[ESnext] Implement Object Rest

src/ast/ast.h

Index: src/ast/ast.h
diff --git a/src/ast/ast.h b/src/ast/ast.h
index 12e8de97158c3d44c8b6c28f469aec59b3642461..c05d303e2d1a26e94831278907b2933c0b50b16f 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -1454,14 +1454,18 @@ class ObjectLiteral final : public MaterializedLiteral {
   void AssignFeedbackVectorSlots(Isolate* isolate, FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache);
 
+  bool has_rest_property() const { return has_rest_property_; }
+
  private:
   friend class AstNodeFactory;
 
   ObjectLiteral(ZoneList<Property*>* properties, int literal_index,
-                uint32_t boilerplate_properties, int pos)
+                uint32_t boilerplate_properties, int pos,
+                bool has_rest_property)
       : MaterializedLiteral(literal_index, pos, kObjectLiteral),
         boilerplate_properties_(boilerplate_properties),
-        properties_(properties) {
+        properties_(properties),
+        has_rest_property_(has_rest_property) {
     bit_field_ |= FastElementsField::encode(false) |
                   HasElementsField::encode(false) |
                   MayStoreDoublesField::encode(false);
@@ -1473,6 +1477,7 @@ class ObjectLiteral final : public MaterializedLiteral {
   uint32_t boilerplate_properties_;
   Handle<FixedArray> constant_properties_;
   ZoneList<Property*>* properties_;
+  bool has_rest_property_;

[adamk, 2017/01/10 23:22:55]

This should be stored in the bit_field_, like the other bools below.

[gsathya, 2017/01/12 21:27:41]

Done.

 
   class FastElementsField
       : public BitField<bool, MaterializedLiteral::kNextBitFieldIndex, 1> {};
@@ -3311,9 +3316,10 @@ class AstNodeFactory final BASE_EMBEDDED {
 
   ObjectLiteral* NewObjectLiteral(
       ZoneList<ObjectLiteral::Property*>* properties, int literal_index,
-      uint32_t boilerplate_properties, int pos) {
+      uint32_t boilerplate_properties, int pos, bool has_rest_property) {
     return new (zone_)
-        ObjectLiteral(properties, literal_index, boilerplate_properties, pos);
+        ObjectLiteral(properties, literal_index, boilerplate_properties, pos,
+                      has_rest_property);
   }
 
   ObjectLiteral::Property* NewObjectLiteralProperty(