caps/NullPrincipalURI.h
author Nicholas Nethercote <nnethercote@mozilla.com>
Tue, 26 Sep 2017 08:33:21 +1000
changeset 383168 1ede5092b3695bac4248f6f9435120a7ef603a7c
parent 375606 a5f0bad7a33adbe4a0802a65977069dec6a002d5
child 392878 306f999b79a588565b9e73dfda75c13248263dde
permissions -rw-r--r--
Bug 1400459 (part 2) - Devirtualize nsIAtom. r=heycam. This patch merges nsAtom into nsIAtom. For the moment, both names can be used interchangeably due to a typedef. The patch also devirtualizes nsIAtom, by making it not inherit from nsISupports, removing NS_DECL_NSIATOM, and dropping the use of NS_IMETHOD_. It also removes nsIAtom's IIDs. These changes trigger knock-on changes throughout the codebase, changing the types of lots of things as follows. - nsCOMPtr<nsIAtom> --> RefPtr<nsIAtom> - nsCOMArray<nsIAtom> --> nsTArray<RefPtr<nsIAtom>> - Count() --> Length() - ObjectAt() --> ElementAt() - AppendObject() --> AppendElement() - RemoveObjectAt() --> RemoveElementAt() - ns*Hashtable<nsISupportsHashKey, ...> --> ns*Hashtable<nsRefPtrHashKey<nsIAtom>, ...> - nsInterfaceHashtable<T, nsIAtom> --> nsRefPtrHashtable<T, nsIAtom> - This requires adding a Get() method to nsRefPtrHashtable that it lacks but nsInterfaceHashtable has. - nsCOMPtr<nsIMutableArray> --> nsTArray<RefPtr<nsIAtom>> - nsArrayBase::Create() --> nsTArray() - GetLength() --> Length() - do_QueryElementAt() --> operator[] The patch also has some changes to Rust code that manipulates nsIAtom. MozReview-Commit-ID: DykOl8aEnUJ

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 sts=2 expandtab
 * 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/. */

/**
 * This wraps nsSimpleURI so that all calls to it are done on the main thread.
 */

#ifndef __NullPrincipalURI_h__
#define __NullPrincipalURI_h__

#include "nsIURI.h"
#include "nsISizeOf.h"
#include "nsString.h"
#include "mozilla/Attributes.h"
#include "nsIIPCSerializableURI.h"
#include "mozilla/MemoryReporting.h"
#include "NullPrincipal.h"
#include "nsID.h"

// {51fcd543-3b52-41f7-b91b-6b54102236e6}
#define NS_NULLPRINCIPALURI_IMPLEMENTATION_CID \
  {0x51fcd543, 0x3b52, 0x41f7, \
    {0xb9, 0x1b, 0x6b, 0x54, 0x10, 0x22, 0x36, 0xe6} }

class NullPrincipalURI final : public nsIURI
                             , public nsISizeOf
                             , public nsIIPCSerializableURI
{
public:
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_NSIURI
  NS_DECL_NSIIPCSERIALIZABLEURI

  // nsISizeOf
  virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override;

  // NB: This constructor exists only for deserialization.  Everyone
  // else should call Create.
  NullPrincipalURI();

  // Returns null on failure.
  static already_AddRefed<NullPrincipalURI> Create();

private:
  NullPrincipalURI(const NullPrincipalURI& aOther);

  ~NullPrincipalURI() {}

  nsresult Init();

  nsAutoCStringN<NSID_LENGTH> mPath;
};

#endif // __NullPrincipalURI_h__