Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/flatbuffers/encode.py: 64%

1# Copyright 2014 Google Inc. All rights reserved. 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# http://www.apache.org/licenses/LICENSE-2.0 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14 

15from . import number_types as N 

16from . import packer 

17from .compat import memoryview_type 

18from .compat import import_numpy, NumpyRequiredForThisFeature 

19 

20np = import_numpy() 

21 

22FILE_IDENTIFIER_LENGTH=4 

23 

24def Get(packer_type, buf, head): 

25 """ Get decodes a value at buf[head] using `packer_type`. """ 

26 return packer_type.unpack_from(memoryview_type(buf), head)[0] 

27 

28 

29def GetVectorAsNumpy(numpy_type, buf, count, offset): 

30 """ GetVecAsNumpy decodes values starting at buf[head] as 

31 `numpy_type`, where `numpy_type` is a numpy dtype. """ 

32 if np is not None: 

33 # TODO: could set .flags.writeable = False to make users jump through 

34 # hoops before modifying... 

35 return np.frombuffer(buf, dtype=numpy_type, count=count, offset=offset) 

36 else: 

37 raise NumpyRequiredForThisFeature('Numpy was not found.') 

38 

39 

40def Write(packer_type, buf, head, n): 

41 """ Write encodes `n` at buf[head] using `packer_type`. """ 

42 packer_type.pack_into(buf, head, n)