private static NbtDocument Parse(
ReadOnlyMemory <byte> data,
NbtOptions options,
byte[]?extraRentedBytes,
out int bytesConsumed)
{
ReadOnlySpan <byte> dataSpan = data.Span;
var database = new MetadataDb(data.Length);
var stack = new ByteStack <ContainerFrame>(NbtOptions.DefaultMaxDepth, clearOnReturn: false);
var readerState = new NbtReaderState(options);
var reader = new NbtReader(dataSpan, isFinalBlock: true, readerState);
try
{
Parse(ref reader, ref database, ref stack);
bytesConsumed = (int)reader.BytesConsumed;
}
catch
{
database.Dispose();
throw;
}
finally
{
readerState.Dispose();
stack.Dispose();
}
return(new NbtDocument(data, options, database, extraRentedBytes, isDisposable: true));
}
private static NbtDocument Parse(
ReadOnlyMemory <byte> data,
NbtOptions?options,
byte[]?extraRentedBytes,
ArrayPool <byte>?pool,
out int bytesConsumed)
{
pool ??= ArrayPool <byte> .Shared;
NbtOptions nbtOptions = options ?? NbtOptions.JavaDefault;
ReadOnlySpan <byte> dataSpan = data.Span;
MetadataDb database = new(pool, data.Length);
ByteStack <NbtReader.ContainerFrame> readerStack;
unsafe
{
NbtReader.ContainerFrame * stackBuffer = stackalloc NbtReader.ContainerFrame[NbtOptions.DefaultMaxDepth];
Span <NbtReader.ContainerFrame> stackSpan = new(stackBuffer, NbtOptions.DefaultMaxDepth);
readerStack = new(stackSpan, clearOnReturn : false);
}
NbtReaderState readerState = new(readerStack, nbtOptions);
NbtReader reader = new(dataSpan, isFinalBlock : true, readerState);
ByteStack <ContainerFrame> docStack;
unsafe
{
ContainerFrame * stackBuffer = stackalloc ContainerFrame[NbtOptions.DefaultMaxDepth];
Span <ContainerFrame> stackSpan = new(stackBuffer, NbtOptions.DefaultMaxDepth);
docStack = new(stackSpan, clearOnReturn : false);
}
try
{
Parse(ref reader, ref database, ref docStack);
bytesConsumed = (int)reader.BytesConsumed;
}
catch
{
database.Dispose();
throw;
}
finally
{
readerState.Dispose();
readerStack.Dispose();
docStack.Dispose();
}
return(new NbtDocument(data, nbtOptions, database, extraRentedBytes, pool));
}
public NbtReaderState(ByteStack <ContainerFrame> stack, NbtOptions?options = null) : this()
{
Options = options ?? NbtOptions.JavaDefault;
_containerInfoStack = stack;
}
public NbtReaderState(NbtOptions?options = null) : this()
{
Options = options ?? NbtOptions.JavaDefault;
_containerInfoStack = new ByteStack <ContainerFrame>(NbtOptions.DefaultMaxDepth, clearOnReturn: false);
}