34 lines
1.4 KiB
Markdown
34 lines
1.4 KiB
Markdown
# Using clang-format on C++ Code
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[`clang-format`](http://clang.llvm.org/docs/ClangFormat.html) is a tool to
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automatically format C/C++/Objective-C code, so that developers don't need to
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worry about style issues during code reviews.
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It is highly recommended to format your changed C++ code before opening pull
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requests, which will save you and the reviewers' time.
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You can install `clang-format` and `git-clang-format` via
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`npm install -g clang-format`.
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To automatically format a file according to Electron C++ code style, simply run
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`clang-format -i path/to/electron/file.cc`. It should work on macOS/Linux/Windows.
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The workflow to format your changed code:
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1. Make codes changes in Electron repository.
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2. Run `git add your_changed_file.cc`.
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3. Run `git-clang-format`, and you will probably see modifications in
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`your_changed_file.cc`, these modifications are generated from `clang-format`.
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4. Run `git add your_changed_file.cc`, and commit your change.
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5. Now the branch is ready to be opened as a pull request.
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If you want to format the changed code on your latest git commit (HEAD), you can
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run `git-clang-format HEAD~1`. See `git-clang-format -h` for more details.
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## Editor Integration
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You can also integrate `clang-format` directly into your favorite editors.
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For further guidance on setting up editor integration, see these pages:
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* [Atom](https://atom.io/packages/clang-format)
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* [Vim & Emacs](http://clang.llvm.org/docs/ClangFormat.html#vim-integration)
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