Fix all clippy lints

ARCHITECTURE.md

@@ -122,5 +122,3 @@ but in this project, it is very important. The build process is split into modul
 1. `rust/build/main.rs` - Entry point that orchestrates the build
 2. `rust/build/java.rs` - Embeds all transitive dependencies of the `paper-api` Java library and the PatchBukkit jar
 3. `rust/build/protobufs.rs` - Generates Rust protobuf code and FFI entry points from `.proto` definitions
-
-## Adding a new FFI method

rust/build/protobufs.rs

@@ -63,7 +63,7 @@ impl FfiServiceGenerator {
     fn package_to_module_path(&self, package: &str) -> String {
         package
             .split('.')
-            .map(|s| to_snake_case(s))
+            .map(to_snake_case)
             .collect::<Vec<_>>()
             .join("::")
     }
@@ -92,7 +92,13 @@ impl ServiceGenerator for FfiServiceGenerator {
             });
 
             buf.push_str(&format!(
-                r#"
+                r#"/// FFI function for {fn_name}
+///
+/// # Safety
+///
+/// - `input_ptr` must be a valid pointer to `input_len` bytes of memory
+/// - `output_len` must be a valid pointer to write the output length
+/// - The caller is responsible for freeing the returned pointer using `ffi_free_bytes`
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn {fn_name}(
     input_ptr: *const u8,
@@ -170,7 +176,13 @@ pub fn setup_protobufs(base: PathBuf) {
 
     writeln!(
         file,
-        r#"
+        r#"/// Frees bytes allocated by FFI functions
+///
+/// # Safety
+///
+/// - `ptr` must have been returned by an FFI function in this module
+/// - `len` must be the length that was written to `output_len`
+/// - The pointer must not have been freed previously
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn ffi_free_bytes(ptr: *mut u8, len: usize) {{
     if !ptr.is_null() && len > 0 {{

rust/src/java/native_callbacks/abilities.rs

@@ -7,22 +7,21 @@ use crate::proto::patchbukkit::{
 pub fn ffi_native_bridge_get_abilities_impl(request: Uuid) -> Option<Abilities> {
     let ctx = CALLBACK_CONTEXT.get()?;
     let player_uuid = uuid::Uuid::parse_str(&request.value).ok()?;
-    let mut abilities = Abilities::default();
     let player = ctx.plugin_context.server.get_player_by_uuid(player_uuid)?;
-    let pumpkin_abilities = tokio::task::block_in_place(|| {
+    let abilities = tokio::task::block_in_place(|| {
         ctx.runtime
             .block_on(async { player.abilities.lock().await })
     });
 
-    abilities.invulnerable = pumpkin_abilities.invulnerable;
-    abilities.flying = pumpkin_abilities.flying;
-    abilities.allow_flying = pumpkin_abilities.allow_flying;
-    abilities.creative = pumpkin_abilities.creative;
-    abilities.allow_modify_world = pumpkin_abilities.allow_modify_world;
-    abilities.fly_speed = pumpkin_abilities.fly_speed;
-    abilities.walk_speed = pumpkin_abilities.walk_speed;
-
-    return Some(abilities);
+    Some(Abilities {
+        invulnerable: abilities.invulnerable,
+        flying: abilities.flying,
+        allow_flying: abilities.allow_flying,
+        creative: abilities.creative,
+        allow_modify_world: abilities.allow_modify_world,
+        fly_speed: abilities.fly_speed,
+        walk_speed: abilities.walk_speed,
+    })
 }
 
 pub fn ffi_native_bridge_set_abilities_impl(request: SetAbilitiesRequest) -> Option<bool> {

rust/src/java/native_callbacks/events.rs

@@ -74,27 +74,19 @@ pub fn ffi_native_bridge_call_event_impl(request: CallEventRequest) -> Option<Ca
         ctx.runtime.block_on(async {
             match event_data {
                 EventData::PlayerJoin(player_join_event_data) => {
-                    if let Ok(uuid) =
-                        uuid::Uuid::parse_str(&player_join_event_data.player_uuid?.value)
-                    {
-                        if let Some(player) = context.server.get_player_by_uuid(uuid) {
+                    let uuid =
+                        uuid::Uuid::parse_str(&player_join_event_data.player_uuid?.value).ok()?;
+                    let player = context.server.get_player_by_uuid(uuid)?;
                     let pumpkin_event = PlayerJoinEvent::new(
                         player,
-                                TextComponent::from_legacy_string(
-                                    &player_join_event_data.join_message,
-                                ),
+                        TextComponent::from_legacy_string(&player_join_event_data.join_message),
                     );
                     context.server.plugin_manager.fire(pumpkin_event).await;
-                            return Some(true);
-                        }
-                    }
-                    Some(false)
+                    Some(true)
                 }
             }
         })
-    });
+    })?;
 
-    let mut response = CallEventResponse::default();
-    response.handled = handled?;
-    Some(response)
+    Some(CallEventResponse { handled })
 }

rust/src/java/native_callbacks/location.rs

@@ -28,24 +28,20 @@ pub fn ffi_native_bridge_get_location_impl(entity_uuid: Uuid) -> Option<Location
         let yaw = entity.yaw.load();
         let pitch = entity.pitch.load();
 
-        let mut response_position = Vec3::default();
-        response_position.x = position.x;
-        response_position.y = position.y;
-        response_position.z = position.z;
-
-        let mut world_uuid = Uuid::default();
-        world_uuid.value = world.to_string();
-
-        let mut response_world = World::default();
-        response_world.uuid = Some(world_uuid);
-
-        let mut location = Location::default();
-        location.pitch = pitch;
-        location.position = Some(response_position);
-        location.world = Some(response_world);
-        location.yaw = yaw;
-
-        return Some(location);
+        return Some(Location {
+            world: Some(World {
+                uuid: Some(Uuid {
+                    value: world.to_string(),
+                }),
+            }),
+            position: Some(Vec3 {
+                x: position.x,
+                y: position.y,
+                z: position.z,
+            }),
+            yaw,
+            pitch,
+        });
     }
 
     None

rust/src/java/native_callbacks/registry.rs

@@ -10,21 +10,19 @@ pub fn ffi_native_bridge_get_registry_data_impl(
         val if val == RegistryType::SoundEvent as i32 => {
             let sounds = pumpkin_data::sound::Sound::slice()
                 .iter()
-                .map(|s| {
-                    let mut sound_event = SoundEvent::default();
-                    sound_event.id = *s as u32;
-                    sound_event.name = s.to_name().to_string();
-                    sound_event
+                .map(|s| SoundEvent {
+                    id: *s as u32,
+                    name: s.to_name().to_string(),
                 })
                 .collect::<Vec<_>>();
-            let mut data = SoundEventRegistryData::default();
-            data.sound_events = sounds;
-            Registry::SoundEvent(data)
+            Registry::SoundEvent(SoundEventRegistryData {
+                sound_events: sounds,
+            })
         }
         _ => unreachable!(),
     };
 
-    let mut response = GetRegistryDataResponse::default();
-    response.registry = Some(registry);
-    Some(response)
+    Some(GetRegistryDataResponse {
+        registry: Some(registry),
+    })
 }