Method setupLanguageService

internal/api/session.go:522–529

setupLanguageService creates a LanguageService for the given snapshot/project. Unlike setupChecker, this does NOT acquire a checker from the pool, so callers that only need an LS (and not a Checker) can avoid blocking on / holding a pooled checker. The LS acquires its own checker internally (keyed

(sd *snapshotData, program *compiler.Program, projectHandle ProjectID, activeFile string)

// LS operation acquires a checker exactly once; nested acquisitions (e.g. find-all-
// references) would deadlock on the single-slot persistent checker.
func (s *Session) setupLanguageService(sd *snapshotData, program *compiler.Program, projectHandle ProjectID, activeFile string) (*ls.LanguageService, error) {
	projectName := parseProjectHandle(projectHandle)
	proj := sd.snapshot.ProjectCollection.GetProjectByPath(projectName)
	if proj == nil {
		return nil, fmt.Errorf("%w: project %s not found", ErrClientError, projectName)
	}
	return ls.NewLanguageService(proj.ConfigFilePath(), program, sd.snapshot, activeFile), nil
}

// HandleRequest implements Handler.
func (s *Session) HandleRequest(ctx context.Context, method string, params json.Value) (any, error) {