[gcc] GCC 4.5.0=>4.5.1

gcc/libstdc++-v3/testsuite/util/testsuite_io.h

-// -*- C++ -*-
-// Testing streambuf/filebuf/stringbuf for the C++ library testsuite.
-//
-// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009
-// 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 3, 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 COPYING3.  If not see
-// <http://www.gnu.org/licenses/>.
-//
-
-#ifndef _GLIBCXX_TESTSUITE_IO_H
-#define _GLIBCXX_TESTSUITE_IO_H
-
-#include <ios>
-
-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<typename T>
-    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<std::streambuf>   constraint_streambuf;
-  typedef  constraint_buf<std::filebuf>     constraint_filebuf;
-  typedef  constraint_buf<std::stringbuf>   constraint_stringbuf;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  typedef  constraint_buf<std::wstreambuf>  constraint_wstreambuf;
-  typedef  constraint_buf<std::wfilebuf>    constraint_wfilebuf;
-  typedef  constraint_buf<std::wstringbuf>  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<typename T>
-    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<std::streambuf>   sync_streambuf;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  typedef  sync_buf<std::wstreambuf>  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<typename T>
-    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<std::streambuf>   fail_streambuf;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  typedef  fail_buf<std::wstreambuf>  fail_wstreambuf;
-#endif
-
-  // Facets that throw an exception for every virtual function.
-  struct facet_error: std::exception { };
-
-  template<typename T>
-    class fail_num_get
-    : public std::num_get<T>
-    {
-      typedef std::ios_base ios_base;
-      typedef typename std::num_get<T>::iter_type iter_type;
-
-    protected:
-      iter_type 
-      do_get(iter_type, 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&, 
-             unsigned short&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             unsigned int&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             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&, 
-             long long&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             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&, 
-             float&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             double&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             long double&) const
-      { throw facet_error(); return iter_type(); }
-      
-      virtual iter_type 
-      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, 
-             void*&) const
-      { throw facet_error(); return iter_type(); }
-    };
-
-  typedef  fail_num_get<char>     fail_num_get_char;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  typedef  fail_num_get<wchar_t>  fail_num_get_wchar_t;
-#endif
-
-  template<typename T>
-    class fail_num_put
-    : public std::num_put<T>
-    {
-      typedef std::ios_base ios_base;
-      typedef typename std::num_put<T>::iter_type iter_type;
-      typedef typename std::num_put<T>::char_type char_type;
-
-    protected:
-      iter_type 
-      do_put(iter_type, ios_base&, char_type, bool) const
-      { throw facet_error(); return iter_type(NULL); }
-      
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, long) const
-      { throw facet_error(); return iter_type(NULL); }
-
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, 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, long long) const
-      { throw facet_error(); return iter_type(NULL); }
-
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, unsigned long long) const
-      { throw facet_error(); return iter_type(NULL); }
-#endif
-      
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, double) const
-      { throw facet_error(); return iter_type(NULL); }
-
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, long double) const
-      { throw facet_error(); return iter_type(NULL); }
-      
-      virtual iter_type 
-      do_put(iter_type, ios_base&, char_type, const void*) const
-      { throw facet_error(); return iter_type(NULL); }
-    };
-
-  typedef  fail_num_put<char>     fail_num_put_char;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  typedef  fail_num_put<wchar_t>  fail_num_put_wchar_t;
-#endif
-} // namespace __gnu_test
-
-#endif // _GLIBCXX_TESTSUITE_IO_H
-