gcc/libstdc++-v3/libsupc++/exception.h
Jonathan Wakely f2ce64b53f libstdc++: Improvements to Doxygen markup
This attempst to improve the doxygen output to work around what seems to
be some bugs in doxygen (issues 8635 and 8638).

The @addtogroup command doesn't work for entities inside a nested
namespace (see 8635) so we need to close and reopen groups on entering
and elaving nested namespaces. This fixes the problem that
chrono::duration and chrono::time_point were not documented in the
"Time" documentation group. I am unable to make the path classes appear
as part of their relevant groups (File System and Filesystem TS), nor
the contents of <exception> or <system_error>. I have made some minor
improvements to the docs for those types, including starting to address
PR 97001 by adding @since to the doxygen comments.

This change also excludes the <experimental/bits/net.h> header from
Doxygen processing, so we don't get an unwanted "Networking-ts" group
in the documentation.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* doc/doxygen/doxygroups.cc: Fix docs for std::literals.
	* doc/doxygen/user.cfg.in: Exclude the Networking TS header.
	Add some more predefined macros.
	* include/bits/fs_fwd.h: Move @addtogroup commands inside
	namespaces. Add better documentation.
	* include/bits/fs_path.h: Likewise.
	* include/experimental/bits/fs_fwd.h: Likewise.
	* include/experimental/bits/fs_path.h: Likewise.
	* include/ext/throw_allocator.h: Fix typo and improve docs.
	* include/std/chrono: Move @addtogroup commands.
	* include/std/system_error: Move @addtogroup commands.
	* libsupc++/exception: Improve documentation.
	* libsupc++/exception.h: Add @since documentation.
2021-07-01 18:45:48 +01:00

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C++

// Exception Handling support header for -*- C++ -*-
// Copyright (C) 2016-2021 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
// GCC 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, or (at your option)
// any later version.
//
// GCC 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.
//
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file bits/exception.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly.
*/
#ifndef __EXCEPTION_H
#define __EXCEPTION_H 1
#pragma GCC system_header
#pragma GCC visibility push(default)
#include <bits/c++config.h>
extern "C++" {
namespace std
{
/**
* @defgroup exceptions Exceptions
* @ingroup diagnostics
* @since C++98
*
* Classes and functions for reporting errors via exceptions.
* @{
*/
/**
* @brief Base class for all library exceptions.
*
* This is the base class for all exceptions thrown by the standard
* library, and by certain language expressions. You are free to derive
* your own %exception classes, or use a different hierarchy, or to
* throw non-class data (e.g., fundamental types).
*/
class exception
{
public:
exception() _GLIBCXX_NOTHROW { }
virtual ~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
#if __cplusplus >= 201103L
exception(const exception&) = default;
exception& operator=(const exception&) = default;
exception(exception&&) = default;
exception& operator=(exception&&) = default;
#endif
/** Returns a C-style character string describing the general cause
* of the current error. */
virtual const char*
what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
};
/// @}
} // namespace std
}
#pragma GCC visibility pop
#endif