minor implementation for parser

(simple type and defn)

include/globals.h

@@ -31,7 +31,14 @@ typedef enum {
     ELSE,
 
     EOF_TOKEN,
-    ERROR
+    ERROR,
+    // for parser use
+    
+    PARSER_USE,
+
+    VOID,
+    
+
 } TokenType;
 
 typedef struct {
@@ -48,8 +55,39 @@ typedef struct {
 /**
  * AST Node Definitions
  */
+
+typedef enum {
+    NODE_PROGRAM,
+    NODE_DEFN,
+
+    NODE_TYPE_SIMPLE,
+    NODE_TYPE_COMPLEX,
+    NODE_TYPE_PARAM,
+    NODE_TYPE_OUT,
+    NODE_TYPE_STAR,
+
+    NODE_EXPR,
+    NODE_NUM,
+    NODE_ID,
+
+    NODE_PARAM_LIST,
+    NODE_PARAM,
+
+    NODE_LAMBDA,
+    NODE_COMPOUND,
+
+    NODE_STMT_RETURN,
+    NODE_STMT_EXPR,
+
+
+    
+} NodeKind;
+
 typedef struct ASTNode {
+    NodeKind kind;
     Token token;
+
     struct ASTNode **children;
-    size_t child_count;
+    size_t count;
+    size_t capacity;
 } ASTNode;