Generalize the first argument in an assert to be an expression (issue 26865)

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

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.src.generated.error;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart' show AstNode;
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 2876 matching lines @@
     //
     // parser.dart:
     //
     ParserErrorCode.ABSTRACT_CLASS_MEMBER,
     ParserErrorCode.ABSTRACT_ENUM,
     ParserErrorCode.ABSTRACT_STATIC_METHOD,
     ParserErrorCode.ABSTRACT_TOP_LEVEL_FUNCTION,
     ParserErrorCode.ABSTRACT_TOP_LEVEL_VARIABLE,
     ParserErrorCode.ABSTRACT_TYPEDEF,
     ParserErrorCode.ANNOTATION_ON_ENUM_CONSTANT,
-    ParserErrorCode.ASSERT_DOES_NOT_TAKE_ASSIGNMENT,
-    ParserErrorCode.ASSERT_DOES_NOT_TAKE_CASCADE,
-    ParserErrorCode.ASSERT_DOES_NOT_TAKE_THROW,
-    ParserErrorCode.ASSERT_DOES_NOT_TAKE_RETHROW,
     ParserErrorCode.ASYNC_KEYWORD_USED_AS_IDENTIFIER,
     ParserErrorCode.ASYNC_NOT_SUPPORTED,
     ParserErrorCode.BREAK_OUTSIDE_OF_LOOP,
     ParserErrorCode.CLASS_IN_CLASS,
     ParserErrorCode.COLON_IN_PLACE_OF_IN,
     ParserErrorCode.CONST_AND_FINAL,
     ParserErrorCode.CONST_AND_VAR,
     ParserErrorCode.CONST_CLASS,
     ParserErrorCode.CONST_CONSTRUCTOR_WITH_BODY,
     ParserErrorCode.CONST_ENUM,
@@ skipping 3179 matching lines @@
    * Initialize a newly created error code to have the given [name].
    */
   const TodoCode(String name) : super(name, "{0}");
 
   @override
   ErrorSeverity get errorSeverity => ErrorSeverity.INFO;
 
   @override
   ErrorType get type => ErrorType.TODO;
 }