libcruft-util/except.cpp

111 lines
2.4 KiB
C++

/*
* This file is part of libgim.
*
* libgim is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2010 Danny Robson <danny@nerdcruft.net>
*/
#include "except.hpp"
#include "debug.hpp"
#include "platform.hpp"
#include <cstring>
#include <cerrno>
using namespace std;
/// Construct an errno_error from a given error value. The error value MUST signal an error at
/// construction time.
errno_error::errno_error (int _errno):
runtime_error (strerror (_errno)),
id (_errno)
{
check_hard (_errno != 0);
}
/// Construct an errno_error from the current value of errno. errno MUST signal an error at
/// construction time.
errno_error::errno_error ():
runtime_error (strerror (errno)),
id (errno)
{
check_hard (errno != 0);
}
/// Throw an errno_error exception if errno currently signals an error.
void
errno_error::try_code (void)
{ try_code (errno); }
/// Throw an errno_error exception if 'code' represents an error.
void
errno_error::try_code(int code) {
if (code != 0)
throw errno_error(code);
}
void
errno_error::throw_code (void)
{ throw_code (errno); }
void
errno_error::throw_code (int code) {
check_hard (code != 0);
throw errno_error (code);
}
#if defined(PLATFORM_WIN32)
win32_error::win32_error (DWORD _id):
runtime_error ("Win32 error"),
id (_id)
{
check_soft (id != ERROR_SUCCESS);
}
win32_error::win32_error (void):
runtime_error ("Win32 error"),
id (GetLastError ())
{
check_soft (id != ERROR_SUCCESS);
}
void
win32_error::try_code (void) {
const auto id = GetLastError ();
if (id == ERROR_SUCCESS)
return;
throw win32_error (id);
}
void
win32_error::throw_code (void) {
const auto id = GetLastError ();
check (id != ERROR_SUCCESS);
throw win32_error (id);
}
#endif