clippy_lints/src/methods/inspect_for_each.rs

   1 use rustc_hir as hir;
   2 use rustc_lint::LateContext;
   3 use rustc_span::source_map::Span;
   4
   5 use crate::utils::{match_trait_method, paths, span_lint_and_help};
   6
   7 use super::INSPECT_FOR_EACH;
   8
   9 /// lint use of `inspect().for_each()` for `Iterators`
  10 pub(super) fn lint<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, inspect_span: Span) {
  11     if match_trait_method(cx, expr, &paths::ITERATOR) {
  12         let msg = "called `inspect(..).for_each(..)` on an `Iterator`";
  13         let hint = "move the code from `inspect(..)` to `for_each(..)` and remove the `inspect(..)`";
  14         span_lint_and_help(
  15             cx,
  16             INSPECT_FOR_EACH,
  17             inspect_span.with_hi(expr.span.hi()),
  18             msg,
  19             None,
  20             hint,
  21         );
  22     }
  23 }