/// <summary>
/// Reads Any token or none if the token stream reached the end
/// </summary>
/// <param name="tokens">Token Stream</param>
/// <param name="start">Start Index</param>
/// <param name="result">Specified Tokens</param>
/// <returns></returns>
public static bool ReadAnyOrNone(List <IHlToken> tokens, int start, out IHlToken result)
{
if (start >= 0 && tokens.Count > start)
{
result = tokens[start];
return(true);
}
result = new EofToken();
return(false);
}
/// <summary>
/// reads one or none token of the accepted type
/// </summary>
/// <param name="tokens">Token Stream</param>
/// <param name="start">Start index</param>
/// <param name="type">Token FunctionType</param>
/// <param name="result">Read Token</param>
/// <returns>True if token was read.</returns>
public static bool ReadOneOrNone(List <IHlToken> tokens, int start, HlTokenType type, out IHlToken result)
{
if (start >= 0 && tokens.Count > start)
{
result = tokens[start];
if (tokens[start].Type == type)
{
return(true);
}
return(false);
}
result = new EofToken();
return(false);
}