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some clippy::perf fixes

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This commit is contained in:
Matthias Krüger 2021-10-07 22:31:33 +02:00
parent 0157cc977f
commit ff6601e0fc
3 changed files with 3 additions and 3 deletions
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2
compiler/rustc_parse/src/parser/expr.rs
View File

@ -1096,7 +1096,7 @@ impl<'a> Parser<'a> {
(Err(ref mut err), Some((mut snapshot, ExprKind::Path(None, path)))) => {
let name = pprust::path_to_string(&path);
snapshot.bump(); // `(`
match snapshot.parse_struct_fields(path.clone(), false, token::Paren) {
match snapshot.parse_struct_fields(path, false, token::Paren) {
Ok((fields, ..)) if snapshot.eat(&token::CloseDelim(token::Paren)) => {
// We have are certain we have `Enum::Foo(a: 3, b: 4)`, suggest
// `Enum::Foo { a: 3, b: 4 }` or `Enum::Foo(3, 4)`.

2
compiler/rustc_typeck/src/check/cast.rs
View File

@ -431,7 +431,7 @@ impl<'a, 'tcx> CastCheck<'tcx> {
.sess
.source_map()
.span_to_snippet(self.expr.span)
.map_or(false, |snip| snip.starts_with("("));
.map_or(false, |snip| snip.starts_with('('));
// Very crude check to see whether the expression must be wrapped
// in parentheses for the suggestion to work (issue #89497).

2
compiler/rustc_typeck/src/check/expr.rs
View File

@ -1887,7 +1887,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
};
let expr_snippet =
self.tcx.sess.source_map().span_to_snippet(expr.span).unwrap_or(String::new());
let is_wrapped = expr_snippet.starts_with("(") && expr_snippet.ends_with(")");
let is_wrapped = expr_snippet.starts_with('(') && expr_snippet.ends_with(')');
let after_open = expr.span.lo() + rustc_span::BytePos(1);
let before_close = expr.span.hi() - rustc_span::BytePos(1);