头文件
boost/core/typeinfo.hpp
作用
与std::typeinfo 功能一致
举例
#include <boost/core/typeinfo.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
int main()
{
BOOST_TEST( BOOST_CORE_TYPEID( int ) == BOOST_CORE_TYPEID( int ) );
BOOST_TEST( BOOST_CORE_TYPEID( int ) != BOOST_CORE_TYPEID( long ) );
BOOST_TEST( BOOST_CORE_TYPEID( int ) != BOOST_CORE_TYPEID( void ) );
boost::core::typeinfo const & ti = BOOST_CORE_TYPEID( int );
boost::core::typeinfo const * pti = &BOOST_CORE_TYPEID( int );
BOOST_TEST( *pti == ti );
BOOST_TEST( ti == ti );
BOOST_TEST( !( ti != ti ) );
BOOST_TEST( !ti.before( ti ) );
char const * nti = ti.name();
std::cout << nti << std::endl;
boost::core::typeinfo const & tv = BOOST_CORE_TYPEID( void );
boost::core::typeinfo const * ptv = &BOOST_CORE_TYPEID( void );
BOOST_TEST( *ptv == tv );
BOOST_TEST( tv == tv );
BOOST_TEST( !( tv != tv ) );
BOOST_TEST( !tv.before( tv ) );
char const * ntv = tv.name();
std::cout << ntv << std::endl;
BOOST_TEST( ti != tv );
BOOST_TEST( !( ti == tv ) );
BOOST_TEST( ti.before( tv ) != tv.before( ti ) );
return boost::report_errors();
}
源代码
#include <boost/current_function.hpp>
#include <functional>
namespace boost
{
namespace core
{
class typeinfo
{
private:
typeinfo( typeinfo const& );
typeinfo& operator=( typeinfo const& );
char const * name_;
public:
explicit typeinfo( char const * name ): name_( name )
{
}
bool operator==( typeinfo const& rhs ) const
{
return this == &rhs;
}
bool operator!=( typeinfo const& rhs ) const
{
return this != &rhs;
}
bool before( typeinfo const& rhs ) const
{
return std::less< typeinfo const* >()( this, &rhs );
}
char const* name() const
{
return name_;
}
};
inline char const * demangled_name( core::typeinfo const & ti )
{
return ti.name();
}
#define BOOST_CORE_TYPEID(T) typeid(T)
} // namespace core