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1/* pp.h
2 *
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
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 *
9 */
10
11#define PP(s) OP * Perl_##s(pTHX)
12
13/*
14=head1 Stack Manipulation Macros
15
16=for apidoc AmU||SP
17Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and
18C<SPAGAIN>.
19
20=for apidoc AmU||MARK
21Stack marker variable for the XSUB. See C<dMARK>.
22
23=for apidoc Am|void|PUSHMARK|SP
24Opening bracket for arguments on a callback. See C<PUTBACK> and
25L<perlcall>.
26
27=for apidoc Ams||dSP
28Declares a local copy of perl's stack pointer for the XSUB, available via
29the C<SP> macro. See C<SP>.
30
31=for apidoc ms||djSP
32
33Declare Just C<SP>. This is actually identical to C<dSP>, and declares
34a local copy of perl's stack pointer, available via the C<SP> macro.
35See C<SP>. (Available for backward source code compatibility with the
36old (Perl 5.005) thread model.)
37
38=for apidoc Ams||dMARK
39Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
40C<dORIGMARK>.
41
42=for apidoc Ams||dORIGMARK
43Saves the original stack mark for the XSUB. See C<ORIGMARK>.
44
45=for apidoc AmU||ORIGMARK
46The original stack mark for the XSUB. See C<dORIGMARK>.
47
48=for apidoc Ams||SPAGAIN
49Refetch the stack pointer. Used after a callback. See L<perlcall>.
50
51=cut */
52
53#undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */
54#define SP sp
55#define MARK mark
56#define TARG targ
57
58#define PUSHMARK(p) \
59 STMT_START { \
60 I32 * mark_stack_entry; \
61 if (UNLIKELY((mark_stack_entry = ++PL_markstack_ptr) == PL_markstack_max)) \
62 mark_stack_entry = markstack_grow(); \
63 *mark_stack_entry = (I32)((p) - PL_stack_base); \
64 } STMT_END
65
66#define TOPMARK (*PL_markstack_ptr)
67#define POPMARK (*PL_markstack_ptr--)
68
69#define dSP SV **sp = PL_stack_sp
70#define djSP dSP
71#define dMARK SV **mark = PL_stack_base + POPMARK
72#define dORIGMARK const I32 origmark = (I32)(mark - PL_stack_base)
73#define ORIGMARK (PL_stack_base + origmark)
74
75#define SPAGAIN sp = PL_stack_sp
76#define MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END
77
78#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
79#define dTARGETSTACKED SV * GETTARGETSTACKED
80
81#define GETTARGET targ = PAD_SV(PL_op->op_targ)
82#define dTARGET SV * GETTARGET
83
84#define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ))
85#define dATARGET SV * GETATARGET
86
87#define dTARG SV *targ
88
89#define NORMAL PL_op->op_next
90#define DIE return Perl_die
91
92/*
93=for apidoc Ams||PUTBACK
94Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
95See C<PUSHMARK> and L<perlcall> for other uses.
96
97=for apidoc Amn|SV*|POPs
98Pops an SV off the stack.
99
100=for apidoc Amn|char*|POPp
101Pops a string off the stack.
102
103=for apidoc Amn|char*|POPpx
104Pops a string off the stack. Identical to POPp. There are two names for
105historical reasons.
106
107=for apidoc Amn|char*|POPpbytex
108Pops a string off the stack which must consist of bytes i.e. characters < 256.
109
110=for apidoc Amn|NV|POPn
111Pops a double off the stack.
112
113=for apidoc Amn|IV|POPi
114Pops an integer off the stack.
115
116=for apidoc Amn|long|POPl
117Pops a long off the stack.
118
119=cut
120*/
121
122#define PUTBACK PL_stack_sp = sp
123#define RETURN return (PUTBACK, NORMAL)
124#define RETURNOP(o) return (PUTBACK, o)
125#define RETURNX(x) return (x, PUTBACK, NORMAL)
126
127#define POPs (*sp--)
128#define POPp POPpx
129#define POPpx (SvPVx_nolen(POPs))
130#define POPpconstx (SvPVx_nolen_const(POPs))
131#define POPpbytex (SvPVbytex_nolen(POPs))
132#define POPn (SvNVx(POPs))
133#define POPi ((IV)SvIVx(POPs))
134#define POPu ((UV)SvUVx(POPs))
135#define POPl ((long)SvIVx(POPs))
136#define POPul ((unsigned long)SvIVx(POPs))
137
138#define TOPs (*sp)
139#define TOPm1s (*(sp-1))
140#define TOPp1s (*(sp+1))
141#define TOPp TOPpx
142#define TOPpx (SvPV_nolen(TOPs))
143#define TOPn (SvNV(TOPs))
144#define TOPi ((IV)SvIV(TOPs))
145#define TOPu ((UV)SvUV(TOPs))
146#define TOPl ((long)SvIV(TOPs))
147#define TOPul ((unsigned long)SvUV(TOPs))
148
149/* Go to some pains in the rare event that we must extend the stack. */
150
151/*
152=for apidoc Am|void|EXTEND|SP|SSize_t nitems
153Used to extend the argument stack for an XSUB's return values. Once
154used, guarantees that there is room for at least C<nitems> to be pushed
155onto the stack.
156
157=for apidoc Am|void|PUSHs|SV* sv
158Push an SV onto the stack. The stack must have room for this element.
159Does not handle 'set' magic. Does not use C<TARG>. See also C<PUSHmortal>,
160C<XPUSHs> and C<XPUSHmortal>.
161
162=for apidoc Am|void|PUSHp|char* str|STRLEN len
163Push a string onto the stack. The stack must have room for this element.
164The C<len> indicates the length of the string. Handles 'set' magic. Uses
165C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not
166call multiple C<TARG>-oriented macros to return lists from XSUB's - see
167C<mPUSHp> instead. See also C<XPUSHp> and C<mXPUSHp>.
168
169=for apidoc Am|void|PUSHn|NV nv
170Push a double onto the stack. The stack must have room for this element.
171Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
172called to declare it. Do not call multiple C<TARG>-oriented macros to
173return lists from XSUB's - see C<mPUSHn> instead. See also C<XPUSHn> and
174C<mXPUSHn>.
175
176=for apidoc Am|void|PUSHi|IV iv
177Push an integer onto the stack. The stack must have room for this element.
178Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
179called to declare it. Do not call multiple C<TARG>-oriented macros to
180return lists from XSUB's - see C<mPUSHi> instead. See also C<XPUSHi> and
181C<mXPUSHi>.
182
183=for apidoc Am|void|PUSHu|UV uv
184Push an unsigned integer onto the stack. The stack must have room for this
185element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG>
186should be called to declare it. Do not call multiple C<TARG>-oriented
187macros to return lists from XSUB's - see C<mPUSHu> instead. See also
188C<XPUSHu> and C<mXPUSHu>.
189
190=for apidoc Am|void|XPUSHs|SV* sv
191Push an SV onto the stack, extending the stack if necessary. Does not
192handle 'set' magic. Does not use C<TARG>. See also C<XPUSHmortal>,
193C<PUSHs> and C<PUSHmortal>.
194
195=for apidoc Am|void|XPUSHp|char* str|STRLEN len
196Push a string onto the stack, extending the stack if necessary. The C<len>
197indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so
198C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call
199multiple C<TARG>-oriented macros to return lists from XSUB's - see
200C<mXPUSHp> instead. See also C<PUSHp> and C<mPUSHp>.
201
202=for apidoc Am|void|XPUSHn|NV nv
203Push a double onto the stack, extending the stack if necessary. Handles
204'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
205declare it. Do not call multiple C<TARG>-oriented macros to return lists
206from XSUB's - see C<mXPUSHn> instead. See also C<PUSHn> and C<mPUSHn>.
207
208=for apidoc Am|void|XPUSHi|IV iv
209Push an integer onto the stack, extending the stack if necessary. Handles
210'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
211declare it. Do not call multiple C<TARG>-oriented macros to return lists
212from XSUB's - see C<mXPUSHi> instead. See also C<PUSHi> and C<mPUSHi>.
213
214=for apidoc Am|void|XPUSHu|UV uv
215Push an unsigned integer onto the stack, extending the stack if necessary.
216Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
217called to declare it. Do not call multiple C<TARG>-oriented macros to
218return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and
219C<mPUSHu>.
220
221=for apidoc Am|void|mPUSHs|SV* sv
222Push an SV onto the stack and mortalizes the SV. The stack must have room
223for this element. Does not use C<TARG>. See also C<PUSHs> and C<mXPUSHs>.
224
225=for apidoc Am|void|PUSHmortal
226Push a new mortal SV onto the stack. The stack must have room for this
227element. Does not use C<TARG>. See also C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
228
229=for apidoc Am|void|mPUSHp|char* str|STRLEN len
230Push a string onto the stack. The stack must have room for this element.
231The C<len> indicates the length of the string. Does not use C<TARG>.
232See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
233
234=for apidoc Am|void|mPUSHn|NV nv
235Push a double onto the stack. The stack must have room for this element.
236Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> and C<XPUSHn>.
237
238=for apidoc Am|void|mPUSHi|IV iv
239Push an integer onto the stack. The stack must have room for this element.
240Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> and C<XPUSHi>.
241
242=for apidoc Am|void|mPUSHu|UV uv
243Push an unsigned integer onto the stack. The stack must have room for this
244element. Does not use C<TARG>. See also C<PUSHu>, C<mXPUSHu> and C<XPUSHu>.
245
246=for apidoc Am|void|mXPUSHs|SV* sv
247Push an SV onto the stack, extending the stack if necessary and mortalizes
248the SV. Does not use C<TARG>. See also C<XPUSHs> and C<mPUSHs>.
249
250=for apidoc Am|void|XPUSHmortal
251Push a new mortal SV onto the stack, extending the stack if necessary.
252Does not use C<TARG>. See also C<XPUSHs>, C<PUSHmortal> and C<PUSHs>.
253
254=for apidoc Am|void|mXPUSHp|char* str|STRLEN len
255Push a string onto the stack, extending the stack if necessary. The C<len>
256indicates the length of the string. Does not use C<TARG>. See also C<XPUSHp>,
257C<mPUSHp> and C<PUSHp>.
258
259=for apidoc Am|void|mXPUSHn|NV nv
260Push a double onto the stack, extending the stack if necessary.
261Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and C<PUSHn>.
262
263=for apidoc Am|void|mXPUSHi|IV iv
264Push an integer onto the stack, extending the stack if necessary.
265Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and C<PUSHi>.
266
267=for apidoc Am|void|mXPUSHu|UV uv
268Push an unsigned integer onto the stack, extending the stack if necessary.
269Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu> and C<PUSHu>.
270
271=cut
272*/
273
274#ifdef STRESS_REALLOC
275# define EXTEND(p,n) STMT_START { \
276 sp = stack_grow(sp,p,(SSize_t) (n)); \
277 PERL_UNUSED_VAR(sp); \
278 } STMT_END
279/* Same thing, but update mark register too. */
280# define MEXTEND(p,n) STMT_START { \
281 const SSize_t markoff = mark - PL_stack_base; \
282 sp = stack_grow(sp,p,(SSize_t) (n)); \
283 mark = PL_stack_base + markoff; \
284 PERL_UNUSED_VAR(sp); \
285 } STMT_END
286#else
287# define EXTEND(p,n) STMT_START { \
288 if (UNLIKELY(PL_stack_max - p < (SSize_t)(n))) { \
289 sp = stack_grow(sp,p,(SSize_t) (n)); \
290 PERL_UNUSED_VAR(sp); \
291 } } STMT_END
292/* Same thing, but update mark register too. */
293# define MEXTEND(p,n) STMT_START { \
294 if (UNLIKELY(PL_stack_max - p < (SSize_t)(n))) { \
295 const SSize_t markoff = mark - PL_stack_base; \
296 sp = stack_grow(sp,p,(SSize_t) (n)); \
297 mark = PL_stack_base + markoff; \
298 PERL_UNUSED_VAR(sp); \
299 } } STMT_END
300#endif
301
302#define PUSHs(s) (*++sp = (s))
303#define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
304#define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
305#define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END
306#define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END
307#define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END
308
309#define XPUSHs(s) STMT_START { EXTEND(sp,1); *++sp = (s); } STMT_END
310#define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
311#define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
312#define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END
313#define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END
314#define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END
315#define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END
316
317#define mPUSHs(s) PUSHs(sv_2mortal(s))
318#define PUSHmortal PUSHs(sv_newmortal())
319#define mPUSHp(p,l) PUSHs(newSVpvn_flags((p), (l), SVs_TEMP))
320#define mPUSHn(n) sv_setnv(PUSHmortal, (NV)(n))
321#define mPUSHi(i) sv_setiv(PUSHmortal, (IV)(i))
322#define mPUSHu(u) sv_setuv(PUSHmortal, (UV)(u))
323
324#define mXPUSHs(s) XPUSHs(sv_2mortal(s))
325#define XPUSHmortal XPUSHs(sv_newmortal())
326#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); mPUSHp((p), (l)); } STMT_END
327#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv(PUSHmortal, (NV)(n)); } STMT_END
328#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv(PUSHmortal, (IV)(i)); } STMT_END
329#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv(PUSHmortal, (UV)(u)); } STMT_END
330
331#define SETs(s) (*sp = s)
332#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
333#define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
334#define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END
335#define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END
336#define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END
337
338#define dTOPss SV *sv = TOPs
339#define dPOPss SV *sv = POPs
340#define dTOPnv NV value = TOPn
341#define dPOPnv NV value = POPn
342#define dPOPnv_nomg NV value = (sp--, SvNV_nomg(TOPp1s))
343#define dTOPiv IV value = TOPi
344#define dPOPiv IV value = POPi
345#define dTOPuv UV value = TOPu
346#define dPOPuv UV value = POPu
347
348#define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s)
349#define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n)
350#define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i)
351
352#define USE_LEFT(sv) \
353 (SvOK(sv) || !(PL_op->op_flags & OPf_STACKED))
354#define dPOPXiirl_ul_nomg(X) \
355 IV right = (sp--, SvIV_nomg(TOPp1s)); \
356 SV *leftsv = CAT2(X,s); \
357 IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0
358
359#define dPOPPOPssrl dPOPXssrl(POP)
360#define dPOPPOPnnrl dPOPXnnrl(POP)
361#define dPOPPOPiirl dPOPXiirl(POP)
362
363#define dPOPTOPssrl dPOPXssrl(TOP)
364#define dPOPTOPnnrl dPOPXnnrl(TOP)
365#define dPOPTOPnnrl_nomg \
366 NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs))
367#define dPOPTOPiirl dPOPXiirl(TOP)
368#define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP)
369#define dPOPTOPiirl_nomg \
370 IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs))
371
372#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
373#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
374#define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef))
375
376#define RETSETYES RETURNX(SETs(&PL_sv_yes))
377#define RETSETNO RETURNX(SETs(&PL_sv_no))
378#define RETSETUNDEF RETURNX(SETs(&PL_sv_undef))
379#define RETSETTARG STMT_START { SETTARG; RETURN; } STMT_END
380
381#define ARGTARG PL_op->op_targ
382
383#define MAXARG (PL_op->op_private & OPpARG4_MASK)
384
385#define SWITCHSTACK(f,t) \
386 STMT_START { \
387 AvFILLp(f) = sp - PL_stack_base; \
388 PL_stack_base = AvARRAY(t); \
389 PL_stack_max = PL_stack_base + AvMAX(t); \
390 sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \
391 PL_curstack = t; \
392 } STMT_END
393
394#define EXTEND_MORTAL(n) \
395 STMT_START { \
396 SSize_t eMiX = PL_tmps_ix + (n); \
397 if (UNLIKELY(eMiX >= PL_tmps_max)) \
398 (void)Perl_tmps_grow_p(aTHX_ eMiX); \
399 } STMT_END
400
401#define AMGf_noright 1
402#define AMGf_noleft 2
403#define AMGf_assign 4
404#define AMGf_unary 8
405#define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */
406#define AMGf_set 0x20 /* for Perl_try_amagic_bin */
407#define AMGf_want_list 0x40
408#define AMGf_numarg 0x80
409
410
411/* do SvGETMAGIC on the stack args before checking for overload */
412
413#define tryAMAGICun_MG(method, flags) STMT_START { \
414 if ( UNLIKELY((SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG))) \
415 && Perl_try_amagic_un(aTHX_ method, flags)) \
416 return NORMAL; \
417 } STMT_END
418#define tryAMAGICbin_MG(method, flags) STMT_START { \
419 if ( UNLIKELY(((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG))) \
420 && Perl_try_amagic_bin(aTHX_ method, flags)) \
421 return NORMAL; \
422 } STMT_END
423
424#define AMG_CALLunary(sv,meth) \
425 amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary)
426
427/* No longer used in core. Use AMG_CALLunary instead */
428#define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg))
429
430#define tryAMAGICunTARGETlist(meth, jump) \
431 STMT_START { \
432 dSP; \
433 SV *tmpsv; \
434 SV *arg= *sp; \
435 int gimme = GIMME_V; \
436 if (UNLIKELY(SvAMAGIC(arg) && \
437 (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \
438 AMGf_want_list | AMGf_noright \
439 |AMGf_unary)))) \
440 { \
441 SPAGAIN; \
442 if (gimme == G_VOID) { \
443 NOOP; \
444 } \
445 else if (gimme == G_ARRAY) { \
446 SSize_t i; \
447 SSize_t len; \
448 assert(SvTYPE(tmpsv) == SVt_PVAV); \
449 len = av_tindex((AV *)tmpsv) + 1; \
450 (void)POPs; /* get rid of the arg */ \
451 EXTEND(sp, len); \
452 for (i = 0; i < len; ++i) \
453 PUSHs(av_shift((AV *)tmpsv)); \
454 } \
455 else { /* AMGf_want_scalar */ \
456 dATARGET; /* just use the arg's location */ \
457 sv_setsv(TARG, tmpsv); \
458 if (opASSIGN) \
459 sp--; \
460 SETTARG; \
461 } \
462 PUTBACK; \
463 if (jump) { \
464 OP *jump_o = NORMAL->op_next; \
465 while (jump_o->op_type == OP_NULL) \
466 jump_o = jump_o->op_next; \
467 assert(jump_o->op_type == OP_ENTERSUB); \
468 PL_markstack_ptr--; \
469 return jump_o->op_next; \
470 } \
471 return NORMAL; \
472 } \
473 } STMT_END
474
475/* This is no longer used anywhere in the core. You might wish to consider
476 calling amagic_deref_call() directly, as it has a cleaner interface. */
477#define tryAMAGICunDEREF(meth) \
478 STMT_START { \
479 sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \
480 SPAGAIN; \
481 } STMT_END
482
483
484#define opASSIGN (PL_op->op_flags & OPf_STACKED)
485
486/*
487=for apidoc mU||LVRET
488True if this op will be the return value of an lvalue subroutine
489
490=cut */
491#define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub())
492
493#define SvCANEXISTDELETE(sv) \
494 (!SvRMAGICAL(sv) \
495 || !(mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \
496 || ( (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \
497 && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \
498 && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \
499 ) \
500 )
501
502#ifdef PERL_CORE
503
504/* These are just for Perl_tied_method(), which is not part of the public API.
505 Use 0x04 rather than the next available bit, to help the compiler if the
506 architecture can generate more efficient instructions. */
507# define TIED_METHOD_MORTALIZE_NOT_NEEDED 0x04
508# define TIED_METHOD_ARGUMENTS_ON_STACK 0x08
509# define TIED_METHOD_SAY 0x10
510
511/* Used in various places that need to dereference a glob or globref */
512# define MAYBE_DEREF_GV_flags(sv,phlags) \
513 ( \
514 (void)(phlags & SV_GMAGIC && (SvGETMAGIC(sv),0)), \
515 isGV_with_GP(sv) \
516 ? (GV *)(sv) \
517 : SvROK(sv) && SvTYPE(SvRV(sv)) <= SVt_PVLV && \
518 (SvGETMAGIC(SvRV(sv)), isGV_with_GP(SvRV(sv))) \
519 ? (GV *)SvRV(sv) \
520 : NULL \
521 )
522# define MAYBE_DEREF_GV(sv) MAYBE_DEREF_GV_flags(sv,SV_GMAGIC)
523# define MAYBE_DEREF_GV_nomg(sv) MAYBE_DEREF_GV_flags(sv,0)
524
525# define FIND_RUNCV_padid_eq 1
526# define FIND_RUNCV_level_eq 2
527
528#endif
529
530/*
531 * ex: set ts=8 sts=4 sw=4 et:
532 */
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