BigfootDev/flatbuffers
1
0
Fork 1
mirror of https://github.com/google/flatbuffers.git synced 2026-06-02 04:04:19 +00:00
Code Issues Packages Projects Releases Wiki Activity

Generate code to encode and decode nested flatbuffers in Python. (#6354)

Browse Source 
* Generate code to encode and decode nested flatbuffers in Python.

* Delete accidental trailing whitespace.

* Fully delete trailing whitespace.
This commit is contained in:
Richard A Hofer
2021-01-04 15:18:19 -05:00
committed by GitHub
parent 57f68e2896
commit 24dd85fd28
3 changed files with 127 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
tests/MyGame/Example/Monster.py
View File

@@ -205,6 +205,14 @@ class Monster(object):
return self._tab.GetVectorAsNumpy(flatbuffers.number_types.Uint8Flags, o)
return 0
# Monster
def TestnestedflatbufferNestedRoot(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(30))
if o != 0:
from MyGame.Example.Monster import Monster
return Monster.GetRootAsMonster(self._tab.Bytes, self._tab.Vector(o))
return 0
# Monster
def TestnestedflatbufferLength(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(30))
@@ -734,6 +742,14 @@ class Monster(object):
return self._tab.GetVectorAsNumpy(flatbuffers.number_types.Uint8Flags, o)
return 0
# Monster
def TestrequirednestedflatbufferNestedRoot(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(102))
if o != 0:
from MyGame.Example.Monster import Monster
return Monster.GetRootAsMonster(self._tab.Bytes, self._tab.Vector(o))
return 0
# Monster
def TestrequirednestedflatbufferLength(self):
o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(102))
@@ -765,6 +781,11 @@ def MonsterStartTestarrayoftablesVector(builder, numElems): return builder.Start
def MonsterAddEnemy(builder, enemy): builder.PrependUOffsetTRelativeSlot(12, flatbuffers.number_types.UOffsetTFlags.py_type(enemy), 0)
def MonsterAddTestnestedflatbuffer(builder, testnestedflatbuffer): builder.PrependUOffsetTRelativeSlot(13, flatbuffers.number_types.UOffsetTFlags.py_type(testnestedflatbuffer), 0)
def MonsterStartTestnestedflatbufferVector(builder, numElems): return builder.StartVector(1, numElems, 1)
def MonsterMakeTestnestedflatbufferVectorFromBytes(builder, bytes):
builder.StartVector(1, len(bytes), 1)
builder.head = builder.head - len(bytes)
builder.Bytes[builder.head : builder.head + len(bytes)] = bytes
return builder.EndVector(len(bytes))
def MonsterAddTestempty(builder, testempty): builder.PrependUOffsetTRelativeSlot(14, flatbuffers.number_types.UOffsetTFlags.py_type(testempty), 0)
def MonsterAddTestbool(builder, testbool): builder.PrependBoolSlot(15, testbool, 0)
def MonsterAddTesthashs32Fnv1(builder, testhashs32Fnv1): builder.PrependInt32Slot(16, testhashs32Fnv1, 0)
@@ -815,6 +836,11 @@ def MonsterStartVectorOfEnumsVector(builder, numElems): return builder.StartVect
def MonsterAddSignedEnum(builder, signedEnum): builder.PrependInt8Slot(48, signedEnum, -1)
def MonsterAddTestrequirednestedflatbuffer(builder, testrequirednestedflatbuffer): builder.PrependUOffsetTRelativeSlot(49, flatbuffers.number_types.UOffsetTFlags.py_type(testrequirednestedflatbuffer), 0)
def MonsterStartTestrequirednestedflatbufferVector(builder, numElems): return builder.StartVector(1, numElems, 1)
def MonsterMakeTestrequirednestedflatbufferVectorFromBytes(builder, bytes):
builder.StartVector(1, len(bytes), 1)
builder.head = builder.head - len(bytes)
builder.Bytes[builder.head : builder.head + len(bytes)] = bytes
return builder.EndVector(len(bytes))
def MonsterEnd(builder): return builder.EndObject()
import MyGame.Example.Ability

29
tests/py_test.py
View File

@@ -1874,6 +1874,35 @@ class TestAllCodePathsOfExampleSchema(unittest.TestCase):
lambda: mon2.TestnestedflatbufferAsNumpy(),
NumpyRequiredForThisFeature)
def test_nested_monster_testnestedflatbuffer(self):
b = flatbuffers.Builder(0)
# build another monster to nest inside testnestedflatbuffer
nestedB = flatbuffers.Builder(0)
nameStr = nestedB.CreateString("Nested Monster")
MyGame.Example.Monster.MonsterStart(nestedB)
MyGame.Example.Monster.MonsterAddHp(nestedB, 30)
MyGame.Example.Monster.MonsterAddName(nestedB, nameStr)
nestedMon = MyGame.Example.Monster.MonsterEnd(nestedB)
nestedB.Finish(nestedMon)
# write the nested FB bytes
sub_buf = MyGame.Example.Monster.MonsterMakeTestnestedflatbufferVectorFromBytes(
b, nestedB.Output())
# make the parent monster and include the bytes of the nested monster
MyGame.Example.Monster.MonsterStart(b)
MyGame.Example.Monster.MonsterAddTestnestedflatbuffer(b, sub_buf)
mon = MyGame.Example.Monster.MonsterEnd(b)
b.Finish(mon)
# inspect the resulting data:
mon2 = MyGame.Example.Monster.Monster.GetRootAsMonster(b.Bytes,
b.Head())
nestedMon2 = mon2.TestnestedflatbufferNestedRoot()
self.assertEqual(b"Nested Monster", nestedMon2.Name())
self.assertEqual(30, nestedMon2.Hp())
def test_nondefault_monster_testempty(self):
b = flatbuffers.Builder(0)