Enum git_ref::Category

pub enum Category<'a> {
    Tag,
    LocalBranch,
    RemoteBranch,
    Note,
    PseudoRef,
    MainPseudoRef,
    MainRef,
    LinkedPseudoRef {
        name: &'a BStr,
    },
    LinkedRef {
        name: &'a BStr,
    },
    Bisect,
    Rewritten,
    WorktreePrivate,
}

The various known categories of references.

This translates into a prefix containing all references of a given category.

Variants

Tag

A tag in refs/tags

LocalBranch

A branch in refs/heads

RemoteBranch

A branch in refs/remotes

Note

A tag in refs/notes

PseudoRef

Something outside of ref/ in the current worktree, typically HEAD.

MainPseudoRef

A PseudoRef, but referenced so that it will always refer to the main worktree by prefixing it with main-worktree/.

MainRef

Any reference that is prefixed with main-worktree/refs/

LinkedPseudoRef

Fields

name: &'a BStr

The name of the worktree.

A PseudoRef in another linked worktree, never in the main one, like worktrees/<id>/HEAD.

LinkedRef

Fields

name: &'a BStr

The name of the worktree.

Any reference that is prefixed with worktrees/<id>/refs/.

Bisect

A ref that is private to each worktree (linked or main), with refs/bisect/ prefix

Rewritten

A ref that is private to each worktree (linked or main), with refs/rewritten/ prefix

WorktreePrivate

A ref that is private to each worktree (linked or main), with refs/worktree/ prefix

Implementations

impl<'a> Category<'a>

pub fn prefix(&self) -> &BStr

Return the prefix that would contain all references of our kind, or an empty string if the reference would be directly inside of the git_dir().

Examples found in repository

src/name.rs (line 68)

    pub(crate) fn looks_like_full_name(&self) -> bool {
        let name = self.0.as_bstr();
        name.starts_with_str("refs/")
            || name.starts_with(Category::MainPseudoRef.prefix())
            || name.starts_with(Category::LinkedPseudoRef { name: "".into() }.prefix())
            || is_pseudo_ref(name)
    }

src/fullname.rs (line 109)

    pub fn category_and_short_name(&self) -> Option<(Category<'_>, &BStr)> {
        let name = self.0.as_bstr();
        for category in &[Category::Tag, Category::LocalBranch, Category::RemoteBranch] {
            if let Some(shortened) = name.strip_prefix(category.prefix().as_ref()) {
                return Some((*category, shortened.as_bstr()));
            }
        }

        for category in &[
            Category::Note,
            Category::Bisect,
            Category::WorktreePrivate,
            Category::Rewritten,
        ] {
            if name.starts_with(category.prefix().as_ref()) {
                return Some((
                    *category,
                    name.strip_prefix(b"refs/")
                        .expect("we checked for refs/* above")
                        .as_bstr(),
                ));
            }
        }

        if is_pseudo_ref(name) {
            Some((Category::PseudoRef, name))
        } else if let Some(shortened) = name.strip_prefix(Category::MainPseudoRef.prefix().as_ref()) {
            if shortened.starts_with_str("refs/") {
                (Category::MainRef, shortened.as_bstr()).into()
            } else {
                is_pseudo_ref(shortened).then(|| (Category::MainPseudoRef, shortened.as_bstr()))
            }
        } else if let Some(shortened_with_worktree_name) =
            name.strip_prefix(Category::LinkedPseudoRef { name: "".into() }.prefix().as_ref())
        {
            let (name, shortened) = shortened_with_worktree_name.find_byte(b'/').map(|pos| {
                (
                    shortened_with_worktree_name[..pos].as_bstr(),
                    shortened_with_worktree_name[pos + 1..].as_bstr(),
                )
            })?;
            if shortened.starts_with_str("refs/") {
                (Category::LinkedRef { name }, shortened.as_bstr()).into()
            } else {
                is_pseudo_ref(shortened).then(|| (Category::LinkedPseudoRef { name }, shortened.as_bstr()))
            }
        } else {
            None
        }
    }

pub fn is_worktree_private(&self) -> bool

Returns true if the category is private to their worktrees, and never shared with other worktrees.

Examples found in repository

src/store/file/overlay_iter.rs (line 121)

        fn advance_to_non_private(iter: &mut Peekable<SortedLoosePaths>) {
            while let Some(Ok((_path, name))) = iter.peek() {
                if name.category().map_or(true, |cat| cat.is_worktree_private()) {
                    iter.next();
                } else {
                    break;
                }
            }
        }

src/store/file/transaction/prepare.rs (line 419)

fn possibly_adjust_name_for_prefixes(name: &FullNameRef) -> Option<FullName> {
    match name.category_and_short_name() {
        Some((c, sn)) => {
            use crate::Category::*;
            let sn = FullNameRef::new_unchecked(sn);
            match c {
                Bisect | Rewritten | WorktreePrivate | LinkedPseudoRef { .. } | PseudoRef | MainPseudoRef => None,
                Tag | LocalBranch | RemoteBranch | Note => name.into(),
                MainRef | LinkedRef { .. } => sn
                    .category()
                    .map_or(false, |cat| !cat.is_worktree_private())
                    .then(|| sn),
            }
            .map(|n| n.to_owned())
        }
        None => Some(name.to_owned()), // allow (uncategorized/very special) refs to be packed
    }
}

src/store/file/find.rs (line 180)

    pub(crate) fn to_base_dir_and_relative_name<'a>(
        &self,
        name: &'a FullNameRef,
        is_reflog: bool,
    ) -> (Cow<'_, Path>, &'a FullNameRef) {
        let commondir = self.common_dir_resolved();
        let linked_git_dir =
            |worktree_name: &BStr| commondir.join("worktrees").join(git_path::from_bstr(worktree_name));
        name.category_and_short_name()
            .and_then(|(c, sn)| {
                use crate::Category::*;
                let sn = FullNameRef::new_unchecked(sn);
                Some(match c {
                    LinkedPseudoRef { name: worktree_name } => is_reflog
                        .then(|| (linked_git_dir(worktree_name).into(), sn))
                        .unwrap_or((commondir.into(), name)),
                    Tag | LocalBranch | RemoteBranch | Note => (commondir.into(), name),
                    MainRef | MainPseudoRef => (commondir.into(), sn),
                    LinkedRef { name: worktree_name } => sn
                        .category()
                        .map_or(false, |cat| cat.is_worktree_private())
                        .then(|| {
                            if is_reflog {
                                (linked_git_dir(worktree_name).into(), sn)
                            } else {
                                (commondir.into(), name)
                            }
                        })
                        .unwrap_or((commondir.into(), sn)),
                    PseudoRef | Bisect | Rewritten | WorktreePrivate => return None,
                })
            })
            .unwrap_or((self.git_dir.as_path().into(), name))
    }

Trait Implementations

impl<'a> Clone for Category<'a>

fn clone(&self) -> Category<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Category<'a>

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

Formats the value using the given formatter.

impl<'a> Hash for Category<'a>

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

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<'a> Ord for Category<'a>

fn cmp(&self, other: &Category<'a>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<'a> PartialEq<Category<'a>> for Category<'a>

fn eq(&self, other: &Category<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<'a> PartialOrd<Category<'a>> for Category<'a>

fn partial_cmp(&self, other: &Category<'a>) -> Option<Ordering>

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl<'a> Copy for Category<'a>

impl<'a> Eq for Category<'a>

impl<'a> StructuralEq for Category<'a>

impl<'a> StructuralPartialEq for Category<'a>