X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/b162af07ec759e1ba6b84569e4963bc5c289d75f..2100aa989e1adf82f312119529fa722637e35870:/pp.h diff --git a/pp.h b/pp.h index 221ea89..f1db6b7 100644 --- a/pp.h +++ b/pp.h @@ -1,7 +1,7 @@ /* pp.h * - * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, - * 2000, 2001, 2002, 2003, 2004, 2005 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. @@ -59,17 +59,16 @@ Refetch the stack pointer. Used after a callback. See L. STMT_START { \ if (++PL_markstack_ptr == PL_markstack_max) \ markstack_grow(); \ - *PL_markstack_ptr = (p) - PL_stack_base; \ + *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 @@ -88,7 +87,6 @@ Refetch the stack pointer. Used after a callback. See L. #define NORMAL PL_op->op_next #define DIE return Perl_die -#define DIE_NULL return DieNull /* =for apidoc Ams||PUTBACK @@ -99,16 +97,13 @@ See C and L for other uses. 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. @@ -123,14 +118,15 @@ Pops a long 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)) @@ -145,7 +141,7 @@ Pops a long off the stack. #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)) @@ -228,55 +224,55 @@ called to declare it. Do not call multiple C-oriented macros to return lists from XSUB's - see C instead. See also C and C. +=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. See also C and C. + =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. See also -C, C and C. +element. Does not use C. See also C, C and C. =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 indicates the length of the string. Handles 'set' magic. Does -not use C. See also C, C and C. +The C indicates the length of the string. Does not use C. +See also C, C and C. =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. See also C, C -and C. +Does not use C. See also C, C and C. =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. See also C, C -and C. +Does not use C. See also C, C and C. =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. See also C, -C and C. +element. Does not use C. See also C, C and C. + +=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. See also C and C. =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. See also C, -C and C. +Push a new mortal SV onto the stack, extending the stack if necessary. +Does not use C. See also C, C and C. =for apidoc Am|void|mXPUSHp|char* str|STRLEN len Push a string onto the stack, extending the stack if necessary. The C -indicates the length of the string. Handles 'set' magic. Does not use -C. See also C, C and C. +indicates the length of the string. Does not use C. See also C, +C and C. =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. See also C, C and -C. +Push a double onto the stack, extending the stack if necessary. +Does not use C. See also C, C and C. =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. See also C, C and -C. +Push an integer onto the stack, extending the stack if necessary. +Does not use C. See also C, C and C. =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. See also C, C -and C. +Does not use C. See also C, C and C. =cut */ @@ -286,8 +282,8 @@ and C. } } 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 @@ -307,17 +303,19 @@ and C. #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 @@ -330,6 +328,7 @@ and C. #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 @@ -355,6 +354,10 @@ and C. 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) @@ -365,8 +368,13 @@ and C. #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)) @@ -400,45 +408,79 @@ and C. #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, \ + +/* do SvGETMAGIC on the stack args before checking for overload */ + +#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 + +/* these tryAMAGICun* tryAMAGICbin* macros are no longer used in core + * (except for tryAMAGICunDEREF*, tryAMAGICunTARGET), + * and are only here for backwards compatibility */ + +#define tryAMAGICbinW_var(meth_enum,assign,set) STMT_START { \ + SV* const left = *(sp-1); \ + SV* const right = *(sp); \ + if ((SvAMAGIC(left)||SvAMAGIC(right))) {\ + SV * const tmpsv = amagic_call(left, \ right, \ - CAT2(meth,_amg), \ - (assign)? AMGf_assign: 0))) {\ - SPAGAIN; \ - (void)POPs; set(tmpsv); RETURN; } \ - } \ + (meth_enum), \ + (assign)? AMGf_assign: 0); \ + if (tmpsv) { \ + SPAGAIN; \ + (void)POPs; set(tmpsv); RETURN; } \ + } \ } STMT_END -#define tryAMAGICbin(meth,assign) tryAMAGICbinW(meth,assign,SETsv) +#define tryAMAGICbinW(meth,assign,set) \ + tryAMAGICbinW_var(CAT2(meth,_amg),assign,set) + +#define tryAMAGICbin_var(meth_enum,assign) \ + tryAMAGICbinW_var(meth_enum,assign,SETsv) +#define tryAMAGICbin(meth,assign) \ + tryAMAGICbin_var(CAT2(meth,_amg),assign) + #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 tryAMAGICbinSET_var(meth_enum,assign) \ + tryAMAGICbinW_var(meth_enum,assign,SETs) + +#define AMG_CALLun_var(sv,meth_enum) amagic_call(sv,&PL_sv_undef, \ + meth_enum,AMGf_noright | AMGf_unary) +#define AMG_CALLun(sv,meth) AMG_CALLun_var(sv,CAT2(meth,_amg)) + #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) { \ +#define tryAMAGICunW_var(meth_enum,set,shift,ret) STMT_START { \ 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))) {\ + (tmpsv=AMG_CALLun_var(arg,(meth_enum)))) {\ SPAGAIN; if (shift) sp += shift; \ set(tmpsv); ret; } \ - } \ } STMT_END +#define tryAMAGICunW(meth,set,shift,ret) \ + tryAMAGICunW_var(CAT2(meth,_amg),set,shift,ret) #define FORCE_SETs(sv) STMT_START { sv_setsv(TARG, (sv)); SETTARG; } STMT_END -#define tryAMAGICun(meth) tryAMAGICunW(meth,SETsvUN,0,RETURN) +#define tryAMAGICun_var(meth_enum) tryAMAGICunW_var(meth_enum,SETsvUN,0,RETURN) +#define tryAMAGICun(meth) tryAMAGICun_var(CAT2(meth,_amg)) +#define tryAMAGICunSET_var(meth_enum) tryAMAGICunW_var(meth_enum,SETs,0,RETURN) #define tryAMAGICunSET(meth) tryAMAGICunW(meth,SETs,0,RETURN) #define tryAMAGICunTARGET(meth, shift) \ STMT_START { dSP; sp--; /* get TARGET from below PL_stack_sp */ \ @@ -457,6 +499,42 @@ and C. } STMT_END #define tryAMAGICunDEREF(meth) tryAMAGICunW(meth,setAGAIN,0,(void)0) +#define tryAMAGICunDEREF_var(meth_enum) \ + tryAMAGICunW_var(meth_enum,setAGAIN,0,(void)0) + +/* this macro is obsolete and is only here for backwards compatibility */ + +#define tryAMAGICftest(chr) \ + STMT_START { \ + assert(chr != '?'); \ + SvGETMAGIC(TOPs); \ + if ((PL_op->op_flags & OPf_KIDS) \ + && SvAMAGIC(TOPs)) { \ + const char tmpchr = (chr); \ + SV * const tmpsv = amagic_call(TOPs, \ + newSVpvn_flags(&tmpchr, 1, SVs_TEMP), \ + ftest_amg, AMGf_unary); \ + \ + if (tmpsv) { \ + const OP *next = PL_op->op_next; \ + \ + SPAGAIN; \ + \ + if (next->op_type >= OP_FTRREAD && \ + next->op_type <= OP_FTBINARY && \ + next->op_private & OPpFT_STACKED \ + ) { \ + if (SvTRUE(tmpsv)) \ + /* leave the object alone */ \ + RETURN; \ + } \ + \ + SETs(tmpsv); \ + RETURN; \ + } \ + } \ + } STMT_END + #define opASSIGN (PL_op->op_flags & OPf_STACKED) #define SETsv(sv) STMT_START { \ @@ -474,9 +552,10 @@ and C. /* 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_set(rv, AMG_CALLun(rv,copy)); \ +#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); SV* rv_copy; \ + if (SvREFCNT(tmpRef)>1 && (rv_copy = AMG_CALLun(rv,copy))) { \ + SvRV_set(rv, rv_copy); \ + SvSETMAGIC(rv); \ SvREFCNT_dec(tmpRef); \ } } STMT_END @@ -486,3 +565,22 @@ 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: + */