typedef enum {
- SVt_NULL, /* 0 */
- /* BIND was here, before INVLIST replaced it. */
- SVt_IV, /* 1 */
- SVt_NV, /* 2 */
- /* RV was here, before it was merged with IV. */
- SVt_PV, /* 3 */
- SVt_INVLIST, /* 4, implemented as a PV */
- SVt_PVIV, /* 5 */
- SVt_PVNV, /* 6 */
- SVt_PVMG, /* 7 */
- SVt_REGEXP, /* 8 */
- /* PVBM was here, before BIND replaced it. */
- SVt_PVGV, /* 9 */
- SVt_PVLV, /* 10 */
- SVt_PVAV, /* 11 */
- SVt_PVHV, /* 12 */
- SVt_PVCV, /* 13 */
- SVt_PVFM, /* 14 */
- SVt_PVIO, /* 15 */
+ SVt_NULL, /* 0 */
+ /* BIND was here, before INVLIST replaced it. */
+ SVt_IV, /* 1 */
+ SVt_NV, /* 2 */
+ /* RV was here, before it was merged with IV. */
+ SVt_PV, /* 3 */
+ SVt_INVLIST, /* 4, implemented as a PV */
+ SVt_PVIV, /* 5 */
+ SVt_PVNV, /* 6 */
+ SVt_PVMG, /* 7 */
+ SVt_REGEXP, /* 8 */
+ /* PVBM was here, before BIND replaced it. */
+ SVt_PVGV, /* 9 */
+ SVt_PVLV, /* 10 */
+ SVt_PVAV, /* 11 */
+ SVt_PVHV, /* 12 */
+ SVt_PVCV, /* 13 */
+ SVt_PVFM, /* 14 */
+ SVt_PVIO, /* 15 */
/* 16-31: Unused, though one should be reserved for a
* freed sv, if the other 3 bits below the flags ones
* get allocated */
- SVt_LAST /* keep last in enum. used to size arrays */
+ SVt_LAST /* keep last in enum. used to size arrays */
} svtype;
/* *** any alterations to the SV types above need to be reflected in
* SVt_MASK and the various PL_valid_types_* tables. As of this writing those
* tables are in perl.h. There are also two affected names tables in dump.c,
- * one in B.xs, and 'bodies_by_type[]' in sv.c.
+ * one in B.xs, and 'bodies_by_type[]' in sv_inline.h.
*
* The bits that match 0xe0 are CURRENTLY UNUSED
* The bits above that are for flags, like SVf_IOK */
# define SVt_RV SVt_IV
#endif
-/* There is collusion here with sv_clear - sv_clear exits early for SVt_NULL
- 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
- non-zero to record the size of HEs, without fear of bogus frees. */
+/* The array of arena roots for SV bodies is indexed by SvTYPE. SVt_NULL doesn't
+ * use a body, so that arena root is re-used for HEs. SVt_IV also doesn't, so
+ * that arena root is used for HVs with struct xpvhv_aux. */
+
#if defined(PERL_IN_HV_C) || defined(PERL_IN_XS_APITEST)
-#define HE_SVSLOT SVt_NULL
+# define HE_ARENA_ROOT_IX SVt_NULL
+#endif
+#if defined(PERL_IN_HV_C) || defined(PERL_IN_SV_C)
+# define HVAUX_ARENA_ROOT_IX SVt_IV
#endif
#ifdef PERL_IN_SV_C
# define SVt_FIRST SVt_NULL /* the type of SV that new_SV() in sv.c returns */
#define _SV_HEAD_UNION \
union { \
- char* svu_pv; /* pointer to malloced string */ \
- IV svu_iv; \
- UV svu_uv; \
- _NV_BODYLESS_UNION \
- SV* svu_rv; /* pointer to another SV */ \
- SV** svu_array; \
- HE** svu_hash; \
- GP* svu_gp; \
- PerlIO *svu_fp; \
+ char* svu_pv; /* pointer to malloced string */ \
+ IV svu_iv; \
+ UV svu_uv; \
+ _NV_BODYLESS_UNION \
+ SV* svu_rv; /* pointer to another SV */ \
+ SV** svu_array; \
+ HE** svu_hash; \
+ GP* svu_gp; \
+ PerlIO *svu_fp; \
} sv_u \
_SV_HEAD_DEBUG
Returns the value of the object's reference count. Exposed
to perl code via Internals::SvREFCNT().
-=for apidoc SvREFCNT_inc
-=for apidoc_item SvREFCNT_inc_NN
-=for apidoc_item SvREFCNT_inc_void
-=for apidoc_item |void|SvREFCNT_inc_void_NN|SV* sv
-=for apidoc_item |SV*|SvREFCNT_inc_simple|SV* sv
-=for apidoc_item |SV*|SvREFCNT_inc_simple_NN|SV* sv
+=for apidoc SvREFCNT_inc
+=for apidoc_item SvREFCNT_inc_NN
+=for apidoc_item |SV* |SvREFCNT_inc_simple|SV* sv
+=for apidoc_item |SV* |SvREFCNT_inc_simple_NN|SV* sv
=for apidoc_item |void|SvREFCNT_inc_simple_void|SV* sv
=for apidoc_item |void|SvREFCNT_inc_simple_void_NN|SV* sv
+=for apidoc_item SvREFCNT_inc_void
+=for apidoc_item |void|SvREFCNT_inc_void_NN|SV* sv
These all increment the reference count of the given SV.
The ones without C<void> in their names return the SV.
#define SvREFCNT_inc_void(sv) Perl_SvREFCNT_inc_void(MUTABLE_SV(sv))
/* These guys don't need the curly blocks */
-#define SvREFCNT_inc_simple_void(sv) STMT_START { if (sv) SvREFCNT(sv)++; } STMT_END
+#define SvREFCNT_inc_simple_void(sv) \
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ if (sv_) \
+ SvREFCNT(sv_)++; \
+ } STMT_END
+
#define SvREFCNT_inc_simple_NN(sv) (++(SvREFCNT(sv)),MUTABLE_SV(sv))
#define SvREFCNT_inc_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv)))
#define SvREFCNT_inc_simple_void_NN(sv) (void)(++SvREFCNT(MUTABLE_SV(sv)))
#define SVphv_CLONEABLE SVp_SCREAM /* PVHV (stashes) clone its objects */
#define SVpgv_GP SVp_SCREAM /* GV has a valid GP */
#define SVprv_PCS_IMPORTED SVp_SCREAM /* RV is a proxy for a constant
- subroutine in another package. Set the
- GvIMPORTED_CV_on() if it needs to be
- expanded to a real GV */
+ subroutine in another package. Set the
+ GvIMPORTED_CV_on() if it needs to be
+ expanded to a real GV */
/* SVf_PROTECT is what SVf_READONLY should have been: i.e. modifying
* this SV is completely illegal. However, SVf_READONLY (via
#define SVf_PROTECT 0x00010000 /* very read-only */
#define SVs_PADTMP 0x00020000 /* in use as tmp */
#define SVs_PADSTALE 0x00040000 /* lexical has gone out of scope;
- only used when !PADTMP */
+ only used when !PADTMP */
#define SVs_TEMP 0x00080000 /* mortal (implies string is stealable) */
#define SVs_OBJECT 0x00100000 /* is "blessed" */
#define SVs_GMG 0x00200000 /* has magical get method */
#define SVs_RMG 0x00800000 /* has random magical methods */
#define SVf_FAKE 0x01000000 /* 0: glob is just a copy
- 1: SV head arena wasn't malloc()ed
- 2: For PVCV, whether CvUNIQUE(cv)
- refers to an eval or once only
- [CvEVAL(cv), CvSPECIAL(cv)]
+ 1: SV head arena wasn't malloc()ed
+ 2: For PVCV, whether CvUNIQUE(cv)
+ refers to an eval or once only
+ [CvEVAL(cv), CvSPECIAL(cv)]
3: HV: informally reserved by DAPM
for vtables
4: Together with other flags (or
including PVLV-as-regex. See
isREGEXP().
*/
-#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_OOK 0x02000000 /* has valid offset value */
+#define SVphv_HasAUX SVf_OOK /* PVHV has an additional hv_aux struct */
#define SVf_BREAK 0x04000000 /* refcnt is artificially low - used by
- SVs in final arena cleanup.
- Set in S_regtry on PL_reg_curpm, so that
- perl_destruct will skip it.
+ SVs in final arena cleanup.
+ Set in S_regtry on PL_reg_curpm, so that
+ perl_destruct will skip it.
Used for mark and sweep by OP_AASSIGN
*/
#define SVf_READONLY 0x08000000 /* may not be modified */
#define SVf_THINKFIRST (SVf_READONLY|SVf_PROTECT|SVf_ROK|SVf_FAKE \
- |SVs_RMG|SVf_IsCOW)
+ |SVs_RMG|SVf_IsCOW)
#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
- SVp_IOK|SVp_NOK|SVp_POK|SVpgv_GP)
+ SVp_IOK|SVp_NOK|SVp_POK|SVpgv_GP)
#define PRIVSHIFT 4 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
*/
#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
#define SVf_IsCOW 0x10000000 /* copy on write (shared hash key if
- SvLEN == 0) */
+ SvLEN == 0) */
/* Ensure this value does not clash with the GV_ADD* flags in gv.h, or the
CV_CKPROTO_* flags in op.c, or the padadd_* flags in pad.h: */
#define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded
- This is also set on RVs whose overloaded
- stringification is UTF-8. This might
- only happen as a side effect of SvPV() */
+ This is also set on RVs whose overloaded
+ stringification is UTF-8. This might
+ only happen as a side effect of SvPV() */
/* PVHV */
#define SVphv_SHAREKEYS 0x20000000 /* PVHV keys live on shared string table */
/* Some private flags. */
+/* scalar SVs with SVp_POK */
+#define SVppv_STATIC 0x40000000 /* PV is pointer to static const; must be set with SVf_IsCOW */
/* PVAV */
#define SVpav_REAL 0x40000000 /* free old entries */
/* PVHV */
union _xmgu xmg_u; \
STRLEN xpv_cur; /* length of svu_pv as a C string */ \
union { \
- STRLEN xpvlenu_len; /* allocated size */ \
+ STRLEN xpvlenu_len; /* allocated size */ \
struct regexp* xpvlenu_rx; /* regex when SV body is XPVLV */ \
- } xpv_len_u
+ } xpv_len_u
#define xpv_len xpv_len_u.xpvlenu_len
union _xivu xiv_u;
union _xnvu xnv_u;
union {
- STRLEN xlvu_targoff;
- SSize_t xlvu_stargoff;
+ STRLEN xlvu_targoff;
+ SSize_t xlvu_stargoff;
} xlv_targoff_u;
STRLEN xlv_targlen;
SV* xlv_targ;
char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re
- * y=alem/helem/iter t=tie T=tied HE */
+ * y=alem/helem/iter t=tie T=tied HE */
char xlv_flags; /* 1 = negative offset 2 = negative len
4 = out of range (vec) */
};
#define _XPVCV_COMMON \
HV * xcv_stash; \
union { \
- OP * xcv_start; \
- ANY xcv_xsubany; \
+ OP * xcv_start; \
+ ANY xcv_xsubany; \
} xcv_start_u; \
union { \
- OP * xcv_root; \
- void (*xcv_xsub) (pTHX_ CV*); \
+ OP * xcv_root; \
+ void (*xcv_xsub) (pTHX_ CV*); \
} xcv_root_u; \
union { \
- GV * xcv_gv; \
- HEK * xcv_hek; \
+ GV * xcv_gv; \
+ HEK * xcv_hek; \
} xcv_gv_u; \
char * xcv_file; \
union { \
- PADLIST * xcv_padlist; \
- void * xcv_hscxt; \
+ PADLIST * xcv_padlist; \
+ void * xcv_hscxt; \
} xcv_padlist_u; \
CV * xcv_outside; \
U32 xcv_outside_seq; /* the COP sequence (at the point of our \
- * compilation) in the lexically enclosing \
- * sub */ \
+ * compilation) in the lexically enclosing \
+ * sub */ \
cv_flags_t xcv_flags; \
I32 xcv_depth /* >= 2 indicates recursive call */
* to hang any IO disciplines to.
*/
union {
- DIR * xiou_dirp; /* for opendir, readdir, etc */
- void * xiou_any; /* for alignment */
+ DIR * xiou_dirp; /* for opendir, readdir, etc */
+ void * xiou_any; /* for alignment */
} xio_dirpu;
/* IV xio_lines is now in IVX $. */
IV xio_page; /* $% */
#define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
#define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
#define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge)
- Also, when this is set, SvPVX() is valid */
+ Also, when this is set, SvPVX() is valid */
/* The following macros define implementation-independent predicates on SVs. */
Tells an SV that it is a string and disables all other C<OK> bits.
Will also turn off the UTF-8 status.
+=for apidoc Am|U32|SvBoolFlagsOK|SV* sv
+Returns a bool indicating whether the SV has the right flags set such
+that it is safe to call C<BOOL_INTERNALS_sv_isbool()> or
+C<BOOL_INTERNALS_sv_isbool_true()> or
+C<BOOL_INTERNALS_sv_isbool_false()>. Currently equivalent to
+C<SvIandPOK(sv)> or C<SvIOK(sv) && SvPOK(sv)>. Serialization may want to
+unroll this check. If so you are strongly recommended to add code like
+C<assert(SvBoolFlagsOK(sv));> B<before> calling using any of the
+BOOL_INTERNALS macros.
+
+=for apidoc Am|U32|SvIandPOK|SV* sv
+Returns a bool indicating whether the SV is both C<SvPOK()> and
+C<SvIOK()> at the same time. Equivalent to C<SvIOK(sv) && SvPOK(sv)> but
+more efficient.
+
+=for apidoc Am|void|SvIandPOK_on|SV* sv
+Tells an SV that is a string and a number in one operation. Equivalent
+to C<SvIOK_on(sv); SvPOK_on(sv);> but more efficient.
+
+=for apidoc Am|void|SvIandPOK_off|SV* sv
+Unsets the PV and IV status of an SV in one operation. Equivalent to
+C<SvIOK_off(sv); SvPK_off(v);> but more efficient.
+
+=for apidoc Am|bool|BOOL_INTERNALS_sv_isbool|SV* sv
+Checks if a C<SvBoolFlagsOK()> sv is a bool. B<Note> that it is the
+caller's responsibility to ensure that the sv is C<SvBoolFlagsOK()> before
+calling this. This is only useful in specialized logic like
+serialization code where performance is critical and the flags have
+already been checked to be correct. Almost always you should be using
+C<sv_isbool(sv)> instead.
+
+=for apidoc Am|bool|BOOL_INTERNALS_sv_isbool_true|SV* sv
+Checks if a C<SvBoolFlagsOK()> sv is a true bool. B<Note> that it is
+the caller's responsibility to ensure that the sv is C<SvBoolFlagsOK()>
+before calling this. This is only useful in specialized logic like
+serialization code where performance is critical and the flags have
+already been checked to be correct. This is B<NOT> what you should use
+to check if an SV is "true", for that you should be using
+C<SvTRUE(sv)> instead.
+
+=for apidoc Am|bool|BOOL_INTERNALS_sv_isbool_false|SV* sv
+Checks if a C<SvBoolFlagsOK()> sv is a false bool. B<Note> that it is
+the caller's responsibility to ensure that the sv is C<SvBoolFlagsOK()>
+before calling this. This is only useful in specialized logic like
+serialization code where performance is critical and the flags have
+already been checked to be correct. This is B<NOT> what you should use
+to check if an SV is "false", for that you should be using
+C<!SvTRUE(sv)> instead.
+
=for apidoc Am|bool|SvVOK|SV* sv
Returns a boolean indicating whether the SV contains a v-string.
=for apidoc Am|U32|SvOOK|SV* sv
Returns a U32 indicating whether the pointer to the string buffer is offset.
This hack is used internally to speed up removal of characters from the
-beginning of a C<SvPV>. When C<SvOOK> is true, then the start of the
+beginning of a C<L</SvPV>>. When C<SvOOK> is true, then the start of the
allocated string buffer is actually C<SvOOK_offset()> bytes before C<SvPVX>.
This offset used to be stored in C<SvIVX>, but is now stored within the spare
part of the buffer.
Returns the raw value in the SV's NV slot, without checks or conversions.
Only use when you are sure C<SvNOK> is true. See also C<L</SvNV>>.
-=for apidoc Am|char*|SvPVX|SV* sv
-=for apidoc_item |char*|SvPVXx|SV* sv
+=for apidoc Am |char* |SvPVX|SV* sv
=for apidoc_item |const char*|SvPVX_const|SV* sv
-=for apidoc_item |char*|SvPVX_mutable|SV* sv
+=for apidoc_item |char* |SvPVX_mutable|SV* sv
+=for apidoc_item |char* |SvPVXx|SV* sv
These return a pointer to the physical string in the SV. The SV must contain a
string. Prior to 5.9.3 it is not safe to execute these unless the SV's
(unless you cast away const yourself).
=for apidoc Am|STRLEN|SvCUR|SV* sv
-Returns the length of the string which is in the SV. See C<L</SvLEN>>.
+Returns the length, in bytes, of the PV inside the SV.
+Note that this may not match Perl's C<length>; for that, use
+C<sv_len_utf8(sv)>. See C<L</SvLEN>> also.
=for apidoc Am|STRLEN|SvLEN|SV* sv
Returns the size of the string buffer in the SV, not including any part
=for apidoc Am|void|SvIV_set|SV* sv|IV val
Set the value of the IV pointer in sv to val. It is possible to perform
the same function of this macro with an lvalue assignment to C<SvIVX>.
-With future Perls, however, it will be more efficient to use
+With future Perls, however, it will be more efficient to use
C<SvIV_set> instead of the lvalue assignment to C<SvIVX>.
=for apidoc Am|void|SvNV_set|SV* sv|NV val
Set the value of the STASH pointer in C<sv> to val. See C<L</SvIV_set>>.
=for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
-Set the current length of the string which is in the SV. See C<L</SvCUR>>
-and C<SvIV_set>>.
+Sets the current length, in bytes, of the C string which is in the SV.
+See C<L</SvCUR>> and C<SvIV_set>>.
=for apidoc Am|void|SvLEN_set|SV* sv|STRLEN len
Set the size of the string buffer for the SV. See C<L</SvLEN>>.
#define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
#define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
#define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
- SVp_IOK|SVp_NOK|SVf_IVisUV))
+ SVp_IOK|SVp_NOK|SVf_IVisUV))
#define assert_not_ROK(sv) assert_(!SvROK(sv) || !SvRV(sv))
#define assert_not_glob(sv) assert_(!isGV_with_GP(sv))
#define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
#define SvOK_off(sv) (assert_not_ROK(sv) assert_not_glob(sv) \
- SvFLAGS(sv) &= ~(SVf_OK| \
- SVf_IVisUV|SVf_UTF8), \
- SvOOK_off(sv))
+ SvFLAGS(sv) &= ~(SVf_OK| \
+ SVf_IVisUV|SVf_UTF8), \
+ SvOOK_off(sv))
#define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \
- SvFLAGS(sv) &= ~(SVf_OK| \
- SVf_UTF8), \
- SvOOK_off(sv))
+ SvFLAGS(sv) &= ~(SVf_OK| \
+ SVf_UTF8), \
+ SvOOK_off(sv))
#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
#define SvIOKp_on(sv) (assert_not_glob(sv) \
- SvFLAGS(sv) |= SVp_IOK)
+ SvFLAGS(sv) |= SVp_IOK)
#define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
#define SvNOKp_on(sv) (assert_not_glob(sv) SvFLAGS(sv) |= SVp_NOK)
#define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
#define SvPOKp_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \
- SvFLAGS(sv) |= SVp_POK)
+ SvFLAGS(sv) |= SVp_POK)
#define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
#define SvIOK_on(sv) (assert_not_glob(sv) \
- SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
+ SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
#define SvIOK_only(sv) (SvOK_off(sv), \
- SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
+ SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvIOK_only_UV(sv) (assert_not_glob(sv) SvOK_off_exc_UV(sv), \
- SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
+ SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
- == (SVf_IOK|SVf_IVisUV))
+ == (SVf_IOK|SVf_IVisUV))
#define SvUOK(sv) SvIOK_UV(sv)
#define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
- == SVf_IOK)
+ == SVf_IOK)
+
+#define SvIandPOK(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_POK)) == (SVf_IOK|SVf_POK))
+#define SvIandPOK_on(sv) (assert_not_glob(sv) \
+ (SvFLAGS(sv) |= (SVf_IOK|SVp_IOK|SVf_POK|SVp_POK)))
+#define SvIandPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV|SVf_POK|SVp_POK))
+
+#define SvBoolFlagsOK(sv) SvIandPOK(sv)
+
+#define BOOL_INTERNALS_sv_isbool(sv) (SvIsCOW_static(sv) && \
+ (SvPVX_const(sv) == PL_Yes || SvPVX_const(sv) == PL_No))
+#define BOOL_INTERNALS_sv_isbool_true(sv) (SvIsCOW_static(sv) && \
+ (SvPVX_const(sv) == PL_Yes))
+#define BOOL_INTERNALS_sv_isbool_false(sv) (SvIsCOW_static(sv) && \
+ (SvPVX_const(sv) == PL_No))
#define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
#define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
#define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
#define SvNOK_on(sv) (assert_not_glob(sv) \
- SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
+ SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
#define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
#define SvNOK_only(sv) (SvOK_off(sv), \
- SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
+ SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
/*
=for apidoc Am|U32|SvUTF8|SV* sv
Returns a U32 value indicating the UTF-8 status of an SV. If things are set-up
properly, this indicates whether or not the SV contains UTF-8 encoded data.
-You should use this I<after> a call to C<SvPV()> or one of its variants, in
+You should use this I<after> a call to C<L</SvPV>> or one of its variants, in
case any call to string overloading updates the internal flag.
If you want to take into account the L<bytes> pragma, use C<L</DO_UTF8>>
#define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
#define SvPOK_on(sv) (assert_not_ROK(sv) assert_not_glob(sv) \
- SvFLAGS(sv) |= (SVf_POK|SVp_POK))
+ SvFLAGS(sv) |= (SVf_POK|SVp_POK))
#define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
#define SvPOK_only(sv) (assert_not_ROK(sv) assert_not_glob(sv) \
- SvFLAGS(sv) &= ~(SVf_OK| \
- SVf_IVisUV|SVf_UTF8), \
- SvFLAGS(sv) |= (SVf_POK|SVp_POK))
+ SvFLAGS(sv) &= ~(SVf_OK| \
+ SVf_IVisUV|SVf_UTF8), \
+ SvFLAGS(sv) |= (SVf_POK|SVp_POK))
#define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) assert_not_glob(sv) \
- SvFLAGS(sv) &= ~(SVf_OK| \
- SVf_IVisUV), \
- SvFLAGS(sv) |= (SVf_POK|SVp_POK))
+ SvFLAGS(sv) &= ~(SVf_OK| \
+ SVf_IVisUV), \
+ SvFLAGS(sv) |= (SVf_POK|SVp_POK))
#define SvVOK(sv) (SvMAGICAL(sv) \
- && mg_find(sv,PERL_MAGIC_vstring))
+ && mg_find(sv,PERL_MAGIC_vstring))
/*
=for apidoc Am|MAGIC*|SvVSTRING_mg|SV * sv
=cut
*/
#define SvVSTRING_mg(sv) (SvMAGICAL(sv) \
- ? mg_find(sv,PERL_MAGIC_vstring) : NULL)
+ ? mg_find(sv,PERL_MAGIC_vstring) : NULL)
#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
#define SvOOK_on(sv) (SvFLAGS(sv) |= SVf_OOK)
#define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
#define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
+/*
+=for apidoc Am|bool|SvAMAGIC|SV * sv
+
+Returns a boolean as to whether C<sv> has overloading (active magic) enabled or
+not.
+
+=cut
+*/
+
#define SvAMAGIC(sv) (SvROK(sv) && SvOBJECT(SvRV(sv)) && \
- HvAMAGIC(SvSTASH(SvRV(sv))))
+ HvAMAGIC(SvSTASH(SvRV(sv))))
/* To be used on the stashes themselves: */
#define HvAMAGIC(hv) (SvFLAGS(hv) & SVf_AMAGIC)
((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_IOK|SVf_NOK|SVf_ROK|SVpgv_GP|SVf_THINKFIRST|SVs_GMG)) == SVf_POK)
/*
+=for apidoc Am|bool|SvIsBOOL|SV* sv
+
+Returns true if the SV is one of the special boolean constants (PL_sv_yes or
+PL_sv_no), or is a regular SV whose last assignment stored a copy of one.
+
+=cut
+*/
+
+#define SvIsBOOL(sv) Perl_sv_isbool(aTHX_ sv)
+
+/*
=for apidoc Am|U32|SvGAMAGIC|SV* sv
Returns true if the SV has get magic or
#define SvGAMAGIC(sv) (SvGMAGICAL(sv) || SvAMAGIC(sv))
#define Gv_AMG(stash) \
- (HvNAME(stash) && Gv_AMupdate(stash,FALSE) \
- ? 1 \
- : (HvAMAGIC_off(stash), 0))
+ (HvNAME(stash) && Gv_AMupdate(stash,FALSE) \
+ ? 1 \
+ : (HvAMAGIC_off(stash), 0))
#define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
- == (SVf_ROK|SVprv_WEAKREF))
+ == (SVf_ROK|SVprv_WEAKREF))
#define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
#define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
#define SvPCS_IMPORTED(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_PCS_IMPORTED)) \
- == (SVf_ROK|SVprv_PCS_IMPORTED))
+ == (SVf_ROK|SVprv_PCS_IMPORTED))
#define SvPCS_IMPORTED_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_PCS_IMPORTED))
#define SvPCS_IMPORTED_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_PCS_IMPORTED))
#if defined (DEBUGGING) && defined(PERL_USE_GCC_BRACE_GROUPS)
# define SvTAIL(sv) ({ const SV *const _svtail = (const SV *)(sv); \
- assert(SvTYPE(_svtail) != SVt_PVAV); \
- assert(SvTYPE(_svtail) != SVt_PVHV); \
- assert(!(SvFLAGS(_svtail) & (SVf_NOK|SVp_NOK))); \
- assert(SvVALID(_svtail)); \
+ assert(SvTYPE(_svtail) != SVt_PVAV); \
+ assert(SvTYPE(_svtail) != SVt_PVHV); \
+ assert(!(SvFLAGS(_svtail) & (SVf_NOK|SVp_NOK))); \
+ assert(SvVALID(_svtail)); \
((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail; \
- })
+ })
#else
# define SvTAIL(_svtail) (((XPVNV*)SvANY(_svtail))->xnv_u.xnv_bm_tail)
#endif
# if defined (DEBUGGING) && defined(PERL_USE_GCC_BRACE_GROUPS)
/* These get expanded inside other macros that already use a variable _sv */
# define SvPVX(sv) \
- (*({ SV *const _svpvx = MUTABLE_SV(sv); \
- assert(PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]); \
- assert(!isGV_with_GP(_svpvx)); \
- assert(!(SvTYPE(_svpvx) == SVt_PVIO \
- && !(IoFLAGS(_svpvx) & IOf_FAKE_DIRP))); \
- &((_svpvx)->sv_u.svu_pv); \
- }))
+ (*({ SV *const _svpvx = MUTABLE_SV(sv); \
+ assert(PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svpvx)); \
+ assert(!(SvTYPE(_svpvx) == SVt_PVIO \
+ && !(IoFLAGS(_svpvx) & IOf_FAKE_DIRP))); \
+ &((_svpvx)->sv_u.svu_pv); \
+ }))
# ifdef PERL_CORE
# define SvCUR(sv) \
- ({ const SV *const _svcur = (const SV *)(sv); \
- assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK]); \
- assert(!isGV_with_GP(_svcur)); \
- assert(!(SvTYPE(_svcur) == SVt_PVIO \
- && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \
- (((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \
- })
+ ({ const SV *const _svcur = (const SV *)(sv); \
+ assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svcur)); \
+ assert(!(SvTYPE(_svcur) == SVt_PVIO \
+ && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \
+ (((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \
+ })
# else
# define SvCUR(sv) \
- (*({ const SV *const _svcur = (const SV *)(sv); \
- assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK]); \
- assert(!isGV_with_GP(_svcur)); \
- assert(!(SvTYPE(_svcur) == SVt_PVIO \
- && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \
- &(((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \
- }))
+ (*({ const SV *const _svcur = (const SV *)(sv); \
+ assert(PL_valid_types_PVX[SvTYPE(_svcur) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svcur)); \
+ assert(!(SvTYPE(_svcur) == SVt_PVIO \
+ && !(IoFLAGS(_svcur) & IOf_FAKE_DIRP))); \
+ &(((XPV*) MUTABLE_PTR(SvANY(_svcur)))->xpv_cur); \
+ }))
# endif
# define SvIVX(sv) \
- (*({ const SV *const _svivx = (const SV *)(sv); \
- assert(PL_valid_types_IVX[SvTYPE(_svivx) & SVt_MASK]); \
- assert(!isGV_with_GP(_svivx)); \
- &(((XPVIV*) MUTABLE_PTR(SvANY(_svivx)))->xiv_iv); \
- }))
+ (*({ const SV *const _svivx = (const SV *)(sv); \
+ assert(PL_valid_types_IVX[SvTYPE(_svivx) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svivx)); \
+ &(((XPVIV*) MUTABLE_PTR(SvANY(_svivx)))->xiv_iv); \
+ }))
# define SvUVX(sv) \
- (*({ const SV *const _svuvx = (const SV *)(sv); \
- assert(PL_valid_types_IVX[SvTYPE(_svuvx) & SVt_MASK]); \
- assert(!isGV_with_GP(_svuvx)); \
- &(((XPVUV*) MUTABLE_PTR(SvANY(_svuvx)))->xuv_uv); \
- }))
+ (*({ const SV *const _svuvx = (const SV *)(sv); \
+ assert(PL_valid_types_IVX[SvTYPE(_svuvx) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svuvx)); \
+ &(((XPVUV*) MUTABLE_PTR(SvANY(_svuvx)))->xuv_uv); \
+ }))
# define SvNVX(sv) \
- (*({ const SV *const _svnvx = (const SV *)(sv); \
- assert(PL_valid_types_NVX[SvTYPE(_svnvx) & SVt_MASK]); \
- assert(!isGV_with_GP(_svnvx)); \
- &(((XPVNV*) MUTABLE_PTR(SvANY(_svnvx)))->xnv_u.xnv_nv); \
- }))
+ (*({ const SV *const _svnvx = (const SV *)(sv); \
+ assert(PL_valid_types_NVX[SvTYPE(_svnvx) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svnvx)); \
+ &(((XPVNV*) MUTABLE_PTR(SvANY(_svnvx)))->xnv_u.xnv_nv); \
+ }))
# define SvRV(sv) \
- (*({ SV *const _svrv = MUTABLE_SV(sv); \
- assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \
- assert(!isGV_with_GP(_svrv)); \
- assert(!(SvTYPE(_svrv) == SVt_PVIO \
- && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \
- &((_svrv)->sv_u.svu_rv); \
- }))
+ (*({ SV *const _svrv = MUTABLE_SV(sv); \
+ assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svrv)); \
+ assert(!(SvTYPE(_svrv) == SVt_PVIO \
+ && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \
+ &((_svrv)->sv_u.svu_rv); \
+ }))
# define SvRV_const(sv) \
- ({ const SV *const _svrv = (const SV *)(sv); \
- assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \
- assert(!isGV_with_GP(_svrv)); \
- assert(!(SvTYPE(_svrv) == SVt_PVIO \
- && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \
- (_svrv)->sv_u.svu_rv; \
- })
+ ({ const SV *const _svrv = (const SV *)(sv); \
+ assert(PL_valid_types_RV[SvTYPE(_svrv) & SVt_MASK]); \
+ assert(!isGV_with_GP(_svrv)); \
+ assert(!(SvTYPE(_svrv) == SVt_PVIO \
+ && !(IoFLAGS(_svrv) & IOf_FAKE_DIRP))); \
+ (_svrv)->sv_u.svu_rv; \
+ })
# define SvMAGIC(sv) \
- (*({ const SV *const _svmagic = (const SV *)(sv); \
- assert(SvTYPE(_svmagic) >= SVt_PVMG); \
- &(((XPVMG*) MUTABLE_PTR(SvANY(_svmagic)))->xmg_u.xmg_magic); \
- }))
+ (*({ const SV *const _svmagic = (const SV *)(sv); \
+ assert(SvTYPE(_svmagic) >= SVt_PVMG); \
+ &(((XPVMG*) MUTABLE_PTR(SvANY(_svmagic)))->xmg_u.xmg_magic); \
+ }))
# define SvSTASH(sv) \
- (*({ const SV *const _svstash = (const SV *)(sv); \
- assert(SvTYPE(_svstash) >= SVt_PVMG); \
- &(((XPVMG*) MUTABLE_PTR(SvANY(_svstash)))->xmg_stash); \
- }))
+ (*({ const SV *const _svstash = (const SV *)(sv); \
+ assert(SvTYPE(_svstash) >= SVt_PVMG); \
+ &(((XPVMG*) MUTABLE_PTR(SvANY(_svstash)))->xmg_stash); \
+ }))
# else /* Below is not DEBUGGING or can't use brace groups */
# define SvPVX(sv) ((sv)->sv_u.svu_pv)
# define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
#ifndef PERL_POISON
/* Given that these two are new, there can't be any existing code using them
* as LVALUEs, so prevent that from happening */
-# define SvPVX_mutable(sv) (0 + (sv)->sv_u.svu_pv)
-# define SvPVX_const(sv) ((const char*)(0 + (sv)->sv_u.svu_pv))
+# define SvPVX_mutable(sv) ((char *)((sv)->sv_u.svu_pv))
+# define SvPVX_const(sv) ((const char*)((sv)->sv_u.svu_pv))
#else
/* Except for the poison code, which uses & to scribble over the pointer after
free() is called. */
Not guaranteed to stay returning void */
/* Macro won't actually call sv_2iv if already IOK */
#define SvIV_please(sv) \
- STMT_START {if (!SvIOKp(sv) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK))) \
- (void) SvIV(sv); } STMT_END
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ if (!SvIOKp(sv_) && (SvFLAGS(sv_) & (SVf_NOK|SVf_POK))) \
+ (void) SvIV(sv_); \
+ } STMT_END
#define SvIV_please_nomg(sv) \
- (!(SvFLAGS(sv) & (SVf_IOK|SVp_IOK)) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK)) \
- ? (sv_2iv_flags(sv, 0), SvIOK(sv)) \
- : SvIOK(sv))
+ (!(SvFLAGS(sv) & (SVf_IOK|SVp_IOK)) && (SvFLAGS(sv) & (SVf_NOK|SVf_POK)) \
+ ? (sv_2iv_flags(sv, 0), SvIOK(sv)) \
+ : SvIOK(sv))
+
#define SvIV_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- (((XPVIV*) SvANY(sv))->xiv_iv = (val)); } STMT_END
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert(PL_valid_types_IV_set[SvTYPE(sv_) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv_)); \
+ (((XPVIV*) SvANY(sv_))->xiv_iv = (val)); \
+ } STMT_END
+
#define SvNV_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_NV_set[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- (((XPVNV*)SvANY(sv))->xnv_u.xnv_nv = (val)); } STMT_END
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert(PL_valid_types_NV_set[SvTYPE(sv_) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv_)); \
+ (((XPVNV*)SvANY(sv_))->xnv_u.xnv_nv = (val)); \
+ } STMT_END
+
#define SvPV_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- assert(!(SvTYPE(sv) == SVt_PVIO \
- && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
- ((sv)->sv_u.svu_pv = (val)); } STMT_END
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert(PL_valid_types_PVX[SvTYPE(sv_) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv_)); \
+ assert(!(SvTYPE(sv_) == SVt_PVIO \
+ && !(IoFLAGS(sv_) & IOf_FAKE_DIRP))); \
+ ((sv_)->sv_u.svu_pv = (val)); \
+ } STMT_END
+
#define SvUV_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_IV_set[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- (((XPVUV*)SvANY(sv))->xuv_uv = (val)); } STMT_END
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert(PL_valid_types_IV_set[SvTYPE(sv_) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv_)); \
+ (((XPVUV*)SvANY(sv_))->xuv_uv = (val)); \
+ } STMT_END
+
#define SvRV_set(sv, val) \
STMT_START { \
- assert(PL_valid_types_RV[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- assert(!(SvTYPE(sv) == SVt_PVIO \
- && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
- ((sv)->sv_u.svu_rv = (val)); } STMT_END
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert(PL_valid_types_RV[SvTYPE(sv_) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv_)); \
+ assert(!(SvTYPE(sv_) == SVt_PVIO \
+ && !(IoFLAGS(sv_) & IOf_FAKE_DIRP))); \
+ ((sv_)->sv_u.svu_rv = (val)); \
+ } STMT_END
#define SvMAGIC_set(sv, val) \
STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
(((XPVMG*)SvANY(sv))->xmg_u.xmg_magic = (val)); } STMT_END
STMT_START { assert(SvTYPE(sv) >= SVt_PVMG); \
(((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
#define SvCUR_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- assert(!(SvTYPE(sv) == SVt_PVIO \
- && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
- (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END
+ STMT_START { \
+ assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv)); \
+ assert(!(SvTYPE(sv) == SVt_PVIO \
+ && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
+ (((XPV*) SvANY(sv))->xpv_cur = (val)); } STMT_END
#define SvLEN_set(sv, val) \
- STMT_START { \
- assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \
- assert(!isGV_with_GP(sv)); \
- assert(!(SvTYPE(sv) == SVt_PVIO \
- && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
- (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END
+ STMT_START { \
+ assert(PL_valid_types_PVX[SvTYPE(sv) & SVt_MASK]); \
+ assert(!isGV_with_GP(sv)); \
+ assert(!(SvTYPE(sv) == SVt_PVIO \
+ && !(IoFLAGS(sv) & IOf_FAKE_DIRP))); \
+ (((XPV*) SvANY(sv))->xpv_len = (val)); } STMT_END
#define SvEND_set(sv, val) \
- STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
- SvCUR_set(sv, (val) - SvPVX(sv)); } STMT_END
+ STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
+ SvCUR_set(sv, (val) - SvPVX(sv)); } STMT_END
+
+/*
+=for apidoc Am|void|SvPV_renew|SV* sv|STRLEN len
+Low level micro optimization of C<L</SvGROW>>. It is generally better to use
+C<SvGROW> instead. This is because C<SvPV_renew> ignores potential issues that
+C<SvGROW> handles. C<sv> needs to have a real C<PV> that is unencombered by
+things like COW. Using C<SV_CHECK_THINKFIRST> or
+C<SV_CHECK_THINKFIRST_COW_DROP> before calling this should clean it up, but
+why not just use C<SvGROW> if you're not sure about the provenance?
+=cut
+*/
#define SvPV_renew(sv,n) \
- STMT_START { SvLEN_set(sv, n); \
- SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \
- (char*)saferealloc((Malloc_t)SvPVX(sv), \
- (MEM_SIZE)((n))))); \
- } STMT_END
+ STMT_START { SvLEN_set(sv, n); \
+ SvPV_set((sv), (MEM_WRAP_CHECK_(n,char) \
+ (char*)saferealloc((Malloc_t)SvPVX(sv), \
+ (MEM_SIZE)((n))))); \
+ } STMT_END
+/*
+=for apidoc Am|void|SvPV_shrink_to_cur|SV* sv
+
+Trim any trailing unused memory in the PV of C<sv>, which needs to have a real
+C<PV> that is unencombered by things like COW. Think first before using this
+functionality. Is the space saving really worth giving up COW? Will the
+needed size of C<sv> stay the same?
+
+If the answers are both yes, then use L</C<SV_CHECK_THINKFIRST>> or
+L</C<SV_CHECK_THINKFIRST_COW_DROP>> before calling this.
+
+=cut
+*/
#define SvPV_shrink_to_cur(sv) STMT_START { \
- const STRLEN _lEnGtH = SvCUR(sv) + 1; \
- SvPV_renew(sv, _lEnGtH); \
- } STMT_END
+ const STRLEN _lEnGtH = SvCUR(sv) + 1; \
+ SvPV_renew(sv, _lEnGtH); \
+ } STMT_END
/*
=for apidoc Am|void|SvPV_free|SV * sv
*/
#define SvPV_free(sv) \
STMT_START { \
- assert(SvTYPE(sv) >= SVt_PV); \
- if (SvLEN(sv)) { \
- assert(!SvROK(sv)); \
- if(UNLIKELY(SvOOK(sv))) { \
- STRLEN zok; \
- SvOOK_offset(sv, zok); \
- SvPV_set(sv, SvPVX_mutable(sv) - zok); \
- SvFLAGS(sv) &= ~SVf_OOK; \
- } \
- Safefree(SvPVX(sv)); \
- } \
- } STMT_END
+ assert(SvTYPE(sv) >= SVt_PV); \
+ if (SvLEN(sv)) { \
+ assert(!SvROK(sv)); \
+ if(UNLIKELY(SvOOK(sv))) { \
+ STRLEN zok; \
+ SvOOK_offset(sv, zok); \
+ SvPV_set(sv, SvPVX_mutable(sv) - zok); \
+ SvFLAGS(sv) &= ~SVf_OOK; \
+ } \
+ Safefree(SvPVX(sv)); \
+ } \
+ } STMT_END
#ifdef PERL_CORE
/* Code that crops up in three places to take a scalar and ready it to hold
a reference */
# define prepare_SV_for_RV(sv) \
STMT_START { \
- if (SvTYPE(sv) < SVt_PV && SvTYPE(sv) != SVt_IV) \
- sv_upgrade(sv, SVt_IV); \
- else if (SvTYPE(sv) >= SVt_PV) { \
- SvPV_free(sv); \
- SvLEN_set(sv, 0); \
+ if (SvTYPE(sv) < SVt_PV && SvTYPE(sv) != SVt_IV) \
+ sv_upgrade(sv, SVt_IV); \
+ else if (SvTYPE(sv) >= SVt_PV) { \
+ SvPV_free(sv); \
+ SvLEN_set(sv, 0); \
SvCUR_set(sv, 0); \
- } \
- } STMT_END
+ } \
+ } STMT_END
#endif
#ifndef PERL_CORE
#if defined (DEBUGGING) && defined(PERL_USE_GCC_BRACE_GROUPS)
# define BmUSEFUL(sv) \
- (*({ SV *const _bmuseful = MUTABLE_SV(sv); \
- assert(SvTYPE(_bmuseful) >= SVt_PVIV); \
- assert(SvVALID(_bmuseful)); \
- assert(!SvIOK(_bmuseful)); \
- &(((XPVIV*) SvANY(_bmuseful))->xiv_u.xivu_iv); \
- }))
+ (*({ SV *const _bmuseful = MUTABLE_SV(sv); \
+ assert(SvTYPE(_bmuseful) >= SVt_PVIV); \
+ assert(SvVALID(_bmuseful)); \
+ assert(!SvIOK(_bmuseful)); \
+ &(((XPVIV*) SvANY(_bmuseful))->xiv_u.xivu_iv); \
+ }))
#else
# define BmUSEFUL(sv) ((XPVIV*) SvANY(sv))->xiv_u.xivu_iv
#define IoTYPE_NUMERIC '#' /* fdopen */
/*
+=for apidoc_section $tainting
=for apidoc Am|bool|SvTAINTED|SV* sv
Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
not.
} STMT_END
/*
-=for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
-=for apidoc_item ||SvPV_force_nolen|SV* sv
-=for apidoc_item ||SvPVx_force|SV* sv|STRLEN len
-=for apidoc_item ||SvPV_force_nomg|SV* sv|STRLEN len
-=for apidoc_item ||SvPV_force_nomg_nolen|SV * sv
-=for apidoc_item ||SvPV_force_mutable|SV * sv|STRLEN len
-=for apidoc_item ||SvPV_force_flags|SV * sv|STRLEN len|U32 flags
-=for apidoc_item ||SvPV_force_flags_nolen|SV * sv|U32 flags
-=for apidoc_item ||SvPV_force_flags_mutable|SV * sv|STRLEN len|U32 flags
-=for apidoc_item ||SvPVbyte_force
-=for apidoc_item ||SvPVbytex_force
-=for apidoc_item ||SvPVutf8_force
-=for apidoc_item ||SvPVutf8x_force
+=for apidoc_section $SV
+=for apidoc Am|char*|SvPV_force |SV* sv|STRLEN len
+=for apidoc_item ||SvPV_force_flags |SV * sv|STRLEN len|U32 flags
+=for apidoc_item ||SvPV_force_flags_mutable|SV * sv|STRLEN len|U32 flags
+=for apidoc_item ||SvPV_force_flags_nolen |SV * sv |U32 flags
+=for apidoc_item ||SvPV_force_mutable |SV * sv|STRLEN len
+=for apidoc_item ||SvPV_force_nolen |SV* sv
+=for apidoc_item ||SvPV_force_nomg |SV* sv|STRLEN len
+=for apidoc_item ||SvPV_force_nomg_nolen |SV * sv
+=for apidoc_item ||SvPVbyte_force |SV * sv|STRLEN len
+=for apidoc_item ||SvPVbytex_force |SV * sv|STRLEN len
+=for apidoc_item ||SvPVutf8_force |SV * sv|STRLEN len
+=for apidoc_item ||SvPVutf8x_force |SV * sv|STRLEN len
+=for apidoc_item ||SvPVx_force |SV* sv|STRLEN len
These are like C<L</SvPV>>, returning the string in the SV, but will force the
SV into containing a string (C<L</SvPOK>>), and only a string
C<SvPVbytex_force> is like C<SvPVbyte_force>, but guarantees to evaluate C<sv>
only once; use the more efficient C<SvPVbyte_force> otherwise.
-=for apidoc Am|char*|SvPV|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVx|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPV_nomg|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPV_nolen|SV* sv
-=for apidoc_item |char*|SvPVx_nolen|SV* sv
-=for apidoc_item |char*|SvPV_nomg_nolen|SV* sv
-=for apidoc_item |char*|SvPV_mutable|SV* sv|STRLEN len
-=for apidoc_item |const char*|SvPV_const|SV* sv|STRLEN len
-=for apidoc_item |const char*|SvPVx_const|SV* sv|STRLEN len
-=for apidoc_item |const char*|SvPV_nolen_const|SV* sv
-=for apidoc_item |const char*|SvPVx_nolen_const|SV* sv
-=for apidoc_item |const char*|SvPV_nomg_const|SV* sv|STRLEN len
+=for apidoc Am | char*|SvPV |SV* sv|STRLEN len
+=for apidoc_item |const char*|SvPV_const |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPV_flags |SV* sv|STRLEN len|U32 flags
+=for apidoc_item |const char*|SvPV_flags_const |SV* sv|STRLEN len|U32 flags
+=for apidoc_item | char*|SvPV_flags_mutable |SV* sv|STRLEN len|U32 flags
+=for apidoc_item | char*|SvPV_mutable |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPV_nolen |SV* sv
+=for apidoc_item |const char*|SvPV_nolen_const |SV* sv
+=for apidoc_item | char*|SvPV_nomg |SV* sv|STRLEN len
+=for apidoc_item |const char*|SvPV_nomg_const |SV* sv|STRLEN len
=for apidoc_item |const char*|SvPV_nomg_const_nolen|SV* sv
-=for apidoc_item |char *|SvPV_flags|SV * sv|STRLEN len|U32 flags
-=for apidoc_item |const char *|SvPV_flags_const|SV * sv|STRLEN len|U32 flags
-=for apidoc_item |char *|SvPV_flags_mutable|SV * sv|STRLEN len|U32 flags
-=for apidoc_item |char*|SvPVbyte|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVbyte_nomg|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVbyte_nolen|SV* sv
-=for apidoc_item |char*|SvPVbytex_nolen|SV* sv
-=for apidoc_item |char*|SvPVbytex|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVbyte_or_null|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVbyte_or_null_nomg|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVutf8|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVutf8x|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVutf8_nomg|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVutf8_nolen|SV* sv
-=for apidoc_item |char*|SvPVutf8_or_null|SV* sv|STRLEN len
-=for apidoc_item |char*|SvPVutf8_or_null_nomg|SV* sv|STRLEN len
-
-All these return a pointer to the string in C<sv>, or a stringified form of
+=for apidoc_item | char*|SvPV_nomg_nolen |SV* sv
+=for apidoc_item | char*|SvPVbyte |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVbyte_nolen |SV* sv
+=for apidoc_item | char*|SvPVbyte_nomg |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVbyte_or_null |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVbyte_or_null_nomg|SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVbytex |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVbytex_nolen |SV* sv
+=for apidoc_item | char*|SvPVutf8 |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVutf8_nolen |SV* sv
+=for apidoc_item | char*|SvPVutf8_nomg |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVutf8_or_null |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVutf8_or_null_nomg|SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVutf8x |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVx |SV* sv|STRLEN len
+=for apidoc_item |const char*|SvPVx_const |SV* sv|STRLEN len
+=for apidoc_item | char*|SvPVx_nolen |SV* sv
+=for apidoc_item |const char*|SvPVx_nolen_const |SV* sv
+
+These each return a pointer to the string in C<sv>, or a stringified form of
C<sv> if it does not contain a string. The SV may cache the stringified
version becoming C<SvPOK>.
The differences between the forms are:
+The forms with neither C<byte> nor C<utf8> in their names (e.g., C<SvPV> or
+C<SvPV_nolen>) can expose the SV's internal string buffer. If
+that buffer consists entirely of bytes 0-255 and includes any bytes above
+127, then you B<MUST> consult C<SvUTF8> to determine the actual code points
+the string is meant to contain. Generally speaking, it is probably safer to
+prefer C<SvPVbyte>, C<SvPVutf8>, and the like. See
+L<perlguts/How do I pass a Perl string to a C library?> for more details.
+
The forms with C<flags> in their names allow you to use the C<flags> parameter
to specify to process 'get' magic (by setting the C<SV_GMAGIC> flag) or to skip
'get' magic (by clearing it). The other forms process 'get' magic, except for
The other forms return a mutable pointer so that the string is modifiable by
the caller; this is emphasized for the ones with C<mutable> in their names.
-The forms whose name ends in C<x> are the same as the corresponding form
-without the C<x>, but the C<x> form is guaranteed to evaluate C<sv> exactly
-once, with a slight loss of efficiency. Use this if C<sv> is an expression
-with side effects.
+As of 5.38, all forms are guaranteed to evaluate C<sv> exactly once. For
+earlier Perls, use a form whose name ends with C<x> for single evaluation.
C<SvPVutf8> is like C<SvPV>, but converts C<sv> to UTF-8 first if not already
UTF-8. Similiarly, the other forms with C<utf8> in their names correspond to
C<SvPVbyte_or_null> doesn't have a corresponding non-C<byte> form. Instead it
is like C<SvPVbyte>, but when C<sv> is undef, it returns C<NULL>.
-=for apidoc Am|IV|SvIV|SV* sv
-=for apidoc_item SvIVx
-=for apidoc_item SvIV_nomg
-
-These coerce the given SV to IV and return it. The returned value in many
-circumstances will get stored in C<sv>'s IV slot, but not in all cases. (Use
-C<L</sv_setiv>> to make sure it does).
-
-C<SvIVx> is different from the others in that it is guaranteed to evaluate
-C<sv> exactly once; the others may evaluate it multiple times. Only use this
-form if C<sv> is an expression with side effects, otherwise use the more
-efficient C<SvIV>.
-
-C<SvIV_nomg> is the same as C<SvIV>, but does not perform 'get' magic.
-
-=for apidoc Am|NV|SvNV|SV* sv
-=for apidoc_item SvNVx
-=for apidoc_item SvNV_nomg
-
-These coerce the given SV to NV and return it. The returned value in many
-circumstances will get stored in C<sv>'s NV slot, but not in all cases. (Use
-C<L</sv_setnv>> to make sure it does).
-
-C<SvNVx> is different from the others in that it is guaranteed to evaluate
-C<sv> exactly once; the others may evaluate it multiple times. Only use this
-form if C<sv> is an expression with side effects, otherwise use the more
-efficient C<SvNV>.
-
-C<SvNV_nomg> is the same as C<SvNV>, but does not perform 'get' magic.
-
-=for apidoc Am|UV|SvUV|SV* sv
-=for apidoc_item SvUVx
-=for apidoc_item SvUV_nomg
-
-These coerce the given SV to UV and return it. The returned value in many
-circumstances will get stored in C<sv>'s UV slot, but not in all cases. (Use
-C<L</sv_setuv>> to make sure it does).
-
-C<SvUVx> is different from the others in that it is guaranteed to evaluate
-C<sv> exactly once; the others may evaluate it multiple times. Only use this
-form if C<sv> is an expression with side effects, otherwise use the more
-efficient C<SvUV>.
-
-C<SvUV_nomg> is the same as C<SvUV>, but does not perform 'get' magic.
-
-=for apidoc SvTRUE
-=for apidoc_item SvTRUEx
-=for apidoc_item SvTRUE_nomg
+=for apidoc SvTRUE
=for apidoc_item SvTRUE_NN
+=for apidoc_item SvTRUE_nomg
=for apidoc_item SvTRUE_nomg_NN
+=for apidoc_item SvTRUEx
These return a boolean indicating whether Perl would evaluate the SV as true or
false. See C<L</SvOK>> for a defined/undefined test.
non-null (NN). If there is a possibility that it is NULL, use plain
C<SvTRUE_nomg>.
-=for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
-Like C<SvPV_force>, but converts C<sv> to UTF-8 first if necessary.
-
-=for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
-Like C<SvPV>, but converts C<sv> to UTF-8 first if necessary.
-
-=for apidoc Am|char*|SvPVutf8_nomg|SV* sv|STRLEN len
-Like C<SvPVutf8>, but does not process get magic.
-
-=for apidoc Am|char*|SvPVutf8_or_null|SV* sv|STRLEN len
-Like C<SvPVutf8>, but when C<sv> is undef, returns C<NULL>.
-
-=for apidoc Am|char*|SvPVutf8_or_null_nomg|SV* sv|STRLEN len
-Like C<SvPVutf8_or_null>, but does not process get magic.
-
-=for apidoc Am|char*|SvPVutf8_nolen|SV* sv
-Like C<SvPV_nolen>, but converts C<sv> to UTF-8 first if necessary.
-
-=for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
-Like C<SvPV_force>, but converts C<sv> to byte representation first if
-necessary. If the SV cannot be downgraded from UTF-8, this croaks.
-
-=for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
-Like C<SvPV>, but converts C<sv> to byte representation first if necessary. If
-the SV cannot be downgraded from UTF-8, this croaks.
-
-=for apidoc Am|char*|SvPVbyte_nomg|SV* sv|STRLEN len
-Like C<SvPVbyte>, but does not process get magic.
-
-=for apidoc Am|char*|SvPVbyte_or_null|SV* sv|STRLEN len
-Like C<SvPVbyte>, but when C<sv> is undef, returns C<NULL>.
-
-=for apidoc Am|char*|SvPVbyte_or_null_nomg|SV* sv|STRLEN len
-Like C<SvPVbyte_or_null>, but does not process get magic.
-
-=for apidoc Am|char*|SvPVbyte_nolen|SV* sv
-Like C<SvPV_nolen>, but converts C<sv> to byte representation first if
-necessary. If the SV cannot be downgraded from UTF-8, this croaks.
-
=for apidoc Am|U32|SvIsCOW|SV* sv
Returns a U32 value indicating whether the SV is Copy-On-Write (either shared
hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
=cut
*/
-/* Let us hope that bitmaps for UV and IV are the same */
-#define SvIV(sv) (SvIOK_nog(sv) ? SvIVX(sv) : sv_2iv(sv))
-#define SvUV(sv) (SvUOK_nog(sv) ? SvUVX(sv) : sv_2uv(sv))
-#define SvNV(sv) (SvNOK_nog(sv) ? SvNVX(sv) : sv_2nv(sv))
-
-#define SvIV_nomg(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv_flags(sv, 0))
-#define SvUV_nomg(sv) (SvUOK(sv) ? SvUVX(sv) : sv_2uv_flags(sv, 0))
-#define SvNV_nomg(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv_flags(sv, 0))
-
-/* ----*/
-
-#define SvPV(sv, len) SvPV_flags(sv, len, SV_GMAGIC)
-#define SvPV_const(sv, len) SvPV_flags_const(sv, len, SV_GMAGIC)
-#define SvPV_mutable(sv, len) SvPV_flags_mutable(sv, len, SV_GMAGIC)
-
-#define SvPV_flags(sv, len, flags) \
- (SvPOK_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &len, flags))
-#define SvPV_flags_const(sv, len, flags) \
- (SvPOK_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX_const(sv)) : \
- (const char*) sv_2pv_flags(sv, &len, (flags|SV_CONST_RETURN)))
-#define SvPV_flags_const_nolen(sv, flags) \
- (SvPOK_nog(sv) \
- ? SvPVX_const(sv) : \
- (const char*) sv_2pv_flags(sv, 0, (flags|SV_CONST_RETURN)))
-#define SvPV_flags_mutable(sv, len, flags) \
- (SvPOK_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX_mutable(sv)) : \
- sv_2pv_flags(sv, &len, (flags|SV_MUTABLE_RETURN)))
-
-#define SvPV_force(sv, len) SvPV_force_flags(sv, len, SV_GMAGIC)
-#define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC)
-#define SvPV_force_mutable(sv, len) SvPV_force_flags_mutable(sv, len, SV_GMAGIC)
-
-#define SvPV_force_nomg(sv, len) SvPV_force_flags(sv, len, 0)
-#define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0)
-
-#define SvPV_force_flags(sv, len, flags) \
- (SvPOK_pure_nogthink(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &len, flags))
-
-#define SvPV_force_flags_nolen(sv, flags) \
- (SvPOK_pure_nogthink(sv) \
- ? SvPVX(sv) : sv_pvn_force_flags(sv, 0, flags))
-
-#define SvPV_force_flags_mutable(sv, len, flags) \
- (SvPOK_pure_nogthink(sv) \
- ? ((len = SvCUR(sv)), SvPVX_mutable(sv)) \
- : sv_pvn_force_flags(sv, &len, flags|SV_MUTABLE_RETURN))
+/* To pass the action to the functions called by the following macros */
+typedef enum {
+ SvPVutf8_type_,
+ SvPVbyte_type_,
+ SvPVnormal_type_,
+ SvPVforce_type_,
+ SvPVutf8_pure_type_,
+ SvPVbyte_pure_type_
+} PL_SvPVtype;
+
+START_EXTERN_C
+
+/* When this code was written, embed.fnc could not handle function pointer
+ * parameters; perhaps it still can't */
+#ifndef PERL_NO_INLINE_FUNCTIONS
+PERL_STATIC_INLINE char*
+Perl_SvPV_helper(pTHX_ SV *const sv, STRLEN *const lp, const U32 flags, const PL_SvPVtype type, char * (*non_trivial)(pTHX_ SV *, STRLEN * const, const U32), const bool or_null, const U32 return_flags);
+#endif
-#define SvPV_nolen(sv) \
- (SvPOK_nog(sv) \
- ? SvPVX(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC))
+END_EXTERN_C
+
+/* This test is "is there a cached PV that we can use directly?"
+ * We can if
+ * a) SVf_POK is true and there's definitely no get magic on the scalar
+ * b) SVp_POK is true, there's no get magic, and we know that the cached PV
+ * came from an IV conversion.
+ * For the latter case, we don't set SVf_POK so that we can distinguish whether
+ * the value originated as a string or as an integer, before we cached the
+ * second representation. */
+#define SvPOK_or_cached_IV(sv) \
+ (((SvFLAGS(sv) & (SVf_POK|SVs_GMG)) == SVf_POK) || ((SvFLAGS(sv) & (SVf_IOK|SVp_POK|SVs_GMG)) == (SVf_IOK|SVp_POK)))
+
+#define SvPV_flags(sv, len, flags) \
+ Perl_SvPV_helper(aTHX_ sv, &len, flags, SvPVnormal_type_, \
+ Perl_sv_2pv_flags, FALSE, 0)
+#define SvPV_flags_const(sv, len, flags) \
+ ((const char*) Perl_SvPV_helper(aTHX_ sv, &len, flags, SvPVnormal_type_, \
+ Perl_sv_2pv_flags, FALSE, \
+ SV_CONST_RETURN))
+#define SvPV_flags_const_nolen(sv, flags) \
+ ((const char*) Perl_SvPV_helper(aTHX_ sv, NULL, flags, SvPVnormal_type_, \
+ Perl_sv_2pv_flags, FALSE, \
+ SV_CONST_RETURN))
+#define SvPV_flags_mutable(sv, len, flags) \
+ Perl_SvPV_helper(aTHX_ sv, &len, flags, SvPVnormal_type_, \
+ Perl_sv_2pv_flags, FALSE, SV_MUTABLE_RETURN)
+
+#define SvPV_nolen(sv) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, SV_GMAGIC, SvPVnormal_type_, \
+ Perl_sv_2pv_flags, FALSE, 0)
+
+#define SvPV_nolen_const(sv) SvPV_flags_const_nolen(sv, SV_GMAGIC)
+
+#define SvPV(sv, len) SvPV_flags(sv, len, SV_GMAGIC)
+#define SvPV_const(sv, len) SvPV_flags_const(sv, len, SV_GMAGIC)
+#define SvPV_mutable(sv, len) SvPV_flags_mutable(sv, len, SV_GMAGIC)
+
+#define SvPV_nomg_nolen(sv) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, 0, SvPVnormal_type_,Perl_sv_2pv_flags, \
+ FALSE, 0)
+#define SvPV_nomg(sv, len) SvPV_flags(sv, len, 0)
+#define SvPV_nomg_const(sv, len) SvPV_flags_const(sv, len, 0)
+#define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0)
+
+#define SvPV_force_flags(sv, len, flags) \
+ Perl_SvPV_helper(aTHX_ sv, &len, flags, SvPVforce_type_, \
+ Perl_sv_pvn_force_flags, FALSE, 0)
+#define SvPV_force_flags_nolen(sv, flags) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, flags, SvPVforce_type_, \
+ Perl_sv_pvn_force_flags, FALSE, 0)
+#define SvPV_force_flags_mutable(sv, len, flags) \
+ Perl_SvPV_helper(aTHX_ sv, &len, flags, SvPVforce_type_, \
+ Perl_sv_pvn_force_flags, FALSE, SV_MUTABLE_RETURN)
+
+#define SvPV_force(sv, len) SvPV_force_flags(sv, len, SV_GMAGIC)
+#define SvPV_force_nolen(sv) SvPV_force_flags_nolen(sv, SV_GMAGIC)
+#define SvPV_force_mutable(sv, len) SvPV_force_flags_mutable(sv, len, SV_GMAGIC)
/* "_nomg" in these defines means no mg_get() */
-#define SvPV_nomg_nolen(sv) \
- (SvPOK_nog(sv) \
- ? SvPVX(sv) : sv_2pv_flags(sv, 0, 0))
-
-#define SvPV_nolen_const(sv) \
- (SvPOK_nog(sv) \
- ? SvPVX_const(sv) : sv_2pv_flags(sv, 0, SV_GMAGIC|SV_CONST_RETURN))
-
-#define SvPV_nomg(sv, len) SvPV_flags(sv, len, 0)
-#define SvPV_nomg_const(sv, len) SvPV_flags_const(sv, len, 0)
-#define SvPV_nomg_const_nolen(sv) SvPV_flags_const_nolen(sv, 0)
-
-/* ----*/
-
-#define SvPVutf8(sv, len) \
- (SvPOK_utf8_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &len))
-
-#define SvPVutf8_or_null(sv, len) \
- (SvPOK_utf8_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : (SvGETMAGIC(sv), SvOK(sv)) \
- ? sv_2pvutf8_flags(sv, &len, 0) : ((len = 0), NULL))
-
-#define SvPVutf8_nomg(sv, len) \
- (SvPOK_utf8_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8_flags(sv, &len, 0))
-
-#define SvPVutf8_or_null_nomg(sv, len) \
- (SvPOK_utf8_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : SvOK(sv) \
- ? sv_2pvutf8_flags(sv, &len, 0) : ((len = 0), NULL))
-
-#define SvPVutf8_force(sv, len) \
- (SvPOK_utf8_pure_nogthink(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &len))
-
-#define SvPVutf8_nolen(sv) \
- (SvPOK_utf8_nog(sv) \
- ? SvPVX(sv) : sv_2pvutf8(sv, 0))
-
-/* ----*/
-
-#define SvPVbyte(sv, len) \
- (SvPOK_byte_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &len))
-
-#define SvPVbyte_or_null(sv, len) \
- (SvPOK_byte_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : (SvGETMAGIC(sv), SvOK(sv)) \
- ? sv_2pvbyte_flags(sv, &len, 0) : ((len = 0), NULL))
-
-#define SvPVbyte_nomg(sv, len) \
- (SvPOK_byte_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte_flags(sv, &len, 0))
-
-#define SvPVbyte_or_null_nomg(sv, len) \
- (SvPOK_utf8_nog(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : SvOK(sv) \
- ? sv_2pvbyte_flags(sv, &len, 0) : ((len = 0), NULL))
-
-#define SvPVbyte_force(sv, len) \
- (SvPOK_byte_pure_nogthink(sv) \
- ? ((len = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &len))
-
-#define SvPVbyte_nolen(sv) \
- (SvPOK_byte_nog(sv) \
- ? SvPVX(sv) : sv_2pvbyte(sv, 0))
-
-
-/* define FOOx(): idempotent versions of FOO(). If possible, use a local
- * var to evaluate the arg once; failing that, use a global if possible;
- * failing that, call a function to do the work
- */
+#define SvPV_force_nomg(sv, len) SvPV_force_flags(sv, len, 0)
+#define SvPV_force_nomg_nolen(sv) SvPV_force_flags_nolen(sv, 0)
+
+#define SvPVutf8(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, SV_GMAGIC, SvPVutf8_type_, \
+ Perl_sv_2pvutf8_flags, FALSE, 0)
+#define SvPVutf8_nomg(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, 0, SvPVutf8_type_, \
+ Perl_sv_2pvutf8_flags, FALSE, 0)
+#define SvPVutf8_nolen(sv) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, SV_GMAGIC, SvPVutf8_type_, \
+ Perl_sv_2pvutf8_flags, FALSE, 0)
+#define SvPVutf8_or_null(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, SV_GMAGIC, SvPVutf8_type_, \
+ Perl_sv_2pvutf8_flags, TRUE, 0)
+#define SvPVutf8_or_null_nomg(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, 0, SvPVutf8_type_, \
+ Perl_sv_2pvutf8_flags, TRUE, 0)
+
+#define SvPVbyte(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, SV_GMAGIC, SvPVbyte_type_, \
+ Perl_sv_2pvbyte_flags, FALSE, 0)
+#define SvPVbyte_nomg(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, 0, SvPVbyte_type_, \
+ Perl_sv_2pvbyte_flags, FALSE, 0)
+#define SvPVbyte_nolen(sv) \
+ Perl_SvPV_helper(aTHX_ sv, NULL, SV_GMAGIC, SvPVbyte_type_, \
+ Perl_sv_2pvbyte_flags, FALSE, 0)
+#define SvPVbyte_or_null(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, SV_GMAGIC, SvPVbyte_type_, \
+ Perl_sv_2pvbyte_flags, TRUE, 0)
+#define SvPVbyte_or_null_nomg(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, 0, SvPVbyte_type_, \
+ Perl_sv_2pvbyte_flags, TRUE, 0)
+
+#define SvPVutf8_force(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, 0, SvPVutf8_pure_type_, \
+ Perl_sv_pvutf8n_force_wrapper, FALSE, 0)
+
+#define SvPVbyte_force(sv, len) \
+ Perl_SvPV_helper(aTHX_ sv, &len, 0, SvPVbyte_pure_type_, \
+ Perl_sv_pvbyten_force_wrapper, FALSE, 0)
+
+/* define FOOx(): Before FOO(x) was inlined, these were idempotent versions of
+ * FOO(). */
#define SvPVx_force(sv, len) sv_pvn_force(sv, &len)
#define SvPVutf8x_force(sv, len) sv_pvutf8n_force(sv, &len)
#define SvTRUEx_nomg(sv) SvTRUE_nomg(sv)
#define SvTRUE_nomg_NN(sv) SvTRUE_common(sv, TRUE)
+# define SvIVx(sv) SvIV(sv)
+# define SvUVx(sv) SvUV(sv)
+# define SvNVx(sv) SvNV(sv)
+
#if defined(PERL_USE_GCC_BRACE_GROUPS)
-# define SvIVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvIV(_sv); })
-# define SvUVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvUV(_sv); })
-# define SvNVx(sv) ({SV *_sv = MUTABLE_SV(sv); SvNV(_sv); })
# define SvPVx(sv, len) ({SV *_sv = (sv); SvPV(_sv, len); })
# define SvPVx_const(sv, len) ({SV *_sv = (sv); SvPV_const(_sv, len); })
# define SvPVx_nolen(sv) ({SV *_sv = (sv); SvPV_nolen(_sv); })
/* These inlined macros use globals, which will require a thread
* declaration in user code, so we avoid them under threads */
-# define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
-# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
-# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
# define SvPVx(sv, len) ((PL_Sv = (sv)), SvPV(PL_Sv, len))
# define SvPVx_const(sv, len) ((PL_Sv = (sv)), SvPV_const(PL_Sv, len))
# define SvPVx_nolen(sv) ((PL_Sv = (sv)), SvPV_nolen(PL_Sv))
# define SvPVbytex_nolen(sv) ((PL_Sv = (sv)), SvPVbyte_nolen(PL_Sv))
#endif /* __GNU__ */
-#define SvPVXtrue(sv) ( \
- ((XPV*)SvANY((sv))) \
- && ( \
- ((XPV*)SvANY((sv)))->xpv_cur > 1 \
- || ( \
- ((XPV*)SvANY((sv)))->xpv_cur \
- && *(sv)->sv_u.svu_pv != '0' \
- ) \
- ) \
-)
-
-#define SvIsCOW(sv) (SvFLAGS(sv) & SVf_IsCOW)
-#define SvIsCOW_on(sv) (SvFLAGS(sv) |= SVf_IsCOW)
-#define SvIsCOW_off(sv) (SvFLAGS(sv) &= ~SVf_IsCOW)
-#define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
+#define SvIsCOW(sv) (SvFLAGS(sv) & SVf_IsCOW)
+#define SvIsCOW_on(sv) (SvFLAGS(sv) |= SVf_IsCOW)
+#define SvIsCOW_off(sv) (SvFLAGS(sv) &= ~(SVf_IsCOW|SVppv_STATIC))
+#define SvIsCOW_shared_hash(sv) ((SvFLAGS(sv) & (SVf_IsCOW|SVppv_STATIC)) == (SVf_IsCOW) && SvLEN(sv) == 0)
+#define SvIsCOW_static(sv) ((SvFLAGS(sv) & (SVf_IsCOW|SVppv_STATIC)) == (SVf_IsCOW|SVppv_STATIC))
#define SvSHARED_HEK_FROM_PV(pvx) \
- ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key)))
+ ((struct hek*)(pvx - STRUCT_OFFSET(struct hek, hek_key)))
/*
=for apidoc Am|struct hek*|SvSHARED_HASH|SV * sv
Returns the hash for C<sv> created by C<L</newSVpvn_share>>.
#define sv_usepvn(sv, p, l) sv_usepvn_flags(sv, p, l, 0)
#define sv_usepvn_mg(sv, p, l) sv_usepvn_flags(sv, p, l, SV_SMAGIC)
-/* 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
- the value is about to get thrown away, so drop the PV rather than go to
- the effort of making a read-write copy only for it to get immediately
- discarded. */
+/*
+=for apidoc Am|void|SV_CHECK_THINKFIRST_COW_DROP|SV * sv
+
+Call this when you are about to replace the PV value in C<sv>, which is
+potentially copy-on-write. It stops any sharing with other SVs, so that no
+Copy on Write (COW) actually happens. This COW would be useless, as it would
+immediately get changed to something else. This function also removes any
+other encumbrances that would be problematic when changing C<sv>.
+
+=cut
+*/
#define SV_CHECK_THINKFIRST_COW_DROP(sv) if (SvTHINKFIRST(sv)) \
- sv_force_normal_flags(sv, SV_COW_DROP_PV)
+ sv_force_normal_flags(sv, SV_COW_DROP_PV)
#ifdef PERL_COPY_ON_WRITE
# define SvCANCOW(sv) \
- (SvIsCOW(sv) \
- ? SvLEN(sv) ? CowREFCNT(sv) != SV_COW_REFCNT_MAX : 1 \
- : (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS \
- && SvCUR(sv)+1 < SvLEN(sv))
+ (SvIsCOW(sv) \
+ ? SvLEN(sv) ? CowREFCNT(sv) != SV_COW_REFCNT_MAX : 1 \
+ : (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS \
+ && SvCUR(sv)+1 < SvLEN(sv))
/* Note: To allow 256 COW "copies", a refcnt of 0 means 1. */
# define CowREFCNT(sv) (*(U8 *)(SvPVX(sv)+SvLEN(sv)-1))
# define SV_COW_REFCNT_MAX nBIT_UMAX(sizeof(U8) * CHARBITS)
# define CAN_COW_MASK (SVf_POK|SVf_ROK|SVp_POK|SVf_FAKE| \
- SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_PROTECT)
+ SVf_OOK|SVf_BREAK|SVf_READONLY|SVf_PROTECT)
#endif
#define CAN_COW_FLAGS (SVp_POK|SVf_POK)
+/*
+=for apidoc Am|void|SV_CHECK_THINKFIRST|SV * sv
+
+Remove any encumbrances from C<sv>, that need to be taken care of before it
+is modifiable. For example if it is Copy on Write (COW), now is the time to
+make that copy.
+
+If you know that you are about to change the PV value of C<sv>, instead use
+L</C<SV_CHECK_THINKFIRST_COW_DROP>> to avoid the write that would be
+immediately written again.
+
+=cut
+*/
#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) \
- sv_force_normal_flags(sv, 0)
+ sv_force_normal_flags(sv, 0)
/* all these 'functions' are now just macros */
#define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
#define sv_catpv_nomg(dsv, sstr) sv_catpv_flags(dsv, sstr, 0)
#define sv_setsv(dsv, ssv) \
- sv_setsv_flags(dsv, ssv, SV_GMAGIC|SV_DO_COW_SVSETSV)
+ sv_setsv_flags(dsv, ssv, SV_GMAGIC|SV_DO_COW_SVSETSV)
#define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_DO_COW_SVSETSV)
#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_eq(sv1, sv2) sv_eq_flags(sv1, sv2, SV_GMAGIC)
#define sv_cmp(sv1, sv2) sv_cmp_flags(sv1, sv2, SV_GMAGIC)
#define sv_cmp_locale(sv1, sv2) sv_cmp_locale_flags(sv1, sv2, SV_GMAGIC)
+#define sv_numeq(sv1, sv2) sv_numeq_flags(sv1, sv2, SV_GMAGIC)
+#define sv_streq(sv1, sv2) sv_streq_flags(sv1, sv2, SV_GMAGIC)
#define sv_collxfrm(sv, nxp) sv_collxfrm_flags(sv, nxp, SV_GMAGIC)
#define sv_2bool(sv) sv_2bool_flags(sv, SV_GMAGIC)
#define sv_2bool_nomg(sv) sv_2bool_flags(sv, 0)
#define sv_insert(bigstr, offset, len, little, littlelen) \
- Perl_sv_insert_flags(aTHX_ (bigstr),(offset), (len), (little), \
- (littlelen), SV_GMAGIC)
+ Perl_sv_insert_flags(aTHX_ (bigstr),(offset), (len), (little), \
+ (littlelen), SV_GMAGIC)
#define sv_mortalcopy(sv) \
- Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV)
+ Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV)
#define sv_cathek(sv,hek) \
- STMT_START { \
- HEK * const bmxk = hek; \
- sv_catpvn_flags(sv, HEK_KEY(bmxk), HEK_LEN(bmxk), \
- HEK_UTF8(bmxk) ? SV_CATUTF8 : SV_CATBYTES); \
- } STMT_END
+ STMT_START { \
+ HEK * const bmxk = hek; \
+ sv_catpvn_flags(sv, HEK_KEY(bmxk), HEK_LEN(bmxk), \
+ HEK_UTF8(bmxk) ? SV_CATUTF8 : SV_CATBYTES); \
+ } STMT_END
/* Should be named SvCatPVN_utf8_upgrade? */
#define sv_catpvn_nomg_utf8_upgrade(dsv, sstr, slen, nsv) \
- STMT_START { \
- if (!(nsv)) \
- nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \
- else \
- sv_setpvn(nsv, sstr, slen); \
- SvUTF8_off(nsv); \
- sv_utf8_upgrade(nsv); \
- sv_catsv_nomg(dsv, nsv); \
- } STMT_END
-#define sv_catpvn_nomg_maybeutf8(dsv, sstr, slen, is_utf8) \
- sv_catpvn_flags(dsv, sstr, slen, (is_utf8)?SV_CATUTF8:SV_CATBYTES)
+ STMT_START { \
+ if (!(nsv)) \
+ nsv = newSVpvn_flags(sstr, slen, SVs_TEMP); \
+ else \
+ sv_setpvn(nsv, sstr, slen); \
+ SvUTF8_off(nsv); \
+ sv_utf8_upgrade(nsv); \
+ sv_catsv_nomg(dsv, nsv); \
+ } STMT_END
+#define sv_catpvn_nomg_maybeutf8(dsv, sstr, len, is_utf8) \
+ sv_catpvn_flags(dsv, sstr, len, (is_utf8)?SV_CATUTF8:SV_CATBYTES)
#if defined(PERL_CORE) || defined(PERL_EXT)
# define sv_or_pv_len_utf8(sv, pv, bytelen) \
(SvGAMAGIC(sv) \
- ? utf8_length((U8 *)(pv), (U8 *)(pv)+(bytelen)) \
- : sv_len_utf8(sv))
+ ? utf8_length((U8 *)(pv), (U8 *)(pv)+(bytelen)) \
+ : sv_len_utf8(sv))
#endif
/*
-=for apidoc Am|SV*|newRV_inc|SV* sv
+=for apidoc newRV
+=for apidoc_item ||newRV_inc|
-Creates an RV wrapper for an SV. The reference count for the original SV is
-incremented.
+These are identical. They create an RV wrapper for an SV. The reference count
+for the original SV is incremented.
=cut
*/
/*
=for apidoc_section $SV
-=for apidoc Am|void|SvGETMAGIC|SV* sv
-Invokes C<L</mg_get>> on an SV if it has 'get' magic. For example, this
-will call C<FETCH> on a tied variable. This macro evaluates its
-argument more than once.
-
=for apidoc Am|void|SvSETMAGIC|SV* sv
Invokes C<L</mg_set>> on an SV if it has 'set' magic. This is necessary
after modifying a scalar, in case it is a magical variable like C<$|>
or a tied variable (it calls C<STORE>). This macro evaluates its
argument more than once.
-=for apidoc Am|void|SvSetSV|SV* dsv|SV* ssv
-=for apidoc_item SvSetMagicSV
-=for apidoc_item SvSetSV_nosteal
-=for apidoc_item SvSetMagicSV_nosteal
+=for apidoc Am|void|SvSetMagicSV|SV* dsv|SV* ssv
+=for apidoc_item SvSetMagicSV_nosteal
+=for apidoc_item SvSetSV
+=for apidoc_item SvSetSV_nosteal
if C<dsv> is the same as C<ssv>, these do nothing. Otherwise they all call
some form of C<L</sv_setsv>>. They may evaluate their arguments more than
#define SvUNLOCK(sv) PL_unlockhook(aTHX_ sv)
#define SvDESTROYABLE(sv) PL_destroyhook(aTHX_ sv)
-#define SvGETMAGIC(x) ((void)(UNLIKELY(SvGMAGICAL(x)) && mg_get(x)))
#define SvSETMAGIC(x) STMT_START { if (UNLIKELY(SvSMAGICAL(x))) mg_set(x); } STMT_END
#define SvSetSV_and(dst,src,finally) \
- STMT_START { \
- if (LIKELY((dst) != (src))) { \
- sv_setsv(dst, src); \
- finally; \
- } \
- } STMT_END
+ STMT_START { \
+ SV * src_ = src; \
+ SV * dst_ = dst; \
+ if (LIKELY((dst_) != (src_))) { \
+ sv_setsv(dst_, src_); \
+ finally; \
+ } \
+ } STMT_END
+
#define SvSetSV_nosteal_and(dst,src,finally) \
- STMT_START { \
- if (LIKELY((dst) != (src))) { \
- sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL | SV_DO_COW_SVSETSV); \
- finally; \
- } \
- } STMT_END
+ STMT_START { \
+ SV * src_ = src; \
+ SV * dst_ = dst; \
+ if (LIKELY((dst_) != (src_))) { \
+ sv_setsv_flags(dst_, src_, \
+ SV_GMAGIC \
+ | SV_NOSTEAL \
+ | SV_DO_COW_SVSETSV); \
+ finally; \
+ } \
+ } STMT_END
#define SvSetSV(dst,src) \
- SvSetSV_and(dst,src,/*nothing*/;)
+ SvSetSV_and(dst,src,/*nothing*/;)
#define SvSetSV_nosteal(dst,src) \
- SvSetSV_nosteal_and(dst,src,/*nothing*/;)
+ SvSetSV_nosteal_and(dst,src,/*nothing*/;)
#define SvSetMagicSV(dst,src) \
- SvSetSV_and(dst,src,SvSETMAGIC(dst))
+ SvSetSV_and(dst,src,SvSETMAGIC(dst))
#define SvSetMagicSV_nosteal(dst,src) \
- SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
+ SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
#if !defined(SKIP_DEBUGGING)
#define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
+/*
+=for apidoc Am|void|sv_setbool|SV *sv|bool b
+=for apidoc_item |void|sv_setbool_mg|SV *sv|bool b
+
+These set an SV to a true or false boolean value, upgrading first if necessary.
+
+They differ only in that C<sv_setbool_mg> handles 'set' magic; C<sv_setbool>
+does not.
+
+=cut
+*/
+
+#define sv_setbool(sv, b) sv_setsv(sv, boolSV(b))
+#define sv_setbool_mg(sv, b) sv_setsv_mg(sv, boolSV(b))
+
#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
/* If I give every macro argument a different name, then there won't be bugs
where nested macros get confused. Been there, done that. */
=cut
*/
#define isGV_with_GP(pwadak) \
- (((SvFLAGS(pwadak) & (SVp_POK|SVpgv_GP)) == SVpgv_GP) \
- && (SvTYPE(pwadak) == SVt_PVGV || SvTYPE(pwadak) == SVt_PVLV))
-#define isGV_with_GP_on(sv) STMT_START { \
- assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \
- assert (!SvPOKp(sv)); \
- assert (!SvIOKp(sv)); \
- (SvFLAGS(sv) |= SVpgv_GP); \
+ (((SvFLAGS(pwadak) & (SVp_POK|SVpgv_GP)) == SVpgv_GP) \
+ && (SvTYPE(pwadak) == SVt_PVGV || SvTYPE(pwadak) == SVt_PVLV))
+
+#define isGV_with_GP_on(sv) \
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert (SvTYPE(sv_) == SVt_PVGV || SvTYPE(sv_) == SVt_PVLV); \
+ assert (!SvPOKp(sv_)); \
+ assert (!SvIOKp(sv_)); \
+ (SvFLAGS(sv_) |= SVpgv_GP); \
} STMT_END
-#define isGV_with_GP_off(sv) STMT_START { \
- assert (SvTYPE(sv) == SVt_PVGV || SvTYPE(sv) == SVt_PVLV); \
- assert (!SvPOKp(sv)); \
- assert (!SvIOKp(sv)); \
- (SvFLAGS(sv) &= ~SVpgv_GP); \
+
+#define isGV_with_GP_off(sv) \
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ assert (SvTYPE(sv_) == SVt_PVGV || SvTYPE(sv_) == SVt_PVLV); \
+ assert (!SvPOKp(sv_)); \
+ assert (!SvIOKp(sv_)); \
+ (SvFLAGS(sv_) &= ~SVpgv_GP); \
} STMT_END
+
#ifdef PERL_CORE
# define isGV_or_RVCV(kadawp) \
(isGV(kadawp) || (SvROK(kadawp) && SvTYPE(SvRV(kadawp)) == SVt_PVCV))
#define isREGEXP(sv) \
(SvTYPE(sv) == SVt_REGEXP \
|| (SvFLAGS(sv) & (SVTYPEMASK|SVpgv_GP|SVf_FAKE)) \
- == (SVt_PVLV|SVf_FAKE))
+ == (SVt_PVLV|SVf_FAKE))
#ifdef PERL_ANY_COW
# define SvGROW(sv,len) \
- (SvIsCOW(sv) || SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
+ (SvIsCOW(sv) || SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
#else
# define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
#endif
10:28 <+meta> Nicholas: crash
*/
# define SvOOK_offset(sv, offset) STMT_START { \
- STATIC_ASSERT_STMT(sizeof(offset) == sizeof(STRLEN)); \
- if (SvOOK(sv)) { \
- const U8 *_crash = (U8*)SvPVX_const(sv); \
- (offset) = *--_crash; \
- if (!(offset)) { \
- _crash -= sizeof(STRLEN); \
- Copy(_crash, (U8 *)&(offset), sizeof(STRLEN), U8); \
- } \
- { \
- /* Validate the preceding buffer's sentinels to \
- verify that no-one is using it. */ \
- const U8 *const _bonk = (U8*)SvPVX_const(sv) - (offset);\
- while (_crash > _bonk) { \
- --_crash; \
- assert (*_crash == (U8)PTR2UV(_crash)); \
- } \
- } \
- } else { \
- (offset) = 0; \
- } \
+ STATIC_ASSERT_STMT(sizeof(offset) == sizeof(STRLEN)); \
+ if (SvOOK(sv)) { \
+ const U8 *_crash = (U8*)SvPVX_const(sv); \
+ (offset) = *--_crash; \
+ if (!(offset)) { \
+ _crash -= sizeof(STRLEN); \
+ Copy(_crash, (U8 *)&(offset), sizeof(STRLEN), U8); \
+ } \
+ { \
+ /* Validate the preceding buffer's sentinels to \
+ verify that no-one is using it. */ \
+ const U8 *const _bonk = (U8*)SvPVX_const(sv) - (offset);\
+ while (_crash > _bonk) { \
+ --_crash; \
+ assert (*_crash == (U8)PTR2UV(_crash)); \
+ } \
+ } \
+ } else { \
+ (offset) = 0; \
+ } \
} STMT_END
#else
/* This is the same code, but avoids using any temporary variables: */
# define SvOOK_offset(sv, offset) STMT_START { \
- STATIC_ASSERT_STMT(sizeof(offset) == sizeof(STRLEN)); \
- if (SvOOK(sv)) { \
- (offset) = ((U8*)SvPVX_const(sv))[-1]; \
- if (!(offset)) { \
- Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \
- (U8*)&(offset), sizeof(STRLEN), U8); \
- } \
- } else { \
- (offset) = 0; \
- } \
+ STATIC_ASSERT_STMT(sizeof(offset) == sizeof(STRLEN)); \
+ if (SvOOK(sv)) { \
+ (offset) = ((U8*)SvPVX_const(sv))[-1]; \
+ if (!(offset)) { \
+ Copy(SvPVX_const(sv) - 1 - sizeof(STRLEN), \
+ (U8*)&(offset), sizeof(STRLEN), U8); \
+ } \
+ } else { \
+ (offset) = 0; \
+ } \
} STMT_END
#endif
+/*
+=for apidoc_section $io
+=for apidoc newIO
+
+Create a new IO, setting the reference count to 1.
+
+=cut
+*/
#define newIO() MUTABLE_IO(newSV_type(SVt_PVIO))
#if defined(PERL_CORE) || defined(PERL_EXT)
# define SV_CONST(name) \
- PL_sv_consts[SV_CONST_##name] \
- ? PL_sv_consts[SV_CONST_##name] \
- : (PL_sv_consts[SV_CONST_##name] = newSVpv_share(#name, 0))
+ PL_sv_consts[SV_CONST_##name] \
+ ? PL_sv_consts[SV_CONST_##name] \
+ : (PL_sv_consts[SV_CONST_##name] = newSVpv_share(#name, 0))
# define SV_CONST_TIESCALAR 0
# define SV_CONST_TIEARRAY 1
/* The following two macros compute the necessary offsets for the above
* trick and store them in SvANY for SvIV() (and friends) to use. */
-#ifdef PERL_CORE
# define SET_SVANY_FOR_BODYLESS_IV(sv) \
- SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) \
- - STRUCT_OFFSET(XPVIV, xiv_iv))
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ SvANY(sv_) = (XPVIV*)((char*)&(sv_->sv_u.svu_iv) \
+ - STRUCT_OFFSET(XPVIV, xiv_iv)); \
+ } STMT_END
# define SET_SVANY_FOR_BODYLESS_NV(sv) \
- SvANY(sv) = (XPVNV*)((char*)&(sv->sv_u.svu_nv) \
- - STRUCT_OFFSET(XPVNV, xnv_u.xnv_nv))
-#endif
+ STMT_START { \
+ SV * sv_ = MUTABLE_SV(sv); \
+ SvANY(sv_) = (XPVNV*)((char*)&(sv_->sv_u.svu_nv) \
+ - STRUCT_OFFSET(XPVNV, xnv_u.xnv_nv)); \
+ } STMT_END
/*
* ex: set ts=8 sts=4 sw=4 et:
https://perl5.git.perl.org / perl5.git / blobdiff