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initial pass at using derivatives in regex unfolding

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-23 11:52:53 -07:00
parent b7b8ed23fb
commit eb3f20832e
11 changed files with 694 additions and 228 deletions
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2
src/ast/seq_decl_plugin.h
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@ -242,7 +242,7 @@ public:
bool is_re(sort* s) const { return is_sort_of(s, m_fid, RE_SORT); }
bool is_re(sort* s, sort*& seq) const { return is_sort_of(s, m_fid, RE_SORT) && (seq = to_sort(s->get_parameter(0).get_ast()), true); }
bool is_seq(expr* e) const { return is_seq(m.get_sort(e)); }
bool is_seq(sort* s, sort*& seq) { return is_seq(s) && (seq = to_sort(s->get_parameter(0).get_ast()), true); }
bool is_seq(sort* s, sort*& seq) const { return is_seq(s) && (seq = to_sort(s->get_parameter(0).get_ast()), true); }
bool is_re(expr* e) const { return is_re(m.get_sort(e)); }
bool is_re(expr* e, sort*& seq) const { return is_re(m.get_sort(e), seq); }
bool is_char(expr* e) const { return is_char(m.get_sort(e)); }