public static GroupListOverlay <T> Factory(
IBinaryReadStream stream,
ReadOnlyMemorySlice <byte> data,
BinaryOverlayFactoryPackage package,
ObjectType objectType,
int offset)
{
List <int> locations = new List <int>();
stream.Position -= package.MetaData.Constants.GroupConstants.HeaderLength;
var groupMeta = stream.GetGroup(package);
var finalPos = stream.Position + groupMeta.TotalLength;
stream.Position += package.MetaData.Constants.GroupConstants.HeaderLength;
// Parse locations
while (stream.Position < finalPos)
{
VariableHeader meta = package.MetaData.Constants.Constants(objectType).VariableMeta(stream.RemainingMemory);
locations.Add(checked ((int)stream.Position - offset));
stream.Position += checked ((int)meta.TotalLength);
}
return(new GroupListOverlay <T>(
locations,
data,
package));
}
public static void FillModTypes(
IBinaryReadStream stream,
ModTypeFillWrapper fill,
BinaryOverlayFactoryPackage package)
{
int? lastParsed = null;
ModHeader headerMeta = stream.GetModHeader(package);
var minimumFinalPos = checked ((int)(stream.Position + headerMeta.TotalLength));
fill(
stream: stream,
finalPos: minimumFinalPos,
offset: 0,
type: headerMeta.RecordType,
lastParsed: lastParsed,
recordTypeConverter: null);
stream.Position = (int)headerMeta.TotalLength;
while (!stream.Complete)
{
GroupHeader groupMeta = stream.GetGroup(package);
if (!groupMeta.IsGroup)
{
throw new ArgumentException("Did not see GRUP header as expected.");
}
if (groupMeta.ContentLength == 0)
{
stream.Position += groupMeta.TotalLength;
continue;
}
minimumFinalPos = checked ((int)(stream.Position + groupMeta.TotalLength));
var parsed = fill(
stream: stream,
finalPos: minimumFinalPos,
offset: 0,
type: groupMeta.ContainedRecordType,
lastParsed: lastParsed,
recordTypeConverter: null);
if (!parsed.KeepParsing)
{
break;
}
if (!parsed.KeepParsing)
{
break;
}
if (minimumFinalPos > stream.Position)
{
stream.Position = checked ((int)minimumFinalPos);
}
lastParsed = parsed.ParsedIndex;
}
}
public static GroupMajorRecordCacheWrapper <T> Factory(
IBinaryReadStream stream,
ReadOnlyMemorySlice <byte> data,
BinaryOverlayFactoryPackage package,
int offset)
{
Dictionary <FormKey, int> locationDict = new Dictionary <FormKey, int>();
stream.Position -= package.MetaData.Constants.GroupConstants.HeaderLength;
var groupMeta = stream.GetGroup(package.MetaData);
var finalPos = stream.Position + groupMeta.TotalLength;
stream.Position += package.MetaData.Constants.GroupConstants.HeaderLength;
// Parse MajorRecord locations
ObjectType?lastParsed = default;
while (stream.Position < finalPos)
{
VariableHeader varMeta = package.MetaData.Constants.NextRecordVariableMeta(stream.RemainingMemory);
if (varMeta.IsGroup)
{
if (lastParsed != ObjectType.Record)
{
throw new DataMisalignedException("Unexpected Group encountered which was not after a major record: " + GroupRecordTypeGetter <T> .GRUP_RECORD_TYPE);
}
stream.Position += checked ((int)varMeta.TotalLength);
lastParsed = ObjectType.Group;
}
else
{
MajorRecordHeader majorMeta = package.MetaData.Constants.MajorRecord(stream.RemainingMemory);
if (majorMeta.RecordType != GroupRecordTypeGetter <T> .GRUP_RECORD_TYPE)
{
throw new DataMisalignedException("Unexpected type encountered when parsing MajorRecord locations: " + majorMeta.RecordType);
}
var formKey = FormKey.Factory(package.MetaData.MasterReferences !, majorMeta.FormID.Raw);
locationDict.Add(formKey, checked ((int)(stream.Position - offset)));
stream.Position += checked ((int)majorMeta.TotalLength);
lastParsed = ObjectType.Record;
}
}
return(new GroupMajorRecordCacheWrapper <T>(
locationDict,
data,
package));
}
