Revert of Revert of [es6] Parsing of new.target

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 75bfbe25ab84611b2a14a95be4f098cd17073728..fc73a3e3a97c3a38aa6b43fd98b754cb93b732b2 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -756,6 +756,7 @@
                               Variable::THIS, pos, pos + 4);
 }
 
+
 Expression* ParserTraits::SuperPropertyReference(Scope* scope,
                                                  AstNodeFactory* factory,
                                                  int pos) {
@@ -783,6 +784,16 @@
   return factory->NewSuperCallReference(
       ThisExpression(scope, factory, pos)->AsVariableProxy(), new_target_proxy,
       this_function_proxy, pos);
+}
+
+
+Expression* ParserTraits::NewTargetExpression(Scope* scope,
+                                              AstNodeFactory* factory,
+                                              int pos) {
+  static const int kNewTargetStringLength = 10;
+  return scope->NewUnresolved(
+      factory, parser_->ast_value_factory()->new_target_string(),
+      Variable::NORMAL, pos, pos + kNewTargetStringLength);
 }
 
 
@@ -910,6 +921,7 @@
   set_allow_harmony_spreadcalls(FLAG_harmony_spreadcalls);
   set_allow_harmony_destructuring(FLAG_harmony_destructuring);
   set_allow_harmony_spread_arrays(FLAG_harmony_spread_arrays);
+  set_allow_harmony_new_target(FLAG_harmony_new_target);
   set_allow_strong_mode(FLAG_strong_mode);
   for (int feature = 0; feature < v8::Isolate::kUseCounterFeatureCount;
        ++feature) {
@@ -4286,26 +4298,22 @@
     reusable_preparser_ = new PreParser(zone(), &scanner_, ast_value_factory(),
                                         NULL, stack_limit_);
     reusable_preparser_->set_allow_lazy(true);
-    reusable_preparser_->set_allow_natives(allow_natives());
-    reusable_preparser_->set_allow_harmony_modules(allow_harmony_modules());
-    reusable_preparser_->set_allow_harmony_arrow_functions(
-        allow_harmony_arrow_functions());
-    reusable_preparser_->set_allow_harmony_classes(allow_harmony_classes());
-    reusable_preparser_->set_allow_harmony_object_literals(
-        allow_harmony_object_literals());
-    reusable_preparser_->set_allow_harmony_sloppy(allow_harmony_sloppy());
-    reusable_preparser_->set_allow_harmony_unicode(allow_harmony_unicode());
-    reusable_preparser_->set_allow_harmony_computed_property_names(
-        allow_harmony_computed_property_names());
-    reusable_preparser_->set_allow_harmony_rest_params(
-        allow_harmony_rest_params());
-    reusable_preparser_->set_allow_harmony_spreadcalls(
-        allow_harmony_spreadcalls());
-    reusable_preparser_->set_allow_harmony_destructuring(
-        allow_harmony_destructuring());
-    reusable_preparser_->set_allow_harmony_spread_arrays(
-        allow_harmony_spread_arrays());
-    reusable_preparser_->set_allow_strong_mode(allow_strong_mode());
+#define SET_ALLOW(name) reusable_preparser_->set_allow_##name(allow_##name());
+    SET_ALLOW(natives);
+    SET_ALLOW(harmony_modules);
+    SET_ALLOW(harmony_arrow_functions);
+    SET_ALLOW(harmony_classes);
+    SET_ALLOW(harmony_object_literals);
+    SET_ALLOW(harmony_sloppy);
+    SET_ALLOW(harmony_unicode);
+    SET_ALLOW(harmony_computed_property_names);
+    SET_ALLOW(harmony_rest_params);
+    SET_ALLOW(harmony_spreadcalls);
+    SET_ALLOW(harmony_destructuring);
+    SET_ALLOW(harmony_spread_arrays);
+    SET_ALLOW(harmony_new_target);
+    SET_ALLOW(strong_mode);
+#undef SET_ALLOW
   }
   PreParser::PreParseResult result = reusable_preparser_->PreParseLazyFunction(
       language_mode(), function_state_->kind(), logger, bookmark);