Rollup merge of #107467 - WaffleLapkin:uneq, r=oli-obk

Improve enum checks

Some light refactoring.

2 files changed, 32 insertions, 24 deletions

diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index 628e1999921..faeaa548619 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -2113,30 +2113,38 @@ impl EmitterWriter {
                         }
                     }
                     for sugg in suggestions {
-                        if sugg.style == SuggestionStyle::CompletelyHidden {
-                            // do not display this suggestion, it is meant only for tools
-                        } else if sugg.style == SuggestionStyle::HideCodeAlways {
-                            if let Err(e) = self.emit_message_default(
-                                &MultiSpan::new(),
-                                &[(sugg.msg.to_owned(), Style::HeaderMsg)],
-                                args,
-                                &None,
-                                &Level::Help,
-                                max_line_num_len,
-                                true,
-                                None,
-                            ) {
-                                panic!("failed to emit error: {}", e);
+                        match sugg.style {
+                            SuggestionStyle::CompletelyHidden => {
+                                // do not display this suggestion, it is meant only for tools
                             }
-                        } else if let Err(e) = self.emit_suggestion_default(
-                            span,
-                            sugg,
-                            args,
-                            &Level::Help,
-                            max_line_num_len,
-                        ) {
-                            panic!("failed to emit error: {}", e);
-                        };
+                            SuggestionStyle::HideCodeAlways => {
+                                if let Err(e) = self.emit_message_default(
+                                    &MultiSpan::new(),
+                                    &[(sugg.msg.to_owned(), Style::HeaderMsg)],
+                                    args,
+                                    &None,
+                                    &Level::Help,
+                                    max_line_num_len,
+                                    true,
+                                    None,
+                                ) {
+                                    panic!("failed to emit error: {}", e);
+                                }
+                            }
+                            SuggestionStyle::HideCodeInline
+                            | SuggestionStyle::ShowCode
+                            | SuggestionStyle::ShowAlways => {
+                                if let Err(e) = self.emit_suggestion_default(
+                                    span,
+                                    sugg,
+                                    args,
+                                    &Level::Help,
+                                    max_line_num_len,
+                                ) {
+                                    panic!("failed to emit error: {}", e);
+                                }
+                            }
+                        }
                     }
                 }
             }
diff --git a/compiler/rustc_errors/src/styled_buffer.rs b/compiler/rustc_errors/src/styled_buffer.rs
index 9abdb5fc97c..9aa14e1f214 100644
--- a/compiler/rustc_errors/src/styled_buffer.rs
+++ b/compiler/rustc_errors/src/styled_buffer.rs
@@ -142,7 +142,7 @@ impl StyledBuffer {
     pub fn set_style(&mut self, line: usize, col: usize, style: Style, overwrite: bool) {
         if let Some(ref mut line) = self.lines.get_mut(line) {
             if let Some(StyledChar { style: s, .. }) = line.get_mut(col) {
-                if overwrite || *s == Style::NoStyle || *s == Style::Quotation {
+                if overwrite || matches!(s, Style::NoStyle | Style::Quotation) {
                     *s = style;
                 }
             }