fixes #25407, generic list and map literal type comments

pkg/analyzer/test/generated/parser_test.dart

Index: pkg/analyzer/test/generated/parser_test.dart
diff --git a/pkg/analyzer/test/generated/parser_test.dart b/pkg/analyzer/test/generated/parser_test.dart
index 5d304c70e61c4ea5fda64245c93b2b921b85c821..097980a8630f7049abc74c439d558b84f482e51a 100644
--- a/pkg/analyzer/test/generated/parser_test.dart
+++ b/pkg/analyzer/test/generated/parser_test.dart
@@ -7334,6 +7334,16 @@ void''');
     expect(literal.rightBracket, isNotNull);
   }
 
+  void test_parseConstExpression_listLiteral_typed_genericComment() {
+    enableGenericMethodComments = true;
+    ListLiteral literal = parse4("parseConstExpression", "const /*<A>*/ []");
+    expect(literal.constKeyword, isNotNull);
+    expect(literal.typeArguments, isNotNull);
+    expect(literal.leftBracket, isNotNull);
+    expect(literal.elements, hasLength(0));
+    expect(literal.rightBracket, isNotNull);
+  }
+
   void test_parseConstExpression_listLiteral_untyped() {
     ListLiteral literal = parse4("parseConstExpression", "const []");
     expect(literal.constKeyword, isNotNull);
@@ -7351,6 +7361,15 @@ void''');
     expect(literal.typeArguments, isNotNull);
   }
 
+  void test_parseConstExpression_mapLiteral_typed_genericComment() {
+    enableGenericMethodComments = true;
+    MapLiteral literal = parse4("parseConstExpression", "const /*<A, B>*/ {}");
+    expect(literal.leftBracket, isNotNull);
+    expect(literal.entries, hasLength(0));
+    expect(literal.rightBracket, isNotNull);
+    expect(literal.typeArguments, isNotNull);
+  }
+
   void test_parseConstExpression_mapLiteral_untyped() {
     MapLiteral literal = parse4("parseConstExpression", "const {}");
     expect(literal.leftBracket, isNotNull);
@@ -9856,6 +9875,13 @@ void''');
     expect(literal.typeArguments.arguments, hasLength(1));
   }
 
+  void test_parsePrimaryExpression_listLiteral_typed_genericComment() {
+    enableGenericMethodComments = true;
+    ListLiteral literal = parse4("parsePrimaryExpression", "/*<A>*/[ ]");
+    expect(literal.typeArguments, isNotNull);
+    expect(literal.typeArguments.arguments, hasLength(1));
+  }
+
   void test_parsePrimaryExpression_mapLiteral() {
     MapLiteral literal = parse4("parsePrimaryExpression", "{}");
     expect(literal, isNotNull);
@@ -9867,6 +9893,13 @@ void''');
     expect(literal.typeArguments.arguments, hasLength(2));
   }
 
+  void test_parsePrimaryExpression_mapLiteral_typed_genericComment() {
+    enableGenericMethodComments = true;
+    MapLiteral literal = parse4("parsePrimaryExpression", "/*<A, B>*/{}");
+    expect(literal.typeArguments, isNotNull);
+    expect(literal.typeArguments.arguments, hasLength(2));
+  }
+
   void test_parsePrimaryExpression_new() {
     InstanceCreationExpression expression =
         parse4("parsePrimaryExpression", "new A()");