[Boost-users] serialization of boolean values hardcoded to '1' and '0'

From: Andrew McDonald (Andrew.McDonald_at_[hidden])
Date: 2008-07-11 13:11:12

I was wondering why in the archive library the input and output text streams are hardcoded with the boolalpha bit as unset, e.g. (is >> std::noboolalpha;)?

Specifically the code is in the directory: boost_1_35_0/boost/archive/impl/

In basic_text_iprimitive.ipp 

template<class IStream>
BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
basic_text_iprimitive<IStream>::basic_text_iprimitive(
    IStream  &is_,
    bool no_codecvt
) : 
    is(is_),
    flags_saver(is_),
    precision_saver(is_),
    archive_locale(NULL),
    locale_saver(is_)
{
    if(! no_codecvt){
        archive_locale.reset(
            add_facet(
                std::locale::classic(), 
                new codecvt_null<BOOST_DEDUCED_TYPENAME IStream::char_type>
            )
        );
        is.imbue(* archive_locale);
    }
    is >> std::noboolalpha;
}

and basic_text_oprimitive.ipp

template<class OStream>
BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
basic_text_oprimitive<OStream>::basic_text_oprimitive(
    OStream & os_,
    bool no_codecvt
) : 
    os(os_),
    flags_saver(os_),
    precision_saver(os_),
    archive_locale(NULL),
    locale_saver(os_)
{
    if(! no_codecvt){
        archive_locale.reset(
            add_facet(
                std::locale::classic(), 
                new codecvt_null<BOOST_DEDUCED_TYPENAME OStream::char_type>
            )
        );
        os.imbue(* archive_locale);
    }
    os << std::noboolalpha;
}

Andrew McDonald
Software Engineer
 
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