147 lines
3.1 KiB
C++
147 lines
3.1 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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 "../debug.hpp"
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#include <cstring>
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using util::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 util::posix::eai;
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#include <netdb.h>
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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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