1 files changed, 67 insertions, 0 deletions
diff --git a/yaml-cpp/src/regex.h b/yaml-cpp/src/regex.h
new file mode 100755
index 00000000..8722e626
--- /dev/null
+++ b/yaml-cpp/src/regex.h
@@ -0,0 +1,67 @@
+#ifndef REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define REGEX_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
+
+
+#include <vector>
+#include <string>
+
+namespace YAML
+{
+	class Stream;
+
+	enum REGEX_OP { REGEX_EMPTY, REGEX_MATCH, REGEX_RANGE, REGEX_OR, REGEX_AND, REGEX_NOT, REGEX_SEQ };
+
+	// simplified regular expressions
+	// . Only straightforward matches (no repeated characters)
+	// . Only matches from start of string
+	class RegEx
+	{
+	public:
+		RegEx();
+		RegEx(char ch);
+		RegEx(char a, char z);
+		RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
+		~RegEx() {}
+
+		friend RegEx operator ! (const RegEx& ex);
+		friend RegEx operator || (const RegEx& ex1, const RegEx& ex2);
+		friend RegEx operator && (const RegEx& ex1, const RegEx& ex2);
+		friend RegEx operator + (const RegEx& ex1, const RegEx& ex2);
+		
+		bool Matches(char ch) const;
+		bool Matches(const std::string& str) const;
+		bool Matches(const Stream& in) const;
+		template <typename Source> bool Matches(const Source& source) const;
+
+		int Match(const std::string& str) const;
+		int Match(const Stream& in) const;
+		template <typename Source> int Match(const Source& source) const;
+
+	private:
+		RegEx(REGEX_OP op);
+		
+		template <typename Source> bool IsValidSource(const Source& source) const;
+		template <typename Source> int MatchUnchecked(const Source& source) const;
+
+		template <typename Source> int MatchOpEmpty(const Source& source) const;
+		template <typename Source> int MatchOpMatch(const Source& source) const;
+		template <typename Source> int MatchOpRange(const Source& source) const;
+		template <typename Source> int MatchOpOr(const Source& source) const;
+		template <typename Source> int MatchOpAnd(const Source& source) const;
+		template <typename Source> int MatchOpNot(const Source& source) const;
+		template <typename Source> int MatchOpSeq(const Source& source) const;
+
+	private:
+		REGEX_OP m_op;
+		char m_a, m_z;
+		std::vector <RegEx> m_params;
+	};
+}
+
+#include "regeximpl.h"
+
+#endif // REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66