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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Fit/Option/MinimizerOptions.cpp
//! @brief Implements class MinimizerOptions.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "Fit/Option/MinimizerOptions.h"
#include "Fit/Tool/StringUtil.h"
#include <iostream>
#include <sstream>
#include <stdexcept>
namespace {
const std::string delimeter = ";";
} // namespace
std::string MinimizerOptions::toOptionString() const
{
std::ostringstream result;
for (const auto& option : m_options)
result << option->name() << "=" << option->value_str() << delimeter;
return result.str();
}
void MinimizerOptions::setOptionString(const std::string& options)
{
// splits multiple option string "Strategy=1;Tolerance=0.01;"
std::vector<std::string> tokens = mumufit::stringUtil::split(options, delimeter);
try {
for (const std::string& opt : tokens)
if (!opt.empty())
processCommand(opt);
} catch (std::exception& ex) {
std::ostringstream ostr;
ostr << "MinimizerOptions::setOptions -> Error. Cannot parse option string '" << options
<< "'.\n, error message '" << ex.what() << "'";
throw std::runtime_error(ostr.str());
}
}
//! Process single option string 'Tolerance=0.01' and sets the value
//! to corresponding MultiOption
void MinimizerOptions::processCommand(const std::string& command)
{
std::vector<std::string> tokens = mumufit::stringUtil::split(command, "=");
if (tokens.size() != 2)
throw std::runtime_error("MinimizerOptions::processOption -> Cannot parse option '"
+ command + "'");
std::string name = tokens[0];
std::string value = tokens[1];
OptionContainer::option_t opt = option(name);
opt->setFromString(value);
}
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