X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=clippy_lints%2Fsrc%2Fzero_div_zero.rs;h=ec380360e547e1f0297916427edb84fa8d40a71c;hb=6d1225981177587fbb68d9c4902c770c3dbaafb0;hp=aaba018484508df27b3bbdab84d555edcc50f679;hpb=424a33720d61e1cdc0f8886000d4549857a6ee55;p=rust.git

diff --git a/clippy_lints/src/zero_div_zero.rs b/clippy_lints/src/zero_div_zero.rs
index aaba0184845..ec380360e54 100644
--- a/clippy_lints/src/zero_div_zero.rs
+++ b/clippy_lints/src/zero_div_zero.rs
@@ -1,39 +1,36 @@
 use crate::consts::{constant_simple, Constant};
-use rustc::lint::*;
-use rustc::hir::*;
 use crate::utils::span_help_and_lint;
+use if_chain::if_chain;
+use rustc::declare_lint_pass;
+use rustc::hir::*;
+use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc_session::declare_tool_lint;
 
-/// **What it does:** Checks for `0.0 / 0.0`.
-///
-/// **Why is this bad?** It's less readable than `std::f32::NAN` or
-/// `std::f64::NAN`.
-///
-/// **Known problems:** None.
-///
-/// **Example:**
-/// ```rust
-/// 0.0f32 / 0.0
-/// ```
 declare_clippy_lint! {
+    /// **What it does:** Checks for `0.0 / 0.0`.
+    ///
+    /// **Why is this bad?** It's less readable than `std::f32::NAN` or
+    /// `std::f64::NAN`.
+    ///
+    /// **Known problems:** None.
+    ///
+    /// **Example:**
+    /// ```rust
+    /// 0.0f32 / 0.0;
+    /// ```
     pub ZERO_DIVIDED_BY_ZERO,
     complexity,
     "usage of `0.0 / 0.0` to obtain NaN instead of std::f32::NaN or std::f64::NaN"
 }
 
-pub struct Pass;
-
-impl LintPass for Pass {
-    fn get_lints(&self) -> LintArray {
-        lint_array!(ZERO_DIVIDED_BY_ZERO)
-    }
-}
+declare_lint_pass!(ZeroDiv => [ZERO_DIVIDED_BY_ZERO]);
 
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
+impl<'a, 'tcx> LateLintPass<'a, 'tcx> for ZeroDiv {
     fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
         // check for instances of 0.0/0.0
         if_chain! {
-            if let ExprBinary(ref op, ref left, ref right) = expr.node;
-            if let BinOp_::BiDiv = op.node;
+            if let ExprKind::Binary(ref op, ref left, ref right) = expr.kind;
+            if let BinOpKind::Div = op.node;
             // TODO - constant_simple does not fold many operations involving floats.
             // That's probably fine for this lint - it's pretty unlikely that someone would
             // do something like 0.0/(2.0 - 2.0), but it would be nice to warn on that case too.