// ExpVisitor.java: based on Visitor code, p. 96
// (in Modern Compiler Implementation in Java)
// revised by RWH, 2022: use void visitors because this
//      matches SableCC better

public interface ExpVisitor
{
  public int result();          // final result of applying visitor
  public void visit(PlusExp n);
  public void visit(MinusExp n);
  public void visit(TimesExp n);
  public void visit(DivideExp n);
  public void visit(Identifier n);
  public void visit(IntegerLiteral n);
}