netwerk/base/nsURIHashKey.h
author Edwin Gao <egao@mozilla.com>
Wed, 13 Mar 2019 19:47:25 +0000
changeset 463893 15c16889e3b7f6e871a518b5f3254459ed5e0213
parent 449035 66eb1f485c1a3ea81372758bc92292c9428b17cd
permissions -rw-r--r--
Bug 1531590, 1531598, 1534811, 1336075, 1531571, 1531572, 1531572, 1531574, 1534855, 1534857, 1535082 - skip tests in mochitest-dev-tools and mochitest-browser-chrome suites for windows10-aarch64 r=jmaher Bug 1531598 - disable browser_markup_copy_image_data.js Bug 1531598 - disable browser_markup_links_04.js Bug 1531598 - disable browser_inspector_menu-01-sensitivity.js Bug 1534811 - disable accessible/tests/browser/general Bug 1336075 - disable browser_largeAllocation_non_win32.js Bug 1531571 - disable browser_jsterm_context_menu_labels.js Bug 1531572 - disable browser_jsterm_helper_dollar_x.js Bug 1531573 - disable browser_jsterm_no_input_and_tab_key_pressed.js Bug 1531574 - disable browser_jsterm_syntax_highlight_output.js Bug 1534855 - disable accessible/tests/browser/ Bug 1534857 - disable browser_ext_slow_script.js Bug 1535082 - disable browser_jsterm_helper_dollar_dollar.js Differential Revision: https://phabricator.services.mozilla.com/D23369

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef nsURIHashKey_h__
#define nsURIHashKey_h__

#include "PLDHashTable.h"
#include "nsCOMPtr.h"
#include "nsIURI.h"
#include "nsHashKeys.h"
#include "mozilla/Move.h"
#include "mozilla/Unused.h"

/**
 * Hashtable key class to use with nsTHashtable/nsBaseHashtable
 */
class nsURIHashKey : public PLDHashEntryHdr {
 public:
  typedef nsIURI* KeyType;
  typedef const nsIURI* KeyTypePointer;

  explicit nsURIHashKey(const nsIURI* aKey) : mKey(const_cast<nsIURI*>(aKey)) {
    MOZ_COUNT_CTOR(nsURIHashKey);
  }
  nsURIHashKey(nsURIHashKey&& toMove)
      : PLDHashEntryHdr(std::move(toMove)), mKey(std::move(toMove.mKey)) {
    MOZ_COUNT_CTOR(nsURIHashKey);
  }
  ~nsURIHashKey() { MOZ_COUNT_DTOR(nsURIHashKey); }

  nsIURI* GetKey() const { return mKey; }

  bool KeyEquals(const nsIURI* aKey) const {
    bool eq;
    if (!mKey) {
      return !aKey;
    }
    if (NS_SUCCEEDED(mKey->Equals(const_cast<nsIURI*>(aKey), &eq))) {
      return eq;
    }
    return false;
  }

  static const nsIURI* KeyToPointer(nsIURI* aKey) { return aKey; }
  static PLDHashNumber HashKey(const nsIURI* aKey) {
    if (!aKey) {
      // If the key is null, return hash for empty string.
      return mozilla::HashString(EmptyCString());
    }
    nsAutoCString spec;
    // If GetSpec() fails, ignoring the failure and proceeding with an
    // empty |spec| seems like the best thing to do.
    mozilla::Unused << const_cast<nsIURI*>(aKey)->GetSpec(spec);
    return mozilla::HashString(spec);
  }

  enum { ALLOW_MEMMOVE = true };

 protected:
  nsCOMPtr<nsIURI> mKey;
};

#endif  // nsURIHashKey_h__