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fix(mcp): resolve module-qualified symbol lookups (#173) (#179)

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`codegraph_callees stage_apply::run` (and `_node`, `_impact`, ...)
returned "not found" against a repo with 7-9 sibling Rust modules,
each exporting `pub async fn run`. Two underlying issues:

1. The FTS5 query builder stripped `:` as a special char without
   splitting on `::`, so `stage_apply::run` collapsed to the literal
   `stage_applyrun` which matches nothing. Treat `::` as whitespace
   before the strip step so both halves become FTS tokens.

2. `matchesSymbol` only understood `Parent.child` qualifiers and
   relied on `qualifiedName` carrying the module path. Rust file-
   level functions don't have their module name in `qualifiedName`
   (it's encoded in the file path instead), so even dot-style
   lookups failed. Accept `::`, `.`, `/` as separators; multi-level
   forms compose; Rust `crate::`/`super::`/`self::` prefixes get
   stripped before path matching. Fall back to file-path containment
   when the qualified-name suffix doesn't match — `stage_apply::run`
   matches a `run` in any file whose path has a `stage_apply` segment.

Also tightens the no-match branch: qualified lookups no longer fall
through to a fuzzy text match. `stage_apply::nonexistent_fn` returns
`null` instead of silently resolving to an unrelated `rollback` in
the same file.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Colby Mchenry
2026-05-19 11:02:26 -05:00
committed by GitHub
co-authored by Claude Opus 4.7
parent e176062c56
commit 83f36dc170
4 changed files with 311 additions and 17 deletions
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src/db/queries.ts
+7 -1
View File
@@ -696,8 +696,14 @@ export class QueryBuilder {
const { kinds, languages, limit = 100, offset = 0 } = options;
// Add prefix wildcard for better matching (e.g., "auth" matches "AuthService", "authenticate")
// Escape special FTS5 characters and add prefix wildcard
// Escape special FTS5 characters and add prefix wildcard.
//
// `::` is a qualifier separator in Rust/C++/Ruby, not a token char,
// so treat it as whitespace before the strip step. Otherwise queries
// like `stage_apply::run` collapse to `stage_applyrun` (the colons
// are stripped without splitting) and find nothing. See #173.
const ftsQuery = query
.replace(/::/g, ' ') // Rust/C++/Ruby qualifier separator
.replace(/['"*():^]/g, '') // Remove FTS5 special chars
.split(/\s+/)
.filter(term => term.length > 0)