1 files changed, 67 insertions, 0 deletions
diff --git a/boost_any_to_qvariant.hpp b/boost_any_to_qvariant.hpp
new file mode 100644
index 0000000..6172c09
--- /dev/null
+++ b/boost_any_to_qvariant.hpp
@@ -0,0 +1,67 @@
+#pragma once
+
+#include "friendly_fusion.hpp"
+#include "index_list.hpp"
+
+#include <QVariant>
+
+#include <boost/any.hpp>
+
+#include <string>
+
+template<typename value_type>
+QVariant convert(boost::any const& x)
+{
+	return QVariant::fromValue<value_type>(boost::any_cast<value_type>(x));
+}
+
+template <typename T, int n>
+QVariant convert(boost::any const& x)
+{
+	typedef friendly_fusion::result_of::begin<T> begin;
+	typedef friendly_fusion::result_of::advance_c<typename begin::type, n> adv_it;
+	typedef friendly_fusion::result_of::deref<typename adv_it::type> deref;
+	typedef typename std::decay<typename deref::type>::type value_type;
+	return convert<value_type>(x);
+}
+
+#if defined( __GNUC__ ) && !defined( __clang__ )
+template <typename T, int index>
+std::function<QVariant(boost::any const&)> convert_lambda()
+{
+	return [](boost::any const& any)
+	{
+		return convert<T, index>(any);
+	};
+}
+
+#endif //defined( __GNUC__ ) && !defined( __clang__ )
+
+template<typename T, int... Indices>
+QVariant to_qvariant(boost::any const& any, int index, indices<Indices...>)
+{
+	typedef std::function<QVariant(boost::any const&)> element_type;
+	static element_type table[] =
+	{
+#if defined( __GNUC__ ) && !defined( __clang__ )
+		//Workaround for gcc bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47226
+		convert_lambda<T, Indices>()
+		...
+#else
+		[](boost::any const& any){return convert<T, Indices>(any);}
+		...
+#endif //defined( __GNUC__ ) && !defined( __clang__ )
+	};
+
+	return table[index](any);
+}
+
+
+template <typename T>
+QVariant to_qvariant(boost::any const& x, int index)
+{
+	typedef typename friendly_fusion::result_of::size<T>::type seq_size;
+	typedef typename build_indices<seq_size::value>::type indices_type;
+
+	return to_qvariant<T>(x, index, indices_type{});
+}
+\ No newline at end of file