Enum Containment 

pub enum Containment {
    Contains,
    DoesNotContain,
    CommitUnknown,
}

Whether one commit contains another: three answers, because “no” and “this clone cannot say” send a reader to different places.

Evidence recorded on a commit the presented revision does not contain is evidence about some other history, however empty a diff between the two happens to be. And a commit this clone does not have — a rewritten branch, a shallow fetch, a typo — is neither a yes nor a no, so it is not collapsed into either.

This is the one definition. PR #600 carries a private copy in delivery::revision, with the same variants and meaning; it imports this one and deletes its copy.

use majordomus_cli::git::Containment;

// only one of the three answers is a yes
let answers = [
    Containment::Contains,
    Containment::DoesNotContain,
    Containment::CommitUnknown,
];
assert_eq!(answers.iter().filter(|a| **a == Containment::Contains).count(), 1);
assert_ne!(Containment::DoesNotContain, Containment::CommitUnknown);

Variants

Contains

The ancestor is reachable from the descendant.

DoesNotContain

Both commits are known here, and the ancestor is not reachable from the descendant.

CommitUnknown

This clone does not have one of the two commits, or git could not be asked, so the question has no answer here.

Trait Implementations

impl Clone for Containment

fn clone(&self) -> Containment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Containment

impl Debug for Containment

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

Formats the value using the given formatter.

impl Eq for Containment

impl PartialEq for Containment

fn eq(&self, other: &Containment) -> 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 StructuralPartialEq for Containment