BlackMATov/meta.hpp
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add value deref function

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BlackMATov
2022-01-15 07:48:22 +07:00
parent ef5b04add0
commit fb604ba61e
4 changed files with 126 additions and 11 deletions
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74
untests/meta_utilities/value_tests.cpp
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@@ -30,6 +30,12 @@ namespace
++copy_ctor_counter;
}
ivec2& add(const ivec2& other) {
x += other.x;
y += other.y;
return *this;
}
ivec2& operator=(ivec2&& other) = delete;
ivec2& operator=(const ivec2& other) = delete;
public:
@@ -344,21 +350,85 @@ TEST_CASE("meta/meta_utilities/value") {
CHECK_THROWS(std::ignore = operator==(meta::value{empty_class1{}}, meta::value{empty_class1{}}));
}
}
SUBCASE("deref") {
{
int i{42};
const meta::value v{meta::value{&i}.deref()};
CHECK(v.get_type() == meta::resolve_type<int>());
CHECK(v.data() != &i);
}
{
const char i{42};
const meta::value v{meta::value{&i}.deref()};
CHECK(v.get_type() == meta::resolve_type<char>());
CHECK(v.data() != &i);
}
{
const int i{42};
const int* const pi = &i;
const meta::value v{meta::value{&pi}.deref()};
CHECK(v.get_type() == meta::resolve_type<const int*>() );
CHECK(v.cast<const int*>() == pi);
}
{
int i{42};
void* p1 = &i;
const void* p2 = &i;
void* const& p3 = &i;
const void* const& p4 = &i;
CHECK_THROWS(std::ignore = meta::value(p1).deref());
CHECK_THROWS(std::ignore = meta::value(p2).deref());
CHECK_THROWS(std::ignore = meta::value(p3).deref());
CHECK_THROWS(std::ignore = meta::value(p4).deref());
}
{
ivec2 v{1,2};
meta::value vp{&v};
CHECK(ivec2::move_ctor_counter == 0);
CHECK(ivec2::copy_ctor_counter == 0);
meta::value vv1{vp.deref()};
CHECK(ivec2::move_ctor_counter == 0);
CHECK(ivec2::copy_ctor_counter == 1);
meta::value vv2{std::move(vp).deref()};
CHECK(ivec2::move_ctor_counter == 0);
CHECK(ivec2::copy_ctor_counter == 2);
meta::value vv3{vp.cderef()};
CHECK(ivec2::move_ctor_counter == 0);
CHECK(ivec2::copy_ctor_counter == 3);
}
}
}
TEST_CASE("meta/meta_utilities/value/functions") {
namespace meta = meta_hpp;
SUBCASE("add") {
{
const meta::value v{&ivec2::add};
CHECK(v.get_type() == meta::resolve_type<ivec2&(ivec2::*)(const ivec2&)>());
CHECK(std::invoke(v.cast<decltype(&ivec2::add)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
CHECK(std::invoke(*v.try_cast<decltype(&ivec2::add)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
}
}
SUBCASE("iadd2") {
{
const meta::value v{iadd2};
CHECK(v.get_type() == meta::resolve_type<ivec2(*)(ivec2, ivec2)>());
CHECK(v.cast<decltype(iadd2)>()(ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
CHECK(std::invoke(v.cast<decltype(iadd2)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
CHECK(std::invoke(*v.try_cast<decltype(iadd2)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
}
{
const meta::value v{&iadd2};
CHECK(v.get_type() == meta::resolve_type<ivec2(*)(ivec2, ivec2)>());
CHECK(v.cast<decltype(&iadd2)>()(ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
CHECK(std::invoke(v.cast<decltype(&iadd2)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
CHECK(std::invoke(*v.try_cast<decltype(&iadd2)>(), ivec2{1,2}, ivec2{3,4}) == ivec2{4,6});
}
}
}