Auto merge of rust-lang#9069 - flip1995:rustup, r=flip1995

Rustup

r? `@ghost`

changelog: none

Author: bors

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.63"
+version = "0.1.64"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_dev/src/bless.rs

@@ -4,12 +4,12 @@
 use crate::cargo_clippy_path;
 use std::ffi::OsStr;
 use std::fs;
-use std::lazy::SyncLazy;
 use std::path::{Path, PathBuf};
+use std::sync::LazyLock;
 use walkdir::{DirEntry, WalkDir};
 
-static CLIPPY_BUILD_TIME: SyncLazy<Option<std::time::SystemTime>> =
-    SyncLazy::new(|| cargo_clippy_path().metadata().ok()?.modified().ok());
+static CLIPPY_BUILD_TIME: LazyLock<Option<std::time::SystemTime>> =
+    LazyLock::new(|| cargo_clippy_path().metadata().ok()?.modified().ok());
 
 /// # Panics
 ///

clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.63"
+version = "0.1.64"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_lints/src/methods/map_flatten.rs

@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::span_lint_and_sugg_for_edges;
+use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::is_trait_method;
 use clippy_utils::source::snippet_with_applicability;
 use clippy_utils::ty::is_type_diagnostic_item;
@@ -14,17 +14,17 @@ use super::MAP_FLATTEN;
 pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, recv: &Expr<'_>, map_arg: &Expr<'_>, map_span: Span) {
     if let Some((caller_ty_name, method_to_use)) = try_get_caller_ty_name_and_method_name(cx, expr, recv, map_arg) {
         let mut applicability = Applicability::MachineApplicable;
-        let help_msgs = [
-            &format!("try replacing `map` with `{}`", method_to_use),
-            "and remove the `.flatten()`",
-        ];
+
         let closure_snippet = snippet_with_applicability(cx, map_arg.span, "..", &mut applicability);
-        span_lint_and_sugg_for_edges(
+        span_lint_and_sugg(
             cx,
             MAP_FLATTEN,
             expr.span.with_lo(map_span.lo()),
             &format!("called `map(..).flatten()` on `{}`", caller_ty_name),
-            &help_msgs,
+            &format!(
+                "try replacing `map` with `{}` and remove the `.flatten()`",
+                method_to_use
+            ),
             format!("{}({})", method_to_use, closure_snippet),
             applicability,
         );

clippy_lints/src/methods/or_fun_call.rs

@@ -4,7 +4,6 @@ use clippy_utils::source::{snippet, snippet_with_applicability, snippet_with_mac
 use clippy_utils::ty::{implements_trait, match_type};
 use clippy_utils::{contains_return, is_trait_item, last_path_segment, paths};
 use if_chain::if_chain;
-use rustc_errors::emitter::MAX_SUGGESTION_HIGHLIGHT_LINES;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
@@ -33,7 +32,6 @@ pub(super) fn check<'tcx>(
         arg: &hir::Expr<'_>,
         or_has_args: bool,
         span: Span,
-        method_span: Span,
     ) -> bool {
         let is_default_default = || is_trait_item(cx, fun, sym::Default);
 
@@ -56,19 +54,14 @@ pub(super) fn check<'tcx>(
             then {
                 let mut applicability = Applicability::MachineApplicable;
                 let hint = "unwrap_or_default()";
-                let mut sugg_span = span;
+                let sugg_span = span;
 
-                let mut sugg: String = format!(
+                let sugg: String = format!(
                     "{}.{}",
                     snippet_with_applicability(cx, self_expr.span, "..", &mut applicability),
                     hint
                 );
 
-                if sugg.lines().count() > MAX_SUGGESTION_HIGHLIGHT_LINES {
-                    sugg_span = method_span.with_hi(span.hi());
-                    sugg = hint.to_string();
-                }
-
                 span_lint_and_sugg(
                     cx,
                     OR_FUN_CALL,
@@ -178,7 +171,7 @@ pub(super) fn check<'tcx>(
         match inner_arg.kind {
             hir::ExprKind::Call(fun, or_args) => {
                 let or_has_args = !or_args.is_empty();
-                if !check_unwrap_or_default(cx, name, fun, self_arg, arg, or_has_args, expr.span, method_span) {
+                if !check_unwrap_or_default(cx, name, fun, self_arg, arg, or_has_args, expr.span) {
                     let fun_span = if or_has_args { None } else { Some(fun.span) };
                     check_general_case(cx, name, method_span, self_arg, arg, expr.span, fun_span);
                 }

clippy_lints/src/utils/internal_lints/metadata_collector.rs

@@ -104,15 +104,14 @@ macro_rules! RENAME_VALUE_TEMPLATE {
     };
 }
 
-const LINT_EMISSION_FUNCTIONS: [&[&str]; 8] = [
+const LINT_EMISSION_FUNCTIONS: [&[&str]; 7] = [
     &["clippy_utils", "diagnostics", "span_lint"],
     &["clippy_utils", "diagnostics", "span_lint_and_help"],
     &["clippy_utils", "diagnostics", "span_lint_and_note"],
     &["clippy_utils", "diagnostics", "span_lint_hir"],
     &["clippy_utils", "diagnostics", "span_lint_and_sugg"],
     &["clippy_utils", "diagnostics", "span_lint_and_then"],
     &["clippy_utils", "diagnostics", "span_lint_hir_and_then"],
-    &["clippy_utils", "diagnostics", "span_lint_and_sugg_for_edges"],
 ];
 const SUGGESTION_DIAGNOSTIC_BUILDER_METHODS: [(&str, bool); 9] = [
     ("span_suggestion", false),

clippy_utils/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_utils"
-version = "0.1.63"
+version = "0.1.64"
 edition = "2021"
 publish = false
 

clippy_utils/src/diagnostics.rs

@@ -8,7 +8,7 @@
 //! Thank you!
 //! ~The `INTERNAL_METADATA_COLLECTOR` lint
 
-use rustc_errors::{emitter::MAX_SUGGESTION_HIGHLIGHT_LINES, Applicability, Diagnostic, MultiSpan};
+use rustc_errors::{Applicability, Diagnostic, MultiSpan};
 use rustc_hir::HirId;
 use rustc_lint::{LateContext, Lint, LintContext};
 use rustc_span::source_map::Span;
@@ -213,93 +213,6 @@ pub fn span_lint_and_sugg<'a, T: LintContext>(
     });
 }
 
-/// Like [`span_lint_and_sugg`] with a focus on the edges. The output will either
-/// emit single span or multispan suggestion depending on the number of its lines.
-///
-/// If the given suggestion string has more lines than the maximum display length defined by
-/// [`MAX_SUGGESTION_HIGHLIGHT_LINES`][`rustc_errors::emitter::MAX_SUGGESTION_HIGHLIGHT_LINES`],
-/// this function will split the suggestion and span to showcase the change for the top and
-/// bottom edge of the code. For normal suggestions, in one display window, the help message
-/// will be combined with a colon.
-///
-/// Multipart suggestions like the one being created here currently cannot be
-/// applied by rustfix (See [rustfix#141](https://github.com/rust-lang/rustfix/issues/141)).
-/// Testing rustfix with this lint emission function might require a file with
-/// suggestions that can be fixed and those that can't. See
-/// [clippy#8520](https://github.com/rust-lang/rust-clippy/pull/8520/files) for
-/// an example and of this.
-///
-/// # Example for a long suggestion
-///
-/// ```text
-/// error: called `map(..).flatten()` on `Option`
-///   --> $DIR/map_flatten.rs:8:10
-///    |
-/// LL |           .map(|x| {
-///    |  __________^
-/// LL | |             if x <= 5 {
-/// LL | |                 Some(x)
-/// LL | |             } else {
-/// ...  |
-/// LL | |         })
-/// LL | |         .flatten();
-///    | |__________________^
-///    |
-///   = note: `-D clippy::map-flatten` implied by `-D warnings`
-/// help: try replacing `map` with `and_then`
-///    |
-/// LL ~         .and_then(|x| {
-/// LL +             if x <= 5 {
-/// LL +                 Some(x)
-///    |
-/// help: and remove the `.flatten()`
-///    |
-/// LL +                 None
-/// LL +             }
-/// LL ~         });
-///    |
-/// ```
-pub fn span_lint_and_sugg_for_edges(
-    cx: &LateContext<'_>,
-    lint: &'static Lint,
-    sp: Span,
-    msg: &str,
-    helps: &[&str; 2],
-    sugg: String,
-    applicability: Applicability,
-) {
-    span_lint_and_then(cx, lint, sp, msg, |diag| {
-        let sugg_lines_count = sugg.lines().count();
-        if sugg_lines_count > MAX_SUGGESTION_HIGHLIGHT_LINES {
-            let sm = cx.sess().source_map();
-            if let (Ok(line_upper), Ok(line_bottom)) = (sm.lookup_line(sp.lo()), sm.lookup_line(sp.hi())) {
-                let split_idx = MAX_SUGGESTION_HIGHLIGHT_LINES / 2;
-                let span_upper = sm.span_until_char(
-                    sp.with_hi(line_upper.sf.lines(|lines| lines[line_upper.line + split_idx])),
-                    '\n',
-                );
-                let span_bottom = sp.with_lo(line_bottom.sf.lines(|lines| lines[line_bottom.line - split_idx]));
-
-                let sugg_lines_vec = sugg.lines().collect::<Vec<&str>>();
-                let sugg_upper = sugg_lines_vec[..split_idx].join("\n");
-                let sugg_bottom = sugg_lines_vec[sugg_lines_count - split_idx..].join("\n");
-
-                diag.span_suggestion(span_upper, helps[0], sugg_upper, applicability);
-                diag.span_suggestion(span_bottom, helps[1], sugg_bottom, applicability);
-
-                return;
-            }
-        }
-        diag.span_suggestion_with_style(
-            sp,
-            &helps.join(", "),
-            sugg,
-            applicability,
-            rustc_errors::SuggestionStyle::ShowAlways,
-        );
-    });
-}
-
 /// Create a suggestion made from several `span → replacement`.
 ///
 /// Note: in the JSON format (used by `compiletest_rs`), the help message will

clippy_utils/src/hir_utils.rs

@@ -16,6 +16,10 @@ use rustc_middle::ty::TypeckResults;
 use rustc_span::{sym, Symbol};
 use std::hash::{Hash, Hasher};
 
+/// Callback that is called when two expressions are not equal in the sense of `SpanlessEq`, but
+/// other conditions would make them equal.
+type SpanlessEqCallback<'a> = dyn FnMut(&Expr<'_>, &Expr<'_>) -> bool + 'a;
+
 /// Type used to check whether two ast are the same. This is different from the
 /// operator `==` on ast types as this operator would compare true equality with
 /// ID and span.
@@ -26,7 +30,7 @@ pub struct SpanlessEq<'a, 'tcx> {
     cx: &'a LateContext<'tcx>,
     maybe_typeck_results: Option<(&'tcx TypeckResults<'tcx>, &'tcx TypeckResults<'tcx>)>,
     allow_side_effects: bool,
-    expr_fallback: Option<Box<dyn FnMut(&Expr<'_>, &Expr<'_>) -> bool + 'a>>,
+    expr_fallback: Option<Box<SpanlessEqCallback<'a>>>,
 }
 
 impl<'a, 'tcx> SpanlessEq<'a, 'tcx> {

clippy_utils/src/lib.rs

@@ -64,7 +64,7 @@ pub use self::hir_utils::{
 
 use std::collections::hash_map::Entry;
 use std::hash::BuildHasherDefault;
-use std::lazy::SyncOnceCell;
+use std::sync::OnceLock;
 use std::sync::{Mutex, MutexGuard};
 
 use if_chain::if_chain;
@@ -2099,7 +2099,7 @@ pub fn is_hir_ty_cfg_dependant(cx: &LateContext<'_>, ty: &hir::Ty<'_>) -> bool {
     false
 }
 
-static TEST_ITEM_NAMES_CACHE: SyncOnceCell<Mutex<FxHashMap<LocalDefId, Vec<Symbol>>>> = SyncOnceCell::new();
+static TEST_ITEM_NAMES_CACHE: OnceLock<Mutex<FxHashMap<LocalDefId, Vec<Symbol>>>> = OnceLock::new();
 
 fn with_test_item_names<'tcx>(tcx: TyCtxt<'tcx>, module: LocalDefId, f: impl Fn(&[Symbol]) -> bool) -> bool {
     let cache = TEST_ITEM_NAMES_CACHE.get_or_init(|| Mutex::new(FxHashMap::default()));