Tutorial: How to encode custom types to YAML::Node's?

[mcandre]

The tutorial shows how to decode custom types from YAML files. But I am not sure how to accomplish the reverse: How can we encode custom types back into YAML::Node's?

[SupSuper]

Here's an example from one of my projects:

// x,y,z position class encoded as [x, y, z] in YAML
namespace YAML
{
	template<>
	struct convert<Vector3>
	{
		static Node encode(const Vector3& rhs)
		{
			Node node;
			node.push_back(rhs.x);
			node.push_back(rhs.y);
			node.push_back(rhs.z);
			return node;
		}

		static bool decode(const Node& node, Vector3& rhs)
		{
			if (!node.IsSequence() || node.size() != 3)
				return false;

			rhs.x = node[0].as<int>();
			rhs.y = node[1].as<int>();
			rhs.z = node[2].as<int>();
			return true;
		}
	};
}

Usage:

node["foo"] = Vector3(1, 2, 3);
Vector3 bar = node["bar"].as<Vector3>();