iotex-core: github.com/iotexproject/iotex-core/action/protocol/execution/evm Index | Files

package evm

import "github.com/iotexproject/iotex-core/action/protocol/execution/evm"

Index

Package Files

contract.go evm.go evmstatedbadapter.go kvstorefortrie.go serializablebytes.go

Constants

❖
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

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var (

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

func CanTransfer Uses

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

CanTransfer checks whether the from account has enough balance

func ExecuteContract Uses

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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 Uses

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

MakeTransfer transfers account

func SimulateExecution Uses

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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

type Contract Uses

❖
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
    RootHash() hash.Hash256
    LoadRoot() error
    Iterator() (trie.Iterator, error)
    Snapshot() Contract
}

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

type DepositGas Uses

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

DepositGas deposits gas

type GetBlockHash Uses

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

GetBlockHash gets block hash by height

type Params Uses

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

Params is the context and parameters

func NewParams Uses

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func NewParams(
    ctx context.Context,
    execution *action.Execution,
    stateDB *StateDBAdapter,
    getBlockHash GetBlockHash,
) (*Params, error)

NewParams creates a new context for use in the EVM.

type SerializableBytes Uses

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type SerializableBytes []byte

SerializableBytes defines a type of serializable bytes

func (*SerializableBytes) Deserialize Uses

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

Deserialize copies data into bytes

func (SerializableBytes) Serialize Uses

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

Serialize copies and return bytes

type StateDBAdapter Uses

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

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

func NewStateDBAdapter Uses

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func NewStateDBAdapter(
    sm protocol.StateManager,
    blockHeight uint64,
    notFixTopicCopyBug bool,
    executionHash hash.Hash256,
    opts ...StateDBOption,
) *StateDBAdapter

NewStateDBAdapter creates a new state db with iotex blockchain

func (*StateDBAdapter) AccountState Uses

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

AccountState returns an account state

func (*StateDBAdapter) AddBalance Uses

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

AddBalance adds balance to account

func (*StateDBAdapter) AddLog Uses

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

AddLog adds log

func (*StateDBAdapter) AddPreimage Uses

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

AddPreimage adds the preimage of a hash

func (*StateDBAdapter) AddRefund Uses

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func (stateDB *StateDBAdapter) AddRefund(gas uint64)

AddRefund adds refund

func (*StateDBAdapter) CommitContracts Uses

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func (stateDB *StateDBAdapter) CommitContracts() error

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

func (*StateDBAdapter) CreateAccount Uses

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

CreateAccount creates an account in iotx blockchain

func (*StateDBAdapter) Empty Uses

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

Empty returns true if the the contract is empty

func (*StateDBAdapter) Error Uses

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func (stateDB *StateDBAdapter) Error() error

Error returns the first stored error during evm contract execution

func (*StateDBAdapter) Exist Uses

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

Exist checks the existence of an address

func (*StateDBAdapter) ForEachStorage Uses

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

ForEachStorage loops each storage

func (*StateDBAdapter) GetBalance Uses

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

GetBalance gets the balance of account

func (*StateDBAdapter) GetCode Uses

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

GetCode returns contract's code

func (*StateDBAdapter) GetCodeHash Uses

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

GetCodeHash returns contract's code hash

func (*StateDBAdapter) GetCodeSize Uses

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

GetCodeSize gets the code size saved in hash

func (*StateDBAdapter) GetCommittedState Uses

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

GetCommittedState gets committed state

func (*StateDBAdapter) GetNonce Uses

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

GetNonce gets the nonce of account

func (*StateDBAdapter) GetRefund Uses

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func (stateDB *StateDBAdapter) GetRefund() uint64

GetRefund gets refund

func (*StateDBAdapter) GetState Uses

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

GetState gets state

func (*StateDBAdapter) HasSuicided Uses

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

HasSuicided returns whether the contract has been killed

func (*StateDBAdapter) Logs Uses

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

Logs returns the logs

func (*StateDBAdapter) RevertToSnapshot Uses

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func (stateDB *StateDBAdapter) RevertToSnapshot(snapshot int)

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

func (*StateDBAdapter) SetCode Uses

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

SetCode sets contract's code

func (*StateDBAdapter) SetNonce Uses

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

SetNonce sets the nonce of account

func (*StateDBAdapter) SetState Uses

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

SetState sets state

func (*StateDBAdapter) Snapshot Uses

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func (stateDB *StateDBAdapter) Snapshot() int

Snapshot returns the snapshot id

func (*StateDBAdapter) SubBalance Uses

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

SubBalance subtracts balance from account

func (*StateDBAdapter) SubRefund Uses

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func (stateDB *StateDBAdapter) SubRefund(gas uint64)

SubRefund subtracts refund

func (*StateDBAdapter) Suicide Uses

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

Suicide kills the contract

type StateDBOption Uses

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type StateDBOption func(*StateDBAdapter) error

StateDBOption set StateDBAdapter construction param

Package evm imports 26 packages (graph) and is imported by 5 packages. Updated 2020-04-05. Refresh now. Tools for package owners.