Enum git_traverse::tree::visit::Action

pub enum Action {
    Continue,
    Cancel,
    Skip,
}

What to do after an entry was recorded.

Variants

Continue

Continue the traversal of entries.

Cancel

Stop the traversal of entries, making this te last call to visit_(tree|nontree)(…).

Skip

Don’t dive into the entry, skipping children effectively. Only useful in visit_tree(…).

Implementations

impl Action

pub fn cancelled(&self) -> bool

Returns true if this action means to stop the traversal.

Examples found in repository

src/tree/breadthfirst.rs (line 88)

    pub fn traverse<StateMut, Find, V>(
        root: TreeRefIter<'_>,
        mut state: StateMut,
        mut find: Find,
        delegate: &mut V,
    ) -> Result<(), Error>
    where
        Find: for<'a> FnMut(&oid, &'a mut Vec<u8>) -> Option<TreeRefIter<'a>>,
        StateMut: BorrowMut<State>,
        V: Visit,
    {
        let state = state.borrow_mut();
        state.clear();
        let mut tree = root;
        loop {
            for entry in tree {
                let entry = entry?;
                match entry.mode {
                    EntryMode::Tree => {
                        use crate::tree::visit::Action::*;
                        delegate.push_path_component(entry.filename);
                        let action = delegate.visit_tree(&entry);
                        match action {
                            Skip => {}
                            Continue => {
                                delegate.pop_path_component();
                                delegate.push_back_tracked_path_component(entry.filename);
                                state.next.push_back(entry.oid.to_owned())
                            }
                            Cancel => {
                                return Err(Error::Cancelled);
                            }
                        }
                    }
                    _non_tree => {
                        delegate.push_path_component(entry.filename);
                        if delegate.visit_nontree(&entry).cancelled() {
                            return Err(Error::Cancelled);
                        }
                    }
                }
                delegate.pop_path_component();
            }
            match state.next.pop_front() {
                Some(oid) => {
                    delegate.pop_front_tracked_path_and_set_current();
                    match find(&oid, &mut state.buf) {
                        Some(tree_iter) => tree = tree_iter,
                        None => return Err(Error::NotFound { oid: oid.to_owned() }),
                    }
                }
                None => break Ok(()),
            }
        }
    }

Trait Implementations

impl Clone for Action

fn clone(&self) -> Action

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Hash for Action

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 Ord for Action

fn cmp(&self, other: &Action) -> 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 PartialEq<Action> for Action

fn eq(&self, other: &Action) -> 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 PartialOrd<Action> for Action

fn partial_cmp(&self, other: &Action) -> 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 Copy for Action

impl Eq for Action

impl StructuralEq for Action

impl StructuralPartialEq for Action