Add support for perl 5.20.2

[perl/modules/re-engine-Hooks.git] / src / 5020002 / inline_invlist.c

diff --git a/src/5020002/inline_invlist.c b/src/5020002/inline_invlist.c
new file mode 100644 (file)
index 0000000..de3cecd
--- /dev/null
+++ b/src/5020002/inline_invlist.c
@@ -0,0 +1,67 @@
+/*    inline_invlist.c
+ *
+ *    Copyright (C) 2012 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.
+ */
+
+#if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
+
+/* An element is in an inversion list iff its index is even numbered: 0, 2, 4,
+ * etc */
+#define ELEMENT_RANGE_MATCHES_INVLIST(i) (! ((i) & 1))
+#define PREV_RANGE_MATCHES_INVLIST(i) (! ELEMENT_RANGE_MATCHES_INVLIST(i))
+
+/* This converts to/from our UVs to what the SV code is expecting: bytes. */
+#define TO_INTERNAL_SIZE(x) ((x) * sizeof(UV))
+#define FROM_INTERNAL_SIZE(x) ((x)/ sizeof(UV))
+
+PERL_STATIC_INLINE bool*
+S_get_invlist_offset_addr(pTHX_ SV* invlist)
+{
+ /* Return the address of the field that says whether the inversion list is
+ * offset (it contains 1) or not (contains 0) */
+
+ PERL_ARGS_ASSERT_GET_INVLIST_OFFSET_ADDR;
+
+ assert(SvTYPE(invlist) == SVt_INVLIST);
+
+ return &(((XINVLIST*) SvANY(invlist))->is_offset);
+}
+
+PERL_STATIC_INLINE UV
+S__invlist_len(pTHX_ SV* const invlist)
+{
+ /* Returns the current number of elements stored in the inversion list's
+ * array */
+
+ PERL_ARGS_ASSERT__INVLIST_LEN;
+
+ assert(SvTYPE(invlist) == SVt_INVLIST);
+
+ return (SvCUR(invlist) == 0)
+  ? 0
+  : FROM_INTERNAL_SIZE(SvCUR(invlist)) - *get_invlist_offset_addr(invlist);
+}
+
+PERL_STATIC_INLINE bool
+S__invlist_contains_cp(pTHX_ SV* const invlist, const UV cp)
+{
+ /* Does <invlist> contain code point <cp> as part of the set? */
+
+ IV index = _invlist_search(invlist, cp);
+
+ PERL_ARGS_ASSERT__INVLIST_CONTAINS_CP;
+
+ return index >= 0 && ELEMENT_RANGE_MATCHES_INVLIST(index);
+}
+
+#   if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGEXEC_C)
+
+/* These symbols are only needed later in regcomp.c */
+#       undef TO_INTERNAL_SIZE
+#       undef FROM_INTERNAL_SIZE
+#   endif
+
+#endif