/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Mozilla Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Robert Sayre <sayrer@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "domstubs.idl"

interface nsIInputStream;
interface nsIOutputStream;
interface nsIScriptGlobalObject;

[ptr] native JSValPtr(jsval);
[ptr] native JSContext(JSContext);

/**
 * Encode and decode JSON text.
 */
[scriptable, uuid(a4d68b4e-0c0b-4c7c-b540-ef2f9834171f)]
interface nsIJSON : nsISupports
{
  /**
   * New users should use JSON.stringify!
   * The encode() method is only present for backward compatibility.
   * encode() is not a conforming JSON stringify implementation!
   */
  [deprecated] AString encode(/* in JSObject value */);

  /**
   * New users should use JSON.stringify.
   * You may also want to have a look at nsIConverterOutputStream.
   *
   * The encodeToStream() method is only present for backward compatibility.
   * encodeToStream() is not a conforming JSON stringify implementation!
   */
  [deprecated] void encodeToStream(in nsIOutputStream stream,
                                   in string charset,
                                   in boolean writeBOM
                                   /* in JSObject value */);

  /**
   * New users should use JSON.parse!
   * The decode() method is only present for backward compatibility.
   */
  [deprecated] void /* JSObject */ decode(in AString str);

  void /* JSObject */ decodeFromStream(in nsIInputStream stream,
                                       in long contentLength);

  [noscript] AString  encodeFromJSVal(in JSValPtr value, in JSContext cx);

  // Make sure you GCroot the result of this function before using it.
  [noscript] jsval    decodeToJSVal(in AString str, in JSContext cx);


  /*
   * Decode a JSON string, but also accept some strings in non-JSON format, as
   * the decoding methods here did previously before tightening.
   *
   * This method is provided only as a temporary transition path for users of
   * the old code who depended on the ability to decode leniently; new users
   * should use JSON.parse.
   *
   * This method must only be called from script.
   *
   * @param str the string to parse
   */
  void /* jsval */ legacyDecode(in AString str);

  /* Identical to legacyDecode, but decode the contents of stream. */
  void /* jsval */ legacyDecodeFromStream(in nsIInputStream stream,
                                          in long contentLength);

  /* Identical to legacyDecode, but decode into a jsval. */
  // Make sure you GCroot the result of this function before using it.
  [noscript] jsval    legacyDecodeToJSVal(in AString str, in JSContext cx);
};