1 files changed, 4 insertions, 2 deletions
diff --git a/ast.h b/ast.h
index e5354ae..6b7c3d5 100644
--- a/ast.h
+++ b/ast.h
@@ -30,7 +30,7 @@ struct var_decl_node {
 struct lval_node {
     enum {
         LVAL_VAR_DECL,
-        LVAL_VAR_USE,
+        LVAL_VAR_REF,
     } type;
     union {
         struct var_ref_node _var_ref;
@@ -46,13 +46,14 @@ struct assign_node {
 
 struct expr_node {
     enum {
-        EXPR_EMPTY,
         EXPR_INT_LIT,
         EXPR_VAR_REF,
+        EXPR_ASSIGN,
     } type;
     union {
         struct int_lit_node _int_lit;
         struct var_ref_node _var_ref;
+        struct assign_node _assign;
     } as;
 };
 
@@ -73,6 +74,7 @@ struct return_node {
 
 struct stmt_node {
     enum {
+        STMT_EMPTY,
         STMT_EXPR,
         STMT_VAR_DECL,
         STMT_RETURN,