refactor: refactor things with Clippy's help

Merge branch 'refactor/clippy' of https://gitea.treehouse.systems/fortressia/echidna

See #23

clippy.toml

@@ -1 +0,0 @@
-"clippy::style" = "deny"

src/components/editor/mod.rs

@@ -21,47 +21,47 @@ impl EchidnaCoreEditor {
         // Without cloning it, for some reasons the Rust compiler complains about &this.to_imp().sourceview not being IsA<sourceview::View>
         this_imp.minimap.set_view(&this_imp.sourceview.clone());
 
-        if file.is_some() {
-            let file = file.unwrap();
-            let file_location = file
-                .location()
-                .expect("file is required to have a location");
+        match file {
+            Some(file) => {
+                let file_location = file
+                    .location()
+                    .expect("file is required to have a location");
 
-            this.set_property("file", &file)
-                .expect("Could not set the 'file' property of EchidnaCoreEditor");
+                this.set_property("file", &file)
+                    .expect("Could not set the 'file' property of EchidnaCoreEditor");
 
-            let cancellable = gio::Cancellable::new();
-            let filepath = file_location.path().expect("No filepath");
-            let info = file_location
-                .query_info("*", gio::FileQueryInfoFlags::NONE, Some(&cancellable))
-                .expect("Could not query the info for file");
+                let cancellable = gio::Cancellable::new();
+                let filepath = file_location.path().expect("No filepath");
+                let info = file_location
+                    .query_info("*", gio::FileQueryInfoFlags::NONE, Some(&cancellable))
+                    .expect("Could not query the info for file");
 
-            let content_type = info
-                .content_type()
-                .expect(format!("It does not seem like {:?} has a type", filepath).as_str());
-            {
-                println!(
-                    "Opened {} and found its content type is {}.",
-                    "file",
-                    content_type.to_string()
-                );
-                let buffer = this_imp.sourceview.buffer().downcast::<Buffer>().expect("Cannot downcast the sourceview's buffer. Maybe the sourceview's buffer is not IsA<sourceview::Buffer>.");
-                let language_manager = LanguageManager::new();
-                let language = language_manager.guess_language(
-                    Some(&info.name().to_str().expect(
-                        "Could not open the file because its name is not supported by Unicode.",
-                    )),
-                    None,
-                );
+                let content_type = info
+                    .content_type()
+                    .expect(format!("It does not seem like {:?} has a type", filepath).as_str());
+                {
+                    println!(
+                        "Opened {} and found its content type is {}.",
+                        "file",
+                        content_type.to_string()
+                    );
+                    let buffer = this_imp.sourceview.buffer().downcast::<Buffer>().expect("Cannot downcast the sourceview's buffer. Maybe the sourceview's buffer is not IsA<sourceview::Buffer>.");
+                    let language_manager = LanguageManager::new();
+                    let language = language_manager.guess_language(
+                        Some(&info.name().to_str().expect(
+                            "Could not open the file because its name is not supported by Unicode.",
+                        )),
+                        None,
+                    );
 
-                match language {
-                    Some(lang) => buffer.set_language(Some(&lang)),
-                    None => {}
-                }
+                    match language {
+                        Some(lang) => buffer.set_language(Some(&lang)),
+                        None => {}
+                    }
 
-                let file_loader: FileLoader = FileLoader::new(&buffer, &file);
+                    let file_loader: FileLoader = FileLoader::new(&buffer, &file);
 
-                file_loader.load_async(
+                    file_loader.load_async(
                     glib::Priority::default(),
                     Some(&cancellable),
                     |_, _| {},
@@ -71,7 +71,9 @@ impl EchidnaCoreEditor {
                         }
                     },
                 );
+                }
             }
+            None => {}
         }
         this
     }

src/components/sidebar/mod.rs

@@ -15,3 +15,9 @@ impl EchidnaSidebar {
         glib::Object::new(&[]).expect("Failed to create 'EchidnaSidebar' component.")
     }
 }
+
+impl Default for EchidnaSidebar {
+    fn default() -> Self {
+        Self::new()
+    }
+}

src/components/tab_label/imp.rs

@@ -36,9 +36,9 @@ impl BuildableImpl for TabLabel {
     fn add_child(
         &self,
         buildable: &Self::Type,
-        builder: &gtk::Builder,
+        _builder: &gtk::Builder,
         child: &glib::Object,
-        type_: Option<&str>,
+        _type_: Option<&str>,
     ) {
         buildable.prepend(child.downcast_ref::<gtk::Widget>().unwrap());
     }

src/components/tab_label/mod.rs

@@ -17,8 +17,9 @@ impl TabLabel {
     pub fn new<U: IsA<gtk::Widget>>(tab_label: Option<&U>) -> Self {
         let this: Self = glib::Object::new(&[]).expect("Failed to create 'TabLabel' component.");
 
-        if tab_label.is_some() {
-            this.prepend(tab_label.unwrap());
+        match tab_label {
+            Some(tab_label) => this.prepend(tab_label),
+            None => {}
         }
         this
     }

src/components/window/file.rs

@@ -67,7 +67,7 @@ impl FileImplementedEditor for super::EchidnaWindow {
         notebook.prepend_closable_page(
             &editor_page,
             Some(&Label::new(Some(
-                &file_location
+                file_location
                     .path()
                     .expect("The file's path is missing")
                     .file_name()

src/lib/closeable_tab.rs

@@ -4,7 +4,7 @@
 
 use crate::components::tab_label::TabLabel;
 use glib::IsA;
-use gtk::{prelude::*, Box, Button, Widget};
+use gtk::{prelude::*, Widget};
 
 pub trait ClosableTabImplementedNotebook {
     fn prepend_closable_page<T: IsA<Widget>, U: IsA<Widget>>(