comparison perl-5.22.2/pp.h @ 8045:a16537d2fe07

<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author HackBot
date Sat, 14 May 2016 14:54:38 +0000
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8044:711c038a7dce 8045:a16537d2fe07
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
17 Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and
18 C<SPAGAIN>.
19
20 =for apidoc AmU||MARK
21 Stack marker variable for the XSUB. See C<dMARK>.
22
23 =for apidoc Am|void|PUSHMARK|SP
24 Opening bracket for arguments on a callback. See C<PUTBACK> and
25 L<perlcall>.
26
27 =for apidoc Ams||dSP
28 Declares a local copy of perl's stack pointer for the XSUB, available via
29 the C<SP> macro. See C<SP>.
30
31 =for apidoc ms||djSP
32
33 Declare Just C<SP>. This is actually identical to C<dSP>, and declares
34 a local copy of perl's stack pointer, available via the C<SP> macro.
35 See C<SP>. (Available for backward source code compatibility with the
36 old (Perl 5.005) thread model.)
37
38 =for apidoc Ams||dMARK
39 Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
40 C<dORIGMARK>.
41
42 =for apidoc Ams||dORIGMARK
43 Saves the original stack mark for the XSUB. See C<ORIGMARK>.
44
45 =for apidoc AmU||ORIGMARK
46 The original stack mark for the XSUB. See C<dORIGMARK>.
47
48 =for apidoc Ams||SPAGAIN
49 Refetch 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
94 Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
95 See C<PUSHMARK> and L<perlcall> for other uses.
96
97 =for apidoc Amn|SV*|POPs
98 Pops an SV off the stack.
99
100 =for apidoc Amn|char*|POPp
101 Pops a string off the stack.
102
103 =for apidoc Amn|char*|POPpx
104 Pops a string off the stack. Identical to POPp. There are two names for
105 historical reasons.
106
107 =for apidoc Amn|char*|POPpbytex
108 Pops a string off the stack which must consist of bytes i.e. characters < 256.
109
110 =for apidoc Amn|NV|POPn
111 Pops a double off the stack.
112
113 =for apidoc Amn|IV|POPi
114 Pops an integer off the stack.
115
116 =for apidoc Amn|long|POPl
117 Pops 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
153 Used to extend the argument stack for an XSUB's return values. Once
154 used, guarantees that there is room for at least C<nitems> to be pushed
155 onto the stack.
156
157 =for apidoc Am|void|PUSHs|SV* sv
158 Push an SV onto the stack. The stack must have room for this element.
159 Does not handle 'set' magic. Does not use C<TARG>. See also C<PUSHmortal>,
160 C<XPUSHs> and C<XPUSHmortal>.
161
162 =for apidoc Am|void|PUSHp|char* str|STRLEN len
163 Push a string onto the stack. The stack must have room for this element.
164 The C<len> indicates the length of the string. Handles 'set' magic. Uses
165 C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not
166 call multiple C<TARG>-oriented macros to return lists from XSUB's - see
167 C<mPUSHp> instead. See also C<XPUSHp> and C<mXPUSHp>.
168
169 =for apidoc Am|void|PUSHn|NV nv
170 Push a double onto the stack. The stack must have room for this element.
171 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
172 called to declare it. Do not call multiple C<TARG>-oriented macros to
173 return lists from XSUB's - see C<mPUSHn> instead. See also C<XPUSHn> and
174 C<mXPUSHn>.
175
176 =for apidoc Am|void|PUSHi|IV iv
177 Push an integer onto the stack. The stack must have room for this element.
178 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
179 called to declare it. Do not call multiple C<TARG>-oriented macros to
180 return lists from XSUB's - see C<mPUSHi> instead. See also C<XPUSHi> and
181 C<mXPUSHi>.
182
183 =for apidoc Am|void|PUSHu|UV uv
184 Push an unsigned integer onto the stack. The stack must have room for this
185 element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG>
186 should be called to declare it. Do not call multiple C<TARG>-oriented
187 macros to return lists from XSUB's - see C<mPUSHu> instead. See also
188 C<XPUSHu> and C<mXPUSHu>.
189
190 =for apidoc Am|void|XPUSHs|SV* sv
191 Push an SV onto the stack, extending the stack if necessary. Does not
192 handle 'set' magic. Does not use C<TARG>. See also C<XPUSHmortal>,
193 C<PUSHs> and C<PUSHmortal>.
194
195 =for apidoc Am|void|XPUSHp|char* str|STRLEN len
196 Push a string onto the stack, extending the stack if necessary. The C<len>
197 indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so
198 C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call
199 multiple C<TARG>-oriented macros to return lists from XSUB's - see
200 C<mXPUSHp> instead. See also C<PUSHp> and C<mPUSHp>.
201
202 =for apidoc Am|void|XPUSHn|NV nv
203 Push 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
205 declare it. Do not call multiple C<TARG>-oriented macros to return lists
206 from XSUB's - see C<mXPUSHn> instead. See also C<PUSHn> and C<mPUSHn>.
207
208 =for apidoc Am|void|XPUSHi|IV iv
209 Push 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
211 declare it. Do not call multiple C<TARG>-oriented macros to return lists
212 from XSUB's - see C<mXPUSHi> instead. See also C<PUSHi> and C<mPUSHi>.
213
214 =for apidoc Am|void|XPUSHu|UV uv
215 Push an unsigned integer onto the stack, extending the stack if necessary.
216 Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
217 called to declare it. Do not call multiple C<TARG>-oriented macros to
218 return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and
219 C<mPUSHu>.
220
221 =for apidoc Am|void|mPUSHs|SV* sv
222 Push an SV onto the stack and mortalizes the SV. The stack must have room
223 for this element. Does not use C<TARG>. See also C<PUSHs> and C<mXPUSHs>.
224
225 =for apidoc Am|void|PUSHmortal
226 Push a new mortal SV onto the stack. The stack must have room for this
227 element. 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
230 Push a string onto the stack. The stack must have room for this element.
231 The C<len> indicates the length of the string. Does not use C<TARG>.
232 See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
233
234 =for apidoc Am|void|mPUSHn|NV nv
235 Push a double onto the stack. The stack must have room for this element.
236 Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> and C<XPUSHn>.
237
238 =for apidoc Am|void|mPUSHi|IV iv
239 Push an integer onto the stack. The stack must have room for this element.
240 Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> and C<XPUSHi>.
241
242 =for apidoc Am|void|mPUSHu|UV uv
243 Push an unsigned integer onto the stack. The stack must have room for this
244 element. Does not use C<TARG>. See also C<PUSHu>, C<mXPUSHu> and C<XPUSHu>.
245
246 =for apidoc Am|void|mXPUSHs|SV* sv
247 Push an SV onto the stack, extending the stack if necessary and mortalizes
248 the SV. Does not use C<TARG>. See also C<XPUSHs> and C<mPUSHs>.
249
250 =for apidoc Am|void|XPUSHmortal
251 Push a new mortal SV onto the stack, extending the stack if necessary.
252 Does not use C<TARG>. See also C<XPUSHs>, C<PUSHmortal> and C<PUSHs>.
253
254 =for apidoc Am|void|mXPUSHp|char* str|STRLEN len
255 Push a string onto the stack, extending the stack if necessary. The C<len>
256 indicates the length of the string. Does not use C<TARG>. See also C<XPUSHp>,
257 C<mPUSHp> and C<PUSHp>.
258
259 =for apidoc Am|void|mXPUSHn|NV nv
260 Push a double onto the stack, extending the stack if necessary.
261 Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and C<PUSHn>.
262
263 =for apidoc Am|void|mXPUSHi|IV iv
264 Push an integer onto the stack, extending the stack if necessary.
265 Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and C<PUSHi>.
266
267 =for apidoc Am|void|mXPUSHu|UV uv
268 Push an unsigned integer onto the stack, extending the stack if necessary.
269 Does 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
488 True 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 */