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sprout/weed.hpp 追加

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bolero-MURAKAMI 2011-11-13 17:54:38 +09:00
parent 8103682fdb
commit ecfc2b297a
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162
sprout/weed/parser/string/string.hpp Normal file
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#ifndef SPROUT_WEED_PARSER_STRING_STRING_HPP
#define SPROUT_WEED_PARSER_STRING_STRING_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/string.hpp>
#include <sprout/fixed_container/begin.hpp>
#include <sprout/fixed_container/end.hpp>
#include <sprout/fixed_container/size.hpp>
#include <sprout/iterator/next.hpp>
#include <sprout/weed/unused.hpp>
#include <sprout/weed/parser_result.hpp>
#include <sprout/weed/parser/parser_base.hpp>
#include <sprout/weed/parser/lit.hpp>
#include <sprout/weed/traits/type/is_c_str.hpp>
#include <sprout/weed/traits/type/is_string.hpp>
#include HDR_ALGORITHM_SSCRISK_CEL_OR_SPROUT_DETAIL
#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT_DETAIL
namespace sprout {
namespace weed {
//
// lit_str_p
//
template<typename T>
struct lit_str_p
: public sprout::weed::parser_base
{
public:
template<typename Context, typename Iterator>
struct attribute {
public:
typedef sprout::weed::unused type;
};
template<typename Context, typename Iterator>
struct result {
public:
typedef sprout::weed::parser_result<Iterator, typename attribute<Context, Iterator>::type> type;
};
private:
T t_;
public:
lit_str_p() = default;
SPROUT_CONSTEXPR explicit lit_str_p(T const& t)
: t_(t)
{}
template<typename Context, typename Iterator>
SPROUT_CONSTEXPR typename result<Context, Iterator>::type operator()(
Iterator first,
Iterator last,
Context const&
) const
{
typedef typename result<Context, Iterator>::type result_type;
typedef typename attribute<Context, Iterator>::type attribute_type;
return NS_SSCRISK_CEL_OR_SPROUT_DETAIL::distance(first, last) >= sprout::size(t_)
&&NS_SSCRISK_CEL_OR_SPROUT_DETAIL::equal(sprout::begin(t_), sprout::end(t_), first)
? result_type(true, sprout::next(first, sprout::size(t_)), attribute_type())
: result_type(false, first, typename attribute<Context, Iterator>::type())
;
}
};
//
// lit_g
//
template<typename T>
struct lit_g::eval<
T,
typename std::enable_if<
sprout::weed::traits::is_c_str<T>::value
>::type
> {
public:
typedef sprout::weed::lit_str_p<
typename sprout::weed::detail::c_str_as_string<T const>::type
> result_type;
public:
SPROUT_CONSTEXPR result_type operator()(T const& t) const {
return result_type(sprout::to_string(t));
}
};
template<typename T>
struct lit_g::eval<
T,
typename std::enable_if<
sprout::weed::traits::is_string<T>::value
>::type
> {
public:
typedef sprout::weed::lit_str_p<T> result_type;
public:
SPROUT_CONSTEXPR result_type operator()(T const& t) const {
return result_type(t);
}
};
//
// str_p
//
template<typename T>
struct str_p
: public sprout::weed::parser_base
{
public:
template<typename Context, typename Iterator>
struct attribute {
public:
typedef T type;
};
template<typename Context, typename Iterator>
struct result {
public:
typedef sprout::weed::parser_result<Iterator, typename attribute<Context, Iterator>::type> type;
};
private:
T t_;
public:
str_p() = default;
SPROUT_CONSTEXPR explicit str_p(T const& t)
: t_(t)
{}
template<typename Context, typename Iterator>
SPROUT_CONSTEXPR typename result<Context, Iterator>::type operator()(
Iterator first,
Iterator last,
Context const&
) const
{
typedef typename result<Context, Iterator>::type result_type;
typedef typename attribute<Context, Iterator>::type attribute_type;
return NS_SSCRISK_CEL_OR_SPROUT_DETAIL::distance(first, last) >= sprout::size(t_)
&&NS_SSCRISK_CEL_OR_SPROUT_DETAIL::equal(sprout::begin(t_), sprout::end(t_), first)
? result_type(true, sprout::next(first, sprout::size(t_)), attribute_type())
: result_type(false, first, typename attribute<Context, Iterator>::type())
;
}
};
//
// string
//
template<typename T>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::weed::traits::is_c_str<T const>::value,
sprout::weed::str_p<
typename sprout::weed::detail::c_str_as_string<T const>::type
>
>::type string(T const& t) {
return sprout::weed::str_p<
typename sprout::weed::detail::c_str_as_string<T const>::type
>(sprout::to_string(t));
}
template<typename T>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::weed::traits::is_string<T>::value,
sprout::weed::str_p<T>
>::type string(T const& t) {
return sprout::weed::str_p<T>(t);
}
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_PARSER_STRING_STRING_HPP