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insert_after.go
134 lines (126 loc) · 3.15 KB
/
insert_after.go
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/**
* @license
* Copyright 2020 Dynatrace LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package settings
import (
"reflect"
)
func HasInsertAfter(settings Settings) bool {
if settings == nil {
return false
}
pInsertAfterField := getInsertAfterField(settings)
if pInsertAfterField == nil {
return false
}
insertAfterField := *pInsertAfterField
if !insertAfterField.IsValid() {
return false
}
return (insertAfterField.Type() == stringType) || (insertAfterField.Type() == stringPointerType)
}
func SetInsertAfter(settings Settings, insertAfter string) {
if settings == nil {
return
}
pInsertAfterField := getInsertAfterField(settings)
if pInsertAfterField == nil {
return
}
insertAfterField := *pInsertAfterField
if !insertAfterField.IsValid() {
return
}
if insertAfterField.Type() == stringType {
insertAfterField.Set(reflect.ValueOf(insertAfter))
} else if insertAfterField.Type() == stringPointerType {
insertAfterField.Set(reflect.ValueOf(&insertAfter))
}
}
func GetInsertAfter(settings Settings) *string {
if settings == nil {
return nil
}
pinsertAfterField := getInsertAfterField(settings)
if pinsertAfterField == nil {
return nil
}
insertAfterField := *pinsertAfterField
if !insertAfterField.IsValid() {
return nil
}
if insertAfterField.Type() == stringType {
untypedinsertAfterValue := insertAfterField.Interface()
if untypedinsertAfterValue == nil {
return nil
}
if pinsertAfterValue, ok := untypedinsertAfterValue.(*string); ok {
if pinsertAfterValue == nil {
return nil
}
insertAfterValue := *pinsertAfterValue
return &insertAfterValue
}
if ppinsertAfterValue, ok := untypedinsertAfterValue.(**string); ok {
if ppinsertAfterValue == nil {
return nil
}
pinsertAfterValue := *ppinsertAfterValue
if pinsertAfterValue == nil {
return nil
}
insertAfterValue := *pinsertAfterValue
return &insertAfterValue
}
if insertAfterValue, ok := untypedinsertAfterValue.(string); ok {
return &insertAfterValue
}
}
return nil
}
func ClearInsertAfter(v any) {
if v == nil {
return
}
if pField := getInsertAfterField(v); pField != nil {
field := *pField
if field.IsValid() {
switch field.Type() {
case stringPointerType:
var nilstr *string
field.Set(reflect.ValueOf(nilstr))
case stringType:
var s string
field.Set(reflect.ValueOf(s))
}
}
}
}
func getInsertAfterField(settings any) *reflect.Value {
rv := unref(reflect.ValueOf(settings))
if !rv.IsValid() {
return nil
}
t := rv.Type()
for idx := 0; idx < t.NumField(); idx++ {
tField := t.Field(idx)
if tField.Name == "InsertAfter" {
vField := rv.Field(idx)
return &vField
}
}
return nil
}