HashIdDefClasse.java

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package plp.orientadaObjetos1.memoria.colecao;

import java.util.Enumeration;
import java.util.Hashtable;

import plp.orientadaObjetos1.expressao.leftExpression.Id;
import plp.orientadaObjetos1.memoria.DefClasse;

public class HashIdDefClasse {

    private Hashtable tabela;

    public HashIdDefClasse() {
        this.tabela = new Hashtable();
    }

    public DefClasse put(Id id, DefClasse defClasse) {
        Object result = tabela.put(id, defClasse);
        if (result == null) {
            return null;
        }
        else {
            return (DefClasse) result;
        }
    }

    public DefClasse get(Id id) {
        Object result = tabela.get(id);
        if (result == null) {
            return null;
        }
        else {
            return (DefClasse) result;
        }
    }

    public Enumeration keys() {
        return tabela.keys();
    }
}

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