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// slang-castable.cpp
#include "slang-castable.h"
namespace Slang
{
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! CastableUtil !!!!!!!!!!!!!!!!!!!!!!!!!!! */
/* static */ ComPtr<ICastable> CastableUtil::getCastable(ISlangUnknown* unk)
{
SLANG_ASSERT(unk);
ComPtr<ICastable> castable;
if (SLANG_SUCCEEDED(unk->queryInterface(SLANG_IID_PPV_ARGS(castable.writeRef()))))
{
SLANG_ASSERT(castable);
}
else
{
castable = new UnknownCastableAdapter(unk);
}
return castable;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! UnknownCastableAdapter !!!!!!!!!!!!!!!!!!!!!!!!!!! */
void* UnknownCastableAdapter::castAs(const Guid& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
if (auto obj = getObject(guid))
{
return obj;
}
if (m_found && guid == m_foundGuid)
{
return m_found;
}
ComPtr<ISlangUnknown> cast;
if (SLANG_SUCCEEDED(m_contained->queryInterface(guid, (void**)cast.writeRef())) && cast)
{
// Save the interface in the cache
m_found = cast;
m_foundGuid = guid;
return cast;
}
return nullptr;
}
void* UnknownCastableAdapter::getInterface(const Guid& guid)
{
if (guid == ISlangUnknown::getTypeGuid() || guid == ICastable::getTypeGuid() ||
guid == IUnknownCastableAdapter::getTypeGuid())
{
return static_cast<IUnknownCastableAdapter*>(this);
}
return nullptr;
}
void* UnknownCastableAdapter::getObject(const Guid& guid)
{
SLANG_UNUSED(guid);
return nullptr;
}
} // namespace Slang
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