// This may look like C, but it's really -*- C++ -*-
// ast_sequence.h,v 1.17 2006/06/15 18:56:10 parsons Exp
/*

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*/

#ifndef _AST_SEQUENCE_AST_SEQUENCE_HH
#define _AST_SEQUENCE_AST_SEQUENCE_HH

#include "ast_concrete_type.h"


class AST_Expression;
class AST_Type;

// A sequence is a combination of a maximum size and a base type.

class TAO_IDL_FE_Export AST_Sequence : public virtual AST_ConcreteType
{
public:
  AST_Sequence (void);

  AST_Sequence (AST_Expression *max_size,
                AST_Type *bt,
                UTL_ScopedName *n,
                bool local,
                bool abstract);

  virtual ~AST_Sequence (void);

  virtual bool in_recursion (ACE_Unbounded_Queue<AST_Type *> &list);
  // Are we or the node represented by node involved in recursion.

  // Data Accessors.
  AST_Expression *max_size (void);

  AST_Type *base_type (void) const;

  virtual bool unbounded (void) const;
  // Is this sequence bounded or not.

  // Recursively called on valuetype to check for legal use as
  // a primary key. Overridden for valuetype, struct, sequence,
  // union, array, typedef, and interface.
  virtual bool legal_for_primary_key (void) const;
  
  // Cleanup method.
  virtual void destroy (void);

  // Narrowing.
  DEF_NARROW_METHODS1(AST_Sequence, AST_ConcreteType);
  DEF_NARROW_FROM_DECL(AST_Sequence);

  // AST Dumping.
  virtual void dump (ACE_OSTREAM_TYPE &o);

  // Visiting.
  virtual int ast_accept (ast_visitor *visitor);

private:
  // Data.
  AST_Expression *pd_max_size;
  // Maximum sequence size.

  AST_Type *pd_base_type;
  // Sequence base type.

  bool unbounded_;
  // Whether we are bounded or unbounded.
  
  bool owns_base_type_;
  // If our base type is anonymous array or sequence, we're
  // responsible for destroying it.
};

#endif           // _AST_SEQUENCE_AST_SEQUENCE_HH
