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Implement .use keyword as an alias of clone

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Santiago Pastorino 2024-10-02 16:35:37 -03:00
parent 0cf8dbc96c
commit 05c516446a
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36 changed files with 247 additions and 24 deletions
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8
compiler/rustc_hir/src/hir.rs
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@ -2166,6 +2166,7 @@ impl Expr<'_> {
| ExprKind::Tup(_)
| ExprKind::Type(..)
| ExprKind::UnsafeBinderCast(..)
| ExprKind::Use(..)
| ExprKind::Err(_) => ExprPrecedence::Unambiguous,
ExprKind::DropTemps(expr, ..) => expr.precedence(),
@ -2212,6 +2213,7 @@ impl Expr<'_> {
ExprKind::Path(QPath::TypeRelative(..))
| ExprKind::Call(..)
| ExprKind::MethodCall(..)
| ExprKind::Use(..)
| ExprKind::Struct(..)
| ExprKind::Tup(..)
| ExprKind::If(..)
@ -2285,7 +2287,9 @@ impl Expr<'_> {
pub fn can_have_side_effects(&self) -> bool {
match self.peel_drop_temps().kind {
ExprKind::Path(_) | ExprKind::Lit(_) | ExprKind::OffsetOf(..) => false,
ExprKind::Path(_) | ExprKind::Lit(_) | ExprKind::OffsetOf(..) | ExprKind::Use(..) => {
false
}
ExprKind::Type(base, _)
| ExprKind::Unary(_, base)
| ExprKind::Field(base, _)
@ -2547,6 +2551,8 @@ pub enum ExprKind<'hir> {
///
/// [`type_dependent_def_id`]: ../../rustc_middle/ty/struct.TypeckResults.html#method.type_dependent_def_id
MethodCall(&'hir PathSegment<'hir>, &'hir Expr<'hir>, &'hir [Expr<'hir>], Span),
/// An use expression (e.g., `var.use`).
Use(&'hir Expr<'hir>, Span),
/// A tuple (e.g., `(a, b, c, d)`).
Tup(&'hir [Expr<'hir>]),
/// A binary operation (e.g., `a + b`, `a * b`).