Commit | Line | Data |
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a0d0e21e | 1 | /* pp.h |
79072805 | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
79072805 | 4 | * |
a0d0e21e LW |
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. | |
79072805 | 7 | * |
a0d0e21e | 8 | */ |
79072805 | 9 | |
4d1ff10f | 10 | #ifdef USE_5005THREADS |
11343788 | 11 | #define ARGS thr |
52e1cb5e | 12 | #define dARGS struct perl_thread *thr; |
11343788 | 13 | #else |
79072805 | 14 | #define ARGS |
79072805 | 15 | #define dARGS |
4d1ff10f | 16 | #endif /* USE_5005THREADS */ |
22c35a8c | 17 | |
cea2e8a9 | 18 | #define PP(s) OP * Perl_##s(pTHX) |
79072805 | 19 | |
954c1994 GS |
20 | /* |
21 | =for apidoc AmU||SP | |
22 | Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and | |
23 | C<SPAGAIN>. | |
24 | ||
25 | =for apidoc AmU||MARK | |
26 | Stack marker variable for the XSUB. See C<dMARK>. | |
27 | ||
28 | =for apidoc Ams||PUSHMARK | |
29 | Opening bracket for arguments on a callback. See C<PUTBACK> and | |
30 | L<perlcall>. | |
31 | ||
32 | =for apidoc Ams||dSP | |
33 | Declares a local copy of perl's stack pointer for the XSUB, available via | |
34 | the C<SP> macro. See C<SP>. | |
35 | ||
fac3506f MS |
36 | =for apidoc ms||djSP |
37 | ||
38 | Declare Just C<SP>. This is actually identical to C<dSP>, and declares | |
39 | a local copy of perl's stack pointer, available via the C<SP> macro. | |
40 | See C<SP>. (Available for backward source code compatibility with the | |
41 | old (Perl 5.005) thread model.) | |
42 | ||
954c1994 GS |
43 | =for apidoc Ams||dMARK |
44 | Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and | |
45 | C<dORIGMARK>. | |
46 | ||
47 | =for apidoc Ams||dORIGMARK | |
48 | Saves the original stack mark for the XSUB. See C<ORIGMARK>. | |
49 | ||
50 | =for apidoc AmU||ORIGMARK | |
51 | The original stack mark for the XSUB. See C<dORIGMARK>. | |
52 | ||
53 | =for apidoc Ams||SPAGAIN | |
54 | Refetch the stack pointer. Used after a callback. See L<perlcall>. | |
55 | ||
fac3506f | 56 | =cut */ |
954c1994 | 57 | |
ac634a9a | 58 | #undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */ |
79072805 LW |
59 | #define SP sp |
60 | #define MARK mark | |
61 | #define TARG targ | |
62 | ||
3280af22 | 63 | #define PUSHMARK(p) if (++PL_markstack_ptr == PL_markstack_max) \ |
a0d0e21e | 64 | markstack_grow(); \ |
3280af22 | 65 | *PL_markstack_ptr = (p) - PL_stack_base |
a0d0e21e | 66 | |
3280af22 NIS |
67 | #define TOPMARK (*PL_markstack_ptr) |
68 | #define POPMARK (*PL_markstack_ptr--) | |
a0d0e21e | 69 | |
39644a26 TJ |
70 | #define dSP register SV **sp = PL_stack_sp |
71 | #define djSP dSP | |
3280af22 NIS |
72 | #define dMARK register SV **mark = PL_stack_base + POPMARK |
73 | #define dORIGMARK I32 origmark = mark - PL_stack_base | |
74 | #define SETORIGMARK origmark = mark - PL_stack_base | |
75 | #define ORIGMARK (PL_stack_base + origmark) | |
79072805 | 76 | |
3280af22 NIS |
77 | #define SPAGAIN sp = PL_stack_sp |
78 | #define MSPAGAIN sp = PL_stack_sp; mark = ORIGMARK | |
79072805 | 79 | |
533c011a | 80 | #define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ)) |
79072805 LW |
81 | #define dTARGETSTACKED SV * GETTARGETSTACKED |
82 | ||
533c011a | 83 | #define GETTARGET targ = PAD_SV(PL_op->op_targ) |
79072805 LW |
84 | #define dTARGET SV * GETTARGET |
85 | ||
533c011a | 86 | #define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ)) |
79072805 LW |
87 | #define dATARGET SV * GETATARGET |
88 | ||
89 | #define dTARG SV *targ | |
90 | ||
533c011a | 91 | #define NORMAL PL_op->op_next |
cea2e8a9 | 92 | #define DIE return Perl_die |
79072805 | 93 | |
954c1994 GS |
94 | /* |
95 | =for apidoc Ams||PUTBACK | |
96 | Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>. | |
97 | See C<PUSHMARK> and L<perlcall> for other uses. | |
98 | ||
99 | =for apidoc Amn|SV*|POPs | |
100 | Pops an SV off the stack. | |
101 | ||
102 | =for apidoc Amn|char*|POPp | |
595ae481 NIS |
103 | Pops a string off the stack. Deprecated. New code should provide |
104 | a STRLEN n_a and use POPpx. | |
105 | ||
106 | =for apidoc Amn|char*|POPpx | |
954c1994 | 107 | Pops a string off the stack. |
595ae481 NIS |
108 | Requires a variable STRLEN n_a in scope. |
109 | ||
110 | =for apidoc Amn|char*|POPpbytex | |
111 | Pops a string off the stack which must consist of bytes i.e. characters < 256. | |
112 | Requires a variable STRLEN n_a in scope. | |
954c1994 GS |
113 | |
114 | =for apidoc Amn|NV|POPn | |
115 | Pops a double off the stack. | |
116 | ||
117 | =for apidoc Amn|IV|POPi | |
118 | Pops an integer off the stack. | |
119 | ||
120 | =for apidoc Amn|long|POPl | |
121 | Pops a long off the stack. | |
122 | ||
123 | =cut | |
124 | */ | |
125 | ||
3280af22 | 126 | #define PUTBACK PL_stack_sp = sp |
79072805 LW |
127 | #define RETURN return PUTBACK, NORMAL |
128 | #define RETURNOP(o) return PUTBACK, o | |
129 | #define RETURNX(x) return x, PUTBACK, NORMAL | |
130 | ||
131 | #define POPs (*sp--) | |
2d8e6c8d GS |
132 | #define POPp (SvPVx(POPs, PL_na)) /* deprecated */ |
133 | #define POPpx (SvPVx(POPs, n_a)) | |
595ae481 | 134 | #define POPpbytex (SvPVbytex(POPs, n_a)) |
463ee0b2 | 135 | #define POPn (SvNVx(POPs)) |
a0d0e21e | 136 | #define POPi ((IV)SvIVx(POPs)) |
ff68c719 | 137 | #define POPu ((UV)SvUVx(POPs)) |
463ee0b2 | 138 | #define POPl ((long)SvIVx(POPs)) |
d9b3e12d | 139 | #define POPul ((unsigned long)SvIVx(POPs)) |
1b8cd678 | 140 | #ifdef HAS_QUAD |
d9b3e12d | 141 | #define POPq ((Quad_t)SvIVx(POPs)) |
c5a0f51a | 142 | #define POPuq ((Uquad_t)SvUVx(POPs)) |
d9b3e12d | 143 | #endif |
79072805 LW |
144 | |
145 | #define TOPs (*sp) | |
56370e9f | 146 | #define TOPm1s (*(sp-1)) |
7dca457a | 147 | #define TOPp1s (*(sp+1)) |
2d8e6c8d GS |
148 | #define TOPp (SvPV(TOPs, PL_na)) /* deprecated */ |
149 | #define TOPpx (SvPV(TOPs, n_a)) | |
463ee0b2 | 150 | #define TOPn (SvNV(TOPs)) |
a0d0e21e | 151 | #define TOPi ((IV)SvIV(TOPs)) |
ff68c719 | 152 | #define TOPu ((UV)SvUV(TOPs)) |
463ee0b2 | 153 | #define TOPl ((long)SvIV(TOPs)) |
c5a0f51a | 154 | #define TOPul ((unsigned long)SvUV(TOPs)) |
1b8cd678 | 155 | #ifdef HAS_QUAD |
d9b3e12d | 156 | #define TOPq ((Quad_t)SvIV(TOPs)) |
c5a0f51a | 157 | #define TOPuq ((Uquad_t)SvUV(TOPs)) |
d9b3e12d | 158 | #endif |
79072805 LW |
159 | |
160 | /* Go to some pains in the rare event that we must extend the stack. */ | |
954c1994 GS |
161 | |
162 | /* | |
163 | =for apidoc Am|void|EXTEND|SP|int nitems | |
164 | Used to extend the argument stack for an XSUB's return values. Once | |
4375e838 | 165 | used, guarantees that there is room for at least C<nitems> to be pushed |
954c1994 GS |
166 | onto the stack. |
167 | ||
168 | =for apidoc Am|void|PUSHs|SV* sv | |
aacdac46 | 169 | Push an SV onto the stack. The stack must have room for this element. |
954c1994 GS |
170 | Does not handle 'set' magic. See C<XPUSHs>. |
171 | ||
172 | =for apidoc Am|void|PUSHp|char* str|STRLEN len | |
173 | Push a string onto the stack. The stack must have room for this element. | |
174 | The C<len> indicates the length of the string. Handles 'set' magic. See | |
175 | C<XPUSHp>. | |
176 | ||
177 | =for apidoc Am|void|PUSHn|NV nv | |
178 | Push a double onto the stack. The stack must have room for this element. | |
179 | Handles 'set' magic. See C<XPUSHn>. | |
180 | ||
181 | =for apidoc Am|void|PUSHi|IV iv | |
182 | Push an integer onto the stack. The stack must have room for this element. | |
183 | Handles 'set' magic. See C<XPUSHi>. | |
184 | ||
185 | =for apidoc Am|void|PUSHu|UV uv | |
186 | Push an unsigned integer onto the stack. The stack must have room for this | |
187 | element. See C<XPUSHu>. | |
188 | ||
189 | =for apidoc Am|void|XPUSHs|SV* sv | |
190 | Push an SV onto the stack, extending the stack if necessary. Does not | |
191 | handle 'set' magic. See C<PUSHs>. | |
192 | ||
193 | =for apidoc Am|void|XPUSHp|char* str|STRLEN len | |
194 | Push a string onto the stack, extending the stack if necessary. The C<len> | |
195 | indicates the length of the string. Handles 'set' magic. See | |
196 | C<PUSHp>. | |
197 | ||
198 | =for apidoc Am|void|XPUSHn|NV nv | |
199 | Push a double onto the stack, extending the stack if necessary. Handles | |
200 | 'set' magic. See C<PUSHn>. | |
201 | ||
202 | =for apidoc Am|void|XPUSHi|IV iv | |
203 | Push an integer onto the stack, extending the stack if necessary. Handles | |
204 | 'set' magic. See C<PUSHi>. | |
205 | ||
206 | =for apidoc Am|void|XPUSHu|UV uv | |
aacdac46 | 207 | Push an unsigned integer onto the stack, extending the stack if necessary. |
954c1994 GS |
208 | See C<PUSHu>. |
209 | ||
210 | =cut | |
211 | */ | |
212 | ||
3280af22 | 213 | #define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (n)) { \ |
bbce6d69 | 214 | sp = stack_grow(sp,p, (int) (n)); \ |
86547924 | 215 | } } STMT_END |
a0d0e21e | 216 | |
79072805 | 217 | /* Same thing, but update mark register too. */ |
3280af22 NIS |
218 | #define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (n)) { \ |
219 | int markoff = mark - PL_stack_base; \ | |
bbce6d69 | 220 | sp = stack_grow(sp,p,(int) (n)); \ |
3280af22 | 221 | mark = PL_stack_base + markoff; \ |
86547924 | 222 | } } STMT_END |
79072805 LW |
223 | |
224 | #define PUSHs(s) (*++sp = (s)) | |
86547924 | 225 | #define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END |
226 | #define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END | |
65202027 | 227 | #define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END |
86547924 | 228 | #define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END |
55497cff | 229 | #define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END |
79072805 | 230 | |
86547924 | 231 | #define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END |
232 | #define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END | |
233 | #define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END | |
65202027 | 234 | #define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END |
86547924 | 235 | #define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END |
55497cff | 236 | #define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END |
b162f9ea | 237 | #define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END |
79072805 LW |
238 | |
239 | #define SETs(s) (*sp = s) | |
86547924 | 240 | #define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END |
241 | #define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END | |
65202027 | 242 | #define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END |
86547924 | 243 | #define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END |
55497cff | 244 | #define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END |
a0d0e21e | 245 | |
79072805 LW |
246 | #define dTOPss SV *sv = TOPs |
247 | #define dPOPss SV *sv = POPs | |
65202027 DS |
248 | #define dTOPnv NV value = TOPn |
249 | #define dPOPnv NV value = POPn | |
a0d0e21e LW |
250 | #define dTOPiv IV value = TOPi |
251 | #define dPOPiv IV value = POPi | |
55497cff | 252 | #define dTOPuv UV value = TOPu |
253 | #define dPOPuv UV value = POPu | |
1b8cd678 | 254 | #ifdef HAS_QUAD |
2d4389e4 JH |
255 | #define dTOPqv Quad_t value = TOPu |
256 | #define dPOPqv Quad_t value = POPu | |
257 | #define dTOPuqv Uquad_t value = TOPuq | |
258 | #define dPOPuqv Uquad_t value = POPuq | |
259 | #endif | |
79072805 | 260 | |
7a4c00b4 | 261 | #define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s) |
65202027 | 262 | #define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n) |
7a4c00b4 | 263 | #define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i) |
264 | ||
265 | #define USE_LEFT(sv) \ | |
533c011a | 266 | (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED)) |
7a4c00b4 | 267 | #define dPOPXnnrl_ul(X) \ |
65202027 | 268 | NV right = POPn; \ |
7a4c00b4 | 269 | SV *leftsv = CAT2(X,s); \ |
65202027 | 270 | NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0 |
7a4c00b4 | 271 | #define dPOPXiirl_ul(X) \ |
272 | IV right = POPi; \ | |
273 | SV *leftsv = CAT2(X,s); \ | |
274 | IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0 | |
275 | ||
276 | #define dPOPPOPssrl dPOPXssrl(POP) | |
277 | #define dPOPPOPnnrl dPOPXnnrl(POP) | |
278 | #define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP) | |
279 | #define dPOPPOPiirl dPOPXiirl(POP) | |
280 | #define dPOPPOPiirl_ul dPOPXiirl_ul(POP) | |
281 | ||
282 | #define dPOPTOPssrl dPOPXssrl(TOP) | |
283 | #define dPOPTOPnnrl dPOPXnnrl(TOP) | |
284 | #define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP) | |
285 | #define dPOPTOPiirl dPOPXiirl(TOP) | |
286 | #define dPOPTOPiirl_ul dPOPXiirl_ul(TOP) | |
79072805 | 287 | |
3280af22 NIS |
288 | #define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes)) |
289 | #define RETPUSHNO RETURNX(PUSHs(&PL_sv_no)) | |
290 | #define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef)) | |
79072805 | 291 | |
3280af22 NIS |
292 | #define RETSETYES RETURNX(SETs(&PL_sv_yes)) |
293 | #define RETSETNO RETURNX(SETs(&PL_sv_no)) | |
294 | #define RETSETUNDEF RETURNX(SETs(&PL_sv_undef)) | |
79072805 | 295 | |
533c011a | 296 | #define ARGTARG PL_op->op_targ |
b162f9ea IZ |
297 | |
298 | /* See OPpTARGET_MY: */ | |
299 | #define MAXARG (PL_op->op_private & 15) | |
79072805 | 300 | |
e336de0d GS |
301 | #define SWITCHSTACK(f,t) \ |
302 | STMT_START { \ | |
677b06e3 | 303 | AvFILLp(f) = sp - PL_stack_base; \ |
3280af22 | 304 | PL_stack_base = AvARRAY(t); \ |
677b06e3 | 305 | PL_stack_max = PL_stack_base + AvMAX(t); \ |
3280af22 | 306 | sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \ |
677b06e3 | 307 | PL_curstack = t; \ |
e336de0d | 308 | } STMT_END |
79072805 | 309 | |
bbce6d69 | 310 | #define EXTEND_MORTAL(n) \ |
677b06e3 GS |
311 | STMT_START { \ |
312 | if (PL_tmps_ix + (n) >= PL_tmps_max) \ | |
313 | tmps_grow(n); \ | |
314 | } STMT_END | |
bbce6d69 | 315 | |
a0d0e21e LW |
316 | #define AMGf_noright 1 |
317 | #define AMGf_noleft 2 | |
318 | #define AMGf_assign 4 | |
319 | #define AMGf_unary 8 | |
320 | ||
86547924 | 321 | #define tryAMAGICbinW(meth,assign,set) STMT_START { \ |
3280af22 | 322 | if (PL_amagic_generation) { \ |
a0d0e21e LW |
323 | SV* tmpsv; \ |
324 | SV* right= *(sp); SV* left= *(sp-1);\ | |
325 | if ((SvAMAGIC(left)||SvAMAGIC(right))&&\ | |
326 | (tmpsv=amagic_call(left, \ | |
327 | right, \ | |
328 | CAT2(meth,_amg), \ | |
329 | (assign)? AMGf_assign: 0))) {\ | |
330 | SPAGAIN; \ | |
331 | (void)POPs; set(tmpsv); RETURN; } \ | |
332 | } \ | |
86547924 | 333 | } STMT_END |
a0d0e21e LW |
334 | |
335 | #define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv) | |
336 | #define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs) | |
337 | ||
3280af22 | 338 | #define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \ |
a0d0e21e LW |
339 | CAT2(meth,_amg),AMGf_noright | AMGf_unary) |
340 | #define AMG_CALLbinL(left,right,meth) \ | |
341 | amagic_call(left,right,CAT2(meth,_amg),AMGf_noright) | |
342 | ||
e8c20960 | 343 | #define tryAMAGICunW(meth,set,shift,ret) STMT_START { \ |
3280af22 | 344 | if (PL_amagic_generation) { \ |
a0d0e21e | 345 | SV* tmpsv; \ |
f5284f61 | 346 | SV* arg= sp[shift]; \ |
c4459e09 | 347 | if(0) goto am_again; /* shut up unused warning */ \ |
f5284f61 | 348 | am_again: \ |
a0d0e21e LW |
349 | if ((SvAMAGIC(arg))&&\ |
350 | (tmpsv=AMG_CALLun(arg,meth))) {\ | |
f5284f61 | 351 | SPAGAIN; if (shift) sp += shift; \ |
e8c20960 | 352 | set(tmpsv); ret; } \ |
a0d0e21e | 353 | } \ |
86547924 | 354 | } STMT_END |
a0d0e21e | 355 | |
f5284f61 IZ |
356 | #define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END |
357 | ||
b162f9ea IZ |
358 | #define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN) |
359 | #define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN) | |
f5284f61 IZ |
360 | #define tryAMAGICunTARGET(meth, shift) \ |
361 | { dSP; sp--; /* get TARGET from below PL_stack_sp */ \ | |
362 | { dTARGETSTACKED; \ | |
e8c20960 IZ |
363 | { dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}} |
364 | ||
aacdac46 NIS |
365 | #define setAGAIN(ref) sv = ref; \ |
366 | if (!SvROK(ref)) \ | |
cea2e8a9 | 367 | Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \ |
aacdac46 NIS |
368 | if (ref != arg && SvRV(ref) != SvRV(arg)) { \ |
369 | arg = ref; \ | |
370 | goto am_again; \ | |
371 | } | |
e8c20960 | 372 | |
0f4592ef | 373 | #define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0) |
a0d0e21e | 374 | |
533c011a | 375 | #define opASSIGN (PL_op->op_flags & OPf_STACKED) |
e9905555 | 376 | #define SETsv(sv) STMT_START { \ |
b162f9ea IZ |
377 | if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \ |
378 | { sv_setsv(TARG, (sv)); SETTARG; } \ | |
379 | else SETs(sv); } STMT_END | |
380 | ||
381 | #define SETsvUN(sv) STMT_START { \ | |
382 | if (SvFLAGS(TARG) & SVs_PADMY) \ | |
383 | { sv_setsv(TARG, (sv)); SETTARG; } \ | |
e9905555 | 384 | else SETs(sv); } STMT_END |
a0d0e21e LW |
385 | |
386 | /* newSVsv does not behave as advertised, so we copy missing | |
387 | * information by hand */ | |
388 | ||
76e3520e GS |
389 | /* SV* ref causes confusion with the member variable |
390 | changed SV* ref to SV* tmpRef */ | |
391 | #define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \ | |
392 | if (SvREFCNT(tmpRef)>1) { \ | |
393 | SvREFCNT_dec(tmpRef); \ | |
748a9306 | 394 | SvRV(rv)=AMG_CALLun(rv,copy); \ |
86547924 | 395 | } } STMT_END |
78f9721b SM |
396 | |
397 | /* | |
398 | =for apidoc mU||LVRET | |
399 | True if this op will be the return value of an lvalue subroutine | |
400 | ||
401 | =cut */ | |
9d96b2e7 | 402 | #define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub()) |