package edu.ucsb.cs.jicos.examples.fastfibonacci;

import edu.ucsb.cs.jicos.services.*;

/**
 *
 * @author  Peter Cappello
 * @version 1
 */
final class Atom extends Task 
{        
    private int n;
    
    Atom( int n ) { this.n = n; }
    
    public Object execute( Environment environment )
    {
        return new Integer( f(n) );        
    }
    
    public boolean isAtomic( Environment environment ) { return true; }
    
    private int f( int n ) 
    { 
        return ( n < 2 ) ? 1 : f( n - 1 ) + f( n - 2 ); 
    }
}