Files
flatbuffers/tests/namespace_test/NamespaceA/TableInFirstNS.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

57 lines
2.0 KiB
Python

# automatically generated by the FlatBuffers compiler, do not modify
# namespace: NamespaceA
import flatbuffers
from flatbuffers.compat import import_numpy
np = import_numpy()
class TableInFirstNS(object):
__slots__ = ['_tab']
@classmethod
def GetRootAsTableInFirstNS(cls, buf, offset):
n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
x = TableInFirstNS()
x.Init(buf, n + offset)
return x
# TableInFirstNS
def Init(self, buf, pos):
self._tab = flatbuffers.table.Table(buf, pos)
# TableInFirstNS
def FooTable(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
if o != 0:
x = self._tab.Indirect(o + self._tab.Pos)
from NamespaceA.NamespaceB.TableInNestedNS import TableInNestedNS
obj = TableInNestedNS()
obj.Init(self._tab.Bytes, x)
return obj
return None
# TableInFirstNS
def FooEnum(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
if o != 0:
return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
return 0
# TableInFirstNS
def FooStruct(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
if o != 0:
x = o + self._tab.Pos
from NamespaceA.NamespaceB.StructInNestedNS import StructInNestedNS
obj = StructInNestedNS()
obj.Init(self._tab.Bytes, x)
return obj
return None
def TableInFirstNSStart(builder): builder.StartObject(3)
def TableInFirstNSAddFooTable(builder, fooTable): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(fooTable), 0)
def TableInFirstNSAddFooEnum(builder, fooEnum): builder.PrependInt8Slot(1, fooEnum, 0)
def TableInFirstNSAddFooStruct(builder, fooStruct): builder.PrependStructSlot(2, flatbuffers.number_types.UOffsetTFlags.py_type(fooStruct), 0)
def TableInFirstNSEnd(builder): return builder.EndObject()