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Clean up and rename MoveBoxedOrUnboxedDenseElements.

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This commit is contained in:
wolfbeast 2019-06-13 11:42:21 +00:00 • committed by Roy Tam
commit 79dfc644d3
2 changed files with 19 additions and 22 deletions
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25
js/src/jsarray.cpp
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@ -2132,6 +2132,20 @@ SetInitializedLength(JSContext* cx, NativeObject* obj, size_t initlen)
obj->shrinkElements(cx, initlen);
}
static DenseElementResult
MoveDenseElements(JSContext* cx, NativeObject* obj, uint32_t dstStart, uint32_t srcStart,
uint32_t length)
{
if (obj->denseElementsAreFrozen())
return DenseElementResult::Incomplete;
if (!obj->maybeCopyElementsForWrite(cx))
return DenseElementResult::Failure;
obj->moveDenseElements(dstStart, srcStart, length);
return DenseElementResult::Success;
}
static DenseElementResult
ArrayShiftDenseKernel(JSContext* cx, HandleObject obj, MutableHandleValue rval)
{
@ -2153,7 +2167,7 @@ ArrayShiftDenseKernel(JSContext* cx, HandleObject obj, MutableHandleValue rval)
if (rval.isMagic(JS_ELEMENTS_HOLE))
rval.setUndefined();
DenseElementResult result = MoveBoxedOrUnboxedDenseElements(cx, obj, 0, 1, initlen - 1);
DenseElementResult result = MoveDenseElements(cx, &obj->as<NativeObject>(), 0, 1, initlen - 1);
if (result != DenseElementResult::Success)
return result;
@ -2514,8 +2528,7 @@ js::array_splice_impl(JSContext* cx, unsigned argc, Value* vp, bool returnValueI
if (CanOptimizeForDenseStorage(obj, 0, len, cx)) {
/* Steps 15.a-b. */
DenseElementResult result =
MoveBoxedOrUnboxedDenseElements(cx, obj, targetIndex, sourceIndex,
len - sourceIndex);
MoveDenseElements(cx, &obj->as<NativeObject>(), targetIndex, sourceIndex, len - sourceIndex);
MOZ_ASSERT(result != DenseElementResult::Incomplete);
if (result == DenseElementResult::Failure)
return false;
@ -2601,9 +2614,9 @@ js::array_splice_impl(JSContext* cx, unsigned argc, Value* vp, bool returnValueI
if (CanOptimizeForDenseStorage(obj, len, itemCount - actualDeleteCount, cx)) {
DenseElementResult result =
MoveBoxedOrUnboxedDenseElements(cx, obj, actualStart + itemCount,
actualStart + actualDeleteCount,
len - (actualStart + actualDeleteCount));
MoveDenseElements(cx, &obj->as<NativeObject>(), actualStart + itemCount,
actualStart + actualDeleteCount,
len - (actualStart + actualDeleteCount));
MOZ_ASSERT(result != DenseElementResult::Incomplete);
if (result == DenseElementResult::Failure)
return false;