ATC_Error.h
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ATC_Error.h
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			// ATC_Error : a base class for atom-continuum errors

			#ifndef ATC_ERROR
			#define ATC_ERROR

			#include <string>

			// the following two convert __LINE__ to a string
			#define STRING2(x) #x
			#define STRING(x) STRING2(x)
			// prints file and line number for error messages
			#define ERROR(x) __FILE__ ":" STRING(__LINE__) " " x
			//#define FILELINE __FILE__+to_string(__LINE__)
			#define FILELINE __FILE__

			#define ERROR_FOR_BACKTRACE
			#define HACK(l,m)


			namespace ATC {
			/**
			* @class ATC_Error
			* @brief Base class for throwing run-time errors with descriptions
			*/

			class ATC_Error {

			public:
			// constructor
			ATC_Error(std::string errorDescription)
			{
			errorDescription_ = "ERROR: " + errorDescription;
			ERROR_FOR_BACKTRACE
			};

			ATC_Error(std::string location, std::string errorDescription)
			{
			errorDescription_ = "ERROR: " + location + ": "+ errorDescription;
			ERROR_FOR_BACKTRACE
			};

			std::string error_description() {
			return errorDescription_;
			};

			private:
			// string describing the type of error
			std::string errorDescription_;
			};

			}
			#endif