Moved the input stream, together with line/column info, into its own class, which allowed some other stuff just to pass the stream, and not have to be a member of Scanner.

stream.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <ios>
+#include <string>
+
+namespace YAML
+{
+	struct Stream
+	{
+		Stream(std::istream& input_): input(input_), line(0), column(0) {}
+
+		char peek() { return input.peek(); }
+		int pos() const { return input.tellg(); }
+		operator std::istream& () { return input; }
+		operator bool() { return input.good(); }
+		bool operator !() { return !input; }
+
+		char GetChar();
+		std::string GetChar(int n);
+		void Eat(int n = 1);
+		void EatLineBreak();
+
+		std::istream& input;
+		int line, column;
+	};
+}