SpiderMonkey Internal

SpiderMonkey Internal

JSObject

1
2
3
4
5
6
7
8
9
10
11
12
13
// Class Hierarchy
// ---------------
// Property maps have the following C++ class hierarchy:
//
//   PropMap (abstract)
//    |
//    +-- SharedPropMap (abstract)
//    |      |
//    |      +-- CompactPropMap
//    |      |
//    |      +-- NormalPropMap
//    |
//    +-- DictionaryPropMap

The PropertyInfo contains the slot index of the property.

1
obj->getSlot(prop.slot());
1
2
3
4
5
6
7
8
9
10
11
12
class NativeObject : public JSObject {
  // ...
  const Value& getSlot(uint32_t slot) const {
    MOZ_ASSERT(slotInRange(slot));
    uint32_t fixed = numFixedSlots();
    if (slot < fixed) {
      return fixedSlots()[slot];
    }
    return slots_[slot - fixed];
  }
  // ...
}

[To be continued]