mirror of
https://github.com/google/pebble.git
synced 2025-03-15 08:41:21 +00:00
2384 lines
96 KiB
Python
Executable file
2384 lines
96 KiB
Python
Executable file
#!/usr/bin/env python3
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# kate: replace-tabs on; indent-width 4;
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from __future__ import unicode_literals
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'''Generate header file for nanopb from a ProtoBuf FileDescriptorSet.'''
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nanopb_version = "nanopb-0.4.6"
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import sys
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import re
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import codecs
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import copy
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import itertools
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import tempfile
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import shutil
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import os
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from functools import reduce
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try:
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# Add some dummy imports to keep packaging tools happy.
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import google # bbfreeze seems to need these
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import pkg_resources # pyinstaller / protobuf 2.5 seem to need these
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import proto.nanopb_pb2 as nanopb_pb2 # pyinstaller seems to need this
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import pkg_resources.py2_warn
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except:
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# Don't care, we will error out later if it is actually important.
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pass
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try:
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# Make sure grpc_tools gets included in binary package if it is available
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import grpc_tools.protoc
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except:
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pass
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try:
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import google.protobuf.text_format as text_format
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import google.protobuf.descriptor_pb2 as descriptor
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import google.protobuf.compiler.plugin_pb2 as plugin_pb2
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import google.protobuf.reflection as reflection
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import google.protobuf.descriptor
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except:
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sys.stderr.write('''
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*************************************************************
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*** Could not import the Google protobuf Python libraries ***
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*** Try installing package 'python3-protobuf' or similar. ***
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*************************************************************
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''' + '\n')
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raise
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try:
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from .proto import nanopb_pb2
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from .proto._utils import invoke_protoc
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except TypeError:
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sys.stderr.write('''
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****************************************************************************
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*** Got TypeError when importing the protocol definitions for generator. ***
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*** This usually means that the protoc in your path doesn't match the ***
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*** Python protobuf library version. ***
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*** ***
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*** Please check the output of the following commands: ***
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*** which protoc ***
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*** protoc --version ***
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*** python3 -c 'import google.protobuf; print(google.protobuf.__file__)' ***
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*** If you are not able to find the python protobuf version using the ***
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*** above command, use this command. ***
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*** pip freeze | grep -i protobuf ***
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****************************************************************************
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''' + '\n')
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raise
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except (ValueError, SystemError, ImportError):
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# Probably invoked directly instead of via installed scripts.
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import proto.nanopb_pb2 as nanopb_pb2
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from proto._utils import invoke_protoc
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except:
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sys.stderr.write('''
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********************************************************************
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*** Failed to import the protocol definitions for generator. ***
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*** You have to run 'make' in the nanopb/generator/proto folder. ***
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********************************************************************
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''' + '\n')
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raise
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try:
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from tempfile import TemporaryDirectory
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except ImportError:
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class TemporaryDirectory:
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'''TemporaryDirectory fallback for Python 2'''
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def __enter__(self):
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self.dir = tempfile.mkdtemp()
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return self.dir
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def __exit__(self, *args):
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shutil.rmtree(self.dir)
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# ---------------------------------------------------------------------------
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# Generation of single fields
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# ---------------------------------------------------------------------------
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import time
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import os.path
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# Values are tuple (c type, pb type, encoded size, data_size)
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FieldD = descriptor.FieldDescriptorProto
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datatypes = {
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FieldD.TYPE_BOOL: ('bool', 'BOOL', 1, 4),
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FieldD.TYPE_DOUBLE: ('double', 'DOUBLE', 8, 8),
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FieldD.TYPE_FIXED32: ('uint32_t', 'FIXED32', 4, 4),
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FieldD.TYPE_FIXED64: ('uint64_t', 'FIXED64', 8, 8),
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FieldD.TYPE_FLOAT: ('float', 'FLOAT', 4, 4),
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FieldD.TYPE_INT32: ('int32_t', 'INT32', 10, 4),
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FieldD.TYPE_INT64: ('int64_t', 'INT64', 10, 8),
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FieldD.TYPE_SFIXED32: ('int32_t', 'SFIXED32', 4, 4),
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FieldD.TYPE_SFIXED64: ('int64_t', 'SFIXED64', 8, 8),
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FieldD.TYPE_SINT32: ('int32_t', 'SINT32', 5, 4),
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FieldD.TYPE_SINT64: ('int64_t', 'SINT64', 10, 8),
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FieldD.TYPE_UINT32: ('uint32_t', 'UINT32', 5, 4),
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FieldD.TYPE_UINT64: ('uint64_t', 'UINT64', 10, 8),
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# Integer size override options
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(FieldD.TYPE_INT32, nanopb_pb2.IS_8): ('int8_t', 'INT32', 10, 1),
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(FieldD.TYPE_INT32, nanopb_pb2.IS_16): ('int16_t', 'INT32', 10, 2),
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(FieldD.TYPE_INT32, nanopb_pb2.IS_32): ('int32_t', 'INT32', 10, 4),
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(FieldD.TYPE_INT32, nanopb_pb2.IS_64): ('int64_t', 'INT32', 10, 8),
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(FieldD.TYPE_SINT32, nanopb_pb2.IS_8): ('int8_t', 'SINT32', 2, 1),
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(FieldD.TYPE_SINT32, nanopb_pb2.IS_16): ('int16_t', 'SINT32', 3, 2),
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(FieldD.TYPE_SINT32, nanopb_pb2.IS_32): ('int32_t', 'SINT32', 5, 4),
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(FieldD.TYPE_SINT32, nanopb_pb2.IS_64): ('int64_t', 'SINT32', 10, 8),
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(FieldD.TYPE_UINT32, nanopb_pb2.IS_8): ('uint8_t', 'UINT32', 2, 1),
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(FieldD.TYPE_UINT32, nanopb_pb2.IS_16): ('uint16_t','UINT32', 3, 2),
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(FieldD.TYPE_UINT32, nanopb_pb2.IS_32): ('uint32_t','UINT32', 5, 4),
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(FieldD.TYPE_UINT32, nanopb_pb2.IS_64): ('uint64_t','UINT32', 10, 8),
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(FieldD.TYPE_INT64, nanopb_pb2.IS_8): ('int8_t', 'INT64', 10, 1),
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(FieldD.TYPE_INT64, nanopb_pb2.IS_16): ('int16_t', 'INT64', 10, 2),
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(FieldD.TYPE_INT64, nanopb_pb2.IS_32): ('int32_t', 'INT64', 10, 4),
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(FieldD.TYPE_INT64, nanopb_pb2.IS_64): ('int64_t', 'INT64', 10, 8),
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(FieldD.TYPE_SINT64, nanopb_pb2.IS_8): ('int8_t', 'SINT64', 2, 1),
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(FieldD.TYPE_SINT64, nanopb_pb2.IS_16): ('int16_t', 'SINT64', 3, 2),
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(FieldD.TYPE_SINT64, nanopb_pb2.IS_32): ('int32_t', 'SINT64', 5, 4),
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(FieldD.TYPE_SINT64, nanopb_pb2.IS_64): ('int64_t', 'SINT64', 10, 8),
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(FieldD.TYPE_UINT64, nanopb_pb2.IS_8): ('uint8_t', 'UINT64', 2, 1),
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(FieldD.TYPE_UINT64, nanopb_pb2.IS_16): ('uint16_t','UINT64', 3, 2),
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(FieldD.TYPE_UINT64, nanopb_pb2.IS_32): ('uint32_t','UINT64', 5, 4),
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(FieldD.TYPE_UINT64, nanopb_pb2.IS_64): ('uint64_t','UINT64', 10, 8),
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}
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class Globals:
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'''Ugly global variables, should find a good way to pass these.'''
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verbose_options = False
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separate_options = []
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matched_namemasks = set()
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protoc_insertion_points = False
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# String types and file encoding for Python2 UTF-8 support
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if sys.version_info.major == 2:
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import codecs
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open = codecs.open
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strtypes = (unicode, str)
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def str(x):
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try:
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return strtypes[1](x)
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except UnicodeEncodeError:
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return strtypes[0](x)
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else:
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strtypes = (str, )
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class Names:
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'''Keeps a set of nested names and formats them to C identifier.'''
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def __init__(self, parts = ()):
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if isinstance(parts, Names):
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parts = parts.parts
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elif isinstance(parts, strtypes):
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parts = (parts,)
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self.parts = tuple(parts)
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def __str__(self):
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return '_'.join(self.parts)
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def __add__(self, other):
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if isinstance(other, strtypes):
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return Names(self.parts + (other,))
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elif isinstance(other, Names):
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return Names(self.parts + other.parts)
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elif isinstance(other, tuple):
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return Names(self.parts + other)
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else:
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raise ValueError("Name parts should be of type str")
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def __eq__(self, other):
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return isinstance(other, Names) and self.parts == other.parts
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def __lt__(self, other):
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if not isinstance(other, Names):
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return NotImplemented
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return str(self) < str(other)
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def names_from_type_name(type_name):
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'''Parse Names() from FieldDescriptorProto type_name'''
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if type_name[0] != '.':
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raise NotImplementedError("Lookup of non-absolute type names is not supported")
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return Names(type_name[1:].split('.'))
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def varint_max_size(max_value):
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'''Returns the maximum number of bytes a varint can take when encoded.'''
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if max_value < 0:
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max_value = 2**64 - max_value
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for i in range(1, 11):
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if (max_value >> (i * 7)) == 0:
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return i
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raise ValueError("Value too large for varint: " + str(max_value))
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assert varint_max_size(-1) == 10
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assert varint_max_size(0) == 1
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assert varint_max_size(127) == 1
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assert varint_max_size(128) == 2
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class EncodedSize:
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'''Class used to represent the encoded size of a field or a message.
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Consists of a combination of symbolic sizes and integer sizes.'''
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def __init__(self, value = 0, symbols = [], declarations = [], required_defines = []):
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if isinstance(value, EncodedSize):
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self.value = value.value
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self.symbols = value.symbols
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self.declarations = value.declarations
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self.required_defines = value.required_defines
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elif isinstance(value, strtypes + (Names,)):
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self.symbols = [str(value)]
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self.value = 0
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self.declarations = []
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self.required_defines = [str(value)]
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else:
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self.value = value
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self.symbols = symbols
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self.declarations = declarations
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self.required_defines = required_defines
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def __add__(self, other):
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if isinstance(other, int):
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return EncodedSize(self.value + other, self.symbols, self.declarations, self.required_defines)
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elif isinstance(other, strtypes + (Names,)):
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return EncodedSize(self.value, self.symbols + [str(other)], self.declarations, self.required_defines + [str(other)])
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elif isinstance(other, EncodedSize):
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return EncodedSize(self.value + other.value, self.symbols + other.symbols,
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self.declarations + other.declarations, self.required_defines + other.required_defines)
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else:
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raise ValueError("Cannot add size: " + repr(other))
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def __mul__(self, other):
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if isinstance(other, int):
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return EncodedSize(self.value * other, [str(other) + '*' + s for s in self.symbols],
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self.declarations, self.required_defines)
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else:
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raise ValueError("Cannot multiply size: " + repr(other))
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def __str__(self):
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if not self.symbols:
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return str(self.value)
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else:
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return '(' + str(self.value) + ' + ' + ' + '.join(self.symbols) + ')'
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def get_declarations(self):
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'''Get any declarations that must appear alongside this encoded size definition,
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such as helper union {} types.'''
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return '\n'.join(self.declarations)
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def get_cpp_guard(self, local_defines):
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'''Get an #if preprocessor statement listing all defines that are required for this definition.'''
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needed = [x for x in self.required_defines if x not in local_defines]
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if needed:
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return '#if ' + ' && '.join(['defined(%s)' % x for x in needed]) + "\n"
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else:
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return ''
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def upperlimit(self):
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if not self.symbols:
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return self.value
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else:
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return 2**32 - 1
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class ProtoElement(object):
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# Constants regarding path of proto elements in file descriptor.
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# They are used to connect proto elements with source code information (comments)
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# These values come from:
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# https://github.com/google/protobuf/blob/master/src/google/protobuf/descriptor.proto
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FIELD = 2
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MESSAGE = 4
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ENUM = 5
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def __init__(self, element_type, index, comments = None, parent = ()):
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'''
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element_type is a predefined value for each element type in proto file.
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For example, message == 4, enum == 5, service == 6
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index is the N-th occurrence of the `path` in the proto file.
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For example, 4-th message in the proto file or 2-nd enum etc ...
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comments is a dictionary mapping between element path & SourceCodeInfo.Location
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(contains information about source comments).
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'''
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self.element_path = parent + (element_type, index)
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self.comments = comments or {}
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def get_member_comments(self, index):
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'''Get comments for a member of enum or message.'''
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return self.get_comments((ProtoElement.FIELD, index), leading_indent = True)
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def get_comments(self, member_path = (), leading_indent = False):
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'''Get leading & trailing comments for a protobuf element.
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member_path is the proto path of an element or member (ex. [5 0] or [4 1 2 0])
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leading_indent is a flag that indicates if leading comments should be indented
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'''
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# Obtain SourceCodeInfo.Location object containing comment
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# information (based on the member path)
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path = self.element_path + member_path
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comment = self.comments.get(path)
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leading_comment = ""
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trailing_comment = ""
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if not comment:
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return leading_comment, trailing_comment
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if comment.leading_comments:
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leading_comment = " " if leading_indent else ""
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leading_comment += "/* %s */" % comment.leading_comments.strip()
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if comment.trailing_comments:
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trailing_comment = "/* %s */" % comment.trailing_comments.strip()
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return leading_comment, trailing_comment
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class Enum(ProtoElement):
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def __init__(self, names, desc, enum_options, index, comments):
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'''
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desc is EnumDescriptorProto
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index is the index of this enum element inside the file
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comments is a dictionary mapping between element path & SourceCodeInfo.Location
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(contains information about source comments)
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'''
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super(Enum, self).__init__(ProtoElement.ENUM, index, comments)
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self.options = enum_options
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self.names = names
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# by definition, `names` include this enum's name
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base_name = Names(names.parts[:-1])
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if enum_options.long_names:
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self.values = [(names + x.name, x.number) for x in desc.value]
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else:
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self.values = [(base_name + x.name, x.number) for x in desc.value]
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self.value_longnames = [self.names + x.name for x in desc.value]
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self.packed = enum_options.packed_enum
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def has_negative(self):
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for n, v in self.values:
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if v < 0:
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return True
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return False
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def encoded_size(self):
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return max([varint_max_size(v) for n,v in self.values])
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def __str__(self):
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leading_comment, trailing_comment = self.get_comments()
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result = ''
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if leading_comment:
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result = '%s\n' % leading_comment
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result += 'typedef enum _%s { %s\n' % (self.names, trailing_comment)
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enum_length = len(self.values)
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enum_values = []
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for index, (name, value) in enumerate(self.values):
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leading_comment, trailing_comment = self.get_member_comments(index)
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if leading_comment:
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enum_values.append(leading_comment)
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comma = ","
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if index == enum_length - 1:
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# last enum member should not end with a comma
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comma = ""
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enum_values.append(" %s = %d%s %s" % (name, value, comma, trailing_comment))
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result += '\n'.join(enum_values)
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result += '\n}'
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if self.packed:
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result += ' pb_packed'
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result += ' %s;' % self.names
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return result
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|
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def auxiliary_defines(self):
|
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# sort the enum by value
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sorted_values = sorted(self.values, key = lambda x: (x[1], x[0]))
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result = '#define _%s_MIN %s\n' % (self.names, sorted_values[0][0])
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result += '#define _%s_MAX %s\n' % (self.names, sorted_values[-1][0])
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result += '#define _%s_ARRAYSIZE ((%s)(%s+1))\n' % (self.names, self.names, sorted_values[-1][0])
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|
|
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if not self.options.long_names:
|
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# Define the long names always so that enum value references
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# from other files work properly.
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for i, x in enumerate(self.values):
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result += '#define %s %s\n' % (self.value_longnames[i], x[0])
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|
|
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if self.options.enum_to_string:
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result += 'const char *%s_name(%s v);\n' % (self.names, self.names)
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|
|
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return result
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|
|
|
def enum_to_string_definition(self):
|
|
if not self.options.enum_to_string:
|
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return ""
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|
|
|
result = 'const char *%s_name(%s v) {\n' % (self.names, self.names)
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|
result += ' switch (v) {\n'
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|
|
|
for ((enumname, _), strname) in zip(self.values, self.value_longnames):
|
|
# Strip off the leading type name from the string value.
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|
strval = str(strname)[len(str(self.names)) + 1:]
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result += ' case %s: return "%s";\n' % (enumname, strval)
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|
|
result += ' }\n'
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|
result += ' return "unknown";\n'
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result += '}\n'
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return result
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|
|
|
class FieldMaxSize:
|
|
def __init__(self, worst = 0, checks = [], field_name = 'undefined'):
|
|
if isinstance(worst, list):
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|
self.worst = max(i for i in worst if i is not None)
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else:
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self.worst = worst
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self.worst_field = field_name
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|
self.checks = list(checks)
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def extend(self, extend, field_name = None):
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self.worst = max(self.worst, extend.worst)
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if self.worst == extend.worst:
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self.worst_field = extend.worst_field
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|
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self.checks.extend(extend.checks)
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|
|
|
class Field(ProtoElement):
|
|
macro_x_param = 'X'
|
|
macro_a_param = 'a'
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|
|
|
def __init__(self, struct_name, desc, field_options, parent_path = (), index = None, comments = None):
|
|
'''desc is FieldDescriptorProto'''
|
|
ProtoElement.__init__(self, ProtoElement.FIELD, index, comments, parent_path)
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|
self.tag = desc.number
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|
self.struct_name = struct_name
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|
self.union_name = None
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|
self.name = desc.name
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|
self.default = None
|
|
self.max_size = None
|
|
self.max_count = None
|
|
self.array_decl = ""
|
|
self.enc_size = None
|
|
self.data_item_size = None
|
|
self.ctype = None
|
|
self.fixed_count = False
|
|
self.index = index
|
|
self.callback_datatype = field_options.callback_datatype
|
|
self.math_include_required = False
|
|
self.sort_by_tag = field_options.sort_by_tag
|
|
|
|
if field_options.type == nanopb_pb2.FT_INLINE:
|
|
# Before nanopb-0.3.8, fixed length bytes arrays were specified
|
|
# by setting type to FT_INLINE. But to handle pointer typed fields,
|
|
# it makes sense to have it as a separate option.
|
|
field_options.type = nanopb_pb2.FT_STATIC
|
|
field_options.fixed_length = True
|
|
|
|
# Parse field options
|
|
if field_options.HasField("max_size"):
|
|
self.max_size = field_options.max_size
|
|
|
|
self.default_has = field_options.default_has
|
|
|
|
if desc.type == FieldD.TYPE_STRING and field_options.HasField("max_length"):
|
|
# max_length overrides max_size for strings
|
|
self.max_size = field_options.max_length + 1
|
|
|
|
if field_options.HasField("max_count"):
|
|
self.max_count = field_options.max_count
|
|
|
|
if desc.HasField('default_value'):
|
|
self.default = desc.default_value
|
|
|
|
# Check field rules, i.e. required/optional/repeated.
|
|
can_be_static = True
|
|
if desc.label == FieldD.LABEL_REPEATED:
|
|
self.rules = 'REPEATED'
|
|
if self.max_count is None:
|
|
can_be_static = False
|
|
else:
|
|
self.array_decl = '[%d]' % self.max_count
|
|
if field_options.fixed_count:
|
|
self.rules = 'FIXARRAY'
|
|
|
|
elif field_options.proto3:
|
|
if desc.type == FieldD.TYPE_MESSAGE and not field_options.proto3_singular_msgs:
|
|
# In most other protobuf libraries proto3 submessages have
|
|
# "null" status. For nanopb, that is implemented as has_ field.
|
|
self.rules = 'OPTIONAL'
|
|
elif hasattr(desc, "proto3_optional") and desc.proto3_optional:
|
|
# Protobuf 3.12 introduced optional fields for proto3 syntax
|
|
self.rules = 'OPTIONAL'
|
|
else:
|
|
# Proto3 singular fields (without has_field)
|
|
self.rules = 'SINGULAR'
|
|
elif desc.label == FieldD.LABEL_REQUIRED:
|
|
self.rules = 'REQUIRED'
|
|
elif desc.label == FieldD.LABEL_OPTIONAL:
|
|
self.rules = 'OPTIONAL'
|
|
else:
|
|
raise NotImplementedError(desc.label)
|
|
|
|
# Check if the field can be implemented with static allocation
|
|
# i.e. whether the data size is known.
|
|
if desc.type == FieldD.TYPE_STRING and self.max_size is None:
|
|
can_be_static = False
|
|
|
|
if desc.type == FieldD.TYPE_BYTES and self.max_size is None:
|
|
can_be_static = False
|
|
|
|
# Decide how the field data will be allocated
|
|
if field_options.type == nanopb_pb2.FT_DEFAULT:
|
|
if can_be_static:
|
|
field_options.type = nanopb_pb2.FT_STATIC
|
|
else:
|
|
field_options.type = field_options.fallback_type
|
|
|
|
if field_options.type == nanopb_pb2.FT_STATIC and not can_be_static:
|
|
raise Exception("Field '%s' is defined as static, but max_size or "
|
|
"max_count is not given." % self.name)
|
|
|
|
if field_options.fixed_count and self.max_count is None:
|
|
raise Exception("Field '%s' is defined as fixed count, "
|
|
"but max_count is not given." % self.name)
|
|
|
|
if field_options.type == nanopb_pb2.FT_STATIC:
|
|
self.allocation = 'STATIC'
|
|
elif field_options.type == nanopb_pb2.FT_POINTER:
|
|
self.allocation = 'POINTER'
|
|
elif field_options.type == nanopb_pb2.FT_CALLBACK:
|
|
self.allocation = 'CALLBACK'
|
|
else:
|
|
raise NotImplementedError(field_options.type)
|
|
|
|
if field_options.HasField("type_override"):
|
|
desc.type = field_options.type_override
|
|
|
|
# Decide the C data type to use in the struct.
|
|
if desc.type in datatypes:
|
|
self.ctype, self.pbtype, self.enc_size, self.data_item_size = datatypes[desc.type]
|
|
|
|
# Override the field size if user wants to use smaller integers
|
|
if (desc.type, field_options.int_size) in datatypes:
|
|
self.ctype, self.pbtype, self.enc_size, self.data_item_size = datatypes[(desc.type, field_options.int_size)]
|
|
elif desc.type == FieldD.TYPE_ENUM:
|
|
self.pbtype = 'ENUM'
|
|
self.data_item_size = 4
|
|
self.ctype = names_from_type_name(desc.type_name)
|
|
if self.default is not None:
|
|
self.default = self.ctype + self.default
|
|
self.enc_size = None # Needs to be filled in when enum values are known
|
|
elif desc.type == FieldD.TYPE_STRING:
|
|
self.pbtype = 'STRING'
|
|
self.ctype = 'char'
|
|
if self.allocation == 'STATIC':
|
|
self.ctype = 'char'
|
|
self.array_decl += '[%d]' % self.max_size
|
|
# -1 because of null terminator. Both pb_encode and pb_decode
|
|
# check the presence of it.
|
|
self.enc_size = varint_max_size(self.max_size) + self.max_size - 1
|
|
elif desc.type == FieldD.TYPE_BYTES:
|
|
if field_options.fixed_length:
|
|
self.pbtype = 'FIXED_LENGTH_BYTES'
|
|
|
|
if self.max_size is None:
|
|
raise Exception("Field '%s' is defined as fixed length, "
|
|
"but max_size is not given." % self.name)
|
|
|
|
self.enc_size = varint_max_size(self.max_size) + self.max_size
|
|
self.ctype = 'pb_byte_t'
|
|
self.array_decl += '[%d]' % self.max_size
|
|
else:
|
|
self.pbtype = 'BYTES'
|
|
self.ctype = 'pb_bytes_array_t'
|
|
if self.allocation == 'STATIC':
|
|
self.ctype = self.struct_name + self.name + 't'
|
|
self.enc_size = varint_max_size(self.max_size) + self.max_size
|
|
elif desc.type == FieldD.TYPE_MESSAGE:
|
|
self.pbtype = 'MESSAGE'
|
|
self.ctype = self.submsgname = names_from_type_name(desc.type_name)
|
|
self.enc_size = None # Needs to be filled in after the message type is available
|
|
if field_options.submsg_callback and self.allocation == 'STATIC':
|
|
self.pbtype = 'MSG_W_CB'
|
|
else:
|
|
raise NotImplementedError(desc.type)
|
|
|
|
if self.default and self.pbtype in ['FLOAT', 'DOUBLE']:
|
|
if 'inf' in self.default or 'nan' in self.default:
|
|
self.math_include_required = True
|
|
|
|
def __lt__(self, other):
|
|
return self.tag < other.tag
|
|
|
|
def __str__(self):
|
|
result = ''
|
|
if self.allocation == 'POINTER':
|
|
if self.rules == 'REPEATED':
|
|
if self.pbtype == 'MSG_W_CB':
|
|
result += ' pb_callback_t cb_' + self.name + ';\n'
|
|
result += ' pb_size_t ' + self.name + '_count;\n'
|
|
|
|
if self.pbtype in ['MESSAGE', 'MSG_W_CB']:
|
|
# Use struct definition, so recursive submessages are possible
|
|
result += ' struct _%s *%s;' % (self.ctype, self.name)
|
|
elif self.pbtype == 'FIXED_LENGTH_BYTES' or self.rules == 'FIXARRAY':
|
|
# Pointer to fixed size array
|
|
result += ' %s (*%s)%s;' % (self.ctype, self.name, self.array_decl)
|
|
elif self.rules in ['REPEATED', 'FIXARRAY'] and self.pbtype in ['STRING', 'BYTES']:
|
|
# String/bytes arrays need to be defined as pointers to pointers
|
|
result += ' %s **%s;' % (self.ctype, self.name)
|
|
else:
|
|
result += ' %s *%s;' % (self.ctype, self.name)
|
|
elif self.allocation == 'CALLBACK':
|
|
result += ' %s %s;' % (self.callback_datatype, self.name)
|
|
else:
|
|
if self.pbtype == 'MSG_W_CB' and self.rules in ['OPTIONAL', 'REPEATED']:
|
|
result += ' pb_callback_t cb_' + self.name + ';\n'
|
|
|
|
if self.rules == 'OPTIONAL':
|
|
result += ' bool has_' + self.name + ';\n'
|
|
elif self.rules == 'REPEATED':
|
|
result += ' pb_size_t ' + self.name + '_count;\n'
|
|
result += ' %s %s%s;' % (self.ctype, self.name, self.array_decl)
|
|
|
|
leading_comment, trailing_comment = self.get_comments(leading_indent = True)
|
|
if leading_comment: result = leading_comment + "\n" + result
|
|
if trailing_comment: result = result + " " + trailing_comment
|
|
|
|
return result
|
|
|
|
def types(self):
|
|
'''Return definitions for any special types this field might need.'''
|
|
if self.pbtype == 'BYTES' and self.allocation == 'STATIC':
|
|
result = 'typedef PB_BYTES_ARRAY_T(%d) %s;\n' % (self.max_size, self.ctype)
|
|
else:
|
|
result = ''
|
|
return result
|
|
|
|
def get_dependencies(self):
|
|
'''Get list of type names used by this field.'''
|
|
if self.allocation == 'STATIC':
|
|
return [str(self.ctype)]
|
|
else:
|
|
return []
|
|
|
|
def get_initializer(self, null_init, inner_init_only = False):
|
|
'''Return literal expression for this field's default value.
|
|
null_init: If True, initialize to a 0 value instead of default from .proto
|
|
inner_init_only: If True, exclude initialization for any count/has fields
|
|
'''
|
|
|
|
inner_init = None
|
|
if self.pbtype in ['MESSAGE', 'MSG_W_CB']:
|
|
if null_init:
|
|
inner_init = '%s_init_zero' % self.ctype
|
|
else:
|
|
inner_init = '%s_init_default' % self.ctype
|
|
elif self.default is None or null_init:
|
|
if self.pbtype == 'STRING':
|
|
inner_init = '""'
|
|
elif self.pbtype == 'BYTES':
|
|
inner_init = '{0, {0}}'
|
|
elif self.pbtype == 'FIXED_LENGTH_BYTES':
|
|
inner_init = '{0}'
|
|
elif self.pbtype in ('ENUM', 'UENUM'):
|
|
inner_init = '_%s_MIN' % self.ctype
|
|
else:
|
|
inner_init = '0'
|
|
else:
|
|
if self.pbtype == 'STRING':
|
|
data = codecs.escape_encode(self.default.encode('utf-8'))[0]
|
|
inner_init = '"' + data.decode('ascii') + '"'
|
|
elif self.pbtype == 'BYTES':
|
|
data = codecs.escape_decode(self.default)[0]
|
|
data = ["0x%02x" % c for c in bytearray(data)]
|
|
if len(data) == 0:
|
|
inner_init = '{0, {0}}'
|
|
else:
|
|
inner_init = '{%d, {%s}}' % (len(data), ','.join(data))
|
|
elif self.pbtype == 'FIXED_LENGTH_BYTES':
|
|
data = codecs.escape_decode(self.default)[0]
|
|
data = ["0x%02x" % c for c in bytearray(data)]
|
|
if len(data) == 0:
|
|
inner_init = '{0}'
|
|
else:
|
|
inner_init = '{%s}' % ','.join(data)
|
|
elif self.pbtype in ['FIXED32', 'UINT32']:
|
|
inner_init = str(self.default) + 'u'
|
|
elif self.pbtype in ['FIXED64', 'UINT64']:
|
|
inner_init = str(self.default) + 'ull'
|
|
elif self.pbtype in ['SFIXED64', 'INT64']:
|
|
inner_init = str(self.default) + 'll'
|
|
elif self.pbtype in ['FLOAT', 'DOUBLE']:
|
|
inner_init = str(self.default)
|
|
if 'inf' in inner_init:
|
|
inner_init = inner_init.replace('inf', 'INFINITY')
|
|
elif 'nan' in inner_init:
|
|
inner_init = inner_init.replace('nan', 'NAN')
|
|
elif (not '.' in inner_init) and self.pbtype == 'FLOAT':
|
|
inner_init += '.0f'
|
|
elif self.pbtype == 'FLOAT':
|
|
inner_init += 'f'
|
|
else:
|
|
inner_init = str(self.default)
|
|
|
|
if inner_init_only:
|
|
return inner_init
|
|
|
|
outer_init = None
|
|
if self.allocation == 'STATIC':
|
|
if self.rules == 'REPEATED':
|
|
outer_init = '0, {' + ', '.join([inner_init] * self.max_count) + '}'
|
|
elif self.rules == 'FIXARRAY':
|
|
outer_init = '{' + ', '.join([inner_init] * self.max_count) + '}'
|
|
elif self.rules == 'OPTIONAL':
|
|
if null_init or not self.default_has:
|
|
outer_init = 'false, ' + inner_init
|
|
else:
|
|
outer_init = 'true, ' + inner_init
|
|
else:
|
|
outer_init = inner_init
|
|
elif self.allocation == 'POINTER':
|
|
if self.rules == 'REPEATED':
|
|
outer_init = '0, NULL'
|
|
else:
|
|
outer_init = 'NULL'
|
|
elif self.allocation == 'CALLBACK':
|
|
if self.pbtype == 'EXTENSION':
|
|
outer_init = 'NULL'
|
|
else:
|
|
outer_init = '{{NULL}, NULL}'
|
|
|
|
if self.pbtype == 'MSG_W_CB' and self.rules in ['REPEATED', 'OPTIONAL']:
|
|
outer_init = '{{NULL}, NULL}, ' + outer_init
|
|
|
|
return outer_init
|
|
|
|
def tags(self):
|
|
'''Return the #define for the tag number of this field.'''
|
|
identifier = '%s_%s_tag' % (self.struct_name, self.name)
|
|
return '#define %-40s %d\n' % (identifier, self.tag)
|
|
|
|
def fieldlist(self):
|
|
'''Return the FIELDLIST macro entry for this field.
|
|
Format is: X(a, ATYPE, HTYPE, LTYPE, field_name, tag)
|
|
'''
|
|
name = self.name
|
|
|
|
if self.rules == "ONEOF":
|
|
# For oneofs, make a tuple of the union name, union member name,
|
|
# and the name inside the parent struct.
|
|
if not self.anonymous:
|
|
name = '(%s,%s,%s)' % (self.union_name, self.name, self.union_name + '.' + self.name)
|
|
else:
|
|
name = '(%s,%s,%s)' % (self.union_name, self.name, self.name)
|
|
|
|
return '%s(%s, %-9s %-9s %-9s %-16s %3d)' % (self.macro_x_param,
|
|
self.macro_a_param,
|
|
self.allocation + ',',
|
|
self.rules + ',',
|
|
self.pbtype + ',',
|
|
name + ',',
|
|
self.tag)
|
|
|
|
def data_size(self, dependencies):
|
|
'''Return estimated size of this field in the C struct.
|
|
This is used to try to automatically pick right descriptor size.
|
|
If the estimate is wrong, it will result in compile time error and
|
|
user having to specify descriptor_width option.
|
|
'''
|
|
if self.allocation == 'POINTER' or self.pbtype == 'EXTENSION':
|
|
size = 8
|
|
alignment = 8
|
|
elif self.allocation == 'CALLBACK':
|
|
size = 16
|
|
alignment = 8
|
|
elif self.pbtype in ['MESSAGE', 'MSG_W_CB']:
|
|
alignment = 8
|
|
if str(self.submsgname) in dependencies:
|
|
other_dependencies = dict(x for x in dependencies.items() if x[0] != str(self.struct_name))
|
|
size = dependencies[str(self.submsgname)].data_size(other_dependencies)
|
|
else:
|
|
size = 256 # Message is in other file, this is reasonable guess for most cases
|
|
|
|
if self.pbtype == 'MSG_W_CB':
|
|
size += 16
|
|
elif self.pbtype in ['STRING', 'FIXED_LENGTH_BYTES']:
|
|
size = self.max_size
|
|
alignment = 4
|
|
elif self.pbtype == 'BYTES':
|
|
size = self.max_size + 4
|
|
alignment = 4
|
|
elif self.data_item_size is not None:
|
|
size = self.data_item_size
|
|
alignment = 4
|
|
if self.data_item_size >= 8:
|
|
alignment = 8
|
|
else:
|
|
raise Exception("Unhandled field type: %s" % self.pbtype)
|
|
|
|
if self.rules in ['REPEATED', 'FIXARRAY'] and self.allocation == 'STATIC':
|
|
size *= self.max_count
|
|
|
|
if self.rules not in ('REQUIRED', 'SINGULAR'):
|
|
size += 4
|
|
|
|
if size % alignment != 0:
|
|
# Estimate how much alignment requirements will increase the size.
|
|
size += alignment - (size % alignment)
|
|
|
|
return size
|
|
|
|
def encoded_size(self, dependencies):
|
|
'''Return the maximum size that this field can take when encoded,
|
|
including the field tag. If the size cannot be determined, returns
|
|
None.'''
|
|
|
|
if self.allocation != 'STATIC':
|
|
return None
|
|
|
|
if self.pbtype in ['MESSAGE', 'MSG_W_CB']:
|
|
encsize = None
|
|
if str(self.submsgname) in dependencies:
|
|
submsg = dependencies[str(self.submsgname)]
|
|
other_dependencies = dict(x for x in dependencies.items() if x[0] != str(self.struct_name))
|
|
encsize = submsg.encoded_size(other_dependencies)
|
|
|
|
my_msg = dependencies.get(str(self.struct_name))
|
|
external = (not my_msg or submsg.protofile != my_msg.protofile)
|
|
|
|
if encsize and encsize.symbols and external:
|
|
# Couldn't fully resolve the size of a dependency from
|
|
# another file. Instead of including the symbols directly,
|
|
# just use the #define SubMessage_size from the header.
|
|
encsize = None
|
|
|
|
if encsize is not None:
|
|
# Include submessage length prefix
|
|
encsize += varint_max_size(encsize.upperlimit())
|
|
elif not external:
|
|
# The dependency is from the same file and size cannot be
|
|
# determined for it, thus we know it will not be possible
|
|
# in runtime either.
|
|
return None
|
|
|
|
if encsize is None:
|
|
# Submessage or its size cannot be found.
|
|
# This can occur if submessage is defined in different
|
|
# file, and it or its .options could not be found.
|
|
# Instead of direct numeric value, reference the size that
|
|
# has been #defined in the other file.
|
|
encsize = EncodedSize(self.submsgname + 'size')
|
|
|
|
# We will have to make a conservative assumption on the length
|
|
# prefix size, though.
|
|
encsize += 5
|
|
|
|
elif self.pbtype in ['ENUM', 'UENUM']:
|
|
if str(self.ctype) in dependencies:
|
|
enumtype = dependencies[str(self.ctype)]
|
|
encsize = enumtype.encoded_size()
|
|
else:
|
|
# Conservative assumption
|
|
encsize = 10
|
|
|
|
elif self.enc_size is None:
|
|
raise RuntimeError("Could not determine encoded size for %s.%s"
|
|
% (self.struct_name, self.name))
|
|
else:
|
|
encsize = EncodedSize(self.enc_size)
|
|
|
|
encsize += varint_max_size(self.tag << 3) # Tag + wire type
|
|
|
|
if self.rules in ['REPEATED', 'FIXARRAY']:
|
|
# Decoders must be always able to handle unpacked arrays.
|
|
# Therefore we have to reserve space for it, even though
|
|
# we emit packed arrays ourselves. For length of 1, packed
|
|
# arrays are larger however so we need to add allowance
|
|
# for the length byte.
|
|
encsize *= self.max_count
|
|
|
|
if self.max_count == 1:
|
|
encsize += 1
|
|
|
|
return encsize
|
|
|
|
def has_callbacks(self):
|
|
return self.allocation == 'CALLBACK'
|
|
|
|
def requires_custom_field_callback(self):
|
|
return self.allocation == 'CALLBACK' and self.callback_datatype != 'pb_callback_t'
|
|
|
|
class ExtensionRange(Field):
|
|
def __init__(self, struct_name, range_start, field_options):
|
|
'''Implements a special pb_extension_t* field in an extensible message
|
|
structure. The range_start signifies the index at which the extensions
|
|
start. Not necessarily all tags above this are extensions, it is merely
|
|
a speed optimization.
|
|
'''
|
|
self.tag = range_start
|
|
self.struct_name = struct_name
|
|
self.name = 'extensions'
|
|
self.pbtype = 'EXTENSION'
|
|
self.rules = 'OPTIONAL'
|
|
self.allocation = 'CALLBACK'
|
|
self.ctype = 'pb_extension_t'
|
|
self.array_decl = ''
|
|
self.default = None
|
|
self.max_size = 0
|
|
self.max_count = 0
|
|
self.data_item_size = 0
|
|
self.fixed_count = False
|
|
self.callback_datatype = 'pb_extension_t*'
|
|
|
|
def requires_custom_field_callback(self):
|
|
return False
|
|
|
|
def __str__(self):
|
|
return ' pb_extension_t *extensions;'
|
|
|
|
def types(self):
|
|
return ''
|
|
|
|
def tags(self):
|
|
return ''
|
|
|
|
def encoded_size(self, dependencies):
|
|
# We exclude extensions from the count, because they cannot be known
|
|
# until runtime. Other option would be to return None here, but this
|
|
# way the value remains useful if extensions are not used.
|
|
return EncodedSize(0)
|
|
|
|
class ExtensionField(Field):
|
|
def __init__(self, fullname, desc, field_options):
|
|
self.fullname = fullname
|
|
self.extendee_name = names_from_type_name(desc.extendee)
|
|
Field.__init__(self, self.fullname + "extmsg", desc, field_options)
|
|
|
|
if self.rules != 'OPTIONAL':
|
|
self.skip = True
|
|
else:
|
|
self.skip = False
|
|
self.rules = 'REQUIRED' # We don't really want the has_field for extensions
|
|
# currently no support for comments for extension fields => provide 0, {}
|
|
self.msg = Message(self.fullname + "extmsg", None, field_options, 0, {})
|
|
self.msg.fields.append(self)
|
|
|
|
def tags(self):
|
|
'''Return the #define for the tag number of this field.'''
|
|
identifier = '%s_tag' % self.fullname
|
|
return '#define %-40s %d\n' % (identifier, self.tag)
|
|
|
|
def extension_decl(self):
|
|
'''Declaration of the extension type in the .pb.h file'''
|
|
if self.skip:
|
|
msg = '/* Extension field %s was skipped because only "optional"\n' % self.fullname
|
|
msg +=' type of extension fields is currently supported. */\n'
|
|
return msg
|
|
|
|
return ('extern const pb_extension_type_t %s; /* field type: %s */\n' %
|
|
(self.fullname, str(self).strip()))
|
|
|
|
def extension_def(self, dependencies):
|
|
'''Definition of the extension type in the .pb.c file'''
|
|
|
|
if self.skip:
|
|
return ''
|
|
|
|
result = "/* Definition for extension field %s */\n" % self.fullname
|
|
result += str(self.msg)
|
|
result += self.msg.fields_declaration(dependencies)
|
|
result += 'pb_byte_t %s_default[] = {0x00};\n' % self.msg.name
|
|
result += self.msg.fields_definition(dependencies)
|
|
result += 'const pb_extension_type_t %s = {\n' % self.fullname
|
|
result += ' NULL,\n'
|
|
result += ' NULL,\n'
|
|
result += ' &%s_msg\n' % self.msg.name
|
|
result += '};\n'
|
|
return result
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Generation of oneofs (unions)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
class OneOf(Field):
|
|
def __init__(self, struct_name, oneof_desc, oneof_options):
|
|
self.struct_name = struct_name
|
|
self.name = oneof_desc.name
|
|
self.ctype = 'union'
|
|
self.pbtype = 'oneof'
|
|
self.fields = []
|
|
self.allocation = 'ONEOF'
|
|
self.default = None
|
|
self.rules = 'ONEOF'
|
|
self.index = None
|
|
self.anonymous = oneof_options.anonymous_oneof
|
|
self.sort_by_tag = oneof_options.sort_by_tag
|
|
self.has_msg_cb = False
|
|
|
|
def add_field(self, field):
|
|
field.union_name = self.name
|
|
field.rules = 'ONEOF'
|
|
field.anonymous = self.anonymous
|
|
self.fields.append(field)
|
|
|
|
if self.sort_by_tag:
|
|
self.fields.sort()
|
|
|
|
if field.pbtype == 'MSG_W_CB':
|
|
self.has_msg_cb = True
|
|
|
|
# Sort by the lowest tag number inside union
|
|
self.tag = min([f.tag for f in self.fields])
|
|
|
|
def __str__(self):
|
|
result = ''
|
|
if self.fields:
|
|
if self.has_msg_cb:
|
|
result += ' pb_callback_t cb_' + self.name + ';\n'
|
|
|
|
result += ' pb_size_t which_' + self.name + ";\n"
|
|
result += ' union {\n'
|
|
for f in self.fields:
|
|
result += ' ' + str(f).replace('\n', '\n ') + '\n'
|
|
if self.anonymous:
|
|
result += ' };'
|
|
else:
|
|
result += ' } ' + self.name + ';'
|
|
return result
|
|
|
|
def types(self):
|
|
return ''.join([f.types() for f in self.fields])
|
|
|
|
def get_dependencies(self):
|
|
deps = []
|
|
for f in self.fields:
|
|
deps += f.get_dependencies()
|
|
return deps
|
|
|
|
def get_initializer(self, null_init):
|
|
if self.has_msg_cb:
|
|
return '{{NULL}, NULL}, 0, {' + self.fields[0].get_initializer(null_init) + '}'
|
|
else:
|
|
return '0, {' + self.fields[0].get_initializer(null_init) + '}'
|
|
|
|
def tags(self):
|
|
return ''.join([f.tags() for f in self.fields])
|
|
|
|
def data_size(self, dependencies):
|
|
return max(f.data_size(dependencies) for f in self.fields)
|
|
|
|
def encoded_size(self, dependencies):
|
|
'''Returns the size of the largest oneof field.'''
|
|
largest = 0
|
|
dynamic_sizes = {}
|
|
for f in self.fields:
|
|
size = EncodedSize(f.encoded_size(dependencies))
|
|
if size is None or size.value is None:
|
|
return None
|
|
elif size.symbols:
|
|
dynamic_sizes[f.tag] = size
|
|
elif size.value > largest:
|
|
largest = size.value
|
|
|
|
if not dynamic_sizes:
|
|
# Simple case, all sizes were known at generator time
|
|
return EncodedSize(largest)
|
|
|
|
if largest > 0:
|
|
# Some sizes were known, some were not
|
|
dynamic_sizes[0] = EncodedSize(largest)
|
|
|
|
# Couldn't find size for submessage at generation time,
|
|
# have to rely on macro resolution at compile time.
|
|
if len(dynamic_sizes) == 1:
|
|
# Only one symbol was needed
|
|
return list(dynamic_sizes.values())[0]
|
|
else:
|
|
# Use sizeof(union{}) construct to find the maximum size of
|
|
# submessages.
|
|
union_name = "%s_%s_size_union" % (self.struct_name, self.name)
|
|
union_def = 'union %s {%s};\n' % (union_name, ' '.join('char f%d[%s];' % (k, s) for k,s in dynamic_sizes.items()))
|
|
required_defs = list(itertools.chain.from_iterable(s.required_defines for k,s in dynamic_sizes.items()))
|
|
return EncodedSize(0, ['sizeof(union %s)' % union_name], [union_def], required_defs)
|
|
|
|
def has_callbacks(self):
|
|
return bool([f for f in self.fields if f.has_callbacks()])
|
|
|
|
def requires_custom_field_callback(self):
|
|
return bool([f for f in self.fields if f.requires_custom_field_callback()])
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Generation of messages (structures)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
class Message(ProtoElement):
|
|
def __init__(self, names, desc, message_options, index, comments):
|
|
super(Message, self).__init__(ProtoElement.MESSAGE, index, comments)
|
|
self.name = names
|
|
self.fields = []
|
|
self.oneofs = {}
|
|
self.desc = desc
|
|
self.math_include_required = False
|
|
self.packed = message_options.packed_struct
|
|
self.descriptorsize = message_options.descriptorsize
|
|
|
|
if message_options.msgid:
|
|
self.msgid = message_options.msgid
|
|
|
|
if desc is not None:
|
|
self.load_fields(desc, message_options)
|
|
|
|
self.callback_function = message_options.callback_function
|
|
if not message_options.HasField('callback_function'):
|
|
# Automatically assign a per-message callback if any field has
|
|
# a special callback_datatype.
|
|
for field in self.fields:
|
|
if field.requires_custom_field_callback():
|
|
self.callback_function = "%s_callback" % self.name
|
|
break
|
|
|
|
def load_fields(self, desc, message_options):
|
|
'''Load field list from DescriptorProto'''
|
|
|
|
no_unions = []
|
|
|
|
if hasattr(desc, 'oneof_decl'):
|
|
for i, f in enumerate(desc.oneof_decl):
|
|
oneof_options = get_nanopb_suboptions(desc, message_options, self.name + f.name)
|
|
if oneof_options.no_unions:
|
|
no_unions.append(i) # No union, but add fields normally
|
|
elif oneof_options.type == nanopb_pb2.FT_IGNORE:
|
|
pass # No union and skip fields also
|
|
else:
|
|
oneof = OneOf(self.name, f, oneof_options)
|
|
self.oneofs[i] = oneof
|
|
else:
|
|
sys.stderr.write('Note: This Python protobuf library has no OneOf support\n')
|
|
|
|
for index, f in enumerate(desc.field):
|
|
field_options = get_nanopb_suboptions(f, message_options, self.name + f.name)
|
|
if field_options.type == nanopb_pb2.FT_IGNORE:
|
|
continue
|
|
|
|
if field_options.descriptorsize > self.descriptorsize:
|
|
self.descriptorsize = field_options.descriptorsize
|
|
|
|
field = Field(self.name, f, field_options, self.element_path, index, self.comments)
|
|
if hasattr(f, 'oneof_index') and f.HasField('oneof_index'):
|
|
if hasattr(f, 'proto3_optional') and f.proto3_optional:
|
|
no_unions.append(f.oneof_index)
|
|
|
|
if f.oneof_index in no_unions:
|
|
self.fields.append(field)
|
|
elif f.oneof_index in self.oneofs:
|
|
self.oneofs[f.oneof_index].add_field(field)
|
|
|
|
if self.oneofs[f.oneof_index] not in self.fields:
|
|
self.fields.append(self.oneofs[f.oneof_index])
|
|
else:
|
|
self.fields.append(field)
|
|
|
|
if field.math_include_required:
|
|
self.math_include_required = True
|
|
|
|
if len(desc.extension_range) > 0:
|
|
field_options = get_nanopb_suboptions(desc, message_options, self.name + 'extensions')
|
|
range_start = min([r.start for r in desc.extension_range])
|
|
if field_options.type != nanopb_pb2.FT_IGNORE:
|
|
self.fields.append(ExtensionRange(self.name, range_start, field_options))
|
|
|
|
if message_options.sort_by_tag:
|
|
self.fields.sort()
|
|
|
|
def get_dependencies(self):
|
|
'''Get list of type names that this structure refers to.'''
|
|
deps = []
|
|
for f in self.fields:
|
|
deps += f.get_dependencies()
|
|
return deps
|
|
|
|
def __str__(self):
|
|
leading_comment, trailing_comment = self.get_comments()
|
|
|
|
result = ''
|
|
if leading_comment:
|
|
result = '%s\n' % leading_comment
|
|
|
|
result += 'typedef struct _%s { %s\n' % (self.name, trailing_comment)
|
|
|
|
if not self.fields:
|
|
# Empty structs are not allowed in C standard.
|
|
# Therefore add a dummy field if an empty message occurs.
|
|
result += ' char dummy_field;'
|
|
|
|
result += '\n'.join([str(f) for f in self.fields])
|
|
|
|
if Globals.protoc_insertion_points:
|
|
result += '\n/* @@protoc_insertion_point(struct:%s) */' % self.name
|
|
|
|
result += '\n}'
|
|
|
|
if self.packed:
|
|
result += ' pb_packed'
|
|
|
|
result += ' %s;' % self.name
|
|
|
|
if self.packed:
|
|
result = 'PB_PACKED_STRUCT_START\n' + result
|
|
result += '\nPB_PACKED_STRUCT_END'
|
|
|
|
return result + '\n'
|
|
|
|
def types(self):
|
|
return ''.join([f.types() for f in self.fields])
|
|
|
|
def get_initializer(self, null_init):
|
|
if not self.fields:
|
|
return '{0}'
|
|
|
|
parts = []
|
|
for field in self.fields:
|
|
parts.append(field.get_initializer(null_init))
|
|
return '{' + ', '.join(parts) + '}'
|
|
|
|
def count_required_fields(self):
|
|
'''Returns number of required fields inside this message'''
|
|
count = 0
|
|
for f in self.fields:
|
|
if not isinstance(f, OneOf):
|
|
if f.rules == 'REQUIRED':
|
|
count += 1
|
|
return count
|
|
|
|
def all_fields(self):
|
|
'''Iterate over all fields in this message, including nested OneOfs.'''
|
|
for f in self.fields:
|
|
if isinstance(f, OneOf):
|
|
for f2 in f.fields:
|
|
yield f2
|
|
else:
|
|
yield f
|
|
|
|
|
|
def field_for_tag(self, tag):
|
|
'''Given a tag number, return the Field instance.'''
|
|
for field in self.all_fields():
|
|
if field.tag == tag:
|
|
return field
|
|
return None
|
|
|
|
def count_all_fields(self):
|
|
'''Count the total number of fields in this message.'''
|
|
count = 0
|
|
for f in self.fields:
|
|
if isinstance(f, OneOf):
|
|
count += len(f.fields)
|
|
else:
|
|
count += 1
|
|
return count
|
|
|
|
def fields_declaration(self, dependencies):
|
|
'''Return X-macro declaration of all fields in this message.'''
|
|
Field.macro_x_param = 'X'
|
|
Field.macro_a_param = 'a'
|
|
while any(field.name == Field.macro_x_param for field in self.all_fields()):
|
|
Field.macro_x_param += '_'
|
|
while any(field.name == Field.macro_a_param for field in self.all_fields()):
|
|
Field.macro_a_param += '_'
|
|
|
|
# Field descriptor array must be sorted by tag number, pb_common.c relies on it.
|
|
sorted_fields = list(self.all_fields())
|
|
sorted_fields.sort(key = lambda x: x.tag)
|
|
|
|
result = '#define %s_FIELDLIST(%s, %s) \\\n' % (self.name,
|
|
Field.macro_x_param,
|
|
Field.macro_a_param)
|
|
result += ' \\\n'.join(x.fieldlist() for x in sorted_fields)
|
|
result += '\n'
|
|
|
|
has_callbacks = bool([f for f in self.fields if f.has_callbacks()])
|
|
if has_callbacks:
|
|
if self.callback_function != 'pb_default_field_callback':
|
|
result += "extern bool %s(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field);\n" % self.callback_function
|
|
result += "#define %s_CALLBACK %s\n" % (self.name, self.callback_function)
|
|
else:
|
|
result += "#define %s_CALLBACK NULL\n" % self.name
|
|
|
|
defval = self.default_value(dependencies)
|
|
if defval:
|
|
hexcoded = ''.join("\\x%02x" % ord(defval[i:i+1]) for i in range(len(defval)))
|
|
result += '#define %s_DEFAULT (const pb_byte_t*)"%s\\x00"\n' % (self.name, hexcoded)
|
|
else:
|
|
result += '#define %s_DEFAULT NULL\n' % self.name
|
|
|
|
for field in sorted_fields:
|
|
if field.pbtype in ['MESSAGE', 'MSG_W_CB']:
|
|
if field.rules == 'ONEOF':
|
|
result += "#define %s_%s_%s_MSGTYPE %s\n" % (self.name, field.union_name, field.name, field.ctype)
|
|
else:
|
|
result += "#define %s_%s_MSGTYPE %s\n" % (self.name, field.name, field.ctype)
|
|
|
|
return result
|
|
|
|
def fields_declaration_cpp_lookup(self):
|
|
result = 'template <>\n'
|
|
result += 'struct MessageDescriptor<%s> {\n' % (self.name)
|
|
result += ' static PB_INLINE_CONSTEXPR const pb_size_t fields_array_length = %d;\n' % (self.count_all_fields())
|
|
result += ' static inline const pb_msgdesc_t* fields() {\n'
|
|
result += ' return &%s_msg;\n' % (self.name)
|
|
result += ' }\n'
|
|
result += '};'
|
|
return result
|
|
|
|
def fields_definition(self, dependencies):
|
|
'''Return the field descriptor definition that goes in .pb.c file.'''
|
|
width = self.required_descriptor_width(dependencies)
|
|
if width == 1:
|
|
width = 'AUTO'
|
|
|
|
result = 'PB_BIND(%s, %s, %s)\n' % (self.name, self.name, width)
|
|
return result
|
|
|
|
def required_descriptor_width(self, dependencies):
|
|
'''Estimate how many words are necessary for each field descriptor.'''
|
|
if self.descriptorsize != nanopb_pb2.DS_AUTO:
|
|
return int(self.descriptorsize)
|
|
|
|
if not self.fields:
|
|
return 1
|
|
|
|
max_tag = max(field.tag for field in self.all_fields())
|
|
max_offset = self.data_size(dependencies)
|
|
max_arraysize = max((field.max_count or 0) for field in self.all_fields())
|
|
max_datasize = max(field.data_size(dependencies) for field in self.all_fields())
|
|
|
|
if max_arraysize > 0xFFFF:
|
|
return 8
|
|
elif (max_tag > 0x3FF or max_offset > 0xFFFF or
|
|
max_arraysize > 0x0FFF or max_datasize > 0x0FFF):
|
|
return 4
|
|
elif max_tag > 0x3F or max_offset > 0xFF:
|
|
return 2
|
|
else:
|
|
# NOTE: Macro logic in pb.h ensures that width 1 will
|
|
# be raised to 2 automatically for string/submsg fields
|
|
# and repeated fields. Thus only tag and offset need to
|
|
# be checked.
|
|
return 1
|
|
|
|
def data_size(self, dependencies):
|
|
'''Return approximate sizeof(struct) in the compiled code.'''
|
|
return sum(f.data_size(dependencies) for f in self.fields)
|
|
|
|
def encoded_size(self, dependencies):
|
|
'''Return the maximum size that this message can take when encoded.
|
|
If the size cannot be determined, returns None.
|
|
'''
|
|
size = EncodedSize(0)
|
|
for field in self.fields:
|
|
fsize = field.encoded_size(dependencies)
|
|
if fsize is None:
|
|
return None
|
|
size += fsize
|
|
|
|
return size
|
|
|
|
def default_value(self, dependencies):
|
|
'''Generate serialized protobuf message that contains the
|
|
default values for optional fields.'''
|
|
|
|
if not self.desc:
|
|
return b''
|
|
|
|
if self.desc.options.map_entry:
|
|
return b''
|
|
|
|
optional_only = copy.deepcopy(self.desc)
|
|
|
|
# Remove fields without default values
|
|
# The iteration is done in reverse order to avoid remove() messing up iteration.
|
|
for field in reversed(list(optional_only.field)):
|
|
field.ClearField(str('extendee'))
|
|
parsed_field = self.field_for_tag(field.number)
|
|
if parsed_field is None or parsed_field.allocation != 'STATIC':
|
|
optional_only.field.remove(field)
|
|
elif (field.label == FieldD.LABEL_REPEATED or
|
|
field.type == FieldD.TYPE_MESSAGE):
|
|
optional_only.field.remove(field)
|
|
elif hasattr(field, 'oneof_index') and field.HasField('oneof_index'):
|
|
optional_only.field.remove(field)
|
|
elif field.type == FieldD.TYPE_ENUM:
|
|
# The partial descriptor doesn't include the enum type
|
|
# so we fake it with int64.
|
|
enumname = names_from_type_name(field.type_name)
|
|
try:
|
|
enumtype = dependencies[str(enumname)]
|
|
except KeyError:
|
|
raise Exception("Could not find enum type %s while generating default values for %s.\n" % (enumname, self.name)
|
|
+ "Try passing all source files to generator at once, or use -I option.")
|
|
|
|
if not isinstance(enumtype, Enum):
|
|
raise Exception("Expected enum type as %s, got %s" % (enumname, repr(enumtype)))
|
|
|
|
if field.HasField('default_value'):
|
|
defvals = [v for n,v in enumtype.values if n.parts[-1] == field.default_value]
|
|
else:
|
|
# If no default is specified, the default is the first value.
|
|
defvals = [v for n,v in enumtype.values]
|
|
if defvals and defvals[0] != 0:
|
|
field.type = FieldD.TYPE_INT64
|
|
field.default_value = str(defvals[0])
|
|
field.ClearField(str('type_name'))
|
|
else:
|
|
optional_only.field.remove(field)
|
|
elif not field.HasField('default_value'):
|
|
optional_only.field.remove(field)
|
|
|
|
if len(optional_only.field) == 0:
|
|
return b''
|
|
|
|
optional_only.ClearField(str('oneof_decl'))
|
|
optional_only.ClearField(str('nested_type'))
|
|
optional_only.ClearField(str('extension'))
|
|
optional_only.ClearField(str('enum_type'))
|
|
optional_only.name += str(id(self))
|
|
|
|
desc = google.protobuf.descriptor.MakeDescriptor(optional_only)
|
|
msg = reflection.MakeClass(desc)()
|
|
|
|
for field in optional_only.field:
|
|
if field.type == FieldD.TYPE_STRING:
|
|
setattr(msg, field.name, field.default_value)
|
|
elif field.type == FieldD.TYPE_BYTES:
|
|
setattr(msg, field.name, codecs.escape_decode(field.default_value)[0])
|
|
elif field.type in [FieldD.TYPE_FLOAT, FieldD.TYPE_DOUBLE]:
|
|
setattr(msg, field.name, float(field.default_value))
|
|
elif field.type == FieldD.TYPE_BOOL:
|
|
setattr(msg, field.name, field.default_value == 'true')
|
|
else:
|
|
setattr(msg, field.name, int(field.default_value))
|
|
|
|
return msg.SerializeToString()
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Processing of entire .proto files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
def iterate_messages(desc, flatten = False, names = Names()):
|
|
'''Recursively find all messages. For each, yield name, DescriptorProto.'''
|
|
if hasattr(desc, 'message_type'):
|
|
submsgs = desc.message_type
|
|
else:
|
|
submsgs = desc.nested_type
|
|
|
|
for submsg in submsgs:
|
|
sub_names = names + submsg.name
|
|
if flatten:
|
|
yield Names(submsg.name), submsg
|
|
else:
|
|
yield sub_names, submsg
|
|
|
|
for x in iterate_messages(submsg, flatten, sub_names):
|
|
yield x
|
|
|
|
def iterate_extensions(desc, flatten = False, names = Names()):
|
|
'''Recursively find all extensions.
|
|
For each, yield name, FieldDescriptorProto.
|
|
'''
|
|
for extension in desc.extension:
|
|
yield names, extension
|
|
|
|
for subname, subdesc in iterate_messages(desc, flatten, names):
|
|
for extension in subdesc.extension:
|
|
yield subname, extension
|
|
|
|
def toposort2(data):
|
|
'''Topological sort.
|
|
From http://code.activestate.com/recipes/577413-topological-sort/
|
|
This function is under the MIT license.
|
|
'''
|
|
for k, v in list(data.items()):
|
|
v.discard(k) # Ignore self dependencies
|
|
extra_items_in_deps = reduce(set.union, list(data.values()), set()) - set(data.keys())
|
|
data.update(dict([(item, set()) for item in extra_items_in_deps]))
|
|
while True:
|
|
ordered = set(item for item,dep in list(data.items()) if not dep)
|
|
if not ordered:
|
|
break
|
|
for item in sorted(ordered):
|
|
yield item
|
|
data = dict([(item, (dep - ordered)) for item,dep in list(data.items())
|
|
if item not in ordered])
|
|
assert not data, "A cyclic dependency exists amongst %r" % data
|
|
|
|
def sort_dependencies(messages):
|
|
'''Sort a list of Messages based on dependencies.'''
|
|
dependencies = {}
|
|
message_by_name = {}
|
|
for message in messages:
|
|
dependencies[str(message.name)] = set(message.get_dependencies())
|
|
message_by_name[str(message.name)] = message
|
|
|
|
for msgname in toposort2(dependencies):
|
|
if msgname in message_by_name:
|
|
yield message_by_name[msgname]
|
|
|
|
def make_identifier(headername):
|
|
'''Make #ifndef identifier that contains uppercase A-Z and digits 0-9'''
|
|
result = ""
|
|
for c in headername.upper():
|
|
if c.isalnum():
|
|
result += c
|
|
else:
|
|
result += '_'
|
|
return result
|
|
|
|
class MangleNames:
|
|
'''Handles conversion of type names according to mangle_names option:
|
|
M_NONE = 0; // Default, no typename mangling
|
|
M_STRIP_PACKAGE = 1; // Strip current package name
|
|
M_FLATTEN = 2; // Only use last path component
|
|
M_PACKAGE_INITIALS = 3; // Replace the package name by the initials
|
|
'''
|
|
def __init__(self, fdesc, file_options):
|
|
self.file_options = file_options
|
|
self.mangle_names = file_options.mangle_names
|
|
self.flatten = (self.mangle_names == nanopb_pb2.M_FLATTEN)
|
|
self.strip_prefix = None
|
|
self.replacement_prefix = None
|
|
self.name_mapping = {}
|
|
self.reverse_name_mapping = {}
|
|
|
|
if self.mangle_names == nanopb_pb2.M_STRIP_PACKAGE:
|
|
self.strip_prefix = "." + fdesc.package
|
|
elif self.mangle_names == nanopb_pb2.M_PACKAGE_INITIALS:
|
|
self.strip_prefix = "." + fdesc.package
|
|
self.replacement_prefix = ""
|
|
for part in fdesc.package.split("."):
|
|
self.replacement_prefix += part[0]
|
|
elif file_options.package:
|
|
self.strip_prefix = "." + fdesc.package
|
|
self.replacement_prefix = file_options.package
|
|
|
|
if self.replacement_prefix is not None:
|
|
self.base_name = Names(self.replacement_prefix.split('.'))
|
|
elif fdesc.package:
|
|
self.base_name = Names(fdesc.package.split('.'))
|
|
else:
|
|
self.base_name = Names()
|
|
|
|
def create_name(self, names):
|
|
'''Create name for a new message / enum.
|
|
Argument can be either string or Names instance.
|
|
'''
|
|
if str(names) not in self.name_mapping:
|
|
if self.mangle_names in (nanopb_pb2.M_NONE, nanopb_pb2.M_PACKAGE_INITIALS):
|
|
new_name = self.base_name + names
|
|
elif self.mangle_names == nanopb_pb2.M_STRIP_PACKAGE:
|
|
new_name = Names(names)
|
|
elif isinstance(names, Names):
|
|
new_name = Names(names.parts[-1])
|
|
else:
|
|
new_name = Names(names)
|
|
|
|
if str(new_name) in self.reverse_name_mapping:
|
|
sys.stderr.write("Warning: Duplicate name with mangle_names=%s: %s and %s map to %s\n" %
|
|
(self.mangle_names, self.reverse_name_mapping[str(new_name)], names, new_name))
|
|
|
|
self.name_mapping[str(names)] = new_name
|
|
self.reverse_name_mapping[str(new_name)] = names
|
|
|
|
return self.name_mapping[str(names)]
|
|
|
|
def mangle_field_typename(self, typename):
|
|
'''Mangle type name for a submessage / enum crossreference.
|
|
Argument is a string.
|
|
'''
|
|
if self.mangle_names == nanopb_pb2.M_FLATTEN:
|
|
return "." + typename.split(".")[-1]
|
|
|
|
if self.strip_prefix is not None and typename.startswith(self.strip_prefix):
|
|
if self.replacement_prefix is not None:
|
|
return "." + self.replacement_prefix + typename[len(self.strip_prefix):]
|
|
else:
|
|
return typename[len(self.strip_prefix):]
|
|
|
|
if self.file_options.package:
|
|
return "." + self.replacement_prefix + typename
|
|
|
|
return typename
|
|
|
|
class ProtoFile:
|
|
def __init__(self, fdesc, file_options):
|
|
'''Takes a FileDescriptorProto and parses it.'''
|
|
self.fdesc = fdesc
|
|
self.file_options = file_options
|
|
self.dependencies = {}
|
|
self.math_include_required = False
|
|
self.parse()
|
|
for message in self.messages:
|
|
if message.math_include_required:
|
|
self.math_include_required = True
|
|
break
|
|
|
|
# Some of types used in this file probably come from the file itself.
|
|
# Thus it has implicit dependency on itself.
|
|
self.add_dependency(self)
|
|
|
|
def parse(self):
|
|
self.enums = []
|
|
self.messages = []
|
|
self.extensions = []
|
|
self.manglenames = MangleNames(self.fdesc, self.file_options)
|
|
|
|
# process source code comment locations
|
|
# ignores any locations that do not contain any comment information
|
|
self.comment_locations = {
|
|
tuple(location.path): location
|
|
for location in self.fdesc.source_code_info.location
|
|
if location.leading_comments or location.leading_detached_comments or location.trailing_comments
|
|
}
|
|
|
|
for index, enum in enumerate(self.fdesc.enum_type):
|
|
name = self.manglenames.create_name(enum.name)
|
|
enum_options = get_nanopb_suboptions(enum, self.file_options, name)
|
|
self.enums.append(Enum(name, enum, enum_options, index, self.comment_locations))
|
|
|
|
for index, (names, message) in enumerate(iterate_messages(self.fdesc, self.manglenames.flatten)):
|
|
name = self.manglenames.create_name(names)
|
|
message_options = get_nanopb_suboptions(message, self.file_options, name)
|
|
|
|
if message_options.skip_message:
|
|
continue
|
|
|
|
message = copy.deepcopy(message)
|
|
for field in message.field:
|
|
if field.type in (FieldD.TYPE_MESSAGE, FieldD.TYPE_ENUM):
|
|
field.type_name = self.manglenames.mangle_field_typename(field.type_name)
|
|
|
|
self.messages.append(Message(name, message, message_options, index, self.comment_locations))
|
|
for index, enum in enumerate(message.enum_type):
|
|
name = self.manglenames.create_name(names + enum.name)
|
|
enum_options = get_nanopb_suboptions(enum, message_options, name)
|
|
self.enums.append(Enum(name, enum, enum_options, index, self.comment_locations))
|
|
|
|
for names, extension in iterate_extensions(self.fdesc, self.manglenames.flatten):
|
|
name = self.manglenames.create_name(names + extension.name)
|
|
field_options = get_nanopb_suboptions(extension, self.file_options, name)
|
|
|
|
extension = copy.deepcopy(extension)
|
|
if extension.type in (FieldD.TYPE_MESSAGE, FieldD.TYPE_ENUM):
|
|
extension.type_name = self.manglenames.mangle_field_typename(extension.type_name)
|
|
|
|
if field_options.type != nanopb_pb2.FT_IGNORE:
|
|
self.extensions.append(ExtensionField(name, extension, field_options))
|
|
|
|
def add_dependency(self, other):
|
|
for enum in other.enums:
|
|
self.dependencies[str(enum.names)] = enum
|
|
enum.protofile = other
|
|
|
|
for msg in other.messages:
|
|
self.dependencies[str(msg.name)] = msg
|
|
msg.protofile = other
|
|
|
|
# Fix field default values where enum short names are used.
|
|
for enum in other.enums:
|
|
if not enum.options.long_names:
|
|
for message in self.messages:
|
|
for field in message.all_fields():
|
|
if field.default in enum.value_longnames:
|
|
idx = enum.value_longnames.index(field.default)
|
|
field.default = enum.values[idx][0]
|
|
|
|
# Fix field data types where enums have negative values.
|
|
for enum in other.enums:
|
|
if not enum.has_negative():
|
|
for message in self.messages:
|
|
for field in message.all_fields():
|
|
if field.pbtype == 'ENUM' and field.ctype == enum.names:
|
|
field.pbtype = 'UENUM'
|
|
|
|
def generate_header(self, includes, headername, options):
|
|
'''Generate content for a header file.
|
|
Generates strings, which should be concatenated and stored to file.
|
|
'''
|
|
|
|
yield '/* Automatically generated nanopb header */\n'
|
|
if options.notimestamp:
|
|
yield '/* Generated by %s */\n\n' % (nanopb_version)
|
|
else:
|
|
yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
|
|
|
|
if self.fdesc.package:
|
|
symbol = make_identifier(self.fdesc.package + '_' + headername)
|
|
else:
|
|
symbol = make_identifier(headername)
|
|
yield '#ifndef PB_%s_INCLUDED\n' % symbol
|
|
yield '#define PB_%s_INCLUDED\n' % symbol
|
|
if self.math_include_required:
|
|
yield '#include <math.h>\n'
|
|
try:
|
|
yield options.libformat % ('pb.h')
|
|
except TypeError:
|
|
# no %s specified - use whatever was passed in as options.libformat
|
|
yield options.libformat
|
|
yield '\n'
|
|
|
|
for incfile in self.file_options.include:
|
|
# allow including system headers
|
|
if (incfile.startswith('<')):
|
|
yield '#include %s\n' % incfile
|
|
else:
|
|
yield options.genformat % incfile
|
|
yield '\n'
|
|
|
|
for incfile in includes:
|
|
noext = os.path.splitext(incfile)[0]
|
|
yield options.genformat % (noext + options.extension + options.header_extension)
|
|
yield '\n'
|
|
|
|
if Globals.protoc_insertion_points:
|
|
yield '/* @@protoc_insertion_point(includes) */\n'
|
|
|
|
yield '\n'
|
|
|
|
yield '#if PB_PROTO_HEADER_VERSION != 40\n'
|
|
yield '#error Regenerate this file with the current version of nanopb generator.\n'
|
|
yield '#endif\n'
|
|
yield '\n'
|
|
|
|
if self.enums:
|
|
yield '/* Enum definitions */\n'
|
|
for enum in self.enums:
|
|
yield str(enum) + '\n\n'
|
|
|
|
if self.messages:
|
|
yield '/* Struct definitions */\n'
|
|
for msg in sort_dependencies(self.messages):
|
|
yield msg.types()
|
|
yield str(msg) + '\n'
|
|
yield '\n'
|
|
|
|
if self.extensions:
|
|
yield '/* Extensions */\n'
|
|
for extension in self.extensions:
|
|
yield extension.extension_decl()
|
|
yield '\n'
|
|
|
|
if self.enums:
|
|
yield '/* Helper constants for enums */\n'
|
|
for enum in self.enums:
|
|
yield enum.auxiliary_defines() + '\n'
|
|
yield '\n'
|
|
|
|
yield '#ifdef __cplusplus\n'
|
|
yield 'extern "C" {\n'
|
|
yield '#endif\n\n'
|
|
|
|
if self.messages:
|
|
yield '/* Initializer values for message structs */\n'
|
|
for msg in self.messages:
|
|
identifier = '%s_init_default' % msg.name
|
|
yield '#define %-40s %s\n' % (identifier, msg.get_initializer(False))
|
|
for msg in self.messages:
|
|
identifier = '%s_init_zero' % msg.name
|
|
yield '#define %-40s %s\n' % (identifier, msg.get_initializer(True))
|
|
yield '\n'
|
|
|
|
yield '/* Field tags (for use in manual encoding/decoding) */\n'
|
|
for msg in sort_dependencies(self.messages):
|
|
for field in msg.fields:
|
|
yield field.tags()
|
|
for extension in self.extensions:
|
|
yield extension.tags()
|
|
yield '\n'
|
|
|
|
yield '/* Struct field encoding specification for nanopb */\n'
|
|
for msg in self.messages:
|
|
yield msg.fields_declaration(self.dependencies) + '\n'
|
|
for msg in self.messages:
|
|
yield 'extern const pb_msgdesc_t %s_msg;\n' % msg.name
|
|
yield '\n'
|
|
|
|
yield '/* Defines for backwards compatibility with code written before nanopb-0.4.0 */\n'
|
|
for msg in self.messages:
|
|
yield '#define %s_fields &%s_msg\n' % (msg.name, msg.name)
|
|
yield '\n'
|
|
|
|
yield '/* Maximum encoded size of messages (where known) */\n'
|
|
messagesizes = []
|
|
for msg in self.messages:
|
|
identifier = '%s_size' % msg.name
|
|
messagesizes.append((identifier, msg.encoded_size(self.dependencies)))
|
|
|
|
# If we require a symbol from another file, put a preprocessor if statement
|
|
# around it to prevent compilation errors if the symbol is not actually available.
|
|
local_defines = [identifier for identifier, msize in messagesizes if msize is not None]
|
|
|
|
# emit size_unions, if any
|
|
oneof_sizes = []
|
|
for msg in self.messages:
|
|
for f in msg.fields:
|
|
if isinstance(f, OneOf):
|
|
msize = f.encoded_size(self.dependencies)
|
|
if msize is not None:
|
|
oneof_sizes.append(msize)
|
|
for msize in oneof_sizes:
|
|
guard = msize.get_cpp_guard(local_defines)
|
|
if guard:
|
|
yield guard
|
|
yield msize.get_declarations()
|
|
if guard:
|
|
yield '#endif\n'
|
|
|
|
guards = {}
|
|
for identifier, msize in messagesizes:
|
|
if msize is not None:
|
|
cpp_guard = msize.get_cpp_guard(local_defines)
|
|
if cpp_guard not in guards:
|
|
guards[cpp_guard] = set()
|
|
guards[cpp_guard].add('#define %-40s %s' % (identifier, msize))
|
|
else:
|
|
yield '/* %s depends on runtime parameters */\n' % identifier
|
|
for guard, values in guards.items():
|
|
if guard:
|
|
yield guard
|
|
for v in sorted(values):
|
|
yield v
|
|
yield '\n'
|
|
if guard:
|
|
yield '#endif\n'
|
|
yield '\n'
|
|
|
|
if [msg for msg in self.messages if hasattr(msg,'msgid')]:
|
|
yield '/* Message IDs (where set with "msgid" option) */\n'
|
|
for msg in self.messages:
|
|
if hasattr(msg,'msgid'):
|
|
yield '#define PB_MSG_%d %s\n' % (msg.msgid, msg.name)
|
|
yield '\n'
|
|
|
|
symbol = make_identifier(headername.split('.')[0])
|
|
yield '#define %s_MESSAGES \\\n' % symbol
|
|
|
|
for msg in self.messages:
|
|
m = "-1"
|
|
msize = msg.encoded_size(self.dependencies)
|
|
if msize is not None:
|
|
m = msize
|
|
if hasattr(msg,'msgid'):
|
|
yield '\tPB_MSG(%d,%s,%s) \\\n' % (msg.msgid, m, msg.name)
|
|
yield '\n'
|
|
|
|
for msg in self.messages:
|
|
if hasattr(msg,'msgid'):
|
|
yield '#define %s_msgid %d\n' % (msg.name, msg.msgid)
|
|
yield '\n'
|
|
|
|
yield '#ifdef __cplusplus\n'
|
|
yield '} /* extern "C" */\n'
|
|
yield '#endif\n'
|
|
|
|
if options.cpp_descriptors:
|
|
yield '\n'
|
|
yield '#ifdef __cplusplus\n'
|
|
yield '/* Message descriptors for nanopb */\n'
|
|
yield 'namespace nanopb {\n'
|
|
for msg in self.messages:
|
|
yield msg.fields_declaration_cpp_lookup() + '\n'
|
|
yield '} // namespace nanopb\n'
|
|
yield '\n'
|
|
yield '#endif /* __cplusplus */\n'
|
|
yield '\n'
|
|
|
|
if Globals.protoc_insertion_points:
|
|
yield '/* @@protoc_insertion_point(eof) */\n'
|
|
|
|
# End of header
|
|
yield '\n#endif\n'
|
|
|
|
def generate_source(self, headername, options):
|
|
'''Generate content for a source file.'''
|
|
|
|
yield '/* Automatically generated nanopb constant definitions */\n'
|
|
if options.notimestamp:
|
|
yield '/* Generated by %s */\n\n' % (nanopb_version)
|
|
else:
|
|
yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
|
|
yield options.genformat % (headername)
|
|
yield '\n'
|
|
|
|
if Globals.protoc_insertion_points:
|
|
yield '/* @@protoc_insertion_point(includes) */\n'
|
|
|
|
yield '#if PB_PROTO_HEADER_VERSION != 40\n'
|
|
yield '#error Regenerate this file with the current version of nanopb generator.\n'
|
|
yield '#endif\n'
|
|
yield '\n'
|
|
|
|
for msg in self.messages:
|
|
yield msg.fields_definition(self.dependencies) + '\n\n'
|
|
|
|
for ext in self.extensions:
|
|
yield ext.extension_def(self.dependencies) + '\n'
|
|
|
|
for enum in self.enums:
|
|
yield enum.enum_to_string_definition() + '\n'
|
|
|
|
# Add checks for numeric limits
|
|
if self.messages:
|
|
largest_msg = max(self.messages, key = lambda m: m.count_required_fields())
|
|
largest_count = largest_msg.count_required_fields()
|
|
if largest_count > 64:
|
|
yield '\n/* Check that missing required fields will be properly detected */\n'
|
|
yield '#if PB_MAX_REQUIRED_FIELDS < %d\n' % largest_count
|
|
yield '#error Properly detecting missing required fields in %s requires \\\n' % largest_msg.name
|
|
yield ' setting PB_MAX_REQUIRED_FIELDS to %d or more.\n' % largest_count
|
|
yield '#endif\n'
|
|
|
|
# Add check for sizeof(double)
|
|
has_double = False
|
|
for msg in self.messages:
|
|
for field in msg.all_fields():
|
|
if field.ctype == 'double':
|
|
has_double = True
|
|
|
|
if has_double:
|
|
yield '\n'
|
|
yield '#ifndef PB_CONVERT_DOUBLE_FLOAT\n'
|
|
yield '/* On some platforms (such as AVR), double is really float.\n'
|
|
yield ' * To be able to encode/decode double on these platforms, you need.\n'
|
|
yield ' * to define PB_CONVERT_DOUBLE_FLOAT in pb.h or compiler command line.\n'
|
|
yield ' */\n'
|
|
yield 'PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)\n'
|
|
yield '#endif\n'
|
|
|
|
yield '\n'
|
|
|
|
if Globals.protoc_insertion_points:
|
|
yield '/* @@protoc_insertion_point(eof) */\n'
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Options parsing for the .proto files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
from fnmatch import fnmatchcase
|
|
|
|
def read_options_file(infile):
|
|
'''Parse a separate options file to list:
|
|
[(namemask, options), ...]
|
|
'''
|
|
results = []
|
|
data = infile.read()
|
|
data = re.sub(r'/\*.*?\*/', '', data, flags = re.MULTILINE)
|
|
data = re.sub(r'//.*?$', '', data, flags = re.MULTILINE)
|
|
data = re.sub(r'#.*?$', '', data, flags = re.MULTILINE)
|
|
for i, line in enumerate(data.split('\n')):
|
|
line = line.strip()
|
|
if not line:
|
|
continue
|
|
|
|
parts = line.split(None, 1)
|
|
|
|
if len(parts) < 2:
|
|
sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
|
|
"Option lines should have space between field name and options. " +
|
|
"Skipping line: '%s'\n" % line)
|
|
sys.exit(1)
|
|
|
|
opts = nanopb_pb2.NanoPBOptions()
|
|
|
|
try:
|
|
text_format.Merge(parts[1], opts)
|
|
except Exception as e:
|
|
sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
|
|
"Unparsable option line: '%s'. " % line +
|
|
"Error: %s\n" % str(e))
|
|
sys.exit(1)
|
|
results.append((parts[0], opts))
|
|
|
|
return results
|
|
|
|
def get_nanopb_suboptions(subdesc, options, name):
|
|
'''Get copy of options, and merge information from subdesc.'''
|
|
new_options = nanopb_pb2.NanoPBOptions()
|
|
new_options.CopyFrom(options)
|
|
|
|
if hasattr(subdesc, 'syntax') and subdesc.syntax == "proto3":
|
|
new_options.proto3 = True
|
|
|
|
# Handle options defined in a separate file
|
|
dotname = '.'.join(name.parts)
|
|
for namemask, options in Globals.separate_options:
|
|
if fnmatchcase(dotname, namemask):
|
|
Globals.matched_namemasks.add(namemask)
|
|
new_options.MergeFrom(options)
|
|
|
|
# Handle options defined in .proto
|
|
if isinstance(subdesc.options, descriptor.FieldOptions):
|
|
ext_type = nanopb_pb2.nanopb
|
|
elif isinstance(subdesc.options, descriptor.FileOptions):
|
|
ext_type = nanopb_pb2.nanopb_fileopt
|
|
elif isinstance(subdesc.options, descriptor.MessageOptions):
|
|
ext_type = nanopb_pb2.nanopb_msgopt
|
|
elif isinstance(subdesc.options, descriptor.EnumOptions):
|
|
ext_type = nanopb_pb2.nanopb_enumopt
|
|
else:
|
|
raise Exception("Unknown options type")
|
|
|
|
if subdesc.options.HasExtension(ext_type):
|
|
ext = subdesc.options.Extensions[ext_type]
|
|
new_options.MergeFrom(ext)
|
|
|
|
if Globals.verbose_options:
|
|
sys.stderr.write("Options for " + dotname + ": ")
|
|
sys.stderr.write(text_format.MessageToString(new_options) + "\n")
|
|
|
|
return new_options
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Command line interface
|
|
# ---------------------------------------------------------------------------
|
|
|
|
import sys
|
|
import os.path
|
|
from optparse import OptionParser
|
|
|
|
optparser = OptionParser(
|
|
usage = "Usage: nanopb_generator.py [options] file.pb ...",
|
|
epilog = "Compile file.pb from file.proto by: 'protoc -ofile.pb file.proto'. " +
|
|
"Output will be written to file.pb.h and file.pb.c.")
|
|
optparser.add_option("--version", dest="version", action="store_true",
|
|
help="Show version info and exit")
|
|
optparser.add_option("-x", dest="exclude", metavar="FILE", action="append", default=[],
|
|
help="Exclude file from generated #include list.")
|
|
optparser.add_option("-e", "--extension", dest="extension", metavar="EXTENSION", default=".pb",
|
|
help="Set extension to use instead of '.pb' for generated files. [default: %default]")
|
|
optparser.add_option("-H", "--header-extension", dest="header_extension", metavar="EXTENSION", default=".h",
|
|
help="Set extension to use for generated header files. [default: %default]")
|
|
optparser.add_option("-S", "--source-extension", dest="source_extension", metavar="EXTENSION", default=".c",
|
|
help="Set extension to use for generated source files. [default: %default]")
|
|
optparser.add_option("-f", "--options-file", dest="options_file", metavar="FILE", default="%s.options",
|
|
help="Set name of a separate generator options file.")
|
|
optparser.add_option("-I", "--options-path", "--proto-path", dest="options_path", metavar="DIR",
|
|
action="append", default = [],
|
|
help="Search path for .options and .proto files. Also determines relative paths for output directory structure.")
|
|
optparser.add_option("--error-on-unmatched", dest="error_on_unmatched", action="store_true", default=False,
|
|
help ="Stop generation if there are unmatched fields in options file")
|
|
optparser.add_option("--no-error-on-unmatched", dest="error_on_unmatched", action="store_false", default=False,
|
|
help ="Continue generation if there are unmatched fields in options file (default)")
|
|
optparser.add_option("-D", "--output-dir", dest="output_dir",
|
|
metavar="OUTPUTDIR", default=None,
|
|
help="Output directory of .pb.h and .pb.c files")
|
|
optparser.add_option("-Q", "--generated-include-format", dest="genformat",
|
|
metavar="FORMAT", default='#include "%s"',
|
|
help="Set format string to use for including other .pb.h files. [default: %default]")
|
|
optparser.add_option("-L", "--library-include-format", dest="libformat",
|
|
metavar="FORMAT", default='#include <%s>',
|
|
help="Set format string to use for including the nanopb pb.h header. [default: %default]")
|
|
optparser.add_option("--strip-path", dest="strip_path", action="store_true", default=False,
|
|
help="Strip directory path from #included .pb.h file name")
|
|
optparser.add_option("--no-strip-path", dest="strip_path", action="store_false",
|
|
help="Opposite of --strip-path (default since 0.4.0)")
|
|
optparser.add_option("--cpp-descriptors", action="store_true",
|
|
help="Generate C++ descriptors to lookup by type (e.g. pb_field_t for a message)")
|
|
optparser.add_option("-T", "--no-timestamp", dest="notimestamp", action="store_true", default=True,
|
|
help="Don't add timestamp to .pb.h and .pb.c preambles (default since 0.4.0)")
|
|
optparser.add_option("-t", "--timestamp", dest="notimestamp", action="store_false", default=True,
|
|
help="Add timestamp to .pb.h and .pb.c preambles")
|
|
optparser.add_option("-q", "--quiet", dest="quiet", action="store_true", default=False,
|
|
help="Don't print anything except errors.")
|
|
optparser.add_option("-v", "--verbose", dest="verbose", action="store_true", default=False,
|
|
help="Print more information.")
|
|
optparser.add_option("-s", dest="settings", metavar="OPTION:VALUE", action="append", default=[],
|
|
help="Set generator option (max_size, max_count etc.).")
|
|
optparser.add_option("--protoc-insertion-points", dest="protoc_insertion_points", action="store_true", default=False,
|
|
help="Include insertion point comments in output for use by custom protoc plugins")
|
|
|
|
def parse_file(filename, fdesc, options):
|
|
'''Parse a single file. Returns a ProtoFile instance.'''
|
|
toplevel_options = nanopb_pb2.NanoPBOptions()
|
|
for s in options.settings:
|
|
text_format.Merge(s, toplevel_options)
|
|
|
|
if not fdesc:
|
|
data = open(filename, 'rb').read()
|
|
fdesc = descriptor.FileDescriptorSet.FromString(data).file[0]
|
|
|
|
# Check if there is a separate .options file
|
|
had_abspath = False
|
|
try:
|
|
optfilename = options.options_file % os.path.splitext(filename)[0]
|
|
except TypeError:
|
|
# No %s specified, use the filename as-is
|
|
optfilename = options.options_file
|
|
had_abspath = True
|
|
|
|
paths = ['.'] + options.options_path
|
|
for p in paths:
|
|
if os.path.isfile(os.path.join(p, optfilename)):
|
|
optfilename = os.path.join(p, optfilename)
|
|
if options.verbose:
|
|
sys.stderr.write('Reading options from ' + optfilename + '\n')
|
|
Globals.separate_options = read_options_file(open(optfilename, 'r', encoding = 'utf-8'))
|
|
break
|
|
else:
|
|
# If we are given a full filename and it does not exist, give an error.
|
|
# However, don't give error when we automatically look for .options file
|
|
# with the same name as .proto.
|
|
if options.verbose or had_abspath:
|
|
sys.stderr.write('Options file not found: ' + optfilename + '\n')
|
|
Globals.separate_options = []
|
|
|
|
Globals.matched_namemasks = set()
|
|
Globals.protoc_insertion_points = options.protoc_insertion_points
|
|
|
|
# Parse the file
|
|
file_options = get_nanopb_suboptions(fdesc, toplevel_options, Names([filename]))
|
|
f = ProtoFile(fdesc, file_options)
|
|
f.optfilename = optfilename
|
|
|
|
return f
|
|
|
|
def process_file(filename, fdesc, options, other_files = {}):
|
|
'''Process a single file.
|
|
filename: The full path to the .proto or .pb source file, as string.
|
|
fdesc: The loaded FileDescriptorSet, or None to read from the input file.
|
|
options: Command line options as they come from OptionsParser.
|
|
|
|
Returns a dict:
|
|
{'headername': Name of header file,
|
|
'headerdata': Data for the .h header file,
|
|
'sourcename': Name of the source code file,
|
|
'sourcedata': Data for the .c source code file
|
|
}
|
|
'''
|
|
f = parse_file(filename, fdesc, options)
|
|
|
|
# Check the list of dependencies, and if they are available in other_files,
|
|
# add them to be considered for import resolving. Recursively add any files
|
|
# imported by the dependencies.
|
|
deps = list(f.fdesc.dependency)
|
|
while deps:
|
|
dep = deps.pop(0)
|
|
if dep in other_files:
|
|
f.add_dependency(other_files[dep])
|
|
deps += list(other_files[dep].fdesc.dependency)
|
|
|
|
# Decide the file names
|
|
noext = os.path.splitext(filename)[0]
|
|
headername = noext + options.extension + options.header_extension
|
|
sourcename = noext + options.extension + options.source_extension
|
|
|
|
if options.strip_path:
|
|
headerbasename = os.path.basename(headername)
|
|
else:
|
|
headerbasename = headername
|
|
|
|
# List of .proto files that should not be included in the C header file
|
|
# even if they are mentioned in the source .proto.
|
|
excludes = ['nanopb.proto', 'google/protobuf/descriptor.proto'] + options.exclude + list(f.file_options.exclude)
|
|
includes = [d for d in f.fdesc.dependency if d not in excludes]
|
|
|
|
headerdata = ''.join(f.generate_header(includes, headerbasename, options))
|
|
sourcedata = ''.join(f.generate_source(headerbasename, options))
|
|
|
|
# Check if there were any lines in .options that did not match a member
|
|
unmatched = [n for n,o in Globals.separate_options if n not in Globals.matched_namemasks]
|
|
if unmatched:
|
|
if options.error_on_unmatched:
|
|
raise Exception("Following patterns in " + f.optfilename + " did not match any fields: "
|
|
+ ', '.join(unmatched));
|
|
elif not options.quiet:
|
|
sys.stderr.write("Following patterns in " + f.optfilename + " did not match any fields: "
|
|
+ ', '.join(unmatched) + "\n")
|
|
|
|
if not Globals.verbose_options:
|
|
sys.stderr.write("Use protoc --nanopb-out=-v:. to see a list of the field names.\n")
|
|
|
|
return {'headername': headername, 'headerdata': headerdata,
|
|
'sourcename': sourcename, 'sourcedata': sourcedata}
|
|
|
|
def main_cli():
|
|
'''Main function when invoked directly from the command line.'''
|
|
|
|
options, filenames = optparser.parse_args()
|
|
|
|
if options.version:
|
|
print(nanopb_version)
|
|
sys.exit(0)
|
|
|
|
if not filenames:
|
|
optparser.print_help()
|
|
sys.exit(1)
|
|
|
|
if options.quiet:
|
|
options.verbose = False
|
|
|
|
if options.output_dir and not os.path.exists(options.output_dir):
|
|
optparser.print_help()
|
|
sys.stderr.write("\noutput_dir does not exist: %s\n" % options.output_dir)
|
|
sys.exit(1)
|
|
|
|
if options.verbose:
|
|
sys.stderr.write("Nanopb version %s\n" % nanopb_version)
|
|
sys.stderr.write('Google Python protobuf library imported from %s, version %s\n'
|
|
% (google.protobuf.__file__, google.protobuf.__version__))
|
|
|
|
# Load .pb files into memory and compile any .proto files.
|
|
include_path = ['-I%s' % p for p in options.options_path]
|
|
all_fdescs = {}
|
|
out_fdescs = {}
|
|
for filename in filenames:
|
|
if filename.endswith(".proto"):
|
|
with TemporaryDirectory() as tmpdir:
|
|
tmpname = os.path.join(tmpdir, os.path.basename(filename) + ".pb")
|
|
status = invoke_protoc(["protoc"] + include_path + ['--include_imports', '--include_source_info', '-o' + tmpname, filename])
|
|
if status != 0: sys.exit(status)
|
|
data = open(tmpname, 'rb').read()
|
|
else:
|
|
data = open(filename, 'rb').read()
|
|
|
|
fdescs = descriptor.FileDescriptorSet.FromString(data).file
|
|
last_fdesc = fdescs[-1]
|
|
|
|
for fdesc in fdescs:
|
|
all_fdescs[fdesc.name] = fdesc
|
|
|
|
out_fdescs[last_fdesc.name] = last_fdesc
|
|
|
|
# Process any include files first, in order to have them
|
|
# available as dependencies
|
|
other_files = {}
|
|
for fdesc in all_fdescs.values():
|
|
other_files[fdesc.name] = parse_file(fdesc.name, fdesc, options)
|
|
|
|
# Then generate the headers / sources
|
|
Globals.verbose_options = options.verbose
|
|
for fdesc in out_fdescs.values():
|
|
results = process_file(fdesc.name, fdesc, options, other_files)
|
|
|
|
base_dir = options.output_dir or ''
|
|
to_write = [
|
|
(os.path.join(base_dir, results['headername']), results['headerdata']),
|
|
(os.path.join(base_dir, results['sourcename']), results['sourcedata']),
|
|
]
|
|
|
|
if not options.quiet:
|
|
paths = " and ".join([x[0] for x in to_write])
|
|
sys.stderr.write("Writing to %s\n" % paths)
|
|
|
|
for path, data in to_write:
|
|
dirname = os.path.dirname(path)
|
|
if dirname and not os.path.exists(dirname):
|
|
os.makedirs(dirname)
|
|
|
|
with open(path, 'w') as f:
|
|
f.write(data)
|
|
|
|
def main_plugin():
|
|
'''Main function when invoked as a protoc plugin.'''
|
|
|
|
import io, sys
|
|
if sys.platform == "win32":
|
|
import os, msvcrt
|
|
# Set stdin and stdout to binary mode
|
|
msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
|
|
msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
|
|
|
|
data = io.open(sys.stdin.fileno(), "rb").read()
|
|
|
|
request = plugin_pb2.CodeGeneratorRequest.FromString(data)
|
|
|
|
try:
|
|
# Versions of Python prior to 2.7.3 do not support unicode
|
|
# input to shlex.split(). Try to convert to str if possible.
|
|
params = str(request.parameter)
|
|
except UnicodeEncodeError:
|
|
params = request.parameter
|
|
|
|
import shlex
|
|
args = shlex.split(params)
|
|
|
|
if len(args) == 1 and ',' in args[0]:
|
|
# For compatibility with other protoc plugins, support options
|
|
# separated by comma.
|
|
lex = shlex.shlex(params)
|
|
lex.whitespace_split = True
|
|
lex.whitespace = ','
|
|
lex.commenters = ''
|
|
args = list(lex)
|
|
|
|
optparser.usage = "Usage: protoc --nanopb_out=[options][,more_options]:outdir file.proto"
|
|
optparser.epilog = "Output will be written to file.pb.h and file.pb.c."
|
|
|
|
if '-h' in args or '--help' in args:
|
|
# By default optparser prints help to stdout, which doesn't work for
|
|
# protoc plugins.
|
|
optparser.print_help(sys.stderr)
|
|
sys.exit(1)
|
|
|
|
options, dummy = optparser.parse_args(args)
|
|
|
|
if options.version:
|
|
sys.stderr.write('%s\n' % (nanopb_version))
|
|
sys.exit(0)
|
|
|
|
Globals.verbose_options = options.verbose
|
|
|
|
if options.verbose:
|
|
sys.stderr.write("Nanopb version %s\n" % nanopb_version)
|
|
sys.stderr.write('Google Python protobuf library imported from %s, version %s\n'
|
|
% (google.protobuf.__file__, google.protobuf.__version__))
|
|
|
|
response = plugin_pb2.CodeGeneratorResponse()
|
|
|
|
# Google's protoc does not currently indicate the full path of proto files.
|
|
# Instead always add the main file path to the search dirs, that works for
|
|
# the common case.
|
|
import os.path
|
|
options.options_path.append(os.path.dirname(request.file_to_generate[0]))
|
|
|
|
# Process any include files first, in order to have them
|
|
# available as dependencies
|
|
other_files = {}
|
|
for fdesc in request.proto_file:
|
|
other_files[fdesc.name] = parse_file(fdesc.name, fdesc, options)
|
|
|
|
for filename in request.file_to_generate:
|
|
for fdesc in request.proto_file:
|
|
if fdesc.name == filename:
|
|
results = process_file(filename, fdesc, options, other_files)
|
|
|
|
f = response.file.add()
|
|
f.name = results['headername']
|
|
f.content = results['headerdata']
|
|
|
|
f = response.file.add()
|
|
f.name = results['sourcename']
|
|
f.content = results['sourcedata']
|
|
|
|
if hasattr(plugin_pb2.CodeGeneratorResponse, "FEATURE_PROTO3_OPTIONAL"):
|
|
response.supported_features = plugin_pb2.CodeGeneratorResponse.FEATURE_PROTO3_OPTIONAL
|
|
|
|
io.open(sys.stdout.fileno(), "wb").write(response.SerializeToString())
|
|
|
|
if __name__ == '__main__':
|
|
# Check if we are running as a plugin under protoc
|
|
if 'protoc-gen-' in sys.argv[0] or '--protoc-plugin' in sys.argv:
|
|
main_plugin()
|
|
else:
|
|
main_cli()
|