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seq API

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-01-02 23:31:36 -08:00
parent 1147037a99
commit b5969326bc
3 changed files with 107 additions and 27 deletions
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3
src/ast/rewriter/seq_rewriter.cpp
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@ -822,7 +822,8 @@ br_status seq_rewriter::mk_re_plus(expr* a, expr_ref& result) {
br_status seq_rewriter::mk_re_opt(expr* a, expr_ref& result) {
sort* s;
VERIFY(m_util.is_re(a, s));
result = m_util.re.mk_union(m_util.re.mk_to_re(m_util.str.mk_empty(s)), a);
sort_ref seq(m_util.str.mk_seq(s), m());
result = m_util.re.mk_union(m_util.re.mk_to_re(m_util.str.mk_empty(seq)), a);
return BR_REWRITE1;
}