Tidy up error types:

* Restructure header material
* Clean up namespace type injections
* Remove extraneous 'success' constants

include/beast/http/parse_error.hpp

@@ -15,15 +15,12 @@ namespace http {
 
 enum class parse_error
 {
-    success = 0,
-
-    connection_closed,
+    connection_closed = 1,
 
     bad_method,
     bad_uri,
     bad_version,
     bad_crlf,
-    bad_request,
 
     bad_status,
     bad_reason,
@@ -45,132 +42,9 @@ enum class parse_error
     general
 };
 
-class parse_error_category : public boost::system::error_category
-{
-public:
-    const char*
-    name() const noexcept override
-    {
-        return "http";
-    }
-
-    std::string
-    message(int ev) const override
-    {
-        switch(static_cast<parse_error>(ev))
-        {
-        case parse_error::connection_closed:
-            return "data after Connection close";
-
-        case parse_error::bad_method:
-            return "bad method";
-
-        case parse_error::bad_uri:
-            return "bad request-target";
-
-        case parse_error::bad_version:
-            return "bad HTTP-Version";
-
-        case parse_error::bad_crlf:
-            return "missing CRLF";
-
-        case parse_error::bad_request:
-            return "bad reason-phrase";
-
-        case parse_error::bad_status:
-            return "bad status-code";
-
-        case parse_error::bad_reason:
-            return "bad reason-phrase";
-
-        case parse_error::bad_field:
-            return "bad field token";
-
-        case parse_error::bad_value:
-            return "bad field-value";
-
-        case parse_error::bad_content_length:
-            return "bad Content-Length";
-
-        case parse_error::illegal_content_length:
-            return "illegal Content-Length with chunked Transfer-Encoding";
-
-        case parse_error::bad_on_headers_rv:
-            return "on_headers returned an unknown value";
-
-        case parse_error::invalid_chunk_size:
-            return "invalid chunk size";
-
-        case parse_error::invalid_ext_name:
-            return "invalid ext name";
-
-        case parse_error::invalid_ext_val:
-            return "invalid ext val";
-
-        case parse_error::headers_too_big:
-            return "headers size limit exceeded";
-
-        case parse_error::body_too_big:
-            return "body size limit exceeded";
-
-        case parse_error::short_read:
-            return "unexpected end of data";
-
-        default:
-            return "parse error";
-        }
-    }
-
-    boost::system::error_condition
-    default_error_condition(int ev) const noexcept override
-    {
-        return boost::system::error_condition(ev, *this);
-    }
-
-    bool
-    equivalent(int ev,
-        boost::system::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
-boost::system::error_category const&
-get_parse_error_category()
-{
-    static parse_error_category const cat{};
-    return cat;
-}
-
-inline
-boost::system::error_code
-make_error_code(parse_error ev)
-{
-    return error_code(static_cast<int>(ev),
-        get_parse_error_category());
-}
-
 } // http
 } // beast
 
-namespace boost {
-namespace system {
-template<>
-struct is_error_code_enum<beast::http::parse_error>
-{
-    static bool const value = true;
-};
-} // system
-} // boost
+#include <beast/http/impl/parse_error.ipp>
 
 #endif