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Show HN: perl-lsp – annotation free static analysis for Perl
Built in Rust on top of ts-parser-perl and tower-lsp. Witness bags with graph traversal (value edges, call flow edges).
How it works:
- builds witnesses and scopes by walking the parse tree. Fully known values get concrete types, otherwise they get an edge pointing to the last witness we have for this symbol
- a worklist runs to a fixed point: reducers fold each symbol's witnesses and chase edges. At this point, the witness bag is complete and ready to use
- all downstream features are queries into the bag, following along the graph edges that are relevant
Extensible - you can bring your own Rhai plugin to shortcut common patterns (exporters and OOP frameworks), or even add new types of definitions (worker tasks and web routes).
The build/query timing distinction with edges lets you late bind types, which is duly similar to how Perl itself works: `Foo->new` isn't known if it's the constructor for Foo or calling a method on the sub name `Foo`; late binding lets you make that call after the worklist folds.
- atmanactive 3mo agoThis looks awesome. Thank you!
- rabbiveesh 3mo agoThanks! I'm very actively developing it right now so if there are feature requests please open issues on github
- sanket-thakkar 3mo agoThat's amazing to know. it's good to have such tools with some customization choice options. good initiative.