clippy: Fix some warnings in `components/script` (#31735)

* fix clippy problems

* fix clippy error

* fix clippy error

* fix clippy error

* fix clippy error

* fix clippy error

* fix clippy errors

12 files changed, 60 insertions, 69 deletions

diff --git a/components/script/dom/bluetooth.rs b/components/script/dom/bluetooth.rs
index 7b7aa791b0a..6489e8872e8 100644
--- a/components/script/dom/bluetooth.rs
+++ b/components/script/dom/bluetooth.rs
@@ -44,25 +44,23 @@ use std::rc::Rc;
 use std::str::FromStr;
 use std::sync::{Arc, Mutex};
 
-const KEY_CONVERSION_ERROR: &'static str =
+const KEY_CONVERSION_ERROR: &str =
     "This `manufacturerData` key can not be parsed as unsigned short:";
-const FILTER_EMPTY_ERROR: &'static str =
+const FILTER_EMPTY_ERROR: &str =
     "'filters' member, if present, must be nonempty to find any devices.";
-const FILTER_ERROR: &'static str = "A filter must restrict the devices in some way.";
-const MANUFACTURER_DATA_ERROR: &'static str =
+const FILTER_ERROR: &str = "A filter must restrict the devices in some way.";
+const MANUFACTURER_DATA_ERROR: &str =
     "'manufacturerData', if present, must be non-empty to filter devices.";
-const MASK_LENGTH_ERROR: &'static str =
-    "`mask`, if present, must have the same length as `dataPrefix`.";
+const MASK_LENGTH_ERROR: &str = "`mask`, if present, must have the same length as `dataPrefix`.";
 // 248 is the maximum number of UTF-8 code units in a Bluetooth Device Name.
 const MAX_DEVICE_NAME_LENGTH: usize = 248;
-const NAME_PREFIX_ERROR: &'static str = "'namePrefix', if present, must be nonempty.";
-const NAME_TOO_LONG_ERROR: &'static str = "A device name can't be longer than 248 bytes.";
-const SERVICE_DATA_ERROR: &'static str =
-    "'serviceData', if present, must be non-empty to filter devices.";
-const SERVICE_ERROR: &'static str = "'services', if present, must contain at least one service.";
-const OPTIONS_ERROR: &'static str = "Fields of 'options' conflict with each other.
+const NAME_PREFIX_ERROR: &str = "'namePrefix', if present, must be nonempty.";
+const NAME_TOO_LONG_ERROR: &str = "A device name can't be longer than 248 bytes.";
+const SERVICE_DATA_ERROR: &str = "'serviceData', if present, must be non-empty to filter devices.";
+const SERVICE_ERROR: &str = "'services', if present, must contain at least one service.";
+const OPTIONS_ERROR: &str = "Fields of 'options' conflict with each other.
  Either 'acceptAllDevices' member must be true, or 'filters' member must be set to a value.";
-const BT_DESC_CONVERSION_ERROR: &'static str =
+const BT_DESC_CONVERSION_ERROR: &str =
     "Can't convert to an IDL value of type BluetoothPermissionDescriptor";
 
 #[derive(JSTraceable, MallocSizeOf)]
diff --git a/components/script/dom/bluetoothadvertisingevent.rs b/components/script/dom/bluetoothadvertisingevent.rs
index e134153563b..a8697bbde41 100644
--- a/components/script/dom/bluetoothadvertisingevent.rs
+++ b/components/script/dom/bluetoothadvertisingevent.rs
@@ -43,10 +43,10 @@ impl BluetoothAdvertisingEvent {
         BluetoothAdvertisingEvent {
             event: Event::new_inherited(),
             device: Dom::from_ref(device),
-            name: name,
-            appearance: appearance,
-            tx_power: tx_power,
-            rssi: rssi,
+            name,
+            appearance,
+            tx_power,
+            rssi,
         }
     }
 
diff --git a/components/script/dom/bluetoothcharacteristicproperties.rs b/components/script/dom/bluetoothcharacteristicproperties.rs
index 3f1a765d234..3401d445a89 100644
--- a/components/script/dom/bluetoothcharacteristicproperties.rs
+++ b/components/script/dom/bluetoothcharacteristicproperties.rs
@@ -39,15 +39,15 @@ impl BluetoothCharacteristicProperties {
     ) -> BluetoothCharacteristicProperties {
         BluetoothCharacteristicProperties {
             reflector_: Reflector::new(),
-            broadcast: broadcast,
-            read: read,
-            write_without_response: write_without_response,
-            write: write,
-            notify: notify,
-            indicate: indicate,
-            authenticated_signed_writes: authenticated_signed_writes,
-            reliable_write: reliable_write,
-            writable_auxiliaries: writable_auxiliaries,
+            broadcast,
+            read,
+            write_without_response,
+            write,
+            notify,
+            indicate,
+            authenticated_signed_writes,
+            reliable_write,
+            writable_auxiliaries,
         }
     }
 
diff --git a/components/script/dom/bluetoothdevice.rs b/components/script/dom/bluetoothdevice.rs
index 0d58c4f2f9d..955b64ffb5c 100644
--- a/components/script/dom/bluetoothdevice.rs
+++ b/components/script/dom/bluetoothdevice.rs
@@ -57,8 +57,8 @@ impl BluetoothDevice {
     ) -> BluetoothDevice {
         BluetoothDevice {
             eventtarget: EventTarget::new_inherited(),
-            id: id,
-            name: name,
+            id,
+            name,
             gatt: Default::default(),
             context: Dom::from_ref(context),
             attribute_instance_map: (
diff --git a/components/script/dom/bluetoothremotegattcharacteristic.rs b/components/script/dom/bluetoothremotegattcharacteristic.rs
index 71c54461b8a..639c1dfd63f 100644
--- a/components/script/dom/bluetoothremotegattcharacteristic.rs
+++ b/components/script/dom/bluetoothremotegattcharacteristic.rs
@@ -56,10 +56,10 @@ impl BluetoothRemoteGATTCharacteristic {
         BluetoothRemoteGATTCharacteristic {
             eventtarget: EventTarget::new_inherited(),
             service: Dom::from_ref(service),
-            uuid: uuid,
+            uuid,
             properties: Dom::from_ref(properties),
             value: DomRefCell::new(None),
-            instance_id: instance_id,
+            instance_id,
         }
     }
 
diff --git a/components/script/dom/bluetoothremotegattservice.rs b/components/script/dom/bluetoothremotegattservice.rs
index 650ba5151d1..1bac5715bdc 100644
--- a/components/script/dom/bluetoothremotegattservice.rs
+++ b/components/script/dom/bluetoothremotegattservice.rs
@@ -40,9 +40,9 @@ impl BluetoothRemoteGATTService {
         BluetoothRemoteGATTService {
             eventtarget: EventTarget::new_inherited(),
             device: Dom::from_ref(device),
-            uuid: uuid,
-            is_primary: is_primary,
-            instance_id: instance_id,
+            uuid,
+            is_primary,
+            instance_id,
         }
     }
 
diff --git a/components/script/dom/bluetoothuuid.rs b/components/script/dom/bluetoothuuid.rs
index f37fa166032..6d9909ca2bf 100644
--- a/components/script/dom/bluetoothuuid.rs
+++ b/components/script/dom/bluetoothuuid.rs
@@ -24,7 +24,7 @@ pub struct BluetoothUUID {
 }
 
 //https://developer.bluetooth.org/gatt/services/Pages/ServicesHome.aspx
-const BLUETOOTH_ASSIGNED_SERVICES: &'static [(&'static str, u32)] = &[
+const BLUETOOTH_ASSIGNED_SERVICES: &[(&str, u32)] = &[
     ("org.bluetooth.service.alert_notification", 0x1811_u32),
     ("org.bluetooth.service.automation_io", 0x1815_u32),
     ("org.bluetooth.service.battery_service", 0x180f_u32),
@@ -75,7 +75,7 @@ const BLUETOOTH_ASSIGNED_SERVICES: &'static [(&'static str, u32)] = &[
 ];
 
 //https://developer.bluetooth.org/gatt/services/Pages/ServicesHome.aspx
-const BLUETOOTH_ASSIGNED_CHARCTERISTICS: &'static [(&'static str, u32)] = &[
+const BLUETOOTH_ASSIGNED_CHARCTERISTICS: &[(&str, u32)] = &[
     (
         "org.bluetooth.characteristic.aerobic_heart_rate_lower_limit",
         0x2a7e_u32,
@@ -562,12 +562,11 @@ const BLUETOOTH_ASSIGNED_DESCRIPTORS: &'static [(&'static str, u32)] = &[
     ("org.bluetooth.descriptor.time_trigger_setting", 0x290e_u32),
 ];
 
-const BASE_UUID: &'static str = "-0000-1000-8000-00805f9b34fb";
-const SERVICE_PREFIX: &'static str = "org.bluetooth.service";
-const CHARACTERISTIC_PREFIX: &'static str = "org.bluetooth.characteristic";
-const DESCRIPTOR_PREFIX: &'static str = "org.bluetooth.descriptor";
-const VALID_UUID_REGEX: &'static str =
-    "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$";
+const BASE_UUID: &str = "-0000-1000-8000-00805f9b34fb";
+const SERVICE_PREFIX: &str = "org.bluetooth.service";
+const CHARACTERISTIC_PREFIX: &str = "org.bluetooth.characteristic";
+const DESCRIPTOR_PREFIX: &str = "org.bluetooth.descriptor";
+const VALID_UUID_REGEX: &str = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$";
 // https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/bluetooth/BluetoothUUID.cpp?l=314
 const UUID_ERROR_MESSAGE: &'static str = "It must be a valid UUID alias (e.g. 0x1234), \
     UUID (lowercase hex characters e.g. '00001234-0000-1000-8000-00805f9b34fb'),\nor recognized standard name from";
diff --git a/components/script/dom/canvaspattern.rs b/components/script/dom/canvaspattern.rs
index d63bc938d19..a5d0c525799 100644
--- a/components/script/dom/canvaspattern.rs
+++ b/components/script/dom/canvaspattern.rs
@@ -39,11 +39,11 @@ impl CanvasPattern {
 
         CanvasPattern {
             reflector_: Reflector::new(),
-            surface_data: surface_data,
+            surface_data,
             surface_size,
             repeat_x: x,
             repeat_y: y,
-            origin_clean: origin_clean,
+            origin_clean,
         }
     }
     pub fn new(
diff --git a/components/script/dom/client.rs b/components/script/dom/client.rs
index d8e382e750d..610f4671bbd 100644
--- a/components/script/dom/client.rs
+++ b/components/script/dom/client.rs
@@ -32,7 +32,7 @@ impl Client {
         Client {
             reflector_: Reflector::new(),
             active_worker: Default::default(),
-            url: url,
+            url,
             frame_type: FrameType::None,
             id: Uuid::new_v4(),
         }
diff --git a/components/script/dom/closeevent.rs b/components/script/dom/closeevent.rs
index 4f136ebe905..4dee3eb84cf 100644
--- a/components/script/dom/closeevent.rs
+++ b/components/script/dom/closeevent.rs
@@ -30,9 +30,9 @@ impl CloseEvent {
     pub fn new_inherited(was_clean: bool, code: u16, reason: DOMString) -> CloseEvent {
         CloseEvent {
             event: Event::new_inherited(),
-            was_clean: was_clean,
-            code: code,
-            reason: reason,
+            was_clean,
+            code,
+            reason,
         }
     }
 
diff --git a/components/script/dom/htmlvideoelement.rs b/components/script/dom/htmlvideoelement.rs
index 1adddebd626..01bbc3b6a20 100644
--- a/components/script/dom/htmlvideoelement.rs
+++ b/components/script/dom/htmlvideoelement.rs
@@ -299,13 +299,13 @@ impl ImageCacheListener for HTMLVideoElement {
             ImageResponse::Loaded(image, url) => {
                 debug!("Loaded poster image for video element: {:?}", url);
                 self.htmlmediaelement.process_poster_image_loaded(image);
-                LoadBlocker::terminate(&mut *self.load_blocker.borrow_mut());
+                LoadBlocker::terminate(&mut self.load_blocker.borrow_mut());
             },
             ImageResponse::MetadataLoaded(..) => {},
             // The image cache may have loaded a placeholder for an invalid poster url
             ImageResponse::PlaceholderLoaded(..) | ImageResponse::None => {
                 // A failed load should unblock the document load.
-                LoadBlocker::terminate(&mut *self.load_blocker.borrow_mut());
+                LoadBlocker::terminate(&mut self.load_blocker.borrow_mut());
             },
         }
     }
diff --git a/components/script/dom/mediafragmentparser.rs b/components/script/dom/mediafragmentparser.rs
index 796b8a0ba82..c416ab29222 100644
--- a/components/script/dom/mediafragmentparser.rs
+++ b/components/script/dom/mediafragmentparser.rs
@@ -114,8 +114,8 @@ impl MediaFragmentParser {
             }
         } else {
             let mut iterator = fragment.split(',');
-            let start = parse_hms(iterator.next().ok_or_else(|| ())?)?;
-            let end = parse_hms(iterator.next().ok_or_else(|| ())?)?;
+            let start = parse_hms(iterator.next().ok_or(())?)?;
+            let end = parse_hms(iterator.next().ok_or(())?)?;
 
             if iterator.next().is_some() || start >= end {
                 return Err(());
@@ -150,8 +150,8 @@ impl MediaFragmentParser {
                 .flat_map(|s| parse_hms(&s.time().to_string()))
                 .collect();
 
-            let end = hms.pop().ok_or_else(|| ())?;
-            let start = hms.pop().ok_or_else(|| ())?;
+            let end = hms.pop().ok_or(())?;
+            let start = hms.pop().ok_or(())?;
 
             if !hms.is_empty() || start >= end {
                 return Err(());
@@ -168,10 +168,10 @@ impl MediaFragmentParser {
 
         let mut clipping = SpatialClipping {
             region: None,
-            x: queue.pop_front().ok_or_else(|| ())?,
-            y: queue.pop_front().ok_or_else(|| ())?,
-            width: queue.pop_front().ok_or_else(|| ())?,
-            height: queue.pop_front().ok_or_else(|| ())?,
+            x: queue.pop_front().ok_or(())?,
+            y: queue.pop_front().ok_or(())?,
+            width: queue.pop_front().ok_or(())?,
+            height: queue.pop_front().ok_or(())?,
         };
 
         if !queue.is_empty() {
@@ -209,10 +209,7 @@ impl From<&ServoUrl> for MediaFragmentParser {
 // 5.1.1 Processing name-value components.
 fn decode_octets(bytes: &[u8]) -> Vec<(Cow<str>, Cow<str>)> {
     form_urlencoded::parse(bytes)
-        .filter(|(key, _)| match key.as_bytes() {
-            b"t" | b"track" | b"id" | b"xywh" => true,
-            _ => false,
-        })
+        .filter(|(key, _)| matches!(key.as_bytes(), b"t" | b"track" | b"id" | b"xywh"))
         .collect()
 }
 
@@ -239,10 +236,7 @@ fn split_url(s: &str) -> (&str, &str) {
 }
 
 fn is_byte_number(byte: u8) -> bool {
-    match byte {
-        48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 => true,
-        _ => false,
-    }
+    matches!(byte, 48..=57)
 }
 
 fn split_prefix(s: &str) -> (Option<&str>, &str) {
@@ -320,13 +314,13 @@ fn parse_hms(s: &str) -> Result<f64, ()> {
         },
         2 => hms_to_seconds(
             0,
-            parse_npt_minute(vec.pop_front().ok_or_else(|| ())?)?,
-            parse_npt_seconds(vec.pop_front().ok_or_else(|| ())?)?,
+            parse_npt_minute(vec.pop_front().ok_or(())?)?,
+            parse_npt_seconds(vec.pop_front().ok_or(())?)?,
         ),
         3 => hms_to_seconds(
             vec.pop_front().ok_or_else(|| ())?.parse().map_err(|_| ())?,
-            parse_npt_minute(vec.pop_front().ok_or_else(|| ())?)?,
-            parse_npt_seconds(vec.pop_front().ok_or_else(|| ())?)?,
+            parse_npt_minute(vec.pop_front().ok_or(())?)?,
+            parse_npt_seconds(vec.pop_front().ok_or(())?)?,
         ),
         _ => return Err(()),
     };