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[p5sagit/p5-mst-13.2.git] / cop.h
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a0d0e21e 1/* cop.h
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, 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
79072805 10struct 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 */
79072805 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 */
79072805 24};
25
26#define Nullcop Null(COP*)
27
57843af0 28#ifdef USE_ITHREADS
29# define CopFILE(c) ((c)->cop_file)
30# define CopFILEGV(c) (CopFILE(c) \
31 ? gv_fetchfile(CopFILE(c)) : Nullgv)
f4dd75d9 32# define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv))
57843af0 33# define CopFILESV(c) (CopFILE(c) \
34 ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv)
35# define CopFILEAV(c) (CopFILE(c) \
36 ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav)
57843af0 37# define CopSTASHPV(c) ((c)->cop_stashpv)
f4dd75d9 38# define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savepv(pv))
11faa288 39# define CopSTASH(c) (CopSTASHPV(c) \
40 ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv)
41# define CopSTASH_set(c,hv) CopSTASHPV_set(c, HvNAME(hv))
f4dd75d9 42# define CopSTASH_eq(c,hv) ((hv) \
ed094faf 43 && (CopSTASHPV(c) == HvNAME(hv) \
44 || (CopSTASHPV(c) && HvNAME(hv) \
45 && strEQ(CopSTASHPV(c), HvNAME(hv)))))
57843af0 46#else
47# define CopFILEGV(c) ((c)->cop_filegv)
f4dd75d9 48# define CopFILEGV_set(c,gv) ((c)->cop_filegv = (GV*)SvREFCNT_inc(gv))
49# define CopFILE_set(c,pv) CopFILEGV_set((c), gv_fetchfile(pv))
57843af0 50# define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv)
51# define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav)
52# define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch)
53# define CopSTASH(c) ((c)->cop_stash)
f4dd75d9 54# define CopSTASH_set(c,hv) ((c)->cop_stash = (hv))
57843af0 55# define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch)
f4dd75d9 56 /* cop_stash is not refcounted */
57# define CopSTASHPV_set(c,pv) CopSTASH_set((c), gv_stashpv(pv,GV_ADD))
58# define CopSTASH_eq(c,hv) (CopSTASH(c) == (hv))
57843af0 59#endif /* USE_ITHREADS */
60
ed094faf 61#define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv))
cc49e20b 62#define CopLINE(c) ((c)->cop_line)
57843af0 63#define CopLINE_inc(c) (++CopLINE(c))
64#define CopLINE_dec(c) (--CopLINE(c))
65#define CopLINE_set(c,l) (CopLINE(c) = (l))
cc49e20b 66
79072805 67/*
68 * Here we have some enormously heavy (or at least ponderous) wizardry.
69 */
70
71/* subroutine context */
72struct block_sub {
73 CV * cv;
74 GV * gv;
463ee0b2 75 GV * dfoutgv;
6d4ff0d2 76#ifndef USE_THREADS
79072805 77 AV * savearray;
6d4ff0d2 78#endif /* USE_THREADS */
79072805 79 AV * argarray;
80 U16 olddepth;
81 U8 hasargs;
cd06dffe 82 U8 lval; /* XXX merge lval and hasargs? */
7032098e 83 SV ** oldcurpad;
79072805 84};
85
86#define PUSHSUB(cx) \
87 cx->blk_sub.cv = cv; \
79072805 88 cx->blk_sub.olddepth = CvDEPTH(cv); \
cd06dffe 89 cx->blk_sub.hasargs = hasargs; \
90 cx->blk_sub.lval = PL_op->op_private & \
91 (OPpLVAL_INTRO|OPpENTERSUB_INARGS);
79072805 92
93#define PUSHFORMAT(cx) \
94 cx->blk_sub.cv = cv; \
95 cx->blk_sub.gv = gv; \
4633a7c4 96 cx->blk_sub.hasargs = 0; \
3280af22 97 cx->blk_sub.dfoutgv = PL_defoutgv; \
4633a7c4 98 (void)SvREFCNT_inc(cx->blk_sub.dfoutgv)
79072805 99
6d4ff0d2 100#ifdef USE_THREADS
7766f137 101# define POP_SAVEARRAY() NOOP
6d4ff0d2 102#else
7766f137 103# define POP_SAVEARRAY() \
6d4ff0d2 104 STMT_START { \
3280af22 105 SvREFCNT_dec(GvAV(PL_defgv)); \
a8bba7fa 106 GvAV(PL_defgv) = cx->blk_sub.savearray; \
6d4ff0d2 107 } STMT_END
108#endif /* USE_THREADS */
109
ecf8e9dd 110/* junk in @_ spells trouble when cloning CVs and in pp_caller(), so don't
8e09340b 111 * leave any (a fast av_clear(ary), basically) */
112#define CLEAR_ARGARRAY(ary) \
113 STMT_START { \
114 AvMAX(ary) += AvARRAY(ary) - AvALLOC(ary); \
115 SvPVX(ary) = (char*)AvALLOC(ary); \
116 AvFILLp(ary) = -1; \
117 } STMT_END
7766f137 118
b0d9ce38 119#define POPSUB(cx,sv) \
120 STMT_START { \
a8bba7fa 121 if (cx->blk_sub.hasargs) { \
7766f137 122 POP_SAVEARRAY(); \
d8b46c1b 123 /* abandon @_ if it got reified */ \
a8bba7fa 124 if (AvREAL(cx->blk_sub.argarray)) { \
125 SSize_t fill = AvFILLp(cx->blk_sub.argarray); \
126 SvREFCNT_dec(cx->blk_sub.argarray); \
127 cx->blk_sub.argarray = newAV(); \
128 av_extend(cx->blk_sub.argarray, fill); \
129 AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \
7032098e 130 cx->blk_sub.oldcurpad[0] = (SV*)cx->blk_sub.argarray; \
d8b46c1b 131 } \
7766f137 132 else { \
8e09340b 133 CLEAR_ARGARRAY(cx->blk_sub.argarray); \
7766f137 134 } \
79072805 135 } \
b0d9ce38 136 sv = (SV*)cx->blk_sub.cv; \
137 if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \
138 sv = Nullsv; \
139 } STMT_END
140
141#define LEAVESUB(sv) \
142 STMT_START { \
143 if (sv) \
144 SvREFCNT_dec(sv); \
145 } STMT_END
79072805 146
147#define POPFORMAT(cx) \
4633a7c4 148 setdefout(cx->blk_sub.dfoutgv); \
149 SvREFCNT_dec(cx->blk_sub.dfoutgv);
79072805 150
151/* eval context */
152struct block_eval {
153 I32 old_in_eval;
154 I32 old_op_type;
0f79a09d 155 SV * old_namesv;
79072805 156 OP * old_eval_root;
748a9306 157 SV * cur_text;
79072805 158};
159
8990e307 160#define PUSHEVAL(cx,n,fgv) \
0f79a09d 161 STMT_START { \
3280af22 162 cx->blk_eval.old_in_eval = PL_in_eval; \
a8bba7fa 163 cx->blk_eval.old_op_type = PL_op->op_type; \
0f79a09d 164 cx->blk_eval.old_namesv = (n ? newSVpv(n,0) : Nullsv); \
a8bba7fa 165 cx->blk_eval.old_eval_root = PL_eval_root; \
0f79a09d 166 cx->blk_eval.cur_text = PL_linestr; \
167 } STMT_END
79072805 168
169#define POPEVAL(cx) \
0f79a09d 170 STMT_START { \
3280af22 171 PL_in_eval = cx->blk_eval.old_in_eval; \
79072805 172 optype = cx->blk_eval.old_op_type; \
7766f137 173 PL_eval_root = cx->blk_eval.old_eval_root; \
0f79a09d 174 if (cx->blk_eval.old_namesv) \
175 sv_2mortal(cx->blk_eval.old_namesv); \
176 } STMT_END
79072805 177
178/* loop context */
179struct block_loop {
180 char * label;
181 I32 resetsp;
182 OP * redo_op;
183 OP * next_op;
184 OP * last_op;
7766f137 185#ifdef USE_ITHREADS
186 void * iterdata;
9e509370 187 SV ** oldcurpad;
7766f137 188#else
79072805 189 SV ** itervar;
7766f137 190#endif
79072805 191 SV * itersave;
5f05dabc 192 SV * iterlval;
79072805 193 AV * iterary;
89ea2908 194 IV iterix;
195 IV itermax;
79072805 196};
197
7766f137 198#ifdef USE_ITHREADS
199# define CxITERVAR(c) \
200 ((c)->blk_loop.iterdata \
201 ? (CxPADLOOP(cx) \
9e509370 202 ? &((c)->blk_loop.oldcurpad)[(PADOFFSET)(c)->blk_loop.iterdata] \
7766f137 203 : &GvSV((GV*)(c)->blk_loop.iterdata)) \
204 : (SV**)NULL)
205# define CX_ITERDATA_SET(cx,idata) \
9e509370 206 cx->blk_loop.oldcurpad = PL_curpad; \
155aba94 207 if ((cx->blk_loop.iterdata = (idata))) \
7766f137 208 cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx));
209#else
210# define CxITERVAR(c) ((c)->blk_loop.itervar)
211# define CX_ITERDATA_SET(cx,ivar) \
155aba94 212 if ((cx->blk_loop.itervar = (SV**)(ivar))) \
7766f137 213 cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx));
214#endif
215
216#define PUSHLOOP(cx, dat, s) \
38a230cb 217 cx->blk_loop.label = PL_curcop->cop_label; \
218 cx->blk_loop.resetsp = s - PL_stack_base; \
79072805 219 cx->blk_loop.redo_op = cLOOP->op_redoop; \
220 cx->blk_loop.next_op = cLOOP->op_nextop; \
221 cx->blk_loop.last_op = cLOOP->op_lastop; \
44a8e56a 222 cx->blk_loop.iterlval = Nullsv; \
223 cx->blk_loop.iterary = Nullav; \
7766f137 224 cx->blk_loop.iterix = -1; \
225 CX_ITERDATA_SET(cx,dat);
79072805 226
227#define POPLOOP(cx) \
a8bba7fa 228 SvREFCNT_dec(cx->blk_loop.iterlval); \
7766f137 229 if (CxITERVAR(cx)) { \
230 SV **s_v_p = CxITERVAR(cx); \
231 sv_2mortal(*s_v_p); \
232 *s_v_p = cx->blk_loop.itersave; \
44a8e56a 233 } \
a8bba7fa 234 if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\
235 SvREFCNT_dec(cx->blk_loop.iterary);
79072805 236
237/* context common to subroutines, evals and loops */
238struct block {
239 I32 blku_oldsp; /* stack pointer to copy stuff down to */
240 COP * blku_oldcop; /* old curcop pointer */
241 I32 blku_oldretsp; /* return stack index */
242 I32 blku_oldmarksp; /* mark stack index */
243 I32 blku_oldscopesp; /* scope stack index */
244 PMOP * blku_oldpm; /* values of pattern match vars */
245 U8 blku_gimme; /* is this block running in list context? */
246
247 union {
248 struct block_sub blku_sub;
249 struct block_eval blku_eval;
250 struct block_loop blku_loop;
251 } blk_u;
252};
253#define blk_oldsp cx_u.cx_blk.blku_oldsp
254#define blk_oldcop cx_u.cx_blk.blku_oldcop
255#define blk_oldretsp cx_u.cx_blk.blku_oldretsp
256#define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp
257#define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp
258#define blk_oldpm cx_u.cx_blk.blku_oldpm
259#define blk_gimme cx_u.cx_blk.blku_gimme
260#define blk_sub cx_u.cx_blk.blk_u.blku_sub
261#define blk_eval cx_u.cx_blk.blk_u.blku_eval
262#define blk_loop cx_u.cx_blk.blk_u.blku_loop
263
264/* Enter a block. */
8990e307 265#define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \
79072805 266 cx->cx_type = t, \
3280af22 267 cx->blk_oldsp = sp - PL_stack_base, \
268 cx->blk_oldcop = PL_curcop, \
1aff0e91 269 cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \
3280af22 270 cx->blk_oldscopesp = PL_scopestack_ix, \
1aff0e91 271 cx->blk_oldretsp = PL_retstack_ix, \
3280af22 272 cx->blk_oldpm = PL_curpm, \
79072805 273 cx->blk_gimme = gimme; \
bf49b057 274 DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \
1aff0e91 275 (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); )
79072805 276
277/* Exit a block (RETURN and LAST). */
a0d0e21e 278#define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \
1aff0e91 279 newsp = PL_stack_base + cx->blk_oldsp, \
3280af22 280 PL_curcop = cx->blk_oldcop, \
281 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
282 PL_scopestack_ix = cx->blk_oldscopesp, \
283 PL_retstack_ix = cx->blk_oldretsp, \
284 pm = cx->blk_oldpm, \
285 gimme = cx->blk_gimme; \
bf49b057 286 DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \
22c35a8c 287 (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); )
79072805 288
289/* Continue a block elsewhere (NEXT and REDO). */
3280af22 290#define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \
1aff0e91 291 PL_stack_sp = PL_stack_base + cx->blk_oldsp, \
3280af22 292 PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \
293 PL_scopestack_ix = cx->blk_oldscopesp, \
2158dd9b 294 PL_retstack_ix = cx->blk_oldretsp, \
295 PL_curpm = cx->blk_oldpm
79072805 296
297/* substitution context */
298struct subst {
299 I32 sbu_iters;
300 I32 sbu_maxiters;
22e551b9 301 I32 sbu_rflags;
4633a7c4 302 I32 sbu_oldsave;
71be2cbc 303 bool sbu_once;
304 bool sbu_rxtainted;
79072805 305 char * sbu_orig;
306 SV * sbu_dstr;
307 SV * sbu_targ;
308 char * sbu_s;
309 char * sbu_m;
310 char * sbu_strend;
c90c0ff4 311 void * sbu_rxres;
c07a80fd 312 REGEXP * sbu_rx;
79072805 313};
314#define sb_iters cx_u.cx_subst.sbu_iters
315#define sb_maxiters cx_u.cx_subst.sbu_maxiters
22e551b9 316#define sb_rflags cx_u.cx_subst.sbu_rflags
4633a7c4 317#define sb_oldsave cx_u.cx_subst.sbu_oldsave
71be2cbc 318#define sb_once cx_u.cx_subst.sbu_once
319#define sb_rxtainted cx_u.cx_subst.sbu_rxtainted
79072805 320#define sb_orig cx_u.cx_subst.sbu_orig
321#define sb_dstr cx_u.cx_subst.sbu_dstr
322#define sb_targ cx_u.cx_subst.sbu_targ
323#define sb_s cx_u.cx_subst.sbu_s
324#define sb_m cx_u.cx_subst.sbu_m
325#define sb_strend cx_u.cx_subst.sbu_strend
c90c0ff4 326#define sb_rxres cx_u.cx_subst.sbu_rxres
c07a80fd 327#define sb_rx cx_u.cx_subst.sbu_rx
79072805 328
329#define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \
330 cx->sb_iters = iters, \
331 cx->sb_maxiters = maxiters, \
22e551b9 332 cx->sb_rflags = r_flags, \
4633a7c4 333 cx->sb_oldsave = oldsave, \
71be2cbc 334 cx->sb_once = once, \
335 cx->sb_rxtainted = rxtainted, \
79072805 336 cx->sb_orig = orig, \
337 cx->sb_dstr = dstr, \
338 cx->sb_targ = targ, \
339 cx->sb_s = s, \
340 cx->sb_m = m, \
341 cx->sb_strend = strend, \
c90c0ff4 342 cx->sb_rxres = Null(void*), \
c07a80fd 343 cx->sb_rx = rx, \
c90c0ff4 344 cx->cx_type = CXt_SUBST; \
345 rxres_save(&cx->sb_rxres, rx)
79072805 346
c90c0ff4 347#define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \
348 rxres_free(&cx->sb_rxres)
79072805 349
350struct context {
6b35e009 351 U32 cx_type; /* what kind of context this is */
79072805 352 union {
353 struct block cx_blk;
354 struct subst cx_subst;
355 } cx_u;
356};
6b35e009 357
358#define CXTYPEMASK 0xff
79072805 359#define CXt_NULL 0
360#define CXt_SUB 1
361#define CXt_EVAL 2
362#define CXt_LOOP 3
363#define CXt_SUBST 4
364#define CXt_BLOCK 5
7766f137 365#define CXt_FORMAT 6
79072805 366
6b35e009 367/* private flags for CXt_EVAL */
368#define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */
1d76a5c3 369#define CXp_TRYBLOCK 0x00000200 /* eval{}, not eval'' or similar */
6b35e009 370
7766f137 371#ifdef USE_ITHREADS
372/* private flags for CXt_LOOP */
373# define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata
374 has pad offset; if not set,
375 iterdata holds GV* */
376# define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \
377 == (CXt_LOOP|CXp_PADVAR))
378#endif
379
6b35e009 380#define CxTYPE(c) ((c)->cx_type & CXTYPEMASK)
7766f137 381#define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \
382 == (CXt_EVAL|CXp_REAL))
1d76a5c3 383#define CxTRYBLOCK(c) (((c)->cx_type & (CXt_EVAL|CXp_TRYBLOCK)) \
384 == (CXt_EVAL|CXp_TRYBLOCK))
6b35e009 385
79072805 386#define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc()))
387
388/* "gimme" values */
954c1994 389
390/*
391=for apidoc AmU||G_SCALAR
392Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and
393L<perlcall>.
394
395=for apidoc AmU||G_ARRAY
91e74348 396Used to indicate list context. See C<GIMME_V>, C<GIMME> and
954c1994 397L<perlcall>.
398
399=for apidoc AmU||G_VOID
400Used to indicate void context. See C<GIMME_V> and L<perlcall>.
401
402=for apidoc AmU||G_DISCARD
403Indicates that arguments returned from a callback should be discarded. See
404L<perlcall>.
405
406=for apidoc AmU||G_EVAL
407
408Used to force a Perl C<eval> wrapper around a callback. See
409L<perlcall>.
410
411=for apidoc AmU||G_NOARGS
412
413Indicates that no arguments are being sent to a callback. See
414L<perlcall>.
415
416=cut
417*/
418
a0d0e21e 419#define G_SCALAR 0
420#define G_ARRAY 1
54310121 421#define G_VOID 128 /* skip this bit when adding flags below */
79072805 422
864dbfa3 423/* extra flags for Perl_call_* routines */
a0d0e21e 424#define G_DISCARD 2 /* Call FREETMPS. */
425#define G_EVAL 4 /* Assume eval {} around subroutine call. */
426#define G_NOARGS 8 /* Don't construct a @_ array. */
54310121 427#define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */
491527d0 428#define G_NODEBUG 32 /* Disable debugging at toplevel. */
968b3946 429#define G_METHOD 64 /* Calling method. */
e336de0d 430
faef0170 431/* flag bits for PL_in_eval */
432#define EVAL_NULL 0 /* not in an eval */
433#define EVAL_INEVAL 1 /* some enclosing scope is an eval */
434#define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */
864dbfa3 435#define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */
faef0170 436
e336de0d 437/* Support for switching (stack and block) contexts.
438 * This ensures magic doesn't invalidate local stack and cx pointers.
439 */
440
e788e7d3 441#define PERLSI_UNKNOWN -1
442#define PERLSI_UNDEF 0
443#define PERLSI_MAIN 1
444#define PERLSI_MAGIC 2
445#define PERLSI_SORT 3
446#define PERLSI_SIGNAL 4
447#define PERLSI_OVERLOAD 5
448#define PERLSI_DESTROY 6
449#define PERLSI_WARNHOOK 7
450#define PERLSI_DIEHOOK 8
451#define PERLSI_REQUIRE 9
e336de0d 452
453struct stackinfo {
454 AV * si_stack; /* stack for current runlevel */
455 PERL_CONTEXT * si_cxstack; /* context stack for runlevel */
456 I32 si_cxix; /* current context index */
457 I32 si_cxmax; /* maximum allocated index */
458 I32 si_type; /* type of runlevel */
459 struct stackinfo * si_prev;
460 struct stackinfo * si_next;
ce2f7c3b 461 I32 si_markoff; /* offset where markstack begins for us.
e336de0d 462 * currently used only with DEBUGGING,
463 * but not #ifdef-ed for bincompat */
464};
465
466typedef struct stackinfo PERL_SI;
467
3280af22 468#define cxstack (PL_curstackinfo->si_cxstack)
469#define cxstack_ix (PL_curstackinfo->si_cxix)
470#define cxstack_max (PL_curstackinfo->si_cxmax)
e336de0d 471
472#ifdef DEBUGGING
ce2f7c3b 473# define SET_MARK_OFFSET \
474 PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack
e336de0d 475#else
ce2f7c3b 476# define SET_MARK_OFFSET NOOP
e336de0d 477#endif
478
d3acc0f7 479#define PUSHSTACKi(type) \
e336de0d 480 STMT_START { \
3280af22 481 PERL_SI *next = PL_curstackinfo->si_next; \
e336de0d 482 if (!next) { \
483 next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \
3280af22 484 next->si_prev = PL_curstackinfo; \
485 PL_curstackinfo->si_next = next; \
e336de0d 486 } \
487 next->si_type = type; \
488 next->si_cxix = -1; \
489 AvFILLp(next->si_stack) = 0; \
3280af22 490 SWITCHSTACK(PL_curstack,next->si_stack); \
491 PL_curstackinfo = next; \
ce2f7c3b 492 SET_MARK_OFFSET; \
e336de0d 493 } STMT_END
494
e788e7d3 495#define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN)
d3acc0f7 496
3095d977 497/* POPSTACK works with PL_stack_sp, so it may need to be bracketed by
498 * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */
d3acc0f7 499#define POPSTACK \
e336de0d 500 STMT_START { \
de616352 501 djSP; \
3280af22 502 PERL_SI *prev = PL_curstackinfo->si_prev; \
e336de0d 503 if (!prev) { \
bf49b057 504 PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \
e336de0d 505 my_exit(1); \
506 } \
3280af22 507 SWITCHSTACK(PL_curstack,prev->si_stack); \
e336de0d 508 /* don't free prev here, free them all at the END{} */ \
3280af22 509 PL_curstackinfo = prev; \
e336de0d 510 } STMT_END
511
512#define POPSTACK_TO(s) \
513 STMT_START { \
3280af22 514 while (PL_curstack != s) { \
bac4b2ad 515 dounwind(-1); \
d3acc0f7 516 POPSTACK; \
bac4b2ad 517 } \
e336de0d 518 } STMT_END