reorganizing the code

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

src/ast/simplifier/bv_elim.h

@@ -0,0 +1,45 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    bv_elim.h
+
+Abstract:
+
+    Eliminate bit-vectors variables from clauses, by
+    replacing them by bound Boolean variables.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2008-12-16.
+
+Revision History:
+
+--*/
+#ifndef _BV_ELIM_H_
+#define _BV_ELIM_H_
+
+#include "ast.h"
+#include "simplifier.h"
+
+class bv_elim {
+    ast_manager& m_manager;
+public:
+    bv_elim(ast_manager& m) : m_manager(m) {};
+
+    void elim(quantifier* q, quantifier_ref& r);
+};
+
+class bv_elim_star : public simplifier {
+protected:
+    bv_elim m_bv_elim;
+    virtual bool visit_quantifier(quantifier* q);
+    virtual void reduce1_quantifier(quantifier* q);
+public:
+    bv_elim_star(ast_manager& m) : simplifier(m), m_bv_elim(m) { enable_ac_support(false); }
+    virtual ~bv_elim_star() {}
+};
+
+#endif /* _BV_ELIM_H_ */
+