libcruft-util/except.cpp

144 lines
3.3 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2010 Danny Robson <danny@nerdcruft.net>
*/
#include "except.hpp"
#include "debug.hpp"
#include "platform.hpp"
#include <cstring>
#include <cerrno>
using util::errno_error;
///////////////////////////////////////////////////////////////////////////////
/// 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_NEQ (_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_NEQ (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_NEQ (code, 0);
throw errno_error (code);
}
///////////////////////////////////////////////////////////////////////////////
#if defined(PLATFORM_WIN32)
using util::win32_error;
win32_error::win32_error (DWORD _id):
runtime_error ("Win32 error"),
id (_id)
{
CHECK_NEQ (id, ERROR_SUCCESS);
}
//-----------------------------------------------------------------------------
win32_error::win32_error (void):
runtime_error ("Win32 error"),
id (GetLastError ())
{
CHECK_NEQ (id, ERROR_SUCCESS);
}
///////////////////////////////////////////////////////////////////////////////
void
win32_error::try_code (void)
{
try_code (GetLastError ());
}
//-----------------------------------------------------------------------------
void
win32_error::try_code (DWORD id)
{
if (id == ERROR_SUCCESS)
return;
throw_code (id);
}
//-----------------------------------------------------------------------------
void
win32_error::throw_code (void)
{
throw_code (GetLastError ());
}
//-----------------------------------------------------------------------------
void
win32_error::throw_code (DWORD id)
{
CHECK (id != ERROR_SUCCESS);
throw win32_error (id);
}
#endif