fix(clippy): fix Rust v1.78.0 clippy warnings (#382)

src/eyreish/error.rs

@@ -410,7 +410,7 @@ impl Report {
     }
 
     /// Provide source code for this error
-    pub fn with_source_code(self, source_code: impl SourceCode + Send + Sync + 'static) -> Report {
+    pub fn with_source_code(self, source_code: impl SourceCode + 'static) -> Report {
         WithSourceCode {
             source_code,
             error: self,

src/eyreish/mod.rs

@@ -57,7 +57,7 @@ pub struct Report {
 unsafe impl Sync for Report {}
 unsafe impl Send for Report {}
 
-///
+#[allow(missing_docs)]
 pub type ErrorHook =
     Box<dyn Fn(&(dyn Diagnostic + 'static)) -> Box<dyn ReportHandler> + Sync + Send + 'static>;
 
@@ -109,7 +109,7 @@ fn get_default_printer(_err: &(dyn Diagnostic + 'static)) -> Box<dyn ReportHandl
 }
 
 impl dyn ReportHandler {
-    ///
+    #[allow(missing_docs)]
     pub fn is<T: ReportHandler>(&self) -> bool {
         // Get `TypeId` of the type this function is instantiated with.
         let t = core::any::TypeId::of::<T>();
@@ -121,7 +121,7 @@ impl dyn ReportHandler {
         t == concrete
     }
 
-    ///
+    #[allow(missing_docs)]
     pub fn downcast_ref<T: ReportHandler>(&self) -> Option<&T> {
         if self.is::<T>() {
             unsafe { Some(&*(self as *const dyn ReportHandler as *const T)) }
@@ -130,7 +130,7 @@ impl dyn ReportHandler {
         }
     }
 
-    ///
+    #[allow(missing_docs)]
     pub fn downcast_mut<T: ReportHandler>(&mut self) -> Option<&mut T> {
         if self.is::<T>() {
             unsafe { Some(&mut *(self as *mut dyn ReportHandler as *mut T)) }

src/eyreish/wrapper.rs

@@ -215,18 +215,6 @@ mod tests {
         }
     }
 
-    #[derive(Error, Debug)]
-    #[error("outer")]
-    struct Outer {
-        pub(crate) errors: Vec<Inner>,
-    }
-
-    impl Diagnostic for Outer {
-        fn related<'a>(&'a self) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>> {
-            Some(Box::new(self.errors.iter().map(|e| e as _)))
-        }
-    }
-
     #[test]
     fn no_override() {
         let inner_source = "hello world";
@@ -254,6 +242,18 @@ mod tests {
     #[test]
     #[cfg(feature = "fancy")]
     fn two_source_codes() {
+        #[derive(Error, Debug)]
+        #[error("outer")]
+        struct Outer {
+            pub(crate) errors: Vec<Inner>,
+        }
+
+        impl Diagnostic for Outer {
+            fn related<'a>(&'a self) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>> {
+                Some(Box::new(self.errors.iter().map(|e| e as _)))
+            }
+        }
+
         let inner_source = "hello world";
         let outer_source = "abc";
 

src/handler.rs

@@ -11,22 +11,17 @@ use crate::ThemeCharacters;
 use crate::ThemeStyles;
 
 /// Settings to control the color format used for graphical rendering.
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Default)]
 pub enum RgbColors {
     /// Use RGB colors even if the terminal does not support them
     Always,
     /// Use RGB colors instead of ANSI if the terminal supports RGB
     Preferred,
     /// Always use ANSI, regardless of terminal support for RGB
+    #[default]
     Never,
 }
 
-impl Default for RgbColors {
-    fn default() -> RgbColors {
-        RgbColors::Never
-    }
-}
-
 /**
 Create a custom [`MietteHandler`] from options.
 

src/handlers/graphical.rs

@@ -359,7 +359,7 @@ impl GraphicalReportHandler {
 
                         // If there was no header, remove the leading newline
                         let inner = inner.trim_start_matches('\n');
-                        writeln!(f, "{}", self.wrap(&inner, opts))?;
+                        writeln!(f, "{}", self.wrap(inner, opts))?;
                     }
                     ErrorKind::StdError(err) => {
                         writeln!(f, "{}", self.wrap(&err.to_string(), opts))?;
@@ -667,7 +667,7 @@ impl GraphicalReportHandler {
                     f,
                     max_gutter,
                     line,
-                    &labels,
+                    labels,
                     LabelRenderMode::SingleLine,
                 )?;
 
@@ -683,7 +683,7 @@ impl GraphicalReportHandler {
                     f,
                     max_gutter,
                     line,
-                    &labels,
+                    labels,
                     LabelRenderMode::MultiLineFirst,
                 )?;
 
@@ -701,7 +701,7 @@ impl GraphicalReportHandler {
                         f,
                         max_gutter,
                         line,
-                        &labels,
+                        labels,
                         LabelRenderMode::MultiLineRest,
                     )?;
                     self.render_multi_line_end_single(
@@ -714,13 +714,7 @@ impl GraphicalReportHandler {
             }
         } else {
             // gutter _again_
-            self.render_highlight_gutter(
+            self.render_highlight_gutter(f, max_gutter, line, labels, LabelRenderMode::SingleLine)?;
-                f,
-                max_gutter,
-                line,
-                &labels,
-                LabelRenderMode::SingleLine,
-            )?;
             // has no label
             writeln!(f, "{}", self.theme.characters.hbar.style(label.style))?;
         }
@@ -894,13 +888,11 @@ impl GraphicalReportHandler {
                     } else {
                         result.push_str(opts.initial_indent);
                     }
-                } else {
+                } else if line.trim().is_empty() {
-                    if line.trim().is_empty() {
                     result.push_str(trimmed_indent);
                 } else {
                     result.push_str(opts.subsequent_indent);
                 }
-                }
                 result.push_str(line);
             }
             if text.ends_with('\n') {

src/highlighters/syntect.rs

@@ -1,6 +1,7 @@
 use std::path::Path;
 
 // all syntect imports are explicitly qualified, but their paths are shortened for convenience
+#[allow(clippy::module_inception)]
 mod syntect {
     pub(super) use syntect::{
         highlighting::{
@@ -96,7 +97,7 @@ impl SyntectHighlighter {
         }
         // finally, attempt to guess syntax based on first line
         return self.syntax_set.find_syntax_by_first_line(
-            &std::str::from_utf8(contents.data())
+            std::str::from_utf8(contents.data())
                 .ok()?
                 .split('\n')
                 .next()?,
@@ -116,13 +117,13 @@ pub(crate) struct SyntectHighlighterState<'h> {
 
 impl<'h> HighlighterState for SyntectHighlighterState<'h> {
     fn highlight_line<'s>(&mut self, line: &'s str) -> Vec<Styled<&'s str>> {
-        if let Ok(ops) = self.parse_state.parse_line(line, &self.syntax_set) {
+        if let Ok(ops) = self.parse_state.parse_line(line, self.syntax_set) {
             let use_bg_color = self.use_bg_color;
             syntect::HighlightIterator::new(
                 &mut self.highlight_state,
                 &ops,
                 line,
-                &mut self.highlighter,
+                &self.highlighter,
             )
             .map(|(style, str)| (convert_style(style, use_bg_color).style(str)))
             .collect()

src/lib.rs

@@ -1,5 +1,6 @@
 #![deny(missing_docs, missing_debug_implementations, nonstandard_style)]
 #![warn(unreachable_pub, rust_2018_idioms)]
+#![allow(unexpected_cfgs)]
 //! You run miette? You run her code like the software? Oh. Oh! Error code for
 //! coder! Error code for One Thousand Lines!
 //!

src/panic.rs

@@ -12,7 +12,7 @@ pub fn set_panic_hook() {
             message = msg.to_string();
         }
         if let Some(msg) = payload.downcast_ref::<String>() {
-            message = msg.clone();
+            message.clone_from(msg);
         }
         let mut report: Result<()> = Err(Panic(message).into());
         if let Some(loc) = info.location() {