Ajout de tests unitaires et réorganisation des fichiers

src/rlox_interpreter.rs

@@ -0,0 +1,56 @@
+use std::{fs, io};
+use crate::EX_OK;
+use std::io::Write;
+
+use crate::scanner::Scanner;
+
+pub struct RLoxInterpreter;
+
+impl RLoxInterpreter {
+    pub fn new() -> Self {
+        RLoxInterpreter
+    }
+
+    pub fn run_file(&self, file_path: &str ) -> i32 {
+        let contents = fs::read_to_string(file_path)
+            .expect(&format!("Should have been able to read the file {file_path}"));
+
+        self.run(contents)
+    }
+
+    pub fn run_prompt(&self) -> i32 {
+        let mut exit_code = EX_OK;
+        loop {
+            print!("> ");
+            io::stdout().flush().expect("Unable to flush stdout");
+            let mut line = String::new();
+
+            io::stdin()
+                .read_line(&mut line)
+                .expect("Failed to read line");
+
+            if line.trim().is_empty() {
+                break;
+            }
+
+            exit_code = self.run(line);
+        }
+        exit_code
+    }
+
+    fn run(&self, src: String) -> i32 {
+        let mut scanner = Scanner::new( src );
+
+        scanner.scan_tokens();
+        let mut current_line = 0;
+        for t in scanner.tokens {
+            if t.line!=current_line {
+                current_line = t.line;
+                println!("-- line {} --------------------", current_line);
+            }
+            println!("{}\t{}\t{}", t.token_type, t.lexeme, t.literal);
+        }
+
+        EX_OK
+    }
+}