exp
Class NilSexp

java.lang.Object
  |
  +--exp.Sexp
        |
        +--exp.AtomSexp
              |
              +--exp.NilSexp

Direct Known Subclasses:

EmptyList

public class NilSexp

extends AtomSexp

NilSexp Classe per le espressioni atomiche nulle

Version:

7/12/1999

Author:

Marco Chiesi

Fields inherited from class exp.Sexp

EOF, FALSE, NIL, TRUE

Constructor Summary

NilSexp()

Method Summary

void	accept(SexpVisitor v) Specifica di un visitor
boolean	isEq(Sexp e) Controlla l'uguaglianza tra espressioni
boolean	isList() Controlla se e' una lista
boolean	isNull() Controlla se la lista e' vuota
java.lang.String	toSimpleString() Conversione a stringa
java.lang.String	toString()

Methods inherited from class exp.AtomSexp

car, cdr, isAtom

Methods inherited from class exp.Sexp

accept2, append, assoc, atom, caar, cadr, car, cdar, cddr, cdr, cons, dup, eq, isAnAtom, isAtom, isEq, isList, isNull, isPair, length, list1, list2, list3, list4, list5, listArray, member, pairList, selfEvaluating, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NilSexp

public NilSexp()

Method Detail

accept

public void accept(SexpVisitor v)

Description copied from class: Sexp

Specifica di un visitor

Overrides:

accept in class Sexp

isNull

public boolean isNull()

Description copied from class: Sexp

Controlla se la lista e' vuota

Overrides:

isNull in class Sexp

isList

public boolean isList()

Description copied from class: Sexp

Controlla se e' una lista

Overrides:

isList in class AtomSexp

isEq

public boolean isEq(Sexp e)

Description copied from class: Sexp

Controlla l'uguaglianza tra espressioni

Overrides:

isEq in class Sexp

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toSimpleString

public java.lang.String toSimpleString()

Description copied from class: Sexp

Conversione a stringa

Overrides:

toSimpleString in class Sexp