void
FreezeScript::TransformVisitor::transformObject(const ObjectDataPtr& dest, const ObjectDataPtr& src)
{
//
// The source object must be present in the object map (we currently don't support
// transforming two ObjectData instances from the same Slice unit - this transform
// would be handled by-reference at the ObjectRef level). We must update the object
// map before transforming members in order to handle cycles.
//
ObjectDataMap& objectDataMap = _info->getObjectDataMap();
ObjectDataMap::iterator p = objectDataMap.find(src.get());
assert(p != objectDataMap.end());
assert(p->second == 0);
objectDataMap.erase(p);
objectDataMap.insert(ObjectDataMap::value_type(src.get(), dest));
p = objectDataMap.find(src.get());
try
{
//
// Transform members with the same name.
//
DataMemberMap srcMap = src->getMembers();
DataMemberMap destMap = dest->getMembers();
string typeName = typeToString(dest->getType());
for(DataMemberMap::iterator q = destMap.begin(); q != destMap.end(); ++q)
{
DataMemberMap::iterator r = srcMap.find(q->first);
if(r != srcMap.end())
{
string context = typeName + " member " + q->first + " value";
TransformVisitor v(r->second, _info, context);
q->second->visit(v);
}
}
}
catch(...)
{
objectDataMap.erase(p);
#if (defined(_MSC_VER) && (_MSC_VER >= 1600))
objectDataMap.insert(ObjectDataMap::value_type(src.get(), static_cast<ObjectDataPtr>(nullptr)));
#else
objectDataMap.insert(ObjectDataMap::value_type(src.get(), 0));
#endif
throw;
}
}
void
FreezeScript::TransformVisitor::visitObject(const ObjectRefPtr& dest)
{
Slice::TypePtr type = dest->getType();
ObjectRefPtr src = ObjectRefPtr::dynamicCast(_src);
if(!src)
{
typeMismatchError(type, _src->getType());
}
else if(_info->doDefaultTransform(type))
{
ObjectDataPtr srcValue = src->getValue();
Slice::TypePtr srcType = src->getType();
if(!srcValue)
{
//
// Allow a nil value from type Object.
//
if(Slice::BuiltinPtr::dynamicCast(srcType) || isCompatible(type, srcType))
{
dest->setValue(0);
}
else
{
typeMismatchError(type, srcType);
}
}
else
{
Slice::TypePtr srcValueType = srcValue->getType();
if(isCompatible(type, srcValueType))
{
//
// If the types are in the same Slice unit, then we can simply
// copy the reference. Otherwise, we check the object map to
// see if an equivalent object has already been created, and
// if not, then we have to create one.
//
if(type->unit().get() == srcValueType->unit().get())
{
dest->setValue(srcValue);
}
else
{
ObjectDataMap& objectDataMap = _info->getObjectDataMap();
ObjectDataMap::iterator p = objectDataMap.find(srcValue.get());
if(p != objectDataMap.end() && p->second)
{
dest->setValue(p->second);
}
else
{
//
// If the type has been renamed, we need to get its equivalent
// in the new Slice definitions.
//
Slice::TypePtr newType = _info->getRenamedType(srcValueType);
if(!newType)
{
string name = typeToString(srcValueType);
Slice::TypeList l = type->unit()->lookupType(name, false);
if(l.empty())
{
throw ClassNotFoundException(name);
}
newType = l.front();
}
//
// Use createObject() so that an initializer is invoked if necessary.
//
DataPtr newObj = _info->getDataFactory()->createObject(newType, false);
ObjectRefPtr newRef = ObjectRefPtr::dynamicCast(newObj);
assert(newRef);
ObjectDataPtr newValue = newRef->getValue();
try
{
transformObject(newValue, srcValue);
}
catch(...)
{
newObj->destroy();
throw;
}
dest->setValue(newValue);
newObj->destroy();
}
}
}
else
{
typeMismatchError(type, srcValueType);
}
}
}
_info->executeCustomTransform(dest, _src);
}