mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-27 10:30:10 +01:00
Jon Meow
c94ff74ea2
Not sure why this affects include ordering, but it makes execution a _lot_ faster.
70 lines
2.3 KiB
Bash
Executable File
70 lines
2.3 KiB
Bash
Executable File
#!/bin/bash -eux
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#
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# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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# Exceptions. See /LICENSE for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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# Runs an example migration of woff2 C++ code.
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# cd to the carbon-lang root.
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cd "$(dirname "$0")/../../.."
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EXAMPLE="${PWD}/third_party/examples/woff2"
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# Remove any previous conversion. Each time this is run, it should demonstrate
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# on a fresh copy of woff2.
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rm -rf "${EXAMPLE}/carbon/"
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# Initialize the carbon directory with C++ code only.
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mkdir -p "${EXAMPLE}/carbon/"
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for x in LICENSE include src; do
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cp -R "${EXAMPLE}/original/${x}" "${EXAMPLE}/carbon/${x}"
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done
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# Copy files into the carbon directory to simplify the setup.
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cp "${EXAMPLE}/BUILD.original" \
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"${EXAMPLE}/carbon/BUILD"
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cp "${EXAMPLE}/WORKSPACE.original" \
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"${EXAMPLE}/carbon/WORKSPACE"
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# Kludge for adding LLVM include paths into the compile flags.
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# TODO: Find better solution.
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COMPILE_FLAGS=($(cat "${EXAMPLE}/compile_flags.carbon.txt" | sed 's/"/\\"/g'))
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for x in $(
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clang++ -Wp,-v -xc++ -stdlib=libc++ - -fsyntax-only < /dev/null 2>&1 |
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grep /llvm/); do
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COMPILE_FLAGS+=("-isystem")
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COMPILE_FLAGS+=("${x}")
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done
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# Construct a compilation database for use by run-clang-tidy.py.
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COMPDB="${EXAMPLE}/carbon/compile_commands.json"
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echo "[" > "${COMPDB}"
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for f in $(find "${EXAMPLE}/carbon" -regex ".*\.\(cc\|h\)"); do
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echo "{ \"file\": \"$(realpath --relative-to "${EXAMPLE}/carbon" ${f})\"," >> "${COMPDB}"
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echo " \"directory\": \"${EXAMPLE}/carbon\"," >> "${COMPDB}"
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echo " \"arguments\": [" >> "${COMPDB}"
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echo " \"clang++\"," >> "${COMPDB}"
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for index in ${!COMPILE_FLAGS[@]}; do
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echo " \"${COMPILE_FLAGS[$index]}\"," >> "${COMPDB}"
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done
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echo " \"${f}\"" >> "${COMPDB}"
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echo " ]" >> "${COMPDB}"
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echo "}," >> "${COMPDB}"
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done
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# Remove the last comma, for JSON syntax correctness.
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sed -i '$ s/,$//' "${COMPDB}"
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echo "]" >> "${EXAMPLE}/carbon/compile_commands.json"
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# Run the migration tool.
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bazel build -c opt //migrate_cpp
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# Not sure why, but execution of cpp_refactoring fails while saving refactorings
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# if not in the directory. Ideally shouldn't be required, passing the path to
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# migrate_cpp should work.
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pushd "${EXAMPLE}/carbon"
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../../../../bazel-bin/migrate_cpp/migrate_cpp .
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popd
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# Don't save the compile flags.
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rm "${EXAMPLE}/carbon/compile_commands.json"
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