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package binstruct
import (
"encoding"
"fmt"
"reflect"
)
type Marshaler = encoding.BinaryMarshaler
func Marshal(obj any) ([]byte, error) {
if mar, ok := obj.(Marshaler); ok {
return mar.MarshalBinary()
}
return MarshalWithoutInterface(obj)
}
func MarshalWithoutInterface(obj any) ([]byte, error) {
val := reflect.ValueOf(obj)
switch val.Kind() {
case reflect.Uint8, reflect.Int8, reflect.Uint16, reflect.Int16, reflect.Uint32, reflect.Int32, reflect.Uint64, reflect.Int64:
typ := intKind2Type[val.Kind()]
return val.Convert(typ).Interface().(Marshaler).MarshalBinary()
case reflect.Ptr:
return Marshal(val.Elem().Interface())
case reflect.Array:
var ret []byte
for i := 0; i < val.Len(); i++ {
bs, err := Marshal(val.Index(i).Interface())
ret = append(ret, bs...)
if err != nil {
return ret, err
}
}
return ret, nil
case reflect.Struct:
return getStructHandler(val.Type()).Marshal(val)
default:
panic(fmt.Errorf("type=%v does not implement binfmt.Marshaler and kind=%v is not a supported statically-sized kind",
val.Type(), val.Kind()))
}
}
|
