public Stmt VisitPrintLine(Stmt.PrintLine stmt)
{
if (stmt.expr != null)
{
if (stmt.expr is Expression.Literal || stmt.expr is Expression.LexemeTypeLiteral)
{
var lexemeTypeLiteral = Evaluate(stmt.expr) as Expression.LexemeTypeLiteral;
Console.WriteLine(lexemeTypeLiteral.Literal);
return(new Stmt.PrintLine());
}
if (stmt.expr is Expression.Variable)
{
var variable = LookUpVariable(stmt.expr.Name, stmt.expr);
if (variable != null)
{
if (variable is Expression.LexemeTypeLiteral)
{
Console.WriteLine(((Expression.LexemeTypeLiteral)variable).Literal);
}
}
}
}
return(new Stmt.PrintLine());
}
public object VisitPrintLine(Stmt.PrintLine stmt)
{
if (stmt == null || stmt.expr == null)
{
throw new ArgumentNullException("stmt and or expressoin are null");
}
Resolve(stmt.expr);
return(new Stmt.PrintLine());
}
public Stmt VisitPrintLine(Stmt.PrintLine stmt)
{
throw new NotImplementedException();
}
