move stuff to util file

src/main.rs

@@ -1,6 +1,7 @@
 #![feature(exclusive_range_pattern, let_chains)]
 
 mod processor;
+mod util;
 
 use clap::{ArgGroup, Parser};
 use minifb::{Window, WindowOptions};

src/processor/gpu.rs

@@ -5,7 +5,8 @@ use self::{
     },
 };
 use crate::{
-    processor::{clear_bit, get_bit, set_bit, set_or_clear_bit, SplitRegister, CPU},
+    processor::{SplitRegister, CPU},
+    util::{clear_bit, get_bit, set_bit, set_or_clear_bit},
     FACTOR, HEIGHT, WIDTH,
 };
 use minifb::{Window, WindowOptions};

src/processor/gpu/types.rs

@@ -1,4 +1,4 @@
-use crate::processor::as_signed;
+use crate::util::as_signed;
 
 #[derive(Debug, PartialEq, Clone, Copy)]
 pub(super) enum DrawMode {

src/processor/instructions/instructions.rs

@@ -1,4 +1,7 @@
-use crate::processor::{get_bit, Direction, Flags, Reg8, SplitRegister, CPU};
+use crate::{
+    processor::{get_bit, Direction, Flags, Reg8, SplitRegister, CPU},
+    util::{clear_bit, set_bit},
+};
 
 impl CPU {
     pub(crate) fn and(&mut self, first: u8, second: u8) -> u8 {
@@ -135,9 +138,9 @@ impl CPU {
 }
 
 pub(crate) fn res(byte: u8, bit: u8) -> u8 {
-    byte & !(1 << bit)
+    clear_bit(byte, bit)
 }
 
 pub(crate) fn set(byte: u8, bit: u8) -> u8 {
-    byte | (1 << bit)
+    set_bit(byte, bit)
 }

src/processor/instructions/primitives.rs

@@ -1,4 +1,7 @@
-use crate::processor::{get_bit, get_rotation_carry, rotate, Direction, Flags, SplitRegister, CPU};
+use crate::{
+    processor::{get_bit, Direction, Flags, SplitRegister, CPU},
+    util::{get_rotation_carry, rotate},
+};
 use std::ops::{BitAnd, BitOr};
 
 impl CPU {

src/processor/mod.rs

@@ -1,6 +1,8 @@
-use self::gpu::GPU;
-use self::memory::Memory;
-use crate::{processor::instructions::instructions::set, verbose_println};
+use self::{gpu::GPU, memory::Memory};
+use crate::{
+    util::{clear_bit, get_bit},
+    verbose_println,
+};
 use minifb::Window;
 use std::{mem::transmute, time::Duration};
 
@@ -277,53 +279,3 @@ impl SplitRegister for u16 {
         *self = (*self & !0xff00) | (val as u16) << 8;
     }
 }
-
-fn as_signed(unsigned: u8) -> i8 {
-    unsafe {
-        return transmute(unsigned);
-    }
-}
-
-fn get_bit(byte: u8, flag: u8) -> bool {
-    let mask = 1 << flag;
-    let got = byte & mask;
-    return got > 0x0;
-}
-
-fn set_or_clear_bit(byte: u8, flag: u8, condition: bool) -> u8 {
-    if condition {
-        set_bit(byte, flag)
-    } else {
-        clear_bit(byte, flag)
-    }
-}
-
-fn set_bit(byte: u8, flag: u8) -> u8 {
-    byte | (1 << flag)
-}
-
-fn clear_bit(byte: u8, flag: u8) -> u8 {
-    byte & (!(1 << flag))
-}
-
-fn rotate(byte: u8, direction: &Direction) -> (u8, bool) {
-    match direction {
-        Direction::Left => {
-            let carry = get_bit(byte, 7);
-            let r = byte << 1;
-            return (r, carry);
-        }
-        Direction::Right => {
-            let carry = get_bit(byte, 0);
-            let r = byte >> 1;
-            return (r, carry);
-        }
-    }
-}
-
-fn get_rotation_carry(direction: &Direction) -> u8 {
-    match direction {
-        Direction::Left => 0b1,
-        Direction::Right => 0b10000000,
-    }
-}

src/processor/opcodes.rs

@@ -1,7 +1,9 @@
-use crate::processor::{
-    as_signed,
-    instructions::instructions::{res, set},
-    Flags, Reg8, SplitRegister, CPU,
+use crate::{
+    processor::{
+        instructions::instructions::{res, set},
+        Flags, Reg8, SplitRegister, CPU,
+    },
+    util::as_signed,
 };
 
 impl CPU {

src/util.rs

@@ -0,0 +1,52 @@
+use crate::processor::Direction;
+use std::mem::transmute;
+
+pub(crate) fn as_signed(unsigned: u8) -> i8 {
+    unsafe {
+        return transmute(unsigned);
+    }
+}
+
+pub(crate) fn get_bit(byte: u8, flag: u8) -> bool {
+    let mask = 1 << flag;
+    let got = byte & mask;
+    return got > 0x0;
+}
+
+pub(crate) fn set_or_clear_bit(byte: u8, flag: u8, condition: bool) -> u8 {
+    if condition {
+        set_bit(byte, flag)
+    } else {
+        clear_bit(byte, flag)
+    }
+}
+
+pub(crate) fn set_bit(byte: u8, flag: u8) -> u8 {
+    byte | (1 << flag)
+}
+
+pub(crate) fn clear_bit(byte: u8, flag: u8) -> u8 {
+    byte & (!(1 << flag))
+}
+
+pub(crate) fn rotate(byte: u8, direction: &Direction) -> (u8, bool) {
+    match direction {
+        Direction::Left => {
+            let carry = get_bit(byte, 7);
+            let r = byte << 1;
+            return (r, carry);
+        }
+        Direction::Right => {
+            let carry = get_bit(byte, 0);
+            let r = byte >> 1;
+            return (r, carry);
+        }
+    }
+}
+
+pub(crate) fn get_rotation_carry(direction: &Direction) -> u8 {
+    match direction {
+        Direction::Left => 0b1,
+        Direction::Right => 0b10000000,
+    }
+}