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Revert "Use new Svt_INVLIST for inversion lists."
[perl5.git] / inline_invlist.c
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d812d165 1/* inline_invlist.c
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2 *
3 * Copyright (C) 2012 by Larry Wall and others
4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
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7 */
8
9#if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
10
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11/* An element is in an inversion list iff its index is even numbered: 0, 2, 4,
12 * etc */
13#define ELEMENT_RANGE_MATCHES_INVLIST(i) (! ((i) & 1))
14#define PREV_RANGE_MATCHES_INVLIST(i) (! ELEMENT_RANGE_MATCHES_INVLIST(i))
15
2c3365de 16PERL_STATIC_INLINE STRLEN*
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17S__get_invlist_len_addr(pTHX_ SV* invlist)
18{
19 /* Return the address of the UV that contains the current number
20 * of used elements in the inversion list */
21
22 PERL_ARGS_ASSERT__GET_INVLIST_LEN_ADDR;
23
2e0b8fbe 24 return &(LvTARGLEN(invlist));
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25}
26
27PERL_STATIC_INLINE UV
28S__invlist_len(pTHX_ SV* const invlist)
29{
30 /* Returns the current number of elements stored in the inversion list's
31 * array */
32
33 PERL_ARGS_ASSERT__INVLIST_LEN;
34
35 return *_get_invlist_len_addr(invlist);
36}
37
38PERL_STATIC_INLINE bool
39S__invlist_contains_cp(pTHX_ SV* const invlist, const UV cp)
40{
41 /* Does <invlist> contain code point <cp> as part of the set? */
42
43 IV index = _invlist_search(invlist, cp);
44
45 PERL_ARGS_ASSERT__INVLIST_CONTAINS_CP;
46
47 return index >= 0 && ELEMENT_RANGE_MATCHES_INVLIST(index);
48}
49
81e983c1 50#endif