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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "xpcprivate.h"
#include "mozilla/ResultExtensions.h"
#include "mozilla/Try.h"
#include "mozilla/dom/IteratorResultBinding.h"
#include "mozilla/dom/RootedDictionary.h"
#include "mozilla/dom/ScriptSettings.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace xpc;
NS_IMPL_CYCLE_COLLECTION(XPCWrappedJSIterator, mEnum, mGlobal, mNext)
NS_IMPL_CYCLE_COLLECTING_ADDREF(XPCWrappedJSIterator)
NS_IMPL_CYCLE_COLLECTING_RELEASE(XPCWrappedJSIterator)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(XPCWrappedJSIterator)
NS_INTERFACE_MAP_ENTRY(nsISimpleEnumerator)
NS_INTERFACE_MAP_ENTRY(nsISimpleEnumeratorBase)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, XPCWrappedJSIterator)
NS_INTERFACE_MAP_END
XPCWrappedJSIterator::XPCWrappedJSIterator(nsIJSEnumerator* aEnum)
: mEnum(aEnum) {
nsCOMPtr<nsIXPConnectWrappedJS> wrapped = do_QueryInterface(aEnum);
MOZ_ASSERT(wrapped);
mGlobal = NativeGlobal(wrapped->GetJSObjectGlobal());
}
nsresult XPCWrappedJSIterator::HasMoreElements(bool* aRetVal) {
if (mHasNext.isNothing()) {
AutoJSAPI jsapi;
MOZ_ALWAYS_TRUE(jsapi.Init(mGlobal));
JSContext* cx = jsapi.cx();
JS::RootedValue val(cx);
MOZ_TRY(mEnum->Next(cx, &val));
RootedDictionary<IteratorResult> result(cx);
if (!result.Init(cx, val)) {
return NS_ERROR_FAILURE;
}
if (!result.mDone) {
if (result.mValue.isObject()) {
JS::RootedObject obj(cx, &result.mValue.toObject());
nsresult rv;
if (!XPCConvert::JSObject2NativeInterface(cx, getter_AddRefs(mNext),
obj, &NS_GET_IID(nsISupports),
nullptr, &rv)) {
return rv;
}
} else {
mNext = XPCVariant::newVariant(cx, result.mValue);
}
}
mHasNext = Some(!result.mDone);
}
*aRetVal = *mHasNext;
return NS_OK;
}
nsresult XPCWrappedJSIterator::GetNext(nsISupports** aRetVal) {
bool hasMore;
MOZ_TRY(HasMoreElements(&hasMore));
if (!hasMore) {
return NS_ERROR_FAILURE;
}
mNext.forget(aRetVal);
mHasNext = Nothing();
return NS_OK;
}
nsresult XPCWrappedJSIterator::Iterator(nsIJSEnumerator** aRetVal) {
nsCOMPtr<nsIJSEnumerator> jsEnum = mEnum;
jsEnum.forget(aRetVal);
return NS_OK;
}
nsresult XPCWrappedJSIterator::Entries(const nsID&, nsIJSEnumerator** aRetVal) {
return NS_ERROR_NOT_IMPLEMENTED;
}