Files
flatbuffers/tests/MyGame/Example/Test.py
lu-wang-g 65f8703572 Flatbuffers Python Object API (#5616)
* Flatbuffers Python Object API

Implement the logic to generate the Python object API that can
unpack the data from a buf class into an object class, and pack
the data of an object class to a buf class.

* Fix the build issues

Remove unused parameters and replace auto in the for-loop statement
with std::string to make it compatible with VS2010.

* Fix the build issues.

* Add support for Array type

Added logic to handle Array type in Python Object API. Updated the
generated code accordingly.

* Fix the old style casting from int to char

* Fixed another conversion from int to char

* Fixed the import for typing

Importing typing may cause errors when a machine do not have the
moduel typing installed. This PR fixes the issue by guarding
"import typing" with the "try/except" statement.

* Fix issue of iterating the vector of import list

* Update the generated examples using generate_code.sh

* Fix the import order for typing

The import list was stored in unordered_set, so that each generated
codes may have different import order. Therefore, it failed in the
consistency test where two generated copies need to have exactly the
same apperance.

* Optimize unpack using numpy

Use numpy to unpack vector whenever it is possible to improve unpack
performance.

Also, added codegen command for Python specificly in generate_code.sh,
because --no-includes cannot be turn on for Python.

* Fix the import order

* Update generate_code.bat for windows accordingly

* Replace error message with pass

Avoid printing error message for every Python2 users about typing.
Replace it with pass.
2019-12-02 14:11:28 -08:00

58 lines
1.4 KiB
Python

# automatically generated by the FlatBuffers compiler, do not modify
# namespace: Example
import flatbuffers
from flatbuffers.compat import import_numpy
np = import_numpy()
class Test(object):
__slots__ = ['_tab']
# Test
def Init(self, buf, pos):
self._tab = flatbuffers.table.Table(buf, pos)
# Test
def A(self): return self._tab.Get(flatbuffers.number_types.Int16Flags, self._tab.Pos + flatbuffers.number_types.UOffsetTFlags.py_type(0))
# Test
def B(self): return self._tab.Get(flatbuffers.number_types.Int8Flags, self._tab.Pos + flatbuffers.number_types.UOffsetTFlags.py_type(2))
def CreateTest(builder, a, b):
builder.Prep(2, 4)
builder.Pad(1)
builder.PrependInt8(b)
builder.PrependInt16(a)
return builder.Offset()
class TestT(object):
# TestT
def __init__(self):
self.a = 0 # type: int
self.b = 0 # type: int
@classmethod
def InitFromBuf(cls, buf, pos):
test = Test()
test.Init(buf, pos)
return cls.InitFromObj(test)
@classmethod
def InitFromObj(cls, test):
x = TestT()
x._UnPack(test)
return x
# TestT
def _UnPack(self, test):
if test is None:
return
self.a = test.A()
self.b = test.B()
# TestT
def Pack(self, builder):
return CreateTest(builder, self.a, self.b)