fe_interface_header.h

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// fe_interface_header.h,v 1.11 2002/09/25 16:25:39 parsons Exp

/*

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and documentation for the Interface Definition Language CFE.

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 */

#ifndef _FE_INTERFACE_HEADER_FE_INTERFACE_HH
#define _FE_INTERFACE_HEADER_FE_INTERFACE_HH

#include "utl_scoped_name.h"

class UTL_NameList;
class AST_Interface;
class AST_ValueType;
class AST_Component;
class AST_Home;

// FE_interfade_header
// Internal class for FE to describe interface headers
//
// FE_obv_header
// Internal class for FE to describe valuetype headers.
//
// FE_component_header
// Internal class for FE to describe component headers.

class TAO_IDL_FE_Export FE_InterfaceHeader
{
public:
  FE_InterfaceHeader (UTL_ScopedName *n,
                      UTL_NameList *inherits,
                      idl_bool is_local,
                      idl_bool is_abstract,
                      idl_bool compile_now);

  virtual ~FE_InterfaceHeader (void);

  // Data Accessors.
  UTL_ScopedName *name (void) const;
  AST_Interface **inherits (void) const;
  long n_inherits (void) const;
  AST_Interface **inherits_flat (void) const;
  long n_inherits_flat (void) const;

  idl_bool is_local (void) const;
  // See if we are a local interface.

  idl_bool is_abstract (void) const;
  // See if we are an abstract interface.

  // Data.
protected:
  UTL_ScopedName *pd_interface_name;

  // Inherited interfaces.
  AST_Interface **pd_inherits;
  long pd_n_inherits;

  // Used for name clash checking.
  AST_Interface  **pd_inherits_flat;
  long pd_n_inherits_flat;

  idl_bool pd_is_local;
  idl_bool pd_is_abstract;

  // Operations.

  // Compile the flattened unique list of interfaces which this
  // interface inherits from.
protected:
  virtual void compile_inheritance (UTL_NameList *ifaces,
                                    idl_bool for_valuetype);

  void compile_one_inheritance (AST_Interface *i);

  // Called from compile_inheritance().
  int check_inherit (AST_Interface *i,
                     idl_bool for_valuetype);
};

class TAO_IDL_FE_Export FE_OBVHeader : public FE_InterfaceHeader
{
public:

  FE_OBVHeader (UTL_ScopedName *n, 
                UTL_NameList *inherits, 
                UTL_NameList *supports,
                idl_bool truncatable,
                idl_bool is_eventtype = I_FALSE);
  virtual ~FE_OBVHeader (void);

  // Data Accessors.
  AST_Interface **supports (void) const;
  long n_supports (void) const;
  AST_ValueType *inherits_concrete (void) const;
  AST_Interface *supports_concrete (void) const;
  idl_bool truncatable (void) const;

protected:
  // Supported interfaces.
  AST_Interface **pd_supports;
  long pd_n_supports;

  AST_ValueType *pd_inherits_concrete;
  AST_Interface *pd_supports_concrete;

  // Currently ignored.
  idl_bool pd_truncatable;

protected:
  void compile_supports (UTL_NameList *supports);
  idl_bool check_concrete_supported_inheritance (AST_Interface *d);
};

class TAO_IDL_FE_Export FE_EventHeader : public FE_OBVHeader
{
public:

  FE_EventHeader (UTL_ScopedName *n, 
                  UTL_NameList *inherits, 
                  UTL_NameList *supports,
                  idl_bool truncatable);
  virtual ~FE_EventHeader (void);
};

// Unlike value types, a component's supported interfaces are simply
// added to the inheritance list in generated code, so we use the
// existing base class mechanism for managing the inheritance list 
// to manage the derived class's supported interface list.
class TAO_IDL_FE_Export FE_ComponentHeader : public FE_InterfaceHeader
{
public:

  FE_ComponentHeader (UTL_ScopedName *n, 
                      UTL_ScopedName *base_component, 
                      UTL_NameList *supports,
                      idl_bool compile_now);
  virtual ~FE_ComponentHeader (void);

  // Data Accessors.
  AST_Component *base_component (void) const;
  AST_Interface **supports (void) const;
  long n_supports (void) const;
  AST_Interface **supports_flat (void) const;
  long n_supports_flat (void) const;

protected:
  AST_Component *pd_base_component;
};

// We use the 'base_component' member of the base class to
// store the 'managed_component' member of the derived class.
// By inheriting from FE_ComponentHeader, we also get the
// reuse of the mechanism described in the comment above
// for handling the supported interface list.
class TAO_IDL_FE_Export FE_HomeHeader : public FE_ComponentHeader
{
public:

  FE_HomeHeader (UTL_ScopedName *n, 
                 UTL_ScopedName *base_home, 
                 UTL_NameList *supports,
                 UTL_ScopedName *managed_component,
                 UTL_ScopedName *primary_key);
  virtual ~FE_HomeHeader (void);

  // Data Accessors.
  AST_Home *base_home (void) const;
  AST_Component *managed_component (void) const;
  AST_ValueType *primary_key (void) const;

protected:
  AST_Home *pd_base_home;
  AST_ValueType *pd_primary_key;

protected:
  virtual void compile_inheritance (UTL_NameList *supports,
                                    idl_bool for_valuetype);
};

#endif           // _FE_INTERFACE_HEADER_FE_INTERFACE_HH