Sprout/sprout/weed/traits/parser/attribute_of.hpp
2011-11-13 17:54:38 +09:00

115 lines
4.8 KiB
C++

#ifndef SPROUT_WEED_TRAITS_PARSER_ATTRIBUTE_OF_HPP
#define SPROUT_WEED_TRAITS_PARSER_ATTRIBUTE_OF_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/weed/unused.hpp>
#include <sprout/weed/expr/expr.hpp>
#include <sprout/weed/expr/tag.hpp>
#include <sprout/weed/traits/type/is_char_type.hpp>
#include <sprout/weed/traits/type/is_c_str.hpp>
#include <sprout/weed/traits/type/is_string.hpp>
#include <sprout/weed/traits/expr/is_expr.hpp>
#include <sprout/weed/traits/parser/is_parser.hpp>
#include <sprout/weed/traits/parser/limit_of.hpp>
#include <sprout/weed/attr_cnv/result_of/times.hpp>
#include <sprout/weed/attr_cnv/result_of/shift_left.hpp>
#include <sprout/weed/attr_cnv/result_of/modulus.hpp>
#include <sprout/weed/attr_cnv/result_of/bitwise_or.hpp>
namespace sprout {
namespace weed {
namespace traits {
//
// attribute_of
//
template<typename T, typename Iterator, typename Context, typename = void>
struct attribute_of;
template<typename T, typename Iterator, typename Context>
struct attribute_of<T const, Iterator, Context>
: public sprout::weed::traits::attribute_of<T, Iterator, Context>
{};
template<typename T, typename Iterator, typename Context>
struct attribute_of<
T,
Iterator,
Context,
typename std::enable_if<
sprout::weed::traits::is_parser<T>::value
&& !sprout::weed::traits::is_expr<T>::value
&& !sprout::weed::traits::is_char_type<T>::value
&& !sprout::weed::traits::is_c_str<T>::value
&& !sprout::weed::traits::is_string<T>::value
>::type
> {
public:
typedef typename T::template attribute<Context, Iterator>::type type;
};
template<typename T, typename Iterator, typename Context>
struct attribute_of<
T,
Iterator,
Context,
typename std::enable_if<
sprout::weed::traits::is_char_type<T>::value
|| sprout::weed::traits::is_c_str<T>::value
|| sprout::weed::traits::is_string<T>::value
>::type
> {
public:
typedef sprout::weed::unused type;
};
template<typename Arg, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::terminal, Arg>, Iterator, Context>
: public sprout::weed::traits::attribute_of<Arg, Iterator, Context>
{};
template<typename Arg, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::unary_plus, Arg>, Iterator, Context>
: public sprout::weed::attr_cnv::result_of::times<
sprout::weed::traits::limit_of<Arg, Iterator, Context>::value,
typename sprout::weed::traits::attribute_of<Arg, Iterator, Context>::type
>
{};
template<typename Arg, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::dereference, Arg>, Iterator, Context>
: public sprout::weed::attr_cnv::result_of::times<
sprout::weed::traits::limit_of<Arg, Iterator, Context>::value,
typename sprout::weed::traits::attribute_of<Arg, Iterator, Context>::type
>
{};
template<typename Arg, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::address_of, Arg>, Iterator, Context> {
public:
typedef sprout::weed::unused type;
};
template<typename Arg, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::logical_not, Arg>, Iterator, Context> {
public:
typedef sprout::weed::unused type;
};
template<typename Arg1, typename Arg2, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::shift_left, Arg1, Arg2>, Iterator, Context>
: public sprout::weed::attr_cnv::result_of::shift_left<
typename sprout::weed::traits::attribute_of<Arg1, Iterator, Context>::type,
typename sprout::weed::traits::attribute_of<Arg2, Iterator, Context>::type
>
{};
template<typename Arg1, typename Arg2, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::modulus, Arg1, Arg2>, Iterator, Context>
: public sprout::weed::attr_cnv::result_of::modulus<
sprout::weed::traits::limit_of<Arg1, Iterator, Context>::value,
typename sprout::weed::traits::attribute_of<Arg1, Iterator, Context>::type
>
{};
template<typename Arg1, typename Arg2, typename Iterator, typename Context>
struct attribute_of<sprout::weed::expr<sprout::weed::tag::bitwise_or, Arg1, Arg2>, Iterator, Context>
: public sprout::weed::attr_cnv::result_of::bitwise_or<
typename sprout::weed::traits::attribute_of<Arg1, Iterator, Context>::type,
typename sprout::weed::traits::attribute_of<Arg2, Iterator, Context>::type
>
{};
} // namespace traits
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_TRAITS_PARSER_ATTRIBUTE_OF_HPP