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Move get_unwrap to restriction

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fixes #3862
This commit is contained in:
Manish Goregaokar 2019-03-09 10:12:22 -08:00
parent 920112d723
commit 038ec7f5d8
5 changed files with 22 additions and 17 deletions
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3
clippy_lints/src/lib.rs
View file

@ -583,6 +583,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
matches::WILDCARD_ENUM_MATCH_ARM,
mem_forget::MEM_FORGET,
methods::CLONE_ON_REF_PTR,
methods::GET_UNWRAP,
methods::OPTION_UNWRAP_USED,
methods::RESULT_UNWRAP_USED,
methods::WRONG_PUB_SELF_CONVENTION,
@ -749,7 +750,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
methods::CLONE_ON_COPY,
methods::EXPECT_FUN_CALL,
methods::FILTER_NEXT,
methods::GET_UNWRAP,
methods::INTO_ITER_ON_ARRAY,
methods::INTO_ITER_ON_REF,
methods::ITER_CLONED_COLLECT,
@ -908,7 +908,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
matches::SINGLE_MATCH,
mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
methods::CHARS_LAST_CMP,
methods::GET_UNWRAP,
methods::INTO_ITER_ON_REF,
methods::ITER_CLONED_COLLECT,
methods::ITER_SKIP_NEXT,

2
clippy_lints/src/methods/mod.rs
View file

@ -579,7 +579,7 @@ declare_clippy_lint! {
/// some_vec[0] = 1;
/// ```
pub GET_UNWRAP,
style,
restriction,
"using `.get().unwrap()` or `.get_mut().unwrap()` when using `[]` would work instead"
}

1
tests/ui/get_unwrap.fixed
View file

@ -1,5 +1,6 @@
// run-rustfix
#![allow(unused_mut)]
#![deny(clippy::get_unwrap)]
use std::collections::BTreeMap;
use std::collections::HashMap;

1
tests/ui/get_unwrap.rs
View file

@ -1,5 +1,6 @@
// run-rustfix
#![allow(unused_mut)]
#![deny(clippy::get_unwrap)]
use std::collections::BTreeMap;
use std::collections::HashMap;

32
tests/ui/get_unwrap.stderr
View file

@ -1,79 +1,83 @@
error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:33:17
--> $DIR/get_unwrap.rs:34:17
|
LL | let _ = boxed_slice.get(1).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&boxed_slice[1]`
|
= note: `-D clippy::get-unwrap` implied by `-D warnings`
note: lint level defined here
--> $DIR/get_unwrap.rs:3:9
|
LL | #![deny(clippy::get_unwrap)]
| ^^^^^^^^^^^^^^^^^^
error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:34:17
--> $DIR/get_unwrap.rs:35:17
|
LL | let _ = some_slice.get(0).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_slice[0]`
error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:35:17
--> $DIR/get_unwrap.rs:36:17
|
LL | let _ = some_vec.get(0).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vec[0]`
error: called `.get().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:36:17
--> $DIR/get_unwrap.rs:37:17
|
LL | let _ = some_vecdeque.get(0).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_vecdeque[0]`
error: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:37:17
--> $DIR/get_unwrap.rs:38:17
|
LL | let _ = some_hashmap.get(&1).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_hashmap[&1]`
error: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:38:17
--> $DIR/get_unwrap.rs:39:17
|
LL | let _ = some_btreemap.get(&1).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&some_btreemap[&1]`
error: called `.get().unwrap()` on a slice. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:41:21
--> $DIR/get_unwrap.rs:42:21
|
LL | let _: u8 = *boxed_slice.get(1).unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[1]`
error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:46:9
--> $DIR/get_unwrap.rs:47:9
|
LL | *boxed_slice.get_mut(0).unwrap() = 1;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `boxed_slice[0]`
error: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:47:9
--> $DIR/get_unwrap.rs:48:9
|
LL | *some_slice.get_mut(0).unwrap() = 1;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_slice[0]`
error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:48:9
--> $DIR/get_unwrap.rs:49:9
|
LL | *some_vec.get_mut(0).unwrap() = 1;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0]`
error: called `.get_mut().unwrap()` on a VecDeque. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:49:9
--> $DIR/get_unwrap.rs:50:9
|
LL | *some_vecdeque.get_mut(0).unwrap() = 1;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vecdeque[0]`
error: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:58:17
--> $DIR/get_unwrap.rs:59:17
|
LL | let _ = some_vec.get(0..1).unwrap().to_vec();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`
error: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
--> $DIR/get_unwrap.rs:59:17
--> $DIR/get_unwrap.rs:60:17
|
LL | let _ = some_vec.get_mut(0..1).unwrap().to_vec();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `some_vec[0..1]`