94 lines
2.1 KiB
Rust
94 lines
2.1 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(block_in_if_condition_expr)]
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#![deny(block_in_if_condition_stmt)]
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#![allow(unused, let_and_return)]
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#![warn(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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}
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if blocky_too!() {
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}
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}
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fn condition_has_block() -> i32 {
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if { //~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 } { //~ERROR omit braces around single expression condition
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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 predicate<F: FnOnce(T) -> bool, T>(pfn: F, val:T) -> bool {
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pfn(val)
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}
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fn pred_test() {
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let v = 3;
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let sky = "blue";
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// this is a sneaky case, where the block isn't directly in the condition, but is actually
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// inside a closure that the condition is using. same principle applies. add some extra
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// expressions to make sure linter isn't confused by them.
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if v == 3 && sky == "blue" && predicate(|x| { let target = 3; x == target }, v) { //~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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}
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if predicate(|x| { let target = 3; x == target }, v) { //~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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}
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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 { //~ WARN this boolean expression can be simplified
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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 closure_without_block() {
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if predicate(|x| x == 3, 6) {
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}
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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 main() {
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}
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