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structs_tag.go
61 lines (58 loc) · 1.21 KB
/
structs_tag.go
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package structs
import (
"reflect"
)
// tag映射字段名
func TagMapName(structPtr interface{}, priority []string, recursive bool) (map[string]string, error) {
tagMap, err := TagMapField(structPtr, priority, recursive)
if err != nil {
return nil, err
}
m := make(map[string]string, len(tagMap))
for k, v := range tagMap {
m[k] = v.Name()
}
return m, nil
}
// 获取priority中的tagName映射字段
func TagMapField(structPtr interface{}, priority []string, recursive bool) (map[string]IField, error) {
tagMap := make(map[string]IField)
structObj, err := New(structPtr)
if err != nil {
return nil, err
}
fields := structObj.Fields()
tag := ""
for _, field := range fields {
tag = ""
for _, p := range priority {
tag = field.Tag().Get(p).Value()
if tag != "" {
break
}
}
if tag != "" {
tagMap[tag] = field
}
if recursive {
rv := field.Type()
kind := rv.Kind()
if kind == reflect.Ptr {
rv = rv.Elem()
kind = rv.Kind()
}
if kind == reflect.Struct {
mMaps, err := TagMapField(rv, priority, true)
if err != nil {
continue
}
for k, v := range mMaps {
if _, ok := tagMap[k]; !ok {
tagMap[k] = v
}
}
}
}
}
return tagMap, nil
}