feat(extraction): R language support (#828) (#839)

R has no declaration syntax — everything is an expression — so the
extractor works through the visitNode hook: functions in every
assignment form (incl. nested, attributed to their enclosing scope),
top-level variables/constants, library()/require() imports and
source() file references (claimed, Lua-style), S4/RefClass/R6/ggproto
classes with their methods and extends edges, setGeneric/setMethod.
Grammar vendored from r-lib/tree-sitter-r v1.2.0 (ABI 14; npm package
is a security placeholder, tree-sitter-wasms has no R).

Benchmarked on AnomalyDetection (8/8 named defs), dplyr (1027 fns),
ggplot2 (150 ggproto classes / 597 methods / 128 extends edges —
adding ggproto mid-bench flipped the large-repo A/B from a regression
to 2.4x faster than the no-codegraph arm).

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

This commit is contained in:

Colby Mchenry

2026-06-12 13:17:29 -05:00

committed by

GitHub

co-authored by

Claude Opus 4.8

parent 2c7bbd5387

commit 06a410e9b4

9 changed files with 852 additions and 54 deletions

									
										src/types.ts
									
		+1
		
												View File
												
				@@ -90,6 +90,7 @@ export const LANGUAGES = [

				  'lua',

				  'luau',

				  'objc',

				  'r',

				  'yaml',

				  'twig',

				  'xml',