a621c6 RGS |
4691 | RETPUSHNO; |
4692 | } | |
4693 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
0d863452 RH |
4694 | /* Check that the key-sets are identical */ |
4695 | HE *he; | |
61a621c6 | 4696 | HV *other_hv = MUTABLE_HV(SvRV(d)); |
6bb3f245 DD |
4697 | bool tied; |
4698 | bool other_tied; | |
0d863452 RH |
4699 | U32 this_key_count = 0, |
4700 | other_key_count = 0; | |
33ed63a2 | 4701 | HV *hv = MUTABLE_HV(SvRV(e)); |
d7c0d282 DM |
4702 | |
4703 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Hash\n")); | |
0d863452 | 4704 | /* Tied hashes don't know how many keys they have. */ |
6bb3f245 DD |
4705 | tied = cBOOL(SvTIED_mg((SV*)hv, PERL_MAGIC_tied)); |
4706 | other_tied = cBOOL(SvTIED_mg((const SV *)other_hv, PERL_MAGIC_tied)); | |
4707 | if (!tied ) { | |
4708 | if(other_tied) { | |
4709 | /* swap HV sides */ | |
4710 | HV * const temp = other_hv; | |
4711 | other_hv = hv; | |
4712 | hv = temp; | |
4713 | tied = TRUE; | |
4714 | other_tied = FALSE; | |
4715 | } | |
4716 | else if(HvUSEDKEYS((const HV *) hv) != HvUSEDKEYS(other_hv)) | |
4717 | RETPUSHNO; | |
0d863452 | 4718 | } |
0d863452 RH |
4719 | |
4720 | /* The hashes have the same number of keys, so it suffices | |
4721 | to check that one is a subset of the other. */ | |
33ed63a2 RGS |
4722 | (void) hv_iterinit(hv); |
4723 | while ( (he = hv_iternext(hv)) ) { | |
b15feb55 | 4724 | SV *key = hv_iterkeysv(he); |
d7c0d282 DM |
4725 | |
4726 | DEBUG_M(Perl_deb(aTHX_ " comparing hash key...\n")); | |
0d863452 RH |
4727 | ++ this_key_count; |
4728 | ||
b15feb55 | 4729 | if(!hv_exists_ent(other_hv, key, 0)) { |
33ed63a2 | 4730 | (void) hv_iterinit(hv); /* reset iterator */ |
0d863452 RH |
4731 | RETPUSHNO; |
4732 | } | |
4733 | } | |
4734 | ||
4735 | if (other_tied) { | |
4736 | (void) hv_iterinit(other_hv); | |
4737 | while ( hv_iternext(other_hv) ) | |
4738 | ++other_key_count; | |
4739 | } | |
4740 | else | |
4741 | other_key_count = HvUSEDKEYS(other_hv); | |
4742 | ||
4743 | if (this_key_count != other_key_count) | |
4744 | RETPUSHNO; | |
4745 | else | |
4746 | RETPUSHYES; | |
4747 | } | |
61a621c6 RGS |
4748 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { |
4749 | AV * const other_av = MUTABLE_AV(SvRV(d)); | |
b9f2b683 | 4750 | const SSize_t other_len = av_tindex(other_av) + 1; |
c70927a6 | 4751 | SSize_t i; |
33ed63a2 | 4752 | HV *hv = MUTABLE_HV(SvRV(e)); |
71b0fb34 | 4753 | |
d7c0d282 | 4754 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Hash\n")); |
71b0fb34 | 4755 | for (i = 0; i < other_len; ++i) { |
c445ea15 | 4756 | SV ** const svp = av_fetch(other_av, i, FALSE); |
d7c0d282 | 4757 | DEBUG_M(Perl_deb(aTHX_ " checking for key existence...\n")); |
71b0fb34 | 4758 | if (svp) { /* ??? When can this not happen? */ |
b15feb55 | 4759 | if (hv_exists_ent(hv, *svp, 0)) |
71b0fb34 DK |
4760 | RETPUSHYES; |
4761 | } | |
0d863452 | 4762 | } |
71b0fb34 | 4763 | RETPUSHNO; |
0d863452 | 4764 | } |
a566f585 | 4765 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) { |
d7c0d282 | 4766 | DEBUG_M(Perl_deb(aTHX_ " applying rule Regex-Hash\n")); |
ea0c2dbd RGS |
4767 | sm_regex_hash: |
4768 | { | |
4769 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(d)); | |
4770 | HE *he; | |
4771 | HV *hv = MUTABLE_HV(SvRV(e)); | |
4772 | ||
4773 | (void) hv_iterinit(hv); | |
4774 | while ( (he = hv_iternext(hv)) ) { | |
d7c0d282 | 4775 | DEBUG_M(Perl_deb(aTHX_ " testing key against pattern...\n")); |
ea0c2dbd RGS |
4776 | if (matcher_matches_sv(matcher, hv_iterkeysv(he))) { |
4777 | (void) hv_iterinit(hv); | |
4778 | destroy_matcher(matcher); | |
4779 | RETPUSHYES; | |
4780 | } | |
0d863452 | 4781 | } |
ea0c2dbd RGS |
4782 | destroy_matcher(matcher); |
4783 | RETPUSHNO; | |
0d863452 | 4784 | } |
0d863452 RH |
4785 | } |
4786 | else { | |
41e726ac | 4787 | sm_any_hash: |
d7c0d282 | 4788 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Hash\n")); |
61a621c6 | 4789 | if (hv_exists_ent(MUTABLE_HV(SvRV(e)), d, 0)) |
0d863452 RH |
4790 | RETPUSHYES; |
4791 | else | |
4792 | RETPUSHNO; | |
4793 | } | |
4794 | } | |
b0138e99 RGS |
4795 | /* ~~ @array */ |
4796 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_PVAV) { | |
41e726ac RGS |
4797 | if (object_on_left) { |
4798 | goto sm_any_array; /* Treat objects like scalars */ | |
4799 | } | |
4800 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { | |
b0138e99 | 4801 | AV * const other_av = MUTABLE_AV(SvRV(e)); |
b9f2b683 | 4802 | const SSize_t other_len = av_tindex(other_av) + 1; |
c70927a6 | 4803 | SSize_t i; |
b0138e99 | 4804 | |
d7c0d282 | 4805 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Array\n")); |
b0138e99 RGS |
4806 | for (i = 0; i < other_len; ++i) { |
4807 | SV ** const svp = av_fetch(other_av, i, FALSE); | |
d7c0d282 DM |
4808 | |
4809 | DEBUG_M(Perl_deb(aTHX_ " testing for key existence...\n")); | |
b0138e99 | 4810 | if (svp) { /* ??? When can this not happen? */ |
b15feb55 | 4811 | if (hv_exists_ent(MUTABLE_HV(SvRV(d)), *svp, 0)) |
b0138e99 RGS |
4812 | RETPUSHYES; |
4813 | } | |
4814 | } | |
4815 | RETPUSHNO; | |
4816 | } | |
4817 | if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4818 | AV *other_av = MUTABLE_AV(SvRV(d)); | |
d7c0d282 | 4819 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Array\n")); |
b9f2b683 | 4820 | if (av_tindex(MUTABLE_AV(SvRV(e))) != av_tindex(other_av)) |
0d863452 RH |
4821 | RETPUSHNO; |
4822 | else { | |
c70927a6 | 4823 | SSize_t i; |
b9f2b683 | 4824 | const SSize_t other_len = av_tindex(other_av); |
0d863452 | 4825 | |
a0714e2c | 4826 | if (NULL == seen_this) { |
0d863452 | 4827 | seen_this = newHV(); |
ad64d0ec | 4828 | (void) sv_2mortal(MUTABLE_SV(seen_this)); |
0d863452 | 4829 | } |
a0714e2c | 4830 | if (NULL == seen_other) { |
6bc991bf | 4831 | seen_other = newHV(); |
ad64d0ec | 4832 | (void) sv_2mortal(MUTABLE_SV(seen_other)); |
0d863452 RH |
4833 | } |
4834 | for(i = 0; i <= other_len; ++i) { | |
b0138e99 | 4835 | SV * const * const this_elem = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); |
c445ea15 AL |
4836 | SV * const * const other_elem = av_fetch(other_av, i, FALSE); |
4837 | ||
0d863452 | 4838 | if (!this_elem || !other_elem) { |
69c3dccf RGS |
4839 | if ((this_elem && SvOK(*this_elem)) |
4840 | || (other_elem && SvOK(*other_elem))) | |
0d863452 RH |
4841 | RETPUSHNO; |
4842 | } | |
365c4e3d RGS |
4843 | else if (hv_exists_ent(seen_this, |
4844 | sv_2mortal(newSViv(PTR2IV(*this_elem))), 0) || | |
4845 | hv_exists_ent(seen_other, | |
4846 | sv_2mortal(newSViv(PTR2IV(*other_elem))), 0)) | |
0d863452 RH |
4847 | { |
4848 | if (*this_elem != *other_elem) | |
4849 | RETPUSHNO; | |
4850 | } | |
4851 | else { | |
04fe65b0 RGS |
4852 | (void)hv_store_ent(seen_this, |
4853 | sv_2mortal(newSViv(PTR2IV(*this_elem))), | |
4854 | &PL_sv_undef, 0); | |
4855 | (void)hv_store_ent(seen_other, | |
4856 | sv_2mortal(newSViv(PTR2IV(*other_elem))), | |
4857 | &PL_sv_undef, 0); | |
0d863452 | 4858 | PUSHs(*other_elem); |
a566f585 | 4859 | PUSHs(*this_elem); |
0d863452 RH |
4860 | |
4861 | PUTBACK; | |
d7c0d282 | 4862 | DEBUG_M(Perl_deb(aTHX_ " recursively comparing array element...\n")); |
be88a5c3 | 4863 | (void) do_smartmatch(seen_this, seen_other, 0); |
0d863452 | 4864 | SPAGAIN; |
d7c0d282 | 4865 | DEBUG_M(Perl_deb(aTHX_ " recursion finished\n")); |
0d863452 RH |
4866 | |
4867 | if (!SvTRUEx(POPs)) | |
4868 | RETPUSHNO; | |
4869 | } | |
4870 | } | |
4871 | RETPUSHYES; | |
4872 | } | |
4873 | } | |
a566f585 | 4874 | else if (SvROK(d) && SvTYPE(SvRV(d)) == SVt_REGEXP) { |
d7c0d282 | 4875 | DEBUG_M(Perl_deb(aTHX_ " applying rule Regex-Array\n")); |
ea0c2dbd RGS |
4876 | sm_regex_array: |
4877 | { | |
4878 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(d)); | |
b9f2b683 | 4879 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
c70927a6 | 4880 | SSize_t i; |
0d863452 | 4881 | |
ea0c2dbd RGS |
4882 | for(i = 0; i <= this_len; ++i) { |
4883 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); | |
d7c0d282 | 4884 | DEBUG_M(Perl_deb(aTHX_ " testing element against pattern...\n")); |
ea0c2dbd RGS |
4885 | if (svp && matcher_matches_sv(matcher, *svp)) { |
4886 | destroy_matcher(matcher); | |
4887 | RETPUSHYES; | |
4888 | } | |
0d863452 | 4889 | } |
ea0c2dbd RGS |
4890 | destroy_matcher(matcher); |
4891 | RETPUSHNO; | |
0d863452 | 4892 | } |
0d863452 | 4893 | } |
015eb7b9 RGS |
4894 | else if (!SvOK(d)) { |
4895 | /* undef ~~ array */ | |
b9f2b683 | 4896 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
c70927a6 | 4897 | SSize_t i; |
0d863452 | 4898 | |
d7c0d282 | 4899 | DEBUG_M(Perl_deb(aTHX_ " applying rule Undef-Array\n")); |
015eb7b9 | 4900 | for (i = 0; i <= this_len; ++i) { |
b0138e99 | 4901 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); |
d7c0d282 | 4902 | DEBUG_M(Perl_deb(aTHX_ " testing for undef element...\n")); |
015eb7b9 | 4903 | if (!svp || !SvOK(*svp)) |
0d863452 RH |
4904 | RETPUSHYES; |
4905 | } | |
4906 | RETPUSHNO; | |
4907 | } | |
015eb7b9 | 4908 | else { |
41e726ac RGS |
4909 | sm_any_array: |
4910 | { | |
c70927a6 | 4911 | SSize_t i; |
b9f2b683 | 4912 | const SSize_t this_len = av_tindex(MUTABLE_AV(SvRV(e))); |
0d863452 | 4913 | |
d7c0d282 | 4914 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Array\n")); |
41e726ac RGS |
4915 | for (i = 0; i <= this_len; ++i) { |
4916 | SV * const * const svp = av_fetch(MUTABLE_AV(SvRV(e)), i, FALSE); | |
4917 | if (!svp) | |
4918 | continue; | |
015eb7b9 | 4919 | |
41e726ac RGS |
4920 | PUSHs(d); |
4921 | PUSHs(*svp); | |
4922 | PUTBACK; | |
4923 | /* infinite recursion isn't supposed to happen here */ | |
d7c0d282 | 4924 | DEBUG_M(Perl_deb(aTHX_ " recursively testing array element...\n")); |
be88a5c3 | 4925 | (void) do_smartmatch(NULL, NULL, 1); |
41e726ac | 4926 | SPAGAIN; |
d7c0d282 | 4927 | DEBUG_M(Perl_deb(aTHX_ " recursion finished\n")); |
41e726ac RGS |
4928 | if (SvTRUEx(POPs)) |
4929 | RETPUSHYES; | |
4930 | } | |
4931 | RETPUSHNO; | |
0d863452 | 4932 | } |
0d863452 RH |
4933 | } |
4934 | } | |
b0138e99 | 4935 | /* ~~ qr// */ |
a566f585 | 4936 | else if (SvROK(e) && SvTYPE(SvRV(e)) == SVt_REGEXP) { |
ea0c2dbd RGS |
4937 | if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVHV) { |
4938 | SV *t = d; d = e; e = t; | |
d7c0d282 | 4939 | DEBUG_M(Perl_deb(aTHX_ " applying rule Hash-Regex\n")); |
ea0c2dbd RGS |
4940 | goto sm_regex_hash; |
4941 | } | |
4942 | else if (!object_on_left && SvROK(d) && SvTYPE(SvRV(d)) == SVt_PVAV) { | |
4943 | SV *t = d; d = e; e = t; | |
d7c0d282 | 4944 | DEBUG_M(Perl_deb(aTHX_ " applying rule Array-Regex\n")); |
ea0c2dbd RGS |
4945 | goto sm_regex_array; |
4946 | } | |
4947 | else { | |
4948 | PMOP * const matcher = make_matcher((REGEXP*) SvRV(e)); | |
0d863452 | 4949 | |
d7c0d282 | 4950 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Regex\n")); |
ea0c2dbd RGS |
4951 | PUTBACK; |
4952 | PUSHs(matcher_matches_sv(matcher, d) | |
4953 | ? &PL_sv_yes | |
4954 | : &PL_sv_no); | |
4955 | destroy_matcher(matcher); | |
4956 | RETURN; | |
4957 | } | |
0d863452 | 4958 | } |
b0138e99 | 4959 | /* ~~ scalar */ |
2c9d2554 RGS |
4960 | /* See if there is overload magic on left */ |
4961 | else if (object_on_left && SvAMAGIC(d)) { | |
4962 | SV *tmpsv; | |
d7c0d282 DM |
4963 | DEBUG_M(Perl_deb(aTHX_ " applying rule Object-Any\n")); |
4964 | DEBUG_M(Perl_deb(aTHX_ " attempting overload\n")); | |
2c9d2554 RGS |
4965 | PUSHs(d); PUSHs(e); |
4966 | PUTBACK; | |
4967 | tmpsv = amagic_call(d, e, smart_amg, AMGf_noright); | |
4968 | if (tmpsv) { | |
4969 | SPAGAIN; | |
4970 | (void)POPs; | |
4971 | SETs(tmpsv); | |
4972 | RETURN; | |
4973 | } | |
4974 | SP -= 2; | |
d7c0d282 | 4975 | DEBUG_M(Perl_deb(aTHX_ " failed to run overload method; falling back...\n")); |
2c9d2554 RGS |
4976 | goto sm_any_scalar; |
4977 | } | |
fb51372e RGS |
4978 | else if (!SvOK(d)) { |
4979 | /* undef ~~ scalar ; we already know that the scalar is SvOK */ | |
d7c0d282 | 4980 | DEBUG_M(Perl_deb(aTHX_ " applying rule undef-Any\n")); |
fb51372e RGS |
4981 | RETPUSHNO; |
4982 | } | |
2c9d2554 RGS |
4983 | else |
4984 | sm_any_scalar: | |
4985 | if (SvNIOK(e) || (SvPOK(e) && looks_like_number(e) && SvNIOK(d))) { | |
d7c0d282 DM |
4986 | DEBUG_M(if (SvNIOK(e)) |
4987 | Perl_deb(aTHX_ " applying rule Any-Num\n"); | |
4988 | else | |
4989 | Perl_deb(aTHX_ " applying rule Num-numish\n"); | |
4990 | ); | |
33ed63a2 | 4991 | /* numeric comparison */ |
0d863452 RH |
4992 | PUSHs(d); PUSHs(e); |
4993 | PUTBACK; | |
a98fe34d | 4994 | if (CopHINTS_get(PL_curcop) & HINT_INTEGER) |
897d3989 | 4995 | (void) Perl_pp_i_eq(aTHX); |
0d863452 | 4996 | else |
897d3989 | 4997 | (void) Perl_pp_eq(aTHX); |
0d863452 RH |
4998 | SPAGAIN; |
4999 | if (SvTRUEx(POPs)) | |
5000 | RETPUSHYES; | |
5001 | else | |
5002 | RETPUSHNO; | |
5003 | } | |
5004 | ||
5005 | /* As a last resort, use string comparison */ | |
d7c0d282 | 5006 | DEBUG_M(Perl_deb(aTHX_ " applying rule Any-Any\n")); |
0d863452 RH |
5007 | PUSHs(d); PUSHs(e); |
5008 | PUTBACK; | |
897d3989 | 5009 | return Perl_pp_seq(aTHX); |
0d863452 RH |
5010 | } |
5011 | ||
5012 | PP(pp_enterwhen) | |
5013 | { | |
5014 | dVAR; dSP; | |
eb578fdb | 5015 | PERL_CONTEXT *cx; |
0d863452 RH |
5016 | const I32 gimme = GIMME_V; |
5017 | ||
5018 | /* This is essentially an optimization: if the match | |
5019 | fails, we don't want to push a context and then | |
5020 | pop it again right away, so we skip straight | |
5021 | to the op that follows the leavewhen. | |
25b991bf | 5022 | RETURNOP calls PUTBACK which restores the stack pointer after the POPs. |
0d863452 RH |
5023 | */ |
5024 | if ((0 == (PL_op->op_flags & OPf_SPECIAL)) && !SvTRUEx(POPs)) | |
25b991bf | 5025 | RETURNOP(cLOGOP->op_other->op_next); |
0d863452 | 5026 | |
c08f093b | 5027 | ENTER_with_name("when"); |
0d863452 RH |
5028 | SAVETMPS; |
5029 | ||
5030 | PUSHBLOCK(cx, CXt_WHEN, SP); | |
5031 | PUSHWHEN(cx); | |
5032 | ||
5033 | RETURN; | |
5034 | } | |
5035 | ||
5036 | PP(pp_leavewhen) | |
5037 | { | |
5038 | dVAR; dSP; | |
c08f093b | 5039 | I32 cxix; |
eb578fdb | 5040 | PERL_CONTEXT *cx; |
c08f093b | 5041 | I32 gimme; |
0d863452 RH |
5042 | SV **newsp; |
5043 | PMOP *newpm; | |
5044 | ||
c08f093b VP |
5045 | cxix = dopoptogiven(cxstack_ix); |
5046 | if (cxix < 0) | |
fc7debfb FC |
5047 | /* diag_listed_as: Can't "when" outside a topicalizer */ |
5048 | DIE(aTHX_ "Can't \"%s\" outside a topicalizer", | |
5049 | PL_op->op_flags & OPf_SPECIAL ? "default" : "when"); | |
c08f093b | 5050 | |
0d863452 RH |
5051 | POPBLOCK(cx,newpm); |
5052 | assert(CxTYPE(cx) == CXt_WHEN); | |
5053 | ||
c08f093b | 5054 | TAINT_NOT; |
2ec7f6f2 FC |
5055 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, |
5056 | SVs_PADTMP|SVs_TEMP, FALSE); | |
0d863452 RH |
5057 | PL_curpm = newpm; /* pop $1 et al */ |
5058 | ||
c08f093b VP |
5059 | LEAVE_with_name("when"); |
5060 | ||
5061 | if (cxix < cxstack_ix) | |
5062 | dounwind(cxix); | |
5063 | ||
5064 | cx = &cxstack[cxix]; | |
5065 | ||
5066 | if (CxFOREACH(cx)) { | |
5067 | /* clear off anything above the scope we're re-entering */ | |
5068 | I32 inner = PL_scopestack_ix; | |
5069 | ||
5070 | TOPBLOCK(cx); | |
5071 | if (PL_scopestack_ix < inner) | |
5072 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
5073 | PL_curcop = cx->blk_oldcop; | |
5074 | ||
47c9d59f | 5075 | PERL_ASYNC_CHECK(); |
c08f093b VP |
5076 | return cx->blk_loop.my_op->op_nextop; |
5077 | } | |
47c9d59f NC |
5078 | else { |
5079 | PERL_ASYNC_CHECK(); | |
b1b5a4ae | 5080 | RETURNOP(cx->blk_givwhen.leave_op); |
47c9d59f | 5081 | } |
0d863452 RH |
5082 | } |
5083 | ||
5084 | PP(pp_continue) | |
5085 | { | |
c08f093b | 5086 | dVAR; dSP; |
0d863452 | 5087 | I32 cxix; |
eb578fdb | 5088 | PERL_CONTEXT *cx; |
c08f093b VP |
5089 | I32 gimme; |
5090 | SV **newsp; | |
5091 | PMOP *newpm; | |
7be5bd17 FR |
5092 | |
5093 | PERL_UNUSED_VAR(gimme); | |
0d863452 RH |
5094 | |
5095 | cxix = dopoptowhen(cxstack_ix); | |
5096 | if (cxix < 0) | |
5097 | DIE(aTHX_ "Can't \"continue\" outside a when block"); | |
c08f093b | 5098 | |
0d863452 RH |
5099 | if (cxix < cxstack_ix) |
5100 | dounwind(cxix); | |
5101 | ||
c08f093b VP |
5102 | POPBLOCK(cx,newpm); |
5103 | assert(CxTYPE(cx) == CXt_WHEN); | |
5104 | ||
5105 | SP = newsp; | |
5106 | PL_curpm = newpm; /* pop $1 et al */ | |
5107 | ||
5108 | LEAVE_with_name("when"); | |
5109 | RETURNOP(cx->blk_givwhen.leave_op->op_next); | |
0d863452 RH |
5110 | } |
5111 | ||
5112 | PP(pp_break) | |
5113 | { | |
5114 | dVAR; | |
5115 | I32 cxix; | |
eb578fdb | 5116 | PERL_CONTEXT *cx; |
25b991bf | 5117 | |
0d863452 | 5118 | cxix = dopoptogiven(cxstack_ix); |
c08f093b VP |
5119 | if (cxix < 0) |
5120 | DIE(aTHX_ "Can't \"break\" outside a given block"); | |
5121 | ||
5122 | cx = &cxstack[cxix]; | |
5123 | if (CxFOREACH(cx)) | |
0d863452 RH |
5124 | DIE(aTHX_ "Can't \"break\" in a loop topicalizer"); |
5125 | ||
5126 | if (cxix < cxstack_ix) | |
5127 | dounwind(cxix); | |
0d863452 | 5128 | |
0787ea8a VP |
5129 | /* Restore the sp at the time we entered the given block */ |
5130 | TOPBLOCK(cx); | |
5131 | ||
c08f093b | 5132 | return cx->blk_givwhen.leave_op; |
0d863452 RH |
5133 | } |
5134 | ||
74e0ddf7 | 5135 | static MAGIC * |
cea2e8a9 | 5136 | S_doparseform(pTHX_ SV *sv) |
a0d0e21e LW |
5137 | { |
5138 | STRLEN len; | |
eb578fdb KW |
5139 | char *s = SvPV(sv, len); |
5140 | char *send; | |
5141 | char *base = NULL; /* start of current field */ | |
5142 | I32 skipspaces = 0; /* number of contiguous spaces seen */ | |
086b26f3 DM |
5143 | bool noblank = FALSE; /* ~ or ~~ seen on this line */ |
5144 | bool repeat = FALSE; /* ~~ seen on this line */ | |
5145 | bool postspace = FALSE; /* a text field may need right padding */ | |
dea28490 | 5146 | U32 *fops; |
eb578fdb | 5147 | U32 *fpc; |
086b26f3 | 5148 | U32 *linepc = NULL; /* position of last FF_LINEMARK */ |
eb578fdb | 5149 | I32 arg; |
086b26f3 DM |
5150 | bool ischop; /* it's a ^ rather than a @ */ |
5151 | bool unchopnum = FALSE; /* at least one @ (i.e. non-chop) num field seen */ | |
a1b95068 | 5152 | int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */ |
3808a683 DM |
5153 | MAGIC *mg = NULL; |
5154 | SV *sv_copy; | |
a0d0e21e | 5155 | |
7918f24d NC |
5156 | PERL_ARGS_ASSERT_DOPARSEFORM; |
5157 | ||
55497cff | 5158 | if (len == 0) |
cea2e8a9 | 5159 | Perl_croak(aTHX_ "Null picture in formline"); |
ac27b0f5 | 5160 | |
3808a683 DM |
5161 | if (SvTYPE(sv) >= SVt_PVMG) { |
5162 | /* This might, of course, still return NULL. */ | |
5163 | mg = mg_find(sv, PERL_MAGIC_fm); | |
5164 | } else { | |
5165 | sv_upgrade(sv, SVt_PVMG); | |
5166 | } | |
5167 | ||
5168 | if (mg) { | |
5169 | /* still the same as previously-compiled string? */ | |
5170 | SV *old = mg->mg_obj; | |
5171 | if ( !(!!SvUTF8(old) ^ !!SvUTF8(sv)) | |
5172 | && len == SvCUR(old) | |
5173 | && strnEQ(SvPVX(old), SvPVX(sv), len) | |
b57b1734 DM |
5174 | ) { |
5175 | DEBUG_f(PerlIO_printf(Perl_debug_log,"Re-using compiled format\n")); | |
3808a683 | 5176 | return mg; |
b57b1734 | 5177 | } |
3808a683 | 5178 | |
b57b1734 | 5179 | DEBUG_f(PerlIO_printf(Perl_debug_log, "Re-compiling format\n")); |
3808a683 DM |
5180 | Safefree(mg->mg_ptr); |
5181 | mg->mg_ptr = NULL; | |
5182 | SvREFCNT_dec(old); | |
5183 | mg->mg_obj = NULL; | |
5184 | } | |
b57b1734 DM |
5185 | else { |
5186 | DEBUG_f(PerlIO_printf(Perl_debug_log, "Compiling format\n")); | |
3808a683 | 5187 | mg = sv_magicext(sv, NULL, PERL_MAGIC_fm, &PL_vtbl_fm, NULL, 0); |
b57b1734 | 5188 | } |
3808a683 DM |
5189 | |
5190 | sv_copy = newSVpvn_utf8(s, len, SvUTF8(sv)); | |
5191 | s = SvPV(sv_copy, len); /* work on the copy, not the original */ | |
5192 | send = s + len; | |
5193 | ||
5194 | ||
815f25c6 DM |
5195 | /* estimate the buffer size needed */ |
5196 | for (base = s; s <= send; s++) { | |
a1b95068 | 5197 | if (*s == '\n' || *s == '@' || *s == '^') |
815f25c6 DM |
5198 | maxops += 10; |
5199 | } | |
5200 | s = base; | |
c445ea15 | 5201 | base = NULL; |
815f25c6 | 5202 | |
a02a5408 | 5203 | Newx(fops, maxops, U32); |
a0d0e21e LW |
5204 | fpc = fops; |
5205 | ||
5206 | if (s < send) { | |
5207 | linepc = fpc; | |
5208 | *fpc++ = FF_LINEMARK; | |
5209 | noblank = repeat = FALSE; | |
5210 | base = s; | |
5211 | } | |
5212 | ||
5213 | while (s <= send) { | |
5214 | switch (*s++) { | |
5215 | default: | |
5216 | skipspaces = 0; | |
5217 | continue; | |
5218 | ||
5219 | case '~': | |
5220 | if (*s == '~') { | |
5221 | repeat = TRUE; | |
b57b1734 DM |
5222 | skipspaces++; |
5223 | s++; | |
a0d0e21e LW |
5224 | } |
5225 | noblank = TRUE; | |
924ba076 | 5226 | /* FALLTHROUGH */ |
a0d0e21e LW |
5227 | case ' ': case '\t': |
5228 | skipspaces++; | |
5229 | continue; | |
a1b95068 WL |
5230 | case 0: |
5231 | if (s < send) { | |
5232 | skipspaces = 0; | |
5233 | continue; | |
5234 | } /* else FALL THROUGH */ | |
5235 | case '\n': | |
a0d0e21e LW |
5236 | arg = s - base; |
5237 | skipspaces++; | |
5238 | arg -= skipspaces; | |
5239 | if (arg) { | |
5f05dabc | 5240 | if (postspace) |
a0d0e21e | 5241 | *fpc++ = FF_SPACE; |
a0d0e21e | 5242 | *fpc++ = FF_LITERAL; |
76912796 | 5243 | *fpc++ = (U32)arg; |
a0d0e21e | 5244 | } |
5f05dabc | 5245 | postspace = FALSE; |
a0d0e21e LW |
5246 | if (s <= send) |
5247 | skipspaces--; | |
5248 | if (skipspaces) { | |
5249 | *fpc++ = FF_SKIP; | |
76912796 | 5250 | *fpc++ = (U32)skipspaces; |
a0d0e21e LW |
5251 | } |
5252 | skipspaces = 0; | |
5253 | if (s <= send) | |
5254 | *fpc++ = FF_NEWLINE; | |
5255 | if (noblank) { | |
5256 | *fpc++ = FF_BLANK; | |
5257 | if (repeat) | |
5258 | arg = fpc - linepc + 1; | |
5259 | else | |
5260 | arg = 0; | |
76912796 | 5261 | *fpc++ = (U32)arg; |
a0d0e21e LW |
5262 | } |
5263 | if (s < send) { | |
5264 | linepc = fpc; | |
5265 | *fpc++ = FF_LINEMARK; | |
5266 | noblank = repeat = FALSE; | |
5267 | base = s; | |
5268 | } | |
5269 | else | |
5270 | s++; | |
5271 | continue; | |
5272 | ||
5273 | case '@': | |
5274 | case '^': | |
5275 | ischop = s[-1] == '^'; | |
5276 | ||
5277 | if (postspace) { | |
5278 | *fpc++ = FF_SPACE; | |
5279 | postspace = FALSE; | |
5280 | } | |
5281 | arg = (s - base) - 1; | |
5282 | if (arg) { | |
5283 | *fpc++ = FF_LITERAL; | |
76912796 | 5284 | *fpc++ = (U32)arg; |
a0d0e21e LW |
5285 | } |
5286 | ||
5287 | base = s - 1; | |
5288 | *fpc++ = FF_FETCH; | |
086b26f3 | 5289 | if (*s == '*') { /* @* or ^* */ |
a0d0e21e | 5290 | s++; |
a1b95068 WL |
5291 | *fpc++ = 2; /* skip the @* or ^* */ |
5292 | if (ischop) { | |
5293 | *fpc++ = FF_LINESNGL; | |
5294 | *fpc++ = FF_CHOP; | |
5295 | } else | |
5296 | *fpc++ = FF_LINEGLOB; | |
a0d0e21e | 5297 | } |
086b26f3 | 5298 | else if (*s == '#' || (*s == '.' && s[1] == '#')) { /* @###, ^### */ |
a701009a | 5299 | arg = ischop ? FORM_NUM_BLANK : 0; |
a0d0e21e LW |
5300 | base = s - 1; |
5301 | while (*s == '#') | |
5302 | s++; | |
5303 | if (*s == '.') { | |
06b5626a | 5304 | const char * const f = ++s; |
a0d0e21e LW |
5305 | while (*s == '#') |
5306 | s++; | |
a701009a | 5307 | arg |= FORM_NUM_POINT + (s - f); |
a0d0e21e LW |
5308 | } |
5309 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5310 | *fpc++ = FF_DECIMAL; | |
76912796 | 5311 | *fpc++ = (U32)arg; |
a1b95068 | 5312 | unchopnum |= ! ischop; |
784707d5 JP |
5313 | } |
5314 | else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */ | |
a701009a | 5315 | arg = ischop ? FORM_NUM_BLANK : 0; |
784707d5 JP |
5316 | base = s - 1; |
5317 | s++; /* skip the '0' first */ | |
5318 | while (*s == '#') | |
5319 | s++; | |
5320 | if (*s == '.') { | |
06b5626a | 5321 | const char * const f = ++s; |
784707d5 JP |
5322 | while (*s == '#') |
5323 | s++; | |
a701009a | 5324 | arg |= FORM_NUM_POINT + (s - f); |
784707d5 JP |
5325 | } |
5326 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5327 | *fpc++ = FF_0DECIMAL; | |
76912796 | 5328 | *fpc++ = (U32)arg; |
a1b95068 | 5329 | unchopnum |= ! ischop; |
a0d0e21e | 5330 | } |
086b26f3 | 5331 | else { /* text field */ |
a0d0e21e LW |
5332 | I32 prespace = 0; |
5333 | bool ismore = FALSE; | |
5334 | ||
5335 | if (*s == '>') { | |
5336 | while (*++s == '>') ; | |
5337 | prespace = FF_SPACE; | |
5338 | } | |
5339 | else if (*s == '|') { | |
5340 | while (*++s == '|') ; | |
5341 | prespace = FF_HALFSPACE; | |
5342 | postspace = TRUE; | |
5343 | } | |
5344 | else { | |
5345 | if (*s == '<') | |
5346 | while (*++s == '<') ; | |
5347 | postspace = TRUE; | |
5348 | } | |
5349 | if (*s == '.' && s[1] == '.' && s[2] == '.') { | |
5350 | s += 3; | |
5351 | ismore = TRUE; | |
5352 | } | |
5353 | *fpc++ = s - base; /* fieldsize for FETCH */ | |
5354 | ||
5355 | *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL; | |
5356 | ||
5357 | if (prespace) | |
76912796 | 5358 | *fpc++ = (U32)prespace; /* add SPACE or HALFSPACE */ |
a0d0e21e LW |
5359 | *fpc++ = FF_ITEM; |
5360 | if (ismore) | |
5361 | *fpc++ = FF_MORE; | |
5362 | if (ischop) | |
5363 | *fpc++ = FF_CHOP; | |
5364 | } | |
5365 | base = s; | |
5366 | skipspaces = 0; | |
5367 | continue; | |
5368 | } | |
5369 | } | |
5370 | *fpc++ = FF_END; | |
5371 | ||
815f25c6 | 5372 | assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */ |
a0d0e21e | 5373 | arg = fpc - fops; |
74e0ddf7 | 5374 | |
3808a683 | 5375 | mg->mg_ptr = (char *) fops; |
74e0ddf7 | 5376 | mg->mg_len = arg * sizeof(U32); |
3808a683 DM |
5377 | mg->mg_obj = sv_copy; |
5378 | mg->mg_flags |= MGf_REFCOUNTED; | |
a1b95068 | 5379 | |
bfed75c6 | 5380 | if (unchopnum && repeat) |
75f63940 | 5381 | Perl_die(aTHX_ "Repeated format line will never terminate (~~ and @#)"); |
74e0ddf7 NC |
5382 | |
5383 | return mg; | |
a1b95068 WL |
5384 | } |
5385 | ||
5386 | ||
5387 | STATIC bool | |
5388 | S_num_overflow(NV value, I32 fldsize, I32 frcsize) | |
5389 | { | |
5390 | /* Can value be printed in fldsize chars, using %*.*f ? */ | |
5391 | NV pwr = 1; | |
5392 | NV eps = 0.5; | |
5393 | bool res = FALSE; | |
5394 | int intsize = fldsize - (value < 0 ? 1 : 0); | |
5395 | ||
a701009a | 5396 | if (frcsize & FORM_NUM_POINT) |
a1b95068 | 5397 | intsize--; |
a701009a | 5398 | frcsize &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
a1b95068 WL |
5399 | intsize -= frcsize; |
5400 | ||
5401 | while (intsize--) pwr *= 10.0; | |
5402 | while (frcsize--) eps /= 10.0; | |
5403 | ||
5404 | if( value >= 0 ){ | |
5405 | if (value + eps >= pwr) | |
5406 | res = TRUE; | |
5407 | } else { | |
5408 | if (value - eps <= -pwr) | |
5409 | res = TRUE; | |
5410 | } | |
5411 | return res; | |
a0d0e21e | 5412 | } |
4e35701f | 5413 | |
bbed91b5 | 5414 | static I32 |
0bd48802 | 5415 | S_run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen) |
bbed91b5 | 5416 | { |
27da23d5 | 5417 | dVAR; |
0bd48802 | 5418 | SV * const datasv = FILTER_DATA(idx); |
504618e9 | 5419 | const int filter_has_file = IoLINES(datasv); |
ad64d0ec NC |
5420 | SV * const filter_state = MUTABLE_SV(IoTOP_GV(datasv)); |
5421 | SV * const filter_sub = MUTABLE_SV(IoBOTTOM_GV(datasv)); | |
941a98a0 | 5422 | int status = 0; |
ec0b63d7 | 5423 | SV *upstream; |
941a98a0 | 5424 | STRLEN got_len; |
162177c1 Z |
5425 | char *got_p = NULL; |
5426 | char *prune_from = NULL; | |
34113e50 | 5427 | bool read_from_cache = FALSE; |
bb7a0f54 | 5428 | STRLEN umaxlen; |
d60d2019 | 5429 | SV *err = NULL; |
bb7a0f54 | 5430 | |
7918f24d NC |
5431 | PERL_ARGS_ASSERT_RUN_USER_FILTER; |
5432 | ||
bb7a0f54 MHM |
5433 | assert(maxlen >= 0); |
5434 | umaxlen = maxlen; | |
5675696b | 5435 | |
bbed91b5 KF |
5436 | /* I was having segfault trouble under Linux 2.2.5 after a |
5437 | parse error occured. (Had to hack around it with a test | |
13765c85 | 5438 | for PL_parser->error_count == 0.) Solaris doesn't segfault -- |
bbed91b5 KF |
5439 | not sure where the trouble is yet. XXX */ |
5440 | ||
4464f08e NC |
5441 | { |
5442 | SV *const cache = datasv; | |
937b367d NC |
5443 | if (SvOK(cache)) { |
5444 | STRLEN cache_len; | |
5445 | const char *cache_p = SvPV(cache, cache_len); | |
941a98a0 NC |
5446 | STRLEN take = 0; |
5447 | ||
bb7a0f54 | 5448 | if (umaxlen) { |
941a98a0 NC |
5449 | /* Running in block mode and we have some cached data already. |
5450 | */ | |
bb7a0f54 | 5451 | if (cache_len >= umaxlen) { |
941a98a0 NC |
5452 | /* In fact, so much data we don't even need to call |
5453 | filter_read. */ | |
bb7a0f54 | 5454 | take = umaxlen; |
941a98a0 NC |
5455 | } |
5456 | } else { | |
10edeb5d JH |
5457 | const char *const first_nl = |
5458 | (const char *)memchr(cache_p, '\n', cache_len); | |
941a98a0 NC |
5459 | if (first_nl) { |
5460 | take = first_nl + 1 - cache_p; | |
5461 | } | |
5462 | } | |
5463 | if (take) { | |
5464 | sv_catpvn(buf_sv, cache_p, take); | |
5465 | sv_chop(cache, cache_p + take); | |
486ec47a | 5466 | /* Definitely not EOF */ |
937b367d NC |
5467 | return 1; |
5468 | } | |
941a98a0 | 5469 | |
937b367d | 5470 | sv_catsv(buf_sv, cache); |
bb7a0f54 MHM |
5471 | if (umaxlen) { |
5472 | umaxlen -= cache_len; | |
941a98a0 | 5473 | } |
937b367d | 5474 | SvOK_off(cache); |
34113e50 | 5475 | read_from_cache = TRUE; |
937b367d NC |
5476 | } |
5477 | } | |
ec0b63d7 | 5478 | |
34113e50 NC |
5479 | /* Filter API says that the filter appends to the contents of the buffer. |
5480 | Usually the buffer is "", so the details don't matter. But if it's not, | |
5481 | then clearly what it contains is already filtered by this filter, so we | |
5482 | don't want to pass it in a second time. | |
5483 | I'm going to use a mortal in case the upstream filter croaks. */ | |
ec0b63d7 NC |
5484 | upstream = ((SvOK(buf_sv) && sv_len(buf_sv)) || SvGMAGICAL(buf_sv)) |
5485 | ? sv_newmortal() : buf_sv; | |
5486 | SvUPGRADE(upstream, SVt_PV); | |
937b367d | 5487 | |
bbed91b5 | 5488 | if (filter_has_file) { |
67e70b33 | 5489 | status = FILTER_READ(idx+1, upstream, 0); |
bbed91b5 KF |
5490 | } |
5491 | ||
34113e50 | 5492 | if (filter_sub && status >= 0) { |
39644a26 | 5493 | dSP; |
bbed91b5 KF |
5494 | int count; |
5495 | ||
d343c3ef | 5496 | ENTER_with_name("call_filter_sub"); |
55b5114f | 5497 | SAVE_DEFSV; |
bbed91b5 KF |
5498 | SAVETMPS; |
5499 | EXTEND(SP, 2); | |
5500 | ||
414bf5ae | 5501 | DEFSV_set(upstream); |
bbed91b5 | 5502 | PUSHMARK(SP); |
6e449a3a | 5503 | mPUSHi(0); |
bbed91b5 KF |
5504 | if (filter_state) { |
5505 | PUSHs(filter_state); | |
5506 | } | |
5507 | PUTBACK; | |
d60d2019 | 5508 | count = call_sv(filter_sub, G_SCALAR|G_EVAL); |
bbed91b5 KF |
5509 | SPAGAIN; |
5510 | ||
5511 | if (count > 0) { | |
5512 | SV *out = POPs; | |
2e8409ad | 5513 | SvGETMAGIC(out); |
bbed91b5 | 5514 | if (SvOK(out)) { |
941a98a0 | 5515 | status = SvIV(out); |
bbed91b5 | 5516 | } |
eed484f9 DD |
5517 | else { |
5518 | SV * const errsv = ERRSV; | |
5519 | if (SvTRUE_NN(errsv)) | |
5520 | err = newSVsv(errsv); | |
d60d2019 | 5521 | } |
bbed91b5 KF |
5522 | } |
5523 | ||
5524 | PUTBACK; | |
5525 | FREETMPS; | |
d343c3ef | 5526 | LEAVE_with_name("call_filter_sub"); |
bbed91b5 KF |
5527 | } |
5528 | ||
536ac391 FC |
5529 | if (SvGMAGICAL(upstream)) { |
5530 | mg_get(upstream); | |
5531 | if (upstream == buf_sv) mg_free(buf_sv); | |
5532 | } | |
b68108d9 | 5533 | if (SvIsCOW(upstream)) sv_force_normal(upstream); |
d60d2019 | 5534 | if(!err && SvOK(upstream)) { |
536ac391 | 5535 | got_p = SvPV_nomg(upstream, got_len); |
bb7a0f54 MHM |
5536 | if (umaxlen) { |
5537 | if (got_len > umaxlen) { | |
5538 | prune_from = got_p + umaxlen; | |
937b367d | 5539 | } |
941a98a0 | 5540 | } else { |
162177c1 | 5541 | char *const first_nl = (char *)memchr(got_p, '\n', got_len); |
941a98a0 NC |
5542 | if (first_nl && first_nl + 1 < got_p + got_len) { |
5543 | /* There's a second line here... */ | |
5544 | prune_from = first_nl + 1; | |
937b367d | 5545 | } |
937b367d NC |
5546 | } |
5547 | } | |
d60d2019 | 5548 | if (!err && prune_from) { |
941a98a0 NC |
5549 | /* Oh. Too long. Stuff some in our cache. */ |
5550 | STRLEN cached_len = got_p + got_len - prune_from; | |
4464f08e | 5551 | SV *const cache = datasv; |
941a98a0 | 5552 | |
4464f08e | 5553 | if (SvOK(cache)) { |
941a98a0 NC |
5554 | /* Cache should be empty. */ |
5555 | assert(!SvCUR(cache)); | |
5556 | } | |
5557 | ||
5558 | sv_setpvn(cache, prune_from, cached_len); | |
5559 | /* If you ask for block mode, you may well split UTF-8 characters. | |
5560 | "If it breaks, you get to keep both parts" | |
5561 | (Your code is broken if you don't put them back together again | |
5562 | before something notices.) */ | |
5563 | if (SvUTF8(upstream)) { | |
5564 | SvUTF8_on(cache); | |
5565 | } | |
00752fe1 FC |
5566 | if (SvPOK(upstream)) SvCUR_set(upstream, got_len - cached_len); |
5567 | else | |
5568 | /* Cannot just use sv_setpvn, as that could free the buffer | |
5569 | before we have a chance to assign it. */ | |
5570 | sv_usepvn(upstream, savepvn(got_p, got_len - cached_len), | |
5571 | got_len - cached_len); | |
162177c1 | 5572 | *prune_from = 0; |
941a98a0 NC |
5573 | /* Can't yet be EOF */ |
5574 | if (status == 0) | |
5575 | status = 1; | |
5576 | } | |
937b367d | 5577 | |
34113e50 NC |
5578 | /* If they are at EOF but buf_sv has something in it, then they may never |
5579 | have touched the SV upstream, so it may be undefined. If we naively | |
5580 | concatenate it then we get a warning about use of uninitialised value. | |
5581 | */ | |
d60d2019 | 5582 | if (!err && upstream != buf_sv && |
dc423e96 | 5583 | SvOK(upstream)) { |
536ac391 | 5584 | sv_catsv_nomg(buf_sv, upstream); |
937b367d | 5585 | } |
ae2c96ed | 5586 | else if (SvOK(upstream)) (void)SvPV_force_nolen(buf_sv); |
937b367d | 5587 | |
941a98a0 | 5588 | if (status <= 0) { |
bbed91b5 | 5589 | IoLINES(datasv) = 0; |
bbed91b5 KF |
5590 | if (filter_state) { |
5591 | SvREFCNT_dec(filter_state); | |
a0714e2c | 5592 | IoTOP_GV(datasv) = NULL; |
bbed91b5 KF |
5593 | } |
5594 | if (filter_sub) { | |
5595 | SvREFCNT_dec(filter_sub); | |
a0714e2c | 5596 | IoBOTTOM_GV(datasv) = NULL; |
bbed91b5 | 5597 | } |
0bd48802 | 5598 | filter_del(S_run_user_filter); |
bbed91b5 | 5599 | } |
d60d2019 JL |
5600 | |
5601 | if (err) | |
5602 | croak_sv(err); | |
5603 | ||
34113e50 NC |
5604 | if (status == 0 && read_from_cache) { |
5605 | /* If we read some data from the cache (and by getting here it implies | |
5606 | that we emptied the cache) then we aren't yet at EOF, and mustn't | |
5607 | report that to our caller. */ | |
5608 | return 1; | |
5609 | } | |
941a98a0 | 5610 | return status; |
bbed91b5 | 5611 | } |
84d4ea48 | 5612 | |
241d1a3b NC |
5613 | /* |
5614 | * Local variables: | |
5615 | * c-indentation-style: bsd | |
5616 | * c-basic-offset: 4 | |
14d04a33 | 5617 | * indent-tabs-mode: nil |
241d1a3b NC |
5618 | * End: |
5619 | * | |
14d04a33 | 5620 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5621 | */ |