63e88f80
 Hu Chunming
提交三方库
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#ifndef BOOST_LEAF_COMMON_HPP_INCLUDED
#define BOOST_LEAF_COMMON_HPP_INCLUDED
// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
// 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)
#include <boost/leaf/config.hpp>
#include <boost/leaf/detail/demangle.hpp>
#include <iosfwd>
#if BOOST_LEAF_CFG_STD_STRING
# include <string>
#endif
#include <cerrno>
#if BOOST_LEAF_CFG_WIN32
# include <windows.h>
# include <cstring>
# ifdef min
# undef min
# endif
# ifdef max
# undef max
# endif
#endif
namespace boost { namespace leaf {
struct BOOST_LEAF_SYMBOL_VISIBLE e_api_function { char const * value; };
#if BOOST_LEAF_CFG_STD_STRING
struct BOOST_LEAF_SYMBOL_VISIBLE e_file_name
{
std::string value;
};
#else
struct BOOST_LEAF_SYMBOL_VISIBLE e_file_name
{
constexpr static char const * const value = "<unavailable>";
BOOST_LEAF_CONSTEXPR explicit e_file_name( char const * ) { }
};
#endif
struct BOOST_LEAF_SYMBOL_VISIBLE e_errno
{
int value;
explicit e_errno(int val=errno): value(val) { }
template <class CharT, class Traits>
friend std::basic_ostream<CharT, Traits> & operator<<(std::basic_ostream<CharT, Traits> & os, e_errno const & err)
{
return os << type<e_errno>() << ": " << err.value << ", \"" << std::strerror(err.value) << '"';
}
};
struct BOOST_LEAF_SYMBOL_VISIBLE e_type_info_name { char const * value; };
struct BOOST_LEAF_SYMBOL_VISIBLE e_at_line { int value; };
namespace windows
{
struct e_LastError
{
unsigned value;
explicit e_LastError(unsigned val): value(val) { }
#if BOOST_LEAF_CFG_WIN32
e_LastError(): value(GetLastError()) { }
template <class CharT, class Traits>
friend std::basic_ostream<CharT, Traits> & operator<<(std::basic_ostream<CharT, Traits> & os, e_LastError const & err)
{
struct msg_buf
{
LPVOID * p;
msg_buf(): p(nullptr) { }
~msg_buf() noexcept { if(p) LocalFree(p); }
};
msg_buf mb;
if( FormatMessageA(
FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr,
err.value,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
(LPSTR)&mb.p,
0,
nullptr) )
{
BOOST_LEAF_ASSERT(mb.p != nullptr);
char * z = std::strchr((LPSTR)mb.p,0);
if( z[-1] == '\n' )
*--z = 0;
if( z[-1] == '\r' )
*--z = 0;
return os << type<e_LastError>() << ": " << err.value << ", \"" << (LPCSTR)mb.p << '"';
}
return os;
}
#endif
};
}
} }
#endif
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