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fix #2531

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-09-02 09:59:58 -07:00
parent 000e485794
commit 68e4ed3c9c
5 changed files with 85 additions and 11 deletions
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20
src/ast/for_each_expr.h
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@ -167,5 +167,25 @@ unsigned get_num_exprs(expr * n, expr_fast_mark1 & visited);
bool has_skolem_functions(expr * n);
class subterms {
expr_ref_vector m_es;
public:
class iterator {
expr_ref_vector m_es;
expr_mark m_visited;
public:
iterator(subterms& f, bool start);
expr* operator*();
iterator operator++(int);
iterator& operator++();
bool operator==(iterator const& other) const;
bool operator!=(iterator const& other) const;
};
subterms(expr_ref_vector const& es);
subterms(expr_ref& e);
iterator begin();
iterator end();
};
#endif /* FOR_EACH_EXPR_H_ */