Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* cop.h |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, 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 | ||
79072805 LW |
16 | struct cop { |
17 | BASEOP | |
a0d0e21e | 18 | char * cop_label; /* label for this construct */ |
57843af0 | 19 | #ifdef USE_ITHREADS |
11faa288 | 20 | char * cop_stashpv; /* package line was compiled in */ |
57843af0 GS |
21 | char * cop_file; /* file name the following line # is from */ |
22 | #else | |
11faa288 | 23 | HV * cop_stash; /* package line was compiled in */ |
79072805 | 24 | GV * cop_filegv; /* file the following line # is from */ |
57843af0 | 25 | #endif |
a0d0e21e LW |
26 | U32 cop_seq; /* parse sequence number */ |
27 | I32 cop_arybase; /* array base this line was compiled with */ | |
79072805 | 28 | line_t cop_line; /* line # of this command */ |
599cee73 | 29 | SV * cop_warnings; /* lexical warnings bitmask */ |
ac27b0f5 | 30 | SV * cop_io; /* lexical IO defaults */ |
79072805 LW |
31 | }; |
32 | ||
33 | #define Nullcop Null(COP*) | |
34 | ||
57843af0 GS |
35 | #ifdef USE_ITHREADS |
36 | # define CopFILE(c) ((c)->cop_file) | |
37 | # define CopFILEGV(c) (CopFILE(c) \ | |
38 | ? gv_fetchfile(CopFILE(c)) : Nullgv) | |
083fcd59 | 39 | |
7e4e8c89 NC |
40 | # ifdef NETWARE |
41 | # define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) | |
42 | # else | |
43 | # define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv)) | |
44 | # endif | |
083fcd59 | 45 | |
57843af0 GS |
46 | # define CopFILESV(c) (CopFILE(c) \ |
47 | ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv) | |
48 | # define CopFILEAV(c) (CopFILE(c) \ | |
49 | ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav) | |
57843af0 | 50 | # define CopSTASHPV(c) ((c)->cop_stashpv) |
083fcd59 | 51 | |
7e4e8c89 NC |
52 | # ifdef NETWARE |
53 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch)) | |
54 | # else | |
55 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv)) | |
56 | # endif | |
083fcd59 | 57 | |
11faa288 GS |
58 | # define CopSTASH(c) (CopSTASHPV(c) \ |
59 | ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv) | |
7b910cb8 | 60 | # define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME(hv) : Nullch) |
f4dd75d9 | 61 | # define CopSTASH_eq(c,hv) ((hv) \ |
ed094faf GS |
62 | && (CopSTASHPV(c) == HvNAME(hv) \ |
63 | || (CopSTASHPV(c) && HvNAME(hv) \ | |
64 | && strEQ(CopSTASHPV(c), HvNAME(hv))))) | |
7e4e8c89 NC |
65 | # ifdef NETWARE |
66 | # define CopSTASH_free(c) SAVECOPSTASH_FREE(c) | |
67 | # else | |
68 | # define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c)) | |
69 | # endif | |
083fcd59 | 70 | |
7e4e8c89 NC |
71 | # ifdef NETWARE |
72 | # define CopFILE_free(c) SAVECOPFILE_FREE(c) | |
73 | # else | |
74 | # define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch)) | |
75 | # endif | |
57843af0 GS |
76 | #else |
77 | # define CopFILEGV(c) ((c)->cop_filegv) | |
f4dd75d9 GS |
78 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
79 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) | |
57843af0 GS |
80 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) |
81 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) | |
82 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) | |
83 | # define CopSTASH(c) ((c)->cop_stash) | |
f4dd75d9 | 84 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
57843af0 | 85 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) |
f4dd75d9 GS |
86 | /* cop_stash is not refcounted */ |
87 | # define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) | |
88 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) | |
05ec9bb3 NIS |
89 | # define CopSTASH_free(c) |
90 | # define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv)) | |
91 | ||
57843af0 GS |
92 | #endif /* USE_ITHREADS */ |
93 | ||
ed094faf | 94 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b | 95 | #define CopLINE(c) ((c)->cop_line) |
57843af0 GS |
96 | #define CopLINE_inc(c) (++CopLINE(c)) |
97 | #define CopLINE_dec(c) (--CopLINE(c)) | |
98 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) | |
cc49e20b | 99 | |
248c2a4d CN |
100 | /* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */ |
101 | #ifdef MACOS_TRADITIONAL | |
102 | # define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c)) | |
103 | #else | |
104 | # define OutCopFILE(c) CopFILE(c) | |
105 | #endif | |
106 | ||
79072805 LW |
107 | /* |
108 | * Here we have some enormously heavy (or at least ponderous) wizardry. | |
109 | */ | |
110 | ||
111 | /* subroutine context */ | |
112 | struct block_sub { | |
113 | CV * cv; | |
114 | GV * gv; | |
463ee0b2 | 115 | GV * dfoutgv; |
79072805 LW |
116 | AV * savearray; |
117 | AV * argarray; | |
b8f55b69 | 118 | long olddepth; |
79072805 | 119 | U8 hasargs; |
cd06dffe | 120 | U8 lval; /* XXX merge lval and hasargs? */ |
f3548bdc | 121 | PAD *oldcomppad; |
f39bc417 | 122 | OP * retop; /* op to execute on exit from sub */ |
79072805 LW |
123 | }; |
124 | ||
b36bdeca DM |
125 | /* base for the next two macros. Don't use directly. |
126 | * Note that the refcnt of the cv is incremented twice; The CX one is | |
127 | * decremented by LEAVESUB, the other by LEAVE. */ | |
128 | ||
ee98a1d6 | 129 | #define PUSHSUB_BASE(cx) \ |
79072805 | 130 | cx->blk_sub.cv = cv; \ |
b8f55b69 | 131 | cx->blk_sub.olddepth = CvDEPTH(cv); \ |
b36bdeca | 132 | cx->blk_sub.hasargs = hasargs; \ |
f39bc417 | 133 | cx->blk_sub.retop = Nullop; \ |
b36bdeca DM |
134 | if (!CvDEPTH(cv)) { \ |
135 | (void)SvREFCNT_inc(cv); \ | |
136 | (void)SvREFCNT_inc(cv); \ | |
137 | SAVEFREESV(cv); \ | |
138 | } | |
139 | ||
ee98a1d6 DM |
140 | |
141 | #define PUSHSUB(cx) \ | |
142 | PUSHSUB_BASE(cx) \ | |
cd06dffe GS |
143 | cx->blk_sub.lval = PL_op->op_private & \ |
144 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); | |
79072805 | 145 | |
ee98a1d6 DM |
146 | /* variant for use by OP_DBSTATE, where op_private holds hint bits */ |
147 | #define PUSHSUB_DB(cx) \ | |
148 | PUSHSUB_BASE(cx) \ | |
149 | cx->blk_sub.lval = 0; | |
150 | ||
151 | ||
79072805 LW |
152 | #define PUSHFORMAT(cx) \ |
153 | cx->blk_sub.cv = cv; \ | |
154 | cx->blk_sub.gv = gv; \ | |
f39bc417 | 155 | cx->blk_sub.retop = Nullop; \ |
4633a7c4 | 156 | cx->blk_sub.hasargs = 0; \ |
3280af22 | 157 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
4633a7c4 | 158 | (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) |
79072805 | 159 | |
3db8f154 | 160 | #define POP_SAVEARRAY() \ |
6d4ff0d2 | 161 | STMT_START { \ |
3280af22 | 162 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
a8bba7fa | 163 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
6d4ff0d2 | 164 | } STMT_END |
6d4ff0d2 | 165 | |
ecf8e9dd | 166 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b GS |
167 | * leave any (a fast av_clear(ary), basically) */ |
168 | #define CLEAR_ARGARRAY(ary) \ | |
169 | STMT_START { \ | |
170 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ | |
f880fe2f | 171 | SvPV_set(ary, (char*)AvALLOC(ary)); \ |
8e09340b GS |
172 | AvFILLp(ary) = -1; \ |
173 | } STMT_END | |
7766f137 | 174 | |
b0d9ce38 GS |
175 | #define POPSUB(cx,sv) \ |
176 | STMT_START { \ | |
a8bba7fa | 177 | if (cx->blk_sub.hasargs) { \ |
7766f137 | 178 | POP_SAVEARRAY(); \ |
d8b46c1b | 179 | /* abandon @_ if it got reified */ \ |
a8bba7fa GS |
180 | if (AvREAL(cx->blk_sub.argarray)) { \ |
181 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ | |
182 | SvREFCNT_dec(cx->blk_sub.argarray); \ | |
183 | cx->blk_sub.argarray = newAV(); \ | |
184 | av_extend(cx->blk_sub.argarray, fill); \ | |
185 | AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ | |
dd2155a4 | 186 | CX_CURPAD_SV(cx->blk_sub, 0) = (SV*)cx->blk_sub.argarray; \ |
d8b46c1b | 187 | } \ |
7766f137 | 188 | else { \ |
8e09340b | 189 | CLEAR_ARGARRAY(cx->blk_sub.argarray); \ |
7766f137 | 190 | } \ |
79072805 | 191 | } \ |
b0d9ce38 GS |
192 | sv = (SV*)cx->blk_sub.cv; \ |
193 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ | |
194 | sv = Nullsv; \ | |
195 | } STMT_END | |
196 | ||
197 | #define LEAVESUB(sv) \ | |
198 | STMT_START { \ | |
199 | if (sv) \ | |
200 | SvREFCNT_dec(sv); \ | |
201 | } STMT_END | |
79072805 LW |
202 | |
203 | #define POPFORMAT(cx) \ | |
4633a7c4 LW |
204 | setdefout(cx->blk_sub.dfoutgv); \ |
205 | SvREFCNT_dec(cx->blk_sub.dfoutgv); | |
79072805 LW |
206 | |
207 | /* eval context */ | |
208 | struct block_eval { | |
209 | I32 old_in_eval; | |
210 | I32 old_op_type; | |
0f79a09d | 211 | SV * old_namesv; |
79072805 | 212 | OP * old_eval_root; |
748a9306 | 213 | SV * cur_text; |
2090ab20 | 214 | CV * cv; |
f39bc417 | 215 | OP * retop; /* op to execute on exit from eval */ |
79072805 LW |
216 | }; |
217 | ||
8990e307 | 218 | #define PUSHEVAL(cx,n,fgv) \ |
0f79a09d | 219 | STMT_START { \ |
3280af22 | 220 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
a8bba7fa | 221 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
0f79a09d | 222 | cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \ |
a8bba7fa | 223 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
0f79a09d | 224 | cx->blk_eval.cur_text = PL_linestr; \ |
2090ab20 | 225 | cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \ |
f39bc417 | 226 | cx->blk_eval.retop = Nullop; \ |
0f79a09d | 227 | } STMT_END |
79072805 LW |
228 | |
229 | #define POPEVAL(cx) \ | |
0f79a09d | 230 | STMT_START { \ |
3280af22 | 231 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
79072805 | 232 | optype = cx->blk_eval.old_op_type; \ |
7766f137 | 233 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
0f79a09d GS |
234 | if (cx->blk_eval.old_namesv) \ |
235 | sv_2mortal(cx->blk_eval.old_namesv); \ | |
236 | } STMT_END | |
79072805 LW |
237 | |
238 | /* loop context */ | |
239 | struct block_loop { | |
240 | char * label; | |
241 | I32 resetsp; | |
242 | OP * redo_op; | |
243 | OP * next_op; | |
244 | OP * last_op; | |
7766f137 GS |
245 | #ifdef USE_ITHREADS |
246 | void * iterdata; | |
f3548bdc | 247 | PAD *oldcomppad; |
7766f137 | 248 | #else |
79072805 | 249 | SV ** itervar; |
7766f137 | 250 | #endif |
79072805 | 251 | SV * itersave; |
5f05dabc | 252 | SV * iterlval; |
79072805 | 253 | AV * iterary; |
89ea2908 GA |
254 | IV iterix; |
255 | IV itermax; | |
79072805 LW |
256 | }; |
257 | ||
7766f137 GS |
258 | #ifdef USE_ITHREADS |
259 | # define CxITERVAR(c) \ | |
260 | ((c)->blk_loop.iterdata \ | |
261 | ? (CxPADLOOP(cx) \ | |
dd2155a4 DM |
262 | ? &CX_CURPAD_SV( (c)->blk_loop, \ |
263 | INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)) \ | |
7766f137 GS |
264 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
265 | : (SV**)NULL) | |
266 | # define CX_ITERDATA_SET(cx,idata) \ | |
dd2155a4 | 267 | CX_CURPAD_SAVE(cx->blk_loop); \ |
155aba94 | 268 | if ((cx->blk_loop.iterdata = (idata))) \ |
d10edb75 KC |
269 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
270 | else \ | |
271 | cx->blk_loop.itersave = Nullsv; | |
7766f137 GS |
272 | #else |
273 | # define CxITERVAR(c) ((c)->blk_loop.itervar) | |
274 | # define CX_ITERDATA_SET(cx,ivar) \ | |
155aba94 | 275 | if ((cx->blk_loop.itervar = (SV**)(ivar))) \ |
d10edb75 KC |
276 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
277 | else \ | |
278 | cx->blk_loop.itersave = Nullsv; | |
7766f137 GS |
279 | #endif |
280 | ||
281 | #define PUSHLOOP(cx, dat, s) \ | |
38a230cb GS |
282 | cx->blk_loop.label = PL_curcop->cop_label; \ |
283 | cx->blk_loop.resetsp = s - PL_stack_base; \ | |
79072805 LW |
284 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
285 | cx->blk_loop.next_op = cLOOP->op_nextop; \ | |
286 | cx->blk_loop.last_op = cLOOP->op_lastop; \ | |
44a8e56a | 287 | cx->blk_loop.iterlval = Nullsv; \ |
288 | cx->blk_loop.iterary = Nullav; \ | |
7766f137 GS |
289 | cx->blk_loop.iterix = -1; \ |
290 | CX_ITERDATA_SET(cx,dat); | |
79072805 LW |
291 | |
292 | #define POPLOOP(cx) \ | |
a8bba7fa | 293 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
7766f137 GS |
294 | if (CxITERVAR(cx)) { \ |
295 | SV **s_v_p = CxITERVAR(cx); \ | |
296 | sv_2mortal(*s_v_p); \ | |
297 | *s_v_p = cx->blk_loop.itersave; \ | |
44a8e56a | 298 | } \ |
a8bba7fa GS |
299 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
300 | SvREFCNT_dec(cx->blk_loop.iterary); | |
79072805 LW |
301 | |
302 | /* context common to subroutines, evals and loops */ | |
303 | struct block { | |
304 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ | |
305 | COP * blku_oldcop; /* old curcop pointer */ | |
79072805 LW |
306 | I32 blku_oldmarksp; /* mark stack index */ |
307 | I32 blku_oldscopesp; /* scope stack index */ | |
308 | PMOP * blku_oldpm; /* values of pattern match vars */ | |
309 | U8 blku_gimme; /* is this block running in list context? */ | |
310 | ||
311 | union { | |
312 | struct block_sub blku_sub; | |
313 | struct block_eval blku_eval; | |
314 | struct block_loop blku_loop; | |
315 | } blk_u; | |
316 | }; | |
317 | #define blk_oldsp cx_u.cx_blk.blku_oldsp | |
318 | #define blk_oldcop cx_u.cx_blk.blku_oldcop | |
79072805 LW |
319 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp |
320 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp | |
321 | #define blk_oldpm cx_u.cx_blk.blku_oldpm | |
322 | #define blk_gimme cx_u.cx_blk.blku_gimme | |
323 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub | |
324 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval | |
325 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop | |
326 | ||
327 | /* Enter a block. */ | |
8990e307 | 328 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 | 329 | cx->cx_type = t, \ |
3280af22 NIS |
330 | cx->blk_oldsp = sp - PL_stack_base, \ |
331 | cx->blk_oldcop = PL_curcop, \ | |
1aff0e91 | 332 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 | 333 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
3280af22 | 334 | cx->blk_oldpm = PL_curpm, \ |
eb160463 | 335 | cx->blk_gimme = (U8)gimme; \ |
bf49b057 | 336 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 | 337 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
338 | |
339 | /* Exit a block (RETURN and LAST). */ | |
a0d0e21e | 340 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 | 341 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
342 | PL_curcop = cx->blk_oldcop, \ |
343 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ | |
344 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
3280af22 NIS |
345 | pm = cx->blk_oldpm, \ |
346 | gimme = cx->blk_gimme; \ | |
b4ab917c | 347 | DEBUG_SCOPE("POPBLOCK"); \ |
bf49b057 | 348 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c | 349 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
350 | |
351 | /* Continue a block elsewhere (NEXT and REDO). */ | |
3280af22 | 352 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 | 353 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
354 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
355 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
b4ab917c DM |
356 | PL_curpm = cx->blk_oldpm; \ |
357 | DEBUG_SCOPE("TOPBLOCK"); | |
79072805 LW |
358 | |
359 | /* substitution context */ | |
360 | struct subst { | |
361 | I32 sbu_iters; | |
362 | I32 sbu_maxiters; | |
22e551b9 | 363 | I32 sbu_rflags; |
4633a7c4 | 364 | I32 sbu_oldsave; |
71be2cbc | 365 | bool sbu_once; |
366 | bool sbu_rxtainted; | |
79072805 LW |
367 | char * sbu_orig; |
368 | SV * sbu_dstr; | |
369 | SV * sbu_targ; | |
370 | char * sbu_s; | |
371 | char * sbu_m; | |
372 | char * sbu_strend; | |
c90c0ff4 | 373 | void * sbu_rxres; |
c07a80fd | 374 | REGEXP * sbu_rx; |
79072805 LW |
375 | }; |
376 | #define sb_iters cx_u.cx_subst.sbu_iters | |
377 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters | |
22e551b9 | 378 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 | 379 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc | 380 | #define sb_once cx_u.cx_subst.sbu_once |
381 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted | |
79072805 LW |
382 | #define sb_orig cx_u.cx_subst.sbu_orig |
383 | #define sb_dstr cx_u.cx_subst.sbu_dstr | |
384 | #define sb_targ cx_u.cx_subst.sbu_targ | |
385 | #define sb_s cx_u.cx_subst.sbu_s | |
386 | #define sb_m cx_u.cx_subst.sbu_m | |
387 | #define sb_strend cx_u.cx_subst.sbu_strend | |
c90c0ff4 | 388 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd | 389 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 LW |
390 | |
391 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ | |
392 | cx->sb_iters = iters, \ | |
393 | cx->sb_maxiters = maxiters, \ | |
22e551b9 | 394 | cx->sb_rflags = r_flags, \ |
4633a7c4 | 395 | cx->sb_oldsave = oldsave, \ |
71be2cbc | 396 | cx->sb_once = once, \ |
397 | cx->sb_rxtainted = rxtainted, \ | |
79072805 LW |
398 | cx->sb_orig = orig, \ |
399 | cx->sb_dstr = dstr, \ | |
400 | cx->sb_targ = targ, \ | |
401 | cx->sb_s = s, \ | |
402 | cx->sb_m = m, \ | |
403 | cx->sb_strend = strend, \ | |
c90c0ff4 | 404 | cx->sb_rxres = Null(void*), \ |
c07a80fd | 405 | cx->sb_rx = rx, \ |
c90c0ff4 | 406 | cx->cx_type = CXt_SUBST; \ |
407 | rxres_save(&cx->sb_rxres, rx) | |
79072805 | 408 | |
c90c0ff4 | 409 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
410 | rxres_free(&cx->sb_rxres) | |
79072805 LW |
411 | |
412 | struct context { | |
6b35e009 | 413 | U32 cx_type; /* what kind of context this is */ |
79072805 LW |
414 | union { |
415 | struct block cx_blk; | |
416 | struct subst cx_subst; | |
417 | } cx_u; | |
418 | }; | |
6b35e009 GS |
419 | |
420 | #define CXTYPEMASK 0xff | |
79072805 LW |
421 | #define CXt_NULL 0 |
422 | #define CXt_SUB 1 | |
423 | #define CXt_EVAL 2 | |
424 | #define CXt_LOOP 3 | |
425 | #define CXt_SUBST 4 | |
426 | #define CXt_BLOCK 5 | |
7766f137 | 427 | #define CXt_FORMAT 6 |
79072805 | 428 | |
6b35e009 GS |
429 | /* private flags for CXt_EVAL */ |
430 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ | |
1d76a5c3 | 431 | #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ |
6b35e009 | 432 | |
7766f137 GS |
433 | #ifdef USE_ITHREADS |
434 | /* private flags for CXt_LOOP */ | |
435 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata | |
436 | has pad offset; if not set, | |
437 | iterdata holds GV* */ | |
438 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ | |
439 | == (CXt_LOOP|CXp_PADVAR)) | |
440 | #endif | |
441 | ||
6b35e009 | 442 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7766f137 GS |
443 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
444 | == (CXt_EVAL|CXp_REAL)) | |
1d76a5c3 GS |
445 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ |
446 | == (CXt_EVAL|CXp_TRYBLOCK)) | |
6b35e009 | 447 | |
79072805 LW |
448 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
449 | ||
ccfc67b7 JH |
450 | /* |
451 | =head1 "Gimme" Values | |
452 | */ | |
954c1994 GS |
453 | |
454 | /* | |
455 | =for apidoc AmU||G_SCALAR | |
456 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
457 | L<perlcall>. | |
458 | ||
459 | =for apidoc AmU||G_ARRAY | |
91e74348 | 460 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 GS |
461 | L<perlcall>. |
462 | ||
463 | =for apidoc AmU||G_VOID | |
464 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
465 | ||
466 | =for apidoc AmU||G_DISCARD | |
467 | Indicates that arguments returned from a callback should be discarded. See | |
468 | L<perlcall>. | |
469 | ||
470 | =for apidoc AmU||G_EVAL | |
471 | ||
472 | Used to force a Perl C<eval> wrapper around a callback. See | |
473 | L<perlcall>. | |
474 | ||
475 | =for apidoc AmU||G_NOARGS | |
476 | ||
477 | Indicates that no arguments are being sent to a callback. See | |
478 | L<perlcall>. | |
479 | ||
480 | =cut | |
481 | */ | |
482 | ||
a0d0e21e LW |
483 | #define G_SCALAR 0 |
484 | #define G_ARRAY 1 | |
54310121 | 485 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 | 486 | |
864dbfa3 | 487 | /* extra flags for Perl_call_* routines */ |
a0d0e21e LW |
488 | #define G_DISCARD 2 /* Call FREETMPS. */ |
489 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ | |
490 | #define G_NOARGS 8 /* Don't construct a @_ array. */ | |
54310121 | 491 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 | 492 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
968b3946 | 493 | #define G_METHOD 64 /* Calling method. */ |
e336de0d | 494 | |
faef0170 HS |
495 | /* flag bits for PL_in_eval */ |
496 | #define EVAL_NULL 0 /* not in an eval */ | |
497 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ | |
498 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ | |
864dbfa3 | 499 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 | 500 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
faef0170 | 501 | |
e336de0d GS |
502 | /* Support for switching (stack and block) contexts. |
503 | * This ensures magic doesn't invalidate local stack and cx pointers. | |
504 | */ | |
505 | ||
e788e7d3 GS |
506 | #define PERLSI_UNKNOWN -1 |
507 | #define PERLSI_UNDEF 0 | |
508 | #define PERLSI_MAIN 1 | |
509 | #define PERLSI_MAGIC 2 | |
510 | #define PERLSI_SORT 3 | |
511 | #define PERLSI_SIGNAL 4 | |
512 | #define PERLSI_OVERLOAD 5 | |
513 | #define PERLSI_DESTROY 6 | |
514 | #define PERLSI_WARNHOOK 7 | |
515 | #define PERLSI_DIEHOOK 8 | |
516 | #define PERLSI_REQUIRE 9 | |
e336de0d GS |
517 | |
518 | struct stackinfo { | |
519 | AV * si_stack; /* stack for current runlevel */ | |
520 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ | |
521 | I32 si_cxix; /* current context index */ | |
522 | I32 si_cxmax; /* maximum allocated index */ | |
523 | I32 si_type; /* type of runlevel */ | |
524 | struct stackinfo * si_prev; | |
525 | struct stackinfo * si_next; | |
ce2f7c3b | 526 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d GS |
527 | * currently used only with DEBUGGING, |
528 | * but not #ifdef-ed for bincompat */ | |
529 | }; | |
530 | ||
531 | typedef struct stackinfo PERL_SI; | |
532 | ||
3280af22 NIS |
533 | #define cxstack (PL_curstackinfo->si_cxstack) |
534 | #define cxstack_ix (PL_curstackinfo->si_cxix) | |
535 | #define cxstack_max (PL_curstackinfo->si_cxmax) | |
e336de0d GS |
536 | |
537 | #ifdef DEBUGGING | |
ce2f7c3b GS |
538 | # define SET_MARK_OFFSET \ |
539 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack | |
e336de0d | 540 | #else |
ce2f7c3b | 541 | # define SET_MARK_OFFSET NOOP |
e336de0d GS |
542 | #endif |
543 | ||
d3acc0f7 | 544 | #define PUSHSTACKi(type) \ |
e336de0d | 545 | STMT_START { \ |
3280af22 | 546 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d GS |
547 | if (!next) { \ |
548 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ | |
3280af22 NIS |
549 | next->si_prev = PL_curstackinfo; \ |
550 | PL_curstackinfo->si_next = next; \ | |
e336de0d GS |
551 | } \ |
552 | next->si_type = type; \ | |
553 | next->si_cxix = -1; \ | |
554 | AvFILLp(next->si_stack) = 0; \ | |
3280af22 NIS |
555 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
556 | PL_curstackinfo = next; \ | |
ce2f7c3b | 557 | SET_MARK_OFFSET; \ |
e336de0d GS |
558 | } STMT_END |
559 | ||
e788e7d3 | 560 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 | 561 | |
3095d977 GS |
562 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
563 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ | |
d3acc0f7 | 564 | #define POPSTACK \ |
e336de0d | 565 | STMT_START { \ |
39644a26 | 566 | dSP; \ |
3280af22 | 567 | PERL_SI *prev = PL_curstackinfo->si_prev; \ |
e336de0d | 568 | if (!prev) { \ |
bf49b057 | 569 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d GS |
570 | my_exit(1); \ |
571 | } \ | |
3280af22 | 572 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d | 573 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 | 574 | PL_curstackinfo = prev; \ |
e336de0d GS |
575 | } STMT_END |
576 | ||
577 | #define POPSTACK_TO(s) \ | |
578 | STMT_START { \ | |
3280af22 | 579 | while (PL_curstack != s) { \ |
bac4b2ad | 580 | dounwind(-1); \ |
d3acc0f7 | 581 | POPSTACK; \ |
bac4b2ad | 582 | } \ |
e336de0d | 583 | } STMT_END |
923e4eb5 JH |
584 | |
585 | #define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling) | |
586 | #define IN_PERL_RUNTIME (PL_curcop != &PL_compiling) | |
587 |