Merge commit '4911ab124c481430672a3833b37075e6435ec34d' into clippyup

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

diff --git a/clippy_lints/src/neg_cmp_op_on_partial_ord.rs b/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
index e05a953b306084cef03d06c125d1e93df34dfdbe..4fb899125e8ad9f0612149d10b97ecf360bc778c 100644 (file)
--- a/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
+++ b/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
@@ -1,7 +1,8 @@
 use if_chain::if_chain;
-use rustc::hir::*;
-use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
-use rustc::{declare_lint_pass, declare_tool_lint};
+use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp};
+use rustc_lint::{LateContext, LateLintPass, LintContext};
+use rustc_middle::lint::in_external_macro;
+use rustc_session::{declare_lint_pass, declare_tool_lint};
 
 use crate::utils::{self, paths, span_lint};
 
@@ -24,13 +25,13 @@
     ///
     /// // Bad
     /// let a = 1.0;
-    /// let b = std::f64::NAN;
+    /// let b = f64::NAN;
     ///
     /// let _not_less_or_equal = !(a <= b);
     ///
     /// // Good
     /// let a = 1.0;
-    /// let b = std::f64::NAN;
+    /// let b = f64::NAN;
     ///
     /// let _not_less_or_equal = match a.partial_cmp(&b) {
     ///     None | Some(Ordering::Greater) => true,
@@ -44,18 +45,18 @@
 
 declare_lint_pass!(NoNegCompOpForPartialOrd => [NEG_CMP_OP_ON_PARTIAL_ORD]);
 
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NoNegCompOpForPartialOrd {
-    fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
+impl<'tcx> LateLintPass<'tcx> for NoNegCompOpForPartialOrd {
+    fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if_chain! {
 
             if !in_external_macro(cx.sess(), expr.span);
-            if let ExprKind::Unary(UnOp::UnNot, ref inner) = expr.node;
-            if let ExprKind::Binary(ref op, ref left, _) = inner.node;
+            if let ExprKind::Unary(UnOp::UnNot, ref inner) = expr.kind;
+            if let ExprKind::Binary(ref op, ref left, _) = inner.kind;
             if let BinOpKind::Le | BinOpKind::Ge | BinOpKind::Lt | BinOpKind::Gt = op.node;
 
             then {
 
-                let ty = cx.tables.expr_ty(left);
+                let ty = cx.typeck_results().expr_ty(left);
 
                 let implements_ord = {
                     if let Some(id) = utils::get_trait_def_id(cx, &paths::ORD) {
@@ -66,7 +67,7 @@ fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
                 };
 
                 let implements_partial_ord = {
-                    if let Some(id) = utils::get_trait_def_id(cx, &paths::PARTIAL_ORD) {
+                    if let Some(id) = cx.tcx.lang_items().partial_ord_trait() {
                         utils::implements_trait(cx, ty, id, &[])
                     } else {
                         return;
@@ -78,10 +79,10 @@ fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
                         cx,
                         NEG_CMP_OP_ON_PARTIAL_ORD,
                         expr.span,
-                        "The use of negated comparison operators on partially ordered \
-                        types produces code that is hard to read and refactor. Please \
+                        "the use of negated comparison operators on partially ordered \
+                        types produces code that is hard to read and refactor, please \
                         consider using the `partial_cmp` method instead, to make it \
-                        clear that the two values could be incomparable."
+                        clear that the two values could be incomparable"
                     )
                 }
             }