134 lines
2.6 KiB
Rust
134 lines
2.6 KiB
Rust
//@aux-build:proc_macro_attr.rs
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#![warn(clippy::blocks_in_conditions)]
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#![allow(
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unused,
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clippy::let_and_return,
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clippy::needless_if,
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clippy::missing_transmute_annotations
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)]
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#![warn(clippy::nonminimal_bool)]
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macro_rules! blocky {
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() => {{ true }};
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}
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macro_rules! blocky_too {
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() => {{
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let r = true;
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r
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}};
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}
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fn macro_if() {
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if blocky!() {}
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if blocky_too!() {}
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}
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fn condition_has_block() -> i32 {
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if {
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//~^ ERROR: in an `if` condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
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let x = 3;
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x == 3
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} {
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6
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} else {
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10
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}
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}
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fn condition_has_block_with_single_expression() -> i32 {
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if { true } { 6 } else { 10 }
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//~^ ERROR: omit braces around single expression condition
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}
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fn condition_is_normal() -> i32 {
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let x = 3;
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if true && x == 3 { 6 } else { 10 }
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}
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fn condition_is_unsafe_block() {
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let a: i32 = 1;
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// this should not warn because the condition is an unsafe block
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if unsafe { 1u32 == std::mem::transmute(a) } {
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println!("1u32 == a");
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}
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}
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fn block_in_assert() {
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let opt = Some(42);
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assert!(
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opt.as_ref()
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.map(|val| {
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let mut v = val * 2;
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v -= 1;
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v * 3
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})
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.is_some()
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);
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}
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// issue #11814
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fn block_in_match_expr(num: i32) -> i32 {
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match {
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//~^ ERROR: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
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let opt = Some(2);
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opt
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} {
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Some(0) => 1,
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Some(n) => num * 2,
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None => 0,
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};
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match unsafe {
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let hearty_hearty_hearty = vec![240, 159, 146, 150];
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String::from_utf8_unchecked(hearty_hearty_hearty).as_str()
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} {
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"💖" => 1,
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"what" => 2,
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_ => 3,
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}
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}
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// issue #12162
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macro_rules! timed {
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($name:expr, $body:expr $(,)?) => {{
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let __scope = ();
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$body
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}};
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}
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fn issue_12162() {
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if timed!("check this!", false) {
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println!();
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}
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}
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mod issue_12016 {
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#[proc_macro_attr::fake_desugar_await]
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pub async fn await_becomes_block() -> i32 {
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match Some(1).await {
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Some(1) => 2,
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Some(2) => 3,
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_ => 0,
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}
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}
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}
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fn in_closure() {
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let v = vec![1, 2, 3];
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if v.into_iter()
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.filter(|x| {
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let y = x + 1;
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y > 3
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})
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.any(|x| x == 5)
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{
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println!("contains 4!");
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}
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}
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fn main() {}
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