mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 15:14:29 +00:00
108 lines
3.3 KiB
Rust
108 lines
3.3 KiB
Rust
#![allow(
|
|
unused_mut,
|
|
clippy::from_iter_instead_of_collect,
|
|
clippy::get_first,
|
|
clippy::useless_vec,
|
|
clippy::out_of_bounds_indexing
|
|
)]
|
|
#![warn(clippy::unwrap_used)]
|
|
#![deny(clippy::get_unwrap)]
|
|
|
|
use std::collections::{BTreeMap, HashMap, VecDeque};
|
|
|
|
struct GetFalsePositive {
|
|
arr: [u32; 3],
|
|
}
|
|
|
|
impl GetFalsePositive {
|
|
fn get(&self, pos: usize) -> Option<&u32> {
|
|
self.arr.get(pos)
|
|
}
|
|
fn get_mut(&mut self, pos: usize) -> Option<&mut u32> {
|
|
self.arr.get_mut(pos)
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
|
|
let mut some_slice = &mut [0, 1, 2, 3];
|
|
let mut some_vec = vec![0, 1, 2, 3];
|
|
let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
|
|
let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
|
|
let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
|
|
let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };
|
|
|
|
{
|
|
// Test `get().unwrap()`
|
|
let _ = boxed_slice.get(1).unwrap();
|
|
let _ = some_slice.get(0).unwrap();
|
|
let _ = some_vec.get(0).unwrap();
|
|
let _ = some_vecdeque.get(0).unwrap();
|
|
let _ = some_hashmap.get(&1).unwrap();
|
|
let _ = some_btreemap.get(&1).unwrap();
|
|
#[allow(clippy::unwrap_used)]
|
|
let _ = false_positive.get(0).unwrap();
|
|
// Test with deref
|
|
let _: u8 = *boxed_slice.get(1).unwrap();
|
|
}
|
|
|
|
{
|
|
// Test `get_mut().unwrap()`
|
|
*boxed_slice.get_mut(0).unwrap() = 1;
|
|
*some_slice.get_mut(0).unwrap() = 1;
|
|
*some_vec.get_mut(0).unwrap() = 1;
|
|
*some_vecdeque.get_mut(0).unwrap() = 1;
|
|
// Check false positives
|
|
#[allow(clippy::unwrap_used)]
|
|
{
|
|
*some_hashmap.get_mut(&1).unwrap() = 'b';
|
|
*some_btreemap.get_mut(&1).unwrap() = 'b';
|
|
*false_positive.get_mut(0).unwrap() = 1;
|
|
}
|
|
}
|
|
|
|
{
|
|
// Test `get().unwrap().foo()` and `get_mut().unwrap().bar()`
|
|
let _ = some_vec.get(0..1).unwrap().to_vec();
|
|
let _ = some_vec.get_mut(0..1).unwrap().to_vec();
|
|
}
|
|
}
|
|
mod issue9909 {
|
|
#![allow(clippy::identity_op, clippy::unwrap_used, dead_code)]
|
|
|
|
fn reduced() {
|
|
let f = &[1, 2, 3];
|
|
|
|
// include a borrow in the suggestion, even if the argument is not just a numeric literal
|
|
let _x: &i32 = f.get(1 + 2).unwrap();
|
|
|
|
// don't include a borrow here
|
|
let _x = f.get(1 + 2).unwrap().to_string();
|
|
|
|
// don't include a borrow here
|
|
let _x = f.get(1 + 2).unwrap().abs();
|
|
}
|
|
|
|
// original code:
|
|
fn linidx(row: usize, col: usize) -> usize {
|
|
row * 1 + col * 3
|
|
}
|
|
|
|
fn main_() {
|
|
let mut mat = [1.0f32, 5.0, 9.0, 2.0, 6.0, 10.0, 3.0, 7.0, 11.0, 4.0, 8.0, 12.0];
|
|
|
|
for i in 0..2 {
|
|
for j in i + 1..3 {
|
|
if mat[linidx(j, 3)] > mat[linidx(i, 3)] {
|
|
for k in 0..4 {
|
|
let (x, rest) = mat.split_at_mut(linidx(i, k) + 1);
|
|
let a = x.last_mut().unwrap();
|
|
let b = rest.get_mut(linidx(j, k) - linidx(i, k) - 1).unwrap();
|
|
::std::mem::swap(a, b);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
assert_eq!([9.0, 5.0, 1.0, 10.0, 6.0, 2.0, 11.0, 7.0, 3.0, 12.0, 8.0, 4.0], mat);
|
|
}
|
|
}
|