Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* cop.h |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
acde74e1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006 by Larry Wall and others |
79072805 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 | * | |
a3985cdc | 9 | * Control ops (cops) are one of the three ops OP_NEXTSTATE, OP_DBSTATE, |
3ffa1527 JH |
10 | * and OP_SETSTATE that (loosely speaking) are separate statements. |
11 | * They hold information important for lexical state and error reporting. | |
12 | * At run time, PL_curcop is set to point to the most recently executed cop, | |
a3985cdc | 13 | * and thus can be used to determine our current state. |
79072805 LW |
14 | */ |
15 | ||
0d2925a6 DM |
16 | /* A jmpenv packages the state required to perform a proper non-local jump. |
17 | * Note that there is a start_env initialized when perl starts, and top_env | |
18 | * points to this initially, so top_env should always be non-null. | |
19 | * | |
20 | * Existence of a non-null top_env->je_prev implies it is valid to call | |
21 | * longjmp() at that runlevel (we make sure start_env.je_prev is always | |
22 | * null to ensure this). | |
23 | * | |
24 | * je_mustcatch, when set at any runlevel to TRUE, means eval ops must | |
25 | * establish a local jmpenv to handle exception traps. Care must be taken | |
26 | * to restore the previous value of je_mustcatch before exiting the | |
27 | * stack frame iff JMPENV_PUSH was not called in that stack frame. | |
28 | * GSAR 97-03-27 | |
29 | */ | |
30 | ||
31 | struct jmpenv { | |
32 | struct jmpenv * je_prev; | |
33 | Sigjmp_buf je_buf; /* only for use if !je_throw */ | |
34 | int je_ret; /* last exception thrown */ | |
35 | bool je_mustcatch; /* need to call longjmp()? */ | |
36 | }; | |
37 | ||
38 | typedef struct jmpenv JMPENV; | |
39 | ||
40 | #ifdef OP_IN_REGISTER | |
41 | #define OP_REG_TO_MEM PL_opsave = op | |
42 | #define OP_MEM_TO_REG op = PL_opsave | |
43 | #else | |
44 | #define OP_REG_TO_MEM NOOP | |
45 | #define OP_MEM_TO_REG NOOP | |
46 | #endif | |
47 | ||
48 | /* | |
49 | * How to build the first jmpenv. | |
50 | * | |
51 | * top_env needs to be non-zero. It points to an area | |
52 | * in which longjmp() stuff is stored, as C callstack | |
53 | * info there at least is thread specific this has to | |
54 | * be per-thread. Otherwise a 'die' in a thread gives | |
55 | * that thread the C stack of last thread to do an eval {}! | |
56 | */ | |
57 | ||
58 | #define JMPENV_BOOTSTRAP \ | |
59 | STMT_START { \ | |
60 | Zero(&PL_start_env, 1, JMPENV); \ | |
61 | PL_start_env.je_ret = -1; \ | |
62 | PL_start_env.je_mustcatch = TRUE; \ | |
63 | PL_top_env = &PL_start_env; \ | |
64 | } STMT_END | |
65 | ||
66 | /* | |
67 | * PERL_FLEXIBLE_EXCEPTIONS | |
68 | * | |
69 | * All the flexible exceptions code has been removed. | |
70 | * See the following threads for details: | |
71 | * | |
72 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2004-07/msg00378.html | |
73 | * | |
74 | * Joshua's original patches (which weren't applied) and discussion: | |
75 | * | |
76 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01396.html | |
77 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01489.html | |
78 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01491.html | |
79 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01608.html | |
80 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02144.html | |
81 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02998.html | |
82 | * | |
83 | * Chip's reworked patch and discussion: | |
84 | * | |
85 | * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1999-03/msg00520.html | |
86 | * | |
87 | * The flaw in these patches (which went unnoticed at the time) was | |
88 | * that they moved some code that could potentially die() out of the | |
89 | * region protected by the setjmp()s. This caused exceptions within | |
90 | * END blocks and such to not be handled by the correct setjmp(). | |
91 | * | |
92 | * The original patches that introduces flexible exceptions were: | |
93 | * | |
94 | * http://public.activestate.com/cgi-bin/perlbrowse?patch=3386 | |
95 | * http://public.activestate.com/cgi-bin/perlbrowse?patch=5162 | |
96 | */ | |
97 | ||
98 | #define dJMPENV JMPENV cur_env | |
99 | ||
100 | #define JMPENV_PUSH(v) \ | |
101 | STMT_START { \ | |
102 | DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \ | |
ca0270c4 | 103 | (void*)&cur_env, (void*)PL_top_env)); \ |
0d2925a6 DM |
104 | cur_env.je_prev = PL_top_env; \ |
105 | OP_REG_TO_MEM; \ | |
106 | cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \ | |
107 | OP_MEM_TO_REG; \ | |
108 | PL_top_env = &cur_env; \ | |
109 | cur_env.je_mustcatch = FALSE; \ | |
110 | (v) = cur_env.je_ret; \ | |
111 | } STMT_END | |
112 | ||
113 | #define JMPENV_POP \ | |
114 | STMT_START { \ | |
115 | DEBUG_l(Perl_deb(aTHX_ "popping jumplevel was %p, now %p\n", \ | |
ca0270c4 | 116 | (void*)PL_top_env, (void*)cur_env.je_prev)); \ |
0d2925a6 DM |
117 | PL_top_env = cur_env.je_prev; \ |
118 | } STMT_END | |
119 | ||
120 | #define JMPENV_JUMP(v) \ | |
121 | STMT_START { \ | |
122 | OP_REG_TO_MEM; \ | |
123 | if (PL_top_env->je_prev) \ | |
124 | PerlProc_longjmp(PL_top_env->je_buf, (v)); \ | |
125 | if ((v) == 2) \ | |
37038d91 | 126 | PerlProc_exit(STATUS_EXIT); \ |
0d2925a6 DM |
127 | PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \ |
128 | PerlProc_exit(1); \ | |
129 | } STMT_END | |
130 | ||
131 | #define CATCH_GET (PL_top_env->je_mustcatch) | |
132 | #define CATCH_SET(v) (PL_top_env->je_mustcatch = (v)) | |
133 | ||
134 | ||
135 | ||
79072805 LW |
136 | struct cop { |
137 | BASEOP | |
a0d0e21e | 138 | char * cop_label; /* label for this construct */ |
57843af0 | 139 | #ifdef USE_ITHREADS |
11faa288 | 140 | char * cop_stashpv; /* package line was compiled in */ |
57843af0 GS |
141 | char * cop_file; /* file name the following line # is from */ |
142 | #else | |
11faa288 | 143 | HV * cop_stash; /* package line was compiled in */ |
79072805 | 144 | GV * cop_filegv; /* file the following line # is from */ |
57843af0 | 145 | #endif |
a0d0e21e | 146 | U32 cop_seq; /* parse sequence number */ |
79072805 | 147 | line_t cop_line; /* line # of this command */ |
72dc9ed5 NC |
148 | /* Beware. mg.c and warnings.pl assume the type of this is STRLEN *: */ |
149 | STRLEN * cop_warnings; /* lexical warnings bitmask */ | |
ac27b0f5 | 150 | SV * cop_io; /* lexical IO defaults */ |
b3ca2e83 NC |
151 | /* compile time state of %^H. See the comment in op.c for how this is |
152 | used to recreate a hash to return from caller. */ | |
153 | struct refcounted_he * cop_hints; | |
79072805 LW |
154 | }; |
155 | ||
57843af0 GS |
156 | #ifdef USE_ITHREADS |
157 | # define CopFILE(c) ((c)->cop_file) | |
158 | # define CopFILEGV(c) (CopFILE(c) \ | |
a0714e2c | 159 | ? gv_fetchfile(CopFILE(c)) : NULL) |
083fcd59 | 160 | |
7e4e8c89 NC |
161 | # ifdef NETWARE |
162 | # define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) | |
163 | # else | |
164 | # define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv)) | |
165 | # endif | |
083fcd59 | 166 | |
57843af0 | 167 | # define CopFILESV(c) (CopFILE(c) \ |
a0714e2c | 168 | ? GvSV(gv_fetchfile(CopFILE(c))) : NULL) |
57843af0 | 169 | # define CopFILEAV(c) (CopFILE(c) \ |
7d49f689 | 170 | ? GvAV(gv_fetchfile(CopFILE(c))) : NULL) |
8688788e SH |
171 | # ifdef DEBUGGING |
172 | # define CopFILEAVx(c) (assert(CopFILE(c)), \ | |
36c7798d | 173 | GvAV(gv_fetchfile(CopFILE(c)))) |
8688788e SH |
174 | # else |
175 | # define CopFILEAVx(c) (GvAV(gv_fetchfile(CopFILE(c)))) | |
176 | # endif | |
57843af0 | 177 | # define CopSTASHPV(c) ((c)->cop_stashpv) |
083fcd59 | 178 | |
7e4e8c89 | 179 | # ifdef NETWARE |
bd61b366 | 180 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : NULL)) |
7e4e8c89 NC |
181 | # else |
182 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv)) | |
183 | # endif | |
083fcd59 | 184 | |
11faa288 | 185 | # define CopSTASH(c) (CopSTASHPV(c) \ |
5c284bb0 | 186 | ? gv_stashpv(CopSTASHPV(c),GV_ADD) : NULL) |
bd61b366 | 187 | # define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME_get(hv) : NULL) |
ed221c57 | 188 | # define CopSTASH_eq(c,hv) ((hv) && stashpv_hvname_match(c,hv)) |
7e4e8c89 NC |
189 | # ifdef NETWARE |
190 | # define CopSTASH_free(c) SAVECOPSTASH_FREE(c) | |
7e4e8c89 NC |
191 | # define CopFILE_free(c) SAVECOPFILE_FREE(c) |
192 | # else | |
ed221c57 | 193 | # define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c)) |
bd61b366 | 194 | # define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = NULL)) |
7e4e8c89 | 195 | # endif |
57843af0 GS |
196 | #else |
197 | # define CopFILEGV(c) ((c)->cop_filegv) | |
f4dd75d9 GS |
198 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
199 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) | |
a0714e2c | 200 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : NULL) |
7d49f689 | 201 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : NULL) |
8688788e SH |
202 | # ifdef DEBUGGING |
203 | # define CopFILEAVx(c) (assert(CopFILEGV(c)), GvAV(CopFILEGV(c))) | |
204 | # else | |
205 | # define CopFILEAVx(c) (GvAV(CopFILEGV(c))) | |
206 | # endif | |
bd61b366 | 207 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : NULL) |
57843af0 | 208 | # define CopSTASH(c) ((c)->cop_stash) |
f4dd75d9 | 209 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
bd61b366 | 210 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME_get(CopSTASH(c)) : NULL) |
f4dd75d9 GS |
211 | /* cop_stash is not refcounted */ |
212 | # define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) | |
213 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) | |
05ec9bb3 | 214 | # define CopSTASH_free(c) |
a0714e2c | 215 | # define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = NULL)) |
05ec9bb3 | 216 | |
57843af0 GS |
217 | #endif /* USE_ITHREADS */ |
218 | ||
ed094faf | 219 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b | 220 | #define CopLINE(c) ((c)->cop_line) |
57843af0 GS |
221 | #define CopLINE_inc(c) (++CopLINE(c)) |
222 | #define CopLINE_dec(c) (--CopLINE(c)) | |
223 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) | |
cc49e20b | 224 | |
248c2a4d CN |
225 | /* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */ |
226 | #ifdef MACOS_TRADITIONAL | |
227 | # define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c)) | |
228 | #else | |
229 | # define OutCopFILE(c) CopFILE(c) | |
230 | #endif | |
231 | ||
7b0bddfa NC |
232 | /* If $[ is non-zero, it's stored in cop_hints under the key "$[", and |
233 | HINT_ARYBASE is set to indicate this. | |
234 | Setting it is ineficient due to the need to create 2 mortal SVs, but as | |
235 | using $[ is highly discouraged, no sane Perl code will be using it. */ | |
236 | #define CopARYBASE_get(c) \ | |
237 | ((CopHINTS_get(c) & HINT_ARYBASE) \ | |
238 | ? SvIV(Perl_refcounted_he_fetch(aTHX_ (c)->cop_hints, 0, "$[", 2, 0, \ | |
239 | 0)) \ | |
240 | : 0) | |
241 | #define CopARYBASE_set(c, b) STMT_START { \ | |
242 | if (b || ((c)->op_private & HINT_ARYBASE)) { \ | |
243 | (c)->op_private |= HINT_ARYBASE; \ | |
244 | if ((c) == &PL_compiling) \ | |
245 | PL_hints |= HINT_LOCALIZE_HH | HINT_ARYBASE; \ | |
246 | (c)->cop_hints \ | |
247 | = Perl_refcounted_he_new(aTHX_ (c)->cop_hints, \ | |
248 | sv_2mortal(newSVpvs("$[")), \ | |
249 | sv_2mortal(newSViv(b))); \ | |
250 | } \ | |
251 | } STMT_END | |
fc15ae8f | 252 | |
623e6609 NC |
253 | /* FIXME NATIVE_HINTS if this is changed from op_private (see perl.h) */ |
254 | #define CopHINTS_get(c) ((c)->op_private + 0) | |
255 | #define CopHINTS_set(c, h) STMT_START { \ | |
256 | (c)->op_private \ | |
257 | = (U8)((h) & HINT_PRIVATE_MASK); \ | |
258 | } STMT_END | |
259 | ||
79072805 LW |
260 | /* |
261 | * Here we have some enormously heavy (or at least ponderous) wizardry. | |
262 | */ | |
263 | ||
264 | /* subroutine context */ | |
265 | struct block_sub { | |
266 | CV * cv; | |
267 | GV * gv; | |
463ee0b2 | 268 | GV * dfoutgv; |
79072805 LW |
269 | AV * savearray; |
270 | AV * argarray; | |
bb172083 | 271 | I32 olddepth; |
79072805 | 272 | U8 hasargs; |
cd06dffe | 273 | U8 lval; /* XXX merge lval and hasargs? */ |
f3548bdc | 274 | PAD *oldcomppad; |
f39bc417 | 275 | OP * retop; /* op to execute on exit from sub */ |
79072805 LW |
276 | }; |
277 | ||
b36bdeca DM |
278 | /* base for the next two macros. Don't use directly. |
279 | * Note that the refcnt of the cv is incremented twice; The CX one is | |
280 | * decremented by LEAVESUB, the other by LEAVE. */ | |
281 | ||
ee98a1d6 | 282 | #define PUSHSUB_BASE(cx) \ |
79072805 | 283 | cx->blk_sub.cv = cv; \ |
b8f55b69 | 284 | cx->blk_sub.olddepth = CvDEPTH(cv); \ |
b36bdeca | 285 | cx->blk_sub.hasargs = hasargs; \ |
5f66b61c | 286 | cx->blk_sub.retop = NULL; \ |
b36bdeca | 287 | if (!CvDEPTH(cv)) { \ |
74c765eb AL |
288 | SvREFCNT_inc_simple_void_NN(cv); \ |
289 | SvREFCNT_inc_simple_void_NN(cv); \ | |
b36bdeca DM |
290 | SAVEFREESV(cv); \ |
291 | } | |
292 | ||
ee98a1d6 DM |
293 | |
294 | #define PUSHSUB(cx) \ | |
295 | PUSHSUB_BASE(cx) \ | |
cd06dffe GS |
296 | cx->blk_sub.lval = PL_op->op_private & \ |
297 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); | |
79072805 | 298 | |
ee98a1d6 DM |
299 | /* variant for use by OP_DBSTATE, where op_private holds hint bits */ |
300 | #define PUSHSUB_DB(cx) \ | |
301 | PUSHSUB_BASE(cx) \ | |
302 | cx->blk_sub.lval = 0; | |
303 | ||
304 | ||
79072805 LW |
305 | #define PUSHFORMAT(cx) \ |
306 | cx->blk_sub.cv = cv; \ | |
307 | cx->blk_sub.gv = gv; \ | |
5f66b61c | 308 | cx->blk_sub.retop = NULL; \ |
4633a7c4 | 309 | cx->blk_sub.hasargs = 0; \ |
3280af22 | 310 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
b37c2d43 | 311 | SvREFCNT_inc_void(cx->blk_sub.dfoutgv) |
79072805 | 312 | |
3db8f154 | 313 | #define POP_SAVEARRAY() \ |
6d4ff0d2 | 314 | STMT_START { \ |
3280af22 | 315 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
a8bba7fa | 316 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
6d4ff0d2 | 317 | } STMT_END |
6d4ff0d2 | 318 | |
ecf8e9dd | 319 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b GS |
320 | * leave any (a fast av_clear(ary), basically) */ |
321 | #define CLEAR_ARGARRAY(ary) \ | |
322 | STMT_START { \ | |
323 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ | |
f880fe2f | 324 | SvPV_set(ary, (char*)AvALLOC(ary)); \ |
8e09340b GS |
325 | AvFILLp(ary) = -1; \ |
326 | } STMT_END | |
7766f137 | 327 | |
b0d9ce38 GS |
328 | #define POPSUB(cx,sv) \ |
329 | STMT_START { \ | |
a8bba7fa | 330 | if (cx->blk_sub.hasargs) { \ |
7766f137 | 331 | POP_SAVEARRAY(); \ |
d8b46c1b | 332 | /* abandon @_ if it got reified */ \ |
a8bba7fa GS |
333 | if (AvREAL(cx->blk_sub.argarray)) { \ |
334 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ | |
335 | SvREFCNT_dec(cx->blk_sub.argarray); \ | |
336 | cx->blk_sub.argarray = newAV(); \ | |
337 | av_extend(cx->blk_sub.argarray, fill); \ | |
11ca45c0 | 338 | AvREIFY_only(cx->blk_sub.argarray); \ |
dd2155a4 | 339 | CX_CURPAD_SV(cx->blk_sub, 0) = (SV*)cx->blk_sub.argarray; \ |
d8b46c1b | 340 | } \ |
7766f137 | 341 | else { \ |
8e09340b | 342 | CLEAR_ARGARRAY(cx->blk_sub.argarray); \ |
7766f137 | 343 | } \ |
79072805 | 344 | } \ |
b0d9ce38 GS |
345 | sv = (SV*)cx->blk_sub.cv; \ |
346 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ | |
a0714e2c | 347 | sv = NULL; \ |
b0d9ce38 GS |
348 | } STMT_END |
349 | ||
350 | #define LEAVESUB(sv) \ | |
351 | STMT_START { \ | |
352 | if (sv) \ | |
353 | SvREFCNT_dec(sv); \ | |
354 | } STMT_END | |
79072805 LW |
355 | |
356 | #define POPFORMAT(cx) \ | |
4633a7c4 LW |
357 | setdefout(cx->blk_sub.dfoutgv); \ |
358 | SvREFCNT_dec(cx->blk_sub.dfoutgv); | |
79072805 LW |
359 | |
360 | /* eval context */ | |
361 | struct block_eval { | |
362 | I32 old_in_eval; | |
363 | I32 old_op_type; | |
0f79a09d | 364 | SV * old_namesv; |
79072805 | 365 | OP * old_eval_root; |
748a9306 | 366 | SV * cur_text; |
2090ab20 | 367 | CV * cv; |
f39bc417 | 368 | OP * retop; /* op to execute on exit from eval */ |
abd70938 | 369 | JMPENV * cur_top_env; /* value of PL_top_env when eval CX created */ |
79072805 LW |
370 | }; |
371 | ||
8990e307 | 372 | #define PUSHEVAL(cx,n,fgv) \ |
0f79a09d | 373 | STMT_START { \ |
3280af22 | 374 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
a8bba7fa | 375 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
a0714e2c | 376 | cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : NULL); \ |
a8bba7fa | 377 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
0f79a09d | 378 | cx->blk_eval.cur_text = PL_linestr; \ |
601f1833 | 379 | cx->blk_eval.cv = NULL; /* set by doeval(), as applicable */ \ |
5f66b61c | 380 | cx->blk_eval.retop = NULL; \ |
abd70938 | 381 | cx->blk_eval.cur_top_env = PL_top_env; \ |
0f79a09d | 382 | } STMT_END |
79072805 LW |
383 | |
384 | #define POPEVAL(cx) \ | |
0f79a09d | 385 | STMT_START { \ |
3280af22 | 386 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
79072805 | 387 | optype = cx->blk_eval.old_op_type; \ |
7766f137 | 388 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
0f79a09d GS |
389 | if (cx->blk_eval.old_namesv) \ |
390 | sv_2mortal(cx->blk_eval.old_namesv); \ | |
391 | } STMT_END | |
79072805 LW |
392 | |
393 | /* loop context */ | |
394 | struct block_loop { | |
395 | char * label; | |
396 | I32 resetsp; | |
397 | OP * redo_op; | |
398 | OP * next_op; | |
399 | OP * last_op; | |
7766f137 GS |
400 | #ifdef USE_ITHREADS |
401 | void * iterdata; | |
f3548bdc | 402 | PAD *oldcomppad; |
7766f137 | 403 | #else |
79072805 | 404 | SV ** itervar; |
7766f137 | 405 | #endif |
79072805 | 406 | SV * itersave; |
5f05dabc | 407 | SV * iterlval; |
79072805 | 408 | AV * iterary; |
89ea2908 GA |
409 | IV iterix; |
410 | IV itermax; | |
79072805 LW |
411 | }; |
412 | ||
7766f137 GS |
413 | #ifdef USE_ITHREADS |
414 | # define CxITERVAR(c) \ | |
415 | ((c)->blk_loop.iterdata \ | |
416 | ? (CxPADLOOP(cx) \ | |
dd2155a4 DM |
417 | ? &CX_CURPAD_SV( (c)->blk_loop, \ |
418 | INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)) \ | |
7766f137 GS |
419 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
420 | : (SV**)NULL) | |
421 | # define CX_ITERDATA_SET(cx,idata) \ | |
dd2155a4 | 422 | CX_CURPAD_SAVE(cx->blk_loop); \ |
155aba94 | 423 | if ((cx->blk_loop.iterdata = (idata))) \ |
d10edb75 KC |
424 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
425 | else \ | |
a0714e2c | 426 | cx->blk_loop.itersave = NULL; |
7766f137 GS |
427 | #else |
428 | # define CxITERVAR(c) ((c)->blk_loop.itervar) | |
429 | # define CX_ITERDATA_SET(cx,ivar) \ | |
155aba94 | 430 | if ((cx->blk_loop.itervar = (SV**)(ivar))) \ |
d10edb75 KC |
431 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
432 | else \ | |
a0714e2c | 433 | cx->blk_loop.itersave = NULL; |
7766f137 GS |
434 | #endif |
435 | ||
436 | #define PUSHLOOP(cx, dat, s) \ | |
38a230cb GS |
437 | cx->blk_loop.label = PL_curcop->cop_label; \ |
438 | cx->blk_loop.resetsp = s - PL_stack_base; \ | |
79072805 LW |
439 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
440 | cx->blk_loop.next_op = cLOOP->op_nextop; \ | |
441 | cx->blk_loop.last_op = cLOOP->op_lastop; \ | |
a0714e2c | 442 | cx->blk_loop.iterlval = NULL; \ |
7d49f689 | 443 | cx->blk_loop.iterary = NULL; \ |
7766f137 GS |
444 | cx->blk_loop.iterix = -1; \ |
445 | CX_ITERDATA_SET(cx,dat); | |
79072805 LW |
446 | |
447 | #define POPLOOP(cx) \ | |
a8bba7fa | 448 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
7766f137 | 449 | if (CxITERVAR(cx)) { \ |
21401c75 | 450 | if (SvPADMY(cx->blk_loop.itersave)) { \ |
d4c19fe8 | 451 | SV ** const s_v_p = CxITERVAR(cx); \ |
21401c75 CH |
452 | sv_2mortal(*s_v_p); \ |
453 | *s_v_p = cx->blk_loop.itersave; \ | |
454 | } \ | |
455 | else { \ | |
456 | SvREFCNT_dec(cx->blk_loop.itersave); \ | |
457 | } \ | |
44a8e56a | 458 | } \ |
a8bba7fa GS |
459 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
460 | SvREFCNT_dec(cx->blk_loop.iterary); | |
79072805 | 461 | |
0d863452 RH |
462 | /* given/when context */ |
463 | struct block_givwhen { | |
464 | OP *leave_op; | |
465 | }; | |
466 | ||
467 | #define PUSHGIVEN(cx) \ | |
468 | cx->blk_givwhen.leave_op = cLOGOP->op_other; | |
469 | ||
470 | #define PUSHWHEN PUSHGIVEN | |
471 | ||
79072805 LW |
472 | /* context common to subroutines, evals and loops */ |
473 | struct block { | |
474 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ | |
475 | COP * blku_oldcop; /* old curcop pointer */ | |
79072805 LW |
476 | I32 blku_oldmarksp; /* mark stack index */ |
477 | I32 blku_oldscopesp; /* scope stack index */ | |
478 | PMOP * blku_oldpm; /* values of pattern match vars */ | |
479 | U8 blku_gimme; /* is this block running in list context? */ | |
480 | ||
481 | union { | |
482 | struct block_sub blku_sub; | |
483 | struct block_eval blku_eval; | |
484 | struct block_loop blku_loop; | |
0d863452 | 485 | struct block_givwhen blku_givwhen; |
79072805 LW |
486 | } blk_u; |
487 | }; | |
488 | #define blk_oldsp cx_u.cx_blk.blku_oldsp | |
489 | #define blk_oldcop cx_u.cx_blk.blku_oldcop | |
79072805 LW |
490 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp |
491 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp | |
492 | #define blk_oldpm cx_u.cx_blk.blku_oldpm | |
493 | #define blk_gimme cx_u.cx_blk.blku_gimme | |
494 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub | |
495 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval | |
496 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop | |
0d863452 | 497 | #define blk_givwhen cx_u.cx_blk.blk_u.blku_givwhen |
79072805 LW |
498 | |
499 | /* Enter a block. */ | |
8990e307 | 500 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 | 501 | cx->cx_type = t, \ |
3280af22 NIS |
502 | cx->blk_oldsp = sp - PL_stack_base, \ |
503 | cx->blk_oldcop = PL_curcop, \ | |
1aff0e91 | 504 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 | 505 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
3280af22 | 506 | cx->blk_oldpm = PL_curpm, \ |
eb160463 | 507 | cx->blk_gimme = (U8)gimme; \ |
bf49b057 | 508 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 | 509 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
510 | |
511 | /* Exit a block (RETURN and LAST). */ | |
a0d0e21e | 512 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 | 513 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
514 | PL_curcop = cx->blk_oldcop, \ |
515 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ | |
516 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
3280af22 NIS |
517 | pm = cx->blk_oldpm, \ |
518 | gimme = cx->blk_gimme; \ | |
b4ab917c | 519 | DEBUG_SCOPE("POPBLOCK"); \ |
bf49b057 | 520 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c | 521 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
522 | |
523 | /* Continue a block elsewhere (NEXT and REDO). */ | |
3280af22 | 524 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 | 525 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
526 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
527 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
b4ab917c DM |
528 | PL_curpm = cx->blk_oldpm; \ |
529 | DEBUG_SCOPE("TOPBLOCK"); | |
79072805 LW |
530 | |
531 | /* substitution context */ | |
532 | struct subst { | |
533 | I32 sbu_iters; | |
534 | I32 sbu_maxiters; | |
22e551b9 | 535 | I32 sbu_rflags; |
4633a7c4 | 536 | I32 sbu_oldsave; |
71be2cbc | 537 | bool sbu_once; |
538 | bool sbu_rxtainted; | |
79072805 LW |
539 | char * sbu_orig; |
540 | SV * sbu_dstr; | |
541 | SV * sbu_targ; | |
542 | char * sbu_s; | |
543 | char * sbu_m; | |
544 | char * sbu_strend; | |
c90c0ff4 | 545 | void * sbu_rxres; |
c07a80fd | 546 | REGEXP * sbu_rx; |
79072805 LW |
547 | }; |
548 | #define sb_iters cx_u.cx_subst.sbu_iters | |
549 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters | |
22e551b9 | 550 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 | 551 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc | 552 | #define sb_once cx_u.cx_subst.sbu_once |
553 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted | |
79072805 LW |
554 | #define sb_orig cx_u.cx_subst.sbu_orig |
555 | #define sb_dstr cx_u.cx_subst.sbu_dstr | |
556 | #define sb_targ cx_u.cx_subst.sbu_targ | |
557 | #define sb_s cx_u.cx_subst.sbu_s | |
558 | #define sb_m cx_u.cx_subst.sbu_m | |
559 | #define sb_strend cx_u.cx_subst.sbu_strend | |
c90c0ff4 | 560 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd | 561 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 LW |
562 | |
563 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ | |
564 | cx->sb_iters = iters, \ | |
565 | cx->sb_maxiters = maxiters, \ | |
22e551b9 | 566 | cx->sb_rflags = r_flags, \ |
4633a7c4 | 567 | cx->sb_oldsave = oldsave, \ |
71be2cbc | 568 | cx->sb_once = once, \ |
569 | cx->sb_rxtainted = rxtainted, \ | |
79072805 LW |
570 | cx->sb_orig = orig, \ |
571 | cx->sb_dstr = dstr, \ | |
572 | cx->sb_targ = targ, \ | |
573 | cx->sb_s = s, \ | |
574 | cx->sb_m = m, \ | |
575 | cx->sb_strend = strend, \ | |
4608196e | 576 | cx->sb_rxres = NULL, \ |
c07a80fd | 577 | cx->sb_rx = rx, \ |
c90c0ff4 | 578 | cx->cx_type = CXt_SUBST; \ |
579 | rxres_save(&cx->sb_rxres, rx) | |
79072805 | 580 | |
c90c0ff4 | 581 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
582 | rxres_free(&cx->sb_rxres) | |
79072805 LW |
583 | |
584 | struct context { | |
6b35e009 | 585 | U32 cx_type; /* what kind of context this is */ |
79072805 LW |
586 | union { |
587 | struct block cx_blk; | |
588 | struct subst cx_subst; | |
589 | } cx_u; | |
590 | }; | |
6b35e009 GS |
591 | |
592 | #define CXTYPEMASK 0xff | |
79072805 LW |
593 | #define CXt_NULL 0 |
594 | #define CXt_SUB 1 | |
595 | #define CXt_EVAL 2 | |
596 | #define CXt_LOOP 3 | |
597 | #define CXt_SUBST 4 | |
598 | #define CXt_BLOCK 5 | |
7766f137 | 599 | #define CXt_FORMAT 6 |
0d863452 RH |
600 | #define CXt_GIVEN 7 |
601 | #define CXt_WHEN 8 | |
79072805 | 602 | |
9850bf21 RH |
603 | /* private flags for CXt_SUB and CXt_NULL */ |
604 | #define CXp_MULTICALL 0x00000400 /* part of a multicall (so don't | |
605 | tear down context on exit). */ | |
606 | ||
6b35e009 GS |
607 | /* private flags for CXt_EVAL */ |
608 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ | |
1d76a5c3 | 609 | #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ |
6b35e009 | 610 | |
7766f137 | 611 | /* private flags for CXt_LOOP */ |
0d863452 RH |
612 | #define CXp_FOREACH 0x00000200 /* a foreach loop */ |
613 | #define CXp_FOR_DEF 0x00000400 /* foreach using $_ */ | |
614 | #ifdef USE_ITHREADS | |
7766f137 GS |
615 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata |
616 | has pad offset; if not set, | |
617 | iterdata holds GV* */ | |
618 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ | |
619 | == (CXt_LOOP|CXp_PADVAR)) | |
620 | #endif | |
621 | ||
6b35e009 | 622 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
9850bf21 RH |
623 | #define CxMULTICALL(c) (((c)->cx_type & CXp_MULTICALL) \ |
624 | == CXp_MULTICALL) | |
7766f137 GS |
625 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
626 | == (CXt_EVAL|CXp_REAL)) | |
1d76a5c3 GS |
627 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ |
628 | == (CXt_EVAL|CXp_TRYBLOCK)) | |
0d863452 RH |
629 | #define CxFOREACH(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH)) \ |
630 | == (CXt_LOOP|CXp_FOREACH)) | |
631 | #define CxFOREACHDEF(c) (((c)->cx_type & (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF))\ | |
632 | == (CXt_LOOP|CXp_FOREACH|CXp_FOR_DEF)) | |
6b35e009 | 633 | |
79072805 LW |
634 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
635 | ||
ccfc67b7 JH |
636 | /* |
637 | =head1 "Gimme" Values | |
638 | */ | |
954c1994 GS |
639 | |
640 | /* | |
641 | =for apidoc AmU||G_SCALAR | |
642 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
643 | L<perlcall>. | |
644 | ||
645 | =for apidoc AmU||G_ARRAY | |
91e74348 | 646 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 GS |
647 | L<perlcall>. |
648 | ||
649 | =for apidoc AmU||G_VOID | |
650 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
651 | ||
652 | =for apidoc AmU||G_DISCARD | |
653 | Indicates that arguments returned from a callback should be discarded. See | |
654 | L<perlcall>. | |
655 | ||
656 | =for apidoc AmU||G_EVAL | |
657 | ||
658 | Used to force a Perl C<eval> wrapper around a callback. See | |
659 | L<perlcall>. | |
660 | ||
661 | =for apidoc AmU||G_NOARGS | |
662 | ||
663 | Indicates that no arguments are being sent to a callback. See | |
664 | L<perlcall>. | |
665 | ||
666 | =cut | |
667 | */ | |
668 | ||
a0d0e21e LW |
669 | #define G_SCALAR 0 |
670 | #define G_ARRAY 1 | |
54310121 | 671 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 | 672 | |
864dbfa3 | 673 | /* extra flags for Perl_call_* routines */ |
a0d0e21e LW |
674 | #define G_DISCARD 2 /* Call FREETMPS. */ |
675 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ | |
676 | #define G_NOARGS 8 /* Don't construct a @_ array. */ | |
54310121 | 677 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 | 678 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
968b3946 | 679 | #define G_METHOD 64 /* Calling method. */ |
edb2152a NC |
680 | #define G_FAKINGEVAL 256 /* Faking en eval context for call_sv or |
681 | fold_constants. */ | |
e336de0d | 682 | |
faef0170 HS |
683 | /* flag bits for PL_in_eval */ |
684 | #define EVAL_NULL 0 /* not in an eval */ | |
685 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ | |
686 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ | |
864dbfa3 | 687 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 | 688 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
faef0170 | 689 | |
e336de0d GS |
690 | /* Support for switching (stack and block) contexts. |
691 | * This ensures magic doesn't invalidate local stack and cx pointers. | |
692 | */ | |
693 | ||
e788e7d3 GS |
694 | #define PERLSI_UNKNOWN -1 |
695 | #define PERLSI_UNDEF 0 | |
696 | #define PERLSI_MAIN 1 | |
697 | #define PERLSI_MAGIC 2 | |
698 | #define PERLSI_SORT 3 | |
699 | #define PERLSI_SIGNAL 4 | |
700 | #define PERLSI_OVERLOAD 5 | |
701 | #define PERLSI_DESTROY 6 | |
702 | #define PERLSI_WARNHOOK 7 | |
703 | #define PERLSI_DIEHOOK 8 | |
704 | #define PERLSI_REQUIRE 9 | |
e336de0d GS |
705 | |
706 | struct stackinfo { | |
707 | AV * si_stack; /* stack for current runlevel */ | |
708 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ | |
709 | I32 si_cxix; /* current context index */ | |
710 | I32 si_cxmax; /* maximum allocated index */ | |
711 | I32 si_type; /* type of runlevel */ | |
712 | struct stackinfo * si_prev; | |
713 | struct stackinfo * si_next; | |
ce2f7c3b | 714 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d GS |
715 | * currently used only with DEBUGGING, |
716 | * but not #ifdef-ed for bincompat */ | |
717 | }; | |
718 | ||
719 | typedef struct stackinfo PERL_SI; | |
720 | ||
3280af22 NIS |
721 | #define cxstack (PL_curstackinfo->si_cxstack) |
722 | #define cxstack_ix (PL_curstackinfo->si_cxix) | |
723 | #define cxstack_max (PL_curstackinfo->si_cxmax) | |
e336de0d GS |
724 | |
725 | #ifdef DEBUGGING | |
ce2f7c3b GS |
726 | # define SET_MARK_OFFSET \ |
727 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack | |
e336de0d | 728 | #else |
ce2f7c3b | 729 | # define SET_MARK_OFFSET NOOP |
e336de0d GS |
730 | #endif |
731 | ||
d3acc0f7 | 732 | #define PUSHSTACKi(type) \ |
e336de0d | 733 | STMT_START { \ |
3280af22 | 734 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d GS |
735 | if (!next) { \ |
736 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ | |
3280af22 NIS |
737 | next->si_prev = PL_curstackinfo; \ |
738 | PL_curstackinfo->si_next = next; \ | |
e336de0d GS |
739 | } \ |
740 | next->si_type = type; \ | |
741 | next->si_cxix = -1; \ | |
742 | AvFILLp(next->si_stack) = 0; \ | |
3280af22 NIS |
743 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
744 | PL_curstackinfo = next; \ | |
ce2f7c3b | 745 | SET_MARK_OFFSET; \ |
e336de0d GS |
746 | } STMT_END |
747 | ||
e788e7d3 | 748 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 | 749 | |
3095d977 GS |
750 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
751 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ | |
d3acc0f7 | 752 | #define POPSTACK \ |
e336de0d | 753 | STMT_START { \ |
39644a26 | 754 | dSP; \ |
c4420975 | 755 | PERL_SI * const prev = PL_curstackinfo->si_prev; \ |
e336de0d | 756 | if (!prev) { \ |
bf49b057 | 757 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d GS |
758 | my_exit(1); \ |
759 | } \ | |
3280af22 | 760 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d | 761 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 | 762 | PL_curstackinfo = prev; \ |
e336de0d GS |
763 | } STMT_END |
764 | ||
765 | #define POPSTACK_TO(s) \ | |
766 | STMT_START { \ | |
3280af22 | 767 | while (PL_curstack != s) { \ |
bac4b2ad | 768 | dounwind(-1); \ |
d3acc0f7 | 769 | POPSTACK; \ |
bac4b2ad | 770 | } \ |
e336de0d | 771 | } STMT_END |
923e4eb5 JH |
772 | |
773 | #define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling) | |
774 | #define IN_PERL_RUNTIME (PL_curcop != &PL_compiling) | |
775 | ||
9850bf21 RH |
776 | /* |
777 | =head1 Multicall Functions | |
778 | ||
779 | =for apidoc Ams||dMULTICALL | |
780 | Declare local variables for a multicall. See L<perlcall/Lightweight Callbacks>. | |
781 | ||
782 | =for apidoc Ams||PUSH_MULTICALL | |
783 | Opening bracket for a lightweight callback. | |
784 | See L<perlcall/Lightweight Callbacks>. | |
785 | ||
786 | =for apidoc Ams||MULTICALL | |
787 | Make a lightweight callback. See L<perlcall/Lightweight Callbacks>. | |
788 | ||
789 | =for apidoc Ams||POP_MULTICALL | |
790 | Closing bracket for a lightweight callback. | |
791 | See L<perlcall/Lightweight Callbacks>. | |
792 | ||
793 | =cut | |
794 | */ | |
795 | ||
796 | #define dMULTICALL \ | |
797 | SV **newsp; /* set by POPBLOCK */ \ | |
798 | PERL_CONTEXT *cx; \ | |
82f35e8b | 799 | CV *multicall_cv; \ |
9850bf21 RH |
800 | OP *multicall_cop; \ |
801 | bool multicall_oldcatch; \ | |
802 | U8 hasargs = 0 /* used by PUSHSUB */ | |
803 | ||
82f35e8b | 804 | #define PUSH_MULTICALL(the_cv) \ |
9850bf21 | 805 | STMT_START { \ |
0bcc34c2 AL |
806 | CV * const _nOnclAshIngNamE_ = the_cv; \ |
807 | CV * const cv = _nOnclAshIngNamE_; \ | |
808 | AV * const padlist = CvPADLIST(cv); \ | |
9850bf21 RH |
809 | ENTER; \ |
810 | multicall_oldcatch = CATCH_GET; \ | |
811 | SAVETMPS; SAVEVPTR(PL_op); \ | |
812 | CATCH_SET(TRUE); \ | |
813 | PUSHBLOCK(cx, CXt_SUB|CXp_MULTICALL, PL_stack_sp); \ | |
814 | PUSHSUB(cx); \ | |
815 | if (++CvDEPTH(cv) >= 2) { \ | |
816 | PERL_STACK_OVERFLOW_CHECK(); \ | |
817 | Perl_pad_push(aTHX_ padlist, CvDEPTH(cv)); \ | |
818 | } \ | |
819 | SAVECOMPPAD(); \ | |
820 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); \ | |
82f35e8b | 821 | multicall_cv = cv; \ |
9850bf21 RH |
822 | multicall_cop = CvSTART(cv); \ |
823 | } STMT_END | |
824 | ||
825 | #define MULTICALL \ | |
826 | STMT_START { \ | |
827 | PL_op = multicall_cop; \ | |
828 | CALLRUNOPS(aTHX); \ | |
829 | } STMT_END | |
830 | ||
831 | #define POP_MULTICALL \ | |
832 | STMT_START { \ | |
82f35e8b RH |
833 | LEAVESUB(multicall_cv); \ |
834 | CvDEPTH(multicall_cv)--; \ | |
9850bf21 RH |
835 | POPBLOCK(cx,PL_curpm); \ |
836 | CATCH_SET(multicall_oldcatch); \ | |
837 | LEAVE; \ | |
838 | } STMT_END | |
b3ca2e83 NC |
839 | |
840 | /* | |
841 | * Local variables: | |
842 | * c-indentation-style: bsd | |
843 | * c-basic-offset: 4 | |
844 | * indent-tabs-mode: t | |
845 | * End: | |
846 | * | |
847 | * ex: set ts=8 sts=4 sw=4 noet: | |
848 | */ |