/* pad.h
*
- * Copyright (c) 2003, Larry Wall
+ * Copyright (C) 2002, 2003, 2005, 2006, 2007 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.
# endif
#endif
#define NOT_IN_PAD ((PADOFFSET) -1)
-
+
+/* 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) \
+ (({ SV *const _svi = (SV *) (sv); \
+ assert(SvTYPE(_svi) == SVt_NV || SvTYPE(_svi) >= SVt_PVNV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ assert(SvTYPE(_svi) != SVt_PVFM); \
+ assert(!isGV_with_GP(_svi)); \
+ ((XPVNV*) SvANY(_svi))->xnv_u.xpad_cop_seq.xlow; \
+ }))
+# define COP_SEQ_RANGE_HIGH(sv) \
+ (({ SV *const _svi = (SV *) (sv); \
+ assert(SvTYPE(_svi) == SVt_NV || SvTYPE(_svi) >= SVt_PVNV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ assert(SvTYPE(_svi) != SVt_PVFM); \
+ assert(!isGV_with_GP(_svi)); \
+ ((XPVNV*) SvANY(_svi))->xnv_u.xpad_cop_seq.xhigh; \
+ }))
+# define PARENT_PAD_INDEX(sv) \
+ (({ SV *const _svi = (SV *) (sv); \
+ assert(SvTYPE(_svi) == SVt_NV || SvTYPE(_svi) >= SVt_PVNV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ assert(SvTYPE(_svi) != SVt_PVFM); \
+ assert(!isGV_with_GP(_svi)); \
+ ((XPVNV*) SvANY(_svi))->xnv_u.xpad_cop_seq.xlow; \
+ }))
+# define PARENT_FAKELEX_FLAGS(sv) \
+ (({ SV *const _svi = (SV *) (sv); \
+ assert(SvTYPE(_svi) == SVt_NV || SvTYPE(_svi) >= SVt_PVNV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ assert(SvTYPE(_svi) != SVt_PVFM); \
+ assert(!isGV_with_GP(_svi)); \
+ ((XPVNV*) SvANY(_svi))->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 */
* 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));
XXX DAPM it would make more sense to make the arg a PADOFFSET
=for apidoc m|void|SAVECLEARSV |SV **svp
-Clear the pointed to pad value on scope exit. (ie the runtime action of 'my')
+Clear the pointed to pad value on scope exit. (i.e. the runtime action of 'my')
=for apidoc m|void|SAVECOMPPAD
save PL_comppad and PL_curpad
=for apidoc m|void|PAD_SET_CUR |PADLIST padlist|I32 n
Set the current pad to be pad C<n> in the padlist, saving
-the previous current pad.
+the previous current pad. NB currently this macro expands to a string too
+long for some compilers, so it's best to replace it with
+
+ SAVECOMPPAD();
+ PAD_SET_CUR_NOSAVE(padlist,n);
+
+
+=for apidoc m|void|PAD_SET_CUR_NOSAVE |PADLIST padlist|I32 n
+like PAD_SET_CUR, but without the save
=for apidoc m|void|PAD_SAVE_SETNULLPAD
Save the current pad then set it to null.
#define PAD_BASE_SV(padlist, po) \
(AvARRAY(padlist)[1]) \
- ? AvARRAY((AV*)(AvARRAY(padlist)[1]))[po] : Nullsv;
+ ? AvARRAY((AV*)(AvARRAY(padlist)[1]))[po] : NULL;
-#define PAD_SET_CUR(padlist,n) \
- SAVECOMPPAD(); \
- 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,nth) \
+ SAVECOMPPAD(); \
+ PAD_SET_CUR_NOSAVE(padlist,nth);
#define PAD_SAVE_SETNULLPAD() SAVECOMPPAD(); \
- PL_comppad = Null(PAD*); PL_curpad = Null(SV**); \
+ PL_comppad = NULL; PL_curpad = NULL; \
DEBUG_Xv(PerlIO_printf(Perl_debug_log, "Pad set_null\n"));
#define PAD_SAVE_LOCAL(opad,npad) \
opad = PL_comppad; \
PL_comppad = (npad); \
- PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : Null(SV**); \
+ PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \
DEBUG_Xv(PerlIO_printf(Perl_debug_log, \
"Pad 0x%"UVxf"[0x%"UVxf"] save_local\n", \
PTR2UV(PL_comppad), PTR2UV(PL_curpad)));
#define PAD_RESTORE_LOCAL(opad) \
PL_comppad = opad; \
- PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : Null(SV**); \
+ PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL; \
DEBUG_Xv(PerlIO_printf(Perl_debug_log, \
"Pad 0x%"UVxf"[0x%"UVxf"] restore_local\n", \
PTR2UV(PL_comppad), PTR2UV(PL_curpad)));
=for apidoc m|STRLEN|PAD_COMPNAME_GEN|PADOFFSET po
The generation number of the name at offset C<po> in the current
-compiling pad (lvalue). Note that C<SvCUR> is hijacked for this purpose.
+compiling pad (lvalue). Note that C<SvUVX> 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<po> in the current
+ling pad (lvalue) to C<gen>. Note that C<SvUV_set> 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))
-/* XXX DAPM yuk - using av_fetch twice. Is there a better way? */
-#define PAD_COMPNAME_TYPE(po) \
- ((SvFLAGS(*av_fetch(PL_comppad_name, (po), FALSE)) & SVpad_TYPED) \
- ? (SvSTASH(*av_fetch(PL_comppad_name, (po), FALSE))) : Nullhv)
+#define PAD_COMPNAME_TYPE(po) pad_compname_type(po)
#define PAD_COMPNAME_OURSTASH(po) \
- (GvSTASH(*av_fetch(PL_comppad_name, (po), FALSE)))
-
-#define PAD_COMPNAME_GEN(po) SvCUR(AvARRAY(PL_comppad_name)[po])
+ (SvOURSTASH(PAD_COMPNAME_SV(po)))
+#define PAD_COMPNAME_GEN(po) ((STRLEN)SvUVX(AvARRAY(PL_comppad_name)[po]))
+#define PAD_COMPNAME_GEN_set(po, gen) SvUV_set(AvARRAY(PL_comppad_name)[po], (UV)(gen))
/*
* sub's CV or padlist. */
#define PAD_CLONE_VARS(proto_perl, param) \
- PL_comppad = ptr_table_fetch(PL_ptr_table, proto_perl->Icomppad); \
- PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : Null(SV**); \
+ PL_comppad = (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; \
PL_comppad_name_floor = proto_perl->Icomppad_name_floor; \
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