public CBORObject ResolveSharedRefsIfNeeded(CBORObject obj)
{
if (this.hasSharableObjects)
{
var sharedRefs = new SharedRefs();
return(ResolveSharedRefs(obj, sharedRefs));
}
return(obj);
}
public CBORObject Read()
{
CBORObject obj = this.options.AllowEmpty ?
this.ReadInternalOrEOF() : this.ReadInternal();
if (this.options.ResolveReferences && this.hasSharableObjects)
{
var sharedRefs = new SharedRefs();
return(ResolveSharedRefs(obj, sharedRefs));
}
return(obj);
}
private static CBORObject ResolveSharedRefs(
CBORObject obj,
SharedRefs sharedRefs)
{
if (obj == null)
{
return(null);
}
CBORType type = obj.Type;
bool hasTag = obj.HasMostOuterTag(29);
if (hasTag)
{
CBORObject untagged = obj.UntagOne();
if (untagged.IsTagged ||
untagged.Type != CBORType.Integer ||
untagged.AsNumber().IsNegative())
{
throw new CBORException(
"Shared ref index must be an untagged integer 0 or greater");
}
return(sharedRefs.GetObject(untagged.AsEIntegerValue()));
}
hasTag = obj.HasMostOuterTag(28);
if (hasTag)
{
obj = obj.UntagOne();
sharedRefs.AddObject(obj);
}
if (type == CBORType.Map)
{
foreach (CBORObject key in obj.Keys)
{
CBORObject value = obj[key];
CBORObject newvalue = ResolveSharedRefs(value, sharedRefs);
if (value != newvalue)
{
obj[key] = newvalue;
}
}
}
else if (type == CBORType.Array)
{
for (var i = 0; i < obj.Count; ++i)
{
obj[i] = ResolveSharedRefs(obj[i], sharedRefs);
}
}
return(obj);
}
private static CBORObject ResolveSharedRefs(
CBORObject obj,
SharedRefs sharedRefs)
{
int type = obj.ItemType;
bool hasTag = obj.MostOuterTag.Equals((EInteger)29);
if (hasTag)
{
return(sharedRefs.GetObject(obj.AsEInteger()));
}
hasTag = obj.MostOuterTag.Equals((EInteger)28);
if (hasTag)
{
obj = obj.Untag();
sharedRefs.AddObject(obj);
}
if (type == CBORObject.CBORObjectTypeMap)
{
foreach (CBORObject key in obj.Keys)
{
CBORObject value = obj[key];
CBORObject newvalue = ResolveSharedRefs(value, sharedRefs);
if (value != newvalue)
{
obj[key] = newvalue;
}
}
}
else if (type == CBORObject.CBORObjectTypeArray)
{
for (var i = 0; i < obj.Count; ++i)
{
obj[i] = ResolveSharedRefs(obj[i], sharedRefs);
}
}
return(obj);
}
public CBORReader(Stream inStream)
{
this.stream = inStream;
this.sharedRefs = new SharedRefs();
this.policy = CBORDuplicatePolicy.Overwrite;
}