asmble/examples/rust-regex

Example: Rust Regex

This shows an example of using the Rust regex library on the JVM. This builds on rust-simple and rust-string. There is also a simple benchmark checking the performance compared to the built-in Java regex engine.

Main

In this version, we include the regex crate. The main loads a ~15k text file Project Gutenberg collection of Mark Twain works (taken from this blog post that does Rust regex performance benchmarks). Both the Java and Rust regex engines are abstracted into a common interface. When run, it checks how many times the word "Twain" appears via both regex engines.

To run it yourself, run the following from the root asmble dir:

gradlew --no-daemon :examples:rust-regex:run

In release mode, the generated class is 903KB w/ ~575 methods. The output:

'Twain' count in Java: 811
'Twain' count in Rust: 811

Benchmarks

TODO: JMH benchmarks