metainternal

type Function interface {
	Object

	// jctx is for options controlling transcoding short-long version during Long ID and legacyTypeNames->newTypeNames transition
	// pass nil if you do not know which options you need
	ReadResultTL1WriteResultJSON(jctx *basictl.JSONWriteContext, r []byte, w []byte) ([]byte, []byte, error) // combination of ReadResult(r) + WriteResultJSON(w). Returns new r, new w, plus error
	ReadResultJSONWriteResultTL1(jctx *basictl.JSONReadContext, r []byte, w []byte) ([]byte, []byte, error)  // combination of ReadResultJSON(r) + WriteResult(w). Returns new r, new w, plus error

}

type Object interface {
	TLName() string // returns type's TL name. For union, returns constructor name depending on actual union value
	TLTag() uint32  // returns type's TL tag. For union, returns constructor tag depending on actual union value
	String() string // returns type's representation for debugging (JSON for now)

	ReadTL1(w []byte) ([]byte, error)              // reads type's bare TL representation by consuming bytes from the start of w and returns remaining bytes, plus error
	ReadTL1Boxed(w []byte) ([]byte, error)         // same as Read, but reads/checks TLTag first (this method is general version of Write, use it only when you are working with interface)
	WriteTL1General(w []byte) ([]byte, error)      // same as Write, but has common signature (with error) for all objects, so can be called through interface
	WriteTL1BoxedGeneral(w []byte) ([]byte, error) // same as WriteBoxed, but has common signature (with error) for all objects, so can be called through interface

	MarshalJSON() ([]byte, error) // returns type's JSON representation, plus error
	UnmarshalJSON([]byte) error   // reads type's JSON representation

	ReadJSONGeneral(jctx *basictl.JSONReadContext, in *basictl.JsonLexer) error
	// like MarshalJSON, but appends to w and returns it
	// pass empty basictl.JSONWriteContext{} if you do not know which options you need
	WriteJSONGeneral(jctx *basictl.JSONWriteContext, w []byte) ([]byte, error)
}

type TLItem interface {
	TLTag() uint32
	TLName() string
	// true if has TL1 code generated
	HasTL1() bool
	// true if has TL2 code generated
	HasTL2() bool
	CreateObject() Object
	// used in TL generator tests only, do not use in product code
	CreateObjectBytes() Object

	IsFunction() bool
	CreateFunction() Function
	// used in TL generator tests only, do not use in product code
	CreateFunctionBytes() Function
	HasUnionTypesInResult() bool
	HasUnionTypesInArguments() bool
	// For transcoding short-long version during Long ID transition
	HasFunctionLong() bool
	CreateFunctionLong() Function

	// Annotations
	AnnotationAny() bool
	AnnotationInternal() bool
	AnnotationKphp() bool
	AnnotationRead() bool
	AnnotationReadwrite() bool
	AnnotationWrite() bool
}

type TLItemImpl struct {
	Tag         uint32
	Annotations uint32
	Name        string

	HaTL1 bool
	HaTL2 bool

	ResultTypeContainsUnionTypes    bool
	ArgumentsTypesContainUnionTypes bool

	// either CrObject != nil or CrFunction != nil for object/function respectively
	// also, CrFunctionLong can be != nil if there is long adapter (legacy to be removed soon)
	// also, CrObjectBytes, CrFunctionBytes, CrFunctionLongBytes
	// can be != nil independently, if factory_bytes is imported
	CrFunction          func() Function
	CrFunctionLong      func() Function
	CrObject            func() Object
	CrFunctionBytes     func() Function
	CrFunctionLongBytes func() Function
	CrObjectBytes       func() Object
}