1 files changed, 86 insertions, 0 deletions
diff --git a/ACE/ace/Monitor_Control/Constraint_Visitor.h b/ACE/ace/Monitor_Control/Constraint_Visitor.h
new file mode 100644
index 00000000000..94b686307e4
--- /dev/null
+++ b/ACE/ace/Monitor_Control/Constraint_Visitor.h
@@ -0,0 +1,86 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ * @file Constraint_Visitor.h
+ *
+ * $Id$
+ *
+ * @author Jeff Parsons <j.parsons@vanderbilt.edu>
+ */
+//=============================================================================
+
+#ifndef CONSTRAINT_VISITOR_H
+#define CONSTRAINT_VISITOR_H
+
+#include /**/ "ace/pre.h"
+
+#include "ace/CDR_Base.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+#pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
+
+#include "ace/Monitor_Control_Types.h"
+
+#include "ace/ETCL/ETCL_Constraint.h"
+#include "ace/ETCL/ETCL_Constraint_Visitor.h"
+
+#include "ace/Monitor_Control/Monitor_Control_export.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+class ETCL_Literal_Constraint;
+class ETCL_Identifier;
+class ETCL_Unary_Expr;
+class ETCL_Binary_Expr;
+class ETCL_Constraint;
+
+namespace ACE
+{
+  namespace Monitor_Control
+  {
+    /**
+     * @class Constraint_Visitor
+     *
+     * @brief Backend for the non-CORBA ETCL frontend, specific to
+     *        MonitorControl and supporting only basic types not
+              specific to CORBA.
+     */
+    class MONITOR_CONTROL_Export Constraint_Visitor
+      : public ETCL_Constraint_Visitor
+    {
+    public:
+      Constraint_Visitor (const Monitor_Control_Types::Data& data);
+      virtual ~Constraint_Visitor (void);
+
+      ACE_CDR::Boolean evaluate_constraint (ETCL_Constraint *root);
+
+      virtual int visit_literal (ETCL_Literal_Constraint *);
+      virtual int visit_identifier (ETCL_Identifier *);
+      virtual int visit_unary_expr (ETCL_Unary_Expr *);
+      virtual int visit_binary_expr (ETCL_Binary_Expr *);
+
+    private:
+      /// Sub-methods for visit_binary_expr().
+      int visit_or (ETCL_Binary_Expr *);
+      int visit_and (ETCL_Binary_Expr *);
+      int visit_binary_op (ETCL_Binary_Expr *binary_expr,
+                           int op_type);
+
+    private:
+      const Monitor_Control_Types::Data& data_;
+      ACE_Unbounded_Queue<ETCL_Literal_Constraint> queue_;
+    };
+  }
+}
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
+
+#include /**/ "ace/post.h"
+
+#endif // CONSTRAINT_VISITOR_H