X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/463ee0b2acbd047c27e8b5393cdd8398881824c5..5e148d076aa31058960598f241daa61f83b160be:/gv.h diff --git a/gv.h b/gv.h index e6b6878..87370ed 100644 --- a/gv.h +++ b/gv.h @@ -1,27 +1,11 @@ -/* $RCSfile: gv.h,v $$Revision: 4.1 $$Date: 92/08/07 18:26:42 $ +/* gv.h * - * Copyright (c) 1991, Larry Wall + * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + * 2000, 2001, 2002, 2003, 2004, 2005, 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. * - * $Log: gv.h,v $ - * Revision 4.1 92/08/07 18:26:42 lwall - * - * Revision 4.0.1.3 92/06/08 15:33:44 lwall - * patch20: fixed confusion between a *var's real name and its effective name - * patch20: ($<,$>) = ... didn't work on some architectures - * - * Revision 4.0.1.2 91/11/05 18:36:15 lwall - * patch11: length($x) was sometimes wrong for numeric $x - * - * Revision 4.0.1.1 91/06/07 11:56:35 lwall - * patch4: new copyright notice - * patch4: length($`), length($&), length($') now optimized to avoid string copy - * - * Revision 4.0 91/03/20 01:39:49 lwall - * 4.0 baseline. - * */ struct gp { @@ -30,91 +14,128 @@ struct gp { struct io * gp_io; /* filehandle value */ CV * gp_form; /* format value */ AV * gp_av; /* array value */ - HV * gp_hv; /* associative array value */ + HV * gp_hv; /* hash value */ GV * gp_egv; /* effective gv, if *glob */ CV * gp_cv; /* subroutine value */ U32 gp_cvgen; /* generational validity of cached gv_cv */ - I32 gp_lastexpr; /* used by nothing_in_common() */ line_t gp_line; /* line first declared at (for -w) */ - char gp_flags; + char * gp_file; /* file first declared in (for -w) */ }; -#if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) -#define MICROPORT -#endif - #define GvXPVGV(gv) ((XPVGV*)SvANY(gv)) -#define GvMAGIC(gv) (GvGP(gv)->gp_magic) +#define GvGP(gv) (GvXPVGV(gv)->xgv_gp) +#define GvNAME(gv) (GvXPVGV(gv)->xgv_name) +#define GvNAMELEN(gv) (GvXPVGV(gv)->xgv_namelen) +#define GvSTASH(gv) (GvXPVGV(gv)->xgv_stash) +#define GvFLAGS(gv) (GvXPVGV(gv)->xgv_flags) + +/* +=head1 GV Functions + +=for apidoc Am|SV*|GvSV|GV* gv + +Return the SV from the GV. + +=cut +*/ + #define GvSV(gv) (GvGP(gv)->gp_sv) +#ifdef PERL_DONT_CREATE_GVSV +#define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \ + &(GvGP(gv)->gp_sv) : \ + &(GvGP(gv_SVadd(gv))->gp_sv))) +#else +#define GvSVn(gv) GvSV(gv) +#endif + #define GvREFCNT(gv) (GvGP(gv)->gp_refcnt) -#define GvIO(gv) (GvGP(gv)->gp_io) -#define GvIOn(gv) (GvIO(gv) ? \ - GvIO(gv) : \ - (GvIO(gv) = newIO())) +#define GvIO(gv) ((gv) && SvTYPE((SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : 0) +#define GvIOp(gv) (GvGP(gv)->gp_io) +#define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv))) #define GvFORM(gv) (GvGP(gv)->gp_form) #define GvAV(gv) (GvGP(gv)->gp_av) -#ifdef MICROPORT /* Microport 2.4 hack */ -AV *GvAVn(); -#else +/* This macro is deprecated. Do not use! */ +#define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */ + #define GvAVn(gv) (GvGP(gv)->gp_av ? \ GvGP(gv)->gp_av : \ GvGP(gv_AVadd(gv))->gp_av) -#endif #define GvHV(gv) ((GvGP(gv))->gp_hv) -#ifdef MICROPORT /* Microport 2.4 hack */ -HV *GvHVn(); -#else #define GvHVn(gv) (GvGP(gv)->gp_hv ? \ GvGP(gv)->gp_hv : \ GvGP(gv_HVadd(gv))->gp_hv) -#endif /* Microport 2.4 hack */ #define GvCV(gv) (GvGP(gv)->gp_cv) #define GvCVGEN(gv) (GvGP(gv)->gp_cvgen) - -#define GvLASTEXPR(gv) (GvGP(gv)->gp_lastexpr) +#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv) #define GvLINE(gv) (GvGP(gv)->gp_line) - -#define GvFLAGS(gv) (GvGP(gv)->gp_flags) +#define GvFILE(gv) (GvGP(gv)->gp_file) +#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv))) #define GvEGV(gv) (GvGP(gv)->gp_egv) - -#define GvGP(gv) (GvXPVGV(gv)->xgv_gp) -#define GvNAME(gv) (GvXPVGV(gv)->xgv_name) -#define GvNAMELEN(gv) (GvXPVGV(gv)->xgv_namelen) -#define GvENAME(gv) GvNAME(GvEGV(gv)) - -#define GvSTASH(gv) (GvXPVGV(gv)->xgv_stash) -#define GvESTASH(gv) GvSTASH(GvEGV(gv)) - -struct io { - FILE * ifp; /* ifp and ofp are normally the same */ - FILE * ofp; /* but sockets need separate streams */ -#ifdef HAS_READDIR - DIR * dirp; /* for opendir, readdir, etc */ +#define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv) +#define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv) + +#define GVf_INTRO 0x01 +#define GVf_MULTI 0x02 +#define GVf_ASSUMECV 0x04 +#define GVf_IN_PAD 0x08 +#define GVf_IMPORTED 0xF0 +#define GVf_IMPORTED_SV 0x10 +#define GVf_IMPORTED_AV 0x20 +#define GVf_IMPORTED_HV 0x40 +#define GVf_IMPORTED_CV 0x80 + +#define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO) +#define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO) +#define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO) + +#define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI) +#define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI) +#define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI) + +#define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV) +#define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV) +#define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV) + +#define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED) +#define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED) +#define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED) + +#define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV) +#define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV) +#define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV) + +#define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV) +#define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV) +#define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV) + +#define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV) +#define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV) +#define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV) + +#define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV) +#define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV) +#define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV) + +#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD) +#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD) +#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD) + +#define GvUNIQUE(gv) 0 +#define GvUNIQUE_on(gv) +#define GvUNIQUE_off(gv) + +#ifdef USE_ITHREADS +#define GV_UNIQUE_CHECK +#else +#undef GV_UNIQUE_CHECK #endif - long lines; /* $. */ - long page; /* $% */ - long page_len; /* $= */ - long lines_left; /* $- */ - char * top_name; /* $^ */ - GV * top_gv; /* $^ */ - char * fmt_name; /* $~ */ - GV * fmt_gv; /* $~ */ - SV * object; - short subprocess; /* -| or |- */ - char type; - char flags; -}; - -#define IOf_ARGV 1 /* this fp iterates over ARGV */ -#define IOf_START 2 /* check for null ARGV and substitute '-' */ -#define IOf_FLUSH 4 /* this fp wants a flush after write op */ #define Nullgv Null(GV*) @@ -126,3 +147,16 @@ struct io { #define DM_EGID 0x020 #define DM_DELAY 0x100 +/* + * symbol creation flags, for use in gv_fetchpv() and get_*v() + */ +#define GV_ADD 0x01 /* add, if symbol not already there */ +#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */ +#define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */ +#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */ +#define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */ +/* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid + as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range. +*/ +#define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE) +#define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE)