Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* cop.h |
79072805 | 2 | * |
be3c0a43 | 3 | * Copyright (c) 1991-2002, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
79072805 LW |
8 | */ |
9 | ||
79072805 LW |
10 | struct cop { |
11 | BASEOP | |
a0d0e21e | 12 | char * cop_label; /* label for this construct */ |
57843af0 | 13 | #ifdef USE_ITHREADS |
11faa288 | 14 | char * cop_stashpv; /* package line was compiled in */ |
57843af0 GS |
15 | char * cop_file; /* file name the following line # is from */ |
16 | #else | |
11faa288 | 17 | HV * cop_stash; /* package line was compiled in */ |
79072805 | 18 | GV * cop_filegv; /* file the following line # is from */ |
57843af0 | 19 | #endif |
a0d0e21e LW |
20 | U32 cop_seq; /* parse sequence number */ |
21 | I32 cop_arybase; /* array base this line was compiled with */ | |
79072805 | 22 | line_t cop_line; /* line # of this command */ |
599cee73 | 23 | SV * cop_warnings; /* lexical warnings bitmask */ |
ac27b0f5 | 24 | SV * cop_io; /* lexical IO defaults */ |
79072805 LW |
25 | }; |
26 | ||
27 | #define Nullcop Null(COP*) | |
28 | ||
57843af0 GS |
29 | #ifdef USE_ITHREADS |
30 | # define CopFILE(c) ((c)->cop_file) | |
31 | # define CopFILEGV(c) (CopFILE(c) \ | |
32 | ? gv_fetchfile(CopFILE(c)) : Nullgv) | |
05ec9bb3 | 33 | # define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv)) |
57843af0 GS |
34 | # define CopFILESV(c) (CopFILE(c) \ |
35 | ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv) | |
36 | # define CopFILEAV(c) (CopFILE(c) \ | |
37 | ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav) | |
57843af0 | 38 | # define CopSTASHPV(c) ((c)->cop_stashpv) |
05ec9bb3 | 39 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv)) |
11faa288 GS |
40 | # define CopSTASH(c) (CopSTASHPV(c) \ |
41 | ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv) | |
7b910cb8 | 42 | # define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME(hv) : Nullch) |
f4dd75d9 | 43 | # define CopSTASH_eq(c,hv) ((hv) \ |
ed094faf GS |
44 | && (CopSTASHPV(c) == HvNAME(hv) \ |
45 | || (CopSTASHPV(c) && HvNAME(hv) \ | |
46 | && strEQ(CopSTASHPV(c), HvNAME(hv))))) | |
05ec9bb3 NIS |
47 | # define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c)) |
48 | # define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch)) | |
57843af0 GS |
49 | #else |
50 | # define CopFILEGV(c) ((c)->cop_filegv) | |
f4dd75d9 GS |
51 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
52 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) | |
57843af0 GS |
53 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) |
54 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) | |
55 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) | |
56 | # define CopSTASH(c) ((c)->cop_stash) | |
f4dd75d9 | 57 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
57843af0 | 58 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) |
f4dd75d9 GS |
59 | /* cop_stash is not refcounted */ |
60 | # define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) | |
61 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) | |
05ec9bb3 NIS |
62 | # define CopSTASH_free(c) |
63 | # define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv)) | |
64 | ||
57843af0 GS |
65 | #endif /* USE_ITHREADS */ |
66 | ||
ed094faf | 67 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b | 68 | #define CopLINE(c) ((c)->cop_line) |
57843af0 GS |
69 | #define CopLINE_inc(c) (++CopLINE(c)) |
70 | #define CopLINE_dec(c) (--CopLINE(c)) | |
71 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) | |
cc49e20b | 72 | |
248c2a4d CN |
73 | /* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */ |
74 | #ifdef MACOS_TRADITIONAL | |
75 | # define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c)) | |
76 | #else | |
77 | # define OutCopFILE(c) CopFILE(c) | |
78 | #endif | |
79 | ||
79072805 LW |
80 | /* |
81 | * Here we have some enormously heavy (or at least ponderous) wizardry. | |
82 | */ | |
83 | ||
84 | /* subroutine context */ | |
85 | struct block_sub { | |
86 | CV * cv; | |
87 | GV * gv; | |
463ee0b2 | 88 | GV * dfoutgv; |
4d1ff10f | 89 | #ifndef USE_5005THREADS |
79072805 | 90 | AV * savearray; |
4d1ff10f | 91 | #endif /* USE_5005THREADS */ |
79072805 LW |
92 | AV * argarray; |
93 | U16 olddepth; | |
94 | U8 hasargs; | |
cd06dffe | 95 | U8 lval; /* XXX merge lval and hasargs? */ |
7032098e | 96 | SV ** oldcurpad; |
79072805 LW |
97 | }; |
98 | ||
99 | #define PUSHSUB(cx) \ | |
100 | cx->blk_sub.cv = cv; \ | |
79072805 | 101 | cx->blk_sub.olddepth = CvDEPTH(cv); \ |
cd06dffe GS |
102 | cx->blk_sub.hasargs = hasargs; \ |
103 | cx->blk_sub.lval = PL_op->op_private & \ | |
104 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); | |
79072805 LW |
105 | |
106 | #define PUSHFORMAT(cx) \ | |
107 | cx->blk_sub.cv = cv; \ | |
108 | cx->blk_sub.gv = gv; \ | |
4633a7c4 | 109 | cx->blk_sub.hasargs = 0; \ |
3280af22 | 110 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
4633a7c4 | 111 | (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) |
79072805 | 112 | |
4d1ff10f | 113 | #ifdef USE_5005THREADS |
7766f137 | 114 | # define POP_SAVEARRAY() NOOP |
6d4ff0d2 | 115 | #else |
7766f137 | 116 | # define POP_SAVEARRAY() \ |
6d4ff0d2 | 117 | STMT_START { \ |
3280af22 | 118 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
a8bba7fa | 119 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
6d4ff0d2 | 120 | } STMT_END |
4d1ff10f | 121 | #endif /* USE_5005THREADS */ |
6d4ff0d2 | 122 | |
ecf8e9dd | 123 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b GS |
124 | * leave any (a fast av_clear(ary), basically) */ |
125 | #define CLEAR_ARGARRAY(ary) \ | |
126 | STMT_START { \ | |
127 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ | |
128 | SvPVX(ary) = (char*)AvALLOC(ary); \ | |
129 | AvFILLp(ary) = -1; \ | |
130 | } STMT_END | |
7766f137 | 131 | |
b0d9ce38 GS |
132 | #define POPSUB(cx,sv) \ |
133 | STMT_START { \ | |
a8bba7fa | 134 | if (cx->blk_sub.hasargs) { \ |
7766f137 | 135 | POP_SAVEARRAY(); \ |
d8b46c1b | 136 | /* abandon @_ if it got reified */ \ |
a8bba7fa GS |
137 | if (AvREAL(cx->blk_sub.argarray)) { \ |
138 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ | |
139 | SvREFCNT_dec(cx->blk_sub.argarray); \ | |
140 | cx->blk_sub.argarray = newAV(); \ | |
141 | av_extend(cx->blk_sub.argarray, fill); \ | |
142 | AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ | |
7032098e | 143 | cx->blk_sub.oldcurpad[0] = (SV*)cx->blk_sub.argarray; \ |
d8b46c1b | 144 | } \ |
7766f137 | 145 | else { \ |
8e09340b | 146 | CLEAR_ARGARRAY(cx->blk_sub.argarray); \ |
7766f137 | 147 | } \ |
79072805 | 148 | } \ |
b0d9ce38 GS |
149 | sv = (SV*)cx->blk_sub.cv; \ |
150 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ | |
151 | sv = Nullsv; \ | |
152 | } STMT_END | |
153 | ||
154 | #define LEAVESUB(sv) \ | |
155 | STMT_START { \ | |
156 | if (sv) \ | |
157 | SvREFCNT_dec(sv); \ | |
158 | } STMT_END | |
79072805 LW |
159 | |
160 | #define POPFORMAT(cx) \ | |
4633a7c4 LW |
161 | setdefout(cx->blk_sub.dfoutgv); \ |
162 | SvREFCNT_dec(cx->blk_sub.dfoutgv); | |
79072805 LW |
163 | |
164 | /* eval context */ | |
165 | struct block_eval { | |
166 | I32 old_in_eval; | |
167 | I32 old_op_type; | |
0f79a09d | 168 | SV * old_namesv; |
79072805 | 169 | OP * old_eval_root; |
748a9306 | 170 | SV * cur_text; |
2090ab20 | 171 | CV * cv; |
79072805 LW |
172 | }; |
173 | ||
8990e307 | 174 | #define PUSHEVAL(cx,n,fgv) \ |
0f79a09d | 175 | STMT_START { \ |
3280af22 | 176 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
a8bba7fa | 177 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
0f79a09d | 178 | cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \ |
a8bba7fa | 179 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
0f79a09d | 180 | cx->blk_eval.cur_text = PL_linestr; \ |
2090ab20 | 181 | cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \ |
0f79a09d | 182 | } STMT_END |
79072805 LW |
183 | |
184 | #define POPEVAL(cx) \ | |
0f79a09d | 185 | STMT_START { \ |
3280af22 | 186 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
79072805 | 187 | optype = cx->blk_eval.old_op_type; \ |
7766f137 | 188 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
0f79a09d GS |
189 | if (cx->blk_eval.old_namesv) \ |
190 | sv_2mortal(cx->blk_eval.old_namesv); \ | |
191 | } STMT_END | |
79072805 LW |
192 | |
193 | /* loop context */ | |
194 | struct block_loop { | |
195 | char * label; | |
196 | I32 resetsp; | |
197 | OP * redo_op; | |
198 | OP * next_op; | |
199 | OP * last_op; | |
7766f137 GS |
200 | #ifdef USE_ITHREADS |
201 | void * iterdata; | |
9e509370 | 202 | SV ** oldcurpad; |
7766f137 | 203 | #else |
79072805 | 204 | SV ** itervar; |
7766f137 | 205 | #endif |
79072805 | 206 | SV * itersave; |
5f05dabc | 207 | SV * iterlval; |
79072805 | 208 | AV * iterary; |
89ea2908 GA |
209 | IV iterix; |
210 | IV itermax; | |
79072805 LW |
211 | }; |
212 | ||
7766f137 GS |
213 | #ifdef USE_ITHREADS |
214 | # define CxITERVAR(c) \ | |
215 | ((c)->blk_loop.iterdata \ | |
216 | ? (CxPADLOOP(cx) \ | |
e830ead6 | 217 | ? &((c)->blk_loop.oldcurpad)[INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)] \ |
7766f137 GS |
218 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
219 | : (SV**)NULL) | |
220 | # define CX_ITERDATA_SET(cx,idata) \ | |
9e509370 | 221 | cx->blk_loop.oldcurpad = PL_curpad; \ |
155aba94 | 222 | if ((cx->blk_loop.iterdata = (idata))) \ |
7766f137 GS |
223 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
224 | #else | |
225 | # define CxITERVAR(c) ((c)->blk_loop.itervar) | |
226 | # define CX_ITERDATA_SET(cx,ivar) \ | |
155aba94 | 227 | if ((cx->blk_loop.itervar = (SV**)(ivar))) \ |
7766f137 GS |
228 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
229 | #endif | |
230 | ||
231 | #define PUSHLOOP(cx, dat, s) \ | |
38a230cb GS |
232 | cx->blk_loop.label = PL_curcop->cop_label; \ |
233 | cx->blk_loop.resetsp = s - PL_stack_base; \ | |
79072805 LW |
234 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
235 | cx->blk_loop.next_op = cLOOP->op_nextop; \ | |
236 | cx->blk_loop.last_op = cLOOP->op_lastop; \ | |
44a8e56a | 237 | cx->blk_loop.iterlval = Nullsv; \ |
238 | cx->blk_loop.iterary = Nullav; \ | |
7766f137 GS |
239 | cx->blk_loop.iterix = -1; \ |
240 | CX_ITERDATA_SET(cx,dat); | |
79072805 LW |
241 | |
242 | #define POPLOOP(cx) \ | |
a8bba7fa | 243 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
7766f137 GS |
244 | if (CxITERVAR(cx)) { \ |
245 | SV **s_v_p = CxITERVAR(cx); \ | |
246 | sv_2mortal(*s_v_p); \ | |
247 | *s_v_p = cx->blk_loop.itersave; \ | |
44a8e56a | 248 | } \ |
a8bba7fa GS |
249 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
250 | SvREFCNT_dec(cx->blk_loop.iterary); | |
79072805 LW |
251 | |
252 | /* context common to subroutines, evals and loops */ | |
253 | struct block { | |
254 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ | |
255 | COP * blku_oldcop; /* old curcop pointer */ | |
256 | I32 blku_oldretsp; /* return stack index */ | |
257 | I32 blku_oldmarksp; /* mark stack index */ | |
258 | I32 blku_oldscopesp; /* scope stack index */ | |
259 | PMOP * blku_oldpm; /* values of pattern match vars */ | |
260 | U8 blku_gimme; /* is this block running in list context? */ | |
261 | ||
262 | union { | |
263 | struct block_sub blku_sub; | |
264 | struct block_eval blku_eval; | |
265 | struct block_loop blku_loop; | |
266 | } blk_u; | |
267 | }; | |
268 | #define blk_oldsp cx_u.cx_blk.blku_oldsp | |
269 | #define blk_oldcop cx_u.cx_blk.blku_oldcop | |
270 | #define blk_oldretsp cx_u.cx_blk.blku_oldretsp | |
271 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp | |
272 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp | |
273 | #define blk_oldpm cx_u.cx_blk.blku_oldpm | |
274 | #define blk_gimme cx_u.cx_blk.blku_gimme | |
275 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub | |
276 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval | |
277 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop | |
278 | ||
279 | /* Enter a block. */ | |
8990e307 | 280 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 | 281 | cx->cx_type = t, \ |
3280af22 NIS |
282 | cx->blk_oldsp = sp - PL_stack_base, \ |
283 | cx->blk_oldcop = PL_curcop, \ | |
1aff0e91 | 284 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 | 285 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
1aff0e91 | 286 | cx->blk_oldretsp = PL_retstack_ix, \ |
3280af22 | 287 | cx->blk_oldpm = PL_curpm, \ |
79072805 | 288 | cx->blk_gimme = gimme; \ |
bf49b057 | 289 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 | 290 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
291 | |
292 | /* Exit a block (RETURN and LAST). */ | |
a0d0e21e | 293 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 | 294 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
295 | PL_curcop = cx->blk_oldcop, \ |
296 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ | |
297 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
298 | PL_retstack_ix = cx->blk_oldretsp, \ | |
299 | pm = cx->blk_oldpm, \ | |
300 | gimme = cx->blk_gimme; \ | |
bf49b057 | 301 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c | 302 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
303 | |
304 | /* Continue a block elsewhere (NEXT and REDO). */ | |
3280af22 | 305 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 | 306 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
307 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
308 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
2158dd9b GS |
309 | PL_retstack_ix = cx->blk_oldretsp, \ |
310 | PL_curpm = cx->blk_oldpm | |
79072805 LW |
311 | |
312 | /* substitution context */ | |
313 | struct subst { | |
314 | I32 sbu_iters; | |
315 | I32 sbu_maxiters; | |
22e551b9 | 316 | I32 sbu_rflags; |
4633a7c4 | 317 | I32 sbu_oldsave; |
71be2cbc | 318 | bool sbu_once; |
319 | bool sbu_rxtainted; | |
79072805 LW |
320 | char * sbu_orig; |
321 | SV * sbu_dstr; | |
322 | SV * sbu_targ; | |
323 | char * sbu_s; | |
324 | char * sbu_m; | |
325 | char * sbu_strend; | |
c90c0ff4 | 326 | void * sbu_rxres; |
c07a80fd | 327 | REGEXP * sbu_rx; |
79072805 LW |
328 | }; |
329 | #define sb_iters cx_u.cx_subst.sbu_iters | |
330 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters | |
22e551b9 | 331 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 | 332 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc | 333 | #define sb_once cx_u.cx_subst.sbu_once |
334 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted | |
79072805 LW |
335 | #define sb_orig cx_u.cx_subst.sbu_orig |
336 | #define sb_dstr cx_u.cx_subst.sbu_dstr | |
337 | #define sb_targ cx_u.cx_subst.sbu_targ | |
338 | #define sb_s cx_u.cx_subst.sbu_s | |
339 | #define sb_m cx_u.cx_subst.sbu_m | |
340 | #define sb_strend cx_u.cx_subst.sbu_strend | |
c90c0ff4 | 341 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd | 342 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 LW |
343 | |
344 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ | |
345 | cx->sb_iters = iters, \ | |
346 | cx->sb_maxiters = maxiters, \ | |
22e551b9 | 347 | cx->sb_rflags = r_flags, \ |
4633a7c4 | 348 | cx->sb_oldsave = oldsave, \ |
71be2cbc | 349 | cx->sb_once = once, \ |
350 | cx->sb_rxtainted = rxtainted, \ | |
79072805 LW |
351 | cx->sb_orig = orig, \ |
352 | cx->sb_dstr = dstr, \ | |
353 | cx->sb_targ = targ, \ | |
354 | cx->sb_s = s, \ | |
355 | cx->sb_m = m, \ | |
356 | cx->sb_strend = strend, \ | |
c90c0ff4 | 357 | cx->sb_rxres = Null(void*), \ |
c07a80fd | 358 | cx->sb_rx = rx, \ |
c90c0ff4 | 359 | cx->cx_type = CXt_SUBST; \ |
360 | rxres_save(&cx->sb_rxres, rx) | |
79072805 | 361 | |
c90c0ff4 | 362 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
363 | rxres_free(&cx->sb_rxres) | |
79072805 LW |
364 | |
365 | struct context { | |
6b35e009 | 366 | U32 cx_type; /* what kind of context this is */ |
79072805 LW |
367 | union { |
368 | struct block cx_blk; | |
369 | struct subst cx_subst; | |
370 | } cx_u; | |
371 | }; | |
6b35e009 GS |
372 | |
373 | #define CXTYPEMASK 0xff | |
79072805 LW |
374 | #define CXt_NULL 0 |
375 | #define CXt_SUB 1 | |
376 | #define CXt_EVAL 2 | |
377 | #define CXt_LOOP 3 | |
378 | #define CXt_SUBST 4 | |
379 | #define CXt_BLOCK 5 | |
7766f137 | 380 | #define CXt_FORMAT 6 |
79072805 | 381 | |
6b35e009 GS |
382 | /* private flags for CXt_EVAL */ |
383 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ | |
1d76a5c3 | 384 | #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ |
6b35e009 | 385 | |
7766f137 GS |
386 | #ifdef USE_ITHREADS |
387 | /* private flags for CXt_LOOP */ | |
388 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata | |
389 | has pad offset; if not set, | |
390 | iterdata holds GV* */ | |
391 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ | |
392 | == (CXt_LOOP|CXp_PADVAR)) | |
393 | #endif | |
394 | ||
6b35e009 | 395 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7766f137 GS |
396 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
397 | == (CXt_EVAL|CXp_REAL)) | |
1d76a5c3 GS |
398 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ |
399 | == (CXt_EVAL|CXp_TRYBLOCK)) | |
6b35e009 | 400 | |
79072805 LW |
401 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
402 | ||
ccfc67b7 JH |
403 | /* |
404 | =head1 "Gimme" Values | |
405 | */ | |
954c1994 GS |
406 | |
407 | /* | |
408 | =for apidoc AmU||G_SCALAR | |
409 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
410 | L<perlcall>. | |
411 | ||
412 | =for apidoc AmU||G_ARRAY | |
91e74348 | 413 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 GS |
414 | L<perlcall>. |
415 | ||
416 | =for apidoc AmU||G_VOID | |
417 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
418 | ||
419 | =for apidoc AmU||G_DISCARD | |
420 | Indicates that arguments returned from a callback should be discarded. See | |
421 | L<perlcall>. | |
422 | ||
423 | =for apidoc AmU||G_EVAL | |
424 | ||
425 | Used to force a Perl C<eval> wrapper around a callback. See | |
426 | L<perlcall>. | |
427 | ||
428 | =for apidoc AmU||G_NOARGS | |
429 | ||
430 | Indicates that no arguments are being sent to a callback. See | |
431 | L<perlcall>. | |
432 | ||
433 | =cut | |
434 | */ | |
435 | ||
a0d0e21e LW |
436 | #define G_SCALAR 0 |
437 | #define G_ARRAY 1 | |
54310121 | 438 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 | 439 | |
864dbfa3 | 440 | /* extra flags for Perl_call_* routines */ |
a0d0e21e LW |
441 | #define G_DISCARD 2 /* Call FREETMPS. */ |
442 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ | |
443 | #define G_NOARGS 8 /* Don't construct a @_ array. */ | |
54310121 | 444 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 | 445 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
968b3946 | 446 | #define G_METHOD 64 /* Calling method. */ |
e336de0d | 447 | |
faef0170 HS |
448 | /* flag bits for PL_in_eval */ |
449 | #define EVAL_NULL 0 /* not in an eval */ | |
450 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ | |
451 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ | |
864dbfa3 | 452 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 | 453 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
faef0170 | 454 | |
e336de0d GS |
455 | /* Support for switching (stack and block) contexts. |
456 | * This ensures magic doesn't invalidate local stack and cx pointers. | |
457 | */ | |
458 | ||
e788e7d3 GS |
459 | #define PERLSI_UNKNOWN -1 |
460 | #define PERLSI_UNDEF 0 | |
461 | #define PERLSI_MAIN 1 | |
462 | #define PERLSI_MAGIC 2 | |
463 | #define PERLSI_SORT 3 | |
464 | #define PERLSI_SIGNAL 4 | |
465 | #define PERLSI_OVERLOAD 5 | |
466 | #define PERLSI_DESTROY 6 | |
467 | #define PERLSI_WARNHOOK 7 | |
468 | #define PERLSI_DIEHOOK 8 | |
469 | #define PERLSI_REQUIRE 9 | |
e336de0d GS |
470 | |
471 | struct stackinfo { | |
472 | AV * si_stack; /* stack for current runlevel */ | |
473 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ | |
474 | I32 si_cxix; /* current context index */ | |
475 | I32 si_cxmax; /* maximum allocated index */ | |
476 | I32 si_type; /* type of runlevel */ | |
477 | struct stackinfo * si_prev; | |
478 | struct stackinfo * si_next; | |
ce2f7c3b | 479 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d GS |
480 | * currently used only with DEBUGGING, |
481 | * but not #ifdef-ed for bincompat */ | |
482 | }; | |
483 | ||
484 | typedef struct stackinfo PERL_SI; | |
485 | ||
3280af22 NIS |
486 | #define cxstack (PL_curstackinfo->si_cxstack) |
487 | #define cxstack_ix (PL_curstackinfo->si_cxix) | |
488 | #define cxstack_max (PL_curstackinfo->si_cxmax) | |
e336de0d GS |
489 | |
490 | #ifdef DEBUGGING | |
ce2f7c3b GS |
491 | # define SET_MARK_OFFSET \ |
492 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack | |
e336de0d | 493 | #else |
ce2f7c3b | 494 | # define SET_MARK_OFFSET NOOP |
e336de0d GS |
495 | #endif |
496 | ||
d3acc0f7 | 497 | #define PUSHSTACKi(type) \ |
e336de0d | 498 | STMT_START { \ |
3280af22 | 499 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d GS |
500 | if (!next) { \ |
501 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ | |
3280af22 NIS |
502 | next->si_prev = PL_curstackinfo; \ |
503 | PL_curstackinfo->si_next = next; \ | |
e336de0d GS |
504 | } \ |
505 | next->si_type = type; \ | |
506 | next->si_cxix = -1; \ | |
507 | AvFILLp(next->si_stack) = 0; \ | |
3280af22 NIS |
508 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
509 | PL_curstackinfo = next; \ | |
ce2f7c3b | 510 | SET_MARK_OFFSET; \ |
e336de0d GS |
511 | } STMT_END |
512 | ||
e788e7d3 | 513 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 | 514 | |
3095d977 GS |
515 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
516 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ | |
d3acc0f7 | 517 | #define POPSTACK \ |
e336de0d | 518 | STMT_START { \ |
39644a26 | 519 | dSP; \ |
3280af22 | 520 | PERL_SI *prev = PL_curstackinfo->si_prev; \ |
e336de0d | 521 | if (!prev) { \ |
bf49b057 | 522 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d GS |
523 | my_exit(1); \ |
524 | } \ | |
3280af22 | 525 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d | 526 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 | 527 | PL_curstackinfo = prev; \ |
e336de0d GS |
528 | } STMT_END |
529 | ||
530 | #define POPSTACK_TO(s) \ | |
531 | STMT_START { \ | |
3280af22 | 532 | while (PL_curstack != s) { \ |
bac4b2ad | 533 | dounwind(-1); \ |
d3acc0f7 | 534 | POPSTACK; \ |
bac4b2ad | 535 | } \ |
e336de0d | 536 | } STMT_END |