Basic repl

src/main.rs

@@ -1,3 +1,62 @@
+use std::io;
+use std::io::Write;
+use std::io::BufRead;
+
 fn main() {
-    println!("Hello, world!");
+    println!("Unnamed language 0.01");
+    repl();
+}
+
+#[derive(Debug)]
+enum Token {
+    EOF,
+    NumLiteral(i32),
+    StrLiteral(String),
+    Identifier(String)
+    /* Keyword(Keyword) */ //implement in future
+
+}
+
+#[derive(Debug)]
+enum ASTNode {
+    GenericNode
+}
+
+
+fn repl() {
+    let mut stdin = io::stdin();
+    let mut stdout = io::stdout();
+    let mut buf = String::with_capacity(20);
+    loop {
+        print!(">> ");
+        stdout.flush().ok();
+        let line = stdin.lock().read_line(&mut buf);
+        match line {
+            Ok(n) => {
+                let result = tokenize(&buf);
+                println!("Tokens: {:?}", result);
+            },
+            Err(err) => {
+                println!("Error: {}", err);
+            }
+        }
+    }
+}
+
+
+fn tokenize(input: &str) -> Vec<Token> {
+    let mut tokens = Vec::new();
+    let mut buffer = String::with_capacity(20);
+    let mut iterator = input.chars();
+    loop {
+
+        break;
+    }
+
+    tokens.push(Token::EOF);
+    tokens
+}
+
+fn parse(_input: Vec<Token>) -> ASTNode {
+    ASTNode::GenericNode
 }