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replace ref

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This commit is contained in:
csmoe 2018-06-01 19:00:15 +08:00 • committed by ashtneoi
parent 1662daa23d
commit af5edc32df
1 changed files with 9 additions and 4 deletions
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13
src/librustc_borrowck/borrowck/mod.rs
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@ -1209,11 +1209,16 @@ impl<'a, 'tcx> BorrowckCtxt<'a, 'tcx> {
let let_span = self.tcx.hir.span(node_id);
match self.local_binding_mode(node_id) {
ty::BindByReference(..) => {
let ref_span = self.tcx.sess.codemap().span_until_whitespace(let_span);
if let Ok(_) = self.tcx.sess.codemap().span_to_snippet(let_span) {
if let Ok(snippet) = self.tcx.sess.codemap().span_to_snippet(let_span) {
let replace_str = if snippet.starts_with("ref ") {
snippet.replacen("ref ", "ref mut ", 1)
} else {
snippet
};
db.span_label(
ref_span,
format!("consider changing this to `{}`", "ref mut"));
let_span,
format!("consider changing this to `{}`", replace_str)
);
};
}
ty::BindByValue(..) => {