Loads asset formulae from Twig templates. More...

Inheritance diagram for Assetic\Extension\Twig\TwigFormulaLoader:

Collaboration diagram for Assetic\Extension\Twig\TwigFormulaLoader:

Public Member Functions
	__construct (\Twig_Environment $twig, LoggerInterface $logger=null)

	load (ResourceInterface $resource)
	Loads formulae from a resource. More...

	load (ResourceInterface $resource)
	Loads formulae from a resource. More...

Private Member Functions
	loadNode (\Twig_Node $node)
	Loads assets from the supplied node. More...

Private Attributes
	$twig

	$logger

Detailed Description

Loads asset formulae from Twig templates.

Author: Kris Wallsmith kris..nosp@m.wall.nosp@m.smith.nosp@m.@gma.nosp@m.il.co.nosp@m.m

Definition at line 23 of file TwigFormulaLoader.php.

Constructor & Destructor Documentation

◆ __construct()

Assetic\Extension\Twig\TwigFormulaLoader::__construct	(	\Twig_Environment	$twig,
		LoggerInterface	$logger = `null`
	)

Definition at line 28 of file TwigFormulaLoader.php.

    {
        $this->twig = $twig;
        $this->logger = $logger;
    }

References Assetic\Extension\Twig\TwigFormulaLoader\$logger, and Assetic\Extension\Twig\TwigFormulaLoader\$twig.

Member Function Documentation

◆ load()

Assetic\Extension\Twig\TwigFormulaLoader::load ( ResourceInterface $resource )

Loads formulae from a resource.

Formulae should be loaded the same regardless of the current debug mode. Debug considerations should happen downstream.

Parameters

ResourceInterface $resource A resource

Returns: array An array of formulae

Implements Assetic\Factory\Loader\FormulaLoaderInterface.

Definition at line 34 of file TwigFormulaLoader.php.

    {
        try {
            $tokens = $this->twig->tokenize($resource->getContent(), (string) $resource);
            $nodes  = $this->twig->parse($tokens);
        } catch (\Exception $e) {
            if ($this->logger) {
                $this->logger->error(sprintf('The template "%s" contains an error: %s', $resource, $e->getMessage()));
            }
 
            return array();
        }
 
        return $this->loadNode($nodes);
    }

References Assetic\Factory\Resource\ResourceInterface\getContent(), Assetic\Extension\Twig\TwigFormulaLoader\loadNode(), and sprintf.

Here is the call graph for this function:

◆ loadNode()

Assetic\Extension\Twig\TwigFormulaLoader::loadNode ( \Twig_Node $node )

private

Loads assets from the supplied node.

Parameters

\Twig_Node $node

Returns: array An array of asset formulae indexed by name

Definition at line 57 of file TwigFormulaLoader.php.

    {
        $formulae = array();
 
        if ($node instanceof AsseticNode) {
            $formulae[$node->getAttribute('name')] = array(
                $node->getAttribute('inputs'),
                $node->getAttribute('filters'),
                array(
                    'output'  => $node->getAttribute('asset')->getTargetPath(),
                    'name'    => $node->getAttribute('name'),
                    'debug'   => $node->getAttribute('debug'),
                    'combine' => $node->getAttribute('combine'),
                    'vars'    => $node->getAttribute('vars'),
                ),
            );
        } elseif ($node instanceof \Twig_Node_Expression_Function) {
            $name = $node->getAttribute('name');
 
            if ($this->twig->getFunction($name) instanceof AsseticFilterFunction) {
                $arguments = array();
                foreach ($node->getNode('arguments') as $argument) {
                    $arguments[] = eval('return '.$this->twig->compile($argument).';');
                }
 
                $invoker = $this->twig->getExtension('assetic')->getFilterInvoker($name);
 
                $inputs  = isset($arguments[0]) ? (array) $arguments[0] : array();
                $filters = $invoker->getFilters();
                $options = array_replace($invoker->getOptions(), isset($arguments[1]) ? $arguments[1] : array());
 
                if (!isset($options['name'])) {
                    $options['name'] = $invoker->getFactory()->generateAssetName($inputs, $filters, $options);
                }
 
                $formulae[$options['name']] = array($inputs, $filters, $options);
            }
        }
 
        foreach ($node as $child) {
            if ($child instanceof \Twig_Node) {
                $formulae += $this->loadNode($child);
            }
        }
 
        if ($node->hasAttribute('embedded_templates')) {
            foreach ($node->getAttribute('embedded_templates') as $child) {
                $formulae += $this->loadNode($child);
            }
        }
 
        return $formulae;
    }