C++ (Cpp) HandleArrayObject::getDenseInitializedLengthの例

コード例 #1

ファイル: MapObject.cpp プロジェクト: paulmadore/luckyde

bool
MapIteratorObject::next(JSContext* cx, Handle<MapIteratorObject*> mapIterator,
                        HandleArrayObject resultPairObj)
{
    MOZ_ASSERT(resultPairObj->getDenseInitializedLength() == 2);

    ValueMap::Range* range = MapIteratorObjectRange(mapIterator);
    if (!range || range->empty()) {
        js_delete(range);
        mapIterator->setReservedSlot(RangeSlot, PrivateValue(nullptr));
        return true;
    }
    switch (mapIterator->kind()) {
      case MapObject::Keys:
        resultPairObj->setDenseElementWithType(cx, 0, range->front().key.get());
        break;

      case MapObject::Values:
        resultPairObj->setDenseElementWithType(cx, 1, range->front().value);
        break;

      case MapObject::Entries: {
        resultPairObj->setDenseElementWithType(cx, 0, range->front().key.get());
        resultPairObj->setDenseElementWithType(cx, 1, range->front().value);
        break;
      }
    }
    range->popFront();
    return false;
}

コード例 #2

ファイル: MapObject.cpp プロジェクト: cstipkovic/gecko-dev

bool
MapIteratorObject::next(JSContext* cx, Handle<MapIteratorObject*> mapIterator,
                        HandleArrayObject resultPairObj)
{
    // Check invariants for inlined _GetNextMapEntryForIterator.

    // The array should be tenured, so that post-barrier can be done simply.
    MOZ_ASSERT(resultPairObj->isTenured());

    // The array elements should be fixed.
    MOZ_ASSERT(resultPairObj->hasFixedElements());
    MOZ_ASSERT(resultPairObj->getDenseInitializedLength() == 2);
    MOZ_ASSERT(resultPairObj->getDenseCapacity() >= 2);

    ValueMap::Range* range = MapIteratorObjectRange(mapIterator);
    if (!range || range->empty()) {
        js_delete(range);
        mapIterator->setReservedSlot(RangeSlot, PrivateValue(nullptr));
        return true;
    }
    switch (mapIterator->kind()) {
      case MapObject::Keys:
        resultPairObj->setDenseElementWithType(cx, 0, range->front().key.get());
        break;

      case MapObject::Values:
        resultPairObj->setDenseElementWithType(cx, 1, range->front().value);
        break;

      case MapObject::Entries: {
        resultPairObj->setDenseElementWithType(cx, 0, range->front().key.get());
        resultPairObj->setDenseElementWithType(cx, 1, range->front().value);
        break;
      }
    }
    range->popFront();
    return false;
}

コード例 #3

ファイル: MapObject.cpp プロジェクト: bitwiseworks/mozilla-os2

bool
SetIteratorObject::next(Handle<SetIteratorObject*> setIterator, HandleArrayObject resultObj,
                        JSContext* cx)
{
    // Check invariants for inlined _GetNextSetEntryForIterator.

    // The array should be tenured, so that post-barrier can be done simply.
    MOZ_ASSERT(resultObj->isTenured());

    // The array elements should be fixed.
    MOZ_ASSERT(resultObj->hasFixedElements());
    MOZ_ASSERT(resultObj->getDenseInitializedLength() == 1);
    MOZ_ASSERT(resultObj->getDenseCapacity() >= 1);

    ValueSet::Range* range = SetIteratorObjectRange(setIterator);
    if (!range || range->empty()) {
        js_delete(range);
        setIterator->setReservedSlot(RangeSlot, PrivateValue(nullptr));
        return true;
    }
    resultObj->setDenseElementWithType(cx, 0, range->front().get());
    range->popFront();
    return false;
}