44 lines
1,013 B
Java
44 lines
1,013 B
Java
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/** Afficheur infixe, complètement parenthésé, d'une expression arithmétique.
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*
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* @author Xavier Crégut
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* @version $Revision$
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*/
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public class AfficheurPostfixe implements VisiteurExpression<String> {
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public String visiterAccesVariable(AccesVariable v) {
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return v.getNom();
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}
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public String visiterConstante(Constante c) {
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return String.valueOf(c.getValeur());
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}
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public String visiterExpressionBinaire(ExpressionBinaire e) {
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return e.getOperandeGauche().accepter(this)
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+ " " + e.getOperandeDroite().accepter(this)
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+ " " + e.getOperateur().accepter(this);
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}
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public String visiterAddition(Addition a) {
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return "+";
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}
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public String visiterSoustraction(Soustraction a) {
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return "-";
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}
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public String visiterMultiplication(Multiplication m) {
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return "*";
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}
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public String visiterExpressionUnaire(ExpressionUnaire e) {
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return e.getOperande().accepter(this)
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+ " " + e.getOperateur().accepter(this);
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}
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public String visiterNegation(Negation n) {
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return "~";
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}
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}
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