/*
  This file is part of the Grantlee template system.

  Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either version
  2.1 of the Licence, 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "firstof.h"

#include "../lib/exception.h"
#include "parser.h"
#include "util.h"


FirstOfNodeFactory::FirstOfNodeFactory()
{
}

Node* FirstOfNodeFactory::getNode( const QString &tagContent, Parser *p ) const
{
  QStringList expr = smartSplit( tagContent );

  const QString tagName = expr.takeAt( 0 );

  if ( expr.size() <= 0 ) {
    throw Grantlee::Exception( TagSyntaxError, QString::fromLatin1( "%1 expects at least one argument" ).arg( tagName ) );
  }

  return new FirstOfNode( getFilterExpressionList( expr, p ), p );
}


FirstOfNode::FirstOfNode( QList<FilterExpression> list, QObject *parent )
    : Node( parent ), m_variableList( list )
{
}

void FirstOfNode::render( OutputStream *stream, Context *c ) const
{
  Q_FOREACH( const FilterExpression &fe, m_variableList ) {
    if ( fe.isTrue( c ) ) {
      fe.resolve( stream, c );
      return;
    }
  }
}
