manual clippy fixes

Cargo.toml

@@ -29,3 +29,22 @@ baseview = { git = "https://git.alexjanka.com/alex/baseview" }
 
 [patch.crates-io]
 anymap = { git = "https://git.alexjanka.com/alex/anymap" }
+
+[workspace.lints.clippy]
+pedantic = "warn"
+cast_precision_loss = { level = "allow", priority = 1 }
+doc_markdown = { level = "allow", priority = 1 }
+if_not_else = { level = "allow", priority = 1 }
+items_after_statements = { level = "allow", priority = 1 }
+match_wildcard_for_single_variants = { level = "allow", priority = 1 }
+missing_errors_doc = { level = "allow", priority = 1 }
+missing_panics_doc = { level = "allow", priority = 1 }
+module_inception = { level = "allow", priority = 1 }
+needless_pass_by_value = { level = "allow", priority = 1 }
+similar_names = { level = "allow", priority = 1 }
+too_many_lines = { level = "allow", priority = 1 }
+type_complexity = { level = "allow", priority = 1 }
+unreadable_literal = { level = "allow", priority = 1 }
+unused_self = { level = "allow", priority = 1 }
+cast_possible_truncation = { level = "allow", priority = 1 }
+default_trait_access = { level = "allow", priority = 1 }

cli/Cargo.toml

@@ -4,6 +4,9 @@ version = "0.1.0"
 edition = "2021"
 description = "TWINC Game Boy (CGB/DMG) emulator CLI"
 
+[lints]
+workspace = true
+
 [package.metadata.bundle]
 identifier = "com.alexjanka.TWINC.cli"
 

cli/src/main.rs

@@ -54,6 +54,7 @@ impl From<SerialTargetOption> for SerialTarget {
 #[command(author, version, about, long_about = None)]
 #[command(group(ArgGroup::new("saves").args(["save","no_save"])))]
 #[command(subcommand_negates_reqs = true)]
+#[allow(clippy::struct_excessive_bools)]
 struct Args {
     #[command(subcommand)]
     command: Option<Commands>,

frontend-common/Cargo.toml

@@ -4,6 +4,9 @@ version = "0.5.1"
 edition = "2021"
 description = "Frontend common library for TWINC Game Boy (CGB/DMG) emulator"
 
+[lints]
+workspace = true
+
 [features]
 default = []
 pixels = ["gb-emu-lib/pixels-renderer"]

frontend-common/src/debug.rs

@@ -55,11 +55,12 @@ pub struct Debugger {
 }
 
 impl Debugger {
+    #[must_use]
     pub fn new(core: Box<dyn EmulatorCoreTrait>) -> Self {
         Self {
             core,
             stepping: true,
-            last_command: String::from(""),
+            last_command: String::new(),
             watches: HashMap::new(),
             breakpoints: Vec::new(),
         }
@@ -77,12 +78,12 @@ impl Debugger {
             let mut line = String::new();
             line = match io::stdin().read_line(&mut line) {
                 Ok(_) => line,
-                Err(_) => String::from(""),
+                Err(_) => String::new(),
             };
             if line.trim().is_empty() {
-                line = self.last_command.clone();
+                line.clone_from(&self.last_command);
             } else {
-                self.last_command = line.clone();
+                self.last_command.clone_from(&line);
             }
             if let Ok(command) = Commands::from_str(&line) {
                 match command {
@@ -95,7 +96,7 @@ impl Debugger {
                     Commands::Continue => self.stepping = false,
                     Commands::Break(address) => {
                         if !self.breakpoints.contains(&address) {
-                            self.breakpoints.push(address)
+                            self.breakpoints.push(address);
                         }
                     }
                 }
@@ -116,7 +117,7 @@ impl Debugger {
                 should_pause = true;
                 println!("Memory at 0x{address:0>4X} changed:");
                 println!("  from 0b{0:0>8b}/0x{0:0>2X}", *data);
-                println!("    to 0b{0:0>8b}/0x{0:0>2X}", new_data);
+                println!("    to 0b{new_data:0>8b}/0x{new_data:0>2X}");
                 *data = new_data;
             }
         }

frontend-common/src/lib.rs

@@ -65,6 +65,7 @@ fn access_config<'a>() -> &'a Configs {
     CONFIGS.get().expect("accessed config before it was set!")
 }
 
+#[allow(clippy::struct_excessive_bools)]
 pub struct RunOptions {
     pub rom: PathBuf,
     pub save: SramType,
@@ -77,6 +78,7 @@ pub struct RunOptions {
 }
 
 impl RunOptions {
+    #[must_use]
     pub fn new(rom: PathBuf) -> Self {
         Self {
             rom,

frontend-common/src/window/winit_manager.rs

@@ -60,9 +60,10 @@ where
     Backend: RendererBackend,
     <Backend as RendererBackend>::RendererError: Sync + Send + 'static,
 {
+    #[must_use]
     pub fn new(
         sender: Sender<EmulatorMessage<[u8; 4]>>,
-        _stream: Stream,
+        stream: Stream,
         record_main: bool,
     ) -> Self {
         let event_loop = EventLoop::new().unwrap();
@@ -80,7 +81,7 @@ where
                 sender,
                 gamepad_handler: Gilrs::new().unwrap(),
                 joypad_state: Default::default(),
-                _stream,
+                _stream: stream,
             },
             record_main,
         }
@@ -340,11 +341,15 @@ where
         let window = WindowBuilder::new()
             .with_title("Gameboy")
             .with_resizable(resizable);
+
         #[cfg(target_os = "linux")]
         let window = window.with_name("TWINC", "");
+
         let window = window.build(event_loop)?;
 
+        #[allow(clippy::cast_sign_loss)]
         let real_factor = (window.scale_factor() * factor as f64) as u32;
+
         let inner_size = window.inner_size();
         let resolutions = ResolutionData {
             real_width: inner_size.width,
@@ -415,8 +420,8 @@ where
     fn process(&mut self) {
         while let Ok(message) = self.receiver.try_recv() {
             match message {
-                RendererMessage::Prepare { width, height } => self.attempt_resize(width, height),
+                RendererMessage::Resize { width, height }
-                RendererMessage::Resize { width, height } => self.attempt_resize(width, height),
+                | RendererMessage::Prepare { width, height } => self.attempt_resize(width, height),
                 RendererMessage::Display { buffer } => self.display(buffer),
                 RendererMessage::SetTitle { title } => self.window.set_title(&title),
                 RendererMessage::Rumble { rumble: _ } => todo!(),
@@ -428,6 +433,7 @@ where
         self.width = width;
         self.height = height;
 
+        #[allow(clippy::cast_sign_loss)]
         let real_factor = (self.window.scale_factor() * self.factor as f64) as u32;
 
         let real_width = (width as u32) * real_factor;

gb-vst/Cargo.toml

@@ -3,6 +3,9 @@ name = "twinc_emu_vst"
 version = "0.5.1"
 edition = "2021"
 
+[lints]
+workspace = true
+
 [lib]
 crate-type = ["cdylib", "rlib"]
 

gb-vst/src/lib.rs

@@ -22,7 +22,7 @@ impl Default for VstConfig {
     fn default() -> Self {
         Self {
             scale_factor: 3,
-            rom: String::from(""),
+            rom: String::new(),
             force_skip_bootrom: true,
         }
     }

gb-vst/src/plugin.rs

@@ -346,7 +346,7 @@ impl Plugin for GameboyEmu {
         if let Ok(comms) = self.emu_comms.lock() {
             if let Some(ref comms) = *comms {
                 match comms.sender.send(EmulatorMessage::Exit) {
-                    Ok(_) => self.vars = None,
+                    Ok(()) => self.vars = None,
                     Err(e) => nih_log!("error {e} sending message to emulator"),
                 }
             }

gb-vst/src/plugin/ui.rs

@@ -84,6 +84,7 @@ impl Editor for TwincEditor {
     }
 
     fn size(&self) -> (u32, u32) {
+        #[allow(clippy::cast_sign_loss)]
         (self.size.width as u32, self.size.height as u32)
     }
 
@@ -127,6 +128,7 @@ impl TwincEditorWindow {
         size: Size,
         shader_path: Option<std::path::PathBuf>,
     ) -> Self {
+        #[allow(clippy::cast_sign_loss)]
         let current_resolution = ResolutionData {
             real_width: size.width as u32,
             real_height: size.height as u32,
@@ -152,17 +154,17 @@ impl TwincEditorWindow {
             if let Some(ref comms) = *comms {
                 while let Ok(e) = comms.receiver.try_recv() {
                     match e {
+                        RendererMessage::Display { buffer } => self.latest_buf = buffer,
                         RendererMessage::Prepare {
                             width: _,
                             height: _,
-                        } => {}
+                        }
-                        RendererMessage::Resize {
+                        | RendererMessage::Resize {
                             width: _,
                             height: _,
-                        } => {}
+                        }
-                        RendererMessage::Display { buffer } => self.latest_buf = buffer,
+                        | RendererMessage::SetTitle { title: _ }
-                        RendererMessage::SetTitle { title: _ } => {}
+                        | RendererMessage::Rumble { rumble: _ } => {}
-                        RendererMessage::Rumble { rumble: _ } => {}
                     }
                 }
             }
@@ -222,7 +224,7 @@ impl WindowHandler for TwincEditorWindow {
                                     self.joypad_state,
                                 ),
                             ) {
-                                Ok(_) => {}
+                                Ok(()) => {}
                                 Err(e) => nih_error!("error sending joypad update: {e:#?}"),
                             }
                         }

gui/Cargo.toml

@@ -4,6 +4,9 @@ version = "0.1.0"
 edition = "2021"
 description = "TWINC Game Boy (CGB/DMG) emulator GUI"
 
+[lints]
+workspace = true
+
 [package.metadata.bundle]
 identifier = "com.alexjanka.TWINC.gui"
 osx_file_extensions = [[["Game Boy ROM", "Viewer"], ["gb", "gbc"]]]

gui/src/crossplatform/game_list_entry_display/imp.rs

@@ -81,7 +81,7 @@ impl ObjectImpl for GameListWindow {
                     .and_then(move |v| v.downcast::<GameListEntryObject>().ok())
                     .unwrap()
                     .path()
-            )
+            );
         });
     }
 }

lib/Cargo.toml

@@ -3,6 +3,9 @@ name = "gb-emu-lib"
 version = "0.5.1"
 edition = "2021"
 
+[lints]
+workspace = true
+
 [features]
 default = ["config"]
 clocked-serial = []

lib/src/config/mod.rs

@@ -33,24 +33,22 @@ impl ConfigManager {
             })
     }
 
-    pub fn dir(&self) -> PathBuf {
+    #[must_use] pub fn dir(&self) -> PathBuf {
         self.path.clone()
     }
 
-    pub fn load_or_create_base_config(&self) -> Config {
+    #[must_use] pub fn load_or_create_base_config(&self) -> Config {
         self.load_or_create_config()
     }
 
-    pub fn load_or_create_config<C>(&self) -> C
+    #[must_use] pub fn load_or_create_config<C>(&self) -> C
     where
         C: NamedConfig + Serialize + DeserializeOwned + Default + Clone,
     {
-        match self.load_custom_config::<C>() {
+        if let Some(v) = self.load_custom_config::<C>() {
-            Some(v) => {
             let _ = self.save_custom_config(v.clone());
             v
-            }
+        } else {
-            None => {
             let config = C::default();
             if let Ok(true) = self.path.join(C::name()).try_exists() {
                 log::error!(
@@ -66,9 +64,8 @@ impl ConfigManager {
             config
         }
     }
-    }
 
-    pub fn load_custom_config<C>(&self) -> Option<C>
+    #[must_use] pub fn load_custom_config<C>(&self) -> Option<C>
     where
         C: NamedConfig + DeserializeOwned + Default,
     {

lib/src/connect/mod.rs

@@ -58,8 +58,7 @@ impl RomFile {
                 let save_location = match save {
                     SramType::File(path) => Some(SaveDataLocation::File(path)),
                     SramType::RawBuffer(buf) => Some(SaveDataLocation::Raw(buf)),
-                    SramType::Auto => None,
+                    SramType::Auto | SramType::None => None,
-                    SramType::None => None,
                 };
                 Ok(Rom::load(data, save_location))
             }
@@ -84,6 +83,7 @@ pub enum RendererMessage<Format: From<Colour>> {
 }
 
 impl<Format: From<Colour>> RendererMessage<Format> {
+    #[must_use]
     pub fn display_message(buffer: Vec<Format>) -> Self {
         Self::Display { buffer }
     }
@@ -105,11 +105,13 @@ pub struct AudioOutput {
 }
 
 impl AudioOutput {
+    #[must_use]
     pub fn new(
         sample_rate: f32,
         buffers_per_frame: usize,
         downsample_type: DownsampleType,
     ) -> (Self, AsyncHeapCons<[f32; 2]>) {
+        #[allow(clippy::cast_sign_loss)]
         let rb_len = (sample_rate as usize / 60) / buffers_per_frame;
 
         let rb = AsyncHeapRb::<[f32; 2]>::new(rb_len);
@@ -190,12 +192,11 @@ where
     #[allow(unused)]
     pub(crate) fn tick(&mut self, steps: usize) {
         if self.counter > 0 {
-            self.counter = match self.counter.checked_sub(steps) {
+            self.counter = if let Some(num) = self.counter.checked_sub(steps) {
-                Some(num) => num,
+                num
-                None => {
+            } else {
                 self.next_image = Some(self.inner.get_image());
                 0
-                }
             };
         }
     }
@@ -242,6 +243,7 @@ impl<ColourFormat> EmulatorOptions<ColourFormat>
 where
     ColourFormat: From<Colour> + Copy,
 {
+    #[must_use]
     pub fn new(
         window: Option<Sender<RendererMessage<ColourFormat>>>,
         rom: Rom,
@@ -293,41 +295,49 @@ where
         }
     }
 
+    #[must_use]
     pub fn with_sram_buffer(mut self, buffer: Arc<RwLock<Vec<u8>>>) -> Self {
         self.save = Some(SramType::RawBuffer(buffer));
         self
     }
 
+    #[must_use]
     pub fn with_dmg_bootrom(mut self, dmg_bootrom: Option<RomFile>) -> Self {
         self.dmg_bootrom = dmg_bootrom;
         self
     }
 
+    #[must_use]
     pub fn with_cgb_bootrom(mut self, cgb_bootrom: Option<RomFile>) -> Self {
         self.cgb_bootrom = cgb_bootrom;
         self
     }
 
+    #[must_use]
     pub fn with_show_bootrom(mut self, show_bootrom: bool) -> Self {
         self.show_bootrom = show_bootrom;
         self
     }
 
+    #[must_use]
     pub fn with_no_output(mut self, no_output: bool) -> Self {
         self.no_output = no_output;
         self
     }
 
+    #[must_use]
     pub fn with_stdout(mut self) -> Self {
         self.serial_target = SerialTarget::Stdout(StdoutType::Ascii);
         self
     }
 
+    #[must_use]
     pub fn with_serial_target(mut self, target: SerialTarget) -> Self {
         self.serial_target = target;
         self
     }
 
+    #[must_use]
     pub fn with_tile_window(
         mut self,
         window: Option<Sender<RendererMessage<ColourFormat>>>,
@@ -336,6 +346,7 @@ where
         self
     }
 
+    #[must_use]
     pub fn with_layer_window(
         mut self,
         window: Option<Sender<RendererMessage<ColourFormat>>>,
@@ -344,6 +355,7 @@ where
         self
     }
 
+    #[must_use]
     pub fn with_cgb_mode(mut self, cgb_mode: bool) -> Self {
         self.cgb_mode = cgb_mode;
         self

lib/src/lib.rs

@@ -67,7 +67,7 @@ where
                     rom.mbc_type(),
                     if is_cgb_mode { "CGB" } else { "DMG" }
                 ),
-            })?
+            })?;
         }
 
         Ok(Self::new(
@@ -167,7 +167,7 @@ where
             EmulatorMessage::Start => self.paused = false,
             EmulatorMessage::Pause => self.paused = true,
             EmulatorMessage::JoypadUpdate(new_state) => {
-                self.cpu.next_joypad_state = Some(new_state)
+                self.cpu.next_joypad_state = Some(new_state);
             }
             EmulatorMessage::NewLayerWindow(new) => self.cpu.memory.gpu.set_layer_window(new),
             EmulatorMessage::NewTileWindow(new) => self.cpu.memory.gpu.set_tile_window(new),

lib/src/processor/instructions/primitives.rs

@@ -103,9 +103,9 @@ where
 
     pub(crate) fn set_or_clear_flag(&mut self, flag: Flags, state: bool) {
         if state {
-            self.set_flag(flag)
+            self.set_flag(flag);
         } else {
-            self.clear_flag(flag)
+            self.clear_flag(flag);
         }
     }
 
@@ -125,7 +125,7 @@ where
         self.set_or_clear_flag(Flags::Zero, result == 0x0);
         self.set_or_clear_flag(
             Flags::HalfCarry,
-            first.get_low_nibble() + second.get_low_nibble() + if with_carry { 1 } else { 0 } > 0xF,
+            first.get_low_nibble() + second.get_low_nibble() + u8::from(with_carry) > 0xF,
         );
         result
     }

lib/src/processor/memory.rs

@@ -49,7 +49,7 @@ impl Wram {
             bank_0: Box::new([0; 4096]),
             banks: if cgb {
                 WramBanks::Cgb {
-                    banks: Box::new([[0; 4096]; 8]),
+                    banks: crate::util::boxed_array([0; 4096]),
                     selected: 0,
                 }
             } else {
@@ -218,7 +218,7 @@ where
             Address::Prohibited(_) => 0xFF,
             Address::Io(address) => self.get_io(address),
             Address::Hram(address) => self.cpu_ram[address.get_local() as usize],
-            Address::InterruptEnable(_) => self.interrupts.get_enable_register(),
+            Address::InterruptEnable(()) => self.interrupts.get_enable_register(),
         }
     }
 
@@ -253,25 +253,25 @@ where
             Address::CartRam(address) => self.rom.set_ram(address, data),
             Address::WorkRam(address) => self.ram.bank_0[address.get_local() as usize] = data,
             Address::BankedWorkRam(address) => {
-                self.ram.set_banked(address.get_local() as usize, data)
+                self.ram.set_banked(address.get_local() as usize, data);
             }
             Address::MirroredWorkRam(address) => {
-                self.ram.bank_0[address.get_local() as usize] = data
+                self.ram.bank_0[address.get_local() as usize] = data;
             }
             Address::MirroredBankedWorkRam(address) => {
-                self.ram.set_banked(address.get_local() as usize, data)
+                self.ram.set_banked(address.get_local() as usize, data);
             }
             Address::Oam(address) => self.gpu.set_oam(address, data),
             Address::Prohibited(_) => {}
             Address::Io(address) => {
                 if address.inner() == 0xFF50 {
-                    self.bootrom = None
+                    self.bootrom = None;
                 } else {
-                    self.set_io(address, data)
+                    self.set_io(address, data);
                 }
             }
             Address::Hram(address) => self.cpu_ram[address.get_local() as usize] = data,
-            Address::InterruptEnable(_) => self.interrupts.set_enable_register(data),
+            Address::InterruptEnable(()) => self.interrupts.set_enable_register(data),
         }
     }
 
@@ -380,16 +380,17 @@ where
                         CgbIoAddress::PrepareSpeed => cgb_peripherals.double_speed.set(data),
                         CgbIoAddress::VramBank => self.gpu.vram.set_vram_bank(data),
                         CgbIoAddress::VramDma(address) => {
-                            cgb_peripherals.vram_dma.set_register(address, data)
+                            cgb_peripherals.vram_dma.set_register(address, data);
                         }
                         CgbIoAddress::Infrared => cgb_peripherals.infrared.set(data),
                         CgbIoAddress::Palette(address) => self.gpu.set_cgb_palette(address, data),
                         CgbIoAddress::ObjPriority => self.gpu.set_obj_priority(data),
                         CgbIoAddress::WramBank => *selected = (data & 0b111).max(1) as usize,
-                        CgbIoAddress::Pcm12 => {}
+                        CgbIoAddress::Pcm12 | CgbIoAddress::Pcm34 => {}
-                        CgbIoAddress::Pcm34 => {}
                         CgbIoAddress::Unused(v) => {
-                            log::error!("attempt to set unused address 0x{v:0>4X} to 0x{data:0>2X}")
+                            log::error!(
+                                "attempt to set unused address 0x{v:0>4X} to 0x{data:0>2X}"
+                            );
                         }
                     }
                 }

lib/src/processor/memory/addresses.rs

@@ -225,7 +225,7 @@ impl AddressMarker for Address {
             Address::Prohibited(v) => v.inner(),
             Address::Io(v) => v.inner(),
             Address::Hram(v) => v.inner(),
-            Address::InterruptEnable(_) => 0xFFFF,
+            Address::InterruptEnable(()) => 0xFFFF,
         }
     }
 }

lib/src/processor/memory/addresses/types.rs

@@ -67,7 +67,7 @@ impl<const MIN: u16, const MAX: u16> TryInto<BoundedAddress<MIN, MAX>> for u16 {
 }
 
 impl<const MIN: u16, const MAX: u16> BoundedAddress<MIN, MAX> {
-    pub(crate) fn get_local(&self) -> u16 {
+    pub(crate) fn get_local(self) -> u16 {
         self.0 - MIN
     }
 }

lib/src/processor/memory/interrupts.rs

@@ -3,6 +3,7 @@ use serde::{Deserialize, Serialize};
 use crate::util::get_bit;
 
 #[derive(Default, Debug, Copy, Clone, Serialize, Deserialize)]
+#[allow(clippy::struct_excessive_bools)]
 struct InterruptRegister {
     vblank: bool,
     lcd_stat: bool,
@@ -12,7 +13,7 @@ struct InterruptRegister {
 }
 
 impl InterruptRegister {
-    fn as_register(&self) -> u8 {
+    fn as_register(self) -> u8 {
         bool_to_shifted(self.vblank, 0)
             | bool_to_shifted(self.lcd_stat, 1)
             | bool_to_shifted(self.timer, 2)
@@ -30,7 +31,7 @@ impl InterruptRegister {
 }
 
 fn bool_to_shifted(input: bool, shift: u8) -> u8 {
-    (if input { 1 } else { 0 }) << shift
+    u8::from(input) << shift
 }
 
 #[derive(Debug, PartialEq)]

lib/src/processor/memory/mmio/apu.rs

@@ -32,16 +32,16 @@ impl DacSample {
     }
 
     fn mix_channel(&self, sums: f32, volume: u8) -> f32 {
-        sums * ((volume + 1) as f32 / (8. * 4.))
+        sums * (f32::from(volume + 1) / (8. * 4.))
     }
 }
 
 pub struct Apu {
-    apu_enable: bool,
+    enable: bool,
     channels: Channels,
     vin: VinEnable,
     mixer: Mixer,
-    div_apu: u8,
+    div: u8,
     converter: Downsampler,
     output: AudioOutput,
 }
@@ -49,11 +49,11 @@ pub struct Apu {
 impl Apu {
     pub fn new(output: AudioOutput) -> Self {
         Self {
-            apu_enable: true,
+            enable: true,
             channels: Channels::default(),
             vin: VinEnable::default(),
             mixer: Mixer::default(),
-            div_apu: 0,
+            div: 0,
             converter: Downsampler::new(output.sample_rate, output.downsample_type),
             output,
         }
@@ -65,18 +65,18 @@ impl Apu {
     }
 
     pub fn div_apu_tick(&mut self) {
-        self.div_apu = self.div_apu.wrapping_add(1);
+        self.div = self.div.wrapping_add(1);
-        if self.div_apu % 8 == 0 {
+        if self.div % 8 == 0 {
             // envelope sweep
             self.channels.one.envelope_tick();
             self.channels.two.envelope_tick();
             self.channels.four.envelope_tick();
         }
-        if self.div_apu % 4 == 0 {
+        if self.div % 4 == 0 {
             // ch1 frequency sweep
             self.channels.one.frequency_tick();
         }
-        if self.div_apu % 2 == 0 {
+        if self.div % 2 == 0 {
             // tick sound length timers
             self.channels.one.length_tick();
             self.channels.two.length_tick();
@@ -124,7 +124,7 @@ impl Apu {
     }
 
     pub(crate) fn get_register(&self, addr: AudioAddress) -> u8 {
-        if self.apu_enable {
+        if self.enable {
             self.make_register(addr)
         } else {
             match addr.inner() {
@@ -178,11 +178,7 @@ impl Apu {
             }
             0xFF26 => {
                 // NR52 - Sound on/off
-                let mut v = if self.apu_enable {
+                let mut v = if self.enable { 0b11111111 } else { 0b01111111 };
-                    0b11111111
-                } else {
-                    0b01111111
-                };
                 v = set_or_clear_bit(v, 0, self.channels.one.is_dac_enabled());
                 v = set_or_clear_bit(v, 1, self.channels.two.is_dac_enabled());
                 v = set_or_clear_bit(v, 2, self.channels.three.is_dac_enabled());
@@ -190,7 +186,7 @@ impl Apu {
                 v
             }
             // write-only registers
-            0xFF13 | 0xFF18 | 0xFF1B | 0xFF1D | 0xFF20 => 0xFF,
+            0xFF13 | 0xFF18 | 0xFF1B | 0xFF1D | 0xFF20 |
             // not registers
             0xFF15 | 0xFF1F => 0xFF,
             0x0..0xFF10 | 0xFF27..=0xFFFF => unreachable!(),
@@ -198,6 +194,7 @@ impl Apu {
     }
 
     pub(crate) fn mmio_write(&mut self, addr: AudioAddress, data: u8) {
+        #[allow(clippy::match_same_arms)]
         match addr.inner() {
             0xFF10 => self.channels.one.update_sweep(data),
             0xFF11 => self.channels.one.update_length_timer_and_duty_cycle(data),
@@ -236,7 +233,7 @@ impl Apu {
                 self.mixer.ch4.left = Volume::from_bool(get_bit(data, 7));
             }
             0xFF26 => {
-                if !self.apu_enable {
+                if !self.enable {
                     for i in 0xFF10..0xFF20 {
                         self.mmio_write(i.try_into().unwrap(), 0x0);
                     }
@@ -244,7 +241,7 @@ impl Apu {
                         self.mmio_write(i.try_into().unwrap(), 0x0);
                     }
                 }
-                self.apu_enable = (1 << 7) == (data & 0b10000000);
+                self.enable = (1 << 7) == (data & 0b10000000);
             }
             0x0..0xFF10 | 0xFF27..=0xFFFF => unreachable!(),
         }

lib/src/processor/memory/mmio/apu/channels.rs

@@ -59,10 +59,10 @@ impl Envelope {
             self.counter = 0;
             match self.mode {
                 EnvelopeMode::Increase => {
-                    self.current_volume = self.current_volume.saturating_add(1)
+                    self.current_volume = self.current_volume.saturating_add(1);
                 }
                 EnvelopeMode::Decrease => {
-                    self.current_volume = self.current_volume.saturating_sub(1)
+                    self.current_volume = self.current_volume.saturating_sub(1);
                 }
             }
         }
@@ -105,7 +105,7 @@ const FIFTY: [u8; 8] = [1, 0, 0, 0, 0, 1, 1, 1];
 const SEVENTY_FIVE: [u8; 8] = [0, 1, 1, 1, 1, 1, 1, 0];
 
 impl DutyCycle {
-    fn get_waveform(&self, index: usize) -> u8 {
+    fn get_waveform(self, index: usize) -> u8 {
         match self {
             DutyCycle::TwelvePointFive => TWELVE_POINT_FIVE[index],
             DutyCycle::TwentyFive => TWENTY_FIVE[index],
@@ -114,7 +114,7 @@ impl DutyCycle {
         }
     }
 
-    fn as_u8(&self) -> u8 {
+    fn as_u8(self) -> u8 {
         match self {
             DutyCycle::TwelvePointFive => 0b00,
             DutyCycle::TwentyFive => 0b01,
@@ -190,7 +190,7 @@ impl PwmChannel {
 
     fn dac(&mut self, digital: u8) -> f32 {
         self.last = digital;
-        (((digital as f32) * (-2.)) + 1.) * ((self.envelope.current_volume as f32) / 15.)
+        ((f32::from(digital) * (-2.)) + 1.) * (f32::from(self.envelope.current_volume) / 15.)
     }
 
     pub(super) fn envelope_tick(&mut self) {
@@ -206,7 +206,7 @@ impl PwmChannel {
         self.sweep.counter += 1;
         if self.sweep.counter % self.sweep.pace == 0 {
             self.sweep.counter = 0;
-            let wavelength_diff = self.wavelength / (2_u16.pow(self.sweep.slope as u32));
+            let wavelength_diff = self.wavelength / (2_u16.pow(u32::from(self.sweep.slope)));
             let new_wavelength = match self.sweep.mode {
                 EnvelopeMode::Increase => self.wavelength + wavelength_diff,
                 EnvelopeMode::Decrease => self.wavelength.saturating_sub(wavelength_diff),
@@ -280,13 +280,13 @@ impl PwmChannel {
     }
 
     pub(super) fn update_wavelength_low(&mut self, data: u8) {
-        self.wavelength = (self.wavelength & 0xFF00) | (data as u16);
+        self.wavelength = (self.wavelength & 0xFF00) | u16::from(data);
         self.set_wave_timer();
     }
 
     pub(super) fn update_wavelength_high_and_control(&mut self, data: u8) {
         self.length_enable = get_bit(data, 6);
-        self.wavelength = (self.wavelength & 0xFF) | (((data & 0b111) as u16) << 8);
+        self.wavelength = (self.wavelength & 0xFF) | (u16::from(data & 0b111) << 8);
         self.set_wave_timer();
         if get_bit(data, 7) {
             self.trigger();
@@ -315,7 +315,7 @@ enum ShiftVolumePercent {
 }
 
 impl ShiftVolumePercent {
-    fn as_shift_amount(&self) -> u8 {
+    fn as_shift_amount(self) -> u8 {
         match self {
             ShiftVolumePercent::Zero => 8,
             ShiftVolumePercent::TwentyFive => 2,
@@ -404,7 +404,7 @@ impl WaveChannel {
     fn dac(&mut self, digital: u8) -> f32 {
         if self.dac_enabled && self.volume != ShiftVolumePercent::Zero {
             self.last = digital;
-            ((((digital >> self.volume.as_shift_amount()) as f32) * (-2.)) + 1.) / 15.
+            ((f32::from(digital >> self.volume.as_shift_amount()) * (-2.)) + 1.) / 15.
         } else {
             self.last = 0;
             0.
@@ -453,13 +453,13 @@ impl WaveChannel {
     }
 
     pub(super) fn update_wavelength_low(&mut self, data: u8) {
-        self.wavelength = (self.wavelength & 0xFF00) | (data as u16);
+        self.wavelength = (self.wavelength & 0xFF00) | u16::from(data);
         self.set_wave_timer();
     }
 
     pub(super) fn update_wavelength_high_and_control(&mut self, data: u8) {
         self.length_enable = get_bit(data, 6);
-        self.wavelength = (self.wavelength & 0xFF) | (((data & 0b111) as u16) << 8);
+        self.wavelength = (self.wavelength & 0xFF) | (u16::from(data & 0b111) << 8);
         self.set_wave_timer();
         if get_bit(data, 7) {
             self.trigger();
@@ -472,9 +472,10 @@ impl WaveChannel {
 
     pub(super) fn update_wave_ram(&mut self, addr: WaveRamAddress, data: u8) {
         let real_addr = addr.get_local() as usize;
-        if real_addr >= self.wave_ram.data.len() {
+        assert!(
-            panic!("sent the wrong address to update_wave_ram");
+            real_addr < self.wave_ram.data.len(),
-        }
+            "sent the wrong address to update_wave_ram"
+        );
         self.wave_ram.data[real_addr] = data;
     }
 
@@ -506,8 +507,8 @@ struct Lfsr {
 
 impl Lfsr {
     fn update(&mut self) {
-        self.interval = (1_u16 << (self.clock_shift as u16))
+        self.interval = (1_u16 << u16::from(self.clock_shift))
-            .wrapping_mul(1 + (2 * self.clock_divider as u16))
+            .wrapping_mul(1 + (2 * u16::from(self.clock_divider)))
             .wrapping_mul(8);
     }
 
@@ -520,21 +521,13 @@ impl Lfsr {
     }
 
     fn next_value(&mut self) {
-        let next = if (self.register & 0b1) == ((self.register >> 1) & 0b1) {
+        let next = u16::from((self.register & 0b1) == ((self.register >> 1) & 0b1));
-            1
-        } else {
-            0
-        };
         self.register = (self.register & !(0b1 << 15)) | (next << 15);
         if self.width == LfsrWidth::SevenBit {
             self.register = (self.register & !(0b1 << 7)) | (next << 7);
         }
         self.register >>= 1;
-        self.current_value = if (self.register & 0b1) == 0b1 {
+        self.current_value = u8::from((self.register & 0b1) == 0b1);
-            0x1
-        } else {
-            0x0
-        };
     }
 }
 
@@ -601,7 +594,7 @@ impl NoiseChannel {
 
     fn dac(&mut self, digital: u8) -> f32 {
         self.last = digital;
-        (((digital as f32) * (-2.)) + 1.) * ((self.envelope.current_volume as f32) / 15.)
+        ((f32::from(digital) * (-2.)) + 1.) * (f32::from(self.envelope.current_volume) / 15.)
     }
 
     pub(super) fn envelope_tick(&mut self) {

lib/src/processor/memory/mmio/apu/downsampler.rs

@@ -15,7 +15,7 @@ impl Default for Averager {
 }
 
 impl Averager {
-    fn push(&mut self, next: &[f32; 2]) {
+    fn push(&mut self, next: [f32; 2]) {
         self.accum[0] += next[0];
         self.accum[1] += next[1];
         self.num += 1;
@@ -58,7 +58,7 @@ impl Downsampler {
     pub fn push(&mut self, signal: [f32; 2]) -> Option<[f32; 2]> {
         self.time_accum += 1.;
         if let Some(ref mut averager) = self.average {
-            averager.push(&signal);
+            averager.push(signal);
         }
         if self.time_accum >= self.ratio {
             self.time_accum -= self.ratio;

lib/src/processor/memory/mmio/apu/types.rs

@@ -34,14 +34,14 @@ pub(super) enum Volume {
 }
 
 impl Volume {
-    pub(super) fn gate(&self, val: f32) -> f32 {
+    pub(super) fn gate(self, val: f32) -> f32 {
         match self {
             Volume::Muted => 0.,
             Volume::Enabled => val,
         }
     }
 
-    pub(super) fn bool(&self) -> bool {
+    pub(super) fn bool(self) -> bool {
         match self {
             Volume::Muted => false,
             Volume::Enabled => true,

lib/src/processor/memory/mmio/cgb/double_speed.rs

@@ -8,8 +8,8 @@ pub(crate) struct DoubleSpeed {
 }
 
 impl DoubleSpeed {
-    pub(crate) fn get(&self) -> u8 {
+    pub(crate) fn get(self) -> u8 {
-        0b01111110 | if self.current { 0b1 << 7 } else { 0 } | if self.prepared { 0b1 } else { 0 }
+        0b01111110 | if self.current { 0b1 << 7 } else { 0 } | u8::from(self.prepared)
     }
 
     pub(crate) fn set(&mut self, data: u8) {

lib/src/processor/memory/mmio/cgb/ir.rs

@@ -9,8 +9,8 @@ pub struct Infrared {
 }
 
 impl Infrared {
-    pub(crate) fn get(&self) -> u8 {
+    pub(crate) fn get(self) -> u8 {
-        0b111110 | if self.led { 1 } else { 0 } | if self.read_enable { 0b11 << 6 } else { 0 }
+        0b111110 | u8::from(self.led) | if self.read_enable { 0b11 << 6 } else { 0 }
     }
 
     pub(crate) fn set(&mut self, data: u8) {

lib/src/processor/memory/mmio/cgb/vram_dma.rs

@@ -26,10 +26,10 @@ enum DmaMode {
 }
 
 impl DmaMode {
-    fn get_byte(&self) -> u8 {
+    fn get_byte(self) -> u8 {
         match self {
             DmaMode::Halt(_) => unreachable!(),
-            DmaMode::Hblank(v, _) => *v,
+            DmaMode::Hblank(v, _) => v,
             DmaMode::Waiting => 0xFF,
         }
     }
@@ -42,7 +42,7 @@ impl Default for DmaMode {
 }
 
 impl VramDma {
-    pub(crate) fn get_register(&self, address: VramDmaAddress) -> u8 {
+    pub(crate) fn get_register(self, address: VramDmaAddress) -> u8 {
         match address.inner() {
             0xFF51 => self.source.get_high(),
             0xFF52 => self.source.get_low(),
@@ -88,7 +88,7 @@ where
         let returning = if let Some(cgb_peripherals) = &mut self.cgb_peripherals {
             match cgb_peripherals.vram_dma.mode {
                 DmaMode::Halt(l) => {
-                    let length = 16 * ((l as u16) + 1);
+                    let length = 16 * (u16::from(l) + 1);
                     copy = Some((
                         cgb_peripherals.vram_dma.source,
                         cgb_peripherals.vram_dma.destination,
@@ -109,7 +109,7 @@ where
                         cgb_peripherals.vram_dma.source += length;
                         cgb_peripherals.vram_dma.destination += length;
                         *progress += 1;
-                        if *progress > (l as u16) {
+                        if *progress > u16::from(l) {
                             cgb_peripherals.vram_dma.mode = DmaMode::Waiting;
                             cgb_peripherals.vram_dma.reset_registers();
                         }

lib/src/processor/memory/mmio/gpu.rs

@@ -41,10 +41,8 @@ where
     type BufferType = T;
 
     fn new_buffer(default: Self::BufferType) -> Self {
-        let mut v: Vec<T> = Vec::new();
+        let temp = vec![default; SIZE].into_boxed_slice();
-        v.resize(SIZE, default);
+        unsafe { Box::from_raw(Box::into_raw(temp).cast::<[T; SIZE]>()) }
-        let temp = v.into_boxed_slice();
-        unsafe { Box::from_raw(Box::into_raw(temp) as *mut [T; SIZE]) }
     }
 }
 
@@ -194,7 +192,7 @@ where
             || (self.stat.vblank_interrupt_enabled && (self.stat.mode == DrawMode::VBlank))
             || (self.stat.hblank_interrupt_enabled && (self.stat.mode == DrawMode::HBlank));
 
-        interrupts.lcd_stat = this_stat & !self.prev_stat;
+        interrupts.lcd_stat = this_stat && !self.prev_stat;
         self.prev_stat = this_stat;
         interrupts
     }
@@ -204,7 +202,7 @@ where
     }
 
     pub(crate) fn set_vram(&mut self, address: VramAddress, data: u8) {
-        self.vram.set(address, data)
+        self.vram.set(address, data);
     }
 
     pub(crate) fn get_oam(&self, address: OamAddress) -> u8 {
@@ -217,7 +215,7 @@ where
 
     pub(crate) fn set_oam(&mut self, address: OamAddress, data: u8) {
         if self.stat.mode == DrawMode::VBlank || self.stat.mode == DrawMode::HBlank {
-            self.oam.set(address, data)
+            self.oam.set(address, data);
         }
     }
 
@@ -360,8 +358,8 @@ where
         }
         let tile_row = object_row % 8;
         let tile_addr = (TiledataArea::D8000
-            .get_addr(object.tile_index + if object_row >= 8 { 1 } else { 0 })
+            .get_addr(object.tile_index + u8::from(object_row >= 8))
-            + (tile_row as u16 * 2))
+            + (u16::from(tile_row) * 2))
             .unwrap();
         let bank = if self.is_cgb_mode() {
             object.flags.cgb_vram_bank
@@ -418,7 +416,7 @@ where
                     layer_window.set(
                         buffer_index + (2 * HEIGHT * WIDTH),
                         colour.rgb_bytes(cgb_data).into(),
-                    )
+                    );
                 }
             }
         }
@@ -445,7 +443,7 @@ where
                 continue;
             }
 
-            let tilemap_column = (tile_line_x / 8) as u16;
+            let tilemap_column = u16::from(tile_line_x / 8);
 
             let tilemap_addr = tilemap.get_addr(row_addr + (tilemap_column));
             let attributes = if self.is_cgb_mode() {
@@ -467,7 +465,7 @@ where
                 self.vram
                     .get_with_bank(tilemap_addr, VramBank::Bank0)
                     .unwrap(),
-            ) + tiledata_offset as u16)
+            ) + u16::from(tiledata_offset))
             .unwrap();
 
             let lsbs = self
@@ -505,7 +503,7 @@ where
                 layer_window.set(
                     (scanline as usize * WIDTH) + x + if is_bg { 0 } else { HEIGHT * WIDTH },
                     colour.rgb_bytes(cgb_data).into(),
-                )
+                );
             }
         }
     }

lib/src/processor/memory/mmio/gpu/addresses.rs

@@ -37,12 +37,12 @@ where
     }
 
     pub fn get_lcdc(&self) -> u8 {
-        (if self.lcdc.enable { 1 } else { 0 }) << 7
+        u8::from(self.lcdc.enable) << 7
             | (match self.lcdc.window_tilemap {
                 TilemapArea::T9800 => 0,
                 TilemapArea::T9C00 => 1,
             }) << 6
-            | (if self.lcdc.window_enable { 1 } else { 0 }) << 5
+            | u8::from(self.lcdc.window_enable) << 5
             | (match self.lcdc.tile_area {
                 TiledataArea::D8000 => 1,
                 TiledataArea::D9000 => 0,
@@ -55,8 +55,8 @@ where
                 ObjSize::S8x8 => 0,
                 ObjSize::S8x16 => 1,
             }) << 2
-            | (if self.lcdc.obj_enable { 1 } else { 0 }) << 1
+            | u8::from(self.lcdc.obj_enable) << 1
-            | (if self.lcdc.bg_window_enable { 1 } else { 0 })
+            | u8::from(self.lcdc.bg_window_enable)
     }
 
     pub fn update_lcd_status(&mut self, data: u8) {

lib/src/processor/memory/mmio/gpu/cgb.rs

@@ -68,7 +68,7 @@ impl CgbPalette {
     fn set_data(&mut self, data: u8) {
         self.data[self.index as usize] = data;
         if self.auto_increment {
-            self.index = (self.index + 1) & 0b111111
+            self.index = (self.index + 1) & 0b111111;
         }
     }
 

lib/src/processor/memory/mmio/gpu/layer_window.rs

@@ -41,7 +41,7 @@ where
             .sender
             .send(RendererMessage::display_message(new_buffer))
         {
-            Ok(_) => {
+            Ok(()) => {
                 for val in self.buffer.iter_mut() {
                     *val = get_blank_colour(cgb);
                 }

lib/src/processor/memory/mmio/gpu/tile_window.rs

@@ -79,7 +79,7 @@ where
             .sender
             .send(RendererMessage::display_message(self.buffer.clone()))
         {
-            Ok(_) => Some(self),
+            Ok(()) => Some(self),
             Err(_) => None,
         }
     }
@@ -138,7 +138,7 @@ where
                 tile_bank: bank,
                 ..Default::default()
             };
-            let data_begin = data_begin + ((tile_x * 16) as u16);
+            let data_begin = data_begin + (tile_x * 16);
 
             for px_y in 0..8_u16 {
                 let lsbs = memory

lib/src/processor/memory/mmio/gpu/types.rs

@@ -24,7 +24,7 @@ pub(super) enum TilemapArea {
 }
 
 impl TilemapArea {
-    pub(super) fn get_addr(&self, addr: u16) -> VramAddress {
+    pub(super) fn get_addr(self, addr: u16) -> VramAddress {
         match self {
             TilemapArea::T9800 => (0x9800 + addr).try_into().unwrap(),
             TilemapArea::T9C00 => (0x9C00 + addr).try_into().unwrap(),
@@ -39,11 +39,11 @@ pub(super) enum TiledataArea {
 }
 
 impl TiledataArea {
-    pub(super) fn get_addr(&self, addr: u8) -> VramAddress {
+    pub(super) fn get_addr(self, addr: u8) -> VramAddress {
         match self {
-            TiledataArea::D8000 => (0x8000 + ((addr as u16) * 16)).try_into().unwrap(),
+            TiledataArea::D8000 => (0x8000 + (u16::from(addr) * 16)).try_into().unwrap(),
             TiledataArea::D9000 => 0x9000_u16
-                .wrapping_add_signed((as_signed(addr) as i16) * 16)
+                .wrapping_add_signed(i16::from(as_signed(addr)) * 16)
                 .try_into()
                 .unwrap(),
         }
@@ -57,7 +57,7 @@ pub(super) enum ObjSize {
 }
 
 impl ObjSize {
-    pub(super) fn get_height(&self) -> u8 {
+    pub(super) fn get_height(self) -> u8 {
         match self {
             ObjSize::S8x8 => 8,
             ObjSize::S8x16 => 16,
@@ -66,6 +66,7 @@ impl ObjSize {
 }
 
 #[derive(Debug, PartialEq, Clone, Copy, Serialize, Deserialize)]
+#[allow(clippy::struct_excessive_bools)]
 pub(super) struct Lcdc {
     pub(super) enable: bool,
     pub(super) window_tilemap: TilemapArea,
@@ -105,7 +106,7 @@ pub struct Colour(pub u8, pub u8, pub u8);
 
 impl From<Colour> for u32 {
     fn from(value: Colour) -> Self {
-        let (r, g, b) = (value.0 as u32, value.1 as u32, value.2 as u32);
+        let (r, g, b) = (u32::from(value.0), u32::from(value.1), u32::from(value.2));
         (r << 16) | (g << 8) | b
     }
 }
@@ -139,17 +140,16 @@ pub(super) fn rgb_from_bytes(bytes: u16) -> Colour {
 }
 
 impl ColourInner {
-    pub(super) fn rgb_bytes(&self, cgb_data: Option<(&CgbPalette, u8)>) -> Colour {
+    pub(super) fn rgb_bytes(self, cgb_data: Option<(&CgbPalette, u8)>) -> Colour {
         if let Some((cgb_palette, pallete_num)) = cgb_data {
             let offset: usize = (pallete_num as usize * 2 * 4)
-                + (if *self == ColourInner::Error {
+                + (if self == ColourInner::Error {
                     if cfg!(feature = "error-colour") {
                         return ERROR_COLOUR;
-                    } else {
-                        ColourInner::Zero
                     }
+                    ColourInner::Zero
                 } else {
-                    *self
+                    self
                 } as usize
                     * 2);
 
@@ -180,13 +180,12 @@ impl ColourInner {
         }
     }
 
-    fn as_bits(&self) -> u8 {
+    fn as_bits(self) -> u8 {
         match self {
-            ColourInner::Zero => 0b00,
+            ColourInner::Error | ColourInner::Zero => 0b00,
             ColourInner::One => 0b01,
             ColourInner::Two => 0b10,
             ColourInner::Three => 0b11,
-            ColourInner::Error => 0b00,
         }
     }
 }
@@ -209,14 +208,14 @@ impl Palette {
         }
     }
 
-    pub(super) fn as_byte(&self) -> u8 {
+    pub(super) fn as_byte(self) -> u8 {
         self.zero.as_bits()
             | (self.one.as_bits() << 2)
             | (self.two.as_bits() << 4)
             | (self.three.as_bits() << 6)
     }
 
-    pub(super) fn map_bits(&self, lsb: bool, msb: bool) -> (ColourInner, bool) {
+    pub(super) fn map_bits(self, lsb: bool, msb: bool) -> (ColourInner, bool) {
         match (lsb, msb) {
             (true, true) => (self.three, false),
             (true, false) => (self.one, false),
@@ -249,6 +248,7 @@ pub(super) struct Object {
 }
 
 #[derive(Serialize, Deserialize, Clone, Copy, Debug)]
+#[allow(clippy::struct_excessive_bools)]
 pub(super) struct Stat {
     pub(super) lyc_eq_ly_interrupt_enabled: bool,
     pub(super) mode_2_interrupt_enabled: bool,
@@ -335,7 +335,7 @@ impl Vram {
         match self {
             Vram::Dmg { inner } => inner[address.get_local() as usize] = data,
             Vram::Cgb { inner, index } => {
-                inner[*index as usize][address.get_local() as usize] = data
+                inner[*index as usize][address.get_local() as usize] = data;
             }
         }
     }

lib/src/processor/memory/mmio/joypad.rs

@@ -11,6 +11,7 @@ pub struct Joypad {
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Default)]
+#[allow(clippy::struct_excessive_bools)]
 pub struct JoypadState {
     pub down: bool,
     pub up: bool,

lib/src/processor/memory/mmio/oam_dma.rs

@@ -18,7 +18,7 @@ impl Default for OamDma {
 }
 
 impl OamDma {
-    pub(crate) fn get_register(&self) -> u8 {
+    pub(crate) fn get_register(self) -> u8 {
         self.addr
     }
 
@@ -27,7 +27,7 @@ impl OamDma {
         self.addr = data;
     }
 
-    pub(crate) fn is_active(&self) -> bool {
+    pub(crate) fn is_active(self) -> bool {
         self.progress.is_some()
     }
 }

lib/src/processor/memory/mmio/serial.rs

@@ -67,7 +67,7 @@ const BYTE_DELAY: usize = 2000;
 const CLOCK_DIV: usize = CLOCK_SPEED / 8192;
 
 impl InputByte {
-    fn advance(&mut self, rx: &Option<Receiver<u8>>) -> u8 {
+    fn advance(&mut self, rx: Option<&Receiver<u8>>) -> u8 {
         if let Some(byte) = self.byte {
             let val = (byte >> (7 - self.progress)) & 0b1;
             self.progress += 1;
@@ -83,7 +83,7 @@ impl InputByte {
         }
     }
 
-    fn try_fill(&mut self, rx: &Option<Receiver<u8>>) -> Option<u8> {
+    fn try_fill(&mut self, rx: Option<&Receiver<u8>>) -> Option<u8> {
         self.byte = None;
         self.progress = 0;
         if let Some(rx) = rx {
@@ -96,7 +96,7 @@ impl InputByte {
         None
     }
 
-    fn is_ready(&mut self, rx: &Option<Receiver<u8>>) -> bool {
+    fn is_ready(&mut self, rx: Option<&Receiver<u8>>) -> bool {
         if self.byte.is_none() {
             self.try_fill(rx);
         }
@@ -139,9 +139,9 @@ impl Serial {
             return false;
         }
         let rx = if let SerialTarget::Custom { rx, tx: _ } = &self.target {
-            rx
+            rx.as_ref()
         } else {
-            &None
+            None
         };
         for _ in 0..steps {
             #[cfg(feature = "clocked-serial")]
@@ -212,11 +212,7 @@ impl Serial {
 
     pub fn get_control(&self) -> u8 {
         0b01111110
-            | (if self.control.transfer_in_progress {
+            | (u8::from(self.control.transfer_in_progress) << 7)
-                0b1
-            } else {
-                0b0
-            } << 7)
             | match self.control.clock_source {
                 ClockSource::Internal => 0b1,
                 ClockSource::External => 0b0,

lib/src/processor/memory/mmio/timer.rs

@@ -20,7 +20,7 @@ impl TimerRate {
         }
     }
 
-    fn as_bits(&self) -> u8 {
+    fn as_bits(self) -> u8 {
         match self {
             TimerRate::Sixteen => 0b01,
             TimerRate::SixtyFour => 0b10,
@@ -29,7 +29,7 @@ impl TimerRate {
         }
     }
 
-    fn as_num(&self) -> usize {
+    fn as_num(self) -> usize {
         match self {
             TimerRate::Sixteen => 16,
             TimerRate::SixtyFour => 64,

lib/src/processor/memory/rom.rs

@@ -119,7 +119,7 @@ pub enum RomSize {
 }
 
 impl RomSize {
-    pub fn from(val: u8) -> Option<Self> {
+    #[must_use] pub fn from(val: u8) -> Option<Self> {
         match val {
             0x00 => Some(Self::B2),
             0x01 => Some(Self::B4),
@@ -137,7 +137,7 @@ impl RomSize {
         }
     }
 
-    pub fn size_bytes(&self) -> usize {
+    #[must_use] pub fn size_bytes(&self) -> usize {
         (match self {
             RomSize::B2 => 2,
             RomSize::B4 => 4,
@@ -177,7 +177,7 @@ impl RamSize {
         }
     }
 
-    pub fn size_bytes(&self) -> usize {
+    #[must_use] pub fn size_bytes(&self) -> usize {
         match self {
             RamSize::B2 => 2 * KB,
             RamSize::B8 => 8 * KB,
@@ -370,7 +370,7 @@ impl Rom {
         }
     }
 
-    pub fn get_title(&self) -> &String {
+    #[must_use] pub fn get_title(&self) -> &String {
         &self.title
     }
 
@@ -398,7 +398,7 @@ impl Rom {
         self.mbc.can_rumble()
     }
 
-    pub fn mbc_type(&self) -> String {
+    #[must_use] pub fn mbc_type(&self) -> String {
         self.mbc.mbc_type()
     }
 

lib/src/processor/memory/rom/licensee.rs

@@ -134,9 +134,10 @@ pub enum LicenseeCode {
 }
 
 impl LicenseeCode {
+    #[must_use]
+    #[allow(clippy::match_same_arms)]
     pub fn from_header(old_licensee_code: u8, new_code: [u8; 2]) -> Self {
         match old_licensee_code {
-            0x00 => Self::None,
             0x01 => Self::Nintendo,
             0x08 => Self::Capcom,
             0x09 => Self::HotB,

lib/src/processor/memory/rom/mbcs/mbc3.rs

@@ -35,7 +35,7 @@ struct Rtc {
 }
 
 impl Rtc {
-    fn get_register(&self, rtc_register: &RtcRegister) -> u8 {
+    fn get_register(&self, rtc_register: RtcRegister) -> u8 {
         let time = self.latched_time.unwrap_or(Instant::now()) - self.base_time;
         match rtc_register {
             RtcRegister::Seconds => (time.as_secs() % 60) as u8,
@@ -49,17 +49,22 @@ impl Rtc {
         }
     }
 
-    fn set_register(&mut self, rtc_register: &RtcRegister, data: u8) {
+    fn set_register(&mut self, rtc_register: RtcRegister, data: u8) {
         let seconds_offset = match rtc_register {
-            RtcRegister::Seconds => data as i64 - self.get_register(&RtcRegister::Seconds) as i64,
+            RtcRegister::Seconds => {
+                i64::from(data) - i64::from(self.get_register(RtcRegister::Seconds))
+            }
             RtcRegister::Minutes => {
-                (data as i64 - self.get_register(&RtcRegister::Minutes) as i64) * 60
+                (i64::from(data) - i64::from(self.get_register(RtcRegister::Minutes))) * 60
             }
             RtcRegister::Hours => {
-                (data as i64 - self.get_register(&RtcRegister::Hours) as i64) * 60 * 60
+                (i64::from(data) - i64::from(self.get_register(RtcRegister::Hours))) * 60 * 60
             }
             RtcRegister::DayCounterLsb => {
-                (data as i64 - self.get_register(&RtcRegister::DayCounterLsb) as i64) * 60 * 60 * 24
+                (i64::from(data) - i64::from(self.get_register(RtcRegister::DayCounterLsb)))
+                    * 60
+                    * 60
+                    * 24
             }
             RtcRegister::Misc => 0,
         };
@@ -112,7 +117,7 @@ impl Mbc3 {
             rom_size: rom_size.size_bytes(),
             ram,
             ram_bank: RamBank::Ram(0),
-            ram_size: ram_size.map(|s| s.size_bytes()).unwrap_or(0),
+            ram_size: ram_size.map_or(0, |s| s.size_bytes()),
             ram_enabled: false,
             rtc: if rtc { Some(Rtc::default()) } else { None },
         }
@@ -148,7 +153,7 @@ impl Mbc for Mbc3 {
                 }
                 RamBank::Rtc(rtc_register) => {
                     if let Some(rtc) = &self.rtc {
-                        return rtc.get_register(rtc_register);
+                        return rtc.get_register(*rtc_register);
                     }
                 }
             }
@@ -205,7 +210,7 @@ impl Mbc for Mbc3 {
                 }
                 RamBank::Rtc(rtc_register) => {
                     if let Some(ref mut rtc) = self.rtc {
-                        rtc.set_register(rtc_register, data);
+                        rtc.set_register(*rtc_register, data);
                     }
                 }
             }

lib/src/processor/memory/rom/mbcs/mbc5.rs

@@ -40,7 +40,7 @@ impl Mbc5 {
             rom_size: rom_size.size_bytes(),
             ram,
             ram_bank: 0,
-            ram_size: ram_size.map(|s| s.size_bytes()).unwrap_or(0),
+            ram_size: ram_size.map_or(0, |s| s.size_bytes()),
             ram_enabled: false,
             rumble,
             is_rumbling: false,
@@ -82,14 +82,14 @@ impl Mbc for Mbc5 {
             0x0..0x2000 => {
                 self.ram_enabled = (data & 0xF) == 0xA;
             }
-            0x2000..0x3000 => self.rom_bank = (self.rom_bank & 0x100) | (data as u16),
+            0x2000..0x3000 => self.rom_bank = (self.rom_bank & 0x100) | u16::from(data),
-            0x3000..0x4000 => self.rom_bank = (self.rom_bank & 0xFF) | ((data as u16 & 0b1) << 8),
+            0x3000..0x4000 => self.rom_bank = (self.rom_bank & 0xFF) | ((u16::from(data) & 0b1) << 8),
             0x4000..0x6000 => {
                 if self.rumble {
                     self.is_rumbling = get_bit(data, 3);
                     self.ram_bank = data & 0x7;
                 } else {
-                    self.ram_bank = data & 0xF
+                    self.ram_bank = data & 0xF;
                 }
             }
             0x6000..0x8000 => {}

lib/src/processor/memory/rom/mbcs/pocketcamera.rs

@@ -72,7 +72,7 @@ where
 
     fn get_cam_reg(&self, address: CartRamAddress) -> u8 {
         match address.inner() {
-            0xA000 => (if self.camera.is_capturing() { 0x1 } else { 0x0 }) | self.extra_bits_a000,
+            0xA000 => u8::from(self.camera.is_capturing()) | self.extra_bits_a000,
             0xA001..=0xA035 => self.camera_ram[(address.inner() - 0xA001) as usize],
             _ => 0x00,
         }
@@ -133,7 +133,7 @@ where
             }
             0x2000..0x4000 => {
                 if data < 0x40 {
-                    self.rom_bank = data
+                    self.rom_bank = data;
                 }
             }
             0x4000..0x6000 => {

lib/src/processor/mod.rs

@@ -20,6 +20,7 @@ pub(crate) enum Direction {
     Right,
 }
 
+#[allow(clippy::struct_excessive_bools)]
 pub struct Cpu<ColourFormat>
 where
     ColourFormat: From<Colour> + Copy,
@@ -223,10 +224,10 @@ impl SplitRegister for u16 {
     }
 
     fn set_low(&mut self, val: u8) {
-        *self = (*self & !0xff) | val as u16;
+        *self = (*self & !0xff) | u16::from(val);
     }
 
     fn set_high(&mut self, val: u8) {
-        *self = (*self & !0xff00) | (val as u16) << 8;
+        *self = (*self & !0xff00) | u16::from(val) << 8;
     }
 }

lib/src/util.rs

@@ -164,3 +164,8 @@ pub fn scale_buffer_in_place<T: From<Colour> + Copy>(
         }
     }
 }
+
+pub(crate) fn boxed_array<T: Copy, const SIZE: usize>(default: T) -> Box<[T; SIZE]> {
+    let temp = vec![default; SIZE].into_boxed_slice();
+    unsafe { Box::from_raw(Box::into_raw(temp).cast::<[T; SIZE]>()) }
+}

xtask/Cargo.toml

@@ -3,6 +3,9 @@ name = "xtask"
 version = "0.1.0"
 edition = "2021"
 
+[lints]
+workspace = true
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

xtask/src/args.rs

@@ -1,6 +1,6 @@
 use clap::Parser;
 
-use crate::types::*;
+use crate::types::{Architecture, Binary, Platform, Renderer};
 
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]

xtask/src/main.rs

@@ -1,8 +1,8 @@
 use clap::Parser;
 use strum::IntoEnumIterator;
 
-use args::*;
+use args::{Args, BuildArgs, Commands, RunArgs};
-use types::*;
+use types::{Architecture, Binary, CouldntSetOnceLock, Platform, Renderer, get_triple};
 mod args;
 mod types;
 
@@ -295,7 +295,7 @@ fn cargo_exec(
     println!("Building {package} with {renderer} renderer for target {triple}");
 
     let args=format!("{verb} -q -p {package} --target {triple} {release} --no-default-features -F {renderer} --message-format=json-render-diagnostics");
-    let args = args.split_whitespace().map(|s| s.to_string());
+    let args = args.split_whitespace().map(std::string::ToString::to_string);
     let args = if let Some(additional_flags) = additional_flags {
         args.chain(additional_flags).collect::<Vec<_>>()
     } else {
@@ -338,8 +338,8 @@ fn cargo_exec(
     Ok(
         cargo_metadata::Message::parse_stream(std::io::BufReader::new(output)).inspect(move |v| {
             match v {
-                Ok(cargo_metadata::Message::BuildScriptExecuted(_))
+                Ok(cargo_metadata::Message::BuildScriptExecuted(_) |
-                | Ok(cargo_metadata::Message::CompilerArtifact(_)) => {
+cargo_metadata::Message::CompilerArtifact(_)) => {
                     if let Some(pb) = pb.as_mut() {
                         pb.inc();
                     }
@@ -382,7 +382,7 @@ fn build_vst(
     }
 
     // we need the &str to live for this whole function
-    let triple_str = triple.map(|t| t.to_string());
+    let triple_str = triple.map(std::string::ToString::to_string);
     if platform != Platform::Mac {
         args.push("--target");
         args.push(triple_str.as_ref().unwrap().as_str());
@@ -428,8 +428,8 @@ fn build_vst(
 
     for v in cargo_metadata::Message::parse_stream(std::io::BufReader::new(output)) {
         match v {
-            Ok(cargo_metadata::Message::BuildScriptExecuted(_))
+            Ok(cargo_metadata::Message::BuildScriptExecuted(_) |
-            | Ok(cargo_metadata::Message::CompilerArtifact(_)) => {
+cargo_metadata::Message::CompilerArtifact(_)) => {
                 if pb.as_ref().is_some_and(|pb| pb.is_finish) {
                     pb = build_plan_iter.next().map(|(arch, num)| {
                         let mut pb = pbr::ProgressBar::new(num.try_into().unwrap());

xtask/src/types.rs

@@ -8,7 +8,7 @@ pub enum Platform {
 }
 
 impl Platform {
-    pub fn as_cargo(&self) -> cfg_expr::targets::Os {
+    pub fn as_cargo(self) -> cfg_expr::targets::Os {
         match self {
             Platform::Windows => cfg_expr::targets::Os::windows,
             Platform::Linux => cfg_expr::targets::Os::linux,
@@ -58,7 +58,7 @@ pub enum Architecture {
 }
 
 impl Architecture {
-    pub fn as_cargo(&self) -> cfg_expr::targets::Arch {
+    pub fn as_cargo(self) -> cfg_expr::targets::Arch {
         match self {
             Architecture::Aarch64 => cfg_expr::targets::Arch::aarch64,
             Architecture::X86_64 => cfg_expr::targets::Arch::x86_64,
@@ -131,7 +131,7 @@ impl std::error::Error for CouldntSetOnceLock {
         None
     }
 
-    fn description(&self) -> &str {
+    fn description(&self) -> &'static str {
         "description() is deprecated; use Display"
     }