Set.java

package org.jerlang.stdlib.ets;

import org.jerlang.type.Atom;
import org.jerlang.type.List;
import org.jerlang.type.Term;

import com.googlecode.totallylazy.Option;
import com.googlecode.totallylazy.collections.PersistentSet;
import com.googlecode.totallylazy.collections.PersistentSortedSet;

public class Set extends Table {

    private PersistentSet<Term> set;

    public Set(Access access, Atom name, boolean named_table, boolean compressed) {
        super(Type.SET, access, name, named_table, compressed);
        set = PersistentSortedSet.constructors.sortedSet();
    }

    @Override
    public List lookup(Term key) {
        Option<Term> result = set.lookup(key);
        if (result.isEmpty()) {
            return List.nil;
        } else {
            return List.of(result.get());
        }
    }

}