Some more clippy fixes, warnings are noisy

.vscode/settings.json

@@ -5,5 +5,6 @@
         "editor.defaultFormatter": "rust-lang.rust-analyzer",
         "editor.formatOnSave": true
     },
-    "rust-analyzer.check.command": "clippy"
+    "rust-analyzer.check.command": "clippy",
+    "rust-analyzer.cargo.buildScripts.enable": true
 }

kernel/src/arch/x86_64/cpu/apic.rs

@@ -1,3 +1,5 @@
+#![expect(unused)]
+
 use core::arch::x86_64::__cpuid;
 
 use crate::arch::x86_64::memory::mapping::PHYSICAL_MEMORY_OFFSET;

kernel/src/arch/x86_64/cpu/msr.rs

@@ -1,3 +1,4 @@
+#![expect(unused)]
 use core::arch::x86_64::__cpuid;
 use spin::Lazy;
 use x86_64::registers::model_specific::Msr;

kernel/src/arch/x86_64/cpu/pic.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::missing_safety_doc)]
+
 use x86_64::instructions::port::Port;
 
 const CMD_INIT: u8 = 0x11;

kernel/src/arch/x86_64/memory/allocation/heap_alloc.rs

@@ -173,15 +173,22 @@ impl FoundryFallbackAllocator {
         }
     }
 
+    /// Initialises the Foundry OS fallback allocator. This is currently a
+    /// linked list allocator pulled from the linked_list_allocator crate.
+    ///
+    /// # Safety
+    ///
+    /// This function assumes you passed a valid `heap_start` and `heap_size`,
+    /// as these are unchecked.
     pub unsafe fn init(&mut self, heap_start: usize, heap_size: usize) {
         unsafe { self.add_region(heap_start, heap_size) };
     }
 
     unsafe fn add_region(&mut self, addr: usize, size: usize) {
+        let mut node = FallbackListNode::new(size);
+        node.next = self.head.next.take();
+        let node_ptr = addr as *mut FallbackListNode;
         unsafe {
-            let mut node = FallbackListNode::new(size);
-            node.next = self.head.next.take();
-            let node_ptr = addr as *mut FallbackListNode;
             node_ptr.write(node);
             self.head.next = Some(&mut *node_ptr);
         }

kernel/src/resources/font/mod.rs

@@ -1,8 +1,8 @@
 use libm::include_font;
-pub static FONT_SPLEEN_8X16: Font =
+pub const FONT_SPLEEN_8X16: Font =
     Font::new(include_font!("../../../resources/font/spleen-8x16.psf"));
 
-pub static FONT_CP850_8X16: Font =
+pub const FONT_CP850_8X16: Font =
     Font::new(include_font!("../../../resources/font/cp850-8x16.psf"));
 
 // pub struct Font(pub [[u8; 16]; 512]);
@@ -39,8 +39,10 @@ impl Font {
     pub const fn height(&self) -> usize {
         self.height
     }
+}
 
-    pub fn default() -> &'static Self {
-        &FONT_CP850_8X16
+impl Default for Font {
+    fn default() -> Self {
+        FONT_CP850_8X16
     }
 }

kernel/src/util/editor.rs

@@ -2,10 +2,9 @@ use crate::arch::x86_64::drivers::keyboard::{KeyStroke, get_keystroke_async};
 use crate::resources::font::Font;
 use crate::serial_print;
 use crate::serial_println;
-use crate::std::application::frame::Frame;
-use crate::std::application::render::RenderError;
-use crate::std::application::window::Window;
-use crate::std::application::{Application, Error};
+use crate::std::application::{
+    Application, Error, frame::Frame, render::RenderError, window::Window,
+};
 use crate::std::ascii::Writer;
 use crate::std::maths::geometry::Vec2;
 use alloc::string::{String, ToString};
@@ -42,7 +41,8 @@ impl<'a> Editor {
 
     fn render(&'a self) -> Result<Frame<'a>, RenderError> {
         let mut frame = Frame::new(&self.window);
-        let writer = Writer::new(Font::default());
+        let font = Font::default();
+        let writer = Writer::new(&font);
 
         let (width, height) = writer.font_size().into();
 
@@ -127,7 +127,8 @@ impl<'a> Editor {
 
     fn get_char_idx(&self) -> usize {
         let frame = Frame::new(&self.window);
-        let writer = Writer::new(Font::default());
+        let font = Font::default();
+        let writer = Writer::new(&font);
         let (width, _height) = writer.font_size().into();
 
         let mut col = 0;

libm/src/lib.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code)]
 #![feature(proc_macro_span)]
 #![warn(
     clippy::correctness,
@@ -10,9 +11,6 @@
     rustdoc::missing_panics_doc
 )]
 
-use std::fs::File;
-use std::io::{Read, Seek, SeekFrom};
-
 use proc_macro::{Span, TokenStream};
 use quote::quote;
 use std::path::PathBuf;
@@ -36,7 +34,8 @@ pub fn include_font(item: TokenStream) -> TokenStream {
     let source_filepath: PathBuf = source_file.path();
     let file_path = format!(
         "{}/{}",
-        source_filepath.parent().unwrap_or_else(|| panic!("Expected to find the calling source file in a folder like src! Got: {}", source_filepath.display())).display(),
+        source_filepath.parent()
+            .unwrap_or_else(|| panic!("Expected to find the calling source file in a folder like src! Got: {}", source_filepath.display())).display(),
         filename.value()
     );
 
@@ -124,7 +123,7 @@ impl FontBuilder {
         })
     }
 
-    fn parse_psf2(data: &[u8]) -> Result<FontData, &'static str> {
+    const fn parse_psf2(_data: &[u8]) -> Result<FontData, &'static str> {
         Err("PSF2 support is not implemented yet!")
     }
 }