1 files changed, 23 insertions, 0 deletions
diff --git a/eval.h b/eval.h
new file mode 100644
index 0000000..8b4a5f6
--- /dev/null
+++ b/eval.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include "ast.h"
+
+enum TypeKind
+{
+    KIND_VOID,
+    KIND_VALUE
+};
+
+struct Type
+{
+    enum TypeKind kind;
+    long number;
+};
+
+enum RunStatus
+{
+    RUN_DONE,
+    RUN_FAILED
+};
+
+enum RunStatus execute(const struct Node* statement);