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type_node.go
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type_node.go
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package reftypes
import (
"github.com/insolar/assured-ledger/ledger-core/pulse"
"github.com/insolar/assured-ledger/ledger-core/reference"
"github.com/insolar/assured-ledger/ledger-core/vanilla/throw"
)
func NodeLocalRef(nodeHash reference.LocalHash) reference.Local {
return reference.NewLocal(pulse.Node, 0, nodeHash)
}
func NodeRef(nodeHash reference.LocalHash) reference.Global {
return reference.NewSelf(NodeLocalRef(nodeHash))
}
func NodeContractRef(nodeHash reference.LocalHash, locContract reference.LocalHolder) reference.Global {
local := locContract.GetLocal()
if !local.Pulse().IsTimePulse() {
panic(throw.IllegalValue())
}
return reference.New(NodeLocalRef(nodeHash), local)
}
func nodeLocalRefOf(loc reference.LocalHolder) (pulse.Number, reference.Local) {
local := loc.GetLocal()
switch pn := pulseZeroScope(local.GetHeader()); pn {
case pulse.Node:
return pn, local
case pulse.ExternalCall:
return pn, NodeLocalRef(local.IdentityHash())
default:
return pn, reference.Local{}
}
}
func NodeLocalRefOf(ref reference.Holder) reference.Local {
pn, base := nodeLocalRefOf(ref.GetBase())
local := ref.GetLocal()
switch {
case pn != pulse.Node:
// api call or empty
case local.Pulse().IsTimePulse():
// node contract
case base != local:
// otherwise it must be self ref
return reference.Local{}
}
return base
}
func UnpackNodeRefAsLocal(ref reference.Holder) (nodeRef reference.Local, err error) {
pn, base := nodeLocalRefOf(ref.GetBase())
local := ref.GetLocal()
switch {
case pn != pulse.Node:
err = ErrIllegalRefValue
case base != ref.GetLocal():
// not a node ref, may be a contract ref
err = ErrIllegalSelfRefValue
default:
return base, nil
}
err = newRefTypeErr(err, Node, base, local)
return reference.Local{}, err
}
func UnpackNodeRef(ref reference.Holder) (reference.Global, error) {
base, err := UnpackNodeRefAsLocal(ref)
if err != nil {
return reference.Global{}, err
}
return reference.NewSelf(base), nil
}
func UnpackNodeLocalRef(ref reference.LocalHolder) (reference.Local, error) {
pn, local := nodeLocalRefOf(ref.GetLocal())
switch {
case pn != pulse.Node:
return reference.Local{}, newRefTypeErr(ErrIllegalRefValue, Node, reference.Local{}, local)
default:
return local, nil
}
}
func UnpackNodeContractRef(ref reference.Holder) (nodeRef reference.Global, contractRef reference.Local, err error) {
pn, base := nodeLocalRefOf(ref.GetBase())
local := ref.GetLocal()
switch {
case pn != pulse.Node:
err = ErrIllegalRefValue
case local.Pulse().IsTimePulse():
return reference.NewSelf(base), local, nil
default:
err = ErrIllegalRefValue
}
err = newRefTypeErr(err, NodeContract, base, local)
return reference.Global{}, reference.Local{}, err
}
/*****************************************************/
var _ RefTypeDef = typeDefNode{}
type typeDefNode struct {}
func (typeDefNode) CanBeDerivedWith(_ pulse.Number, local reference.Local) bool {
return local.Pulse().IsTimePulse()
}
func (typeDefNode) RefFrom(base, local reference.Local) (reference.Global, error) {
if base := NodeLocalRefOf(reference.New(base, local)); !base.IsEmpty() {
return reference.NewSelf(base), nil
}
return reference.Global{}, newRefTypeErr(ErrIllegalRefValue, Node, base, local)
}
func (typeDefNode) Usage() Usage {
return UseAsBase|UseAsSelf|UseAsLocalValue
}
func (typeDefNode) VerifyGlobalRef(base, local reference.Local) error {
_, err := UnpackNodeRef(reference.New(base, local))
return err
}
func (typeDefNode) VerifyLocalRef(ref reference.Local) error {
_, err := UnpackNodeLocalRef(ref)
return err
}
func (typeDefNode) DetectSubType(base, local reference.Local) RefType {
switch {
case base == local:
return Node
case local.Pulse().IsTimePulse():
return NodeContract
}
return Invalid
}
var _ RefTypeDef = typeDefNodeContract{}
type typeDefNodeContract struct {}
func (typeDefNodeContract) CanBeDerivedWith(pulse.Number, reference.Local) bool {
return false
}
func (typeDefNodeContract) Usage() Usage {
return UseAsBase
}
func (v typeDefNodeContract) RefFrom(base, local reference.Local) (reference.Global, error) {
if err := v.VerifyGlobalRef(base, local); err != nil {
return reference.Global{}, err
}
return reference.New(base, local), nil
}
func (typeDefNodeContract) VerifyGlobalRef(base, local reference.Local) error {
_, _, err := UnpackNodeContractRef(reference.New(base, local))
return err
}
func (typeDefNodeContract) VerifyLocalRef(ref reference.Local) error {
panic(throw.Unsupported())
}
func (typeDefNodeContract) DetectSubType(_, _ reference.Local) RefType {
panic(throw.Unsupported()) // it is a sub type
}