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type_traits: added type_list_element[_t] and value_list_element[_v]

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This commit is contained in:
Michele Caini
2020-12-15 12:20:20 +01:00
parent a7c2a5c49b
commit 9950b2ea34
2 changed files with 84 additions and 0 deletions
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8
test/entt/core/type_traits.cpp
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@@ -54,6 +54,10 @@ TEST(TypeTraits, TypeList) {
static_assert(entt::type_list_contains_v<type, int>);
static_assert(entt::type_list_contains_v<type, char>);
static_assert(!entt::type_list_contains_v<type, double>);
static_assert(std::is_same_v<entt::type_list_element_t<0u, type>, int>);
static_assert(std::is_same_v<entt::type_list_element_t<1u, type>, char>);
static_assert(std::is_same_v<entt::type_list_element_t<0u, other>, double>);
}
TEST(TypeTraits, ValueList) {
@@ -67,6 +71,10 @@ TEST(TypeTraits, ValueList) {
static_assert(std::is_same_v<entt::value_list_cat_t<value, other, value, other>, entt::value_list<0, 2, 1, 0, 2, 1>>);
static_assert(std::is_same_v<entt::value_list_cat_t<value, other>, entt::value_list<0, 2, 1>>);
static_assert(std::is_same_v<entt::value_list_cat_t<value, value>, entt::value_list<0, 2, 0, 2>>);
static_assert(entt::value_list_element_v<0u, value> == 0);
static_assert(entt::value_list_element_v<1u, value> == 2);
static_assert(entt::value_list_element_v<0u, other> == 1);
}
TEST(TypeTraits, IsEqualityComparable) {