private bool TryGetLexem(out Lexem lexem)
{
StringBuilder sb = new StringBuilder();
char symbol;
while (position < source.Length)
{
symbol = source[position];
sb.Append(symbol);
if (specials.ContainsKey(symbol))
{
position += (sb.Length == 0) ? 1 : 0;
lexem = new Lexem(sb.ToString(), position);
return true;
}
position += 1;
}
lexem = null;
return false;
}
private bool TryGetSpecial(out Lexem lexem)
{
throw new NotImplementedException();
}
public bool GetNextLexem(out Lexem lexem)
{
return TryGetSpecial(out lexem) || TryGetLexem(out lexem);
}