parameter_map.h

Go to the documentation of this file.

/******************************************************************************
 Copyright (c) 2012-2016 Institut für Nachrichtentechnik, Universität Rostock
 Copyright (c) 2006-2012 Quality & Usability Lab
                         Deutsche Telekom Laboratories, TU Berlin
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
*******************************************************************************/
 
// https://AudioProcessingFramework.github.io/
 
 
#ifndef APF_PARAMETER_MAP_H
#define APF_PARAMETER_MAP_H
 
#include <map>
#include <stdexcept> // for std::out_of_range
#include <utility>  // for std::forward
 
#include "stringtools.h"
 
namespace apf
{
 
struct parameter_map : std::map<std::string, std::string>
{
  template<typename... Args>
  explicit parameter_map(Args&&... args)
    : std::map<std::string, std::string>(std::forward<Args>(args)...)
  {}
 
  const std::string& operator[](const std::string& k) const
  {
    try
    {
      return this->at(k);
    }
    catch (const std::out_of_range&)
    {
      throw std::out_of_range("Parameter \"" + k + "\" does not exist in map!");
    }
  }
 
  std::string& operator[](const std::string& k)
  {
    try
    {
      return this->at(k);
    }
    catch (const std::out_of_range&)
    {
      throw std::out_of_range("Parameter \"" + k + "\" does not exist in map!");
    }
  }
 
  template<typename T>
  T get(const std::string& k, const T& def) const
  {
    try
    {
      return this->get<T>(k);
    }
    catch (const std::out_of_range&)
    {
      return def;
    }
    catch (const std::invalid_argument&)
    {
      return def;
    }
  }
 
  template<typename char_T>
  std::basic_string<char_T>
  get(const std::string& k, const char_T* const def) const
  {
    return this->get(k, std::basic_string<char_T>(def));
  }
 
  template<typename T>
  T get(const std::string& k) const
  {
    T temp;
    try
    {
      temp = str::S2RV<T>(this->operator[](k));
    }
    catch (std::invalid_argument& e)
    {
      throw std::invalid_argument(
          "parameter_map key \"" + k + "\": " + e.what());
    }
    return temp;
  }
 
  template<typename T>
  const std::string& set(const std::string& k, const T& v)
  {
    return std::map<std::string, std::string>::operator[](k) = str::A2S(v);
  }
 
  bool has_key(const std::string& k) const
  {
    return this->count(k) > 0;
  }
};
 
}  // namespace apf
 
#endif