[builtins] Move the Boolean constructor to C++.

src/builtins.cc

 // Copyright 2012 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/builtins.h"
 
 #include "src/api.h"
 #include "src/api-natives.h"
 #include "src/arguments.h"
 #include "src/base/once.h"
@@ skipping 2299 matching lines @@
   }
 
   Maybe<bool> result = JSReceiver::SetPrototype(
       Handle<JSReceiver>::cast(target), proto, true, Object::DONT_THROW);
   MAYBE_RETURN(result, isolate->heap()->exception());
   return *isolate->factory()->ToBoolean(result.FromJust());
 }
 
 
 // -----------------------------------------------------------------------------
+// ES6 section 19.3 Boolean Objects
+
+
+// ES6 section 19.3.1.1 Boolean ( value ) for the [[Call]] case.
+BUILTIN(BooleanConstructor) {
+  HandleScope scope(isolate);
+  Handle<Object> value = args.atOrUndefined(isolate, 1);
+  return isolate->heap()->ToBoolean(value->BooleanValue());
+}
+
+
+// ES6 section 19.3.1.1 Boolean ( value ) for the [[Construct]] case.
+BUILTIN(BooleanConstructor_ConstructStub) {
+  HandleScope scope(isolate);
+  Handle<Object> value = args.atOrUndefined(isolate, 1);
+  Handle<JSFunction> target = args.target<JSFunction>();
+  Handle<JSReceiver> new_target = Handle<JSReceiver>::cast(args.new_target());
+  DCHECK(*target == target->native_context()->boolean_function());
+  Handle<Map> initial_map;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, initial_map,
+      JSFunction::GetDerivedMap(isolate, target, new_target));
+  Handle<JSValue> result = Handle<JSValue>::cast(
+      isolate->factory()->NewJSObjectFromMap(initial_map));
+  result->set_value(isolate->heap()->ToBoolean(value->BooleanValue()));
+  return *result;
+}
+
+
+// -----------------------------------------------------------------------------
 // ES6 section 20.3 Date Objects
 
 
 namespace {
 
 // ES6 section 20.3.1.1 Time Values and Time Range
 const double kMinYear = -1000000.0;
 const double kMaxYear = -kMinYear;
 const double kMinMonth = -10000000.0;
 const double kMaxMonth = -kMinMonth;
@@ skipping 2058 matching lines @@
 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C)
 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 
 
 }  // namespace internal
 }  // namespace v8