contract

Documentation

Overview

Package contract provides functions to work with contracts.

Index

• Constants
• func Call(scriptHash interop.Hash160, method string, args ...interface{}) interface{}
• func CallEx(f CallFlag, scriptHash interop.Hash160, method string, args ...interface{}) interface{}
• func CreateStandardAccount(pub interop.PublicKey) []byte
• func GetCallFlags() int64
• func IsStandard(h interop.Hash160) bool
• type CallFlag

Constants

const (
	ReadStates CallFlag = 1 << iota
	WriteStates
	AllowCall
	AllowNotify
	States            = ReadStates | WriteStates
	ReadOnly          = ReadStates | AllowCall
	All               = States | AllowCall | AllowNotify
	NoneFlag CallFlag = 0
)

Using `smartcontract` package from compiled contract requires moderate compiler refactoring, thus all flags are mirrored here.

Functions

func Call

func Call(scriptHash interop.Hash160, method string, args ...interface{}) interface{}

Call executes previously deployed blockchain contract with specified hash (20 bytes in BE form) using provided arguments. It returns whatever this contract returns. This function uses `System.Contract.Call` syscall.

func CallEx

func CallEx(f CallFlag, scriptHash interop.Hash160, method string, args ...interface{}) interface{}

CallEx executes previously deployed blockchain contract with specified hash (20 bytes in BE form) using provided arguments and call flags. It returns whatever this contract returns. This function uses `System.Contract.CallEx` syscall.

func CreateStandardAccount

func CreateStandardAccount(pub interop.PublicKey) []byte

CreateStandardAccount calculates script hash of a given public key. This function uses `System.Contract.CreateStandardAccount` syscall.

func GetCallFlags

func GetCallFlags() int64

GetCallFlags returns calling flags which execution context was created with. This function uses `System.Contract.GetCallFlags` syscall.

func IsStandard

func IsStandard(h interop.Hash160) bool

IsStandard checks if contract with provided hash is a standard signature/multisig contract. This function uses `System.Contract.IsStandard` syscall.

Types

type CallFlag

type CallFlag byte

CallFlag specifies valid call flags.