145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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//
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// $Id$
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/// @file factory_manager.h
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/// @brief Template/base-class for factory classes
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/// @ingroup utility
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///
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#pragma once
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#ifndef AGI_PRE
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#include <algorithm>
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#include <cctype>
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#include <map>
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#include <vector>
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#include <wx/string.h>
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#endif
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template <class func>
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class FactoryBase {
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protected:
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typedef std::map<std::string, std::pair<bool, func> > map;
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typedef typename map::iterator iterator;
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static map *classes;
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static void DoRegister(func function, std::string name, bool hide, std::vector<std::string> &subtypes) {
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if (!classes) classes = new map;
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if (subtypes.empty()) {
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classes->insert(std::make_pair(name, std::make_pair(hide, function)));
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}
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else {
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for (size_t i = 0; i < subtypes.size(); i++) {
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classes->insert(std::make_pair(name + '/' + subtypes[i], std::make_pair(hide, function)));
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}
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}
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}
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static func Find(std::string name) {
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if (!classes) return NULL;
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iterator factory = classes->find(name);
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if (factory != classes->end()) return factory->second.second;
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return NULL;
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}
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public:
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static void Clear() {
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delete classes;
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}
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static std::vector<std::string> GetClasses(std::string favourite="") {
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std::vector<std::string> list;
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if (!classes) return list;
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std::string cmp;
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std::transform(favourite.begin(), favourite.end(), favourite.begin(), ::tolower);
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for (iterator cur=classes->begin();cur!=classes->end();cur++) {
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cmp.clear();
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std::transform(cur->first.begin(), cur->first.end(), std::back_inserter(cmp), ::tolower);
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if (cmp == favourite) list.insert(list.begin(), cur->first);
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else if (!cur->second.first) list.push_back(cur->first);
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}
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return list;
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}
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virtual ~FactoryBase() {
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delete classes;
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}
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};
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template<class Base>
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class Factory0 : public FactoryBase<Base *(*)()> {
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typedef Base *(*func)();
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template<class T>
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static Base* create() {
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return new T;
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}
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public:
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static Base* Create(std::string name) {
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func factory = FactoryBase<func>::Find(name);
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if (factory) {
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return factory();
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}
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else {
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return NULL;
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}
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}
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template<class T>
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static void Register(std::string name, bool hide = false, std::vector<std::string> subTypes = std::vector<std::string>()) {
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FactoryBase<func>::DoRegister(&Factory0<Base>::template create<T>, name, hide, subTypes);
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}
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};
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template<class Base, class Arg1>
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class Factory1 : public FactoryBase<Base *(*)(Arg1)> {
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typedef Base *(*func)(Arg1);
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template<class T>
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static Base* create(Arg1 a1) {
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return new T(a1);
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}
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public:
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static Base* Create(std::string name, Arg1 a1) {
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func factory = FactoryBase<func>::Find(name);
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if (factory) {
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return factory(a1);
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}
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else {
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return NULL;
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}
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}
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template<class T>
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static void Register(std::string name, bool hide = false, std::vector<std::string> subTypes = std::vector<std::string>()) {
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FactoryBase<func>::DoRegister(&Factory1<Base, Arg1>::template create<T>, name, hide, subTypes);
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}
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};
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