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interface_ops.hpp
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interface_ops.hpp
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#pragma once
#include "types.hpp"
#include "utils.hpp"
#include <any>
#include <map>
#include <memory>
#include <string>
#include <type_traits>
#include <utility>
namespace sdbusplus
{
namespace bus
{
class bus;
}
} // namespace sdbusplus
namespace phosphor
{
namespace inventory
{
namespace manager
{
template <typename T>
struct HasProperties
{
private:
using yes = char;
struct no
{
char array[2];
};
template <typename U>
static constexpr yes test(typename U::PropertiesVariant*);
template <typename U>
static constexpr no test(...);
public:
static constexpr auto value = sizeof(test<T>(0)) == sizeof(yes);
};
template <typename T, typename Enable = void>
struct MakeInterface
{
static std::any op(sdbusplus::bus_t& bus, const char* path,
const Interface&, bool)
{
return std::any(std::make_shared<T>(bus, path));
}
};
template <typename T>
struct MakeInterface<T, std::enable_if_t<HasProperties<T>::value>>
{
static std::any op(sdbusplus::bus_t& bus, const char* path,
const Interface& props, bool deferSignal)
{
using InterfaceVariant =
std::map<std::string, typename T::PropertiesVariant>;
InterfaceVariant v;
for (const auto& p : props)
{
v.emplace(p.first,
convertVariant<typename T::PropertiesVariant>(p.second));
}
return std::any(std::make_shared<T>(bus, path, v, deferSignal));
}
};
template <typename T, typename Enable = void>
struct GetPropertyValue
{
static InterfaceVariantType op(const std::string /* propertyName */,
std::any& /* holder */)
{
return InterfaceVariantType{};
}
};
template <typename T>
struct GetPropertyValue<T, std::enable_if_t<HasProperties<T>::value>>
{
static InterfaceVariantType op(const std::string propertyName,
std::any& holder)
{
auto& iface = *std::any_cast<std::shared_ptr<T>&>(holder);
auto property = iface.getPropertyByName(propertyName);
return convertVariant<InterfaceVariantType>(property);
}
};
template <typename T, typename Enable = void>
struct AssignInterface
{
static void op(const Interface&, std::any&, bool) {}
};
template <typename T>
struct AssignInterface<T, std::enable_if_t<HasProperties<T>::value>>
{
static void op(const Interface& props, std::any& holder, bool deferSignal)
{
auto& iface = *std::any_cast<std::shared_ptr<T>&>(holder);
for (const auto& p : props)
{
iface.setPropertyByName(
p.first,
convertVariant<typename T::PropertiesVariant>(p.second),
deferSignal);
}
}
};
template <typename T, typename Ops, typename Enable = void>
struct SerializeInterface
{
static void op(const std::string& path, const std::string& iface,
const std::any&)
{
Ops::serialize(path, iface);
}
};
template <typename T, typename Ops>
struct SerializeInterface<T, Ops, std::enable_if_t<HasProperties<T>::value>>
{
static void op(const std::string& path, const std::string& iface,
const std::any& holder)
{
const auto& object = *std::any_cast<const std::shared_ptr<T>&>(holder);
Ops::serialize(path, iface, object);
}
};
template <typename T, typename Ops, typename Enable = void>
struct DeserializeInterface
{
static void op(const std::string& path, const std::string& iface, std::any&)
{
Ops::deserialize(path, iface);
}
};
template <typename T, typename Ops>
struct DeserializeInterface<T, Ops, std::enable_if_t<HasProperties<T>::value>>
{
static void op(const std::string& path, const std::string& iface,
std::any& holder)
{
auto& object = *std::any_cast<std::shared_ptr<T>&>(holder);
Ops::deserialize(path, iface, object);
}
};
struct DummyInterface
{};
using MakeInterfaceType =
std::add_pointer_t<decltype(MakeInterface<DummyInterface>::op)>;
using AssignInterfaceType =
std::add_pointer_t<decltype(AssignInterface<DummyInterface>::op)>;
template <typename Ops>
using SerializeInterfaceType =
std::add_pointer_t<decltype(SerializeInterface<DummyInterface, Ops>::op)>;
template <typename Ops>
using DeserializeInterfaceType =
std::add_pointer_t<decltype(DeserializeInterface<DummyInterface, Ops>::op)>;
using GetPropertyValueType =
std::add_pointer_t<decltype(GetPropertyValue<DummyInterface>::op)>;
} // namespace manager
} // namespace inventory
} // namespace phosphor