India/cocos2d-x/cocos/base/ObjectFactory.cpp

/****************************************************************************
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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#include <functional>
#include "base/ObjectFactory.h"


NS_CC_BEGIN

ObjectFactory::TInfo::TInfo(void)
:_class("")
,_fun(nullptr)
,_func(nullptr)
{
}

ObjectFactory::TInfo::TInfo(const std::string& type, Instance ins)
:_class(type)
,_fun(ins)
,_func(nullptr)
{
    ObjectFactory::getInstance()->registerType(*this);
}

ObjectFactory::TInfo::TInfo(const std::string& type, InstanceFunc ins)
    :_class(type)
    ,_fun(nullptr)
    ,_func(ins)
{
    ObjectFactory::getInstance()->registerType(*this);
}

ObjectFactory::TInfo::TInfo(const TInfo &t)
{
    _class = t._class;
    _fun = t._fun;
    _func = t._func;
}

ObjectFactory::TInfo::~TInfo(void)
{
   _class = "";
   _fun = nullptr;
   _func = nullptr;
}

ObjectFactory::TInfo& ObjectFactory::TInfo::operator= (const TInfo &t)
{
    _class = t._class;
    _fun = t._fun;
    _func = t._func;
    return *this;
}


ObjectFactory* ObjectFactory::_sharedFactory = nullptr;

ObjectFactory::ObjectFactory(void)
{

}

ObjectFactory::~ObjectFactory(void)
{
    _typeMap.clear();
}

ObjectFactory* ObjectFactory::getInstance()
{
    if ( nullptr == _sharedFactory)
    {
        _sharedFactory = new (std::nothrow) ObjectFactory();
    }
    return _sharedFactory;
}

void ObjectFactory::destroyInstance()
{
    CC_SAFE_DELETE(_sharedFactory);
}

Ref* ObjectFactory::createObject(const std::string &name)
{
    Ref *o = nullptr;
    do 
    {
        const TInfo t = _typeMap[name];
        if (t._fun != nullptr)
        {
            o = t._fun();
        }else if (t._func != nullptr)
        {
            o = t._func();
        }
    } while (0);
   
    return o;
}

void ObjectFactory::registerType(const TInfo &t)
{
    _typeMap.emplace(t._class, t);
}

NS_CC_END