Commit | Line | Data |
a0d0e21e |
1 | /* cop.h |
79072805 |
2 | * |
be3c0a43 |
3 | * Copyright (c) 1991-2002, Larry Wall |
79072805 |
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 |
8 | */ |
9 | |
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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 |
15 | char * cop_file; /* file name the following line # is from */ |
16 | #else |
11faa288 |
17 | HV * cop_stash; /* package line was compiled in */ |
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18 | GV * cop_filegv; /* file the following line # is from */ |
57843af0 |
19 | #endif |
a0d0e21e |
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 |
25 | }; |
26 | |
27 | #define Nullcop Null(COP*) |
28 | |
57843af0 |
29 | #ifdef USE_ITHREADS |
30 | # define CopFILE(c) ((c)->cop_file) |
31 | # define CopFILEGV(c) (CopFILE(c) \ |
32 | ? gv_fetchfile(CopFILE(c)) : Nullgv) |
083fcd59 |
33 | |
34 | #ifdef NETWARE |
35 | #define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) |
36 | #else |
37 | #define CopFILE_set(c,pv) ((c)->cop_file = savesharedpv(pv)) |
38 | #endif |
39 | |
57843af0 |
40 | # define CopFILESV(c) (CopFILE(c) \ |
41 | ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv) |
42 | # define CopFILEAV(c) (CopFILE(c) \ |
43 | ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav) |
57843af0 |
44 | # define CopSTASHPV(c) ((c)->cop_stashpv) |
083fcd59 |
45 | |
46 | #ifdef NETWARE |
47 | #define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = ((pv) ? savepv(pv) : Nullch)) |
48 | #else |
49 | #define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savesharedpv(pv)) |
50 | #endif |
51 | |
11faa288 |
52 | # define CopSTASH(c) (CopSTASHPV(c) \ |
53 | ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv) |
7b910cb8 |
54 | # define CopSTASH_set(c,hv) CopSTASHPV_set(c, (hv) ? HvNAME(hv) : Nullch) |
f4dd75d9 |
55 | # define CopSTASH_eq(c,hv) ((hv) \ |
ed094faf |
56 | && (CopSTASHPV(c) == HvNAME(hv) \ |
57 | || (CopSTASHPV(c) && HvNAME(hv) \ |
58 | && strEQ(CopSTASHPV(c), HvNAME(hv))))) |
083fcd59 |
59 | #ifdef NETWARE |
60 | #define CopSTASH_free(c) SAVECOPSTASH_FREE(c) |
61 | #else |
62 | #define CopSTASH_free(c) PerlMemShared_free(CopSTASHPV(c)) |
63 | #endif |
64 | |
65 | #ifdef NETWARE |
66 | #define CopFILE_free(c) SAVECOPFILE_FREE(c) |
67 | #else |
68 | #define CopFILE_free(c) (PerlMemShared_free(CopFILE(c)),(CopFILE(c) = Nullch)) |
69 | #endif |
57843af0 |
70 | #else |
71 | # define CopFILEGV(c) ((c)->cop_filegv) |
f4dd75d9 |
72 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv)) |
73 | # define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv)) |
57843af0 |
74 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) |
75 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) |
76 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) |
77 | # define CopSTASH(c) ((c)->cop_stash) |
f4dd75d9 |
78 | # define CopSTASH_set(c,hv) ((c)->cop_stash = (hv)) |
57843af0 |
79 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) |
f4dd75d9 |
80 | /* cop_stash is not refcounted */ |
81 | # define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD)) |
82 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv)) |
05ec9bb3 |
83 | # define CopSTASH_free(c) |
84 | # define CopFILE_free(c) (SvREFCNT_dec(CopFILEGV(c)),(CopFILEGV(c) = Nullgv)) |
85 | |
57843af0 |
86 | #endif /* USE_ITHREADS */ |
87 | |
ed094faf |
88 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
cc49e20b |
89 | #define CopLINE(c) ((c)->cop_line) |
57843af0 |
90 | #define CopLINE_inc(c) (++CopLINE(c)) |
91 | #define CopLINE_dec(c) (--CopLINE(c)) |
92 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) |
cc49e20b |
93 | |
248c2a4d |
94 | /* OutCopFILE() is CopFILE for output (caller, die, warn, etc.) */ |
95 | #ifdef MACOS_TRADITIONAL |
96 | # define OutCopFILE(c) MacPerl_MPWFileName(CopFILE(c)) |
97 | #else |
98 | # define OutCopFILE(c) CopFILE(c) |
99 | #endif |
100 | |
79072805 |
101 | /* |
102 | * Here we have some enormously heavy (or at least ponderous) wizardry. |
103 | */ |
104 | |
105 | /* subroutine context */ |
106 | struct block_sub { |
107 | CV * cv; |
108 | GV * gv; |
463ee0b2 |
109 | GV * dfoutgv; |
4d1ff10f |
110 | #ifndef USE_5005THREADS |
79072805 |
111 | AV * savearray; |
4d1ff10f |
112 | #endif /* USE_5005THREADS */ |
79072805 |
113 | AV * argarray; |
114 | U16 olddepth; |
115 | U8 hasargs; |
cd06dffe |
116 | U8 lval; /* XXX merge lval and hasargs? */ |
7032098e |
117 | SV ** oldcurpad; |
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118 | }; |
119 | |
120 | #define PUSHSUB(cx) \ |
121 | cx->blk_sub.cv = cv; \ |
eb160463 |
122 | cx->blk_sub.olddepth = (U16)CvDEPTH(cv); \ |
cd06dffe |
123 | cx->blk_sub.hasargs = hasargs; \ |
124 | cx->blk_sub.lval = PL_op->op_private & \ |
125 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); |
79072805 |
126 | |
127 | #define PUSHFORMAT(cx) \ |
128 | cx->blk_sub.cv = cv; \ |
129 | cx->blk_sub.gv = gv; \ |
4633a7c4 |
130 | cx->blk_sub.hasargs = 0; \ |
3280af22 |
131 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
4633a7c4 |
132 | (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) |
79072805 |
133 | |
4d1ff10f |
134 | #ifdef USE_5005THREADS |
7766f137 |
135 | # define POP_SAVEARRAY() NOOP |
6d4ff0d2 |
136 | #else |
7766f137 |
137 | # define POP_SAVEARRAY() \ |
6d4ff0d2 |
138 | STMT_START { \ |
3280af22 |
139 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
a8bba7fa |
140 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
6d4ff0d2 |
141 | } STMT_END |
4d1ff10f |
142 | #endif /* USE_5005THREADS */ |
6d4ff0d2 |
143 | |
ecf8e9dd |
144 | /* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't |
8e09340b |
145 | * leave any (a fast av_clear(ary), basically) */ |
146 | #define CLEAR_ARGARRAY(ary) \ |
147 | STMT_START { \ |
148 | AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \ |
149 | SvPVX(ary) = (char*)AvALLOC(ary); \ |
150 | AvFILLp(ary) = -1; \ |
151 | } STMT_END |
7766f137 |
152 | |
b0d9ce38 |
153 | #define POPSUB(cx,sv) \ |
154 | STMT_START { \ |
a8bba7fa |
155 | if (cx->blk_sub.hasargs) { \ |
7766f137 |
156 | POP_SAVEARRAY(); \ |
d8b46c1b |
157 | /* abandon @_ if it got reified */ \ |
a8bba7fa |
158 | if (AvREAL(cx->blk_sub.argarray)) { \ |
159 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ |
160 | SvREFCNT_dec(cx->blk_sub.argarray); \ |
161 | cx->blk_sub.argarray = newAV(); \ |
162 | av_extend(cx->blk_sub.argarray, fill); \ |
163 | AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ |
7032098e |
164 | cx->blk_sub.oldcurpad[0] = (SV*)cx->blk_sub.argarray; \ |
d8b46c1b |
165 | } \ |
7766f137 |
166 | else { \ |
8e09340b |
167 | CLEAR_ARGARRAY(cx->blk_sub.argarray); \ |
7766f137 |
168 | } \ |
79072805 |
169 | } \ |
b0d9ce38 |
170 | sv = (SV*)cx->blk_sub.cv; \ |
171 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ |
172 | sv = Nullsv; \ |
173 | } STMT_END |
174 | |
175 | #define LEAVESUB(sv) \ |
176 | STMT_START { \ |
177 | if (sv) \ |
178 | SvREFCNT_dec(sv); \ |
179 | } STMT_END |
79072805 |
180 | |
181 | #define POPFORMAT(cx) \ |
4633a7c4 |
182 | setdefout(cx->blk_sub.dfoutgv); \ |
183 | SvREFCNT_dec(cx->blk_sub.dfoutgv); |
79072805 |
184 | |
185 | /* eval context */ |
186 | struct block_eval { |
187 | I32 old_in_eval; |
188 | I32 old_op_type; |
0f79a09d |
189 | SV * old_namesv; |
79072805 |
190 | OP * old_eval_root; |
748a9306 |
191 | SV * cur_text; |
2090ab20 |
192 | CV * cv; |
79072805 |
193 | }; |
194 | |
8990e307 |
195 | #define PUSHEVAL(cx,n,fgv) \ |
0f79a09d |
196 | STMT_START { \ |
3280af22 |
197 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
a8bba7fa |
198 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
0f79a09d |
199 | cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \ |
a8bba7fa |
200 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
0f79a09d |
201 | cx->blk_eval.cur_text = PL_linestr; \ |
2090ab20 |
202 | cx->blk_eval.cv = Nullcv; /* set by doeval(), as applicable */ \ |
0f79a09d |
203 | } STMT_END |
79072805 |
204 | |
205 | #define POPEVAL(cx) \ |
0f79a09d |
206 | STMT_START { \ |
3280af22 |
207 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
79072805 |
208 | optype = cx->blk_eval.old_op_type; \ |
7766f137 |
209 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
0f79a09d |
210 | if (cx->blk_eval.old_namesv) \ |
211 | sv_2mortal(cx->blk_eval.old_namesv); \ |
212 | } STMT_END |
79072805 |
213 | |
214 | /* loop context */ |
215 | struct block_loop { |
216 | char * label; |
217 | I32 resetsp; |
218 | OP * redo_op; |
219 | OP * next_op; |
220 | OP * last_op; |
7766f137 |
221 | #ifdef USE_ITHREADS |
222 | void * iterdata; |
9e509370 |
223 | SV ** oldcurpad; |
7766f137 |
224 | #else |
79072805 |
225 | SV ** itervar; |
7766f137 |
226 | #endif |
79072805 |
227 | SV * itersave; |
5f05dabc |
228 | SV * iterlval; |
79072805 |
229 | AV * iterary; |
89ea2908 |
230 | IV iterix; |
231 | IV itermax; |
79072805 |
232 | }; |
233 | |
7766f137 |
234 | #ifdef USE_ITHREADS |
235 | # define CxITERVAR(c) \ |
236 | ((c)->blk_loop.iterdata \ |
237 | ? (CxPADLOOP(cx) \ |
e830ead6 |
238 | ? &((c)->blk_loop.oldcurpad)[INT2PTR(PADOFFSET, (c)->blk_loop.iterdata)] \ |
7766f137 |
239 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
240 | : (SV**)NULL) |
241 | # define CX_ITERDATA_SET(cx,idata) \ |
9e509370 |
242 | cx->blk_loop.oldcurpad = PL_curpad; \ |
155aba94 |
243 | if ((cx->blk_loop.iterdata = (idata))) \ |
d10edb75 |
244 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
245 | else \ |
246 | cx->blk_loop.itersave = Nullsv; |
7766f137 |
247 | #else |
248 | # define CxITERVAR(c) ((c)->blk_loop.itervar) |
249 | # define CX_ITERDATA_SET(cx,ivar) \ |
155aba94 |
250 | if ((cx->blk_loop.itervar = (SV**)(ivar))) \ |
d10edb75 |
251 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); \ |
252 | else \ |
253 | cx->blk_loop.itersave = Nullsv; |
7766f137 |
254 | #endif |
255 | |
256 | #define PUSHLOOP(cx, dat, s) \ |
38a230cb |
257 | cx->blk_loop.label = PL_curcop->cop_label; \ |
258 | cx->blk_loop.resetsp = s - PL_stack_base; \ |
79072805 |
259 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
260 | cx->blk_loop.next_op = cLOOP->op_nextop; \ |
261 | cx->blk_loop.last_op = cLOOP->op_lastop; \ |
44a8e56a |
262 | cx->blk_loop.iterlval = Nullsv; \ |
263 | cx->blk_loop.iterary = Nullav; \ |
7766f137 |
264 | cx->blk_loop.iterix = -1; \ |
265 | CX_ITERDATA_SET(cx,dat); |
79072805 |
266 | |
267 | #define POPLOOP(cx) \ |
a8bba7fa |
268 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
7766f137 |
269 | if (CxITERVAR(cx)) { \ |
270 | SV **s_v_p = CxITERVAR(cx); \ |
271 | sv_2mortal(*s_v_p); \ |
272 | *s_v_p = cx->blk_loop.itersave; \ |
44a8e56a |
273 | } \ |
a8bba7fa |
274 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
275 | SvREFCNT_dec(cx->blk_loop.iterary); |
79072805 |
276 | |
277 | /* context common to subroutines, evals and loops */ |
278 | struct block { |
279 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ |
280 | COP * blku_oldcop; /* old curcop pointer */ |
281 | I32 blku_oldretsp; /* return stack index */ |
282 | I32 blku_oldmarksp; /* mark stack index */ |
283 | I32 blku_oldscopesp; /* scope stack index */ |
284 | PMOP * blku_oldpm; /* values of pattern match vars */ |
285 | U8 blku_gimme; /* is this block running in list context? */ |
286 | |
287 | union { |
288 | struct block_sub blku_sub; |
289 | struct block_eval blku_eval; |
290 | struct block_loop blku_loop; |
291 | } blk_u; |
292 | }; |
293 | #define blk_oldsp cx_u.cx_blk.blku_oldsp |
294 | #define blk_oldcop cx_u.cx_blk.blku_oldcop |
295 | #define blk_oldretsp cx_u.cx_blk.blku_oldretsp |
296 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp |
297 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp |
298 | #define blk_oldpm cx_u.cx_blk.blku_oldpm |
299 | #define blk_gimme cx_u.cx_blk.blku_gimme |
300 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub |
301 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval |
302 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop |
303 | |
304 | /* Enter a block. */ |
8990e307 |
305 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 |
306 | cx->cx_type = t, \ |
3280af22 |
307 | cx->blk_oldsp = sp - PL_stack_base, \ |
308 | cx->blk_oldcop = PL_curcop, \ |
1aff0e91 |
309 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 |
310 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
1aff0e91 |
311 | cx->blk_oldretsp = PL_retstack_ix, \ |
3280af22 |
312 | cx->blk_oldpm = PL_curpm, \ |
eb160463 |
313 | cx->blk_gimme = (U8)gimme; \ |
bf49b057 |
314 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 |
315 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 |
316 | |
317 | /* Exit a block (RETURN and LAST). */ |
a0d0e21e |
318 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 |
319 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 |
320 | PL_curcop = cx->blk_oldcop, \ |
321 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
322 | PL_scopestack_ix = cx->blk_oldscopesp, \ |
323 | PL_retstack_ix = cx->blk_oldretsp, \ |
324 | pm = cx->blk_oldpm, \ |
325 | gimme = cx->blk_gimme; \ |
bf49b057 |
326 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c |
327 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 |
328 | |
329 | /* Continue a block elsewhere (NEXT and REDO). */ |
3280af22 |
330 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 |
331 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 |
332 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
333 | PL_scopestack_ix = cx->blk_oldscopesp, \ |
2158dd9b |
334 | PL_retstack_ix = cx->blk_oldretsp, \ |
335 | PL_curpm = cx->blk_oldpm |
79072805 |
336 | |
337 | /* substitution context */ |
338 | struct subst { |
339 | I32 sbu_iters; |
340 | I32 sbu_maxiters; |
22e551b9 |
341 | I32 sbu_rflags; |
4633a7c4 |
342 | I32 sbu_oldsave; |
71be2cbc |
343 | bool sbu_once; |
344 | bool sbu_rxtainted; |
79072805 |
345 | char * sbu_orig; |
346 | SV * sbu_dstr; |
347 | SV * sbu_targ; |
348 | char * sbu_s; |
349 | char * sbu_m; |
350 | char * sbu_strend; |
c90c0ff4 |
351 | void * sbu_rxres; |
c07a80fd |
352 | REGEXP * sbu_rx; |
79072805 |
353 | }; |
354 | #define sb_iters cx_u.cx_subst.sbu_iters |
355 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters |
22e551b9 |
356 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 |
357 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc |
358 | #define sb_once cx_u.cx_subst.sbu_once |
359 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted |
79072805 |
360 | #define sb_orig cx_u.cx_subst.sbu_orig |
361 | #define sb_dstr cx_u.cx_subst.sbu_dstr |
362 | #define sb_targ cx_u.cx_subst.sbu_targ |
363 | #define sb_s cx_u.cx_subst.sbu_s |
364 | #define sb_m cx_u.cx_subst.sbu_m |
365 | #define sb_strend cx_u.cx_subst.sbu_strend |
c90c0ff4 |
366 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd |
367 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 |
368 | |
369 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ |
370 | cx->sb_iters = iters, \ |
371 | cx->sb_maxiters = maxiters, \ |
22e551b9 |
372 | cx->sb_rflags = r_flags, \ |
4633a7c4 |
373 | cx->sb_oldsave = oldsave, \ |
71be2cbc |
374 | cx->sb_once = once, \ |
375 | cx->sb_rxtainted = rxtainted, \ |
79072805 |
376 | cx->sb_orig = orig, \ |
377 | cx->sb_dstr = dstr, \ |
378 | cx->sb_targ = targ, \ |
379 | cx->sb_s = s, \ |
380 | cx->sb_m = m, \ |
381 | cx->sb_strend = strend, \ |
c90c0ff4 |
382 | cx->sb_rxres = Null(void*), \ |
c07a80fd |
383 | cx->sb_rx = rx, \ |
c90c0ff4 |
384 | cx->cx_type = CXt_SUBST; \ |
385 | rxres_save(&cx->sb_rxres, rx) |
79072805 |
386 | |
c90c0ff4 |
387 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
388 | rxres_free(&cx->sb_rxres) |
79072805 |
389 | |
390 | struct context { |
6b35e009 |
391 | U32 cx_type; /* what kind of context this is */ |
79072805 |
392 | union { |
393 | struct block cx_blk; |
394 | struct subst cx_subst; |
395 | } cx_u; |
396 | }; |
6b35e009 |
397 | |
398 | #define CXTYPEMASK 0xff |
79072805 |
399 | #define CXt_NULL 0 |
400 | #define CXt_SUB 1 |
401 | #define CXt_EVAL 2 |
402 | #define CXt_LOOP 3 |
403 | #define CXt_SUBST 4 |
404 | #define CXt_BLOCK 5 |
7766f137 |
405 | #define CXt_FORMAT 6 |
79072805 |
406 | |
6b35e009 |
407 | /* private flags for CXt_EVAL */ |
408 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ |
1d76a5c3 |
409 | #define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */ |
6b35e009 |
410 | |
7766f137 |
411 | #ifdef USE_ITHREADS |
412 | /* private flags for CXt_LOOP */ |
413 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata |
414 | has pad offset; if not set, |
415 | iterdata holds GV* */ |
416 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ |
417 | == (CXt_LOOP|CXp_PADVAR)) |
418 | #endif |
419 | |
6b35e009 |
420 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7766f137 |
421 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
422 | == (CXt_EVAL|CXp_REAL)) |
1d76a5c3 |
423 | #define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \ |
424 | == (CXt_EVAL|CXp_TRYBLOCK)) |
6b35e009 |
425 | |
79072805 |
426 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
427 | |
ccfc67b7 |
428 | /* |
429 | =head1 "Gimme" Values |
430 | */ |
954c1994 |
431 | |
432 | /* |
433 | =for apidoc AmU||G_SCALAR |
434 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and |
435 | L<perlcall>. |
436 | |
437 | =for apidoc AmU||G_ARRAY |
91e74348 |
438 | Used to indicate list context. See C<GIMME_V>, C<GIMME> and |
954c1994 |
439 | L<perlcall>. |
440 | |
441 | =for apidoc AmU||G_VOID |
442 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. |
443 | |
444 | =for apidoc AmU||G_DISCARD |
445 | Indicates that arguments returned from a callback should be discarded. See |
446 | L<perlcall>. |
447 | |
448 | =for apidoc AmU||G_EVAL |
449 | |
450 | Used to force a Perl C<eval> wrapper around a callback. See |
451 | L<perlcall>. |
452 | |
453 | =for apidoc AmU||G_NOARGS |
454 | |
455 | Indicates that no arguments are being sent to a callback. See |
456 | L<perlcall>. |
457 | |
458 | =cut |
459 | */ |
460 | |
a0d0e21e |
461 | #define G_SCALAR 0 |
462 | #define G_ARRAY 1 |
54310121 |
463 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 |
464 | |
864dbfa3 |
465 | /* extra flags for Perl_call_* routines */ |
a0d0e21e |
466 | #define G_DISCARD 2 /* Call FREETMPS. */ |
467 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ |
468 | #define G_NOARGS 8 /* Don't construct a @_ array. */ |
54310121 |
469 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 |
470 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
968b3946 |
471 | #define G_METHOD 64 /* Calling method. */ |
e336de0d |
472 | |
faef0170 |
473 | /* flag bits for PL_in_eval */ |
474 | #define EVAL_NULL 0 /* not in an eval */ |
475 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ |
476 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ |
864dbfa3 |
477 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
6dc8a9e4 |
478 | #define EVAL_INREQUIRE 8 /* The code is being required. */ |
faef0170 |
479 | |
e336de0d |
480 | /* Support for switching (stack and block) contexts. |
481 | * This ensures magic doesn't invalidate local stack and cx pointers. |
482 | */ |
483 | |
e788e7d3 |
484 | #define PERLSI_UNKNOWN -1 |
485 | #define PERLSI_UNDEF 0 |
486 | #define PERLSI_MAIN 1 |
487 | #define PERLSI_MAGIC 2 |
488 | #define PERLSI_SORT 3 |
489 | #define PERLSI_SIGNAL 4 |
490 | #define PERLSI_OVERLOAD 5 |
491 | #define PERLSI_DESTROY 6 |
492 | #define PERLSI_WARNHOOK 7 |
493 | #define PERLSI_DIEHOOK 8 |
494 | #define PERLSI_REQUIRE 9 |
e336de0d |
495 | |
496 | struct stackinfo { |
497 | AV * si_stack; /* stack for current runlevel */ |
498 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ |
499 | I32 si_cxix; /* current context index */ |
500 | I32 si_cxmax; /* maximum allocated index */ |
501 | I32 si_type; /* type of runlevel */ |
502 | struct stackinfo * si_prev; |
503 | struct stackinfo * si_next; |
ce2f7c3b |
504 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d |
505 | * currently used only with DEBUGGING, |
506 | * but not #ifdef-ed for bincompat */ |
507 | }; |
508 | |
509 | typedef struct stackinfo PERL_SI; |
510 | |
3280af22 |
511 | #define cxstack (PL_curstackinfo->si_cxstack) |
512 | #define cxstack_ix (PL_curstackinfo->si_cxix) |
513 | #define cxstack_max (PL_curstackinfo->si_cxmax) |
e336de0d |
514 | |
515 | #ifdef DEBUGGING |
ce2f7c3b |
516 | # define SET_MARK_OFFSET \ |
517 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack |
e336de0d |
518 | #else |
ce2f7c3b |
519 | # define SET_MARK_OFFSET NOOP |
e336de0d |
520 | #endif |
521 | |
d3acc0f7 |
522 | #define PUSHSTACKi(type) \ |
e336de0d |
523 | STMT_START { \ |
3280af22 |
524 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d |
525 | if (!next) { \ |
526 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ |
3280af22 |
527 | next->si_prev = PL_curstackinfo; \ |
528 | PL_curstackinfo->si_next = next; \ |
e336de0d |
529 | } \ |
530 | next->si_type = type; \ |
531 | next->si_cxix = -1; \ |
532 | AvFILLp(next->si_stack) = 0; \ |
3280af22 |
533 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
534 | PL_curstackinfo = next; \ |
ce2f7c3b |
535 | SET_MARK_OFFSET; \ |
e336de0d |
536 | } STMT_END |
537 | |
e788e7d3 |
538 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 |
539 | |
3095d977 |
540 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
541 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ |
d3acc0f7 |
542 | #define POPSTACK \ |
e336de0d |
543 | STMT_START { \ |
39644a26 |
544 | dSP; \ |
3280af22 |
545 | PERL_SI *prev = PL_curstackinfo->si_prev; \ |
e336de0d |
546 | if (!prev) { \ |
bf49b057 |
547 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d |
548 | my_exit(1); \ |
549 | } \ |
3280af22 |
550 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d |
551 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 |
552 | PL_curstackinfo = prev; \ |
e336de0d |
553 | } STMT_END |
554 | |
555 | #define POPSTACK_TO(s) \ |
556 | STMT_START { \ |
3280af22 |
557 | while (PL_curstack != s) { \ |
bac4b2ad |
558 | dounwind(-1); \ |
d3acc0f7 |
559 | POPSTACK; \ |
bac4b2ad |
560 | } \ |
e336de0d |
561 | } STMT_END |