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Move the custom equality up to SourceId

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That way we:

* preserve that SourceIds that have slightly different URLs are actually equal
* make SourceIdInner lawful in its Hash/Eq definition.
This commit is contained in:
Dale Wijnand 2018-11-25 12:14:56 +00:00
parent 3d91b79541
commit 653ce4d4c3
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1 changed files with 10 additions and 20 deletions
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30
src/cargo/core/source/source_id.rs
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@ -27,7 +27,7 @@ pub struct SourceId {
inner: &'static SourceIdInner,
}
#[derive(Eq, Clone, Debug, Hash)]
#[derive(PartialEq, Eq, Clone, Debug, Hash)]
struct SourceIdInner {
/// The source URL
url: Url,
@ -341,12 +341,6 @@ impl SourceId {
}
}
impl PartialEq for SourceId {
fn eq(&self, other: &SourceId) -> bool {
(*self.inner).eq(&*other.inner)
}
}
impl PartialOrd for SourceId {
fn partial_cmp(&self, other: &SourceId) -> Option<Ordering> {
Some(self.cmp(other))
@ -440,24 +434,20 @@ impl fmt::Display for SourceId {
}
}
// This custom implementation handles situations such as when two git sources
// point at *almost* the same URL, but not quite, even when they actually point
// to the same repository.
/// This method tests for self and other values to be equal, and is used by ==.
///
/// For git repositories, the canonical url is checked.
impl PartialEq for SourceIdInner {
fn eq(&self, other: &SourceIdInner) -> bool {
if self.kind != other.kind {
// Custom equality defined as canonical URL equality for git sources and
// URL equality for other sources, ignoring the `precise` and `name` fields.
impl PartialEq for SourceId {
fn eq(&self, other: &SourceId) -> bool {
if self.inner.kind != other.inner.kind {
return false;
}
if self.url == other.url {
if self.inner.url == other.inner.url {
return true;
}
match (&self.kind, &other.kind) {
(&Kind::Git(ref ref1), &Kind::Git(ref ref2)) => {
ref1 == ref2 && self.canonical_url == other.canonical_url
match (&self.inner.kind, &other.inner.kind) {
(Kind::Git(ref1), Kind::Git(ref2)) => {
ref1 == ref2 && self.inner.canonical_url == other.inner.canonical_url
}
_ => false,
}