diff --git a/net/loveruby/cflat/compiler/CodeGenerator.java b/net/loveruby/cflat/compiler/CodeGenerator.java
new file mode 100644
index 0000000..7ef1eca
--- /dev/null
+++ b/net/loveruby/cflat/compiler/CodeGenerator.java
@@ -0,0 +1,5 @@
+package net.loveruby.cflat.compiler;
+
+public interface CodeGenerator {
+    String generate(net.loveruby.cflat.ir.IR ir);
+}