ceph/src/boost/boost/filesystem/exception.hpp

   1 //  boost/filesystem/exception.hpp  -----------------------------------------------------//
   2
   3 //  Copyright Beman Dawes 2003
   4 //  Copyright Andrey Semashev 2019
   5
   6 //  Distributed under the Boost Software License, Version 1.0.
   7 //  See http://www.boost.org/LICENSE_1_0.txt
   8
   9 //  Library home page: http://www.boost.org/libs/filesystem
  10
  11 #ifndef BOOST_FILESYSTEM3_EXCEPTION_HPP
  12 #define BOOST_FILESYSTEM3_EXCEPTION_HPP
  13
  14 #include <boost/config.hpp>
  15
  16 # if defined( BOOST_NO_STD_WSTRING )
  17 #   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
  18 # endif
  19
  20 #include <boost/filesystem/config.hpp>
  21 #include <boost/filesystem/path.hpp>
  22
  23 #include <string>
  24 #include <boost/system/error_code.hpp>
  25 #include <boost/system/system_error.hpp>
  26 #include <boost/smart_ptr/intrusive_ptr.hpp>
  27 #include <boost/smart_ptr/intrusive_ref_counter.hpp>
  28
  29 #include <boost/config/abi_prefix.hpp> // must be the last #include
  30
  31 #if defined(BOOST_MSVC)
  32 #pragma warning(push)
  33 // 'm_A' : class 'A' needs to have dll-interface to be used by clients of class 'B'
  34 #pragma warning(disable: 4251)
  35 // non dll-interface class 'A' used as base for dll-interface class 'B'
  36 #pragma warning(disable: 4275)
  37 #endif
  38
  39 namespace boost {
  40 namespace filesystem {
  41
  42 //--------------------------------------------------------------------------------------//
  43 //                                                                                      //
  44 //                            class filesystem_error                                    //
  45 //                                                                                      //
  46 //--------------------------------------------------------------------------------------//
  47
  48 class BOOST_FILESYSTEM_DECL filesystem_error :
  49   public system::system_error
  50 {
  51   // see http://www.boost.org/more/error_handling.html for design rationale
  52
  53 public:
  54   filesystem_error(const std::string& what_arg, system::error_code ec);
  55   filesystem_error(const std::string& what_arg, const path& path1_arg, system::error_code ec);
  56   filesystem_error(const std::string& what_arg, const path& path1_arg, const path& path2_arg, system::error_code ec);
  57
  58   filesystem_error(filesystem_error const& that);
  59   filesystem_error& operator= (filesystem_error const& that);
  60
  61   ~filesystem_error() BOOST_NOEXCEPT_OR_NOTHROW;
  62
  63   const path& path1() const BOOST_NOEXCEPT
  64   {
  65     return m_imp_ptr.get() ? m_imp_ptr->m_path1 : get_empty_path();
  66   }
  67   const path& path2() const BOOST_NOEXCEPT
  68   {
  69     return m_imp_ptr.get() ? m_imp_ptr->m_path2 : get_empty_path();
  70   }
  71
  72   const char* what() const BOOST_NOEXCEPT_OR_NOTHROW;
  73
  74 private:
  75   static const path& get_empty_path() BOOST_NOEXCEPT;
  76
  77 private:
  78   struct impl :
  79     public boost::intrusive_ref_counter< impl >
  80   {
  81     path         m_path1; // may be empty()
  82     path         m_path2; // may be empty()
  83     std::string  m_what;  // not built until needed
  84
  85     BOOST_DEFAULTED_FUNCTION(impl(), {})
  86     explicit impl(path const& path1) : m_path1(path1) {}
  87     impl(path const& path1, path const& path2) : m_path1(path1), m_path2(path2) {}
  88   };
  89   boost::intrusive_ptr< impl > m_imp_ptr;
  90 };
  91
  92 } // namespace filesystem
  93 } // namespace boost
  94
  95 #if defined(BOOST_MSVC)
  96 #pragma warning(pop)
  97 #endif
  98
  99 #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
 100 #endif // BOOST_FILESYSTEM3_EXCEPTION_HPP