Interpreter - Split into multiple modules

src/interpreter/value.rs

@@ -0,0 +1,21 @@
+/// A value being handled by the interpreter.
+#[derive(Debug, Clone, PartialEq)]
+pub enum Value {
+    Nil,
+    Boolean(bool),
+    String(String),
+    Number(f64),
+}
+
+impl Value {
+    /// Check whether a value is truthy or not.
+    pub fn is_truthy(&self) -> bool {
+        if self == &Value::Nil {
+            false
+        } else if let Value::Boolean(b) = self {
+            *b
+        } else {
+            true
+        }
+    }
+}