From 7da829d48f9059c83ab9cada2c850621e8bbd3f3 Mon Sep 17 00:00:00 2001
From: Dominick Allen <djallen@librehumanitas.org>
Date: Sun, 22 Sep 2024 12:41:28 -0500
Subject: Basics of library.

---
 include/fud_unique_array.hpp | 68 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 include/fud_unique_array.hpp

(limited to 'include/fud_unique_array.hpp')

diff --git a/include/fud_unique_array.hpp b/include/fud_unique_array.hpp
new file mode 100644
index 0000000..428374a
--- /dev/null
+++ b/include/fud_unique_array.hpp
@@ -0,0 +1,68 @@
+/*
+ * libfud
+ * Copyright 2024 Dominick Allen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FUD_UNIQUE_ARRAY_HPP
+#define FUD_UNIQUE_ARRAY_HPP
+
+#include "fud_array.hpp"
+#include "fud_fud_type_traits.hpp"
+
+#include <cstdlib>
+#include <utility>
+
+namespace fud {
+
+template <class T, T... Vs>
+class UniqueArray { // NOLINT(cppcoreguidelines-special-member-functions)
+  public:
+    // NOLINTBEGIN(cppcoreguidelines-avoid-const-or-ref-data-members)
+    const Array<T, sizeof...(Vs)> m_values{};
+    // NOLINTEND(cppcoreguidelines-avoid-const-or-ref-data-members)
+
+    ~UniqueArray() = default;
+
+    constexpr UniqueArray() : m_values{{Vs...}}
+    {
+        static_assert(sizeof...(Vs) < 2 || !hasDuplicates<T, Vs...>());
+    }
+
+    constexpr UniqueArray(const UniqueArray& rhs) : m_values(rhs.m_values)
+    {
+        static_assert(sizeof...(Vs) < 2 || !hasDuplicates<T, Vs...>());
+    }
+
+    constexpr UniqueArray(UniqueArray&& rhs) noexcept : m_values(std::move(rhs).m_values)
+    {
+        static_assert(sizeof...(Vs) < 2 || !hasDuplicates<T, Vs...>());
+    }
+
+    [[nodiscard]] constexpr size_t size() const
+    {
+        return sizeof...(Vs);
+    }
+};
+
+template <typename T=size_t, T... Is>
+constexpr UniqueArray<T, Is...> makeStaticIndexSet(std::integer_sequence<T, Is...> /*unused*/)
+{
+    static_assert(sizeof...(Is) > 0);
+    return UniqueArray<T, Is...>{};
+}
+
+} // namespace fud
+
+#endif
-- 
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