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Dart: getter reads and enum-extension methods get no callers (1.6.2) #2338
Description
Hi, and thanks for CodeGraph. It's been the most accurate code graph I've tried on a mixed Dart/TypeScript codebase.
While working on a project of mine I asked for the callers of a small getter I'd added on an enum, and CodeGraph said nothing calls it. In fact it's used in several places. I cut it down to a minimal example and found two separate gaps.
Version: CodeGraph 1.6.2 (standalone install, linux-x64), fresh codegraph index .
lib/shape.dart
enum Shape { circle, square }
extension ShapeInfo on Shape {
String get label => name.toUpperCase();
String shout() => name.toUpperCase();
}
class Box {
const Box(this.size);
final int size;
int get area => size * size;
int grow() => size + 1;
}
extension BoxActions on Box {
int twice() => size * 2;
}lib/use.dart
import 'shape.dart';
String a(Shape s) => s.label; // getter, extension on enum
String b(Shape s) => s.shout(); // method, extension on enum
int c(Box x) => x.area; // getter, plain class
int d(Box x) => x.grow(); // method, plain class
int e(Box x) => x.twice(); // method, extension on classcodegraph callers … |
expected | got |
|---|---|---|
grow |
d |
✅ d |
twice |
e |
✅ e |
area |
c |
❌ 0 callers |
label |
a |
❌ 0 callers |
shout |
b |
❌ 0 callers |
1. Getter reads are never recorded as calls, even on a plain class (x.area). The getter itself is indexed (Box::area), but nothing links to it, so callers and impact miss every place that reads it.
2. Extension members on an enum aren't resolved, while the same thing on a class works (twice).
It's the same inside block-bodied functions and inside class methods, not only => functions.
Happy to test a fix if that helps.
Activity
Phase 4: resolution and extraction accuracy
fix(dart): link getter reads, enum-extension members and more type po…
colbymchenry commentedon Oct 5, 2026
Thanks @brookly255-lv for the kind words, and for cutting this down to one small example that covered both gaps.
Both are fixed on
mainin #2360:x.areaproduced nothing. A read likex.areaors.labelnow counts as calling the getter. The getter is found through the receiver's declared type: on the class, inherited from a supertype or mixin, or added by an extension. A plain field read, a getter of a type from outside your project, or a receiver whose type isn't written down still links nothing, socallersdoesn't fill up with guesses.twiceonBoxonly worked because it was the onetwicein the project, and an enum receiver stopped lookup outright. When the type itself has no member of that name, lookup now goes on to members an extension adds, sos.shout()reachesShapeInfo.shout.On your example,
callers area,callers labelandcallers shoutnow returnc,aandb, andgrowandtwiceare unchanged. On bloc, riverpod and flutter/samples, this added several hundred getter-read links per project and removed none.This ships in the next release. Re-index after upgrading (
codegraph index) to pick it up. You're credited in the changelog, and if you get a chance to try it on your mixed Dart/TypeScript project, feedback is very welcome.