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test: any::as_ref for const references

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This commit is contained in:
Michele Caini
2020-12-17 11:32:01 +01:00
parent 1a3304a886
commit f55004d1e4
2 changed files with 52 additions and 3 deletions
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8
src/entt/core/any.hpp
View File

@@ -37,10 +37,12 @@ class any {
if constexpr(std::is_void_v<Type>) {
return nullptr;
} else if constexpr(std::is_lvalue_reference_v<Type>) {
using base_type = std::remove_reference_t<Type>;
switch(op) {
case operation::REF:
case operation::CREF:
as_any(to).vtable = (op == operation::REF) ? basic_vtable<Type &> : basic_vtable<const Type &>;
as_any(to).vtable = (op == operation::REF) ? basic_vtable<base_type &> : basic_vtable<const base_type &>;
[[fallthrough]];
case operation::COPY:
case operation::MOVE:
@@ -49,11 +51,11 @@ class any {
case operation::DTOR:
break;
case operation::ADDR:
return std::is_const_v<std::remove_reference_t<Type>> ? nullptr : from.instance;
return std::is_const_v<base_type> ? nullptr : from.instance;
case operation::CADDR:
return from.instance;
case operation::TYPE:
as_type_info(to) = type_id<std::remove_reference_t<Type>>();
as_type_info(to) = type_id<base_type>();
break;
}
} else if constexpr(in_situ<Type>) {

47
test/entt/core/any.cpp
View File

@@ -646,6 +646,53 @@ TEST(Any, NoSBOWithVoidSwap) {
ASSERT_EQ(entt::any_cast<fat>(lhs), (fat{{.1, .2, .3, .4}}));
}
TEST(Any, AsRef) {
entt::any any{42};
auto ref = as_ref(any);
auto cref = as_ref(std::as_const(any));
ASSERT_EQ(entt::any_cast<int>(&any), any.data());
ASSERT_EQ(entt::any_cast<int>(&ref), any.data());
ASSERT_EQ(entt::any_cast<int>(&cref), nullptr);
ASSERT_EQ(entt::any_cast<const int>(&any), any.data());
ASSERT_EQ(entt::any_cast<const int>(&ref), any.data());
ASSERT_EQ(entt::any_cast<const int>(&cref), any.data());
ASSERT_EQ(entt::any_cast<int>(any), 42);
ASSERT_EQ(entt::any_cast<int>(ref), 42);
ASSERT_EQ(entt::any_cast<const int>(cref), 42);
ASSERT_EQ(entt::any_cast<int &>(any), 42);
ASSERT_EQ(entt::any_cast<int &>(ref), 42);
ASSERT_EQ(entt::any_cast<const int &>(cref), 42);
entt::any_cast<int &>(any) = 3;
ASSERT_EQ(entt::any_cast<int>(any), 3);
ASSERT_EQ(entt::any_cast<int>(ref), 3);
ASSERT_EQ(entt::any_cast<const int>(cref), 3);
std::swap(ref, cref);
ASSERT_EQ(entt::any_cast<int>(&ref), nullptr);
ASSERT_EQ(entt::any_cast<int>(&cref), any.data());
ref = as_ref(ref);
cref = as_ref(std::as_const(cref));
ASSERT_EQ(entt::any_cast<int>(&ref), nullptr);
ASSERT_EQ(entt::any_cast<int>(&cref), nullptr);
ref = 42;
cref = 42;
ASSERT_NE(entt::any_cast<int>(&ref), nullptr);
ASSERT_NE(entt::any_cast<int>(&cref), nullptr);
ASSERT_NE(entt::any_cast<int>(&ref), any.data());
ASSERT_NE(entt::any_cast<int>(&cref), any.data());
}
TEST(Any, AnyCast) {
entt::any any{42};
const auto &cany = any;