Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* cop.h |
79072805 | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, 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) | |
f4dd75d9 | 33 | # define CopFILE_set(c,pv) ((c)->cop_file = savepv(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) |
7b910cb8 | 39 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch)) |
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))))) | |
57843af0 GS |
47 | #else |
48 | # define CopFILEGV(c) ((c)->cop_filegv) | |
f4dd75d9 GS |
49 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
50 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) | |
57843af0 GS |
51 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) |
52 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) | |
53 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) | |
54 | # define CopSTASH(c) ((c)->cop_stash) | |
f4dd75d9 | 55 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
57843af0 | 56 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) |
f4dd75d9 GS |
57 | /* cop_stash is not refcounted */ |
58 | # define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) | |
59 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) | |
57843af0 GS |
60 | #endif /* USE_ITHREADS */ |
61 | ||
ed094faf | 62 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b | 63 | #define CopLINE(c) ((c)->cop_line) |
57843af0 GS |
64 | #define CopLINE_inc(c) (++CopLINE(c)) |
65 | #define CopLINE_dec(c) (--CopLINE(c)) | |
66 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) | |
cc49e20b | 67 | |
79072805 LW |
68 | /* |
69 | * Here we have some enormously heavy (or at least ponderous) wizardry. | |
70 | */ | |
71 | ||
72 | /* subroutine context */ | |
73 | struct block_sub { | |
74 | CV * cv; | |
75 | GV * gv; | |
463ee0b2 | 76 | GV * dfoutgv; |
4d1ff10f | 77 | #ifndef USE_5005THREADS |
79072805 | 78 | AV * savearray; |
4d1ff10f | 79 | #endif /* USE_5005THREADS */ |
79072805 LW |
80 | AV * argarray; |
81 | U16 olddepth; | |
82 | U8 hasargs; | |
cd06dffe | 83 | U8 lval; /* XXX merge lval and hasargs? */ |
7032098e | 84 | SV ** oldcurpad; |
79072805 LW |
85 | }; |
86 | ||
87 | #define PUSHSUB(cx) \ | |
88 | cx->blk_sub.cv = cv; \ | |
79072805 | 89 | cx->blk_sub.olddepth = CvDEPTH(cv); \ |
cd06dffe GS |
90 | cx->blk_sub.hasargs = hasargs; \ |
91 | cx->blk_sub.lval = PL_op->op_private & \ | |
92 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); | |
79072805 LW |
93 | |
94 | #define PUSHFORMAT(cx) \ | |
95 | cx->blk_sub.cv = cv; \ | |
96 | cx->blk_sub.gv = gv; \ | |
4633a7c4 | 97 | cx->blk_sub.hasargs = 0; \ |
3280af22 | 98 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
4633a7c4 | 99 | (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) |
79072805 | 100 | |
4d1ff10f | 101 | #ifdef USE_5005THREADS |
7766f137 | 102 | # define POP_SAVEARRAY() NOOP |
6d4ff0d2 | 103 | #else |
7766f137 | 104 | # define POP_SAVEARRAY() \ |
6d4ff0d2 | 105 | STMT_START { \ |
3280af22 | 106 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
a8bba7fa | 107 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
6d4ff0d2 | 108 | } STMT_END |
4d1ff10f | 109 | #endif /* USE_5005THREADS */ |
6d4ff0d2 | 110 | |
ecf8e9dd | 111 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b GS |
112 | * leave any (a fast av_clear(ary), basically) */ |
113 | #define CLEAR_ARGARRAY(ary) \ | |
114 | STMT_START { \ | |
115 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ | |
116 | SvPVX(ary) = (char*)AvALLOC(ary); \ | |
117 | AvFILLp(ary) = -1; \ | |
118 | } STMT_END | |
7766f137 | 119 | |
b0d9ce38 GS |
120 | #define POPSUB(cx,sv) \ |
121 | STMT_START { \ | |
a8bba7fa | 122 | if (cx->blk_sub.hasargs) { \ |
7766f137 | 123 | POP_SAVEARRAY(); \ |
d8b46c1b | 124 | /* abandon @_ if it got reified */ \ |
a8bba7fa GS |
125 | if (AvREAL(cx->blk_sub.argarray)) { \ |
126 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ | |
127 | SvREFCNT_dec(cx->blk_sub.argarray); \ | |
128 | cx->blk_sub.argarray = newAV(); \ | |
129 | av_extend(cx->blk_sub.argarray, fill); \ | |
130 | AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ | |
7032098e | 131 | cx->blk_sub.oldcurpad[0] = (SV*)cx->blk_sub.argarray; \ |
d8b46c1b | 132 | } \ |
7766f137 | 133 | else { \ |
8e09340b | 134 | CLEAR_ARGARRAY(cx->blk_sub.argarray); \ |
7766f137 | 135 | } \ |
79072805 | 136 | } \ |
b0d9ce38 GS |
137 | sv = (SV*)cx->blk_sub.cv; \ |
138 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ | |
139 | sv = Nullsv; \ | |
140 | } STMT_END | |
141 | ||
142 | #define LEAVESUB(sv) \ | |
143 | STMT_START { \ | |
144 | if (sv) \ | |
145 | SvREFCNT_dec(sv); \ | |
146 | } STMT_END | |
79072805 LW |
147 | |
148 | #define POPFORMAT(cx) \ | |
4633a7c4 LW |
149 | setdefout(cx->blk_sub.dfoutgv); \ |
150 | SvREFCNT_dec(cx->blk_sub.dfoutgv); | |
79072805 LW |
151 | |
152 | /* eval context */ | |
153 | struct block_eval { | |
154 | I32 old_in_eval; | |
155 | I32 old_op_type; | |
0f79a09d | 156 | SV * old_namesv; |
79072805 | 157 | OP * old_eval_root; |
748a9306 | 158 | SV * cur_text; |
2090ab20 | 159 | CV * cv; |
79072805 LW |
160 | }; |
161 | ||
8990e307 | 162 | #define PUSHEVAL(cx,n,fgv) \ |
0f79a09d | 163 | STMT_START { \ |
3280af22 | 164 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
a8bba7fa | 165 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
0f79a09d | 166 | cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \ |
a8bba7fa | 167 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
0f79a09d | 168 | cx->blk_eval.cur_text = PL_linestr; \ |
2090ab20 | 169 | cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \ |
0f79a09d | 170 | } STMT_END |
79072805 LW |
171 | |
172 | #define POPEVAL(cx) \ | |
0f79a09d | 173 | STMT_START { \ |
3280af22 | 174 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
79072805 | 175 | optype = cx->blk_eval.old_op_type; \ |
7766f137 | 176 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
0f79a09d GS |
177 | if (cx->blk_eval.old_namesv) \ |
178 | sv_2mortal(cx->blk_eval.old_namesv); \ | |
179 | } STMT_END | |
79072805 LW |
180 | |
181 | /* loop context */ | |
182 | struct block_loop { | |
183 | char * label; | |
184 | I32 resetsp; | |
185 | OP * redo_op; | |
186 | OP * next_op; | |
187 | OP * last_op; | |
7766f137 GS |
188 | #ifdef USE_ITHREADS |
189 | void * iterdata; | |
9e509370 | 190 | SV ** oldcurpad; |
7766f137 | 191 | #else |
79072805 | 192 | SV ** itervar; |
7766f137 | 193 | #endif |
79072805 | 194 | SV * itersave; |
5f05dabc | 195 | SV * iterlval; |
79072805 | 196 | AV * iterary; |
89ea2908 GA |
197 | IV iterix; |
198 | IV itermax; | |
79072805 LW |
199 | }; |
200 | ||
7766f137 GS |
201 | #ifdef USE_ITHREADS |
202 | # define CxITERVAR(c) \ | |
203 | ((c)->blk_loop.iterdata \ | |
204 | ? (CxPADLOOP(cx) \ | |
e830ead6 | 205 | ? &((c)->blk_loop.oldcurpad)[INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)] \ |
7766f137 GS |
206 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
207 | : (SV**)NULL) | |
208 | # define CX_ITERDATA_SET(cx,idata) \ | |
9e509370 | 209 | cx->blk_loop.oldcurpad = PL_curpad; \ |
155aba94 | 210 | if ((cx->blk_loop.iterdata = (idata))) \ |
7766f137 GS |
211 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
212 | #else | |
213 | # define CxITERVAR(c) ((c)->blk_loop.itervar) | |
214 | # define CX_ITERDATA_SET(cx,ivar) \ | |
155aba94 | 215 | if ((cx->blk_loop.itervar = (SV**)(ivar))) \ |
7766f137 GS |
216 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
217 | #endif | |
218 | ||
219 | #define PUSHLOOP(cx, dat, s) \ | |
38a230cb GS |
220 | cx->blk_loop.label = PL_curcop->cop_label; \ |
221 | cx->blk_loop.resetsp = s - PL_stack_base; \ | |
79072805 LW |
222 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
223 | cx->blk_loop.next_op = cLOOP->op_nextop; \ | |
224 | cx->blk_loop.last_op = cLOOP->op_lastop; \ | |
44a8e56a | 225 | cx->blk_loop.iterlval = Nullsv; \ |
226 | cx->blk_loop.iterary = Nullav; \ | |
7766f137 GS |
227 | cx->blk_loop.iterix = -1; \ |
228 | CX_ITERDATA_SET(cx,dat); | |
79072805 LW |
229 | |
230 | #define POPLOOP(cx) \ | |
a8bba7fa | 231 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
7766f137 GS |
232 | if (CxITERVAR(cx)) { \ |
233 | SV **s_v_p = CxITERVAR(cx); \ | |
234 | sv_2mortal(*s_v_p); \ | |
235 | *s_v_p = cx->blk_loop.itersave; \ | |
44a8e56a | 236 | } \ |
a8bba7fa GS |
237 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
238 | SvREFCNT_dec(cx->blk_loop.iterary); | |
79072805 LW |
239 | |
240 | /* context common to subroutines, evals and loops */ | |
241 | struct block { | |
242 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ | |
243 | COP * blku_oldcop; /* old curcop pointer */ | |
244 | I32 blku_oldretsp; /* return stack index */ | |
245 | I32 blku_oldmarksp; /* mark stack index */ | |
246 | I32 blku_oldscopesp; /* scope stack index */ | |
247 | PMOP * blku_oldpm; /* values of pattern match vars */ | |
248 | U8 blku_gimme; /* is this block running in list context? */ | |
249 | ||
250 | union { | |
251 | struct block_sub blku_sub; | |
252 | struct block_eval blku_eval; | |
253 | struct block_loop blku_loop; | |
254 | } blk_u; | |
255 | }; | |
256 | #define blk_oldsp cx_u.cx_blk.blku_oldsp | |
257 | #define blk_oldcop cx_u.cx_blk.blku_oldcop | |
258 | #define blk_oldretsp cx_u.cx_blk.blku_oldretsp | |
259 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp | |
260 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp | |
261 | #define blk_oldpm cx_u.cx_blk.blku_oldpm | |
262 | #define blk_gimme cx_u.cx_blk.blku_gimme | |
263 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub | |
264 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval | |
265 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop | |
266 | ||
267 | /* Enter a block. */ | |
8990e307 | 268 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 | 269 | cx->cx_type = t, \ |
3280af22 NIS |
270 | cx->blk_oldsp = sp - PL_stack_base, \ |
271 | cx->blk_oldcop = PL_curcop, \ | |
1aff0e91 | 272 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 | 273 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
1aff0e91 | 274 | cx->blk_oldretsp = PL_retstack_ix, \ |
3280af22 | 275 | cx->blk_oldpm = PL_curpm, \ |
79072805 | 276 | cx->blk_gimme = gimme; \ |
bf49b057 | 277 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 | 278 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
279 | |
280 | /* Exit a block (RETURN and LAST). */ | |
a0d0e21e | 281 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 | 282 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
283 | PL_curcop = cx->blk_oldcop, \ |
284 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ | |
285 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
286 | PL_retstack_ix = cx->blk_oldretsp, \ | |
287 | pm = cx->blk_oldpm, \ | |
288 | gimme = cx->blk_gimme; \ | |
bf49b057 | 289 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c | 290 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 LW |
291 | |
292 | /* Continue a block elsewhere (NEXT and REDO). */ | |
3280af22 | 293 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 | 294 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 NIS |
295 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
296 | PL_scopestack_ix = cx->blk_oldscopesp, \ | |
2158dd9b GS |
297 | PL_retstack_ix = cx->blk_oldretsp, \ |
298 | PL_curpm = cx->blk_oldpm | |
79072805 LW |
299 | |
300 | /* substitution context */ | |
301 | struct subst { | |
302 | I32 sbu_iters; | |
303 | I32 sbu_maxiters; | |
22e551b9 | 304 | I32 sbu_rflags; |
4633a7c4 | 305 | I32 sbu_oldsave; |
71be2cbc | 306 | bool sbu_once; |
307 | bool sbu_rxtainted; | |
79072805 LW |
308 | char * sbu_orig; |
309 | SV * sbu_dstr; | |
310 | SV * sbu_targ; | |
311 | char * sbu_s; | |
312 | char * sbu_m; | |
313 | char * sbu_strend; | |
c90c0ff4 | 314 | void * sbu_rxres; |
c07a80fd | 315 | REGEXP * sbu_rx; |
79072805 LW |
316 | }; |
317 | #define sb_iters cx_u.cx_subst.sbu_iters | |
318 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters | |
22e551b9 | 319 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 | 320 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc | 321 | #define sb_once cx_u.cx_subst.sbu_once |
322 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted | |
79072805 LW |
323 | #define sb_orig cx_u.cx_subst.sbu_orig |
324 | #define sb_dstr cx_u.cx_subst.sbu_dstr | |
325 | #define sb_targ cx_u.cx_subst.sbu_targ | |
326 | #define sb_s cx_u.cx_subst.sbu_s | |
327 | #define sb_m cx_u.cx_subst.sbu_m | |
328 | #define sb_strend cx_u.cx_subst.sbu_strend | |
c90c0ff4 | 329 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd | 330 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 LW |
331 | |
332 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ | |
333 | cx->sb_iters = iters, \ | |
334 | cx->sb_maxiters = maxiters, \ | |
22e551b9 | 335 | cx->sb_rflags = r_flags, \ |
4633a7c4 | 336 | cx->sb_oldsave = oldsave, \ |
71be2cbc | 337 | cx->sb_once = once, \ |
338 | cx->sb_rxtainted = rxtainted, \ | |
79072805 LW |
339 | cx->sb_orig = orig, \ |
340 | cx->sb_dstr = dstr, \ | |
341 | cx->sb_targ = targ, \ | |
342 | cx->sb_s = s, \ | |
343 | cx->sb_m = m, \ | |
344 | cx->sb_strend = strend, \ | |
c90c0ff4 | 345 | cx->sb_rxres = Null(void*), \ |
c07a80fd | 346 | cx->sb_rx = rx, \ |
c90c0ff4 | 347 | cx->cx_type = CXt_SUBST; \ |
348 | rxres_save(&cx->sb_rxres, rx) | |
79072805 | 349 | |
c90c0ff4 | 350 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
351 | rxres_free(&cx->sb_rxres) | |
79072805 LW |
352 | |
353 | struct context { | |
6b35e009 | 354 | U32 cx_type; /* what kind of context this is */ |
79072805 LW |
355 | union { |
356 | struct block cx_blk; | |
357 | struct subst cx_subst; | |
358 | } cx_u; | |
359 | }; | |
6b35e009 GS |
360 | |
361 | #define CXTYPEMASK 0xff | |
79072805 LW |
362 | #define CXt_NULL 0 |
363 | #define CXt_SUB 1 | |
364 | #define CXt_EVAL 2 | |
365 | #define CXt_LOOP 3 | |
366 | #define CXt_SUBST 4 | |
367 | #define CXt_BLOCK 5 | |
7766f137 | 368 | #define CXt_FORMAT 6 |
79072805 | 369 | |
6b35e009 GS |
370 | /* private flags for CXt_EVAL */ |
371 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ | |
1d76a5c3 | 372 | #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ |
6b35e009 | 373 | |
7766f137 GS |
374 | #ifdef USE_ITHREADS |
375 | /* private flags for CXt_LOOP */ | |
376 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata | |
377 | has pad offset; if not set, | |
378 | iterdata holds GV* */ | |
379 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ | |
380 | == (CXt_LOOP|CXp_PADVAR)) | |
381 | #endif | |
382 | ||
6b35e009 | 383 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7766f137 GS |
384 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
385 | == (CXt_EVAL|CXp_REAL)) | |
1d76a5c3 GS |
386 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ |
387 | == (CXt_EVAL|CXp_TRYBLOCK)) | |
6b35e009 | 388 | |
79072805 LW |
389 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
390 | ||
391 | /* "gimme" values */ | |
954c1994 GS |
392 | |
393 | /* | |
394 | =for apidoc AmU||G_SCALAR | |
395 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and | |
396 | L<perlcall>. | |
397 | ||
398 | =for apidoc AmU||G_ARRAY | |
91e74348 | 399 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 GS |
400 | L<perlcall>. |
401 | ||
402 | =for apidoc AmU||G_VOID | |
403 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. | |
404 | ||
405 | =for apidoc AmU||G_DISCARD | |
406 | Indicates that arguments returned from a callback should be discarded. See | |
407 | L<perlcall>. | |
408 | ||
409 | =for apidoc AmU||G_EVAL | |
410 | ||
411 | Used to force a Perl C<eval> wrapper around a callback. See | |
412 | L<perlcall>. | |
413 | ||
414 | =for apidoc AmU||G_NOARGS | |
415 | ||
416 | Indicates that no arguments are being sent to a callback. See | |
417 | L<perlcall>. | |
418 | ||
419 | =cut | |
420 | */ | |
421 | ||
a0d0e21e LW |
422 | #define G_SCALAR 0 |
423 | #define G_ARRAY 1 | |
54310121 | 424 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 | 425 | |
864dbfa3 | 426 | /* extra flags for Perl_call_* routines */ |
a0d0e21e LW |
427 | #define G_DISCARD 2 /* Call FREETMPS. */ |
428 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ | |
429 | #define G_NOARGS 8 /* Don't construct a @_ array. */ | |
54310121 | 430 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 | 431 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
968b3946 | 432 | #define G_METHOD 64 /* Calling method. */ |
e336de0d | 433 | |
faef0170 HS |
434 | /* flag bits for PL_in_eval */ |
435 | #define EVAL_NULL 0 /* not in an eval */ | |
436 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ | |
437 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ | |
864dbfa3 | 438 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 | 439 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
faef0170 | 440 | |
e336de0d GS |
441 | /* Support for switching (stack and block) contexts. |
442 | * This ensures magic doesn't invalidate local stack and cx pointers. | |
443 | */ | |
444 | ||
e788e7d3 GS |
445 | #define PERLSI_UNKNOWN -1 |
446 | #define PERLSI_UNDEF 0 | |
447 | #define PERLSI_MAIN 1 | |
448 | #define PERLSI_MAGIC 2 | |
449 | #define PERLSI_SORT 3 | |
450 | #define PERLSI_SIGNAL 4 | |
451 | #define PERLSI_OVERLOAD 5 | |
452 | #define PERLSI_DESTROY 6 | |
453 | #define PERLSI_WARNHOOK 7 | |
454 | #define PERLSI_DIEHOOK 8 | |
455 | #define PERLSI_REQUIRE 9 | |
e336de0d GS |
456 | |
457 | struct stackinfo { | |
458 | AV * si_stack; /* stack for current runlevel */ | |
459 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ | |
460 | I32 si_cxix; /* current context index */ | |
461 | I32 si_cxmax; /* maximum allocated index */ | |
462 | I32 si_type; /* type of runlevel */ | |
463 | struct stackinfo * si_prev; | |
464 | struct stackinfo * si_next; | |
ce2f7c3b | 465 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d GS |
466 | * currently used only with DEBUGGING, |
467 | * but not #ifdef-ed for bincompat */ | |
468 | }; | |
469 | ||
470 | typedef struct stackinfo PERL_SI; | |
471 | ||
3280af22 NIS |
472 | #define cxstack (PL_curstackinfo->si_cxstack) |
473 | #define cxstack_ix (PL_curstackinfo->si_cxix) | |
474 | #define cxstack_max (PL_curstackinfo->si_cxmax) | |
e336de0d GS |
475 | |
476 | #ifdef DEBUGGING | |
ce2f7c3b GS |
477 | # define SET_MARK_OFFSET \ |
478 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack | |
e336de0d | 479 | #else |
ce2f7c3b | 480 | # define SET_MARK_OFFSET NOOP |
e336de0d GS |
481 | #endif |
482 | ||
d3acc0f7 | 483 | #define PUSHSTACKi(type) \ |
e336de0d | 484 | STMT_START { \ |
3280af22 | 485 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d GS |
486 | if (!next) { \ |
487 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ | |
3280af22 NIS |
488 | next->si_prev = PL_curstackinfo; \ |
489 | PL_curstackinfo->si_next = next; \ | |
e336de0d GS |
490 | } \ |
491 | next->si_type = type; \ | |
492 | next->si_cxix = -1; \ | |
493 | AvFILLp(next->si_stack) = 0; \ | |
3280af22 NIS |
494 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
495 | PL_curstackinfo = next; \ | |
ce2f7c3b | 496 | SET_MARK_OFFSET; \ |
e336de0d GS |
497 | } STMT_END |
498 | ||
e788e7d3 | 499 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 | 500 | |
3095d977 GS |
501 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
502 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ | |
d3acc0f7 | 503 | #define POPSTACK \ |
e336de0d | 504 | STMT_START { \ |
39644a26 | 505 | dSP; \ |
3280af22 | 506 | PERL_SI *prev = PL_curstackinfo->si_prev; \ |
e336de0d | 507 | if (!prev) { \ |
bf49b057 | 508 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d GS |
509 | my_exit(1); \ |
510 | } \ | |
3280af22 | 511 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d | 512 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 | 513 | PL_curstackinfo = prev; \ |
e336de0d GS |
514 | } STMT_END |
515 | ||
516 | #define POPSTACK_TO(s) \ | |
517 | STMT_START { \ | |
3280af22 | 518 | while (PL_curstack != s) { \ |
bac4b2ad | 519 | dounwind(-1); \ |
d3acc0f7 | 520 | POPSTACK; \ |
bac4b2ad | 521 | } \ |
e336de0d | 522 | } STMT_END |