TAO/TAO_IDL/be_include/be_union.h

   1
   2 //=============================================================================
   3 /**
   4  *  @file    be_union.h
   5  *
   6  *  Extension of class AST_Union that provides additional means for C++
   7  *  mapping.
   8  *
   9  *  @author Copyright 1994-1995 by Sun Microsystems
  10  *  @author Inc. and Aniruddha Gokhale
  11  */
  12 //=============================================================================
  13
  14 #ifndef BE_UNION_H
  15 #define BE_UNION_H
  16
  17 #include "be_type.h"
  18 #include "be_scope.h"
  19 #include "ast_union.h"
  20
  21 class AST_ConcreteType;
  22 class be_visitor;
  23
  24 class be_union : public virtual AST_Union,
  25                  public virtual be_scope,
  26                  public virtual be_type
  27 {
  28 public:
  29   be_union (AST_ConcreteType *dt,
  30             UTL_ScopedName *n,
  31             bool local,
  32             bool abstract);
  33
  34   /// Catch BE-specific member values before delegating to the base class.
  35   virtual void redefine (AST_Structure *from);
  36
  37   /// Do we have at least one member with multiple case labels?
  38   virtual bool has_duplicate_case_labels (void);
  39
  40   /// Overridden from class be_type.
  41   virtual void gen_ostream_operator (TAO_OutStream *os,
  42                                      bool use_underscore);
  43
  44   /// Cleanup function.
  45   virtual void destroy (void);
  46
  47   /// Visiting.
  48   virtual int accept (be_visitor *visitor);
  49
  50   /// Decides whether a default switch case label in the generated copy
  51   /// constructor, assignment operator, etc. is needed.
  52   bool gen_empty_default_label (void);
  53
  54   /// Just a way to get at fe_add_union_branch() from the backend.
  55   AST_UnionBranch *be_add_union_branch (AST_UnionBranch *b);
  56
  57   /// Returns total number of labels, useful when the union has
  58   /// multiple case labels.
  59   ACE_UINT64 nlabels (void);
  60
  61   // Narrowing.
  62
  63   DEF_NARROW_FROM_DECL(be_union);
  64   DEF_NARROW_FROM_SCOPE(be_union);
  65 };
  66
  67 #endif