#define MSP_DATAFILE_WRITER_H_
#include <map>
+#include <msp/core/noncopyable.h>
#include <msp/io/base.h>
#include "output.h"
namespace Msp {
namespace DataFile {
-class Statement;
+struct Statement;
class WriterMode;
/**
Frontend for writing data.
*/
-class Writer
+class Writer: private NonCopyable
{
private:
Output out;