From e70f0b4de81d24d22a29a2af03c669368fce6af2 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Sat, 24 Nov 2018 20:38:48 +0100
Subject: wanda: initial commit

---
 src/variant.hpp | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 src/variant.hpp

(limited to 'src/variant.hpp')

diff --git a/src/variant.hpp b/src/variant.hpp
new file mode 100644
index 0000000..8a5fb03
--- /dev/null
+++ b/src/variant.hpp
@@ -0,0 +1,47 @@
+#ifndef WANDA_VARIANT_HPP
+#define WANDA_VARIANT_HPP
+
+#include <gio/gio.h>
+
+#include <optional>
+#include <string>
+#include <type_traits>
+
+namespace wanda {
+
+struct variant {
+
+    explicit variant(GVariant * variant);
+
+    ~variant();
+
+    template<typename Type> std::optional<Type> get() const {
+        if(!m_value) {
+            return std::nullopt;
+        }
+
+        if constexpr(std::is_same_v<Type, bool>) {
+            if(is_of_type(G_VARIANT_TYPE_BOOLEAN)) {
+                return static_cast<bool>(g_variant_get_boolean(m_value));
+            }
+        } else if constexpr(std::is_same_v<Type, std::string>) {
+            if(is_of_type(G_VARIANT_TYPE_STRING)) {
+                auto length = gsize{};
+                auto value = g_variant_get_string(m_value, &length);
+                return std::string(value, static_cast<std::size_t>(length));
+            }
+        }
+
+        return std::nullopt;
+    }
+
+
+private:
+    bool is_of_type(GVariantType const * const type) const;
+
+    GVariant * const m_value;
+};
+
+}
+
+#endif
\ No newline at end of file
-- 
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