1 files changed, 24 insertions, 4 deletions
diff --git a/src/com/craftinginterpreters/lox/Interpreter.java b/src/com/craftinginterpreters/lox/Interpreter.java
index 24cf1c0..b8ba090 100644
--- a/src/com/craftinginterpreters/lox/Interpreter.java
+++ b/src/com/craftinginterpreters/lox/Interpreter.java
@@ -1,6 +1,8 @@
 package com.craftinginterpreters.lox;
 
-class Interpreter implements Expr.Visitor<Object> {
+import java.util.List;
+
+class Interpreter implements Expr.Visitor<Object>, Stmt.Visitor<Void> {
     @Override
     public Object visitLiteralExpr(Expr.Literal expr) {
         return expr.value;
@@ -76,6 +78,23 @@ class Interpreter implements Expr.Visitor<Object> {
         return expr.accept(this);
     }
 
+    private void execute(Stmt stmt) {
+        stmt.accept(this);
+    }
+
+    @Override
+    public Void visitExpressionStmt(Stmt.Expression stmt) {
+        evaluate(stmt.expression);
+        return null;
+    }
+
+    @Override
+    public Void visitPrintStmt(Stmt.Print stmt) {
+        Object value = evaluate(stmt.expression);
+        System.out.println(stringify(value));
+        return null;
+    }
+
     @Override
     public Object visitBinaryExpr(Expr.Binary expr) {
         Object left = evaluate(expr.left);
@@ -123,10 +142,11 @@ class Interpreter implements Expr.Visitor<Object> {
         return null;
     }
 
-    public void interpret(Expr expression) {
+    public void interpret(List<Stmt> statements) {
         try {
-            Object value = evaluate(expression);
-            System.out.println(stringify(value));
+            for (Stmt statement : statements) {
+                execute(statement);
+            }
         } catch (RuntimeError error) {
             Lox.runtimeError(error);
         }