sat solver setup

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/sat/smt/atom2bool_var.h

@@ -0,0 +1,42 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    atom2bool_var.h
+
+Abstract:
+
+    The mapping between SAT boolean variables and atoms
+
+Author:
+
+    Leonardo (leonardo) 2011-10-25
+
+Notes:
+
+--*/
+#pragma once
+
+#include "ast/expr2var.h"
+#include "sat/sat_types.h"
+
+/**
+   \brief Mapping from atoms into SAT boolean variables.
+*/
+class atom2bool_var : public expr2var {
+public:
+    atom2bool_var(ast_manager & m):expr2var(m) {}
+    void insert(expr * n, sat::bool_var v) { expr2var::insert(n, v); }
+    sat::bool_var to_bool_var(expr * n) const;
+    void mk_inv(expr_ref_vector & lit2expr) const;
+    void mk_var_inv(app_ref_vector & var2expr) const;
+    // return true if the mapping contains uninterpreted atoms.
+    bool interpreted_atoms() const { return expr2var::interpreted_vars(); }
+};
+
+class goal;
+
+void collect_boolean_interface(goal const & g, obj_hashtable<expr> & r);
+void collect_boolean_interface(ast_manager & m, unsigned num, expr * const * fs, obj_hashtable<expr> & r);
+