add .clang-tidy

# Licensed to the Apache Software Foundation (ASF) under one

# or more contributor license agreements.  See the NOTICE file

# distributed with this work for additional information

# regarding copyright ownership.  The ASF licenses this file

# to you under the Apache License, Version 2.0 (the

# "License"); you may not use this file except in compliance

# with the License.  You may obtain a copy of the License at

#

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

#

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

# software distributed under the License is distributed on an

# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

# KIND, either express or implied.  See the License for the

# specific language governing permissions and limitations

# under the License.

---

Checks:          'clang-diagnostic-*,clang-analyzer-*,-clang-analyzer-alpha*,google-*,modernize-*,readability-*'

# produce HeaderFilterRegex from cpp/build-support/lint_exclusions.txt with:

# echo -n '^('; sed -e 's/*/\.*/g' cpp/build-support/lint_exclusions.txt | tr '\n' '|'; echo ')$'

HeaderFilterRegex: '^(.*cmake-build-debug.*|.*cmake-build-release.*|.*cmake_build.*|.*src/thirdparty.*|.*src/core/thirdparty.*|.*src/grpc.*|)$'

AnalyzeTemporaryDtors: true

CheckOptions:

  - key:             google-readability-braces-around-statements.ShortStatementLines

    value:           '1'

  - key:             google-readability-function-size.StatementThreshold

    value:           '800'

  - key:             google-readability-namespace-comments.ShortNamespaceLines

    value:           '10'

  - key:             google-readability-namespace-comments.SpacesBeforeComments

    value:           '2'