Struct Group 

pub struct Group(pub usize);

An integer that separates distinct groups of Ids.

This can be seen as a way to pre-allocate consecutive integers for one group to make segments less fragmented.

(Group, Id) are also topologically sorted.

Tuple Fields

0: usize

Implementations

impl Group

pub const MASTER: Group

The “master” group. usually ancestors(master).

• Expected to have most of the commits in a repo.
• Ideally free from fragmentation. In other words, ancestors(master) can be represented in a single Span.
• Ideally has limited heads. Does not scale with too many heads.
• Vertexs (commit hashes) might be lazy.

pub const NON_MASTER: Group

The “non-master” group.

• Concrete vertexes not in the “master” group. For example, public release branches, local feature branches.
• Expected to have multiple heads. In other words, is fragmented.
• Expected to be sparse referred. For example, the “visible heads” will refer to a bounded subset in this group.
• Expected to be non-lazy. Code paths assume Vertexs (commit hashes) are known in this group.

pub const VIRTUAL: Group

The “virtual” group.

• Typically, “null” and “wdir()”.
• Should not be written to disk.
• Not lazy.

pub const PERSIST: [Group; 2]

Groups designed to be persisted to disk.

pub const ALL: [Group; 3]

pub const MAX: Group

pub const COUNT: usize

pub const BITS: u32 = 8

pub const BYTES: usize = 1

pub const fn min_id(self) -> Id

The first Id in this group.

pub const fn max_id(self) -> Id

The maximum Id in this group.

pub const fn bytes(self) -> [u8; 1]

Convert to array.

pub fn hex_bytes(self) -> [u8; 2]

Convert to hex array.

pub fn is_valid(self) -> bool

Test if the Group is valid.

Trait Implementations

impl Add<u8> for Group

type Output = Group

The resulting type after applying the + operator.

fn add(self, other: u8) -> Group

Performs the + operation.

impl Clone for Group

fn clone(&self) -> Group

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Group

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Group

fn deserialize<__D>( __deserializer: __D, ) -> Result<Group, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Group

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Hash for Group

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Group

fn cmp(&self, other: &Group) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Group

fn eq(&self, other: &Group) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Group

fn partial_cmp(&self, other: &Group) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Group

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Sub<u8> for Group

type Output = Group

The resulting type after applying the - operator.

fn sub(self, other: u8) -> Group

Performs the - operation.

impl Copy for Group

impl Eq for Group

impl StructuralPartialEq for Group