Z3 sources

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

lib/smt_euf.h

@@ -0,0 +1,55 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    smt_euf.h
+
+Abstract:
+
+    Equality and uninterpreted functions
+
+Author:
+
+    Leonardo de Moura (leonardo) 2012-02-14.
+
+Revision History:
+
+--*/
+#ifndef _SMT_EUF_H_
+#define _SMT_EUF_H_
+
+#include"ast.h"
+#include"smt_enode.h"
+#include"smt_eq_justification.h"
+
+namespace smt {
+    class context;
+
+    class euf_manager {
+        struct imp;
+        imp * m_imp;
+    public:
+        euf_manager(context & ctx);
+        ~euf_manager();
+
+        enode * mk_enode(app * n, bool suppress_args, bool merge_tf, bool cgc_enabled);
+        
+        void add_eq(enode * n1, enode * n2, eq_justification js);
+        bool assume_eq(enode * lhs, enode * rhs);
+        void reset();
+        
+        static bool is_eq(enode const * n1, enode const * n2) { return n1->get_root() == n2->get_root(); }
+        bool is_diseq(enode * n1, enode * n2) const;
+        bool is_ext_diseq(enode * n1, enode * n2, unsigned depth);
+        enode * get_enode_eq_to(func_decl * f, unsigned num_args, enode * const * args);
+        bool is_shared(enode * n) const;
+
+        unsigned get_num_enodes_of(func_decl const * decl) const;
+        enode_vector::const_iterator begin_enodes_of(func_decl const * decl) const;
+        enode_vector::const_iterator end_enodes_of(func_decl const * decl) const;
+    };
+};
+
+
+#endif