lotus/chain/actors/builtin/system/actor.go.template

package system

import (
	"github.com/filecoin-project/lotus/chain/actors/adt"
	"github.com/filecoin-project/lotus/chain/actors"
	"golang.org/x/xerrors"
	"github.com/ipfs/go-cid"

{{range .versions}}
	builtin{{.}} "github.com/filecoin-project/specs-actors{{import .}}actors/builtin"
{{end}}
)

var (
	Address = builtin{{.latestVersion}}.SystemActorAddr
)

func MakeState(store adt.Store, av actors.Version) (State, error) {
	switch av {
{{range .versions}}
	case actors.Version{{.}}:
		return make{{.}}(store)
{{end}}
}
	return nil, xerrors.Errorf("unknown actor version %d", av)
}

func GetActorCodeID(av actors.Version) (cid.Cid, error) {
    if c, ok := actors.GetActorCodeID(av, "system"); ok {
       return c, nil
    }

	switch av {
{{range .versions}}
	case actors.Version{{.}}:
		return builtin{{.}}.SystemActorCodeID, nil
{{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

type State interface {
	GetState() interface{}
}