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|
#![warn(clippy::match_single_binding)]
#![allow(
unused,
clippy::let_unit_value,
clippy::no_effect,
clippy::toplevel_ref_arg,
clippy::uninlined_format_args,
clippy::useless_vec
)]
struct Point {
x: i32,
y: i32,
}
fn coords() -> Point {
Point { x: 1, y: 2 }
}
macro_rules! foo {
($param:expr) => {
match $param {
_ => println!("whatever"),
}
};
}
fn main() {
let a = 1;
let b = 2;
let c = 3;
// Lint
let (x, y, z) = (a, b, c);
{
println!("{} {} {}", x, y, z);
}
// Lint
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
// Ok
foo!(a);
// Ok
match a {
2 => println!("2"),
_ => println!("Not 2"),
}
// Ok
let d = Some(5);
match d {
Some(d) => println!("{}", d),
_ => println!("None"),
}
// Lint
println!("whatever");
// Lint
{
let x = 29;
println!("x has a value of {}", x);
}
// Lint
{
let e = 5 * a;
if e >= 5 {
println!("e is superior to 5");
}
}
// Lint
let p = Point { x: 0, y: 7 };
let Point { x, y } = p;
println!("Coords: ({}, {})", x, y);
// Lint
let Point { x: x1, y: y1 } = p;
println!("Coords: ({}, {})", x1, y1);
// Lint
let x = 5;
let ref r = x;
println!("Got a reference to {}", r);
// Lint
let mut x = 5;
let ref mut mr = x;
println!("Got a mutable reference to {}", mr);
// Lint
let Point { x, y } = coords();
let product = x * y;
// Lint
let v = vec![Some(1), Some(2), Some(3), Some(4)];
#[allow(clippy::let_and_return)]
let _ = v
.iter()
.map(|i| {
let unwrapped = i.unwrap();
unwrapped
})
.collect::<Vec<u8>>();
// Ok
let x = 1;
match x {
#[cfg(disabled_feature)]
0 => println!("Disabled branch"),
_ => println!("Enabled branch"),
}
// Ok
let x = 1;
let y = 1;
match match y {
0 => 1,
_ => 2,
} {
#[cfg(disabled_feature)]
0 => println!("Array index start"),
_ => println!("Not an array index start"),
}
// Lint
let x = 1;
println!("Not an array index start")
}
fn issue_8723() {
let (mut val, idx) = ("a b", 1);
let (pre, suf) = val.split_at(idx);
val = {
println!("{}", pre);
suf
};
let _ = val;
}
fn side_effects() {}
fn issue_9575() {
let _ = || {
side_effects();
println!("Needs curlies")
};
}
fn issue_9725(r: Option<u32>) {
let x = r;
match x {
Some(_) => {
println!("Some");
},
None => {
println!("None");
},
};
}
fn issue_10447() -> usize {
();
let a = ();
side_effects();
let b = side_effects();
println!("1");
let c = println!("1");
let in_expr = [
(),
side_effects(),
println!("1"),
];
2
}
fn issue14634() {
macro_rules! id {
($i:ident) => {
$i
};
}
dbg!(3);
println!("here");
//~^^^ match_single_binding
let id!(a) = dbg!(3);
println!("found {a}");
//~^^^ match_single_binding
let id!(b) = dbg!(3);
let id!(_a) = dbg!(b + 1);
//~^^^ match_single_binding
}
mod issue14991 {
struct AnnoConstWOBlock {
inner: [(); {
let _n = 1;
42
}],
}
struct AnnoConstWBlock {
inner: [(); {
let _n = 1;
42
}],
}
}
mod issue15018 {
fn used_later(a: i32, b: i32, c: i32) {
let x = 1;
{
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
}
println!("x = {x}");
}
fn not_used_later(a: i32, b: i32, c: i32) {
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z)
}
#[allow(irrefutable_let_patterns)]
fn not_used_later_but_shadowed(a: i32, b: i32, c: i32) {
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
let x = 1;
println!("x = {x}");
}
#[allow(irrefutable_let_patterns)]
fn not_used_later_but_shadowed_nested(a: i32, b: i32, c: i32) {
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
if let (x, y, z) = (a, b, c) {
println!("{} {} {}", x, y, z)
}
{
let x: i32 = 1;
{
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
}
if let (x, y, z) = (a, x, c) {
println!("{} {} {}", x, y, z)
}
}
{
let (x, y, z) = (a, b, c);
println!("{} {} {}", x, y, z);
let fn_ = |y| {
println!("{} {} {}", a, b, y);
};
fn_(c);
}
}
}
#[allow(clippy::short_circuit_statement)]
fn issue15269(a: usize, b: usize, c: usize) -> bool {
a < b
&& b < c;
a < b
&& b < c
}
|
