/* pp.h
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
- * 2000, 2001, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+ * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
=for apidoc AmU||MARK
Stack marker variable for the XSUB. See C<dMARK>.
-=for apidoc Ams||PUSHMARK
+=for apidoc Am|void|PUSHMARK|SP
Opening bracket for arguments on a callback. See C<PUTBACK> and
L<perlcall>.
#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 PUSHMARK(p) \
+ STMT_START { \
+ if (++PL_markstack_ptr == PL_markstack_max) \
+ markstack_grow(); \
+ *PL_markstack_ptr = (I32)((p) - PL_stack_base);\
+ } STMT_END
#define TOPMARK (*PL_markstack_ptr)
#define POPMARK (*PL_markstack_ptr--)
-#define dSP register SV **sp = PL_stack_sp
+#define dSP SV **sp = PL_stack_sp
#define djSP dSP
#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 dORIGMARK const I32 origmark = (I32)(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 MSPAGAIN STMT_START { sp = PL_stack_sp; mark = ORIGMARK; } STMT_END
#define GETTARGETSTACKED targ = (PL_op->op_flags & OPf_STACKED ? POPs : PAD_SV(PL_op->op_targ))
#define dTARGETSTACKED SV * GETTARGETSTACKED
Pops an SV off the stack.
=for apidoc Amn|char*|POPp
-Pops a string off the stack. Deprecated. New code should provide
-a STRLEN n_a and use POPpx.
+Pops a string off the stack. Deprecated. New code should use POPpx.
=for apidoc Amn|char*|POPpx
Pops a string off the stack.
-Requires a variable STRLEN n_a in scope.
=for apidoc Amn|char*|POPpbytex
Pops a string off the stack which must consist of bytes i.e. characters < 256.
-Requires a variable STRLEN n_a in scope.
=for apidoc Amn|NV|POPn
Pops a double off the stack.
*/
#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 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 POPpbytex (SvPVbytex(POPs, n_a))
+#define POPpx (SvPVx_nolen(POPs))
+#define POPpconstx (SvPVx_nolen_const(POPs))
+#define POPpbytex (SvPVbytex_nolen(POPs))
#define POPn (SvNVx(POPs))
#define POPi ((IV)SvIVx(POPs))
#define POPu ((UV)SvUVx(POPs))
#define TOPm1s (*(sp-1))
#define TOPp1s (*(sp+1))
#define TOPp (SvPV(TOPs, PL_na)) /* deprecated */
-#define TOPpx (SvPV(TOPs, n_a))
+#define TOPpx (SvPV_nolen(TOPs))
#define TOPn (SvNV(TOPs))
#define TOPi ((IV)SvIV(TOPs))
#define TOPu ((UV)SvUV(TOPs))
return lists from XSUB's - see C<mXPUSHu> instead. See also C<PUSHu> and
C<mPUSHu>.
+=for apidoc Am|void|mPUSHs|SV* sv
+Push an SV onto the stack and mortalizes the SV. The stack must have room
+for this element. Does not use C<TARG>. See also C<PUSHs> and C<mXPUSHs>.
+
=for apidoc Am|void|PUSHmortal
Push a new mortal SV onto the stack. The stack must have room for this
-element. Does not handle 'set' magic. Does not use C<TARG>. See also
-C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
+element. Does not use C<TARG>. See also C<PUSHs>, C<XPUSHmortal> and C<XPUSHs>.
=for apidoc Am|void|mPUSHp|char* str|STRLEN len
Push a string onto the stack. The stack must have room for this element.
-The C<len> indicates the length of the string. Handles 'set' magic. Does
-
not use C<TARG>. See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
+The C<len> indicates the length of the string. Does not use C<TARG>.
+See also C<PUSHp>, C<mXPUSHp> and C<XPUSHp>.
=for apidoc Am|void|mPUSHn|NV nv
Push a double onto the stack. The stack must have room for this element.
-Handles 'set' magic. Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn>
-and C<XPUSHn>.
+Does not use C<TARG>. See also C<PUSHn>, C<mXPUSHn> and C<XPUSHn>.
=for apidoc Am|void|mPUSHi|IV iv
Push an integer onto the stack. The stack must have room for this element.
-Handles 'set' magic. Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi>
-and C<XPUSHi>.
+Does not use C<TARG>. See also C<PUSHi>, C<mXPUSHi> and C<XPUSHi>.
=for apidoc Am|void|mPUSHu|UV uv
Push an unsigned integer onto the stack. The stack must have room for this
-element. Handles 'set' magic. Does not use C<TARG>. See also C<PUSHu>,
-C<mXPUSHu> and C<XPUSHu>.
+element. Does not use C<TARG>. See also C<PUSHu>, C<mXPUSHu> and C<XPUSHu>.
+
+=for apidoc Am|void|mXPUSHs|SV* sv
+Push an SV onto the stack, extending the stack if necessary and mortalizes
+the SV. Does not use C<TARG>. See also C<XPUSHs> and C<mPUSHs>.
=for apidoc Am|void|XPUSHmortal
-Push a new mortal SV onto the stack, extending the stack if necessary. Does
-not handle 'set' magic. Does not use C<TARG>. See also C<XPUSHs>,
-C<PUSHmortal> and C<PUSHs>.
+Push a new mortal SV onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHs>, C<PUSHmortal> and C<PUSHs>.
=for apidoc Am|void|mXPUSHp|char* str|STRLEN len
Push a string onto the stack, extending the stack if necessary. The C<len>
-indicates the length of the string. Handles 'set' magic. Does not use
-C<
TARG>. See also C<XPUSHp>, C<mPUSHp> and C<PUSHp>.
+indicates the length of the string. Does not use C<TARG>. See also C<XPUSHp>,
+C<mPUSHp> and C<PUSHp>.
=for apidoc Am|void|mXPUSHn|NV nv
-Push a double onto the stack, extending the stack if necessary. Handles
-'set' magic. Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and
-C<PUSHn>.
+Push a double onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHn>, C<mPUSHn> and C<PUSHn>.
=for apidoc Am|void|mXPUSHi|IV iv
-Push an integer onto the stack, extending the stack if necessary. Handles
-'set' magic. Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and
-C<PUSHi>.
+Push an integer onto the stack, extending the stack if necessary.
+Does not use C<TARG>. See also C<XPUSHi>, C<mPUSHi> and C<PUSHi>.
=for apidoc Am|void|mXPUSHu|UV uv
Push an unsigned integer onto the stack, extending the stack if necessary.
-Handles 'set' magic. Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu>
-and C<PUSHu>.
+Does not use C<TARG>. See also C<XPUSHu>, C<mPUSHu> and C<PUSHu>.
=cut
*/
} } STMT_END
/* Same thing, but update mark register too. */
-#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \
- int markoff = mark - PL_stack_base; \
+#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \
+ const int markoff = mark - PL_stack_base; \
sp = stack_grow(sp,p,(int) (n)); \
mark = PL_stack_base + markoff; \
} } 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 mPUSHs(s) PUSHs(sv_2mortal(s))
#define PUSHmortal PUSHs(sv_newmortal())
-#define mPUSHp(p,l) sv_setpvn_mg(PUSHmortal, (p), (l))
-#define mPUSHn(n) sv_setnv_mg(PUSHmortal, (NV)(n))
-#define mPUSHi(i) sv_setiv_mg(PUSHmortal, (IV)(i))
-#define mPUSHu(u) sv_setuv_mg(PUSHmortal, (UV)(u))
+#define mPUSHp(p,l) PUSHs(newSVpvn_flags((p), (l), SVs_TEMP))
+#define mPUSHn(n) sv_setnv(PUSHmortal, (NV)(n))
+#define mPUSHi(i) sv_setiv(PUSHmortal, (IV)(i))
+#define mPUSHu(u) sv_setuv(PUSHmortal, (UV)(u))
+#define mXPUSHs(s) XPUSHs(sv_2mortal(s))
#define XPUSHmortal XPUSHs(sv_newmortal())
-#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); sv_setpvn_mg(PUSHmortal, (p), (l)); } STMT_END
-#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv_mg(PUSHmortal, (NV)(n)); } STMT_END
-#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv_mg(PUSHmortal, (IV)(i)); } STMT_END
-#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv_mg(PUSHmortal, (UV)(u)); } STMT_END
+#define mXPUSHp(p,l) STMT_START { EXTEND(sp,1); mPUSHp((p), (l)); } STMT_END
+#define mXPUSHn(n) STMT_START { EXTEND(sp,1); sv_setnv(PUSHmortal, (NV)(n)); } STMT_END
+#define mXPUSHi(i) STMT_START { EXTEND(sp,1); sv_setiv(PUSHmortal, (IV)(i)); } STMT_END
+#define mXPUSHu(u) STMT_START { EXTEND(sp,1); sv_setuv(PUSHmortal, (UV)(u)); } STMT_END
#define SETs(s) (*sp = s)
#define SETTARG STMT_START { SvSETMAGIC(TARG); SETs(TARG); } STMT_END
#define dPOPss SV *sv = POPs
#define dTOPnv NV value = TOPn
#define dPOPnv NV value = POPn
+#define dPOPnv_nomg NV value = (sp--, SvNV_nomg(TOPp1s))
#define dTOPiv IV value = TOPi
#define dPOPiv IV value = POPi
#define dTOPuv UV value = TOPu
IV right = POPi; \
SV *leftsv = CAT2(X,s); \
IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0
+#define dPOPXiirl_ul_nomg(X) \
+ IV right = POPi; \
+ SV *leftsv = CAT2(X,s); \
+ IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0
#define dPOPPOPssrl dPOPXssrl(POP)
#define dPOPPOPnnrl dPOPXnnrl(POP)
#define dPOPTOPssrl dPOPXssrl(TOP)
#define dPOPTOPnnrl dPOPXnnrl(TOP)
#define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP)
+#define dPOPTOPnnrl_nomg \
+ NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs))
#define dPOPTOPiirl dPOPXiirl(TOP)
#define dPOPTOPiirl_ul dPOPXiirl_ul(TOP)
+#define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP)
+#define dPOPTOPiirl_nomg \
+ IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs))
#define RETPUSHYES RETURNX(PUSHs(&PL_sv_yes))
#define RETPUSHNO RETURNX(PUSHs(&PL_sv_no))
#define AMGf_noleft 2
#define AMGf_assign 4
#define AMGf_unary 8
+#define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */
+#define AMGf_set 0x20 /* for Perl_try_amagic_bin */
-#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]; \
- if(0) goto am_again; /* shut up unused warning */ \
- am_again: \
- if ((SvAMAGIC(arg))&&\
- (tmpsv=AMG_CALLun(arg,meth))) {\
- SPAGAIN; if (shift) sp += shift; \
- set(tmpsv); ret; } \
- } \
- } STMT_END
+/* do SvGETMAGIC on the stack args before checking for overload */
-#define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END
+#define tryAMAGICun_MG(method, flags) STMT_START { \
+ if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \
+ && Perl_try_amagic_un(aTHX_ method, flags)) \
+ return NORMAL; \
+ } STMT_END
+#define tryAMAGICbin_MG(method, flags) STMT_START { \
+ if ( ((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG)) \
+ && Perl_try_amagic_bin(aTHX_ method, flags)) \
+ return NORMAL; \
+ } 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 AMG_CALLunary(sv,meth) \
+ amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary)
+
+/* No longer used in core. Use AMG_CALLunary instead */
+#define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg))
+
+#define tryAMAGICunTARGET(meth, shift, jump) \
+ STMT_START { \
+ dATARGET; \
+ dSP; \
+ SV *tmpsv; \
+ SV *arg= sp[shift]; \
+ if (SvAMAGIC(arg) && \
+ (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \
+ AMGf_noright | AMGf_unary))) { \
+ SPAGAIN; \
+ sp += shift; \
+ sv_setsv(TARG, tmpsv); \
+ if (opASSIGN) \
+ sp--; \
+ SETTARG; \
+ PUTBACK; \
+ if (jump) { \
+ PL_markstack_ptr--; \
+ return NORMAL->op_next->op_next; \
+ } \
+ return NORMAL; \
+ } \
+ } STMT_END
-#define setAGAIN(ref) sv = ref; \
- if (!SvROK(ref)) \
- Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \
- if (ref != arg && SvRV(ref) != SvRV(arg)) { \
- arg = ref; \
- goto am_again; \
- }
+/* This is no longer used anywhere in the core. You might wish to consider
+ calling amagic_deref_call() directly, as it has a cleaner interface. */
+#define tryAMAGICunDEREF(meth) \
+ STMT_START { \
+ sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \
+ SPAGAIN; \
+ } STMT_END
-#define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0)
#define opASSIGN (PL_op->op_flags & OPf_STACKED)
#define SETsv(sv) STMT_START { \
{ 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) { \
- SvRV(rv)=AMG_CALLun(rv,copy); \
- SvREFCNT_dec(tmpRef); \
- } } STMT_END
-
/*
=for apidoc mU||LVRET
True if this op will be the return value of an lvalue subroutine
=cut */
#define LVRET ((PL_op->op_private & OPpMAYBE_LVSUB) && is_lvalue_sub())
+
+#define SvCANEXISTDELETE(sv) \
+ (!SvRMAGICAL(sv) \
+ || ((mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \
+ && (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \
+ && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \
+ && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \
+ ) \
+ )
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
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