use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
impl EarlyLintPass for DoubleParens {
fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) {
impl EarlyLintPass for DoubleParens {
fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) {