Remove unused or obsolete classes and files

beast/empty_base_optimization.h

@@ -0,0 +1,111 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2014, Howard Hinnant <howard.hinnant@gmail.com>,
+        Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_EMPTY_BASE_OPTIMIZATION_H_INCLUDED
+#define BEAST_EMPTY_BASE_OPTIMIZATION_H_INCLUDED
+
+#include <type_traits>
+#include <utility>
+
+namespace beast {
+
+namespace detail {
+
+template <class T>
+struct empty_base_optimization_decide
+    : std::integral_constant <bool,
+        std::is_empty <T>::value
+#ifdef __clang__
+        && !__is_final(T)
+#endif
+    >
+{
+};
+
+}
+
+//------------------------------------------------------------------------------
+
+template <
+    class T,
+    int UniqueID = 0,
+    bool ShouldDeriveFrom =
+        detail::empty_base_optimization_decide <T>::value
+>
+class empty_base_optimization : private T
+{
+public:
+    empty_base_optimization() = default;
+
+    empty_base_optimization(T const& t)
+        : T (t)
+    {}
+
+    empty_base_optimization(T&& t)
+        : T (std::move (t))
+    {}
+
+    T& member() noexcept
+    {
+        return *this;
+    }
+
+    T const& member() const noexcept
+    {
+        return *this;
+    }
+};
+
+//------------------------------------------------------------------------------
+
+template <
+    class T,
+    int UniqueID
+>
+class empty_base_optimization <T, UniqueID, false>
+{
+public:
+    empty_base_optimization() = default;
+
+    empty_base_optimization(T const& t)
+        : m_t (t)
+    {}
+
+    empty_base_optimization(T&& t)
+        : m_t (std::move (t))
+    {}
+
+    T& member() noexcept
+    {
+        return m_t;
+    }
+
+    T const& member() const noexcept
+    {
+        return m_t;
+    }
+
+private:
+    T m_t;
+};
+
+}
+
+#endif