Enable ES6 generators

src/parser.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/v8.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
@@ skipping 737 matching lines @@
       pending_error_message_(NULL),
       pending_error_arg_(NULL),
       pending_error_char_arg_(NULL),
       total_preparse_skipped_(0),
       pre_parse_timer_(NULL) {
   DCHECK(!script().is_null() || info->source_stream() != NULL);
   set_allow_harmony_scoping(!info->is_native() && FLAG_harmony_scoping);
   set_allow_modules(!info->is_native() && FLAG_harmony_modules);
   set_allow_natives_syntax(FLAG_allow_natives_syntax || info->is_native());
   set_allow_lazy(false);  // Must be explicitly enabled.
-  set_allow_generators(FLAG_harmony_generators);
   set_allow_arrow_functions(FLAG_harmony_arrow_functions);
   set_allow_harmony_numeric_literals(FLAG_harmony_numeric_literals);
   set_allow_classes(FLAG_harmony_classes);
   set_allow_harmony_object_literals(FLAG_harmony_object_literals);
   for (int feature = 0; feature < v8::Isolate::kUseCounterFeatureCount;
        ++feature) {
     use_counts_[feature] = 0;
   }
   if (info->ast_value_factory() == NULL) {
     // info takes ownership of AstValueFactory.
@@ skipping 1117 matching lines @@
 
 Statement* Parser::ParseFunctionDeclaration(
     ZoneList<const AstRawString*>* names, bool* ok) {
   // FunctionDeclaration ::
   //   'function' Identifier '(' FormalParameterListopt ')' '{' FunctionBody '}'
   // GeneratorDeclaration ::
   //   'function' '*' Identifier '(' FormalParameterListopt ')'
   //      '{' FunctionBody '}'
   Expect(Token::FUNCTION, CHECK_OK);
   int pos = position();
-  bool is_generator = allow_generators() && Check(Token::MUL);
+  bool is_generator = Check(Token::MUL);
   bool is_strict_reserved = false;
   const AstRawString* name = ParseIdentifierOrStrictReservedWord(
       &is_strict_reserved, CHECK_OK);
   FunctionLiteral* fun =
       ParseFunctionLiteral(name, scanner()->location(), is_strict_reserved,
                            is_generator ? FunctionKind::kGeneratorFunction
                                         : FunctionKind::kNormalFunction,
                            pos, FunctionLiteral::DECLARATION,
                            FunctionLiteral::NORMAL_ARITY, CHECK_OK);
   // Even if we're not at the top-level of the global or a function
@@ skipping 1853 matching lines @@
     pre_parse_timer_->Start();
   }
   DCHECK_EQ(Token::LBRACE, scanner()->current_token());
 
   if (reusable_preparser_ == NULL) {
     reusable_preparser_ = new PreParser(&scanner_, NULL, stack_limit_);
     reusable_preparser_->set_allow_harmony_scoping(allow_harmony_scoping());
     reusable_preparser_->set_allow_modules(allow_modules());
     reusable_preparser_->set_allow_natives_syntax(allow_natives_syntax());
     reusable_preparser_->set_allow_lazy(true);
-    reusable_preparser_->set_allow_generators(allow_generators());
     reusable_preparser_->set_allow_arrow_functions(allow_arrow_functions());
     reusable_preparser_->set_allow_harmony_numeric_literals(
         allow_harmony_numeric_literals());
     reusable_preparser_->set_allow_classes(allow_classes());
     reusable_preparser_->set_allow_harmony_object_literals(
         allow_harmony_object_literals());
   }
   PreParser::PreParseResult result =
       reusable_preparser_->PreParseLazyFunction(strict_mode(),
                                                 is_generator(),
@@ skipping 1104 matching lines @@
 
   // We cannot internalize on a background thread; a foreground task will take
   // care of calling Parser::Internalize just before compilation.
 
   if (compile_options() == ScriptCompiler::kProduceParserCache) {
     if (result != NULL) *info_->cached_data() = recorder.GetScriptData();
     log_ = NULL;
   }
 }
 } }  // namespace v8::internal