Sprout/sprout/workaround/recursive_function_template.hpp
2012-11-12 13:29:56 +09:00

39 lines
1.6 KiB
C++

#ifndef SPROUT_WORKAROUND_RECURSIVE_FUNCTION_TEMPLATE_HPP
#define SPROUT_WORKAROUND_RECURSIVE_FUNCTION_TEMPLATE_HPP
#include <sprout/config.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/preprocessor/stringize.hpp>
//
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT
//
#ifndef SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT
# define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT 512
#endif
//
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE_DECL
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK_DECL
//
#define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE_DECL(depth) \
typename sprout::enabler_if<((depth) < SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT - 1)>::type
#define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK_DECL(depth) \
typename sprout::enabler_if<((depth) >= SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT - 1)>::type
//
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK
//
#define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE(depth) \
SPROUT_RECURSIVE_FUNCTION_TEMPLATE_CONTINUE_DECL(depth) = sprout::enabler
#define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK(depth) \
SPROUT_RECURSIVE_FUNCTION_TEMPLATE_BREAK_DECL(depth) = sprout::enabler
//
// SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_EXCEEDED_MESSAGE
//
#define SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_EXCEEDED_MESSAGE \
"recursive template instantiation exceeded maximum depth of " SPROUT_PP_STRINGIZE(SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT)
#endif // #ifndef SPROUT_WORKAROUND_RECURSIVE_FUNCTION_TEMPLATE_HPP