use rustc::hir::*;
-use rustc::lint::*;
-use rustc::ty::TypeVariants;
+use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_tool_lint, lint_array};
+use if_chain::if_chain;
+use rustc::ty::TyKind;
use crate::utils::{any_parent_is_automatically_derived, match_def_path, opt_def_id, paths, span_lint_and_sugg};
then {
match qpath {
QPath::Resolved(..) => {
+ if_chain! {
+ // Detect and ignore <Foo as Default>::default() because these calls do
+ // explicitly name the type.
+ if let ExprKind::Call(ref method, ref _args) = expr.node;
+ if let ExprKind::Path(ref p) = method.node;
+ if let QPath::Resolved(Some(_ty), _path) = p;
+ then {
+ return;
+ }
+ }
+
// TODO: Work out a way to put "whatever the imported way of referencing
// this type in this file" rather than a fully-qualified type.
let expr_ty = cx.tables.expr_ty(expr);
- if let TypeVariants::TyAdt(..) = expr_ty.sty {
+ if let TyKind::Adt(..) = expr_ty.sty {
let replacement = format!("{}::default()", expr_ty);
span_lint_and_sugg(
cx,