69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
|
package bun
|
||
|
|
|
||
|
|
import "reflect"
|
||
|
|
|
||
|
|
func indirect(v reflect.Value) reflect.Value {
|
||
|
|
switch v.Kind() {
|
||
|
|
case reflect.Interface:
|
||
|
|
return indirect(v.Elem())
|
||
|
|
case reflect.Ptr:
|
||
|
|
return v.Elem()
|
||
|
|
default:
|
||
|
|
return v
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func walk(v reflect.Value, index []int, fn func(reflect.Value)) {
|
||
|
|
v = reflect.Indirect(v)
|
||
|
|
switch v.Kind() {
|
||
|
|
case reflect.Slice:
|
||
|
|
sliceLen := v.Len()
|
||
|
|
for i := 0; i < sliceLen; i++ {
|
||
|
|
visitField(v.Index(i), index, fn)
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
visitField(v, index, fn)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func visitField(v reflect.Value, index []int, fn func(reflect.Value)) {
|
||
|
|
v = reflect.Indirect(v)
|
||
|
|
if len(index) > 0 {
|
||
|
|
v = v.Field(index[0])
|
||
|
|
if v.Kind() == reflect.Ptr && v.IsNil() {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
walk(v, index[1:], fn)
|
||
|
|
} else {
|
||
|
|
fn(v)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func typeByIndex(t reflect.Type, index []int) reflect.Type {
|
||
|
|
for _, x := range index {
|
||
|
|
switch t.Kind() {
|
||
|
|
case reflect.Ptr:
|
||
|
|
t = t.Elem()
|
||
|
|
case reflect.Slice:
|
||
|
|
t = indirectType(t.Elem())
|
||
|
|
}
|
||
|
|
t = t.Field(x).Type
|
||
|
|
}
|
||
|
|
return indirectType(t)
|
||
|
|
}
|
||
|
|
|
||
|
|
func indirectType(t reflect.Type) reflect.Type {
|
||
|
|
if t.Kind() == reflect.Ptr {
|
||
|
|
t = t.Elem()
|
||
|
|
}
|
||
|
|
return t
|
||
|
|
}
|
||
|
|
|
||
|
|
func sliceElemType(v reflect.Value) reflect.Type {
|
||
|
|
elemType := v.Type().Elem()
|
||
|
|
if elemType.Kind() == reflect.Interface && v.Len() > 0 {
|
||
|
|
return indirect(v.Index(0).Elem()).Type()
|
||
|
|
}
|
||
|
|
return indirectType(elemType)
|
||
|
|
}
|