Cpp2Rust Automatically Translates C++ Code to Safe Rust

Introduction to Cpp2Rust

Cpp2Rust is a new tool designed to automate the translation of C++ code into safe Rust code. This is important as it allows developers to leverage Rust's safety features without rewriting C++ code manually. The tool’s approach enhances code safety by utilizing Rust's ownership model.

Technical Framework and Operation

Cpp2Rust uses a syntax-driven translation process based on the Abstract Syntax Tree (AST) generated by Clang. It begins by parsing C++ files and traverses the AST to emit Rust code, where necessary, including calls to the libcc2rs runtime library to manage raw pointer semantics.

Generated Code and Models

The translator's default output is safe Rust employing a reference counting model, but developers can switch to an unsafe model for performance comparisons and debugging purposes using the command line. This flexibility is crucial for developers who need to balance safety with performance in different scenarios.

Installation and Usage

Cpp2Rust can be easily installed on Ubuntu using a few command-line instructions to install required dependencies and build the project. For example, after setting up, users can run simple commands like: ./build/cpp2rust/cpp2rust --file=<file>.cpp -o=<file>.rs to convert C++ code into Rust.

Testing and Validation

Cpp2Rust includes functionality for testing the output, allowing users to run all tests, unit tests, and checks for specific components of the libcc2rs library. This ensures that the translated code adheres to intended behaviors and safety requirements.