ceph/src/Beast/include/beast/http/impl/error.ipp

   1 //
   2 // Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7
   8 #ifndef BEAST_HTTP_IMPL_ERROR_IPP
   9 #define BEAST_HTTP_IMPL_ERROR_IPP
  10
  11 #include <type_traits>
  12
  13 namespace boost {
  14 namespace system {
  15 template<>
  16 struct is_error_code_enum<beast::http::error>
  17 {
  18     static bool const value = true;
  19 };
  20 } // system
  21 } // boost
  22
  23 namespace beast {
  24 namespace http {
  25 namespace detail {
  26
  27 class http_error_category : public error_category
  28 {
  29 public:
  30     const char*
  31     name() const noexcept override
  32     {
  33         return "http";
  34     }
  35
  36     std::string
  37     message(int ev) const override
  38     {
  39         switch(static_cast<error>(ev))
  40         {
  41         default:
  42         case error::end_of_stream: return "end of stream";
  43         case error::partial_message: return "partial message";
  44         case error::buffer_overflow: return "buffer overflow";
  45         case error::bad_line_ending: return "bad line ending";
  46         case error::bad_method: return "bad method";
  47         case error::bad_path: return "bad path";
  48         case error::bad_version: return "bad version";
  49         case error::bad_status: return "bad status";
  50         case error::bad_reason: return "bad reason";
  51         case error::bad_field: return "bad field";
  52         case error::bad_value: return "bad value";
  53         case error::bad_content_length: return "bad Content-Length";
  54         case error::bad_transfer_encoding: return "bad Transfer-Encoding";
  55         case error::bad_chunk: return "bad chunk";
  56         }
  57     }
  58
  59     error_condition
  60     default_error_condition(
  61         int ev) const noexcept override
  62     {
  63         return error_condition{ev, *this};
  64     }
  65
  66     bool
  67     equivalent(int ev,
  68         error_condition const& condition
  69             ) const noexcept override
  70     {
  71         return condition.value() == ev &&
  72             &condition.category() == this;
  73     }
  74
  75     bool
  76     equivalent(error_code const& error,
  77         int ev) const noexcept override
  78     {
  79         return error.value() == ev &&
  80             &error.category() == this;
  81     }
  82 };
  83
  84 inline
  85 error_category const&
  86 get_http_error_category()
  87 {
  88     static http_error_category const cat{};
  89     return cat;
  90 }
  91
  92 } // detail
  93
  94 inline
  95 error_code
  96 make_error_code(error ev)
  97 {
  98     return error_code{
  99         static_cast<std::underlying_type<error>::type>(ev),
 100             detail::get_http_error_category()};
 101 }
 102
 103 } // http
 104 } // beast
 105
 106 #endif