public List <ScopeDescriptor> CreateScopeDescriptors(long minPosition, long maxPosition)
{
var scopeDescriptors = new List <ScopeDescriptor>();
var fieldDescriptors = new List <FieldDescriptor>();
FieldDescriptor previousFieldDescriptor = null;
long previousPosition = minPosition;
int previousByteSize = 0;
foreach (var kvp in mPositionMap.OrderBy(x => x.Key).Where(
x => x.Key >= minPosition && x.Key < maxPosition))
{
long position = kvp.Key;
int byteSize = kvp.Value;
var valueType =
byteSize == 2 ? ValueType.Int16 :
byteSize == 4 ? ValueType.Int32 :
byteSize == 8 ? ValueType.Int64 :
throw new InvalidDataException("Expected value of Int16, Int32 or Int64 type.");
if (previousFieldDescriptor == null || previousFieldDescriptor.ValueType != valueType ||
previousPosition + previousByteSize != position)
{
fieldDescriptors.Add(previousFieldDescriptor = new FieldDescriptor
{
Position = position - minPosition,
RepeatCount = 1,
ValueType = valueType
});
}
else
{
previousFieldDescriptor.RepeatCount++;
}
previousPosition = position;
previousByteSize = byteSize;
}
// TODO: Optimize
var scopeDescriptor = new ScopeDescriptor {
Position = fieldDescriptors[0].Position, RepeatCount = 1
};
scopeDescriptor.FieldDescriptors.AddRange(fieldDescriptors);
scopeDescriptors.Add(scopeDescriptor);
return(scopeDescriptors);
}
public List <ScopeDescriptor> CreateScopeDescriptors(long dataSize)
{
var scopeDescriptors = new List <ScopeDescriptor>();
var fieldDescriptors = new List <FieldDescriptor>();
for (long offset = 0; offset < dataSize;)
{
int type = GetBitArrayValue(offset);
if (type == 3)
{
offset++;
continue;
}
var fieldDescriptor = new FieldDescriptor
{
Position = offset,
ValueType = ( ValueType )type,
RepeatCount = 1
};
int byteSize = 2 << type;
for ( ; offset < dataSize;)
{
offset += byteSize;
if (GetBitArrayValue(offset) != type)
{
break;
}
fieldDescriptor.RepeatCount++;
}
fieldDescriptors.Add(fieldDescriptor);
}
// TODO: Optimize
var scopeDescriptor = new ScopeDescriptor {
Position = fieldDescriptors[0].Position, RepeatCount = 1
};
scopeDescriptor.FieldDescriptors.AddRange(fieldDescriptors);
scopeDescriptors.Add(scopeDescriptor);
return(scopeDescriptors);
}