Load imports for Dart files too (#2433)

drift/test/generated/todos.g.dart

@@ -1846,9 +1846,9 @@ class AllTodosWithCategoryResult extends CustomResultSet {
 
 mixin _$SomeDaoMixin on DatabaseAccessor<TodoDb> {
   $UsersTable get users => attachedDatabase.users;
-  $SharedTodosTable get sharedTodos => attachedDatabase.sharedTodos;
   $CategoriesTable get categories => attachedDatabase.categories;
   $TodosTableTable get todosTable => attachedDatabase.todosTable;
+  $SharedTodosTable get sharedTodos => attachedDatabase.sharedTodos;
   $TodoWithCategoryViewView get todoWithCategoryView =>
       attachedDatabase.todoWithCategoryView;
   Selectable<TodoEntry> todosForUser({required int user}) {

drift_dev/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 2.8.3-dev
+
+- Allow Dart-defined tables to reference imported tables through SQL
+  [#2433](https://github.com/simolus3/drift/issues/2433).
+
 ## 2.8.2
 
 - Fix generated to write qualified column references for Dart components in

drift_dev/lib/src/analysis/driver/cache.dart

@@ -63,8 +63,12 @@ class DriftAnalysisCache {
       yield found;
 
       for (final imported in found.imports ?? const <Uri>[]) {
-        if (seenUris.add(imported)) {
-          pending.add(knownFiles[imported]!);
+        // We might not have a known file for all imports of a Dart file, since
+        // not all imports are drift-related there.
+        final knownImport = knownFiles[imported];
+
+        if (seenUris.add(imported) && knownImport != null) {
+          pending.add(knownImport);
         }
       }
     }

drift_dev/lib/src/analysis/driver/driver.dart

@@ -184,6 +184,10 @@ class DriftAnalysisDriver {
             );
           }
         }
+      } else if (state is DiscoveredDartLibrary) {
+        for (final import in state.importDependencies) {
+          await prepareFileForAnalysis(import);
+        }
       }
     }
 

drift_dev/lib/src/analysis/driver/state.dart

@@ -129,10 +129,17 @@ class DriftFileImport {
 class DiscoveredDartLibrary extends DiscoveredFileState {
   final LibraryElement library;
 
+  @override
+  final List<Uri> importDependencies;
+
   @override
   bool get isValidImport => true;
 
-  DiscoveredDartLibrary(this.library, super.locallyDefinedElements);
+  DiscoveredDartLibrary(
+    this.library,
+    super.locallyDefinedElements,
+    this.importDependencies,
+  );
 }
 
 class NotADartLibrary extends DiscoveredFileState {

drift_dev/lib/src/analysis/resolver/dart/table.dart

@@ -46,6 +46,9 @@ class DartTableResolver extends LocalElementResolver<DiscoveredDartTable> {
       }
     }
 
+    final tableConstraints =
+        await _readCustomConstraints(references, columns, element);
+
     final table = DriftTable(
       discovered.ownId,
       DriftDeclaration.dartElement(element),
@@ -60,7 +63,7 @@ class DartTableResolver extends LocalElementResolver<DiscoveredDartTable> {
         for (final uniqueKey in uniqueKeys ?? const <Set<DriftColumn>>[])
           UniqueColumns(uniqueKey),
       ],
-      overrideTableConstraints: await _readCustomConstraints(columns, element),
+      overrideTableConstraints: tableConstraints,
       withoutRowId: await _overrideWithoutRowId(element) ?? false,
     );
 
@@ -272,7 +275,7 @@ class DartTableResolver extends LocalElementResolver<DiscoveredDartTable> {
     return ColumnParser(this).parse(declaration, element);
   }
 
-  Future<List<String>> _readCustomConstraints(
+  Future<List<String>> _readCustomConstraints(Set<DriftElement> references,
       List<DriftColumn> localColumns, ClassElement element) async {
     final customConstraints =
         element.lookUpGetter('customConstraints', element.library);
@@ -343,6 +346,7 @@ class DartTableResolver extends LocalElementResolver<DiscoveredDartTable> {
             (msg) => DriftAnalysisError.inDartAst(element, source, msg));
 
         if (table != null) {
+          references.add(table);
           final missingColumns = clause.columnNames
               .map((e) => e.columnName)
               .where((e) => !table.columnBySqlName.containsKey(e));

drift_dev/lib/src/analysis/resolver/discover.dart

@@ -77,8 +77,11 @@ class DiscoverStep {
         await finder.find();
 
         _file.errorsDuringDiscovery.addAll(finder.errors);
-        _file.discovery =
-            DiscoveredDartLibrary(library, _checkForDuplicates(finder.found));
+        _file.discovery = DiscoveredDartLibrary(
+          library,
+          _checkForDuplicates(finder.found),
+          finder.imports,
+        );
         break;
       case '.drift':
       case '.moor':
@@ -153,6 +156,8 @@ class _FindDartElements extends RecursiveElementVisitor<void> {
   final DiscoverStep _discoverStep;
   final LibraryElement _library;
 
+  final List<Uri> imports = [];
+
   final TypeChecker _isTable, _isView, _isTableInfo, _isDatabase, _isDao;
 
   final List<Future<void>> _pendingWork = [];
@@ -231,6 +236,18 @@ class _FindDartElements extends RecursiveElementVisitor<void> {
     super.visitClassElement(element);
   }
 
+  @override
+  void visitLibraryImportElement(LibraryImportElement element) {
+    final imported = element.importedLibrary;
+
+    if (imported != null && !imported.isInSdk) {
+      _pendingWork.add(Future(() async {
+        final uri = await _discoverStep._driver.backend.uriOfDart(imported);
+        imports.add(uri);
+      }));
+    }
+  }
+
   String _defaultNameForTableOrView(ClassElement definingElement) {
     return _discoverStep._driver.options.caseFromDartToSql
         .apply(definingElement.name);

drift_dev/test/analysis/resolver/dart/table_test.dart

@@ -364,6 +364,48 @@ class WithConstraints extends Table {
     ]);
   });
 
+  test('can resolve references from import', () async {
+    final backend = TestBackend.inTest({
+      'a|lib/topic.dart': '''
+import 'package:drift/drift.dart';
+
+import 'language.dart';
+
+class Topics extends Table {
+  IntColumn get id => integer()();
+  TextColumn get langCode => text()();
+}
+
+''',
+      'a|lib/video.dart': '''
+import 'package:drift/drift.dart';
+
+import 'topic.dart';
+
+class Videos extends Table {
+  IntColumn get id => integer()();
+
+  IntColumn get topicId => integer()();
+  TextColumn get topicLang => text()();
+
+  @override
+  List<String> get customConstraints => [
+        'FOREIGN KEY (topic_id, topic_lang) REFERENCES topics (id, lang_code)',
+      ];
+}
+''',
+    });
+
+    final state = await backend.analyze('package:a/video.dart');
+    backend.expectNoErrors();
+
+    final table = state.analyzedElements.single as DriftTable;
+    expect(
+        table.references,
+        contains(isA<DriftTable>()
+            .having((e) => e.schemaName, 'schemaName', 'topics')));
+  });
+
   test('supports autoIncrement on int64 columns', () async {
     final backend = TestBackend.inTest({
       'a|lib/a.dart': '''