add `tcx` to `fn walk`

[rust.git] / clippy_lints / src / excessive_bools.rs

diff --git a/clippy_lints/src/excessive_bools.rs b/clippy_lints/src/excessive_bools.rs
index 71537d4a9f07f146e67265de61b570be7dde2032..476e6d23f12151e869270de3c8265bc647993d25 100644 (file)
--- a/clippy_lints/src/excessive_bools.rs
+++ b/clippy_lints/src/excessive_bools.rs
@@ -1,25 +1,26 @@
-use crate::utils::{attr_by_name, in_macro, match_path_ast, span_lint_and_help};
+use clippy_utils::diagnostics::span_lint_and_help;
+use clippy_utils::in_macro;
+use rustc_ast::ast::{AssocItemKind, Extern, FnKind, FnSig, ImplKind, Item, ItemKind, TraitKind, Ty, TyKind};
 use rustc_lint::{EarlyContext, EarlyLintPass};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::Span;
-use syntax::ast::{AssocItemKind, Extern, FnSig, Item, ItemKind, Ty, TyKind};
+use rustc_span::{sym, Span};
 
 use std::convert::TryInto;
 
 declare_clippy_lint! {
-    /// **What it does:** Checks for excessive
+    /// ### What it does
+    /// Checks for excessive
     /// use of bools in structs.
     ///
-    /// **Why is this bad?** Excessive bools in a struct
+    /// ### Why is this bad?
+    /// Excessive bools in a struct
     /// is often a sign that it's used as a state machine,
     /// which is much better implemented as an enum.
     /// If it's not the case, excessive bools usually benefit
     /// from refactoring into two-variant enums for better
     /// readability and API.
     ///
-    /// **Known problems:** None.
-    ///
-    /// **Example:**
+    /// ### Example
     /// Bad:
     /// ```rust
     /// struct S {
@@ -43,19 +44,19 @@
 }
 
 declare_clippy_lint! {
-    /// **What it does:** Checks for excessive use of
+    /// ### What it does
+    /// Checks for excessive use of
     /// bools in function definitions.
     ///
-    /// **Why is this bad?** Calls to such functions
+    /// ### Why is this bad?
+    /// Calls to such functions
     /// are confusing and error prone, because it's
     /// hard to remember argument order and you have
     /// no type system support to back you up. Using
     /// two-variant enums instead of bools often makes
     /// API easier to use.
     ///
-    /// **Known problems:** None.
-    ///
-    /// **Example:**
+    /// ### Example
     /// Bad:
     /// ```rust,ignore
     /// fn f(is_round: bool, is_hot: bool) { ... }
@@ -114,6 +115,7 @@ fn check_fn_sig(&self, cx: &EarlyContext<'_>, fn_sig: &FnSig, span: Span) {
                 FN_PARAMS_EXCESSIVE_BOOLS,
                 span,
                 &format!("more than {} bools in function parameters", self.max_fn_params_bools),
+                None,
                 "consider refactoring bools into two-variant enums",
             );
         }
@@ -124,7 +126,9 @@ fn check_fn_sig(&self, cx: &EarlyContext<'_>, fn_sig: &FnSig, span: Span) {
 
 fn is_bool_ty(ty: &Ty) -> bool {
     if let TyKind::Path(None, path) = &ty.kind {
-        return match_path_ast(path, &["bool"]);
+        if let [name] = path.segments.as_slice() {
+            return name.ident.name == sym::bool;
+        }
     }
     false
 }
@@ -136,7 +140,7 @@ fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) {
         }
         match &item.kind {
             ItemKind::Struct(variant_data, _) => {
-                if attr_by_name(&item.attrs, "repr").is_some() {
+                if item.attrs.iter().any(|attr| attr.has_name(sym::repr)) {
                     return;
                 }
 
@@ -153,21 +157,22 @@ fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) {
                         STRUCT_EXCESSIVE_BOOLS,
                         item.span,
                         &format!("more than {} bools in a struct", self.max_struct_bools),
+                        None,
                         "consider using a state machine or refactoring bools into two-variant enums",
                     );
                 }
             },
-            ItemKind::Impl {
+            ItemKind::Impl(box ImplKind {
                 of_trait: None, items, ..
-            }
-            | ItemKind::Trait(_, _, _, _, items) => {
+            })
+            | ItemKind::Trait(box TraitKind(.., items)) => {
                 for item in items {
-                    if let AssocItemKind::Fn(_, fn_sig, _, _) = &item.kind {
+                    if let AssocItemKind::Fn(box FnKind(_, fn_sig, _, _)) = &item.kind {
                         self.check_fn_sig(cx, fn_sig, item.span);
                     }
                 }
             },
-            ItemKind::Fn(_, fn_sig, _, _) => self.check_fn_sig(cx, fn_sig, item.span),
+            ItemKind::Fn(box FnKind(_, fn_sig, _, _)) => self.check_fn_sig(cx, fn_sig, item.span),
             _ => (),
         }
     }