[thirdparty/gcc.git] / libstdc++-v3 / testsuite / testsuite_io.h

// -*- 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// 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 <fstream>
#include <sstream>

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 -1;
      }
      
      virtual int_type uflow() 
      {
	throw underflow_error();
	return -1;
      }
      
      virtual int_type
      overflow(int_type)
      {
	throw overflow_error();
	return -1;
      }
      
      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 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<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 __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<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
Commit	Line	Data
46c4e5d6	1	// -- C++ --
983de0da	2	// Testing streambuf/filebuf/stringbuf for the C++ library testsuite.
46c4e5d6	3	//
983de0da	4	// Copyright (C) 2003, 2004 Free Software Foundation, Inc.
46c4e5d6 BK	5	//
	6	// This file is part of the GNU ISO C++ Library. This library is free
	7	// software; you can redistribute it and/or modify it under the
	8	// terms of the GNU General Public License as published by the
	9	// Free Software Foundation; either version 2, or (at your option)
	10	// any later version.
	11	//
	12	// This library is distributed in the hope that it will be useful,
	13	// but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	// GNU General Public License for more details.
	16	//
	17	// You should have received a copy of the GNU General Public License along
	18	// with this library; see the file COPYING. If not, write to the Free
	19	// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
	20	// USA.
	21	//
	22	// As a special exception, you may use this file as part of a free software
	23	// library without restriction. Specifically, if other files instantiate
	24	// templates or use macros or inline functions from this file, or you compile
	25	// this file and link it with other files to produce an executable, this
	26	// file does not by itself cause the resulting executable to be covered by
	27	// the GNU General Public License. This exception does not however
	28	// invalidate any other reasons why the executable file might be covered by
	29	// the GNU General Public License.
	30
3d7c150e BK	31	#ifndef _GLIBCXX_TESTSUITE_IO_H
3d7c150e BK	32	#define _GLIBCXX_TESTSUITE_IO_H
46c4e5d6 BK	33
46c4e5d6 BK	34	#include <fstream>
983de0da	35	#include <sstream>
46c4e5d6	36
aecf642c	37	namespace __gnu_test
46c4e5d6 BK	38	{
	39	// Used to verify the constraints/requirements on get and put areas
	40	// as defined in
	41	// 27.5.1 - Stream buffer requirements: get and put areas
	42	// 27.8.1.1 - Template class basic_filebuf p 3
	43	// If the file is not open (ios_base::in) -> input seq. cannot be read
	44	// If the file is not open (ios_base::out) -> output seq. cannot be written
	45	// Joint file position
	46	// 27.8.1.4 - Overridden virtual functions p9
	47	// If unbuffered, pbase == pptr == NULL
983de0da PC	48	// 27.7.1.1 - Basic_stringbuf constructors p 1
	49	// 27.8.1.2 - Basic_filebuf constructors p 1
	50	// ... , initializing the base class with basic_streambuf() 27.5.2.1
	51	template<typename T>
	52	class constraint_buf
	53	: public T
	54	{
	55	public:
	56	bool
	57	write_position()
	58	{
	59	bool one = this->pptr() != NULL;
	60	bool two = this->pptr() < this->epptr();
	61	return one && two;
	62	}
	63
	64	bool
	65	read_position()
	66	{
	67	bool one = this->gptr() != NULL;
	68	bool two = this->gptr() < this->egptr();
	69	return one && two;
	70	}
	71
	72	bool
	73	unbuffered()
	74	{
	75	bool one = this->pbase() == NULL;
	76	bool two = this->pptr() == NULL;
	77	return one && two;
	78	}
	79
	80	bool
	81	check_pointers()
	82	{
	83	bool one = this->eback() == NULL;
	84	bool two = this->gptr() == NULL;
	85	bool three = this->egptr() == NULL;
	86
	87	bool four = this->pbase() == NULL;
	88	bool five = this->pptr() == NULL;
	89	bool six = this->epptr() == NULL;
	90	return one && two && three && four && five && six;
	91	}
	92	};
46c4e5d6	93
983de0da PC	94	typedef constraint_buf<std::streambuf> constraint_streambuf;
	95	typedef constraint_buf<std::filebuf> constraint_filebuf;
	96	typedef constraint_buf<std::stringbuf> constraint_stringbuf;
	97	#ifdef _GLIBCXX_USE_WCHAR_T
	98	typedef constraint_buf<std::wstreambuf> constraint_wstreambuf;
	99	typedef constraint_buf<std::wfilebuf> constraint_wfilebuf;
	100	typedef constraint_buf<std::wstringbuf> constraint_wstringbuf;
	101	#endif
5681c890 PR	102
	103	// Used to check if basic_streambuf::pubsync() has been called.
	104	// This is useful for checking if a function creates [io]stream::sentry
	105	// objects, since the sentry constructors call tie()->flush().
9b8d9ac3 PC	106	template<typename T>
	107	class sync_buf
	108	: public T
	109	{
	110	private:
	111	bool m_sync_called;
5681c890	112
9b8d9ac3 PC	113	public:
	114	sync_buf()
	115	: m_sync_called(false)
	116	{ }
	117
	118	bool sync_called() const
	119	{ return m_sync_called; }
5681c890	120
9b8d9ac3 PC	121	protected:
	122	int sync()
	123	{
	124	m_sync_called = true;
	125	return 0;
	126	}
	127	};
5681c890	128
9b8d9ac3 PC	129	typedef sync_buf<std::streambuf> sync_streambuf;
	130	#ifdef _GLIBCXX_USE_WCHAR_T
	131	typedef sync_buf<std::wstreambuf> sync_wstreambuf;
	132	#endif
12841eb3 BK	133
	134	// Throws on all overflow and underflow calls.
	135	struct underflow_error: std::exception { };
	136	struct overflow_error: std::exception { };
	137	struct positioning_error: std::exception { };
	138
9b8d9ac3 PC	139	template<typename T>
	140	struct fail_buf
	141	: public T
12841eb3	142	{
9b8d9ac3 PC	143	typedef typename T::char_type char_type;
	144	typedef typename T::int_type int_type;
	145	typedef typename T::off_type off_type;
	146	typedef typename T::pos_type pos_type;
12841eb3	147
9b8d9ac3 PC	148	private:
9b8d9ac3 PC	149	char_type p[2];
12841eb3	150
9b8d9ac3 PC	151	public:
	152	fail_buf()
	153	{
	154	p[0] = char_type('s');
	155	p[1] = char_type();
	156	setg(p, p, p + 1);
	157	}
12841eb3	158
9b8d9ac3 PC	159	virtual int_type underflow()
	160	{
	161	throw underflow_error();
	162	return -1;
	163	}
	164
	165	virtual int_type uflow()
	166	{
	167	throw underflow_error();
	168	return -1;
	169	}
	170
	171	virtual int_type
	172	overflow(int_type)
	173	{
	174	throw overflow_error();
	175	return -1;
	176	}
	177
	178	virtual pos_type
	179	seekoff(off_type, std::ios_base::seekdir, std::ios_base::openmode)
	180	{
	181	throw positioning_error();
	182	return pos_type(off_type(-1));
	183	}
	184
	185	virtual pos_type
	186	seekpos(pos_type, std::ios_base::openmode)
	187	{
	188	throw positioning_error();
	189	return pos_type(off_type(-1));
	190	}
	191
	192	virtual int
	193	sync()
	194	{
	195	throw positioning_error();
	196	return 0;
	197	}
	198	};
12841eb3	199
9b8d9ac3 PC	200	typedef fail_buf<std::streambuf> fail_streambuf;
	201	#ifdef _GLIBCXX_USE_WCHAR_T
	202	typedef fail_buf<std::wstreambuf> fail_wstreambuf;
	203	#endif
12841eb3 BK	204
	205	// Facets that throw an exception for every virtual function.
	206	struct facet_error: std::exception { };
	207
9b8d9ac3 PC	208	template<typename T>
	209	class fail_num_get
	210	: public std::num_get<T>
	211	{
	212	typedef std::ios_base ios_base;
	213	typedef typename std::num_get<T>::iter_type iter_type;
12841eb3	214
9b8d9ac3 PC	215	protected:
	216	iter_type
	217	do_get(iter_type a, iter_type, ios_base&, ios_base::iostate&, bool&) const
	218	{ throw facet_error(); return iter_type(); }
12841eb3	219
9b8d9ac3 PC	220	virtual iter_type
	221	do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, long&) const
	222	{ throw facet_error(); return iter_type(); }
	223
	224	virtual iter_type
	225	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	226	unsigned short&) const
	227	{ throw facet_error(); return iter_type(); }
	228
	229	virtual iter_type
	230	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	231	unsigned int&) const
	232	{ throw facet_error(); return iter_type(); }
	233
	234	virtual iter_type
	235	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	236	unsigned long&) const
	237	{ throw facet_error(); return iter_type(); }
12841eb3 BK	238
12841eb3 BK	239	#ifdef _GLIBCXX_USE_LONG_LONG
9b8d9ac3 PC	240	virtual iter_type
	241	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	242	long long&) const
	243	{ throw facet_error(); return iter_type(); }
	244
	245	virtual iter_type
	246	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	247	unsigned long long&) const
	248	{ throw facet_error(); return iter_type(); }
12841eb3 BK	249	#endif
12841eb3 BK	250
9b8d9ac3 PC	251	virtual iter_type
	252	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	253	float&) const
	254	{ throw facet_error(); return iter_type(); }
	255
	256	virtual iter_type
	257	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	258	double&) const
	259	{ throw facet_error(); return iter_type(); }
	260
	261	virtual iter_type
	262	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	263	long double&) const
	264	{ throw facet_error(); return iter_type(); }
	265
	266	virtual iter_type
	267	do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
	268	void*&) const
	269	{ throw facet_error(); return iter_type(); }
	270	};
12841eb3	271
9b8d9ac3 PC	272	typedef fail_num_get<char> fail_num_get_char;
	273	#ifdef _GLIBCXX_USE_WCHAR_T
	274	typedef fail_num_get<wchar_t> fail_num_get_wchar_t;
	275	#endif
12841eb3	276
9b8d9ac3 PC	277	template<typename T>
	278	class fail_num_put
	279	: public std::num_put<T>
	280	{
	281	typedef std::ios_base ios_base;
	282	typedef typename std::num_put<T>::iter_type iter_type;
	283	typedef typename std::num_put<T>::char_type char_type;
	284
	285	protected:
	286	iter_type
	287	do_put(iter_type, ios_base&, char_type __fill, bool __v) const
	288	{ throw facet_error(); return iter_type(NULL); }
	289
	290	virtual iter_type
	291	do_put(iter_type, ios_base&, char_type __fill, long __v) const
	292	{ throw facet_error(); return iter_type(NULL); }
12841eb3	293
9b8d9ac3 PC	294	virtual iter_type
	295	do_put(iter_type, ios_base&, char_type __fill, unsigned long) const
	296	{ throw facet_error(); return iter_type(NULL); }
12841eb3 BK	297
12841eb3 BK	298	#ifdef _GLIBCXX_USE_LONG_LONG
9b8d9ac3 PC	299	virtual iter_type
	300	do_put(iter_type, ios_base&, char_type __fill, long long __v) const
	301	{ throw facet_error(); return iter_type(NULL); }
12841eb3	302
9b8d9ac3 PC	303	virtual iter_type
	304	do_put(iter_type, ios_base&, char_type __fill, unsigned long long) const
	305	{ throw facet_error(); return iter_type(NULL); }
12841eb3	306	#endif
9b8d9ac3 PC	307
	308	virtual iter_type
	309	do_put(iter_type, ios_base&, char_type __fill, double __v) const
	310	{ throw facet_error(); return iter_type(NULL); }
12841eb3	311
9b8d9ac3 PC	312	virtual iter_type
	313	do_put(iter_type, ios_base&, char_type __fill, long double __v) const
	314	{ throw facet_error(); return iter_type(NULL); }
	315
	316	virtual iter_type
	317	do_put(iter_type, ios_base&, char_type __fill, const void* __v) const
	318	{ throw facet_error(); return iter_type(NULL); }
	319	};
12841eb3	320
9b8d9ac3 PC	321	typedef fail_num_put<char> fail_num_put_char;
	322	#ifdef _GLIBCXX_USE_WCHAR_T
	323	typedef fail_num_put<wchar_t> fail_num_put_wchar_t;
	324	#endif
aecf642c	325	}; // namespace __gnu_test
46c4e5d6	326
3d7c150e	327	#endif // _GLIBCXX_TESTSUITE_IO_H
46c4e5d6	328