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feat(resolution): local-variable method calls in Lua, Luau, R, Pascal (#1112) (#1113)

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Extends the local-variable receiver-type inference (#1108/#1110) to the
remaining supported languages with object-method calls. An empirical
sweep found Objective-C, Svelte, Vue, and Astro already resolved
`localVar.method()` (ObjC via message-send handling; the template langs
ride the TypeScript path), leaving Lua, Luau, R, and Pascal.

Lua/Luau/R were a resolution gap, not extraction: the call ref IS
extracted (`lg:log`, `lg$log`), but (1) the resolver's fast pre-filter
`hasAnyPossibleMatch` only understood `.`/`::` separators, so a `:`/`$`
ref was dropped before any strategy ran, and (2) matchMethodCall only
parsed `.`/`::` receivers with no local-var inference for these langs.
Fixes: pre-filter now checks the member/receiver around `:` and `$`;
matchMethodCall recognizes `lg:log` / `lg$log` and routes them through
the same inference + validated resolveMethodOnType path; and inference
patterns are added for Lua/Luau (`local x = T.new()` / `T()` / `x: T`),
R (`x <- T$new()`), and Pascal (`var x: T` / `x := T.Create`).

Pascal statement-form calls (`obj.Method;`) now resolve via the new
inference pattern. The assignment-RHS parameterless form
(`x := obj.Method`) is deliberately left as a field read by the existing
Pascal extractor — an intentional field-vs-call ambiguity tradeoff — so
it stays out of scope.

Validated with single-file and two-file same-name repros per language
(resolves to the right method; two-file is same-file-correct, #1079).
Adds all four to the local-variable inference test matrix. Full suite
green.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Colby Mchenry
2026-07-01 15:59:06 -05:00
committed by GitHub
co-authored by Claude Opus 4.8
parent 3424ff36c5
commit 358f400c40
4 changed files with 56 additions and 2 deletions
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@@ -13,6 +13,7 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
- Method calls made through a local variable now resolve to the method in many more languages. When code does `const logger = new Logger(); logger.log();` (or the equivalent), CodeGraph infers the local variable's type from its declaration or initializer and links the call to the right method — so these calls now show up in callers, impact/blast-radius, and `codegraph_explore` flow traces instead of being dropped. Previously only C++ handled this; it now also covers TypeScript, JavaScript, Python, Java, C#, Kotlin, Swift, Go, Rust, Dart, Scala, and PHP. (#1108)
- Ruby method calls made on a receiver (`logger.log`) now record an edge to the method. Previously the Ruby indexer kept only the receiver and discarded the method name, so a method called through a variable or object had no recorded callers and was missing from impact/blast-radius and flow traces; combined with the local-variable type inference above, `logger = Logger.new; logger.log` now links to `Logger#log`. Calls to a class method (`Foo.bar`) and object construction (`Foo.new`) are still recorded too. (#1110)
- The same local-variable method-call resolution now extends to Lua, Luau, R, and Pascal/Delphi. A method invoked through a local — Lua/Luau `local lg = Logger.new(); lg:log()`, R `lg <- Logger$new(); lg$log()`, or Pascal `var lg: TLogger; ... lg.Log` — now links to the right method instead of being dropped. (#1112)
### Fixes