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Fix the registration of stores

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This commit is contained in:
regnat 2020-09-09 11:18:12 +02:00
parent 7d5bdf8b56
commit fa32560169
9 changed files with 27 additions and 19 deletions
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29
src/libstore/store-api.hh
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@ -749,25 +749,32 @@ std::list<ref<Store>> getDefaultSubstituters();
struct StoreFactory
{
std::vector<std::string> uriPrefixes;
std::function<std::shared_ptr<Store> (const std::string & uri, const Store::Params & params)> open;
};
typedef std::vector<StoreFactory> Implementations;
static Implementations * implementations = new Implementations;
struct Implementations
{
static std::vector<StoreFactory> * registered;
template<typename T>
static void add()
{
if (!registered) registered = new std::vector<StoreFactory>();
StoreFactory factory{
.open =
([](const std::string & uri, const Store::Params & params)
-> std::shared_ptr<Store>
{ return std::make_shared<T>(uri, params); }),
};
registered->push_back(factory);
}
};
template<typename T>
struct RegisterStoreImplementation
{
RegisterStoreImplementation()
{
StoreFactory factory{
.uriPrefixes = T::uriPrefixes(),
.open =
([](const std::string & uri, const Store::Params & params)
-> std::shared_ptr<Store>
{ return std::make_shared<T>(uri, params); })
};
implementations->push_back(factory);
Implementations::add<T>();
}
};