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Cascading Tree Sitter Queries | Hacker News
iovrthoughtt · 2026-06-17 · via HN's home page

Apologies, the names is a little tongue in cheek.

The goals of this is: 1. create an abstract syntax tree over the tree sitter trees for queries that work across language (function) @f matches functions in any supported language 2. create a smaller (in text) query language based on the semantics of css selectors e.g. in the 'c' language id#Validate -> [((function_definition declarator: (function_declarator declarator: (identifier) @_n0)) @_root2 (#eq? @_n0 "Validate")) ((call_expression function: (identifier) @_n1) @_root3 (#eq? @_n1 "Validate"))] 3. provide some useful commands on top of this to allow humans (and llms) to be able to quickly learn about codebases from the cli

i made this for myself, just sharing it because i probably should

yes i used claude code for most of this