Cppfront is a compiler that translates an experimental C++ syntax variant called Cpp2 into standard C++20 code.
The project addresses the challenge of prototyping and experimenting with potential C++ language features by providing a simpler, safer syntax for writing ordinary C++ while maintaining full compatibility with the existing C++ ecosystem. Rather than creating a separate language, Cpp2 functions as an alternative syntax layer that compiles down to standard C++, allowing developers to write code that integrates seamlessly with existing C++20 compilers, libraries, and tools without requiring any modifications to those tools. The compiler generates valid C++ source code that can be used directly with any standards-compliant compiler.
Cppfront is intended for developers and language designers interested in exploring potential improvements to C++ syntax and safety features before they might be considered for standardization. It suits projects where experimentation with new language concepts is valuable and where developers are comfortable working with an evolving, research-oriented tool. The project explicitly positions itself not as a C++ successor or alternate ecosystem but as a vehicle for prototyping ideas that could eventually influence the evolution of standard C++ itself. It maintains full interoperability with Standard C++ modules, concept requirements, and other modern C++ features, making it suitable for integration into existing C++ codebases.
The project maintains active continuous integration across multiple compilers and platforms. Development appears focused on refining the compiler implementation and expanding language feature coverage based on feedback from the design community. The tool remains under active experimentation and iteration, with status updates provided to track progress on the compiler's capabilities and design decisions.
