Auto merge of #7779 - rust-lang:test_module, r=flip1995

[rust.git] / clippy_utils / src / lib.rs

diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index 00cf8a4d077f615310d2aec672d1ab9d9f76f095..09eee78f0d1ffeb339cc1c11d6ff91dde1145281 100644 (file)
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -18,7 +18,6 @@
 extern crate rustc_ast;
 extern crate rustc_ast_pretty;
 extern crate rustc_attr;
-extern crate rustc_const_eval;
 extern crate rustc_data_structures;
 extern crate rustc_errors;
 extern crate rustc_hir;
@@ -252,11 +251,7 @@ pub fn is_lang_ctor(cx: &LateContext<'_>, qpath: &QPath<'_>, lang_item: LangItem
 /// Returns `true` if this `span` was expanded by any macro.
 #[must_use]
 pub fn in_macro(span: Span) -> bool {
-    if span.from_expansion() {
-        !matches!(span.ctxt().outer_expn_data().kind, ExpnKind::Desugaring(..))
-    } else {
-        false
-    }
+    span.from_expansion() && !matches!(span.ctxt().outer_expn_data().kind, ExpnKind::Desugaring(..))
 }
 
 pub fn is_unit_expr(expr: &Expr<'_>) -> bool {
@@ -647,13 +642,13 @@ pub fn can_mut_borrow_both(cx: &LateContext<'_>, e1: &Expr<'_>, e2: &Expr<'_>) -
 /// constructor from the std library
 fn is_default_equivalent_ctor(cx: &LateContext<'_>, def_id: DefId, path: &QPath<'_>) -> bool {
     let std_types_symbols = &[
-        sym::string_type,
-        sym::vec_type,
-        sym::vecdeque_type,
+        sym::String,
+        sym::Vec,
+        sym::VecDeque,
         sym::LinkedList,
-        sym::hashmap_type,
+        sym::HashMap,
         sym::BTreeMap,
-        sym::hashset_type,
+        sym::HashSet,
         sym::BTreeSet,
         sym::BinaryHeap,
     ];
@@ -1286,10 +1281,9 @@ pub fn is_integer_const(cx: &LateContext<'_>, e: &Expr<'_>, value: u128) -> bool
     }
     let enclosing_body = cx.tcx.hir().local_def_id(cx.tcx.hir().enclosing_body_owner(e.hir_id));
     if let Some((Constant::Int(v), _)) = constant(cx, cx.tcx.typeck(enclosing_body), e) {
-        value == v
-    } else {
-        false
+        return value == v;
     }
+    false
 }
 
 /// Checks whether the given expression is a constant literal of the given value.
@@ -1316,7 +1310,7 @@ pub fn is_adjusted(cx: &LateContext<'_>, e: &Expr<'_>) -> bool {
 
 /// Returns the pre-expansion span if is this comes from an expansion of the
 /// macro `name`.
-/// See also `is_direct_expn_of`.
+/// See also [`is_direct_expn_of`].
 #[must_use]
 pub fn is_expn_of(mut span: Span, name: &str) -> Option<Span> {
     loop {
@@ -1339,13 +1333,13 @@ pub fn is_expn_of(mut span: Span, name: &str) -> Option<Span> {
 
 /// Returns the pre-expansion span if the span directly comes from an expansion
 /// of the macro `name`.
-/// The difference with `is_expn_of` is that in
-/// ```rust,ignore
+/// The difference with [`is_expn_of`] is that in
+/// ```rust
+/// # macro_rules! foo { ($e:tt) => { $e } }; macro_rules! bar { ($e:expr) => { $e } }
 /// foo!(bar!(42));
 /// ```
 /// `42` is considered expanded from `foo!` and `bar!` by `is_expn_of` but only
-/// `bar!` by
-/// `is_direct_expn_of`.
+/// from `bar!` by `is_direct_expn_of`.
 #[must_use]
 pub fn is_direct_expn_of(span: Span, name: &str) -> Option<Span> {
     if span.from_expansion() {
@@ -1468,11 +1462,9 @@ pub fn is_self(slf: &Param<'_>) -> bool {
 }
 
 pub fn is_self_ty(slf: &hir::Ty<'_>) -> bool {
-    if_chain! {
-        if let TyKind::Path(QPath::Resolved(None, path)) = slf.kind;
-        if let Res::SelfTy(..) = path.res;
-        then {
-            return true
+    if let TyKind::Path(QPath::Resolved(None, path)) = slf.kind {
+        if let Res::SelfTy(..) = path.res {
+            return true;
         }
     }
     false
@@ -2064,15 +2056,12 @@ macro_rules! unwrap_cargo_metadata {
 }
 
 pub fn is_hir_ty_cfg_dependant(cx: &LateContext<'_>, ty: &hir::Ty<'_>) -> bool {
-    if_chain! {
-        if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind;
-        if let Res::Def(_, def_id) = path.res;
-        then {
-            cx.tcx.has_attr(def_id, sym::cfg) || cx.tcx.has_attr(def_id, sym::cfg_attr)
-        } else {
-            false
+    if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind {
+        if let Res::Def(_, def_id) = path.res {
+            return cx.tcx.has_attr(def_id, sym::cfg) || cx.tcx.has_attr(def_id, sym::cfg_attr);
         }
     }
+    false
 }
 
 /// Checks whether item either has `test` attribute applied, or
@@ -2084,7 +2073,7 @@ pub fn is_test_module_or_function(tcx: TyCtxt<'_>, item: &Item<'_>) -> bool {
         }
     }
 
-    matches!(item.kind, ItemKind::Mod(..)) && item.ident.name.as_str().contains("test")
+    matches!(item.kind, ItemKind::Mod(..)) && item.ident.name.as_str().split('_').any(|a| a == "test" || a == "tests")
 }
 
 macro_rules! op_utils {