/// <summary>
///
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static ABNF_Rule Parse(string value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
string[] name_value = value.Split(new[] { '=' }, 2);
if (name_value.Length != 2)
{
throw new ParseException("Invalid ABNF rule '" + value + "'.");
}
ABNF_Rule retVal = new ABNF_Rule(name_value[0].Trim(),
ABNF_Alternation.Parse(new StringReader(name_value[1])));
return(retVal);
}
/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
public static ABFN_Group Parse(StringReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// group = "(" *c-wsp alternation *c-wsp ")"
if (reader.Peek() != '(')
{
throw new ParseException("Invalid ABNF 'group' value '" + reader.ReadToEnd() + "'.");
}
// Eat "(".
reader.Read();
// TODO: *c-wsp
ABFN_Group retVal = new ABFN_Group();
// We reached end of stream, no closing ")".
if (reader.Peek() == -1)
{
throw new ParseException("Invalid ABNF 'group' value '" + reader.ReadToEnd() + "'.");
}
retVal.m_pAlternation = ABNF_Alternation.Parse(reader);
// We don't have closing ")".
if (reader.Peek() != ')')
{
throw new ParseException("Invalid ABNF 'group' value '" + reader.ReadToEnd() + "'.");
}
else
{
reader.Read();
}
return(retVal);
}
/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
public static ABNF_Option Parse(StringReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// option = "[" *c-wsp alternation *c-wsp "]"
if (reader.Peek() != '[')
{
throw new ParseException("Invalid ABNF 'option' value '" + reader.ReadToEnd() + "'.");
}
// Eat "[".
reader.Read();
// TODO: *c-wsp
ABNF_Option retVal = new ABNF_Option();
// We reached end of stream, no closing "]".
if (reader.Peek() == -1)
{
throw new ParseException("Invalid ABNF 'option' value '" + reader.ReadToEnd() + "'.");
}
retVal.m_pAlternation = ABNF_Alternation.Parse(reader);
// We don't have closing ")".
if (reader.Peek() != ']')
{
throw new ParseException("Invalid ABNF 'option' value '" + reader.ReadToEnd() + "'.");
}
else
{
reader.Read();
}
return(retVal);
}
