use rustc_hir::{BorrowKind, Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
declare_clippy_lint! {
/// **What it does:** Checks for usage of `write!()` / `writeln()!` which can be
declare_lint_pass!(ExplicitWrite => [EXPLICIT_WRITE]);
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for ExplicitWrite {
- fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr<'_>) {
+impl<'tcx> LateLintPass<'tcx> for ExplicitWrite {
+ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
if_chain! {
// match call to unwrap
if let ExprKind::MethodCall(ref unwrap_fun, _, ref unwrap_args, _) = expr.kind;
- if unwrap_fun.ident.name == sym!(unwrap);
+ if unwrap_fun.ident.name == sym::unwrap;
// match call to write_fmt
if !unwrap_args.is_empty();
if let ExprKind::MethodCall(ref write_fun, _, write_args, _) =