evm

package
v1.6.0 Latest Latest
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 Go to latest Published: Oct 25, 2021 License: Apache-2.0 Imports: 30 Imported by: 4

Documentation

Index

Constants

View Source 
const (
	// CodeKVNameSpace is the bucket name for code
	CodeKVNameSpace = "Code"
	// ContractKVNameSpace is the bucket name for contract data storage
	ContractKVNameSpace = "Contract"
	// PreimageKVNameSpace is the bucket name for preimage data storage
	PreimageKVNameSpace = "Preimage"
)

Variables

View Source 
var (

	// ErrInconsistentNonce is the error that the nonce is different from executor's nonce
	ErrInconsistentNonce = errors.New("Nonce is not identical to executor nonce")
)

Functions

func CanTransfer 

func CanTransfer(db vm.StateDB, fromHash common.Address, balance *big.Int) bool

CanTransfer checks whether the from account has enough balance

func ExecuteContract 

func ExecuteContract(
	ctx context.Context,
	sm protocol.StateManager,
	execution *action.Execution,
	getBlockHash GetBlockHash,
	depositGasFunc DepositGas,
) ([]byte, *action.Receipt, error)

ExecuteContract processes a transfer which contains a contract

func MakeTransfer 

func MakeTransfer(db vm.StateDB, fromHash, toHash common.Address, amount *big.Int)

MakeTransfer transfers account

func SimulateExecution added in v1.0.0 

func SimulateExecution(
	ctx context.Context,
	sm protocol.StateManager,
	caller address.Address,
	ex *action.Execution,
	getBlockHash GetBlockHash,
) ([]byte, *action.Receipt, error)

SimulateExecution simulates the execution in evm

Types

type Contract 

type Contract interface {
	GetCommittedState(hash.Hash256) ([]byte, error)
	GetState(hash.Hash256) ([]byte, error)
	SetState(hash.Hash256, []byte) error
	GetCode() ([]byte, error)
	SetCode(hash.Hash256, []byte)
	SelfState() *state.Account
	Commit() error
	LoadRoot() error
	Iterator() (trie.Iterator, error)
	Snapshot() Contract
}

Contract is a special type of account with code and storage trie.

type DepositGas added in v1.0.0 

type DepositGas func(context.Context, protocol.StateManager, *big.Int) (*action.TransactionLog, error)

DepositGas deposits gas

type GetBlockHash added in v0.11.0 

type GetBlockHash func(uint64) (hash.Hash256, error)

GetBlockHash gets block hash by height

type Params 

type Params struct {
	// contains filtered or unexported fields
}

Params is the context and parameters

type SerializableBytes added in v0.11.0 

type SerializableBytes []byte

SerializableBytes defines a type of serializable bytes

func (*SerializableBytes) Deserialize added in v0.11.0 

func (sb *SerializableBytes) Deserialize(data []byte) error

Deserialize copies data into bytes

func (SerializableBytes) Serialize added in v0.11.0 

func (sb SerializableBytes) Serialize() ([]byte, error)

Serialize copies and return bytes

type StateDBAdapter 

type StateDBAdapter struct {
	// contains filtered or unexported fields
}

StateDBAdapter represents the state db adapter for evm to access iotx blockchain

func NewStateDBAdapter 

func NewStateDBAdapter(
	sm protocol.StateManager,
	blockHeight uint64,
	notFixTopicCopyBug bool,
	asyncContractTrie bool,
	fixSnapshotOrder bool,
	clearSnapshots bool,
	executionHash hash.Hash256,
	opts ...StateDBAdapterOption,
) *StateDBAdapter

NewStateDBAdapter creates a new state db with iotex blockchain

func (*StateDBAdapter) AccountState 

func (stateDB *StateDBAdapter) AccountState(encodedAddr string) (*state.Account, error)

AccountState returns an account state

func (*StateDBAdapter) AddAddressToAccessList added in v1.4.0 

func (stateDB *StateDBAdapter) AddAddressToAccessList(addr common.Address)

AddAddressToAccessList adds the given address to the access list. This operation is safe to perform even if the feature/fork is not active yet

func (*StateDBAdapter) AddBalance 

func (stateDB *StateDBAdapter) AddBalance(evmAddr common.Address, amount *big.Int)

AddBalance adds balance to account

func (*StateDBAdapter) AddLog 

func (stateDB *StateDBAdapter) AddLog(evmLog *types.Log)

AddLog adds log whose transaction amount is larger than 0

func (*StateDBAdapter) AddPreimage 

func (stateDB *StateDBAdapter) AddPreimage(hash common.Hash, preimage []byte)

AddPreimage adds the preimage of a hash

func (*StateDBAdapter) AddRefund 

func (stateDB *StateDBAdapter) AddRefund(gas uint64)

AddRefund adds refund

func (*StateDBAdapter) AddSlotToAccessList added in v1.4.0 

func (stateDB *StateDBAdapter) AddSlotToAccessList(addr common.Address, slot common.Hash)

AddSlotToAccessList adds the given (address,slot) to the access list. This operation is safe to perform even if the feature/fork is not active yet

func (*StateDBAdapter) AddressInAccessList added in v1.4.0 

func (stateDB *StateDBAdapter) AddressInAccessList(addr common.Address) bool

AddressInAccessList returns true if the given address is in the access list

func (*StateDBAdapter) CommitContracts added in v0.5.0 

func (stateDB *StateDBAdapter) CommitContracts() error

CommitContracts commits contract code to db and update pending contract account changes to trie

func (*StateDBAdapter) CreateAccount 

func (stateDB *StateDBAdapter) CreateAccount(evmAddr common.Address)

CreateAccount creates an account in iotx blockchain

func (*StateDBAdapter) Empty 

func (stateDB *StateDBAdapter) Empty(evmAddr common.Address) bool

Empty returns true if the the contract is empty

func (*StateDBAdapter) Error 

func (stateDB *StateDBAdapter) Error() error

Error returns the first stored error during evm contract execution

func (*StateDBAdapter) Exist 

func (stateDB *StateDBAdapter) Exist(evmAddr common.Address) bool

Exist checks the existence of an address

func (*StateDBAdapter) ForEachStorage 

func (stateDB *StateDBAdapter) ForEachStorage(addr common.Address, cb func(common.Hash, common.Hash) bool) error

ForEachStorage loops each storage

func (*StateDBAdapter) GetBalance 

func (stateDB *StateDBAdapter) GetBalance(evmAddr common.Address) *big.Int

GetBalance gets the balance of account

func (*StateDBAdapter) GetCode 

func (stateDB *StateDBAdapter) GetCode(evmAddr common.Address) []byte

GetCode returns contract's code

func (*StateDBAdapter) GetCodeHash 

func (stateDB *StateDBAdapter) GetCodeHash(evmAddr common.Address) common.Hash

GetCodeHash returns contract's code hash

func (*StateDBAdapter) GetCodeSize 

func (stateDB *StateDBAdapter) GetCodeSize(evmAddr common.Address) int

GetCodeSize gets the code size saved in hash

func (*StateDBAdapter) GetCommittedState added in v0.8.1 

func (stateDB *StateDBAdapter) GetCommittedState(evmAddr common.Address, k common.Hash) common.Hash

GetCommittedState gets committed state

func (*StateDBAdapter) GetNonce 

func (stateDB *StateDBAdapter) GetNonce(evmAddr common.Address) uint64

GetNonce gets the nonce of account

func (*StateDBAdapter) GetRefund 

func (stateDB *StateDBAdapter) GetRefund() uint64

GetRefund gets refund

func (*StateDBAdapter) GetState 

func (stateDB *StateDBAdapter) GetState(evmAddr common.Address, k common.Hash) common.Hash

GetState gets state

func (*StateDBAdapter) HasSuicided 

func (stateDB *StateDBAdapter) HasSuicided(evmAddr common.Address) bool

HasSuicided returns whether the contract has been killed

func (*StateDBAdapter) InitNonce added in v1.2.0 

func (stateDB *StateDBAdapter) InitNonce() uint64

InitNonce returns the init nonce of an account

func (*StateDBAdapter) Logs 

func (stateDB *StateDBAdapter) Logs() []*action.Log

Logs returns the logs

func (*StateDBAdapter) PrepareAccessList added in v1.4.0 

func (stateDB *StateDBAdapter) PrepareAccessList(sender common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList)

PrepareAccessList handles the preparatory steps for executing a state transition with regards to both EIP-2929 and EIP-2930:

- Add sender to access list (2929) - Add destination to access list (2929) - Add precompiles to access list (2929) - Add the contents of the optional tx access list (2930)

This method should only be called if Berlin/2929+2930 is applicable at the current number.

func (*StateDBAdapter) RevertToSnapshot 

func (stateDB *StateDBAdapter) RevertToSnapshot(snapshot int)

RevertToSnapshot reverts the state factory to the state at a given snapshot

func (*StateDBAdapter) SetCode 

func (stateDB *StateDBAdapter) SetCode(evmAddr common.Address, code []byte)

SetCode sets contract's code

func (*StateDBAdapter) SetNonce 

func (stateDB *StateDBAdapter) SetNonce(evmAddr common.Address, nonce uint64)

SetNonce sets the nonce of account

func (*StateDBAdapter) SetState 

func (stateDB *StateDBAdapter) SetState(evmAddr common.Address, k, v common.Hash)

SetState sets state

func (*StateDBAdapter) SlotInAccessList added in v1.4.0 

func (stateDB *StateDBAdapter) SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool)

SlotInAccessList returns true if the given (address, slot)-tuple is in the access list

func (*StateDBAdapter) Snapshot 

func (stateDB *StateDBAdapter) Snapshot() int

Snapshot returns the snapshot id

func (*StateDBAdapter) SubBalance 

func (stateDB *StateDBAdapter) SubBalance(evmAddr common.Address, amount *big.Int)

SubBalance subtracts balance from account

func (*StateDBAdapter) SubRefund added in v0.8.1 

func (stateDB *StateDBAdapter) SubRefund(gas uint64)

SubRefund subtracts refund

func (*StateDBAdapter) Suicide 

func (stateDB *StateDBAdapter) Suicide(evmAddr common.Address) bool

Suicide kills the contract

func (*StateDBAdapter) TransactionLogs added in v1.1.0 

func (stateDB *StateDBAdapter) TransactionLogs() []*action.TransactionLog

TransactionLogs returns the transaction logs

type StateDBAdapterOption added in v1.2.0 

type StateDBAdapterOption func(*StateDBAdapter) error

StateDBAdapterOption set StateDBAdapter construction param

func SortCachedContractsOption added in v1.2.0 

func SortCachedContractsOption() StateDBAdapterOption

SortCachedContractsOption set sort cached contracts as true

func UsePendingNonceOption added in v1.2.0 

func UsePendingNonceOption() StateDBAdapterOption

UsePendingNonceOption set sort cached contracts as true

Source Files

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