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remove uvalue::can_get_as

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BlackMATov
2022-11-06 18:25:06 +07:00
parent a630d89e96
commit 291e165ca4
5 changed files with 23 additions and 134 deletions
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13
manuals/meta_examples/uvalue_example.cpp
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@@ -75,9 +75,22 @@ TEST_CASE("meta/meta_examples/uvalue/usage") {
// also, it supports upcasting for registered types
CHECK(val.get_as<shape>().get_area() == 200);
// an exception will be thrown if we try to get a wrong type
CHECK_THROWS(std::ignore = val.get_as<int>());
// but we can use try_get_as for safe access
CHECK(val.try_get_as<shape>());
if ( shape* s = val.try_get_as<shape>() ) {
}
// upcasting is supported for pointers too
rectangle rect{3, 5};
val = &rect;
CHECK(val.get_as<shape*>()->get_area() == 15);
CHECK(val.get_type() == meta::resolve_type<rectangle*>());
// but we can use try_get_as for pointers too
CHECK(val.try_get_as<shape*>());
if ( shape* s = val.try_get_as<shape*>() ) {
}
}