/// <summary>
/// Validate a 'treat as' expression.
/// </summary>
/// <param name="taexp">
/// is the expression. </param>
/// <returns> null. </returns>
public virtual object visit(TreatAsExpr taexp)
{
printBinExpr("TREATAS", taexp);
return(null);
}
/// <param name="taexp">
/// is the treat as expression. </param>
/// <returns> a taexp. </returns>
public virtual object visit(TreatAsExpr ex)
{
ex.left().accept(this);
ex.right().accept(this);
return(null);
}
