Introduce NODE_LINE

`__LINE__` was managed by `NODE_LIT` with `Integer` object.
This commit introduces `NODE_LINE` so that

1. `__LINE__` is detectable from AST Node
2. Reduce dependency ruby object

1 files changed, 2 insertions, 0 deletions

diff --git a/ast.c b/ast.c
index 50a54a9f4b..33b2f61aa2 100644
--- a/ast.c
+++ b/ast.c
@@ -692,6 +692,8 @@ node_children(rb_ast_t *ast, const NODE *node)
                                         NEW_CHILD(ast, RNODE_HSHPTN(node)->nd_pkwargs),
                                         kwrest);
         }
+      case NODE_LINE:
+        return rb_ary_new_from_args(1, rb_node_line_lineno_val(node));
       case NODE_ERROR:
         return rb_ary_new_from_node_args(ast, 0);
       case NODE_ARGS_AUX: