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// -*- C++ -*-
//=============================================================================
/**
* @file Constraint_Visitor.h
*
* @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);
~Constraint_Visitor () override = default;
ACE_CDR::Boolean evaluate_constraint (ETCL_Constraint *root);
int visit_literal (ETCL_Literal_Constraint *) override;
int visit_identifier (ETCL_Identifier *) override;
int visit_unary_expr (ETCL_Unary_Expr *) override;
int visit_binary_expr (ETCL_Binary_Expr *) override;
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
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