255 lines
8.5 KiB
C++
255 lines
8.5 KiB
C++
|
// (C) Copyright Gennadiy Rozental 2001.
|
||
|
|
// 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)
|
||
|
|
|
||
|
|
// See http://www.boost.org/libs/test for the library home page.
|
||
|
|
//
|
||
|
|
// File : $RCSfile$
|
||
|
|
//
|
||
|
|
// Version : $Revision: 74248 $
|
||
|
|
//
|
||
|
|
// Description : defines level of indiration facilitating workarounds for non printable types
|
||
|
|
// ***************************************************************************
|
||
|
|
|
||
|
|
#ifndef BOOST_TEST_TOOLS_IMPL_COMMON_HPP_012705GER
|
||
|
|
#define BOOST_TEST_TOOLS_IMPL_COMMON_HPP_012705GER
|
||
|
|
|
||
|
|
// Boost.Test
|
||
|
|
#include <boost/test/detail/config.hpp>
|
||
|
|
#include <boost/test/detail/global_typedef.hpp>
|
||
|
|
|
||
|
|
// Boost
|
||
|
|
#include <boost/mpl/or.hpp>
|
||
|
|
#include <boost/static_assert.hpp>
|
||
|
|
#include <boost/type_traits/is_array.hpp>
|
||
|
|
#include <boost/type_traits/is_function.hpp>
|
||
|
|
#include <boost/type_traits/is_abstract.hpp>
|
||
|
|
#include <boost/type_traits/has_left_shift.hpp>
|
||
|
|
|
||
|
|
#include <ios>
|
||
|
|
#include <iostream>
|
||
|
|
#include <limits>
|
||
|
|
|
||
|
|
#if !defined(BOOST_NO_CXX11_NULLPTR)
|
||
|
|
#include <cstddef>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <boost/test/detail/suppress_warnings.hpp>
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace test_tools {
|
||
|
|
namespace tt_detail {
|
||
|
|
|
||
|
|
// ************************************************************************** //
|
||
|
|
// ************** boost_test_print_type ************** //
|
||
|
|
// ************************************************************************** //
|
||
|
|
|
||
|
|
namespace impl {
|
||
|
|
template <class T>
|
||
|
|
std::ostream& boost_test_print_type(std::ostream& ostr, T const& t) {
|
||
|
|
BOOST_STATIC_ASSERT_MSG( (boost::has_left_shift<std::ostream,T>::value),
|
||
|
|
"Type has to implement operator<< to be printable");
|
||
|
|
ostr << t;
|
||
|
|
return ostr;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct boost_test_print_type_impl {
|
||
|
|
template <class R>
|
||
|
|
std::ostream& operator()(std::ostream& ostr, R const& r) const {
|
||
|
|
return boost_test_print_type(ostr, r);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
// To avoid ODR violations, see N4381
|
||
|
|
template <class T> struct static_const { static const T value; };
|
||
|
|
template <class T> const T static_const<T>::value = T();
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
static const impl::boost_test_print_type_impl& boost_test_print_type =
|
||
|
|
static_const<impl::boost_test_print_type_impl>::value;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ************************************************************************** //
|
||
|
|
// ************** print_log_value ************** //
|
||
|
|
// ************************************************************************** //
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
struct print_log_value {
|
||
|
|
void operator()( std::ostream& ostr, T const& t )
|
||
|
|
{
|
||
|
|
typedef typename mpl::or_<is_array<T>,is_function<T>,is_abstract<T> >::type cant_use_nl;
|
||
|
|
|
||
|
|
std::streamsize old_precision = set_precision( ostr, cant_use_nl() );
|
||
|
|
|
||
|
|
//ostr << t;
|
||
|
|
using boost::test_tools::tt_detail::boost_test_print_type;
|
||
|
|
boost_test_print_type(ostr, t);
|
||
|
|
|
||
|
|
if( old_precision != (std::streamsize)-1 )
|
||
|
|
ostr.precision( old_precision );
|
||
|
|
}
|
||
|
|
|
||
|
|
std::streamsize set_precision( std::ostream& ostr, mpl::false_ )
|
||
|
|
{
|
||
|
|
if( std::numeric_limits<T>::is_specialized && std::numeric_limits<T>::radix == 2 )
|
||
|
|
return ostr.precision( 2 + std::numeric_limits<T>::digits * 301/1000 );
|
||
|
|
else if ( std::numeric_limits<T>::is_specialized && std::numeric_limits<T>::radix == 10 ) {
|
||
|
|
#ifdef BOOST_NO_CXX11_NUMERIC_LIMITS
|
||
|
|
// (was BOOST_NO_NUMERIC_LIMITS_LOWEST but now deprecated).
|
||
|
|
// No support for std::numeric_limits<double>::max_digits10,
|
||
|
|
// so guess that a couple of guard digits more than digits10 will display any difference.
|
||
|
|
return ostr.precision( 2 + std::numeric_limits<T>::digits10 );
|
||
|
|
#else
|
||
|
|
// std::numeric_limits<double>::max_digits10; IS supported.
|
||
|
|
// Any noisy or guard digits needed to display any difference are included in max_digits10.
|
||
|
|
return ostr.precision( std::numeric_limits<T>::max_digits10 );
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
// else if T is not specialized for std::numeric_limits<>,
|
||
|
|
// then will just get the default precision of 6 digits.
|
||
|
|
return (std::streamsize)-1;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::streamsize set_precision( std::ostream&, mpl::true_ ) { return (std::streamsize)-1; }
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
||
|
|
template<typename T, std::size_t N >
|
||
|
|
struct print_log_value< T[N] > {
|
||
|
|
void operator()( std::ostream& ostr, T const* t )
|
||
|
|
{
|
||
|
|
ostr << t;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<bool> {
|
||
|
|
void operator()( std::ostream& ostr, bool t );
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<char> {
|
||
|
|
void operator()( std::ostream& ostr, char t );
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<unsigned char> {
|
||
|
|
void operator()( std::ostream& ostr, unsigned char t );
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<wchar_t> {
|
||
|
|
void operator()( std::ostream& ostr, wchar_t t );
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<char const*> {
|
||
|
|
void operator()( std::ostream& ostr, char const* t );
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<>
|
||
|
|
struct BOOST_TEST_DECL print_log_value<wchar_t const*> {
|
||
|
|
void operator()( std::ostream& ostr, wchar_t const* t );
|
||
|
|
};
|
||
|
|
|
||
|
|
#if !defined(BOOST_NO_CXX11_NULLPTR)
|
||
|
|
template<>
|
||
|
|
struct print_log_value<std::nullptr_t> {
|
||
|
|
// declaration and definition is here because of #12969 https://svn.boost.org/trac10/ticket/12969
|
||
|
|
void operator()( std::ostream& ostr, std::nullptr_t /*t*/ ) {
|
||
|
|
ostr << "nullptr";
|
||
|
|
}
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
// ************************************************************************** //
|
||
|
|
// ************** print_helper ************** //
|
||
|
|
// ************************************************************************** //
|
||
|
|
// Adds level of indirection to the output operation, allowing us to customize
|
||
|
|
// it for types that do not support operator << directly or for any other reason
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
struct print_helper_t {
|
||
|
|
explicit print_helper_t( T const& t ) : m_t( t ) {}
|
||
|
|
|
||
|
|
T const& m_t;
|
||
|
|
};
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
|
||
|
|
// Borland suffers premature pointer decay passing arrays by reference
|
||
|
|
template<typename T, std::size_t N >
|
||
|
|
struct print_helper_t< T[N] > {
|
||
|
|
explicit print_helper_t( T const * t ) : m_t( t ) {}
|
||
|
|
|
||
|
|
T const * m_t;
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
inline print_helper_t<T>
|
||
|
|
print_helper( T const& t )
|
||
|
|
{
|
||
|
|
return print_helper_t<T>( t );
|
||
|
|
}
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
inline std::ostream&
|
||
|
|
operator<<( std::ostream& ostr, print_helper_t<T> const& ph )
|
||
|
|
{
|
||
|
|
print_log_value<T>()( ostr, ph.m_t );
|
||
|
|
|
||
|
|
return ostr;
|
||
|
|
}
|
||
|
|
|
||
|
|
//____________________________________________________________________________//
|
||
|
|
|
||
|
|
} // namespace tt_detail
|
||
|
|
|
||
|
|
// ************************************************************************** //
|
||
|
|
// ************** BOOST_TEST_DONT_PRINT_LOG_VALUE ************** //
|
||
|
|
// ************************************************************************** //
|
||
|
|
|
||
|
|
#define BOOST_TEST_DONT_PRINT_LOG_VALUE( the_type ) \
|
||
|
|
namespace boost{ namespace test_tools{ namespace tt_detail{ \
|
||
|
|
template<> \
|
||
|
|
struct print_log_value<the_type > { \
|
||
|
|
void operator()( std::ostream&, the_type const& ) {} \
|
||
|
|
}; \
|
||
|
|
}}} \
|
||
|
|
/**/
|
||
|
|
|
||
|
|
} // namespace test_tools
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#include <boost/test/detail/enable_warnings.hpp>
|
||
|
|
|
||
|
|
#endif // BOOST_TEST_TOOLS_IMPL_COMMON_HPP_012705GER
|