X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/4608196e45589eea5792cff92b551109899ddb06..8025b67f4a91c89c84e9425f55ca42755a7d5530:/pad.h diff --git a/pad.h b/pad.h index 62d4fb1..dec267a 100644 --- a/pad.h +++ b/pad.h @@ -1,6 +1,6 @@ /* pad.h * - * Copyright (C) 2002, 2003, 2005, by Larry Wall and others + * Copyright (C) 2002, 2003, 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. @@ -30,7 +30,79 @@ typedef U64TYPE PADOFFSET; # endif #endif #define NOT_IN_PAD ((PADOFFSET) -1) - + +/* a value that PL_cop_seqmax is guaranteed never to be, + * flagging that a lexical is being introduced, or has not yet left scope + */ +#define PERL_PADSEQ_INTRO U32_MAX + + +/* B.xs needs these for the benefit of B::Deparse */ +/* Low range end is exclusive (valid from the cop seq after this one) */ +/* High range end is inclusive (valid up to this cop seq) */ + +#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) +# define COP_SEQ_RANGE_LOW(sv) \ + (({ const SV *const _sv_cop_seq_range_low = (const SV *) (sv); \ + assert(SvTYPE(_sv_cop_seq_range_low) == SVt_NV \ + || SvTYPE(_sv_cop_seq_range_low) >= SVt_PVNV); \ + assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVAV); \ + assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVHV); \ + assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVCV); \ + assert(SvTYPE(_sv_cop_seq_range_low) != SVt_PVFM); \ + assert(!isGV_with_GP(_sv_cop_seq_range_low)); \ + ((XPVNV*) MUTABLE_PTR(SvANY(_sv_cop_seq_range_low)))->xnv_u.xpad_cop_seq.xlow; \ + })) +# define COP_SEQ_RANGE_HIGH(sv) \ + (({ const SV *const _sv_cop_seq_range_high = (const SV *) (sv); \ + assert(SvTYPE(_sv_cop_seq_range_high) == SVt_NV \ + || SvTYPE(_sv_cop_seq_range_high) >= SVt_PVNV); \ + assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVAV); \ + assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVHV); \ + assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVCV); \ + assert(SvTYPE(_sv_cop_seq_range_high) != SVt_PVFM); \ + assert(!isGV_with_GP(_sv_cop_seq_range_high)); \ + ((XPVNV*) MUTABLE_PTR(SvANY(_sv_cop_seq_range_high)))->xnv_u.xpad_cop_seq.xhigh; \ + })) +# define PARENT_PAD_INDEX(sv) \ + (({ const SV *const _sv_parent_pad_index = (const SV *) (sv); \ + assert(SvTYPE(_sv_parent_pad_index) == SVt_NV \ + || SvTYPE(_sv_parent_pad_index) >= SVt_PVNV); \ + assert(SvTYPE(_sv_parent_pad_index) != SVt_PVAV); \ + assert(SvTYPE(_sv_parent_pad_index) != SVt_PVHV); \ + assert(SvTYPE(_sv_parent_pad_index) != SVt_PVCV); \ + assert(SvTYPE(_sv_parent_pad_index) != SVt_PVFM); \ + assert(!isGV_with_GP(_sv_parent_pad_index)); \ + ((XPVNV*) MUTABLE_PTR(SvANY(_sv_parent_pad_index)))->xnv_u.xpad_cop_seq.xlow; \ + })) +# define PARENT_FAKELEX_FLAGS(sv) \ + (({ const SV *const _sv_parent_fakelex_flags = (const SV *) (sv); \ + assert(SvTYPE(_sv_parent_fakelex_flags) == SVt_NV \ + || SvTYPE(_sv_parent_fakelex_flags) >= SVt_PVNV); \ + assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVAV); \ + assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVHV); \ + assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVCV); \ + assert(SvTYPE(_sv_parent_fakelex_flags) != SVt_PVFM); \ + assert(!isGV_with_GP(_sv_parent_fakelex_flags)); \ + ((XPVNV*) MUTABLE_PTR(SvANY(_sv_parent_fakelex_flags)))->xnv_u.xpad_cop_seq.xhigh; \ + })) +#else +# define COP_SEQ_RANGE_LOW(sv) \ + (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xlow)) +# define COP_SEQ_RANGE_HIGH(sv) \ + (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xhigh)) + + +# define PARENT_PAD_INDEX(sv) \ + (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xlow)) +# define PARENT_FAKELEX_FLAGS(sv) \ + (0 + (((XPVNV*) SvANY(sv))->xnv_u.xpad_cop_seq.xhigh)) +#endif + +/* Flags set in the SvIVX field of FAKE namesvs */ + +#define PAD_FAKELEX_ANON 1 /* the lex is declared in an ANON, or ... */ +#define PAD_FAKELEX_MULTI 2 /* the lex can be instantiated multiple times */ /* flags for the pad_new() function */ @@ -46,18 +118,34 @@ 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. */ + +# define padadd_OUR 0x01 /* our declaration. */ +# define padadd_STATE 0x02 /* state declaration. */ +# define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */ + +#endif + /* ASSERT_CURPAD_LEGAL and ASSERT_CURPAD_ACTIVE respectively determine * whether PL_comppad and PL_curpad are consistent and whether they have * active values */ +#ifndef PERL_MAD +# define pad_peg(label) +#endif + #ifdef DEBUGGING # define ASSERT_CURPAD_LEGAL(label) \ + pad_peg(label); \ if (PL_comppad ? (AvARRAY(PL_comppad) != PL_curpad) : (PL_curpad != 0)) \ Perl_croak(aTHX_ "panic: illegal pad in %s: 0x%"UVxf"[0x%"UVxf"]",\ label, PTR2UV(PL_comppad), PTR2UV(PL_curpad)); # define ASSERT_CURPAD_ACTIVE(label) \ + pad_peg(label); \ if (!PL_comppad || (AvARRAY(PL_comppad) != PL_curpad)) \ Perl_croak(aTHX_ "panic: invalid pad in %s: 0x%"UVxf"[0x%"UVxf"]",\ label, PTR2UV(PL_comppad), PTR2UV(PL_curpad)); @@ -138,20 +226,20 @@ Restore the old pad saved into the local variable opad by PAD_SAVE_LOCAL() #define PAD_BASE_SV(padlist, po) \ (AvARRAY(padlist)[1]) \ - ? AvARRAY((AV*)(AvARRAY(padlist)[1]))[po] : NULL; - + ? AvARRAY(MUTABLE_AV((AvARRAY(padlist)[1])))[po] : NULL; -#define PAD_SET_CUR_NOSAVE(padlist,n) \ - PL_comppad = (PAD*) (AvARRAY(padlist)[n]); \ + +#define PAD_SET_CUR_NOSAVE(padlist,nth) \ + PL_comppad = (PAD*) (AvARRAY(padlist)[nth]); \ PL_curpad = AvARRAY(PL_comppad); \ DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ "Pad 0x%"UVxf"[0x%"UVxf"] set_cur depth=%d\n", \ - PTR2UV(PL_comppad), PTR2UV(PL_curpad), (int)(n))); + PTR2UV(PL_comppad), PTR2UV(PL_curpad), (int)(nth))); -#define PAD_SET_CUR(padlist,n) \ +#define PAD_SET_CUR(padlist,nth) \ SAVECOMPPAD(); \ - PAD_SET_CUR_NOSAVE(padlist,n); + PAD_SET_CUR_NOSAVE(padlist,nth); #define PAD_SAVE_SETNULLPAD() SAVECOMPPAD(); \ @@ -167,7 +255,8 @@ Restore the old pad saved into the local variable opad by PAD_SAVE_LOCAL() PTR2UV(PL_comppad), PTR2UV(PL_curpad))); #define PAD_RESTORE_LOCAL(opad) \ - PL_comppad = opad; \ + assert(!opad || !SvIS_FREED(opad)); \ + PL_comppad = opad; \ PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \ DEBUG_Xv(PerlIO_printf(Perl_debug_log, \ "Pad 0x%"UVxf"[0x%"UVxf"] restore_local\n", \ @@ -186,7 +275,7 @@ context block structure (can be used as an lvalue). */ #define CX_CURPAD_SAVE(block) (block).oldcomppad = PL_comppad -#define CX_CURPAD_SV(block,po) (AvARRAY((AV*)((block).oldcomppad))[po]) +#define CX_CURPAD_SV(block,po) (AvARRAY(MUTABLE_AV(((block).oldcomppad)))[po]) /* @@ -208,35 +297,37 @@ Assumes the slot entry is a valid C lexical. =for apidoc m|STRLEN|PAD_COMPNAME_GEN|PADOFFSET po The generation number of the name at offset C in the current -compiling pad (lvalue). Note that C is hijacked for this purpose. +compiling pad (lvalue). Note that C is hijacked for this purpose. =for apidoc m|STRLEN|PAD_COMPNAME_GEN_set|PADOFFSET po|int gen Sets the generation number of the name at offset C in the current -ling pad (lvalue) to C. Note that C is hijacked for this purpose. +ling pad (lvalue) to C. Note that C is hijacked for this purpose. =cut */ -#define PAD_COMPNAME_FLAGS(po) SvFLAGS(*av_fetch(PL_comppad_name, (po), FALSE)) -#define PAD_COMPNAME_PV(po) SvPV_nolen(*av_fetch(PL_comppad_name, (po), FALSE)) +#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_PV(po) SvPV_nolen(PAD_COMPNAME_SV(po)) #define PAD_COMPNAME_TYPE(po) pad_compname_type(po) #define PAD_COMPNAME_OURSTASH(po) \ - (GvSTASH(*av_fetch(PL_comppad_name, (po), FALSE))) + (SvOURSTASH(PAD_COMPNAME_SV(po))) -#define PAD_COMPNAME_GEN(po) SvCUR(AvARRAY(PL_comppad_name)[po]) +#define PAD_COMPNAME_GEN(po) ((STRLEN)SvUVX(AvARRAY(PL_comppad_name)[po])) -#define PAD_COMPNAME_GEN_set(po, gen) SvCUR_set(AvARRAY(PL_comppad_name)[po], gen) +#define PAD_COMPNAME_GEN_set(po, gen) SvUV_set(AvARRAY(PL_comppad_name)[po], (UV)(gen)) /* =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 +=for apidoc m|void|PAD_CLONE_VARS|PerlInterpreter *proto_perl|CLONE_PARAMS* param Clone the state variables associated with running and compiling pads. =cut @@ -263,7 +354,7 @@ Clone the state variables associated with running and compiling pads. * sub's CV or padlist. */ #define PAD_CLONE_VARS(proto_perl, param) \ - PL_comppad = (AV *) ptr_table_fetch(PL_ptr_table, proto_perl->Icomppad); \ + PL_comppad = MUTABLE_AV(ptr_table_fetch(PL_ptr_table, proto_perl->Icomppad)); \ 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; \ @@ -274,3 +365,13 @@ Clone the state variables associated with running and compiling pads. PL_padix_floor = proto_perl->Ipadix_floor; \ PL_pad_reset_pending = proto_perl->Ipad_reset_pending; \ PL_cop_seqmax = proto_perl->Icop_seqmax; + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */