Add Inner Ring code

pkg/core/object/headers/enum.go

@@ -0,0 +1,63 @@
+package headers
+
+import (
+	"github.com/nspcc-dev/neofs-node/pkg/core/object"
+)
+
+// Header represents object extended header.
+//
+// It is a type alias of
+// github.com/nspcc-dev/neofs-node/pkg/core/object.ExtendedHeader.
+type Header = object.ExtendedHeader
+
+// Type represents extended header type.
+//
+// It is a type alias of
+// github.com/nspcc-dev/neofs-node/pkg/core/object.ExtendedHeaderType.
+type Type = object.ExtendedHeaderType
+
+const (
+	// this is the only place where this cast is appropriate,
+	// use object.TypeFromUint32 instead.
+	lowerUndefined = Type(iota) // lower unsupported Type value
+
+	// TypeLink is the type of object reference header.
+	TypeLink
+
+	// TypeUser is the of user key-value string header.
+	TypeUser
+
+	// TypeTransform is the type of transformation mark header.
+	TypeTransform
+
+	// TypeTombstone is the type of tombstone mark header.
+	TypeTombstone
+
+	// TypeSessionToken is the type of session token header.
+	TypeSessionToken
+
+	// TypeHomomorphicHash is the type of homomorphic hash header.
+	TypeHomomorphicHash
+
+	// TypePayloadChecksum is the type of payload checksum header.
+	TypePayloadChecksum
+
+	// TypeIntegrity is the type of integrity header.
+	TypeIntegrity
+
+	// TypeStorageGroup is the type of storage group header.
+	TypeStorageGroup
+
+	// TypePublicKey is the type of public key header.
+	TypePublicKey
+
+	upperUndefined // upper unsupported Type value
+)
+
+// SupportedType returns true if Type is
+// the known type of extended header. Each
+// supported type has named constant.
+func SupportedType(t Type) bool {
+	return object.TypesGT(t, lowerUndefined) &&
+		object.TypesLT(t, upperUndefined)
+}