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Diffstat (limited to 'systrace/catapult/common/py_trace_event/third_party/protobuf/wire_format.py')
-rw-r--r-- | systrace/catapult/common/py_trace_event/third_party/protobuf/wire_format.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/systrace/catapult/common/py_trace_event/third_party/protobuf/wire_format.py b/systrace/catapult/common/py_trace_event/third_party/protobuf/wire_format.py new file mode 100644 index 0000000..9341e6f --- /dev/null +++ b/systrace/catapult/common/py_trace_event/third_party/protobuf/wire_format.py @@ -0,0 +1,52 @@ +# Protocol Buffers - Google's data interchange format +# Copyright 2008 Google Inc. All rights reserved. +# https://developers.google.com/protocol-buffers/ +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following disclaimer +# in the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Google Inc. nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +TAG_TYPE_BITS = 3 # Number of bits used to hold type info in a proto tag. + +WIRETYPE_VARINT = 0 +WIRETYPE_FIXED64 = 1 +WIRETYPE_LENGTH_DELIMITED = 2 +WIRETYPE_START_GROUP = 3 +WIRETYPE_END_GROUP = 4 +WIRETYPE_FIXED32 = 5 +_WIRETYPE_MAX = 5 + +def PackTag(field_number, wire_type): + """Returns an unsigned 32-bit integer that encodes the field number and + wire type information in standard protocol message wire format. + + Args: + field_number: Expected to be an integer in the range [1, 1 << 29) + wire_type: One of the WIRETYPE_* constants. + """ + if not 0 <= wire_type <= _WIRETYPE_MAX: + raise RuntimeError('Unknown wire type: %d' % wire_type) + return (field_number << TAG_TYPE_BITS) | wire_type + |