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AK: Add Flatten Variant helper

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This will be used in future commits.
It has to be present for types, that are generated by the IDL since the
IDL flattens variants of variants.
This commit is contained in:
Totto16 2024-11-14 14:14:36 +01:00 • committed by Tim Ledbetter
commit 14e808e574
Notes: github-actions[bot] 2024-12-06 13:11:28 +00:00
2 changed files with 31 additions and 0 deletions
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16
Tests/AK/TestVariant.cpp
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@ -302,3 +302,19 @@ TEST_CASE(variant_equality)
EXPECT_EQ(variant1, variant2);
}
}
TEST_CASE(flatten_variant)
{
using InnerVariant = Variant<Empty, int>;
using OuterVariant = FlattenVariant<InnerVariant, Variant<float>>;
using MyVariant = Variant<Empty, int, float>;
EXPECT_EQ((TypeList<MyVariant>::size), 3u);
EXPECT_EQ((TypeList<OuterVariant>::size), 3u);
EXPECT((IsSame<OuterVariant, MyVariant>));
using OuterList = TypeList<OuterVariant>;
EXPECT((IsSame<typename OuterList::template Type<0>, Empty>));
EXPECT((IsSame<typename OuterList::template Type<1>, int>));
EXPECT((IsSame<typename OuterList::template Type<2>, float>));
}