Rename if_let_redundant_pattern_matching to redundant_pattern_matching

Also, making the old one deprecated

Author: CYBAI

CHANGELOG.md

@@ -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

clippy_lints/src/deprecated_lints.rs

@@ -16,7 +16,7 @@ macro_rules! declare_deprecated_lint {
 
 /// **What it does:** Nothing. This lint has been deprecated.
 ///
-/// **Deprecation reason:** This used to check for `assert!(a == b)` and recommend 
+/// **Deprecation reason:** This used to check for `assert!(a == b)` and recommend
 /// replacement with `assert_eq!(a, b)`, but this is no longer needed after RFC 2011.
 declare_deprecated_lint! {
     pub SHOULD_ASSERT_EQ,
@@ -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"
+}

clippy_lints/src/lib.rs

@@ -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,

clippy_lints/src/if_let_redundant_pattern_matching.rs renamed to clippy_lints/src/redundant_pattern_matching.rs

@@ -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| {

tests/ui/matches.rs

@@ -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 {

tests/ui/needless_pass_by_value.rs

@@ -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;

tests/ui/if_let_redundant_pattern_matching.rs renamed to tests/ui/redundant_pattern_matching.rs

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

tests/ui/if_let_redundant_pattern_matching.stderr renamed to tests/ui/redundant_pattern_matching.stderr

@@ -1,37 +1,37 @@
 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) {
    |  _____-      ^^^^^^
 22 | |     }
    | |_____- 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::<()> {
    |  _____-      ^^^^
 25 | |     }
    | |_____- 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) {
    |  _____-      ^^^^^^^
 28 | |     }
    | |_____- 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,