Enable read-only access to initializing formals (issue 27895)

pkg/analyzer/lib/src/generated/engine.dart

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index 0301ed00c7f30d053673b68fa2e8167c0acf582f..fa314ee432dcf6b814966911e869d87ed93e20ee 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1129,6 +1129,7 @@ abstract class AnalysisOptions {
    * Return `true` if access to field formal parameters should be allowed in a
    * constructor's initializer list.
    */
+  @deprecated
   bool get enableInitializingFormalAccess;
 
   /**
@@ -1330,9 +1331,6 @@ class AnalysisOptionsImpl implements AnalysisOptions {
   bool enableAssertMessage = false;
 
   @override
-  bool enableInitializingFormalAccess = false;
-
-  @override
   bool enableLazyAssignmentOperators = false;
 
   @override
@@ -1453,7 +1451,6 @@ class AnalysisOptionsImpl implements AnalysisOptions {
     enableAssertInitializer = options.enableAssertInitializer;
     enableAssertMessage = options.enableAssertMessage;
     enableStrictCallChecks = options.enableStrictCallChecks;
-    enableInitializingFormalAccess = options.enableInitializingFormalAccess;
     enableLazyAssignmentOperators = options.enableLazyAssignmentOperators;
     enableSuperMixins = options.enableSuperMixins;
     enableTiming = options.enableTiming;
@@ -1533,6 +1530,13 @@ class AnalysisOptionsImpl implements AnalysisOptions {
   @deprecated
   void set enableGenericMethods(bool enable) {}
 
+  @deprecated
+  @override
+  bool get enableInitializingFormalAccess => true;
+
+  @deprecated
+  void set enableInitializingFormalAccess(bool enable) {}
+
   @override
   List<ErrorProcessor> get errorProcessors =>
       _errorProcessors ??= const <ErrorProcessor>[];