kifu/core/src/api.rs

@@ -120,7 +120,7 @@ impl CoreApp {
                 app_state.game = Some(GameState {
                     white_player,
                     black_player,
-                    ..GameState::new()
+                    ..GameState::default()
                 });
                 let game_state = app_state.game.as_ref().unwrap();
                 CoreResponse::PlayingFieldView(playing_field(game_state))

kifu/core/src/board.rs

@@ -1,7 +1,7 @@
 use crate::{BoardError, Color, Size};
 use std::collections::HashSet;
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct Board {
     pub size: Size,
     pub groups: Vec<Group>,
@@ -14,7 +14,7 @@ impl std::fmt::Display for Board {
         for c in 0..19 {
             write!(f, "{:2}", c)?;
         }
-        writeln!(f, "")?;
+        writeln!(f)?;
 
         for row in 0..self.size.height {
             write!(f, " {:2}", row)?;
@@ -25,7 +25,7 @@ impl std::fmt::Display for Board {
                     Some(Color::White) => write!(f, " O")?,
                 }
             }
-            writeln!(f, "")?;
+            writeln!(f)?;
         }
         Ok(())
     }
@@ -38,16 +38,16 @@ impl PartialEq for Board {
         }
 
         for group in self.groups.iter() {
-            if !other.groups.contains(&group) {
+            if !other.groups.contains(group) {
                 return false;
             }
         }
         for group in other.groups.iter() {
-            if !self.groups.contains(&group) {
+            if !self.groups.contains(group) {
                 return false;
             }
         }
-        return true;
+        true
     }
 }
 
@@ -79,7 +79,7 @@ pub struct Coordinate {
 
 impl Board {
     pub fn place_stone(mut self, coordinate: Coordinate, color: Color) -> Result<Self, BoardError> {
-        if let Some(_) = self.stone(&coordinate) {
+        if self.stone(&coordinate).is_some() {
             return Err(BoardError::InvalidPosition);
         }
 
@@ -92,7 +92,7 @@ impl Board {
                 acc.union(&set).cloned().collect()
             });
 
-        friendly_group.insert(coordinate.clone());
+        friendly_group.insert(coordinate);
 
         self.groups
             .retain(|g| g.coordinates.is_disjoint(&friendly_group));
@@ -138,7 +138,7 @@ impl Board {
         let mut grps: Vec<Group> = Vec::new();
 
         adjacent_spaces.for_each(|coord| match self.group(&coord) {
-            None => return,
+            None => {}
             Some(adj) => {
                 if group.color == adj.color {
                     return;
@@ -157,15 +157,14 @@ impl Board {
         group
             .coordinates
             .iter()
-            .map(|c| self.adjacencies(c))
-            .flatten()
+            .flat_map(|c| self.adjacencies(c))
             .collect::<HashSet<Coordinate>>()
     }
 
     pub fn liberties(&self, group: &Group) -> usize {
         self.group_halo(group)
             .into_iter()
-            .filter(|c| self.stone(&c) == None)
+            .filter(|c| self.stone(c).is_none())
             .count()
     }
 

kifu/core/src/database.rs

@@ -1,12 +1,14 @@
-use std::{ffi::OsStr, io::Read, os::unix::ffi::OsStrExt, path::PathBuf};
+use std::{io::Read, path::PathBuf};
 
 use sgf::{go, parse_sgf, Game};
 use thiserror::Error;
 
 #[derive(Error, Debug)]
 pub enum Error {
+    /*
     #[error("Database permission denied")]
     PermissionDenied,
+    */
     #[error("An IO error occurred: {0}")]
     IOError(std::io::Error),
 }
@@ -19,7 +21,6 @@ impl From<std::io::Error> for Error {
 
 #[derive(Debug)]
 pub struct Database {
-    path: PathBuf,
     games: Vec<go::Game>,
 }
 
@@ -56,11 +57,7 @@ impl Database {
             }
         }
 
-        Ok(Database { path, games })
-    }
-
-    pub fn len(&self) -> usize {
-        self.games.len()
+        Ok(Database { games })
     }
 
     pub fn all_games(&self) -> impl Iterator<Item = &go::Game> {

kifu/core/src/lib.rs

@@ -1,4 +1,3 @@
-#[macro_use]
 extern crate config_derive;
 
 mod api;
@@ -10,11 +9,6 @@ pub use api::{
 mod board;
 pub use board::*;
 
-/*
-mod config;
-pub use config::*;
-*/
-
 mod database;
 
 mod types;

kifu/core/src/types.rs

@@ -77,21 +77,18 @@ pub struct AppState {
 impl AppState {
     pub fn new(database_path: DatabasePath) -> Self {
         Self {
-            game: Some(GameState::new()),
+            game: Some(GameState::default()),
             database: Database::open_path(database_path.to_path_buf()).unwrap(),
         }
     }
 
     pub fn place_stone(&mut self, req: PlayStoneRequest) {
-        match self.game {
-            Some(ref mut game) => {
+        if let Some(ref mut game) = self.game {
             let _ = game.place_stone(Coordinate {
                 column: req.column,
                 row: req.row,
             });
         }
-            None => {}
-        }
     }
 }
 
@@ -142,9 +139,9 @@ pub struct GameState {
     pub black_clock: Duration,
 }
 
-impl GameState {
-    pub fn new() -> GameState {
-        GameState {
+impl Default for GameState {
+    fn default() -> Self {
+        Self {
             board: Board::new(),
             past_positions: vec![],
             conversation: vec![],
@@ -161,7 +158,9 @@ impl GameState {
             black_clock: Duration::from_secs(600),
         }
     }
+}
 
+impl GameState {
     fn place_stone(&mut self, coordinate: Coordinate) -> Result<(), BoardError> {
         let board = self.board.clone();
         let new_board = board.place_stone(coordinate, self.current_player)?;

kifu/core/src/ui/types.rs

@@ -76,7 +76,7 @@ impl BoardElement {
     }
 
     fn addr(&self, column: u8, row: u8) -> usize {
-        ((row as usize) * (self.size.width as usize) + (column as usize)) as usize
+        (row as usize) * (self.size.width as usize) + (column as usize)
     }
 }
 

kifu/gtk/src/lib.rs

@@ -28,5 +28,5 @@ where
     let result = f();
     let end = std::time::Instant::now();
     println!("[Trace: {}] {:?}", trace_name, end - start);
-    return result;
+    result
 }

kifu/gtk/src/main.rs

@@ -34,8 +34,8 @@ fn handle_response(api: CoreApi, app_window: &AppWindow, message: CoreResponse)
                     app_window.set_content(&field);
                     *playing_field = Some(field);
                 })
-            } else {
-                playing_field.as_ref().map(|field| field.update_view(view));
+            } else if let Some(field) = playing_field.as_ref() {
+                field.update_view(view)
             }
         }),
         CoreResponse::UpdatedConfigurationView(view) => perftrace("UpdatedConfiguration", || {
@@ -56,13 +56,13 @@ fn main() {
     );
 
     let config_path = std::env::var("CONFIG")
-        .and_then(|config| Ok(std::path::PathBuf::from(config)))
+        .map(std::path::PathBuf::from)
         .or({
-            std::env::var("HOME").and_then(|base| {
+            std::env::var("HOME").map(|base| {
                 let mut config_path = std::path::PathBuf::from(base);
                 config_path.push(".config");
                 config_path.push("kifu");
-                Ok(config_path)
+                config_path
             })
         })
         .expect("no config path could be found");
@@ -87,7 +87,7 @@ fn main() {
             let (gtk_tx, gtk_rx) =
                 gtk::glib::MainContext::channel::<CoreResponse>(gtk::glib::PRIORITY_DEFAULT);
 
-            let app_window = AppWindow::new(&app);
+            let app_window = AppWindow::new(app);
 
             let api = CoreApi {
                 gtk_tx,
@@ -123,5 +123,5 @@ fn main() {
     println!("running the gtk loop");
     app.run();
 
-    let _ = runtime.block_on(async { core_handle.await });
+    let _ = runtime.block_on(core_handle);
 }

kifu/gtk/src/ui/board.rs

@@ -89,7 +89,7 @@ impl ObjectImpl for BoardPrivate {
 
                     match background {
                         Ok(Some(ref background)) => {
-                            context.set_source_pixbuf(&background, 0., 0.);
+                            context.set_source_pixbuf(background, 0., 0.);
                             context.paint().expect("paint should succeed");
                         }
                         Ok(None) | Err(_) => context.set_source_rgb(0.7, 0.7, 0.7),
@@ -140,11 +140,8 @@ impl ObjectImpl for BoardPrivate {
 
                     (0..19).for_each(|col| {
                         (0..19).for_each(|row| {
-                            match board.stone(row, col) {
-                                IntersectionElement::Filled(stone) => {
-                                    pen.stone(&context, row, col, stone.color, stone.liberties);
-                                }
-                                _ => {}
+                            if let IntersectionElement::Filled(stone) = board.stone(row, col) {
+                                pen.stone(context, row, col, stone.color, stone.liberties);
                             };
                         })
                     });
@@ -152,15 +149,18 @@ impl ObjectImpl for BoardPrivate {
                     let cursor = cursor_location.borrow();
                     match *cursor {
                         None => {}
-                        Some(ref cursor) => match board.stone(cursor.row, cursor.column) {
-                            IntersectionElement::Empty(_) => pen.ghost_stone(
+                        Some(ref cursor) => {
+                            if let IntersectionElement::Empty(_) =
+                                board.stone(cursor.row, cursor.column)
+                            {
+                                pen.ghost_stone(
                                     context,
                                     cursor.row,
                                     cursor.column,
                                     *current_player.borrow(),
-                            ),
-                            _ => {}
-                        },
+                                )
+                            }
+                        }
                     }
                     let render_end = std::time::Instant::now();
                     println!("board rendering time: {:?}", render_end - render_start);
@@ -208,16 +208,17 @@ impl ObjectImpl for BoardPrivate {
                 let cursor = cursor.borrow();
                 match *cursor {
                     None => {}
-                    Some(ref cursor) => match board.stone(cursor.row, cursor.column) {
-                        IntersectionElement::Empty(request) => {
+                    Some(ref cursor) => {
+                        if let IntersectionElement::Empty(request) =
+                            board.stone(cursor.row, cursor.column)
+                        {
                             println!("need to send request: {:?}", request);
                             api.borrow()
                                 .as_ref()
                                 .expect("API must exist")
                                 .dispatch(request);
                         }
-                        _ => {}
-                    },
+                    }
                 }
             });
         }

kifu/gtk/src/ui/chat.rs

@@ -39,7 +39,7 @@ impl Chat {
         element.messages.into_iter().for_each(|msg| {
             s.imp().chat_history.append(
                 &gtk::Label::builder()
-                    .label(&msg)
+                    .label(msg)
                     .halign(gtk::Align::Start)
                     .build(),
             )

kifu/gtk/src/ui/game_preview.rs

@@ -26,8 +26,8 @@ glib::wrapper! {
     pub struct GamePreview(ObjectSubclass<GamePreviewPrivate>) @extends gtk::Box, gtk::Widget, @implements gtk::Orientable;
 }
 
-impl GamePreview {
-    pub fn new() -> GamePreview {
+impl Default for GamePreview {
+    fn default() -> Self {
         let s: Self = Object::builder().build();
         s.set_orientation(gtk::Orientation::Horizontal);
         s.set_homogeneous(true);
@@ -41,7 +41,9 @@ impl GamePreview {
 
         s
     }
+}
 
+impl GamePreview {
     pub fn set_game(&self, element: GamePreviewElement) {
         self.imp().black_player.set_text(&element.black_player);
         self.imp().white_player.set_text(&element.white_player);

kifu/gtk/src/ui/home.rs

@@ -137,7 +137,7 @@ impl Home {
             .build();
         s.append(&new_game_button);
 
-        let library = Library::new();
+        let library = Library::default();
         let library_view = gtk::ScrolledWindow::builder()
             .hscrollbar_policy(gtk::PolicyType::Never)
             .min_content_width(360)

kifu/gtk/src/ui/library.rs

@@ -1,7 +1,6 @@
-use crate::ui::GamePreview;
 use adw::{prelude::*, subclass::prelude::*};
 use glib::Object;
-use gtk::{glib, prelude::*, subclass::prelude::*};
+use gtk::glib;
 use kifu_core::ui::GamePreviewElement;
 use std::{cell::RefCell, rc::Rc};
 
@@ -92,7 +91,7 @@ impl Default for LibraryPrivate {
                     .set_child(Some(
                         &gtk::Label::builder()
                             .halign(gtk::Align::Start)
-                            .ellipsize(pango::EllipsizeMode::End)
+                            .ellipsize(gtk::pango::EllipsizeMode::End)
                             .build(),
                     ))
             });
@@ -100,10 +99,9 @@ impl Default for LibraryPrivate {
                 let list_item = list_item.downcast_ref::<gtk::ListItem>().unwrap();
                 let game = list_item.item().and_downcast::<GameObject>().unwrap();
                 let preview = list_item.child().and_downcast::<gtk::Label>().unwrap();
-                match game.game() {
-                    Some(game) => preview.set_text(&bind(game)),
-                    None => (),
-                };
+                if let Some(game) = game.game() {
+                    preview.set_text(&bind(game))
+                }
             });
             factory
         }
@@ -148,18 +146,20 @@ glib::wrapper! {
     pub struct Library(ObjectSubclass<LibraryPrivate>) @extends adw::Bin, gtk::Widget;
 }
 
-impl Library {
-    pub fn new() -> Self {
+impl Default for Library {
+    fn default() -> Self {
         let s: Self = Object::builder().build();
 
         s.set_child(Some(&s.imp().list_view));
         s
     }
+}
 
+impl Library {
     pub fn set_games(&self, games: Vec<GamePreviewElement>) {
         let games = games
             .into_iter()
-            .map(|g| GameObject::new(g))
+            .map(GameObject::new)
             .collect::<Vec<GameObject>>();
         self.imp().model.extend_from_slice(&games);
     }

kifu/gtk/src/ui/mod.rs

@@ -1,7 +1,7 @@
 use adw::prelude::*;
 use gio::resources_lookup_data;
 use glib::IsA;
-use gtk::{prelude::*, STYLE_PROVIDER_PRIORITY_USER};
+use gtk::STYLE_PROVIDER_PRIORITY_USER;
 
 mod chat;
 pub use chat::Chat;

kifu/gtk/src/ui/playing_field.rs

@@ -50,11 +50,9 @@ impl PlayingField {
         let chat = Chat::new(view.chat);
 
         *s.imp().board.borrow_mut() = Some(Board::new(api));
-        s.imp()
-            .board
-            .borrow()
-            .as_ref()
-            .map(|board| s.attach(board, 1, 1, 1, 2));
+        if let Some(board) = s.imp().board.borrow().as_ref() {
+            s.attach(board, 1, 1, 1, 2)
+        }
         s.attach(&player_card_black, 2, 1, 1, 1);
         s.attach(&player_card_white, 3, 1, 1, 1);
         s.attach(&chat, 2, 2, 2, 1);
@@ -63,20 +61,20 @@ impl PlayingField {
         *s.imp().player_card_black.borrow_mut() = Some(player_card_black);
         *s.imp().chat.borrow_mut() = Some(chat);
 
-        s.imp().board.borrow().as_ref().map(|board| {
+        if let Some(board) = s.imp().board.borrow().as_ref() {
             board.set_board(view.board);
             board.set_current_player(view.current_player);
-        });
+        };
 
         s
     }
 
     pub fn update_view(&self, view: PlayingFieldView) {
         perftrace("update_view", || {
-            self.imp().board.borrow().as_ref().map(|board| {
+            if let Some(board) = self.imp().board.borrow().as_ref() {
                 board.set_board(view.board);
                 board.set_current_player(view.current_player);
-            });
+            }
         })
     }
 }