feat: better re-usage of rom

examples/benchmark/src/main.rs

-use chip_ahoyto::chip8::Chip8;
-use std::{fs::File, io::Read};
+use chip_ahoyto::{chip8::Chip8, util::read_file};
 use time::Instant;
 
 const CYCLE_COUNT: u64 = 10_000_000_000;
@@ -27,10 +26,3 @@ fn main() {
 
     println!("Took {} seconds or {:.2} MHz CPU", duration_s, mega_second);
 }
-
-fn read_file(path: &str) -> Vec<u8> {
-    let mut file = File::open(path).unwrap();
-    let mut data = Vec::new();
-    file.read_to_end(&mut data).unwrap();
-    data
-}

examples/sdl/src/main.rs

-use chip_ahoyto::chip8::{Chip8, SCREEN_PIXEL_HEIGHT, SCREEN_PIXEL_WIDTH};
+use chip_ahoyto::{
+    chip8::Chip8, chip8::SCREEN_PIXEL_HEIGHT, chip8::SCREEN_PIXEL_WIDTH, util::read_file,
+};
 use sdl2::{
     audio::AudioCallback, audio::AudioSpecDesired, event::Event, image::LoadSurface,
     keyboard::Keycode, pixels::Color, pixels::PixelFormatEnum, rect::Rect, render::TextureQuery,
     surface::Surface, ttf::Hinting,
 };
-use std::{fs::File, io::Read, path::Path};
+use std::path::Path;
 
 // handle the annoying Rect i32
 macro_rules! rect(
@@ -378,10 +380,3 @@ fn key_to_btn(keycode: Keycode) -> Option<u8> {
         _ => None,
     }
 }
-
-fn read_file(path: &str) -> Vec<u8> {
-    let mut file = File::open(path).unwrap();
-    let mut data = Vec::new();
-    file.read_to_end(&mut data).unwrap();
-    data
-}

src/chip8.rs

@@ -250,7 +250,7 @@ impl Chip8 {
         self.registers[0xf] = (self.registers[x] > self.registers[y]) as u8;
         self.registers[x].saturating_sub(self.registers[y])
     }
-    
+
     #[inline(always)]
     fn call_subroutine(&mut self, addr: u16) {
         self.stack[self.sp as usize] = self.pc;

src/chip8_neo.rs

-pub struct Chip8Neo {
-    vram: [u8]
-}
+pub struct Chip8Neo {
+    vram: [u8],
+}

src/lib.rs

 pub mod chip8;
 pub mod chip8_neo;
+pub mod util;

src/util.rs

+use std::{fs::File, io::Read};
+
+pub fn read_file(path: &str) -> Vec<u8> {
+    let mut file = File::open(path).unwrap();
+    let mut data = Vec::new();
+    file.read_to_end(&mut data).unwrap();
+    data
+}