Patterns parsing: recover from patternVariableDeclaration non-statement.

Previously, if a pattern variable declaration appeared outside of a
function or method, the parser would get very confused.  Now it
recognizes the situation, issues a comprehensible error message, and
replaces the pattern with a synthetic identifier token so that the
analyzer AST is somewhat sensible.

Fixes #51322.

Bug: https://github.com/dart-lang/sdk/issues/51322
Change-Id: Ica5f060cb483a39c4e50942d639939b1fab40bea
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293087
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>

pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart

@@ -10982,6 +10982,19 @@ const MessageCode messagePatternMatchingError = const MessageCode(
     "PatternMatchingError",
     problemMessage: r"""Pattern matching error""");
 
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codePatternVariableDeclarationOutsideFunctionOrMethod =
+    messagePatternVariableDeclarationOutsideFunctionOrMethod;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messagePatternVariableDeclarationOutsideFunctionOrMethod =
+    const MessageCode("PatternVariableDeclarationOutsideFunctionOrMethod",
+        index: 152,
+        problemMessage:
+            r"""A pattern variable declaration may not appear outside a function or method.""",
+        correctionMessage:
+            r"""Try declaring ordinary variables and assigning from within a function or method.""");
+
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codePlatformPrivateLibraryAccess =
     messagePlatformPrivateLibraryAccess;

pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart

@@ -3348,6 +3348,32 @@ class Parser {
     }
 
     Token beforeType = token;
+    if (varFinalOrConst != null) {
+      Token? afterOuterPattern = skipOuterPattern(beforeType);
+      if (afterOuterPattern != null &&
+          (optional('=', afterOuterPattern.next!))) {
+        reportRecoverableErrorWithEnd(beforeType.next!, afterOuterPattern,
+            codes.messagePatternVariableDeclarationOutsideFunctionOrMethod);
+        Token syntheticName = rewriter.insertSyntheticIdentifier(beforeType);
+
+        rewriter.dropRange(syntheticName, afterOuterPattern.next!);
+        return parseFields(
+            beforeStart,
+            /* abstractToken = */ null,
+            augmentToken,
+            externalToken,
+            /* staticToken = */ null,
+            /* covariantToken = */ null,
+            lateToken,
+            varFinalOrConst,
+            beforeType,
+            noType,
+            syntheticName,
+            DeclarationKind.TopLevel,
+            /* enclosingDeclarationName = */ null,
+            /* nameIsRecovered = */ true);
+      }
+    }
     TypeInfo typeInfo =
         computeType(token, /* required = */ false, /* inDeclaration = */ true);
     token = typeInfo.skipType(token);
@@ -4374,6 +4400,34 @@ class Parser {
     listener.beginMember();
 
     Token beforeType = token;
+    if (varFinalOrConst != null) {
+      Token? afterOuterPattern = skipOuterPattern(beforeType);
+      if (afterOuterPattern != null &&
+          (optional('=', afterOuterPattern.next!))) {
+        reportRecoverableErrorWithEnd(beforeType.next!, afterOuterPattern,
+            codes.messagePatternVariableDeclarationOutsideFunctionOrMethod);
+        Token syntheticName = rewriter.insertSyntheticIdentifier(beforeType);
+
+        rewriter.dropRange(syntheticName, afterOuterPattern.next!);
+        token = parseFields(
+            beforeStart,
+            abstractToken,
+            augmentToken,
+            externalToken,
+            staticToken,
+            covariantToken,
+            lateToken,
+            varFinalOrConst,
+            beforeType,
+            noType,
+            syntheticName,
+            kind,
+            enclosingDeclarationName,
+            /* nameIsRecovered = */ true);
+        listener.endMember();
+        return token;
+      }
+    }
     TypeInfo typeInfo = computeType(
       token,
       /* required = */ false,

pkg/_fe_analyzer_shared/lib/src/parser/token_stream_rewriter.dart

@@ -18,6 +18,11 @@ import '../scanner/token.dart'
         TokenType;
 
 abstract class TokenStreamRewriter {
+  /// Drops any tokens after [before] and before [after].
+  void dropRange(Token before, Token after) {
+    _setNext(before, after);
+  }
+
   /// Insert a synthetic open and close parenthesis and return the new synthetic
   /// open parenthesis. If [insertIdentifier] is true, then a synthetic
   /// identifier is included between the open and close parenthesis.

pkg/analysis_server/lib/src/services/correction/error_fix_status.yaml

@@ -2651,6 +2651,8 @@ ParserErrorCode.OUT_OF_ORDER_CLAUSES:
   status: needsEvaluation
 ParserErrorCode.PATTERN_ASSIGNMENT_DECLARES_VARIABLE:
   status: needsEvaluation
+ParserErrorCode.PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD:
+  status: needsEvaluation
 ParserErrorCode.POSITIONAL_AFTER_NAMED_ARGUMENT:
   status: needsEvaluation
 ParserErrorCode.POSITIONAL_PARAMETER_OUTSIDE_GROUP:

pkg/analyzer/lib/src/dart/error/syntactic_errors.g.dart

@@ -166,6 +166,7 @@ final fastaAnalyzerErrorCodes = <ErrorCode?>[
   ParserErrorCode.VARIABLE_PATTERN_KEYWORD_IN_DECLARATION_CONTEXT,
   ParserErrorCode.INVALID_INSIDE_UNARY_PATTERN,
   ParserErrorCode.LATE_PATTERN_VARIABLE_DECLARATION,
+  ParserErrorCode.PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD,
 ];
 
 class ParserErrorCode extends ErrorCode {
@@ -1556,6 +1557,17 @@ class ParserErrorCode extends ErrorCode {
         "pattern variable declaration.",
   );
 
+  ///  No parameters.
+  static const ParserErrorCode
+      PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD = ParserErrorCode(
+    'PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD',
+    "A pattern variable declaration may not appear outside a function or "
+        "method.",
+    correctionMessage:
+        "Try declaring ordinary variables and assigning from within a function "
+        "or method.",
+  );
+
   static const ParserErrorCode POSITIONAL_AFTER_NAMED_ARGUMENT =
       ParserErrorCode(
     'POSITIONAL_AFTER_NAMED_ARGUMENT',

pkg/analyzer/lib/src/error/error_code_values.g.dart

@@ -816,6 +816,7 @@ const List<ErrorCode> errorCodeValues = [
   ParserErrorCode.NULL_AWARE_CASCADE_OUT_OF_ORDER,
   ParserErrorCode.OUT_OF_ORDER_CLAUSES,
   ParserErrorCode.PATTERN_ASSIGNMENT_DECLARES_VARIABLE,
+  ParserErrorCode.PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD,
   ParserErrorCode.POSITIONAL_AFTER_NAMED_ARGUMENT,
   ParserErrorCode.POSITIONAL_PARAMETER_OUTSIDE_GROUP,
   ParserErrorCode.PREFIX_AFTER_COMBINATOR,

pkg/analyzer/test/generated/patterns_parser_test.dart

@@ -7538,6 +7538,84 @@ ForStatement
 ''');
   }
 
+  test_patternVariableDeclaration_inClass() {
+    // If a pattern variable declaration appears outside a function or method,
+    // the parser recovers by replacing the pattern with a synthetic identifier,
+    // so that it parses as an ordinary field or top level variable declaration.
+    _parse('''
+class C {
+  var (a, b) = (0, 1);
+}
+''', errors: [
+      error(
+          ParserErrorCode
+              .PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD,
+          16,
+          6),
+    ]);
+    var node = findNode.classDeclaration('class');
+    assertParsedNodeText(node, r'''
+ClassDeclaration
+  classKeyword: class
+  name: C
+  leftBracket: {
+  members
+    FieldDeclaration
+      fields: VariableDeclarationList
+        keyword: var
+        variables
+          VariableDeclaration
+            name: <empty> <synthetic>
+            equals: =
+            initializer: RecordLiteral
+              leftParenthesis: (
+              fields
+                IntegerLiteral
+                  literal: 0
+                IntegerLiteral
+                  literal: 1
+              rightParenthesis: )
+      semicolon: ;
+  rightBracket: }
+''');
+  }
+
+  test_patternVariableDeclaration_topLevel() {
+    // If a pattern variable declaration appears outside a function or method,
+    // the parser recovers by replacing the pattern with a synthetic identifier,
+    // so that it parses as an ordinary field or top level variable declaration.
+    _parse('''
+var (a, b) = (0, 1);
+''', errors: [
+      error(
+          ParserErrorCode
+              .PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD,
+          4,
+          6),
+    ]);
+    var node = findNode.unit;
+    assertParsedNodeText(node, r'''
+CompilationUnit
+  declarations
+    TopLevelVariableDeclaration
+      variables: VariableDeclarationList
+        keyword: var
+        variables
+          VariableDeclaration
+            name: <empty> <synthetic>
+            equals: =
+            initializer: RecordLiteral
+              leftParenthesis: (
+              fields
+                IntegerLiteral
+                  literal: 0
+                IntegerLiteral
+                  literal: 1
+              rightParenthesis: )
+      semicolon: ;
+''');
+  }
+
   test_patternVariableDeclarationStatement_disallowsConst() {
     // TODO(paulberry): do better error recovery.
     _parse('''

pkg/front_end/messages.yaml

@@ -6743,6 +6743,18 @@ LatePatternVariableDeclaration:
       late var (y, z) = x;
     }
 
+PatternVariableDeclarationOutsideFunctionOrMethod:
+  problemMessage: A pattern variable declaration may not appear outside a function or method.
+  correctionMessage: Try declaring ordinary variables and assigning from within a function or method.
+  analyzerCode: ParserErrorCode.PATTERN_VARIABLE_DECLARATION_OUTSIDE_FUNCTION_OR_METHOD
+  index: 152
+  experiments: patterns
+  comment: No parameters.
+  script: |
+    class C {
+      var (a, b) = (0, 1);
+    }
+
 WeakReferenceNotStatic:
   problemMessage: "Weak reference pragma can be used on a static method only."
 

pkg/front_end/parser_testcases/augmentation/member_declarations.dart.intertwined.expect

@@ -248,6 +248,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(}, null, augment, null, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, var, })
                 listener: handleNoType(var)
@@ -263,6 +265,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, final, ;)
                 listener: handleNoType(final)
@@ -285,6 +289,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, const, ;)
                 listener: handleNoType(const)
@@ -324,6 +330,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, var, ;)
                 listener: handleNoType(var)
@@ -339,6 +347,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, final, ;)
                 listener: handleNoType(final)
@@ -582,6 +592,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(}, null, augment, null, static, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, var, })
                 listener: handleNoType(var)
@@ -597,6 +609,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, final, ;)
                 listener: handleNoType(final)
@@ -619,6 +633,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, const, ;)
                 listener: handleNoType(const)
@@ -658,6 +674,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, late, var, ;)
                 listener: handleNoType(var)
@@ -673,6 +691,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, late, final, ;)
                 listener: handleNoType(final)
@@ -945,6 +965,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(var)
+              skipObjectPatternRest(field)
             parseFields(}, null, augment, null, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, null, null, null, var, })
               listener: handleNoType(var)
@@ -960,6 +982,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(final)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, null, null, null, final, ;)
               listener: handleNoType(final)
@@ -982,6 +1006,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(const)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, null, null, null, const, ;)
               listener: handleNoType(const)
@@ -1021,6 +1047,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(var)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, null, null, late, var, ;)
               listener: handleNoType(var)
@@ -1036,6 +1064,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(final)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, null, null, late, final, ;)
               listener: handleNoType(final)
@@ -1279,6 +1309,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(var)
+              skipObjectPatternRest(field)
             parseFields(}, null, augment, null, static, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, static, null, null, var, })
               listener: handleNoType(var)
@@ -1294,6 +1326,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(final)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, static, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, static, null, null, final, ;)
               listener: handleNoType(final)
@@ -1316,6 +1350,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(const)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, static, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, static, null, null, const, ;)
               listener: handleNoType(const)
@@ -1355,6 +1391,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(var)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, static, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, static, null, late, var, ;)
               listener: handleNoType(var)
@@ -1370,6 +1408,8 @@ parseUnit(class)
               listener: beginMetadataStar(augment)
               listener: endMetadataStar(0)
             listener: beginMember()
+            skipOuterPattern(final)
+              skipObjectPatternRest(field)
             parseFields(;, null, augment, null, static, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Mixin, Mixin, false)
               listener: beginFields(DeclarationKind.Mixin, null, augment, null, static, null, late, final, ;)
               listener: handleNoType(final)

pkg/front_end/parser_testcases/augmentation/member_errors.dart.intertwined.expect

@@ -668,6 +668,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, var, ;)
                 listener: handleNoType(var)
@@ -685,6 +687,8 @@ parseUnit(class)
               reportRecoverableError(external, Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}], external, external)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, external, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, external, null, null, null, var, ;)
                 listener: handleNoType(var)
@@ -702,6 +706,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, external, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, null, null, null, var, ;)
                 listener: handleNoType(var)
@@ -719,6 +725,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, final, ;)
                 listener: handleNoType(final)
@@ -743,6 +751,8 @@ parseUnit(class)
               reportRecoverableError(external, Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}], external, external)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, external, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, external, null, null, null, final, ;)
                 listener: handleNoType(final)
@@ -760,6 +770,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, external, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, null, null, null, final, ;)
                 listener: handleNoType(final)
@@ -777,6 +789,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, null, const, ;)
                 listener: handleNoType(const)
@@ -801,6 +815,8 @@ parseUnit(class)
               reportRecoverableError(external, Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}], external, external)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, external, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, external, null, null, null, const, ;)
                 listener: handleNoType(const)
@@ -820,6 +836,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}])
                 listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, external, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, null, null, null, const, ;)
                 listener: handleNoType(const)
@@ -896,6 +914,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, var, ;)
                 listener: handleNoType(var)
@@ -911,6 +931,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, var, ;)
                 listener: handleNoType(var)
@@ -926,6 +948,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, var, ;)
                 listener: handleNoType(var)
@@ -943,6 +967,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, final, ;)
                 listener: handleNoType(final)
@@ -958,6 +984,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, final, ;)
                 listener: handleNoType(final)
@@ -973,6 +1001,8 @@ parseUnit(class)
                 listener: beginMetadataStar(augment)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, null, null, late, final, ;)
                 listener: handleNoType(final)
@@ -1489,6 +1519,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(}, null, augment, null, static, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, var, })
                 listener: handleNoType(var)
@@ -1506,6 +1538,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, null, static, null, null, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, var, ;)
                 listener: handleNoType(var)
@@ -1523,6 +1557,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, final, ;)
                 listener: handleNoType(final)
@@ -1547,6 +1583,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, null, static, null, null, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, final, ;)
                 listener: handleNoType(final)
@@ -1571,6 +1609,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, null, const, ;)
                 listener: handleNoType(const)
@@ -1595,6 +1635,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, null, static, null, null, const, const, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, const, ;)
                 listener: handleNoType(const)
@@ -1657,6 +1699,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, late, var, ;)
                 listener: handleNoType(var)
@@ -1674,6 +1718,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, null, static, null, late, var, var, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, late, var, ;)
                 listener: handleNoType(var)
@@ -1691,6 +1737,8 @@ parseUnit(class)
               reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, augment, null, static, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, augment, null, static, null, late, final, ;)
                 listener: handleNoType(final)
@@ -1708,6 +1756,8 @@ parseUnit(class)
               reportRecoverableError(augment, Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'augment' should be before the modifier 'static'., Try re-ordering the modifiers., {string: augment, string2: static}], augment, augment)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(field)
               parseFields(;, null, null, null, static, null, late, final, final, Instance of 'NoType', field, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, late, final, ;)
                 listener: handleNoType(final)

pkg/front_end/parser_testcases/augmentation/top_level_declarations.dart.intertwined.expect

@@ -203,6 +203,8 @@ parseUnit(augment)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(})
       listener: beginTopLevelMember(augment)
+      skipOuterPattern(var)
+        skipObjectPatternRest(field)
       parseFields(}, null, augment, null, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, null, var, })
         listener: handleNoType(var)
@@ -218,6 +220,8 @@ parseUnit(augment)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(augment)
+      skipOuterPattern(final)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, null, null, null, null, final, final, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, null, final, ;)
         listener: handleNoType(final)
@@ -240,6 +244,8 @@ parseUnit(augment)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(augment)
+      skipOuterPattern(const)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, null, null, null, null, const, const, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, null, const, ;)
         listener: handleNoType(const)
@@ -279,6 +285,8 @@ parseUnit(augment)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(augment)
+      skipOuterPattern(var)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, null, null, null, late, var, var, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, late, var, ;)
         listener: handleNoType(var)
@@ -294,6 +302,8 @@ parseUnit(augment)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(augment)
+      skipOuterPattern(final)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, null, null, null, late, final, final, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, late, final, ;)
         listener: handleNoType(final)

pkg/front_end/parser_testcases/augmentation/top_level_errors.dart.intertwined.expect

@@ -579,6 +579,8 @@ parseUnit(augment)
       listener: beginTopLevelMember(augment)
       reportRecoverableErrorWithToken(augment, Instance of 'Template<(Token) => Message>')
         listener: handleRecoverableError(Message[DuplicatedModifier, The modifier 'augment' was already specified., Try removing all but one occurrence of the modifier., {lexeme: augment}], augment, augment)
+      skipOuterPattern(var)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, null, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -596,6 +598,8 @@ parseUnit(augment)
       listener: beginTopLevelMember(augment)
       reportRecoverableError(external, Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}])
         listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'external' and 'augment'., Try removing one of the keywords., {string: external, string2: augment}], external, external)
+      skipOuterPattern(var)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, external, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, external, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -613,6 +617,8 @@ parseUnit(augment)
       listener: beginTopLevelMember(external)
       reportRecoverableError(augment, Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}])
         listener: handleRecoverableError(Message[ConflictingModifiers, Members can't be declared to be both 'augment' and 'external'., Try removing one of the keywords., {string: augment, string2: external}], augment, augment)
+      skipOuterPattern(var)
+        skipObjectPatternRest(field)
       parseFields(;, null, augment, external, null, null, null, var, var, Instance of 'NoType', field, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, augment, external, null, null, null, var, ;)
         listener: handleNoType(var)

pkg/front_end/parser_testcases/enhanced_enums/entries_with_type_arguments.dart.intertwined.expect

@@ -120,6 +120,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -149,6 +151,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(named)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_22314.dart.intertwined.expect

@@ -8,6 +8,8 @@ parseUnit(const)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl()
       listener: beginTopLevelMember(const)
+      skipOuterPattern(const)
+        skipObjectPatternRest(annotation)
       parseFields(, null, null, null, null, null, null, const, const, Instance of 'NoType', annotation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, const, )
         listener: handleNoType(const)
@@ -53,6 +55,8 @@ parseUnit(const)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(String)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleType', message, DeclarationKind.Class, Annotation, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(String, typeReference)
@@ -70,6 +74,8 @@ parseUnit(const)
                 listener: beginMetadataStar(const)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(Annotation)
               parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, Annotation, DeclarationKind.Class, Annotation, false)
                 listener: beginMethod(DeclarationKind.Class, null, null, null, null, const, null, Annotation)
                 listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_42229_prime_6.dart.intertwined.expect

@@ -8,6 +8,8 @@ parseUnit(const)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl()
       listener: beginTopLevelMember(const)
+      skipOuterPattern(const)
+        skipObjectPatternRest(foo)
       parseFields(, null, null, null, null, null, null, const, const, Instance of 'NoType', foo, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, const, )
         listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_45251.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 ensureIdentifier(final, typeReference)
@@ -82,6 +84,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -127,6 +131,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -166,6 +172,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -220,6 +228,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -263,6 +273,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -329,6 +341,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -383,6 +397,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -443,6 +459,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_const.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 ensureIdentifier(final, typeReference)
@@ -81,6 +83,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -129,6 +133,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -167,6 +173,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -223,6 +231,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -268,6 +278,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -333,6 +345,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -386,6 +400,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -449,6 +465,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_list.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(List, typeReference)
@@ -78,6 +80,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -119,6 +123,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -157,6 +163,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -204,6 +212,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -243,6 +253,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -293,6 +305,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -336,6 +350,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -380,6 +396,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_list_const.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(List, typeReference)
@@ -77,6 +79,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -121,6 +125,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -158,6 +164,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -207,6 +215,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -248,6 +258,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -297,6 +309,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -337,6 +351,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -384,6 +400,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_list_new.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(List, typeReference)
@@ -77,6 +79,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -123,6 +127,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -160,6 +166,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -210,6 +218,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -252,6 +262,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -301,6 +313,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -341,6 +355,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)
@@ -390,6 +406,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(List)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(List, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_new.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 ensureIdentifier(final, typeReference)
@@ -81,6 +83,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -131,6 +135,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -169,6 +175,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -226,6 +234,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -272,6 +282,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -337,6 +349,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -390,6 +404,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)
@@ -455,6 +471,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Map)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 ensureIdentifier(final, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_set.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(Set, typeReference)
@@ -75,6 +77,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -113,6 +117,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -148,6 +154,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -195,6 +203,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -234,6 +244,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -284,6 +296,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -325,6 +339,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -369,6 +385,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_set_const.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(Set, typeReference)
@@ -74,6 +76,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -115,6 +119,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -149,6 +155,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -198,6 +206,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -239,6 +249,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -288,6 +300,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -328,6 +342,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -375,6 +391,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_45251_set_new.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo1, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(Set, typeReference)
@@ -74,6 +76,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo2, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -117,6 +121,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo3, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -151,6 +157,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo4, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -201,6 +209,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo5, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -243,6 +253,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo6, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -292,6 +304,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo7, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -332,6 +346,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo8, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)
@@ -381,6 +397,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(Set)
               parseFields(;, null, null, null, null, null, null, final, final, Instance of 'SimpleTypeWith1Argument', foo9, DeclarationKind.Class, F, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, ;)
                 listener: handleIdentifier(Set, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_48380_1.dart.intertwined.expect

@@ -62,6 +62,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -91,6 +93,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_1_comma.dart.intertwined.expect

@@ -83,6 +83,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -112,6 +114,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_1_comma_ok.dart.intertwined.expect

@@ -76,6 +76,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -105,6 +107,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_1_ok.dart.intertwined.expect

@@ -55,6 +55,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -84,6 +86,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_2.dart.intertwined.expect

@@ -57,6 +57,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -86,6 +88,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_2_comma.dart.intertwined.expect

@@ -78,6 +78,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -107,6 +109,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_2_comma_ok.dart.intertwined.expect

@@ -75,6 +75,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -104,6 +106,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_2_ok.dart.intertwined.expect

@@ -54,6 +54,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -83,6 +85,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_3.dart.intertwined.expect

@@ -50,6 +50,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -79,6 +81,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_3_comma.dart.intertwined.expect

@@ -67,6 +67,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -96,6 +98,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_3_comma_ok.dart.intertwined.expect

@@ -60,6 +60,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -89,6 +91,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48380_3_ok.dart.intertwined.expect

@@ -43,6 +43,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(E)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)
@@ -72,6 +74,8 @@ parseUnit(enum)
             listener: beginMetadataStar(const)
             listener: endMetadataStar(0)
           listener: beginMember()
+          skipOuterPattern(const)
+            skipObjectPatternRest(foo)
           parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, E, DeclarationKind.Enum, E, false)
             listener: beginMethod(DeclarationKind.Enum, null, null, null, null, const, null, E)
             listener: handleNoType(const)

pkg/front_end/parser_testcases/error_recovery/issue_48411.dart.intertwined.expect

@@ -895,6 +895,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleType', y, DeclarationKind.Class, E, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(int, typeReference)

pkg/front_end/parser_testcases/error_recovery/issue_48411_prime.dart.intertwined.expect

@@ -880,6 +880,8 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'SimpleType', y, DeclarationKind.Class, E, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 listener: handleIdentifier(int, typeReference)

pkg/front_end/parser_testcases/general/function_reference_following_token.dart.intertwined.expect

@@ -8,6 +8,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl()
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_closeBrace)
       parseFields(, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_closeBrace, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, )
         listener: handleNoType(var)
@@ -53,6 +55,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_closeBracket)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_closeBracket, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -98,6 +102,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_closeParen)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_closeParen, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -153,6 +159,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_colon)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_colon, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -205,6 +213,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_comma)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_comma, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -256,6 +266,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_equals)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_equals, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -301,6 +313,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_not_equals)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_not_equals, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -346,6 +360,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_openParen)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_openParen, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -386,6 +402,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_period_methodInvocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_period_methodInvocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -428,6 +446,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_period_methodInvocation_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_period_methodInvocation_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -485,6 +505,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_period_propertyAccess)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_period_propertyAccess, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -534,6 +556,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(typeArgs_semicolon)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', typeArgs_semicolon, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -572,6 +596,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_ampersand)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_ampersand, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -675,6 +701,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_as)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_as, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -764,6 +792,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_asterisk)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_asterisk, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -867,6 +897,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_bang_openBracket)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_bang_openBracket, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -964,6 +996,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_bang_paren)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_bang_paren, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1063,6 +1097,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_bar)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_bar, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1166,6 +1202,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_caret)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_caret, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1269,6 +1307,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_is)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_is, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1368,6 +1408,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_lessThan)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_lessThan, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1432,6 +1474,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_minus)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_minus, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1522,6 +1566,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_openBracket)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_openBracket, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1616,6 +1662,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_openBracket_error)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_openBracket_error, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1726,6 +1774,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_openBracket_unambiguous)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_openBracket_unambiguous, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1833,6 +1883,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_percent)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_percent, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1936,6 +1988,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_period_period)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_period_period, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2041,6 +2095,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_plus)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_plus, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2146,6 +2202,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2252,6 +2310,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question_period_methodInvocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question_period_methodInvocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2356,6 +2416,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question_period_methodInvocation_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question_period_methodInvocation_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2464,6 +2526,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question_period_period)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question_period_period, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2574,6 +2638,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question_period_propertyAccess)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question_period_propertyAccess, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2674,6 +2740,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_question_question)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_question_question, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2777,6 +2845,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_slash)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_slash, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -2880,6 +2950,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(operators_tilde_slash)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', operators_tilde_slash, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)

pkg/front_end/parser_testcases/general/function_reference_kinds.dart.intertwined.expect

@@ -8,6 +8,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl()
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(simpleIdentifier)
       parseFields(, null, null, null, null, null, null, var, var, Instance of 'NoType', simpleIdentifier, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, )
         listener: handleNoType(var)
@@ -46,6 +48,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(method)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', method, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -99,6 +103,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(prefixedIdentifier)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', prefixedIdentifier, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -148,6 +154,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(three_identifiers)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', three_identifiers, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)

pkg/front_end/parser_testcases/general/new_as_identifier.dart.intertwined.expect

@@ -624,6 +624,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(})
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_const)
       parseFields(}, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_const, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, })
         listener: handleNoType(var)
@@ -665,6 +667,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_const_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_const_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -707,6 +711,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_const_prefixed)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_const_prefixed, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -749,6 +755,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_const_prefixed_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_const_prefixed_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -795,6 +803,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_explicit)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_explicit, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -837,6 +847,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_explicit_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_explicit_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -880,6 +892,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_explicit_prefixed)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_explicit_prefixed, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -923,6 +937,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_explicit_prefixed_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_explicit_prefixed_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -970,6 +986,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_implicit)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_implicit, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1016,6 +1034,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_implicit_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_implicit_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1057,6 +1077,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_implicit_prefixed)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_implicit_prefixed, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1114,6 +1136,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_invocation_implicit_prefixed_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_invocation_implicit_prefixed_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1159,6 +1183,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1201,6 +1227,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1249,6 +1277,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_generic_method_invocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_generic_method_invocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1312,6 +1342,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_method_invocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_method_invocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1369,6 +1401,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_prefixed)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_prefixed, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1422,6 +1456,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_prefixed_generic)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_prefixed_generic, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1481,6 +1517,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_prefixed_generic_method_invocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_prefixed_generic_method_invocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)
@@ -1555,6 +1593,8 @@ parseUnit(class)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(constructor_tearoff_prefixed_method_invocation)
       parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', constructor_tearoff_prefixed_method_invocation, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, ;)
         listener: handleNoType(var)

pkg/front_end/parser_testcases/nnbd/error_recovery/abstract_placement.dart.intertwined.expect

@@ -33,6 +33,8 @@ parseUnit(abstract)
               reportRecoverableError(abstract, Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}], abstract, abstract)
               listener: beginMember()
+              skipOuterPattern(abstract)
+                skipObjectPatternRest(int)
               parseFields({, abstract, null, null, null, null, null, final, abstract, Instance of 'SimpleType', i1, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, abstract, null, null, null, null, null, final, {)
                 listener: handleIdentifier(int, typeReference)
@@ -52,6 +54,8 @@ parseUnit(abstract)
               reportRecoverableError(abstract, Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}], abstract, abstract)
               listener: beginMember()
+              skipOuterPattern(abstract)
+                skipObjectPatternRest(i2)
               parseFields(;, abstract, null, null, null, null, null, final, abstract, Instance of 'NoType', i2, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, abstract, null, null, null, null, null, final, ;)
                 listener: handleNoType(abstract)
@@ -88,6 +92,8 @@ parseUnit(abstract)
               reportRecoverableError(abstract, Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'covariant'., Try re-ordering the modifiers., {string: abstract, string2: covariant}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'covariant'., Try re-ordering the modifiers., {string: abstract, string2: covariant}], abstract, abstract)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(i4)
               parseFields(;, abstract, null, null, null, covariant, null, var, var, Instance of 'NoType', i4, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, abstract, null, null, null, covariant, null, var, ;)
                 listener: handleNoType(var)
@@ -105,6 +111,8 @@ parseUnit(abstract)
               reportRecoverableError(abstract, Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'final'., Try re-ordering the modifiers., {string: abstract, string2: final}], abstract, abstract)
               listener: beginMember()
+              skipOuterPattern(abstract)
+                skipObjectPatternRest(i5)
               parseFields(;, abstract, null, null, null, null, null, final, abstract, Instance of 'NoType', i5, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, abstract, null, null, null, null, null, final, ;)
                 listener: handleNoType(abstract)
@@ -122,6 +130,8 @@ parseUnit(abstract)
               reportRecoverableError(abstract, Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'var'., Try re-ordering the modifiers., {string: abstract, string2: var}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'var'., Try re-ordering the modifiers., {string: abstract, string2: var}], abstract, abstract)
               listener: beginMember()
+              skipOuterPattern(abstract)
+                skipObjectPatternRest(i6)
               parseFields(;, abstract, null, null, null, null, null, var, abstract, Instance of 'NoType', i6, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, abstract, null, null, null, null, null, var, ;)
                 listener: handleNoType(abstract)
@@ -184,6 +194,8 @@ parseUnit(abstract)
         listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'abstract' should be before the modifier 'var'., Try re-ordering the modifiers., {string: abstract, string2: var}], abstract, abstract)
       reportRecoverableErrorWithToken(abstract, Instance of 'Template<(Token) => Message>')
         listener: handleRecoverableError(Message[ExtraneousModifier, Can't have modifier 'abstract' here., Try removing 'abstract'., {lexeme: abstract}], abstract, abstract)
+      skipOuterPattern(abstract)
+        skipObjectPatternRest(foo)
       parseFields(}, null, null, null, null, null, null, var, abstract, Instance of 'NoType', foo, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, })
         listener: handleNoType(abstract)

pkg/front_end/parser_testcases/nnbd/error_recovery/external_placement.dart.intertwined.expect

@@ -10,6 +10,8 @@ parseUnit(final)
       listener: beginTopLevelMember(final)
       reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}])
         listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}], external, external)
+      skipOuterPattern(external)
+        skipObjectPatternRest(int)
       parseFields(, null, null, external, null, null, null, final, external, Instance of 'SimpleType', i1, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, external, null, null, null, final, )
         listener: handleIdentifier(int, typeReference)
@@ -29,6 +31,8 @@ parseUnit(final)
       listener: beginTopLevelMember(var)
       reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'var'., Try re-ordering the modifiers., {string: external, string2: var}])
         listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'var'., Try re-ordering the modifiers., {string: external, string2: var}], external, external)
+      skipOuterPattern(external)
+        skipObjectPatternRest(i2)
       parseFields(;, null, null, external, null, null, null, var, external, Instance of 'NoType', i2, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, external, null, null, null, var, ;)
         listener: handleNoType(external)
@@ -88,6 +92,8 @@ parseUnit(final)
               reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}], external, external)
               listener: beginMember()
+              skipOuterPattern(external)
+                skipObjectPatternRest(int)
               parseFields(;, null, null, external, null, null, null, final, external, Instance of 'SimpleType', i4, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, null, null, null, final, ;)
                 listener: handleIdentifier(int, typeReference)
@@ -107,6 +113,8 @@ parseUnit(final)
               reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'final'., Try re-ordering the modifiers., {string: external, string2: final}], external, external)
               listener: beginMember()
+              skipOuterPattern(external)
+                skipObjectPatternRest(i5)
               parseFields(;, null, null, external, null, null, null, final, external, Instance of 'NoType', i5, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, null, null, null, final, ;)
                 listener: handleNoType(external)
@@ -124,6 +132,8 @@ parseUnit(final)
               reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}], external, external)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(i6)
               parseFields(;, null, null, external, static, null, null, final, final, Instance of 'NoType', i6, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, static, null, null, final, ;)
                 listener: handleNoType(final)
@@ -141,6 +151,8 @@ parseUnit(final)
               reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}], external, external)
               listener: beginMember()
+              skipOuterPattern(external)
+                skipObjectPatternRest(i7)
               parseFields(;, null, null, external, static, null, null, final, external, Instance of 'NoType', i7, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, static, null, null, final, ;)
                 listener: handleNoType(external)
@@ -160,6 +172,8 @@ parseUnit(final)
               reportRecoverableError(external, Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}])
                 listener: handleRecoverableError(Message[ModifierOutOfOrder, The modifier 'external' should be before the modifier 'static'., Try re-ordering the modifiers., {string: external, string2: static}], external, external)
               listener: beginMember()
+              skipOuterPattern(external)
+                skipObjectPatternRest(i8)
               parseFields(;, null, null, external, static, null, null, final, external, Instance of 'NoType', i8, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, external, static, null, null, final, ;)
                 listener: handleNoType(external)

pkg/front_end/parser_testcases/nnbd/issue_39858_prime1.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(var)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x1)
               parseFields({, null, null, null, null, null, null, var, var, Instance of 'NoType', x1, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, var, {)
                 listener: handleNoType(var)
@@ -46,6 +48,8 @@ parseUnit(class)
                 listener: beginMetadataStar(static)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x2)
               parseFields(;, null, null, null, static, null, null, var, var, Instance of 'NoType', x2, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, var, ;)
                 listener: handleNoType(var)
@@ -61,6 +65,8 @@ parseUnit(class)
                 listener: beginMetadataStar(covariant)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x3)
               parseFields(;, null, null, null, null, covariant, null, var, var, Instance of 'NoType', x3, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, covariant, null, var, ;)
                 listener: handleNoType(var)
@@ -76,6 +82,8 @@ parseUnit(class)
                 listener: beginMetadataStar(var)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x4)
               parseFields(;, null, null, null, null, null, null, var, var, Instance of 'NoType', x4, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, var, ;)
                 listener: handleNoType(var)
@@ -98,6 +106,8 @@ parseUnit(class)
                 listener: beginMetadataStar(static)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x5)
               parseFields(;, null, null, null, static, null, null, var, var, Instance of 'NoType', x5, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, var, ;)
                 listener: handleNoType(var)
@@ -120,6 +130,8 @@ parseUnit(class)
                 listener: beginMetadataStar(covariant)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(var)
+                skipObjectPatternRest(x6)
               parseFields(;, null, null, null, null, covariant, null, var, var, Instance of 'NoType', x6, DeclarationKind.Class, X, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, covariant, null, var, ;)
                 listener: handleNoType(var)

pkg/front_end/parser_testcases/nnbd/issue_40805_01.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(covariant)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields({, null, null, null, null, covariant, late, final, final, Instance of 'SimpleType', x, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, covariant, late, final, {)
                 listener: handleIdentifier(int, typeReference)

pkg/front_end/parser_testcases/nnbd/issue_40805_02.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(covariant)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields({, null, null, null, null, covariant, late, final, final, Instance of 'SimpleType', x, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, covariant, late, final, {)
                 listener: handleIdentifier(int, typeReference)

pkg/front_end/parser_testcases/nnbd/issue_40805_03.dart.intertwined.expect

@@ -31,6 +31,8 @@ parseUnit(class)
                 listener: beginMetadataStar(covariant)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields({, null, null, null, null, covariant, null, final, final, Instance of 'SimpleType', x, DeclarationKind.Class, C, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, covariant, null, final, {)
                 reportRecoverableError(covariant, FinalAndCovariant)

pkg/front_end/parser_testcases/non-nnbd/issue_40267_conditional_4.dart.intertwined.expect

@@ -8,6 +8,8 @@ parseUnit(var)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl()
       listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+        skipObjectPatternRest(a)
       parseFields(, null, null, null, null, null, null, var, var, Instance of 'NoType', a, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, )
         listener: handleNoType(var)

pkg/front_end/parser_testcases/non-nnbd/use_late_in_non_nnbd.dart.intertwined.expect

@@ -72,6 +72,8 @@ parseUnit(int)
       indicatesMethodOrField(;)
       reportRecoverableErrorWithToken(late, Instance of 'Template<(Token) => Message>')
         listener: handleRecoverableError(Message[UnexpectedModifierInNonNnbd, The modifier 'late' is only available in null safe libraries., null, {lexeme: late}], late, late)
+      skipOuterPattern(final)
+        skipObjectPatternRest(int)
       parseFields(late, null, null, null, null, null, late, final, final, Instance of 'SimpleType', x4, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, late, final, late)
         listener: handleIdentifier(int, typeReference)
@@ -424,6 +426,8 @@ parseUnit(int)
               reportRecoverableErrorWithToken(late, Instance of 'Template<(Token) => Message>')
                 listener: handleRecoverableError(Message[UnexpectedModifierInNonNnbd, The modifier 'late' is only available in null safe libraries., null, {lexeme: late}], late, late)
               listener: beginMember()
+              skipOuterPattern(final)
+                skipObjectPatternRest(int)
               parseFields(late, null, null, null, null, null, late, final, final, Instance of 'SimpleType', z4, DeclarationKind.Class, Foo, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, late, final, late)
                 listener: handleIdentifier(int, typeReference)

pkg/front_end/parser_testcases/patterns/const_patterns.dart.intertwined.expect

@@ -33,6 +33,8 @@ parseUnit(import)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(const)
+      skipOuterPattern(const)
+        skipObjectPatternRest(int)
       parseFields(;, null, null, null, null, null, null, const, const, Instance of 'SimpleType', value, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, const, ;)
         listener: handleIdentifier(int, typeReference)
@@ -109,6 +111,8 @@ parseUnit(import)
                 listener: beginMetadataStar(const)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(Class)
               parseMethod({, null, null, null, null, null, null, const, const, Instance of 'NoType', null, Class, DeclarationKind.Class, Class, false)
                 listener: beginMethod(DeclarationKind.Class, null, null, null, null, const, null, Class)
                 listener: handleNoType(const)
@@ -152,6 +156,8 @@ parseUnit(import)
                 listener: beginMetadataStar(const)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(named)
               parseMethod(;, null, null, null, null, null, null, const, const, Instance of 'NoType', null, Class, DeclarationKind.Class, Class, false)
                 listener: beginMethod(DeclarationKind.Class, null, null, null, null, const, null, Class)
                 listener: handleNoType(const)
@@ -3074,6 +3080,8 @@ parseUnit(import)
                 listener: beginMetadataStar(const)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(GenericClass)
               parseMethod({, null, null, null, null, null, null, const, const, Instance of 'NoType', null, GenericClass, DeclarationKind.Class, GenericClass, false)
                 listener: beginMethod(DeclarationKind.Class, null, null, null, null, const, null, GenericClass)
                 listener: handleNoType(const)

pkg/front_end/parser_testcases/patterns/const_patterns_binary.dart.intertwined.expect

@@ -33,6 +33,8 @@ parseUnit(import)
       listener: endMetadataStar(0)
     parseTopLevelMemberImpl(;)
       listener: beginTopLevelMember(const)
+      skipOuterPattern(const)
+        skipObjectPatternRest(value)
       parseFields(;, null, null, null, null, null, null, const, const, Instance of 'NoType', value, DeclarationKind.TopLevel, null, false)
         listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, const, ;)
         listener: handleNoType(const)
@@ -80,6 +82,8 @@ parseUnit(import)
                 listener: beginMetadataStar(static)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
+                skipObjectPatternRest(value)
               parseFields({, null, null, null, static, null, null, const, const, Instance of 'NoType', value, DeclarationKind.Class, Class, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, const, {)
                 listener: handleNoType(const)

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_inClass.dart

@@ -0,0 +1,3 @@
+class C {
+  var (a, b) = (0, 1);
+}

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_inClass.dart.expect

@@ -0,0 +1,38 @@
+Problems reported:
+
+parser/patterns/patternVariableDeclaration_inClass:2:7: A pattern variable declaration may not appear outside a function or method.
+  var (a, b) = (0, 1);
+      ^^^^^^
+
+beginCompilationUnit(class)
+  beginMetadataStar(class)
+  endMetadataStar(0)
+  beginClassOrMixinOrNamedMixinApplicationPrelude(class)
+    handleIdentifier(C, classOrMixinDeclaration)
+    handleNoTypeVariables({)
+    beginClassDeclaration(class, null, null, null, null, null, null, null, null, null, C)
+      handleNoType(C)
+      handleClassExtends(null, 1)
+      handleClassNoWithClause()
+      handleImplements(null, 0)
+      handleClassHeader(class, class, null)
+      beginClassOrMixinOrExtensionBody(DeclarationKind.Class, {)
+        beginMetadataStar(var)
+        endMetadataStar(0)
+        beginMember()
+          handleRecoverableError(PatternVariableDeclarationOutsideFunctionOrMethod, (, ))
+          beginFields(DeclarationKind.Class, null, null, null, null, null, null, var, {)
+            handleNoType(var)
+            handleIdentifier(, fieldDeclaration)
+            beginFieldInitializer(=)
+              beginParenthesizedExpressionOrRecordLiteral(()
+                handleLiteralInt(0)
+                handleLiteralInt(1)
+              endRecordLiteral((, 2, null)
+            endFieldInitializer(=, ;)
+          endClassFields(null, null, null, null, null, null, var, 1, var, ;)
+        endMember()
+      endClassOrMixinOrExtensionBody(DeclarationKind.Class, 1, {, })
+    endClassDeclaration(class, })
+  endTopLevelDeclaration()
+endCompilationUnit(1, )

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_inClass.dart.intertwined.expect

@@ -0,0 +1,81 @@
+parseUnit(class)
+  skipErrorTokens(class)
+  listener: beginCompilationUnit(class)
+  syntheticPreviousToken(class)
+  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
+    parseMetadataStar()
+      listener: beginMetadataStar(class)
+      listener: endMetadataStar(0)
+    parseTopLevelKeywordDeclaration(, class, null, null, null, null, null, Instance of 'DirectiveContext')
+      parseClassOrNamedMixinApplication(null, null, null, null, null, null, null, null, null, class)
+        listener: beginClassOrMixinOrNamedMixinApplicationPrelude(class)
+        ensureIdentifier(class, classOrMixinDeclaration)
+          listener: handleIdentifier(C, classOrMixinDeclaration)
+        listener: handleNoTypeVariables({)
+        listener: beginClassDeclaration(class, null, null, null, null, null, null, null, null, null, C)
+        parseClass(C, class, class, C)
+          parseClassHeaderOpt(C, class, class)
+            parseClassExtendsOpt(C)
+              listener: handleNoType(C)
+              listener: handleClassExtends(null, 1)
+            parseClassWithClauseOpt(C)
+              listener: handleClassNoWithClause()
+            parseClassOrMixinOrEnumImplementsOpt(C)
+              listener: handleImplements(null, 0)
+            listener: handleClassHeader(class, class, null)
+          parseClassOrMixinOrExtensionBody(C, DeclarationKind.Class, C)
+            listener: beginClassOrMixinOrExtensionBody(DeclarationKind.Class, {)
+            notEofOrValue(}, var)
+            parseClassOrMixinOrExtensionOrEnumMemberImpl({, DeclarationKind.Class, C)
+              parseMetadataStar({)
+                listener: beginMetadataStar(var)
+                listener: endMetadataStar(0)
+              listener: beginMember()
+              skipOuterPattern(var)
+              reportRecoverableErrorWithEnd((, ), PatternVariableDeclarationOutsideFunctionOrMethod)
+                listener: handleRecoverableError(PatternVariableDeclarationOutsideFunctionOrMethod, (, ))
+              rewriter()
+              rewriter()
+              parseFields({, null, null, null, null, null, null, var, var, Instance of 'NoType', , DeclarationKind.Class, C, true)
+                listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, var, {)
+                listener: handleNoType(var)
+                ensureIdentifierPotentiallyRecovered(var, fieldDeclaration, true)
+                  listener: handleIdentifier(, fieldDeclaration)
+                parseFieldInitializerOpt(, , null, null, null, null, var, DeclarationKind.Class, C)
+                  listener: beginFieldInitializer(=)
+                  parseExpression(=)
+                    looksLikeOuterPatternEquals(=)
+                      skipOuterPattern(=)
+                    parsePrecedenceExpression(=, 1, true, ConstantPatternContext.none)
+                      parseUnaryExpression(=, true, ConstantPatternContext.none)
+                        parsePrimary(=, expression, ConstantPatternContext.none)
+                          parseParenthesizedExpressionFunctionLiteralOrRecordLiteral(=, ConstantPatternContext.none)
+                            parseParenthesizedExpressionOrRecordLiteral(=, null, ConstantPatternContext.none)
+                              listener: beginParenthesizedExpressionOrRecordLiteral(()
+                              parseExpression(()
+                                looksLikeOuterPatternEquals(()
+                                  skipOuterPattern(()
+                                parsePrecedenceExpression((, 1, true, ConstantPatternContext.none)
+                                  parseUnaryExpression((, true, ConstantPatternContext.none)
+                                    parsePrimary((, expression, ConstantPatternContext.none)
+                                      parseLiteralInt(()
+                                        listener: handleLiteralInt(0)
+                              parseExpression(,)
+                                looksLikeOuterPatternEquals(,)
+                                  skipOuterPattern(,)
+                                parsePrecedenceExpression(,, 1, true, ConstantPatternContext.none)
+                                  parseUnaryExpression(,, true, ConstantPatternContext.none)
+                                    parsePrimary(,, expression, ConstantPatternContext.none)
+                                      parseLiteralInt(,)
+                                        listener: handleLiteralInt(1)
+                              ensureCloseParen(1, ()
+                              listener: endRecordLiteral((, 2, null)
+                  listener: endFieldInitializer(=, ;)
+                listener: endClassFields(null, null, null, null, null, null, var, 1, var, ;)
+              listener: endMember()
+            notEofOrValue(}, })
+            listener: endClassOrMixinOrExtensionBody(DeclarationKind.Class, 1, {, })
+          listener: endClassDeclaration(class, })
+  listener: endTopLevelDeclaration()
+  reportAllErrorTokens(class)
+  listener: endCompilationUnit(1, )

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_inClass.dart.parser.expect

@@ -0,0 +1,11 @@
+NOTICE: Stream was rewritten by parser!
+
+class C {
+var *synthetic* = (0, 1);
+}
+
+
+class[KeywordToken] C[StringToken] {[BeginToken]
+var[KeywordToken] [SyntheticStringToken] =[SimpleToken] ([BeginToken]0[StringToken],[SimpleToken] 1[StringToken])[SimpleToken];[SimpleToken]
+}[SimpleToken]
+[SimpleToken]

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_inClass.dart.scanner.expect

@@ -0,0 +1,9 @@
+class C {
+var (a, b) = (0, 1);
+}
+
+
+class[KeywordToken] C[StringToken] {[BeginToken]
+var[KeywordToken] ([BeginToken]a[StringToken],[SimpleToken] b[StringToken])[SimpleToken] =[SimpleToken] ([BeginToken]0[StringToken],[SimpleToken] 1[StringToken])[SimpleToken];[SimpleToken]
+}[SimpleToken]
+[SimpleToken]

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_topLevel.dart

@@ -0,0 +1 @@
+var (a, b) = (0, 1);

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_topLevel.dart.expect

@@ -0,0 +1,23 @@
+Problems reported:
+
+parser/patterns/patternVariableDeclaration_topLevel:1:5: A pattern variable declaration may not appear outside a function or method.
+var (a, b) = (0, 1);
+    ^^^^^^
+
+beginCompilationUnit(var)
+  beginMetadataStar(var)
+  endMetadataStar(0)
+  beginTopLevelMember(var)
+    handleRecoverableError(PatternVariableDeclarationOutsideFunctionOrMethod, (, ))
+    beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, )
+      handleNoType(var)
+      handleIdentifier(, topLevelVariableDeclaration)
+      beginFieldInitializer(=)
+        beginParenthesizedExpressionOrRecordLiteral(()
+          handleLiteralInt(0)
+          handleLiteralInt(1)
+        endRecordLiteral((, 2, null)
+      endFieldInitializer(=, ;)
+    endTopLevelFields(null, null, null, null, var, 1, var, ;)
+  endTopLevelDeclaration()
+endCompilationUnit(1, )

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_topLevel.dart.intertwined.expect

@@ -0,0 +1,54 @@
+parseUnit(var)
+  skipErrorTokens(var)
+  listener: beginCompilationUnit(var)
+  syntheticPreviousToken(var)
+  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
+    parseMetadataStar()
+      listener: beginMetadataStar(var)
+      listener: endMetadataStar(0)
+    parseTopLevelMemberImpl()
+      listener: beginTopLevelMember(var)
+      skipOuterPattern(var)
+      reportRecoverableErrorWithEnd((, ), PatternVariableDeclarationOutsideFunctionOrMethod)
+        listener: handleRecoverableError(PatternVariableDeclarationOutsideFunctionOrMethod, (, ))
+      rewriter()
+      rewriter()
+      parseFields(, null, null, null, null, null, null, var, var, Instance of 'NoType', , DeclarationKind.TopLevel, null, true)
+        listener: beginFields(DeclarationKind.TopLevel, null, null, null, null, null, null, var, )
+        listener: handleNoType(var)
+        ensureIdentifierPotentiallyRecovered(var, topLevelVariableDeclaration, true)
+          listener: handleIdentifier(, topLevelVariableDeclaration)
+        parseFieldInitializerOpt(, , null, null, null, null, var, DeclarationKind.TopLevel, null)
+          listener: beginFieldInitializer(=)
+          parseExpression(=)
+            looksLikeOuterPatternEquals(=)
+              skipOuterPattern(=)
+            parsePrecedenceExpression(=, 1, true, ConstantPatternContext.none)
+              parseUnaryExpression(=, true, ConstantPatternContext.none)
+                parsePrimary(=, expression, ConstantPatternContext.none)
+                  parseParenthesizedExpressionFunctionLiteralOrRecordLiteral(=, ConstantPatternContext.none)
+                    parseParenthesizedExpressionOrRecordLiteral(=, null, ConstantPatternContext.none)
+                      listener: beginParenthesizedExpressionOrRecordLiteral(()
+                      parseExpression(()
+                        looksLikeOuterPatternEquals(()
+                          skipOuterPattern(()
+                        parsePrecedenceExpression((, 1, true, ConstantPatternContext.none)
+                          parseUnaryExpression((, true, ConstantPatternContext.none)
+                            parsePrimary((, expression, ConstantPatternContext.none)
+                              parseLiteralInt(()
+                                listener: handleLiteralInt(0)
+                      parseExpression(,)
+                        looksLikeOuterPatternEquals(,)
+                          skipOuterPattern(,)
+                        parsePrecedenceExpression(,, 1, true, ConstantPatternContext.none)
+                          parseUnaryExpression(,, true, ConstantPatternContext.none)
+                            parsePrimary(,, expression, ConstantPatternContext.none)
+                              parseLiteralInt(,)
+                                listener: handleLiteralInt(1)
+                      ensureCloseParen(1, ()
+                      listener: endRecordLiteral((, 2, null)
+          listener: endFieldInitializer(=, ;)
+        listener: endTopLevelFields(null, null, null, null, var, 1, var, ;)
+  listener: endTopLevelDeclaration()
+  reportAllErrorTokens(var)
+  listener: endCompilationUnit(1, )

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_topLevel.dart.parser.expect

@@ -0,0 +1,7 @@
+NOTICE: Stream was rewritten by parser!
+
+var *synthetic* = (0, 1);
+
+
+var[KeywordToken] [SyntheticStringToken] =[SimpleToken] ([BeginToken]0[StringToken],[SimpleToken] 1[StringToken])[SimpleToken];[SimpleToken]
+[SimpleToken]

pkg/front_end/parser_testcases/patterns/patternVariableDeclaration_topLevel.dart.scanner.expect

@@ -0,0 +1,5 @@
+var (a, b) = (0, 1);
+
+
+var[KeywordToken] ([BeginToken]a[StringToken],[SimpleToken] b[StringToken])[SimpleToken] =[SimpleToken] ([BeginToken]0[StringToken],[SimpleToken] 1[StringToken])[SimpleToken];[SimpleToken]
+[SimpleToken]

pkg/front_end/parser_testcases/record/record_type_with_modifiers.dart.intertwined.expect

@@ -31,6 +31,7 @@ parseUnit(class)
                 listener: beginMetadataStar(final)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
               parseFields({, null, null, null, null, null, null, final, final, Instance of 'ComplexTypeInfo', x, DeclarationKind.Class, Foo, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, null, final, {)
                 parseRecordType((, final, false)
@@ -153,6 +154,7 @@ parseUnit(class)
                 listener: beginMetadataStar(static)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
               parseFields(;, null, null, null, static, null, null, final, final, Instance of 'ComplexTypeInfo', z, DeclarationKind.Class, Foo, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, final, ;)
                 parseRecordType((, final, false)
@@ -214,6 +216,7 @@ parseUnit(class)
                 listener: beginMetadataStar(static)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(const)
               parseFields(;, null, null, null, static, null, null, const, const, Instance of 'ComplexTypeInfo', b, DeclarationKind.Class, Foo, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, static, null, null, const, ;)
                 parseRecordType((, const, false)
@@ -314,6 +317,7 @@ parseUnit(class)
                 listener: beginMetadataStar(late)
                 listener: endMetadataStar(0)
               listener: beginMember()
+              skipOuterPattern(final)
               parseFields(;, null, null, null, null, null, late, final, final, Instance of 'ComplexTypeInfo', d, DeclarationKind.Class, Foo, false)
                 listener: beginFields(DeclarationKind.Class, null, null, null, null, null, late, final, ;)
                 parseRecordType((, final, false)