Preparation for V5.

include/boost/regex/v5/protected_call.hpp

@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to 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)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         basic_regex_creator.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class basic_regex_creator which fills in
+  *                the data members of a regex_data object.
+  */
+
+#ifndef BOOST_REGEX_V4_PROTECTED_CALL_HPP
+#define BOOST_REGEX_V4_PROTECTED_CALL_HPP
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+class BOOST_REGEX_DECL abstract_protected_call
+{
+public:
+   bool BOOST_REGEX_CALL execute()const;
+   // this stops gcc-4 from complaining:
+   virtual ~abstract_protected_call(){}
+private:
+   virtual bool call()const = 0;
+};
+
+template <class T>
+class concrete_protected_call
+   : public abstract_protected_call
+{
+public:
+   typedef bool (T::*proc_type)();
+   concrete_protected_call(T* o, proc_type p)
+      : obj(o), proc(p) {}
+private:
+   bool call()const BOOST_OVERRIDE;
+   T* obj;
+   proc_type proc;
+};
+
+template <class T>
+bool concrete_protected_call<T>::call()const
+{
+   return (obj->*proc)();
+}
+
+}
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif