/* cv.h
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 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.
*
*/
-/* This structure must the beginning of XPVFM in sv.h */
+/* This structure must match the beginning of XPVFM in sv.h */
struct xpvcv {
- union {
- NV xnv_nv; /* numeric value, if any */
- HV * xgv_stash;
- struct {
- U32 xlow;
- U32 xhigh;
- } xpad_cop_seq; /* used by pad.c for cop_sequence */
- struct {
- U32 xbm_previous; /* how many characters in string before rare? */
- U8 xbm_flags;
- U8 xbm_rare; /* rarest character in string */
- } xbm_s; /* fields from PVBM */
- } xnv_u;
- STRLEN xpv_cur; /* length of xp_pv as a C string */
- STRLEN xpv_len; /* allocated size */
- union {
- IV xivu_iv;
- UV xivu_uv;
- void * xivu_p1;
- I32 xivu_i32; /* depth, >= 2 indicates recursive call */
- HEK * xivu_namehek;
- } xiv_u;
- union {
- MAGIC* xmg_magic; /* linked list of magicalness */
- HV* xmg_ourstash; /* Stash for our (when SvPAD_OUR is true) */
- } xmg_u;
- HV* xmg_stash; /* class package */
-
- HV * xcv_stash;
- union {
- OP * xcv_start;
- ANY xcv_xsubany;
- } xcv_start_u;
- union {
- OP * xcv_root;
- void (*xcv_xsub) (pTHX_ CV*);
- } xcv_root_u;
- GV * xcv_gv;
- char * xcv_file;
- PADLIST * xcv_padlist;
- CV * xcv_outside;
- U32 xcv_outside_seq; /* the COP sequence (at the point of our
- * compilation) in the lexically enclosing
- * sub */
- cv_flags_t xcv_flags;
+ _XPV_HEAD;
+ _XPVCV_COMMON;
+ I32 xcv_depth; /* >= 2 indicates recursive call */
};
-typedef struct {
- STRLEN xpv_cur; /* length of xp_pv as a C string */
- STRLEN xpv_len; /* allocated size */
- union {
- IV xivu_iv;
- UV xivu_uv;
- void * xivu_p1;
- I32 xivu_i32; /* depth, >= 2 indicates recursive call */
- HEK * xivu_namehek;
- } xiv_u;
- union {
- MAGIC* xmg_magic; /* linked list of magicalness */
- HV* xmg_ourstash; /* Stash for our (when SvPAD_OUR is true) */
- } xmg_u;
- HV* xmg_stash; /* class package */
-
- HV * xcv_stash;
- union {
- OP * xcv_start;
- ANY xcv_xsubany;
- } xcv_start_u;
- union {
- OP * xcv_root;
- void (*xcv_xsub) (pTHX_ CV*);
- } xcv_root_u;
- GV * xcv_gv;
- char * xcv_file;
- PADLIST * xcv_padlist;
- CV * xcv_outside;
- U32 xcv_outside_seq; /* the COP sequence (at the point of our
- * compilation) in the lexically enclosing
- * sub */
- cv_flags_t xcv_flags;
-} xpvcv_allocated;
-
/*
=head1 Handy Values
=for apidoc AmU||Nullcv
Null CV pointer.
+(deprecated - use C<(CV *)NULL> instead)
+
=head1 CV Manipulation Functions
+This section documents functions to manipulate CVs which are code-values,
+or subroutines. For more information, see L<perlguts>.
+
=for apidoc Am|HV*|CvSTASH|CV* cv
-Returns the stash of the CV.
+Returns the stash of the CV. A stash is the symbol table hash, containing
+the package-scoped variables in the package where the subroutine was defined.
+For more information, see L<perlguts>.
+
+This also has a special use with XS AUTOLOAD subs.
+See L<perlguts/Autoloading with XSUBs>.
=cut
*/
-#define Nullcv Null(CV*)
+#ifndef PERL_CORE
+# define Nullcv Null(CV*)
+#endif
-#define CvSTASH(sv) ((XPVCV*)SvANY(sv))->xcv_stash
-#define CvSTART(sv) ((XPVCV*)SvANY(sv))->xcv_start_u.xcv_start
-#define CvROOT(sv) ((XPVCV*)SvANY(sv))->xcv_root_u.xcv_root
-#define CvXSUB(sv) ((XPVCV*)SvANY(sv))->xcv_root_u.xcv_xsub
-#define CvXSUBANY(sv) ((XPVCV*)SvANY(sv))->xcv_start_u.xcv_xsubany
-#define CvGV(sv) ((XPVCV*)SvANY(sv))->xcv_gv
-#define CvFILE(sv) ((XPVCV*)SvANY(sv))->xcv_file
+#define CvSTASH(sv) (0+((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_stash)
+#define CvSTASH_set(cv,st) Perl_cvstash_set(aTHX_ cv, st)
+#define CvSTART(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_start_u.xcv_start
+#define CvROOT(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_root_u.xcv_root
+#define CvXSUB(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_root_u.xcv_xsub
+#define CvXSUBANY(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_start_u.xcv_xsubany
+#define CvGV(sv) (0+((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_gv)
+#define CvGV_set(cv,gv) Perl_cvgv_set(aTHX_ cv, gv)
+#define CvFILE(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_file
#ifdef USE_ITHREADS
-# define CvFILE_set_from_cop(sv, cop) (CvFILE(sv) = savepv(CopFILE(cop)))
+# define CvFILE_set_from_cop(sv, cop) \
+ (CvFILE(sv) = savepv(CopFILE(cop)), CvDYNFILE_on(sv))
#else
-# define CvFILE_set_from_cop(sv, cop) (CvFILE(sv) = CopFILE(cop))
+# define CvFILE_set_from_cop(sv, cop) \
+ (CvFILE(sv) = CopFILE(cop), CvDYNFILE_off(sv))
#endif
#define CvFILEGV(sv) (gv_fetchfile(CvFILE(sv)))
#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
-# define CvDEPTH(sv) (*({const CV *_cv = (CV *)sv; \
- assert(SvTYPE(_cv) == SVt_PVCV || \
- SvTYPE(_cv) == SVt_PVFM); \
- &((XPVCV*)SvANY(_cv))->xiv_u.xivu_i32; \
+# define CvDEPTH(sv) (*({const CV *const _cvdepth = (const CV *)sv; \
+ assert(SvTYPE(_cvdepth) == SVt_PVCV); \
+ &((XPVCV*)SvANY(_cvdepth))->xcv_depth; \
}))
#else
-# define CvDEPTH(sv) ((XPVCV*)SvANY(sv))->xiv_u.xivu_i32
+# define CvDEPTH(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_depth
#endif
-#define CvPADLIST(sv) ((XPVCV*)SvANY(sv))->xcv_padlist
-#define CvOUTSIDE(sv) ((XPVCV*)SvANY(sv))->xcv_outside
-#define CvFLAGS(sv) ((XPVCV*)SvANY(sv))->xcv_flags
-#define CvOUTSIDE_SEQ(sv) ((XPVCV*)SvANY(sv))->xcv_outside_seq
+#define CvPADLIST(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_padlist
+#define CvOUTSIDE(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_outside
+#define CvFLAGS(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_flags
+#define CvOUTSIDE_SEQ(sv) ((XPVCV*)MUTABLE_PTR(SvANY(sv)))->xcv_outside_seq
+
+/* These two are sometimes called on non-CVs */
+#define CvPROTO(sv) \
+ ( \
+ SvPOK(sv) \
+ ? SvTYPE(sv) == SVt_PVCV && CvAUTOLOAD(sv) \
+ ? SvEND(sv)+1 : SvPVX_const(sv) \
+ : NULL \
+ )
+#define CvPROTOLEN(sv) \
+ ( \
+ SvPOK(sv) \
+ ? SvTYPE(sv) == SVt_PVCV && CvAUTOLOAD(sv) \
+ ? SvLEN(sv)-SvCUR(sv)-2 \
+ : SvCUR(sv) \
+ : 0 \
+ )
#define CVf_METHOD 0x0001 /* CV is explicitly marked as a method */
-#define CVf_LOCKED 0x0002 /* CV locks itself or first arg on entry */
-#define CVf_LVALUE 0x0004 /* CV return value can be used as lvalue */
-#define CVf_ASSERTION 0x0008 /* CV called only when asserting */
+#define CVf_LVALUE 0x0002 /* CV return value can be used as lvalue */
+#define CVf_CONST 0x0004 /* inlinable sub */
+#define CVf_ISXSUB 0x0008 /* CV is an XSUB, not pure perl. */
#define CVf_WEAKOUTSIDE 0x0010 /* CvOUTSIDE isn't ref counted */
#define CVf_CLONE 0x0020 /* anon CV uses external lexicals */
#define CVf_CLONED 0x0040 /* a clone of one of those */
-#define CVf_ANON 0x0080 /* CvGV() can't be trusted */
+#define CVf_ANON 0x0080 /* CV is not pointed to by a GV */
#define CVf_UNIQUE 0x0100 /* sub is only called once (eg PL_main_cv,
* require, eval). */
#define CVf_NODEBUG 0x0200 /* no DB::sub indirection for this CV
(esp. useful for special XSUBs) */
-#define CVf_CONST 0x0400 /* inlinable sub */
-#define CVf_ISXSUB 0x0800 /* CV is an XSUB, not pure perl. */
+#define CVf_CVGV_RC 0x0400 /* CvGV is reference counted */
+#ifdef PERL_CORE
+# define CVf_SLABBED 0x0800 /* Holds refcount on op slab */
+#endif
+#define CVf_DYNFILE 0x1000 /* The filename isn't static */
+#define CVf_AUTOLOAD 0x2000 /* SvPVX contains AUTOLOADed sub name */
+#define CVf_HASEVAL 0x4000 /* contains string eval */
/* This symbol for optimised communication between toke.c and op.c: */
-#define CVf_BUILTIN_ATTRS (CVf_METHOD|CVf_LOCKED|CVf_LVALUE|CVf_ASSERTION)
+#define CVf_BUILTIN_ATTRS (CVf_METHOD|CVf_LVALUE)
#define CvCLONE(cv) (CvFLAGS(cv) & CVf_CLONE)
#define CvCLONE_on(cv) (CvFLAGS(cv) |= CVf_CLONE)
#define CvANON_on(cv) (CvFLAGS(cv) |= CVf_ANON)
#define CvANON_off(cv) (CvFLAGS(cv) &= ~CVf_ANON)
+/* CvEVAL or CvSPECIAL */
#define CvUNIQUE(cv) (CvFLAGS(cv) & CVf_UNIQUE)
#define CvUNIQUE_on(cv) (CvFLAGS(cv) |= CVf_UNIQUE)
#define CvUNIQUE_off(cv) (CvFLAGS(cv) &= ~CVf_UNIQUE)
#define CvMETHOD_on(cv) (CvFLAGS(cv) |= CVf_METHOD)
#define CvMETHOD_off(cv) (CvFLAGS(cv) &= ~CVf_METHOD)
-#define CvLOCKED(cv) (CvFLAGS(cv) & CVf_LOCKED)
-#define CvLOCKED_on(cv) (CvFLAGS(cv) |= CVf_LOCKED)
-#define CvLOCKED_off(cv) (CvFLAGS(cv) &= ~CVf_LOCKED)
-
#define CvLVALUE(cv) (CvFLAGS(cv) & CVf_LVALUE)
#define CvLVALUE_on(cv) (CvFLAGS(cv) |= CVf_LVALUE)
#define CvLVALUE_off(cv) (CvFLAGS(cv) &= ~CVf_LVALUE)
-#define CvASSERTION(cv) (CvFLAGS(cv) & CVf_ASSERTION)
-#define CvASSERTION_on(cv) (CvFLAGS(cv) |= CVf_ASSERTION)
-#define CvASSERTION_off(cv) (CvFLAGS(cv) &= ~CVf_ASSERTION)
-
+/* eval or PL_main_cv */
#define CvEVAL(cv) (CvUNIQUE(cv) && !SvFAKE(cv))
#define CvEVAL_on(cv) (CvUNIQUE_on(cv),SvFAKE_off(cv))
#define CvEVAL_off(cv) CvUNIQUE_off(cv)
#define CvISXSUB_on(cv) (CvFLAGS(cv) |= CVf_ISXSUB)
#define CvISXSUB_off(cv) (CvFLAGS(cv) &= ~CVf_ISXSUB)
+#define CvCVGV_RC(cv) (CvFLAGS(cv) & CVf_CVGV_RC)
+#define CvCVGV_RC_on(cv) (CvFLAGS(cv) |= CVf_CVGV_RC)
+#define CvCVGV_RC_off(cv) (CvFLAGS(cv) &= ~CVf_CVGV_RC)
+
+#ifdef PERL_CORE
+# define CvSLABBED(cv) (CvFLAGS(cv) & CVf_SLABBED)
+# define CvSLABBED_on(cv) (CvFLAGS(cv) |= CVf_SLABBED)
+# define CvSLABBED_off(cv) (CvFLAGS(cv) &= ~CVf_SLABBED)
+#endif
+
+#define CvDYNFILE(cv) (CvFLAGS(cv) & CVf_DYNFILE)
+#define CvDYNFILE_on(cv) (CvFLAGS(cv) |= CVf_DYNFILE)
+#define CvDYNFILE_off(cv) (CvFLAGS(cv) &= ~CVf_DYNFILE)
+
+#define CvAUTOLOAD(cv) (CvFLAGS(cv) & CVf_AUTOLOAD)
+#define CvAUTOLOAD_on(cv) (CvFLAGS(cv) |= CVf_AUTOLOAD)
+#define CvAUTOLOAD_off(cv) (CvFLAGS(cv) &= ~CVf_AUTOLOAD)
+
+#define CvHASEVAL(cv) (CvFLAGS(cv) & CVf_HASEVAL)
+#define CvHASEVAL_on(cv) (CvFLAGS(cv) |= CVf_HASEVAL)
+#define CvHASEVAL_off(cv) (CvFLAGS(cv) &= ~CVf_HASEVAL)
+
/* Flags for newXS_flags */
#define XS_DYNAMIC_FILENAME 0x01 /* The filename isn't static */
=cut
*/
+typedef OP *(*Perl_call_checker)(pTHX_ OP *, GV *, SV *);
+
/*
* 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:
*/
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