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This commit is contained in:
Michael Goulet
2023-12-26 02:02:01 +00:00
parent eebb2abe0b
commit b91a98ba10
2 changed files with 10 additions and 13 deletions
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21
compiler/rustc_pattern_analysis/src/usefulness.rs
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@@ -821,7 +821,6 @@ impl fmt::Display for ValidityConstraint {
/// Represents a pattern-tuple under investigation.
// The three lifetimes are:
// - 'a allocated by us
// - 'p coming from the input
// - Cx global compilation context
#[derive(derivative::Derivative)]
@@ -835,7 +834,7 @@ struct PatStack<'p, Cx: TypeCx> {
relevant: bool,
}
impl<'a, 'p, Cx: TypeCx> PatStack<'p, Cx> {
impl<'p, Cx: TypeCx> PatStack<'p, Cx> {
fn from_pattern(pat: &'p DeconstructedPat<'p, Cx>) -> Self {
PatStack { pats: smallvec![pat], relevant: true }
}
@@ -870,7 +869,7 @@ impl<'a, 'p, Cx: TypeCx> PatStack<'p, Cx> {
/// Only call if `ctor.is_covered_by(self.head().ctor())` is true.
fn pop_head_constructor(
&self,
pcx: &PlaceCtxt<'a, 'p, Cx>,
pcx: &PlaceCtxt<'_, 'p, Cx>,
ctor: &Constructor<Cx>,
ctor_is_relevant: bool,
) -> PatStack<'p, Cx> {
@@ -914,7 +913,7 @@ struct MatrixRow<'p, Cx: TypeCx> {
useful: bool,
}
impl<'a, 'p, Cx: TypeCx> MatrixRow<'p, Cx> {
impl<'p, Cx: TypeCx> MatrixRow<'p, Cx> {
fn is_empty(&self) -> bool {
self.pats.is_empty()
}
@@ -946,7 +945,7 @@ impl<'a, 'p, Cx: TypeCx> MatrixRow<'p, Cx> {
/// Only call if `ctor.is_covered_by(self.head().ctor())` is true.
fn pop_head_constructor(
&self,
pcx: &PlaceCtxt<'a, 'p, Cx>,
pcx: &PlaceCtxt<'_, 'p, Cx>,
ctor: &Constructor<Cx>,
ctor_is_relevant: bool,
parent_row: usize,
@@ -989,7 +988,7 @@ struct Matrix<'p, Cx: TypeCx> {
place_validity: SmallVec<[ValidityConstraint; 2]>,
}
impl<'a, 'p, Cx: TypeCx> Matrix<'p, Cx> {
impl<'p, Cx: TypeCx> Matrix<'p, Cx> {
/// Pushes a new row to the matrix. If the row starts with an or-pattern, this recursively
/// expands it. Internal method, prefer [`Matrix::new`].
fn expand_and_push(&mut self, row: MatrixRow<'p, Cx>) {
@@ -1006,7 +1005,7 @@ impl<'a, 'p, Cx: TypeCx> Matrix<'p, Cx> {
/// Build a new matrix from an iterator of `MatchArm`s.
fn new(
wildcard_arena: &'p TypedArena<DeconstructedPat<'p, Cx>>,
arms: &'a [MatchArm<'p, Cx>],
arms: &[MatchArm<'p, Cx>],
scrut_ty: Cx::Ty,
scrut_validity: ValidityConstraint,
) -> Self {
@@ -1029,7 +1028,7 @@ impl<'a, 'p, Cx: TypeCx> Matrix<'p, Cx> {
matrix
}
fn head_ty(&self, mcx: MatchCtxt<'a, 'p, Cx>) -> Option<Cx::Ty> {
fn head_ty(&self, mcx: MatchCtxt<'_, 'p, Cx>) -> Option<Cx::Ty> {
if self.column_count() == 0 {
return None;
}
@@ -1056,16 +1055,14 @@ impl<'a, 'p, Cx: TypeCx> Matrix<'p, Cx> {
}
/// Iterate over the first pattern of each row.
fn heads<'b>(
&'b self,
) -> impl Iterator<Item = &'b DeconstructedPat<'p, Cx>> + Clone + Captures<'a> {
fn heads<'b>(&'b self) -> impl Iterator<Item = &'b DeconstructedPat<'p, Cx>> + Clone {
self.rows().map(|r| r.head())
}
/// This computes `specialize(ctor, self)`. See top of the file for explanations.
fn specialize_constructor(
&self,
pcx: &PlaceCtxt<'a, 'p, Cx>,
pcx: &PlaceCtxt<'_, 'p, Cx>,
ctor: &Constructor<Cx>,
ctor_is_relevant: bool,
) -> Matrix<'p, Cx> {