107 lines
2.6 KiB
Rust
107 lines
2.6 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
|
|
#![warn(clippy::needless_bool)]
|
|
|
|
use std::cell::Cell;
|
|
|
|
macro_rules! bool_comparison_trigger {
|
|
($($i:ident: $def:expr, $stb:expr );+ $(;)*) => (
|
|
|
|
#[derive(Clone)]
|
|
pub struct Trigger {
|
|
$($i: (Cell<bool>, bool, bool)),+
|
|
}
|
|
|
|
#[allow(dead_code)]
|
|
impl Trigger {
|
|
pub fn trigger(&self, key: &str) -> bool {
|
|
$(
|
|
if let stringify!($i) = key {
|
|
return self.$i.1 && self.$i.2 == $def;
|
|
}
|
|
)+
|
|
false
|
|
}
|
|
}
|
|
)
|
|
}
|
|
|
|
#[allow(clippy::if_same_then_else)]
|
|
fn main() {
|
|
let x = true;
|
|
let y = false;
|
|
if x { true } else { true };
|
|
if x { false } else { false };
|
|
if x { true } else { false };
|
|
if x { false } else { true };
|
|
if x && y { false } else { true };
|
|
if x { x } else { false }; // would also be questionable, but we don't catch this yet
|
|
bool_ret(x);
|
|
bool_ret2(x);
|
|
bool_ret3(x);
|
|
bool_ret5(x, x);
|
|
bool_ret4(x);
|
|
bool_ret6(x, x);
|
|
needless_bool(x);
|
|
needless_bool2(x);
|
|
needless_bool3(x);
|
|
}
|
|
|
|
#[allow(clippy::if_same_then_else, clippy::needless_return)]
|
|
fn bool_ret(x: bool) -> bool {
|
|
if x { return true } else { return true };
|
|
}
|
|
|
|
#[allow(clippy::if_same_then_else, clippy::needless_return)]
|
|
fn bool_ret2(x: bool) -> bool {
|
|
if x { return false } else { return false };
|
|
}
|
|
|
|
#[allow(clippy::needless_return)]
|
|
fn bool_ret3(x: bool) -> bool {
|
|
if x { return true } else { return false };
|
|
}
|
|
|
|
#[allow(clippy::needless_return)]
|
|
fn bool_ret5(x: bool, y: bool) -> bool {
|
|
if x && y { return true } else { return false };
|
|
}
|
|
|
|
#[allow(clippy::needless_return)]
|
|
fn bool_ret4(x: bool) -> bool {
|
|
if x { return false } else { return true };
|
|
}
|
|
|
|
#[allow(clippy::needless_return)]
|
|
fn bool_ret6(x: bool, y: bool) -> bool {
|
|
if x && y { return false } else { return true };
|
|
}
|
|
|
|
fn needless_bool(x: bool) {
|
|
if x == true { };
|
|
}
|
|
|
|
fn needless_bool2(x: bool) {
|
|
if x == false { };
|
|
}
|
|
|
|
fn needless_bool3(x: bool) {
|
|
|
|
bool_comparison_trigger! {
|
|
test_one: false, false;
|
|
test_three: false, false;
|
|
test_two: true, true;
|
|
}
|
|
|
|
if x == true { };
|
|
if x == false { };
|
|
}
|