refactor: minor tweaks found by Clippy (#639)

src/file_utils.rs

@@ -20,8 +20,7 @@ pub fn read_file(file_path: &str) -> PyResult<String> {
         Ok(content) => Ok(content),
         Err(e) => match e.kind() {
             ErrorKind::NotFound => Err(PyFileNotFoundError::new_err(format!(
-                "File not found: '{}'",
-                file_path
+                "File not found: '{file_path}'",
             ))),
             ErrorKind::InvalidData => {
                 let file = File::open(path).unwrap();
@@ -32,7 +31,7 @@ pub fn read_file(file_path: &str) -> PyResult<String> {
                     .unwrap_or_else(|| guess_encoding(&buffer));
                 read_with_encoding(&buffer, encoding)
             }
-            _ => Err(PyIOError::new_err(format!("An error occurred: '{}'", e))),
+            _ => Err(PyIOError::new_err(format!("An error occurred: '{e}'"))),
         },
     }
 }

src/imports/ipynb.rs

@@ -63,7 +63,7 @@ fn _extract_code_from_notebook_cells(cells: &[serde_json::Value]) -> String {
     let code_lines: Vec<String> = cells
         .iter()
         .filter(|cell| cell["cell_type"] == "code")
-        .flat_map(|cell| cell["source"].as_array())
+        .filter_map(|cell| cell["source"].as_array())
         .flatten()
         .filter_map(|line| line.as_str())
         .map(str::to_owned)

src/imports/shared.rs

@@ -29,7 +29,7 @@ pub fn get_ast_from_file_content(file_content: &str) -> PyResult<Mod> {
 }
 
 /// Iterates through an AST to identify and collect import statements, and returns them together with their
-/// respective TextRange for each occurrence.
+/// respective `TextRange` for each occurrence.
 pub fn extract_imports_from_ast(ast: Mod) -> HashMap<String, Vec<TextRange>> {
     let mut visitor = ImportVisitor::new();
 
@@ -62,7 +62,7 @@ pub fn convert_imports_with_textranges_to_location_objects(
                     .column
                     .get();
                 Location {
-                    file: file_path.to_string(),
+                    file: file_path.to_owned(),
                     line: Some(start_line),
                     column: Some(start_col),
                 }
@@ -73,7 +73,7 @@ pub fn convert_imports_with_textranges_to_location_objects(
     imports_with_locations
 }
 
-/// Transforms a Rust HashMap containing import data into a Python dictionary suitable for Python-side consumption.
+/// Transforms a Rust `HashMap` containing import data into a Python dictionary suitable for Python-side consumption.
 pub fn convert_to_python_dict(
     py: Python<'_>,
     imports_with_locations: FileToImportsMap,

src/location.rs

@@ -14,14 +14,14 @@ pub struct Location {
 #[pymethods]
 impl Location {
     #[new]
-    pub fn new(file: String, line: Option<usize>, column: Option<usize>) -> Self {
-        Location { file, line, column }
+    fn new(file: String, line: Option<usize>, column: Option<usize>) -> Self {
+        Self { file, line, column }
     }
 
-    fn __repr__(&self) -> PyResult<String> {
-        Ok(format!(
+    fn __repr__(&self) -> String {
+        format!(
             "Location(file='{}', line={:?}, column={:?})",
             self.file, self.line, self.column
-        ))
+        )
     }
 }

src/visitor.rs

@@ -10,7 +10,7 @@ pub struct ImportVisitor {
 
 impl ImportVisitor {
     pub fn new() -> Self {
-        ImportVisitor {
+        Self {
             imports: HashMap::new(),
         }
     }
@@ -49,11 +49,11 @@ impl<'a> Visitor<'a> for ImportVisitor {
 }
 
 /// Extracts the top-level module name from a potentially nested module path.
-/// e.g. when a module_name is `foo.bar`, this returns `foo`.
+/// e.g. when a `module_name` is `foo.bar`, this returns `foo`.
 fn get_top_level_module_name(module_name: &str) -> String {
     module_name
         .split('.')
         .next()
         .unwrap_or(module_name)
-        .to_string()
+        .to_owned()
 }