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change is_(map|container) and remove needless trait

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This commit is contained in:
ToruNiina 2018-05-05 11:36:47 +09:00
parent 4287160254
commit 117549bf70
2 changed files with 29 additions and 37 deletions
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9
toml/traits.hpp
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@ -58,15 +58,6 @@ struct has_resize_method : decltype(has_resize_method_impl::check<T>(nullptr)){}
#undef decltype(...)
#endif
template<typename T>
struct is_container : std::integral_constant<bool,
has_iterator<T>::value && has_value_type<T>::value>{};
template<typename T>
struct is_map : std::integral_constant<bool,
has_iterator<T>::value && has_key_type<T>::value &&
has_mapped_type<T>::value>{};
}// detail
}//toml
#endif // TOML_TRAITS

57
toml/value.hpp
View File

@ -99,33 +99,6 @@ constexpr inline bool is_valid(value_t vt)
return vt != value_t::Unknown;
}
template<typename T> struct is_toml_array : std::false_type{};
template<> struct is_toml_array<toml::Array> : std::true_type {};
template<typename T> struct is_toml_table : std::false_type{};
template<> struct is_toml_table<toml::Table> : std::true_type {};
struct is_key_convertible_impl
{
template<typename T>
static std::is_convertible<typename T::key_type, toml::key>
check(typename T::key_type*);
template<typename T> static std::false_type check(...);
};
/// Intel C++ compiler can not use decltype in parent class declaration, here
/// is a hack to work around it. https://stackoverflow.com/a/23953090/4692076
#ifdef __INTEL_COMPILER
#define decltype(...) std::enable_if<true, decltype(__VA_ARGS__)>::type
#endif
template<typename T>
struct is_key_convertible : decltype(is_key_convertible_impl::check<T>(nullptr)){};
#ifdef __INTEL_COMPILER
#undef decltype(...)
#endif
template<value_t t> struct toml_default_type{};
template<> struct toml_default_type<value_t::Boolean >{typedef Boolean type;};
template<> struct toml_default_type<value_t::Integer >{typedef Integer type;};
@ -137,6 +110,33 @@ template<> struct toml_default_type<value_t::Table >{typedef Table type;};
template<> struct toml_default_type<value_t::Empty >{typedef void type;};
template<> struct toml_default_type<value_t::Unknown >{typedef void type;};
template<typename T>
struct is_exact_toml_type : disjunction<
std::is_same<T, Boolean >,
std::is_same<T, Integer >,
std::is_same<T, Float >,
std::is_same<T, String >,
std::is_same<T, Datetime>,
std::is_same<T, Array >,
std::is_same<T, Table >
>{};
template<typename T>
struct is_map : conjunction<
has_iterator<T>,
has_value_type<T>,
has_key_type<T>,
has_mapped_type<T>
>{};
template<typename T>
struct is_container : conjunction<
negation<is_map<T>>,
negation<std::is_same<T, String>>,
has_iterator<T>,
has_value_type<T>
>{};
struct storage_base
{
storage_base(): type(toml::value_t::Empty){}
@ -148,7 +148,8 @@ struct storage_base
template<typename T>
struct storage : public storage_base
{
static_assert(is_toml_array<T>::value || is_toml_table<T>::value,
static_assert(std::is_same<T, toml::Array>::value ||
std::is_same<T, toml::Table>::value,
"toml::detail::storage is for toml::Array or toml::Table!");
typedef T value_type;