Executor.h

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/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   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 2
 *   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 GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Fabian 'x3n' Landau
 *   Co-authors:
 *      ...
 *
 *   Inspiration: Executor by Benjamin Grauer
 */

#ifndef _Executor_H__
#define _Executor_H__

#include "core/CorePrereqs.h"

#include <string>
#include "util/MultiType.h"
#include "Functor.h"
#include "ExecutorPtr.h"

namespace orxonox
{
    class _CoreExport Executor
    {
        public:
            Executor(const FunctorPtr& functor, const std::string& name = "");
            Executor(const Executor& other);
            virtual ~Executor() = default;

            inline MultiType operator()() const
                { return (*this->functor_)(this->defaultValue_[0], this->defaultValue_[1], this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(const MultiType& arg1) const
                { return (*this->functor_)(arg1, this->defaultValue_[1], this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(const MultiType& arg1, const MultiType& arg2) const
                { return (*this->functor_)(arg1, arg2, this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3) const
                { return (*this->functor_)(arg1, arg2, arg3, this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4) const
                { return (*this->functor_)(arg1, arg2, arg3, arg4, this->defaultValue_[4]); }
            inline MultiType operator()(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4, const MultiType& arg5) const
                { return (*this->functor_)(arg1, arg2, arg3, arg4, arg5); }

            MultiType parse(const std::string& arguments, int* error = nullptr, const std::string& delimiter = " ", bool bPrintError = false) const;
            MultiType parse(const SubString& arguments, int* error = nullptr, const std::string& delimiter = " ", bool bPrintError = false) const;

            int evaluateArguments(const SubString& arguments, MultiType arg[MAX_FUNCTOR_ARGUMENTS], int* error = nullptr, const std::string& delimiter = " ") const;

            inline void setFunctor(const FunctorPtr& functor)
                { this->functor_ = functor; }
            inline const FunctorPtr& getFunctor() const
                { return this->functor_; }

            inline void setName(const std::string& name)
                { this->name_ = name; }
            inline const std::string& getName() const
                { return this->name_; }

            inline unsigned int getParamCount() const
                { return this->functor_->getParamCount(); }
            inline bool hasReturnvalue() const
                { return this->functor_->hasReturnvalue(); }
            inline Functor::Type getType() const
                { return this->functor_->getType(); }
            inline std::string getTypenameParam(unsigned int param) const
                { return this->functor_->getTypenameParam(param); }
            inline std::string getTypenameReturnvalue() const
                { return this->functor_->getTypenameReturnvalue(); }

            void setDefaultValues(const MultiType& arg1);
            void setDefaultValues(const MultiType& arg1, const MultiType& arg2);
            void setDefaultValues(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3);
            void setDefaultValues(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4);
            void setDefaultValues(const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4, const MultiType& arg5);
            void setDefaultValue(unsigned int index, const MultiType& arg);

            inline MultiType getDefaultValue(unsigned int index) const
            {
                if (index < MAX_FUNCTOR_ARGUMENTS)
                    return this->defaultValue_[index];

                return MultiType::Null;
            }

            bool allDefaultValuesSet() const;

            inline bool defaultValueSet(unsigned int index) const
            {
                if (index < MAX_FUNCTOR_ARGUMENTS)
                    return !this->defaultValue_[index].null();

                return false;
            }

        protected:
            FunctorPtr functor_;                                
            std::string name_;                                  
            MultiType defaultValue_[MAX_FUNCTOR_ARGUMENTS];     
    };

    class _CoreExport ExecutorStatic : public Executor
    {
        public:
            ExecutorStatic(const FunctorStaticPtr& functor, const std::string& name = "") : Executor(functor, name) {}
            virtual ~ExecutorStatic() {}
    };

    template <class T>
    class ExecutorMember : public Executor
    {
        public:
            ExecutorMember(const FunctorMemberPtr<T>& functor, const std::string& name = "") : Executor(functor, name), functorMember_(functor) {}
            virtual ~ExecutorMember() {}

            using Executor::operator();

            inline MultiType operator()(T* object) const
                { return (*this->functorMember_)(object, this->defaultValue_[0], this->defaultValue_[1], this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(T* object, const MultiType& arg1) const
                { return (*this->functorMember_)(object, arg1, this->defaultValue_[1], this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(T* object, const MultiType& arg1, const MultiType& arg2) const
                { return (*this->functorMember_)(object, arg1, arg2, this->defaultValue_[2], this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(T* object, const MultiType& arg1, const MultiType& arg2, const MultiType& arg3) const
                { return (*this->functorMember_)(object, arg1, arg2, arg3, this->defaultValue_[3], this->defaultValue_[4]); }
            inline MultiType operator()(T* object, const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4) const
                { return (*this->functorMember_)(object, arg1, arg2, arg3, arg4, this->defaultValue_[4]); }
            inline MultiType operator()(T* object, const MultiType& arg1, const MultiType& arg2, const MultiType& arg3, const MultiType& arg4, const MultiType& arg5) const
                { return (*this->functorMember_)(object, arg1, arg2, arg3, arg4, arg5); }

            inline void setObject(T* object) const
                { this->functorMember_->setObject(object); }
            inline T* getObject() const
                { return this->functorMember_->getObject(); }

            using Executor::parse;

            MultiType parse(T* object, const std::string& arguments, int* error = nullptr, const std::string& delimiter = " ", bool bPrintError = false) const
            {
                T* oldobject = this->functorMember_->getObject();

                this->functorMember_->setObject(object);
                const MultiType& result = this->Executor::parse(arguments, error, delimiter, bPrintError);
                this->functorMember_->setObject(oldobject);

                return result;
            }

        protected:
            FunctorMemberPtr<T> functorMember_;     
    };

    inline ExecutorPtr createExecutor(const FunctorPtr& functor, const std::string& name = "")
    {
        return std::make_shared<Executor>(functor, name);
    }

    template <class T>
    inline ExecutorMemberPtr<T> createExecutor(const FunctorMemberPtr<T>& functor, const std::string& name = "")
    {
        return std::make_shared<ExecutorMember<T>>(functor, name);
    }

    inline ExecutorStaticPtr createExecutor(const FunctorStaticPtr& functor, const std::string& name = "")
    {
        return std::make_shared<ExecutorStatic>(functor, name);
    }
}

#endif /* _Executor_H__ */