[perl #22127] get(av|cv|hv|sv) added to Devel::PPPort

[perl5.git] / sv.h

diff --git a/sv.h b/sv.h
index 3ba04fe..f63d058 100644 (file)
--- a/sv.h
+++ b/sv.h
@@ -1,6 +1,7 @@
 /*    sv.h
  *
- *    Copyright (c) 1991-2002, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2002, 2003, 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.
@@ -138,7 +139,22 @@ perform the upgrade if necessary.  See C<svtype>.
        ((PL_Sv=(SV*)(sv)), (PL_Sv && ++(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
 #endif
 
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
+#  define SvREFCNT_dec(sv)             \
+    ({                                 \
+       SV *nsv = (SV*)(sv);            \
+       if (nsv) {                      \
+           if (SvREFCNT(nsv)) {        \
+               if (--(SvREFCNT(nsv)) == 0) \
+                   Perl_sv_free2(aTHX_ nsv);   \
+           } else {                    \
+               sv_free(nsv);           \
+           }                           \
+       }                               \
+    })
+#else
 #define SvREFCNT_dec(sv)       sv_free((SV*)(sv))
+#endif
 
 #define SVTYPEMASK     0xff
 #define SvTYPE(sv)     ((sv)->sv_flags & SVTYPEMASK)
@@ -258,7 +274,8 @@ struct xpvlv {
     STRLEN     xlv_targoff;
     STRLEN     xlv_targlen;
     SV*                xlv_targ;
-    char       xlv_type;
+    char       xlv_type;       /* k=keys .=pos x=substr v=vec /=join/re
+                                * y=alem/helem/iter t=tie T=tied HE */
 };
 
 struct xpvgv {
@@ -291,7 +308,7 @@ struct xpvbm {
     U8         xbm_rare;       /* rarest character in string */
 };
 
-/* This structure much match XPVCV in cv.h */
+/* This structure must match XPVCV in cv.h */
 
 typedef U16 cv_flags_t;
 
@@ -512,17 +529,17 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
                                                  SVp_IOK|SVp_NOK|SVf_IVisUV))
 
 #ifdef __GNUC__
-#define assert_not_ROK(sv)     ({assert(!SvROK(sv) || !SvRV(sv))})
+#define assert_not_ROK(sv)     ({assert(!SvROK(sv) || !SvRV(sv))}),
 #else
-#define assert_not_ROK(sv)     0
+#define assert_not_ROK(sv)     
 #endif
 
 #define SvOK(sv)               (SvFLAGS(sv) & SVf_OK)
-#define SvOK_off(sv)           (assert_not_ROK(sv),                    \
+#define SvOK_off(sv)           (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV|SVf_UTF8), \
                                                        SvOOK_off(sv))
-#define SvOK_off_exc_UV(sv)    (assert_not_ROK(sv),                    \
+#define SvOK_off_exc_UV(sv)    (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_UTF8),            \
                                                        SvOOK_off(sv))
@@ -534,7 +551,7 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 #define SvNOKp(sv)             (SvFLAGS(sv) & SVp_NOK)
 #define SvNOKp_on(sv)          (SvFLAGS(sv) |= SVp_NOK)
 #define SvPOKp(sv)             (SvFLAGS(sv) & SVp_POK)
-#define SvPOKp_on(sv)          (assert_not_ROK(sv),                    \
+#define SvPOKp_on(sv)          (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) |= SVp_POK)
 
 #define SvIOK(sv)              (SvFLAGS(sv) & SVf_IOK)
@@ -585,14 +602,14 @@ and leaves the UTF8 status as it was.
 #define SvUTF8_off(sv)         (SvFLAGS(sv) &= ~(SVf_UTF8))
 
 #define SvPOK(sv)              (SvFLAGS(sv) & SVf_POK)
-#define SvPOK_on(sv)           (assert_not_ROK(sv),                    \
+#define SvPOK_on(sv)           (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
 #define SvPOK_off(sv)          (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
-#define SvPOK_only(sv)         (assert_not_ROK(sv),                    \
+#define SvPOK_only(sv)         (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV|SVf_UTF8), \
                                    SvFLAGS(sv) |= (SVf_POK|SVp_POK))
-#define SvPOK_only_UTF8(sv)    (assert_not_ROK(sv),                    \
+#define SvPOK_only_UTF8(sv)    (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV),          \
                                    SvFLAGS(sv) |= (SVf_POK|SVp_POK))
@@ -905,6 +922,14 @@ Like C<SvPV>, but converts sv to byte representation first if necessary.
 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
 otherwise.
 
+=for apidoc Am|bool|SvIsCOW|SV* sv
+Returns a boolean 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
+COW)
+
+=for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
+Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
+scalar.
 
 =cut
 */
@@ -1054,6 +1079,12 @@ otherwise.
 #  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))
+
+#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)   ((void)SvOOK_off(sv))
 #endif /* PERL_COPY_ON_WRITE */
@@ -1081,6 +1112,17 @@ otherwise.
 #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)
 
+/* Should be named SvCatPVN_utf8_upgrade? */
+#define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv)   \
+       STMT_START {                                    \
+           if (!(nsv))                                 \
+               nsv = sv_2mortal(newSVpvn(sstr, slen)); \
+           else                                        \
+               sv_setpvn(nsv, sstr, slen);             \
+           SvUTF8_off(nsv);                            \
+           sv_utf8_upgrade(nsv);                       \
+           sv_catsv(dsv, nsv); \
+       } STMT_END
 
 /*
 =for apidoc Am|SV*|newRV_inc|SV* sv
@@ -1178,6 +1220,7 @@ Returns a pointer to the character buffer.
 #define SvSetMagicSV_nosteal(dst,src) \
                SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
 
+
 #if !defined(SKIP_DEBUGGING)
 #define SvPEEK(sv) sv_peek(sv)
 #else