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Unified Diff: src/objects.h

Issue 2632503003: [runtime] Allocate space for computed property names (Closed)
Patch Set: Fix typo. Created 3 years, 11 months ago
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Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 77bc06430c7f4730b27412dd56742a9f6354b31a..2299bcbed309a1b0b3d6f305a25604a5aaf47181 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1051,6 +1051,7 @@ template <class C> inline bool Is(Object* obj);
V(DependentCode) \
V(HandlerTable) \
V(FixedArray) \
+ V(BoilerplateDescription) \
V(FixedDoubleArray) \
V(WeakFixedArray) \
V(ArrayList) \
@@ -2906,6 +2907,27 @@ class FixedArray: public FixedArrayBase {
DISALLOW_IMPLICIT_CONSTRUCTORS(FixedArray);
};
+// BoilerplateDescription is a list of properties consisting of name value
+// pairs. In addition to the properties, it provides the number of all
+// properties. This number includes properties with computed names that are not
+// in the list. We need the total number for allocating space in the property
+// backing store.
+class BoilerplateDescription : public FixedArray {
+ public:
+ // Number of boilerplate properties and properties with computed names.
+ int number_of_all_properties() const;
+
+ // The number of boilerplate properties.
+ int size() const;
+
+ Object* name(int index) const;
+ Object* value(int index) const;
+
+ DECLARE_CAST(BoilerplateDescription)
+
+ private:
+ bool has_number_of_properties() const;
+};
// FixedDoubleArray describes fixed-sized arrays with element type double.
class FixedDoubleArray: public FixedArrayBase {
@@ -6389,7 +6411,6 @@ class Map: public HeapObject {
static const int kInstanceTypeAndBitFieldOffset =
kInstanceAttributesOffset + 0;
static const int kBitField2Offset = kInstanceAttributesOffset + 2;
- static const int kUnusedPropertyFieldsByte = 3;
static const int kUnusedPropertyFieldsOffset = kInstanceAttributesOffset + 3;
STATIC_ASSERT(kInstanceTypeAndBitFieldOffset ==

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