void BlockNode::render( OutputStream *stream, Context *c )
{
QVariant &variant = c->renderContext()->data( BLOCK_CONTEXT_KEY );
BlockContext blockContext = variant.value<BlockContext>();
c->push();
if ( blockContext.isEmpty() ) {
m_context = c;
m_stream = stream;
c->insert( QLatin1String( "block" ), QVariant::fromValue( static_cast<QObject *>( this ) ) );
m_list.render( stream, c );
m_stream = 0;
} else {
BlockNode *block = blockContext.pop( m_name );
variant.setValue( blockContext );
BlockNode *push = block;
if ( !block )
block = this;
// BIC Make const when render() is const.
NodeList list = block->m_list;
block = new BlockNode( block->m_name, 0 );
block->setNodeList( list );
block->m_context = c;
block->m_stream = stream;
c->insert( QLatin1String( "block" ), QVariant::fromValue( static_cast<QObject *>( block ) ) );
list.render( stream, c );
delete block;
if ( push ) {
blockContext.push( m_name, push );
variant.setValue( blockContext );
}
}
c->pop();
}
Node* BlockNodeFactory::getNode( const QString &tagContent, Parser *p ) const
{
const QStringList expr = smartSplit( tagContent );
if ( expr.size() != 2 ) {
throw Grantlee::Exception( TagSyntaxError, QLatin1String( "block tag takes one argument" ) );
}
const QString blockName = expr.at( 1 );
QVariant loadedBlocksVariant = p->property( __loadedBlocks );
QVariantList blockVariantList;
if ( loadedBlocksVariant.isValid() && loadedBlocksVariant.type() == QVariant::List ) {
blockVariantList = loadedBlocksVariant.toList();
QListIterator<QVariant> it( blockVariantList );
while ( it.hasNext() ) {
const QString blockNodeName = it.next().toString();
if ( blockNodeName == blockName ) {
throw Grantlee::Exception( TagSyntaxError, QString::fromLatin1( "%1 appears more than once." ).arg( blockName ) );
}
}
}
// Block not already in list.
blockVariantList.append( blockName );
loadedBlocksVariant = QVariant( blockVariantList );
p->setProperty( __loadedBlocks, loadedBlocksVariant );
BlockNode *n = new BlockNode( blockName, p );
const NodeList list = p->parse( n, QStringList() << QLatin1String( "endblock" ) << QLatin1String( "endblock " ) + blockName );
n->setNodeList( list );
p->removeNextToken();
return n;
}