/* This file is part of QJson

 *

 * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#include "parser.h"

#include "parser_p.h"

#include "json_parser.hh"

#include "json_scanner.h"

#include <QtCore/QBuffer>

#include <QtCore/QStringList>

#include <QtCore/QTextStream>

#include <QtCore/QDebug>

using namespace QJson;

ParserPrivate::ParserPrivate() :

    m_scanner(0)

  , m_negate(false)

  , m_error(false)

{

}

ParserPrivate::~ParserPrivate()

{

  delete m_scanner;

}

void ParserPrivate::setError(QString errorMsg, int errorLine) {

  m_error = true;

  m_errorMsg = errorMsg;

  m_errorLine = errorLine;

}

Parser::Parser() :

    d(new ParserPrivate)

{

}

Parser::~Parser()

{

  delete d;

}

QVariant Parser::parse (QIODevice* io, bool* ok)

{

  d->m_errorMsg.clear();

  delete d->m_scanner;

  d->m_scanner = 0;

  if (!io->isOpen()) {

    if (!io->open(QIODevice::ReadOnly)) {

      if (ok != 0)

        *ok = false;

      qCritical ("Error opening device");

      return QVariant();

    }

  }

  if (!io->isReadable()) {

    if (ok != 0)

      *ok = false;

    qCritical ("Device is not readable");

    io->close();

    return QVariant();

  }

  d->m_scanner = new JSonScanner (io);

  yy::json_parser parser(d);

  parser.parse();

  delete d->m_scanner;

  d->m_scanner = 0;

  if (ok != 0)

    *ok = !d->m_error;

  io->close();

  return d->m_result;

}

QVariant Parser::parse(const QByteArray& jsonString, bool* ok) {

  QBuffer buffer;

  buffer.open(QBuffer::ReadWrite);

  buffer.write(jsonString);

  buffer.seek(0);

  return parse (&buffer, ok);

}

QString Parser::errorString() const

{

  return d->m_errorMsg;

}

int Parser::errorLine() const

{

  return d->m_errorLine;

}