text: package codec
  
  import (
  	"github.com/gogo/protobuf/proto"
  
  	"github.com/cosmos/cosmos-sdk/codec/types"
  )
  
  type (
  	// Marshaler defines the interface module codecs must implement in order to support
  	// backwards compatibility with Amino while allowing custom Protobuf-based
  	// serialization. Note, Amino can still be used without any dependency on
  	// Protobuf. There are two typical implementations that fulfill this contract:
  	//
  	// 1. AminoCodec: Provides full Amino serialization compatibility.
  	// 2. ProtoCodec: Provides full Protobuf serialization compatibility.
  	Marshaler interface {
  		BinaryMarshaler
  		JSONMarshaler
  	}
  
  	BinaryMarshaler interface {
  		MarshalBinaryBare(o ProtoMarshaler) ([]byte, error)
  		MustMarshalBinaryBare(o ProtoMarshaler) []byte
  
  		MarshalBinaryLengthPrefixed(o ProtoMarshaler) ([]byte, error)
  		MustMarshalBinaryLengthPrefixed(o ProtoMarshaler) []byte
  
  		UnmarshalBinaryBare(bz []byte, ptr ProtoMarshaler) error
  		MustUnmarshalBinaryBare(bz []byte, ptr ProtoMarshaler)
  
  		UnmarshalBinaryLengthPrefixed(bz []byte, ptr ProtoMarshaler) error
  		MustUnmarshalBinaryLengthPrefixed(bz []byte, ptr ProtoMarshaler)
  
  		types.AnyUnpacker
  	}
  
  	JSONMarshaler interface {
  		MarshalJSON(o proto.Message) ([]byte, error)
  		MustMarshalJSON(o proto.Message) []byte
  
  		UnmarshalJSON(bz []byte, ptr proto.Message) error
  		MustUnmarshalJSON(bz []byte, ptr proto.Message)
  	}
  
  	// ProtoMarshaler defines an interface a type must implement as protocol buffer
  	// defined message.
  	ProtoMarshaler interface {
  		proto.Message // for JSON serialization
  
  		Marshal() ([]byte, error)
  		MarshalTo(data []byte) (n int, err error)
  		MarshalToSizedBuffer(dAtA []byte) (int, error)
  		Size() int
  		Unmarshal(data []byte) error
  	}
  
  	// AminoMarshaler defines an interface where Amino marshalling can be
  	// overridden by custom marshalling.
  	AminoMarshaler interface {
  		MarshalAmino() ([]byte, error)
  		UnmarshalAmino([]byte) error
  		MarshalAminoJSON() ([]byte, error)
  		UnmarshalAminoJSON([]byte) error
  	}
  )
  