Z3 sources

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

lib/model_evaluator.h

@@ -0,0 +1,51 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    model_evaluator.h
+
+Abstract:
+
+    Evaluate expressions in a given model.
+
+Author:
+
+    Leonardo de Moura (leonardo) 2011-04-30.
+
+Revision History:
+
+--*/
+#ifndef _MODEL_EVALUATOR_H_
+#define _MODEL_EVALUATOR_H_
+
+#include"ast.h"
+#include"rewriter_types.h"
+#include"params.h"
+class model;
+
+typedef rewriter_exception model_evaluator_exception;
+
+class model_evaluator {
+    struct imp;
+    imp *  m_imp;
+public:
+    model_evaluator(model & m, params_ref const & p = params_ref());
+    ~model_evaluator();
+
+    ast_manager & m () const;
+    void set_model_completion(bool f);
+
+    void updt_params(params_ref const & p);
+    static void get_param_descrs(param_descrs & r);
+
+    void operator()(expr * t, expr_ref & r);
+
+    void cancel();
+    void cleanup(params_ref const & p = params_ref());
+    void reset(params_ref const & p = params_ref());
+    
+    unsigned get_num_steps() const;
+};
+
+#endif