整理

include/boost/core/checked_delete.hpp

@@ -0,0 +1,97 @@
+#ifndef BOOST_CORE_CHECKED_DELETE_HPP
+#define BOOST_CORE_CHECKED_DELETE_HPP
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <boost/config.hpp>
+
+//
+//  boost/checked_delete.hpp
+//
+//  Copyright (c) 2002, 2003 Peter Dimov
+//  Copyright (c) 2003 Daniel Frey
+//  Copyright (c) 2003 Howard Hinnant
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/core/doc/html/core/checked_delete.html for documentation.
+//
+
+namespace boost
+{
+
+// verify that types are complete for increased safety
+
+template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
+{
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410L
+
+    static_assert( sizeof(T) != 0, "Type must be complete" );
+
+#else
+
+    typedef char type_must_be_complete[ sizeof(T) ];
+    (void) sizeof(type_must_be_complete);
+
+#endif
+
+    delete x;
+}
+
+template<class T> inline void checked_array_delete(T * x) BOOST_NOEXCEPT
+{
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410L
+
+    static_assert( sizeof(T) != 0, "Type must be complete" );
+
+#else
+
+    typedef char type_must_be_complete[ sizeof(T) ];
+    (void) sizeof(type_must_be_complete);
+
+#endif
+
+    delete [] x;
+}
+
+// Block unintended ADL
+namespace checked_deleters
+{
+
+template<class T> struct checked_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+
+    void operator()(T * x) const BOOST_NOEXCEPT
+    {
+        // boost:: disables ADL
+        boost::checked_delete(x);
+    }
+};
+
+template<class T> struct checked_array_deleter
+{
+    typedef void result_type;
+    typedef T * argument_type;
+
+    void operator()(T * x) const BOOST_NOEXCEPT
+    {
+        boost::checked_array_delete(x);
+    }
+};
+
+} // namespace checked_deleters
+
+using checked_deleters::checked_deleter;
+using checked_deleters::checked_array_deleter;
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_CORE_CHECKED_DELETE_HPP