public function enterPaginationFilterNode(\Twig_Node_Expression_Function $node, \Twig_Environment $env)
{
$args = $node->getNode('arguments');
if (!$args->hasNode(0)) {
throw new \Twig_Error_Syntax('Missing first argument of "paginate" function.');
}
// extract $maxPerPage;
if ($args->hasNode(1)) {
$arg = $args->getNode(1);
if (!$arg instanceof \Twig_Node_Expression_Constant) {
throw new \Twig_Error_Syntax('Second argument (optional) of "paginate" function should be an integer.');
}
$maxPerPage = (int) $arg->getAttribute('value');
} else {
$maxPerPage = $this->maxPerPage;
}
$this->alterRenderDocumentsWithPagination();
$nodeToPaginate = $args->getNode(0);
// Set-up the PaginationNode
$extra = $this->currentModule->getNode('blocks');
if (!$extra->hasNode('pagination')) {
$extra->setNode('pagination', new PaginationNode());
}
$extra->getNode('pagination')->addNodeToPaginate($nodeToPaginate, $maxPerPage);
// Filter the node with "|slice(offset, maxPerPage)"
$slicedNode = new \Twig_Node_Expression_Filter($nodeToPaginate, new \Twig_Node_Expression_Constant('slice', 1), new \Twig_Node(array(new \Twig_Node_Expression_Name(sprintf('__offset_%s__', $this->currentNumberOfPagination), 1), new \Twig_Node_Expression_Constant($maxPerPage, 1))), 1);
return $slicedNode;
}
/**
* @covers Twig_Node_Expression_Function::__construct
*/
public function testConstructor()
{
$name = 'function';
$args = new Twig_Node();
$node = new Twig_Node_Expression_Function($name, $args, 0);
$this->assertEquals($name, $node->getAttribute('name'));
$this->assertEquals($args, $node->getNode('arguments'));
}
/**
* @param \Twig_Node_Expression_Function $node
* @return mixed
* @throws \Twig_Error
*/
private function resolve(\Twig_Node_Expression_Function $node)
{
$args = $node->getNode('arguments');
if ($args instanceof \Twig_Node && 1 === $args->count()) {
$constNode = $args->getNode(0);
if ($constNode instanceof \Twig_Node_Expression_Constant && null !== ($value = $constNode->getAttribute('value'))) {
if (!defined($value)) {
throw new \Twig_Error(sprintf("Can't resolve constant('%s')", $value));
}
if ($this->evaluate) {
return new \Twig_Node_Expression_Constant(constant($value), $node->getLine());
} else {
return new StaticConstantExpression($value, $node->getLine());
}
}
}
return $node;
}
/**
* Parses arguments of a Function node and pushes entry into list of extracted strings.
*
* @param Twig_Node_Expression_Function $node
* @param mixed Variable number of arguments representing roles of the Twig function arguments.
*/
protected function pushFunction(Twig_Node_Expression_Function $node)
{
$args = func_get_args();
array_shift($args);
$valueNodes = array();
foreach ($node->getNode('arguments') as $i => $argumentNode) {
if (!isset($args[$i])) {
break;
}
$valueNodes[$args[$i]] = $argumentNode;
}
$this->pushEntry($node, $valueNodes);
}
