Finished parsing of basic data types (scalar, sequence, map).

content.h

@@ -1,13 +1,20 @@
 #pragma once
 
+#include <ios>
+
 namespace YAML
 {
+	class Scanner;
+
 	class Content
 	{
 	public:
 		Content();
 		virtual ~Content();
 
+		virtual void Parse(Scanner *pScanner) = 0;
+		virtual void Write(std::ostream& out, int indent) = 0;
+
 	protected:
 	};
 }