Format Code

Doris use Clang-format to automatically check the format of your source code.

Code Style

Doris Code Style is based on Google’s, makes a few changes. The customized .clang-format file is in the root dir of Doris. Now, .clang-format file only works on clang-format-8.0.1+.

Preparing

You should install clang-format, or you can use clang-format plugins which support by IDEs or Editors.

Install clang-format

Ubuntu: apt-get install clang-format

Mac: brew install clang-format

The current release is 10.0, you can specify old version, e.g.

apt-get install clang-format-9

Centos 7:

The version of clang-format installed by yum is too old. Compiling clang from source is recommended.

Clang-format plugins

Clion IDE supports the plugin “ClangFormat”, you can search in File->Setting->Plugins and download it. But the version is not match with clang-format. Judging from the options supported, the version is lower than clang-format-9.0.

Usage

CMD

Change directory to the root directory of Doris sources and run the following command: build-support/clang-format.sh

NOTE: Python3 is required to run the clang-format.sh script.

Using clang-format in IDEs or Editors

Clion

If using the plugin ‘ClangFormat’ in Clion, choose Reformat Code or press the keyboard shortcut.

VS Code

VS Code needs install the extension ‘Clang-Format’, and specify the executable path of clang-format in settings.

Open the vs code configuration page and search clang_format, fill the box as follows.

  1. "clang_format_path":  "$clang-format path$",
  2. "clang_format_style": "file"

Then, right click the file and choose Format Document.