impl From<ignore::Error> for ErrorKind

Improves the ergonomics of calling `IgnorePathSet::from_ignore_list`

Author: ytmimi

src/ignore_path.rs

@@ -1,6 +1,7 @@
 use ignore::{self, gitignore};
 
 use crate::config::{FileName, IgnoreList};
+use crate::ErrorKind;
 
 pub(crate) struct IgnorePathSet {
     ignore_set: gitignore::Gitignore,
@@ -30,6 +31,12 @@ impl IgnorePathSet {
     }
 }
 
+impl From<ignore::Error> for ErrorKind {
+    fn from(error: ignore::Error) -> Self {
+        ErrorKind::InvalidGlobPattern(error)
+    }
+}
+
 #[cfg(test)]
 mod test {
     use rustfmt_config_proc_macro::nightly_only_test;

src/parse/session.rs

@@ -142,10 +142,7 @@ fn default_handler(
 
 impl ParseSess {
     pub(crate) fn new(config: &Config) -> Result<ParseSess, ErrorKind> {
-        let ignore_path_set = match IgnorePathSet::from_ignore_list(&config.ignore()) {
-            Ok(ignore_path_set) => Lrc::new(ignore_path_set),
-            Err(e) => return Err(ErrorKind::InvalidGlobPattern(e)),
-        };
+        let ignore_path_set = Lrc::new(IgnorePathSet::from_ignore_list(&config.ignore())?);
         let source_map = Lrc::new(SourceMap::new(FilePathMapping::empty()));
         let can_reset_errors = Lrc::new(AtomicBool::new(false));