Auto merge of #3680 - g-bartoszek:needless-bool-else-if-brackets, r=oli-obk

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

diff --git a/clippy_lints/src/unused_io_amount.rs b/clippy_lints/src/unused_io_amount.rs
index 316415d73ad2a676df1c456571270d8d6033978a..27deb0d99459c7f9eff623547714170fa6a4cf2e 100644 (file)
--- a/clippy_lints/src/unused_io_amount.rs
+++ b/clippy_lints/src/unused_io_amount.rs
@@ -1,6 +1,7 @@
-use rustc::lint::*;
-use rustc::hir;
 use crate::utils::{is_try, match_qpath, match_trait_method, paths, span_lint};
+use rustc::hir;
+use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_tool_lint, lint_array};
 
 /// **What it does:** Checks for unused written/read amount.
 ///
@@ -38,16 +39,16 @@ fn get_lints(&self) -> LintArray {
 }
 
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnusedIoAmount {
-    fn check_stmt(&mut self, cx: &LateContext, s: &hir::Stmt) {
+    fn check_stmt(&mut self, cx: &LateContext<'_, '_>, s: &hir::Stmt) {
         let expr = match s.node {
-            hir::StmtSemi(ref expr, _) | hir::StmtExpr(ref expr, _) => &**expr,
+            hir::StmtKind::Semi(ref expr) | hir::StmtKind::Expr(ref expr) => &**expr,
             _ => return,
         };
 
         match expr.node {
-            hir::ExprMatch(ref res, _, _) if is_try(expr).is_some() => {
-                if let hir::ExprCall(ref func, ref args) = res.node {
-                    if let hir::ExprPath(ref path) = func.node {
+            hir::ExprKind::Match(ref res, _, _) if is_try(expr).is_some() => {
+                if let hir::ExprKind::Call(ref func, ref args) = res.node {
+                    if let hir::ExprKind::Path(ref path) = func.node {
                         if match_qpath(path, &paths::TRY_INTO_RESULT) && args.len() == 1 {
                             check_method_call(cx, &args[0], expr);
                         }
@@ -57,7 +58,7 @@ fn check_stmt(&mut self, cx: &LateContext, s: &hir::Stmt) {
                 }
             },
 
-            hir::ExprMethodCall(ref path, _, ref args) => match &*path.ident.as_str() {
+            hir::ExprKind::MethodCall(ref path, _, ref args) => match &*path.ident.as_str() {
                 "expect" | "unwrap" | "unwrap_or" | "unwrap_or_else" => {
                     check_method_call(cx, &args[0], expr);
                 },
@@ -69,8 +70,8 @@ fn check_stmt(&mut self, cx: &LateContext, s: &hir::Stmt) {
     }
 }
 
-fn check_method_call(cx: &LateContext, call: &hir::Expr, expr: &hir::Expr) {
-    if let hir::ExprMethodCall(ref path, _, _) = call.node {
+fn check_method_call(cx: &LateContext<'_, '_>, call: &hir::Expr, expr: &hir::Expr) {
+    if let hir::ExprKind::MethodCall(ref path, _, _) = call.node {
         let symbol = &*path.ident.as_str();
         if match_trait_method(cx, call, &paths::IO_READ) && symbol == "read" {
             span_lint(