C++ (Cpp) JSArray::initializeIndexWithoutBarrier Examples

Example #1

File: RegExpMatchesArray.cpp Project: caiolima/webkit

JSArray* createEmptyRegExpMatchesArray(JSGlobalObject* globalObject, JSString* input, RegExp* regExp)
{
    VM& vm = globalObject->vm();
    JSArray* array;

    // FIXME: This should handle array allocation errors gracefully.
    // https://bugs.webkit.org/show_bug.cgi?id=155144
    
    GCDeferralContext deferralContext(vm.heap);
    
    if (UNLIKELY(globalObject->isHavingABadTime())) {
        array = JSArray::tryCreateForInitializationPrivate(vm, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
        
        array->initializeIndexWithoutBarrier(0, jsEmptyString(&vm));
        
        if (unsigned numSubpatterns = regExp->numSubpatterns()) {
            for (unsigned i = 1; i <= numSubpatterns; ++i)
                array->initializeIndexWithoutBarrier(i, jsUndefined());
        }
    } else {
        array = tryCreateUninitializedRegExpMatchesArray(vm, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
        RELEASE_ASSERT(array);
        
        array->initializeIndexWithoutBarrier(0, jsEmptyString(&vm), ArrayWithContiguous);
        
        if (unsigned numSubpatterns = regExp->numSubpatterns()) {
            for (unsigned i = 1; i <= numSubpatterns; ++i)
                array->initializeIndexWithoutBarrier(i, jsUndefined(), ArrayWithContiguous);
        }
    }

    array->putDirectWithoutBarrier(RegExpMatchesArrayIndexPropertyOffset, jsNumber(-1));
    array->putDirectWithoutBarrier(RegExpMatchesArrayInputPropertyOffset, input);
    return array;
}