/// <summary>
/// Validate a castable expression.
/// </summary>
/// <param name="cexp">
/// is the expression. </param>
/// <returns> null. </returns>
public virtual object visit(CastableExpr cexp)
{
printBinExpr("CASTABLE", cexp);
return(null);
}
/// <param name="cexp">
/// is the castable expression. </param>
/// <returns> cexp. </returns>
public virtual object visit(CastableExpr cexp)
{
cexp.left().accept(this);
cexp.right().accept(this);
return(null);
}
