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Fix needless_bool.rs

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This commit is contained in:
Manish Goregaokar 2019-05-10 19:23:26 -07:00
parent 09a93291ec
commit da8b56d99a
1 changed files with 3 additions and 3 deletions
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6
clippy_lints/src/needless_bool.rs
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@ -3,7 +3,7 @@
//! This lint is **warn** by default //! This lint is **warn** by default
use crate::utils::sugg::Sugg; use crate::utils::sugg::Sugg;
use crate::utils::{in_macro, span_lint, span_lint_and_sugg}; use crate::utils::{higher, in_macro, span_lint, span_lint_and_sugg};
use rustc::hir::*; use rustc::hir::*;
use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass}; use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::{declare_lint_pass, declare_tool_lint}; use rustc::{declare_lint_pass, declare_tool_lint};
@ -59,7 +59,7 @@ declare_lint_pass!(NeedlessBool => [NEEDLESS_BOOL]);
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NeedlessBool { impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NeedlessBool {
fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, e: &'tcx Expr) { fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, e: &'tcx Expr) {
use self::Expression::*; use self::Expression::*;
if let ExprKind::If(ref pred, ref then_block, Some(ref else_expr)) = e.node { if let Some((ref pred, ref then_block, Some(ref else_expr))) = higher::if_block(&e) {
let reduce = |ret, not| { let reduce = |ret, not| {
let mut applicability = Applicability::MachineApplicable; let mut applicability = Applicability::MachineApplicable;
let snip = Sugg::hir_with_applicability(cx, pred, "<predicate>", &mut applicability); let snip = Sugg::hir_with_applicability(cx, pred, "<predicate>", &mut applicability);
@ -119,7 +119,7 @@ fn parent_node_is_if_expr<'a, 'b>(expr: &Expr, cx: &LateContext<'a, 'b>) -> bool
let parent_node = cx.tcx.hir().get_by_hir_id(parent_id); let parent_node = cx.tcx.hir().get_by_hir_id(parent_id);
if let rustc::hir::Node::Expr(e) = parent_node { if let rustc::hir::Node::Expr(e) = parent_node {
if let ExprKind::If(_, _, _) = e.node { if higher::if_block(&e).is_some() {
return true; return true;
} }
} }