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a43e66ef92
Closes #7572 by adding a cache for compiled regexes of type `Arc<Mutex<LruCache<String, Regex>>>` to `EngineState` . The cache is limited to 100 entries (limit chosen arbitrarily) and evicts least-recently-used items first. This PR makes a noticeable difference when using regexes for `color_config`, e.g.: ```bash #first set string formatting in config.nu like: string: { if $in =~ '^#\w{6}$' { $in } else { 'white' } }` # then try displaying and exploring a table with many strings # this is instant after the PR, but takes hundreds of milliseconds before ['#ff0033', '#0025ee', '#0087aa', 'string', '#4101ff', '#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff', '#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff', '#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff', '#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff','#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff','#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff','#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff','#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff','#ff0033', '#0025ee', '#0087aa', 'string', '#6103ff'] ``` ## New dependency (`lru`) This uses [the popular `lru` crate](https://lib.rs/crates/lru). The new dependency adds 19.8KB to a Linux release build of Nushell. I think this is OK, especially since the crate can be useful elsewhere in Nu.
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.