[perl5.git] / pp.h

/*    pp.h
 *
 *    Copyright (c) 1991-1999, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

#ifdef USE_THREADS
#define ARGS thr
#define dARGS struct perl_thread *thr;
#else
#define ARGS
#define dARGS
#endif /* USE_THREADS */

#define PP(s) OP * Perl_##s(pTHX)

#define SP sp
#define MARK mark
#define TARG targ

#define PUSHMARK(p) if (++PL_markstack_ptr == PL_markstack_max)	\
			markstack_grow();			\
		    *PL_markstack_ptr = (p) - PL_stack_base

#define TOPMARK		(*PL_markstack_ptr)
#define POPMARK		(*PL_markstack_ptr--)

#define djSP		register SV **sp = PL_stack_sp
#define dSP		dTHR; djSP
#define dMARK		register SV **mark = PL_stack_base + POPMARK
#define dORIGMARK	I32 origmark = mark - PL_stack_base
#define SETORIGMARK	origmark = mark - PL_stack_base
#define ORIGMARK	(PL_stack_base + origmark)

#define SPAGAIN		sp = PL_stack_sp
#define MSPAGAIN	sp = PL_stack_sp; mark = ORIGMARK

#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
#define dTARGETSTACKED SV * GETTARGETSTACKED

#define GETTARGET targ = PAD_SV(PL_op->op_targ)
#define dTARGET SV * GETTARGET

#define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ))
#define dATARGET SV * GETATARGET

#define dTARG SV *targ

#define NORMAL PL_op->op_next
#define DIE return Perl_die

#define PUTBACK		PL_stack_sp = sp
#define RETURN		return PUTBACK, NORMAL
#define RETURNOP(o)	return PUTBACK, o
#define RETURNX(x)	return x, PUTBACK, NORMAL

#define POPs		(*sp--)
#define POPp		(SvPVx(POPs, PL_na))		/* deprecated */
#define POPpx		(SvPVx(POPs, n_a))
#define POPn		(SvNVx(POPs))
#define POPi		((IV)SvIVx(POPs))
#define POPu		((UV)SvUVx(POPs))
#define POPl		((long)SvIVx(POPs))

#define TOPs		(*sp)
#define TOPp		(SvPV(TOPs, PL_na))		/* deprecated */
#define TOPpx		(SvPV(TOPs, n_a))
#define TOPn		(SvNV(TOPs))
#define TOPi		((IV)SvIV(TOPs))
#define TOPu		((UV)SvUV(TOPs))
#define TOPl		((long)SvIV(TOPs))

/* Go to some pains in the rare event that we must extend the stack. */
#define EXTEND(p,n)	STMT_START { if (PL_stack_max - p < (n)) {		\
			    sp = stack_grow(sp,p, (int) (n));		\
			} } STMT_END

/* Same thing, but update mark register too. */
#define MEXTEND(p,n)	STMT_START {if (PL_stack_max - p < (n)) {		\
			    int markoff = mark - PL_stack_base;		\
			    sp = stack_grow(sp,p,(int) (n));		\
			    mark = PL_stack_base + markoff;		\
			} } STMT_END

#define PUSHs(s)	(*++sp = (s))
#define PUSHTARG	STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
#define PUSHp(p,l)	STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
#define PUSHn(n)	STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END
#define PUSHi(i)	STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END
#define PUSHu(u)	STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END

#define XPUSHs(s)	STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END
#define XPUSHTARG	STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
#define XPUSHp(p,l)	STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
#define XPUSHn(n)	STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END
#define XPUSHi(i)	STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END
#define XPUSHu(u)	STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END
#define XPUSHundef	STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END

#define SETs(s)		(*sp = s)
#define SETTARG		STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
#define SETp(p,l)	STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
#define SETn(n)		STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END
#define SETi(i)		STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END
#define SETu(u)		STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END

#define dTOPss		SV *sv = TOPs
#define dPOPss		SV *sv = POPs
#define dTOPnv		NV value = TOPn
#define dPOPnv		NV value = POPn
#define dTOPiv		IV value = TOPi
#define dPOPiv		IV value = POPi
#define dTOPuv		UV value = TOPu
#define dPOPuv		UV value = POPu

#define dPOPXssrl(X)	SV *right = POPs; SV *left = CAT2(X,s)
#define dPOPXnnrl(X)	NV right = POPn; NV left = CAT2(X,n)
#define dPOPXiirl(X)	IV right = POPi; IV left = CAT2(X,i)

#define USE_LEFT(sv) \
	(SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED))
#define dPOPXnnrl_ul(X)	\
    NV right = POPn;				\
    SV *leftsv = CAT2(X,s);				\
    NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0
#define dPOPXiirl_ul(X) \
    IV right = POPi;					\
    SV *leftsv = CAT2(X,s);				\
    IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0

#define dPOPPOPssrl	dPOPXssrl(POP)
#define dPOPPOPnnrl	dPOPXnnrl(POP)
#define dPOPPOPnnrl_ul	dPOPXnnrl_ul(POP)
#define dPOPPOPiirl	dPOPXiirl(POP)
#define dPOPPOPiirl_ul	dPOPXiirl_ul(POP)

#define dPOPTOPssrl	dPOPXssrl(TOP)
#define dPOPTOPnnrl	dPOPXnnrl(TOP)
#define dPOPTOPnnrl_ul	dPOPXnnrl_ul(TOP)
#define dPOPTOPiirl	dPOPXiirl(TOP)
#define dPOPTOPiirl_ul	dPOPXiirl_ul(TOP)

#define RETPUSHYES	RETURNX(PUSHs(&PL_sv_yes))
#define RETPUSHNO	RETURNX(PUSHs(&PL_sv_no))
#define RETPUSHUNDEF	RETURNX(PUSHs(&PL_sv_undef))

#define RETSETYES	RETURNX(SETs(&PL_sv_yes))
#define RETSETNO	RETURNX(SETs(&PL_sv_no))
#define RETSETUNDEF	RETURNX(SETs(&PL_sv_undef))

#define ARGTARG		PL_op->op_targ

    /* See OPpTARGET_MY: */
#define MAXARG		(PL_op->op_private & 15)

#define SWITCHSTACK(f,t) \
    STMT_START {							\
	AvFILLp(f) = sp - PL_stack_base;				\
	PL_stack_base = AvARRAY(t);					\
	PL_stack_max = PL_stack_base + AvMAX(t);			\
	sp = PL_stack_sp = PL_stack_base + AvFILLp(t);			\
	PL_curstack = t;						\
    } STMT_END

#define EXTEND_MORTAL(n) \
    STMT_START {							\
	if (PL_tmps_ix + (n) >= PL_tmps_max)				\
	    tmps_grow(n);						\
    } STMT_END

#define AMGf_noright	1
#define AMGf_noleft	2
#define AMGf_assign	4
#define AMGf_unary	8

#define tryAMAGICbinW(meth,assign,set) STMT_START { \
          if (PL_amagic_generation) { \
	    SV* tmpsv; \
	    SV* right= *(sp); SV* left= *(sp-1);\
	    if ((SvAMAGIC(left)||SvAMAGIC(right))&&\
		(tmpsv=amagic_call(left, \
				   right, \
				   CAT2(meth,_amg), \
				   (assign)? AMGf_assign: 0))) {\
	       SPAGAIN;	\
	       (void)POPs; set(tmpsv); RETURN; } \
	  } \
	} STMT_END

#define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv)
#define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs)

#define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef,  \
					CAT2(meth,_amg),AMGf_noright | AMGf_unary)
#define AMG_CALLbinL(left,right,meth) \
            amagic_call(left,right,CAT2(meth,_amg),AMGf_noright)

#define tryAMAGICunW(meth,set,shift,ret) STMT_START { \
          if (PL_amagic_generation) { \
	    SV* tmpsv; \
	    SV* arg= sp[shift]; \
	  am_again: \
	    if ((SvAMAGIC(arg))&&\
		(tmpsv=AMG_CALLun(arg,meth))) {\
	       SPAGAIN; if (shift) sp += shift; \
	       set(tmpsv); ret; } \
	  } \
	} STMT_END

#define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END

#define tryAMAGICun(meth)	tryAMAGICunW(meth,SETsvUN,0,RETURN)
#define tryAMAGICunSET(meth)	tryAMAGICunW(meth,SETs,0,RETURN)
#define tryAMAGICunTARGET(meth, shift)					\
	{ dSP; sp--; 	/* get TARGET from below PL_stack_sp */		\
	    { dTARGETSTACKED; 						\
		{ dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}}

#define setAGAIN(ref) sv = arg = ref;					\
  if (!SvROK(ref))							\
      Perl_croak(aTHX_ "Overloaded dereference did not return a reference");	\
  goto am_again;

#define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0)

#define opASSIGN (PL_op->op_flags & OPf_STACKED)
#define SETsv(sv)	STMT_START {					\
		if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY))		\
		   { sv_setsv(TARG, (sv)); SETTARG; }			\
		else SETs(sv); } STMT_END

#define SETsvUN(sv)	STMT_START {					\
		if (SvFLAGS(TARG) & SVs_PADMY)		\
		   { sv_setsv(TARG, (sv)); SETTARG; }			\
		else SETs(sv); } STMT_END

/* newSVsv does not behave as advertised, so we copy missing
 * information by hand */

/* SV* ref causes confusion with the member variable
   changed SV* ref to SV* tmpRef */
#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv);      \
  if (SvREFCNT(tmpRef)>1) {                 \
    SvREFCNT_dec(tmpRef);                   \
    SvRV(rv)=AMG_CALLun(rv,copy);        \
  } } STMT_END
Commit	Line	Data
a0d0e21e	1	/* pp.h
79072805	2	*
4eb8286e	3	* Copyright (c) 1991-1999, Larry Wall
79072805	4	*
a0d0e21e LW	5	* You may distribute under the terms of either the GNU General Public
a0d0e21e LW	6	* License or the Artistic License, as specified in the README file.
79072805	7	*
a0d0e21e	8	*/
79072805	9
11343788 MB	10	#ifdef USE_THREADS
11343788 MB	11	#define ARGS thr
52e1cb5e	12	#define dARGS struct perl_thread *thr;
11343788	13	#else
79072805	14	#define ARGS
79072805	15	#define dARGS
11343788	16	#endif /* USE_THREADS */
22c35a8c	17
cea2e8a9	18	#define PP(s) OP * Perl_##s(pTHX)
79072805 LW	19
	20	#define SP sp
	21	#define MARK mark
	22	#define TARG targ
	23
3280af22	24	#define PUSHMARK(p) if (++PL_markstack_ptr == PL_markstack_max) \
a0d0e21e	25	markstack_grow(); \
3280af22	26	*PL_markstack_ptr = (p) - PL_stack_base
a0d0e21e	27
3280af22 NIS	28	#define TOPMARK (*PL_markstack_ptr)
3280af22 NIS	29	#define POPMARK (*PL_markstack_ptr--)
a0d0e21e	30
3280af22	31	#define djSP register SV **sp = PL_stack_sp
4e35701f	32	#define dSP dTHR; djSP
3280af22 NIS	33	#define dMARK register SV **mark = PL_stack_base + POPMARK
	34	#define dORIGMARK I32 origmark = mark - PL_stack_base
	35	#define SETORIGMARK origmark = mark - PL_stack_base
	36	#define ORIGMARK (PL_stack_base + origmark)
79072805	37
3280af22 NIS	38	#define SPAGAIN sp = PL_stack_sp
3280af22 NIS	39	#define MSPAGAIN sp = PL_stack_sp; mark = ORIGMARK
79072805	40
533c011a	41	#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
79072805 LW	42	#define dTARGETSTACKED SV * GETTARGETSTACKED
79072805 LW	43
533c011a	44	#define GETTARGET targ = PAD_SV(PL_op->op_targ)
79072805 LW	45	#define dTARGET SV * GETTARGET
79072805 LW	46
533c011a	47	#define GETATARGET targ = (PL_op->op_flags & OPf_STACKED ? sp[-1] : PAD_SV(PL_op->op_targ))
79072805 LW	48	#define dATARGET SV * GETATARGET
	49
	50	#define dTARG SV *targ
	51
533c011a	52	#define NORMAL PL_op->op_next
cea2e8a9	53	#define DIE return Perl_die
79072805	54
3280af22	55	#define PUTBACK PL_stack_sp = sp
79072805 LW	56	#define RETURN return PUTBACK, NORMAL
	57	#define RETURNOP(o) return PUTBACK, o
	58	#define RETURNX(x) return x, PUTBACK, NORMAL
	59
	60	#define POPs (*sp--)
2d8e6c8d GS	61	#define POPp (SvPVx(POPs, PL_na)) /* deprecated */
2d8e6c8d GS	62	#define POPpx (SvPVx(POPs, n_a))
463ee0b2	63	#define POPn (SvNVx(POPs))
a0d0e21e	64	#define POPi ((IV)SvIVx(POPs))
ff68c719	65	#define POPu ((UV)SvUVx(POPs))
463ee0b2	66	#define POPl ((long)SvIVx(POPs))
79072805 LW	67
79072805 LW	68	#define TOPs (*sp)
2d8e6c8d GS	69	#define TOPp (SvPV(TOPs, PL_na)) /* deprecated */
2d8e6c8d GS	70	#define TOPpx (SvPV(TOPs, n_a))
463ee0b2	71	#define TOPn (SvNV(TOPs))
a0d0e21e	72	#define TOPi ((IV)SvIV(TOPs))
ff68c719	73	#define TOPu ((UV)SvUV(TOPs))
463ee0b2	74	#define TOPl ((long)SvIV(TOPs))
79072805 LW	75
79072805 LW	76	/* Go to some pains in the rare event that we must extend the stack. */
3280af22	77	#define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (n)) { \
bbce6d69	78	sp = stack_grow(sp,p, (int) (n)); \
86547924	79	} } STMT_END
a0d0e21e	80
79072805	81	/* Same thing, but update mark register too. */
3280af22 NIS	82	#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (n)) { \
3280af22 NIS	83	int markoff = mark - PL_stack_base; \
bbce6d69	84	sp = stack_grow(sp,p,(int) (n)); \
3280af22	85	mark = PL_stack_base + markoff; \
86547924	86	} } STMT_END
79072805 LW	87
79072805 LW	88	#define PUSHs(s) (*++sp = (s))
86547924	89	#define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END
86547924	90	#define PUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); PUSHTARG; } STMT_END
65202027	91	#define PUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); PUSHTARG; } STMT_END
86547924	92	#define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END
55497cff	93	#define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END
79072805	94
86547924	95	#define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END
	96	#define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END
	97	#define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END
65202027	98	#define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END
86547924	99	#define XPUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); XPUSHTARG; } STMT_END
55497cff	100	#define XPUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); XPUSHTARG; } STMT_END
b162f9ea	101	#define XPUSHundef STMT_START { SvOK_off(TARG); XPUSHs(TARG); } STMT_END
79072805 LW	102
79072805 LW	103	#define SETs(s) (*sp = s)
86547924	104	#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
86547924	105	#define SETp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); SETTARG; } STMT_END
65202027	106	#define SETn(n) STMT_START { sv_setnv(TARG, (NV)(n)); SETTARG; } STMT_END
86547924	107	#define SETi(i) STMT_START { sv_setiv(TARG, (IV)(i)); SETTARG; } STMT_END
55497cff	108	#define SETu(u) STMT_START { sv_setuv(TARG, (UV)(u)); SETTARG; } STMT_END
a0d0e21e	109
79072805 LW	110	#define dTOPss SV *sv = TOPs
79072805 LW	111	#define dPOPss SV *sv = POPs
65202027 DS	112	#define dTOPnv NV value = TOPn
65202027 DS	113	#define dPOPnv NV value = POPn
a0d0e21e LW	114	#define dTOPiv IV value = TOPi
a0d0e21e LW	115	#define dPOPiv IV value = POPi
55497cff	116	#define dTOPuv UV value = TOPu
55497cff	117	#define dPOPuv UV value = POPu
79072805	118
7a4c00b4	119	#define dPOPXssrl(X) SV right = POPs; SV left = CAT2(X,s)
65202027	120	#define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n)
7a4c00b4	121	#define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i)
	122
	123	#define USE_LEFT(sv) \
533c011a	124	(SvOK(sv) \|\| SvGMAGICAL(sv) \|\| !(PL_op->op_flags & OPf_STACKED))
7a4c00b4	125	#define dPOPXnnrl_ul(X) \
65202027	126	NV right = POPn; \
7a4c00b4	127	SV *leftsv = CAT2(X,s); \
65202027	128	NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0
7a4c00b4	129	#define dPOPXiirl_ul(X) \
	130	IV right = POPi; \
	131	SV *leftsv = CAT2(X,s); \
	132	IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0
	133
	134	#define dPOPPOPssrl dPOPXssrl(POP)
	135	#define dPOPPOPnnrl dPOPXnnrl(POP)
	136	#define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP)
	137	#define dPOPPOPiirl dPOPXiirl(POP)
	138	#define dPOPPOPiirl_ul dPOPXiirl_ul(POP)
	139
	140	#define dPOPTOPssrl dPOPXssrl(TOP)
	141	#define dPOPTOPnnrl dPOPXnnrl(TOP)
	142	#define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP)
	143	#define dPOPTOPiirl dPOPXiirl(TOP)
	144	#define dPOPTOPiirl_ul dPOPXiirl_ul(TOP)
79072805	145
3280af22 NIS	146	#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
	147	#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
	148	#define RETPUSHUNDEF RETURNX(PUSHs(&PL_sv_undef))
79072805	149
3280af22 NIS	150	#define RETSETYES RETURNX(SETs(&PL_sv_yes))
	151	#define RETSETNO RETURNX(SETs(&PL_sv_no))
	152	#define RETSETUNDEF RETURNX(SETs(&PL_sv_undef))
79072805	153
533c011a	154	#define ARGTARG PL_op->op_targ
b162f9ea IZ	155
	156	/* See OPpTARGET_MY: */
	157	#define MAXARG (PL_op->op_private & 15)
79072805	158
e336de0d GS	159	#define SWITCHSTACK(f,t) \
e336de0d GS	160	STMT_START { \
677b06e3	161	AvFILLp(f) = sp - PL_stack_base; \
3280af22	162	PL_stack_base = AvARRAY(t); \
677b06e3	163	PL_stack_max = PL_stack_base + AvMAX(t); \
3280af22	164	sp = PL_stack_sp = PL_stack_base + AvFILLp(t); \
677b06e3	165	PL_curstack = t; \
e336de0d	166	} STMT_END
79072805	167
bbce6d69	168	#define EXTEND_MORTAL(n) \
677b06e3 GS	169	STMT_START { \
	170	if (PL_tmps_ix + (n) >= PL_tmps_max) \
	171	tmps_grow(n); \
	172	} STMT_END
bbce6d69	173
a0d0e21e LW	174	#define AMGf_noright 1
	175	#define AMGf_noleft 2
	176	#define AMGf_assign 4
	177	#define AMGf_unary 8
	178
86547924	179	#define tryAMAGICbinW(meth,assign,set) STMT_START { \
3280af22	180	if (PL_amagic_generation) { \
a0d0e21e LW	181	SV* tmpsv; \
	182	SV* right= (sp); SV left= *(sp-1);\
	183	if ((SvAMAGIC(left)\|\|SvAMAGIC(right))&&\
	184	(tmpsv=amagic_call(left, \
	185	right, \
	186	CAT2(meth,_amg), \
	187	(assign)? AMGf_assign: 0))) {\
	188	SPAGAIN; \
	189	(void)POPs; set(tmpsv); RETURN; } \
	190	} \
86547924	191	} STMT_END
a0d0e21e LW	192
	193	#define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv)
	194	#define tryAMAGICbinSET(meth,assign) tryAMAGICbinW(meth,assign,SETs)
	195
3280af22	196	#define AMG_CALLun(sv,meth) amagic_call(sv,&PL_sv_undef, \
a0d0e21e LW	197	CAT2(meth,_amg),AMGf_noright \| AMGf_unary)
	198	#define AMG_CALLbinL(left,right,meth) \
	199	amagic_call(left,right,CAT2(meth,_amg),AMGf_noright)
	200
e8c20960	201	#define tryAMAGICunW(meth,set,shift,ret) STMT_START { \
3280af22	202	if (PL_amagic_generation) { \
a0d0e21e	203	SV* tmpsv; \
f5284f61 IZ	204	SV* arg= sp[shift]; \
f5284f61 IZ	205	am_again: \
a0d0e21e LW	206	if ((SvAMAGIC(arg))&&\
a0d0e21e LW	207	(tmpsv=AMG_CALLun(arg,meth))) {\
f5284f61	208	SPAGAIN; if (shift) sp += shift; \
e8c20960	209	set(tmpsv); ret; } \
a0d0e21e	210	} \
86547924	211	} STMT_END
a0d0e21e	212
f5284f61 IZ	213	#define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END
f5284f61 IZ	214
b162f9ea IZ	215	#define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN)
b162f9ea IZ	216	#define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN)
f5284f61 IZ	217	#define tryAMAGICunTARGET(meth, shift) \
	218	{ dSP; sp--; /* get TARGET from below PL_stack_sp */ \
	219	{ dTARGETSTACKED; \
e8c20960 IZ	220	{ dSP; tryAMAGICunW(meth,FORCE_SETs,shift,RETURN);}}}
	221
	222	#define setAGAIN(ref) sv = arg = ref; \
	223	if (!SvROK(ref)) \
cea2e8a9	224	Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \
e8c20960 IZ	225	goto am_again;
e8c20960 IZ	226
0f4592ef	227	#define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0)
a0d0e21e	228
533c011a	229	#define opASSIGN (PL_op->op_flags & OPf_STACKED)
e9905555	230	#define SETsv(sv) STMT_START { \
b162f9ea IZ	231	if (opASSIGN \|\| (SvFLAGS(TARG) & SVs_PADMY)) \
	232	{ sv_setsv(TARG, (sv)); SETTARG; } \
	233	else SETs(sv); } STMT_END
	234
	235	#define SETsvUN(sv) STMT_START { \
	236	if (SvFLAGS(TARG) & SVs_PADMY) \
	237	{ sv_setsv(TARG, (sv)); SETTARG; } \
e9905555	238	else SETs(sv); } STMT_END
a0d0e21e LW	239
	240	/* newSVsv does not behave as advertised, so we copy missing
	241	* information by hand */
	242
76e3520e GS	243	/* SV* ref causes confusion with the member variable
	244	changed SV* ref to SV* tmpRef */
	245	#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); \
	246	if (SvREFCNT(tmpRef)>1) { \
	247	SvREFCNT_dec(tmpRef); \
748a9306	248	SvRV(rv)=AMG_CALLun(rv,copy); \
86547924	249	} } STMT_END