GenericFeatures

Many lists/collections of objects are required. To ease development a general purpose list of pointers is available.

The base class for such a feature is,

class GenericFeature
{
public:
    virtual ~GenericFeature() {};
};

ASIDE --- note penalty of size by making this virtual --- do we care ?

And a feature list is

class FeatureList {
public:

friend class FeatureListIterator;
    
    FeatureList( int clustSize = 10 );
    virtual ~FeatureList();
    
    BOOL             add(GenericFeature *fea, const BOOL check = TRUE );
    BOOL             remove( const GenericFeature *fea );
    void             clear();
    BOOL             contains( const GenericFeature *fea ) const;
    GenericFeature * first() const;
    GenericFeature * operator[](int index) const;
    
    int              numElements() const;

private:
    GenericFeature** _features;
    FeatureList *    _next;
    int              _numElems;
    int              _clusterSize;
};

ASIDE ( I would like to see some of the above members protected - pjl )

A GoString is derived from a GenericFeature this allows

class StringCollection : public FeatureList
{
public:
    StringCollection( int clustSize = 10 ) : FeatureList(clustSize) {}

    GoString * first() const { return (GoString *)FeatureList::first(); }
    GoString * operator[](int index) const 
    {
        return (GoString *)FeatureList::operator[](index);
    }
};