PermMap.h

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/*
 * LSST Data Management System
 * Copyright 2017 AURA/LSST.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <https://www.lsstcorp.org/LegalNotices/>.
 */
#ifndef ASTSHIM_PERMMAP_H
#define ASTSHIM_PERMMAP_H
 
#include <memory>
#include <algorithm>  // for std::max
#include <sstream>
#include <stdexcept>
 
#include "astshim/base.h"
#include "astshim/Mapping.h"
 
namespace ast {

class PermMap : public Mapping {
    friend class Object;
 
public:
    explicit PermMap(std::vector<int> const &inperm, std::vector<int> const &outperm,
                     std::vector<double> const &constant = {}, std::string const &options = "")
            : Mapping(reinterpret_cast<AstMapping *>(makeRawMap(inperm, outperm, constant, options))) {}
 
    virtual ~PermMap() {}

    PermMap(PermMap const &) = default;
    PermMap(PermMap &&) = default;
    PermMap &operator=(PermMap const &) = delete;
    PermMap &operator=(PermMap &&) = default;

    std::shared_ptr<PermMap> copy() const { return std::static_pointer_cast<PermMap>(copyPolymorphic()); }
 
protected:
    virtual std::shared_ptr<Object> copyPolymorphic() const override {
        return copyImpl<PermMap, AstPermMap>();
    }

    explicit PermMap(AstPermMap *rawptr) : Mapping(reinterpret_cast<AstMapping *>(rawptr)) {
        if (!astIsAPermMap(getRawPtr())) {
            std::ostringstream os;
            os << "this is a " << getClassName() << ", which is not a PermMap";
            throw std::invalid_argument(os.str());
        }
    }
 
private:
    AstPermMap *makeRawMap(std::vector<int> const &inperm, std::vector<int> const &outperm,
                           std::vector<double> const &constant = {}, std::string const &options = "");
};
 
}  // namespace ast
 
#endif