author Mike Hommey <>
Fri, 02 Jun 2017 15:07:58 +0900
changeset 410640 f360dd9d411e7ba61531bed2c32a0981cc6c418a
parent 342798 155012d3d3731e10e085ae0841d308ca0515a35c
child 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1369622 - Restore static asserts for lack of arguments on some macros. r=froydnj Bug 1368932 removed MOZ_STATIC_ASSERT_VALID_ARG_COUNT because it didn't actually work for large numbers of arguments. But it was kind of useful for macros that expand to something broken when they are given no variadic argument at all. Now that we have a macro that doesn't require tricks to count empty arguments lists, however, we can use straightforward static_asserts instead of a generic macro, which has the side effect of providing more context in the error message.

/* -*- 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 */

#include "XMLHttpRequest.h"
#include "XMLHttpRequestMainThread.h"
#include "XMLHttpRequestWorker.h"

namespace mozilla {
namespace dom {

/* static */ already_AddRefed<XMLHttpRequest>
XMLHttpRequest::Constructor(const GlobalObject& aGlobal,
                            const MozXMLHttpRequestParameters& aParams,
                            ErrorResult& aRv)
  if (NS_IsMainThread()) {
    nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
    nsCOMPtr<nsIScriptObjectPrincipal> principal =
    if (!global || ! principal) {
      return nullptr;

    RefPtr<XMLHttpRequestMainThread> req = new XMLHttpRequestMainThread();
    req->Construct(principal->GetPrincipal(), global);
    req->InitParameters(aParams.mMozAnon, aParams.mMozSystem);
    return req.forget();

  return XMLHttpRequestWorker::Construct(aGlobal, aParams, aRv);

} // dom namespace
} // mozilla namespace