X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=inline;f=source%2Fmeta.h;fp=source%2Fmeta.h;h=ac6ec1be2029e18b0a22c8f692be796687f2e03d;hb=41e78ee91ca058ead90fa1c8ee4339d2ef1b0f31;hp=0000000000000000000000000000000000000000;hpb=d93f320a4853afa6d1c25d9b546600807cfee37d;p=libs%2Fdatafile.git

diff --git a/source/meta.h b/source/meta.h
new file mode 100644
index 0000000..ac6ec1b
--- /dev/null
+++ b/source/meta.h
@@ -0,0 +1,24 @@
+#ifndef MSP_DATAFILE_META_H_
+#define MSP_DATAFILE_META_H_
+
+#include <msp/core/meta.h>
+
+namespace Msp {
+namespace DataFile {
+
+/**
+Helper struct to determine whether a Loader has a Collection typedef.
+*/
+struct CheckCollectionType: Sfinae
+{
+	template<typename T>
+	static Yes f(typename T::Collection *);
+	using Sfinae::f;
+};
+
+template<typename T> struct NeedsCollection: Sfinae::Evaluate<CheckCollectionType, T> { };
+
+} // namespace DataFile
+} // namespace Msp
+
+#endif