feat: 实现模块引入功能以及测试

src/interpreter/mod.rs

@@ -3,6 +3,7 @@ pub mod env;
 pub mod eval;
 pub mod exec;
 pub mod interpreter;
+pub mod module;
 
 pub use env::Env;
 pub use interpreter::Interpreter;
@@ -12,7 +13,7 @@ use std::rc::Rc;
 use std::cell::RefCell;
 use std::fmt;
 
-pub type NativeFn = Rc<dyn Fn(Vec<Value>) -> Result<Value, crate::error::RuntimeError>>;
+pub type NativeFn = Rc<dyn Fn(&mut super::Interpreter, Vec<Value>) -> Result<Value, crate::error::RuntimeError>>;
 
 #[derive(Clone)]
 pub enum Value {