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Auto merge of #4358 - lzutao:cleanup_implicit_return, r=flip1995

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Use source_callsite() instead of recursive outer_expn_info()

changelog: none
This commit is contained in:
bors 2019-08-08 16:36:44 +00:00
commit d23e6b396a
1 changed files with 2 additions and 10 deletions
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12
clippy_lints/src/implicit_return.rs
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@ -46,8 +46,8 @@ static LINT_BREAK: &str = "change `break` to `return` as shown";
static LINT_RETURN: &str = "add `return` as shown";
fn lint(cx: &LateContext<'_, '_>, outer_span: Span, inner_span: Span, msg: &str) {
let outer_span = span_to_outer_expn(outer_span);
let inner_span = span_to_outer_expn(inner_span);
let outer_span = outer_span.source_callsite();
let inner_span = inner_span.source_callsite();
span_lint_and_then(cx, IMPLICIT_RETURN, outer_span, "missing return statement", |db| {
if let Some(snippet) = snippet_opt(cx, inner_span) {
@ -61,14 +61,6 @@ fn lint(cx: &LateContext<'_, '_>, outer_span: Span, inner_span: Span, msg: &str)
});
}
fn span_to_outer_expn(span: Span) -> Span {
if let Some(expr) = span.ctxt().outer_expn_info() {
span_to_outer_expn(expr.call_site)
} else {
span
}
}
fn expr_match(cx: &LateContext<'_, '_>, expr: &Expr) {
match &expr.node {
// loops could be using `break` instead of `return`