private static IEnumerable <ExpressionToken> GetTokens(
IList <Char> ExpressionChars)
{
ExpressionToken prevToken = null;
for (var i = 0; i < ExpressionChars.Count; i++)
{
ExpressionToken token = TokenSingleGetter.GetNextToken(ExpressionChars, i, prevToken);
if (token == null)
{
continue;
}
if (token.TokenType != TokenType.WHITESPACE)
{
yield return(token);
}
Int32 finalTokenLenght = token.GetFinalTokenLength();
if (finalTokenLenght > 0)
{
i += finalTokenLenght;
i -= 1;
}
prevToken = token;
}
}