Boo.Lang.Parser.BooParserBase.base_types C# (CSharp) Method

        protected void base_types(
		TypeReferenceCollection container
	)
        {
            TypeReference tr = null;

            try {      // for error handling
            match(LPAREN);
            {
                switch ( LA(1) )
                {
                case CALLABLE:
                case CHAR:
                case THEN:
                case LPAREN:
                case ID:
                case SPLICE_BEGIN:
                {
                    tr=type_reference();
                    if (0==inputState.guessing)
                    {
                        container.Add(tr);
                    }
                    {    // ( ... )*
                        for (;;)
                        {
                            if ((LA(1)==COMMA))
                            {
                                match(COMMA);
                                tr=type_reference();
                                if (0==inputState.guessing)
                                {
                                    container.Add(tr);
                                }
                            }
                            else
                            {
                                goto _loop94_breakloop;
                            }

                        }
            _loop94_breakloop:						;
                    }    // ( ... )*
                    break;
                }
                case RPAREN:
                {
                    break;
                }
                default:
                {
                    throw new NoViableAltException(LT(1), getFilename());
                }
                 }
            }
            match(RPAREN);
            }
            catch (RecognitionException ex)
            {
            if (0 == inputState.guessing)
            {
                reportError(ex, "base_types");
                recover(ex,tokenSet_51_);
            }
            else
            {
                throw ex;
            }
            }
        }