-use consts::{constant_simple, Constant};
+use crate::consts::{constant_simple, Constant};
use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
use rustc::hir::*;
-use utils::span_help_and_lint;
+use crate::utils::span_help_and_lint;
/// **What it does:** Checks for `0.0 / 0.0`.
///
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.node;
+ 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.
- if let Some(lhs_value) = constant_simple(cx, left);
- if let Some(rhs_value) = constant_simple(cx, right);
+ if let Some(lhs_value) = constant_simple(cx, cx.tables, left);
+ if let Some(rhs_value) = constant_simple(cx, cx.tables, right);
if Constant::F32(0.0) == lhs_value || Constant::F64(0.0) == lhs_value;
if Constant::F32(0.0) == rhs_value || Constant::F64(0.0) == rhs_value;
then {