Move internal NODE_DEF_TEMP to parse.y

ast.c

@@ -678,7 +678,6 @@ node_children(rb_ast_t *ast, const NODE *node)
       case NODE_ERROR:
         return rb_ary_new_from_node_args(ast, 0);
       case NODE_ARGS_AUX:
-      case NODE_DEF_TEMP:
       case NODE_RIPPER:
       case NODE_RIPPER_VALUES:
       case NODE_LAST:

ext/objspace/objspace.c

@@ -493,7 +493,6 @@ count_nodes(int argc, VALUE *argv, VALUE os)
                 COUNT_NODE(NODE_ARYPTN);
                 COUNT_NODE(NODE_FNDPTN);
                 COUNT_NODE(NODE_HSHPTN);
-                COUNT_NODE(NODE_DEF_TEMP);
                 COUNT_NODE(NODE_RIPPER);
                 COUNT_NODE(NODE_RIPPER_VALUES);
                 COUNT_NODE(NODE_ERROR);

node_dump.c

@@ -1104,7 +1104,6 @@ dump_node(VALUE buf, VALUE indent, int comment, const NODE * node)
         return;
 
       case NODE_ARGS_AUX:
-      case NODE_DEF_TEMP:
       case NODE_RIPPER:
       case NODE_RIPPER_VALUES:
       case NODE_LAST:

parse.y

@@ -1080,6 +1080,12 @@ static rb_node_error_t *rb_node_error_new(struct parser_params *p, const YYLTYPE
 
 #endif
 
+enum internal_node_type {
+    NODE_INTERNAL_ONLY = NODE_LAST,
+    NODE_DEF_TEMP,
+    NODE_INTERNAL_LAST
+};
+
 /* This node is parse.y internal */
 typedef struct RNode_DEF_TEMP {
     NODE node;
@@ -12157,7 +12163,7 @@ rb_node_redo_new(struct parser_params *p, const YYLTYPE *loc)
 static rb_node_def_temp_t *
 rb_node_def_temp_new(struct parser_params *p, ID nd_vid, ID nd_mid, NODE *nd_head, long nd_nth, struct lex_context ctxt, const YYLTYPE *loc)
 {
-    rb_node_def_temp_t *n = NODE_NEWNODE(NODE_DEF_TEMP, rb_node_def_temp_t, loc);
+    rb_node_def_temp_t *n = NODE_NEWNODE((enum node_type)NODE_DEF_TEMP, rb_node_def_temp_t, loc);
     n->nd_vid = nd_vid;
     n->nd_mid = nd_mid;
     n->nd_head = nd_head;

rubyparser.h

@@ -131,7 +131,6 @@ enum node_type {
     NODE_HSHPTN,
     NODE_FNDPTN,
     NODE_ERROR,
-    NODE_DEF_TEMP,
     NODE_RIPPER,
     NODE_RIPPER_VALUES,
     NODE_LAST