string_match.cpp

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 *   Copyright (C) 2004-2015 The PaGMO development team,                     *
 *   Advanced Concepts Team (ACT), European Space Agency (ESA)               *
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#include <boost/numeric/conversion/cast.hpp>
#include <cmath>
#include <string>

#include "../types.h"
#include "base.h"
#include "string_match.h"

namespace pagmo { namespace problem {

string_match::string_match(const std::string &str):base(boost::numeric_cast<int>(str.size()),boost::numeric_cast<int>(str.size()),1,0,0),m_str(str)
{
        set_bounds(0,255);
}

string_match::string_match(const char *str):base(boost::numeric_cast<int>(std::string(str).size()),boost::numeric_cast<int>(std::string(str).size()),1,0,0),m_str(str)
{
        set_bounds(0,255);
}

base_ptr string_match::clone() const
{
        return base_ptr(new string_match(*this));
}

void string_match::objfun_impl(fitness_vector &f, const decision_vector &x) const
{
        double retval = 0;
        for (std::string::size_type i = 0; i < m_str.size(); ++i) {
                retval += std::abs(static_cast<char>(x[boost::numeric_cast<size_type>(i)]) - m_str[i]);
        }
        f[0] = retval;
}



std::string string_match::pretty(const decision_vector &x) const {
        std::string retval;
        for (decision_vector::size_type i = 0; i < x.size(); ++i) {
                retval += char(x[i]);
        }
        return retval;
}

std::string string_match::human_readable_extra() const
{
        return std::string("\tString: \"") + m_str + "\"\n";
}

std::string string_match::get_name() const
{
        return "String match";
}

} }

BOOST_CLASS_EXPORT_IMPLEMENT(pagmo::problem::string_match)