# `SN006` Use tree-sitter for code scanning

Code scanning shall use tree-sitter to parse source files into an AST, extracting
comment nodes and correlating them with the symbol they document.

This avoids custom parsing logic and correctly handles language-specific constructs
such as Python docstrings, Rust doc comments (`///`), and C preprocessor directives.

Each supported language requires its corresponding tree-sitter grammar package
(`tree-sitter-python`, `tree-sitter-go`, `tree-sitter-rust`).


:::{dropdown} References
:icon: link
:color: secondary

__Relates to:__
[`SF016` Scan code for requirement references](/requirements/SF016)

:::

:::{dropdown} Source
:icon: file-code
:color: info

__Source file__: [`specs/nonfunctional.yaml`](https://github.com/agagniere/speky/blob/master/specs/nonfunctional.yaml)

__Loaded from__: [`speky`](https://github.com/agagniere/speky/blob/master/specs/speky.yaml)

:::