)

var (
	errInvalidASTNode    = errors.New("invalid AST Node")
	errExpectedBool      = errors.New("expected bool")
	errLikeNonStrArg     = errors.New("LIKE clause requires string arguments")
	errLikeInvalidEscape = errors.New("LIKE clause has invalid ESCAPE character")
	errNotImplemented    = errors.New("not implemented")
)

// AST Node Evaluation functions
//

     and conditions of the license they choose before applying it.
     Licensors should also secure all rights necessary before
     applying our licenses so that the public can reuse the
     material as expected. Licensors should clearly mark any
     material not subject to the license. This includes other CC-
     licensed material, or material used under an exception or

			return convertAccessError(err, errVolumeAccessDenied)
		}
	}

	// Use a small block size to start sending quickly
	w := newMetacacheWriter(wr, 16<<10)
	w.reuseBlocks = true // We are not sharing results, so reuse buffers.
	defer w.Close()
	out, err := w.stream()
	if err != nil {
		return err
	}
	defer xioutil.SafeClose(out)
	var objsReturned int

	objReturned := func(metadata []byte) {
		if opts.Limit <= 0 {

		state = madmin.DriveStatePermission
	case errors.Is(err, errFaultyDisk):
		state = madmin.DriveStateFaulty
	case err == nil:
		state = madmin.DriveStateOk
	default:
		state = fmt.Sprintf("%s (cause: %s)", madmin.DriveStateUnknown, err)
	}

	return
}

func getOnlineOfflineDisksStats(disksInfo []madmin.Disk) (onlineDisks, offlineDisks madmin.BackendDisks) {
	onlineDisks = make(madmin.BackendDisks)

// statement
type SelectExpression struct {
	All         bool                 `parser:"  @\"*\""`
	Expressions []*AliasedExpression `parser:"| @@ { \",\" @@ }"`
}

// TableExpression represents the FROM clause
type TableExpression struct {
	Table *JSONPath `parser:"@@"`
	As    string    `parser:"( \"AS\"? @Ident )?"`
}

// JSONPathElement represents a keypath component
type JSONPathElement struct {

		statusCode: 400,
		cause:      err,
	}
}

func errParseExpectedWhenClause(err error) *s3Error {
	return &s3Error{
		code:       "ParseExpectedWhenClause",
		message:    "Did not find the expected WHEN clause in the SQL expression. CASE is not supported.",
		statusCode: 400,
		cause:      err,
	}
}

func errParseUnsupportedToken(err error) *s3Error {

}

// Close closer interface to close the underlying closer
func (w *DeadlineWriter) Close() error {
	err := w.WriteCloser.Close()
	w.err = err
	if err == nil {
		w.err = errors.New("we are closed") // Avoids any reuse on the Write() side.
	}
	return err
}

// LimitWriter implements io.WriteCloser.
//
// This is implemented such that we want to restrict
// an enscapsulated writer upto a certain length

		m.Set(name, metric.Value, labels...)
	}
}

// MetricsLoaderFn - represents a function to load metrics from the
// metricsCache.
//
// Note that returning an error here will cause the Metrics handler to return a
// 500 Internal Server Error.
type MetricsLoaderFn func(context.Context, MetricValues, *metricsCache) error

// JoinLoaders - joins multiple loaders into a single loader. The returned

			return ep, fmt.Errorf("empty or root path is not supported in URL endpoint")
		}

		// On windows having a preceding SlashSeparator will cause problems, if the
		// command line already has C:/<export-folder/ in it. Final resulting
		// path on windows might become C:/C:/ this will cause problems
		// of starting minio server properly in distributed mode on windows.
		// As a special case make sure to trim the separator.

type VersionPurgeStatusType string

const (
	// Pending - versioned delete replication is pending.
	Pending VersionPurgeStatusType = "PENDING"

	// Complete - versioned delete replication is now complete, erase version on disk.
	Complete VersionPurgeStatusType = "COMPLETE"

	// Failed - versioned delete replication failed.
	Failed VersionPurgeStatusType = "FAILED"
)

// Empty returns true if purge status was not set.