File "OptimizerNodeVisitor.php"
Full Path: /home/warrior1/public_html/plugins/mailpoet/vendor-prefixed/twig/twig/src/NodeVisitor/OptimizerNodeVisitor.php
File size: 4.49 KB
MIME-type: text/x-php
Charset: utf-8
<?php
namespace MailPoetVendor\Twig\NodeVisitor;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Twig\Environment;
use MailPoetVendor\Twig\Node\BlockReferenceNode;
use MailPoetVendor\Twig\Node\Expression\BlockReferenceExpression;
use MailPoetVendor\Twig\Node\Expression\ConstantExpression;
use MailPoetVendor\Twig\Node\Expression\FilterExpression;
use MailPoetVendor\Twig\Node\Expression\FunctionExpression;
use MailPoetVendor\Twig\Node\Expression\GetAttrExpression;
use MailPoetVendor\Twig\Node\Expression\NameExpression;
use MailPoetVendor\Twig\Node\Expression\ParentExpression;
use MailPoetVendor\Twig\Node\ForNode;
use MailPoetVendor\Twig\Node\IncludeNode;
use MailPoetVendor\Twig\Node\Node;
use MailPoetVendor\Twig\Node\PrintNode;
final class OptimizerNodeVisitor implements NodeVisitorInterface
{
public const OPTIMIZE_ALL = -1;
public const OPTIMIZE_NONE = 0;
public const OPTIMIZE_FOR = 2;
public const OPTIMIZE_RAW_FILTER = 4;
private $loops = [];
private $loopsTargets = [];
private $optimizers;
public function __construct(int $optimizers = -1)
{
if ($optimizers > (self::OPTIMIZE_FOR | self::OPTIMIZE_RAW_FILTER)) {
throw new \InvalidArgumentException(\sprintf('Optimizer mode "%s" is not valid.', $optimizers));
}
$this->optimizers = $optimizers;
}
public function enterNode(Node $node, Environment $env) : Node
{
if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
$this->enterOptimizeFor($node, $env);
}
return $node;
}
public function leaveNode(Node $node, Environment $env) : ?Node
{
if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
$this->leaveOptimizeFor($node, $env);
}
if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) {
$node = $this->optimizeRawFilter($node, $env);
}
$node = $this->optimizePrintNode($node, $env);
return $node;
}
private function optimizePrintNode(Node $node, Environment $env) : Node
{
if (!$node instanceof PrintNode) {
return $node;
}
$exprNode = $node->getNode('expr');
if ($exprNode instanceof BlockReferenceExpression || $exprNode instanceof ParentExpression) {
$exprNode->setAttribute('output', \true);
return $exprNode;
}
return $node;
}
private function optimizeRawFilter(Node $node, Environment $env) : Node
{
if ($node instanceof FilterExpression && 'raw' == $node->getNode('filter')->getAttribute('value')) {
return $node->getNode('node');
}
return $node;
}
private function enterOptimizeFor(Node $node, Environment $env) : void
{
if ($node instanceof ForNode) {
// disable the loop variable by default
$node->setAttribute('with_loop', \false);
\array_unshift($this->loops, $node);
\array_unshift($this->loopsTargets, $node->getNode('value_target')->getAttribute('name'));
\array_unshift($this->loopsTargets, $node->getNode('key_target')->getAttribute('name'));
} elseif (!$this->loops) {
// we are outside a loop
return;
} elseif ($node instanceof NameExpression && 'loop' === $node->getAttribute('name')) {
$node->setAttribute('always_defined', \true);
$this->addLoopToCurrent();
} elseif ($node instanceof NameExpression && \in_array($node->getAttribute('name'), $this->loopsTargets)) {
$node->setAttribute('always_defined', \true);
} elseif ($node instanceof BlockReferenceNode || $node instanceof BlockReferenceExpression) {
$this->addLoopToCurrent();
} elseif ($node instanceof IncludeNode && !$node->getAttribute('only')) {
$this->addLoopToAll();
} elseif ($node instanceof FunctionExpression && 'include' === $node->getAttribute('name') && (!$node->getNode('arguments')->hasNode('with_context') || \false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value'))) {
$this->addLoopToAll();
} elseif ($node instanceof GetAttrExpression && (!$node->getNode('attribute') instanceof ConstantExpression || 'parent' === $node->getNode('attribute')->getAttribute('value')) && (\true === $this->loops[0]->getAttribute('with_loop') || $node->getNode('node') instanceof NameExpression && 'loop' === $node->getNode('node')->getAttribute('name'))) {
$this->addLoopToAll();
}
}
private function leaveOptimizeFor(Node $node, Environment $env) : void
{
if ($node instanceof ForNode) {
\array_shift($this->loops);
\array_shift($this->loopsTargets);
\array_shift($this->loopsTargets);
}
}
private function addLoopToCurrent() : void
{
$this->loops[0]->setAttribute('with_loop', \true);
}
private function addLoopToAll() : void
{
foreach ($this->loops as $loop) {
$loop->setAttribute('with_loop', \true);
}
}
public function getPriority() : int
{
return 255;
}
}