Class fields, part 3 (backends)

test/cctest/interpreter/test-bytecode-generator.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <fstream>
 
 #include "src/v8.h"
 
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-generator.h"
@@ skipping 2149 matching lines @@
       "    constructor() { super(); this.y_ = 2; }\n"
       "  }\n"
       "  test = new B().constructor;\n"
       "})();\n",
   };
 
   CHECK(CompareTexts(BuildActual(printer, snippets),
                      LoadGolden("ClassAndSuperClass.golden")));
 }
 
+TEST(ClassFields) {
+  bool old_flag = FLAG_harmony_class_fields;
+  FLAG_harmony_class_fields = true;
+
+  InitializedIgnitionHandleScope scope;
+  BytecodeExpectationsPrinter printer(CcTest::isolate());
+  const char* snippets[] = {
+      "return new class {\n"
+      "  'a' = 0;\n"
+      "  ['b'+'c'] = 1;\n"
+      "  static d = 2;\n"
+      "}\n",
+
+      "return new class extends class {} {\n"
+      "  constructor(){ super() }\n"
+      "  'a' = 0;\n"
+      "  ['b'+'c'] = 1;\n"
+      "  static d = 2;\n"
+      "}\n",
+  };
+
+  CHECK(CompareTexts(BuildActual(printer, snippets),
+                     LoadGolden("ClassFields.golden")));
+
+  FLAG_harmony_class_fields = old_flag;
+}
+
 TEST(Generators) {
   InitializedIgnitionHandleScope scope;
   BytecodeExpectationsPrinter printer(CcTest::isolate());
   printer.set_wrap(false);
   printer.set_test_function_name("f");
 
   const char* snippets[] = {
       "function* f() { }\n"
       "f();\n",
 
       "function* f() { yield 42 }\n"
       "f();\n",
 
       "function* f() { for (let x of [42]) yield x }\n"
       "f();\n",
   };
 
   CHECK(CompareTexts(BuildActual(printer, snippets),
                      LoadGolden("Generators.golden")));
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8