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/* Boost.Flyweight test of a custom factory.
*
* Copyright 2006-2008 Joaquin M Lopez Munoz.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* See http://www.boost.org/libs/flyweight for library home page.
*/
#include "test_custom_factory.hpp"
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/flyweight/flyweight.hpp>
#include <boost/flyweight/refcounted.hpp>
#include <boost/flyweight/simple_locking.hpp>
#include <boost/flyweight/static_holder.hpp>
#include <boost/mpl/aux_/lambda_support.hpp>
#include <list>
#include "test_basic_template.hpp"
using namespace boost::flyweights;
/* Info on list-update containers:
* http://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/lu_based_containers.html
*/
template<typename Entry,typename Key>
class lu_factory_class:public factory_marker
{
struct entry_type
{
entry_type(const Entry& x_):x(x_),count(0){}
Entry x;
std::size_t count;
};
typedef std::list<entry_type> container_type;
public:
typedef typename container_type::iterator handle_type;
handle_type insert(const Entry& x)
{
handle_type h;
for(h=cont.begin();h!=cont.end();++h){
if(static_cast<const Key&>(h->x)==static_cast<const Key&>(x)){
if(++(h->count)==10){
h->count=0;
cont.splice(cont.begin(),cont,h); /* move to front */
}
return h;
}
}
cont.push_back(entry_type(x));
h=cont.end();
--h;
return h;
}
void erase(handle_type h)
{
cont.erase(h);
}
const Entry& entry(handle_type h){return h->x;}
private:
container_type cont;
public:
typedef lu_factory_class type;
BOOST_MPL_AUX_LAMBDA_SUPPORT(2,lu_factory_class,(Entry,Key))
};
struct lu_factory:factory_marker
{
template<typename Entry,typename Key>
struct apply
{
typedef lu_factory_class<Entry,Key> type;
};
};
struct custom_factory_flyweight_specifier1
{
template<typename T>
struct apply
{
typedef flyweight<T,lu_factory> type;
};
};
struct custom_factory_flyweight_specifier2
{
template<typename T>
struct apply
{
typedef flyweight<
T,
lu_factory_class<boost::mpl::_1,boost::mpl::_2>
> type;
};
};
void test_custom_factory()
{
test_basic_template<custom_factory_flyweight_specifier1>();
test_basic_template<custom_factory_flyweight_specifier2>();
}
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