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More uses of the matches! macro

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This commit is contained in:
LingMan 2020-12-29 01:20:06 +01:00
parent 2987785df3
commit 7a41532ef9
2 changed files with 9 additions and 16 deletions
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11
compiler/rustc_ast_lowering/src/lib.rs
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@ -1806,12 +1806,11 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
output,
c_variadic,
implicit_self: decl.inputs.get(0).map_or(hir::ImplicitSelfKind::None, |arg| {
let is_mutable_pat = match arg.pat.kind {
PatKind::Ident(BindingMode::ByValue(mt) | BindingMode::ByRef(mt), _, _) => {
mt == Mutability::Mut
}
_ => false,
};
use BindingMode::{ByRef, ByValue};
let is_mutable_pat = matches!(
arg.pat.kind,
PatKind::Ident(ByValue(Mutability::Mut) | ByRef(Mutability::Mut), ..)
);
match arg.ty.kind {
TyKind::ImplicitSelf if is_mutable_pat => hir::ImplicitSelfKind::Mut,