evaluator

src/object/mod.rs

@@ -0,0 +1,50 @@
+pub enum ObjectType {
+    INTEGER,
+    BOOLEAN,
+    NULL,
+}
+
+pub trait Object {
+    fn object_type(&self) -> ObjectType;
+    fn inspect(&self) -> String;
+}
+
+pub struct Integer {
+    pub value: i64,
+}
+
+impl Object for Integer {
+    fn object_type(&self) -> ObjectType {
+        ObjectType::INTEGER
+    }
+
+    fn inspect(&self) -> String {
+        self.value.to_string()
+    }
+}
+
+pub struct Boolean {
+    pub value: bool,
+}
+
+impl Object for Boolean {
+    fn object_type(&self) -> ObjectType {
+        ObjectType::BOOLEAN
+    }
+
+    fn inspect(&self) -> String {
+        self.value.to_string()
+    }
+}
+
+pub struct Null;
+
+impl Object for Null {
+    fn object_type(&self) -> ObjectType {
+        ObjectType::NULL
+    }
+
+    fn inspect(&self) -> String {
+        "null".to_string()
+    }
+}