/usr/include/BALL/KERNEL/expressionPredicate.h is in libball1.4-dev 1.4.3~beta1-3.
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// vi: set ts=2:
//
// $Id: expressionPredicate.h,v 1.12 2005/10/23 12:02:18 oliver Exp $
//
#ifndef BALL_KERNEL_EXPRESSIONPREDICATE_H
#define BALL_KERNEL_EXPRESSIONPREDICATE_H
#ifndef BALL_KERNEL_ATOM_H
# include <BALL/KERNEL/atom.h>
#endif
namespace BALL
{
/** ExpressionPredicate.
The base class for all kernel predicates (defined in BALL/KERNEL/standardPredicates.h
and used by \link Expression Expression \endlink . You have to derive your own predicate classes from
this class if you want to use (and register) them with \link Expression Expression \endlink .
\par
@see Expression
\ingroup Predicates
*/
class BALL_EXPORT ExpressionPredicate
: public UnaryPredicate<Atom>
{
public:
BALL_CREATE(ExpressionPredicate)
/** @name Constructors and Destructor.
*/
//@{
/** Default Constructor
*/
ExpressionPredicate();
/** Copy constructor
*/
ExpressionPredicate(const ExpressionPredicate& predicate);
/** Detailed Constructor.
Construct an ExpressionPredicate with a string.
@param argument the argument to use for this predicate
*/
ExpressionPredicate(const String& argument);
/** Destructor
*/
virtual ~ExpressionPredicate();
//@}
/** @name Assignment
*/
//@{
/** Assignment operator
*/
ExpressionPredicate& operator = (const ExpressionPredicate& predicate);
/** Clear method
*/
virtual void clear();
//@}
/** @name Predicates
*/
//@{
/** Equality operator
*/
bool operator == (const ExpressionPredicate& predicate) const;
//@}
/** @name Accessors.
*/
//@{
/** evaluate this ExpressionPredicate by comparing its argument with
the selected predicate of atom.
@param atom the atom to compare with
*/
virtual bool operator () (const Atom& atom) const;
/** set the Argument of this ExpressionPredicate
@param argument the string to use for this predicate
*/
virtual void setArgument(const String& argument);
/** Get the argument of an ExpressionPredicate
@return the argument of the expression
*/
const String& getArgument() const;
//@}
protected:
/*_ The argument of the predicate
*/
String argument_;
};
}
#endif // BALL_KERNEL_EXPRESSIONPREDICATE_H
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