waik: work with pointer

walk/walk.go

@@ -6,6 +6,11 @@ import (
 
 func Walk(x interface{}, fn func(string)) {
 	val := reflect.ValueOf(x)
+
+	if val.Kind() == reflect.Pointer {
+		val = val.Elem() // XXX: the object from the pointer
+	}
+
 	for i := 0; i < val.NumField(); i++ {
 		field := val.Field(i)
 

walk/walk_test.go

@@ -5,6 +5,14 @@ import (
 	"testing"
 )
 
+type Person struct {
+	Name    string
+	Profile struct {
+		Age  int
+		City string
+	}
+}
+
 func TestWalk(t *testing.T) {
 	cases := []struct {
 		Name          string
@@ -36,13 +44,15 @@ func TestWalk(t *testing.T) {
 		},
 		{
 			"nested fields",
-			struct {
-				Name    string
-				Profile struct {
-					Age  int
-					City string
-				}
-			}{"Chris", struct {
+			Person{"Chris", struct {
+				Age  int
+				City string
+			}{29, "London"}},
+			[]string{"Chris", "London"},
+		},
+		{
+			"pointer to things",
+			&Person{"Chris", struct {
 				Age  int
 				City string
 			}{29, "London"}},