ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/regex/v4/protected_call.hpp b/include/ndnboost/regex/v4/protected_call.hpp
new file mode 100644
index 0000000..88615de
--- /dev/null
+++ b/include/ndnboost/regex/v4/protected_call.hpp
@@ -0,0 +1,81 @@
+/*
+ *
+ * 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 <ndnboost/version.hpp>
+ * DESCRIPTION: Declares template class basic_regex_creator which fills in
+ * the data members of a regex_data object.
+ */
+
+#ifndef NDNBOOST_REGEX_V4_PROTECTED_CALL_HPP
+#define NDNBOOST_REGEX_V4_PROTECTED_CALL_HPP
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+# include NDNBOOST_ABI_PREFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace ndnboost{
+namespace re_detail{
+
+class NDNBOOST_REGEX_DECL abstract_protected_call
+{
+public:
+ bool NDNBOOST_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:
+ virtual bool call()const;
+ T* obj;
+ proc_type proc;
+};
+
+template <class T>
+bool concrete_protected_call<T>::call()const
+{
+ return (obj->*proc)();
+}
+
+}
+} // namespace ndnboost
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+# include NDNBOOST_ABI_SUFFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif