1 package treeprint
2
3 import (
4 "reflect"
5 "strings"
6 )
7
8 func isEmpty(v *reflect.Value) bool {
9 switch v.Kind() {
10 case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
11 return v.Len() == 0
12 case reflect.Bool:
13 return !v.Bool()
14 case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
15 return v.Int() == 0
16 case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
17 return v.Uint() == 0
18 case reflect.Float32, reflect.Float64:
19 return v.Float() == 0
20 case reflect.Interface, reflect.Ptr:
21 return v.IsNil()
22 }
23 return false
24 }
25
26 func tagSpec(tag string) (name string, omit bool) {
27 parts := strings.Split(tag, ",")
28 if len(parts) < 2 {
29 return tag, false
30 }
31 if parts[1] == "omitempty" {
32 return parts[0], true
33 }
34 return parts[0], false
35 }
36
37 func filterTags(tag reflect.StructTag) string {
38 tags := strings.Split(string(tag), " ")
39 filtered := make([]string, 0, len(tags))
40 for i := range tags {
41 if strings.HasPrefix(tags[i], "tree:") {
42 continue
43 }
44 filtered = append(filtered, tags[i])
45 }
46 return strings.Join(filtered, " ")
47 }
48
View as plain text