42 lines
1021 B
Go
42 lines
1021 B
Go
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package dynamic
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import "reflect"
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// InheritStructValues merges the field value from the source struct to the dest struct.
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// Only fields with the same type and the same name will be updated.
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func InheritStructValues(dst, src interface{}) {
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if dst == nil {
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return
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}
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rtA := reflect.TypeOf(dst)
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srcStructType := reflect.TypeOf(src)
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rtA = rtA.Elem()
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srcStructType = srcStructType.Elem()
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for i := 0; i < rtA.NumField(); i++ {
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fieldType := rtA.Field(i)
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fieldName := fieldType.Name
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if !fieldType.IsExported() {
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continue
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}
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// if there is a field with the same name
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fieldSrcType, found := srcStructType.FieldByName(fieldName)
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if !found {
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continue
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}
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// ensure that the type is the same
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if fieldSrcType.Type == fieldType.Type {
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srcValue := reflect.ValueOf(src).Elem().FieldByName(fieldName)
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dstValue := reflect.ValueOf(dst).Elem().FieldByName(fieldName)
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if (fieldType.Type.Kind() == reflect.Ptr && dstValue.IsNil()) || dstValue.IsZero() {
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dstValue.Set(srcValue)
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}
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}
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}
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}
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