b2dad0e372
2000-04-21 Benjamin Kosnik <bkoz@redhat.com> * libstdc++-v3: New directory. From-SVN: r33317
258 lines
6.2 KiB
C++
258 lines
6.2 KiB
C++
// 1999-10-11 bkoz
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// Copyright (C) 1999, 2000 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 2, 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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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// 27.5.2 template class basic_streambuf
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#include <streambuf>
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#include <ostream>
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#ifdef DEBUG_ASSERT
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#include <assert.h>
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#endif
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class testbuf : public std::streambuf
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{
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public:
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// Typedefs:
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typedef std::streambuf::traits_type traits_type;
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typedef std::streambuf::char_type char_type;
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testbuf(): std::streambuf()
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{ _M_mode = (std::ios_base::in | std::ios_base::out); }
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bool
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check_pointers()
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{
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bool test = true;
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test &= this->eback() == NULL;
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test &= this->gptr() == NULL;
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test &= this->egptr() == NULL;
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test &= this->pbase() == NULL;
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test &= this->pptr() == NULL;
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test &= this->epptr() == NULL;
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return test;
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}
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int_type
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pub_uflow()
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{ return (this->uflow()); }
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int_type
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pub_overflow(int_type __c = traits_type::eof())
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{ return (this->overflow(__c)); }
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int_type
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pub_pbackfail(int_type __c)
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{ return (this->pbackfail(__c)); }
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void
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pub_setg(char* beg, char* cur, char *end)
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{ this->setg(beg, cur, end); }
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void
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pub_setp(char* beg, char* end)
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{ this->setp(beg, end); }
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protected:
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int_type
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underflow()
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{
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int_type __retval = traits_type::eof();
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if (this->gptr() < this->egptr())
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__retval = traits_type::not_eof(0);
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return __retval;
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}
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};
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void test01()
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{
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typedef testbuf::traits_type traits_type;
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typedef testbuf::int_type int_type;
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bool test = true;
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char* lit01 = "chicago underground trio/possible cube on delmark";
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testbuf buf01;
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// 27.5.2.1 basic_streambuf ctors
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// default ctor initializes
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// - all pointer members to null pointers
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// - locale to current global locale
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test &= buf01.check_pointers();
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test &= buf01.getloc() == std::locale();
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// 27.5.2.3.1 get area
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// 27.5.2.2.3 get area
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// 27.5.2.4.3 get area
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int i01 = 3;
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buf01.pub_setg(lit01, lit01, (lit01 + i01));
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test &= i01 == buf01.in_avail();
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test &= buf01.pub_uflow() == lit01[0];
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test &= buf01.sgetc() == traits_type::to_int_type(lit01[1]);
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test &= buf01.pub_uflow() == lit01[1];
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test &= buf01.sgetc() == traits_type::to_int_type(lit01[2]);
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test &= buf01.pub_uflow() == lit01[2];
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test &= buf01.sgetc() == traits_type::eof();
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// pbackfail
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buf01.pub_setg(lit01, lit01, (lit01 + i01));
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test &= i01 == buf01.in_avail();
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int_type intt01 = traits_type::to_int_type('b');
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test &= traits_type::eof() == buf01.pub_pbackfail(intt01);
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// overflow
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test &= traits_type::eof() == buf01.pub_overflow(intt01);
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test &= traits_type::eof() == buf01.pub_overflow();
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test &= buf01.sgetc() == traits_type::to_int_type(lit01[0]);
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// sputn/xsputn
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char* lit02 = "isotope 217: the unstable molecule on thrill jockey";
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int i02 = strlen(lit02);
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char carray[i02 + 1];
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memset(carray, 0, i02 + 1);
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buf01.pub_setp(carray, (carray + i02));
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buf01.sputn(lit02, 0);
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test &= carray[0] == 0;
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test &= lit02[0] == 'i';
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buf01.sputn(lit02, 1);
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test &= lit02[0] == carray[0];
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test &= lit02[1] == 's';
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test &= carray[1] == 0;
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buf01.sputn(lit02 + 1, 10);
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test &= memcmp(lit02, carray, 10) == 0;
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buf01.sputn(lit02 + 11, 20);
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test &= memcmp(lit02, carray, 30) == 0;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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void test02()
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{
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typedef testbuf::traits_type traits_type;
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typedef testbuf::int_type int_type;
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bool test = true;
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char* lit01 = "chicago underground trio/possible cube on delmark";
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testbuf buf01;
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// 27.5.2.1 basic_streambuf ctors
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// default ctor initializes
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// - all pointer members to null pointers
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// - locale to current global locale
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test &= buf01.check_pointers();
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test &= buf01.getloc() == std::locale();
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// 27.5.2.2.5 Put area
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size_t i01 = traits_type::length(lit01);
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char carray01[i01];
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memset(carray01, 0, i01);
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buf01.pub_setg(lit01, lit01, lit01 + i01);
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buf01.sgetn(carray01, 0);
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test &= carray01[0] == 0;
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buf01.sgetn(carray01, 1);
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test &= carray01[0] == 'c';
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buf01.sgetn(carray01 + 1, i01 - 1);
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test &= carray01[0] == 'c';
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test &= carray01[1] == 'h';
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test &= carray01[i01 - 1] == 'k';
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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// test03
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// http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00151.html
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template<typename charT, typename traits = std::char_traits<charT> >
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class basic_nullbuf : public std::basic_streambuf<charT, traits>
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{
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protected:
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virtual int_type
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overflow(int_type c)
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{ return traits::not_eof(c); }
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};
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typedef basic_nullbuf<char> nullbuf;
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typedef basic_nullbuf<wchar_t> wnullbuf;
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template<typename T>
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char
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print(const T& x)
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{
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nullbuf ob;
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std::ostream out(&ob);
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out << x << std::endl;
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return (!out ? '0' : '1');
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}
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void test03()
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{
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bool test = true;
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const std::string control01("11111");
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std::string test01;
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test01 += print(true);
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test01 += print(3.14159);
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test01 += print(10);
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test01 += print('x');
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test01 += print("pipo");
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test &= test01 == control01;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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int main()
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{
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test01();
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test02();
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test03();
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return 0;
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}
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