public NbtTag ReadAsTag()
{
switch (state)
{
case NbtParseState.Error:
throw new InvalidReaderStateException(ErroneousStateError);
case NbtParseState.AtStreamEnd:
throw new EndOfStreamException();
case NbtParseState.AtStreamBeginning:
case NbtParseState.AtCompoundEnd:
ReadToFollowing();
break;
}
// get this tag
NbtTag parent;
if (TagType == NbtTagType.Compound)
{
parent = new NbtCompound(TagName);
}
else if (TagType == NbtTagType.List)
{
parent = new NbtList(TagName, ListType);
}
else if (atValue)
{
NbtTag result = ReadValueAsTag();
ReadToFollowing();
// if we're at a value tag, there are no child tags to read
return(result);
}
else
{
// end tags cannot be read-as-tags (there is no corresponding NbtTag object)
throw new InvalidOperationException(NoValueToReadError);
}
int startingDepth = Depth;
int parentDepth = Depth;
do
{
ReadToFollowing();
// Going up the file tree, or end of document: wrap up
while (Depth <= parentDepth && parent.Parent != null)
{
parent = parent.Parent;
parentDepth--;
}
if (Depth <= startingDepth)
{
break;
}
NbtTag thisTag;
if (TagType == NbtTagType.Compound)
{
thisTag = new NbtCompound(TagName);
AddToParent(thisTag, parent);
parent = thisTag;
parentDepth = Depth;
}
else if (TagType == NbtTagType.List)
{
thisTag = new NbtList(TagName, ListType);
AddToParent(thisTag, parent);
parent = thisTag;
parentDepth = Depth;
}
else if (TagType != NbtTagType.End)
{
thisTag = ReadValueAsTag();
AddToParent(thisTag, parent);
}
} while (true);
return(parent);
}
internal override void SkipTag(NbtBinaryReader readStream)
{
while (true)
{
NbtTagType nextTag = readStream.ReadTagType();
NbtTag newTag;
switch (nextTag)
{
case NbtTagType.End:
return;
case NbtTagType.Byte:
newTag = new NbtByte();
break;
case NbtTagType.Short:
newTag = new NbtShort();
break;
case NbtTagType.Int:
newTag = new NbtInt();
break;
case NbtTagType.Long:
newTag = new NbtLong();
break;
case NbtTagType.Float:
newTag = new NbtFloat();
break;
case NbtTagType.Double:
newTag = new NbtDouble();
break;
case NbtTagType.ByteArray:
newTag = new NbtByteArray();
break;
case NbtTagType.String:
newTag = new NbtString();
break;
case NbtTagType.List:
newTag = new NbtList();
break;
case NbtTagType.Compound:
newTag = new NbtCompound();
break;
case NbtTagType.IntArray:
newTag = new NbtIntArray();
break;
default:
throw new NbtFormatException("Unsupported tag type found in NBT_Compound: " + nextTag);
}
readStream.SkipString();
newTag.SkipTag(readStream);
}
}
internal override bool ReadTag(NbtBinaryReader readStream)
{
if (readStream.Selector != null && !readStream.Selector(this))
{
SkipTag(readStream);
return(false);
}
ListType = readStream.ReadTagType();
int length = readStream.ReadInt32();
if (length < 0)
{
throw new NbtFormatException("Negative list size given.");
}
for (int i = 0; i < length; i++)
{
NbtTag newTag;
switch (ListType)
{
case NbtTagType.Byte:
newTag = new NbtByte();
break;
case NbtTagType.Short:
newTag = new NbtShort();
break;
case NbtTagType.Int:
newTag = new NbtInt();
break;
case NbtTagType.Long:
newTag = new NbtLong();
break;
case NbtTagType.Float:
newTag = new NbtFloat();
break;
case NbtTagType.Double:
newTag = new NbtDouble();
break;
case NbtTagType.ByteArray:
newTag = new NbtByteArray();
break;
case NbtTagType.String:
newTag = new NbtString();
break;
case NbtTagType.List:
newTag = new NbtList();
break;
case NbtTagType.Compound:
newTag = new NbtCompound();
break;
case NbtTagType.IntArray:
newTag = new NbtIntArray();
break;
default:
// should never happen, since ListType is checked beforehand
throw new NbtFormatException("Unsupported tag type found in a list: " + ListType);
}
newTag.Parent = this;
if (newTag.ReadTag(readStream))
{
tags.Add(newTag);
}
}
return(true);
}
internal override bool ReadTag(NbtBinaryReader readStream)
{
if (Parent != null && readStream.Selector != null && !readStream.Selector(this))
{
SkipTag(readStream);
return(false);
}
while (true)
{
NbtTagType nextTag = readStream.ReadTagType();
NbtTag newTag;
switch (nextTag)
{
case NbtTagType.End:
return(true);
case NbtTagType.Byte:
newTag = new NbtByte();
break;
case NbtTagType.Short:
newTag = new NbtShort();
break;
case NbtTagType.Int:
newTag = new NbtInt();
break;
case NbtTagType.Long:
newTag = new NbtLong();
break;
case NbtTagType.Float:
newTag = new NbtFloat();
break;
case NbtTagType.Double:
newTag = new NbtDouble();
break;
case NbtTagType.ByteArray:
newTag = new NbtByteArray();
break;
case NbtTagType.String:
newTag = new NbtString();
break;
case NbtTagType.List:
newTag = new NbtList();
break;
case NbtTagType.Compound:
newTag = new NbtCompound();
break;
case NbtTagType.IntArray:
newTag = new NbtIntArray();
break;
default:
throw new NbtFormatException("Unsupported tag type found in NBT_Compound: " + nextTag);
}
newTag.Parent = this;
newTag.Name = readStream.ReadString();
if (newTag.ReadTag(readStream))
{
// ReSharper disable AssignNullToNotNullAttribute
// newTag.Name is never null
tags.Add(newTag.Name, newTag);
// ReSharper restore AssignNullToNotNullAttribute
}
}
}
/// <summary> Reads the entirety of the current tag, including any descendants,
/// and constructs an NbtTag object of the appropriate type. </summary>
/// <returns> Constructed NbtTag object;
/// <c>null</c> if <c>SkipEndTags</c> is <c>true</c> and trying to read an End tag. </returns>
/// <exception cref="NbtFormatException"> If an error occured while parsing data in NBT format. </exception>
/// <exception cref="InvalidReaderStateException"> If NbtReader cannot recover from a previous parsing error. </exception>
/// <exception cref="EndOfStreamException"> End of stream has been reached (no more tags can be read). </exception>
/// <exception cref="InvalidOperationException"> Tag value has already been read, and CacheTagValues is false. </exception>
public NbtTag ReadAsTag()
{
switch (state)
{
case NbtParseState.Error:
throw new InvalidReaderStateException(ErroneousStateError);
case NbtParseState.AtStreamEnd:
throw new EndOfStreamException();
case NbtParseState.AtStreamBeginning:
case NbtParseState.AtCompoundEnd:
ReadToFollowing();
break;
}
NbtTag parent;
if (TagType == NbtTagType.Compound)
{
parent = new NbtCompound(TagName);
}
else if (TagType == NbtTagType.List)
{
parent = new NbtList(TagName, ListType);
}
else if (atValue)
{
NbtTag result = ReadValueAsTag();
ReadToFollowing();
return(result);
}
else
{
throw new InvalidOperationException(NoValueToReadError);
}
int startingDepth = Depth;
int lastDepth = Depth;
do
{
bool end = !ReadToFollowing();
if (end || Depth < lastDepth)
{
// Going up the file tree, or end of document: wrap up
while (Depth <= lastDepth && parent.Parent != null)
{
parent = parent.Parent;
lastDepth--;
}
}
if (end || Depth <= startingDepth)
{
break;
}
NbtTag thisTag;
if (TagType == NbtTagType.Compound)
{
thisTag = new NbtCompound(TagName);
AddToParent(thisTag, parent);
parent = thisTag;
}
else if (TagType == NbtTagType.List)
{
thisTag = new NbtList(TagName, ListType);
AddToParent(thisTag, parent);
parent = thisTag;
}
else
{
thisTag = ReadValueAsTag();
AddToParent(thisTag, parent);
}
lastDepth = Depth;
} while(true);
return(parent);
}