refs #139 burst::to_set

include/burst/range/adaptor/to_set.hpp

@@ -0,0 +1,42 @@
+#ifndef BURST_RANGE_ADAPTOR_TO_SET_HPP
+#define BURST_RANGE_ADAPTOR_TO_SET_HPP
+
+#include <burst/range/adaptor/adaptor.hpp>
+#include <burst/container/make_set.hpp>
+
+namespace burst
+{
+    struct make_set_t
+    {
+        template <typename... Xs>
+        constexpr auto operator () (Xs &&... xs) const
+        {
+            return make_set(std::forward<Xs>(xs)...);
+        }
+    };
+
+    /*!
+        \brief
+            Инструмент для конструирования класса std::set через конвейер
+
+        \details
+            Вызовы
+
+            \code{.cpp}
+            range | to_set
+            range | to_set(std::greater<>{})
+            \endcode
+
+            соответственно эквивалентны вызовам
+
+            \code{.cpp}
+            make_set(range)
+            make_set(range, std::greater<>{})
+            \endcode
+
+        \see make_set
+     */
+    constexpr auto to_set = make_adaptor_trigger(make_set_t{});
+} // namespace burst
+
+#endif // BURST_RANGE_ADAPTOR_TO_SET_HPP

test/burst/range/adaptor/CMakeLists.txt

@@ -12,6 +12,7 @@ target_sources(burst-unit-tests PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/to_deque.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/to_forward_list.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/to_list.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/to_set.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/to_vector.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/united.cpp
 )

test/burst/range/adaptor/to_set.cpp

@@ -0,0 +1,42 @@
+#include <burst/range/adaptor/to_set.hpp>
+
+#include <doctest/doctest.h>
+
+#include <boost/range/irange.hpp>
+
+#include <forward_list>
+#include <functional>
+#include <initializer_list>
+#include <set>
+
+TEST_SUITE("to_set")
+{
+    TEST_CASE("Может работать с rvalue-диапазоном")
+    {
+        const auto s = boost::irange<int>(0, 10) | burst::to_set;
+        CHECK(s == std::set<int>{0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
+    }
+
+    TEST_CASE("Может работать с lvalue-диапазоном")
+    {
+        const auto fl = std::forward_list<char>{'a', 'b', 'c'};
+
+        const auto s = fl | burst::to_set;
+        CHECK(s == std::set<char>{'a', 'b', 'c'});
+    }
+
+    TEST_CASE("Может работать со списком инициализации")
+    {
+        const auto il = std::initializer_list<char>{'a', 'b', 'c'};
+        const auto s = il | burst::to_set;
+        CHECK(s == std::set<char>{'a', 'b', 'c'});
+    }
+
+    TEST_CASE("Предусматривает задание отношения порядка")
+    {
+        const auto fl = std::forward_list<char>{1, 2, 3};
+
+        const auto s = fl | burst::to_set(std::greater<>{});
+        CHECK(s == std::set<char, std::greater<>>{3, 2, 1});
+    }
+}