rlox-interpreter is an AST-walking implementation of Bob Nystrom's Lox language in Rust.
Disclaimer: This is my first Rust project, do not expect idiomatic or performant code. 😉
Execute the following commands to build rlox-interpreter:
cargo build --release
Start a repl:
target/release/rlox-interpreter
Execute a Lox script:
target/release/rlox-interpreter resources/benchmark/fib.lox
rlox-interpreter is implemented as an AST-walking interpreter. Here are some execution times from running each of the benchmarks on an AMD Ryzen 7 Pro 5850U. For comparison there are also the execution times for Bob Nystrom's AST-walking interpreter (which is programmed in Java).
| rlox-interpreter | jlox | rlox-interpreter/jlox | |
|---|---|---|---|
| binary_trees.lox | 6.129 s | 4.624 s | 1.33 |
| equality.lox | 7.045 s | 2.849 s | 2.47 |
| fib.lox | 5.675 s | 2.884 s | 1.97 |
| instantiation.lox | 2.219 s | 1.126 s | 1.97 |
| invocation.lox | 2.052 s | 1.034 s | 1.98 |
| method_call.lox | 1.016 s | 1.258 s | 0.81 |
| properties.lox | 2.799 s | 3.201 s | 0.87 |
| string_equality.lox | 2.185 s | 2.273 s | 0.96 |
| trees.lox | 14.073 s | 22.050 s | 0.64 |
| zoo.lox | 1.962 s | 3.208 s | 0.61 |
You can find the benchmark scripts here.