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¶
Index ¶
Constants ¶
const (
// DefaultBaseExecFee specifies default multiplier for opcode and syscall prices.
DefaultBaseExecFee = 30
)
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Context ¶
type Context struct {
Chain blockchainer.Blockchainer
Container crypto.Verifiable
Natives []Contract
Trigger trigger.Type
Block *block.Block
Tx *transaction.Transaction
DAO *dao.Cached
Notifications []state.NotificationEvent
Log *zap.Logger
VM *vm.VM
Functions [][]Function
// contains filtered or unexported fields
}
Context represents context in which interops are executed.
func NewContext ¶
func NewContext(trigger trigger.Type, bc blockchainer.Blockchainer, d dao.DAO, getContract func(dao.DAO, util.Uint160) (*state.Contract, error), natives []Contract, block *block.Block, tx *transaction.Transaction, log *zap.Logger) *Context
NewContext returns new interop context.
func (*Context) BaseExecFee ¶ added in v0.92.0
BaseExecFee represents factor to multiply syscall prices with.
func (*Context) GetContract ¶ added in v0.92.0
GetContract returns contract by its hash in current interop context.
func (*Context) GetFunction ¶ added in v0.91.0
GetFunction returns metadata for interop with the specified id.
type Contract ¶
type Contract interface {
Initialize(*Context) error
Metadata() *ContractMD
OnPersist(*Context) error
PostPersist(*Context) error
}
Contract is an interface for all native contracts.
type ContractMD ¶
type ContractMD struct {
Manifest manifest.Manifest
Name string
ContractID int32
Script []byte
Hash util.Uint160
Methods map[string]MethodAndPrice
}
ContractMD represents native contract instance.
func NewContractMD ¶
func NewContractMD(name string) *ContractMD
NewContractMD returns Contract with the specified list of methods.
func (*ContractMD) AddEvent ¶
func (c *ContractMD) AddEvent(name string, ps ...manifest.Parameter)
AddEvent adds new event to a native contract.
func (*ContractMD) AddMethod ¶
func (c *ContractMD) AddMethod(md *MethodAndPrice, desc *manifest.Method)
AddMethod adds new method to a native contract.
type Function ¶
type Function struct {
ID uint32
Name string
Func func(*Context) error
// DisallowCallback is true iff syscall can't be used in a callback.
DisallowCallback bool
// ParamCount is a number of function parameters.
ParamCount int
Price int64
// RequiredFlags is a set of flags which must be set during script invocations.
// Default value is NoneFlag i.e. no flags are required.
RequiredFlags smartcontract.CallFlag
}
Function binds function name, id with the function itself and price, it's supposed to be inited once for all interopContexts, so it doesn't use vm.InteropFuncPrice directly.
type MethodAndPrice ¶
type MethodAndPrice struct {
Func Method
MD *manifest.Method
Price int64
RequiredFlags smartcontract.CallFlag
}
MethodAndPrice is a native-contract method descriptor.
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