X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fparsermode.h;h=9d47ae422f8753bfb7a7a16f401e40b615a43729;hb=daca21051927eabee098e422fe5a0990acacfb96;hp=491647e4b09a0b9c307d4f4aa32a6078403ed9a5;hpb=3b78eeb8b92dc3524d6a0456b4daf0a0f3dbf813;p=libs%2Fdatafile.git

diff --git a/source/parsermode.h b/source/parsermode.h
index 491647e..9d47ae4 100644
--- a/source/parsermode.h
+++ b/source/parsermode.h
@@ -1,6 +1,7 @@
 #ifndef MSP_DATAFILE_PARSERMODE_H_
 #define MSP_DATAFILE_PARSERMODE_H_
 
+#include <msp/core/noncopyable.h>
 #include "statement.h"
 
 namespace Msp {
@@ -13,7 +14,7 @@ class LoaderAction;
 /**
 Base class for parse modes.
 */
-class ParserMode
+class ParserMode: private NonCopyable
 {
 protected:
 	Input &in;
@@ -26,7 +27,7 @@ public:
 	virtual Statement parse() = 0;
 	virtual void process_control_statement(const Statement &) { }
 
-	virtual const StatementKey *peek(unsigned) { return 0; }
+	virtual const StatementKey *peek(unsigned) { return nullptr; }
 	virtual bool parse_and_load(unsigned, Loader &, const LoaderAction &) { return false; }
 };