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rlox

A full implementation of the lox programming language written in Rust. The 3rd part of the book implements a bytecode VM in C, which the design of my Rust implementation follows rather closely. However, I tried using idiomatic Rust code wherever possible (e.g. using Result<> for error handling, implementing the Scanner/TokenStream as an iterator, using Rust's enums instead of tagged unions, ...)

Building

Nothing special here, simply use cargo build --release to build the interpreter/REPL binary.

Testing

Rlox currently passes all function tests of the official test suite. While the general architecture follows clox, the error reporting and syncrhonization actually resembles jlox (the java-implementation from the book's first part). Thus the official test suite needs to be run in "jlox" mode. There's a single test that fails because in this case rlox actually behaves like clox, namely unexpected_character.rlox.

There are also some unit tests and benchmark, they can be run via the usual cargo test and cargo bench commands.

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