Fine. Add tracking for LibraryElementImpl.entryPoint

Change-Id: I5ef4ede6d936db14d5ada758bc94bd3109b70167
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/449501
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Johnni Winther <[email protected]>

Author: scheglov

pkg/analyzer/lib/src/dart/element/element.dart

@@ -6054,8 +6054,10 @@ class LibraryElementImpl extends ElementImpl
   Null get enclosingElement2 => enclosingElement;
 
   @override
+  @trackedDirectly
   TopLevelFunctionElementImpl? get entryPoint {
     _ensureReadResolution();
+    globalResultRequirements?.record_library_entryPoint(element: this);
     return _entryPoint;
   }
 

pkg/analyzer/lib/src/fine/requirements.dart

@@ -1807,6 +1807,22 @@ class RequirementsManifest {
     );
   }
 
+  void record_library_entryPoint({required LibraryElementImpl element}) {
+    if (_recordingLockLevel != 0) {
+      return;
+    }
+
+    var manifest = element.manifest;
+    if (manifest == null) {
+      return;
+    }
+
+    var requirements = _getLibraryRequirements(element);
+    var mainName = TopLevelFunctionElement.MAIN_FUNCTION_NAME.asLookupName;
+    var id = manifest.getExportedId(mainName);
+    requirements.exportedTopLevels[mainName] = id;
+  }
+
   void record_library_featureSet({required LibraryElementImpl element}) {
     if (_recordingLockLevel != 0) {
       return;

pkg/analyzer/test/src/dart/analysis/driver_test.dart

@@ -29477,6 +29477,82 @@ typedef C = int;
     );
   }
 
+  test_dependency_libraryElement_entryPoint() async {
+    configuration
+      ..withGetErrorsEvents = false
+      ..withStreamResolvedUnitResults = false;
+
+    _ManualRequirements.install((state) {
+      var library = state.singleUnit.importedLibraries.first;
+      library.entryPoint;
+    });
+
+    await _runChangeScenarioTA(
+      initialA: r'''
+void main() {}
+''',
+      testCode: r'''
+import 'a.dart';
+''',
+      operation: _FineOperationTestFileGetErrors(),
+      expectedInitialEvents: r'''
+[status] working
+[operation] linkLibraryCycle SDK
+[operation] linkLibraryCycle
+  package:test/a.dart
+    declaredFunctions
+      main: #M0
+  requirements
+[operation] linkLibraryCycle
+  package:test/test.dart
+  requirements
+[operation] analyzeFile
+  file: /home/test/lib/test.dart
+  library: /home/test/lib/test.dart
+[operation] analyzedLibrary
+  file: /home/test/lib/test.dart
+  requirements
+    libraries
+      package:test/a.dart
+        exportedTopLevels
+          main: #M0
+[status] idle
+''',
+      updatedA: r'''
+@deprecated
+void main() {}
+''',
+      expectedUpdatedEvents: r'''
+[status] working
+[operation] linkLibraryCycle
+  package:test/a.dart
+    declaredFunctions
+      main: #M1
+  requirements
+[operation] reuseLinkedBundle
+  package:test/test.dart
+[operation] checkLibraryDiagnosticsRequirements
+  library: /home/test/lib/test.dart
+  topLevelIdMismatch
+    libraryUri: package:test/a.dart
+    name: main
+    expectedId: #M0
+    actualId: #M1
+[operation] analyzeFile
+  file: /home/test/lib/test.dart
+  library: /home/test/lib/test.dart
+[operation] analyzedLibrary
+  file: /home/test/lib/test.dart
+  requirements
+    libraries
+      package:test/a.dart
+        exportedTopLevels
+          main: #M1
+[status] idle
+''',
+    );
+  }
+
   test_dependency_libraryElement_featureSet() async {
     configuration
       ..withGetErrorsEvents = false