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	# Node IDs are null-padded if shorter than 32 bytes.			# Node IDs are null-padded if shorter than 32 bytes.
	# A data file shorter than the specified used size is corrupted (truncated)			# A data file shorter than the specified used size is corrupted (truncated)
	HEADER = struct.Struct(			HEADER = struct.Struct(
	">{}s32s32sL{}sB".format(len(V2_FORMAT_MARKER), TREE_METADATA_SIZE)			">{}s32s32sL{}sB".format(len(V2_FORMAT_MARKER), TREE_METADATA_SIZE)
	)			)


	class DirstateDocket(object):			class DirstateDocket(object):
	data_filename_pattern = b'dirstate.%s.d'			data_filename_pattern = b'dirstate.%s'

	def __init__(self, parents, data_size, tree_metadata, uuid):			def __init__(self, parents, data_size, tree_metadata, uuid):
	self.parents = parents			self.parents = parents
	self.data_size = data_size			self.data_size = data_size
	self.tree_metadata = tree_metadata			self.tree_metadata = tree_metadata
	self.uuid = uuid			self.uuid = uuid

	@classmethod			@classmethod

rust/hg-core/src/dirstate_tree/on_disk.rs

	}			}

	pub fn data_size(&self) -> usize {			pub fn data_size(&self) -> usize {
	// This `unwrap` could only panic on a 16-bit CPU			// This `unwrap` could only panic on a 16-bit CPU
	self.header.data_size.get().try_into().unwrap()			self.header.data_size.get().try_into().unwrap()
	}			}

	pub fn data_filename(&self) -> String {			pub fn data_filename(&self) -> String {
	String::from_utf8(format_bytes!(b"dirstate.{}.d", self.uuid)).unwrap()			String::from_utf8(format_bytes!(b"dirstate.{}", self.uuid)).unwrap()
	}			}
	}			}

	pub fn read_docket(			pub fn read_docket(
	on_disk: &[u8],			on_disk: &[u8],
	) -> Result<Docket<'_>, DirstateV2ParseError> {			) -> Result<Docket<'_>, DirstateV2ParseError> {
	let (header, uuid) =			let (header, uuid) =
	DocketHeader::from_bytes(on_disk).map_err(\|_\| DirstateV2ParseError)?;			DocketHeader::from_bytes(on_disk).map_err(\|_\| DirstateV2ParseError)?;