review comments

compiler/rustc_errors/src/emitter.rs

@@ -48,6 +48,12 @@ pub enum HumanReadableErrorType {
     Short,
 }
 
+impl HumanReadableErrorType {
+    pub fn short(&self) -> bool {
+        *self == HumanReadableErrorType::Short
+    }
+}
+
 #[derive(Clone, Copy, Debug)]
 struct Margin {
     /// The available whitespace in the left that can be consumed when centering.

compiler/rustc_errors/src/json.rs

@@ -176,7 +176,7 @@ fn source_map(&self) -> Option<&Lrc<SourceMap>> {
     }
 
     fn should_show_explain(&self) -> bool {
-        !matches!(self.json_rendered, HumanReadableErrorType::Short)
+        !self.json_rendered.short()
     }
 }
 
@@ -356,7 +356,7 @@ fn reset(&mut self) -> io::Result<()> {
 
         let buf = BufWriter::default();
         let mut dst: Destination = Box::new(buf.clone());
-        let short = matches!(je.json_rendered, HumanReadableErrorType::Short);
+        let short = je.json_rendered.short();
         match je.color_config {
             ColorConfig::Always | ColorConfig::Auto => dst = Box::new(termcolor::Ansi::new(dst)),
             ColorConfig::Never => {}

compiler/rustc_session/src/session.rs

@@ -951,7 +951,7 @@ fn default_emitter(
     };
     match sopts.error_format {
         config::ErrorOutputType::HumanReadable(kind, color_config) => {
-            let short = matches!(kind, HumanReadableErrorType::Short);
+            let short = kind.short();
 
             if let HumanReadableErrorType::AnnotateSnippet = kind {
                 let emitter = AnnotateSnippetEmitter::new(
@@ -1427,7 +1427,7 @@ fn mk_emitter(output: ErrorOutputType) -> Box<DynEmitter> {
         fallback_fluent_bundle(vec![rustc_errors::DEFAULT_LOCALE_RESOURCE], false);
     let emitter: Box<DynEmitter> = match output {
         config::ErrorOutputType::HumanReadable(kind, color_config) => {
-            let short = matches!(kind, HumanReadableErrorType::Short);
+            let short = kind.short();
             Box::new(
                 HumanEmitter::new(stderr_destination(color_config), fallback_bundle)
                     .short_message(short),

src/librustdoc/core.rs

@@ -139,7 +139,7 @@ pub(crate) fn new_dcx(
     );
     let emitter: Box<DynEmitter> = match error_format {
         ErrorOutputType::HumanReadable(kind, color_config) => {
-            let short = matches!(kind, HumanReadableErrorType::Short);
+            let short = kind.short();
             Box::new(
                 HumanEmitter::new(stderr_destination(color_config), fallback_bundle)
                     .sm(source_map.map(|sm| sm as _))

src/librustdoc/doctest.rs

@@ -423,7 +423,7 @@ fn run_test(
         }
     });
     if let ErrorOutputType::HumanReadable(kind, color_config) = rustdoc_options.error_format {
-        let short = matches!(kind, HumanReadableErrorType::Short);
+        let short = kind.short();
 
         if short {
             compiler.arg("--error-format").arg("short");