Add instructions enum

src/instructions.rs

@@ -0,0 +1,22 @@
+#[derive(Debug, Clone)]
+pub enum OpCode {
+  Increment,
+  Decrement,
+  MoveRight,
+  MoveLeft,
+  Print,
+  Read,
+  LoopStart,
+  LoopEnd,
+}
+
+#[derive(Debug, Clone)]
+pub enum Instruction {
+  Increment,
+  Decrement,
+  MoveRight,
+  MoveLeft,
+  Print,
+  Read,
+  Loop(Vec<OpCode>),
+}

src/lexer.rs

@@ -1,4 +1,4 @@
-use crate::opcodes::OpCode;
+use crate::instructions::OpCode;
 
 pub fn lex(input: &str) -> Vec<OpCode> {
   let mut tokens: Vec<OpCode> = Vec::new();

src/main.rs

@@ -1,6 +1,6 @@
+mod instructions;
 mod lexer;
-mod opcodes;
-use opcodes::OpCode;
+use instructions::OpCode;
 
 fn main() {
     let tokens: Vec<OpCode> = lexer::lex("++++++   [ > ++++++++++ < - ] > +++++ .");

src/opcodes.rs

@@ -1,11 +0,0 @@
-#[derive(Debug)]
-pub enum OpCode {
-  Increment,
-  Decrement,
-  MoveRight,
-  MoveLeft,
-  Print,
-  Read,
-  LoopStart,
-  LoopEnd,
-}