protected override bool InternalMatch(ParserState p)
{
if (p == null)
{
throw new ArgumentNullException(nameof(p));
}
Rule r = Rules[0];
if (!r.Match(p))
{
ParsingException ex = new ParsingException(p.Peek(), r, p);
throw ex;
}
return(true);
}
public ParseNode Parse(Stream stream)
{
Rule parseRule = Grammar.file;
string text;
using (TextReader reader = new StreamReader(stream))
{
text = reader.ReadToEnd();
}
ParserState state = new ParserState(text);
try
{
Succeeded = parseRule.Match(state) && state.AtEndOfInput();
}
catch (ParsingException e)
{
state.ForceCompletion();
Succeeded = false;
Exception = e;
}
return(state.GetRoot());
}