| Austin Schuh | e89fa2d | 2019-08-14 20:24:23 -0700 | [diff] [blame^] | 1 | # Copyright 2016 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 | |
| 15 | """ |
| 16 | Provide pre-compiled struct packers for encoding and decoding. |
| 17 | |
| 18 | See: https://docs.python.org/2/library/struct.html#format-characters |
| 19 | """ |
| 20 | |
| 21 | import struct |
| 22 | from . import compat |
| 23 | |
| 24 | |
| 25 | boolean = struct.Struct(compat.struct_bool_decl) |
| 26 | |
| 27 | uint8 = struct.Struct("<B") |
| 28 | uint16 = struct.Struct("<H") |
| 29 | uint32 = struct.Struct("<I") |
| 30 | uint64 = struct.Struct("<Q") |
| 31 | |
| 32 | int8 = struct.Struct("<b") |
| 33 | int16 = struct.Struct("<h") |
| 34 | int32 = struct.Struct("<i") |
| 35 | int64 = struct.Struct("<q") |
| 36 | |
| 37 | float32 = struct.Struct("<f") |
| 38 | float64 = struct.Struct("<d") |
| 39 | |
| 40 | uoffset = uint32 |
| 41 | soffset = int32 |
| 42 | voffset = uint16 |