mirror of git://gcc.gnu.org/git/gcc.git
258 lines
7.2 KiB
C++
258 lines
7.2 KiB
C++
// Standard exception classes -*- C++ -*-
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// Copyright (C) 2001-2015 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file include/stdexcept
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* This is a Standard C++ Library header.
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*/
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//
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// ISO C++ 19.1 Exception classes
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//
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#ifndef _GLIBCXX_STDEXCEPT
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#define _GLIBCXX_STDEXCEPT 1
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#pragma GCC system_header
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#include <exception>
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#include <string>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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#if _GLIBCXX_USE_DUAL_ABI
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#if _GLIBCXX_USE_CXX11_ABI
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// Emulates an old COW string when the new std::string is in use.
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struct __cow_string
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{
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union {
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const char* _M_p;
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char _M_bytes[sizeof(const char*)];
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};
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__cow_string();
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__cow_string(const std::string&);
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__cow_string(const char*, size_t);
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__cow_string(const __cow_string&) _GLIBCXX_USE_NOEXCEPT;
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__cow_string& operator=(const __cow_string&) _GLIBCXX_USE_NOEXCEPT;
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~__cow_string();
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#if __cplusplus >= 201103L
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__cow_string(__cow_string&&) noexcept;
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__cow_string& operator=(__cow_string&&) noexcept;
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#endif
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};
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typedef basic_string<char> __sso_string;
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#else // _GLIBCXX_USE_CXX11_ABI
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typedef basic_string<char> __cow_string;
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// Emulates a new SSO string when the old std::string is in use.
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struct __sso_string
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{
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struct __str
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{
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const char* _M_p;
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size_t _M_string_length;
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char _M_local_buf[16];
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};
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union {
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__str _M_s;
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char _M_bytes[sizeof(__str)];
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};
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__sso_string() _GLIBCXX_USE_NOEXCEPT;
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__sso_string(const std::string&);
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__sso_string(const char*, size_t);
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__sso_string(const __sso_string&);
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__sso_string& operator=(const __sso_string&);
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~__sso_string();
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#if __cplusplus >= 201103L
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__sso_string(__sso_string&&) noexcept;
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__sso_string& operator=(__sso_string&&) noexcept;
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#endif
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};
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#endif // _GLIBCXX_USE_CXX11_ABI
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#else // _GLIBCXX_USE_DUAL_ABI
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typedef basic_string<char> __sso_string;
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typedef basic_string<char> __cow_string;
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#endif
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/**
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* @addtogroup exceptions
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* @{
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*/
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/** Logic errors represent problems in the internal logic of a program;
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* in theory, these are preventable, and even detectable before the
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* program runs (e.g., violations of class invariants).
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* @brief One of two subclasses of exception.
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*/
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class logic_error : public exception
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{
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__cow_string _M_msg;
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public:
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/** Takes a character string describing the error. */
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explicit
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logic_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit
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logic_error(const char*);
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#endif
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#if _GLIBCXX_USE_CXX11_ABI || _GLIBCXX_DEFINE_STDEXCEPT_COPY_OPS
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logic_error(const logic_error&) _GLIBCXX_USE_NOEXCEPT;
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logic_error& operator=(const logic_error&) _GLIBCXX_USE_NOEXCEPT;
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#endif
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virtual ~logic_error() _GLIBCXX_USE_NOEXCEPT;
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/** Returns a C-style character string describing the general cause of
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* the current error (the same string passed to the ctor). */
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virtual const char*
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what() const _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown by the library, or by you, to report domain errors (domain in
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* the mathematical sense). */
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class domain_error : public logic_error
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{
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public:
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explicit domain_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit domain_error(const char*);
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#endif
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virtual ~domain_error() _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown to report invalid arguments to functions. */
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class invalid_argument : public logic_error
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{
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public:
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explicit invalid_argument(const string& __arg);
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#if __cplusplus >= 201103L
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explicit invalid_argument(const char*);
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#endif
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virtual ~invalid_argument() _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown when an object is constructed that would exceed its maximum
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* permitted size (e.g., a basic_string instance). */
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class length_error : public logic_error
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{
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public:
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explicit length_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit length_error(const char*);
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#endif
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virtual ~length_error() _GLIBCXX_USE_NOEXCEPT;
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};
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/** This represents an argument whose value is not within the expected
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* range (e.g., boundary checks in basic_string). */
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class out_of_range : public logic_error
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{
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public:
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explicit out_of_range(const string& __arg);
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#if __cplusplus >= 201103L
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explicit out_of_range(const char*);
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#endif
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virtual ~out_of_range() _GLIBCXX_USE_NOEXCEPT;
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};
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/** Runtime errors represent problems outside the scope of a program;
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* they cannot be easily predicted and can generally only be caught as
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* the program executes.
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* @brief One of two subclasses of exception.
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*/
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class runtime_error : public exception
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{
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__cow_string _M_msg;
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public:
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/** Takes a character string describing the error. */
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explicit
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runtime_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit
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runtime_error(const char*);
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#endif
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#if _GLIBCXX_USE_CXX11_ABI || _GLIBCXX_DEFINE_STDEXCEPT_COPY_OPS
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runtime_error(const runtime_error&) _GLIBCXX_USE_NOEXCEPT;
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runtime_error& operator=(const runtime_error&) _GLIBCXX_USE_NOEXCEPT;
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#endif
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virtual ~runtime_error() _GLIBCXX_USE_NOEXCEPT;
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/** Returns a C-style character string describing the general cause of
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* the current error (the same string passed to the ctor). */
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virtual const char*
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what() const _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown to indicate range errors in internal computations. */
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class range_error : public runtime_error
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{
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public:
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explicit range_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit range_error(const char*);
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#endif
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virtual ~range_error() _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown to indicate arithmetic overflow. */
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class overflow_error : public runtime_error
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{
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public:
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explicit overflow_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit overflow_error(const char*);
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#endif
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virtual ~overflow_error() _GLIBCXX_USE_NOEXCEPT;
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};
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/** Thrown to indicate arithmetic underflow. */
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class underflow_error : public runtime_error
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{
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public:
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explicit underflow_error(const string& __arg);
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#if __cplusplus >= 201103L
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explicit underflow_error(const char*);
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#endif
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virtual ~underflow_error() _GLIBCXX_USE_NOEXCEPT;
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};
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// @} group exceptions
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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#endif /* _GLIBCXX_STDEXCEPT */
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