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Slint is a declarative GUI toolkit written in Rust (with bindings for C++, JavaScript, and Python) for building modern, native user interfaces across desktop, embedded, and mobile platforms. It uses a domain-specific UI markup that compiles to efficient native code.
An incremental parsing system for programming tools
...Fast enough to parse on every keystroke in a text editor. Robust enough to provide useful results even in the presence of syntax errors. Dependency-free so that the runtime library (which is written in pure C) can be embedded in any application. All of Tree-sitter’s parsing functionality is exposed through C APIs. Applications written in higher-level languages can use Tree-sitter via binding libraries like node-tree-sitter or the tree-sitter rust crate, which have their own documentation. To build the library on a POSIX system, just run make in the Tree-sitter directory. ...
CXX is a library that offers safe interop between Rust and C++. It provides a safe mechanism for calling C++ code from Rust and vice versa, one that is protected from the many possible things that can go wrong when bindgen or cbindgen is used to generate unsafe C-style bindings.
The general idea of CXX is to define the signatures of both sides of the FFI boundary embedded together in one Rust module.