144 lines
2.9 KiB
C++
144 lines
2.9 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2010-2018
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* Danny Robson <danny@nerdcruft.net>
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*/
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#include "except.hpp"
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#include "../platform.hpp"
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#include "../debug/assert.hpp"
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#include <cstring>
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using cruft::posix::error;
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///////////////////////////////////////////////////////////////////////////////
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/// Construct an exception object from a given error value.
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///
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/// The error value MUST be an error at construction time.
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error::error (int _code):
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m_code (_code)
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{
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CHECK_NEQ (_code, 0);
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}
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///----------------------------------------------------------------------------
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/// Construct an exception object from the current value of errno.
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///
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/// errno MUST signal an error at construction time.
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error::error ():
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error (last_code ())
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{
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CHECK_NEQ (m_code, 0);
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}
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///////////////////////////////////////////////////////////////////////////////
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int
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error::last_code (void)
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{
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return errno;
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}
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//-----------------------------------------------------------------------------
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int
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error::code (void) const
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{
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return m_code;
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}
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///////////////////////////////////////////////////////////////////////////////
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/// Throw an exception object if errno currently signals an error.
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void
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error::try_code (void)
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{
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try_code (last_code ());
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}
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///----------------------------------------------------------------------------
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/// Throw an exception object if 'code' represents an error.
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void
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error::try_code (int code)
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{
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if (__builtin_expect (code != 0, false))
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throw error (code);
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}
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///----------------------------------------------------------------------------
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void
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error::throw_code (void)
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{
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throw_code (last_code ());
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}
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///----------------------------------------------------------------------------
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void
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error::throw_code (int code)
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{
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CHECK_NEQ (code, 0);
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throw error (code);
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}
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///////////////////////////////////////////////////////////////////////////////
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const char*
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error::what (void) const noexcept
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{
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return strerror (m_code);
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}
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///////////////////////////////////////////////////////////////////////////////
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using cruft::posix::eai;
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#if !defined(PLATFORM_WIN32)
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#include <netdb.h>
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#else
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#include <ws2tcpip.h>
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#endif
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//-----------------------------------------------------------------------------
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eai::eai (int code):
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runtime_error (gai_strerror (code)),
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m_code (code)
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{ ; }
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//-----------------------------------------------------------------------------
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int
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eai::code (void) const
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{
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return m_code;
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}
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//-----------------------------------------------------------------------------
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void
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eai::try_code (int code)
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{
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if (code)
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throw_code (code);
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}
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//-----------------------------------------------------------------------------
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void
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eai::throw_code (int code)
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{
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throw eai { code };
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}
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