Resynthesize binary, prefix, and conditional expressions from Kernel.

pkg/analyzer/test/src/summary/resynthesize_common.dart

 // Copyright (c) 2015, 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 test.src.serialization.elements_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 4635 matching lines @@
   }
 
   test_const_topLevel_prefix() async {
     var library = await checkLibrary(r'''
 const vNotEqual = 1 != 2;
 const vNot = !true;
 const vNegate = -1;
 const vComplement = ~1;
 ''');
     if (isStrongMode) {
-      checkElementText(library, r'''
+      if (isSharedFrontEnd) {
+        checkElementText(library, r'''
+const bool vNotEqual = !1 == 2;

[Paul Berry, 2017/07/19 17:43:31]

There's a precedence error here.  It should be:

const bool vNotEqual = !(1 == 2);

Can we change _ElementWriter.writeExpression() to account for precedence and
insert parentheses when appropriate?

Alternatively, we could just make _ElementWriter.writeExpression() parenthesize
all subexpressions, since it's just used for test expectations and isn't user
facing.

[scheglov, 2017/07/19 19:35:15]

Done.

+const bool vNot = !true;
+const int vNegate = -1;
+const int vComplement = ~1;
+''');
+      } else {
+        checkElementText(library, r'''
 const bool vNotEqual = 1 != 2;
 const bool vNot = !true;
 const int vNegate = -1;
 const int vComplement = ~1;
 ''');
+      }
     } else {
       checkElementText(library, r'''
 const dynamic vNotEqual = 1 != 2;
 const dynamic vNot = !true;
 const dynamic vNegate = -1;
 const dynamic vComplement = ~1;
 ''');
     }
   }
 
@@ skipping 8473 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }