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Diffstat (limited to 'fuzzylite/fl/factory/ConstructionFactory.h')
| -rw-r--r-- | fuzzylite/fl/factory/ConstructionFactory.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/fuzzylite/fl/factory/ConstructionFactory.h b/fuzzylite/fl/factory/ConstructionFactory.h new file mode 100644 index 0000000..2558d7f --- /dev/null +++ b/fuzzylite/fl/factory/ConstructionFactory.h @@ -0,0 +1,202 @@ +/* + fuzzylite (R), a fuzzy logic control library in C++. + Copyright (C) 2010-2017 FuzzyLite Limited. All rights reserved. + Author: Juan Rada-Vilela, Ph.D. <jcrada@fuzzylite.com> + + This file is part of fuzzylite. + + fuzzylite is free software: you can redistribute it and/or modify it under + the terms of the FuzzyLite License included with the software. + + You should have received a copy of the FuzzyLite License along with + fuzzylite. If not, see <http://www.fuzzylite.com/license/>. + + fuzzylite is a registered trademark of FuzzyLite Limited. + */ + +#ifndef FL_CONSTRUCTIONFACTORY_H +#define FL_CONSTRUCTIONFACTORY_H + +#include "fl/fuzzylite.h" + +#include <map> +#include <string> +#include <vector> + +namespace fl { + + /** + The ConstructionFactory class is the base class for a factory whose + objects are created from a registered ConstructionFactory::Constructor. + + @author Juan Rada-Vilela, Ph.D. + @see FactoryManager + @since 5.0 + */ + + template <typename T> + class ConstructionFactory { + public: + /** + The Constructor type definition refers to a zero-parameter method + which returns an instance of T + */ + typedef T(*Constructor)(); + + private: + std::string _name; + std::map<std::string, Constructor> _constructors; + + public: + explicit ConstructionFactory(const std::string& name); + virtual ~ConstructionFactory(); + FL_DEFAULT_COPY_AND_MOVE(ConstructionFactory) + + /** + Returns the name of the factory + @return the name of the factory + */ + virtual std::string name() const; + + /** + Registers the constructor in the factory + @param key is the unique name by which constructors are registered + @param constructor is the pointer to the constructor of the object + */ + virtual void registerConstructor(const std::string& key, Constructor constructor); + /** + Deregisters from the factory the constructor associated to the given key + @param key is the unique name by which constructors are registered + */ + virtual void deregisterConstructor(const std::string& key); + /** + Checks whether the factory has a constructor registered by the given key + @param key is the unique name by which constructors are registered + @return whether the factory has the given constructor registered + */ + virtual bool hasConstructor(const std::string& key) const; + /** + Gets the constructor registered by the given key + @param key is the unique name by which constructors are registered + @return the pointer to the given constructor + */ + virtual Constructor getConstructor(const std::string& key) const; + /** + Creates an object by executing the constructor associated to the given key + @param key is the unique name by which constructors are registered + @return an object by executing the constructor associated to the given key + */ + virtual T constructObject(const std::string& key) const; + /** + Returns a vector of keys for the constructors available + @return a vector of keys for the constructors available + */ + virtual std::vector<std::string> available() const; + /** + Gets the map of registered keys and constructors + @return the map of registered keys and constructors + */ + virtual std::map<std::string, Constructor>& constructors(); + /** + Gets an immutable map of registered keys and constructors + @return an immutable map of registered keys and constructors + */ + virtual const std::map<std::string, Constructor>& constructors() const; + }; + +} + +/** + * Template implementation + */ + + +#include "fl/Exception.h" +#include "fl/defuzzifier/Defuzzifier.h" +#include "fl/hedge/Hedge.h" +#include "fl/norm/SNorm.h" +#include "fl/norm/TNorm.h" +#include "fl/term/Term.h" + +namespace fl { + + template <typename T> + inline ConstructionFactory<T>::ConstructionFactory(const std::string& name) : _name(name) { + + } + + template <typename T> + inline ConstructionFactory<T>::~ConstructionFactory() { + } + + template<typename T> + inline std::string ConstructionFactory<T>::name() const { + return this->_name; + } + + template <typename T> + inline void ConstructionFactory<T>::registerConstructor(const std::string& key, Constructor constructor) { + this->_constructors[key] = constructor; + } + + template <typename T> + inline void ConstructionFactory<T>::deregisterConstructor(const std::string& key) { + typename std::map<std::string, Constructor>::iterator it = this->_constructors.find(key); + if (it != this->_constructors.end()) { + this->_constructors.erase(it); + } + } + + template <typename T> + inline bool ConstructionFactory<T>::hasConstructor(const std::string& key) const { + typename std::map<std::string, Constructor>::const_iterator it = this->_constructors.find(key); + return (it != this->_constructors.end()); + } + + template <typename T> + inline typename ConstructionFactory<T>::Constructor ConstructionFactory<T>::getConstructor(const std::string& key) const { + typename std::map<std::string, Constructor>::const_iterator it = this->_constructors.find(key); + if (it != this->_constructors.end()) { + return it->second; + } + return fl::null; + } + + template <typename T> + inline T ConstructionFactory<T>::constructObject(const std::string& key) const { + typename std::map<std::string, Constructor>::const_iterator it = this->_constructors.find(key); + if (it != this->_constructors.end()) { + if (it->second) { + return it->second(); + } + return fl::null; + } + std::ostringstream ss; + ss << "[factory error] constructor of " + _name + " <" << key << "> not registered"; + throw Exception(ss.str(), FL_AT); + } + + template <typename T> + inline std::vector<std::string> ConstructionFactory<T>::available() const { + std::vector<std::string> result; + typename std::map<std::string, Constructor>::const_iterator it = this->_constructors.begin(); + while (it != this->_constructors.end()) { + result.push_back(it->first); + ++it; + } + return result; + } + + template<typename T> + inline std::map<std::string, typename ConstructionFactory<T>::Constructor>& ConstructionFactory<T>::constructors() { + return this->_constructors; + } + + template<typename T> + inline const std::map<std::string, typename ConstructionFactory<T>::Constructor>& ConstructionFactory<T>::constructors() const { + return this->_constructors; + } +} + +#endif /* FL_CONSTRUCTIONFACTORY_H */ + |