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

package account

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

	"github.com/filecoin-project/go-address"
	"github.com/filecoin-project/go-state-types/cbor"
	"github.com/ipfs/go-cid"

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

func init() {
{{range .versions}}
	builtin.RegisterActorState(builtin{{.}}.AccountActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
		return load{{.}}(store, root)
	})

	if c, ok := actors.GetActorCodeID(actors.Version{{.}}, "account"); ok {
    	builtin.RegisterActorState(c, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
			return load{{.}}(store, root)
		})
	}
{{end}}}

var Methods = builtin4.MethodsAccount

func Load(store adt.Store, act *types.Actor) (State, error) {
	if name, av, ok := actors.GetActorMetaByCode(act.Code); ok {
       if name != "account" {
          return nil, xerrors.Errorf("actor code is not account: %s", name)
       }

       switch av {
            {{range .versions}}
			case actors.Version{{.}}:
                 return load{{.}}(store, act.Head)
            {{end}}
            default:
                return nil, xerrors.Errorf("unknown actor version: %d", av)
       }
	}

	switch act.Code {
{{range .versions}}
	case builtin{{.}}.AccountActorCodeID:
		return load{{.}}(store, act.Head)
{{end}}
	}
	return nil, xerrors.Errorf("unknown actor code %s", act.Code)
}

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

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

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

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

type State interface {
	cbor.Marshaler

	PubkeyAddress() (address.Address, error)
	GetState() interface{}
}