Category : C++ Source Code
Archive   : CHARTP10.ZIP
Filename : TREE.H

// Copyright 1992, David Perelman-Hall & Jamshid Afshar

#ifndef TREE_H
#define TREE_H

#include "category.h"

class Tree;
typedef Tree *Tptr;
const int MAX_CHILDREN = 5;

class Tree {
friend ostream& operator << ( ostream& os, const Tree& tree );
private:
Category _cat;
Tptr _children[MAX_CHILDREN];
int _num_children;
public:
//constructor
Tree( const Category& cat );

//coppy constructor
Tree( const Tree &tree );

//operator =
void operator = ( const Tree &tree );

bool isvalid() const;

//operator ==
bool operator == ( const Tree &tree ) const;

//operator !=
bool operator != ( const Tree &tree ) const{
return !(*this == tree);
}

//return category
const Category& cat() const {
return _cat;
}

//destructor
~Tree();

//clear
void clear();

//add
void add_child( const Tree &tree );

//get children in current tree
Category_Sequence get_children() const;

};

#endif