From 5d98ec36d66db8897f7e3e5120b43c50f379baea Mon Sep 17 00:00:00 2001
From: zheng_wenlong <wenlong_zheng@nexty-ele.com>
Date: Wed, 14 Nov 2018 12:50:56 +0900
Subject: Add tbtnavi for vertical mode

Add tbtnavi for vertical mode.
This application use waltham transmitter send video to horizontal mode.

Change-Id: Icc8bb14f9c83439d90f28d0960e435a43a5e5245
Signed-off-by: zheng_wenlong <wenlong_zheng@nexty-ele.com>
---
 .../tbtnavi_demo/include/mapbox/optional.hpp       | 74 ++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 demo3/vertical/tbtnavi_demo/include/mapbox/optional.hpp

(limited to 'demo3/vertical/tbtnavi_demo/include/mapbox/optional.hpp')

diff --git a/demo3/vertical/tbtnavi_demo/include/mapbox/optional.hpp b/demo3/vertical/tbtnavi_demo/include/mapbox/optional.hpp
new file mode 100644
index 0000000..d84705c
--- /dev/null
+++ b/demo3/vertical/tbtnavi_demo/include/mapbox/optional.hpp
@@ -0,0 +1,74 @@
+#ifndef MAPBOX_UTIL_OPTIONAL_HPP
+#define MAPBOX_UTIL_OPTIONAL_HPP
+
+#pragma message("This implementation of optional is deprecated. See https://github.com/mapbox/variant/issues/64.")
+
+#include <type_traits>
+#include <utility>
+
+#include <mapbox/variant.hpp>
+
+namespace mapbox {
+namespace util {
+
+template <typename T>
+class optional
+{
+    static_assert(!std::is_reference<T>::value, "optional doesn't support references");
+
+    struct none_type
+    {
+    };
+
+    variant<none_type, T> variant_;
+
+public:
+    optional() = default;
+
+    optional(optional const& rhs)
+    {
+        if (this != &rhs)
+        { // protect against invalid self-assignment
+            variant_ = rhs.variant_;
+        }
+    }
+
+    optional(T const& v) { variant_ = v; }
+
+    explicit operator bool() const noexcept { return variant_.template is<T>(); }
+
+    T const& get() const { return variant_.template get<T>(); }
+    T& get() { return variant_.template get<T>(); }
+
+    T const& operator*() const { return this->get(); }
+    T operator*() { return this->get(); }
+
+    optional& operator=(T const& v)
+    {
+        variant_ = v;
+        return *this;
+    }
+
+    optional& operator=(optional const& rhs)
+    {
+        if (this != &rhs)
+        {
+            variant_ = rhs.variant_;
+        }
+        return *this;
+    }
+
+    template <typename... Args>
+    void emplace(Args&&... args)
+    {
+        variant_ = T{std::forward<Args>(args)...};
+    }
+
+    void reset() { variant_ = none_type{}; }
+
+}; // class optional
+
+} // namespace util
+} // namespace mapbox
+
+#endif // MAPBOX_UTIL_OPTIONAL_HPP
-- 
cgit 1.2.3-korg