1 files changed, 22 insertions, 9 deletions
diff --git a/src/com/craftinginterpreters/lox/Interpreter.java b/src/com/craftinginterpreters/lox/Interpreter.java
index 407c537..4549e11 100644
--- a/src/com/craftinginterpreters/lox/Interpreter.java
+++ b/src/com/craftinginterpreters/lox/Interpreter.java
@@ -9,17 +9,21 @@ class Interpreter implements Expr.Visitor<Object>, Stmt.Visitor<Void> {
 
     Interpreter() {
         globals.define("clock", new LoxCallable() {
-                @Override
-                public int arity() { return 0; }
+            @Override
+            public int arity() {
+                return 0;
+            }
 
-                @Override
-                public Object call(Interpreter interpreter, List<Object> arguments) {
-                    return (double)System.currentTimeMillis() / 1000.0;
-                }
+            @Override
+            public Object call(Interpreter interpreter, List<Object> arguments) {
+                return (double) System.currentTimeMillis() / 1000.0;
+            }
 
-                @Override
-                public String toString() { return "<native fn>"; }
-            });
+            @Override
+            public String toString() {
+                return "<native fn>";
+            }
+        });
     }
 
     @Override
@@ -173,6 +177,15 @@ class Interpreter implements Expr.Visitor<Object>, Stmt.Visitor<Void> {
     }
 
     @Override
+    public Void visitReturnStmt(Stmt.Return stmt) {
+        Object value = null;
+        if (stmt.value != null)
+            value = evaluate(stmt.value);
+
+        throw new Return(value);
+    }
+
+    @Override
     public Void visitVarStmt(Stmt.Var stmt) {
         Object value = null;
         if (stmt.initializer != null) {