forked from mirrors/gecko-dev
2dee0aae3c
This allows JS callers to automatically get the correct types during interation, without having to explicitly specify them. Differential Revision: https://phabricator.services.mozilla.com/D3728 --HG-- extra : rebase_source : b708f382d8ea571d199c669bfed5b5a7ca9ffac4 extra : histedit_source : 7df6feb82088c8a5ca45dc28fe4d2b852c177fee
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/* -*- 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
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsSimpleEnumerator.h"
|
|
|
|
#include "mozilla/dom/IteratorResultBinding.h"
|
|
#include "mozilla/dom/RootedDictionary.h"
|
|
#include "mozilla/dom/ToJSValue.h"
|
|
#include "mozilla/ResultExtensions.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)
|