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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 "nsSimpleEnumerator.h"
#include "mozilla/dom/IteratorResultBinding.h"
#include "mozilla/dom/RootedDictionary.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/ResultExtensions.h"
#include "mozilla/Try.h"
#include "nsContentUtils.h"
using namespace mozilla;
using namespace mozilla::dom;
namespace {
class JSEnumerator final : public nsIJSEnumerator {
NS_DECL_ISUPPORTS
NS_DECL_NSIJSENUMERATOR
explicit JSEnumerator(nsISimpleEnumerator* aEnumerator, const nsID& aIID)
: mEnumerator(aEnumerator), mIID(aIID) {}
private:
~JSEnumerator() = default;
nsCOMPtr<nsISimpleEnumerator> mEnumerator;
const nsID mIID;
};
} // anonymous namespace
nsresult JSEnumerator::Iterator(nsIJSEnumerator** aResult) {
RefPtr<JSEnumerator> result(this);
result.forget(aResult);
return NS_OK;
}
nsresult JSEnumerator::Next(JSContext* aCx, JS::MutableHandleValue aResult) {
RootedDictionary<IteratorResult> result(aCx);
nsCOMPtr<nsISupports> elem;
if (NS_FAILED(mEnumerator->GetNext(getter_AddRefs(elem)))) {
result.mDone = true;
} else {
result.mDone = false;
JS::RootedValue value(aCx);
MOZ_TRY(nsContentUtils::WrapNative(aCx, elem, &mIID, &value));
result.mValue = value;
}
if (!ToJSValue(aCx, result, aResult)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS(JSEnumerator, nsIJSEnumerator)
nsresult nsSimpleEnumerator::Iterator(nsIJSEnumerator** aResult) {
auto result = MakeRefPtr<JSEnumerator>(this, DefaultInterface());
result.forget(aResult);
return NS_OK;
}
nsresult nsSimpleEnumerator::Entries(const nsIID& aIface,
nsIJSEnumerator** aResult) {
auto result = MakeRefPtr<JSEnumerator>(this, aIface);
result.forget(aResult);
return NS_OK;
}
NS_IMPL_ISUPPORTS(nsSimpleEnumerator, nsISimpleEnumerator,
nsISimpleEnumeratorBase)