Refactor error headers:

The WebSocket error header file declarations are
reorganized to make it easier to move function
definitions into their own translation unit.

include/boost/beast/websocket/detail/error.hpp

@@ -0,0 +1,72 @@
+//
+// Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// 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)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+#ifndef BOOST_BEAST_WEBSOCKET_DETAIL_ERROR_IPP
+#define BOOST_BEAST_WEBSOCKET_DETAIL_ERROR_IPP
+
+#include <boost/beast/core/error.hpp>
+#include <boost/beast/core/string.hpp>
+
+namespace boost {
+
+namespace beast {
+namespace websocket {
+enum class error;
+} // websocket
+} // beast
+
+namespace system {
+template<>
+struct is_error_code_enum<beast::websocket::error>
+{
+    static bool const value = true;
+};
+} // system
+
+namespace beast {
+namespace websocket {
+namespace detail {
+
+class error_codes : public error_category
+{
+    template<class = void>
+    string_view
+    get_message(error ev) const;
+
+public:
+    const char*
+    name() const noexcept override
+    {
+        return "boost.beast.websocket";
+    }
+
+    std::string
+    message(int ev) const override
+    {
+        return get_message(static_cast<error>(ev)).to_string();
+    }
+};
+
+} // detail
+
+inline
+error_code
+make_error_code(error e)
+{
+    static detail::error_codes const cat{};
+    return error_code{static_cast<
+        std::underlying_type<error>::type>(e), cat};
+}
+
+} // websocket
+} // beast
+
+} // boost
+
+#endif

include/boost/beast/websocket/error.hpp

@@ -10,6 +10,7 @@
 #ifndef BOOST_BEAST_WEBSOCKET_ERROR_HPP
 #define BOOST_BEAST_WEBSOCKET_ERROR_HPP
 
+#include <boost/beast/websocket/detail/error.hpp>
 #include <boost/beast/core/detail/config.hpp>
 #include <boost/beast/core/error.hpp>
 

include/boost/beast/websocket/impl/error.ipp

@@ -11,84 +11,27 @@
 #define BOOST_BEAST_WEBSOCKET_IMPL_ERROR_IPP
 
 namespace boost {
-
-namespace system {
-template<>
-struct is_error_code_enum<beast::websocket::error>
-{
-    static bool const value = true;
-};
-} // system
-
 namespace beast {
 namespace websocket {
 namespace detail {
 
-class websocket_error_category : public error_category
+template<class>
+string_view
+error_codes::
+get_message(error ev) const
 {
-public:
-    const char*
-    name() const noexcept override
+    switch(ev)
     {
-        return "boost.beast.websocket";
+    default:
+    case error::failed: return "WebSocket connection failed due to a protocol violation";
+    case error::closed: return "WebSocket connection closed normally";
+    case error::handshake_failed: return "WebSocket upgrade handshake failed";
+    case error::buffer_overflow: return "WebSocket dynamic buffer overflow";
+    case error::partial_deflate_block: return "WebSocket partial deflate block";
     }
-
-    std::string
-    message(int ev) const override
-    {
-        switch(static_cast<error>(ev))
-        {
-        default:
-        case error::failed: return "WebSocket connection failed due to a protocol violation";
-        case error::closed: return "WebSocket connection closed normally";
-        case error::handshake_failed: return "WebSocket upgrade handshake failed";
-        case error::buffer_overflow: return "WebSocket dynamic buffer overflow";
-        case error::partial_deflate_block: return "WebSocket partial deflate block";
-        }
-    }
-
-    error_condition
-    default_error_condition(int ev) const noexcept override
-    {
-        return error_condition(ev, *this);
-    }
-
-    bool
-    equivalent(int ev,
-        error_condition const& condition
-            ) const noexcept override
-    {
-        return condition.value() == ev &&
-            &condition.category() == this;
-    }
-
-    bool
-    equivalent(error_code const& error, int ev) const noexcept override
-    {
-        return error.value() == ev &&
-            &error.category() == this;
-    }
-};
-
-inline
-error_category const&
-get_error_category()
-{
-    static detail::websocket_error_category const cat{};
-    return cat;
 }
 
 } // detail
-
-inline
-error_code
-make_error_code(error e)
-{
-    return error_code(
-        static_cast<std::underlying_type<error>::type>(e),
-            detail::get_error_category());
-}
-
 } // websocket
 } // beast
 } // boost