fvm

package

v0.0.0-...-7ee7fde Latest Latest Go to latest Published: Jun 28, 2020 License: Apache-2.0 Imports: 13 Imported by: 6

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Repository

github.com/AsimovNetwork/asimov

README ¶

FVM based on EVM

Documentation ¶

Overview ¶

Package ethereum defines interfaces for interacting with Ethereum.

Index ¶

Variables
func CallReadOnlyFunction(from common.Address, block *asiutil.Block, chain ChainContext, ...) (ret []byte, leftOverGas uint64, err error)
func CanTransfer(view *txo.UtxoViewpoint, block *asiutil.Block, db fvm.StateDB, ...) bool
func GetHashFn(chain ChainContext) func(n uint64) common.Hash
func NewFVMContext(from common.Address, gasPrice *big.Int, block *asiutil.Block, ...) fvm.Context
func PackConstructorArgs(abiStr string, args ...interface{}) ([]byte, error)
func PackFunctionArgs(abiStr string, funcName string, args ...interface{}) ([]byte, error)
func Transfer(db fvm.StateDB, sender, recipient common.Address, amount *big.Int, ...)
func UnPackFunctionResult(abiStr string, v interface{}, funcName string, output []byte) error
func UnPackReadOnlyResult(abiStr string, funcName string, output []byte) (interface{}, error)
func UnpackEvent(abiStr string, eventName string, output []byte) (interface{}, error)
type ChainContext
type Subscription

Constants ¶

This section is empty.

Variables ¶

View Source

var NotFound = errors.New("not found")

NotFound is returned by API methods if the requested item does not exist.

Functions ¶

func CallReadOnlyFunction ¶

func CallReadOnlyFunction(
	from common.Address,
	block *asiutil.Block,
	chain ChainContext,
	stateDB fvm.StateDB,
	chainConfig *params.ChainConfig,
	gasLimit uint64,
	contractAddr common.Address,
	input []byte) (ret []byte, leftOverGas uint64, err error)

Call a readonly function of a contract

func CanTransfer ¶

func CanTransfer(view *txo.UtxoViewpoint, block *asiutil.Block, db fvm.StateDB, addr common.Address,
	amount *big.Int, vtx *virtualtx.VirtualTransaction, calculateBalanceFunc fvm.CalculateBalanceFunc, assets *protos.Asset) bool

CanTransfer checks whether there are enough funds in the address' account to make a transfer. This does not take the necessary gas in to account to make the transfer valid.

func GetHashFn ¶

func GetHashFn(chain ChainContext) func(n uint64) common.Hash

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func NewFVMContext ¶

func NewFVMContext(from common.Address, gasPrice *big.Int, block *asiutil.Block, chain ChainContext,
	view *txo.UtxoViewpoint,
	voteValue fvm.VoteValueFunc) fvm.Context

NewFVMContext creates a new context of FVM.

func PackConstructorArgs ¶

func PackConstructorArgs(abiStr string, args ...interface{}) ([]byte, error)

Pack constructor with arguments

func PackFunctionArgs ¶

func PackFunctionArgs(abiStr string, funcName string, args ...interface{}) ([]byte, error)

Pack function with arguments

func Transfer ¶

func Transfer(db fvm.StateDB, sender, recipient common.Address, amount *big.Int, vtx *virtualtx.VirtualTransaction, assets *protos.Asset)

Transfer subtracts amount from sender and adds amount to recipient using the given Db

func UnPackFunctionResult ¶

func UnPackFunctionResult(abiStr string, v interface{}, funcName string, output []byte) error

Unpack function execution result

func UnPackReadOnlyResult ¶

func UnPackReadOnlyResult(abiStr string, funcName string, output []byte) (interface{}, error)

Unpack readonly function execution result

func UnpackEvent ¶

func UnpackEvent(abiStr string, eventName string, output []byte) (interface{}, error)

Unpack event

Types ¶

type ChainContext ¶

type ChainContext interface {
	CalculateBalance(view *txo.UtxoViewpoint, block *asiutil.Block, address common.Address, assets *protos.Asset, voucherId int64) (int64, error)
	GetVmConfig() *fvm.Config
	GetTemplateWarehouseInfo() (common.Address, string)
	GetSystemContractInfo(delegateAddr common.Address) (common.Address, []byte, string)
	GetTemplateInfo(contractAddr []byte, gas uint64, block *asiutil.Block, stateDB fvm.StateDB, chainConfig *params.ChainConfig) (uint16, string, uint64)
	FetchTemplate(view *txo.UtxoViewpoint, hash *common.Hash) (uint16, []byte, []byte, []byte, []byte, error)
	BlockHashByHeight(int32) (*common.Hash, error)
}

ChainContext supports retrieving headers and consensus parameters from the current blockchain, which is used during transaction processing.

type Subscription ¶

type Subscription interface {
	// Unsubscribe cancels the sending of events to the data channel
	// and closes the error channel.
	Unsubscribe()
	// Err returns the subscription error channel. The error channel receives
	// a value if there is an issue with the subscription (e.g. the network connection
	// delivering the events has been closed). Only one value will ever be sent.
	// The error channel is closed by Unsubscribe.
	Err() <-chan error
}

Subscription represents an event subscription where events are delivered on a data channel.

Source Files ¶

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Directories ¶

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Path	Synopsis
abi Package abi implements the Ethereum ABI (Application Binary Interface).	Package abi implements the Ethereum ABI (Application Binary Interface).
core
state
types
virtualtx
vm Package virtual-machine implements the Ethereum Virtual Machine.	Package virtual-machine implements the Ethereum Virtual Machine.
event Package event deals with subscriptions to real-time events.	Package event deals with subscriptions to real-time events.
filter Package filter implements event filters.	Package filter implements event filters.
log Package log15 provides an opinionated, simple toolkit for best-practice logging that is both human and machine readable.	Package log15 provides an opinionated, simple toolkit for best-practice logging that is both human and machine readable.
term
math Package math provides integer math utilities.	Package math provides integer math utilities.
mclock Package mclock is a wrapper for a monotonic clock source	Package mclock is a wrapper for a monotonic clock source
metrics Go port of Coda Hale's Metrics library <https://github.com/rcrowley/go-metrics> Coda Hale's original work: <https://github.com/codahale/metrics>	Go port of Coda Hale's Metrics library <https://github.com/rcrowley/go-metrics> Coda Hale's original work: <https://github.com/codahale/metrics>
exp Hook go-metrics into expvar on any /debug/metrics request, load all vars from the registry into expvar, and execute regular expvar handler	Hook go-metrics into expvar on any /debug/metrics request, load all vars from the registry into expvar, and execute regular expvar handler
librato
params
rlp Package rlp implements the RLP serialization format.	Package rlp implements the RLP serialization format.
trie Package trie implements Merkle Patricia Tries.	Package trie implements Merkle Patricia Tries.