minor changes for

include/ast_util.h

@@ -0,0 +1,3 @@
+#include "globals.h"
+
+ASTNode *ast_node_new(NodeKind kind, Token token);

include/globals.h

@@ -6,6 +6,8 @@
  * Token Definitions
  */
 typedef enum {
+    PROGRAM, /* use for syntax */
+
     LBRACK,
     RBRACK,
     LCURLY,
@@ -48,8 +50,29 @@ typedef struct {
 /**
  * AST Node Definitions
  */
+
+typedef enum NodeKind {
+    NODE_PROGRAM,
+    NODE_DEFN,
+    NODE_TYPE,
+    NODE_EXPR,
+    NODE_ATOM,
+    NODE_STMT,
+    NODE_BLOCK,
+    NODE_LAMBDA,
+    NODE_COMPOUND,
+    NODE_PARAMS
+
+    
+} NodeKind;
+
 typedef struct ASTNode {
+    NodeKind kind;
+
     Token token;
     struct ASTNode **children;
     size_t child_count;
+    size_t capacity;
+
+    
 } ASTNode;