variable.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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.
 *
 * xoreos 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 GNU General Public License
 * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef AURORA_ACTIONSCRIPT_VARIABLE_H
#define AURORA_ACTIONSCRIPT_VARIABLE_H

#include <boost/shared_ptr.hpp>

#include "src/common/ustring.h"

#include "src/aurora/actionscript/types.h"

namespace Aurora {

namespace ActionScript {

class Object;
class Function;

typedef boost::shared_ptr<Object> ObjectPtr;

class Variable {
public:
    static Variable Null();

    Variable();

    Variable(const Common::UString &value);
    Variable(const char *value);
    Variable(Object *value);
    Variable(double value);
    Variable(unsigned int value);
    Variable(unsigned long value);
    Variable(bool value);
    Variable(ObjectPtr value);

    Variable(const Variable &variable);

    ~Variable();

    bool isUndefined() const;
    bool isObject() const;
    bool isString() const;
    bool isNumber() const;
    bool isFunction() const;

    double asNumber() const;
    ObjectPtr asObject();
    const Common::UString &asString() const;
    bool asBoolean() const;

    template<typename T> boost::shared_ptr<T> as() const;

    void operator=(Variable v);

    bool operator!();
    Variable operator&&(Variable v);
    Variable operator||(Variable v);

    Variable operator==(Variable v);
    Variable operator<(Variable v);

    Variable operator-(Variable v);
    Variable operator+(Variable v);
    Variable operator*(Variable v);
    Variable operator/(Variable v);

    Variable operator++();

private:
    Type _type;

    struct {
        ObjectPtr object;

        double number;
        bool boolean;

        Common::UString string;
    } _value;
};

template<typename T> boost::shared_ptr<T> Variable::as() const {
    return boost::dynamic_pointer_cast<T>(_value.object);
}

} // End of namespace ActionScript

} // End of namespace Aurora

#endif // AURORA_ACTIONSCRIPT_VARIABLE_H