public Token Peek()
{
if (Lookahead == null)
{
if (!TokenIterator.MoveNext())
return null;
Lookahead = TokenIterator.Current;
}
return Lookahead;
}
public Token NextToken()
{
if (Lookahead != null)
{
var lh = Lookahead;
Lookahead = null;
return lh;
}
else
{
if (!TokenIterator.MoveNext())
return null;
return TokenIterator.Current;
}
}