I was looking through the iostreams sources and came across this in
boost/iostreams/concepts.hpp:
//------Definitions of helper templates for multi-character filter
cncepts----//
template
struct multichar_filter : filter {
struct category : filter::category, multichar_tag { };
};
template
struct multichar_wfilter : multichar_filter { };
typedef multichar_filter<input> multichar_input_filter;
typedef multichar_filter<input> multichar_input_wfilter;
typedef multichar_filter<output> multichar_output_filter;
typedef multichar_filter<output> multichar_output_wfilter;
typedef multichar_filter multichar_dual_use_filter;
typedef multichar_filter multichar_dual_use_wfilter;
//--------------------------------------------------------------------------
--//
It seems to me that the wide versions of these typedefs should be defined
using multichar_wfilter, making the typedefs appear as follows:
typedef multichar_filter<input> multichar_input_filter;
typedef multichar_wfilter<input> multichar_input_wfilter;
typedef multichar_filter<output> multichar_output_filter;
typedef multichar_wfilter<output> multichar_output_wfilter;
typedef multichar_filter multichar_dual_use_filter;
typedef multichar_wfilter multichar_dual_use_wfilter;
Also, the default arguments in multichar_filter and multichar_wfilter
termplates aren't wrapped in BOOST_IOSTREAMS_DEFAULT_ARG(), unlike the other
ones in this file. Seems like they should be, for consistency if nothing
else.
Chad
