7.4 Code modification and Clang-Format

Clang-Format is an essential tool in the Clang/LLVM project, designed for formatting C, C++, Java, JavaScript, Objective-C, or Protobuf code. It plays a crucial role in the Clang tooling ecosystem, offering capabilities for parsing, analyzing, and manipulating source code.

Clang-Format is a part of Clang and has to be installed if we have built and installed the Clang compiler. Let’s look at how it can be used.

7.4.1 Clang-Format configuration and usage examples

Clang-Format uses .clang-format configuration files. The utility will use the closest configuration file; i.e., if the file is located at the folder with the source files we want to format, then the configuration from the folder will be used. The format for configuration files is YAML, which is the same format used for Clang-Tidy configuration files, as shown in Figure 5.12, Clang-Tidy configuration. Let’s create the following simple configuration file:

1 BasedOnStyle...