X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fparsermode.h;h=339bdb78e4bc66536dab675a0517fc748a9a5824;hb=215e719d0ef85f748898660d15d01e77ac551de9;hp=824525d66aeeddaa0347e1848b18f409d8e82f91;hpb=27630d44298cb67e075c166f4421288cc8ca117e;p=libs%2Fdatafile.git

diff --git a/source/parsermode.h b/source/parsermode.h
index 824525d..339bdb7 100644
--- a/source/parsermode.h
+++ b/source/parsermode.h
@@ -15,17 +15,20 @@ namespace DataFile {
 
 class Input;
 
+/**
+Base class for parse modes.
+*/
 class ParserMode
 {
 protected:
 	Input ∈
-	std::string src;
+	const std::string &src;
 
 	ParserMode(Input &i, const std::string &s): in(i), src(s) { }
 public:
 	virtual ~ParserMode() { }
 
-	virtual Statement parse() =0;
+	virtual Statement parse() = 0;
 };
 
 } // namespace DataFile