X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=sv.h;h=f63d0580a62c444bce06195f3c1eaa2c88d7f34a;hb=1bb0a50fd869bf3d7f152d29ec8c8119703266a1;hp=219174f00ff8a3dba0f67f5b43d2b19d6f5159ad;hpb=4c79ee7a1e7564ef83d0ac25d6677fdebb3ec7aa;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/sv.h b/sv.h
index 219174f..f63d058 100644
--- a/sv.h
+++ b/sv.h
@@ -1,6 +1,7 @@
 /*    sv.h
  *
- *    Copyright (c) 1991-2003, 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.
@@ -273,7 +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 {
@@ -306,7 +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;
 
@@ -527,17 +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))
@@ -549,7 +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)
@@ -600,14 +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))
@@ -920,6 +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
 */