a.go

     1  // Copyright 2022 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package a
     6  
     7  type MarshalOptions struct {
     8  	*typedArshalers[MarshalOptions]
     9  }
    10  
    11  func Marshal(in interface{}) (out []byte, err error) {
    12  	return MarshalOptions{}.Marshal(in)
    13  }
    14  
    15  func (mo MarshalOptions) Marshal(in interface{}) (out []byte, err error) {
    16  	err = mo.MarshalNext(in)
    17  	return nil, err
    18  }
    19  
    20  func (mo MarshalOptions) MarshalNext(in interface{}) error {
    21  	a := new(arshaler)
    22  	a.marshal = func(MarshalOptions) error { return nil }
    23  	return a.marshal(mo)
    24  }
    25  
    26  type arshaler struct {
    27  	marshal func(MarshalOptions) error
    28  }
    29  
    30  type typedArshalers[Options any] struct {
    31  	m M
    32  }
    33  
    34  func (a *typedArshalers[Options]) lookup(fnc func(Options) error) (func(Options) error, bool) {
    35  	a.m.Load(nil)
    36  	return fnc, false
    37  }
    38  
    39  type M struct {}
    40  
    41  func (m *M) Load(key any) (value any, ok bool) {
    42  	return
    43  }
    44
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