search_is_some: rename to search_is_some_or_none

Due to enhancements added to this lint in previous commit.
rust-lang · Mar 20, 2021 · a65b0d5 · a65b0d5
1 parent 21318e8
commit a65b0d5
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Showing 8 changed files with 71 additions and 65 deletions.
diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
@@ -808,7 +808,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         &methods::OPTION_MAP_OR_NONE,
         &methods::OR_FUN_CALL,
         &methods::RESULT_MAP_OR_INTO_OPTION,
-        &methods::SEARCH_IS_SOME,
+        &methods::SEARCH_IS_SOME_OR_NONE,
         &methods::SHOULD_IMPLEMENT_TRAIT,
         &methods::SINGLE_CHAR_ADD_STR,
         &methods::SINGLE_CHAR_PATTERN,
@@ -1600,7 +1600,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&methods::OPTION_MAP_OR_NONE),
         LintId::of(&methods::OR_FUN_CALL),
         LintId::of(&methods::RESULT_MAP_OR_INTO_OPTION),
-        LintId::of(&methods::SEARCH_IS_SOME),
+        LintId::of(&methods::SEARCH_IS_SOME_OR_NONE),
         LintId::of(&methods::SHOULD_IMPLEMENT_TRAIT),
         LintId::of(&methods::SINGLE_CHAR_ADD_STR),
         LintId::of(&methods::SINGLE_CHAR_PATTERN),
@@ -1892,7 +1892,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&methods::MANUAL_FILTER_MAP),
         LintId::of(&methods::MANUAL_FIND_MAP),
         LintId::of(&methods::OPTION_AS_REF_DEREF),
-        LintId::of(&methods::SEARCH_IS_SOME),
+        LintId::of(&methods::SEARCH_IS_SOME_OR_NONE),
         LintId::of(&methods::SKIP_WHILE_NEXT),
         LintId::of(&methods::SUSPICIOUS_MAP),
         LintId::of(&methods::UNNECESSARY_FILTER_MAP),

diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs
@@ -35,7 +35,7 @@ mod option_as_ref_deref;
 mod option_map_or_none;
 mod option_map_unwrap_or;
 mod or_fun_call;
-mod search_is_some;
+mod search_is_some_or_none;
 mod single_char_insert_string;
 mod single_char_pattern;
 mod single_char_push_string;
@@ -588,26 +588,31 @@ declare_clippy_lint! {
 
 declare_clippy_lint! {
     /// **What it does:** Checks for an iterator or string search (such as `find()`,
-    /// `position()`, or `rposition()`) followed by a call to `is_some()`.
+    /// `position()`, or `rposition()`) followed by a call to `is_some()` or `is_none()`.
     ///
-    /// **Why is this bad?** Readability, this can be written more concisely as
-    /// `_.any(_)` or `_.contains(_)`.
+    /// **Why is this bad?** Readability, this can be written more concisely as:
+    /// * `_.any(_)`, or `_.contains(_)` for `is_some()`,
+    /// * `!_.any(_)`, or `!_.contains(_)` for `is_none()`.
     ///
     /// **Known problems:** None.
     ///
     /// **Example:**
     /// ```rust
-    /// # let vec = vec![1];
+    /// let vec = vec![1];
     /// vec.iter().find(|x| **x == 0).is_some();
+    ///
+    /// let _ = "hello world".find("world").is_none();
     /// ```
     /// Could be written as
     /// ```rust
-    /// # let vec = vec![1];
+    /// let vec = vec![1];
     /// vec.iter().any(|x| *x == 0);
+    ///
+    /// let _ = !"hello world".contains("world");
     /// ```
-    pub SEARCH_IS_SOME,
+    pub SEARCH_IS_SOME_OR_NONE,
     complexity,
-    "using an iterator or string search followed by `is_some()`, which is more succinctly expressed as a call to `any()` or `contains()`"
+    "using an iterator or string search followed by `is_some()` or `is_none()`, which is more succinctly expressed as a call to `any()` or `contains()` (with negation in case of `is_none()`)"
 }
 
 declare_clippy_lint! {
@@ -1636,7 +1641,7 @@ impl_lint_pass!(Methods => [
     NEW_RET_NO_SELF,
     SINGLE_CHAR_PATTERN,
     SINGLE_CHAR_ADD_STR,
-    SEARCH_IS_SOME,
+    SEARCH_IS_SOME_OR_NONE,
     FILTER_NEXT,
     SKIP_WHILE_NEXT,
     FILTER_MAP,
@@ -1721,7 +1726,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             ["flat_map", ..] => flat_map_identity::check(cx, expr, arg_lists[0], method_spans[0]),
             ["flatten", "map"] => map_flatten::check(cx, expr, arg_lists[1]),
             [option_check_method, "find"] if "is_some" == *option_check_method || "is_none" == *option_check_method => {
-                search_is_some::check(
+                search_is_some_or_none::check(
                     cx,
                     expr,
                     "find",
@@ -1734,7 +1739,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             [option_check_method, "position"]
                 if "is_some" == *option_check_method || "is_none" == *option_check_method =>
             {
-                search_is_some::check(
+                search_is_some_or_none::check(
                     cx,
                     expr,
                     "position",
@@ -1747,7 +1752,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             [option_check_method, "rposition"]
                 if "is_some" == *option_check_method || "is_none" == *option_check_method =>
             {
-                search_is_some::check(
+                search_is_some_or_none::check(
                     cx,
                     expr,
                     "rposition",

diff --git a/clippy_lints/src/methods/search_is_some.rs → ...nts/src/methods/search_is_some_or_none.rs b/clippy_lints/src/methods/search_is_some.rs → ...nts/src/methods/search_is_some_or_none.rs
@@ -11,10 +11,11 @@ use rustc_middle::ty;
 use rustc_span::source_map::Span;
 use rustc_span::symbol::sym;
 
-use super::SEARCH_IS_SOME;
+use super::SEARCH_IS_SOME_OR_NONE;
 
 /// lint searching an Iterator followed by `is_some()`
 /// or calling `find()` on a string followed by `is_some()` or `is_none()`
+#[allow(clippy::too_many_lines)]
 pub(super) fn check<'tcx>(
     cx: &LateContext<'tcx>,
     expr: &'tcx hir::Expr<'_>,
@@ -57,7 +58,7 @@ pub(super) fn check<'tcx>(
                 "is_some" => {
                     span_lint_and_sugg(
                         cx,
-                        SEARCH_IS_SOME,
+                        SEARCH_IS_SOME_OR_NONE,
                         method_span.with_hi(expr.span.hi()),
                         &msg,
                         "use `any()` instead",
@@ -72,7 +73,7 @@ pub(super) fn check<'tcx>(
                     let iter = snippet(cx, search_args[0].span, "..");
                     span_lint_and_sugg(
                         cx,
-                        SEARCH_IS_SOME,
+                        SEARCH_IS_SOME_OR_NONE,
                         expr.span,
                         &msg,
                         "use `!_.any()` instead",
@@ -95,7 +96,7 @@ pub(super) fn check<'tcx>(
                     ""
                 }
             );
-            span_lint_and_help(cx, SEARCH_IS_SOME, expr.span, &msg, None, &hint);
+            span_lint_and_help(cx, SEARCH_IS_SOME_OR_NONE, expr.span, &msg, None, &hint);
         }
     }
     // lint if `find()` is called by `String` or `&str`
@@ -119,7 +120,7 @@ pub(super) fn check<'tcx>(
                         let find_arg = snippet_with_applicability(cx, search_args[1].span, "..", &mut applicability);
                         span_lint_and_sugg(
                             cx,
-                            SEARCH_IS_SOME,
+                            SEARCH_IS_SOME_OR_NONE,
                             method_span.with_hi(expr.span.hi()),
                             &msg,
                             "use `contains()` instead",
@@ -133,7 +134,7 @@ pub(super) fn check<'tcx>(
                         let find_arg = snippet_with_applicability(cx, search_args[1].span, "..", &mut applicability);
                         span_lint_and_sugg(
                             cx,
-                            SEARCH_IS_SOME,
+                            SEARCH_IS_SOME_OR_NONE,
                             expr.span,
                             &msg,
                             "use `!_.contains()` instead",

diff --git a/tests/ui/search_is_some.rs → tests/ui/search_is_some_or_none.rs b/tests/ui/search_is_some.rs → tests/ui/search_is_some_or_none.rs
@@ -1,6 +1,6 @@
 // aux-build:option_helpers.rs
-#![warn(clippy::search_is_some)]
-
+#![warn(clippy::search_is_some_or_none)]
+#![allow(dead_code)]
 extern crate option_helpers;
 use option_helpers::IteratorFalsePositives;
 

diff --git a/tests/ui/search_is_some.stderr → tests/ui/search_is_some_or_none.stderr b/tests/ui/search_is_some.stderr → tests/ui/search_is_some_or_none.stderr
@@ -1,5 +1,5 @@
 error: called `is_some()` after searching an `Iterator` with `find`
-  --> $DIR/search_is_some.rs:14:13
+  --> $DIR/search_is_some_or_none.rs:14:13
    |
 LL |       let _ = v.iter().find(|&x| {
    |  _____________^
@@ -8,11 +8,11 @@ LL | |                           }
 LL | |                    ).is_some();
    | |______________________________^
    |
-   = note: `-D clippy::search-is-some` implied by `-D warnings`
+   = note: `-D clippy::search-is-some-or-none` implied by `-D warnings`
    = help: this is more succinctly expressed by calling `any()`
 
 error: called `is_some()` after searching an `Iterator` with `position`
-  --> $DIR/search_is_some.rs:20:13
+  --> $DIR/search_is_some_or_none.rs:20:13
    |
 LL |       let _ = v.iter().position(|&x| {
    |  _____________^
@@ -24,7 +24,7 @@ LL | |                    ).is_some();
    = help: this is more succinctly expressed by calling `any()`
 
 error: called `is_some()` after searching an `Iterator` with `rposition`
-  --> $DIR/search_is_some.rs:26:13
+  --> $DIR/search_is_some_or_none.rs:26:13
    |
 LL |       let _ = v.iter().rposition(|&x| {
    |  _____________^
@@ -36,7 +36,7 @@ LL | |                    ).is_some();
    = help: this is more succinctly expressed by calling `any()`
 
 error: called `is_none()` after searching an `Iterator` with `find`
-  --> $DIR/search_is_some.rs:48:13
+  --> $DIR/search_is_some_or_none.rs:48:13
    |
 LL |       let _ = v.iter().find(|&x| {
    |  _____________^
@@ -48,7 +48,7 @@ LL | |                    ).is_none();
    = help: this is more succinctly expressed by calling `any()` with negation
 
 error: called `is_none()` after searching an `Iterator` with `position`
-  --> $DIR/search_is_some.rs:54:13
+  --> $DIR/search_is_some_or_none.rs:54:13
    |
 LL |       let _ = v.iter().position(|&x| {
    |  _____________^
@@ -60,7 +60,7 @@ LL | |                    ).is_none();
    = help: this is more succinctly expressed by calling `any()` with negation
 
 error: called `is_none()` after searching an `Iterator` with `rposition`
-  --> $DIR/search_is_some.rs:60:13
+  --> $DIR/search_is_some_or_none.rs:60:13
    |
 LL |       let _ = v.iter().rposition(|&x| {
    |  _____________^

diff --git a/tests/ui/search_is_some_fixable.fixed → ...s/ui/search_is_some_or_none_fixable.fixed b/tests/ui/search_is_some_fixable.fixed → ...s/ui/search_is_some_or_none_fixable.fixed
@@ -1,7 +1,7 @@
 // run-rustfix
 
-#![warn(clippy::search_is_some)]
-
+#![warn(clippy::search_is_some_or_none)]
+#![allow(dead_code)]
 fn main() {
     let v = vec![3, 2, 1, 0, -1, -2, -3];
     let y = &&42;

diff --git a/tests/ui/search_is_some_fixable.rs → tests/ui/search_is_some_or_none_fixable.rs b/tests/ui/search_is_some_fixable.rs → tests/ui/search_is_some_or_none_fixable.rs
@@ -1,7 +1,7 @@
 // run-rustfix
 
-#![warn(clippy::search_is_some)]
-
+#![warn(clippy::search_is_some_or_none)]
+#![allow(dead_code)]
 fn main() {
     let v = vec![3, 2, 1, 0, -1, -2, -3];
     let y = &&42;