Auto merge of #3946 - rchaser53:issue-3920, r=flip1995

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

diff --git a/clippy_lints/src/items_after_statements.rs b/clippy_lints/src/items_after_statements.rs
index f14c70dc4ddc3ed0d7a1a1f079fa30429ce79557..f93f515d0239d7d9dc80624aac0c4d6d1fecfd1f 100644 (file)
--- a/clippy_lints/src/items_after_statements.rs
+++ b/clippy_lints/src/items_after_statements.rs
@@ -1,34 +1,36 @@
 //! lint when items are used after statements
 
-use rustc::lint::*;
+use crate::utils::{in_macro, span_lint};
+use matches::matches;
+use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
+use rustc::{declare_tool_lint, lint_array};
 use syntax::ast::*;
-use utils::{in_macro, span_lint};
 
-/// **What it does:** Checks for items declared after some statement in a block.
-///
-/// **Why is this bad?** Items live for the entire scope they are declared
-/// in. But statements are processed in order. This might cause confusion as
-/// it's hard to figure out which item is meant in a statement.
-///
-/// **Known problems:** None.
-///
-/// **Example:**
-/// ```rust
-/// fn foo() {
-///     println!("cake");
-/// }
-///
-/// fn main() {
-///     foo(); // prints "foo"
-///     fn foo() {
-///         println!("foo");
-///     }
-///     foo(); // prints "foo"
-/// }
-/// ```
-declare_lint! {
+declare_clippy_lint! {
+    /// **What it does:** Checks for items declared after some statement in a block.
+    ///
+    /// **Why is this bad?** Items live for the entire scope they are declared
+    /// in. But statements are processed in order. This might cause confusion as
+    /// it's hard to figure out which item is meant in a statement.
+    ///
+    /// **Known problems:** None.
+    ///
+    /// **Example:**
+    /// ```rust
+    /// fn foo() {
+    ///     println!("cake");
+    /// }
+    ///
+    /// fn main() {
+    ///     foo(); // prints "foo"
+    ///     fn foo() {
+    ///         println!("foo");
+    ///     }
+    ///     foo(); // prints "foo"
+    /// }
+    /// ```
     pub ITEMS_AFTER_STATEMENTS,
-    Allow,
+    pedantic,
     "blocks where an item comes after a statement"
 }
 
@@ -38,18 +40,24 @@ impl LintPass for ItemsAfterStatements {
     fn get_lints(&self) -> LintArray {
         lint_array!(ITEMS_AFTER_STATEMENTS)
     }
+
+    fn name(&self) -> &'static str {
+        "ItemsAfterStatements"
+    }
 }
 
 impl EarlyLintPass for ItemsAfterStatements {
-    fn check_block(&mut self, cx: &EarlyContext, item: &Block) {
+    fn check_block(&mut self, cx: &EarlyContext<'_>, item: &Block) {
         if in_macro(item.span) {
             return;
         }
 
         // skip initial items
-        let stmts = item.stmts.iter().map(|stmt| &stmt.node).skip_while(|s| {
-            matches!(**s, StmtKind::Item(..))
-        });
+        let stmts = item
+            .stmts
+            .iter()
+            .map(|stmt| &stmt.node)
+            .skip_while(|s| matches!(**s, StmtKind::Item(..)));
 
         // lint on all further items
         for stmt in stmts {
@@ -66,7 +74,7 @@ fn check_block(&mut self, cx: &EarlyContext, item: &Block) {
                     ITEMS_AFTER_STATEMENTS,
                     it.span,
                     "adding items after statements is confusing, since items exist from the \
-                           start of the scope",
+                     start of the scope",
                 );
             }
         }