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meta: add meta_type::is_integral and meta_type::is_signed (close #884)

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This commit is contained in:
Michele Caini
2022-05-10 14:43:08 +02:00
parent dc07af6ad1
commit d44d1325fc
3 changed files with 35 additions and 7 deletions
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16
src/entt/meta/meta.hpp
View File

@@ -1025,6 +1025,22 @@ public:
return !!(node->traits & internal::meta_traits::is_arithmetic);
}
/**
* @brief Checks whether a type refers to an integral type or not.
* @return True if the underlying type is an integral type, false otherwise.
*/
[[nodiscard]] bool is_integral() const noexcept {
return !!(node->traits & internal::meta_traits::is_integral);
}
/**
* @brief Checks whether a type refers to a signed type or not.
* @return True if the underlying type is a signed type, false otherwise.
*/
[[nodiscard]] bool is_signed() const noexcept {
return !!(node->traits & internal::meta_traits::is_signed);
}
/**
* @brief Checks whether a type refers to an array type or not.
* @return True if the underlying type is an array type, false otherwise.

18
src/entt/meta/node.hpp
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@@ -29,13 +29,15 @@ enum class meta_traits : std::uint32_t {
is_const = 0x0001,
is_static = 0x0002,
is_arithmetic = 0x0004,
is_array = 0x0008,
is_enum = 0x0010,
is_class = 0x0020,
is_pointer = 0x0040,
is_meta_pointer_like = 0x0080,
is_meta_sequence_container = 0x0100,
is_meta_associative_container = 0x0200,
is_integral = 0x0008,
is_signed = 0x0010,
is_array = 0x0020,
is_enum = 0x0040,
is_class = 0x0080,
is_pointer = 0x0100,
is_meta_pointer_like = 0x0200,
is_meta_sequence_container = 0x0400,
is_meta_associative_container = 0x0800,
_entt_enum_as_bitmask
};
@@ -170,6 +172,8 @@ public:
{},
internal::meta_traits::is_none
| (std::is_arithmetic_v<Type> ? internal::meta_traits::is_arithmetic : internal::meta_traits::is_none)
| (std::is_integral_v<Type> ? internal::meta_traits::is_integral : internal::meta_traits::is_none)
| (std::is_signed_v<Type> ? internal::meta_traits::is_signed : internal::meta_traits::is_none)
| (std::is_array_v<Type> ? internal::meta_traits::is_array : internal::meta_traits::is_none)
| (std::is_enum_v<Type> ? internal::meta_traits::is_enum : internal::meta_traits::is_none)
| (std::is_class_v<Type> ? internal::meta_traits::is_class : internal::meta_traits::is_none)

8
test/entt/meta/meta_type.cpp
View File

@@ -235,6 +235,14 @@ TEST_F(MetaType, Traits) {
ASSERT_TRUE(entt::resolve<double>().is_arithmetic());
ASSERT_FALSE(entt::resolve<clazz_t>().is_arithmetic());
ASSERT_TRUE(entt::resolve<int>().is_integral());
ASSERT_FALSE(entt::resolve<double>().is_integral());
ASSERT_FALSE(entt::resolve<clazz_t>().is_integral());
ASSERT_TRUE(entt::resolve<long>().is_signed());
ASSERT_FALSE(entt::resolve<unsigned int>().is_signed());
ASSERT_FALSE(entt::resolve<clazz_t>().is_signed());
ASSERT_TRUE(entt::resolve<int[5]>().is_array());
ASSERT_TRUE(entt::resolve<int[5][3]>().is_array());
ASSERT_FALSE(entt::resolve<int>().is_array());