add unique_ref::to_unique_ptr()

Author: igagis

src/utki/unique_ref.hpp

@@ -102,6 +102,17 @@ class unique_ref
 		utki::assert(this->p, SL);
 	}
 
+	/**
+	 * @brief Move this unique_ref to unique_ptr.
+	 * This method leaves the unique_ref in "nullptr" state, so it can only be called
+	 * on r-value.
+	 * @return non-null std::unique_ptr.
+	 */
+	std::unique_ptr<object_type> to_unique_ptr() &&
+	{
+		return std::move(this->p);
+	}
+
 	/**
 	 * @brief Get reference to the object.
 	 *

tests/unit/src/unique_ref.cpp

@@ -200,5 +200,17 @@ const tst::set set("unique_ref", [](tst::suite& suite) {
 		tst::check(utki::contains(set, v2r), SL);
 		tst::check(!utki::contains(set, v3r), SL);
 	});
+
+	suite.add("to_unique_ptr", [](){
+		constexpr auto str = "Hello world!";
+		utki::unique_ref<std::string> us = utki::make_unique<std::string>(str);
+
+		tst::check_eq(us.get(), std::string(str), SL);
+
+		auto usptr = std::move(us).to_unique_ptr();
+
+		tst::check(usptr, SL);
+		tst::check_eq(*usptr, std::string(str), SL);
+	});
 });
 } // namespace