[async-functions] support await expressions in finally statements

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/parsing/preparser.h b/src/parsing/preparser.h
index f118139706da1c3d05379521a2e723495ff21435..293db7456884e6d55aa3bc40c5453de00c2601c8 100644
--- a/src/parsing/preparser.h
+++ b/src/parsing/preparser.h
@@ -123,7 +123,7 @@ class PreParserIdentifier {
   friend class PreParserFactory;
 };
 
-
+class PreParserStatement;
 class PreParserExpression {
  public:
   PreParserExpression()
@@ -337,6 +337,7 @@ class PreParserExpression {
 
   int position() const { return kNoSourcePosition; }
   void set_function_token_position(int position) {}
+  void set_parameter_init_block(PreParserStatement block);
 
  private:
   enum Type {
@@ -534,6 +535,8 @@ class PreParserStatement {
   Type code_;
 };
 
+V8_INLINE void PreParserExpression::set_parameter_init_block(
+    PreParserStatement block) {}
 
 class PreParserFactory {
  public:
@@ -633,9 +636,9 @@ class PreParserFactory {
     // default value inside an arrow function parameter list.
     return PreParserExpression::Assignment(left.variables_);
   }
-  PreParserExpression NewYield(PreParserExpression generator_object,
-                               PreParserExpression expression, int pos,
-                               Yield::OnException on_exception) {
+  PreParserExpression NewYield(PreParserExpression expression, int pos,
+                               Yield::OnException on_exception,
+                               Yield::YieldType type) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewConditional(PreParserExpression condition,
@@ -1009,8 +1012,7 @@ class PreParser : public ParserBase<PreParser> {
                                           PreParserStatement block,
                                           PreParserExpression return_value,
                                           bool* ok) {}
-  V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression generator,
-                                                 PreParserExpression expression,
+  V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression expression,
                                                  int pos) {
     return PreParserExpression::Default();
   }
@@ -1073,11 +1075,10 @@ class PreParser : public ParserBase<PreParser> {
       int pos, FunctionKind kind, PreParserStatementList body, bool* ok) {
     ParseStatementList(body, Token::RBRACE, ok);
   }
-  V8_INLINE void CreateFunctionNameAssignment(
+  V8_INLINE void CreateFunctionNameVariable(
       PreParserIdentifier function_name, int pos,
       FunctionLiteral::FunctionType function_type,
-      DeclarationScope* function_scope, PreParserStatementList result,
-      int index) {}
+      DeclarationScope* function_scope) {}
 
   V8_INLINE PreParserExpression RewriteDoExpression(PreParserStatement body,
                                                     int pos, bool* ok) {
@@ -1531,10 +1532,6 @@ class PreParser : public ParserBase<PreParser> {
     return PreParserStatement::Jump();
   }
 
-  V8_INLINE void AddParameterInitializationBlock(
-      const PreParserFormalParameters& parameters, PreParserStatementList body,
-      bool is_async, bool* ok) {}
-
   V8_INLINE void AddFormalParameter(PreParserFormalParameters* parameters,
                                     PreParserExpression pattern,
                                     PreParserExpression initializer,