Re: [Boost-users] Preprocessor problems

From: Robert Dailey (rcdailey_at_[hidden])
Date: 2008-08-11 13:31:30

For those interested in the entire file (Somewhat large), here you go:

#ifndef BOOST_PP_IS_ITERATING
#    ifndef vfx_input_InputSource_hpp__
#    define vfx_input_InputSource_hpp__

#    include <boost/preprocessor/iterate.hpp>
#    include <boost/preprocessor/repetition.hpp>
#    include <boost/preprocessor/logical.hpp>
#    include <boost/preprocessor/punctuation.hpp>
#    include <boost/function.hpp>
#    include <boost/signals.hpp>

#    include <vfx/input/include/detail/no_param.hpp>

#    ifndef MAX_PARAMETERS
#        define MAX_PARAMETERS 5
#    endif

namespace vfx
{
namespace input
{
    template<typename t_return, BOOST_PP_ENUM_PARAMS(MAX_PARAMETERS,
typename t_param)>
    class InputSource;

}} // end namespace vfx::input

#    define BOOST_PP_ITERATION_LIMITS (1, MAX_PARAMETERS)
#    define BOOST_PP_FILENAME_1 "InputSource.hpp"
#    include BOOST_PP_ITERATE()
#    endif // vfx_input_InputSource_hpp__
#else
#    define i BOOST_PP_ITERATION()
#    define INPUT_repeat(z, n, user) user

namespace vfx
{
namespace input
{
    template<typename t_return, BOOST_PP_ENUM_PARAMS(i, typename t_param)>
    class InputSource<
        t_return,
        BOOST_PP_ENUM_PARAMS( i, t_param )
        BOOST_PP_COMMA_IF( BOOST_PP_AND(BOOST_PP_NOT_EQUAL(i, 0),
BOOST_PP_NOT_EQUAL(i, MAX_PARAMETERS)) )
        BOOST_PP_ENUM( BOOST_PP_SUB(MAX_PARAMETERS, i), INPUT_repeat,
detail::no_param )
    >
    {
    private:
        typedef typename boost::function<t_return (BOOST_PP_ENUM_PARAMS(i,
t_param))> FunctionType;
        typedef typename boost::signal<t_return (BOOST_PP_ENUM_PARAMS(i,
t_param))> SignalType;

        SignalType m_observers;

    public:
        void Publish( BOOST_PP_ENUM_BINARY_PARAMS(i, const t_param, &param)
)
        {
            m_observers(BOOST_PP_ENUM_PARAMS(i, param));
        }

        void Subscribe( FunctionType slot )
        {
            m_observers.connect( slot );
        }
    };

}} // end namespace vfx::input

#    undef i
#endif // BOOST_PP_IS_ITERATING