ParseParameters.h

#ifndef PARSEPARAMETERS_H
#define PARSEPARAMETERS_H

#include <map>
#include <fstream>
#include <string>

/// Parse and accumulate initial values for parameters.
/// New values for the parameters came in the form name=value or name:value
///
///   @author Mario Valle - Swiss National Supercomputing Centre (CSCS)
///   @date 2012-02-21 (initial version)
///   @version 1.1
///
class ParseParameters {
public:
  /// Return a pointer to the singleton instance
  ///
  /// @return The pointer to the instance
  ///
  static ParseParameters *getInstance(void);

  /// Change value to a given parameter.
  /// The argument is a string: name=value or name:value where the name is in
  /// (w0, k, p0, p1, w2) and the value is a double numerical value
  ///
  /// @param[in] aParamValuePair The string to be parsed for name and value
  ///
  /// @exception FastCodeMLFatal For invalid or malformed string
  ///
  void addParameter(const char *aParamValuePair);

  /// Get the value associated to the given name
  ///
  /// @param[in] aParamName The name of the parameter to be retrieved
  ///
  /// @exception FastCodeMLFatal For not existent parameter name
  ///
  double getParameter(const char *aParamName) const;

  /// Print the parameter list as: cout << r;
  ///
  /// @param[in] aOut Output stream
  /// @param[in] aParamsList Pointer to the instance to be printed
  ///
  /// @return The output stream
  ///
  friend std::ostream &operator<<(std::ostream &aOut,
                                  const ParseParameters *aParamsList);

protected:
  /// Protected constructor
  ///
  ParseParameters();

private:
  static ParseParameters *mInstance; ///< Pointer to the singleton instance
  std::map<std::string, double>
      mDictionary; ///< Dictionary holding the pairs (parameter name, value)
};

#endif