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

        protected void callable_parameter_declaration_list(
		ParameterDeclarationCollection c
	)
        {
            bool varArgs = false;

            try {      // for error handling
            {
                switch ( LA(1) )
                {
                case CALLABLE:
                case CHAR:
                case REF:
                case THEN:
                case LPAREN:
                case ID:
                case MULTIPLY:
                case SPLICE_BEGIN:
                {
                    varArgs=callable_parameter_declaration(c);
                    {    // ( ... )*
                        for (;;)
                        {
                            if (((LA(1)==COMMA))&&(!varArgs))
                            {
                                {
                                    match(COMMA);
                                    varArgs=callable_parameter_declaration(c);
                                }
                            }
                            else
                            {
                                goto _loop222_breakloop;
                            }

                        }
            _loop222_breakloop:						;
                    }    // ( ... )*
                    if (0==inputState.guessing)
                    {
                        c.HasParamArray = varArgs;
                    }
                    break;
                }
                case RPAREN:
                {
                    break;
                }
                default:
                {
                    throw new NoViableAltException(LT(1), getFilename());
                }
                 }
            }
            }
            catch (RecognitionException ex)
            {
            if (0 == inputState.guessing)
            {
                reportError(ex, "callable_parameter_declaration_list");
                recover(ex,tokenSet_50_);
            }
            else
            {
                throw ex;
            }
            }
        }