def Runtime_Deserialize(self, engine: ExecutionEngine):
data = engine.CurrentContext.EvaluationStack.Pop().GetByteArray()
ms = StreamManager.GetStream(data=data)
reader = BinaryReader(ms)
try:
stack_item = StackItem.DeserializeStackItem(reader)
engine.CurrentContext.EvaluationStack.PushT(stack_item)
except Exception as e:
logger.error("Could not Deserialize stack item: %s " % e)
return False
return True
def Runtime_Deserialize(self, engine: ExecutionEngine):
data = engine.CurrentContext.EvaluationStack.Pop().GetByteArray()
ms = StreamManager.GetStream(data=data)
reader = BinaryReader(ms)
try:
stack_item = StackItem.DeserializeStackItem(reader)
engine.CurrentContext.EvaluationStack.PushT(stack_item)
except ValueError as e:
# can't deserialize type
return False
finally:
StreamManager.ReleaseStream(ms)
return True
def test_serialization_2(self):
output = Compiler.instance().load(
'%s/boa_test/example/demo/SerializationTest.py' %
TestContract.dirname).default
out = output.write()
tx, results, total_ops, engine = TestBuild(out, [2], self.GetWallet1(),
'02', '05')
self.assertEqual(len(results), 1)
self.assertEqual(
results[0].GetByteArray(),
bytearray(
b'\x80\x05\x00\x01a\x02\x01\x03\x80\x03\x00\x01j\x02\x01\x03\x02\x01\x05\x00\x02jk\x00\x07lmnopqr'
))
stream = StreamManager.GetStream(results[0].GetByteArray())
reader = BinaryReader(stream)
stack_item = StackItem.DeserializeStackItem(reader)
self.assertIsInstance(stack_item, Array)
self.assertEqual(stack_item.Count, 5)
self.assertEqual(stack_item.GetArray()[-1].GetString(), 'lmnopqr')
def test_serialize_integer(self):
# create integer, serialize it via state reader
my_integer = StackItem.New(1234)
self.engine.EvaluationStack.PushT(my_integer)
self.state_reader.Runtime_Serialize(self.engine)
self.assertEqual(len(self.engine.EvaluationStack.Items), 1)
# we will preview what will be pushed onto the stack
existing = self.engine.EvaluationStack.Peek(0)
ms = StreamManager.GetStream(existing.GetByteArray())
reader = BinaryReader(ms)
result = StackItem.DeserializeStackItem(reader)
# now run deserialized
res = self.state_reader.Runtime_Deserialize(self.engine)
self.assertEqual(res, True)
deserialized = self.engine.EvaluationStack.Pop()
self.assertEqual(deserialized, result)
self.assertEqual(deserialized, my_integer)
self.assertEqual(deserialized.GetBigInteger(), 1234)
