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#include "slang-blob.h"
namespace Slang {
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BlobBase !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
ISlangUnknown* BlobBase::getInterface(const Guid& guid)
{
if (guid == ISlangUnknown::getTypeGuid() ||
guid == ISlangBlob::getTypeGuid())
{
return static_cast<ISlangBlob*>(this);
}
if (guid == ICastable::getTypeGuid())
{
return static_cast<ICastable*>(this);
}
return nullptr;
}
void* BlobBase::getObject(const Guid& guid)
{
SLANG_UNUSED(guid);
return nullptr;
}
void* BlobBase::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
return getObject(guid);
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! StringBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
void StringBlob::_setUniqueRep(StringRepresentation* uniqueRep)
{
SLANG_ASSERT(uniqueRep == nullptr || uniqueRep->isUniquelyReferenced());
m_uniqueRep = uniqueRep;
m_slice = uniqueRep ?
UnownedTerminatedStringSlice(uniqueRep->getData(), uniqueRep->getLength()) :
UnownedTerminatedStringSlice();
}
/* static */StringRepresentation* StringBlob::_createUniqueCopy(StringRepresentation* rep)
{
if (rep)
{
// If the length is 0, we can just init as empty
auto length = rep->getLength();
if (length == 0)
{
return nullptr;
}
else
{
const UnownedStringSlice slice(rep->getData(), length);
return StringRepresentation::createWithReference(slice);
}
}
return nullptr;
}
void StringBlob::_setWithCopy(StringRepresentation* rep)
{
_setUniqueRep(_createUniqueCopy(rep));
}
void StringBlob::_setWithMove(StringRepresentation* rep)
{
if (rep && !rep->isUniquelyReferenced())
{
_setUniqueRep(_createUniqueCopy(rep));
// We need to release a ref as rep is passed in with the 'current' ref count
rep->releaseReference();
}
else
{
_setUniqueRep(rep);
}
}
/* static */ComPtr<ISlangBlob> StringBlob::create(const UnownedStringSlice& slice)
{
StringRepresentation* rep = nullptr;
if (slice.getLength())
{
rep = StringRepresentation::createWithReference(slice);
}
auto blob = new StringBlob;
// rep must be unique at this point
blob->_setUniqueRep(rep);
return ComPtr<ISlangBlob>(blob);
}
/* static */ComPtr<ISlangBlob> StringBlob::create(const String& in)
{
auto blob = new StringBlob;
blob->_setWithCopy(in.getStringRepresentation());
return ComPtr<ISlangBlob>(blob);
}
/* static */ComPtr<ISlangBlob> StringBlob::moveCreate(String& in)
{
auto blob = new StringBlob;
blob->_setWithMove(in.detachStringRepresentation());
return ComPtr<ISlangBlob>(blob);
}
/* static */ComPtr<ISlangBlob> StringBlob::moveCreate(String&& in)
{
auto blob = new StringBlob;
blob->_setWithMove(in.detachStringRepresentation());
return ComPtr<ISlangBlob>(blob);
}
StringBlob::~StringBlob()
{
if (m_uniqueRep)
{
delete m_uniqueRep;
}
}
void* StringBlob::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
return getObject(guid);
}
void* StringBlob::getObject(const Guid& guid)
{
// Can allow accessing the contained String
if (guid == getTypeGuid())
{
return this;
}
// Can always be accessed as terminated char*
if (guid == SlangTerminatedChars::getTypeGuid())
{
return const_cast<char*>(m_slice.begin());
}
return nullptr;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! RawBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
void* RawBlob::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
return getObject(guid);
}
void* RawBlob::getObject(const Guid& guid)
{
// If the data has 0 termination, we can return the pointer
if (guid == SlangTerminatedChars::getTypeGuid() && m_data.isTerminated())
{
return (char*)m_data.getData();
}
return nullptr;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ScopeBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
void* ScopeBlob::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
if (auto obj = getObject(guid))
{
return obj;
}
// If the contained thing is castable, ask it
if (m_castable)
{
return m_castable->castAs(guid);
}
return nullptr;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ListBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
void* ListBlob::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
return getObject(guid);
}
void* ListBlob::getObject(const Guid& guid)
{
// If the data is terminated return the pointer
if (guid == SlangTerminatedChars::getTypeGuid())
{
const auto count = m_data.getCount();
if (m_data.getCapacity() > count)
{
auto buf = m_data.getBuffer();
if (buf[count] == 0)
{
return (char*)buf;
}
}
}
return nullptr;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! StaticBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
SlangResult StaticBlob::queryInterface(SlangUUID const& guid, void** outObject)
{
if (auto intf = getInterface(guid))
{
*outObject = intf;
return SLANG_OK;
}
return SLANG_E_NO_INTERFACE;
}
void* StaticBlob::castAs(const SlangUUID& guid)
{
if (auto intf = getInterface(guid))
{
return intf;
}
return getObject(guid);
}
ISlangUnknown* StaticBlob::getInterface(const Guid& guid)
{
if (guid == ISlangUnknown::getTypeGuid() ||
guid == ISlangBlob::getTypeGuid())
{
return static_cast<ISlangBlob*>(this);
}
if (guid == ICastable::getTypeGuid())
{
return static_cast<ICastable*>(this);
}
return nullptr;
}
void* StaticBlob::getObject(const Guid& guid)
{
SLANG_UNUSED(guid);
return nullptr;
}
} // namespace Slang
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