First half of support for N3657; heterogenous lookups for set/multiset

llvm-svn: 188241

1 files changed, 22 insertions, 0 deletions

diff --git a/libcxx/test/support/private_constructor.hpp b/libcxx/test/support/private_constructor.hpp
new file mode 100644
index 00000000000..3f6f0d3d0ed
--- /dev/null
+++ b/libcxx/test/support/private_constructor.hpp
@@ -0,0 +1,22 @@
+#ifndef __PRIVATE_CONSTRUCTOR__H
+#define __PRIVATE_CONSTRUCTOR__H
+
+#include <iostream>
+
+struct PrivateConstructor {
+
+    PrivateConstructor static make ( int v ) { return PrivateConstructor(v); }
+    int get () const { return val; }
+private:
+    PrivateConstructor ( int v ) : val(v) {}
+    int val;
+    };
+
+bool operator < ( const PrivateConstructor &lhs, const PrivateConstructor &rhs ) { return lhs.get() < rhs.get(); }
+
+bool operator < ( const PrivateConstructor &lhs, int rhs ) { return lhs.get() < rhs; }
+bool operator < ( int lhs, const PrivateConstructor &rhs ) { return lhs < rhs.get(); }
+
+std::ostream & operator << ( std::ostream &os, const PrivateConstructor &foo ) { return os << foo.get (); }
+
+#endif