<h1 align="center">How to Use Other API in Smart Contract</h1>
<p align="center" class="version">Version 0.1</p>
1. Introduction
| API | Return Value | Description |
|---|---|---|
| GetExecutingScriptHash | bytearray | Get the hash of a script of a smart contract |
| GetCallingScriptHash | bytearray | Get the address of the contract caller |
| RegisterAction | Notify structure | Push notification |
For more details, you can view the API-doc and the source code here.
2. How to use ExecutionEngine
2.1 Import
from ontology.interop.System.ExecutionEngine import GetExecutingScriptHash, GetCallingScriptHash
2.2 GetExecutingScriptHash
from ontology.interop.System.ExecutionEngine import GetExecutingScriptHash, GetCallingScriptHash
def Main(operation, args):
if operation == "get_contract_hash":
return get_contract_hash()
return False
def get_contract_hash():
return GetExecutingScriptHash()
2.3 GetCallingScriptHash
from ontology.interop.System.ExecutionEngine import GetExecutingScriptHash, GetCallingScriptHash
def Main(operation, args):
if operation == "GetCallingScriptHash_test1":
return GetCallingScriptHash_test1()
if operation == "GetCallingScriptHash_test2":
return GetCallingScriptHash_test2()
return False
def GetCallingScriptHash_test1():
return GetCallingScriptHash()
def GetCallingScriptHash_test2():
return GetCallingScriptHash()
3. How to use Action
3.1 Import
from ontology.interop.System.Action import RegisterAction
3.2 RegisterAction
RegisterAction is used for push events.
params format: string + multiple params
from ontology.interop.System.Action import RegisterAction
Transfer = RegisterAction('transfer_test', 'a', 'b', 'c')
Refund = RegisterAction('refund_test', 'to', 'amount')
def Main(operation, args):
if operation == "test1":
return test1()
if operation =="test2":
return test2()
return False
def test1():
a = 3
b = 8
c = a + b
Transfer(a, b, c)
return True
def test2():
to = 'somebody'
amount = 52
Refund(to, amount)
return True
