chore: replace pub with pub(crate) when possible

src/work_ram.rs

@@ -4,16 +4,16 @@ const WORK_RAM_START_ADDRESS: usize = 0xC000;
 const VARIABLE_WORK_RAM_START_ADDRESS: usize = 0xD000;
 
 #[derive(Debug, Clone)]
-pub struct WorkRam {
+pub(crate) struct WorkRam {
     bank: Box<[u8; WORK_RAM_SIZE]>,
 }
 
 impl WorkRam {
-    pub fn write_byte(&mut self, addr: u16, byte: u8) {
+    pub(crate) fn write_byte(&mut self, addr: u16, byte: u8) {
         self.bank[addr as usize - WORK_RAM_START_ADDRESS] = byte;
     }
 
-    pub fn read_byte(&self, addr: u16) -> u8 {
+    pub(crate) fn read_byte(&self, addr: u16) -> u8 {
         self.bank[addr as usize - WORK_RAM_START_ADDRESS]
     }
 }
@@ -27,7 +27,7 @@ impl Default for WorkRam {
 }
 
 #[derive(Debug, Clone, Copy)]
-pub enum BankNumber {
+pub(crate) enum BankNumber {
     One = 1,
     Two = 2,
     Three = 3,
@@ -38,7 +38,7 @@ pub enum BankNumber {
 }
 
 #[derive(Debug, Clone)]
-pub struct VariableWorkRam {
+pub(crate) struct VariableWorkRam {
     current: BankNumber,
     bank_n: Box<[[u8; VARIABLE_WORK_RAM_SIZE]; 7]>, // 4K for Variable amount of Banks (Banks 1 -> 7) in Game Boy Colour
 }
@@ -53,19 +53,19 @@ impl Default for VariableWorkRam {
 }
 
 impl VariableWorkRam {
-    pub fn set_current_bank(&mut self, bank: BankNumber) {
+    pub(crate) fn set_current_bank(&mut self, bank: BankNumber) {
         self.current = bank;
     }
 
-    pub fn get_current_bank(&self) -> BankNumber {
+    pub(crate) fn get_current_bank(&self) -> BankNumber {
         self.current
     }
 
-    pub fn write_byte(&mut self, addr: u16, byte: u8) {
+    pub(crate) fn write_byte(&mut self, addr: u16, byte: u8) {
         self.bank_n[self.current as usize][addr as usize - VARIABLE_WORK_RAM_START_ADDRESS] = byte;
     }
 
-    pub fn read_byte(&self, addr: u16) -> u8 {
+    pub(crate) fn read_byte(&self, addr: u16) -> u8 {
         self.bank_n[self.current as usize][addr as usize - VARIABLE_WORK_RAM_START_ADDRESS]
     }
 }