X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/2df5bdd700b8a6ef036aa5be19d4bda9e3ca20bc..36dc22073c0c9dbad0f19f957f6a520e21a4a4fa:/pad.h diff --git a/pad.h b/pad.h index dec267a..26e183c 100644 --- a/pad.h +++ b/pad.h @@ -1,6 +1,7 @@ /* pad.h * - * Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008 by Larry Wall and others + * Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, + * 2009, 2010, 2011 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. @@ -10,14 +11,9 @@ * variables, op targets and constants. */ - - - -/* a padlist is currently just an AV; but that might change, - * so hide the type. Ditto a pad. */ - -typedef AV PADLIST; -typedef AV PAD; +/* +=head1 Pad Data Structures +*/ /* offsets within a pad */ @@ -31,6 +27,14 @@ typedef U64TYPE PADOFFSET; #endif #define NOT_IN_PAD ((PADOFFSET) -1) + +struct padlist { + SSize_t xpadl_max; /* max index for which array has space */ + PAD ** xpadl_alloc; /* pointer to beginning of array of AVs */ + PADNAMELIST*xpadl_outid; /* Padnamelist of outer pad; used as ID */ +}; + + /* a value that PL_cop_seqmax is guaranteed never to be, * flagging that a lexical is being introduced, or has not yet left scope */ @@ -118,15 +122,14 @@ typedef enum { padtidy_FORMAT /* or a format */ } padtidy_type; -#ifdef PERL_CORE - -/* flags for pad_add_name. SVf_UTF8 will also be valid in the future. */ +/* flags for pad_add_name_pvn. */ -# define padadd_OUR 0x01 /* our declaration. */ -# define padadd_STATE 0x02 /* state declaration. */ -# define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */ - -#endif +#define padadd_OUR 0x01 /* our declaration. */ +#define padadd_STATE 0x02 /* state declaration. */ +#define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */ +#define padadd_STALEOK 0x08 /* allow stale lexical in active + * sub, but only one level up */ +#define padadd_UTF8_NAME SVf_UTF8 /* name is UTF-8 encoded. */ /* ASSERT_CURPAD_LEGAL and ASSERT_CURPAD_ACTIVE respectively determine * whether PL_comppad and PL_curpad are consistent and whether they have @@ -171,7 +174,66 @@ Clear the pointed to pad value on scope exit. (i.e. the runtime action of 'my') save PL_comppad and PL_curpad +=for apidoc Amx|PAD **|PadlistARRAY|PADLIST padlist +The C array of a padlist, containing the pads. Only subscript it with +numbers >= 1, as the 0th entry is not guaranteed to remain usable. + +=for apidoc Amx|SSize_t|PadlistMAX|PADLIST padlist +The index of the last pad in the padlist. + +=for apidoc Amx|PADNAMELIST *|PadlistNAMES|PADLIST padlist +The names associated with pad entries. + +=for apidoc Amx|PADNAME **|PadlistNAMESARRAY|PADLIST padlist +The C array of pad names. + +=for apidoc Amx|SSize_t|PadlistNAMESMAX|PADLIST padlist +The index of the last pad name. + +=for apidoc Amx|U32|PadlistREFCNT|PADLIST padlist +The reference count of the padlist. Currently this is always 1. + +=for apidoc Amx|PADNAME **|PadnamelistARRAY|PADNAMELIST pnl +The C array of pad names. + +=for apidoc Amx|SSize_t|PadnamelistMAX|PADNAMELIST pnl +The index of the last pad name. + +=for apidoc Amx|SV **|PadARRAY|PAD pad +The C array of pad entries. + +=for apidoc Amx|SSize_t|PadMAX|PAD pad +The index of the last pad entry. + +=for apidoc Amx|char *|PadnamePV|PADNAME pn +The name stored in the pad name struct. This returns NULL for a target or +GV slot. + +=for apidoc Amx|STRLEN|PadnameLEN|PADNAME pn +The length of the name. + +=for apidoc Amx|bool|PadnameUTF8|PADNAME pn +Whether PadnamePV is in UTF8. + +=for apidoc Amx|SV *|PadnameSV|PADNAME pn +Returns the pad name as an SV. This is currently just C. It will +begin returning a new mortal SV if pad names ever stop being SVs. + +=for apidoc m|bool|PadnameIsOUR|PADNAME pn +Whether this is an "our" variable. +=for apidoc m|HV *|PadnameOURSTASH +The stash in which this "our" variable was declared. + +=for apidoc m|bool|PadnameOUTER|PADNAME pn +Whether this entry belongs to an outer pad. + +=for apidoc m|bool|PadnameIsSTATE|PADNAME pn +Whether this is a "state" variable. + +=for apidoc m|HV *|PadnameTYPE|PADNAME pn +The stash associated with a typed lexical. This returns the %Foo:: hash +for C. =for apidoc m|SV *|PAD_SETSV |PADOFFSET po|SV* sv @@ -214,6 +276,30 @@ Restore the old pad saved into the local variable opad by PAD_SAVE_LOCAL() =cut */ +#define PadlistARRAY(pl) (pl)->xpadl_alloc +#define PadlistMAX(pl) (pl)->xpadl_max +#define PadlistNAMES(pl) (*PadlistARRAY(pl)) +#define PadlistNAMESARRAY(pl) PadnamelistARRAY(PadlistNAMES(pl)) +#define PadlistNAMESMAX(pl) PadnamelistMAX(PadlistNAMES(pl)) +#define PadlistREFCNT(pl) 1 /* reserved for future use */ + +#define PadnamelistARRAY(pnl) AvARRAY(pnl) +#define PadnamelistMAX(pnl) AvFILLp(pnl) + +#define PadARRAY(pad) AvARRAY(pad) +#define PadMAX(pad) AvFILLp(pad) + +#define PadnamePV(pn) (SvPOKp(pn) ? SvPVX(pn) : NULL) +#define PadnameLEN(pn) SvCUR(pn) +#define PadnameUTF8(pn) !!SvUTF8(pn) +#define PadnameSV(pn) pn +#define PadnameIsOUR(pn) !!SvPAD_OUR(pn) +#define PadnameOURSTASH(pn) SvOURSTASH(pn) +#define PadnameOUTER(pn) !!SvFAKE(pn) +#define PadnameIsSTATE(pn) !!SvPAD_STATE(pn) +#define PadnameTYPE(pn) (SvPAD_TYPED(pn) ? SvSTASH(pn) : NULL) + + #ifdef DEBUGGING # define PAD_SV(po) pad_sv(po) # define PAD_SETSV(po,sv) pad_setsv(po,sv) @@ -225,12 +311,13 @@ Restore the old pad saved into the local variable opad by PAD_SAVE_LOCAL() #define PAD_SVl(po) (PL_curpad[po]) #define PAD_BASE_SV(padlist, po) \ - (AvARRAY(padlist)[1]) \ - ? AvARRAY(MUTABLE_AV((AvARRAY(padlist)[1])))[po] : NULL; + (PadlistARRAY(padlist)[1]) \ + ? AvARRAY(MUTABLE_AV((PadlistARRAY(padlist)[1])))[po] \ + : NULL; #define PAD_SET_CUR_NOSAVE(padlist,nth) \ - PL_comppad = (PAD*) (AvARRAY(padlist)[nth]); \ + PL_comppad = (PAD*) (PadlistARRAY(padlist)[nth]); \ PL_curpad = AvARRAY(PL_comppad); \ DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ "Pad 0x%"UVxf"[0x%"UVxf"] set_cur depth=%d\n", \ @@ -307,10 +394,10 @@ ling pad (lvalue) to C. Note that C is hijacked for this purpose */ +#define PAD_COMPNAME(po) PAD_COMPNAME_SV(po) #define PAD_COMPNAME_SV(po) (*av_fetch(PL_comppad_name, (po), FALSE)) #define PAD_COMPNAME_FLAGS(po) SvFLAGS(PAD_COMPNAME_SV(po)) -#define PAD_COMPNAME_FLAGS_isOUR(po) \ - ((PAD_COMPNAME_FLAGS(po) & (SVpad_NAME|SVpad_OUR)) == (SVpad_NAME|SVpad_OUR)) +#define PAD_COMPNAME_FLAGS_isOUR(po) SvPAD_OUR(PAD_COMPNAME_SV(po)) #define PAD_COMPNAME_PV(po) SvPV_nolen(PAD_COMPNAME_SV(po)) #define PAD_COMPNAME_TYPE(po) pad_compname_type(po) @@ -324,27 +411,12 @@ ling pad (lvalue) to C. Note that C is hijacked for this purpose /* -=for apidoc m|void|PAD_DUP|PADLIST dstpad|PADLIST srcpad|CLONE_PARAMS* param -Clone a padlist. - =for apidoc m|void|PAD_CLONE_VARS|PerlInterpreter *proto_perl|CLONE_PARAMS* param Clone the state variables associated with running and compiling pads. =cut */ - -#define PAD_DUP(dstpad, srcpad, param) \ - if ((srcpad) && !AvREAL(srcpad)) { \ - /* XXX padlists are real, but pretend to be not */ \ - AvREAL_on(srcpad); \ - (dstpad) = av_dup_inc((srcpad), param); \ - AvREAL_off(srcpad); \ - AvREAL_off(dstpad); \ - } \ - else \ - (dstpad) = av_dup_inc((srcpad), param); - /* NB - we set PL_comppad to null unless it points at a value that * has already been dup'ed, ie it points to part of an active padlist. * Otherwise PL_comppad ends up being a leaked scalar in code like @@ -354,7 +426,7 @@ Clone the state variables associated with running and compiling pads. * sub's CV or padlist. */ #define PAD_CLONE_VARS(proto_perl, param) \ - PL_comppad = MUTABLE_AV(ptr_table_fetch(PL_ptr_table, proto_perl->Icomppad)); \ + PL_comppad = av_dup(proto_perl->Icomppad, param); \ PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \ PL_comppad_name = av_dup(proto_perl->Icomppad_name, param); \ PL_comppad_name_fill = proto_perl->Icomppad_name_fill; \ @@ -367,11 +439,35 @@ Clone the state variables associated with running and compiling pads. PL_cop_seqmax = proto_perl->Icop_seqmax; /* +=for apidoc Am|PADOFFSET|pad_add_name_pvs|const char *name|U32 flags|HV *typestash|HV *ourstash + +Exactly like L, but takes a literal string instead +of a string/length pair. + +=cut +*/ + +#define pad_add_name_pvs(name,flags,typestash,ourstash) \ + Perl_pad_add_name_pvn(aTHX_ STR_WITH_LEN(name), flags, typestash, ourstash) + +/* +=for apidoc Am|PADOFFSET|pad_findmy_pvs|const char *name|U32 flags + +Exactly like L, but takes a literal string instead +of a string/length pair. + +=cut +*/ + +#define pad_findmy_pvs(name,flags) \ + Perl_pad_findmy_pvn(aTHX_ STR_WITH_LEN(name), flags) + +/* * Local variables: * c-indentation-style: bsd * c-basic-offset: 4 - * indent-tabs-mode: t + * indent-tabs-mode: nil * End: * - * ex: set ts=8 sts=4 sw=4 noet: + * ex: set ts=8 sts=4 sw=4 et: */