Auto merge of rust-lang#74785 - euclio:deprecation-kinds, r=petrochenkov

report kind of deprecated item in message

This is important for fields, which are incorrectly referred to as
"items".

Author: bors

src/librustc_lint/context.rs

@@ -573,7 +573,7 @@ pub trait LintContext: Sized {
                     }
                 }
                 BuiltinLintDiagnostics::DeprecatedMacro(suggestion, span) => {
-                    stability::deprecation_suggestion(&mut db, suggestion, span)
+                    stability::deprecation_suggestion(&mut db, "macro", suggestion, span)
                 }
                 BuiltinLintDiagnostics::UnusedDocComment(span) => {
                     db.span_label(span, "rustdoc does not generate documentation for macro invocations");

src/librustc_middle/middle/stability.rs

@@ -166,29 +166,31 @@ pub fn deprecation_in_effect(is_since_rustc_version: bool, since: Option<&str>)
 
 pub fn deprecation_suggestion(
     diag: &mut DiagnosticBuilder<'_>,
+    kind: &str,
     suggestion: Option<Symbol>,
     span: Span,
 ) {
     if let Some(suggestion) = suggestion {
         diag.span_suggestion(
             span,
-            "replace the use of the deprecated item",
+            &format!("replace the use of the deprecated {}", kind),
             suggestion.to_string(),
             Applicability::MachineApplicable,
         );
     }
 }
 
-pub fn deprecation_message(depr: &Deprecation, path: &str) -> (String, &'static Lint) {
+pub fn deprecation_message(depr: &Deprecation, kind: &str, path: &str) -> (String, &'static Lint) {
     let (message, lint) = if deprecation_in_effect(
         depr.is_since_rustc_version,
         depr.since.map(Symbol::as_str).as_deref(),
     ) {
-        (format!("use of deprecated item '{}'", path), DEPRECATED)
+        (format!("use of deprecated {} `{}`", kind, path), DEPRECATED)
     } else {
         (
             format!(
-                "use of item '{}' that will be deprecated in future version {}",
+                "use of {} `{}` that will be deprecated in future version {}",
+                kind,
                 path,
                 depr.since.unwrap()
             ),
@@ -224,6 +226,7 @@ fn late_report_deprecation(
     lint: &'static Lint,
     span: Span,
     hir_id: HirId,
+    def_id: DefId,
 ) {
     if span.in_derive_expansion() {
         return;
@@ -232,7 +235,8 @@ fn late_report_deprecation(
     tcx.struct_span_lint_hir(lint, hir_id, span, |lint| {
         let mut diag = lint.build(message);
         if let hir::Node::Expr(_) = tcx.hir().get(hir_id) {
-            deprecation_suggestion(&mut diag, suggestion, span);
+            let kind = tcx.def_kind(def_id).descr(def_id);
+            deprecation_suggestion(&mut diag, kind, suggestion, span);
         }
         diag.emit()
     });
@@ -304,15 +308,17 @@ impl<'tcx> TyCtxt<'tcx> {
                 // #[rustc_deprecated] however wants to emit down the whole
                 // hierarchy.
                 if !skip || depr_entry.attr.is_since_rustc_version {
-                    let (message, lint) =
-                        deprecation_message(&depr_entry.attr, &self.def_path_str(def_id));
+                    let path = &self.def_path_str(def_id);
+                    let kind = self.def_kind(def_id).descr(def_id);
+                    let (message, lint) = deprecation_message(&depr_entry.attr, kind, path);
                     late_report_deprecation(
                         self,
                         &message,
                         depr_entry.attr.suggestion,
                         lint,
                         span,
                         id,
+                        def_id,
                     );
                 }
             };

src/librustc_resolve/macros.rs

@@ -1020,7 +1020,7 @@ impl<'a> Resolver<'a> {
         }
         if let Some(depr) = &ext.deprecation {
             let path = pprust::path_to_string(&path);
-            let (message, lint) = stability::deprecation_message(depr, &path);
+            let (message, lint) = stability::deprecation_message(depr, "macro", &path);
             stability::early_report_deprecation(
                 &mut self.lint_buffer,
                 &message,

src/test/ui/conditional-compilation/cfg-attr-multi-true.rs

@@ -9,13 +9,13 @@
 #[cfg_attr(all(), deprecated, must_use)]
 struct MustUseDeprecated {}
 
-impl MustUseDeprecated { //~ warning: use of deprecated item
-    fn new() -> MustUseDeprecated { //~ warning: use of deprecated item
-        MustUseDeprecated {} //~ warning: use of deprecated item
+impl MustUseDeprecated { //~ warning: use of deprecated
+    fn new() -> MustUseDeprecated { //~ warning: use of deprecated
+        MustUseDeprecated {} //~ warning: use of deprecated
     }
 }
 
 fn main() {
-    MustUseDeprecated::new(); //~ warning: use of deprecated item
+    MustUseDeprecated::new(); //~ warning: use of deprecated
     //~| warning: unused `MustUseDeprecated` that must be used
 }

src/test/ui/conditional-compilation/cfg-attr-multi-true.stderr

@@ -1,24 +1,24 @@
-warning: use of deprecated item 'MustUseDeprecated'
+warning: use of deprecated struct `MustUseDeprecated`
   --> $DIR/cfg-attr-multi-true.rs:12:6
    |
 LL | impl MustUseDeprecated {
    |      ^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(deprecated)]` on by default
 
-warning: use of deprecated item 'MustUseDeprecated'
+warning: use of deprecated struct `MustUseDeprecated`
   --> $DIR/cfg-attr-multi-true.rs:19:5
    |
 LL |     MustUseDeprecated::new();
    |     ^^^^^^^^^^^^^^^^^^^^^^
 
-warning: use of deprecated item 'MustUseDeprecated'
+warning: use of deprecated struct `MustUseDeprecated`
   --> $DIR/cfg-attr-multi-true.rs:13:17
    |
 LL |     fn new() -> MustUseDeprecated {
    |                 ^^^^^^^^^^^^^^^^^
 
-warning: use of deprecated item 'MustUseDeprecated'
+warning: use of deprecated struct `MustUseDeprecated`
   --> $DIR/cfg-attr-multi-true.rs:14:9
    |
 LL |         MustUseDeprecated {}

src/test/ui/deprecation/atomic_initializers.fixed

@@ -6,6 +6,6 @@ use std::sync::atomic::{AtomicIsize, ATOMIC_ISIZE_INIT};
 
 #[allow(dead_code)]
 static FOO: AtomicIsize = AtomicIsize::new(0);
-//~^ WARN use of deprecated item
+//~^ WARN use of deprecated constant
 
 fn main() {}

src/test/ui/deprecation/atomic_initializers.rs

@@ -6,6 +6,6 @@ use std::sync::atomic::{AtomicIsize, ATOMIC_ISIZE_INIT};
 
 #[allow(dead_code)]
 static FOO: AtomicIsize = ATOMIC_ISIZE_INIT;
-//~^ WARN use of deprecated item
+//~^ WARN use of deprecated constant
 
 fn main() {}

src/test/ui/deprecation/atomic_initializers.stderr

@@ -1,8 +1,8 @@
-warning: use of deprecated item 'std::sync::atomic::ATOMIC_ISIZE_INIT': the `new` function is now preferred
+warning: use of deprecated constant `std::sync::atomic::ATOMIC_ISIZE_INIT`: the `new` function is now preferred
   --> $DIR/atomic_initializers.rs:8:27
    |
 LL | static FOO: AtomicIsize = ATOMIC_ISIZE_INIT;
-   |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `AtomicIsize::new(0)`
+   |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicIsize::new(0)`
    |
    = note: `#[warn(deprecated)]` on by default
 

src/test/ui/deprecation/deprecation-in-future.rs

@@ -7,7 +7,7 @@ pub fn deprecated_future() {}
 
 fn test() {
     deprecated_future(); // ok; deprecated_in_future only applies to rustc_deprecated
-    //~^ WARNING use of deprecated item 'deprecated_future': text [deprecated]
+    //~^ WARNING use of deprecated function `deprecated_future`: text [deprecated]
 }
 
 fn main() {}

src/test/ui/deprecation/deprecation-in-future.stderr

@@ -1,4 +1,4 @@
-warning: use of deprecated item 'deprecated_future': text
+warning: use of deprecated function `deprecated_future`: text
   --> $DIR/deprecation-in-future.rs:9:5
    |
 LL |     deprecated_future(); // ok; deprecated_in_future only applies to rustc_deprecated