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#!/bin/sh
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# Copyright 2017 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -ex
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cd ${IWYU_ROOT}
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export PATH=${PATH}:${IWYU_ROOT}/iwyu_build/bin
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rm -rf iwyu || true
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git clone https://github.com/include-what-you-use/include-what-you-use.git iwyu
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# latest commit on the clang 11 branch
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cd ${IWYU_ROOT}/iwyu && git checkout fbd921d6640bf1b18fe5a8a895636215367eb6b9
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mkdir -p ${IWYU_ROOT}/iwyu_build && cd ${IWYU_ROOT}/iwyu_build && cmake -G "Unix Makefiles" ${IWYU_ROOT}/iwyu && make
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cd ${IWYU_ROOT}
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cat compile_commands.json | sed "s,\"file\": \",\"file\": \"${IWYU_ROOT}/,g" > compile_commands_for_iwyu.json
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export ENABLED_MODULES='
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src/core/lib/avl
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src/core/lib/channel
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src/core/lib/config
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src/core/lib/slice
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src/core/lib/resource_quota
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src/core/lib/promise
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src/core/lib/uri
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'
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export INCLUSION_REGEX=`echo $ENABLED_MODULES | sed 's/ /|/g' | sed 's,\\(.*\\),^(\\1)/,g'`
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# figure out which files to include
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cat compile_commands.json | jq -r '.[].file' \
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| grep -E $INCLUSION_REGEX \
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| grep -v -E "/upb-generated/|/upbdefs-generated/" \
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| sort \
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| tee iwyu_files.txt
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# run iwyu, filtering out changes to port_platform.h
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xargs -a iwyu_files.txt -I FILES ${IWYU_ROOT}/iwyu/iwyu_tool.py -p compile_commands_for_iwyu.json -j 16 FILES -- -Xiwyu --no_fwd_decls \
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| grep -v -E "port_platform.h" \
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| tee iwyu.out
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# apply the suggested changes
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${IWYU_ROOT}/iwyu/fix_includes.py --nocomments < iwyu.out || true
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# reformat sources, since iwyu gets this wrong
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xargs -a iwyu_files.txt ${CLANG_FORMAT:-clang-format} -i
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# TODO(ctiller): expand this to match the clang-tidy directories:
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# | grep -E "(^include/|^src/core/|^src/cpp/|^test/core/|^test/cpp/)"
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git diff --exit-code > /dev/null
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