Moved all code to src/ and include/ directories.

src/scanner.h

@@ -0,0 +1,85 @@
+#pragma once
+
+#include <ios>
+#include <string>
+#include <queue>
+#include <stack>
+#include <set>
+#include "stream.h"
+
+namespace YAML
+{
+	struct Token;
+
+	class Scanner
+	{
+	public:
+		Scanner(std::istream& in);
+		~Scanner();
+
+		Token *GetNextToken();
+		void EatNextToken();
+		void PopNextToken();
+		Token *PeekNextToken();
+
+	private:
+		// scanning
+		void StartStream();
+		void EndStream();
+		void ScanNextToken();
+		void ScanToNextToken();
+		Token *PushIndentTo(int column, bool sequence);
+		void PopIndentTo(int column);
+
+		// checking input
+		void InsertSimpleKey();
+		bool VerifySimpleKey();
+		void VerifyAllSimpleKeys();
+
+		bool IsWhitespaceToBeEaten(char ch);
+
+		struct SimpleKey {
+			SimpleKey(int pos_, int line_, int column_, int flowLevel_);
+
+			void Validate();
+			void Invalidate();
+
+			int pos, line, column, flowLevel;
+			Token *pMapStart, *pKey;
+		};
+
+		// and the tokens
+		void ScanDirective();
+		void ScanDocStart();
+		void ScanDocEnd();
+		void ScanBlockSeqStart();
+		void ScanBlockMapSTart();
+		void ScanBlockEnd();
+		void ScanBlockEntry();
+		void ScanFlowStart();
+		void ScanFlowEnd();
+		void ScanFlowEntry();
+		void ScanKey();
+		void ScanValue();
+		void ScanAnchorOrAlias();
+		void ScanTag();
+		void ScanPlainScalar();
+		void ScanQuotedScalar();
+		void ScanBlockScalar();
+
+	private:
+		// the stream
+		Stream INPUT;
+
+		// the output (tokens)
+		std::queue <Token *> m_tokens;
+
+		// state info
+		bool m_startedStream, m_endedStream;
+		bool m_simpleKeyAllowed;
+		int m_flowLevel;                // number of unclosed '[' and '{' indicators
+		bool m_isLastKeyValid;
+		std::stack <SimpleKey> m_simpleKeys;
+		std::stack <int> m_indents;
+	};
+}