Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/theory_dummy.h

@@ -0,0 +1,58 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    theory_no_arith.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2008-12-30.
+
+Revision History:
+
+--*/
+#ifndef _THEORY_DUMMY_H_
+#define _THEORY_DUMMY_H_
+
+#include"smt_theory.h"
+
+namespace smt {
+
+    /**
+       \brief Do nothing theory. Tracks whether theory expressions were internalized.
+       When theory expressions were internalized, it returns FC_GIVEUP in the final_check_eh.
+    */
+    class theory_dummy : public theory {
+        bool         m_theory_exprs;
+        char const * m_name;
+        void found_theory_expr();
+
+    protected:
+        virtual bool internalize_atom(app * atom, bool gate_ctx);
+        virtual bool internalize_term(app * term);
+        virtual void new_eq_eh(theory_var v1, theory_var v2);
+        virtual bool use_diseqs() const;
+        virtual void new_diseq_eh(theory_var v1, theory_var v2);
+        virtual void reset_eh();
+        virtual final_check_status final_check_eh();
+        virtual bool build_models() const { 
+            return false;
+        }
+
+    public:
+        theory_dummy(family_id fid, char const * name);
+        virtual ~theory_dummy() {}
+
+        virtual theory * mk_fresh(context * new_ctx) { return alloc(theory_dummy, get_family_id(), m_name); }
+
+        virtual char const * get_name() const;
+    };
+};
+
+#endif /* _THEORY_DUMMY_H_ */
+