src/tools/clippy/tests/ui-internal/unnecessary_def_path.fixed

   1 // run-rustfix
   2 // aux-build:paths.rs
   3 #![deny(clippy::internal)]
   4 #![feature(rustc_private)]
   5
   6 extern crate clippy_utils;
   7 extern crate paths;
   8 extern crate rustc_hir;
   9 extern crate rustc_lint;
  10 extern crate rustc_middle;
  11 extern crate rustc_span;
  12
  13 #[allow(unused)]
  14 use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item, match_type};
  15 #[allow(unused)]
  16 use clippy_utils::{
  17     is_expr_path_def_path, is_path_diagnostic_item, is_res_diagnostic_ctor, is_res_lang_ctor, is_trait_method,
  18     match_def_path, match_trait_method, path_res,
  19 };
  20
  21 #[allow(unused)]
  22 use rustc_hir::LangItem;
  23 #[allow(unused)]
  24 use rustc_span::sym;
  25
  26 use rustc_hir::def_id::DefId;
  27 use rustc_hir::Expr;
  28 use rustc_lint::LateContext;
  29 use rustc_middle::ty::Ty;
  30
  31 #[allow(unused, clippy::unnecessary_def_path)]
  32 static OPTION: [&str; 3] = ["core", "option", "Option"];
  33 #[allow(unused, clippy::unnecessary_def_path)]
  34 const RESULT: &[&str] = &["core", "result", "Result"];
  35
  36 fn _f<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, did: DefId, expr: &Expr<'_>) {
  37     let _ = is_type_diagnostic_item(cx, ty, sym::Option);
  38     let _ = is_type_diagnostic_item(cx, ty, sym::Result);
  39     let _ = is_type_diagnostic_item(cx, ty, sym::Result);
  40
  41     #[allow(unused, clippy::unnecessary_def_path)]
  42     let rc_path = &["alloc", "rc", "Rc"];
  43     let _ = is_type_diagnostic_item(cx, ty, sym::Rc);
  44
  45     let _ = is_type_diagnostic_item(cx, ty, sym::Option);
  46     let _ = is_type_diagnostic_item(cx, ty, sym::Result);
  47
  48     let _ = is_type_lang_item(cx, ty, LangItem::OwnedBox);
  49     let _ = is_type_diagnostic_item(cx, ty, sym::maybe_uninit_uninit);
  50
  51     let _ = cx.tcx.lang_items().get(LangItem::OwnedBox) == Some(did);
  52     let _ = cx.tcx.is_diagnostic_item(sym::Option, did);
  53     let _ = cx.tcx.lang_items().get(LangItem::OptionSome) == Some(did);
  54
  55     let _ = is_trait_method(cx, expr, sym::AsRef);
  56
  57     let _ = is_path_diagnostic_item(cx, expr, sym::Option);
  58     let _ = path_res(cx, expr).opt_def_id().map_or(false, |id| cx.tcx.lang_items().get(LangItem::IteratorNext) == Some(id));
  59     let _ = is_res_lang_ctor(cx, path_res(cx, expr), LangItem::OptionSome);
  60 }
  61
  62 fn main() {}