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Jason is a fully-fledged interpreter for an extended version of AgentSpeak, a BDI agent-oriented logic programming language.

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package jason.asSyntax;

import java.util.Iterator;
import java.util.List;

/**
 * The interface for lists of the AgentSpeak language
 *  
 * @opt nodefillcolor lightgoldenrodyellow
 * 
 * @author Jomi
 */
public interface ListTerm extends java.util.List, Term {
    
    public void setTerm(Term t);
    public Term getTerm();
    public void setNext(Term l);
    public ListTerm getNext();
    
    public boolean isEnd();
    
    public boolean isTail();
    public VarTerm getTail();
    public void setTail(VarTerm v);
    public ListTerm getLast();
    public ListTerm getPenultimate();
    public Term     removeLast();
    public ListTerm append(Term t);
    public ListTerm insert(Term t);

    public ListTerm concat(ListTerm lt);
    public ListTerm reverse();
    
    public ListTerm union(ListTerm lt);
    public ListTerm intersection(ListTerm lt);
    public ListTerm difference(ListTerm lt);
    
    /** returns all subsets that take k elements of this list */ 
    public Iterator> subSets(int k);

    
    public Iterator listTermIterator();
    public List getAsList();

    /** clone the list term */
    public ListTerm cloneLT();
    
    /** make a shallow copy of the list (terms are not cloned, only the structure) */
    public ListTerm cloneLTShallow();
}