119 lines
2.9 KiB
Rust
119 lines
2.9 KiB
Rust
#![allow(unused, clippy::diverging_sub_expression, clippy::needless_if)]
|
|
#![warn(clippy::nonminimal_bool)]
|
|
|
|
fn methods_with_negation() {
|
|
let a: Option<i32> = unimplemented!();
|
|
let b: Result<i32, i32> = unimplemented!();
|
|
let _ = a.is_some();
|
|
let _ = a.is_none();
|
|
let _ = a.is_none();
|
|
let _ = a.is_some();
|
|
let _ = b.is_err();
|
|
let _ = b.is_ok();
|
|
let _ = b.is_ok();
|
|
let _ = b.is_err();
|
|
let c = false;
|
|
let _ = a.is_none() || c;
|
|
let _ = a.is_none() && c;
|
|
let _ = !(!c ^ c) || a.is_none();
|
|
let _ = (!c ^ c) || a.is_none();
|
|
let _ = !c ^ c || a.is_none();
|
|
}
|
|
|
|
// Simplified versions of https://github.com/rust-lang/rust-clippy/issues/2638
|
|
// clippy::nonminimal_bool should only check the built-in Result and Some type, not
|
|
// any other types like the following.
|
|
enum CustomResultOk<E> {
|
|
Ok,
|
|
Err(E),
|
|
}
|
|
enum CustomResultErr<E> {
|
|
Ok,
|
|
Err(E),
|
|
}
|
|
enum CustomSomeSome<T> {
|
|
Some(T),
|
|
None,
|
|
}
|
|
enum CustomSomeNone<T> {
|
|
Some(T),
|
|
None,
|
|
}
|
|
|
|
impl<E> CustomResultOk<E> {
|
|
pub fn is_ok(&self) -> bool {
|
|
true
|
|
}
|
|
}
|
|
|
|
impl<E> CustomResultErr<E> {
|
|
pub fn is_err(&self) -> bool {
|
|
true
|
|
}
|
|
}
|
|
|
|
impl<T> CustomSomeSome<T> {
|
|
pub fn is_some(&self) -> bool {
|
|
true
|
|
}
|
|
}
|
|
|
|
impl<T> CustomSomeNone<T> {
|
|
pub fn is_none(&self) -> bool {
|
|
true
|
|
}
|
|
}
|
|
|
|
fn dont_warn_for_custom_methods_with_negation() {
|
|
let res = CustomResultOk::Err("Error");
|
|
// Should not warn and suggest 'is_err()' because the type does not
|
|
// implement is_err().
|
|
if !res.is_ok() {}
|
|
|
|
let res = CustomResultErr::Err("Error");
|
|
// Should not warn and suggest 'is_ok()' because the type does not
|
|
// implement is_ok().
|
|
if !res.is_err() {}
|
|
|
|
let res = CustomSomeSome::Some("thing");
|
|
// Should not warn and suggest 'is_none()' because the type does not
|
|
// implement is_none().
|
|
if !res.is_some() {}
|
|
|
|
let res = CustomSomeNone::Some("thing");
|
|
// Should not warn and suggest 'is_some()' because the type does not
|
|
// implement is_some().
|
|
if !res.is_none() {}
|
|
}
|
|
|
|
// Only Built-in Result and Some types should suggest the negated alternative
|
|
fn warn_for_built_in_methods_with_negation() {
|
|
let res: Result<usize, usize> = Ok(1);
|
|
if res.is_err() {}
|
|
if res.is_ok() {}
|
|
|
|
let res = Some(1);
|
|
if res.is_none() {}
|
|
if res.is_some() {}
|
|
}
|
|
|
|
#[allow(clippy::neg_cmp_op_on_partial_ord)]
|
|
fn dont_warn_for_negated_partial_ord_comparison() {
|
|
let a: f64 = unimplemented!();
|
|
let b: f64 = unimplemented!();
|
|
let _ = !(a < b);
|
|
let _ = !(a <= b);
|
|
let _ = !(a > b);
|
|
let _ = !(a >= b);
|
|
}
|
|
|
|
fn issue_12625() {
|
|
let a = 0;
|
|
let b = 0;
|
|
if (a as u64) < b {} //~ ERROR: this boolean expression can be simplified
|
|
if (a as u64) < b {} //~ ERROR: this boolean expression can be simplified
|
|
if a as u64 > b {} //~ ERROR: this boolean expression can be simplified
|
|
}
|
|
|
|
fn main() {}
|