ACE/ace/Monitor_Control/Constraint_Visitor.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  * @file Constraint_Visitor.h
   6  *
   7  * @author Jeff Parsons <j.parsons@vanderbilt.edu>
   8  */
   9 //=============================================================================
  10
  11 #ifndef CONSTRAINT_VISITOR_H
  12 #define CONSTRAINT_VISITOR_H
  13
  14 #include /**/ "ace/pre.h"
  15
  16 #include "ace/CDR_Base.h"
  17
  18 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  19 #pragma once
  20 #endif /* ACE_LACKS_PRAGMA_ONCE */
  21
  22 #if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
  23
  24 #include "ace/Monitor_Control_Types.h"
  25
  26 #include "ace/ETCL/ETCL_Constraint.h"
  27 #include "ace/ETCL/ETCL_Constraint_Visitor.h"
  28
  29 #include "ace/Monitor_Control/Monitor_Control_export.h"
  30
  31 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  32
  33 class ETCL_Literal_Constraint;
  34 class ETCL_Identifier;
  35 class ETCL_Unary_Expr;
  36 class ETCL_Binary_Expr;
  37 class ETCL_Constraint;
  38
  39 namespace ACE
  40 {
  41   namespace Monitor_Control
  42   {
  43     /**
  44      * @class Constraint_Visitor
  45      *
  46      * @brief Backend for the non-CORBA ETCL frontend, specific to
  47      *        MonitorControl and supporting only basic types not
  48               specific to CORBA.
  49      */
  50     class MONITOR_CONTROL_Export Constraint_Visitor
  51       : public ETCL_Constraint_Visitor
  52     {
  53     public:
  54       Constraint_Visitor (const Monitor_Control_Types::Data& data);
  55       ~Constraint_Visitor () override = default;
  56
  57       ACE_CDR::Boolean evaluate_constraint (ETCL_Constraint *root);
  58
  59       int visit_literal (ETCL_Literal_Constraint *) override;
  60       int visit_identifier (ETCL_Identifier *) override;
  61       int visit_unary_expr (ETCL_Unary_Expr *) override;
  62       int visit_binary_expr (ETCL_Binary_Expr *) override;
  63
  64     private:
  65       /// Sub-methods for visit_binary_expr().
  66       int visit_or (ETCL_Binary_Expr *);
  67       int visit_and (ETCL_Binary_Expr *);
  68       int visit_binary_op (ETCL_Binary_Expr *binary_expr,
  69                            int op_type);
  70
  71     private:
  72       const Monitor_Control_Types::Data& data_;
  73       ACE_Unbounded_Queue<ETCL_Literal_Constraint> queue_;
  74     };
  75   }
  76 }
  77
  78 ACE_END_VERSIONED_NAMESPACE_DECL
  79
  80 #endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
  81
  82 #include /**/ "ace/post.h"
  83
  84 #endif // CONSTRAINT_VISITOR_H