author Kartikaya Gupta <>
Fri, 13 Apr 2012 10:29:14 -0400
changeset 91612 84351dbcd62d12769fb601e11cc098849faee073
parent 80823 8721b2f56bdcf4eda5e95df3cb6f750919d9bdd4
child 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 105366 a64147b4cccbdecd64ad218625df24981f5e86c5
permissions -rw-r--r--
Bug 742115 - Make the java panning constants preffable; original patch stolen from :joe. r=Cwiiis

/* -*- 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
 * 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 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 <>
 * 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 ***** */

#ifndef nsJSON_h__
#define nsJSON_h__

#include "jsapi.h"
#include "json.h"
#include "nsIJSON.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsIOutputStream.h"
#include "nsIUnicodeEncoder.h"
#include "nsIUnicodeDecoder.h"
#include "nsIRequestObserver.h"
#include "nsIStreamListener.h"
#include "nsTArray.h"

class nsIURI;

  nsJSONWriter(nsIOutputStream *aStream);
  virtual ~nsJSONWriter();
  nsresult SetCharset(const char *aCharset);
  nsCOMPtr<nsIOutputStream> mStream;
  nsresult Write(const PRUnichar *aBuffer, PRUint32 aLength);
  nsString mOutputString;
  bool DidWrite();
  void FlushBuffer();

  PRUnichar *mBuffer;
  PRUint32 mBufferCount;
  bool mDidWrite;
  nsresult WriteToStream(nsIOutputStream *aStream, nsIUnicodeEncoder *encoder,
                         const PRUnichar *aBuffer, PRUint32 aLength);

  nsCOMPtr<nsIUnicodeEncoder> mEncoder;

class nsJSON : public nsIJSON
  virtual ~nsJSON();


  nsresult EncodeInternal(JSContext* cx,
                          const JS::Value& val,
                          nsJSONWriter* writer);

  nsresult DecodeInternal(JSContext* cx,
                          nsIInputStream* aStream,
                          PRInt32 aContentLength,
                          bool aNeedsConverter,
                          JS::Value* aRetVal,
                          DecodingMode mode = STRICT);
  nsCOMPtr<nsIURI> mURI;

NS_NewJSON(nsISupports* aOuter, REFNSIID aIID, void** aResult);

class nsJSONListener : public nsIStreamListener
  nsJSONListener(JSContext *cx, jsval *rootVal, bool needsConverter,
                 DecodingMode mode);
  virtual ~nsJSONListener();


  bool mNeedsConverter;
  JSContext *mCx;
  jsval *mRootVal;
  nsCOMPtr<nsIUnicodeDecoder> mDecoder;
  nsCString mSniffBuffer;
  nsTArray<PRUnichar> mBufferedChars;
  DecodingMode mDecodingMode;
  nsresult ProcessBytes(const char* aBuffer, PRUint32 aByteLength);
  nsresult ConsumeConverted(const char* aBuffer, PRUint32 aByteLength);
  nsresult Consume(const PRUnichar *data, PRUint32 len);