1 files changed, 62 insertions, 0 deletions
diff --git a/yaml-cpp/include/yaml-cpp/nodeutil.h b/yaml-cpp/include/yaml-cpp/nodeutil.h
new file mode 100755
index 00000000..d0c01d27
--- /dev/null
+++ b/yaml-cpp/include/yaml-cpp/nodeutil.h
@@ -0,0 +1,62 @@
+#ifndef NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+
+namespace YAML
+{
+	template <typename T, typename U>
+	struct is_same_type {
+		enum { value = false };
+	};
+	
+	template <typename T>
+	struct is_same_type<T, T> {
+		enum { value = true };
+	};
+	
+	template <typename T, bool check>
+	struct is_index_type_with_check {
+		enum { value = false };
+	};
+	
+	template <> struct is_index_type_with_check<std::size_t, false> { enum { value = true }; };
+
+#define MAKE_INDEX_TYPE(Type) \
+	template <> struct is_index_type_with_check<Type, is_same_type<Type, std::size_t>::value> { enum { value = true }; }
+	
+	MAKE_INDEX_TYPE(int);
+	MAKE_INDEX_TYPE(unsigned);
+	MAKE_INDEX_TYPE(short);
+	MAKE_INDEX_TYPE(unsigned short);
+	MAKE_INDEX_TYPE(long);
+	MAKE_INDEX_TYPE(unsigned long);
+
+#undef MAKE_INDEX_TYPE
+	
+	template <typename T>
+	struct is_index_type: public is_index_type_with_check<T, false> {};
+	
+	// messing around with template stuff to get the right overload for operator [] for a sequence
+	template <typename T, bool b>
+	struct _FindFromNodeAtIndex {
+		const Node *pRet;
+		_FindFromNodeAtIndex(const Node&, const T&): pRet(0) {}
+	};
+
+	template <typename T>
+	struct _FindFromNodeAtIndex<T, true> {
+		const Node *pRet;
+		_FindFromNodeAtIndex(const Node& node, const T& key): pRet(node.FindAtIndex(static_cast<std::size_t>(key))) {}
+	};
+
+	template <typename T>
+	inline const Node *FindFromNodeAtIndex(const Node& node, const T& key) {
+		return _FindFromNodeAtIndex<T, is_index_type<T>::value>(node, key).pRet;
+	}
+}
+
+#endif // NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66