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+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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)
+
+#ifndef BOOST_PROCESS_DETAIL_HANDLER_BASE_HPP
+#define BOOST_PROCESS_DETAIL_HANDLER_BASE_HPP
+
+#include <system_error>
+
+namespace boost { namespace process { namespace detail {
+
+template<template <class> class Template>
+struct make_handler_t
+{
+ constexpr make_handler_t() {}
+ template<typename Handler>
+ constexpr Template<Handler> operator()(Handler handler) const {return Template<Handler>(handler);}
+ template<typename Handler>
+ constexpr Template<Handler> operator= (Handler handler) const {return Template<Handler>(handler);}
+ template<typename Handler>
+ constexpr Template<Handler> operator+=(Handler handler) const {return Template<Handler>(handler);}
+};
+
+
+struct handler_base
+{
+ using resource_type = void;
+
+ template <class Executor>
+ void on_setup(Executor&) const {}
+
+ template <class Executor>
+ void on_error(Executor&, const std::error_code &) const {}
+
+ template <class Executor>
+ void on_success(Executor&) const {}
+
+};
+
+
+}}}
+
+#endif