mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-27 08:38:07 +00:00
protobuf: use async/await, make loads/dumps sync
This commit is contained in:
Jan Pochyla
parent
ec412c6da3
commit
be069a771b
@ -60,12 +60,13 @@ class UVarintType:
|
||||
value = shifted
|
||||
|
||||
@staticmethod
|
||||
def load(source):
|
||||
async def load(source):
|
||||
value, shift, quantum = 0, 0, 0x80
|
||||
while (quantum & 0x80) == 0x80:
|
||||
data = yield from source.read(1)
|
||||
quantum = data[0]
|
||||
value, shift = value + ((quantum & 0x7F) << shift), shift + 7
|
||||
buffer = await source.read(1)
|
||||
quantum = buffer[0]
|
||||
value = value + ((quantum & 0x7F) << shift)
|
||||
shift += 7
|
||||
return value
|
||||
|
||||
|
||||
@ -73,12 +74,12 @@ class BoolType:
|
||||
WIRE_TYPE = 0
|
||||
|
||||
@staticmethod
|
||||
def dump(target, value):
|
||||
yield from target.write('\x01' if value else '\x00')
|
||||
async def dump(target, value):
|
||||
await target.write(b'\x01' if value else b'\x00')
|
||||
|
||||
@staticmethod
|
||||
def load(source):
|
||||
varint = yield from UVarintType.load(source)
|
||||
async def load(source):
|
||||
varint = await UVarintType.load(source)
|
||||
return varint != 0
|
||||
|
||||
|
||||
@ -86,14 +87,14 @@ class BytesType:
|
||||
WIRE_TYPE = 2
|
||||
|
||||
@staticmethod
|
||||
def dump(target, value):
|
||||
yield from UVarintType.dump(target, len(value))
|
||||
yield from target.write(value)
|
||||
async def dump(target, value):
|
||||
await UVarintType.dump(target, len(value))
|
||||
await target.write(value)
|
||||
|
||||
@staticmethod
|
||||
def load(source):
|
||||
size = yield from UVarintType.load(source)
|
||||
data = yield from source.read(size)
|
||||
async def load(source):
|
||||
size = await UVarintType.load(source)
|
||||
data = await source.read(size)
|
||||
return data
|
||||
|
||||
|
||||
@ -101,12 +102,12 @@ class UnicodeType:
|
||||
WIRE_TYPE = 2
|
||||
|
||||
@staticmethod
|
||||
def dump(target, value):
|
||||
yield from BytesType.dump(target, bytes(value, 'utf-8'))
|
||||
async def dump(target, value):
|
||||
await BytesType.dump(target, bytes(value, 'utf-8'))
|
||||
|
||||
@staticmethod
|
||||
def load(source):
|
||||
data = yield from BytesType.load(source)
|
||||
async def load(source):
|
||||
data = await BytesType.load(source)
|
||||
return str(data, 'utf-8', 'strict')
|
||||
|
||||
|
||||
@ -121,14 +122,14 @@ class EmbeddedMessage:
|
||||
'''Creates a message of the underlying message type.'''
|
||||
return self.message_type()
|
||||
|
||||
def dump(self, target, value):
|
||||
buf = yield from self.message_type.dumps(value)
|
||||
yield from BytesType.dump(target, buf)
|
||||
async def dump(self, target, value):
|
||||
buf = self.message_type.dumps(value)
|
||||
await BytesType.dump(target, buf)
|
||||
|
||||
def load(self, target, source):
|
||||
emb_size = yield from UVarintType.load(source)
|
||||
async def load(self, target, source):
|
||||
emb_size = await UVarintType.load(source)
|
||||
emb_source = source.trim(emb_size)
|
||||
yield from self.message_type.load(emb_source, target)
|
||||
await self.message_type.load(emb_source, target)
|
||||
|
||||
|
||||
FLAG_SIMPLE = const(0)
|
||||
@ -202,10 +203,14 @@ class MessageType:
|
||||
|
||||
def dumps(self, value):
|
||||
target = StreamWriter()
|
||||
yield from self.dump(target, value)
|
||||
return target.buffer
|
||||
dumper = self.dump(target, value)
|
||||
try:
|
||||
while True:
|
||||
dumper.send(None)
|
||||
except (StopIteration, EOFError):
|
||||
return target.buffer
|
||||
|
||||
def dump(self, target, value):
|
||||
async def dump(self, target, value):
|
||||
if self is not value.message_type:
|
||||
raise TypeError('Incompatible type')
|
||||
for tag, field in self.__fields.items():
|
||||
@ -222,21 +227,40 @@ class MessageType:
|
||||
key = _pack_key(tag, field_type.WIRE_TYPE)
|
||||
# send the values sequentially
|
||||
for single_value in field_value:
|
||||
yield from UVarintType.dump(target, key)
|
||||
yield from field_type.dump(target, single_value)
|
||||
await UVarintType.dump(target, key)
|
||||
await field_type.dump(target, single_value)
|
||||
else:
|
||||
# single value
|
||||
yield from UVarintType.dump(target, _pack_key(tag, field_type.WIRE_TYPE))
|
||||
yield from field_type.dump(target, field_value)
|
||||
await UVarintType.dump(target, _pack_key(tag, field_type.WIRE_TYPE))
|
||||
await field_type.dump(target, field_value)
|
||||
|
||||
def load(self, target, source=None):
|
||||
def loads(self, value):
|
||||
result = None
|
||||
|
||||
def callback(message):
|
||||
nonlocal result
|
||||
result = message
|
||||
target = build_protobuf_message(self, callback)
|
||||
target.send(None)
|
||||
# TODO: avoid the copy!
|
||||
source = StreamReader(bytearray(value), len(value))
|
||||
loader = self.load(target, source)
|
||||
try:
|
||||
while True:
|
||||
loader.send(None)
|
||||
except (StopIteration, EOFError):
|
||||
if result is None:
|
||||
raise Exception('Failed to parse protobuf message')
|
||||
return result
|
||||
|
||||
async def load(self, target, source=None):
|
||||
if source is None:
|
||||
source = StreamReader()
|
||||
found_tags = set()
|
||||
|
||||
try:
|
||||
while True:
|
||||
key = yield from UVarintType.load(source)
|
||||
key = await UVarintType.load(source)
|
||||
tag, wire_type = _unpack_key(key)
|
||||
found_tags.add(tag)
|
||||
|
||||
@ -251,14 +275,14 @@ class MessageType:
|
||||
else:
|
||||
# unknown field, skip it
|
||||
field_type = {0: UVarintType, 2: BytesType}[wire_type]
|
||||
yield from field_type.load(source)
|
||||
await field_type.load(source)
|
||||
continue
|
||||
|
||||
if _is_scalar_type(field_type):
|
||||
field_value = yield from field_type.load(source)
|
||||
field_value = await field_type.load(source)
|
||||
target.send((field, field_value))
|
||||
else:
|
||||
yield from field_type.load(target, source)
|
||||
await field_type.load(target, source)
|
||||
|
||||
except EOFError:
|
||||
for tag, field in self.__fields.items():
|
||||
@ -292,13 +316,11 @@ class Message:
|
||||
for key in fields:
|
||||
setattr(self, key, fields[key])
|
||||
|
||||
def dump(self, target):
|
||||
result = yield from self.message_type.dump(target, self)
|
||||
return result
|
||||
async def dump(self, target):
|
||||
return await self.message_type.dump(target, self)
|
||||
|
||||
def dumps(self):
|
||||
result = yield from self.message_type.dumps(self)
|
||||
return result
|
||||
return self.message_type.dumps(self)
|
||||
|
||||
def __repr__(self):
|
||||
values = self.__dict__
|
||||
|
||||
Loading…
Reference in New Issue
Block a user