update boost

linx64/include/boost/qvm/enable_if.hpp

@@ -1,24 +1,127 @@
-//Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.
+#ifndef BOOST_QVM_ENABLE_IF_HPP_INCLUDED
+#define BOOST_QVM_ENABLE_IF_HPP_INCLUDED
 
-//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)
+// Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
 
-#ifndef UUID_A4FA0794391911DF85A6622B56D89593
-#define UUID_A4FA0794391911DF85A6622B56D89593
+// 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)
 
-#include <boost/utility/enable_if.hpp>
+// Boost enable_if library
 
-namespace
-boost
-    {
-    namespace
-    qvm
-        {
-        using boost::enable_if;
-        using boost::enable_if_c;
-        using boost::lazy_enable_if;
-        using boost::lazy_enable_if_c;
-        }
-    }
+// Copyright 2003 (c) The Trustees of Indiana University.
+
+//    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
+//             Jeremiah Willcock (jewillco at osl.iu.edu)
+//             Andrew Lumsdaine (lums at osl.iu.edu)
+
+namespace boost { namespace qvm {
+
+  template<typename T, typename R=void>
+  struct enable_if_has_type
+  {
+    typedef R type;
+  };
+
+  template <bool B, class T = void>
+  struct enable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct enable_if_c<false, T> {};
+
+  template <class Cond, class T = void>
+  struct enable_if : public enable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_enable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_enable_if_c<false, T> {};
+
+  template <class Cond, class T>
+  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
+
+
+  template <bool B, class T = void>
+  struct disable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct disable_if_c<true, T> {};
+
+  template <class Cond, class T = void>
+  struct disable_if : public disable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_disable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_disable_if_c<true, T> {};
+
+  template <class Cond, class T>
+  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
+
+////////////////////////////////////////////////
+
+  // The types below are a copy of the original types above, to workaround MSVC-12 bugs.
+
+  template<typename T, typename R=void>
+  struct enable_if_has_type2
+  {
+    typedef R type;
+  };
+
+  template <bool B, class T = void>
+  struct enable_if_c2 {
+    typedef T type;
+  };
+
+  template <class T>
+  struct enable_if_c2<false, T> {};
+
+  template <class Cond, class T = void>
+  struct enable_if2 : public enable_if_c2<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_enable_if_c2 {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_enable_if_c2<false, T> {};
+
+  template <class Cond, class T>
+  struct lazy_enable_if2 : public lazy_enable_if_c2<Cond::value, T> {};
+
+
+  template <bool B, class T = void>
+  struct disable_if_c2 {
+    typedef T type;
+  };
+
+  template <class T>
+  struct disable_if_c2<true, T> {};
+
+  template <class Cond, class T = void>
+  struct disable_if2 : public disable_if_c2<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_disable_if_c2 {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_disable_if_c2<true, T> {};
+
+  template <class Cond, class T>
+  struct lazy_disable_if2 : public lazy_disable_if_c2<Cond::value, T> {};
+
+} }
 
 #endif