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Fabien Potencier
97 lines
3.2 KiB
PHP
97 lines
3.2 KiB
PHP
<?php
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/*
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* This file is part of Twig.
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*
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* (c) Fabien Potencier
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Twig\ExpressionParser\Infix;
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use Twig\Attribute\FirstClassTwigCallableReady;
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use Twig\Error\SyntaxError;
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use Twig\ExpressionParser\AbstractExpressionParser;
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use Twig\ExpressionParser\ExpressionParserDescriptionInterface;
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use Twig\ExpressionParser\InfixAssociativity;
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use Twig\ExpressionParser\InfixExpressionParserInterface;
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use Twig\Node\EmptyNode;
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use Twig\Node\Expression\AbstractExpression;
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use Twig\Node\Expression\MacroReferenceExpression;
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use Twig\Node\Expression\NameExpression;
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use Twig\Parser;
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use Twig\Token;
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/**
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* @internal
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*/
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final class FunctionExpressionParser extends AbstractExpressionParser implements InfixExpressionParserInterface, ExpressionParserDescriptionInterface
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{
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use ArgumentsTrait;
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private $readyNodes = [];
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public function parse(Parser $parser, AbstractExpression $expr, Token $token): AbstractExpression
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{
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$line = $token->getLine();
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if (!$expr instanceof NameExpression) {
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throw new SyntaxError('Function name must be an identifier.', $line, $parser->getStream()->getSourceContext());
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}
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$name = $expr->getAttribute('name');
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if (null !== $alias = $parser->getImportedSymbol('function', $name)) {
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return new MacroReferenceExpression($alias['node']->getNode('var'), $alias['name'], $this->parseCallableArguments($parser, $line, false), $line);
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}
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$args = $this->parseNamedArguments($parser, false);
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$function = $parser->getFunction($name, $line);
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if ($function->getParserCallable()) {
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$fakeNode = new EmptyNode($line);
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$fakeNode->setSourceContext($parser->getStream()->getSourceContext());
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$node = ($function->getParserCallable())($parser, $fakeNode, $args, $line);
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// remember the original function name so the sandbox can enforce
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// the `allowedFunctions` allow-list even though the parser callable
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// returned a specialized node (e.g. `parent`, `block`, `attribute`).
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$node->setAttribute('sandboxed_function_name', $name);
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return $node;
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}
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if (!isset($this->readyNodes[$class = $function->getNodeClass()])) {
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$this->readyNodes[$class] = (bool) (new \ReflectionClass($class))->getConstructor()->getAttributes(FirstClassTwigCallableReady::class);
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}
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if (!$ready = $this->readyNodes[$class]) {
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trigger_deprecation('twig/twig', '3.12', 'Twig node "%s" is not marked as ready for passing a "TwigFunction" in the constructor instead of its name; please update your code and then add #[FirstClassTwigCallableReady] attribute to the constructor.', $class);
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}
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return new $class($ready ? $function : $function->getName(), $args, $line);
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}
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public function getName(): string
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{
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return '(';
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}
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public function getDescription(): string
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{
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return 'Twig function call';
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}
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public function getPrecedence(): int
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{
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return 512;
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}
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public function getAssociativity(): InfixAssociativity
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{
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return InfixAssociativity::Left;
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}
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}
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