diff --git a/main_test.go b/main_test.go
index bbcf85d..3bad7d4 100644
--- a/main_test.go
+++ b/main_test.go
@@ -54,7 +54,7 @@ type Node struct {
 	Value []rune // Name(Axis)::Value
 	Next  *Node
 	Sel   Selection
-	Pred  Predicates
+	Pred  []*Predicates
 }
 
 // compile 编译
@@ -100,6 +100,10 @@ func compile(spath string) (head *Node, tail *Node) {
 	return head, cur
 }
 
+func getPredicates(path []rune, limit int, ii *int, cur *Node) []*Predicates {
+	return nil
+}
+
 func getAxes(path []rune, limit int, ii *int, cur *Node) {
 	i := *ii
 
@@ -107,7 +111,10 @@ func getAxes(path []rune, limit int, ii *int, cur *Node) {
 		c := path[i]
 		switch c {
 		case '[':
+			cur.Pred = getPredicates(path, limit, ii, cur)
+			return
 		case '/':
+			return
 		case ':':
 			if path[i+1] == ':' {
 				i++
@@ -142,7 +149,6 @@ func getAxes(path []rune, limit int, ii *int, cur *Node) {
 
 func getAttributeName(path []rune, limit int, ii *int) []rune {
 	i := *ii
-
 	for start := i; i < limit; i++ {
 		if c, ok := Escape(path, &i); !ok {
 			switch {