// (c) 2023 Lux Industries, Inc. All rights reserved.
// See the file LICENSE for licensing terms.

package stateupgrade

import (
	"math/big"

	"github.com/luxfi/geth/common"
	"github.com/holiman/uint256"
)

// StateDB is the interface for accessing EVM state in state upgrades
type StateDB interface {
	SetState(common.Address, common.Hash, common.Hash)
	SetCode(common.Address, []byte)
	AddBalance(common.Address, *uint256.Int)

	GetNonce(common.Address) uint64
	SetNonce(common.Address, uint64)

	CreateAccount(common.Address)
	Exist(common.Address) bool
}

// ChainContext defines an interface that provides information to a state upgrade
// about the chain configuration.
type ChainContext interface {
	IsEIP158(num *big.Int) bool
}

// BlockContext defines an interface that provides information to a state upgrade
// about the block that activates the upgrade.
type BlockContext interface {
	Number() *big.Int
}