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a0d0e21e 1/* pp.h
79072805 2 *
4bb101f2
JH
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
4 * 2000, 2001, by Larry Wall and others
79072805 5 *
a0d0e21e
LW
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.
79072805 8 *
a0d0e21e 9 */
79072805 10
cea2e8a9 11#define PP(s) OP * Perl_##s(pTHX)
79072805 12
954c1994 13/*
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JH
14=head1 Stack Manipulation Macros
15
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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 Ams||PUSHMARK
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
fac3506f
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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
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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
fac3506f 51=cut */
954c1994 52
ac634a9a 53#undef SP /* Solaris 2.7 i386 has this in /usr/include/sys/reg.h */
79072805
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54#define SP sp
55#define MARK mark
56#define TARG targ
57
3280af22 58#define PUSHMARK(p) if (++PL_markstack_ptr == PL_markstack_max) \
a0d0e21e 59 markstack_grow(); \
3280af22 60 *PL_markstack_ptr = (p) - PL_stack_base
a0d0e21e 61
3280af22
NIS
62#define TOPMARK (*PL_markstack_ptr)
63#define POPMARK (*PL_markstack_ptr--)
a0d0e21e 64
39644a26
TJ
65#define dSP register SV **sp = PL_stack_sp
66#define djSP dSP
3280af22
NIS
67#define dMARK register SV **mark = PL_stack_base + POPMARK
68#define dORIGMARK I32 origmark = mark - PL_stack_base
69#define SETORIGMARK origmark = mark - PL_stack_base
70#define ORIGMARK (PL_stack_base + origmark)
79072805 71
3280af22
NIS
72#define SPAGAIN sp = PL_stack_sp
73#define MSPAGAIN sp = PL_stack_sp; mark = ORIGMARK
79072805 74
533c011a 75#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
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76#define dTARGETSTACKED SV * GETTARGETSTACKED
77
533c011a 78#define GETTARGET targ = PAD_SV(PL_op->op_targ)
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79#define dTARGET SV * GETTARGET
80
533c011a 81#define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ))
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82#define dATARGET SV * GETATARGET
83
84#define dTARG SV *targ
85
533c011a 86#define NORMAL PL_op->op_next
cea2e8a9 87#define DIE return Perl_die
79072805 88
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89/*
90=for apidoc Ams||PUTBACK
91Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
92See C<PUSHMARK> and L<perlcall> for other uses.
93
94=for apidoc Amn|SV*|POPs
95Pops an SV off the stack.
96
97=for apidoc Amn|char*|POPp
595ae481
NIS
98Pops a string off the stack. Deprecated. New code should provide
99a STRLEN n_a and use POPpx.
100
101=for apidoc Amn|char*|POPpx
954c1994 102Pops a string off the stack.
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NIS
103Requires a variable STRLEN n_a in scope.
104
105=for apidoc Amn|char*|POPpbytex
106Pops a string off the stack which must consist of bytes i.e. characters < 256.
107Requires a variable STRLEN n_a in scope.
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108
109=for apidoc Amn|NV|POPn
110Pops a double off the stack.
111
112=for apidoc Amn|IV|POPi
113Pops an integer off the stack.
114
115=for apidoc Amn|long|POPl
116Pops a long off the stack.
117
118=cut
119*/
120
3280af22 121#define PUTBACK PL_stack_sp = sp
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122#define RETURN return PUTBACK, NORMAL
123#define RETURNOP(o) return PUTBACK, o
124#define RETURNX(x) return x, PUTBACK, NORMAL
125
126#define POPs (*sp--)
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127#define POPp (SvPVx(POPs, PL_na)) /* deprecated */
128#define POPpx (SvPVx(POPs, n_a))
595ae481 129#define POPpbytex (SvPVbytex(POPs, n_a))
463ee0b2 130#define POPn (SvNVx(POPs))
a0d0e21e 131#define POPi ((IV)SvIVx(POPs))
ff68c719 132#define POPu ((UV)SvUVx(POPs))
463ee0b2 133#define POPl ((long)SvIVx(POPs))
d9b3e12d 134#define POPul ((unsigned long)SvIVx(POPs))
1b8cd678 135#ifdef HAS_QUAD
d9b3e12d 136#define POPq ((Quad_t)SvIVx(POPs))
c5a0f51a 137#define POPuq ((Uquad_t)SvUVx(POPs))
d9b3e12d 138#endif
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139
140#define TOPs (*sp)
56370e9f 141#define TOPm1s (*(sp-1))
7dca457a 142#define TOPp1s (*(sp+1))
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143#define TOPp (SvPV(TOPs, PL_na)) /* deprecated */
144#define TOPpx (SvPV(TOPs, n_a))
463ee0b2 145#define TOPn (SvNV(TOPs))
a0d0e21e 146#define TOPi ((IV)SvIV(TOPs))
ff68c719 147#define TOPu ((UV)SvUV(TOPs))
463ee0b2 148#define TOPl ((long)SvIV(TOPs))
c5a0f51a 149#define TOPul ((unsigned long)SvUV(TOPs))
1b8cd678 150#ifdef HAS_QUAD
d9b3e12d 151#define TOPq ((Quad_t)SvIV(TOPs))
c5a0f51a 152#define TOPuq ((Uquad_t)SvUV(TOPs))
d9b3e12d 153#endif
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154
155/* Go to some pains in the rare event that we must extend the stack. */
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156
157/*
158=for apidoc Am|void|EXTEND|SP|int nitems
159Used to extend the argument stack for an XSUB's return values. Once
4375e838 160used, guarantees that there is room for at least C<nitems> to be pushed
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161onto the stack.
162
163=for apidoc Am|void|PUSHs|SV* sv
aacdac46 164Push an SV onto the stack. The stack must have room for this element.
d82b684c
SH
165Does not handle 'set' magic. Does not use C<TARG>. See also C<PUSHmortal>,
166C<XPUSHs> and C<XPUSHmortal>.
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167
168=for apidoc Am|void|PUSHp|char* str|STRLEN len
169Push a string onto the stack. The stack must have room for this element.
d82b684c
SH
170The C<len> indicates the length of the string. Handles 'set' magic. Uses
171C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to declare it. Do not
172call multiple C<TARG>-oriented macros to return lists from XSUB's - see
173C<mPUSHp> instead. See also C<XPUSHp> and C<mXPUSHp>.
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174
175=for apidoc Am|void|PUSHn|NV nv
176Push a double onto the stack. The stack must have room for this element.
d82b684c
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177Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
178called to declare it. Do not call multiple C<TARG>-oriented macros to
179return lists from XSUB's - see C<mPUSHn> instead. See also C<XPUSHn> and
180C<mXPUSHn>.
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181
182=for apidoc Am|void|PUSHi|IV iv
183Push an integer onto the stack. The stack must have room for this element.
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184Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
185called to declare it. Do not call multiple C<TARG>-oriented macros to
186return lists from XSUB's - see C<mPUSHi> instead. See also C<XPUSHi> and
187C<mXPUSHi>.
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188
189=for apidoc Am|void|PUSHu|UV uv
190Push an unsigned integer onto the stack. The stack must have room for this
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191element. Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG>
192should be called to declare it. Do not call multiple C<TARG>-oriented
193macros to return lists from XSUB's - see C<mPUSHu> instead. See also
194C<XPUSHu> and C<mXPUSHu>.
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195
196=for apidoc Am|void|XPUSHs|SV* sv
197Push an SV onto the stack, extending the stack if necessary. Does not
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198handle 'set' magic. Does not use C<TARG>. See also C<XPUSHmortal>,
199C<PUSHs> and C<PUSHmortal>.
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200
201=for apidoc Am|void|XPUSHp|char* str|STRLEN len
202Push a string onto the stack, extending the stack if necessary. The C<len>
d82b684c
SH
203indicates the length of the string. Handles 'set' magic. Uses C<TARG>, so
204C<dTARGET> or C<dXSTARG> should be called to declare it. Do not call
205multiple C<TARG>-oriented macros to return lists from XSUB's - see
206C<mXPUSHp> instead. See also C<PUSHp> and C<mPUSHp>.
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207
208=for apidoc Am|void|XPUSHn|NV nv
209Push a double onto the stack, extending the stack if necessary. Handles
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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<mXPUSHn> instead. See also C<PUSHn> and C<mPUSHn>.
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213
214=for apidoc Am|void|XPUSHi|IV iv
215Push an integer onto the stack, extending the stack if necessary. Handles
d82b684c
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216'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be called to
217declare it. Do not call multiple C<TARG>-oriented macros to return lists
218from XSUB's - see C<mXPUSHi> instead. See also C<PUSHi> and C<mPUSHi>.
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219
220=for apidoc Am|void|XPUSHu|UV uv
aacdac46 221Push an unsigned integer onto the stack, extending the stack if necessary.
d82b684c
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222Handles 'set' magic. Uses C<TARG>, so C<dTARGET> or C<dXSTARG> should be
223called to declare it. Do not call multiple C<TARG>-oriented macros to
224return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and
225C<mPUSHu>.
226
227=for apidoc Am|void|PUSHmortal
228Push a new mortal SV onto the stack. The stack must have room for this
229element. Does not handle 'set' magic. Does not use C<TARG>. See also
230C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
231
232=for apidoc Am|void|mPUSHp|char* str|STRLEN len
233Push a string onto the stack. The stack must have room for this element.
de4f2208
RGS
234The C<len> indicates the length of the string. Handles 'set' magic. Does
235not use C<TARG>. See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
d82b684c
SH
236
237=for apidoc Am|void|mPUSHn|NV nv
238Push a double onto the stack. The stack must have room for this element.
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239Handles 'set' magic. Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn>
240and C<XPUSHn>.
d82b684c
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241
242=for apidoc Am|void|mPUSHi|IV iv
243Push an integer onto the stack. The stack must have room for this element.
de4f2208
RGS
244Handles 'set' magic. Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi>
245and C<XPUSHi>.
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246
247=for apidoc Am|void|mPUSHu|UV uv
248Push an unsigned integer onto the stack. The stack must have room for this
de4f2208
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249element. Handles 'set' magic. Does not use C<TARG>. See also C<PUSHu>,
250C<mXPUSHu> and C<XPUSHu>.
d82b684c
SH
251
252=for apidoc Am|void|XPUSHmortal
253Push a new mortal SV onto the stack, extending the stack if necessary. Does
254not handle 'set' magic. Does not use C<TARG>. See also C<XPUSHs>,
255C<PUSHmortal> and C<PUSHs>.
256
257=for apidoc Am|void|mXPUSHp|char* str|STRLEN len
258Push a string onto the stack, extending the stack if necessary. The C<len>
de4f2208
RGS
259indicates the length of the string. Handles 'set' magic. Does not use
260C<TARG>. See also C<XPUSHp>, C<mPUSHp> and C<PUSHp>.
d82b684c
SH
261
262=for apidoc Am|void|mXPUSHn|NV nv
de4f2208
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263Push a double onto the stack, extending the stack if necessary. Handles
264'set' magic. Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and
265C<PUSHn>.
d82b684c
SH
266
267=for apidoc Am|void|mXPUSHi|IV iv
de4f2208
RGS
268Push an integer onto the stack, extending the stack if necessary. Handles
269'set' magic. Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and
270C<PUSHi>.
d82b684c
SH
271
272=for apidoc Am|void|mXPUSHu|UV uv
273Push an unsigned integer onto the stack, extending the stack if necessary.
de4f2208
RGS
274Handles 'set' magic. Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu>
275and C<PUSHu>.
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276
277=cut
278*/
279
c5661c80 280#define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (int)(n)) { \
bbce6d69 281 sp = stack_grow(sp,p, (int) (n)); \
86547924 282 } } STMT_END
a0d0e21e 283
79072805 284/* Same thing, but update mark register too. */
c5661c80 285#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \
3280af22 286 int markoff = mark - PL_stack_base; \
bbce6d69 287 sp = stack_grow(sp,p,(int) (n)); \
3280af22 288 mark = PL_stack_base + markoff; \
86547924 289 } } STMT_END
79072805
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290
291#define PUSHs(s) (*++sp = (s))
86547924
PP
292#define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
293#define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
65202027 294#define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END
86547924 295#define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END
55497cff 296#define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END
79072805 297
86547924
PP
298#define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END
299#define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
300#define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
65202027 301#define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END
86547924 302#define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END
55497cff 303#define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END
b162f9ea 304#define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END
79072805 305
2cc7004b
MHM
306#define PUSHmortal PUSHs(sv_newmortal())
307#define mPUSHp(p,l) sv_setpvn_mg(PUSHmortal, (p), (l))
308#define mPUSHn(n) sv_setnv_mg(PUSHmortal, (NV)(n))
309#define mPUSHi(i) sv_setiv_mg(PUSHmortal, (IV)(i))
310#define mPUSHu(u) sv_setuv_mg(PUSHmortal, (UV)(u))
311
312#define XPUSHmortal XPUSHs(sv_newmortal())
313#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); sv_setpvn_mg(PUSHmortal, (p), (l)); } STMT_END
314#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv_mg(PUSHmortal, (NV)(n)); } STMT_END
315#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv_mg(PUSHmortal, (IV)(i)); } STMT_END
316#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv_mg(PUSHmortal, (UV)(u)); } STMT_END
d82b684c 317
79072805 318#define SETs(s) (*sp = s)
86547924
PP
319#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
320#define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
65202027 321#define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END
86547924 322#define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END
55497cff 323#define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END
a0d0e21e 324
79072805
LW
325#define dTOPss SV *sv = TOPs
326#define dPOPss SV *sv = POPs
65202027
DS
327#define dTOPnv NV value = TOPn
328#define dPOPnv NV value = POPn
a0d0e21e
LW
329#define dTOPiv IV value = TOPi
330#define dPOPiv IV value = POPi
55497cff
PP
331#define dTOPuv UV value = TOPu
332#define dPOPuv UV value = POPu
1b8cd678 333#ifdef HAS_QUAD
2d4389e4
JH
334#define dTOPqv Quad_t value = TOPu
335#define dPOPqv Quad_t value = POPu
336#define dTOPuqv Uquad_t value = TOPuq
337#define dPOPuqv Uquad_t value = POPuq
338#endif
79072805 339
7a4c00b4 340#define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s)
65202027 341#define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n)
7a4c00b4
PP
342#define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i)
343
344#define USE_LEFT(sv) \
533c011a 345 (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED))
7a4c00b4 346#define dPOPXnnrl_ul(X) \
65202027 347 NV right = POPn; \
7a4c00b4 348 SV *leftsv = CAT2(X,s); \
65202027 349 NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0
7a4c00b4
PP
350#define dPOPXiirl_ul(X) \
351 IV right = POPi; \
352 SV *leftsv = CAT2(X,s); \
353 IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0
354
355#define dPOPPOPssrl dPOPXssrl(POP)
356#define dPOPPOPnnrl dPOPXnnrl(POP)
357#define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP)
358#define dPOPPOPiirl dPOPXiirl(POP)
359#define dPOPPOPiirl_ul dPOPXiirl_ul(POP)
360
361#define dPOPTOPssrl dPOPXssrl(TOP)
362#define dPOPTOPnnrl dPOPXnnrl(TOP)
363#define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP)
364#define dPOPTOPiirl dPOPXiirl(TOP)
365#define dPOPTOPiirl_ul dPOPXiirl_ul(TOP)
79072805 366
3280af22
NIS
367#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
368#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
369#define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef))
79072805 370
3280af22
NIS
371#define RETSETYES RETURNX(SETs(&PL_sv_yes))
372#define RETSETNO RETURNX(SETs(&PL_sv_no))
373#define RETSETUNDEF RETURNX(SETs(&PL_sv_undef))
79072805 374
533c011a 375#define ARGTARG PL_op->op_targ
b162f9ea
IZ
376
377 /* See OPpTARGET_MY: */
378#define MAXARG (PL_op->op_private & 15)
79072805 379
e336de0d
GS
380#define SWITCHSTACK(f,t) \
381 STMT_START { \
677b06e3 382 AvFILLp(f) = sp - PL_stack_base; \
3280af22 383 PL_stack_base = AvARRAY(t); \
677b06e3 384 PL_stack_max = PL_stack_base + AvMAX(t); \
3280af22 385 sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \
677b06e3 386 PL_curstack = t; \
e336de0d 387 } STMT_END
79072805 388
bbce6d69 389#define EXTEND_MORTAL(n) \
677b06e3
GS
390 STMT_START { \
391 if (PL_tmps_ix + (n) >= PL_tmps_max) \
392 tmps_grow(n); \
393 } STMT_END
bbce6d69 394
a0d0e21e
LW
395#define AMGf_noright 1
396#define AMGf_noleft 2
397#define AMGf_assign 4
398#define AMGf_unary 8
399
86547924 400#define tryAMAGICbinW(meth,assign,set) STMT_START { \
3280af22 401 if (PL_amagic_generation) { \
a0d0e21e
LW
402 SV* tmpsv; \
403 SV* right= *(sp); SV* left= *(sp-1);\
404 if ((SvAMAGIC(left)||SvAMAGIC(right))&&\
405 (tmpsv=amagic_call(left, \
406 right, \
407 CAT2(meth,_amg), \
408 (assign)? AMGf_assign: 0))) {\
409 SPAGAIN; \
410 (void)POPs; set(tmpsv); RETURN; } \
411 } \
86547924 412 } STMT_END
a0d0e21e
LW
413
414#define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv)
415#define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs)
416
3280af22 417#define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \
a0d0e21e
LW
418 CAT2(meth,_amg),AMGf_noright | AMGf_unary)
419#define AMG_CALLbinL(left,right,meth) \
420 amagic_call(left,right,CAT2(meth,_amg),AMGf_noright)
421
e8c20960 422#define tryAMAGICunW(meth,set,shift,ret) STMT_START { \
3280af22 423 if (PL_amagic_generation) { \
a0d0e21e 424 SV* tmpsv; \
f5284f61 425 SV* arg= sp[shift]; \
c4459e09 426 if(0) goto am_again; /* shut up unused warning */ \
f5284f61 427 am_again: \
a0d0e21e
LW
428 if ((SvAMAGIC(arg))&&\
429 (tmpsv=AMG_CALLun(arg,meth))) {\
f5284f61 430 SPAGAIN; if (shift) sp += shift; \
e8c20960 431 set(tmpsv); ret; } \
a0d0e21e 432 } \
86547924 433 } STMT_END
a0d0e21e 434
f5284f61
IZ
435#define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END
436
b162f9ea
IZ
437#define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN)
438#define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN)
f5284f61
IZ
439#define tryAMAGICunTARGET(meth, shift) \
440 { dSP; sp--; /* get TARGET from below PL_stack_sp */ \
441 { dTARGETSTACKED; \
e8c20960
IZ
442 { dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}}
443
aacdac46
NIS
444#define setAGAIN(ref) sv = ref; \
445 if (!SvROK(ref)) \
cea2e8a9 446 Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \
aacdac46
NIS
447 if (ref != arg && SvRV(ref) != SvRV(arg)) { \
448 arg = ref; \
449 goto am_again; \
450 }
e8c20960 451
0f4592ef 452#define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0)
a0d0e21e 453
533c011a 454#define opASSIGN (PL_op->op_flags & OPf_STACKED)
e9905555 455#define SETsv(sv) STMT_START { \
b162f9ea
IZ
456 if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \
457 { sv_setsv(TARG, (sv)); SETTARG; } \
458 else SETs(sv); } STMT_END
459
460#define SETsvUN(sv) STMT_START { \
461 if (SvFLAGS(TARG) & SVs_PADMY) \
462 { sv_setsv(TARG, (sv)); SETTARG; } \
e9905555 463 else SETs(sv); } STMT_END
a0d0e21e
LW
464
465/* newSVsv does not behave as advertised, so we copy missing
466 * information by hand */
467
76e3520e
GS
468/* SV* ref causes confusion with the member variable
469 changed SV* ref to SV* tmpRef */
470#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \
471 if (SvREFCNT(tmpRef)>1) { \
29ddfe35 472 SvRV(rv)=AMG_CALLun(rv,copy); \
76e3520e 473 SvREFCNT_dec(tmpRef); \
86547924 474 } } STMT_END
78f9721b
SM
475
476/*
477=for apidoc mU||LVRET
478True if this op will be the return value of an lvalue subroutine
479
480=cut */
9d96b2e7 481#define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub())