/* 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.
#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.
#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
#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.
#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.
#define toUPPER_uni(c,s,l) to_uni_upper(c,s,l)
#define toTITLE_uni(c,s,l) to_uni_title(c,s,l)
#define toLOWER_uni(c,s,l) to_uni_lower(c,s,l)
+#define toFOLD_uni(c,s,l) to_uni_fold(c,s,l)
#define isPSXSPC_uni(c) (isSPACE_uni(c) ||(c) == '\f')
#define isBLANK_uni(c) isBLANK(c) /* could be wrong */
#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)
*/
/*
+=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
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.
=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
#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 *))
#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 */