X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=handy.h;h=fe29019b438fd968b17df8aded7a5289831f2cf8;hb=c72de6e4fcf1475a6744c18dcaf8c2e06e1665bf;hp=c792665df93b2da6a6d3105ed31aa5924cf50d10;hpb=b8d68ded2ba9139a0c1050157b6f240617f5dd65;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/handy.h b/handy.h
index c792665..fe29019 100644
--- a/handy.h
+++ b/handy.h
@@ -1,6 +1,6 @@
 /*    handy.h
  *
- *    Copyright (c) 1991-2001, Larry Wall
+ *    Copyright (c) 1991-2002, Larry Wall
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -21,9 +21,10 @@
 #define Null(type) ((type)NULL)
 
 /*
-=for apidoc AmU||Nullch
-Null character pointer.
+=head1 Handy Values
 
+=for apidoc AmU||Nullch 
+Null character pointer.
 =for apidoc AmU||Nullsv
 Null SV pointer.
 
@@ -173,7 +174,11 @@ typedef U64TYPE U64;
 
 #define I32_MAX INT32_MAX
 #define I32_MIN INT32_MIN
-#define U32_MAX UINT32_MAX
+#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
+#  define U32_MAX UINT32_MAX
+#else
+#  define U32_MAX 4294967295U
+#endif
 #define U32_MIN UINT32_MIN
 
 #else
@@ -210,6 +215,8 @@ typedef U64TYPE U64;
 #define Ctl(ch) ((ch) & 037)
 
 /*
+=head1 Miscellaneous Functions
+
 =for apidoc Am|bool|strNE|char* s1|char* s2
 Test two strings to see if they are different.  Returns true or
 false.
@@ -283,6 +290,9 @@ C<strncmp>).
 #endif
 
 /*
+
+=head1 Character classes
+
 =for apidoc Am|bool|isALNUM|char ch
 Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric
 character (including underscore) or digit.
@@ -450,7 +460,10 @@ Converts the specified character to lowercase.
 #define isBLANK_LC_uni(c)	isBLANK(c) /* could be wrong */
 
 #define isALNUM_utf8(p)		is_utf8_alnum(p)
-#define isIDFIRST_utf8(p)	is_utf8_idfirst(p)
+/* The ID_Start of Unicode is quite limiting: it assumes a L-class
+ * character (meaning that you cannot have, say, a CJK character).
+ * Instead, let's allow ID_Continue but not digits. */
+#define isIDFIRST_utf8(p)	(is_utf8_idcont(p) && !is_utf8_digit(p))
 #define isALPHA_utf8(p)		is_utf8_alpha(p)
 #define isSPACE_utf8(p)		is_utf8_space(p)
 #define isDIGIT_utf8(p)		is_utf8_digit(p)
@@ -515,6 +528,8 @@ typedef U16 line_t;
 */
 
 /*
+=head1 SV Manipulation Functions
+
 =for apidoc Am|SV*|NEWSV|int id|STRLEN len
 Creates a new SV.  A non-zero C<len> parameter indicates the number of
 bytes of preallocated string space the SV should have.  An extra byte for a
@@ -522,6 +537,8 @@ tailing NUL is also reserved.  (SvPOK is not set for the SV even if string
 space is allocated.)  The reference count for the new SV is set to 1.
 C<id> is an integer id between 0 and 1299 (used to identify leaks).
 
+=head1 Memory Management
+
 =for apidoc Am|void|New|int id|void* ptr|int nitems|type
 The XSUB-writer's interface to the C C<malloc> function.
 
@@ -561,8 +578,12 @@ destination, C<nitems> is the number of items, and C<type> is the type.
 =for apidoc Am|void|StructCopy|type src|type dest|type
 This is an architecture-independent macro to copy one structure to another.
 
-=cut
-*/
+=for apidoc Am|void|Poison|void* dest|int nitems|type
+
+Fill up memory with a pattern (byte 0xAB over and over again) that
+hopefully catches attempts to access uninitialized memory.
+
+=cut */
 
 #ifndef lint
 
@@ -606,6 +627,8 @@ extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
 #define Copy(s,d,n,t)	(void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
 #define Zero(d,n,t)	(void)memzero((char*)(d), (n) * sizeof(t))
 
+#define Poison(d,n,t)	(void)memset((char*)(d), 0xAB, (n) * sizeof(t))
+
 #else /* lint */
 
 #define New(x,v,n,s)	(v = Null(s *))
@@ -615,6 +638,7 @@ extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
 #define Move(s,d,n,t)
 #define Copy(s,d,n,t)
 #define Zero(d,n,t)
+#define Poison(d,n,t)
 #define Safefree(d)	(d) = (d)
 
 #endif /* lint */