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fx.go
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fx.go
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// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package avm
import (
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/vms/components/avax"
"github.com/ava-labs/avalanchego/vms/components/verify"
"github.com/ava-labs/avalanchego/vms/nftfx"
"github.com/ava-labs/avalanchego/vms/propertyfx"
"github.com/ava-labs/avalanchego/vms/secp256k1fx"
)
var (
_ Fx = &secp256k1fx.Fx{}
_ Fx = &nftfx.Fx{}
_ Fx = &propertyfx.Fx{}
)
type parsedFx struct {
ID ids.ID
Fx Fx
}
// Fx is the interface a feature extension must implement to support the AVM.
type Fx interface {
// Initialize this feature extension to be running under this VM. Should
// return an error if the VM is incompatible.
Initialize(vm interface{}) error
// Notify this Fx that the VM is in bootstrapping
Bootstrapping() error
// Notify this Fx that the VM is bootstrapped
Bootstrapped() error
// VerifyTransfer verifies that the specified transaction can spend the
// provided utxo with no restrictions on the destination. If the transaction
// can't spend the output based on the input and credential, a non-nil error
// should be returned.
VerifyTransfer(tx, in, cred, utxo interface{}) error
// VerifyOperation verifies that the specified transaction can spend the
// provided utxos conditioned on the result being restricted to the provided
// outputs. If the transaction can't spend the output based on the input and
// credential, a non-nil error should be returned.
VerifyOperation(tx, op, cred interface{}, utxos []interface{}) error
}
type FxOperation interface {
verify.Verifiable
snow.ContextInitializable
avax.Coster
Outs() []verify.State
}
type FxCredential struct {
FxID ids.ID `serialize:"false" json:"fxID"`
verify.Verifiable `serialize:"true" json:"credential"`
}