// -*- C++ -*- // Testing streambuf/filebuf/stringbuf for the C++ library testsuite. // // Copyright (C) 2003, 2004 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option) // any later version. // // This library 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. // // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. #ifndef _GLIBCXX_TESTSUITE_IO_H #define _GLIBCXX_TESTSUITE_IO_H #include #include namespace __gnu_test { // Used to verify the constraints/requirements on get and put areas // as defined in // 27.5.1 - Stream buffer requirements: get and put areas // 27.8.1.1 - Template class basic_filebuf p 3 // If the file is not open (ios_base::in) -> input seq. cannot be read // If the file is not open (ios_base::out) -> output seq. cannot be written // Joint file position // 27.8.1.4 - Overridden virtual functions p9 // If unbuffered, pbase == pptr == NULL // 27.7.1.1 - Basic_stringbuf constructors p 1 // 27.8.1.2 - Basic_filebuf constructors p 1 // ... , initializing the base class with basic_streambuf() 27.5.2.1 template class constraint_buf : public T { public: bool write_position() { bool one = this->pptr() != NULL; bool two = this->pptr() < this->epptr(); return one && two; } bool read_position() { bool one = this->gptr() != NULL; bool two = this->gptr() < this->egptr(); return one && two; } bool unbuffered() { bool one = this->pbase() == NULL; bool two = this->pptr() == NULL; return one && two; } bool check_pointers() { bool one = this->eback() == NULL; bool two = this->gptr() == NULL; bool three = this->egptr() == NULL; bool four = this->pbase() == NULL; bool five = this->pptr() == NULL; bool six = this->epptr() == NULL; return one && two && three && four && five && six; } }; typedef constraint_buf constraint_streambuf; typedef constraint_buf constraint_filebuf; typedef constraint_buf constraint_stringbuf; #ifdef _GLIBCXX_USE_WCHAR_T typedef constraint_buf constraint_wstreambuf; typedef constraint_buf constraint_wfilebuf; typedef constraint_buf constraint_wstringbuf; #endif // Used to check if basic_streambuf::pubsync() has been called. // This is useful for checking if a function creates [io]stream::sentry // objects, since the sentry constructors call tie()->flush(). template class sync_buf : public T { private: bool m_sync_called; public: sync_buf() : m_sync_called(false) { } bool sync_called() const { return m_sync_called; } protected: int sync() { m_sync_called = true; return 0; } }; typedef sync_buf sync_streambuf; #ifdef _GLIBCXX_USE_WCHAR_T typedef sync_buf sync_wstreambuf; #endif // Throws on all overflow and underflow calls. struct underflow_error: std::exception { }; struct overflow_error: std::exception { }; struct positioning_error: std::exception { }; template struct fail_buf : public T { typedef typename T::char_type char_type; typedef typename T::int_type int_type; typedef typename T::off_type off_type; typedef typename T::pos_type pos_type; private: char_type p[2]; public: fail_buf() { p[0] = char_type('s'); p[1] = char_type(); setg(p, p, p + 1); } virtual int_type underflow() { throw underflow_error(); return int_type(); } virtual int_type uflow() { throw underflow_error(); return int_type(); } virtual int_type overflow(int_type) { throw overflow_error(); return int_type(); } virtual pos_type seekoff(off_type, std::ios_base::seekdir, std::ios_base::openmode) { throw positioning_error(); return pos_type(off_type(-1)); } virtual pos_type seekpos(pos_type, std::ios_base::openmode) { throw positioning_error(); return pos_type(off_type(-1)); } virtual int sync() { throw positioning_error(); return 0; } }; typedef fail_buf fail_streambuf; #ifdef _GLIBCXX_USE_WCHAR_T typedef fail_buf fail_wstreambuf; #endif // Facets that throw an exception for every virtual function. struct facet_error: std::exception { }; template class fail_num_get : public std::num_get { typedef std::ios_base ios_base; typedef typename std::num_get::iter_type iter_type; protected: iter_type do_get(iter_type a, iter_type, ios_base&, ios_base::iostate&, bool&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, long&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, unsigned short&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, unsigned int&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, unsigned long&) const { throw facet_error(); return iter_type(); } #ifdef _GLIBCXX_USE_LONG_LONG virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, long long&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, unsigned long long&) const { throw facet_error(); return iter_type(); } #endif virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, float&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, double&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, long double&) const { throw facet_error(); return iter_type(); } virtual iter_type do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, void*&) const { throw facet_error(); return iter_type(); } }; typedef fail_num_get fail_num_get_char; #ifdef _GLIBCXX_USE_WCHAR_T typedef fail_num_get fail_num_get_wchar_t; #endif template class fail_num_put : public std::num_put { typedef std::ios_base ios_base; typedef typename std::num_put::iter_type iter_type; typedef typename std::num_put::char_type char_type; protected: iter_type do_put(iter_type, ios_base&, char_type __fill, bool __v) const { throw facet_error(); return iter_type(NULL); } virtual iter_type do_put(iter_type, ios_base&, char_type __fill, long __v) const { throw facet_error(); return iter_type(NULL); } virtual iter_type do_put(iter_type, ios_base&, char_type __fill, unsigned long) const { throw facet_error(); return iter_type(NULL); } #ifdef _GLIBCXX_USE_LONG_LONG virtual iter_type do_put(iter_type, ios_base&, char_type __fill, long long __v) const { throw facet_error(); return iter_type(NULL); } virtual iter_type do_put(iter_type, ios_base&, char_type __fill, unsigned long long) const { throw facet_error(); return iter_type(NULL); } #endif virtual iter_type do_put(iter_type, ios_base&, char_type __fill, double __v) const { throw facet_error(); return iter_type(NULL); } virtual iter_type do_put(iter_type, ios_base&, char_type __fill, long double __v) const { throw facet_error(); return iter_type(NULL); } virtual iter_type do_put(iter_type, ios_base&, char_type __fill, const void* __v) const { throw facet_error(); return iter_type(NULL); } }; typedef fail_num_put fail_num_put_char; #ifdef _GLIBCXX_USE_WCHAR_T typedef fail_num_put fail_num_put_wchar_t; #endif }; // namespace __gnu_test #endif // _GLIBCXX_TESTSUITE_IO_H