dom/src/json/nsJSON.h
author Dão Gottwald <dao@mozilla.com>
Fri, 07 Jan 2011 21:27:00 +0100
changeset 60220 f03c81553b326dbe1516998584c3d31bf98e7a2f
parent 52497 77a30f0f6a17c3fbe2c9e1bbc74f26100edf217e
child 67924 7b977e10c72163a2a472e64f9e75f924a2999fd7
permissions -rw-r--r--
Bug 614290 - Remove pinnedonly attribute when adding new tabs. r=gavin

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * the Initial Developer. All Rights Reserved.
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 *   Robert Sayre <sayrer@gmail.com>
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#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;

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

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

  nsCOMPtr<nsIUnicodeEncoder> mEncoder;
};

class nsJSON : public nsIJSON
{
public:
  nsJSON();
  virtual ~nsJSON();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIJSON

protected:
  nsresult EncodeInternal(nsJSONWriter *writer);

  nsresult DecodeInternal(nsIInputStream *aStream,
                          PRInt32 aContentLength,
                          PRBool aNeedsConverter,
                          DecodingMode mode = STRICT);
  nsCOMPtr<nsIURI> mURI;
};

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

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

  NS_DECL_ISUPPORTS
  NS_DECL_NSIREQUESTOBSERVER
  NS_DECL_NSISTREAMLISTENER

protected:
  PRBool mNeedsConverter;
  JSONParser *mJSONParser;
  JSContext *mCx;
  jsval *mRootVal;
  nsCOMPtr<nsIUnicodeDecoder> mDecoder;
  nsCString mSniffBuffer;
  DecodingMode mDecodingMode;
  nsresult ProcessBytes(const char* aBuffer, PRUint32 aByteLength);
  nsresult ConsumeConverted(const char* aBuffer, PRUint32 aByteLength);
  nsresult Consume(const PRUnichar *data, PRUint32 len);
  void Cleanup();
};

#endif