ParamValue.h

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// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2022.
//
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//  * Redistributions in binary form must reproduce the above copyright
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//    may be used to endorse or promote products derived from this software
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// $Authors: Ruben Grünberg $
// --------------------------------------------------------------------------

#pragma once

#include <OpenMS/OpenMSConfig.h>

#include <cstddef> // for ptrdiff_t
#include <string>
#include <vector>


namespace OpenMS
{
  class OPENMS_DLLAPI ParamValue
  {

public:

    static const ParamValue EMPTY;

    enum ValueType : unsigned char
    {
      STRING_VALUE, 
      INT_VALUE, 
      DOUBLE_VALUE, 
      STRING_LIST, 
      INT_LIST, 
      DOUBLE_LIST, 
      EMPTY_VALUE 
    };


    ParamValue();
    ParamValue(const ParamValue&);
    ParamValue(ParamValue&&) noexcept;
    ParamValue(const char*);
    ParamValue(const std::string&);
    ParamValue(const std::vector<std::string>&);
    ParamValue(const std::vector<int>&);
    ParamValue(const std::vector<double>&);
    ParamValue(long double);
    ParamValue(double);
    ParamValue(float);
    ParamValue(short int);
    ParamValue(unsigned short int);
    ParamValue(int);
    ParamValue(unsigned);
    ParamValue(long int);
    ParamValue(unsigned long);
    ParamValue(long long);
    ParamValue(unsigned long long);
    ~ParamValue();



    operator std::string() const;

    operator std::vector<std::string>() const;

    operator std::vector<int>() const;

    operator std::vector<double>() const;

    operator long double() const;

    operator double() const;

    operator float() const;

    operator short int() const;

    operator unsigned short int() const;

    operator int() const;

    operator unsigned int() const;

    operator long int() const;

    operator unsigned long int() const;

    operator long long() const;

    operator unsigned long long() const;

    bool toBool() const;

    const char* toChar() const;

    std::string toString(bool full_precision = true) const;

    std::vector<std::string> toStringVector() const;

    std::vector<int> toIntVector() const;

    std::vector<double> toDoubleVector() const;


    ParamValue& operator=(const ParamValue&);
    ParamValue& operator=(ParamValue&&) noexcept;
    ParamValue& operator=(const char*);
    ParamValue& operator=(const std::string&);
    ParamValue& operator=(const std::vector<std::string>&);
    ParamValue& operator=(const std::vector<int>&);
    ParamValue& operator=(const std::vector<double>&);
    ParamValue& operator=(const long double);
    ParamValue& operator=(const double);
    ParamValue& operator=(const float);
    ParamValue& operator=(const short int);
    ParamValue& operator=(const unsigned short int);
    ParamValue& operator=(const int);
    ParamValue& operator=(const unsigned);
    ParamValue& operator=(const long int);
    ParamValue& operator=(const unsigned long);
    ParamValue& operator=(const long long);
    ParamValue& operator=(const unsigned long long);

    inline ValueType valueType() const
    {
      return value_type_;
    }

    inline bool isEmpty() const
    {
      return value_type_ == EMPTY_VALUE;
    }

    friend OPENMS_DLLAPI std::ostream& operator<<(std::ostream&, const ParamValue&);

    friend OPENMS_DLLAPI bool operator==(const ParamValue&, const ParamValue&);

    friend OPENMS_DLLAPI bool operator<(const ParamValue&, const ParamValue&);

    friend OPENMS_DLLAPI bool operator>(const ParamValue&, const ParamValue&);

    friend OPENMS_DLLAPI bool operator!=(const ParamValue&, const ParamValue&);

protected:

    ValueType value_type_;

    union
    {
      ptrdiff_t ssize_;
      double dou_;
      std::string* str_;
      std::vector<std::string>* str_list_;
      std::vector<int>* int_list_;
      std::vector<double>* dou_list_;
    } data_;

private:

    void clear_() noexcept;

    static std::string doubleToString(double value, bool full_precision = true);

  };
}