WIP [esnext] implement async iteration proposal

src/ast/ast-types.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 <iomanip>
 
 #include "src/ast/ast-types.h"
 
 #include "src/handles-inl.h"
 #include "src/objects-inl.h"
@@ skipping 191 matching lines @@
     case JS_GLOBAL_PROXY_TYPE:
     case JS_API_OBJECT_TYPE:
     case JS_SPECIAL_API_OBJECT_TYPE:
       if (map->is_undetectable()) return kOtherUndetectable;
       return kOtherObject;
     case JS_VALUE_TYPE:
     case JS_MESSAGE_OBJECT_TYPE:
     case JS_DATE_TYPE:
     case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
     case JS_GENERATOR_OBJECT_TYPE:
+    case JS_ASYNC_GENERATOR_OBJECT_TYPE:
+    case JS_ASYNC_FROM_SYNC_ITERATOR_TYPE:
     case JS_MODULE_NAMESPACE_TYPE:
     case JS_ARRAY_BUFFER_TYPE:
     case JS_ARRAY_TYPE:
     case JS_REGEXP_TYPE:  // TODO(rossberg): there should be a RegExp type.
     case JS_TYPED_ARRAY_TYPE:
     case JS_DATA_VIEW_TYPE:
     case JS_SET_TYPE:
     case JS_MAP_TYPE:
     case JS_SET_ITERATOR_TYPE:
     case JS_MAP_ITERATOR_TYPE:
@@ skipping 57 matching lines @@
     case FIXED_DOUBLE_ARRAY_TYPE:
     case BYTE_ARRAY_TYPE:
     case BYTECODE_ARRAY_TYPE:
     case TRANSITION_ARRAY_TYPE:
     case FOREIGN_TYPE:
     case SCRIPT_TYPE:
     case CODE_TYPE:
     case PROPERTY_CELL_TYPE:
     case MODULE_TYPE:
     case MODULE_INFO_ENTRY_TYPE:
+    case ASYNC_GENERATOR_REQUEST_TYPE:
       return kOtherInternal & kTaggedPointer;
 
     // Remaining instance types are unsupported for now. If any of them do
     // require bit set types, they should get kOtherInternal & kTaggedPointer.
     case MUTABLE_HEAP_NUMBER_TYPE:
     case FREE_SPACE_TYPE:
 #define FIXED_TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
   case FIXED_##TYPE##_ARRAY_TYPE:
 
       TYPED_ARRAYS(FIXED_TYPED_ARRAY_CASE)
@@ skipping 1005 matching lines @@
 #undef CONSTRUCT_SIMD_TYPE
 
 // -----------------------------------------------------------------------------
 // Instantiations.
 
 template class AstType::Iterator<i::Map>;
 template class AstType::Iterator<i::Object>;
 
 }  // namespace internal
 }  // namespace v8