getTypeHierarchy() walked a type's ancestors and then its descendants
with one visited set. The ancestor walk marks the focal node first, so
the descendant walk returned at its visited guard before reading a
single incoming edge: no type ever had subtypes or implementors, in any
language. Each direction now keeps its own visited set.
The same walk feeds the hierarchy step of findRelevantContext, which
codegraph_explore and codegraph context build on. That step promised
subclasses within a budget of a quarter of maxNodes, but checked the
budget only between entry points, which was harmless while the walk
returned ancestors alone. With descendants coming back, one widely
implemented interface brought its whole tree: vscode's IDisposable, in
src/vs/base and src/vs/editor, has 613 types in its hierarchy, and
codegraph context IDisposable then traded the interface's own dispose
for an arbitrary implementor. Added on top of the contributor's fix:
the budget now holds per node, and only edges between kept nodes are
added.
Validation: graph.test.ts gains a test that getTypeHierarchy() returns
a base class's subclass and an interface's implementor; it fails on
main. context.test.ts gains one that the hierarchy step adds an
interface's implementors within its budget (12 nodes, no traversal:
1 to 3); main gives 0, and the traversal fix without the cap gives 10.
On vscode's base and editor subtree, codegraph context and
codegraph_explore keep main's size and speed (0.8 to 1.3 s), and the
hierarchy they show is now the queried type's own: StandaloneCodeEditor
and EmbeddedCodeEditorWidget for "ICodeEditor CodeEditorWidget". On
prometheus, 3 of 4 explore answers are identical, and the fourth names
more of storage.Appender's implementors. The contributor's codegraph
implementations command and its test-code helper are not part of this
change. This is the getTypeHierarchy() half of issue #2833.
Original PR #2839 by @danusha2345.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Add evaluation test suite with TypeScript and Python fixtures
- Fix MCP server to defer CodeGraph init until rootUri received
- Fix call edge extraction by calling resolveReferences() after indexAll/sync
- Fix glob matching for root-level files (e.g., **/*.py now matches auth.py)
- Fix duplicate node extraction for methods inside classes
- Update context tests to use buildContext for semantic search + graph traversal
- Export unused formatter functions to fix build
Evaluation results:
- TypeScript: 96% precision, 79% recall, 85% F1
- Python: 99% precision, 80% recall, 85% F1
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
