use rustc_span::source_map::Spanned;
declare_clippy_lint! {
- /// **What it does:** Finds occurrences of `Vec::resize(0, an_int)`
+ /// ### What it does
+ /// Finds occurrences of `Vec::resize(0, an_int)`
///
- /// **Why is this bad?** This is probably an argument inversion mistake.
+ /// ### Why is this bad?
+ /// This is probably an argument inversion mistake.
///
- /// **Known problems:** None.
- ///
- /// **Example:**
+ /// ### Example
/// ```rust
/// vec!(1, 2, 3, 4, 5).resize(0, 5)
/// ```
impl<'tcx> LateLintPass<'tcx> for VecResizeToZero {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
if_chain! {
- if let hir::ExprKind::MethodCall(path_segment, _, ref args, _) = expr.kind;
+ if let hir::ExprKind::MethodCall(path_segment, _, args, _) = expr.kind;
if let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id);
if match_def_path(cx, method_def_id, &paths::VEC_RESIZE) && args.len() == 3;
if let ExprKind::Lit(Spanned { node: LitKind::Int(0, _), .. }) = args[1].kind;