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Chromium_Depot_tools
Commit dc128319 authored by sergiyb@chromium.org's avatar sergiyb@chromium.org
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Added tools to retrieve CQ builders from a CQ config 

R=pgervais@chromium.org

Review URL: https://codereview.chromium.org/1153333003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295461 0039d316-1c4b-4281-b951-d872f2087c98
parent 5b3bebb1
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commit_queue.py
View file @ dc128319
......@@ -9,6 +9,7 @@
__version__ = '0.1'
import functools
import json
import logging
import optparse
import os
......@@ -21,6 +22,11 @@ import auth
import fix_encoding
import rietveld
THIRD_PARTY_DIR = os.path.join(os.path.dirname(__file__), 'third_party')
sys.path.append(THIRD_PARTY_DIR)
from cq_client import cq_pb2
from google.protobuf import text_format
def usage(more):
def hook(fn):
......@@ -102,6 +108,46 @@ def CMDclear(parser, args):
return set_commit(obj, options.issue, '0')
def CMDbuilders(parser, args):
"""Prints json-formatted list of builders given a path to cq.cfg file.
The output is a dictionary in the following format:
{
'master_name': {
'builder_name': {
'custom_property': 'value',
'testfilter': 'compile'
},
'another_builder': {}
},
'another_master': {
'third_builder': {}
}
}
"""
_, args = parser.parse_args(args)
if len(args) != 1:
parser.error('Expected a single path to CQ config. Got: %s' %
' '.join(args))
with open(args[0]) as config_file:
cq_config = config_file.read()
config = cq_pb2.Config()
text_format.Merge(cq_config, config)
masters = {}
if config.HasField('verifiers') and config.verifiers.HasField('try_job'):
for bucket in config.verifiers.try_job.buckets:
masters.setdefault(bucket.name, {})
for builder in bucket.builders:
if not builder.HasField('experiment_percentage'):
masters[bucket.name].setdefault(builder.name, {})
for prop in builder.properties:
masters[bucket.name][builder.name][prop.name] = prop.value
print json.dumps(masters)
CMDbuilders.func_usage_more = '<path-to-cq-config>'
###############################################################################
## Boilerplate code
......
third_party/cq_client/__init__.py 0 → 100644
View file @ dc128319
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
third_party/cq_client/cq.proto 0 → 100644
View file @ dc128319
syntax = "proto2";
// This message describes a Commit Queue configuration. The config file cq.cfg
// should be stored in the config directory located on the branch that this CQ
// should commit to.
message Config {
// Required. Version of the config format.
optional int32 version = 1;
// Required. Name of the CQ. May only contain characters [a-zA-Z0-9_]. It is
// used for various purposes, including, but not limited to match the project
// name for CLs on Rietveld, name of the project in the status app, internal
// name for logging etc. CQ name should not be confused with the project name
// in LUCI as there may be multiple CQs per project.
optional string cq_name = 2;
// List of verifiers that verify if the CL is ready to be committed.
optional Verifiers verifiers = 3;
// URL of the CQ status app to push updates to.
optional string cq_status_url = 4;
// When true, hash of the commit is not posted by CQ. This is used for
// projects using gnumbd as latter publishes actual hash later. Default value
// is false.
optional bool hide_ref_in_committed_msg = 5;
// Delay between commit bursts in seconds. Default value is 480.
optional int32 commit_burst_delay = 6;
// Maximum number of commits done sequentially, before waiting for
// commit_burst_delay. Default value is 4.
optional int32 max_commit_burst = 7;
// Defines whether a CQ is used in production. Allows to disable CQ for a
// given branch. Default is true.
optional bool in_production = 8;
// Configuration options for Rietveld code review.
optional Rietveld rietveld = 9;
// This can be used to override the Git repository URL used to checkout and
// commit changes on CQ host. This should only be used in case, when the
// source repository is not supported by luci-config (e.g. GitHub).
optional string git_repo_url = 10;
// Target ref to commit to. This can be used to specify a different ref than
// the one where the luci config is located. This is useful, e.g. for projects
// that use gnumbd where CQ should commit into a pending ref.
optional string target_ref = 11;
// Deprecated. URL of the SVN repository. We are deprecating SVN support.
optional string svn_repo_url = 12;
// Deprecated. Should be set to true, when the project's SVN repository does
// not have server-side hooks configured.
optional bool server_hooks_missing = 13;
// Deprecated. Specifies a list of verifiers that are run on a local checkout
// with patch applied. The only remaining use case for this is PRESUBMIT_CHECK
// verifier, which we are deprecating as well.
optional Verifiers verifiers_with_patch = 14;
}
message Rietveld {
// Required. URL of the codereview site.
optional string url = 1;
// List of regular expressions used to check if CL's base URL should be
// processed by this CQ. This may be useful if a single branch has multiple
// sub-directories that are handled by different CQs. When no regular
// expressions are specified, the regular expression '.*', which matches any
// directory, is used.
repeated string project_bases = 2;
}
// Verifiers are various types of checks that a Commit Queue performs on a CL.
// All verifiers must pass in order for a CL to be landed. Configuration file
// describes types of verifiers that should be applied to each CL and their
// parameters.
message Verifiers {
// This verifier is used to ensure that an LGTM was posted to the code review
// site from a valid project committer.
optional ReviewerLgtmVerifier reviewer_lgtm = 1;
// This verifier is used to check tree status before committing a CL. If the
// tree is closed, then the verifier will wait until it is reopened.
optional TreeStatusLgtmVerifier tree_status = 2;
// This verifier triggers a set of tryjobs that are to be run on builders on
// Buildbot. It automatically retries failed try-jobs and only allows CL to
// land if each builder has succeeded in the latest retry. If a given tryjob
// result is too old (>1 day) it is ignored.
optional TryJobVerifier try_job = 3;
// Deprecated. This verifier is only used by some legacy CQs that run
// presubmit on the CQ host. Please use a presubmit builder instead.
optional PresubmitCheckVerifier presubmit_check = 4;
message ReviewerLgtmVerifier {
// Required. Name of the project, whose committer list to use. This allows
// to reuse committer lists. Note that if you are adding a new list, then
// currently you will need to make changes to the CQ code to add support for
// retrieving such a list. We are working on removing the need to modify CQ
// code.
optional string committer_list = 1;
// Number of seconds to wait for LGTM on CQ. Default value is 0.
optional int32 max_wait_secs = 2;
// Message to be posted to code review site when no LGTM is found. Default
// value is "No LGTM from a valid reviewer yet. Only full committers are "
// "accepted.\nEven if an LGTM may have been provided, it was from a "
// "non-committer,\n_not_ a full super star committer.\nSee "
// "http://www.chromium.org/getting-involved/become-a-committer\nNote that "
// "this has nothing to do with OWNERS files."
optional string no_lgtm_msg = 3;
}
message TreeStatusLgtmVerifier {
// Required. URL of the project tree status app.
optional string tree_status_url = 1;
}
message TryJobVerifier {
message Property {
optional string name = 1;
// TODO(sergiyb): Change type to Any on switching to protobuf3.
optional string value = 2;
}
message Builder {
// Name of the builder.
optional string name = 1;
// When true, the builder is triggered by CQ. Otherwise, it is expected to
// be triggered from another tryjob. Default value is true.
optional bool triggered = 2;
// Arbitrary properties passed to the tryjob.
repeated Property properties = 3;
// When this field is present, it marks given builder as experimental. It
// is only executed on a given percentage of the CLs and the outcome does
// not affect the decicion whether a CL can land or not. This is typically
// used to test new builders and estimate their capacity requirements.
optional float experiment_percentage = 4;
}
message Bucket {
// Name of the bucket. This is typically the same as a master name.
optional string name = 1;
// Builders on which tryjobs should be triggered.
repeated Builder builders = 2;
}
// Buckets on which tryjobs are triggered/watched.
repeated Bucket buckets = 1;
}
message PresubmitCheckVerifier {}
}
third_party/cq_client/cq_pb2.py 0 → 100644
View file @ dc128319
# Generated by the protocol buffer compiler. DO NOT EDIT!
# source: cq.proto
import sys
_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
from google.protobuf import descriptor_pb2
# @@protoc_insertion_point(imports)
_sym_db = _symbol_database.Default()
DESCRIPTOR = _descriptor.FileDescriptor(
name='cq.proto',
package='',
serialized_pb=_b('\n\x08\x63q.proto\"\xf5\x02\n\x06\x43onfig\x12\x0f\n\x07version\x18\x01 \x01(\x05\x12\x0f\n\x07\x63q_name\x18\x02 \x01(\t\x12\x1d\n\tverifiers\x18\x03 \x01(\x0b\x32\n.Verifiers\x12\x15\n\rcq_status_url\x18\x04 \x01(\t\x12!\n\x19hide_ref_in_committed_msg\x18\x05 \x01(\x08\x12\x1a\n\x12\x63ommit_burst_delay\x18\x06 \x01(\x05\x12\x18\n\x10max_commit_burst\x18\x07 \x01(\x05\x12\x15\n\rin_production\x18\x08 \x01(\x08\x12\x1b\n\x08rietveld\x18\t \x01(\x0b\x32\t.Rietveld\x12\x14\n\x0cgit_repo_url\x18\n \x01(\t\x12\x12\n\ntarget_ref\x18\x0b \x01(\t\x12\x14\n\x0csvn_repo_url\x18\x0c \x01(\t\x12\x1c\n\x14server_hooks_missing\x18\r \x01(\x08\x12(\n\x14verifiers_with_patch\x18\x0e \x01(\x0b\x32\n.Verifiers\".\n\x08Rietveld\x12\x0b\n\x03url\x18\x01 \x01(\t\x12\x15\n\rproject_bases\x18\x02 \x03(\t\"\xcc\x05\n\tVerifiers\x12\x36\n\rreviewer_lgtm\x18\x01 \x01(\x0b\x32\x1f.Verifiers.ReviewerLgtmVerifier\x12\x36\n\x0btree_status\x18\x02 \x01(\x0b\x32!.Verifiers.TreeStatusLgtmVerifier\x12*\n\x07try_job\x18\x03 \x01(\x0b\x32\x19.Verifiers.TryJobVerifier\x12:\n\x0fpresubmit_check\x18\x04 \x01(\x0b\x32!.Verifiers.PresubmitCheckVerifier\x1aZ\n\x14ReviewerLgtmVerifier\x12\x16\n\x0e\x63ommitter_list\x18\x01 \x01(\t\x12\x15\n\rmax_wait_secs\x18\x02 \x01(\x05\x12\x13\n\x0bno_lgtm_msg\x18\x03 \x01(\t\x1a\x31\n\x16TreeStatusLgtmVerifier\x12\x17\n\x0ftree_status_url\x18\x01 \x01(\t\x1a\xbd\x02\n\x0eTryJobVerifier\x12\x31\n\x07\x62uckets\x18\x01 \x03(\x0b\x32 .Verifiers.TryJobVerifier.Bucket\x1a\'\n\x08Property\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\r\n\x05value\x18\x02 \x01(\t\x1a\x81\x01\n\x07\x42uilder\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\x11\n\ttriggered\x18\x02 \x01(\x08\x12\x36\n\nproperties\x18\x03 \x03(\x0b\x32\".Verifiers.TryJobVerifier.Property\x12\x1d\n\x15\x65xperiment_percentage\x18\x04 \x01(\x02\x1aK\n\x06\x42ucket\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\x33\n\x08\x62uilders\x18\x02 \x03(\x0b\x32!.Verifiers.TryJobVerifier.Builder\x1a\x18\n\x16PresubmitCheckVerifier')
)
_sym_db.RegisterFileDescriptor(DESCRIPTOR)
_CONFIG = _descriptor.Descriptor(
name='Config',
full_name='Config',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='version', full_name='Config.version', index=0,
number=1, type=5, cpp_type=1, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='cq_name', full_name='Config.cq_name', index=1,
number=2, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='verifiers', full_name='Config.verifiers', index=2,
number=3, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='cq_status_url', full_name='Config.cq_status_url', index=3,
number=4, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='hide_ref_in_committed_msg', full_name='Config.hide_ref_in_committed_msg', index=4,
number=5, type=8, cpp_type=7, label=1,
has_default_value=False, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='commit_burst_delay', full_name='Config.commit_burst_delay', index=5,
number=6, type=5, cpp_type=1, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='max_commit_burst', full_name='Config.max_commit_burst', index=6,
number=7, type=5, cpp_type=1, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='in_production', full_name='Config.in_production', index=7,
number=8, type=8, cpp_type=7, label=1,
has_default_value=False, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='rietveld', full_name='Config.rietveld', index=8,
number=9, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='git_repo_url', full_name='Config.git_repo_url', index=9,
number=10, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='target_ref', full_name='Config.target_ref', index=10,
number=11, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='svn_repo_url', full_name='Config.svn_repo_url', index=11,
number=12, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='server_hooks_missing', full_name='Config.server_hooks_missing', index=12,
number=13, type=8, cpp_type=7, label=1,
has_default_value=False, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='verifiers_with_patch', full_name='Config.verifiers_with_patch', index=13,
number=14, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=13,
serialized_end=386,
)
_RIETVELD = _descriptor.Descriptor(
name='Rietveld',
full_name='Rietveld',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='url', full_name='Rietveld.url', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='project_bases', full_name='Rietveld.project_bases', index=1,
number=2, type=9, cpp_type=9, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=388,
serialized_end=434,
)
_VERIFIERS_REVIEWERLGTMVERIFIER = _descriptor.Descriptor(
name='ReviewerLgtmVerifier',
full_name='Verifiers.ReviewerLgtmVerifier',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='committer_list', full_name='Verifiers.ReviewerLgtmVerifier.committer_list', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='max_wait_secs', full_name='Verifiers.ReviewerLgtmVerifier.max_wait_secs', index=1,
number=2, type=5, cpp_type=1, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='no_lgtm_msg', full_name='Verifiers.ReviewerLgtmVerifier.no_lgtm_msg', index=2,
number=3, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=666,
serialized_end=756,
)
_VERIFIERS_TREESTATUSLGTMVERIFIER = _descriptor.Descriptor(
name='TreeStatusLgtmVerifier',
full_name='Verifiers.TreeStatusLgtmVerifier',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='tree_status_url', full_name='Verifiers.TreeStatusLgtmVerifier.tree_status_url', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=758,
serialized_end=807,
)
_VERIFIERS_TRYJOBVERIFIER_PROPERTY = _descriptor.Descriptor(
name='Property',
full_name='Verifiers.TryJobVerifier.Property',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='Verifiers.TryJobVerifier.Property.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='value', full_name='Verifiers.TryJobVerifier.Property.value', index=1,
number=2, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=879,
serialized_end=918,
)
_VERIFIERS_TRYJOBVERIFIER_BUILDER = _descriptor.Descriptor(
name='Builder',
full_name='Verifiers.TryJobVerifier.Builder',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='Verifiers.TryJobVerifier.Builder.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='triggered', full_name='Verifiers.TryJobVerifier.Builder.triggered', index=1,
number=2, type=8, cpp_type=7, label=1,
has_default_value=False, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='properties', full_name='Verifiers.TryJobVerifier.Builder.properties', index=2,
number=3, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='experiment_percentage', full_name='Verifiers.TryJobVerifier.Builder.experiment_percentage', index=3,
number=4, type=2, cpp_type=6, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=921,
serialized_end=1050,
)
_VERIFIERS_TRYJOBVERIFIER_BUCKET = _descriptor.Descriptor(
name='Bucket',
full_name='Verifiers.TryJobVerifier.Bucket',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='Verifiers.TryJobVerifier.Bucket.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='builders', full_name='Verifiers.TryJobVerifier.Bucket.builders', index=1,
number=2, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=1052,
serialized_end=1127,
)
_VERIFIERS_TRYJOBVERIFIER = _descriptor.Descriptor(
name='TryJobVerifier',
full_name='Verifiers.TryJobVerifier',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='buckets', full_name='Verifiers.TryJobVerifier.buckets', index=0,
number=1, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[_VERIFIERS_TRYJOBVERIFIER_PROPERTY, _VERIFIERS_TRYJOBVERIFIER_BUILDER, _VERIFIERS_TRYJOBVERIFIER_BUCKET, ],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=810,
serialized_end=1127,
)
_VERIFIERS_PRESUBMITCHECKVERIFIER = _descriptor.Descriptor(
name='PresubmitCheckVerifier',
full_name='Verifiers.PresubmitCheckVerifier',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=1129,
serialized_end=1153,
)
_VERIFIERS = _descriptor.Descriptor(
name='Verifiers',
full_name='Verifiers',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='reviewer_lgtm', full_name='Verifiers.reviewer_lgtm', index=0,
number=1, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='tree_status', full_name='Verifiers.tree_status', index=1,
number=2, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='try_job', full_name='Verifiers.try_job', index=2,
number=3, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='presubmit_check', full_name='Verifiers.presubmit_check', index=3,
number=4, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[_VERIFIERS_REVIEWERLGTMVERIFIER, _VERIFIERS_TREESTATUSLGTMVERIFIER, _VERIFIERS_TRYJOBVERIFIER, _VERIFIERS_PRESUBMITCHECKVERIFIER, ],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=437,
serialized_end=1153,
)
_CONFIG.fields_by_name['verifiers'].message_type = _VERIFIERS
_CONFIG.fields_by_name['rietveld'].message_type = _RIETVELD
_CONFIG.fields_by_name['verifiers_with_patch'].message_type = _VERIFIERS
_VERIFIERS_REVIEWERLGTMVERIFIER.containing_type = _VERIFIERS
_VERIFIERS_TREESTATUSLGTMVERIFIER.containing_type = _VERIFIERS
_VERIFIERS_TRYJOBVERIFIER_PROPERTY.containing_type = _VERIFIERS_TRYJOBVERIFIER
_VERIFIERS_TRYJOBVERIFIER_BUILDER.fields_by_name['properties'].message_type = _VERIFIERS_TRYJOBVERIFIER_PROPERTY
_VERIFIERS_TRYJOBVERIFIER_BUILDER.containing_type = _VERIFIERS_TRYJOBVERIFIER
_VERIFIERS_TRYJOBVERIFIER_BUCKET.fields_by_name['builders'].message_type = _VERIFIERS_TRYJOBVERIFIER_BUILDER
_VERIFIERS_TRYJOBVERIFIER_BUCKET.containing_type = _VERIFIERS_TRYJOBVERIFIER
_VERIFIERS_TRYJOBVERIFIER.fields_by_name['buckets'].message_type = _VERIFIERS_TRYJOBVERIFIER_BUCKET
_VERIFIERS_TRYJOBVERIFIER.containing_type = _VERIFIERS
_VERIFIERS_PRESUBMITCHECKVERIFIER.containing_type = _VERIFIERS
_VERIFIERS.fields_by_name['reviewer_lgtm'].message_type = _VERIFIERS_REVIEWERLGTMVERIFIER
_VERIFIERS.fields_by_name['tree_status'].message_type = _VERIFIERS_TREESTATUSLGTMVERIFIER
_VERIFIERS.fields_by_name['try_job'].message_type = _VERIFIERS_TRYJOBVERIFIER
_VERIFIERS.fields_by_name['presubmit_check'].message_type = _VERIFIERS_PRESUBMITCHECKVERIFIER
DESCRIPTOR.message_types_by_name['Config'] = _CONFIG
DESCRIPTOR.message_types_by_name['Rietveld'] = _RIETVELD
DESCRIPTOR.message_types_by_name['Verifiers'] = _VERIFIERS
Config = _reflection.GeneratedProtocolMessageType('Config', (_message.Message,), dict(
DESCRIPTOR = _CONFIG,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Config)
))
_sym_db.RegisterMessage(Config)
Rietveld = _reflection.GeneratedProtocolMessageType('Rietveld', (_message.Message,), dict(
DESCRIPTOR = _RIETVELD,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Rietveld)
))
_sym_db.RegisterMessage(Rietveld)
Verifiers = _reflection.GeneratedProtocolMessageType('Verifiers', (_message.Message,), dict(
ReviewerLgtmVerifier = _reflection.GeneratedProtocolMessageType('ReviewerLgtmVerifier', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_REVIEWERLGTMVERIFIER,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.ReviewerLgtmVerifier)
))
,
TreeStatusLgtmVerifier = _reflection.GeneratedProtocolMessageType('TreeStatusLgtmVerifier', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_TREESTATUSLGTMVERIFIER,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.TreeStatusLgtmVerifier)
))
,
TryJobVerifier = _reflection.GeneratedProtocolMessageType('TryJobVerifier', (_message.Message,), dict(
Property = _reflection.GeneratedProtocolMessageType('Property', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_TRYJOBVERIFIER_PROPERTY,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.TryJobVerifier.Property)
))
,
Builder = _reflection.GeneratedProtocolMessageType('Builder', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_TRYJOBVERIFIER_BUILDER,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.TryJobVerifier.Builder)
))
,
Bucket = _reflection.GeneratedProtocolMessageType('Bucket', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_TRYJOBVERIFIER_BUCKET,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.TryJobVerifier.Bucket)
))
,
DESCRIPTOR = _VERIFIERS_TRYJOBVERIFIER,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.TryJobVerifier)
))
,
PresubmitCheckVerifier = _reflection.GeneratedProtocolMessageType('PresubmitCheckVerifier', (_message.Message,), dict(
DESCRIPTOR = _VERIFIERS_PRESUBMITCHECKVERIFIER,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers.PresubmitCheckVerifier)
))
,
DESCRIPTOR = _VERIFIERS,
__module__ = 'cq_pb2'
# @@protoc_insertion_point(class_scope:Verifiers)
))
_sym_db.RegisterMessage(Verifiers)
_sym_db.RegisterMessage(Verifiers.ReviewerLgtmVerifier)
_sym_db.RegisterMessage(Verifiers.TreeStatusLgtmVerifier)
_sym_db.RegisterMessage(Verifiers.TryJobVerifier)
_sym_db.RegisterMessage(Verifiers.TryJobVerifier.Property)
_sym_db.RegisterMessage(Verifiers.TryJobVerifier.Builder)
_sym_db.RegisterMessage(Verifiers.TryJobVerifier.Bucket)
_sym_db.RegisterMessage(Verifiers.PresubmitCheckVerifier)
# @@protoc_insertion_point(module_scope)
third_party/google/__init__.py 0 → 100644
View file @ dc128319
__import__('pkg_resources').declare_namespace(__name__)
third_party/google/protobuf/compiler/plugin_pb2.py 0 → 100644
View file @ dc128319
# Generated by the protocol buffer compiler. DO NOT EDIT!
# source: google/protobuf/compiler/plugin.proto
import sys
_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
from google.protobuf import descriptor_pb2
# @@protoc_insertion_point(imports)
_sym_db = _symbol_database.Default()
import google.protobuf.descriptor_pb2
DESCRIPTOR = _descriptor.FileDescriptor(
name='google/protobuf/compiler/plugin.proto',
package='google.protobuf.compiler',
serialized_pb=_b('\n%google/protobuf/compiler/plugin.proto\x12\x18google.protobuf.compiler\x1a google/protobuf/descriptor.proto\"}\n\x14\x43odeGeneratorRequest\x12\x18\n\x10\x66ile_to_generate\x18\x01 \x03(\t\x12\x11\n\tparameter\x18\x02 \x01(\t\x12\x38\n\nproto_file\x18\x0f \x03(\x0b\x32$.google.protobuf.FileDescriptorProto\"\xaa\x01\n\x15\x43odeGeneratorResponse\x12\r\n\x05\x65rror\x18\x01 \x01(\t\x12\x42\n\x04\x66ile\x18\x0f \x03(\x0b\x32\x34.google.protobuf.compiler.CodeGeneratorResponse.File\x1a>\n\x04\x46ile\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\x17\n\x0finsertion_point\x18\x02 \x01(\t\x12\x0f\n\x07\x63ontent\x18\x0f \x01(\tB,\n\x1c\x63om.google.protobuf.compilerB\x0cPluginProtos')
,
dependencies=[google.protobuf.descriptor_pb2.DESCRIPTOR,])
_sym_db.RegisterFileDescriptor(DESCRIPTOR)
_CODEGENERATORREQUEST = _descriptor.Descriptor(
name='CodeGeneratorRequest',
full_name='google.protobuf.compiler.CodeGeneratorRequest',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='file_to_generate', full_name='google.protobuf.compiler.CodeGeneratorRequest.file_to_generate', index=0,
number=1, type=9, cpp_type=9, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='parameter', full_name='google.protobuf.compiler.CodeGeneratorRequest.parameter', index=1,
number=2, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='proto_file', full_name='google.protobuf.compiler.CodeGeneratorRequest.proto_file', index=2,
number=15, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=101,
serialized_end=226,
)
_CODEGENERATORRESPONSE_FILE = _descriptor.Descriptor(
name='File',
full_name='google.protobuf.compiler.CodeGeneratorResponse.File',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='google.protobuf.compiler.CodeGeneratorResponse.File.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='insertion_point', full_name='google.protobuf.compiler.CodeGeneratorResponse.File.insertion_point', index=1,
number=2, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='content', full_name='google.protobuf.compiler.CodeGeneratorResponse.File.content', index=2,
number=15, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=337,
serialized_end=399,
)
_CODEGENERATORRESPONSE = _descriptor.Descriptor(
name='CodeGeneratorResponse',
full_name='google.protobuf.compiler.CodeGeneratorResponse',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='error', full_name='google.protobuf.compiler.CodeGeneratorResponse.error', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='file', full_name='google.protobuf.compiler.CodeGeneratorResponse.file', index=1,
number=15, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[_CODEGENERATORRESPONSE_FILE, ],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=229,
serialized_end=399,
)
_CODEGENERATORREQUEST.fields_by_name['proto_file'].message_type = google.protobuf.descriptor_pb2._FILEDESCRIPTORPROTO
_CODEGENERATORRESPONSE_FILE.containing_type = _CODEGENERATORRESPONSE
_CODEGENERATORRESPONSE.fields_by_name['file'].message_type = _CODEGENERATORRESPONSE_FILE
DESCRIPTOR.message_types_by_name['CodeGeneratorRequest'] = _CODEGENERATORREQUEST
DESCRIPTOR.message_types_by_name['CodeGeneratorResponse'] = _CODEGENERATORRESPONSE
CodeGeneratorRequest = _reflection.GeneratedProtocolMessageType('CodeGeneratorRequest', (_message.Message,), dict(
DESCRIPTOR = _CODEGENERATORREQUEST,
__module__ = 'google.protobuf.compiler.plugin_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.compiler.CodeGeneratorRequest)
))
_sym_db.RegisterMessage(CodeGeneratorRequest)
CodeGeneratorResponse = _reflection.GeneratedProtocolMessageType('CodeGeneratorResponse', (_message.Message,), dict(
File = _reflection.GeneratedProtocolMessageType('File', (_message.Message,), dict(
DESCRIPTOR = _CODEGENERATORRESPONSE_FILE,
__module__ = 'google.protobuf.compiler.plugin_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.compiler.CodeGeneratorResponse.File)
))
,
DESCRIPTOR = _CODEGENERATORRESPONSE,
__module__ = 'google.protobuf.compiler.plugin_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.compiler.CodeGeneratorResponse)
))
_sym_db.RegisterMessage(CodeGeneratorResponse)
_sym_db.RegisterMessage(CodeGeneratorResponse.File)
DESCRIPTOR.has_options = True
DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\034com.google.protobuf.compilerB\014PluginProtos'))
# @@protoc_insertion_point(module_scope)
third_party/google/protobuf/descriptor.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
# Needs to stay compatible with Python 2.5 due to GAE.
#
# Copyright 2007 Google Inc. All Rights Reserved.
"""Descriptors essentially contain exactly the information found in a .proto
file, in types that make this information accessible in Python.
"""
__author__ = 'robinson@google.com (Will Robinson)'
from google.protobuf.internal import api_implementation
if api_implementation.Type() == 'cpp':
# Used by MakeDescriptor in cpp mode
import os
import uuid
if api_implementation.Version() == 2:
from google.protobuf.pyext import _message
else:
from google.protobuf.internal import cpp_message
class Error(Exception):
"""Base error for this module."""
class TypeTransformationError(Error):
"""Error transforming between python proto type and corresponding C++ type."""
class DescriptorBase(object):
"""Descriptors base class.
This class is the base of all descriptor classes. It provides common options
related functionaility.
Attributes:
has_options: True if the descriptor has non-default options. Usually it
is not necessary to read this -- just call GetOptions() which will
happily return the default instance. However, it's sometimes useful
for efficiency, and also useful inside the protobuf implementation to
avoid some bootstrapping issues.
"""
def __init__(self, options, options_class_name):
"""Initialize the descriptor given its options message and the name of the
class of the options message. The name of the class is required in case
the options message is None and has to be created.
"""
self._options = options
self._options_class_name = options_class_name
# Does this descriptor have non-default options?
self.has_options = options is not None
def _SetOptions(self, options, options_class_name):
"""Sets the descriptor's options
This function is used in generated proto2 files to update descriptor
options. It must not be used outside proto2.
"""
self._options = options
self._options_class_name = options_class_name
# Does this descriptor have non-default options?
self.has_options = options is not None
def GetOptions(self):
"""Retrieves descriptor options.
This method returns the options set or creates the default options for the
descriptor.
"""
if self._options:
return self._options
from google.protobuf import descriptor_pb2
try:
options_class = getattr(descriptor_pb2, self._options_class_name)
except AttributeError:
raise RuntimeError('Unknown options class name %s!' %
(self._options_class_name))
self._options = options_class()
return self._options
class _NestedDescriptorBase(DescriptorBase):
"""Common class for descriptors that can be nested."""
def __init__(self, options, options_class_name, name, full_name,
file, containing_type, serialized_start=None,
serialized_end=None):
"""Constructor.
Args:
options: Protocol message options or None
to use default message options.
options_class_name: (str) The class name of the above options.
name: (str) Name of this protocol message type.
full_name: (str) Fully-qualified name of this protocol message type,
which will include protocol "package" name and the name of any
enclosing types.
file: (FileDescriptor) Reference to file info.
containing_type: if provided, this is a nested descriptor, with this
descriptor as parent, otherwise None.
serialized_start: The start index (inclusive) in block in the
file.serialized_pb that describes this descriptor.
serialized_end: The end index (exclusive) in block in the
file.serialized_pb that describes this descriptor.
"""
super(_NestedDescriptorBase, self).__init__(
options, options_class_name)
self.name = name
# TODO(falk): Add function to calculate full_name instead of having it in
# memory?
self.full_name = full_name
self.file = file
self.containing_type = containing_type
self._serialized_start = serialized_start
self._serialized_end = serialized_end
def GetTopLevelContainingType(self):
"""Returns the root if this is a nested type, or itself if its the root."""
desc = self
while desc.containing_type is not None:
desc = desc.containing_type
return desc
def CopyToProto(self, proto):
"""Copies this to the matching proto in descriptor_pb2.
Args:
proto: An empty proto instance from descriptor_pb2.
Raises:
Error: If self couldnt be serialized, due to to few constructor arguments.
"""
if (self.file is not None and
self._serialized_start is not None and
self._serialized_end is not None):
proto.ParseFromString(self.file.serialized_pb[
self._serialized_start:self._serialized_end])
else:
raise Error('Descriptor does not contain serialization.')
class Descriptor(_NestedDescriptorBase):
"""Descriptor for a protocol message type.
A Descriptor instance has the following attributes:
name: (str) Name of this protocol message type.
full_name: (str) Fully-qualified name of this protocol message type,
which will include protocol "package" name and the name of any
enclosing types.
containing_type: (Descriptor) Reference to the descriptor of the
type containing us, or None if this is top-level.
fields: (list of FieldDescriptors) Field descriptors for all
fields in this type.
fields_by_number: (dict int -> FieldDescriptor) Same FieldDescriptor
objects as in |fields|, but indexed by "number" attribute in each
FieldDescriptor.
fields_by_name: (dict str -> FieldDescriptor) Same FieldDescriptor
objects as in |fields|, but indexed by "name" attribute in each
FieldDescriptor.
nested_types: (list of Descriptors) Descriptor references
for all protocol message types nested within this one.
nested_types_by_name: (dict str -> Descriptor) Same Descriptor
objects as in |nested_types|, but indexed by "name" attribute
in each Descriptor.
enum_types: (list of EnumDescriptors) EnumDescriptor references
for all enums contained within this type.
enum_types_by_name: (dict str ->EnumDescriptor) Same EnumDescriptor
objects as in |enum_types|, but indexed by "name" attribute
in each EnumDescriptor.
enum_values_by_name: (dict str -> EnumValueDescriptor) Dict mapping
from enum value name to EnumValueDescriptor for that value.
extensions: (list of FieldDescriptor) All extensions defined directly
within this message type (NOT within a nested type).
extensions_by_name: (dict, string -> FieldDescriptor) Same FieldDescriptor
objects as |extensions|, but indexed by "name" attribute of each
FieldDescriptor.
is_extendable: Does this type define any extension ranges?
options: (descriptor_pb2.MessageOptions) Protocol message options or None
to use default message options.
oneofs: (list of OneofDescriptor) The list of descriptors for oneof fields
in this message.
oneofs_by_name: (dict str -> OneofDescriptor) Same objects as in |oneofs|,
but indexed by "name" attribute.
file: (FileDescriptor) Reference to file descriptor.
"""
# NOTE(tmarek): The file argument redefining a builtin is nothing we can
# fix right now since we don't know how many clients already rely on the
# name of the argument.
def __init__(self, name, full_name, filename, containing_type, fields,
nested_types, enum_types, extensions, options=None,
is_extendable=True, extension_ranges=None, oneofs=None,
file=None, serialized_start=None, serialized_end=None): # pylint:disable=redefined-builtin
"""Arguments to __init__() are as described in the description
of Descriptor fields above.
Note that filename is an obsolete argument, that is not used anymore.
Please use file.name to access this as an attribute.
"""
super(Descriptor, self).__init__(
options, 'MessageOptions', name, full_name, file,
containing_type, serialized_start=serialized_start,
serialized_end=serialized_end)
# We have fields in addition to fields_by_name and fields_by_number,
# so that:
# 1. Clients can index fields by "order in which they're listed."
# 2. Clients can easily iterate over all fields with the terse
# syntax: for f in descriptor.fields: ...
self.fields = fields
for field in self.fields:
field.containing_type = self
self.fields_by_number = dict((f.number, f) for f in fields)
self.fields_by_name = dict((f.name, f) for f in fields)
self.nested_types = nested_types
for nested_type in nested_types:
nested_type.containing_type = self
self.nested_types_by_name = dict((t.name, t) for t in nested_types)
self.enum_types = enum_types
for enum_type in self.enum_types:
enum_type.containing_type = self
self.enum_types_by_name = dict((t.name, t) for t in enum_types)
self.enum_values_by_name = dict(
(v.name, v) for t in enum_types for v in t.values)
self.extensions = extensions
for extension in self.extensions:
extension.extension_scope = self
self.extensions_by_name = dict((f.name, f) for f in extensions)
self.is_extendable = is_extendable
self.extension_ranges = extension_ranges
self.oneofs = oneofs if oneofs is not None else []
self.oneofs_by_name = dict((o.name, o) for o in self.oneofs)
for oneof in self.oneofs:
oneof.containing_type = self
def EnumValueName(self, enum, value):
"""Returns the string name of an enum value.
This is just a small helper method to simplify a common operation.
Args:
enum: string name of the Enum.
value: int, value of the enum.
Returns:
string name of the enum value.
Raises:
KeyError if either the Enum doesn't exist or the value is not a valid
value for the enum.
"""
return self.enum_types_by_name[enum].values_by_number[value].name
def CopyToProto(self, proto):
"""Copies this to a descriptor_pb2.DescriptorProto.
Args:
proto: An empty descriptor_pb2.DescriptorProto.
"""
# This function is overriden to give a better doc comment.
super(Descriptor, self).CopyToProto(proto)
# TODO(robinson): We should have aggressive checking here,
# for example:
# * If you specify a repeated field, you should not be allowed
# to specify a default value.
# * [Other examples here as needed].
#
# TODO(robinson): for this and other *Descriptor classes, we
# might also want to lock things down aggressively (e.g.,
# prevent clients from setting the attributes). Having
# stronger invariants here in general will reduce the number
# of runtime checks we must do in reflection.py...
class FieldDescriptor(DescriptorBase):
"""Descriptor for a single field in a .proto file.
A FieldDescriptor instance has the following attributes:
name: (str) Name of this field, exactly as it appears in .proto.
full_name: (str) Name of this field, including containing scope. This is
particularly relevant for extensions.
index: (int) Dense, 0-indexed index giving the order that this
field textually appears within its message in the .proto file.
number: (int) Tag number declared for this field in the .proto file.
type: (One of the TYPE_* constants below) Declared type.
cpp_type: (One of the CPPTYPE_* constants below) C++ type used to
represent this field.
label: (One of the LABEL_* constants below) Tells whether this
field is optional, required, or repeated.
has_default_value: (bool) True if this field has a default value defined,
otherwise false.
default_value: (Varies) Default value of this field. Only
meaningful for non-repeated scalar fields. Repeated fields
should always set this to [], and non-repeated composite
fields should always set this to None.
containing_type: (Descriptor) Descriptor of the protocol message
type that contains this field. Set by the Descriptor constructor
if we're passed into one.
Somewhat confusingly, for extension fields, this is the
descriptor of the EXTENDED message, not the descriptor
of the message containing this field. (See is_extension and
extension_scope below).
message_type: (Descriptor) If a composite field, a descriptor
of the message type contained in this field. Otherwise, this is None.
enum_type: (EnumDescriptor) If this field contains an enum, a
descriptor of that enum. Otherwise, this is None.
is_extension: True iff this describes an extension field.
extension_scope: (Descriptor) Only meaningful if is_extension is True.
Gives the message that immediately contains this extension field.
Will be None iff we're a top-level (file-level) extension field.
options: (descriptor_pb2.FieldOptions) Protocol message field options or
None to use default field options.
containing_oneof: (OneofDescriptor) If the field is a member of a oneof
union, contains its descriptor. Otherwise, None.
"""
# Must be consistent with C++ FieldDescriptor::Type enum in
# descriptor.h.
#
# TODO(robinson): Find a way to eliminate this repetition.
TYPE_DOUBLE = 1
TYPE_FLOAT = 2
TYPE_INT64 = 3
TYPE_UINT64 = 4
TYPE_INT32 = 5
TYPE_FIXED64 = 6
TYPE_FIXED32 = 7
TYPE_BOOL = 8
TYPE_STRING = 9
TYPE_GROUP = 10
TYPE_MESSAGE = 11
TYPE_BYTES = 12
TYPE_UINT32 = 13
TYPE_ENUM = 14
TYPE_SFIXED32 = 15
TYPE_SFIXED64 = 16
TYPE_SINT32 = 17
TYPE_SINT64 = 18
MAX_TYPE = 18
# Must be consistent with C++ FieldDescriptor::CppType enum in
# descriptor.h.
#
# TODO(robinson): Find a way to eliminate this repetition.
CPPTYPE_INT32 = 1
CPPTYPE_INT64 = 2
CPPTYPE_UINT32 = 3
CPPTYPE_UINT64 = 4
CPPTYPE_DOUBLE = 5
CPPTYPE_FLOAT = 6
CPPTYPE_BOOL = 7
CPPTYPE_ENUM = 8
CPPTYPE_STRING = 9
CPPTYPE_MESSAGE = 10
MAX_CPPTYPE = 10
_PYTHON_TO_CPP_PROTO_TYPE_MAP = {
TYPE_DOUBLE: CPPTYPE_DOUBLE,
TYPE_FLOAT: CPPTYPE_FLOAT,
TYPE_ENUM: CPPTYPE_ENUM,
TYPE_INT64: CPPTYPE_INT64,
TYPE_SINT64: CPPTYPE_INT64,
TYPE_SFIXED64: CPPTYPE_INT64,
TYPE_UINT64: CPPTYPE_UINT64,
TYPE_FIXED64: CPPTYPE_UINT64,
TYPE_INT32: CPPTYPE_INT32,
TYPE_SFIXED32: CPPTYPE_INT32,
TYPE_SINT32: CPPTYPE_INT32,
TYPE_UINT32: CPPTYPE_UINT32,
TYPE_FIXED32: CPPTYPE_UINT32,
TYPE_BYTES: CPPTYPE_STRING,
TYPE_STRING: CPPTYPE_STRING,
TYPE_BOOL: CPPTYPE_BOOL,
TYPE_MESSAGE: CPPTYPE_MESSAGE,
TYPE_GROUP: CPPTYPE_MESSAGE
}
# Must be consistent with C++ FieldDescriptor::Label enum in
# descriptor.h.
#
# TODO(robinson): Find a way to eliminate this repetition.
LABEL_OPTIONAL = 1
LABEL_REQUIRED = 2
LABEL_REPEATED = 3
MAX_LABEL = 3
# Must be consistent with C++ constants kMaxNumber, kFirstReservedNumber,
# and kLastReservedNumber in descriptor.h
MAX_FIELD_NUMBER = (1 << 29) - 1
FIRST_RESERVED_FIELD_NUMBER = 19000
LAST_RESERVED_FIELD_NUMBER = 19999
def __init__(self, name, full_name, index, number, type, cpp_type, label,
default_value, message_type, enum_type, containing_type,
is_extension, extension_scope, options=None,
has_default_value=True, containing_oneof=None):
"""The arguments are as described in the description of FieldDescriptor
attributes above.
Note that containing_type may be None, and may be set later if necessary
(to deal with circular references between message types, for example).
Likewise for extension_scope.
"""
super(FieldDescriptor, self).__init__(options, 'FieldOptions')
self.name = name
self.full_name = full_name
self.index = index
self.number = number
self.type = type
self.cpp_type = cpp_type
self.label = label
self.has_default_value = has_default_value
self.default_value = default_value
self.containing_type = containing_type
self.message_type = message_type
self.enum_type = enum_type
self.is_extension = is_extension
self.extension_scope = extension_scope
self.containing_oneof = containing_oneof
if api_implementation.Type() == 'cpp':
if is_extension:
if api_implementation.Version() == 2:
# pylint: disable=protected-access
self._cdescriptor = (
_message.Message._GetExtensionDescriptor(full_name))
# pylint: enable=protected-access
else:
self._cdescriptor = cpp_message.GetExtensionDescriptor(full_name)
else:
if api_implementation.Version() == 2:
# pylint: disable=protected-access
self._cdescriptor = _message.Message._GetFieldDescriptor(full_name)
# pylint: enable=protected-access
else:
self._cdescriptor = cpp_message.GetFieldDescriptor(full_name)
else:
self._cdescriptor = None
@staticmethod
def ProtoTypeToCppProtoType(proto_type):
"""Converts from a Python proto type to a C++ Proto Type.
The Python ProtocolBuffer classes specify both the 'Python' datatype and the
'C++' datatype - and they're not the same. This helper method should
translate from one to another.
Args:
proto_type: the Python proto type (descriptor.FieldDescriptor.TYPE_*)
Returns:
descriptor.FieldDescriptor.CPPTYPE_*, the C++ type.
Raises:
TypeTransformationError: when the Python proto type isn't known.
"""
try:
return FieldDescriptor._PYTHON_TO_CPP_PROTO_TYPE_MAP[proto_type]
except KeyError:
raise TypeTransformationError('Unknown proto_type: %s' % proto_type)
class EnumDescriptor(_NestedDescriptorBase):
"""Descriptor for an enum defined in a .proto file.
An EnumDescriptor instance has the following attributes:
name: (str) Name of the enum type.
full_name: (str) Full name of the type, including package name
and any enclosing type(s).
values: (list of EnumValueDescriptors) List of the values
in this enum.
values_by_name: (dict str -> EnumValueDescriptor) Same as |values|,
but indexed by the "name" field of each EnumValueDescriptor.
values_by_number: (dict int -> EnumValueDescriptor) Same as |values|,
but indexed by the "number" field of each EnumValueDescriptor.
containing_type: (Descriptor) Descriptor of the immediate containing
type of this enum, or None if this is an enum defined at the
top level in a .proto file. Set by Descriptor's constructor
if we're passed into one.
file: (FileDescriptor) Reference to file descriptor.
options: (descriptor_pb2.EnumOptions) Enum options message or
None to use default enum options.
"""
def __init__(self, name, full_name, filename, values,
containing_type=None, options=None, file=None,
serialized_start=None, serialized_end=None):
"""Arguments are as described in the attribute description above.
Note that filename is an obsolete argument, that is not used anymore.
Please use file.name to access this as an attribute.
"""
super(EnumDescriptor, self).__init__(
options, 'EnumOptions', name, full_name, file,
containing_type, serialized_start=serialized_start,
serialized_end=serialized_end)
self.values = values
for value in self.values:
value.type = self
self.values_by_name = dict((v.name, v) for v in values)
self.values_by_number = dict((v.number, v) for v in values)
def CopyToProto(self, proto):
"""Copies this to a descriptor_pb2.EnumDescriptorProto.
Args:
proto: An empty descriptor_pb2.EnumDescriptorProto.
"""
# This function is overriden to give a better doc comment.
super(EnumDescriptor, self).CopyToProto(proto)
class EnumValueDescriptor(DescriptorBase):
"""Descriptor for a single value within an enum.
name: (str) Name of this value.
index: (int) Dense, 0-indexed index giving the order that this
value appears textually within its enum in the .proto file.
number: (int) Actual number assigned to this enum value.
type: (EnumDescriptor) EnumDescriptor to which this value
belongs. Set by EnumDescriptor's constructor if we're
passed into one.
options: (descriptor_pb2.EnumValueOptions) Enum value options message or
None to use default enum value options options.
"""
def __init__(self, name, index, number, type=None, options=None):
"""Arguments are as described in the attribute description above."""
super(EnumValueDescriptor, self).__init__(options, 'EnumValueOptions')
self.name = name
self.index = index
self.number = number
self.type = type
class OneofDescriptor(object):
"""Descriptor for a oneof field.
name: (str) Name of the oneof field.
full_name: (str) Full name of the oneof field, including package name.
index: (int) 0-based index giving the order of the oneof field inside
its containing type.
containing_type: (Descriptor) Descriptor of the protocol message
type that contains this field. Set by the Descriptor constructor
if we're passed into one.
fields: (list of FieldDescriptor) The list of field descriptors this
oneof can contain.
"""
def __init__(self, name, full_name, index, containing_type, fields):
"""Arguments are as described in the attribute description above."""
self.name = name
self.full_name = full_name
self.index = index
self.containing_type = containing_type
self.fields = fields
class ServiceDescriptor(_NestedDescriptorBase):
"""Descriptor for a service.
name: (str) Name of the service.
full_name: (str) Full name of the service, including package name.
index: (int) 0-indexed index giving the order that this services
definition appears withing the .proto file.
methods: (list of MethodDescriptor) List of methods provided by this
service.
options: (descriptor_pb2.ServiceOptions) Service options message or
None to use default service options.
file: (FileDescriptor) Reference to file info.
"""
def __init__(self, name, full_name, index, methods, options=None, file=None,
serialized_start=None, serialized_end=None):
super(ServiceDescriptor, self).__init__(
options, 'ServiceOptions', name, full_name, file,
None, serialized_start=serialized_start,
serialized_end=serialized_end)
self.index = index
self.methods = methods
# Set the containing service for each method in this service.
for method in self.methods:
method.containing_service = self
def FindMethodByName(self, name):
"""Searches for the specified method, and returns its descriptor."""
for method in self.methods:
if name == method.name:
return method
return None
def CopyToProto(self, proto):
"""Copies this to a descriptor_pb2.ServiceDescriptorProto.
Args:
proto: An empty descriptor_pb2.ServiceDescriptorProto.
"""
# This function is overriden to give a better doc comment.
super(ServiceDescriptor, self).CopyToProto(proto)
class MethodDescriptor(DescriptorBase):
"""Descriptor for a method in a service.
name: (str) Name of the method within the service.
full_name: (str) Full name of method.
index: (int) 0-indexed index of the method inside the service.
containing_service: (ServiceDescriptor) The service that contains this
method.
input_type: The descriptor of the message that this method accepts.
output_type: The descriptor of the message that this method returns.
options: (descriptor_pb2.MethodOptions) Method options message or
None to use default method options.
"""
def __init__(self, name, full_name, index, containing_service,
input_type, output_type, options=None):
"""The arguments are as described in the description of MethodDescriptor
attributes above.
Note that containing_service may be None, and may be set later if necessary.
"""
super(MethodDescriptor, self).__init__(options, 'MethodOptions')
self.name = name
self.full_name = full_name
self.index = index
self.containing_service = containing_service
self.input_type = input_type
self.output_type = output_type
class FileDescriptor(DescriptorBase):
"""Descriptor for a file. Mimics the descriptor_pb2.FileDescriptorProto.
Note that enum_types_by_name, extensions_by_name, and dependencies
fields are only set by the message_factory module, and not by the
generated proto code.
name: name of file, relative to root of source tree.
package: name of the package
serialized_pb: (str) Byte string of serialized
descriptor_pb2.FileDescriptorProto.
dependencies: List of other FileDescriptors this FileDescriptor depends on.
message_types_by_name: Dict of message names of their descriptors.
enum_types_by_name: Dict of enum names and their descriptors.
extensions_by_name: Dict of extension names and their descriptors.
"""
def __init__(self, name, package, options=None, serialized_pb=None,
dependencies=None):
"""Constructor."""
super(FileDescriptor, self).__init__(options, 'FileOptions')
self.message_types_by_name = {}
self.name = name
self.package = package
self.serialized_pb = serialized_pb
self.enum_types_by_name = {}
self.extensions_by_name = {}
self.dependencies = (dependencies or [])
if (api_implementation.Type() == 'cpp' and
self.serialized_pb is not None):
if api_implementation.Version() == 2:
# pylint: disable=protected-access
_message.Message._BuildFile(self.serialized_pb)
# pylint: enable=protected-access
else:
cpp_message.BuildFile(self.serialized_pb)
def CopyToProto(self, proto):
"""Copies this to a descriptor_pb2.FileDescriptorProto.
Args:
proto: An empty descriptor_pb2.FileDescriptorProto.
"""
proto.ParseFromString(self.serialized_pb)
def _ParseOptions(message, string):
"""Parses serialized options.
This helper function is used to parse serialized options in generated
proto2 files. It must not be used outside proto2.
"""
message.ParseFromString(string)
return message
def MakeDescriptor(desc_proto, package='', build_file_if_cpp=True):
"""Make a protobuf Descriptor given a DescriptorProto protobuf.
Handles nested descriptors. Note that this is limited to the scope of defining
a message inside of another message. Composite fields can currently only be
resolved if the message is defined in the same scope as the field.
Args:
desc_proto: The descriptor_pb2.DescriptorProto protobuf message.
package: Optional package name for the new message Descriptor (string).
build_file_if_cpp: Update the C++ descriptor pool if api matches.
Set to False on recursion, so no duplicates are created.
Returns:
A Descriptor for protobuf messages.
"""
if api_implementation.Type() == 'cpp' and build_file_if_cpp:
# The C++ implementation requires all descriptors to be backed by the same
# definition in the C++ descriptor pool. To do this, we build a
# FileDescriptorProto with the same definition as this descriptor and build
# it into the pool.
from google.protobuf import descriptor_pb2
file_descriptor_proto = descriptor_pb2.FileDescriptorProto()
file_descriptor_proto.message_type.add().MergeFrom(desc_proto)
# Generate a random name for this proto file to prevent conflicts with
# any imported ones. We need to specify a file name so BuildFile accepts
# our FileDescriptorProto, but it is not important what that file name
# is actually set to.
proto_name = str(uuid.uuid4())
if package:
file_descriptor_proto.name = os.path.join(package.replace('.', '/'),
proto_name + '.proto')
file_descriptor_proto.package = package
else:
file_descriptor_proto.name = proto_name + '.proto'
if api_implementation.Version() == 2:
# pylint: disable=protected-access
_message.Message._BuildFile(file_descriptor_proto.SerializeToString())
# pylint: enable=protected-access
else:
cpp_message.BuildFile(file_descriptor_proto.SerializeToString())
full_message_name = [desc_proto.name]
if package: full_message_name.insert(0, package)
# Create Descriptors for enum types
enum_types = {}
for enum_proto in desc_proto.enum_type:
full_name = '.'.join(full_message_name + [enum_proto.name])
enum_desc = EnumDescriptor(
enum_proto.name, full_name, None, [
EnumValueDescriptor(enum_val.name, ii, enum_val.number)
for ii, enum_val in enumerate(enum_proto.value)])
enum_types[full_name] = enum_desc
# Create Descriptors for nested types
nested_types = {}
for nested_proto in desc_proto.nested_type:
full_name = '.'.join(full_message_name + [nested_proto.name])
# Nested types are just those defined inside of the message, not all types
# used by fields in the message, so no loops are possible here.
nested_desc = MakeDescriptor(nested_proto,
package='.'.join(full_message_name),
build_file_if_cpp=False)
nested_types[full_name] = nested_desc
fields = []
for field_proto in desc_proto.field:
full_name = '.'.join(full_message_name + [field_proto.name])
enum_desc = None
nested_desc = None
if field_proto.HasField('type_name'):
type_name = field_proto.type_name
full_type_name = '.'.join(full_message_name +
[type_name[type_name.rfind('.')+1:]])
if full_type_name in nested_types:
nested_desc = nested_types[full_type_name]
elif full_type_name in enum_types:
enum_desc = enum_types[full_type_name]
# Else type_name references a non-local type, which isn't implemented
field = FieldDescriptor(
field_proto.name, full_name, field_proto.number - 1,
field_proto.number, field_proto.type,
FieldDescriptor.ProtoTypeToCppProtoType(field_proto.type),
field_proto.label, None, nested_desc, enum_desc, None, False, None,
has_default_value=False)
fields.append(field)
desc_name = '.'.join(full_message_name)
return Descriptor(desc_proto.name, desc_name, None, None, fields,
nested_types.values(), enum_types.values(), [])
third_party/google/protobuf/descriptor_database.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Provides a container for DescriptorProtos."""
__author__ = 'matthewtoia@google.com (Matt Toia)'
class Error(Exception):
pass
class DescriptorDatabaseConflictingDefinitionError(Error):
"""Raised when a proto is added with the same name & different descriptor."""
class DescriptorDatabase(object):
"""A container accepting FileDescriptorProtos and maps DescriptorProtos."""
def __init__(self):
self._file_desc_protos_by_file = {}
self._file_desc_protos_by_symbol = {}
def Add(self, file_desc_proto):
"""Adds the FileDescriptorProto and its types to this database.
Args:
file_desc_proto: The FileDescriptorProto to add.
Raises:
DescriptorDatabaseException: if an attempt is made to add a proto
with the same name but different definition than an exisiting
proto in the database.
"""
proto_name = file_desc_proto.name
if proto_name not in self._file_desc_protos_by_file:
self._file_desc_protos_by_file[proto_name] = file_desc_proto
elif self._file_desc_protos_by_file[proto_name] != file_desc_proto:
raise DescriptorDatabaseConflictingDefinitionError(
'%s already added, but with different descriptor.' % proto_name)
package = file_desc_proto.package
for message in file_desc_proto.message_type:
self._file_desc_protos_by_symbol.update(
(name, file_desc_proto) for name in _ExtractSymbols(message, package))
for enum in file_desc_proto.enum_type:
self._file_desc_protos_by_symbol[
'.'.join((package, enum.name))] = file_desc_proto
def FindFileByName(self, name):
"""Finds the file descriptor proto by file name.
Typically the file name is a relative path ending to a .proto file. The
proto with the given name will have to have been added to this database
using the Add method or else an error will be raised.
Args:
name: The file name to find.
Returns:
The file descriptor proto matching the name.
Raises:
KeyError if no file by the given name was added.
"""
return self._file_desc_protos_by_file[name]
def FindFileContainingSymbol(self, symbol):
"""Finds the file descriptor proto containing the specified symbol.
The symbol should be a fully qualified name including the file descriptor's
package and any containing messages. Some examples:
'some.package.name.Message'
'some.package.name.Message.NestedEnum'
The file descriptor proto containing the specified symbol must be added to
this database using the Add method or else an error will be raised.
Args:
symbol: The fully qualified symbol name.
Returns:
The file descriptor proto containing the symbol.
Raises:
KeyError if no file contains the specified symbol.
"""
return self._file_desc_protos_by_symbol[symbol]
def _ExtractSymbols(desc_proto, package):
"""Pulls out all the symbols from a descriptor proto.
Args:
desc_proto: The proto to extract symbols from.
package: The package containing the descriptor type.
Yields:
The fully qualified name found in the descriptor.
"""
message_name = '.'.join((package, desc_proto.name))
yield message_name
for nested_type in desc_proto.nested_type:
for symbol in _ExtractSymbols(nested_type, message_name):
yield symbol
for enum_type in desc_proto.enum_type:
yield '.'.join((message_name, enum_type.name))
third_party/google/protobuf/descriptor_pb2.py 0 → 100644
View file @ dc128319
# Generated by the protocol buffer compiler. DO NOT EDIT!
# source: google/protobuf/descriptor.proto
import sys
_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
# @@protoc_insertion_point(imports)
_sym_db = _symbol_database.Default()
DESCRIPTOR = _descriptor.FileDescriptor(
name='google/protobuf/descriptor.proto',
package='google.protobuf',
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extensions=[
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nested_types=[],
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_FIELDDESCRIPTORPROTO_LABEL,
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full_name='google.protobuf.OneofDescriptorProto',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
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has_default_value=False, default_value=_b("").decode('utf-8'),
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_ENUMDESCRIPTORPROTO = _descriptor.Descriptor(
name='EnumDescriptorProto',
full_name='google.protobuf.EnumDescriptorProto',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
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number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
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number=3, type=11, cpp_type=10, label=1,
has_default_value=False, default_value=None,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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extensions=[
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nested_types=[],
enum_types=[
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options=None,
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extension_ranges=[],
oneofs=[
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serialized_start=1798,
serialized_end=1938,
)
_ENUMVALUEDESCRIPTORPROTO = _descriptor.Descriptor(
name='EnumValueDescriptorProto',
full_name='google.protobuf.EnumValueDescriptorProto',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='google.protobuf.EnumValueDescriptorProto.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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name='number', full_name='google.protobuf.EnumValueDescriptorProto.number', index=1,
number=2, type=5, cpp_type=1, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
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number=3, type=11, cpp_type=10, label=1,
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options=None),
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extensions=[
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options=None,
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oneofs=[
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)
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name='ServiceDescriptorProto',
full_name='google.protobuf.ServiceDescriptorProto',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='google.protobuf.ServiceDescriptorProto.name', index=0,
number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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name='method', full_name='google.protobuf.ServiceDescriptorProto.method', index=1,
number=2, type=11, cpp_type=10, label=3,
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options=None),
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number=3, type=11, cpp_type=10, label=1,
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options=None),
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extensions=[
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options=None,
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name='MethodDescriptorProto',
full_name='google.protobuf.MethodDescriptorProto',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
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number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
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options=None),
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extensions=[
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_FILEOPTIONS = _descriptor.Descriptor(
name='FileOptions',
full_name='google.protobuf.FileOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
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number=1, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
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message_type=None, enum_type=None, containing_type=None,
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options=None),
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message_type=None, enum_type=None, containing_type=None,
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options=None),
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message_type=None, enum_type=None, containing_type=None,
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options=None),
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has_default_value=True, default_value=1,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=11, type=9, cpp_type=9, label=1,
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message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=16, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=17, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=18, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=23, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
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],
options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
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serialized_start=2327,
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_MESSAGEOPTIONS = _descriptor.Descriptor(
name='MessageOptions',
full_name='google.protobuf.MessageOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='message_set_wire_format', full_name='google.protobuf.MessageOptions.message_set_wire_format', index=0,
number=1, type=8, cpp_type=7, label=1,
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message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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message_type=None, enum_type=None, containing_type=None,
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options=None),
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number=999, type=11, cpp_type=10, label=3,
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message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
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extensions=[
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options=None,
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extension_ranges=[(1000, 536870912), ],
oneofs=[
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_FIELDOPTIONS = _descriptor.Descriptor(
name='FieldOptions',
full_name='google.protobuf.FieldOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
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name='ctype', full_name='google.protobuf.FieldOptions.ctype', index=0,
number=1, type=14, cpp_type=8, label=1,
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message_type=None, enum_type=None, containing_type=None,
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message_type=None, enum_type=None, containing_type=None,
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number=5, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
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options=None),
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number=3, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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name='experimental_map_key', full_name='google.protobuf.FieldOptions.experimental_map_key', index=4,
number=9, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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name='weak', full_name='google.protobuf.FieldOptions.weak', index=5,
number=10, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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name='uninterpreted_option', full_name='google.protobuf.FieldOptions.uninterpreted_option', index=6,
number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
_FIELDOPTIONS_CTYPE,
],
options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
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_ENUMOPTIONS = _descriptor.Descriptor(
name='EnumOptions',
full_name='google.protobuf.EnumOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='allow_alias', full_name='google.protobuf.EnumOptions.allow_alias', index=0,
number=2, type=8, cpp_type=7, label=1,
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message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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number=3, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
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number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
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extensions=[
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nested_types=[],
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options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
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_ENUMVALUEOPTIONS = _descriptor.Descriptor(
name='EnumValueOptions',
full_name='google.protobuf.EnumValueOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='deprecated', full_name='google.protobuf.EnumValueOptions.deprecated', index=0,
number=1, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
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_descriptor.FieldDescriptor(
name='uninterpreted_option', full_name='google.protobuf.EnumValueOptions.uninterpreted_option', index=1,
number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
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extensions=[
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nested_types=[],
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options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
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_SERVICEOPTIONS = _descriptor.Descriptor(
name='ServiceOptions',
full_name='google.protobuf.ServiceOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='deprecated', full_name='google.protobuf.ServiceOptions.deprecated', index=0,
number=33, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='uninterpreted_option', full_name='google.protobuf.ServiceOptions.uninterpreted_option', index=1,
number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
],
serialized_start=3690,
serialized_end=3813,
)
_METHODOPTIONS = _descriptor.Descriptor(
name='MethodOptions',
full_name='google.protobuf.MethodOptions',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='deprecated', full_name='google.protobuf.MethodOptions.deprecated', index=0,
number=33, type=8, cpp_type=7, label=1,
has_default_value=True, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='uninterpreted_option', full_name='google.protobuf.MethodOptions.uninterpreted_option', index=1,
number=999, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=True,
extension_ranges=[(1000, 536870912), ],
oneofs=[
],
serialized_start=3815,
serialized_end=3937,
)
_UNINTERPRETEDOPTION_NAMEPART = _descriptor.Descriptor(
name='NamePart',
full_name='google.protobuf.UninterpretedOption.NamePart',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name_part', full_name='google.protobuf.UninterpretedOption.NamePart.name_part', index=0,
number=1, type=9, cpp_type=9, label=2,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='is_extension', full_name='google.protobuf.UninterpretedOption.NamePart.is_extension', index=1,
number=2, type=8, cpp_type=7, label=2,
has_default_value=False, default_value=False,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=4175,
serialized_end=4226,
)
_UNINTERPRETEDOPTION = _descriptor.Descriptor(
name='UninterpretedOption',
full_name='google.protobuf.UninterpretedOption',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='name', full_name='google.protobuf.UninterpretedOption.name', index=0,
number=2, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='identifier_value', full_name='google.protobuf.UninterpretedOption.identifier_value', index=1,
number=3, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='positive_int_value', full_name='google.protobuf.UninterpretedOption.positive_int_value', index=2,
number=4, type=4, cpp_type=4, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='negative_int_value', full_name='google.protobuf.UninterpretedOption.negative_int_value', index=3,
number=5, type=3, cpp_type=2, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='double_value', full_name='google.protobuf.UninterpretedOption.double_value', index=4,
number=6, type=1, cpp_type=5, label=1,
has_default_value=False, default_value=0,
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='string_value', full_name='google.protobuf.UninterpretedOption.string_value', index=5,
number=7, type=12, cpp_type=9, label=1,
has_default_value=False, default_value=_b(""),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='aggregate_value', full_name='google.protobuf.UninterpretedOption.aggregate_value', index=6,
number=8, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[_UNINTERPRETEDOPTION_NAMEPART, ],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=3940,
serialized_end=4226,
)
_SOURCECODEINFO_LOCATION = _descriptor.Descriptor(
name='Location',
full_name='google.protobuf.SourceCodeInfo.Location',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='path', full_name='google.protobuf.SourceCodeInfo.Location.path', index=0,
number=1, type=5, cpp_type=1, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='span', full_name='google.protobuf.SourceCodeInfo.Location.span', index=1,
number=2, type=5, cpp_type=1, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='leading_comments', full_name='google.protobuf.SourceCodeInfo.Location.leading_comments', index=2,
number=3, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
_descriptor.FieldDescriptor(
name='trailing_comments', full_name='google.protobuf.SourceCodeInfo.Location.trailing_comments', index=3,
number=4, type=9, cpp_type=9, label=1,
has_default_value=False, default_value=_b("").decode('utf-8'),
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=4307,
serialized_end=4406,
)
_SOURCECODEINFO = _descriptor.Descriptor(
name='SourceCodeInfo',
full_name='google.protobuf.SourceCodeInfo',
filename=None,
file=DESCRIPTOR,
containing_type=None,
fields=[
_descriptor.FieldDescriptor(
name='location', full_name='google.protobuf.SourceCodeInfo.location', index=0,
number=1, type=11, cpp_type=10, label=3,
has_default_value=False, default_value=[],
message_type=None, enum_type=None, containing_type=None,
is_extension=False, extension_scope=None,
options=None),
],
extensions=[
],
nested_types=[_SOURCECODEINFO_LOCATION, ],
enum_types=[
],
options=None,
is_extendable=False,
extension_ranges=[],
oneofs=[
],
serialized_start=4229,
serialized_end=4406,
)
_FILEDESCRIPTORSET.fields_by_name['file'].message_type = _FILEDESCRIPTORPROTO
_FILEDESCRIPTORPROTO.fields_by_name['message_type'].message_type = _DESCRIPTORPROTO
_FILEDESCRIPTORPROTO.fields_by_name['enum_type'].message_type = _ENUMDESCRIPTORPROTO
_FILEDESCRIPTORPROTO.fields_by_name['service'].message_type = _SERVICEDESCRIPTORPROTO
_FILEDESCRIPTORPROTO.fields_by_name['extension'].message_type = _FIELDDESCRIPTORPROTO
_FILEDESCRIPTORPROTO.fields_by_name['options'].message_type = _FILEOPTIONS
_FILEDESCRIPTORPROTO.fields_by_name['source_code_info'].message_type = _SOURCECODEINFO
_DESCRIPTORPROTO_EXTENSIONRANGE.containing_type = _DESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['field'].message_type = _FIELDDESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['extension'].message_type = _FIELDDESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['nested_type'].message_type = _DESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['enum_type'].message_type = _ENUMDESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['extension_range'].message_type = _DESCRIPTORPROTO_EXTENSIONRANGE
_DESCRIPTORPROTO.fields_by_name['oneof_decl'].message_type = _ONEOFDESCRIPTORPROTO
_DESCRIPTORPROTO.fields_by_name['options'].message_type = _MESSAGEOPTIONS
_FIELDDESCRIPTORPROTO.fields_by_name['label'].enum_type = _FIELDDESCRIPTORPROTO_LABEL
_FIELDDESCRIPTORPROTO.fields_by_name['type'].enum_type = _FIELDDESCRIPTORPROTO_TYPE
_FIELDDESCRIPTORPROTO.fields_by_name['options'].message_type = _FIELDOPTIONS
_FIELDDESCRIPTORPROTO_TYPE.containing_type = _FIELDDESCRIPTORPROTO
_FIELDDESCRIPTORPROTO_LABEL.containing_type = _FIELDDESCRIPTORPROTO
_ENUMDESCRIPTORPROTO.fields_by_name['value'].message_type = _ENUMVALUEDESCRIPTORPROTO
_ENUMDESCRIPTORPROTO.fields_by_name['options'].message_type = _ENUMOPTIONS
_ENUMVALUEDESCRIPTORPROTO.fields_by_name['options'].message_type = _ENUMVALUEOPTIONS
_SERVICEDESCRIPTORPROTO.fields_by_name['method'].message_type = _METHODDESCRIPTORPROTO
_SERVICEDESCRIPTORPROTO.fields_by_name['options'].message_type = _SERVICEOPTIONS
_METHODDESCRIPTORPROTO.fields_by_name['options'].message_type = _METHODOPTIONS
_FILEOPTIONS.fields_by_name['optimize_for'].enum_type = _FILEOPTIONS_OPTIMIZEMODE
_FILEOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_FILEOPTIONS_OPTIMIZEMODE.containing_type = _FILEOPTIONS
_MESSAGEOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_FIELDOPTIONS.fields_by_name['ctype'].enum_type = _FIELDOPTIONS_CTYPE
_FIELDOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_FIELDOPTIONS_CTYPE.containing_type = _FIELDOPTIONS
_ENUMOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_ENUMVALUEOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_SERVICEOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_METHODOPTIONS.fields_by_name['uninterpreted_option'].message_type = _UNINTERPRETEDOPTION
_UNINTERPRETEDOPTION_NAMEPART.containing_type = _UNINTERPRETEDOPTION
_UNINTERPRETEDOPTION.fields_by_name['name'].message_type = _UNINTERPRETEDOPTION_NAMEPART
_SOURCECODEINFO_LOCATION.containing_type = _SOURCECODEINFO
_SOURCECODEINFO.fields_by_name['location'].message_type = _SOURCECODEINFO_LOCATION
DESCRIPTOR.message_types_by_name['FileDescriptorSet'] = _FILEDESCRIPTORSET
DESCRIPTOR.message_types_by_name['FileDescriptorProto'] = _FILEDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['DescriptorProto'] = _DESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['FieldDescriptorProto'] = _FIELDDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['OneofDescriptorProto'] = _ONEOFDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['EnumDescriptorProto'] = _ENUMDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['EnumValueDescriptorProto'] = _ENUMVALUEDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['ServiceDescriptorProto'] = _SERVICEDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['MethodDescriptorProto'] = _METHODDESCRIPTORPROTO
DESCRIPTOR.message_types_by_name['FileOptions'] = _FILEOPTIONS
DESCRIPTOR.message_types_by_name['MessageOptions'] = _MESSAGEOPTIONS
DESCRIPTOR.message_types_by_name['FieldOptions'] = _FIELDOPTIONS
DESCRIPTOR.message_types_by_name['EnumOptions'] = _ENUMOPTIONS
DESCRIPTOR.message_types_by_name['EnumValueOptions'] = _ENUMVALUEOPTIONS
DESCRIPTOR.message_types_by_name['ServiceOptions'] = _SERVICEOPTIONS
DESCRIPTOR.message_types_by_name['MethodOptions'] = _METHODOPTIONS
DESCRIPTOR.message_types_by_name['UninterpretedOption'] = _UNINTERPRETEDOPTION
DESCRIPTOR.message_types_by_name['SourceCodeInfo'] = _SOURCECODEINFO
FileDescriptorSet = _reflection.GeneratedProtocolMessageType('FileDescriptorSet', (_message.Message,), dict(
DESCRIPTOR = _FILEDESCRIPTORSET,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.FileDescriptorSet)
))
_sym_db.RegisterMessage(FileDescriptorSet)
FileDescriptorProto = _reflection.GeneratedProtocolMessageType('FileDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _FILEDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.FileDescriptorProto)
))
_sym_db.RegisterMessage(FileDescriptorProto)
DescriptorProto = _reflection.GeneratedProtocolMessageType('DescriptorProto', (_message.Message,), dict(
ExtensionRange = _reflection.GeneratedProtocolMessageType('ExtensionRange', (_message.Message,), dict(
DESCRIPTOR = _DESCRIPTORPROTO_EXTENSIONRANGE,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.DescriptorProto.ExtensionRange)
))
,
DESCRIPTOR = _DESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.DescriptorProto)
))
_sym_db.RegisterMessage(DescriptorProto)
_sym_db.RegisterMessage(DescriptorProto.ExtensionRange)
FieldDescriptorProto = _reflection.GeneratedProtocolMessageType('FieldDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _FIELDDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.FieldDescriptorProto)
))
_sym_db.RegisterMessage(FieldDescriptorProto)
OneofDescriptorProto = _reflection.GeneratedProtocolMessageType('OneofDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _ONEOFDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.OneofDescriptorProto)
))
_sym_db.RegisterMessage(OneofDescriptorProto)
EnumDescriptorProto = _reflection.GeneratedProtocolMessageType('EnumDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _ENUMDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.EnumDescriptorProto)
))
_sym_db.RegisterMessage(EnumDescriptorProto)
EnumValueDescriptorProto = _reflection.GeneratedProtocolMessageType('EnumValueDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _ENUMVALUEDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.EnumValueDescriptorProto)
))
_sym_db.RegisterMessage(EnumValueDescriptorProto)
ServiceDescriptorProto = _reflection.GeneratedProtocolMessageType('ServiceDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _SERVICEDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.ServiceDescriptorProto)
))
_sym_db.RegisterMessage(ServiceDescriptorProto)
MethodDescriptorProto = _reflection.GeneratedProtocolMessageType('MethodDescriptorProto', (_message.Message,), dict(
DESCRIPTOR = _METHODDESCRIPTORPROTO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.MethodDescriptorProto)
))
_sym_db.RegisterMessage(MethodDescriptorProto)
FileOptions = _reflection.GeneratedProtocolMessageType('FileOptions', (_message.Message,), dict(
DESCRIPTOR = _FILEOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.FileOptions)
))
_sym_db.RegisterMessage(FileOptions)
MessageOptions = _reflection.GeneratedProtocolMessageType('MessageOptions', (_message.Message,), dict(
DESCRIPTOR = _MESSAGEOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.MessageOptions)
))
_sym_db.RegisterMessage(MessageOptions)
FieldOptions = _reflection.GeneratedProtocolMessageType('FieldOptions', (_message.Message,), dict(
DESCRIPTOR = _FIELDOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.FieldOptions)
))
_sym_db.RegisterMessage(FieldOptions)
EnumOptions = _reflection.GeneratedProtocolMessageType('EnumOptions', (_message.Message,), dict(
DESCRIPTOR = _ENUMOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.EnumOptions)
))
_sym_db.RegisterMessage(EnumOptions)
EnumValueOptions = _reflection.GeneratedProtocolMessageType('EnumValueOptions', (_message.Message,), dict(
DESCRIPTOR = _ENUMVALUEOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.EnumValueOptions)
))
_sym_db.RegisterMessage(EnumValueOptions)
ServiceOptions = _reflection.GeneratedProtocolMessageType('ServiceOptions', (_message.Message,), dict(
DESCRIPTOR = _SERVICEOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.ServiceOptions)
))
_sym_db.RegisterMessage(ServiceOptions)
MethodOptions = _reflection.GeneratedProtocolMessageType('MethodOptions', (_message.Message,), dict(
DESCRIPTOR = _METHODOPTIONS,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.MethodOptions)
))
_sym_db.RegisterMessage(MethodOptions)
UninterpretedOption = _reflection.GeneratedProtocolMessageType('UninterpretedOption', (_message.Message,), dict(
NamePart = _reflection.GeneratedProtocolMessageType('NamePart', (_message.Message,), dict(
DESCRIPTOR = _UNINTERPRETEDOPTION_NAMEPART,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.UninterpretedOption.NamePart)
))
,
DESCRIPTOR = _UNINTERPRETEDOPTION,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.UninterpretedOption)
))
_sym_db.RegisterMessage(UninterpretedOption)
_sym_db.RegisterMessage(UninterpretedOption.NamePart)
SourceCodeInfo = _reflection.GeneratedProtocolMessageType('SourceCodeInfo', (_message.Message,), dict(
Location = _reflection.GeneratedProtocolMessageType('Location', (_message.Message,), dict(
DESCRIPTOR = _SOURCECODEINFO_LOCATION,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.SourceCodeInfo.Location)
))
,
DESCRIPTOR = _SOURCECODEINFO,
__module__ = 'google.protobuf.descriptor_pb2'
# @@protoc_insertion_point(class_scope:google.protobuf.SourceCodeInfo)
))
_sym_db.RegisterMessage(SourceCodeInfo)
_sym_db.RegisterMessage(SourceCodeInfo.Location)
# @@protoc_insertion_point(module_scope)
third_party/google/protobuf/descriptor_pool.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Provides DescriptorPool to use as a container for proto2 descriptors.
The DescriptorPool is used in conjection with a DescriptorDatabase to maintain
a collection of protocol buffer descriptors for use when dynamically creating
message types at runtime.
For most applications protocol buffers should be used via modules generated by
the protocol buffer compiler tool. This should only be used when the type of
protocol buffers used in an application or library cannot be predetermined.
Below is a straightforward example on how to use this class:
pool = DescriptorPool()
file_descriptor_protos = [ ... ]
for file_descriptor_proto in file_descriptor_protos:
pool.Add(file_descriptor_proto)
my_message_descriptor = pool.FindMessageTypeByName('some.package.MessageType')
The message descriptor can be used in conjunction with the message_factory
module in order to create a protocol buffer class that can be encoded and
decoded.
If you want to get a Python class for the specified proto, use the
helper functions inside google.protobuf.message_factory
directly instead of this class.
"""
__author__ = 'matthewtoia@google.com (Matt Toia)'
import sys
from google.protobuf import descriptor
from google.protobuf import descriptor_database
from google.protobuf import text_encoding
def _NormalizeFullyQualifiedName(name):
"""Remove leading period from fully-qualified type name.
Due to b/13860351 in descriptor_database.py, types in the root namespace are
generated with a leading period. This function removes that prefix.
Args:
name: A str, the fully-qualified symbol name.
Returns:
A str, the normalized fully-qualified symbol name.
"""
return name.lstrip('.')
class DescriptorPool(object):
"""A collection of protobufs dynamically constructed by descriptor protos."""
def __init__(self, descriptor_db=None):
"""Initializes a Pool of proto buffs.
The descriptor_db argument to the constructor is provided to allow
specialized file descriptor proto lookup code to be triggered on demand. An
example would be an implementation which will read and compile a file
specified in a call to FindFileByName() and not require the call to Add()
at all. Results from this database will be cached internally here as well.
Args:
descriptor_db: A secondary source of file descriptors.
"""
self._internal_db = descriptor_database.DescriptorDatabase()
self._descriptor_db = descriptor_db
self._descriptors = {}
self._enum_descriptors = {}
self._file_descriptors = {}
def Add(self, file_desc_proto):
"""Adds the FileDescriptorProto and its types to this pool.
Args:
file_desc_proto: The FileDescriptorProto to add.
"""
self._internal_db.Add(file_desc_proto)
def AddDescriptor(self, desc):
"""Adds a Descriptor to the pool, non-recursively.
If the Descriptor contains nested messages or enums, the caller must
explicitly register them. This method also registers the FileDescriptor
associated with the message.
Args:
desc: A Descriptor.
"""
if not isinstance(desc, descriptor.Descriptor):
raise TypeError('Expected instance of descriptor.Descriptor.')
self._descriptors[desc.full_name] = desc
self.AddFileDescriptor(desc.file)
def AddEnumDescriptor(self, enum_desc):
"""Adds an EnumDescriptor to the pool.
This method also registers the FileDescriptor associated with the message.
Args:
enum_desc: An EnumDescriptor.
"""
if not isinstance(enum_desc, descriptor.EnumDescriptor):
raise TypeError('Expected instance of descriptor.EnumDescriptor.')
self._enum_descriptors[enum_desc.full_name] = enum_desc
self.AddFileDescriptor(enum_desc.file)
def AddFileDescriptor(self, file_desc):
"""Adds a FileDescriptor to the pool, non-recursively.
If the FileDescriptor contains messages or enums, the caller must explicitly
register them.
Args:
file_desc: A FileDescriptor.
"""
if not isinstance(file_desc, descriptor.FileDescriptor):
raise TypeError('Expected instance of descriptor.FileDescriptor.')
self._file_descriptors[file_desc.name] = file_desc
def FindFileByName(self, file_name):
"""Gets a FileDescriptor by file name.
Args:
file_name: The path to the file to get a descriptor for.
Returns:
A FileDescriptor for the named file.
Raises:
KeyError: if the file can not be found in the pool.
"""
try:
return self._file_descriptors[file_name]
except KeyError:
pass
try:
file_proto = self._internal_db.FindFileByName(file_name)
except KeyError:
_, error, _ = sys.exc_info() #PY25 compatible for GAE.
if self._descriptor_db:
file_proto = self._descriptor_db.FindFileByName(file_name)
else:
raise error
if not file_proto:
raise KeyError('Cannot find a file named %s' % file_name)
return self._ConvertFileProtoToFileDescriptor(file_proto)
def FindFileContainingSymbol(self, symbol):
"""Gets the FileDescriptor for the file containing the specified symbol.
Args:
symbol: The name of the symbol to search for.
Returns:
A FileDescriptor that contains the specified symbol.
Raises:
KeyError: if the file can not be found in the pool.
"""
symbol = _NormalizeFullyQualifiedName(symbol)
try:
return self._descriptors[symbol].file
except KeyError:
pass
try:
return self._enum_descriptors[symbol].file
except KeyError:
pass
try:
file_proto = self._internal_db.FindFileContainingSymbol(symbol)
except KeyError:
_, error, _ = sys.exc_info() #PY25 compatible for GAE.
if self._descriptor_db:
file_proto = self._descriptor_db.FindFileContainingSymbol(symbol)
else:
raise error
if not file_proto:
raise KeyError('Cannot find a file containing %s' % symbol)
return self._ConvertFileProtoToFileDescriptor(file_proto)
def FindMessageTypeByName(self, full_name):
"""Loads the named descriptor from the pool.
Args:
full_name: The full name of the descriptor to load.
Returns:
The descriptor for the named type.
"""
full_name = _NormalizeFullyQualifiedName(full_name)
if full_name not in self._descriptors:
self.FindFileContainingSymbol(full_name)
return self._descriptors[full_name]
def FindEnumTypeByName(self, full_name):
"""Loads the named enum descriptor from the pool.
Args:
full_name: The full name of the enum descriptor to load.
Returns:
The enum descriptor for the named type.
"""
full_name = _NormalizeFullyQualifiedName(full_name)
if full_name not in self._enum_descriptors:
self.FindFileContainingSymbol(full_name)
return self._enum_descriptors[full_name]
def _ConvertFileProtoToFileDescriptor(self, file_proto):
"""Creates a FileDescriptor from a proto or returns a cached copy.
This method also has the side effect of loading all the symbols found in
the file into the appropriate dictionaries in the pool.
Args:
file_proto: The proto to convert.
Returns:
A FileDescriptor matching the passed in proto.
"""
if file_proto.name not in self._file_descriptors:
built_deps = list(self._GetDeps(file_proto.dependency))
direct_deps = [self.FindFileByName(n) for n in file_proto.dependency]
file_descriptor = descriptor.FileDescriptor(
name=file_proto.name,
package=file_proto.package,
options=file_proto.options,
serialized_pb=file_proto.SerializeToString(),
dependencies=direct_deps)
scope = {}
# This loop extracts all the message and enum types from all the
# dependencoes of the file_proto. This is necessary to create the
# scope of available message types when defining the passed in
# file proto.
for dependency in built_deps:
scope.update(self._ExtractSymbols(
dependency.message_types_by_name.values()))
scope.update((_PrefixWithDot(enum.full_name), enum)
for enum in dependency.enum_types_by_name.values())
for message_type in file_proto.message_type:
message_desc = self._ConvertMessageDescriptor(
message_type, file_proto.package, file_descriptor, scope)
file_descriptor.message_types_by_name[message_desc.name] = message_desc
for enum_type in file_proto.enum_type:
file_descriptor.enum_types_by_name[enum_type.name] = (
self._ConvertEnumDescriptor(enum_type, file_proto.package,
file_descriptor, None, scope))
for index, extension_proto in enumerate(file_proto.extension):
extension_desc = self.MakeFieldDescriptor(
extension_proto, file_proto.package, index, is_extension=True)
extension_desc.containing_type = self._GetTypeFromScope(
file_descriptor.package, extension_proto.extendee, scope)
self.SetFieldType(extension_proto, extension_desc,
file_descriptor.package, scope)
file_descriptor.extensions_by_name[extension_desc.name] = extension_desc
for desc_proto in file_proto.message_type:
self.SetAllFieldTypes(file_proto.package, desc_proto, scope)
if file_proto.package:
desc_proto_prefix = _PrefixWithDot(file_proto.package)
else:
desc_proto_prefix = ''
for desc_proto in file_proto.message_type:
desc = self._GetTypeFromScope(desc_proto_prefix, desc_proto.name, scope)
file_descriptor.message_types_by_name[desc_proto.name] = desc
self.Add(file_proto)
self._file_descriptors[file_proto.name] = file_descriptor
return self._file_descriptors[file_proto.name]
def _ConvertMessageDescriptor(self, desc_proto, package=None, file_desc=None,
scope=None):
"""Adds the proto to the pool in the specified package.
Args:
desc_proto: The descriptor_pb2.DescriptorProto protobuf message.
package: The package the proto should be located in.
file_desc: The file containing this message.
scope: Dict mapping short and full symbols to message and enum types.
Returns:
The added descriptor.
"""
if package:
desc_name = '.'.join((package, desc_proto.name))
else:
desc_name = desc_proto.name
if file_desc is None:
file_name = None
else:
file_name = file_desc.name
if scope is None:
scope = {}
nested = [
self._ConvertMessageDescriptor(nested, desc_name, file_desc, scope)
for nested in desc_proto.nested_type]
enums = [
self._ConvertEnumDescriptor(enum, desc_name, file_desc, None, scope)
for enum in desc_proto.enum_type]
fields = [self.MakeFieldDescriptor(field, desc_name, index)
for index, field in enumerate(desc_proto.field)]
extensions = [
self.MakeFieldDescriptor(extension, desc_name, index, is_extension=True)
for index, extension in enumerate(desc_proto.extension)]
oneofs = [
descriptor.OneofDescriptor(desc.name, '.'.join((desc_name, desc.name)),
index, None, [])
for index, desc in enumerate(desc_proto.oneof_decl)]
extension_ranges = [(r.start, r.end) for r in desc_proto.extension_range]
if extension_ranges:
is_extendable = True
else:
is_extendable = False
desc = descriptor.Descriptor(
name=desc_proto.name,
full_name=desc_name,
filename=file_name,
containing_type=None,
fields=fields,
oneofs=oneofs,
nested_types=nested,
enum_types=enums,
extensions=extensions,
options=desc_proto.options,
is_extendable=is_extendable,
extension_ranges=extension_ranges,
file=file_desc,
serialized_start=None,
serialized_end=None)
for nested in desc.nested_types:
nested.containing_type = desc
for enum in desc.enum_types:
enum.containing_type = desc
for field_index, field_desc in enumerate(desc_proto.field):
if field_desc.HasField('oneof_index'):
oneof_index = field_desc.oneof_index
oneofs[oneof_index].fields.append(fields[field_index])
fields[field_index].containing_oneof = oneofs[oneof_index]
scope[_PrefixWithDot(desc_name)] = desc
self._descriptors[desc_name] = desc
return desc
def _ConvertEnumDescriptor(self, enum_proto, package=None, file_desc=None,
containing_type=None, scope=None):
"""Make a protobuf EnumDescriptor given an EnumDescriptorProto protobuf.
Args:
enum_proto: The descriptor_pb2.EnumDescriptorProto protobuf message.
package: Optional package name for the new message EnumDescriptor.
file_desc: The file containing the enum descriptor.
containing_type: The type containing this enum.
scope: Scope containing available types.
Returns:
The added descriptor
"""
if package:
enum_name = '.'.join((package, enum_proto.name))
else:
enum_name = enum_proto.name
if file_desc is None:
file_name = None
else:
file_name = file_desc.name
values = [self._MakeEnumValueDescriptor(value, index)
for index, value in enumerate(enum_proto.value)]
desc = descriptor.EnumDescriptor(name=enum_proto.name,
full_name=enum_name,
filename=file_name,
file=file_desc,
values=values,
containing_type=containing_type,
options=enum_proto.options)
scope['.%s' % enum_name] = desc
self._enum_descriptors[enum_name] = desc
return desc
def MakeFieldDescriptor(self, field_proto, message_name, index,
is_extension=False):
"""Creates a field descriptor from a FieldDescriptorProto.
For message and enum type fields, this method will do a look up
in the pool for the appropriate descriptor for that type. If it
is unavailable, it will fall back to the _source function to
create it. If this type is still unavailable, construction will
fail.
Args:
field_proto: The proto describing the field.
message_name: The name of the containing message.
index: Index of the field
is_extension: Indication that this field is for an extension.
Returns:
An initialized FieldDescriptor object
"""
if message_name:
full_name = '.'.join((message_name, field_proto.name))
else:
full_name = field_proto.name
return descriptor.FieldDescriptor(
name=field_proto.name,
full_name=full_name,
index=index,
number=field_proto.number,
type=field_proto.type,
cpp_type=None,
message_type=None,
enum_type=None,
containing_type=None,
label=field_proto.label,
has_default_value=False,
default_value=None,
is_extension=is_extension,
extension_scope=None,
options=field_proto.options)
def SetAllFieldTypes(self, package, desc_proto, scope):
"""Sets all the descriptor's fields's types.
This method also sets the containing types on any extensions.
Args:
package: The current package of desc_proto.
desc_proto: The message descriptor to update.
scope: Enclosing scope of available types.
"""
package = _PrefixWithDot(package)
main_desc = self._GetTypeFromScope(package, desc_proto.name, scope)
if package == '.':
nested_package = _PrefixWithDot(desc_proto.name)
else:
nested_package = '.'.join([package, desc_proto.name])
for field_proto, field_desc in zip(desc_proto.field, main_desc.fields):
self.SetFieldType(field_proto, field_desc, nested_package, scope)
for extension_proto, extension_desc in (
zip(desc_proto.extension, main_desc.extensions)):
extension_desc.containing_type = self._GetTypeFromScope(
nested_package, extension_proto.extendee, scope)
self.SetFieldType(extension_proto, extension_desc, nested_package, scope)
for nested_type in desc_proto.nested_type:
self.SetAllFieldTypes(nested_package, nested_type, scope)
def SetFieldType(self, field_proto, field_desc, package, scope):
"""Sets the field's type, cpp_type, message_type and enum_type.
Args:
field_proto: Data about the field in proto format.
field_desc: The descriptor to modiy.
package: The package the field's container is in.
scope: Enclosing scope of available types.
"""
if field_proto.type_name:
desc = self._GetTypeFromScope(package, field_proto.type_name, scope)
else:
desc = None
if not field_proto.HasField('type'):
if isinstance(desc, descriptor.Descriptor):
field_proto.type = descriptor.FieldDescriptor.TYPE_MESSAGE
else:
field_proto.type = descriptor.FieldDescriptor.TYPE_ENUM
field_desc.cpp_type = descriptor.FieldDescriptor.ProtoTypeToCppProtoType(
field_proto.type)
if (field_proto.type == descriptor.FieldDescriptor.TYPE_MESSAGE
or field_proto.type == descriptor.FieldDescriptor.TYPE_GROUP):
field_desc.message_type = desc
if field_proto.type == descriptor.FieldDescriptor.TYPE_ENUM:
field_desc.enum_type = desc
if field_proto.label == descriptor.FieldDescriptor.LABEL_REPEATED:
field_desc.has_default_value = False
field_desc.default_value = []
elif field_proto.HasField('default_value'):
field_desc.has_default_value = True
if (field_proto.type == descriptor.FieldDescriptor.TYPE_DOUBLE or
field_proto.type == descriptor.FieldDescriptor.TYPE_FLOAT):
field_desc.default_value = float(field_proto.default_value)
elif field_proto.type == descriptor.FieldDescriptor.TYPE_STRING:
field_desc.default_value = field_proto.default_value
elif field_proto.type == descriptor.FieldDescriptor.TYPE_BOOL:
field_desc.default_value = field_proto.default_value.lower() == 'true'
elif field_proto.type == descriptor.FieldDescriptor.TYPE_ENUM:
field_desc.default_value = field_desc.enum_type.values_by_name[
field_proto.default_value].index
elif field_proto.type == descriptor.FieldDescriptor.TYPE_BYTES:
field_desc.default_value = text_encoding.CUnescape(
field_proto.default_value)
else:
field_desc.default_value = int(field_proto.default_value)
else:
field_desc.has_default_value = False
field_desc.default_value = None
field_desc.type = field_proto.type
def _MakeEnumValueDescriptor(self, value_proto, index):
"""Creates a enum value descriptor object from a enum value proto.
Args:
value_proto: The proto describing the enum value.
index: The index of the enum value.
Returns:
An initialized EnumValueDescriptor object.
"""
return descriptor.EnumValueDescriptor(
name=value_proto.name,
index=index,
number=value_proto.number,
options=value_proto.options,
type=None)
def _ExtractSymbols(self, descriptors):
"""Pulls out all the symbols from descriptor protos.
Args:
descriptors: The messages to extract descriptors from.
Yields:
A two element tuple of the type name and descriptor object.
"""
for desc in descriptors:
yield (_PrefixWithDot(desc.full_name), desc)
for symbol in self._ExtractSymbols(desc.nested_types):
yield symbol
for enum in desc.enum_types:
yield (_PrefixWithDot(enum.full_name), enum)
def _GetDeps(self, dependencies):
"""Recursively finds dependencies for file protos.
Args:
dependencies: The names of the files being depended on.
Yields:
Each direct and indirect dependency.
"""
for dependency in dependencies:
dep_desc = self.FindFileByName(dependency)
yield dep_desc
for parent_dep in dep_desc.dependencies:
yield parent_dep
def _GetTypeFromScope(self, package, type_name, scope):
"""Finds a given type name in the current scope.
Args:
package: The package the proto should be located in.
type_name: The name of the type to be found in the scope.
scope: Dict mapping short and full symbols to message and enum types.
Returns:
The descriptor for the requested type.
"""
if type_name not in scope:
components = _PrefixWithDot(package).split('.')
while components:
possible_match = '.'.join(components + [type_name])
if possible_match in scope:
type_name = possible_match
break
else:
components.pop(-1)
return scope[type_name]
def _PrefixWithDot(name):
return name if name.startswith('.') else '.%s' % name
third_party/google/protobuf/internal/api_implementation.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Determine which implementation of the protobuf API is used in this process.
"""
import os
import sys
try:
# pylint: disable=g-import-not-at-top
from google.protobuf.internal import _api_implementation
# The compile-time constants in the _api_implementation module can be used to
# switch to a certain implementation of the Python API at build time.
_api_version = _api_implementation.api_version
del _api_implementation
except ImportError:
_api_version = 0
_default_implementation_type = (
'python' if _api_version == 0 else 'cpp')
_default_version_str = (
'1' if _api_version <= 1 else '2')
# This environment variable can be used to switch to a certain implementation
# of the Python API, overriding the compile-time constants in the
# _api_implementation module. Right now only 'python' and 'cpp' are valid
# values. Any other value will be ignored.
_implementation_type = os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION',
_default_implementation_type)
if _implementation_type != 'python':
_implementation_type = 'cpp'
# This environment variable can be used to switch between the two
# 'cpp' implementations, overriding the compile-time constants in the
# _api_implementation module. Right now only 1 and 2 are valid values. Any other
# value will be ignored.
_implementation_version_str = os.getenv(
'PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION',
_default_version_str)
if _implementation_version_str not in ('1', '2'):
raise ValueError(
"unsupported PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION: '" +
_implementation_version_str + "' (supported versions: 1, 2)"
)
_implementation_version = int(_implementation_version_str)
# Usage of this function is discouraged. Clients shouldn't care which
# implementation of the API is in use. Note that there is no guarantee
# that differences between APIs will be maintained.
# Please don't use this function if possible.
def Type():
return _implementation_type
# See comment on 'Type' above.
def Version():
return _implementation_version
third_party/google/protobuf/internal/containers.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Contains container classes to represent different protocol buffer types.
This file defines container classes which represent categories of protocol
buffer field types which need extra maintenance. Currently these categories
are:
- Repeated scalar fields - These are all repeated fields which aren't
composite (e.g. they are of simple types like int32, string, etc).
- Repeated composite fields - Repeated fields which are composite. This
includes groups and nested messages.
"""
__author__ = 'petar@google.com (Petar Petrov)'
class BaseContainer(object):
"""Base container class."""
# Minimizes memory usage and disallows assignment to other attributes.
__slots__ = ['_message_listener', '_values']
def __init__(self, message_listener):
"""
Args:
message_listener: A MessageListener implementation.
The RepeatedScalarFieldContainer will call this object's
Modified() method when it is modified.
"""
self._message_listener = message_listener
self._values = []
def __getitem__(self, key):
"""Retrieves item by the specified key."""
return self._values[key]
def __len__(self):
"""Returns the number of elements in the container."""
return len(self._values)
def __ne__(self, other):
"""Checks if another instance isn't equal to this one."""
# The concrete classes should define __eq__.
return not self == other
def __hash__(self):
raise TypeError('unhashable object')
def __repr__(self):
return repr(self._values)
def sort(self, *args, **kwargs):
# Continue to support the old sort_function keyword argument.
# This is expected to be a rare occurrence, so use LBYL to avoid
# the overhead of actually catching KeyError.
if 'sort_function' in kwargs:
kwargs['cmp'] = kwargs.pop('sort_function')
self._values.sort(*args, **kwargs)
class RepeatedScalarFieldContainer(BaseContainer):
"""Simple, type-checked, list-like container for holding repeated scalars."""
# Disallows assignment to other attributes.
__slots__ = ['_type_checker']
def __init__(self, message_listener, type_checker):
"""
Args:
message_listener: A MessageListener implementation.
The RepeatedScalarFieldContainer will call this object's
Modified() method when it is modified.
type_checker: A type_checkers.ValueChecker instance to run on elements
inserted into this container.
"""
super(RepeatedScalarFieldContainer, self).__init__(message_listener)
self._type_checker = type_checker
def append(self, value):
"""Appends an item to the list. Similar to list.append()."""
self._values.append(self._type_checker.CheckValue(value))
if not self._message_listener.dirty:
self._message_listener.Modified()
def insert(self, key, value):
"""Inserts the item at the specified position. Similar to list.insert()."""
self._values.insert(key, self._type_checker.CheckValue(value))
if not self._message_listener.dirty:
self._message_listener.Modified()
def extend(self, elem_seq):
"""Extends by appending the given sequence. Similar to list.extend()."""
if not elem_seq:
return
new_values = []
for elem in elem_seq:
new_values.append(self._type_checker.CheckValue(elem))
self._values.extend(new_values)
self._message_listener.Modified()
def MergeFrom(self, other):
"""Appends the contents of another repeated field of the same type to this
one. We do not check the types of the individual fields.
"""
self._values.extend(other._values)
self._message_listener.Modified()
def remove(self, elem):
"""Removes an item from the list. Similar to list.remove()."""
self._values.remove(elem)
self._message_listener.Modified()
def __setitem__(self, key, value):
"""Sets the item on the specified position."""
if isinstance(key, slice): # PY3
if key.step is not None:
raise ValueError('Extended slices not supported')
self.__setslice__(key.start, key.stop, value)
else:
self._values[key] = self._type_checker.CheckValue(value)
self._message_listener.Modified()
def __getslice__(self, start, stop):
"""Retrieves the subset of items from between the specified indices."""
return self._values[start:stop]
def __setslice__(self, start, stop, values):
"""Sets the subset of items from between the specified indices."""
new_values = []
for value in values:
new_values.append(self._type_checker.CheckValue(value))
self._values[start:stop] = new_values
self._message_listener.Modified()
def __delitem__(self, key):
"""Deletes the item at the specified position."""
del self._values[key]
self._message_listener.Modified()
def __delslice__(self, start, stop):
"""Deletes the subset of items from between the specified indices."""
del self._values[start:stop]
self._message_listener.Modified()
def __eq__(self, other):
"""Compares the current instance with another one."""
if self is other:
return True
# Special case for the same type which should be common and fast.
if isinstance(other, self.__class__):
return other._values == self._values
# We are presumably comparing against some other sequence type.
return other == self._values
class RepeatedCompositeFieldContainer(BaseContainer):
"""Simple, list-like container for holding repeated composite fields."""
# Disallows assignment to other attributes.
__slots__ = ['_message_descriptor']
def __init__(self, message_listener, message_descriptor):
"""
Note that we pass in a descriptor instead of the generated directly,
since at the time we construct a _RepeatedCompositeFieldContainer we
haven't yet necessarily initialized the type that will be contained in the
container.
Args:
message_listener: A MessageListener implementation.
The RepeatedCompositeFieldContainer will call this object's
Modified() method when it is modified.
message_descriptor: A Descriptor instance describing the protocol type
that should be present in this container. We'll use the
_concrete_class field of this descriptor when the client calls add().
"""
super(RepeatedCompositeFieldContainer, self).__init__(message_listener)
self._message_descriptor = message_descriptor
def add(self, **kwargs):
"""Adds a new element at the end of the list and returns it. Keyword
arguments may be used to initialize the element.
"""
new_element = self._message_descriptor._concrete_class(**kwargs)
new_element._SetListener(self._message_listener)
self._values.append(new_element)
if not self._message_listener.dirty:
self._message_listener.Modified()
return new_element
def extend(self, elem_seq):
"""Extends by appending the given sequence of elements of the same type
as this one, copying each individual message.
"""
message_class = self._message_descriptor._concrete_class
listener = self._message_listener
values = self._values
for message in elem_seq:
new_element = message_class()
new_element._SetListener(listener)
new_element.MergeFrom(message)
values.append(new_element)
listener.Modified()
def MergeFrom(self, other):
"""Appends the contents of another repeated field of the same type to this
one, copying each individual message.
"""
self.extend(other._values)
def remove(self, elem):
"""Removes an item from the list. Similar to list.remove()."""
self._values.remove(elem)
self._message_listener.Modified()
def __getslice__(self, start, stop):
"""Retrieves the subset of items from between the specified indices."""
return self._values[start:stop]
def __delitem__(self, key):
"""Deletes the item at the specified position."""
del self._values[key]
self._message_listener.Modified()
def __delslice__(self, start, stop):
"""Deletes the subset of items from between the specified indices."""
del self._values[start:stop]
self._message_listener.Modified()
def __eq__(self, other):
"""Compares the current instance with another one."""
if self is other:
return True
if not isinstance(other, self.__class__):
raise TypeError('Can only compare repeated composite fields against '
'other repeated composite fields.')
return self._values == other._values
third_party/google/protobuf/internal/cpp_message.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Contains helper functions used to create protocol message classes from
Descriptor objects at runtime backed by the protocol buffer C++ API.
"""
__author__ = 'petar@google.com (Petar Petrov)'
import copy_reg
import operator
from google.protobuf.internal import _net_proto2___python
from google.protobuf.internal import enum_type_wrapper
from google.protobuf import message
_LABEL_REPEATED = _net_proto2___python.LABEL_REPEATED
_LABEL_OPTIONAL = _net_proto2___python.LABEL_OPTIONAL
_CPPTYPE_MESSAGE = _net_proto2___python.CPPTYPE_MESSAGE
_TYPE_MESSAGE = _net_proto2___python.TYPE_MESSAGE
def GetDescriptorPool():
"""Creates a new DescriptorPool C++ object."""
return _net_proto2___python.NewCDescriptorPool()
_pool = GetDescriptorPool()
def GetFieldDescriptor(full_field_name):
"""Searches for a field descriptor given a full field name."""
return _pool.FindFieldByName(full_field_name)
def BuildFile(content):
"""Registers a new proto file in the underlying C++ descriptor pool."""
_net_proto2___python.BuildFile(content)
def GetExtensionDescriptor(full_extension_name):
"""Searches for extension descriptor given a full field name."""
return _pool.FindExtensionByName(full_extension_name)
def NewCMessage(full_message_name):
"""Creates a new C++ protocol message by its name."""
return _net_proto2___python.NewCMessage(full_message_name)
def ScalarProperty(cdescriptor):
"""Returns a scalar property for the given descriptor."""
def Getter(self):
return self._cmsg.GetScalar(cdescriptor)
def Setter(self, value):
self._cmsg.SetScalar(cdescriptor, value)
return property(Getter, Setter)
def CompositeProperty(cdescriptor, message_type):
"""Returns a Python property the given composite field."""
def Getter(self):
sub_message = self._composite_fields.get(cdescriptor.name, None)
if sub_message is None:
cmessage = self._cmsg.NewSubMessage(cdescriptor)
sub_message = message_type._concrete_class(__cmessage=cmessage)
self._composite_fields[cdescriptor.name] = sub_message
return sub_message
return property(Getter)
class RepeatedScalarContainer(object):
"""Container for repeated scalar fields."""
__slots__ = ['_message', '_cfield_descriptor', '_cmsg']
def __init__(self, msg, cfield_descriptor):
self._message = msg
self._cmsg = msg._cmsg
self._cfield_descriptor = cfield_descriptor
def append(self, value):
self._cmsg.AddRepeatedScalar(
self._cfield_descriptor, value)
def extend(self, sequence):
for element in sequence:
self.append(element)
def insert(self, key, value):
values = self[slice(None, None, None)]
values.insert(key, value)
self._cmsg.AssignRepeatedScalar(self._cfield_descriptor, values)
def remove(self, value):
values = self[slice(None, None, None)]
values.remove(value)
self._cmsg.AssignRepeatedScalar(self._cfield_descriptor, values)
def __setitem__(self, key, value):
values = self[slice(None, None, None)]
values[key] = value
self._cmsg.AssignRepeatedScalar(self._cfield_descriptor, values)
def __getitem__(self, key):
return self._cmsg.GetRepeatedScalar(self._cfield_descriptor, key)
def __delitem__(self, key):
self._cmsg.DeleteRepeatedField(self._cfield_descriptor, key)
def __len__(self):
return len(self[slice(None, None, None)])
def __eq__(self, other):
if self is other:
return True
if not operator.isSequenceType(other):
raise TypeError(
'Can only compare repeated scalar fields against sequences.')
# We are presumably comparing against some other sequence type.
return other == self[slice(None, None, None)]
def __ne__(self, other):
return not self == other
def __hash__(self):
raise TypeError('unhashable object')
def sort(self, *args, **kwargs):
# Maintain compatibility with the previous interface.
if 'sort_function' in kwargs:
kwargs['cmp'] = kwargs.pop('sort_function')
self._cmsg.AssignRepeatedScalar(self._cfield_descriptor,
sorted(self, *args, **kwargs))
def RepeatedScalarProperty(cdescriptor):
"""Returns a Python property the given repeated scalar field."""
def Getter(self):
container = self._composite_fields.get(cdescriptor.name, None)
if container is None:
container = RepeatedScalarContainer(self, cdescriptor)
self._composite_fields[cdescriptor.name] = container
return container
def Setter(self, new_value):
raise AttributeError('Assignment not allowed to repeated field '
'"%s" in protocol message object.' % cdescriptor.name)
doc = 'Magic attribute generated for "%s" proto field.' % cdescriptor.name
return property(Getter, Setter, doc=doc)
class RepeatedCompositeContainer(object):
"""Container for repeated composite fields."""
__slots__ = ['_message', '_subclass', '_cfield_descriptor', '_cmsg']
def __init__(self, msg, cfield_descriptor, subclass):
self._message = msg
self._cmsg = msg._cmsg
self._subclass = subclass
self._cfield_descriptor = cfield_descriptor
def add(self, **kwargs):
cmessage = self._cmsg.AddMessage(self._cfield_descriptor)
return self._subclass(__cmessage=cmessage, __owner=self._message, **kwargs)
def extend(self, elem_seq):
"""Extends by appending the given sequence of elements of the same type
as this one, copying each individual message.
"""
for message in elem_seq:
self.add().MergeFrom(message)
def remove(self, value):
# TODO(protocol-devel): This is inefficient as it needs to generate a
# message pointer for each message only to do index(). Move this to a C++
# extension function.
self.__delitem__(self[slice(None, None, None)].index(value))
def MergeFrom(self, other):
for message in other[:]:
self.add().MergeFrom(message)
def __getitem__(self, key):
cmessages = self._cmsg.GetRepeatedMessage(
self._cfield_descriptor, key)
subclass = self._subclass
if not isinstance(cmessages, list):
return subclass(__cmessage=cmessages, __owner=self._message)
return [subclass(__cmessage=m, __owner=self._message) for m in cmessages]
def __delitem__(self, key):
self._cmsg.DeleteRepeatedField(
self._cfield_descriptor, key)
def __len__(self):
return self._cmsg.FieldLength(self._cfield_descriptor)
def __eq__(self, other):
"""Compares the current instance with another one."""
if self is other:
return True
if not isinstance(other, self.__class__):
raise TypeError('Can only compare repeated composite fields against '
'other repeated composite fields.')
messages = self[slice(None, None, None)]
other_messages = other[slice(None, None, None)]
return messages == other_messages
def __hash__(self):
raise TypeError('unhashable object')
def sort(self, cmp=None, key=None, reverse=False, **kwargs):
# Maintain compatibility with the old interface.
if cmp is None and 'sort_function' in kwargs:
cmp = kwargs.pop('sort_function')
# The cmp function, if provided, is passed the results of the key function,
# so we only need to wrap one of them.
if key is None:
index_key = self.__getitem__
else:
index_key = lambda i: key(self[i])
# Sort the list of current indexes by the underlying object.
indexes = range(len(self))
indexes.sort(cmp=cmp, key=index_key, reverse=reverse)
# Apply the transposition.
for dest, src in enumerate(indexes):
if dest == src:
continue
self._cmsg.SwapRepeatedFieldElements(self._cfield_descriptor, dest, src)
# Don't swap the same value twice.
indexes[src] = src
def RepeatedCompositeProperty(cdescriptor, message_type):
"""Returns a Python property for the given repeated composite field."""
def Getter(self):
container = self._composite_fields.get(cdescriptor.name, None)
if container is None:
container = RepeatedCompositeContainer(
self, cdescriptor, message_type._concrete_class)
self._composite_fields[cdescriptor.name] = container
return container
def Setter(self, new_value):
raise AttributeError('Assignment not allowed to repeated field '
'"%s" in protocol message object.' % cdescriptor.name)
doc = 'Magic attribute generated for "%s" proto field.' % cdescriptor.name
return property(Getter, Setter, doc=doc)
class ExtensionDict(object):
"""Extension dictionary added to each protocol message."""
def __init__(self, msg):
self._message = msg
self._cmsg = msg._cmsg
self._values = {}
def __setitem__(self, extension, value):
from google.protobuf import descriptor
if not isinstance(extension, descriptor.FieldDescriptor):
raise KeyError('Bad extension %r.' % (extension,))
cdescriptor = extension._cdescriptor
if (cdescriptor.label != _LABEL_OPTIONAL or
cdescriptor.cpp_type == _CPPTYPE_MESSAGE):
raise TypeError('Extension %r is repeated and/or a composite type.' % (
extension.full_name,))
self._cmsg.SetScalar(cdescriptor, value)
self._values[extension] = value
def __getitem__(self, extension):
from google.protobuf import descriptor
if not isinstance(extension, descriptor.FieldDescriptor):
raise KeyError('Bad extension %r.' % (extension,))
cdescriptor = extension._cdescriptor
if (cdescriptor.label != _LABEL_REPEATED and
cdescriptor.cpp_type != _CPPTYPE_MESSAGE):
return self._cmsg.GetScalar(cdescriptor)
ext = self._values.get(extension, None)
if ext is not None:
return ext
ext = self._CreateNewHandle(extension)
self._values[extension] = ext
return ext
def ClearExtension(self, extension):
from google.protobuf import descriptor
if not isinstance(extension, descriptor.FieldDescriptor):
raise KeyError('Bad extension %r.' % (extension,))
self._cmsg.ClearFieldByDescriptor(extension._cdescriptor)
if extension in self._values:
del self._values[extension]
def HasExtension(self, extension):
from google.protobuf import descriptor
if not isinstance(extension, descriptor.FieldDescriptor):
raise KeyError('Bad extension %r.' % (extension,))
return self._cmsg.HasFieldByDescriptor(extension._cdescriptor)
def _FindExtensionByName(self, name):
"""Tries to find a known extension with the specified name.
Args:
name: Extension full name.
Returns:
Extension field descriptor.
"""
return self._message._extensions_by_name.get(name, None)
def _CreateNewHandle(self, extension):
cdescriptor = extension._cdescriptor
if (cdescriptor.label != _LABEL_REPEATED and
cdescriptor.cpp_type == _CPPTYPE_MESSAGE):
cmessage = self._cmsg.NewSubMessage(cdescriptor)
return extension.message_type._concrete_class(__cmessage=cmessage)
if cdescriptor.label == _LABEL_REPEATED:
if cdescriptor.cpp_type == _CPPTYPE_MESSAGE:
return RepeatedCompositeContainer(
self._message, cdescriptor, extension.message_type._concrete_class)
else:
return RepeatedScalarContainer(self._message, cdescriptor)
# This shouldn't happen!
assert False
return None
def NewMessage(bases, message_descriptor, dictionary):
"""Creates a new protocol message *class*."""
_AddClassAttributesForNestedExtensions(message_descriptor, dictionary)
_AddEnumValues(message_descriptor, dictionary)
_AddDescriptors(message_descriptor, dictionary)
return bases
def InitMessage(message_descriptor, cls):
"""Constructs a new message instance (called before instance's __init__)."""
cls._extensions_by_name = {}
_AddInitMethod(message_descriptor, cls)
_AddMessageMethods(message_descriptor, cls)
_AddPropertiesForExtensions(message_descriptor, cls)
copy_reg.pickle(cls, lambda obj: (cls, (), obj.__getstate__()))
def _AddDescriptors(message_descriptor, dictionary):
"""Sets up a new protocol message class dictionary.
Args:
message_descriptor: A Descriptor instance describing this message type.
dictionary: Class dictionary to which we'll add a '__slots__' entry.
"""
dictionary['__descriptors'] = {}
for field in message_descriptor.fields:
dictionary['__descriptors'][field.name] = GetFieldDescriptor(
field.full_name)
dictionary['__slots__'] = list(dictionary['__descriptors'].iterkeys()) + [
'_cmsg', '_owner', '_composite_fields', 'Extensions', '_HACK_REFCOUNTS']
def _AddEnumValues(message_descriptor, dictionary):
"""Sets class-level attributes for all enum fields defined in this message.
Args:
message_descriptor: Descriptor object for this message type.
dictionary: Class dictionary that should be populated.
"""
for enum_type in message_descriptor.enum_types:
dictionary[enum_type.name] = enum_type_wrapper.EnumTypeWrapper(enum_type)
for enum_value in enum_type.values:
dictionary[enum_value.name] = enum_value.number
def _AddClassAttributesForNestedExtensions(message_descriptor, dictionary):
"""Adds class attributes for the nested extensions."""
extension_dict = message_descriptor.extensions_by_name
for extension_name, extension_field in extension_dict.iteritems():
assert extension_name not in dictionary
dictionary[extension_name] = extension_field
def _AddInitMethod(message_descriptor, cls):
"""Adds an __init__ method to cls."""
# Create and attach message field properties to the message class.
# This can be done just once per message class, since property setters and
# getters are passed the message instance.
# This makes message instantiation extremely fast, and at the same time it
# doesn't require the creation of property objects for each message instance,
# which saves a lot of memory.
for field in message_descriptor.fields:
field_cdescriptor = cls.__descriptors[field.name]
if field.label == _LABEL_REPEATED:
if field.cpp_type == _CPPTYPE_MESSAGE:
value = RepeatedCompositeProperty(field_cdescriptor, field.message_type)
else:
value = RepeatedScalarProperty(field_cdescriptor)
elif field.cpp_type == _CPPTYPE_MESSAGE:
value = CompositeProperty(field_cdescriptor, field.message_type)
else:
value = ScalarProperty(field_cdescriptor)
setattr(cls, field.name, value)
# Attach a constant with the field number.
constant_name = field.name.upper() + '_FIELD_NUMBER'
setattr(cls, constant_name, field.number)
def Init(self, **kwargs):
"""Message constructor."""
cmessage = kwargs.pop('__cmessage', None)
if cmessage:
self._cmsg = cmessage
else:
self._cmsg = NewCMessage(message_descriptor.full_name)
# Keep a reference to the owner, as the owner keeps a reference to the
# underlying protocol buffer message.
owner = kwargs.pop('__owner', None)
if owner:
self._owner = owner
if message_descriptor.is_extendable:
self.Extensions = ExtensionDict(self)
else:
# Reference counting in the C++ code is broken and depends on
# the Extensions reference to keep this object alive during unit
# tests (see b/4856052). Remove this once b/4945904 is fixed.
self._HACK_REFCOUNTS = self
self._composite_fields = {}
for field_name, field_value in kwargs.iteritems():
field_cdescriptor = self.__descriptors.get(field_name, None)
if not field_cdescriptor:
raise ValueError('Protocol message has no "%s" field.' % field_name)
if field_cdescriptor.label == _LABEL_REPEATED:
if field_cdescriptor.cpp_type == _CPPTYPE_MESSAGE:
field_name = getattr(self, field_name)
for val in field_value:
field_name.add().MergeFrom(val)
else:
getattr(self, field_name).extend(field_value)
elif field_cdescriptor.cpp_type == _CPPTYPE_MESSAGE:
getattr(self, field_name).MergeFrom(field_value)
else:
setattr(self, field_name, field_value)
Init.__module__ = None
Init.__doc__ = None
cls.__init__ = Init
def _IsMessageSetExtension(field):
"""Checks if a field is a message set extension."""
return (field.is_extension and
field.containing_type.has_options and
field.containing_type.GetOptions().message_set_wire_format and
field.type == _TYPE_MESSAGE and
field.message_type == field.extension_scope and
field.label == _LABEL_OPTIONAL)
def _AddMessageMethods(message_descriptor, cls):
"""Adds the methods to a protocol message class."""
if message_descriptor.is_extendable:
def ClearExtension(self, extension):
self.Extensions.ClearExtension(extension)
def HasExtension(self, extension):
return self.Extensions.HasExtension(extension)
def HasField(self, field_name):
return self._cmsg.HasField(field_name)
def ClearField(self, field_name):
child_cmessage = None
if field_name in self._composite_fields:
child_field = self._composite_fields[field_name]
del self._composite_fields[field_name]
child_cdescriptor = self.__descriptors[field_name]
# TODO(anuraag): Support clearing repeated message fields as well.
if (child_cdescriptor.label != _LABEL_REPEATED and
child_cdescriptor.cpp_type == _CPPTYPE_MESSAGE):
child_field._owner = None
child_cmessage = child_field._cmsg
if child_cmessage is not None:
self._cmsg.ClearField(field_name, child_cmessage)
else:
self._cmsg.ClearField(field_name)
def Clear(self):
cmessages_to_release = []
for field_name, child_field in self._composite_fields.iteritems():
child_cdescriptor = self.__descriptors[field_name]
# TODO(anuraag): Support clearing repeated message fields as well.
if (child_cdescriptor.label != _LABEL_REPEATED and
child_cdescriptor.cpp_type == _CPPTYPE_MESSAGE):
child_field._owner = None
cmessages_to_release.append((child_cdescriptor, child_field._cmsg))
self._composite_fields.clear()
self._cmsg.Clear(cmessages_to_release)
def IsInitialized(self, errors=None):
if self._cmsg.IsInitialized():
return True
if errors is not None:
errors.extend(self.FindInitializationErrors());
return False
def SerializeToString(self):
if not self.IsInitialized():
raise message.EncodeError(
'Message %s is missing required fields: %s' % (
self._cmsg.full_name, ','.join(self.FindInitializationErrors())))
return self._cmsg.SerializeToString()
def SerializePartialToString(self):
return self._cmsg.SerializePartialToString()
def ParseFromString(self, serialized):
self.Clear()
self.MergeFromString(serialized)
def MergeFromString(self, serialized):
byte_size = self._cmsg.MergeFromString(serialized)
if byte_size < 0:
raise message.DecodeError('Unable to merge from string.')
return byte_size
def MergeFrom(self, msg):
if not isinstance(msg, cls):
raise TypeError(
"Parameter to MergeFrom() must be instance of same class: "
"expected %s got %s." % (cls.__name__, type(msg).__name__))
self._cmsg.MergeFrom(msg._cmsg)
def CopyFrom(self, msg):
self._cmsg.CopyFrom(msg._cmsg)
def ByteSize(self):
return self._cmsg.ByteSize()
def SetInParent(self):
return self._cmsg.SetInParent()
def ListFields(self):
all_fields = []
field_list = self._cmsg.ListFields()
fields_by_name = cls.DESCRIPTOR.fields_by_name
for is_extension, field_name in field_list:
if is_extension:
extension = cls._extensions_by_name[field_name]
all_fields.append((extension, self.Extensions[extension]))
else:
field_descriptor = fields_by_name[field_name]
all_fields.append(
(field_descriptor, getattr(self, field_name)))
all_fields.sort(key=lambda item: item[0].number)
return all_fields
def FindInitializationErrors(self):
return self._cmsg.FindInitializationErrors()
def __str__(self):
return str(self._cmsg)
def __eq__(self, other):
if self is other:
return True
if not isinstance(other, self.__class__):
return False
return self.ListFields() == other.ListFields()
def __ne__(self, other):
return not self == other
def __hash__(self):
raise TypeError('unhashable object')
def __unicode__(self):
# Lazy import to prevent circular import when text_format imports this file.
from google.protobuf import text_format
return text_format.MessageToString(self, as_utf8=True).decode('utf-8')
# Attach the local methods to the message class.
for key, value in locals().copy().iteritems():
if key not in ('key', 'value', '__builtins__', '__name__', '__doc__'):
setattr(cls, key, value)
# Static methods:
def RegisterExtension(extension_handle):
extension_handle.containing_type = cls.DESCRIPTOR
cls._extensions_by_name[extension_handle.full_name] = extension_handle
if _IsMessageSetExtension(extension_handle):
# MessageSet extension. Also register under type name.
cls._extensions_by_name[
extension_handle.message_type.full_name] = extension_handle
cls.RegisterExtension = staticmethod(RegisterExtension)
def FromString(string):
msg = cls()
msg.MergeFromString(string)
return msg
cls.FromString = staticmethod(FromString)
def _AddPropertiesForExtensions(message_descriptor, cls):
"""Adds properties for all fields in this protocol message type."""
extension_dict = message_descriptor.extensions_by_name
for extension_name, extension_field in extension_dict.iteritems():
constant_name = extension_name.upper() + '_FIELD_NUMBER'
setattr(cls, constant_name, extension_field.number)
third_party/google/protobuf/internal/decoder.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
# Copyright 2009 Google Inc. All Rights Reserved.
"""Code for decoding protocol buffer primitives.
This code is very similar to encoder.py -- read the docs for that module first.
A "decoder" is a function with the signature:
Decode(buffer, pos, end, message, field_dict)
The arguments are:
buffer: The string containing the encoded message.
pos: The current position in the string.
end: The position in the string where the current message ends. May be
less than len(buffer) if we're reading a sub-message.
message: The message object into which we're parsing.
field_dict: message._fields (avoids a hashtable lookup).
The decoder reads the field and stores it into field_dict, returning the new
buffer position. A decoder for a repeated field may proactively decode all of
the elements of that field, if they appear consecutively.
Note that decoders may throw any of the following:
IndexError: Indicates a truncated message.
struct.error: Unpacking of a fixed-width field failed.
message.DecodeError: Other errors.
Decoders are expected to raise an exception if they are called with pos > end.
This allows callers to be lax about bounds checking: it's fineto read past
"end" as long as you are sure that someone else will notice and throw an
exception later on.
Something up the call stack is expected to catch IndexError and struct.error
and convert them to message.DecodeError.
Decoders are constructed using decoder constructors with the signature:
MakeDecoder(field_number, is_repeated, is_packed, key, new_default)
The arguments are:
field_number: The field number of the field we want to decode.
is_repeated: Is the field a repeated field? (bool)
is_packed: Is the field a packed field? (bool)
key: The key to use when looking up the field within field_dict.
(This is actually the FieldDescriptor but nothing in this
file should depend on that.)
new_default: A function which takes a message object as a parameter and
returns a new instance of the default value for this field.
(This is called for repeated fields and sub-messages, when an
instance does not already exist.)
As with encoders, we define a decoder constructor for every type of field.
Then, for every field of every message class we construct an actual decoder.
That decoder goes into a dict indexed by tag, so when we decode a message
we repeatedly read a tag, look up the corresponding decoder, and invoke it.
"""
__author__ = 'kenton@google.com (Kenton Varda)'
import struct
import sys ##PY25
_PY2 = sys.version_info[0] < 3 ##PY25
from google.protobuf.internal import encoder
from google.protobuf.internal import wire_format
from google.protobuf import message
# This will overflow and thus become IEEE-754 "infinity". We would use
# "float('inf')" but it doesn't work on Windows pre-Python-2.6.
_POS_INF = 1e10000
_NEG_INF = -_POS_INF
_NAN = _POS_INF * 0
# This is not for optimization, but rather to avoid conflicts with local
# variables named "message".
_DecodeError = message.DecodeError
def _VarintDecoder(mask, result_type):
"""Return an encoder for a basic varint value (does not include tag).
Decoded values will be bitwise-anded with the given mask before being
returned, e.g. to limit them to 32 bits. The returned decoder does not
take the usual "end" parameter -- the caller is expected to do bounds checking
after the fact (often the caller can defer such checking until later). The
decoder returns a (value, new_pos) pair.
"""
local_ord = ord
py2 = _PY2 ##PY25
##!PY25 py2 = str is bytes
def DecodeVarint(buffer, pos):
result = 0
shift = 0
while 1:
b = local_ord(buffer[pos]) if py2 else buffer[pos]
result |= ((b & 0x7f) << shift)
pos += 1
if not (b & 0x80):
result &= mask
result = result_type(result)
return (result, pos)
shift += 7
if shift >= 64:
raise _DecodeError('Too many bytes when decoding varint.')
return DecodeVarint
def _SignedVarintDecoder(mask, result_type):
"""Like _VarintDecoder() but decodes signed values."""
local_ord = ord
py2 = _PY2 ##PY25
##!PY25 py2 = str is bytes
def DecodeVarint(buffer, pos):
result = 0
shift = 0
while 1:
b = local_ord(buffer[pos]) if py2 else buffer[pos]
result |= ((b & 0x7f) << shift)
pos += 1
if not (b & 0x80):
if result > 0x7fffffffffffffff:
result -= (1 << 64)
result |= ~mask
else:
result &= mask
result = result_type(result)
return (result, pos)
shift += 7
if shift >= 64:
raise _DecodeError('Too many bytes when decoding varint.')
return DecodeVarint
# We force 32-bit values to int and 64-bit values to long to make
# alternate implementations where the distinction is more significant
# (e.g. the C++ implementation) simpler.
_DecodeVarint = _VarintDecoder((1 << 64) - 1, long)
_DecodeSignedVarint = _SignedVarintDecoder((1 << 64) - 1, long)
# Use these versions for values which must be limited to 32 bits.
_DecodeVarint32 = _VarintDecoder((1 << 32) - 1, int)
_DecodeSignedVarint32 = _SignedVarintDecoder((1 << 32) - 1, int)
def ReadTag(buffer, pos):
"""Read a tag from the buffer, and return a (tag_bytes, new_pos) tuple.
We return the raw bytes of the tag rather than decoding them. The raw
bytes can then be used to look up the proper decoder. This effectively allows
us to trade some work that would be done in pure-python (decoding a varint)
for work that is done in C (searching for a byte string in a hash table).
In a low-level language it would be much cheaper to decode the varint and
use that, but not in Python.
"""
py2 = _PY2 ##PY25
##!PY25 py2 = str is bytes
start = pos
while (ord(buffer[pos]) if py2 else buffer[pos]) & 0x80:
pos += 1
pos += 1
return (buffer[start:pos], pos)
# --------------------------------------------------------------------
def _SimpleDecoder(wire_type, decode_value):
"""Return a constructor for a decoder for fields of a particular type.
Args:
wire_type: The field's wire type.
decode_value: A function which decodes an individual value, e.g.
_DecodeVarint()
"""
def SpecificDecoder(field_number, is_repeated, is_packed, key, new_default):
if is_packed:
local_DecodeVarint = _DecodeVarint
def DecodePackedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
(endpoint, pos) = local_DecodeVarint(buffer, pos)
endpoint += pos
if endpoint > end:
raise _DecodeError('Truncated message.')
while pos < endpoint:
(element, pos) = decode_value(buffer, pos)
value.append(element)
if pos > endpoint:
del value[-1] # Discard corrupt value.
raise _DecodeError('Packed element was truncated.')
return pos
return DecodePackedField
elif is_repeated:
tag_bytes = encoder.TagBytes(field_number, wire_type)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
(element, new_pos) = decode_value(buffer, pos)
value.append(element)
# Predict that the next tag is another copy of the same repeated
# field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos >= end:
# Prediction failed. Return.
if new_pos > end:
raise _DecodeError('Truncated message.')
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
(field_dict[key], pos) = decode_value(buffer, pos)
if pos > end:
del field_dict[key] # Discard corrupt value.
raise _DecodeError('Truncated message.')
return pos
return DecodeField
return SpecificDecoder
def _ModifiedDecoder(wire_type, decode_value, modify_value):
"""Like SimpleDecoder but additionally invokes modify_value on every value
before storing it. Usually modify_value is ZigZagDecode.
"""
# Reusing _SimpleDecoder is slightly slower than copying a bunch of code, but
# not enough to make a significant difference.
def InnerDecode(buffer, pos):
(result, new_pos) = decode_value(buffer, pos)
return (modify_value(result), new_pos)
return _SimpleDecoder(wire_type, InnerDecode)
def _StructPackDecoder(wire_type, format):
"""Return a constructor for a decoder for a fixed-width field.
Args:
wire_type: The field's wire type.
format: The format string to pass to struct.unpack().
"""
value_size = struct.calcsize(format)
local_unpack = struct.unpack
# Reusing _SimpleDecoder is slightly slower than copying a bunch of code, but
# not enough to make a significant difference.
# Note that we expect someone up-stack to catch struct.error and convert
# it to _DecodeError -- this way we don't have to set up exception-
# handling blocks every time we parse one value.
def InnerDecode(buffer, pos):
new_pos = pos + value_size
result = local_unpack(format, buffer[pos:new_pos])[0]
return (result, new_pos)
return _SimpleDecoder(wire_type, InnerDecode)
def _FloatDecoder():
"""Returns a decoder for a float field.
This code works around a bug in struct.unpack for non-finite 32-bit
floating-point values.
"""
local_unpack = struct.unpack
b = (lambda x:x) if _PY2 else lambda x:x.encode('latin1') ##PY25
def InnerDecode(buffer, pos):
# We expect a 32-bit value in little-endian byte order. Bit 1 is the sign
# bit, bits 2-9 represent the exponent, and bits 10-32 are the significand.
new_pos = pos + 4
float_bytes = buffer[pos:new_pos]
# If this value has all its exponent bits set, then it's non-finite.
# In Python 2.4, struct.unpack will convert it to a finite 64-bit value.
# To avoid that, we parse it specially.
if ((float_bytes[3:4] in b('\x7F\xFF')) ##PY25
##!PY25 if ((float_bytes[3:4] in b'\x7F\xFF')
and (float_bytes[2:3] >= b('\x80'))): ##PY25
##!PY25 and (float_bytes[2:3] >= b'\x80')):
# If at least one significand bit is set...
if float_bytes[0:3] != b('\x00\x00\x80'): ##PY25
##!PY25 if float_bytes[0:3] != b'\x00\x00\x80':
return (_NAN, new_pos)
# If sign bit is set...
if float_bytes[3:4] == b('\xFF'): ##PY25
##!PY25 if float_bytes[3:4] == b'\xFF':
return (_NEG_INF, new_pos)
return (_POS_INF, new_pos)
# Note that we expect someone up-stack to catch struct.error and convert
# it to _DecodeError -- this way we don't have to set up exception-
# handling blocks every time we parse one value.
result = local_unpack('<f', float_bytes)[0]
return (result, new_pos)
return _SimpleDecoder(wire_format.WIRETYPE_FIXED32, InnerDecode)
def _DoubleDecoder():
"""Returns a decoder for a double field.
This code works around a bug in struct.unpack for not-a-number.
"""
local_unpack = struct.unpack
b = (lambda x:x) if _PY2 else lambda x:x.encode('latin1') ##PY25
def InnerDecode(buffer, pos):
# We expect a 64-bit value in little-endian byte order. Bit 1 is the sign
# bit, bits 2-12 represent the exponent, and bits 13-64 are the significand.
new_pos = pos + 8
double_bytes = buffer[pos:new_pos]
# If this value has all its exponent bits set and at least one significand
# bit set, it's not a number. In Python 2.4, struct.unpack will treat it
# as inf or -inf. To avoid that, we treat it specially.
##!PY25 if ((double_bytes[7:8] in b'\x7F\xFF')
##!PY25 and (double_bytes[6:7] >= b'\xF0')
##!PY25 and (double_bytes[0:7] != b'\x00\x00\x00\x00\x00\x00\xF0')):
if ((double_bytes[7:8] in b('\x7F\xFF')) ##PY25
and (double_bytes[6:7] >= b('\xF0')) ##PY25
and (double_bytes[0:7] != b('\x00\x00\x00\x00\x00\x00\xF0'))): ##PY25
return (_NAN, new_pos)
# Note that we expect someone up-stack to catch struct.error and convert
# it to _DecodeError -- this way we don't have to set up exception-
# handling blocks every time we parse one value.
result = local_unpack('<d', double_bytes)[0]
return (result, new_pos)
return _SimpleDecoder(wire_format.WIRETYPE_FIXED64, InnerDecode)
def EnumDecoder(field_number, is_repeated, is_packed, key, new_default):
enum_type = key.enum_type
if is_packed:
local_DecodeVarint = _DecodeVarint
def DecodePackedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
(endpoint, pos) = local_DecodeVarint(buffer, pos)
endpoint += pos
if endpoint > end:
raise _DecodeError('Truncated message.')
while pos < endpoint:
value_start_pos = pos
(element, pos) = _DecodeSignedVarint32(buffer, pos)
if element in enum_type.values_by_number:
value.append(element)
else:
if not message._unknown_fields:
message._unknown_fields = []
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_VARINT)
message._unknown_fields.append(
(tag_bytes, buffer[value_start_pos:pos]))
if pos > endpoint:
if element in enum_type.values_by_number:
del value[-1] # Discard corrupt value.
else:
del message._unknown_fields[-1]
raise _DecodeError('Packed element was truncated.')
return pos
return DecodePackedField
elif is_repeated:
tag_bytes = encoder.TagBytes(field_number, wire_format.WIRETYPE_VARINT)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
(element, new_pos) = _DecodeSignedVarint32(buffer, pos)
if element in enum_type.values_by_number:
value.append(element)
else:
if not message._unknown_fields:
message._unknown_fields = []
message._unknown_fields.append(
(tag_bytes, buffer[pos:new_pos]))
# Predict that the next tag is another copy of the same repeated
# field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos >= end:
# Prediction failed. Return.
if new_pos > end:
raise _DecodeError('Truncated message.')
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
value_start_pos = pos
(enum_value, pos) = _DecodeSignedVarint32(buffer, pos)
if pos > end:
raise _DecodeError('Truncated message.')
if enum_value in enum_type.values_by_number:
field_dict[key] = enum_value
else:
if not message._unknown_fields:
message._unknown_fields = []
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_VARINT)
message._unknown_fields.append(
(tag_bytes, buffer[value_start_pos:pos]))
return pos
return DecodeField
# --------------------------------------------------------------------
Int32Decoder = _SimpleDecoder(
wire_format.WIRETYPE_VARINT, _DecodeSignedVarint32)
Int64Decoder = _SimpleDecoder(
wire_format.WIRETYPE_VARINT, _DecodeSignedVarint)
UInt32Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint32)
UInt64Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint)
SInt32Decoder = _ModifiedDecoder(
wire_format.WIRETYPE_VARINT, _DecodeVarint32, wire_format.ZigZagDecode)
SInt64Decoder = _ModifiedDecoder(
wire_format.WIRETYPE_VARINT, _DecodeVarint, wire_format.ZigZagDecode)
# Note that Python conveniently guarantees that when using the '<' prefix on
# formats, they will also have the same size across all platforms (as opposed
# to without the prefix, where their sizes depend on the C compiler's basic
# type sizes).
Fixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<I')
Fixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<Q')
SFixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<i')
SFixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<q')
FloatDecoder = _FloatDecoder()
DoubleDecoder = _DoubleDecoder()
BoolDecoder = _ModifiedDecoder(
wire_format.WIRETYPE_VARINT, _DecodeVarint, bool)
def StringDecoder(field_number, is_repeated, is_packed, key, new_default):
"""Returns a decoder for a string field."""
local_DecodeVarint = _DecodeVarint
local_unicode = unicode
def _ConvertToUnicode(byte_str):
try:
return local_unicode(byte_str, 'utf-8')
except UnicodeDecodeError, e:
# add more information to the error message and re-raise it.
e.reason = '%s in field: %s' % (e, key.full_name)
raise
assert not is_packed
if is_repeated:
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_LENGTH_DELIMITED)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated string.')
value.append(_ConvertToUnicode(buffer[pos:new_pos]))
# Predict that the next tag is another copy of the same repeated field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos == end:
# Prediction failed. Return.
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated string.')
field_dict[key] = _ConvertToUnicode(buffer[pos:new_pos])
return new_pos
return DecodeField
def BytesDecoder(field_number, is_repeated, is_packed, key, new_default):
"""Returns a decoder for a bytes field."""
local_DecodeVarint = _DecodeVarint
assert not is_packed
if is_repeated:
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_LENGTH_DELIMITED)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated string.')
value.append(buffer[pos:new_pos])
# Predict that the next tag is another copy of the same repeated field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos == end:
# Prediction failed. Return.
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated string.')
field_dict[key] = buffer[pos:new_pos]
return new_pos
return DecodeField
def GroupDecoder(field_number, is_repeated, is_packed, key, new_default):
"""Returns a decoder for a group field."""
end_tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_END_GROUP)
end_tag_len = len(end_tag_bytes)
assert not is_packed
if is_repeated:
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_START_GROUP)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
# Read sub-message.
pos = value.add()._InternalParse(buffer, pos, end)
# Read end tag.
new_pos = pos+end_tag_len
if buffer[pos:new_pos] != end_tag_bytes or new_pos > end:
raise _DecodeError('Missing group end tag.')
# Predict that the next tag is another copy of the same repeated field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos == end:
# Prediction failed. Return.
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
# Read sub-message.
pos = value._InternalParse(buffer, pos, end)
# Read end tag.
new_pos = pos+end_tag_len
if buffer[pos:new_pos] != end_tag_bytes or new_pos > end:
raise _DecodeError('Missing group end tag.')
return new_pos
return DecodeField
def MessageDecoder(field_number, is_repeated, is_packed, key, new_default):
"""Returns a decoder for a message field."""
local_DecodeVarint = _DecodeVarint
assert not is_packed
if is_repeated:
tag_bytes = encoder.TagBytes(field_number,
wire_format.WIRETYPE_LENGTH_DELIMITED)
tag_len = len(tag_bytes)
def DecodeRepeatedField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
while 1:
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
# Read length.
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated message.')
# Read sub-message.
if value.add()._InternalParse(buffer, pos, new_pos) != new_pos:
# The only reason _InternalParse would return early is if it
# encountered an end-group tag.
raise _DecodeError('Unexpected end-group tag.')
# Predict that the next tag is another copy of the same repeated field.
pos = new_pos + tag_len
if buffer[new_pos:pos] != tag_bytes or new_pos == end:
# Prediction failed. Return.
return new_pos
return DecodeRepeatedField
else:
def DecodeField(buffer, pos, end, message, field_dict):
value = field_dict.get(key)
if value is None:
value = field_dict.setdefault(key, new_default(message))
# Read length.
(size, pos) = local_DecodeVarint(buffer, pos)
new_pos = pos + size
if new_pos > end:
raise _DecodeError('Truncated message.')
# Read sub-message.
if value._InternalParse(buffer, pos, new_pos) != new_pos:
# The only reason _InternalParse would return early is if it encountered
# an end-group tag.
raise _DecodeError('Unexpected end-group tag.')
return new_pos
return DecodeField
# --------------------------------------------------------------------
MESSAGE_SET_ITEM_TAG = encoder.TagBytes(1, wire_format.WIRETYPE_START_GROUP)
def MessageSetItemDecoder(extensions_by_number):
"""Returns a decoder for a MessageSet item.
The parameter is the _extensions_by_number map for the message class.
The message set message looks like this:
message MessageSet {
repeated group Item = 1 {
required int32 type_id = 2;
required string message = 3;
}
}
"""
type_id_tag_bytes = encoder.TagBytes(2, wire_format.WIRETYPE_VARINT)
message_tag_bytes = encoder.TagBytes(3, wire_format.WIRETYPE_LENGTH_DELIMITED)
item_end_tag_bytes = encoder.TagBytes(1, wire_format.WIRETYPE_END_GROUP)
local_ReadTag = ReadTag
local_DecodeVarint = _DecodeVarint
local_SkipField = SkipField
def DecodeItem(buffer, pos, end, message, field_dict):
message_set_item_start = pos
type_id = -1
message_start = -1
message_end = -1
# Technically, type_id and message can appear in any order, so we need
# a little loop here.
while 1:
(tag_bytes, pos) = local_ReadTag(buffer, pos)
if tag_bytes == type_id_tag_bytes:
(type_id, pos) = local_DecodeVarint(buffer, pos)
elif tag_bytes == message_tag_bytes:
(size, message_start) = local_DecodeVarint(buffer, pos)
pos = message_end = message_start + size
elif tag_bytes == item_end_tag_bytes:
break
else:
pos = SkipField(buffer, pos, end, tag_bytes)
if pos == -1:
raise _DecodeError('Missing group end tag.')
if pos > end:
raise _DecodeError('Truncated message.')
if type_id == -1:
raise _DecodeError('MessageSet item missing type_id.')
if message_start == -1:
raise _DecodeError('MessageSet item missing message.')
extension = extensions_by_number.get(type_id)
if extension is not None:
value = field_dict.get(extension)
if value is None:
value = field_dict.setdefault(
extension, extension.message_type._concrete_class())
if value._InternalParse(buffer, message_start,message_end) != message_end:
# The only reason _InternalParse would return early is if it encountered
# an end-group tag.
raise _DecodeError('Unexpected end-group tag.')
else:
if not message._unknown_fields:
message._unknown_fields = []
message._unknown_fields.append((MESSAGE_SET_ITEM_TAG,
buffer[message_set_item_start:pos]))
return pos
return DecodeItem
# --------------------------------------------------------------------
# Optimization is not as heavy here because calls to SkipField() are rare,
# except for handling end-group tags.
def _SkipVarint(buffer, pos, end):
"""Skip a varint value. Returns the new position."""
# Previously ord(buffer[pos]) raised IndexError when pos is out of range.
# With this code, ord(b'') raises TypeError. Both are handled in
# python_message.py to generate a 'Truncated message' error.
while ord(buffer[pos:pos+1]) & 0x80:
pos += 1
pos += 1
if pos > end:
raise _DecodeError('Truncated message.')
return pos
def _SkipFixed64(buffer, pos, end):
"""Skip a fixed64 value. Returns the new position."""
pos += 8
if pos > end:
raise _DecodeError('Truncated message.')
return pos
def _SkipLengthDelimited(buffer, pos, end):
"""Skip a length-delimited value. Returns the new position."""
(size, pos) = _DecodeVarint(buffer, pos)
pos += size
if pos > end:
raise _DecodeError('Truncated message.')
return pos
def _SkipGroup(buffer, pos, end):
"""Skip sub-group. Returns the new position."""
while 1:
(tag_bytes, pos) = ReadTag(buffer, pos)
new_pos = SkipField(buffer, pos, end, tag_bytes)
if new_pos == -1:
return pos
pos = new_pos
def _EndGroup(buffer, pos, end):
"""Skipping an END_GROUP tag returns -1 to tell the parent loop to break."""
return -1
def _SkipFixed32(buffer, pos, end):
"""Skip a fixed32 value. Returns the new position."""
pos += 4
if pos > end:
raise _DecodeError('Truncated message.')
return pos
def _RaiseInvalidWireType(buffer, pos, end):
"""Skip function for unknown wire types. Raises an exception."""
raise _DecodeError('Tag had invalid wire type.')
def _FieldSkipper():
"""Constructs the SkipField function."""
WIRETYPE_TO_SKIPPER = [
_SkipVarint,
_SkipFixed64,
_SkipLengthDelimited,
_SkipGroup,
_EndGroup,
_SkipFixed32,
_RaiseInvalidWireType,
_RaiseInvalidWireType,
]
wiretype_mask = wire_format.TAG_TYPE_MASK
def SkipField(buffer, pos, end, tag_bytes):
"""Skips a field with the specified tag.
|pos| should point to the byte immediately after the tag.
Returns:
The new position (after the tag value), or -1 if the tag is an end-group
tag (in which case the calling loop should break).
"""
# The wire type is always in the first byte since varints are little-endian.
wire_type = ord(tag_bytes[0:1]) & wiretype_mask
return WIRETYPE_TO_SKIPPER[wire_type](buffer, pos, end)
return SkipField
SkipField = _FieldSkipper()
third_party/google/protobuf/internal/encoder.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
# Copyright 2009 Google Inc. All Rights Reserved.
"""Code for encoding protocol message primitives.
Contains the logic for encoding every logical protocol field type
into one of the 5 physical wire types.
This code is designed to push the Python interpreter's performance to the
limits.
The basic idea is that at startup time, for every field (i.e. every
FieldDescriptor) we construct two functions: a "sizer" and an "encoder". The
sizer takes a value of this field's type and computes its byte size. The
encoder takes a writer function and a value. It encodes the value into byte
strings and invokes the writer function to write those strings. Typically the
writer function is the write() method of a cStringIO.
We try to do as much work as possible when constructing the writer and the
sizer rather than when calling them. In particular:
* We copy any needed global functions to local variables, so that we do not need
to do costly global table lookups at runtime.
* Similarly, we try to do any attribute lookups at startup time if possible.
* Every field's tag is encoded to bytes at startup, since it can't change at
runtime.
* Whatever component of the field size we can compute at startup, we do.
* We *avoid* sharing code if doing so would make the code slower and not sharing
does not burden us too much. For example, encoders for repeated fields do
not just call the encoders for singular fields in a loop because this would
add an extra function call overhead for every loop iteration; instead, we
manually inline the single-value encoder into the loop.
* If a Python function lacks a return statement, Python actually generates
instructions to pop the result of the last statement off the stack, push
None onto the stack, and then return that. If we really don't care what
value is returned, then we can save two instructions by returning the
result of the last statement. It looks funny but it helps.
* We assume that type and bounds checking has happened at a higher level.
"""
__author__ = 'kenton@google.com (Kenton Varda)'
import struct
import sys ##PY25
_PY2 = sys.version_info[0] < 3 ##PY25
from google.protobuf.internal import wire_format
# This will overflow and thus become IEEE-754 "infinity". We would use
# "float('inf')" but it doesn't work on Windows pre-Python-2.6.
_POS_INF = 1e10000
_NEG_INF = -_POS_INF
def _VarintSize(value):
"""Compute the size of a varint value."""
if value <= 0x7f: return 1
if value <= 0x3fff: return 2
if value <= 0x1fffff: return 3
if value <= 0xfffffff: return 4
if value <= 0x7ffffffff: return 5
if value <= 0x3ffffffffff: return 6
if value <= 0x1ffffffffffff: return 7
if value <= 0xffffffffffffff: return 8
if value <= 0x7fffffffffffffff: return 9
return 10
def _SignedVarintSize(value):
"""Compute the size of a signed varint value."""
if value < 0: return 10
if value <= 0x7f: return 1
if value <= 0x3fff: return 2
if value <= 0x1fffff: return 3
if value <= 0xfffffff: return 4
if value <= 0x7ffffffff: return 5
if value <= 0x3ffffffffff: return 6
if value <= 0x1ffffffffffff: return 7
if value <= 0xffffffffffffff: return 8
if value <= 0x7fffffffffffffff: return 9
return 10
def _TagSize(field_number):
"""Returns the number of bytes required to serialize a tag with this field
number."""
# Just pass in type 0, since the type won't affect the tag+type size.
return _VarintSize(wire_format.PackTag(field_number, 0))
# --------------------------------------------------------------------
# In this section we define some generic sizers. Each of these functions
# takes parameters specific to a particular field type, e.g. int32 or fixed64.
# It returns another function which in turn takes parameters specific to a
# particular field, e.g. the field number and whether it is repeated or packed.
# Look at the next section to see how these are used.
def _SimpleSizer(compute_value_size):
"""A sizer which uses the function compute_value_size to compute the size of
each value. Typically compute_value_size is _VarintSize."""
def SpecificSizer(field_number, is_repeated, is_packed):
tag_size = _TagSize(field_number)
if is_packed:
local_VarintSize = _VarintSize
def PackedFieldSize(value):
result = 0
for element in value:
result += compute_value_size(element)
return result + local_VarintSize(result) + tag_size
return PackedFieldSize
elif is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
result += compute_value_size(element)
return result
return RepeatedFieldSize
else:
def FieldSize(value):
return tag_size + compute_value_size(value)
return FieldSize
return SpecificSizer
def _ModifiedSizer(compute_value_size, modify_value):
"""Like SimpleSizer, but modify_value is invoked on each value before it is
passed to compute_value_size. modify_value is typically ZigZagEncode."""
def SpecificSizer(field_number, is_repeated, is_packed):
tag_size = _TagSize(field_number)
if is_packed:
local_VarintSize = _VarintSize
def PackedFieldSize(value):
result = 0
for element in value:
result += compute_value_size(modify_value(element))
return result + local_VarintSize(result) + tag_size
return PackedFieldSize
elif is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
result += compute_value_size(modify_value(element))
return result
return RepeatedFieldSize
else:
def FieldSize(value):
return tag_size + compute_value_size(modify_value(value))
return FieldSize
return SpecificSizer
def _FixedSizer(value_size):
"""Like _SimpleSizer except for a fixed-size field. The input is the size
of one value."""
def SpecificSizer(field_number, is_repeated, is_packed):
tag_size = _TagSize(field_number)
if is_packed:
local_VarintSize = _VarintSize
def PackedFieldSize(value):
result = len(value) * value_size
return result + local_VarintSize(result) + tag_size
return PackedFieldSize
elif is_repeated:
element_size = value_size + tag_size
def RepeatedFieldSize(value):
return len(value) * element_size
return RepeatedFieldSize
else:
field_size = value_size + tag_size
def FieldSize(value):
return field_size
return FieldSize
return SpecificSizer
# ====================================================================
# Here we declare a sizer constructor for each field type. Each "sizer
# constructor" is a function that takes (field_number, is_repeated, is_packed)
# as parameters and returns a sizer, which in turn takes a field value as
# a parameter and returns its encoded size.
Int32Sizer = Int64Sizer = EnumSizer = _SimpleSizer(_SignedVarintSize)
UInt32Sizer = UInt64Sizer = _SimpleSizer(_VarintSize)
SInt32Sizer = SInt64Sizer = _ModifiedSizer(
_SignedVarintSize, wire_format.ZigZagEncode)
Fixed32Sizer = SFixed32Sizer = FloatSizer = _FixedSizer(4)
Fixed64Sizer = SFixed64Sizer = DoubleSizer = _FixedSizer(8)
BoolSizer = _FixedSizer(1)
def StringSizer(field_number, is_repeated, is_packed):
"""Returns a sizer for a string field."""
tag_size = _TagSize(field_number)
local_VarintSize = _VarintSize
local_len = len
assert not is_packed
if is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
l = local_len(element.encode('utf-8'))
result += local_VarintSize(l) + l
return result
return RepeatedFieldSize
else:
def FieldSize(value):
l = local_len(value.encode('utf-8'))
return tag_size + local_VarintSize(l) + l
return FieldSize
def BytesSizer(field_number, is_repeated, is_packed):
"""Returns a sizer for a bytes field."""
tag_size = _TagSize(field_number)
local_VarintSize = _VarintSize
local_len = len
assert not is_packed
if is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
l = local_len(element)
result += local_VarintSize(l) + l
return result
return RepeatedFieldSize
else:
def FieldSize(value):
l = local_len(value)
return tag_size + local_VarintSize(l) + l
return FieldSize
def GroupSizer(field_number, is_repeated, is_packed):
"""Returns a sizer for a group field."""
tag_size = _TagSize(field_number) * 2
assert not is_packed
if is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
result += element.ByteSize()
return result
return RepeatedFieldSize
else:
def FieldSize(value):
return tag_size + value.ByteSize()
return FieldSize
def MessageSizer(field_number, is_repeated, is_packed):
"""Returns a sizer for a message field."""
tag_size = _TagSize(field_number)
local_VarintSize = _VarintSize
assert not is_packed
if is_repeated:
def RepeatedFieldSize(value):
result = tag_size * len(value)
for element in value:
l = element.ByteSize()
result += local_VarintSize(l) + l
return result
return RepeatedFieldSize
else:
def FieldSize(value):
l = value.ByteSize()
return tag_size + local_VarintSize(l) + l
return FieldSize
# --------------------------------------------------------------------
# MessageSet is special.
def MessageSetItemSizer(field_number):
"""Returns a sizer for extensions of MessageSet.
The message set message looks like this:
message MessageSet {
repeated group Item = 1 {
required int32 type_id = 2;
required string message = 3;
}
}
"""
static_size = (_TagSize(1) * 2 + _TagSize(2) + _VarintSize(field_number) +
_TagSize(3))
local_VarintSize = _VarintSize
def FieldSize(value):
l = value.ByteSize()
return static_size + local_VarintSize(l) + l
return FieldSize
# ====================================================================
# Encoders!
def _VarintEncoder():
"""Return an encoder for a basic varint value (does not include tag)."""
local_chr = _PY2 and chr or (lambda x: bytes((x,))) ##PY25
##!PY25 local_chr = chr if bytes is str else lambda x: bytes((x,))
def EncodeVarint(write, value):
bits = value & 0x7f
value >>= 7
while value:
write(local_chr(0x80|bits))
bits = value & 0x7f
value >>= 7
return write(local_chr(bits))
return EncodeVarint
def _SignedVarintEncoder():
"""Return an encoder for a basic signed varint value (does not include
tag)."""
local_chr = _PY2 and chr or (lambda x: bytes((x,))) ##PY25
##!PY25 local_chr = chr if bytes is str else lambda x: bytes((x,))
def EncodeSignedVarint(write, value):
if value < 0:
value += (1 << 64)
bits = value & 0x7f
value >>= 7
while value:
write(local_chr(0x80|bits))
bits = value & 0x7f
value >>= 7
return write(local_chr(bits))
return EncodeSignedVarint
_EncodeVarint = _VarintEncoder()
_EncodeSignedVarint = _SignedVarintEncoder()
def _VarintBytes(value):
"""Encode the given integer as a varint and return the bytes. This is only
called at startup time so it doesn't need to be fast."""
pieces = []
_EncodeVarint(pieces.append, value)
return "".encode("latin1").join(pieces) ##PY25
##!PY25 return b"".join(pieces)
def TagBytes(field_number, wire_type):
"""Encode the given tag and return the bytes. Only called at startup."""
return _VarintBytes(wire_format.PackTag(field_number, wire_type))
# --------------------------------------------------------------------
# As with sizers (see above), we have a number of common encoder
# implementations.
def _SimpleEncoder(wire_type, encode_value, compute_value_size):
"""Return a constructor for an encoder for fields of a particular type.
Args:
wire_type: The field's wire type, for encoding tags.
encode_value: A function which encodes an individual value, e.g.
_EncodeVarint().
compute_value_size: A function which computes the size of an individual
value, e.g. _VarintSize().
"""
def SpecificEncoder(field_number, is_repeated, is_packed):
if is_packed:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
def EncodePackedField(write, value):
write(tag_bytes)
size = 0
for element in value:
size += compute_value_size(element)
local_EncodeVarint(write, size)
for element in value:
encode_value(write, element)
return EncodePackedField
elif is_repeated:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeRepeatedField(write, value):
for element in value:
write(tag_bytes)
encode_value(write, element)
return EncodeRepeatedField
else:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeField(write, value):
write(tag_bytes)
return encode_value(write, value)
return EncodeField
return SpecificEncoder
def _ModifiedEncoder(wire_type, encode_value, compute_value_size, modify_value):
"""Like SimpleEncoder but additionally invokes modify_value on every value
before passing it to encode_value. Usually modify_value is ZigZagEncode."""
def SpecificEncoder(field_number, is_repeated, is_packed):
if is_packed:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
def EncodePackedField(write, value):
write(tag_bytes)
size = 0
for element in value:
size += compute_value_size(modify_value(element))
local_EncodeVarint(write, size)
for element in value:
encode_value(write, modify_value(element))
return EncodePackedField
elif is_repeated:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeRepeatedField(write, value):
for element in value:
write(tag_bytes)
encode_value(write, modify_value(element))
return EncodeRepeatedField
else:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeField(write, value):
write(tag_bytes)
return encode_value(write, modify_value(value))
return EncodeField
return SpecificEncoder
def _StructPackEncoder(wire_type, format):
"""Return a constructor for an encoder for a fixed-width field.
Args:
wire_type: The field's wire type, for encoding tags.
format: The format string to pass to struct.pack().
"""
value_size = struct.calcsize(format)
def SpecificEncoder(field_number, is_repeated, is_packed):
local_struct_pack = struct.pack
if is_packed:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
def EncodePackedField(write, value):
write(tag_bytes)
local_EncodeVarint(write, len(value) * value_size)
for element in value:
write(local_struct_pack(format, element))
return EncodePackedField
elif is_repeated:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeRepeatedField(write, value):
for element in value:
write(tag_bytes)
write(local_struct_pack(format, element))
return EncodeRepeatedField
else:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeField(write, value):
write(tag_bytes)
return write(local_struct_pack(format, value))
return EncodeField
return SpecificEncoder
def _FloatingPointEncoder(wire_type, format):
"""Return a constructor for an encoder for float fields.
This is like StructPackEncoder, but catches errors that may be due to
passing non-finite floating-point values to struct.pack, and makes a
second attempt to encode those values.
Args:
wire_type: The field's wire type, for encoding tags.
format: The format string to pass to struct.pack().
"""
b = _PY2 and (lambda x:x) or (lambda x:x.encode('latin1')) ##PY25
value_size = struct.calcsize(format)
if value_size == 4:
def EncodeNonFiniteOrRaise(write, value):
# Remember that the serialized form uses little-endian byte order.
if value == _POS_INF:
write(b('\x00\x00\x80\x7F')) ##PY25
##!PY25 write(b'\x00\x00\x80\x7F')
elif value == _NEG_INF:
write(b('\x00\x00\x80\xFF')) ##PY25
##!PY25 write(b'\x00\x00\x80\xFF')
elif value != value: # NaN
write(b('\x00\x00\xC0\x7F')) ##PY25
##!PY25 write(b'\x00\x00\xC0\x7F')
else:
raise
elif value_size == 8:
def EncodeNonFiniteOrRaise(write, value):
if value == _POS_INF:
write(b('\x00\x00\x00\x00\x00\x00\xF0\x7F')) ##PY25
##!PY25 write(b'\x00\x00\x00\x00\x00\x00\xF0\x7F')
elif value == _NEG_INF:
write(b('\x00\x00\x00\x00\x00\x00\xF0\xFF')) ##PY25
##!PY25 write(b'\x00\x00\x00\x00\x00\x00\xF0\xFF')
elif value != value: # NaN
write(b('\x00\x00\x00\x00\x00\x00\xF8\x7F')) ##PY25
##!PY25 write(b'\x00\x00\x00\x00\x00\x00\xF8\x7F')
else:
raise
else:
raise ValueError('Can\'t encode floating-point values that are '
'%d bytes long (only 4 or 8)' % value_size)
def SpecificEncoder(field_number, is_repeated, is_packed):
local_struct_pack = struct.pack
if is_packed:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
def EncodePackedField(write, value):
write(tag_bytes)
local_EncodeVarint(write, len(value) * value_size)
for element in value:
# This try/except block is going to be faster than any code that
# we could write to check whether element is finite.
try:
write(local_struct_pack(format, element))
except SystemError:
EncodeNonFiniteOrRaise(write, element)
return EncodePackedField
elif is_repeated:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeRepeatedField(write, value):
for element in value:
write(tag_bytes)
try:
write(local_struct_pack(format, element))
except SystemError:
EncodeNonFiniteOrRaise(write, element)
return EncodeRepeatedField
else:
tag_bytes = TagBytes(field_number, wire_type)
def EncodeField(write, value):
write(tag_bytes)
try:
write(local_struct_pack(format, value))
except SystemError:
EncodeNonFiniteOrRaise(write, value)
return EncodeField
return SpecificEncoder
# ====================================================================
# Here we declare an encoder constructor for each field type. These work
# very similarly to sizer constructors, described earlier.
Int32Encoder = Int64Encoder = EnumEncoder = _SimpleEncoder(
wire_format.WIRETYPE_VARINT, _EncodeSignedVarint, _SignedVarintSize)
UInt32Encoder = UInt64Encoder = _SimpleEncoder(
wire_format.WIRETYPE_VARINT, _EncodeVarint, _VarintSize)
SInt32Encoder = SInt64Encoder = _ModifiedEncoder(
wire_format.WIRETYPE_VARINT, _EncodeVarint, _VarintSize,
wire_format.ZigZagEncode)
# Note that Python conveniently guarantees that when using the '<' prefix on
# formats, they will also have the same size across all platforms (as opposed
# to without the prefix, where their sizes depend on the C compiler's basic
# type sizes).
Fixed32Encoder = _StructPackEncoder(wire_format.WIRETYPE_FIXED32, '<I')
Fixed64Encoder = _StructPackEncoder(wire_format.WIRETYPE_FIXED64, '<Q')
SFixed32Encoder = _StructPackEncoder(wire_format.WIRETYPE_FIXED32, '<i')
SFixed64Encoder = _StructPackEncoder(wire_format.WIRETYPE_FIXED64, '<q')
FloatEncoder = _FloatingPointEncoder(wire_format.WIRETYPE_FIXED32, '<f')
DoubleEncoder = _FloatingPointEncoder(wire_format.WIRETYPE_FIXED64, '<d')
def BoolEncoder(field_number, is_repeated, is_packed):
"""Returns an encoder for a boolean field."""
##!PY25 false_byte = b'\x00'
##!PY25 true_byte = b'\x01'
false_byte = '\x00'.encode('latin1') ##PY25
true_byte = '\x01'.encode('latin1') ##PY25
if is_packed:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
def EncodePackedField(write, value):
write(tag_bytes)
local_EncodeVarint(write, len(value))
for element in value:
if element:
write(true_byte)
else:
write(false_byte)
return EncodePackedField
elif is_repeated:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_VARINT)
def EncodeRepeatedField(write, value):
for element in value:
write(tag_bytes)
if element:
write(true_byte)
else:
write(false_byte)
return EncodeRepeatedField
else:
tag_bytes = TagBytes(field_number, wire_format.WIRETYPE_VARINT)
def EncodeField(write, value):
write(tag_bytes)
if value:
return write(true_byte)
return write(false_byte)
return EncodeField
def StringEncoder(field_number, is_repeated, is_packed):
"""Returns an encoder for a string field."""
tag = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
local_len = len
assert not is_packed
if is_repeated:
def EncodeRepeatedField(write, value):
for element in value:
encoded = element.encode('utf-8')
write(tag)
local_EncodeVarint(write, local_len(encoded))
write(encoded)
return EncodeRepeatedField
else:
def EncodeField(write, value):
encoded = value.encode('utf-8')
write(tag)
local_EncodeVarint(write, local_len(encoded))
return write(encoded)
return EncodeField
def BytesEncoder(field_number, is_repeated, is_packed):
"""Returns an encoder for a bytes field."""
tag = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
local_len = len
assert not is_packed
if is_repeated:
def EncodeRepeatedField(write, value):
for element in value:
write(tag)
local_EncodeVarint(write, local_len(element))
write(element)
return EncodeRepeatedField
else:
def EncodeField(write, value):
write(tag)
local_EncodeVarint(write, local_len(value))
return write(value)
return EncodeField
def GroupEncoder(field_number, is_repeated, is_packed):
"""Returns an encoder for a group field."""
start_tag = TagBytes(field_number, wire_format.WIRETYPE_START_GROUP)
end_tag = TagBytes(field_number, wire_format.WIRETYPE_END_GROUP)
assert not is_packed
if is_repeated:
def EncodeRepeatedField(write, value):
for element in value:
write(start_tag)
element._InternalSerialize(write)
write(end_tag)
return EncodeRepeatedField
else:
def EncodeField(write, value):
write(start_tag)
value._InternalSerialize(write)
return write(end_tag)
return EncodeField
def MessageEncoder(field_number, is_repeated, is_packed):
"""Returns an encoder for a message field."""
tag = TagBytes(field_number, wire_format.WIRETYPE_LENGTH_DELIMITED)
local_EncodeVarint = _EncodeVarint
assert not is_packed
if is_repeated:
def EncodeRepeatedField(write, value):
for element in value:
write(tag)
local_EncodeVarint(write, element.ByteSize())
element._InternalSerialize(write)
return EncodeRepeatedField
else:
def EncodeField(write, value):
write(tag)
local_EncodeVarint(write, value.ByteSize())
return value._InternalSerialize(write)
return EncodeField
# --------------------------------------------------------------------
# As before, MessageSet is special.
def MessageSetItemEncoder(field_number):
"""Encoder for extensions of MessageSet.
The message set message looks like this:
message MessageSet {
repeated group Item = 1 {
required int32 type_id = 2;
required string message = 3;
}
}
"""
start_bytes = "".encode("latin1").join([ ##PY25
##!PY25 start_bytes = b"".join([
TagBytes(1, wire_format.WIRETYPE_START_GROUP),
TagBytes(2, wire_format.WIRETYPE_VARINT),
_VarintBytes(field_number),
TagBytes(3, wire_format.WIRETYPE_LENGTH_DELIMITED)])
end_bytes = TagBytes(1, wire_format.WIRETYPE_END_GROUP)
local_EncodeVarint = _EncodeVarint
def EncodeField(write, value):
write(start_bytes)
local_EncodeVarint(write, value.ByteSize())
value._InternalSerialize(write)
return write(end_bytes)
return EncodeField
third_party/google/protobuf/internal/enum_type_wrapper.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""A simple wrapper around enum types to expose utility functions.
Instances are created as properties with the same name as the enum they wrap
on proto classes. For usage, see:
reflection_test.py
"""
__author__ = 'rabsatt@google.com (Kevin Rabsatt)'
class EnumTypeWrapper(object):
"""A utility for finding the names of enum values."""
DESCRIPTOR = None
def __init__(self, enum_type):
"""Inits EnumTypeWrapper with an EnumDescriptor."""
self._enum_type = enum_type
self.DESCRIPTOR = enum_type;
def Name(self, number):
"""Returns a string containing the name of an enum value."""
if number in self._enum_type.values_by_number:
return self._enum_type.values_by_number[number].name
raise ValueError('Enum %s has no name defined for value %d' % (
self._enum_type.name, number))
def Value(self, name):
"""Returns the value coresponding to the given enum name."""
if name in self._enum_type.values_by_name:
return self._enum_type.values_by_name[name].number
raise ValueError('Enum %s has no value defined for name %s' % (
self._enum_type.name, name))
def keys(self):
"""Return a list of the string names in the enum.
These are returned in the order they were defined in the .proto file.
"""
return [value_descriptor.name
for value_descriptor in self._enum_type.values]
def values(self):
"""Return a list of the integer values in the enum.
These are returned in the order they were defined in the .proto file.
"""
return [value_descriptor.number
for value_descriptor in self._enum_type.values]
def items(self):
"""Return a list of the (name, value) pairs of the enum.
These are returned in the order they were defined in the .proto file.
"""
return [(value_descriptor.name, value_descriptor.number)
for value_descriptor in self._enum_type.values]
third_party/google/protobuf/internal/message_listener.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Defines a listener interface for observing certain
state transitions on Message objects.
Also defines a null implementation of this interface.
"""
__author__ = 'robinson@google.com (Will Robinson)'
class MessageListener(object):
"""Listens for modifications made to a message. Meant to be registered via
Message._SetListener().
Attributes:
dirty: If True, then calling Modified() would be a no-op. This can be
used to avoid these calls entirely in the common case.
"""
def Modified(self):
"""Called every time the message is modified in such a way that the parent
message may need to be updated. This currently means either:
(a) The message was modified for the first time, so the parent message
should henceforth mark the message as present.
(b) The message's cached byte size became dirty -- i.e. the message was
modified for the first time after a previous call to ByteSize().
Therefore the parent should also mark its byte size as dirty.
Note that (a) implies (b), since new objects start out with a client cached
size (zero). However, we document (a) explicitly because it is important.
Modified() will *only* be called in response to one of these two events --
not every time the sub-message is modified.
Note that if the listener's |dirty| attribute is true, then calling
Modified at the moment would be a no-op, so it can be skipped. Performance-
sensitive callers should check this attribute directly before calling since
it will be true most of the time.
"""
raise NotImplementedError
class NullMessageListener(object):
"""No-op MessageListener implementation."""
def Modified(self):
pass
third_party/google/protobuf/internal/python_message.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
# Keep it Python2.5 compatible for GAE.
#
# Copyright 2007 Google Inc. All Rights Reserved.
#
# This code is meant to work on Python 2.4 and above only.
#
# TODO(robinson): Helpers for verbose, common checks like seeing if a
# descriptor's cpp_type is CPPTYPE_MESSAGE.
"""Contains a metaclass and helper functions used to create
protocol message classes from Descriptor objects at runtime.
Recall that a metaclass is the "type" of a class.
(A class is to a metaclass what an instance is to a class.)
In this case, we use the GeneratedProtocolMessageType metaclass
to inject all the useful functionality into the classes
output by the protocol compiler at compile-time.
The upshot of all this is that the real implementation
details for ALL pure-Python protocol buffers are *here in
this file*.
"""
__author__ = 'robinson@google.com (Will Robinson)'
import sys
if sys.version_info[0] < 3:
try:
from cStringIO import StringIO as BytesIO
except ImportError:
from StringIO import StringIO as BytesIO
import copy_reg as copyreg
else:
from io import BytesIO
import copyreg
import struct
import weakref
# We use "as" to avoid name collisions with variables.
from google.protobuf.internal import containers
from google.protobuf.internal import decoder
from google.protobuf.internal import encoder
from google.protobuf.internal import enum_type_wrapper
from google.protobuf.internal import message_listener as message_listener_mod
from google.protobuf.internal import type_checkers
from google.protobuf.internal import wire_format
from google.protobuf import descriptor as descriptor_mod
from google.protobuf import message as message_mod
from google.protobuf import text_format
_FieldDescriptor = descriptor_mod.FieldDescriptor
def NewMessage(bases, descriptor, dictionary):
_AddClassAttributesForNestedExtensions(descriptor, dictionary)
_AddSlots(descriptor, dictionary)
return bases
def InitMessage(descriptor, cls):
cls._decoders_by_tag = {}
cls._extensions_by_name = {}
cls._extensions_by_number = {}
if (descriptor.has_options and
descriptor.GetOptions().message_set_wire_format):
cls._decoders_by_tag[decoder.MESSAGE_SET_ITEM_TAG] = (
decoder.MessageSetItemDecoder(cls._extensions_by_number))
# Attach stuff to each FieldDescriptor for quick lookup later on.
for field in descriptor.fields:
_AttachFieldHelpers(cls, field)
_AddEnumValues(descriptor, cls)
_AddInitMethod(descriptor, cls)
_AddPropertiesForFields(descriptor, cls)
_AddPropertiesForExtensions(descriptor, cls)
_AddStaticMethods(cls)
_AddMessageMethods(descriptor, cls)
_AddPrivateHelperMethods(descriptor, cls)
copyreg.pickle(cls, lambda obj: (cls, (), obj.__getstate__()))
# Stateless helpers for GeneratedProtocolMessageType below.
# Outside clients should not access these directly.
#
# I opted not to make any of these methods on the metaclass, to make it more
# clear that I'm not really using any state there and to keep clients from
# thinking that they have direct access to these construction helpers.
def _PropertyName(proto_field_name):
"""Returns the name of the public property attribute which
clients can use to get and (in some cases) set the value
of a protocol message field.
Args:
proto_field_name: The protocol message field name, exactly
as it appears (or would appear) in a .proto file.
"""
# TODO(robinson): Escape Python keywords (e.g., yield), and test this support.
# nnorwitz makes my day by writing:
# """
# FYI. See the keyword module in the stdlib. This could be as simple as:
#
# if keyword.iskeyword(proto_field_name):
# return proto_field_name + "_"
# return proto_field_name
# """
# Kenton says: The above is a BAD IDEA. People rely on being able to use
# getattr() and setattr() to reflectively manipulate field values. If we
# rename the properties, then every such user has to also make sure to apply
# the same transformation. Note that currently if you name a field "yield",
# you can still access it just fine using getattr/setattr -- it's not even
# that cumbersome to do so.
# TODO(kenton): Remove this method entirely if/when everyone agrees with my
# position.
return proto_field_name
def _VerifyExtensionHandle(message, extension_handle):
"""Verify that the given extension handle is valid."""
if not isinstance(extension_handle, _FieldDescriptor):
raise KeyError('HasExtension() expects an extension handle, got: %s' %
extension_handle)
if not extension_handle.is_extension:
raise KeyError('"%s" is not an extension.' % extension_handle.full_name)
if not extension_handle.containing_type:
raise KeyError('"%s" is missing a containing_type.'
% extension_handle.full_name)
if extension_handle.containing_type is not message.DESCRIPTOR:
raise KeyError('Extension "%s" extends message type "%s", but this '
'message is of type "%s".' %
(extension_handle.full_name,
extension_handle.containing_type.full_name,
message.DESCRIPTOR.full_name))
def _AddSlots(message_descriptor, dictionary):
"""Adds a __slots__ entry to dictionary, containing the names of all valid
attributes for this message type.
Args:
message_descriptor: A Descriptor instance describing this message type.
dictionary: Class dictionary to which we'll add a '__slots__' entry.
"""
dictionary['__slots__'] = ['_cached_byte_size',
'_cached_byte_size_dirty',
'_fields',
'_unknown_fields',
'_is_present_in_parent',
'_listener',
'_listener_for_children',
'__weakref__',
'_oneofs']
def _IsMessageSetExtension(field):
return (field.is_extension and
field.containing_type.has_options and
field.containing_type.GetOptions().message_set_wire_format and
field.type == _FieldDescriptor.TYPE_MESSAGE and
field.message_type == field.extension_scope and
field.label == _FieldDescriptor.LABEL_OPTIONAL)
def _AttachFieldHelpers(cls, field_descriptor):
is_repeated = (field_descriptor.label == _FieldDescriptor.LABEL_REPEATED)
is_packed = (field_descriptor.has_options and
field_descriptor.GetOptions().packed)
if _IsMessageSetExtension(field_descriptor):
field_encoder = encoder.MessageSetItemEncoder(field_descriptor.number)
sizer = encoder.MessageSetItemSizer(field_descriptor.number)
else:
field_encoder = type_checkers.TYPE_TO_ENCODER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
sizer = type_checkers.TYPE_TO_SIZER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed)
field_descriptor._encoder = field_encoder
field_descriptor._sizer = sizer
field_descriptor._default_constructor = _DefaultValueConstructorForField(
field_descriptor)
def AddDecoder(wiretype, is_packed):
tag_bytes = encoder.TagBytes(field_descriptor.number, wiretype)
cls._decoders_by_tag[tag_bytes] = (
type_checkers.TYPE_TO_DECODER[field_descriptor.type](
field_descriptor.number, is_repeated, is_packed,
field_descriptor, field_descriptor._default_constructor))
AddDecoder(type_checkers.FIELD_TYPE_TO_WIRE_TYPE[field_descriptor.type],
False)
if is_repeated and wire_format.IsTypePackable(field_descriptor.type):
# To support wire compatibility of adding packed = true, add a decoder for
# packed values regardless of the field's options.
AddDecoder(wire_format.WIRETYPE_LENGTH_DELIMITED, True)
def _AddClassAttributesForNestedExtensions(descriptor, dictionary):
extension_dict = descriptor.extensions_by_name
for extension_name, extension_field in extension_dict.iteritems():
assert extension_name not in dictionary
dictionary[extension_name] = extension_field
def _AddEnumValues(descriptor, cls):
"""Sets class-level attributes for all enum fields defined in this message.
Also exporting a class-level object that can name enum values.
Args:
descriptor: Descriptor object for this message type.
cls: Class we're constructing for this message type.
"""
for enum_type in descriptor.enum_types:
setattr(cls, enum_type.name, enum_type_wrapper.EnumTypeWrapper(enum_type))
for enum_value in enum_type.values:
setattr(cls, enum_value.name, enum_value.number)
def _DefaultValueConstructorForField(field):
"""Returns a function which returns a default value for a field.
Args:
field: FieldDescriptor object for this field.
The returned function has one argument:
message: Message instance containing this field, or a weakref proxy
of same.
That function in turn returns a default value for this field. The default
value may refer back to |message| via a weak reference.
"""
if field.label == _FieldDescriptor.LABEL_REPEATED:
if field.has_default_value and field.default_value != []:
raise ValueError('Repeated field default value not empty list: %s' % (
field.default_value))
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
# We can't look at _concrete_class yet since it might not have
# been set. (Depends on order in which we initialize the classes).
message_type = field.message_type
def MakeRepeatedMessageDefault(message):
return containers.RepeatedCompositeFieldContainer(
message._listener_for_children, field.message_type)
return MakeRepeatedMessageDefault
else:
type_checker = type_checkers.GetTypeChecker(field)
def MakeRepeatedScalarDefault(message):
return containers.RepeatedScalarFieldContainer(
message._listener_for_children, type_checker)
return MakeRepeatedScalarDefault
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
# _concrete_class may not yet be initialized.
message_type = field.message_type
def MakeSubMessageDefault(message):
result = message_type._concrete_class()
result._SetListener(message._listener_for_children)
return result
return MakeSubMessageDefault
def MakeScalarDefault(message):
# TODO(protobuf-team): This may be broken since there may not be
# default_value. Combine with has_default_value somehow.
return field.default_value
return MakeScalarDefault
def _AddInitMethod(message_descriptor, cls):
"""Adds an __init__ method to cls."""
fields = message_descriptor.fields
def init(self, **kwargs):
self._cached_byte_size = 0
self._cached_byte_size_dirty = len(kwargs) > 0
self._fields = {}
# Contains a mapping from oneof field descriptors to the descriptor
# of the currently set field in that oneof field.
self._oneofs = {}
# _unknown_fields is () when empty for efficiency, and will be turned into
# a list if fields are added.
self._unknown_fields = ()
self._is_present_in_parent = False
self._listener = message_listener_mod.NullMessageListener()
self._listener_for_children = _Listener(self)
for field_name, field_value in kwargs.iteritems():
field = _GetFieldByName(message_descriptor, field_name)
if field is None:
raise TypeError("%s() got an unexpected keyword argument '%s'" %
(message_descriptor.name, field_name))
if field.label == _FieldDescriptor.LABEL_REPEATED:
copy = field._default_constructor(self)
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE: # Composite
for val in field_value:
copy.add().MergeFrom(val)
else: # Scalar
copy.extend(field_value)
self._fields[field] = copy
elif field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
copy = field._default_constructor(self)
copy.MergeFrom(field_value)
self._fields[field] = copy
else:
setattr(self, field_name, field_value)
init.__module__ = None
init.__doc__ = None
cls.__init__ = init
def _GetFieldByName(message_descriptor, field_name):
"""Returns a field descriptor by field name.
Args:
message_descriptor: A Descriptor describing all fields in message.
field_name: The name of the field to retrieve.
Returns:
The field descriptor associated with the field name.
"""
try:
return message_descriptor.fields_by_name[field_name]
except KeyError:
raise ValueError('Protocol message has no "%s" field.' % field_name)
def _AddPropertiesForFields(descriptor, cls):
"""Adds properties for all fields in this protocol message type."""
for field in descriptor.fields:
_AddPropertiesForField(field, cls)
if descriptor.is_extendable:
# _ExtensionDict is just an adaptor with no state so we allocate a new one
# every time it is accessed.
cls.Extensions = property(lambda self: _ExtensionDict(self))
def _AddPropertiesForField(field, cls):
"""Adds a public property for a protocol message field.
Clients can use this property to get and (in the case
of non-repeated scalar fields) directly set the value
of a protocol message field.
Args:
field: A FieldDescriptor for this field.
cls: The class we're constructing.
"""
# Catch it if we add other types that we should
# handle specially here.
assert _FieldDescriptor.MAX_CPPTYPE == 10
constant_name = field.name.upper() + "_FIELD_NUMBER"
setattr(cls, constant_name, field.number)
if field.label == _FieldDescriptor.LABEL_REPEATED:
_AddPropertiesForRepeatedField(field, cls)
elif field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
_AddPropertiesForNonRepeatedCompositeField(field, cls)
else:
_AddPropertiesForNonRepeatedScalarField(field, cls)
def _AddPropertiesForRepeatedField(field, cls):
"""Adds a public property for a "repeated" protocol message field. Clients
can use this property to get the value of the field, which will be either a
_RepeatedScalarFieldContainer or _RepeatedCompositeFieldContainer (see
below).
Note that when clients add values to these containers, we perform
type-checking in the case of repeated scalar fields, and we also set any
necessary "has" bits as a side-effect.
Args:
field: A FieldDescriptor for this field.
cls: The class we're constructing.
"""
proto_field_name = field.name
property_name = _PropertyName(proto_field_name)
def getter(self):
field_value = self._fields.get(field)
if field_value is None:
# Construct a new object to represent this field.
field_value = field._default_constructor(self)
# Atomically check if another thread has preempted us and, if not, swap
# in the new object we just created. If someone has preempted us, we
# take that object and discard ours.
# WARNING: We are relying on setdefault() being atomic. This is true
# in CPython but we haven't investigated others. This warning appears
# in several other locations in this file.
field_value = self._fields.setdefault(field, field_value)
return field_value
getter.__module__ = None
getter.__doc__ = 'Getter for %s.' % proto_field_name
# We define a setter just so we can throw an exception with a more
# helpful error message.
def setter(self, new_value):
raise AttributeError('Assignment not allowed to repeated field '
'"%s" in protocol message object.' % proto_field_name)
doc = 'Magic attribute generated for "%s" proto field.' % proto_field_name
setattr(cls, property_name, property(getter, setter, doc=doc))
def _AddPropertiesForNonRepeatedScalarField(field, cls):
"""Adds a public property for a nonrepeated, scalar protocol message field.
Clients can use this property to get and directly set the value of the field.
Note that when the client sets the value of a field by using this property,
all necessary "has" bits are set as a side-effect, and we also perform
type-checking.
Args:
field: A FieldDescriptor for this field.
cls: The class we're constructing.
"""
proto_field_name = field.name
property_name = _PropertyName(proto_field_name)
type_checker = type_checkers.GetTypeChecker(field)
default_value = field.default_value
valid_values = set()
def getter(self):
# TODO(protobuf-team): This may be broken since there may not be
# default_value. Combine with has_default_value somehow.
return self._fields.get(field, default_value)
getter.__module__ = None
getter.__doc__ = 'Getter for %s.' % proto_field_name
def field_setter(self, new_value):
# pylint: disable=protected-access
self._fields[field] = type_checker.CheckValue(new_value)
# Check _cached_byte_size_dirty inline to improve performance, since scalar
# setters are called frequently.
if not self._cached_byte_size_dirty:
self._Modified()
if field.containing_oneof is not None:
def setter(self, new_value):
field_setter(self, new_value)
self._UpdateOneofState(field)
else:
setter = field_setter
setter.__module__ = None
setter.__doc__ = 'Setter for %s.' % proto_field_name
# Add a property to encapsulate the getter/setter.
doc = 'Magic attribute generated for "%s" proto field.' % proto_field_name
setattr(cls, property_name, property(getter, setter, doc=doc))
def _AddPropertiesForNonRepeatedCompositeField(field, cls):
"""Adds a public property for a nonrepeated, composite protocol message field.
A composite field is a "group" or "message" field.
Clients can use this property to get the value of the field, but cannot
assign to the property directly.
Args:
field: A FieldDescriptor for this field.
cls: The class we're constructing.
"""
# TODO(robinson): Remove duplication with similar method
# for non-repeated scalars.
proto_field_name = field.name
property_name = _PropertyName(proto_field_name)
# TODO(komarek): Can anyone explain to me why we cache the message_type this
# way, instead of referring to field.message_type inside of getter(self)?
# What if someone sets message_type later on (which makes for simpler
# dyanmic proto descriptor and class creation code).
message_type = field.message_type
def getter(self):
field_value = self._fields.get(field)
if field_value is None:
# Construct a new object to represent this field.
field_value = message_type._concrete_class() # use field.message_type?
field_value._SetListener(
_OneofListener(self, field)
if field.containing_oneof is not None
else self._listener_for_children)
# Atomically check if another thread has preempted us and, if not, swap
# in the new object we just created. If someone has preempted us, we
# take that object and discard ours.
# WARNING: We are relying on setdefault() being atomic. This is true
# in CPython but we haven't investigated others. This warning appears
# in several other locations in this file.
field_value = self._fields.setdefault(field, field_value)
return field_value
getter.__module__ = None
getter.__doc__ = 'Getter for %s.' % proto_field_name
# We define a setter just so we can throw an exception with a more
# helpful error message.
def setter(self, new_value):
raise AttributeError('Assignment not allowed to composite field '
'"%s" in protocol message object.' % proto_field_name)
# Add a property to encapsulate the getter.
doc = 'Magic attribute generated for "%s" proto field.' % proto_field_name
setattr(cls, property_name, property(getter, setter, doc=doc))
def _AddPropertiesForExtensions(descriptor, cls):
"""Adds properties for all fields in this protocol message type."""
extension_dict = descriptor.extensions_by_name
for extension_name, extension_field in extension_dict.iteritems():
constant_name = extension_name.upper() + "_FIELD_NUMBER"
setattr(cls, constant_name, extension_field.number)
def _AddStaticMethods(cls):
# TODO(robinson): This probably needs to be thread-safe(?)
def RegisterExtension(extension_handle):
extension_handle.containing_type = cls.DESCRIPTOR
_AttachFieldHelpers(cls, extension_handle)
# Try to insert our extension, failing if an extension with the same number
# already exists.
actual_handle = cls._extensions_by_number.setdefault(
extension_handle.number, extension_handle)
if actual_handle is not extension_handle:
raise AssertionError(
'Extensions "%s" and "%s" both try to extend message type "%s" with '
'field number %d.' %
(extension_handle.full_name, actual_handle.full_name,
cls.DESCRIPTOR.full_name, extension_handle.number))
cls._extensions_by_name[extension_handle.full_name] = extension_handle
handle = extension_handle # avoid line wrapping
if _IsMessageSetExtension(handle):
# MessageSet extension. Also register under type name.
cls._extensions_by_name[
extension_handle.message_type.full_name] = extension_handle
cls.RegisterExtension = staticmethod(RegisterExtension)
def FromString(s):
message = cls()
message.MergeFromString(s)
return message
cls.FromString = staticmethod(FromString)
def _IsPresent(item):
"""Given a (FieldDescriptor, value) tuple from _fields, return true if the
value should be included in the list returned by ListFields()."""
if item[0].label == _FieldDescriptor.LABEL_REPEATED:
return bool(item[1])
elif item[0].cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
return item[1]._is_present_in_parent
else:
return True
def _AddListFieldsMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def ListFields(self):
all_fields = [item for item in self._fields.iteritems() if _IsPresent(item)]
all_fields.sort(key = lambda item: item[0].number)
return all_fields
cls.ListFields = ListFields
def _AddHasFieldMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
singular_fields = {}
for field in message_descriptor.fields:
if field.label != _FieldDescriptor.LABEL_REPEATED:
singular_fields[field.name] = field
# Fields inside oneofs are never repeated (enforced by the compiler).
for field in message_descriptor.oneofs:
singular_fields[field.name] = field
def HasField(self, field_name):
try:
field = singular_fields[field_name]
except KeyError:
raise ValueError(
'Protocol message has no singular "%s" field.' % field_name)
if isinstance(field, descriptor_mod.OneofDescriptor):
try:
return HasField(self, self._oneofs[field].name)
except KeyError:
return False
else:
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
value = self._fields.get(field)
return value is not None and value._is_present_in_parent
else:
return field in self._fields
cls.HasField = HasField
def _AddClearFieldMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def ClearField(self, field_name):
try:
field = message_descriptor.fields_by_name[field_name]
except KeyError:
try:
field = message_descriptor.oneofs_by_name[field_name]
if field in self._oneofs:
field = self._oneofs[field]
else:
return
except KeyError:
raise ValueError('Protocol message has no "%s" field.' % field_name)
if field in self._fields:
# Note: If the field is a sub-message, its listener will still point
# at us. That's fine, because the worst than can happen is that it
# will call _Modified() and invalidate our byte size. Big deal.
del self._fields[field]
if self._oneofs.get(field.containing_oneof, None) is field:
del self._oneofs[field.containing_oneof]
# Always call _Modified() -- even if nothing was changed, this is
# a mutating method, and thus calling it should cause the field to become
# present in the parent message.
self._Modified()
cls.ClearField = ClearField
def _AddClearExtensionMethod(cls):
"""Helper for _AddMessageMethods()."""
def ClearExtension(self, extension_handle):
_VerifyExtensionHandle(self, extension_handle)
# Similar to ClearField(), above.
if extension_handle in self._fields:
del self._fields[extension_handle]
self._Modified()
cls.ClearExtension = ClearExtension
def _AddClearMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def Clear(self):
# Clear fields.
self._fields = {}
self._unknown_fields = ()
self._Modified()
cls.Clear = Clear
def _AddHasExtensionMethod(cls):
"""Helper for _AddMessageMethods()."""
def HasExtension(self, extension_handle):
_VerifyExtensionHandle(self, extension_handle)
if extension_handle.label == _FieldDescriptor.LABEL_REPEATED:
raise KeyError('"%s" is repeated.' % extension_handle.full_name)
if extension_handle.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
value = self._fields.get(extension_handle)
return value is not None and value._is_present_in_parent
else:
return extension_handle in self._fields
cls.HasExtension = HasExtension
def _AddEqualsMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def __eq__(self, other):
if (not isinstance(other, message_mod.Message) or
other.DESCRIPTOR != self.DESCRIPTOR):
return False
if self is other:
return True
if not self.ListFields() == other.ListFields():
return False
# Sort unknown fields because their order shouldn't affect equality test.
unknown_fields = list(self._unknown_fields)
unknown_fields.sort()
other_unknown_fields = list(other._unknown_fields)
other_unknown_fields.sort()
return unknown_fields == other_unknown_fields
cls.__eq__ = __eq__
def _AddStrMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def __str__(self):
return text_format.MessageToString(self)
cls.__str__ = __str__
def _AddUnicodeMethod(unused_message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def __unicode__(self):
return text_format.MessageToString(self, as_utf8=True).decode('utf-8')
cls.__unicode__ = __unicode__
def _AddSetListenerMethod(cls):
"""Helper for _AddMessageMethods()."""
def SetListener(self, listener):
if listener is None:
self._listener = message_listener_mod.NullMessageListener()
else:
self._listener = listener
cls._SetListener = SetListener
def _BytesForNonRepeatedElement(value, field_number, field_type):
"""Returns the number of bytes needed to serialize a non-repeated element.
The returned byte count includes space for tag information and any
other additional space associated with serializing value.
Args:
value: Value we're serializing.
field_number: Field number of this value. (Since the field number
is stored as part of a varint-encoded tag, this has an impact
on the total bytes required to serialize the value).
field_type: The type of the field. One of the TYPE_* constants
within FieldDescriptor.
"""
try:
fn = type_checkers.TYPE_TO_BYTE_SIZE_FN[field_type]
return fn(field_number, value)
except KeyError:
raise message_mod.EncodeError('Unrecognized field type: %d' % field_type)
def _AddByteSizeMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def ByteSize(self):
if not self._cached_byte_size_dirty:
return self._cached_byte_size
size = 0
for field_descriptor, field_value in self.ListFields():
size += field_descriptor._sizer(field_value)
for tag_bytes, value_bytes in self._unknown_fields:
size += len(tag_bytes) + len(value_bytes)
self._cached_byte_size = size
self._cached_byte_size_dirty = False
self._listener_for_children.dirty = False
return size
cls.ByteSize = ByteSize
def _AddSerializeToStringMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def SerializeToString(self):
# Check if the message has all of its required fields set.
errors = []
if not self.IsInitialized():
raise message_mod.EncodeError(
'Message %s is missing required fields: %s' % (
self.DESCRIPTOR.full_name, ','.join(self.FindInitializationErrors())))
return self.SerializePartialToString()
cls.SerializeToString = SerializeToString
def _AddSerializePartialToStringMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def SerializePartialToString(self):
out = BytesIO()
self._InternalSerialize(out.write)
return out.getvalue()
cls.SerializePartialToString = SerializePartialToString
def InternalSerialize(self, write_bytes):
for field_descriptor, field_value in self.ListFields():
field_descriptor._encoder(write_bytes, field_value)
for tag_bytes, value_bytes in self._unknown_fields:
write_bytes(tag_bytes)
write_bytes(value_bytes)
cls._InternalSerialize = InternalSerialize
def _AddMergeFromStringMethod(message_descriptor, cls):
"""Helper for _AddMessageMethods()."""
def MergeFromString(self, serialized):
length = len(serialized)
try:
if self._InternalParse(serialized, 0, length) != length:
# The only reason _InternalParse would return early is if it
# encountered an end-group tag.
raise message_mod.DecodeError('Unexpected end-group tag.')
except (IndexError, TypeError):
# Now ord(buf[p:p+1]) == ord('') gets TypeError.
raise message_mod.DecodeError('Truncated message.')
except struct.error, e:
raise message_mod.DecodeError(e)
return length # Return this for legacy reasons.
cls.MergeFromString = MergeFromString
local_ReadTag = decoder.ReadTag
local_SkipField = decoder.SkipField
decoders_by_tag = cls._decoders_by_tag
def InternalParse(self, buffer, pos, end):
self._Modified()
field_dict = self._fields
unknown_field_list = self._unknown_fields
while pos != end:
(tag_bytes, new_pos) = local_ReadTag(buffer, pos)
field_decoder = decoders_by_tag.get(tag_bytes)
if field_decoder is None:
value_start_pos = new_pos
new_pos = local_SkipField(buffer, new_pos, end, tag_bytes)
if new_pos == -1:
return pos
if not unknown_field_list:
unknown_field_list = self._unknown_fields = []
unknown_field_list.append((tag_bytes, buffer[value_start_pos:new_pos]))
pos = new_pos
else:
pos = field_decoder(buffer, new_pos, end, self, field_dict)
return pos
cls._InternalParse = InternalParse
def _AddIsInitializedMethod(message_descriptor, cls):
"""Adds the IsInitialized and FindInitializationError methods to the
protocol message class."""
required_fields = [field for field in message_descriptor.fields
if field.label == _FieldDescriptor.LABEL_REQUIRED]
def IsInitialized(self, errors=None):
"""Checks if all required fields of a message are set.
Args:
errors: A list which, if provided, will be populated with the field
paths of all missing required fields.
Returns:
True iff the specified message has all required fields set.
"""
# Performance is critical so we avoid HasField() and ListFields().
for field in required_fields:
if (field not in self._fields or
(field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE and
not self._fields[field]._is_present_in_parent)):
if errors is not None:
errors.extend(self.FindInitializationErrors())
return False
for field, value in list(self._fields.items()): # dict can change size!
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
if field.label == _FieldDescriptor.LABEL_REPEATED:
for element in value:
if not element.IsInitialized():
if errors is not None:
errors.extend(self.FindInitializationErrors())
return False
elif value._is_present_in_parent and not value.IsInitialized():
if errors is not None:
errors.extend(self.FindInitializationErrors())
return False
return True
cls.IsInitialized = IsInitialized
def FindInitializationErrors(self):
"""Finds required fields which are not initialized.
Returns:
A list of strings. Each string is a path to an uninitialized field from
the top-level message, e.g. "foo.bar[5].baz".
"""
errors = [] # simplify things
for field in required_fields:
if not self.HasField(field.name):
errors.append(field.name)
for field, value in self.ListFields():
if field.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
if field.is_extension:
name = "(%s)" % field.full_name
else:
name = field.name
if field.label == _FieldDescriptor.LABEL_REPEATED:
for i in xrange(len(value)):
element = value[i]
prefix = "%s[%d]." % (name, i)
sub_errors = element.FindInitializationErrors()
errors += [ prefix + error for error in sub_errors ]
else:
prefix = name + "."
sub_errors = value.FindInitializationErrors()
errors += [ prefix + error for error in sub_errors ]
return errors
cls.FindInitializationErrors = FindInitializationErrors
def _AddMergeFromMethod(cls):
LABEL_REPEATED = _FieldDescriptor.LABEL_REPEATED
CPPTYPE_MESSAGE = _FieldDescriptor.CPPTYPE_MESSAGE
def MergeFrom(self, msg):
if not isinstance(msg, cls):
raise TypeError(
"Parameter to MergeFrom() must be instance of same class: "
"expected %s got %s." % (cls.__name__, type(msg).__name__))
assert msg is not self
self._Modified()
fields = self._fields
for field, value in msg._fields.iteritems():
if field.label == LABEL_REPEATED:
field_value = fields.get(field)
if field_value is None:
# Construct a new object to represent this field.
field_value = field._default_constructor(self)
fields[field] = field_value
field_value.MergeFrom(value)
elif field.cpp_type == CPPTYPE_MESSAGE:
if value._is_present_in_parent:
field_value = fields.get(field)
if field_value is None:
# Construct a new object to represent this field.
field_value = field._default_constructor(self)
fields[field] = field_value
field_value.MergeFrom(value)
else:
self._fields[field] = value
if msg._unknown_fields:
if not self._unknown_fields:
self._unknown_fields = []
self._unknown_fields.extend(msg._unknown_fields)
cls.MergeFrom = MergeFrom
def _AddWhichOneofMethod(message_descriptor, cls):
def WhichOneof(self, oneof_name):
"""Returns the name of the currently set field inside a oneof, or None."""
try:
field = message_descriptor.oneofs_by_name[oneof_name]
except KeyError:
raise ValueError(
'Protocol message has no oneof "%s" field.' % oneof_name)
nested_field = self._oneofs.get(field, None)
if nested_field is not None and self.HasField(nested_field.name):
return nested_field.name
else:
return None
cls.WhichOneof = WhichOneof
def _AddMessageMethods(message_descriptor, cls):
"""Adds implementations of all Message methods to cls."""
_AddListFieldsMethod(message_descriptor, cls)
_AddHasFieldMethod(message_descriptor, cls)
_AddClearFieldMethod(message_descriptor, cls)
if message_descriptor.is_extendable:
_AddClearExtensionMethod(cls)
_AddHasExtensionMethod(cls)
_AddClearMethod(message_descriptor, cls)
_AddEqualsMethod(message_descriptor, cls)
_AddStrMethod(message_descriptor, cls)
_AddUnicodeMethod(message_descriptor, cls)
_AddSetListenerMethod(cls)
_AddByteSizeMethod(message_descriptor, cls)
_AddSerializeToStringMethod(message_descriptor, cls)
_AddSerializePartialToStringMethod(message_descriptor, cls)
_AddMergeFromStringMethod(message_descriptor, cls)
_AddIsInitializedMethod(message_descriptor, cls)
_AddMergeFromMethod(cls)
_AddWhichOneofMethod(message_descriptor, cls)
def _AddPrivateHelperMethods(message_descriptor, cls):
"""Adds implementation of private helper methods to cls."""
def Modified(self):
"""Sets the _cached_byte_size_dirty bit to true,
and propagates this to our listener iff this was a state change.
"""
# Note: Some callers check _cached_byte_size_dirty before calling
# _Modified() as an extra optimization. So, if this method is ever
# changed such that it does stuff even when _cached_byte_size_dirty is
# already true, the callers need to be updated.
if not self._cached_byte_size_dirty:
self._cached_byte_size_dirty = True
self._listener_for_children.dirty = True
self._is_present_in_parent = True
self._listener.Modified()
def _UpdateOneofState(self, field):
"""Sets field as the active field in its containing oneof.
Will also delete currently active field in the oneof, if it is different
from the argument. Does not mark the message as modified.
"""
other_field = self._oneofs.setdefault(field.containing_oneof, field)
if other_field is not field:
del self._fields[other_field]
self._oneofs[field.containing_oneof] = field
cls._Modified = Modified
cls.SetInParent = Modified
cls._UpdateOneofState = _UpdateOneofState
class _Listener(object):
"""MessageListener implementation that a parent message registers with its
child message.
In order to support semantics like:
foo.bar.baz.qux = 23
assert foo.HasField('bar')
...child objects must have back references to their parents.
This helper class is at the heart of this support.
"""
def __init__(self, parent_message):
"""Args:
parent_message: The message whose _Modified() method we should call when
we receive Modified() messages.
"""
# This listener establishes a back reference from a child (contained) object
# to its parent (containing) object. We make this a weak reference to avoid
# creating cyclic garbage when the client finishes with the 'parent' object
# in the tree.
if isinstance(parent_message, weakref.ProxyType):
self._parent_message_weakref = parent_message
else:
self._parent_message_weakref = weakref.proxy(parent_message)
# As an optimization, we also indicate directly on the listener whether
# or not the parent message is dirty. This way we can avoid traversing
# up the tree in the common case.
self.dirty = False
def Modified(self):
if self.dirty:
return
try:
# Propagate the signal to our parents iff this is the first field set.
self._parent_message_weakref._Modified()
except ReferenceError:
# We can get here if a client has kept a reference to a child object,
# and is now setting a field on it, but the child's parent has been
# garbage-collected. This is not an error.
pass
class _OneofListener(_Listener):
"""Special listener implementation for setting composite oneof fields."""
def __init__(self, parent_message, field):
"""Args:
parent_message: The message whose _Modified() method we should call when
we receive Modified() messages.
field: The descriptor of the field being set in the parent message.
"""
super(_OneofListener, self).__init__(parent_message)
self._field = field
def Modified(self):
"""Also updates the state of the containing oneof in the parent message."""
try:
self._parent_message_weakref._UpdateOneofState(self._field)
super(_OneofListener, self).Modified()
except ReferenceError:
pass
# TODO(robinson): Move elsewhere? This file is getting pretty ridiculous...
# TODO(robinson): Unify error handling of "unknown extension" crap.
# TODO(robinson): Support iteritems()-style iteration over all
# extensions with the "has" bits turned on?
class _ExtensionDict(object):
"""Dict-like container for supporting an indexable "Extensions"
field on proto instances.
Note that in all cases we expect extension handles to be
FieldDescriptors.
"""
def __init__(self, extended_message):
"""extended_message: Message instance for which we are the Extensions dict.
"""
self._extended_message = extended_message
def __getitem__(self, extension_handle):
"""Returns the current value of the given extension handle."""
_VerifyExtensionHandle(self._extended_message, extension_handle)
result = self._extended_message._fields.get(extension_handle)
if result is not None:
return result
if extension_handle.label == _FieldDescriptor.LABEL_REPEATED:
result = extension_handle._default_constructor(self._extended_message)
elif extension_handle.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE:
result = extension_handle.message_type._concrete_class()
try:
result._SetListener(self._extended_message._listener_for_children)
except ReferenceError:
pass
else:
# Singular scalar -- just return the default without inserting into the
# dict.
return extension_handle.default_value
# Atomically check if another thread has preempted us and, if not, swap
# in the new object we just created. If someone has preempted us, we
# take that object and discard ours.
# WARNING: We are relying on setdefault() being atomic. This is true
# in CPython but we haven't investigated others. This warning appears
# in several other locations in this file.
result = self._extended_message._fields.setdefault(
extension_handle, result)
return result
def __eq__(self, other):
if not isinstance(other, self.__class__):
return False
my_fields = self._extended_message.ListFields()
other_fields = other._extended_message.ListFields()
# Get rid of non-extension fields.
my_fields = [ field for field in my_fields if field.is_extension ]
other_fields = [ field for field in other_fields if field.is_extension ]
return my_fields == other_fields
def __ne__(self, other):
return not self == other
def __hash__(self):
raise TypeError('unhashable object')
# Note that this is only meaningful for non-repeated, scalar extension
# fields. Note also that we may have to call _Modified() when we do
# successfully set a field this way, to set any necssary "has" bits in the
# ancestors of the extended message.
def __setitem__(self, extension_handle, value):
"""If extension_handle specifies a non-repeated, scalar extension
field, sets the value of that field.
"""
_VerifyExtensionHandle(self._extended_message, extension_handle)
if (extension_handle.label == _FieldDescriptor.LABEL_REPEATED or
extension_handle.cpp_type == _FieldDescriptor.CPPTYPE_MESSAGE):
raise TypeError(
'Cannot assign to extension "%s" because it is a repeated or '
'composite type.' % extension_handle.full_name)
# It's slightly wasteful to lookup the type checker each time,
# but we expect this to be a vanishingly uncommon case anyway.
type_checker = type_checkers.GetTypeChecker(
extension_handle)
# pylint: disable=protected-access
self._extended_message._fields[extension_handle] = (
type_checker.CheckValue(value))
self._extended_message._Modified()
def _FindExtensionByName(self, name):
"""Tries to find a known extension with the specified name.
Args:
name: Extension full name.
Returns:
Extension field descriptor.
"""
return self._extended_message._extensions_by_name.get(name, None)
third_party/google/protobuf/internal/type_checkers.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
# Copyright 2008 Google Inc. All Rights Reserved.
"""Provides type checking routines.
This module defines type checking utilities in the forms of dictionaries:
VALUE_CHECKERS: A dictionary of field types and a value validation object.
TYPE_TO_BYTE_SIZE_FN: A dictionary with field types and a size computing
function.
TYPE_TO_SERIALIZE_METHOD: A dictionary with field types and serialization
function.
FIELD_TYPE_TO_WIRE_TYPE: A dictionary with field typed and their
coresponding wire types.
TYPE_TO_DESERIALIZE_METHOD: A dictionary with field types and deserialization
function.
"""
__author__ = 'robinson@google.com (Will Robinson)'
import sys ##PY25
if sys.version < '2.6': bytes = str ##PY25
from google.protobuf.internal import api_implementation
from google.protobuf.internal import decoder
from google.protobuf.internal import encoder
from google.protobuf.internal import wire_format
from google.protobuf import descriptor
_FieldDescriptor = descriptor.FieldDescriptor
def GetTypeChecker(field):
"""Returns a type checker for a message field of the specified types.
Args:
field: FieldDescriptor object for this field.
Returns:
An instance of TypeChecker which can be used to verify the types
of values assigned to a field of the specified type.
"""
if (field.cpp_type == _FieldDescriptor.CPPTYPE_STRING and
field.type == _FieldDescriptor.TYPE_STRING):
return UnicodeValueChecker()
if field.cpp_type == _FieldDescriptor.CPPTYPE_ENUM:
return EnumValueChecker(field.enum_type)
return _VALUE_CHECKERS[field.cpp_type]
# None of the typecheckers below make any attempt to guard against people
# subclassing builtin types and doing weird things. We're not trying to
# protect against malicious clients here, just people accidentally shooting
# themselves in the foot in obvious ways.
class TypeChecker(object):
"""Type checker used to catch type errors as early as possible
when the client is setting scalar fields in protocol messages.
"""
def __init__(self, *acceptable_types):
self._acceptable_types = acceptable_types
def CheckValue(self, proposed_value):
"""Type check the provided value and return it.
The returned value might have been normalized to another type.
"""
if not isinstance(proposed_value, self._acceptable_types):
message = ('%.1024r has type %s, but expected one of: %s' %
(proposed_value, type(proposed_value), self._acceptable_types))
raise TypeError(message)
return proposed_value
# IntValueChecker and its subclasses perform integer type-checks
# and bounds-checks.
class IntValueChecker(object):
"""Checker used for integer fields. Performs type-check and range check."""
def CheckValue(self, proposed_value):
if not isinstance(proposed_value, (int, long)):
message = ('%.1024r has type %s, but expected one of: %s' %
(proposed_value, type(proposed_value), (int, long)))
raise TypeError(message)
if not self._MIN <= proposed_value <= self._MAX:
raise ValueError('Value out of range: %d' % proposed_value)
# We force 32-bit values to int and 64-bit values to long to make
# alternate implementations where the distinction is more significant
# (e.g. the C++ implementation) simpler.
proposed_value = self._TYPE(proposed_value)
return proposed_value
class EnumValueChecker(object):
"""Checker used for enum fields. Performs type-check and range check."""
def __init__(self, enum_type):
self._enum_type = enum_type
def CheckValue(self, proposed_value):
if not isinstance(proposed_value, (int, long)):
message = ('%.1024r has type %s, but expected one of: %s' %
(proposed_value, type(proposed_value), (int, long)))
raise TypeError(message)
if proposed_value not in self._enum_type.values_by_number:
raise ValueError('Unknown enum value: %d' % proposed_value)
return proposed_value
class UnicodeValueChecker(object):
"""Checker used for string fields.
Always returns a unicode value, even if the input is of type str.
"""
def CheckValue(self, proposed_value):
if not isinstance(proposed_value, (bytes, unicode)):
message = ('%.1024r has type %s, but expected one of: %s' %
(proposed_value, type(proposed_value), (bytes, unicode)))
raise TypeError(message)
# If the value is of type 'bytes' make sure that it is in 7-bit ASCII
# encoding.
if isinstance(proposed_value, bytes):
try:
proposed_value = proposed_value.decode('ascii')
except UnicodeDecodeError:
raise ValueError('%.1024r has type bytes, but isn\'t in 7-bit ASCII '
'encoding. Non-ASCII strings must be converted to '
'unicode objects before being added.' %
(proposed_value))
return proposed_value
class Int32ValueChecker(IntValueChecker):
# We're sure to use ints instead of longs here since comparison may be more
# efficient.
_MIN = -2147483648
_MAX = 2147483647
_TYPE = int
class Uint32ValueChecker(IntValueChecker):
_MIN = 0
_MAX = (1 << 32) - 1
_TYPE = int
class Int64ValueChecker(IntValueChecker):
_MIN = -(1 << 63)
_MAX = (1 << 63) - 1
_TYPE = long
class Uint64ValueChecker(IntValueChecker):
_MIN = 0
_MAX = (1 << 64) - 1
_TYPE = long
# Type-checkers for all scalar CPPTYPEs.
_VALUE_CHECKERS = {
_FieldDescriptor.CPPTYPE_INT32: Int32ValueChecker(),
_FieldDescriptor.CPPTYPE_INT64: Int64ValueChecker(),
_FieldDescriptor.CPPTYPE_UINT32: Uint32ValueChecker(),
_FieldDescriptor.CPPTYPE_UINT64: Uint64ValueChecker(),
_FieldDescriptor.CPPTYPE_DOUBLE: TypeChecker(
float, int, long),
_FieldDescriptor.CPPTYPE_FLOAT: TypeChecker(
float, int, long),
_FieldDescriptor.CPPTYPE_BOOL: TypeChecker(bool, int),
_FieldDescriptor.CPPTYPE_STRING: TypeChecker(bytes),
}
# Map from field type to a function F, such that F(field_num, value)
# gives the total byte size for a value of the given type. This
# byte size includes tag information and any other additional space
# associated with serializing "value".
TYPE_TO_BYTE_SIZE_FN = {
_FieldDescriptor.TYPE_DOUBLE: wire_format.DoubleByteSize,
_FieldDescriptor.TYPE_FLOAT: wire_format.FloatByteSize,
_FieldDescriptor.TYPE_INT64: wire_format.Int64ByteSize,
_FieldDescriptor.TYPE_UINT64: wire_format.UInt64ByteSize,
_FieldDescriptor.TYPE_INT32: wire_format.Int32ByteSize,
_FieldDescriptor.TYPE_FIXED64: wire_format.Fixed64ByteSize,
_FieldDescriptor.TYPE_FIXED32: wire_format.Fixed32ByteSize,
_FieldDescriptor.TYPE_BOOL: wire_format.BoolByteSize,
_FieldDescriptor.TYPE_STRING: wire_format.StringByteSize,
_FieldDescriptor.TYPE_GROUP: wire_format.GroupByteSize,
_FieldDescriptor.TYPE_MESSAGE: wire_format.MessageByteSize,
_FieldDescriptor.TYPE_BYTES: wire_format.BytesByteSize,
_FieldDescriptor.TYPE_UINT32: wire_format.UInt32ByteSize,
_FieldDescriptor.TYPE_ENUM: wire_format.EnumByteSize,
_FieldDescriptor.TYPE_SFIXED32: wire_format.SFixed32ByteSize,
_FieldDescriptor.TYPE_SFIXED64: wire_format.SFixed64ByteSize,
_FieldDescriptor.TYPE_SINT32: wire_format.SInt32ByteSize,
_FieldDescriptor.TYPE_SINT64: wire_format.SInt64ByteSize
}
# Maps from field types to encoder constructors.
TYPE_TO_ENCODER = {
_FieldDescriptor.TYPE_DOUBLE: encoder.DoubleEncoder,
_FieldDescriptor.TYPE_FLOAT: encoder.FloatEncoder,
_FieldDescriptor.TYPE_INT64: encoder.Int64Encoder,
_FieldDescriptor.TYPE_UINT64: encoder.UInt64Encoder,
_FieldDescriptor.TYPE_INT32: encoder.Int32Encoder,
_FieldDescriptor.TYPE_FIXED64: encoder.Fixed64Encoder,
_FieldDescriptor.TYPE_FIXED32: encoder.Fixed32Encoder,
_FieldDescriptor.TYPE_BOOL: encoder.BoolEncoder,
_FieldDescriptor.TYPE_STRING: encoder.StringEncoder,
_FieldDescriptor.TYPE_GROUP: encoder.GroupEncoder,
_FieldDescriptor.TYPE_MESSAGE: encoder.MessageEncoder,
_FieldDescriptor.TYPE_BYTES: encoder.BytesEncoder,
_FieldDescriptor.TYPE_UINT32: encoder.UInt32Encoder,
_FieldDescriptor.TYPE_ENUM: encoder.EnumEncoder,
_FieldDescriptor.TYPE_SFIXED32: encoder.SFixed32Encoder,
_FieldDescriptor.TYPE_SFIXED64: encoder.SFixed64Encoder,
_FieldDescriptor.TYPE_SINT32: encoder.SInt32Encoder,
_FieldDescriptor.TYPE_SINT64: encoder.SInt64Encoder,
}
# Maps from field types to sizer constructors.
TYPE_TO_SIZER = {
_FieldDescriptor.TYPE_DOUBLE: encoder.DoubleSizer,
_FieldDescriptor.TYPE_FLOAT: encoder.FloatSizer,
_FieldDescriptor.TYPE_INT64: encoder.Int64Sizer,
_FieldDescriptor.TYPE_UINT64: encoder.UInt64Sizer,
_FieldDescriptor.TYPE_INT32: encoder.Int32Sizer,
_FieldDescriptor.TYPE_FIXED64: encoder.Fixed64Sizer,
_FieldDescriptor.TYPE_FIXED32: encoder.Fixed32Sizer,
_FieldDescriptor.TYPE_BOOL: encoder.BoolSizer,
_FieldDescriptor.TYPE_STRING: encoder.StringSizer,
_FieldDescriptor.TYPE_GROUP: encoder.GroupSizer,
_FieldDescriptor.TYPE_MESSAGE: encoder.MessageSizer,
_FieldDescriptor.TYPE_BYTES: encoder.BytesSizer,
_FieldDescriptor.TYPE_UINT32: encoder.UInt32Sizer,
_FieldDescriptor.TYPE_ENUM: encoder.EnumSizer,
_FieldDescriptor.TYPE_SFIXED32: encoder.SFixed32Sizer,
_FieldDescriptor.TYPE_SFIXED64: encoder.SFixed64Sizer,
_FieldDescriptor.TYPE_SINT32: encoder.SInt32Sizer,
_FieldDescriptor.TYPE_SINT64: encoder.SInt64Sizer,
}
# Maps from field type to a decoder constructor.
TYPE_TO_DECODER = {
_FieldDescriptor.TYPE_DOUBLE: decoder.DoubleDecoder,
_FieldDescriptor.TYPE_FLOAT: decoder.FloatDecoder,
_FieldDescriptor.TYPE_INT64: decoder.Int64Decoder,
_FieldDescriptor.TYPE_UINT64: decoder.UInt64Decoder,
_FieldDescriptor.TYPE_INT32: decoder.Int32Decoder,
_FieldDescriptor.TYPE_FIXED64: decoder.Fixed64Decoder,
_FieldDescriptor.TYPE_FIXED32: decoder.Fixed32Decoder,
_FieldDescriptor.TYPE_BOOL: decoder.BoolDecoder,
_FieldDescriptor.TYPE_STRING: decoder.StringDecoder,
_FieldDescriptor.TYPE_GROUP: decoder.GroupDecoder,
_FieldDescriptor.TYPE_MESSAGE: decoder.MessageDecoder,
_FieldDescriptor.TYPE_BYTES: decoder.BytesDecoder,
_FieldDescriptor.TYPE_UINT32: decoder.UInt32Decoder,
_FieldDescriptor.TYPE_ENUM: decoder.EnumDecoder,
_FieldDescriptor.TYPE_SFIXED32: decoder.SFixed32Decoder,
_FieldDescriptor.TYPE_SFIXED64: decoder.SFixed64Decoder,
_FieldDescriptor.TYPE_SINT32: decoder.SInt32Decoder,
_FieldDescriptor.TYPE_SINT64: decoder.SInt64Decoder,
}
# Maps from field type to expected wiretype.
FIELD_TYPE_TO_WIRE_TYPE = {
_FieldDescriptor.TYPE_DOUBLE: wire_format.WIRETYPE_FIXED64,
_FieldDescriptor.TYPE_FLOAT: wire_format.WIRETYPE_FIXED32,
_FieldDescriptor.TYPE_INT64: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_UINT64: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_INT32: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_FIXED64: wire_format.WIRETYPE_FIXED64,
_FieldDescriptor.TYPE_FIXED32: wire_format.WIRETYPE_FIXED32,
_FieldDescriptor.TYPE_BOOL: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_STRING:
wire_format.WIRETYPE_LENGTH_DELIMITED,
_FieldDescriptor.TYPE_GROUP: wire_format.WIRETYPE_START_GROUP,
_FieldDescriptor.TYPE_MESSAGE:
wire_format.WIRETYPE_LENGTH_DELIMITED,
_FieldDescriptor.TYPE_BYTES:
wire_format.WIRETYPE_LENGTH_DELIMITED,
_FieldDescriptor.TYPE_UINT32: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_ENUM: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_SFIXED32: wire_format.WIRETYPE_FIXED32,
_FieldDescriptor.TYPE_SFIXED64: wire_format.WIRETYPE_FIXED64,
_FieldDescriptor.TYPE_SINT32: wire_format.WIRETYPE_VARINT,
_FieldDescriptor.TYPE_SINT64: wire_format.WIRETYPE_VARINT,
}
third_party/google/protobuf/internal/wire_format.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Constants and static functions to support protocol buffer wire format."""
__author__ = 'robinson@google.com (Will Robinson)'
import struct
from google.protobuf import descriptor
from google.protobuf import message
TAG_TYPE_BITS = 3 # Number of bits used to hold type info in a proto tag.
TAG_TYPE_MASK = (1 << TAG_TYPE_BITS) - 1 # 0x7
# These numbers identify the wire type of a protocol buffer value.
# We use the least-significant TAG_TYPE_BITS bits of the varint-encoded
# tag-and-type to store one of these WIRETYPE_* constants.
# These values must match WireType enum in google/protobuf/wire_format.h.
WIRETYPE_VARINT = 0
WIRETYPE_FIXED64 = 1
WIRETYPE_LENGTH_DELIMITED = 2
WIRETYPE_START_GROUP = 3
WIRETYPE_END_GROUP = 4
WIRETYPE_FIXED32 = 5
_WIRETYPE_MAX = 5
# Bounds for various integer types.
INT32_MAX = int((1 << 31) - 1)
INT32_MIN = int(-(1 << 31))
UINT32_MAX = (1 << 32) - 1
INT64_MAX = (1 << 63) - 1
INT64_MIN = -(1 << 63)
UINT64_MAX = (1 << 64) - 1
# "struct" format strings that will encode/decode the specified formats.
FORMAT_UINT32_LITTLE_ENDIAN = '<I'
FORMAT_UINT64_LITTLE_ENDIAN = '<Q'
FORMAT_FLOAT_LITTLE_ENDIAN = '<f'
FORMAT_DOUBLE_LITTLE_ENDIAN = '<d'
# We'll have to provide alternate implementations of AppendLittleEndian*() on
# any architectures where these checks fail.
if struct.calcsize(FORMAT_UINT32_LITTLE_ENDIAN) != 4:
raise AssertionError('Format "I" is not a 32-bit number.')
if struct.calcsize(FORMAT_UINT64_LITTLE_ENDIAN) != 8:
raise AssertionError('Format "Q" is not a 64-bit number.')
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 message.EncodeError('Unknown wire type: %d' % wire_type)
return (field_number << TAG_TYPE_BITS) | wire_type
def UnpackTag(tag):
"""The inverse of PackTag(). Given an unsigned 32-bit number,
returns a (field_number, wire_type) tuple.
"""
return (tag >> TAG_TYPE_BITS), (tag & TAG_TYPE_MASK)
def ZigZagEncode(value):
"""ZigZag Transform: Encodes signed integers so that they can be
effectively used with varint encoding. See wire_format.h for
more details.
"""
if value >= 0:
return value << 1
return (value << 1) ^ (~0)
def ZigZagDecode(value):
"""Inverse of ZigZagEncode()."""
if not value & 0x1:
return value >> 1
return (value >> 1) ^ (~0)
# The *ByteSize() functions below return the number of bytes required to
# serialize "field number + type" information and then serialize the value.
def Int32ByteSize(field_number, int32):
return Int64ByteSize(field_number, int32)
def Int32ByteSizeNoTag(int32):
return _VarUInt64ByteSizeNoTag(0xffffffffffffffff & int32)
def Int64ByteSize(field_number, int64):
# Have to convert to uint before calling UInt64ByteSize().
return UInt64ByteSize(field_number, 0xffffffffffffffff & int64)
def UInt32ByteSize(field_number, uint32):
return UInt64ByteSize(field_number, uint32)
def UInt64ByteSize(field_number, uint64):
return TagByteSize(field_number) + _VarUInt64ByteSizeNoTag(uint64)
def SInt32ByteSize(field_number, int32):
return UInt32ByteSize(field_number, ZigZagEncode(int32))
def SInt64ByteSize(field_number, int64):
return UInt64ByteSize(field_number, ZigZagEncode(int64))
def Fixed32ByteSize(field_number, fixed32):
return TagByteSize(field_number) + 4
def Fixed64ByteSize(field_number, fixed64):
return TagByteSize(field_number) + 8
def SFixed32ByteSize(field_number, sfixed32):
return TagByteSize(field_number) + 4
def SFixed64ByteSize(field_number, sfixed64):
return TagByteSize(field_number) + 8
def FloatByteSize(field_number, flt):
return TagByteSize(field_number) + 4
def DoubleByteSize(field_number, double):
return TagByteSize(field_number) + 8
def BoolByteSize(field_number, b):
return TagByteSize(field_number) + 1
def EnumByteSize(field_number, enum):
return UInt32ByteSize(field_number, enum)
def StringByteSize(field_number, string):
return BytesByteSize(field_number, string.encode('utf-8'))
def BytesByteSize(field_number, b):
return (TagByteSize(field_number)
+ _VarUInt64ByteSizeNoTag(len(b))
+ len(b))
def GroupByteSize(field_number, message):
return (2 * TagByteSize(field_number) # START and END group.
+ message.ByteSize())
def MessageByteSize(field_number, message):
return (TagByteSize(field_number)
+ _VarUInt64ByteSizeNoTag(message.ByteSize())
+ message.ByteSize())
def MessageSetItemByteSize(field_number, msg):
# First compute the sizes of the tags.
# There are 2 tags for the beginning and ending of the repeated group, that
# is field number 1, one with field number 2 (type_id) and one with field
# number 3 (message).
total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))
# Add the number of bytes for type_id.
total_size += _VarUInt64ByteSizeNoTag(field_number)
message_size = msg.ByteSize()
# The number of bytes for encoding the length of the message.
total_size += _VarUInt64ByteSizeNoTag(message_size)
# The size of the message.
total_size += message_size
return total_size
def TagByteSize(field_number):
"""Returns the bytes required to serialize a tag with this field number."""
# Just pass in type 0, since the type won't affect the tag+type size.
return _VarUInt64ByteSizeNoTag(PackTag(field_number, 0))
# Private helper function for the *ByteSize() functions above.
def _VarUInt64ByteSizeNoTag(uint64):
"""Returns the number of bytes required to serialize a single varint
using boundary value comparisons. (unrolled loop optimization -WPierce)
uint64 must be unsigned.
"""
if uint64 <= 0x7f: return 1
if uint64 <= 0x3fff: return 2
if uint64 <= 0x1fffff: return 3
if uint64 <= 0xfffffff: return 4
if uint64 <= 0x7ffffffff: return 5
if uint64 <= 0x3ffffffffff: return 6
if uint64 <= 0x1ffffffffffff: return 7
if uint64 <= 0xffffffffffffff: return 8
if uint64 <= 0x7fffffffffffffff: return 9
if uint64 > UINT64_MAX:
raise message.EncodeError('Value out of range: %d' % uint64)
return 10
NON_PACKABLE_TYPES = (
descriptor.FieldDescriptor.TYPE_STRING,
descriptor.FieldDescriptor.TYPE_GROUP,
descriptor.FieldDescriptor.TYPE_MESSAGE,
descriptor.FieldDescriptor.TYPE_BYTES
)
def IsTypePackable(field_type):
"""Return true iff packable = true is valid for fields of this type.
Args:
field_type: a FieldDescriptor::Type value.
Returns:
True iff fields of this type are packable.
"""
return field_type not in NON_PACKABLE_TYPES
third_party/google/protobuf/message.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
# TODO(robinson): We should just make these methods all "pure-virtual" and move
# all implementation out, into reflection.py for now.
"""Contains an abstract base class for protocol messages."""
__author__ = 'robinson@google.com (Will Robinson)'
class Error(Exception): pass
class DecodeError(Error): pass
class EncodeError(Error): pass
class Message(object):
"""Abstract base class for protocol messages.
Protocol message classes are almost always generated by the protocol
compiler. These generated types subclass Message and implement the methods
shown below.
TODO(robinson): Link to an HTML document here.
TODO(robinson): Document that instances of this class will also
have an Extensions attribute with __getitem__ and __setitem__.
Again, not sure how to best convey this.
TODO(robinson): Document that the class must also have a static
RegisterExtension(extension_field) method.
Not sure how to best express at this point.
"""
# TODO(robinson): Document these fields and methods.
__slots__ = []
DESCRIPTOR = None
def __deepcopy__(self, memo=None):
clone = type(self)()
clone.MergeFrom(self)
return clone
def __eq__(self, other_msg):
"""Recursively compares two messages by value and structure."""
raise NotImplementedError
def __ne__(self, other_msg):
# Can't just say self != other_msg, since that would infinitely recurse. :)
return not self == other_msg
def __hash__(self):
raise TypeError('unhashable object')
def __str__(self):
"""Outputs a human-readable representation of the message."""
raise NotImplementedError
def __unicode__(self):
"""Outputs a human-readable representation of the message."""
raise NotImplementedError
def MergeFrom(self, other_msg):
"""Merges the contents of the specified message into current message.
This method merges the contents of the specified message into the current
message. Singular fields that are set in the specified message overwrite
the corresponding fields in the current message. Repeated fields are
appended. Singular sub-messages and groups are recursively merged.
Args:
other_msg: Message to merge into the current message.
"""
raise NotImplementedError
def CopyFrom(self, other_msg):
"""Copies the content of the specified message into the current message.
The method clears the current message and then merges the specified
message using MergeFrom.
Args:
other_msg: Message to copy into the current one.
"""
if self is other_msg:
return
self.Clear()
self.MergeFrom(other_msg)
def Clear(self):
"""Clears all data that was set in the message."""
raise NotImplementedError
def SetInParent(self):
"""Mark this as present in the parent.
This normally happens automatically when you assign a field of a
sub-message, but sometimes you want to make the sub-message
present while keeping it empty. If you find yourself using this,
you may want to reconsider your design."""
raise NotImplementedError
def IsInitialized(self):
"""Checks if the message is initialized.
Returns:
The method returns True if the message is initialized (i.e. all of its
required fields are set).
"""
raise NotImplementedError
# TODO(robinson): MergeFromString() should probably return None and be
# implemented in terms of a helper that returns the # of bytes read. Our
# deserialization routines would use the helper when recursively
# deserializing, but the end user would almost always just want the no-return
# MergeFromString().
def MergeFromString(self, serialized):
"""Merges serialized protocol buffer data into this message.
When we find a field in |serialized| that is already present
in this message:
- If it's a "repeated" field, we append to the end of our list.
- Else, if it's a scalar, we overwrite our field.
- Else, (it's a nonrepeated composite), we recursively merge
into the existing composite.
TODO(robinson): Document handling of unknown fields.
Args:
serialized: Any object that allows us to call buffer(serialized)
to access a string of bytes using the buffer interface.
TODO(robinson): When we switch to a helper, this will return None.
Returns:
The number of bytes read from |serialized|.
For non-group messages, this will always be len(serialized),
but for messages which are actually groups, this will
generally be less than len(serialized), since we must
stop when we reach an END_GROUP tag. Note that if
we *do* stop because of an END_GROUP tag, the number
of bytes returned does not include the bytes
for the END_GROUP tag information.
"""
raise NotImplementedError
def ParseFromString(self, serialized):
"""Parse serialized protocol buffer data into this message.
Like MergeFromString(), except we clear the object first and
do not return the value that MergeFromString returns.
"""
self.Clear()
self.MergeFromString(serialized)
def SerializeToString(self):
"""Serializes the protocol message to a binary string.
Returns:
A binary string representation of the message if all of the required
fields in the message are set (i.e. the message is initialized).
Raises:
message.EncodeError if the message isn't initialized.
"""
raise NotImplementedError
def SerializePartialToString(self):
"""Serializes the protocol message to a binary string.
This method is similar to SerializeToString but doesn't check if the
message is initialized.
Returns:
A string representation of the partial message.
"""
raise NotImplementedError
# TODO(robinson): Decide whether we like these better
# than auto-generated has_foo() and clear_foo() methods
# on the instances themselves. This way is less consistent
# with C++, but it makes reflection-type access easier and
# reduces the number of magically autogenerated things.
#
# TODO(robinson): Be sure to document (and test) exactly
# which field names are accepted here. Are we case-sensitive?
# What do we do with fields that share names with Python keywords
# like 'lambda' and 'yield'?
#
# nnorwitz says:
# """
# Typically (in python), an underscore is appended to names that are
# keywords. So they would become lambda_ or yield_.
# """
def ListFields(self):
"""Returns a list of (FieldDescriptor, value) tuples for all
fields in the message which are not empty. A singular field is non-empty
if HasField() would return true, and a repeated field is non-empty if
it contains at least one element. The fields are ordered by field
number"""
raise NotImplementedError
def HasField(self, field_name):
"""Checks if a certain field is set for the message. Note if the
field_name is not defined in the message descriptor, ValueError will be
raised."""
raise NotImplementedError
def ClearField(self, field_name):
raise NotImplementedError
def HasExtension(self, extension_handle):
raise NotImplementedError
def ClearExtension(self, extension_handle):
raise NotImplementedError
def ByteSize(self):
"""Returns the serialized size of this message.
Recursively calls ByteSize() on all contained messages.
"""
raise NotImplementedError
def _SetListener(self, message_listener):
"""Internal method used by the protocol message implementation.
Clients should not call this directly.
Sets a listener that this message will call on certain state transitions.
The purpose of this method is to register back-edges from children to
parents at runtime, for the purpose of setting "has" bits and
byte-size-dirty bits in the parent and ancestor objects whenever a child or
descendant object is modified.
If the client wants to disconnect this Message from the object tree, she
explicitly sets callback to None.
If message_listener is None, unregisters any existing listener. Otherwise,
message_listener must implement the MessageListener interface in
internal/message_listener.py, and we discard any listener registered
via a previous _SetListener() call.
"""
raise NotImplementedError
def __getstate__(self):
"""Support the pickle protocol."""
return dict(serialized=self.SerializePartialToString())
def __setstate__(self, state):
"""Support the pickle protocol."""
self.__init__()
self.ParseFromString(state['serialized'])
third_party/google/protobuf/message_factory.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
# Copyright 2012 Google Inc. All Rights Reserved.
"""Provides a factory class for generating dynamic messages.
The easiest way to use this class is if you have access to the FileDescriptor
protos containing the messages you want to create you can just do the following:
message_classes = message_factory.GetMessages(iterable_of_file_descriptors)
my_proto_instance = message_classes['some.proto.package.MessageName']()
"""
__author__ = 'matthewtoia@google.com (Matt Toia)'
import sys ##PY25
from google.protobuf import descriptor_database
from google.protobuf import descriptor_pool
from google.protobuf import message
from google.protobuf import reflection
class MessageFactory(object):
"""Factory for creating Proto2 messages from descriptors in a pool."""
def __init__(self, pool=None):
"""Initializes a new factory."""
self.pool = (pool or descriptor_pool.DescriptorPool(
descriptor_database.DescriptorDatabase()))
# local cache of all classes built from protobuf descriptors
self._classes = {}
def GetPrototype(self, descriptor):
"""Builds a proto2 message class based on the passed in descriptor.
Passing a descriptor with a fully qualified name matching a previous
invocation will cause the same class to be returned.
Args:
descriptor: The descriptor to build from.
Returns:
A class describing the passed in descriptor.
"""
if descriptor.full_name not in self._classes:
descriptor_name = descriptor.name
if sys.version_info[0] < 3: ##PY25
##!PY25 if str is bytes: # PY2
descriptor_name = descriptor.name.encode('ascii', 'ignore')
result_class = reflection.GeneratedProtocolMessageType(
descriptor_name,
(message.Message,),
{'DESCRIPTOR': descriptor, '__module__': None})
# If module not set, it wrongly points to the reflection.py module.
self._classes[descriptor.full_name] = result_class
for field in descriptor.fields:
if field.message_type:
self.GetPrototype(field.message_type)
for extension in result_class.DESCRIPTOR.extensions:
if extension.containing_type.full_name not in self._classes:
self.GetPrototype(extension.containing_type)
extended_class = self._classes[extension.containing_type.full_name]
extended_class.RegisterExtension(extension)
return self._classes[descriptor.full_name]
def GetMessages(self, files):
"""Gets all the messages from a specified file.
This will find and resolve dependencies, failing if the descriptor
pool cannot satisfy them.
Args:
files: The file names to extract messages from.
Returns:
A dictionary mapping proto names to the message classes. This will include
any dependent messages as well as any messages defined in the same file as
a specified message.
"""
result = {}
for file_name in files:
file_desc = self.pool.FindFileByName(file_name)
for name, msg in file_desc.message_types_by_name.iteritems():
if file_desc.package:
full_name = '.'.join([file_desc.package, name])
else:
full_name = msg.name
result[full_name] = self.GetPrototype(
self.pool.FindMessageTypeByName(full_name))
# While the extension FieldDescriptors are created by the descriptor pool,
# the python classes created in the factory need them to be registered
# explicitly, which is done below.
#
# The call to RegisterExtension will specifically check if the
# extension was already registered on the object and either
# ignore the registration if the original was the same, or raise
# an error if they were different.
for name, extension in file_desc.extensions_by_name.iteritems():
if extension.containing_type.full_name not in self._classes:
self.GetPrototype(extension.containing_type)
extended_class = self._classes[extension.containing_type.full_name]
extended_class.RegisterExtension(extension)
return result
_FACTORY = MessageFactory()
def GetMessages(file_protos):
"""Builds a dictionary of all the messages available in a set of files.
Args:
file_protos: A sequence of file protos to build messages out of.
Returns:
A dictionary mapping proto names to the message classes. This will include
any dependent messages as well as any messages defined in the same file as
a specified message.
"""
for file_proto in file_protos:
_FACTORY.pool.Add(file_proto)
return _FACTORY.GetMessages([file_proto.name for file_proto in file_protos])
third_party/google/protobuf/reflection.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
# This code is meant to work on Python 2.4 and above only.
"""Contains a metaclass and helper functions used to create
protocol message classes from Descriptor objects at runtime.
Recall that a metaclass is the "type" of a class.
(A class is to a metaclass what an instance is to a class.)
In this case, we use the GeneratedProtocolMessageType metaclass
to inject all the useful functionality into the classes
output by the protocol compiler at compile-time.
The upshot of all this is that the real implementation
details for ALL pure-Python protocol buffers are *here in
this file*.
"""
__author__ = 'robinson@google.com (Will Robinson)'
from google.protobuf.internal import api_implementation
from google.protobuf import descriptor as descriptor_mod
from google.protobuf import message
_FieldDescriptor = descriptor_mod.FieldDescriptor
if api_implementation.Type() == 'cpp':
if api_implementation.Version() == 2:
from google.protobuf.pyext import cpp_message
_NewMessage = cpp_message.NewMessage
_InitMessage = cpp_message.InitMessage
else:
from google.protobuf.internal import cpp_message
_NewMessage = cpp_message.NewMessage
_InitMessage = cpp_message.InitMessage
else:
from google.protobuf.internal import python_message
_NewMessage = python_message.NewMessage
_InitMessage = python_message.InitMessage
class GeneratedProtocolMessageType(type):
"""Metaclass for protocol message classes created at runtime from Descriptors.
We add implementations for all methods described in the Message class. We
also create properties to allow getting/setting all fields in the protocol
message. Finally, we create slots to prevent users from accidentally
"setting" nonexistent fields in the protocol message, which then wouldn't get
serialized / deserialized properly.
The protocol compiler currently uses this metaclass to create protocol
message classes at runtime. Clients can also manually create their own
classes at runtime, as in this example:
mydescriptor = Descriptor(.....)
class MyProtoClass(Message):
__metaclass__ = GeneratedProtocolMessageType
DESCRIPTOR = mydescriptor
myproto_instance = MyProtoClass()
myproto.foo_field = 23
...
The above example will not work for nested types. If you wish to include them,
use reflection.MakeClass() instead of manually instantiating the class in
order to create the appropriate class structure.
"""
# Must be consistent with the protocol-compiler code in
# proto2/compiler/internal/generator.*.
_DESCRIPTOR_KEY = 'DESCRIPTOR'
def __new__(cls, name, bases, dictionary):
"""Custom allocation for runtime-generated class types.
We override __new__ because this is apparently the only place
where we can meaningfully set __slots__ on the class we're creating(?).
(The interplay between metaclasses and slots is not very well-documented).
Args:
name: Name of the class (ignored, but required by the
metaclass protocol).
bases: Base classes of the class we're constructing.
(Should be message.Message). We ignore this field, but
it's required by the metaclass protocol
dictionary: The class dictionary of the class we're
constructing. dictionary[_DESCRIPTOR_KEY] must contain
a Descriptor object describing this protocol message
type.
Returns:
Newly-allocated class.
"""
descriptor = dictionary[GeneratedProtocolMessageType._DESCRIPTOR_KEY]
bases = _NewMessage(bases, descriptor, dictionary)
superclass = super(GeneratedProtocolMessageType, cls)
new_class = superclass.__new__(cls, name, bases, dictionary)
setattr(descriptor, '_concrete_class', new_class)
return new_class
def __init__(cls, name, bases, dictionary):
"""Here we perform the majority of our work on the class.
We add enum getters, an __init__ method, implementations
of all Message methods, and properties for all fields
in the protocol type.
Args:
name: Name of the class (ignored, but required by the
metaclass protocol).
bases: Base classes of the class we're constructing.
(Should be message.Message). We ignore this field, but
it's required by the metaclass protocol
dictionary: The class dictionary of the class we're
constructing. dictionary[_DESCRIPTOR_KEY] must contain
a Descriptor object describing this protocol message
type.
"""
descriptor = dictionary[GeneratedProtocolMessageType._DESCRIPTOR_KEY]
_InitMessage(descriptor, cls)
superclass = super(GeneratedProtocolMessageType, cls)
superclass.__init__(name, bases, dictionary)
def ParseMessage(descriptor, byte_str):
"""Generate a new Message instance from this Descriptor and a byte string.
Args:
descriptor: Protobuf Descriptor object
byte_str: Serialized protocol buffer byte string
Returns:
Newly created protobuf Message object.
"""
result_class = MakeClass(descriptor)
new_msg = result_class()
new_msg.ParseFromString(byte_str)
return new_msg
def MakeClass(descriptor):
"""Construct a class object for a protobuf described by descriptor.
Composite descriptors are handled by defining the new class as a member of the
parent class, recursing as deep as necessary.
This is the dynamic equivalent to:
class Parent(message.Message):
__metaclass__ = GeneratedProtocolMessageType
DESCRIPTOR = descriptor
class Child(message.Message):
__metaclass__ = GeneratedProtocolMessageType
DESCRIPTOR = descriptor.nested_types[0]
Sample usage:
file_descriptor = descriptor_pb2.FileDescriptorProto()
file_descriptor.ParseFromString(proto2_string)
msg_descriptor = descriptor.MakeDescriptor(file_descriptor.message_type[0])
msg_class = reflection.MakeClass(msg_descriptor)
msg = msg_class()
Args:
descriptor: A descriptor.Descriptor object describing the protobuf.
Returns:
The Message class object described by the descriptor.
"""
attributes = {}
for name, nested_type in descriptor.nested_types_by_name.items():
attributes[name] = MakeClass(nested_type)
attributes[GeneratedProtocolMessageType._DESCRIPTOR_KEY] = descriptor
return GeneratedProtocolMessageType(str(descriptor.name), (message.Message,),
attributes)
third_party/google/protobuf/service.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""DEPRECATED: Declares the RPC service interfaces.
This module declares the abstract interfaces underlying proto2 RPC
services. These are intended to be independent of any particular RPC
implementation, so that proto2 services can be used on top of a variety
of implementations. Starting with version 2.3.0, RPC implementations should
not try to build on these, but should instead provide code generator plugins
which generate code specific to the particular RPC implementation. This way
the generated code can be more appropriate for the implementation in use
and can avoid unnecessary layers of indirection.
"""
__author__ = 'petar@google.com (Petar Petrov)'
class RpcException(Exception):
"""Exception raised on failed blocking RPC method call."""
pass
class Service(object):
"""Abstract base interface for protocol-buffer-based RPC services.
Services themselves are abstract classes (implemented either by servers or as
stubs), but they subclass this base interface. The methods of this
interface can be used to call the methods of the service without knowing
its exact type at compile time (analogous to the Message interface).
"""
def GetDescriptor():
"""Retrieves this service's descriptor."""
raise NotImplementedError
def CallMethod(self, method_descriptor, rpc_controller,
request, done):
"""Calls a method of the service specified by method_descriptor.
If "done" is None then the call is blocking and the response
message will be returned directly. Otherwise the call is asynchronous
and "done" will later be called with the response value.
In the blocking case, RpcException will be raised on error.
Preconditions:
* method_descriptor.service == GetDescriptor
* request is of the exact same classes as returned by
GetRequestClass(method).
* After the call has started, the request must not be modified.
* "rpc_controller" is of the correct type for the RPC implementation being
used by this Service. For stubs, the "correct type" depends on the
RpcChannel which the stub is using.
Postconditions:
* "done" will be called when the method is complete. This may be
before CallMethod() returns or it may be at some point in the future.
* If the RPC failed, the response value passed to "done" will be None.
Further details about the failure can be found by querying the
RpcController.
"""
raise NotImplementedError
def GetRequestClass(self, method_descriptor):
"""Returns the class of the request message for the specified method.
CallMethod() requires that the request is of a particular subclass of
Message. GetRequestClass() gets the default instance of this required
type.
Example:
method = service.GetDescriptor().FindMethodByName("Foo")
request = stub.GetRequestClass(method)()
request.ParseFromString(input)
service.CallMethod(method, request, callback)
"""
raise NotImplementedError
def GetResponseClass(self, method_descriptor):
"""Returns the class of the response message for the specified method.
This method isn't really needed, as the RpcChannel's CallMethod constructs
the response protocol message. It's provided anyway in case it is useful
for the caller to know the response type in advance.
"""
raise NotImplementedError
class RpcController(object):
"""An RpcController mediates a single method call.
The primary purpose of the controller is to provide a way to manipulate
settings specific to the RPC implementation and to find out about RPC-level
errors. The methods provided by the RpcController interface are intended
to be a "least common denominator" set of features which we expect all
implementations to support. Specific implementations may provide more
advanced features (e.g. deadline propagation).
"""
# Client-side methods below
def Reset(self):
"""Resets the RpcController to its initial state.
After the RpcController has been reset, it may be reused in
a new call. Must not be called while an RPC is in progress.
"""
raise NotImplementedError
def Failed(self):
"""Returns true if the call failed.
After a call has finished, returns true if the call failed. The possible
reasons for failure depend on the RPC implementation. Failed() must not
be called before a call has finished. If Failed() returns true, the
contents of the response message are undefined.
"""
raise NotImplementedError
def ErrorText(self):
"""If Failed is true, returns a human-readable description of the error."""
raise NotImplementedError
def StartCancel(self):
"""Initiate cancellation.
Advises the RPC system that the caller desires that the RPC call be
canceled. The RPC system may cancel it immediately, may wait awhile and
then cancel it, or may not even cancel the call at all. If the call is
canceled, the "done" callback will still be called and the RpcController
will indicate that the call failed at that time.
"""
raise NotImplementedError
# Server-side methods below
def SetFailed(self, reason):
"""Sets a failure reason.
Causes Failed() to return true on the client side. "reason" will be
incorporated into the message returned by ErrorText(). If you find
you need to return machine-readable information about failures, you
should incorporate it into your response protocol buffer and should
NOT call SetFailed().
"""
raise NotImplementedError
def IsCanceled(self):
"""Checks if the client cancelled the RPC.
If true, indicates that the client canceled the RPC, so the server may
as well give up on replying to it. The server should still call the
final "done" callback.
"""
raise NotImplementedError
def NotifyOnCancel(self, callback):
"""Sets a callback to invoke on cancel.
Asks that the given callback be called when the RPC is canceled. The
callback will always be called exactly once. If the RPC completes without
being canceled, the callback will be called after completion. If the RPC
has already been canceled when NotifyOnCancel() is called, the callback
will be called immediately.
NotifyOnCancel() must be called no more than once per request.
"""
raise NotImplementedError
class RpcChannel(object):
"""Abstract interface for an RPC channel.
An RpcChannel represents a communication line to a service which can be used
to call that service's methods. The service may be running on another
machine. Normally, you should not use an RpcChannel directly, but instead
construct a stub {@link Service} wrapping it. Example:
Example:
RpcChannel channel = rpcImpl.Channel("remotehost.example.com:1234")
RpcController controller = rpcImpl.Controller()
MyService service = MyService_Stub(channel)
service.MyMethod(controller, request, callback)
"""
def CallMethod(self, method_descriptor, rpc_controller,
request, response_class, done):
"""Calls the method identified by the descriptor.
Call the given method of the remote service. The signature of this
procedure looks the same as Service.CallMethod(), but the requirements
are less strict in one important way: the request object doesn't have to
be of any specific class as long as its descriptor is method.input_type.
"""
raise NotImplementedError
third_party/google/protobuf/service_reflection.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""Contains metaclasses used to create protocol service and service stub
classes from ServiceDescriptor objects at runtime.
The GeneratedServiceType and GeneratedServiceStubType metaclasses are used to
inject all useful functionality into the classes output by the protocol
compiler at compile-time.
"""
__author__ = 'petar@google.com (Petar Petrov)'
class GeneratedServiceType(type):
"""Metaclass for service classes created at runtime from ServiceDescriptors.
Implementations for all methods described in the Service class are added here
by this class. We also create properties to allow getting/setting all fields
in the protocol message.
The protocol compiler currently uses this metaclass to create protocol service
classes at runtime. Clients can also manually create their own classes at
runtime, as in this example:
mydescriptor = ServiceDescriptor(.....)
class MyProtoService(service.Service):
__metaclass__ = GeneratedServiceType
DESCRIPTOR = mydescriptor
myservice_instance = MyProtoService()
...
"""
_DESCRIPTOR_KEY = 'DESCRIPTOR'
def __init__(cls, name, bases, dictionary):
"""Creates a message service class.
Args:
name: Name of the class (ignored, but required by the metaclass
protocol).
bases: Base classes of the class being constructed.
dictionary: The class dictionary of the class being constructed.
dictionary[_DESCRIPTOR_KEY] must contain a ServiceDescriptor object
describing this protocol service type.
"""
# Don't do anything if this class doesn't have a descriptor. This happens
# when a service class is subclassed.
if GeneratedServiceType._DESCRIPTOR_KEY not in dictionary:
return
descriptor = dictionary[GeneratedServiceType._DESCRIPTOR_KEY]
service_builder = _ServiceBuilder(descriptor)
service_builder.BuildService(cls)
class GeneratedServiceStubType(GeneratedServiceType):
"""Metaclass for service stubs created at runtime from ServiceDescriptors.
This class has similar responsibilities as GeneratedServiceType, except that
it creates the service stub classes.
"""
_DESCRIPTOR_KEY = 'DESCRIPTOR'
def __init__(cls, name, bases, dictionary):
"""Creates a message service stub class.
Args:
name: Name of the class (ignored, here).
bases: Base classes of the class being constructed.
dictionary: The class dictionary of the class being constructed.
dictionary[_DESCRIPTOR_KEY] must contain a ServiceDescriptor object
describing this protocol service type.
"""
super(GeneratedServiceStubType, cls).__init__(name, bases, dictionary)
# Don't do anything if this class doesn't have a descriptor. This happens
# when a service stub is subclassed.
if GeneratedServiceStubType._DESCRIPTOR_KEY not in dictionary:
return
descriptor = dictionary[GeneratedServiceStubType._DESCRIPTOR_KEY]
service_stub_builder = _ServiceStubBuilder(descriptor)
service_stub_builder.BuildServiceStub(cls)
class _ServiceBuilder(object):
"""This class constructs a protocol service class using a service descriptor.
Given a service descriptor, this class constructs a class that represents
the specified service descriptor. One service builder instance constructs
exactly one service class. That means all instances of that class share the
same builder.
"""
def __init__(self, service_descriptor):
"""Initializes an instance of the service class builder.
Args:
service_descriptor: ServiceDescriptor to use when constructing the
service class.
"""
self.descriptor = service_descriptor
def BuildService(self, cls):
"""Constructs the service class.
Args:
cls: The class that will be constructed.
"""
# CallMethod needs to operate with an instance of the Service class. This
# internal wrapper function exists only to be able to pass the service
# instance to the method that does the real CallMethod work.
def _WrapCallMethod(srvc, method_descriptor,
rpc_controller, request, callback):
return self._CallMethod(srvc, method_descriptor,
rpc_controller, request, callback)
self.cls = cls
cls.CallMethod = _WrapCallMethod
cls.GetDescriptor = staticmethod(lambda: self.descriptor)
cls.GetDescriptor.__doc__ = "Returns the service descriptor."
cls.GetRequestClass = self._GetRequestClass
cls.GetResponseClass = self._GetResponseClass
for method in self.descriptor.methods:
setattr(cls, method.name, self._GenerateNonImplementedMethod(method))
def _CallMethod(self, srvc, method_descriptor,
rpc_controller, request, callback):
"""Calls the method described by a given method descriptor.
Args:
srvc: Instance of the service for which this method is called.
method_descriptor: Descriptor that represent the method to call.
rpc_controller: RPC controller to use for this method's execution.
request: Request protocol message.
callback: A callback to invoke after the method has completed.
"""
if method_descriptor.containing_service != self.descriptor:
raise RuntimeError(
'CallMethod() given method descriptor for wrong service type.')
method = getattr(srvc, method_descriptor.name)
return method(rpc_controller, request, callback)
def _GetRequestClass(self, method_descriptor):
"""Returns the class of the request protocol message.
Args:
method_descriptor: Descriptor of the method for which to return the
request protocol message class.
Returns:
A class that represents the input protocol message of the specified
method.
"""
if method_descriptor.containing_service != self.descriptor:
raise RuntimeError(
'GetRequestClass() given method descriptor for wrong service type.')
return method_descriptor.input_type._concrete_class
def _GetResponseClass(self, method_descriptor):
"""Returns the class of the response protocol message.
Args:
method_descriptor: Descriptor of the method for which to return the
response protocol message class.
Returns:
A class that represents the output protocol message of the specified
method.
"""
if method_descriptor.containing_service != self.descriptor:
raise RuntimeError(
'GetResponseClass() given method descriptor for wrong service type.')
return method_descriptor.output_type._concrete_class
def _GenerateNonImplementedMethod(self, method):
"""Generates and returns a method that can be set for a service methods.
Args:
method: Descriptor of the service method for which a method is to be
generated.
Returns:
A method that can be added to the service class.
"""
return lambda inst, rpc_controller, request, callback: (
self._NonImplementedMethod(method.name, rpc_controller, callback))
def _NonImplementedMethod(self, method_name, rpc_controller, callback):
"""The body of all methods in the generated service class.
Args:
method_name: Name of the method being executed.
rpc_controller: RPC controller used to execute this method.
callback: A callback which will be invoked when the method finishes.
"""
rpc_controller.SetFailed('Method %s not implemented.' % method_name)
callback(None)
class _ServiceStubBuilder(object):
"""Constructs a protocol service stub class using a service descriptor.
Given a service descriptor, this class constructs a suitable stub class.
A stub is just a type-safe wrapper around an RpcChannel which emulates a
local implementation of the service.
One service stub builder instance constructs exactly one class. It means all
instances of that class share the same service stub builder.
"""
def __init__(self, service_descriptor):
"""Initializes an instance of the service stub class builder.
Args:
service_descriptor: ServiceDescriptor to use when constructing the
stub class.
"""
self.descriptor = service_descriptor
def BuildServiceStub(self, cls):
"""Constructs the stub class.
Args:
cls: The class that will be constructed.
"""
def _ServiceStubInit(stub, rpc_channel):
stub.rpc_channel = rpc_channel
self.cls = cls
cls.__init__ = _ServiceStubInit
for method in self.descriptor.methods:
setattr(cls, method.name, self._GenerateStubMethod(method))
def _GenerateStubMethod(self, method):
return (lambda inst, rpc_controller, request, callback=None:
self._StubMethod(inst, method, rpc_controller, request, callback))
def _StubMethod(self, stub, method_descriptor,
rpc_controller, request, callback):
"""The body of all service methods in the generated stub class.
Args:
stub: Stub instance.
method_descriptor: Descriptor of the invoked method.
rpc_controller: Rpc controller to execute the method.
request: Request protocol message.
callback: A callback to execute when the method finishes.
Returns:
Response message (in case of blocking call).
"""
return stub.rpc_channel.CallMethod(
method_descriptor, rpc_controller, request,
method_descriptor.output_type._concrete_class, callback)
third_party/google/protobuf/symbol_database.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
"""A database of Python protocol buffer generated symbols.
SymbolDatabase makes it easy to create new instances of a registered type, given
only the type's protocol buffer symbol name. Once all symbols are registered,
they can be accessed using either the MessageFactory interface which
SymbolDatabase exposes, or the DescriptorPool interface of the underlying
pool.
Example usage:
db = symbol_database.SymbolDatabase()
# Register symbols of interest, from one or multiple files.
db.RegisterFileDescriptor(my_proto_pb2.DESCRIPTOR)
db.RegisterMessage(my_proto_pb2.MyMessage)
db.RegisterEnumDescriptor(my_proto_pb2.MyEnum.DESCRIPTOR)
# The database can be used as a MessageFactory, to generate types based on
# their name:
types = db.GetMessages(['my_proto.proto'])
my_message_instance = types['MyMessage']()
# The database's underlying descriptor pool can be queried, so it's not
# necessary to know a type's filename to be able to generate it:
filename = db.pool.FindFileContainingSymbol('MyMessage')
my_message_instance = db.GetMessages([filename])['MyMessage']()
# This functionality is also provided directly via a convenience method:
my_message_instance = db.GetSymbol('MyMessage')()
"""
from google.protobuf import descriptor_pool
class SymbolDatabase(object):
"""A database of Python generated symbols.
SymbolDatabase also models message_factory.MessageFactory.
The symbol database can be used to keep a global registry of all protocol
buffer types used within a program.
"""
def __init__(self):
"""Constructor."""
self._symbols = {}
self._symbols_by_file = {}
self.pool = descriptor_pool.DescriptorPool()
def RegisterMessage(self, message):
"""Registers the given message type in the local database.
Args:
message: a message.Message, to be registered.
Returns:
The provided message.
"""
desc = message.DESCRIPTOR
self._symbols[desc.full_name] = message
if desc.file.name not in self._symbols_by_file:
self._symbols_by_file[desc.file.name] = {}
self._symbols_by_file[desc.file.name][desc.full_name] = message
self.pool.AddDescriptor(desc)
return message
def RegisterEnumDescriptor(self, enum_descriptor):
"""Registers the given enum descriptor in the local database.
Args:
enum_descriptor: a descriptor.EnumDescriptor.
Returns:
The provided descriptor.
"""
self.pool.AddEnumDescriptor(enum_descriptor)
return enum_descriptor
def RegisterFileDescriptor(self, file_descriptor):
"""Registers the given file descriptor in the local database.
Args:
file_descriptor: a descriptor.FileDescriptor.
Returns:
The provided descriptor.
"""
self.pool.AddFileDescriptor(file_descriptor)
def GetSymbol(self, symbol):
"""Tries to find a symbol in the local database.
Currently, this method only returns message.Message instances, however, if
may be extended in future to support other symbol types.
Args:
symbol: A str, a protocol buffer symbol.
Returns:
A Python class corresponding to the symbol.
Raises:
KeyError: if the symbol could not be found.
"""
return self._symbols[symbol]
def GetPrototype(self, descriptor):
"""Builds a proto2 message class based on the passed in descriptor.
Passing a descriptor with a fully qualified name matching a previous
invocation will cause the same class to be returned.
Args:
descriptor: The descriptor to build from.
Returns:
A class describing the passed in descriptor.
"""
return self.GetSymbol(descriptor.full_name)
def GetMessages(self, files):
"""Gets all the messages from a specified file.
This will find and resolve dependencies, failing if they are not registered
in the symbol database.
Args:
files: The file names to extract messages from.
Returns:
A dictionary mapping proto names to the message classes. This will include
any dependent messages as well as any messages defined in the same file as
a specified message.
Raises:
KeyError: if a file could not be found.
"""
result = {}
for f in files:
result.update(self._symbols_by_file[f])
return result
_DEFAULT = SymbolDatabase()
def Default():
"""Returns the default SymbolDatabase."""
return _DEFAULT
third_party/google/protobuf/text_encoding.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
"""Encoding related utilities."""
import re
import sys ##PY25
# Lookup table for utf8
_cescape_utf8_to_str = [chr(i) for i in xrange(0, 256)]
_cescape_utf8_to_str[9] = r'\t' # optional escape
_cescape_utf8_to_str[10] = r'\n' # optional escape
_cescape_utf8_to_str[13] = r'\r' # optional escape
_cescape_utf8_to_str[39] = r"\'" # optional escape
_cescape_utf8_to_str[34] = r'\"' # necessary escape
_cescape_utf8_to_str[92] = r'\\' # necessary escape
# Lookup table for non-utf8, with necessary escapes at (o >= 127 or o < 32)
_cescape_byte_to_str = ([r'\%03o' % i for i in xrange(0, 32)] +
[chr(i) for i in xrange(32, 127)] +
[r'\%03o' % i for i in xrange(127, 256)])
_cescape_byte_to_str[9] = r'\t' # optional escape
_cescape_byte_to_str[10] = r'\n' # optional escape
_cescape_byte_to_str[13] = r'\r' # optional escape
_cescape_byte_to_str[39] = r"\'" # optional escape
_cescape_byte_to_str[34] = r'\"' # necessary escape
_cescape_byte_to_str[92] = r'\\' # necessary escape
def CEscape(text, as_utf8):
"""Escape a bytes string for use in an ascii protocol buffer.
text.encode('string_escape') does not seem to satisfy our needs as it
encodes unprintable characters using two-digit hex escapes whereas our
C++ unescaping function allows hex escapes to be any length. So,
"\0011".encode('string_escape') ends up being "\\x011", which will be
decoded in C++ as a single-character string with char code 0x11.
Args:
text: A byte string to be escaped
as_utf8: Specifies if result should be returned in UTF-8 encoding
Returns:
Escaped string
"""
# PY3 hack: make Ord work for str and bytes:
# //platforms/networking/data uses unicode here, hence basestring.
Ord = ord if isinstance(text, basestring) else lambda x: x
if as_utf8:
return ''.join(_cescape_utf8_to_str[Ord(c)] for c in text)
return ''.join(_cescape_byte_to_str[Ord(c)] for c in text)
_CUNESCAPE_HEX = re.compile(r'(\\+)x([0-9a-fA-F])(?![0-9a-fA-F])')
_cescape_highbit_to_str = ([chr(i) for i in range(0, 127)] +
[r'\%03o' % i for i in range(127, 256)])
def CUnescape(text):
"""Unescape a text string with C-style escape sequences to UTF-8 bytes."""
def ReplaceHex(m):
# Only replace the match if the number of leading back slashes is odd. i.e.
# the slash itself is not escaped.
if len(m.group(1)) & 1:
return m.group(1) + 'x0' + m.group(2)
return m.group(0)
# This is required because the 'string_escape' encoding doesn't
# allow single-digit hex escapes (like '\xf').
result = _CUNESCAPE_HEX.sub(ReplaceHex, text)
if sys.version_info[0] < 3: ##PY25
##!PY25 if str is bytes: # PY2
return result.decode('string_escape')
result = ''.join(_cescape_highbit_to_str[ord(c)] for c in result)
return (result.encode('ascii') # Make it bytes to allow decode.
.decode('unicode_escape')
# Make it bytes again to return the proper type.
.encode('raw_unicode_escape'))
third_party/google/protobuf/text_format.py 0 → 100644
View file @ dc128319
# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. All rights reserved.
# http://code.google.com/p/protobuf/
#
# 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.
#PY25 compatible for GAE.
#
# Copyright 2007 Google Inc. All Rights Reserved.
"""Contains routines for printing protocol messages in text format."""
__author__ = 'kenton@google.com (Kenton Varda)'
import cStringIO
import re
from google.protobuf.internal import type_checkers
from google.protobuf import descriptor
from google.protobuf import text_encoding
__all__ = ['MessageToString', 'PrintMessage', 'PrintField',
'PrintFieldValue', 'Merge']
_INTEGER_CHECKERS = (type_checkers.Uint32ValueChecker(),
type_checkers.Int32ValueChecker(),
type_checkers.Uint64ValueChecker(),
type_checkers.Int64ValueChecker())
_FLOAT_INFINITY = re.compile('-?inf(?:inity)?f?', re.IGNORECASE)
_FLOAT_NAN = re.compile('nanf?', re.IGNORECASE)
_FLOAT_TYPES = frozenset([descriptor.FieldDescriptor.CPPTYPE_FLOAT,
descriptor.FieldDescriptor.CPPTYPE_DOUBLE])
class Error(Exception):
"""Top-level module error for text_format."""
class ParseError(Error):
"""Thrown in case of ASCII parsing error."""
def MessageToString(message, as_utf8=False, as_one_line=False,
pointy_brackets=False, use_index_order=False,
float_format=None):
"""Convert protobuf message to text format.
Floating point values can be formatted compactly with 15 digits of
precision (which is the most that IEEE 754 "double" can guarantee)
using float_format='.15g'.
Args:
message: The protocol buffers message.
as_utf8: Produce text output in UTF8 format.
as_one_line: Don't introduce newlines between fields.
pointy_brackets: If True, use angle brackets instead of curly braces for
nesting.
use_index_order: If True, print fields of a proto message using the order
defined in source code instead of the field number. By default, use the
field number order.
float_format: If set, use this to specify floating point number formatting
(per the "Format Specification Mini-Language"); otherwise, str() is used.
Returns:
A string of the text formatted protocol buffer message.
"""
out = cStringIO.StringIO()
PrintMessage(message, out, as_utf8=as_utf8, as_one_line=as_one_line,
pointy_brackets=pointy_brackets,
use_index_order=use_index_order,
float_format=float_format)
result = out.getvalue()
out.close()
if as_one_line:
return result.rstrip()
return result
def PrintMessage(message, out, indent=0, as_utf8=False, as_one_line=False,
pointy_brackets=False, use_index_order=False,
float_format=None):
fields = message.ListFields()
if use_index_order:
fields.sort(key=lambda x: x[0].index)
for field, value in fields:
if field.label == descriptor.FieldDescriptor.LABEL_REPEATED:
for element in value:
PrintField(field, element, out, indent, as_utf8, as_one_line,
pointy_brackets=pointy_brackets,
float_format=float_format)
else:
PrintField(field, value, out, indent, as_utf8, as_one_line,
pointy_brackets=pointy_brackets,
float_format=float_format)
def PrintField(field, value, out, indent=0, as_utf8=False, as_one_line=False,
pointy_brackets=False, float_format=None):
"""Print a single field name/value pair. For repeated fields, the value
should be a single element."""
out.write(' ' * indent)
if field.is_extension:
out.write('[')
if (field.containing_type.GetOptions().message_set_wire_format and
field.type == descriptor.FieldDescriptor.TYPE_MESSAGE and
field.message_type == field.extension_scope and
field.label == descriptor.FieldDescriptor.LABEL_OPTIONAL):
out.write(field.message_type.full_name)
else:
out.write(field.full_name)
out.write(']')
elif field.type == descriptor.FieldDescriptor.TYPE_GROUP:
# For groups, use the capitalized name.
out.write(field.message_type.name)
else:
out.write(field.name)
if field.cpp_type != descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
# The colon is optional in this case, but our cross-language golden files
# don't include it.
out.write(': ')
PrintFieldValue(field, value, out, indent, as_utf8, as_one_line,
pointy_brackets=pointy_brackets,
float_format=float_format)
if as_one_line:
out.write(' ')
else:
out.write('\n')
def PrintFieldValue(field, value, out, indent=0, as_utf8=False,
as_one_line=False, pointy_brackets=False,
float_format=None):
"""Print a single field value (not including name). For repeated fields,
the value should be a single element."""
if pointy_brackets:
openb = '<'
closeb = '>'
else:
openb = '{'
closeb = '}'
if field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
if as_one_line:
out.write(' %s ' % openb)
PrintMessage(value, out, indent, as_utf8, as_one_line,
pointy_brackets=pointy_brackets,
float_format=float_format)
out.write(closeb)
else:
out.write(' %s\n' % openb)
PrintMessage(value, out, indent + 2, as_utf8, as_one_line,
pointy_brackets=pointy_brackets,
float_format=float_format)
out.write(' ' * indent + closeb)
elif field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_ENUM:
enum_value = field.enum_type.values_by_number.get(value, None)
if enum_value is not None:
out.write(enum_value.name)
else:
out.write(str(value))
elif field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_STRING:
out.write('\"')
if isinstance(value, unicode):
out_value = value.encode('utf-8')
else:
out_value = value
if field.type == descriptor.FieldDescriptor.TYPE_BYTES:
# We need to escape non-UTF8 chars in TYPE_BYTES field.
out_as_utf8 = False
else:
out_as_utf8 = as_utf8
out.write(text_encoding.CEscape(out_value, out_as_utf8))
out.write('\"')
elif field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_BOOL:
if value:
out.write('true')
else:
out.write('false')
elif field.cpp_type in _FLOAT_TYPES and float_format is not None:
out.write('{1:{0}}'.format(float_format, value))
else:
out.write(str(value))
def _ParseOrMerge(lines, message, allow_multiple_scalars):
"""Converts an ASCII representation of a protocol message into a message.
Args:
lines: Lines of a message's ASCII representation.
message: A protocol buffer message to merge into.
allow_multiple_scalars: Determines if repeated values for a non-repeated
field are permitted, e.g., the string "foo: 1 foo: 2" for a
required/optional field named "foo".
Raises:
ParseError: On ASCII parsing problems.
"""
tokenizer = _Tokenizer(lines)
while not tokenizer.AtEnd():
_MergeField(tokenizer, message, allow_multiple_scalars)
def Parse(text, message):
"""Parses an ASCII representation of a protocol message into a message.
Args:
text: Message ASCII representation.
message: A protocol buffer message to merge into.
Returns:
The same message passed as argument.
Raises:
ParseError: On ASCII parsing problems.
"""
if not isinstance(text, str): text = text.decode('utf-8')
return ParseLines(text.split('\n'), message)
def Merge(text, message):
"""Parses an ASCII representation of a protocol message into a message.
Like Parse(), but allows repeated values for a non-repeated field, and uses
the last one.
Args:
text: Message ASCII representation.
message: A protocol buffer message to merge into.
Returns:
The same message passed as argument.
Raises:
ParseError: On ASCII parsing problems.
"""
return MergeLines(text.split('\n'), message)
def ParseLines(lines, message):
"""Parses an ASCII representation of a protocol message into a message.
Args:
lines: An iterable of lines of a message's ASCII representation.
message: A protocol buffer message to merge into.
Returns:
The same message passed as argument.
Raises:
ParseError: On ASCII parsing problems.
"""
_ParseOrMerge(lines, message, False)
return message
def MergeLines(lines, message):
"""Parses an ASCII representation of a protocol message into a message.
Args:
lines: An iterable of lines of a message's ASCII representation.
message: A protocol buffer message to merge into.
Returns:
The same message passed as argument.
Raises:
ParseError: On ASCII parsing problems.
"""
_ParseOrMerge(lines, message, True)
return message
def _MergeField(tokenizer, message, allow_multiple_scalars):
"""Merges a single protocol message field into a message.
Args:
tokenizer: A tokenizer to parse the field name and values.
message: A protocol message to record the data.
allow_multiple_scalars: Determines if repeated values for a non-repeated
field are permitted, e.g., the string "foo: 1 foo: 2" for a
required/optional field named "foo".
Raises:
ParseError: In case of ASCII parsing problems.
"""
message_descriptor = message.DESCRIPTOR
if tokenizer.TryConsume('['):
name = [tokenizer.ConsumeIdentifier()]
while tokenizer.TryConsume('.'):
name.append(tokenizer.ConsumeIdentifier())
name = '.'.join(name)
if not message_descriptor.is_extendable:
raise tokenizer.ParseErrorPreviousToken(
'Message type "%s" does not have extensions.' %
message_descriptor.full_name)
# pylint: disable=protected-access
field = message.Extensions._FindExtensionByName(name)
# pylint: enable=protected-access
if not field:
raise tokenizer.ParseErrorPreviousToken(
'Extension "%s" not registered.' % name)
elif message_descriptor != field.containing_type:
raise tokenizer.ParseErrorPreviousToken(
'Extension "%s" does not extend message type "%s".' % (
name, message_descriptor.full_name))
tokenizer.Consume(']')
else:
name = tokenizer.ConsumeIdentifier()
field = message_descriptor.fields_by_name.get(name, None)
# Group names are expected to be capitalized as they appear in the
# .proto file, which actually matches their type names, not their field
# names.
if not field:
field = message_descriptor.fields_by_name.get(name.lower(), None)
if field and field.type != descriptor.FieldDescriptor.TYPE_GROUP:
field = None
if (field and field.type == descriptor.FieldDescriptor.TYPE_GROUP and
field.message_type.name != name):
field = None
if not field:
raise tokenizer.ParseErrorPreviousToken(
'Message type "%s" has no field named "%s".' % (
message_descriptor.full_name, name))
if field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
tokenizer.TryConsume(':')
if tokenizer.TryConsume('<'):
end_token = '>'
else:
tokenizer.Consume('{')
end_token = '}'
if field.label == descriptor.FieldDescriptor.LABEL_REPEATED:
if field.is_extension:
sub_message = message.Extensions[field].add()
else:
sub_message = getattr(message, field.name).add()
else:
if field.is_extension:
sub_message = message.Extensions[field]
else:
sub_message = getattr(message, field.name)
sub_message.SetInParent()
while not tokenizer.TryConsume(end_token):
if tokenizer.AtEnd():
raise tokenizer.ParseErrorPreviousToken('Expected "%s".' % (end_token))
_MergeField(tokenizer, sub_message, allow_multiple_scalars)
else:
_MergeScalarField(tokenizer, message, field, allow_multiple_scalars)
# For historical reasons, fields may optionally be separated by commas or
# semicolons.
if not tokenizer.TryConsume(','):
tokenizer.TryConsume(';')
def _MergeScalarField(tokenizer, message, field, allow_multiple_scalars):
"""Merges a single protocol message scalar field into a message.
Args:
tokenizer: A tokenizer to parse the field value.
message: A protocol message to record the data.
field: The descriptor of the field to be merged.
allow_multiple_scalars: Determines if repeated values for a non-repeated
field are permitted, e.g., the string "foo: 1 foo: 2" for a
required/optional field named "foo".
Raises:
ParseError: In case of ASCII parsing problems.
RuntimeError: On runtime errors.
"""
tokenizer.Consume(':')
value = None
if field.type in (descriptor.FieldDescriptor.TYPE_INT32,
descriptor.FieldDescriptor.TYPE_SINT32,
descriptor.FieldDescriptor.TYPE_SFIXED32):
value = tokenizer.ConsumeInt32()
elif field.type in (descriptor.FieldDescriptor.TYPE_INT64,
descriptor.FieldDescriptor.TYPE_SINT64,
descriptor.FieldDescriptor.TYPE_SFIXED64):
value = tokenizer.ConsumeInt64()
elif field.type in (descriptor.FieldDescriptor.TYPE_UINT32,
descriptor.FieldDescriptor.TYPE_FIXED32):
value = tokenizer.ConsumeUint32()
elif field.type in (descriptor.FieldDescriptor.TYPE_UINT64,
descriptor.FieldDescriptor.TYPE_FIXED64):
value = tokenizer.ConsumeUint64()
elif field.type in (descriptor.FieldDescriptor.TYPE_FLOAT,
descriptor.FieldDescriptor.TYPE_DOUBLE):
value = tokenizer.ConsumeFloat()
elif field.type == descriptor.FieldDescriptor.TYPE_BOOL:
value = tokenizer.ConsumeBool()
elif field.type == descriptor.FieldDescriptor.TYPE_STRING:
value = tokenizer.ConsumeString()
elif field.type == descriptor.FieldDescriptor.TYPE_BYTES:
value = tokenizer.ConsumeByteString()
elif field.type == descriptor.FieldDescriptor.TYPE_ENUM:
value = tokenizer.ConsumeEnum(field)
else:
raise RuntimeError('Unknown field type %d' % field.type)
if field.label == descriptor.FieldDescriptor.LABEL_REPEATED:
if field.is_extension:
message.Extensions[field].append(value)
else:
getattr(message, field.name).append(value)
else:
if field.is_extension:
if not allow_multiple_scalars and message.HasExtension(field):
raise tokenizer.ParseErrorPreviousToken(
'Message type "%s" should not have multiple "%s" extensions.' %
(message.DESCRIPTOR.full_name, field.full_name))
else:
message.Extensions[field] = value
else:
if not allow_multiple_scalars and message.HasField(field.name):
raise tokenizer.ParseErrorPreviousToken(
'Message type "%s" should not have multiple "%s" fields.' %
(message.DESCRIPTOR.full_name, field.name))
else:
setattr(message, field.name, value)
class _Tokenizer(object):
"""Protocol buffer ASCII representation tokenizer.
This class handles the lower level string parsing by splitting it into
meaningful tokens.
It was directly ported from the Java protocol buffer API.
"""
_WHITESPACE = re.compile('(\\s|(#.*$))+', re.MULTILINE)
_TOKEN = re.compile(
'[a-zA-Z_][0-9a-zA-Z_+-]*|' # an identifier
'[0-9+-][0-9a-zA-Z_.+-]*|' # a number
'\"([^\"\n\\\\]|\\\\.)*(\"|\\\\?$)|' # a double-quoted string
'\'([^\'\n\\\\]|\\\\.)*(\'|\\\\?$)') # a single-quoted string
_IDENTIFIER = re.compile(r'\w+')
def __init__(self, lines):
self._position = 0
self._line = -1
self._column = 0
self._token_start = None
self.token = ''
self._lines = iter(lines)
self._current_line = ''
self._previous_line = 0
self._previous_column = 0
self._more_lines = True
self._SkipWhitespace()
self.NextToken()
def AtEnd(self):
"""Checks the end of the text was reached.
Returns:
True iff the end was reached.
"""
return not self.token
def _PopLine(self):
while len(self._current_line) <= self._column:
try:
self._current_line = self._lines.next()
except StopIteration:
self._current_line = ''
self._more_lines = False
return
else:
self._line += 1
self._column = 0
def _SkipWhitespace(self):
while True:
self._PopLine()
match = self._WHITESPACE.match(self._current_line, self._column)
if not match:
break
length = len(match.group(0))
self._column += length
def TryConsume(self, token):
"""Tries to consume a given piece of text.
Args:
token: Text to consume.
Returns:
True iff the text was consumed.
"""
if self.token == token:
self.NextToken()
return True
return False
def Consume(self, token):
"""Consumes a piece of text.
Args:
token: Text to consume.
Raises:
ParseError: If the text couldn't be consumed.
"""
if not self.TryConsume(token):
raise self._ParseError('Expected "%s".' % token)
def ConsumeIdentifier(self):
"""Consumes protocol message field identifier.
Returns:
Identifier string.
Raises:
ParseError: If an identifier couldn't be consumed.
"""
result = self.token
if not self._IDENTIFIER.match(result):
raise self._ParseError('Expected identifier.')
self.NextToken()
return result
def ConsumeInt32(self):
"""Consumes a signed 32bit integer number.
Returns:
The integer parsed.
Raises:
ParseError: If a signed 32bit integer couldn't be consumed.
"""
try:
result = ParseInteger(self.token, is_signed=True, is_long=False)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeUint32(self):
"""Consumes an unsigned 32bit integer number.
Returns:
The integer parsed.
Raises:
ParseError: If an unsigned 32bit integer couldn't be consumed.
"""
try:
result = ParseInteger(self.token, is_signed=False, is_long=False)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeInt64(self):
"""Consumes a signed 64bit integer number.
Returns:
The integer parsed.
Raises:
ParseError: If a signed 64bit integer couldn't be consumed.
"""
try:
result = ParseInteger(self.token, is_signed=True, is_long=True)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeUint64(self):
"""Consumes an unsigned 64bit integer number.
Returns:
The integer parsed.
Raises:
ParseError: If an unsigned 64bit integer couldn't be consumed.
"""
try:
result = ParseInteger(self.token, is_signed=False, is_long=True)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeFloat(self):
"""Consumes an floating point number.
Returns:
The number parsed.
Raises:
ParseError: If a floating point number couldn't be consumed.
"""
try:
result = ParseFloat(self.token)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeBool(self):
"""Consumes a boolean value.
Returns:
The bool parsed.
Raises:
ParseError: If a boolean value couldn't be consumed.
"""
try:
result = ParseBool(self.token)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeString(self):
"""Consumes a string value.
Returns:
The string parsed.
Raises:
ParseError: If a string value couldn't be consumed.
"""
the_bytes = self.ConsumeByteString()
try:
return unicode(the_bytes, 'utf-8')
except UnicodeDecodeError, e:
raise self._StringParseError(e)
def ConsumeByteString(self):
"""Consumes a byte array value.
Returns:
The array parsed (as a string).
Raises:
ParseError: If a byte array value couldn't be consumed.
"""
the_list = [self._ConsumeSingleByteString()]
while self.token and self.token[0] in ('\'', '"'):
the_list.append(self._ConsumeSingleByteString())
return ''.encode('latin1').join(the_list) ##PY25
##!PY25 return b''.join(the_list)
def _ConsumeSingleByteString(self):
"""Consume one token of a string literal.
String literals (whether bytes or text) can come in multiple adjacent
tokens which are automatically concatenated, like in C or Python. This
method only consumes one token.
"""
text = self.token
if len(text) < 1 or text[0] not in ('\'', '"'):
raise self._ParseError('Expected string.')
if len(text) < 2 or text[-1] != text[0]:
raise self._ParseError('String missing ending quote.')
try:
result = text_encoding.CUnescape(text[1:-1])
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ConsumeEnum(self, field):
try:
result = ParseEnum(field, self.token)
except ValueError, e:
raise self._ParseError(str(e))
self.NextToken()
return result
def ParseErrorPreviousToken(self, message):
"""Creates and *returns* a ParseError for the previously read token.
Args:
message: A message to set for the exception.
Returns:
A ParseError instance.
"""
return ParseError('%d:%d : %s' % (
self._previous_line + 1, self._previous_column + 1, message))
def _ParseError(self, message):
"""Creates and *returns* a ParseError for the current token."""
return ParseError('%d:%d : %s' % (
self._line + 1, self._column + 1, message))
def _StringParseError(self, e):
return self._ParseError('Couldn\'t parse string: ' + str(e))
def NextToken(self):
"""Reads the next meaningful token."""
self._previous_line = self._line
self._previous_column = self._column
self._column += len(self.token)
self._SkipWhitespace()
if not self._more_lines:
self.token = ''
return
match = self._TOKEN.match(self._current_line, self._column)
if match:
token = match.group(0)
self.token = token
else:
self.token = self._current_line[self._column]
def ParseInteger(text, is_signed=False, is_long=False):
"""Parses an integer.
Args:
text: The text to parse.
is_signed: True if a signed integer must be parsed.
is_long: True if a long integer must be parsed.
Returns:
The integer value.
Raises:
ValueError: Thrown Iff the text is not a valid integer.
"""
# Do the actual parsing. Exception handling is propagated to caller.
try:
# We force 32-bit values to int and 64-bit values to long to make
# alternate implementations where the distinction is more significant
# (e.g. the C++ implementation) simpler.
if is_long:
result = long(text, 0)
else:
result = int(text, 0)
except ValueError:
raise ValueError('Couldn\'t parse integer: %s' % text)
# Check if the integer is sane. Exceptions handled by callers.
checker = _INTEGER_CHECKERS[2 * int(is_long) + int(is_signed)]
checker.CheckValue(result)
return result
def ParseFloat(text):
"""Parse a floating point number.
Args:
text: Text to parse.
Returns:
The number parsed.
Raises:
ValueError: If a floating point number couldn't be parsed.
"""
try:
# Assume Python compatible syntax.
return float(text)
except ValueError:
# Check alternative spellings.
if _FLOAT_INFINITY.match(text):
if text[0] == '-':
return float('-inf')
else:
return float('inf')
elif _FLOAT_NAN.match(text):
return float('nan')
else:
# assume '1.0f' format
try:
return float(text.rstrip('f'))
except ValueError:
raise ValueError('Couldn\'t parse float: %s' % text)
def ParseBool(text):
"""Parse a boolean value.
Args:
text: Text to parse.
Returns:
Boolean values parsed
Raises:
ValueError: If text is not a valid boolean.
"""
if text in ('true', 't', '1'):
return True
elif text in ('false', 'f', '0'):
return False
else:
raise ValueError('Expected "true" or "false".')
def ParseEnum(field, value):
"""Parse an enum value.
The value can be specified by a number (the enum value), or by
a string literal (the enum name).
Args:
field: Enum field descriptor.
value: String value.
Returns:
Enum value number.
Raises:
ValueError: If the enum value could not be parsed.
"""
enum_descriptor = field.enum_type
try:
number = int(value, 0)
except ValueError:
# Identifier.
enum_value = enum_descriptor.values_by_name.get(value, None)
if enum_value is None:
raise ValueError(
'Enum type "%s" has no value named %s.' % (
enum_descriptor.full_name, value))
else:
# Numeric value.
enum_value = enum_descriptor.values_by_number.get(number, None)
if enum_value is None:
raise ValueError(
'Enum type "%s" has no value with number %d.' % (
enum_descriptor.full_name, number))
return enum_value.number
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