#ifndef STEPUNDEFINED_H

#define STEPUNDEFINED_H

/*

* NIST STEP Core Class Library

* clstepcore/STEPundefined.h

* April 1997

* KC Morris

* David Sauder

* Development of this software was funded by the United States Government,

* and is not subject to copyright.

*/

#include <scl_export.h>

#include <errordesc.h>

#include <string>

#include <read_func.h>

class SCL_CORE_EXPORT SCLundefined {

protected:

std::string val;

public:

// INPUT

virtual Severity StrToVal( const char * s, ErrorDescriptor * err );

virtual Severity StrToVal( istream & in, ErrorDescriptor * err );

virtual Severity STEPread( const char * s, ErrorDescriptor * err );

virtual Severity STEPread( istream & in, ErrorDescriptor * err );

// OUTPUT

virtual const char * asStr( std::string & s ) const;

virtual const char * STEPwrite( std::string & s );

virtual void STEPwrite( ostream & out = cout );

int set_null();

int is_null();

SCLundefined & operator= ( const SCLundefined & );

SCLundefined & operator= ( const char * str );

SCLundefined();

virtual ~SCLundefined();

};

#endif