1 files changed, 75 insertions, 0 deletions
diff --git a/yaml-cpp/include/yaml-cpp/conversion.h b/yaml-cpp/include/yaml-cpp/conversion.h
new file mode 100755
index 00000000..1b557b56
--- /dev/null
+++ b/yaml-cpp/include/yaml-cpp/conversion.h
@@ -0,0 +1,75 @@
+#ifndef CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define CONVERSION_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 "yaml-cpp/null.h"
+#include "yaml-cpp/traits.h"
+#include <limits>
+#include <string>
+#include <sstream>
+
+namespace YAML
+{
+	// traits for conversion
+	
+	template<typename T>
+	struct is_scalar_convertible { enum { value = is_numeric<T>::value }; };
+	
+	template<> struct is_scalar_convertible<std::string> { enum { value = true }; };
+	template<> struct is_scalar_convertible<bool> { enum { value = true }; };
+	template<> struct is_scalar_convertible<_Null> { enum { value = true }; };
+
+	// actual conversion
+	
+	inline bool Convert(const std::string& input, std::string& output) {
+		output = input;
+		return true;
+	}
+	
+	YAML_CPP_API bool Convert(const std::string& input, bool& output);
+	YAML_CPP_API bool Convert(const std::string& input, _Null& output);
+	
+	inline bool IsInfinity(const std::string& input) {
+		return input == ".inf" || input == ".Inf" || input == ".INF" || input == "+.inf" || input == "+.Inf" || input == "+.INF";
+	}
+	
+	inline bool IsNegativeInfinity(const std::string& input) {
+		return input == "-.inf" || input == "-.Inf" || input == "-.INF";
+	}
+	
+	inline bool IsNaN(const std::string& input) {
+		return input == ".nan" || input == ".NaN" || input == ".NAN";
+	}
+
+
+	template <typename T> 
+	inline bool Convert(const std::string& input, T& output, typename enable_if<is_numeric<T> >::type * = 0) {
+		std::stringstream stream(input);
+		stream.unsetf(std::ios::dec);
+        if((stream >> output) && (stream >> std::ws).eof())
+            return true;
+		
+		if(std::numeric_limits<T>::has_infinity) {
+			if(IsInfinity(input)) {
+				output = std::numeric_limits<T>::infinity();
+				return true;
+			} else if(IsNegativeInfinity(input)) {
+				output = -std::numeric_limits<T>::infinity();
+				return true;
+			}
+		}
+		
+		if(std::numeric_limits<T>::has_quiet_NaN && IsNaN(input)) {
+			output = std::numeric_limits<T>::quiet_NaN();
+			return true;
+		}
+		
+		return false;
+	}
+}
+
+#endif // CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66