feat(utils): create dedicated utils module;

src/emulation/memory.rs

@@ -1,13 +1,11 @@
 use arbitrary_int::u6;
 
+use crate::utils::tuple_as_usize;
+
 use super::program_counter::ProgramCounter;
 
 const RAM_SIZE: usize = 3902;
 
-fn tuple_as_usize(tuple: (u6, u6)) -> usize {
-    ((u16::from(tuple.0) << 6) | u16::from(tuple.1)) as usize
-}
-
 pub struct Memory {
     pub program_counter: ProgramCounter,
     pub ram: [u6; RAM_SIZE],

src/emulation/program_counter.rs

@@ -2,6 +2,8 @@ use std::{rc::Rc, sync::Mutex};
 
 use arbitrary_int::{u6, Number};
 
+use crate::utils::tuple_as_usize;
+
 // TODO add some docs
 
 #[derive(Debug, Clone, Default)]

src/main.rs

@@ -19,6 +19,7 @@ mod emulation;
 mod character_encoding;
 mod errors;
 mod instruction;
+mod utils;
 
 use errors::Error;
 

src/utils.rs

@@ -0,0 +1,9 @@
+use arbitrary_int::{u12, u6};
+
+pub fn tuple_as_usize(tuple: (u6, u6)) -> usize {
+    ((u16::from(tuple.0) << 6) | u16::from(tuple.1)) as usize
+}
+
+pub fn tuple_as_u12(tuple: (u6, u6)) -> u12 {
+    u12::new((u16::from(tuple.0) << 6) | u16::from(tuple.1))
+}