status_t
BListValueNode::CreateChildrenInRange(TeamTypeInformation* info,
int32 lowIndex, int32 highIndex)
{
if (fLocationResolutionState != B_OK)
return fLocationResolutionState;
if (lowIndex < 0)
lowIndex = 0;
if (highIndex >= fItemCount)
highIndex = fItemCount - 1;
if (!fCountChildCreated && fItemCountType != NULL) {
BListItemCountNodeChild* countChild = new(std::nothrow)
BListItemCountNodeChild(fItemCountLocation, this, fItemCountType);
if (countChild == NULL)
return B_NO_MEMORY;
fCountChildCreated = true;
countChild->SetContainer(fContainer);
fChildren.AddItem(countChild);
}
BReference<Type> addressTypeRef;
Type* type = NULL;
CompoundType* objectType = dynamic_cast<CompoundType*>(fType);
if (objectType->CountTemplateParameters() != 0) {
AddressType* addressType = NULL;
status_t result = objectType->TemplateParameterAt(0)->GetType()
->CreateDerivedAddressType(DERIVED_TYPE_POINTER, addressType);
if (result != B_OK)
return result;
type = addressType;
addressTypeRef.SetTo(type, true);
} else {
BString typeName;
TypeLookupConstraints constraints;
constraints.SetTypeKind(TYPE_ADDRESS);
constraints.SetBaseTypeName("void");
status_t result = info->LookupTypeByName(typeName, constraints,
type);
if (result != B_OK)
return result;
}
for (int32 i = lowIndex; i <= highIndex; i++)
{
BListElementNodeChild* child =
new(std::nothrow) BListElementNodeChild(this, i, type);
if (child == NULL)
return B_NO_MEMORY;
child->SetContainer(fContainer);
fChildren.AddItem(child);
}
fChildrenCreated = true;
if (fContainer != NULL)
fContainer->NotifyValueNodeChildrenCreated(this);
return B_OK;
}
status_t
BListValueNode::ResolvedLocationAndValue(ValueLoader* valueLoader,
ValueLocation*& _location, Value*& _value)
{
// get the location
ValueLocation* location = NodeChild()->Location();
if (location == NULL)
return B_BAD_VALUE;
// get the value type
type_code valueType;
if (valueLoader->GetArchitecture()->AddressSize() == 4) {
valueType = B_UINT32_TYPE;
TRACE_LOCALS(" -> 32 bit\n");
} else {
valueType = B_UINT64_TYPE;
TRACE_LOCALS(" -> 64 bit\n");
}
// load the value data
status_t error = B_OK;
_location = location;
_value = NULL;
ValueLocation* memberLocation = NULL;
CompoundType* baseType = dynamic_cast<CompoundType*>(fType);
if (baseType->CountTemplateParameters() != 0) {
// for BObjectList we need to walk up
// the hierarchy: BObjectList -> _PointerList_ -> BList
if (baseType->CountBaseTypes() == 0)
return B_BAD_DATA;
baseType = dynamic_cast<CompoundType*>(baseType->BaseTypeAt(0)
->GetType());
if (baseType == NULL || baseType->Name() != "_PointerList_")
return B_BAD_DATA;
if (baseType->CountBaseTypes() == 0)
return B_BAD_DATA;
baseType = dynamic_cast<CompoundType*>(baseType->BaseTypeAt(0)
->GetType());
if (baseType == NULL || baseType->Name() != "BList")
return B_BAD_DATA;
}
for (int32 i = 0; i < baseType->CountDataMembers(); i++) {
DataMember* member = baseType->DataMemberAt(i);
if (strcmp(member->Name(), "fObjectList") == 0) {
error = baseType->ResolveDataMemberLocation(member,
*location, memberLocation);
BReference<ValueLocation> locationRef(memberLocation, true);
if (error != B_OK) {
TRACE_LOCALS(
"BListValueNode::ResolvedLocationAndValue(): "
"failed to resolve location of header member: %s\n",
strerror(error));
return error;
}
error = valueLoader->LoadValue(memberLocation, valueType,
false, fDataLocation);
if (error != B_OK)
return error;
} else if (strcmp(member->Name(), "fItemCount") == 0) {
error = baseType->ResolveDataMemberLocation(member,
*location, memberLocation);
BReference<ValueLocation> locationRef(memberLocation, true);
if (error != B_OK) {
TRACE_LOCALS(
"BListValueNode::ResolvedLocationAndValue(): "
"failed to resolve location of header member: %s\n",
strerror(error));
return error;
}
fItemCountType = member->GetType();
fItemCountType->AcquireReference();
fItemCountLocation = memberLocation->PieceAt(0).address;
BVariant listSize;
error = valueLoader->LoadValue(memberLocation, valueType,
false, listSize);
if (error != B_OK)
return error;
fItemCount = listSize.ToInt32();
TRACE_LOCALS(
"BListValueNode::ResolvedLocationAndValue(): "
"detected list size %" B_PRId32 "\n",
fItemCount);
}
memberLocation = NULL;
}
return B_OK;
}