[async-iteration] add support for for-await-of loops in Async Functions

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index 0ae8fb9cd100270fb29be1e1287c15b927420f40..fa92590e7edd19681bd42f81d5f41e98ced3ee98 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -457,16 +457,17 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
   // !%_IsJSReceiver(result = iterator.next()) &&
   //     %ThrowIteratorResultNotAnObject(result)

[neis, 2017/01/24 12:49:19]

Comment needs an update.

[caitp, 2017/01/24 22:51:55]

done

   Expression* BuildIteratorNextResult(Expression* iterator, Variable* result,
-                                      int pos);
+                                      IteratorType type, int pos);
 
   // Initialize the components of a for-in / for-of statement.
   Statement* InitializeForEachStatement(ForEachStatement* stmt,
                                         Expression* each, Expression* subject,
                                         Statement* body, int each_keyword_pos);
-  Statement* InitializeForOfStatement(ForOfStatement* stmt, Expression* each,
+  Statement* InitializeForOfStatement(ForEachStatement* stmt, Expression* each,
                                       Expression* iterable, Statement* body,
-                                      bool finalize,
+                                      bool finalize, IteratorType type,
                                       int next_result_pos = kNoSourcePosition);
+
   Block* RewriteForVarInLegacy(const ForInfo& for_info);
   void DesugarBindingInForEachStatement(ForInfo* for_info, Block** body_block,
                                         Expression** each_variable, bool* ok);
@@ -638,16 +639,18 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
 
   void FinalizeIteratorUse(Scope* use_scope, Variable* completion,
                            Expression* condition, Variable* iter,
-                           Block* iterator_use, Block* result);
+                           Block* iterator_use, Block* result,
+                           IteratorType type);
 
   Statement* FinalizeForOfStatement(ForOfStatement* loop, Variable* completion,
-                                    int pos);
+                                    IteratorType type, int pos);
   void BuildIteratorClose(ZoneList<Statement*>* statements, Variable* iterator,
                           Variable* input, Variable* output);
   void BuildIteratorCloseForCompletion(Scope* scope,
                                        ZoneList<Statement*>* statements,
                                        Variable* iterator,
-                                       Expression* completion);
+                                       Expression* completion,
+                                       IteratorType type);
   Statement* CheckCallable(Variable* var, Expression* error, int pos);
 
   V8_INLINE Expression* RewriteAwaitExpression(Expression* value, int pos);