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Rename if_let_redundant_pattern_matching to redundant_pattern_matching

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Also, making the old one deprecated
This commit is contained in:
CYBAI 2018-10-10 23:13:53 +08:00
parent 3b7c88888b
commit 66ae3b1249
8 changed files with 43 additions and 23 deletions
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1
CHANGELOG.md
View file

@ -816,6 +816,7 @@ All notable changes to this project will be documented in this file.
[`redundant_closure_call`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_closure_call
[`redundant_field_names`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_field_names
[`redundant_pattern`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_pattern
[`redundant_pattern_matching`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[`ref_in_deref`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#ref_in_deref
[`regex_macro`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#regex_macro
[`replace_consts`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#replace_consts

10
clippy_lints/src/deprecated_lints.rs
View file

@ -102,3 +102,13 @@ declare_deprecated_lint! {
pub ASSIGN_OPS,
"using compound assignment operators (e.g. `+=`) is harmless"
}
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** The original rule will only lint for `if let`. After
/// making it support to lint `match`, naming as `if let` is not suitable for it.
/// So, this lint is deprecated.
declare_deprecated_lint! {
pub IF_LET_REDUNDANT_PATTERN_MATCHING,
"this lint has been changed to redundant_pattern_matching"
}

12
clippy_lints/src/lib.rs
View file

@ -126,7 +126,6 @@ pub mod formatting;
pub mod functions;
pub mod identity_conversion;
pub mod identity_op;
pub mod if_let_redundant_pattern_matching;
pub mod if_not_else;
pub mod indexing_slicing;
pub mod infallible_destructuring_match;
@ -180,6 +179,7 @@ pub mod ptr_offset_with_cast;
pub mod question_mark;
pub mod ranges;
pub mod redundant_field_names;
pub mod redundant_pattern_matching;
pub mod reference;
pub mod regex;
pub mod replace_consts;
@ -303,6 +303,10 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
"assign_ops",
"using compound assignment operators (e.g. `+=`) is harmless",
);
store.register_removed(
"if_let_redundant_pattern_matching",
"this lint has been changed to redundant_pattern_matching",
);
// end deprecated lints, do not remove this comment, it’s used in `update_lints`
reg.register_late_lint_pass(box serde_api::Serde);
@ -402,7 +406,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
reg.register_late_lint_pass(box missing_inline::MissingInline);
reg.register_late_lint_pass(box ok_if_let::Pass);
reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
reg.register_late_lint_pass(box redundant_pattern_matching::Pass);
reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
reg.register_early_lint_pass(box reference::Pass);
reg.register_early_lint_pass(box reference::DerefPass);
@ -565,7 +569,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
functions::TOO_MANY_ARGUMENTS,
identity_conversion::IDENTITY_CONVERSION,
identity_op::IDENTITY_OP,
if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
indexing_slicing::OUT_OF_BOUNDS_INDEXING,
infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
infinite_iter::INFINITE_ITER,
@ -680,6 +683,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
ranges::RANGE_PLUS_ONE,
ranges::RANGE_ZIP_WITH_LEN,
redundant_field_names::REDUNDANT_FIELD_NAMES,
redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
reference::DEREF_ADDROF,
reference::REF_IN_DEREF,
regex::INVALID_REGEX,
@ -749,7 +753,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
excessive_precision::EXCESSIVE_PRECISION,
formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
formatting::SUSPICIOUS_ELSE_FORMATTING,
if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
len_zero::LEN_WITHOUT_IS_EMPTY,
len_zero::LEN_ZERO,
@ -800,6 +803,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
ptr::PTR_ARG,
question_mark::QUESTION_MARK,
redundant_field_names::REDUNDANT_FIELD_NAMES,
redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
regex::REGEX_MACRO,
regex::TRIVIAL_REGEX,
returns::LET_AND_RETURN,

13
clippy_lints/src/if_let_redundant_pattern_matching.rs → clippy_lints/src/redundant_pattern_matching.rs
View file

@ -31,6 +31,10 @@ use crate::rustc_errors::Applicability;
/// if let Err(_) = Err::<i32, i32>(42) {}
/// if let None = None::<()> {}
/// if let Some(_) = Some(42) {}
/// match Ok::<i32, i32>(42) {
/// Ok(_) => true,
/// Err(_) => false,
/// };
/// ```
///
/// The more idiomatic use would be:
@ -40,10 +44,11 @@ use crate::rustc_errors::Applicability;
/// if Err::<i32, i32>(42).is_err() {}
/// if None::<()>.is_none() {}
/// if Some(42).is_some() {}
/// Ok::<i32, i32>(42).is_ok();
/// ```
///
declare_clippy_lint! {
pub IF_LET_REDUNDANT_PATTERN_MATCHING,
pub REDUNDANT_PATTERN_MATCHING,
style,
"use the proper utility function avoiding an `if let`"
}
@ -53,7 +58,7 @@ pub struct Pass;
impl LintPass for Pass {
fn get_lints(&self) -> LintArray {
lint_array!(IF_LET_REDUNDANT_PATTERN_MATCHING)
lint_array!(REDUNDANT_PATTERN_MATCHING)
}
}
@ -101,7 +106,7 @@ fn find_sugg_for_if_let<'a, 'tcx>(
span_lint_and_then(
cx,
IF_LET_REDUNDANT_PATTERN_MATCHING,
REDUNDANT_PATTERN_MATCHING,
arms[0].pats[0].span,
&format!("redundant pattern matching, consider using `{}`", good_method),
|db| {
@ -174,7 +179,7 @@ fn find_sugg_for_match<'a, 'tcx>(
if let Some(good_method) = found_good_method {
span_lint_and_then(
cx,
IF_LET_REDUNDANT_PATTERN_MATCHING,
REDUNDANT_PATTERN_MATCHING,
expr.span,
&format!("redundant pattern matching, consider using `{}`", good_method),
|db| {

2
tests/ui/matches.rs
View file

@ -13,7 +13,7 @@
#![warn(clippy::all)]
#![allow(unused, clippy::if_let_redundant_pattern_matching)]
#![allow(unused, clippy::redundant_pattern_matching)]
#![warn(clippy::single_match_else, clippy::match_same_arms)]
enum ExprNode {

2
tests/ui/needless_pass_by_value.rs
View file

@ -11,7 +11,7 @@
#![warn(clippy::needless_pass_by_value)]
#![allow(dead_code, clippy::single_match, clippy::if_let_redundant_pattern_matching, clippy::many_single_char_names, clippy::option_option)]
#![allow(dead_code, clippy::single_match, clippy::redundant_pattern_matching, clippy::many_single_char_names, clippy::option_option)]
use std::borrow::Borrow;
use std::convert::AsRef;

2
tests/ui/if_let_redundant_pattern_matching.rs → tests/ui/redundant_pattern_matching.rs
View file

@ -12,7 +12,7 @@
#![warn(clippy::all)]
#![warn(clippy::if_let_redundant_pattern_matching)]
#![warn(clippy::redundant_pattern_matching)]
fn main() {

22
tests/ui/if_let_redundant_pattern_matching.stderr → tests/ui/redundant_pattern_matching.stderr
View file

@ -1,13 +1,13 @@
error: redundant pattern matching, consider using `is_ok()`
--> $DIR/if_let_redundant_pattern_matching.rs:19:12
--> $DIR/redundant_pattern_matching.rs:19:12
|
19 | if let Ok(_) = Ok::<i32, i32>(42) {}
| -------^^^^^------------------------ help: try this: `if Ok::<i32, i32>(42).is_ok()`
|
= note: `-D clippy::if-let-redundant-pattern-matching` implied by `-D warnings`
= note: `-D clippy::redundant-pattern-matching` implied by `-D warnings`
error: redundant pattern matching, consider using `is_err()`
--> $DIR/if_let_redundant_pattern_matching.rs:21:12
--> $DIR/redundant_pattern_matching.rs:21:12
|
21 | if let Err(_) = Err::<i32, i32>(42) {
| _____- ^^^^^^
@ -15,7 +15,7 @@ error: redundant pattern matching, consider using `is_err()`
| |_____- help: try this: `if Err::<i32, i32>(42).is_err()`
error: redundant pattern matching, consider using `is_none()`
--> $DIR/if_let_redundant_pattern_matching.rs:24:12
--> $DIR/redundant_pattern_matching.rs:24:12
|
24 | if let None = None::<()> {
| _____- ^^^^
@ -23,7 +23,7 @@ error: redundant pattern matching, consider using `is_none()`
| |_____- help: try this: `if None::<()>.is_none()`
error: redundant pattern matching, consider using `is_some()`
--> $DIR/if_let_redundant_pattern_matching.rs:27:12
--> $DIR/redundant_pattern_matching.rs:27:12
|
27 | if let Some(_) = Some(42) {
| _____- ^^^^^^^
@ -31,7 +31,7 @@ error: redundant pattern matching, consider using `is_some()`
| |_____- help: try this: `if Some(42).is_some()`
error: redundant pattern matching, consider using `is_ok()`
--> $DIR/if_let_redundant_pattern_matching.rs:46:5
--> $DIR/redundant_pattern_matching.rs:46:5
|
46 | / match Ok::<i32, i32>(42) {
47 | | Ok(_) => true,
@ -40,7 +40,7 @@ error: redundant pattern matching, consider using `is_ok()`
| |_____^ help: try this: `Ok::<i32, i32>(42).is_ok()`
error: redundant pattern matching, consider using `is_err()`
--> $DIR/if_let_redundant_pattern_matching.rs:51:5
--> $DIR/redundant_pattern_matching.rs:51:5
|
51 | / match Ok::<i32, i32>(42) {
52 | | Ok(_) => false,
@ -49,7 +49,7 @@ error: redundant pattern matching, consider using `is_err()`
| |_____^ help: try this: `Ok::<i32, i32>(42).is_err()`
error: redundant pattern matching, consider using `is_err()`
--> $DIR/if_let_redundant_pattern_matching.rs:56:5
--> $DIR/redundant_pattern_matching.rs:56:5
|
56 | / match Err::<i32, i32>(42) {
57 | | Ok(_) => false,
@ -58,7 +58,7 @@ error: redundant pattern matching, consider using `is_err()`
| |_____^ help: try this: `Err::<i32, i32>(42).is_err()`
error: redundant pattern matching, consider using `is_ok()`
--> $DIR/if_let_redundant_pattern_matching.rs:61:5
--> $DIR/redundant_pattern_matching.rs:61:5
|
61 | / match Err::<i32, i32>(42) {
62 | | Ok(_) => true,
@ -67,7 +67,7 @@ error: redundant pattern matching, consider using `is_ok()`
| |_____^ help: try this: `Err::<i32, i32>(42).is_ok()`
error: redundant pattern matching, consider using `is_some()`
--> $DIR/if_let_redundant_pattern_matching.rs:66:5
--> $DIR/redundant_pattern_matching.rs:66:5
|
66 | / match Some(42) {
67 | | Some(_) => true,
@ -76,7 +76,7 @@ error: redundant pattern matching, consider using `is_some()`
| |_____^ help: try this: `Some(42).is_some()`
error: redundant pattern matching, consider using `is_none()`
--> $DIR/if_let_redundant_pattern_matching.rs:71:5
--> $DIR/redundant_pattern_matching.rs:71:5
|
71 | / match None::<()> {
72 | | Some(_) => false,