Implement flag and source getters on RegExp.prototype.

src/bootstrapper.cc

 // Copyright 2014 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 "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 1226 matching lines @@
     DCHECK(regexp_fun->has_initial_map());
     Handle<Map> initial_map(regexp_fun->initial_map());
 
     DCHECK_EQ(0, initial_map->GetInObjectProperties());
 
     PropertyAttributes final =
         static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
     Map::EnsureDescriptorSlack(initial_map, 5);
 
     {
-      // ECMA-262, section 15.10.7.1.
-      DataDescriptor field(factory->source_string(),
+      // ES6 21.2.3.2.1
+      DataDescriptor field(factory->regexp_source_symbol(),
                            JSRegExp::kSourceFieldIndex, final,
                            Representation::Tagged());
       initial_map->AppendDescriptor(&field);
     }
     {
-      // ECMA-262, section 15.10.7.2.
-      DataDescriptor field(factory->global_string(),
-                           JSRegExp::kGlobalFieldIndex, final,
-                           Representation::Tagged());
+      DataDescriptor field(factory->regexp_flags_symbol(),
+                           JSRegExp::kFlagsFieldIndex, final,
+                           Representation::Smi());
       initial_map->AppendDescriptor(&field);
     }
     {
-      // ECMA-262, section 15.10.7.3.
-      DataDescriptor field(factory->ignore_case_string(),
-                           JSRegExp::kIgnoreCaseFieldIndex, final,
-                           Representation::Tagged());
-      initial_map->AppendDescriptor(&field);
-    }
-    {
-      // ECMA-262, section 15.10.7.4.
-      DataDescriptor field(factory->multiline_string(),
-                           JSRegExp::kMultilineFieldIndex, final,
-                           Representation::Tagged());
-      initial_map->AppendDescriptor(&field);
-    }
-    {
       // ECMA-262, section 15.10.7.5.
       PropertyAttributes writable =
           static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
       DataDescriptor field(factory->last_index_string(),
                            JSRegExp::kLastIndexFieldIndex, writable,
                            Representation::Tagged());
       initial_map->AppendDescriptor(&field);
     }
 
     static const int num_fields = JSRegExp::kInObjectFieldCount;
@@ skipping 2019 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8