JBinaryFileReader.hh

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#ifndef __JIO__JBINARYFILEREADER__
#define __JIO__JBINARYFILEREADER__
 
#include <istream>
 
#include "JLang/JAccessibleBinaryStream.hh"
#include "JLang/JObjectIterator.hh"
#include "JLang/JConversion.hh"
 
#include "JIO/JStreamIO.hh"
#include "JIO/JReaderObjectIterator.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JIO {}
namespace JPP { using namespace JIO; }
 
namespace JIO {
 
  using JLANG::JAccessibleObjectIterator;
  using JLANG::JAccessibleBinaryInputStream;
  using JLANG::JNullAccess;
  using JLANG::JNullIterator;
 
 
  /**
   * Object reading from binary file (i.e.\ .jpp).
   */
  template<class T, const bool = JLANG::JConversion<T,JSerialisable>::is_derived>
  class JBinaryFileReader;
 
  /**
   * Template specialisation of JBinaryFileReader for serialisable data types.
   *
   * This class provides for an implementation of the JLANG::JAccessibleObjectIterator interface.
   */
  template<class T>
  class JBinaryFileReader<T, true> :
    public JAccessibleObjectIterator<T>,
    public JAccessibleBinaryInputStream,
    public JStreamReader,
    public JReaderObjectIterator<T>
  {
  public:
    /**
     * Default constructor.
     */
    JBinaryFileReader() :
      JAccessibleBinaryInputStream(),
      JStreamReader           (static_cast<std::istream&> (*this)),
      JReaderObjectIterator<T>(static_cast<JStreamReader&>(*this))
    {}
  };
 
 
  /**
   * Template specialisation of JBinaryFileReader for unserialisable data types.
   *
   * This class provides for a null implementation of the JLANG::JAccessibleObjectIterator interface.
   */
  template<class T>
  class JBinaryFileReader<T, false> :
    public JAccessibleObjectIterator<T>,
    public JNullAccess,
    public JNullIterator<T>
  {};
}
 
#endif