//*
// * Throws a parser creation exception for an ambiguity. The
// * specified look-ahead set contains the token conflicts to be
// * reported.
// *
// * @param pattern the production pattern name
// * @param location the production pattern location, or null
// * @param set the look-ahead set with conflicts
// *
// * @throws ParserCreationException always thrown by this method
//
private void ThrowAmbiguityException(string pattern, string location, LookAheadSet @set)
{
ArrayList list = new ArrayList();
int[] initials = null;
// Find next token descriptions
initials = @set.GetInitialTokens();
for (int i = 0; i <= initials.Length - 1; i++)
{
list.Add(GetTokenDescription(initials[i]));
}
// Create exception
throw new ParserCreationException(ParserCreationException.ErrorType.INHERENT_AMBIGUITY, pattern, location, list);
}
//*
// * Throws a parse exception that matches the specified look-ahead
// * set. This method will take into account any initial matching
// * tokens in the look-ahead set.
// *
// * @param set the look-ahead set to match
// *
// * @throws ParseException always thrown by this method
//
private void ThrowParseException(LookAheadSet @set)
{
Token token = default(Token);
ArrayList list = new ArrayList();
int[] initials = null;
// Read tokens until mismatch
while (@set.IsNext(this, 1))
{
@set = @set.CreateNextSet(NextToken().Id);
}
// Find next token descriptions
initials = @set.GetInitialTokens();
for (int i = 0; i <= initials.Length - 1; i++)
{
list.Add(GetTokenDescription(initials[i]));
}
// Create exception
token = NextToken();
throw new ParseException(ParseException.ErrorType.UNEXPECTED_TOKEN, token.ToShortString(), list, token.StartLine, token.StartColumn);
}