/**
* Constructor
*
* @param array $config An array of default values.
*/
public function __construct($config)
{
$this->config = $config;
ShortcodesTrait::setShortcodesClass($this);
// Set up Twig environment
$this->loader = new \Twig_Loader_Array([]);
$this->twig = new Twig\Environment($this->loader, ['use_strict_variables' => false]);
// Set up sandbox for parsing shortcodes
$this->policy = new \Twig_Sandbox_SecurityPolicy();
$this->twig->addExtension(new \Twig_Extension_Sandbox($this->policy, true));
$this->policy->setAllowedTags($this->loadShortcodes());
// Modify lexer to match special shortcode syntax
$lexer = new \Twig_Lexer($this->twig, array('tag_comment' => ['{#', '#}'], 'tag_block' => ['{{%', '%}}'], 'tag_variable' => ['{#', '#}'], 'interpolation' => ['#{', '}']));
$this->twig->setLexer($lexer);
}
/**
* Compile the node.
*
* @param \Twig_Compiler $compiler A Twig compiler instance.
*/
public function compile(\Twig_Compiler $compiler)
{
$name = $this->getAttribute('name');
$shortcode = $compiler->getEnvironment()->getShortcode($name);
$filter = $compiler->getEnvironment()->getShortcodeFilter($name);
$this->setAttribute('name', $name);
$this->setAttribute('type', 'shortcode');
$this->setAttribute('thing', $shortcode);
$this->setAttribute('needs_environment', $shortcode->needsEnvironment());
$this->setAttribute('needs_context', $shortcode->needsContext());
$this->setAttribute('arguments', $shortcode->getArguments());
if ($shortcode instanceof \Twig_FunctionCallableInterface || $shortcode instanceof GenericShortcode) {
$instance = ShortcodesTrait::getShortcodesClass();
$this->setAttribute('callable', $shortcode->getCallable());
}
if ($this->hasNode('node')) {
$body = $this->getNode('node');
if (!is_array($body)) {
$body = [$body];
}
$compiler->addDebugInfo($this)->write("ob_start();\n");
foreach ($body as $key => $node) {
$compiler->subcompile($node);
}
$compiler->write("\$body = ob_get_clean();\n");
}
if ($this->hasNode('arguments') && null !== $this->getNode('arguments')) {
$compiler->write("\$arguments = array(");
foreach ($this->getNode('arguments') as $key => $node) {
$compiler->string($key)->raw(" => ")->subcompile($node)->raw(", ");
}
$compiler->raw(");\n");
}
$compiler->write('$compiled = $context["__shortcodes"](')->string($this->tag)->raw(", \$body, \$arguments);\n")->write($filter ? '$compiled = ' : 'echo ');
$this->compileCallable($compiler);
$compiler->raw(";\n");
// Filter shortcode, if registered filters are present
if ($filter) {
$compiler->write('echo $context["__shortcodes_filter"](')->string($name)->raw(', $compiled, $context, $this->env)');
}
$compiler->raw(";\n")->write('unset($body, $arguments, $compiled);')->raw("\n");
}