sc_terminal.h

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/*****************************************************************************

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/*****************************************************************************

  sc_terminal.h -- terminals of master/slave ports.

  Original Author: Dirk Vermeersch, Coware, Inc.
                   Vijay Kumar, Coware, Inc.

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
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      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/
#ifndef SC_TERMINAL_H
#define SC_TERMINAL_H

#include "sc_ms/sc_self_binding_terminal_b.h"

//---------------------------------------------------------------
template<class T, class base, sc_terminal_type TTYPE, int N>
class sc_terminal_b : 
  public sc_self_binding_terminal_b,
  public base
{
protected:
  int			index;
  sc_terminal_type	ttype;
public:
  virtual sc_self_binding_port_b* get_registered_self_binding_port( ) {
    return current_port_protocol;
  }
  
  int			get_index( ) { return index; }
  sc_interface*		make_signal( ) { return new sc_signal<T>( ); }
  sc_terminal_type 	get_terminal_type( ) { return ttype; }

  virtual void bind( sc_interface* signal ) {
    sc_signal<T>* sig = dynamic_cast< sc_signal<T>* > ( signal );
    assert( sig );
    base::bind( *sig );
  }

  virtual void bind( sc_self_binding_terminal_b* other ) {
    // for the time being we need to assume that the other port
    // has the same dynamic type as this
    base* other_b = dynamic_cast< base* > ( other );
    base::bind( *other_b );
  }

  sc_terminal_b( ) {  // constructor
    ttype = TTYPE;
    if ( N<0 ) {
      switch ( ttype ) {
      case TT_DATA:
	index = get_registered_self_binding_port( )->get_data_index( );
	break;

      case TT_ADDRESS:
	index = get_registered_self_binding_port( )->get_address_index( );
	break;

      case TT_CONTROL:
	index = get_registered_self_binding_port( )->get_control_index( );
	break;
      } // switch
    } else {
      index = N;
    }
    assert( index != -1 );
  }
}; // sc_terminal_b

//---------------------------------------------------------------
template<class T, sc_terminal_type ttype=TT_DATA, int N=-1>
class sc_terminal_in : public sc_terminal_b<T, sc_in<T>, ttype, N>
{
public:
  sc_terminal_in( ) {
    get_registered_self_binding_port( )->add_terminal_b( this, get_index( ) );
  }

};

template<class T, sc_terminal_type ttype=TT_DATA, int N=-1>
class sc_terminal_out : public sc_terminal_b<T, sc_out<T>, ttype, N>
{
public:
  typedef sc_terminal_out this_type;

  sc_terminal_out( ) {
    get_registered_self_binding_port( )->add_terminal_b( this, get_index( ) );
  }
  
  void write(const T& d) { sc_out<T>::write(d); }

  this_type& operator=(const T& d) {
    write( d );
    return *this;
  }
  
  this_type& operator=(sc_signal<T>& sig) {
    write( sig.read( ) );
    return *this;
  }
};

template<class T, sc_terminal_type ttype=TT_DATA, int N=-1>
class sc_terminal_inout : public sc_terminal_b<T, sc_inout<T>, ttype, N>
{
public:
  typedef sc_terminal_inout this_type;
  
  sc_terminal_inout( ) {
    get_registered_self_binding_port( )->add_terminal_b( this, get_index( ) );
  }
  this_type& write(const T& d) { 
    sc_inout<T>::write(d); 
    return *this;
  }

  this_type& operator=(const T& d)		{ return write( d ); }
  this_type& operator=(sc_signal<T>& sig)	{ return write( sig.read( ) ); }
  this_type& operator=(sc_inout<T>& port)	{ return write( port.read( ) ); }
};

#endif // SC_TERMINAL_H