/* sv.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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.
SVt_PVHV, /* 12 */
SVt_PVCV, /* 13 */
SVt_PVFM, /* 14 */
- SVt_PVIO /* 15 */
+ SVt_PVIO, /* 15 */
+ SVt_LAST /* keep last in enum. used to size arrays */
} svtype;
+/* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL
+ and SVt_IV, so never reaches the clause at the end that uses
+ sv_type_details->body_size to determine whether to call safefree(). Hence
+ body_size can be set no-zero to record the size of PTEs and HEs, without
+ fear of bogus frees. */
+#ifdef PERL_IN_SV_C
+#define PTE_SVSLOT SVt_IV
+#endif
+#if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST)
+#define HE_SVSLOT SVt_NULL
+#endif
+
+#define PERL_ARENA_ROOTS_SIZE (SVt_LAST)
+
+/* typedefs to eliminate some typing */
+typedef struct he HE;
+typedef struct hek HEK;
+
/* Using C's structural equivalence to help emulate C++ inheritance here... */
+/* start with 2 sv-head building blocks */
+#define _SV_HEAD(ptrtype) \
+ ptrtype sv_any; /* pointer to body */ \
+ U32 sv_refcnt; /* how many references to us */ \
+ U32 sv_flags /* what we are */
+
+#define _SV_HEAD_UNION \
+ union { \
+ IV svu_iv; \
+ UV svu_uv; \
+ SV* svu_rv; /* pointer to another SV */ \
+ char* svu_pv; /* pointer to malloced string */ \
+ SV** svu_array; \
+ HE** svu_hash; \
+ } sv_u
+
+
struct STRUCT_SV { /* struct sv { */
- void* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv; /* pointer to another SV */
- char* svu_pv; /* pointer to malloced string */
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(void*);
+ _SV_HEAD_UNION;
#ifdef DEBUG_LEAKING_SCALARS
unsigned sv_debug_optype:9; /* the type of OP that allocated us */
unsigned sv_debug_inpad:1; /* was allocated in a pad for an OP */
};
struct gv {
- XPVGV* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv;
- char* svu_pv;
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(XPVGV*); /* pointer to xpvgv body */
+ _SV_HEAD_UNION;
};
struct cv {
- XPVCV* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv;
- char* svu_pv;
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(XPVCV*); /* pointer to xpvcv body */
+ _SV_HEAD_UNION;
};
struct av {
- XPVAV* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv;
- char* svu_pv; /* pointer to first array element */
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(XPVAV*); /* pointer to xpvav body */
+ _SV_HEAD_UNION;
};
struct hv {
- XPVHV* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv;
- char* svu_pv;
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(XPVHV*); /* pointer to xpvhv body */
+ _SV_HEAD_UNION;
};
struct io {
- XPVIO* sv_any; /* pointer to something */
- U32 sv_refcnt; /* how many references to us */
- U32 sv_flags; /* what we are */
- union {
- IV svu_iv;
- UV svu_uv;
- SV* svu_rv;
- char* svu_pv;
- SV** svu_array;
- } sv_u;
+ _SV_HEAD(XPVIO*); /* pointer to xpvio body */
+ _SV_HEAD_UNION;
};
+#undef _SV_HEAD
+#undef _SV_HEAD_UNION /* ensure no pollution */
+
/*
=head1 SV Manipulation Functions
})
#else
# define SvREFCNT_inc(sv) \
- ((PL_Sv=(SV*)(sv)), (PL_Sv && ++(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
+ ((PL_Sv=(SV*)(sv)) ? ((++(SvREFCNT(PL_Sv))),(PL_Sv)) : NULL)
#endif
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
#define SVTYPEMASK 0xff
#define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
-#define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
-
-#define SVs_PADSTALE 0x00000100 /* lexical has gone out of scope */
-#define SVs_PADTMP 0x00000200 /* in use as tmp */
-#define SVs_PADMY 0x00000400 /* in use a "my" variable */
-#define SVs_TEMP 0x00000800 /* string is stealable? */
-#define SVs_OBJECT 0x00001000 /* is "blessed" */
-#define SVs_GMG 0x00002000 /* has magical get method */
-#define SVs_SMG 0x00004000 /* has magical set method */
-#define SVs_RMG 0x00008000 /* has random magical methods */
-
-#define SVf_IOK 0x00010000 /* has valid public integer value */
-#define SVf_NOK 0x00020000 /* has valid public numeric value */
-#define SVf_POK 0x00040000 /* has valid public pointer value */
-#define SVf_ROK 0x00080000 /* has a valid reference pointer */
-
-#define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
-#define SVf_OOK 0x00200000 /* has valid offset value */
-#define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
+/* Sadly there are some parts of the core that have pointers to already-freed
+ SV heads, and rely on being able to tell that they are now free. So mark
+ them all by using a consistent macro. */
+#define SvIS_FREED(sv) ((sv)->sv_flags == SVTYPEMASK)
+
+#define SvUPGRADE(sv, mt) (SvTYPE(sv) >= (mt) || (sv_upgrade(sv, mt), 1))
+
+#define SVf_IOK 0x00000100 /* has valid public integer value */
+#define SVf_NOK 0x00000200 /* has valid public numeric value */
+#define SVf_POK 0x00000400 /* has valid public pointer value */
+#define SVf_ROK 0x00000800 /* has a valid reference pointer */
+
+#define SVp_IOK 0x00001000 /* has valid non-public integer value */
+#define SVp_NOK 0x00002000 /* has valid non-public numeric value */
+#define SVp_POK 0x00004000 /* has valid non-public pointer value */
+#define SVp_SCREAM 0x00008000 /* has been studied? */
+#define SVphv_CLONEABLE 0x00008000 /* PVHV (stashes) clone its objects */
+
+#define SVs_PADSTALE 0x00010000 /* lexical has gone out of scope */
+#define SVs_PADTMP 0x00020000 /* in use as tmp */
+#define SVpad_TYPED 0x00020000 /* pad name is a Typed Lexical */
+#define SVs_PADMY 0x00040000 /* in use a "my" variable */
+#define SVpad_OUR 0x00040000 /* pad name is "our" instead of "my" */
+#define SVs_TEMP 0x00080000 /* string is stealable? */
+#define SVs_OBJECT 0x00100000 /* is "blessed" */
+#define SVs_GMG 0x00200000 /* has magical get method */
+#define SVs_SMG 0x00400000 /* has magical set method */
+#define SVs_RMG 0x00800000 /* has random magical methods */
+
+#define SVf_FAKE 0x01000000 /* 0: glob or lexical is just a copy
+ 1: SV head arena wasn't malloc()ed
+ 2: in conjunction with SVf_READONLY
+ marks a shared hash key scalar
+ (SvLEN == 0) or a copy on write
+ string (SvLEN != 0) [SvIsCOW(sv)]
+ 3: For PVCV, whether CvUNIQUE(cv)
+ refers to an eval or once only
+ [CvEVAL(cv), CvSPECIAL(cv)]
+ 4: Whether the regexp pointer is in
+ fact an offset [SvREPADTMP(sv)]
+ 5: On a pad name SV, that slot in the
+ frame AV is a REFCNT'ed reference
+ to a lexical from "outside".
+ */
+#define SVf_OOK 0x02000000 /* has valid offset value
+ For a PVHV this means that a
+ hv_aux struct is present after the
+ main array */
+#define SVf_BREAK 0x04000000 /* refcnt is artificially low - used
* by SV's in final arena cleanup */
-#define SVf_READONLY 0x00800000 /* may not be modified */
+#define SVf_READONLY 0x08000000 /* may not be modified */
-#define SVp_IOK 0x01000000 /* has valid non-public integer value */
-#define SVp_NOK 0x02000000 /* has valid non-public numeric value */
-#define SVp_POK 0x04000000 /* has valid non-public pointer value */
-#define SVp_SCREAM 0x08000000 /* has been studied? */
-#define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
-/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
- SVp_IOK|SVp_NOK|SVp_POK)
+ SVp_IOK|SVp_NOK|SVp_POK|SVp_SCREAM)
-#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
+#define PRIVSHIFT 4 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
-#define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
+#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
+#define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
+/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
/* Some private flags. */
-/* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
-#define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
-#define SVpad_TYPED 0x40000000 /* Typed Lexical */
-
-#define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
-
-#define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
-
-#define SVpbm_VALID 0x80000000
+/* PVHV */
+#define SVphv_REHASH 0x10000000 /* PVHV is recalculating hash values */
+/* PVHV */
+#define SVphv_SHAREKEYS 0x20000000 /* PVHV
+ keys live on shared string table */
+/* PVNV, PVMG, PVGV, presumably only inside pads */
+#define SVpad_NAME 0x40000000 /* This SV is a name in the PAD, so
+ SVpad_TYPED and SVpad_OUR apply */
+/* PVAV */
+#define SVpav_REAL 0x40000000 /* free old entries */
+/* PVHV */
+#define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
+/* PVBM */
#define SVpbm_TAIL 0x40000000
-
+/* ??? */
#define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
-#define SVphv_CLONEABLE 0x08000000 /* for stashes: clone its objects */
-#define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */
-#define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
-#define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
+/* IV, PVIV, PVNV, PVMG, PVGV and (I assume) PVLV */
+/* Presumably IVs aren't stored in pads */
+#define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
+/* PVAV */
+#define SVpav_REIFY 0x80000000 /* can become real */
+/* PVHV */
#define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
-
+/* PVFM */
+#define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
+/* PVBM */
+#define SVpbm_VALID 0x80000000
+/* RV upwards. However, SVf_ROK and SVp_IOK are exclusive */
#define SVprv_WEAKREF 0x80000000 /* Weak reference */
-#define SVpav_REAL 0x40000000 /* free old entries */
-#define SVpav_REIFY 0x80000000 /* can become real */
struct xpv {
- IV xpv_dummy; /* This isn't allocated. */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
};
#endif
struct xpviv {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
+ union {
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } xiv_u;
};
+#if 0
+typedef struct xpviv xpviv_allocated;
+#else
+typedef struct {
+ STRLEN xpv_cur; /* length of svu_pv as a C string */
+ STRLEN xpv_len; /* allocated size */
+ union {
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } xiv_u;
+} xpviv_allocated;
+#endif
+
+#define xiv_iv xiv_u.xivu_iv
+
struct xpvuv {
- UV xuv_uv; /* unsigned value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
+ union {
+ IV xuvu_iv;
+ UV xuvu_uv; /* unsigned value or pv offset */
+ void * xuvu_p1;
+ } xuv_u;
};
+#define xuv_uv xuv_u.xuvu_uv
+
struct xpvnv {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } xiv_u;
};
-#define xnv_nv xnv_u.xnvu_nv
-
/* These structure must match the beginning of struct xpvhv in hv.h. */
struct xpvmg {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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 */
};
struct xpvlv {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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 */
/* a full glob fits into this */
};
struct xpvgv {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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 */
GP* xgv_gp;
};
struct xpvbm {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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 */
I32 xbm_useful; /* is this constant pattern being useful? */
typedef U16 cv_flags_t;
struct xpvfm {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* PVFMs use the pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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;
- OP * xcv_start;
- OP * xcv_root;
- void (*xcv_xsub)(pTHX_ CV*);
- ANY xcv_xsubany;
+ 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;
- long xcv_depth; /* >= 2 indicates recursive call */
AV * xcv_padlist;
CV * xcv_outside;
- cv_flags_t xcv_flags;
U32 xcv_outside_seq; /* the COP sequence (at the point of our
* compilation) in the lexically enclosing
* sub */
+ cv_flags_t xcv_flags;
IV xfm_lines;
};
+typedef struct {
+ STRLEN xpv_cur; /* length of svu_pv as a C string */
+ STRLEN xpv_len; /* allocated size */
+ union {
+ IV xivu_iv; /* PVFMs use the pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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;
+ AV * 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;
+ IV xfm_lines;
+} xpvfm_allocated;
+
struct xpvio {
- IV xiv_iv; /* integer value or pv offset */
+ NV xnv_nv; /* numeric value, if any */
STRLEN xpv_cur; /* length of svu_pv as a C string */
STRLEN xpv_len; /* allocated size */
union {
- struct {
- void *xnv_p1;
- union {
- void *xnv_p2;
- IV xnv_i2;
- } xnv_u2;
- } xnv_s;
- NV xnvu_nv; /* numeric value, if any */
- } xnv_u;
- MAGIC* xmg_magic; /* linked list of magicalness */
+ IV xivu_iv; /* integer value or pv offset */
+ UV xivu_uv;
+ void * xivu_p1;
+ I32 xivu_i32;
+ } 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 */
PerlIO * xio_ifp; /* ifp and ofp are normally the same */
SVf_IVisUV), \
SvFLAGS(sv) |= (SVf_POK|SVp_POK))
-#define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V'))
+#define SvVOK(sv) (SvMAGICAL(sv) \
+ ? mg_find(sv,PERL_MAGIC_vstring) : NULL)
#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
#define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
#define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv)))
#define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
#define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
-#define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
+#define SvSCREAM(sv) ((SvFLAGS(sv) & (SVp_SCREAM|SVp_POK)) == (SVp_SCREAM|SVp_POK))
#define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
#define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
#define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
#endif
+#define SvPAD_TYPED(sv) \
+ ((SvFLAGS(sv) & (SVpad_NAME|SVpad_TYPED)) == (SVpad_NAME|SVpad_TYPED))
+#define SvPAD_TYPED_on(sv) (SvFLAGS(sv) |= SVpad_NAME|SVpad_TYPED)
+
+#define SvPAD_OUR(sv) \
+ ((SvFLAGS(sv) & (SVpad_NAME|SVpad_OUR)) == (SVpad_NAME|SVpad_OUR))
+#define SvPAD_OUR_on(sv) (SvFLAGS(sv) |= SVpad_NAME|SVpad_OUR)
+
+#define OURSTASH(sv) \
+ (SvPAD_OUR(sv) ? ((XPVMG*) SvANY(sv))->xmg_u.xmg_ourstash : NULL)
+#define OURSTASH_set(sv, st) \
+ STMT_START { \
+ assert(SvTYPE(sv) == SVt_PVMG); \
+ ((XPVMG*) SvANY(sv))->xmg_u.xmg_ourstash = st; \
+ } STMT_END
+
#ifdef PERL_DEBUG_COW
#define SvRV(sv) (0 + (sv)->sv_u.svu_rv)
#else
#define SvRVx(sv) SvRV(sv)
#ifdef PERL_DEBUG_COW
-#define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv)
-#define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv)
-#define SvNVX(sv) (0 + ((XPVNV*) SvANY(sv))->xnv_nv)
-#define SvPVX(sv) (0 + (sv)->sv_u.svu_pv)
-#define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur)
-#define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len)
-#define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
-
-#ifdef DEBUGGING
-# ifdef PERL_IN_SV_C
-/* Can't make this RVALUE because of Perl_sv_unmagic. */
-# define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
+/* Need -0.0 for SvNVX to preserve IEEE FP "negative zero" because
+ +0.0 + -0.0 => +0.0 but -0.0 + -0.0 => -0.0 */
+# define SvIVX(sv) (0 + ((XPVIV*) SvANY(sv))->xiv_iv)
+# define SvUVX(sv) (0 + ((XPVUV*) SvANY(sv))->xuv_uv)
+# define SvNVX(sv) (-0.0 + ((XPVNV*) SvANY(sv))->xnv_nv)
+/* Don't test the core XS code yet. */
+# if defined (PERL_CORE) && PERL_DEBUG_COW > 1
+# define SvPVX(sv) (0 + (assert(!SvREADONLY(sv)), (sv)->sv_u.svu_pv))
# else
-# define SvMAGIC(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
+# define SvPVX(sv) SvPVX_mutable(sv)
# endif
-#define SvSTASH(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
-#else
-# ifdef PERL_IN_SV_C
-# define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
+# define SvCUR(sv) (0 + ((XPV*) SvANY(sv))->xpv_cur)
+# define SvLEN(sv) (0 + ((XPV*) SvANY(sv))->xpv_len)
+# define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
+
+# ifdef DEBUGGING
+# define SvMAGIC(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_u.xmg_magic))
+# define SvSTASH(sv) (0 + *(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
# else
-# define SvMAGIC(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_magic)
+# define SvMAGIC(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_u.xmg_magic)
+# define SvSTASH(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_stash)
# endif
-#define SvSTASH(sv) (0 + ((XPVMG*) SvANY(sv))->xmg_stash)
-#endif
-#else
-#define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
-#define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
-#define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_nv
-#define SvPVX(sv) ((sv)->sv_u.svu_pv)
-#define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
-#define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
-#define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
-
-#ifdef DEBUGGING
-#define SvMAGIC(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_magic))
-#define SvSTASH(sv) (*(assert(SvTYPE(sv) >= SVt_PVMG), &((XPVMG*) SvANY(sv))->xmg_stash))
#else
-#define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
-#define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
+# define SvPVX(sv) ((sv)->sv_u.svu_pv)
+# define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
+# define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
+# define SvEND(sv) ((sv)->sv_u.svu_pv + ((XPV*)SvANY(sv))->xpv_cur)
+
+# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+/* These get expanded inside other macros that already use a variable _sv */
+# define SvIVX(sv) \
+ (*({ SV *const _svi = (SV *) sv; \
+ assert(SvTYPE(_svi) == SVt_IV || SvTYPE(_svi) >= SVt_PVIV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ &(((XPVIV*) SvANY(_svi))->xiv_iv); \
+ }))
+# define SvUVX(sv) \
+ (*({ SV *const _svi = (SV *) sv; \
+ assert(SvTYPE(_svi) == SVt_IV || SvTYPE(_svi) >= SVt_PVIV); \
+ assert(SvTYPE(_svi) != SVt_PVAV); \
+ assert(SvTYPE(_svi) != SVt_PVHV); \
+ assert(SvTYPE(_svi) != SVt_PVCV); \
+ &(((XPVUV*) SvANY(_svi))->xuv_uv); \
+ }))
+# define SvNVX(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_PVFM); \
+ &(((XPVNV*) SvANY(_svi))->xnv_nv); \
+ }))
+# define SvMAGIC(sv) \
+ (*({ SV *const _svi = (SV *) sv; \
+ assert(SvTYPE(_svi) >= SVt_PVMG); \
+ &(((XPVMG*) SvANY(_svi))->xmg_u.xmg_magic); \
+ }))
+# define SvSTASH(sv) \
+ (*({ SV *const _svi = (SV *) sv; \
+ assert(SvTYPE(_svi) >= SVt_PVMG); \
+ &(((XPVMG*) SvANY(_svi))->xmg_stash); \
+ }))
+# else
+# define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
+# define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
+# define SvNVX(sv) ((XPVNV*) SvANY(sv))->xnv_nv
+# define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_u.xmg_magic
+# define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
+# endif
#endif
+#ifndef PERL_POISON
+/* Given that these two are new, there can't be any existing code using them
+ * as LVALUEs */
+# define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv)
+# define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv))
+#else
+/* Except for the poison code, which uses & to scribble over the pointer after
+ free() is called. */
+# define SvPVX_mutable(sv) ((sv)->sv_u.svu_pv)
+# define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv))
#endif
#define SvIVXx(sv) SvIVX(sv)
(((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END
#define SvNV_set(sv, val) \
STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
+ assert(SvTYPE(sv) != SVt_PVAV); assert(SvTYPE(sv) != SVt_PVHV); \
(((XPVNV*)SvANY(sv))->xnv_nv = (val)); } STMT_END
#define SvPV_set(sv, val) \
STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
((sv)->sv_u.svu_rv = (val)); } STMT_END
#define SvMAGIC_set(sv, val) \
STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
- (((XPVMG*)SvANY(sv))->xmg_magic = (val)); } STMT_END
+ (((XPVMG*)SvANY(sv))->xmg_u.xmg_magic = (val)); } STMT_END
#define SvSTASH_set(sv, val) \
STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
(((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
SvPV_renew(sv, _lEnGtH); \
} STMT_END
-#define SvPV_free(sv) \
- STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
- if (SvLEN(sv)) { \
- if(SvOOK(sv)) { \
- Safefree(SvPVX(sv) - SvIVX(sv)); \
- SvFLAGS(sv) &= ~SVf_OOK; \
- } else { \
- Safefree(SvPVX(sv)); \
- } \
- } \
- } STMT_END
-
-#define SvPVX_const(sv) ((const char*)SvPVX(sv))
+#define SvPV_free(sv) \
+ STMT_START { \
+ assert(SvTYPE(sv) >= SVt_PV); \
+ if (SvLEN(sv)) { \
+ if(SvOOK(sv)) { \
+ SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); \
+ SvFLAGS(sv) &= ~SVf_OOK; \
+ } \
+ Safefree(SvPVX(sv)); \
+ } \
+ } STMT_END
#define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
#define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
=cut
*/
+#define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0)
+
#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
#define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
/* ----*/
#define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
+#define SvPV_const(sv, lp) SvPV_flags_const(sv, lp, SV_GMAGIC)
+#define SvPV_mutable(sv, lp) SvPV_flags_mutable(sv, lp, SV_GMAGIC)
#define SvPV_flags(sv, lp, flags) \
((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
+#define SvPV_flags_const(sv, lp, flags) \
+ ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
+ ? ((lp = SvCUR(sv)), SvPVX_const(sv)) : \
+ (const char*) sv_2pv_flags(sv, &lp, flags|SV_CONST_RETURN))
+#define SvPV_flags_const_nolen(sv, flags) \
+ ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
+ ? SvPVX_const(sv) : \
+ (const char*) sv_2pv_flags(sv, 0, flags|SV_CONST_RETURN))
+#define SvPV_flags_mutable(sv, lp, flags) \
+ ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
+ ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) : \
+ sv_2pv_flags(sv, &lp, flags|SV_MUTABLE_RETURN))
#define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
+#define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC)
+#define SvPV_force_mutable(sv, lp) SvPV_force_flags_mutable(sv, lp, SV_GMAGIC)
#define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
+#define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0)
#define SvPV_force_flags(sv, lp, flags) \
((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
+#define SvPV_force_flags_nolen(sv, flags) \
+ ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
+ ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags))
+#define SvPV_force_flags_mutable(sv, lp, flags) \
+ ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
+ ? ((lp = SvCUR(sv)), SvPVX_mutable(sv)) \
+ : sv_pvn_force_flags(sv, &lp, flags|SV_MUTABLE_RETURN))
#define SvPV_nolen(sv) \
((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
- ? SvPVX(sv) : sv_2pv_nolen(sv))
+ ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC))
+
+#define SvPV_nolen_const(sv) \
+ ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
+ ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN))
#define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
+#define SvPV_nomg_const(sv, lp) SvPV_flags_const(sv, lp, 0)
+#define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0)
/* ----*/
#define SvPVutf8_nolen(sv) \
((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
- ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
+ ? SvPVX(sv) : sv_2pvutf8(sv, 0))
/* ----*/
#define SvPVbyte_nolen(sv) \
((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
- ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
+ ? SvPVX(sv) : sv_2pvbyte(sv, 0))
# define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); })
# define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); })
# define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); })
+# define SvPVx_const(sv, lp) ({SV *_sv = (sv); SvPV_const(_sv, lp); })
+# define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); })
+# define SvPVx_nolen_const(sv) ({SV *_sv = (sv); SvPV_nolen_const(_sv); })
# define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); })
# define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); })
+# define SvPVbytex_nolen(sv) ({SV *_sv = (sv); SvPVbyte_nolen(_sv); })
# define SvTRUE(sv) ( \
!sv \
? 0 \
# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
# define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
+# define SvPVx_const(sv, lp) ((PL_Sv = (sv)), SvPV_const(PL_Sv, lp))
+# define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv))
+# define SvPVx_nolen_const(sv) ((PL_Sv = (sv)), SvPV_nolen_const(PL_Sv))
# define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
# define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
+# define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv))
# define SvTRUE(sv) ( \
!sv \
? 0 \
(SVf_FAKE | SVf_READONLY))
#define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
+#define SvSHARED_HEK_FROM_PV(pvx) \
+ ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key)))
+#define SvSHARED_HASH(sv) (0 + SvSHARED_HEK_FROM_PV(SvPVX_const(sv))->hek_hash)
+
/* flag values for sv_*_flags functions */
#define SV_IMMEDIATE_UNREF 1
#define SV_GMAGIC 2
#define SV_COW_DROP_PV 4
#define SV_UTF8_NO_ENCODING 8
#define SV_NOSTEAL 16
+#define SV_CONST_RETURN 32
+#define SV_MUTABLE_RETURN 64
+#define SV_SMAGIC 128
+
+#define sv_unref(sv) sv_unref_flags(sv, 0)
+#define sv_force_normal(sv) sv_force_normal_flags(sv, 0)
/* We are about to replace the SV's current value. So if it's copy on write
we need to normalise it. Use the SV_COW_DROP_PV flag hint to say that
#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
sv_force_normal_flags(sv, SV_COW_DROP_PV)
-#ifdef PERL_COPY_ON_WRITE
+#ifdef PERL_OLD_COPY_ON_WRITE
# define SvRELEASE_IVX(sv) ((void)((SvFLAGS(sv) & (SVf_OOK|SVf_READONLY|SVf_FAKE)) \
&& Perl_sv_release_IVX(aTHX_ sv)))
# define SvIsCOW_normal(sv) (SvIsCOW(sv) && SvLEN(sv))
+#else
+# define SvRELEASE_IVX(sv) SvOOK_off(sv)
+#endif /* PERL_OLD_COPY_ON_WRITE */
#define CAN_COW_MASK (SVs_OBJECT|SVs_GMG|SVs_SMG|SVs_RMG|SVf_IOK|SVf_NOK| \
SVf_POK|SVf_ROK|SVp_IOK|SVp_NOK|SVp_POK|SVf_FAKE| \
SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_AMAGIC)
#define CAN_COW_FLAGS (SVp_POK|SVf_POK)
-#else
-# define SvRELEASE_IVX(sv) SvOOK_off(sv)
-#endif /* PERL_COPY_ON_WRITE */
-
#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
sv_force_normal_flags(sv, 0)
#define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
#define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
#define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
+#define sv_catsv_mg(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC|SV_SMAGIC)
#define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
+#define sv_catpvn_mg(sv, sstr, slen) \
+ sv_catpvn_flags(sv, sstr, slen, SV_GMAGIC|SV_SMAGIC);
#define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
+#define sv_2pv_nolen(sv) sv_2pv(sv, 0)
+#define sv_2pvbyte_nolen(sv) sv_2pvbyte(sv, 0)
+#define sv_2pvutf8_nolen(sv) sv_2pvutf8(sv, 0)
#define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
#define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
#define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
#define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
+#define SvGROW_mutable(sv,len) \
+ (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX_mutable(sv))
#define Sv_Grow sv_grow
#define CLONEf_COPY_STACKS 1
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