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/* 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))
PERL_STATIC_INLINE STRLEN*
S__get_invlist_len_addr(pTHX_ SV* invlist)
{
/* Return the address of the UV that contains the current number
* of used elements in the inversion list */
PERL_ARGS_ASSERT__GET_INVLIST_LEN_ADDR;
return &(LvTARGLEN(invlist));
}
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;
return *_get_invlist_len_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);
}
#endif
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