neoneo-go/pkg/interop/contract/contract.go
Evgenii Stratonikov 1c0c331e25 core: update System.Contract.Call syscall
1. Remove `System.Contract.CallEx`.
2. Extend number of parameters.
3. Add return value count to `VM.Context`.
2021-01-14 18:23:36 +03:00

48 lines
1.5 KiB
Go

/*
Package contract provides functions to work with contracts.
*/
package contract
import "github.com/nspcc-dev/neo-go/pkg/interop"
// CallFlag specifies valid call flags.
type CallFlag byte
// Using `smartcontract` package from compiled contract requires moderate
// compiler refactoring, thus all flags are mirrored here.
const (
ReadStates CallFlag = 1 << iota
WriteStates
AllowCall
AllowNotify
States = ReadStates | WriteStates
ReadOnly = ReadStates | AllowCall
All = States | AllowCall | AllowNotify
NoneFlag CallFlag = 0
)
// IsStandard checks if contract with provided hash is a standard signature/multisig contract.
// This function uses `System.Contract.IsStandard` syscall.
func IsStandard(h interop.Hash160) bool {
return false
}
// CreateStandardAccount calculates script hash of a given public key.
// This function uses `System.Contract.CreateStandardAccount` syscall.
func CreateStandardAccount(pub interop.PublicKey) []byte {
return nil
}
// GetCallFlags returns calling flags which execution context was created with.
// This function uses `System.Contract.GetCallFlags` syscall.
func GetCallFlags() int64 {
return 0
}
// Call 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.Call` syscall.
func Call(scriptHash interop.Hash160, method string, f CallFlag, args ...interface{}) interface{} {
return nil
}