libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8

test/utilities/tuple/tuple.tuple/MoveOnly.h

@@ -0,0 +1,41 @@
+#ifndef MOVEONLY_H
+#define MOVEONLY_H
+
+#ifdef _LIBCPP_MOVE
+
+#include <cstddef>
+#include <functional>
+
+class MoveOnly
+{
+    MoveOnly(const MoveOnly&);
+    MoveOnly& operator=(const MoveOnly&);
+
+    int data_;
+public:
+    MoveOnly(int data = 1) : data_(data) {}
+    MoveOnly(MoveOnly&& x)
+        : data_(x.data_) {x.data_ = 0;}
+    MoveOnly& operator=(MoveOnly&& x)
+        {data_ = x.data_; x.data_ = 0; return *this;}
+
+    int get() const {return data_;}
+
+    bool operator==(const MoveOnly& x) const {return data_ == x.data_;}    
+    bool operator< (const MoveOnly& x) const {return data_ <  x.data_;}    
+};
+
+namespace std {
+
+template <>
+struct hash<MoveOnly>
+    : public std::unary_function<MoveOnly, std::size_t>
+{
+    std::size_t operator()(const MoveOnly& x) const {return x.get();}
+};
+
+}
+
+#endif
+
+#endif