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[SXSI/xpathcomp.git] / tree.mli

diff --git a/tree.mli b/tree.mli
index eb13139..43e8ff7 100644 (file)
--- a/tree.mli
+++ b/tree.mli
@@ -17,8 +17,11 @@ sig
   val tag_pool : t -> Tag.pool
   val string : t -> string
   val descr : t -> descr
+  val is_node : t -> bool
   val left : t -> t
   val right : t -> t
+  val first_child : t -> t
+  val next_sibling : t -> t
   val parent : t -> t
   val id : t -> int
   val tag : t -> Tag.t