kubernetes/vendor/google.golang.org/protobuf/internal/encoding/messageset/messageset.go

const FieldItem …

const FieldTypeID …

const FieldMessage …

const ExtensionName …

// IsMessageSet returns whether the message uses the MessageSet wire format.
func IsMessageSet(md protoreflect.MessageDescriptor) bool { … }

// IsMessageSetExtension reports this field properly extends a MessageSet.
func IsMessageSetExtension(fd protoreflect.FieldDescriptor) bool { … }

// SizeField returns the size of a MessageSet item field containing an extension
// with the given field number, not counting the contents of the message subfield.
func SizeField(num protowire.Number) int { … }

// Unmarshal parses a MessageSet.
//
// It calls fn with the type ID and value of each item in the MessageSet.
// Unknown fields are discarded.
//
// If wantLen is true, the item values include the varint length prefix.
// This is ugly, but simplifies the fast-path decoder in internal/impl.
func Unmarshal(b []byte, wantLen bool, fn func(typeID protowire.Number, value []byte) error) error { … }

// ConsumeFieldValue parses b as a MessageSet item field value until and including
// the trailing end group marker. It assumes the start group tag has already been parsed.
// It returns the contents of the type_id and message subfields and the total
// item length.
//
// If wantLen is true, the returned message value includes the length prefix.
func ConsumeFieldValue(b []byte, wantLen bool) (typeid protowire.Number, message []byte, n int, err error) { … }

// AppendFieldStart appends the start of a MessageSet item field containing
// an extension with the given number. The caller must add the message
// subfield (including the tag).
func AppendFieldStart(b []byte, num protowire.Number) []byte { … }

// AppendFieldEnd appends the trailing end group marker for a MessageSet item field.
func AppendFieldEnd(b []byte) []byte { … }

// SizeUnknown returns the size of an unknown fields section in MessageSet format.
//
// See AppendUnknown.
func SizeUnknown(unknown []byte) (size int) { … }

// AppendUnknown appends unknown fields to b in MessageSet format.
//
// For historic reasons, unresolved items in a MessageSet are stored in a
// message's unknown fields section in non-MessageSet format. That is, an
// unknown item with typeID T and value V appears in the unknown fields as
// a field with number T and value V.
//
// This function converts the unknown fields back into MessageSet form.
func AppendUnknown(b, unknown []byte) ([]byte, error) { … }