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// -*- C++ -*-
//=============================================================================
/**
* @file Constraint_Interpreter.h
*
* $Id$
*
* @author Jeff Parsons <j.parsons@vanderbilt.edu>
*/
//=============================================================================
#ifndef CONSTRAINT_INTERPRETER_H
#define CONSTRAINT_INTERPRETER_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/ETCL/ETCL_Interpreter.h"
#include "ace/Monitor_Control/Monitor_Control_export.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
namespace ACE
{
namespace Monitor_Control
{
class Constraint_Visitor;
/**
* @class Constraint_Interpreter
*
* @brief "ETCL" Interpreter for MonitorControl constraints,
specialized to encapsulate MonitorControl-specific
knowledge of types and visitors.
*/
class MONITOR_CONTROL_Export Constraint_Interpreter
: public ETCL_Interpreter
{
public:
Constraint_Interpreter (void);
virtual ~Constraint_Interpreter (void);
/**
* This method builds an expression tree representing the
* constraint specified in <constraints>, and returns -1 with
* an error message if the constraint given has syntax errors or
* semantic errors, such as mismatched types.
*/
int build_tree (const char* constraints);
/// Returns true if the constraint is evaluated successfully by
/// the evaluator.
ACE_CDR::Boolean evaluate (Constraint_Visitor &evaluator);
};
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
#include /**/ "ace/post.h"
#endif /* CONSTRAINT_INTERPRETER_H */
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