mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 15:14:29 +00:00
Extract IteratorFalsePositives into option_helpers.rs
This was previously duplicated in #3605
This commit is contained in:
parent
eaaee23847
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0c54913afe
5 changed files with 69 additions and 103 deletions
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@ -4,3 +4,39 @@
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macro_rules! opt_map {
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($opt:expr, $map:expr) => {($opt).map($map)};
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}
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/// Struct to generate false positive for Iterator-based lints
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#[derive(Copy, Clone)]
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struct IteratorFalsePositives {
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foo: u32,
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}
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impl IteratorFalsePositives {
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fn filter(self) -> IteratorFalsePositives {
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self
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}
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fn next(self) -> IteratorFalsePositives {
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self
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}
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fn find(self) -> Option<u32> {
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Some(self.foo)
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}
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fn position(self) -> Option<u32> {
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Some(self.foo)
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}
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fn rposition(self) -> Option<u32> {
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Some(self.foo)
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}
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fn nth(self, n: usize) -> Option<u32> {
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Some(self.foo)
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}
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fn skip(self, _: usize) -> IteratorFalsePositives {
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self
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}
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}
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@ -10,41 +10,7 @@
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#![warn(clippy::iter_skip_next)]
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#![allow(clippy::blacklisted_name)]
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/// Struct to generate false positive for Iterator-based lints
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#[derive(Copy, Clone)]
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struct IteratorFalsePositives {
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foo: u32,
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}
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impl IteratorFalsePositives {
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fn filter(self) -> IteratorFalsePositives {
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self
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}
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fn next(self) -> IteratorFalsePositives {
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self
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}
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fn find(self) -> Option<u32> {
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Some(self.foo)
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}
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fn position(self) -> Option<u32> {
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Some(self.foo)
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}
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fn rposition(self) -> Option<u32> {
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Some(self.foo)
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}
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fn nth(self, n: usize) -> Option<u32> {
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Some(self.foo)
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}
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fn skip(self, _: usize) -> IteratorFalsePositives {
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self
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}
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}
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include!("../auxiliary/option_helpers.rs");
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/// Checks implementation of `ITER_SKIP_NEXT` lint
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fn iter_skip_next() {
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@ -1,5 +1,5 @@
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/iter_skip_next.rs:52:13
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--> $DIR/iter_skip_next.rs:18:13
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LL | let _ = some_vec.iter().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -7,19 +7,19 @@ LL | let _ = some_vec.iter().skip(42).next();
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= note: `-D clippy::iter-skip-next` implied by `-D warnings`
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/iter_skip_next.rs:53:13
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--> $DIR/iter_skip_next.rs:19:13
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LL | let _ = some_vec.iter().cycle().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/iter_skip_next.rs:54:13
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--> $DIR/iter_skip_next.rs:20:13
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LL | let _ = (1..10).skip(10).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/iter_skip_next.rs:55:14
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--> $DIR/iter_skip_next.rs:21:14
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LL | let _ = &some_vec[..].iter().skip(3).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -178,42 +178,6 @@ impl HasIter {
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}
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}
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/// Struct to generate false positive for Iterator-based lints
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#[derive(Copy, Clone)]
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struct IteratorFalsePositives {
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foo: u32,
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}
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impl IteratorFalsePositives {
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fn filter(self) -> IteratorFalsePositives {
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self
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}
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fn next(self) -> IteratorFalsePositives {
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self
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}
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fn find(self) -> Option<u32> {
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Some(self.foo)
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}
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fn position(self) -> Option<u32> {
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Some(self.foo)
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}
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fn rposition(self) -> Option<u32> {
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Some(self.foo)
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}
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fn nth(self, n: usize) -> Option<u32> {
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Some(self.foo)
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}
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fn skip(self, _: usize) -> IteratorFalsePositives {
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self
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}
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}
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/// Checks implementation of `FILTER_NEXT` lint
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fn filter_next() {
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let v = vec![3, 2, 1, 0, -1, -2, -3];
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@ -144,7 +144,7 @@ LL | });
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:222:13
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--> $DIR/methods.rs:186:13
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LL | let _ = v.iter().filter(|&x| *x < 0).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -153,7 +153,7 @@ LL | let _ = v.iter().filter(|&x| *x < 0).next();
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= note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`
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error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
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--> $DIR/methods.rs:225:13
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--> $DIR/methods.rs:189:13
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LL | let _ = v.iter().filter(|&x| {
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| _____________^
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@ -163,7 +163,7 @@ LL | | ).next();
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| |___________________________^
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:240:13
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--> $DIR/methods.rs:204:13
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LL | let _ = v.iter().find(|&x| *x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -172,7 +172,7 @@ LL | let _ = v.iter().find(|&x| *x < 0).is_some();
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= note: replace `find(|&x| *x < 0).is_some()` with `any(|&x| *x < 0)`
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error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:243:13
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--> $DIR/methods.rs:207:13
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LL | let _ = v.iter().find(|&x| {
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| _____________^
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@ -182,7 +182,7 @@ LL | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:249:13
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--> $DIR/methods.rs:213:13
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LL | let _ = v.iter().position(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -190,7 +190,7 @@ LL | let _ = v.iter().position(|&x| x < 0).is_some();
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= note: replace `position(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:252:13
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--> $DIR/methods.rs:216:13
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LL | let _ = v.iter().position(|&x| {
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| _____________^
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@ -200,7 +200,7 @@ LL | | ).is_some();
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| |______________________________^
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:258:13
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--> $DIR/methods.rs:222:13
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LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -208,7 +208,7 @@ LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
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= note: replace `rposition(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
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error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
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--> $DIR/methods.rs:261:13
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--> $DIR/methods.rs:225:13
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LL | let _ = v.iter().rposition(|&x| {
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| _____________^
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@ -218,7 +218,7 @@ LL | | ).is_some();
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| |______________________________^
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:296:22
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--> $DIR/methods.rs:260:22
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LL | with_constructor.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
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@ -226,73 +226,73 @@ LL | with_constructor.unwrap_or(make());
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= note: `-D clippy::or-fun-call` implied by `-D warnings`
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error: use of `unwrap_or` followed by a call to `new`
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--> $DIR/methods.rs:299:5
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--> $DIR/methods.rs:263:5
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LL | with_new.unwrap_or(Vec::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:302:21
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--> $DIR/methods.rs:266:21
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LL | with_const_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:305:14
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--> $DIR/methods.rs:269:14
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LL | with_err.unwrap_or(make());
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:308:19
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--> $DIR/methods.rs:272:19
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LL | with_err_args.unwrap_or(Vec::with_capacity(12));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:311:5
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--> $DIR/methods.rs:275:5
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LL | with_default_trait.unwrap_or(Default::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
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error: use of `unwrap_or` followed by a call to `default`
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--> $DIR/methods.rs:314:5
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--> $DIR/methods.rs:278:5
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LL | with_default_type.unwrap_or(u64::default());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:317:14
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--> $DIR/methods.rs:281:14
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LL | with_vec.unwrap_or(vec![]);
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| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:322:21
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--> $DIR/methods.rs:286:21
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LL | without_default.unwrap_or(Foo::new());
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| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:325:19
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--> $DIR/methods.rs:289:19
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LL | map.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `or_insert` followed by a function call
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--> $DIR/methods.rs:328:21
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--> $DIR/methods.rs:292:21
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LL | btree.entry(42).or_insert(String::new());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
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error: use of `unwrap_or` followed by a function call
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--> $DIR/methods.rs:331:21
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--> $DIR/methods.rs:295:21
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LL | let _ = stringy.unwrap_or("".to_owned());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
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error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:342:23
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--> $DIR/methods.rs:306:23
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LL | let bad_vec = some_vec.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-nth` implied by `-D warnings`
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:343:26
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--> $DIR/methods.rs:307:26
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LL | let bad_slice = &some_vec[..].iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:344:31
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--> $DIR/methods.rs:308:31
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LL | let bad_boxed_slice = boxed_slice.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:345:29
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--> $DIR/methods.rs:309:29
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LL | let bad_vec_deque = some_vec_deque.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:350:23
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--> $DIR/methods.rs:314:23
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LL | let bad_vec = some_vec.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:353:26
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--> $DIR/methods.rs:317:26
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LL | let bad_slice = &some_vec[..].iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:356:29
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--> $DIR/methods.rs:320:29
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LL | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
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--> $DIR/methods.rs:368:13
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--> $DIR/methods.rs:332:13
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LL | let _ = opt.unwrap();
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| ^^^^^^^^^^^^
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