#ifndef _utl_AugerUnitParser_h
#define _utl_AugerUnitParser_h

/*!
  \file AugerUnitParser.h

  \brief Auger Unit evaluating Singleton

  \author Roland Sipos
*/

#include <utl/Singleton.h>
#include <utl/UnitEvaluator.h>

#include <string>
#include <map>


namespace utl {

  class AugerUnitParser : public utl::Singleton<AugerUnitParser> {

  public:
    typedef UnitEvaluator::SymbolTable SymbolTable;

    double Parse(const std::string& parsExp) const
    { return fEvaluator.Evaluate(parsExp); }

    UnitGrammar::EErrors Status() const
    { return fEvaluator.GetStatus(); }

    std::string GetFormattedError() const
    { return fEvaluator.GetError(); }

    const SymbolTable& GetUnitTable() const
    { return fEvaluator.GetSymbolTable(); }

  private:
    AugerUnitParser();
    ~AugerUnitParser() { }
    SymbolTable MakeSymbolTable();

    const SymbolTable fSymbolTable;
    const UnitEvaluator fEvaluator;

    friend class utl::Singleton<AugerUnitParser>;

  };

}


#endif