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add scoped class for controlling Farkas generalization

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-08-07 19:58:21 -07:00
parent 327b2bbe9c
commit 5b9ec3dec7
4 changed files with 15 additions and 3 deletions
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11
src/muz_qe/pdr_context.h
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@ -165,8 +165,19 @@ namespace pdr {
void ground_free_vars(expr* e, app_ref_vector& vars, ptr_vector<app>& aux_vars);
prop_solver& get_solver() { return m_solver; }
prop_solver const& get_solver() const { return m_solver; }
void set_use_farkas(bool f) { get_solver().set_use_farkas(f); }
bool get_use_farkas() const { return get_solver().get_use_farkas(); }
class scoped_farkas {
bool m_old;
pred_transformer& m_p;
public:
scoped_farkas(pred_transformer& p, bool v): m_old(p.get_use_farkas()), m_p(p) {
p.set_use_farkas(v);
}
~scoped_farkas() { m_p.set_use_farkas(m_old); }
};
};