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/* -*- Mode: IDL; 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/. */

#include "nsISupports.idl"
#include "nsIFile.idl"

// Note that the PrefixSet name is historical and we do properly support
// duplicated values, so it's really a Prefix Trie.
// All methods are thread-safe.
[scriptable, uuid(3d8579f0-75fa-4e00-ba41-38661d5b5d17)]
interface nsIUrlClassifierPrefixSet : nsISupports
{
  // Initialize the PrefixSet. Give it a name for memory reporting.
  void init(in ACString aName);
  // Fills the PrefixSet with the given array of prefixes.
  // Can send an empty Array to clear the tree.
  // Requires array to be sorted.
  void setPrefixes([const, array, size_is(aLength)] in unsigned long aPrefixes,
                   in unsigned long aLength);
  void getPrefixes(out unsigned long aCount,
                  [array, size_is(aCount), retval] out unsigned long aPrefixes);
  // Do a lookup in the PrefixSet, return whether the value is present.
  boolean contains(in unsigned long aPrefix);
  boolean isEmpty();
};