issue47713.go

     1  // run
     2  
     3  // Copyright 2021 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import (
    10  	"encoding"
    11  	"fmt"
    12  )
    13  
    14  type Seralizable interface {
    15  	encoding.BinaryMarshaler
    16  	encoding.BinaryUnmarshaler
    17  }
    18  
    19  type SerDeString string
    20  
    21  func (s *SerDeString) UnmarshalBinary(in []byte) error {
    22  	*s = SerDeString(in)
    23  	return nil
    24  }
    25  
    26  func (s SerDeString) MarshalBinary() ([]byte, error) {
    27  	return []byte(s), nil
    28  }
    29  
    30  
    31  type GenericSerializable[T Seralizable] struct {
    32  	Key string
    33  	Value T
    34  }
    35  
    36  func (g GenericSerializable[T]) Send() {
    37  	out, err := g.Value.MarshalBinary()
    38  	if err != nil {
    39  		panic("bad")
    40  	}
    41  	var newval SerDeString
    42  	newval.UnmarshalBinary(out)
    43  	fmt.Printf("Sent %s\n", newval)
    44  }
    45  
    46  func main() {
    47  	val := SerDeString("asdf")
    48  	x := GenericSerializable[*SerDeString]{
    49  		Value: &val,
    50  	}
    51  	x.Send()
    52  }
    53
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