fusion/test/sequence/io.cpp

132 lines
3.6 KiB
C++

/*=============================================================================
Copyright (C) 1999-2003 Jaakko Jarvi
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#include <boost/detail/lightweight_test.hpp>
#include <boost/fusion/container/vector/vector.hpp>
#include <boost/fusion/container/generation/make_vector.hpp>
#include <boost/fusion/sequence/comparison/equal_to.hpp>
#include <boost/fusion/sequence/io/out.hpp>
#include <boost/fusion/sequence/io/in.hpp>
#include <fstream>
#include <iterator>
#include <algorithm>
#include <string>
#if defined BOOST_NO_STRINGSTREAM
# include <strstream>
#else
# include <sstream>
#endif
using boost::fusion::vector;
using boost::fusion::make_vector;
using boost::fusion::tuple_close;
using boost::fusion::tuple_open;
using boost::fusion::tuple_delimiter;
#if defined BOOST_NO_STRINGSTREAM
using std::ostrstream;
using std::istrstream;
typedef ostrstream useThisOStringStream;
typedef istrstream useThisIStringStream;
#else
using std::ostringstream;
using std::istringstream;
typedef ostringstream useThisOStringStream;
typedef istringstream useThisIStringStream;
#endif
using std::endl;
using std::ofstream;
using std::ifstream;
using std::string;
int
main()
{
using boost::fusion::tuple_close;
using boost::fusion::tuple_open;
using boost::fusion::tuple_delimiter;
useThisOStringStream os1;
// Set format [a, b, c] for os1
os1 << tuple_open('[');
os1 << tuple_close(']');
os1 << tuple_delimiter(',');
os1 << make_vector(1, 2, 3);
BOOST_TEST (os1.str() == std::string("[1,2,3]") );
{
useThisOStringStream os2;
// Set format (a:b:c) for os2;
os2 << tuple_open('(');
os2 << tuple_close(')');
os2 << tuple_delimiter(':');
os2 << make_vector("TUPU", "HUPU", "LUPU", 4.5);
BOOST_TEST (os2.str() == std::string("(TUPU:HUPU:LUPU:4.5)") );
}
{
useThisOStringStream os2;
// Set format (a:b:c) for os2;
os2 << tuple_open('(');
os2 << tuple_close(')');
os2 << tuple_delimiter(':');
// overwrite previous setting
os2 << tuple_open("< ");
os2 << tuple_close('>');
os2 << tuple_delimiter(", ");
os2 << make_vector("TUPU", "HUPU", "LUPU", 4.5);
BOOST_TEST (os2.str() == std::string("< TUPU, HUPU, LUPU, 4.5>") );
}
// The format is still [a, b, c] for os1
os1 << make_vector(1, 2, 3);
BOOST_TEST (os1.str() == std::string("[1,2,3][1,2,3]") );
std::ofstream tmp("temp.tmp");
tmp << make_vector("One", "Two", 3);
tmp << tuple_delimiter(':');
tmp << make_vector(1000, 2000, 3000) << endl;
tmp.close();
// When reading tuples from a stream, manipulators must be set correctly:
ifstream tmp3("temp.tmp");
vector<string, string, int> j;
tmp3 >> j;
BOOST_TEST (tmp3.good() );
tmp3 >> tuple_delimiter(':');
vector<int, int, int> i;
tmp3 >> i;
BOOST_TEST (tmp3.good() );
tmp3.close();
// reading vector<int, int, int> in format (a b c);
useThisIStringStream is("(100 200 300)");
vector<int, int, int> ti;
BOOST_TEST(!!(is >> ti));
BOOST_TEST(ti == make_vector(100, 200, 300));
// Note that strings are problematic:
// writing a tuple on a stream and reading it back doesn't work in
// general. If this is wanted, some kind of a parseable string class
// should be used.
return boost::report_errors();
}