[async-iteration] implement Async-from-Sync Iterator

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 202 matching lines @@
     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:
     case JS_STRING_ITERATOR_TYPE:
+    case JS_ASYNC_FROM_SYNC_ITERATOR_TYPE:
 
     case JS_TYPED_ARRAY_KEY_ITERATOR_TYPE:
     case JS_FAST_ARRAY_KEY_ITERATOR_TYPE:
     case JS_GENERIC_ARRAY_KEY_ITERATOR_TYPE:
     case JS_UINT8_ARRAY_KEY_VALUE_ITERATOR_TYPE:
     case JS_INT8_ARRAY_KEY_VALUE_ITERATOR_TYPE:
     case JS_UINT16_ARRAY_KEY_VALUE_ITERATOR_TYPE:
     case JS_INT16_ARRAY_KEY_VALUE_ITERATOR_TYPE:
     case JS_UINT32_ARRAY_KEY_VALUE_ITERATOR_TYPE:
     case JS_INT32_ARRAY_KEY_VALUE_ITERATOR_TYPE:
@@ skipping 1063 matching lines @@
 }
 
 // -----------------------------------------------------------------------------
 // Instantiations.
 
 template class AstType::Iterator<i::Map>;
 template class AstType::Iterator<i::Object>;
 
 }  // namespace internal
 }  // namespace v8