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Current File : //usr/share/php/Symfony4/Component/ExpressionLanguage/Node/GetAttrNode.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\ExpressionLanguage\Node;

use Symfony\Component\ExpressionLanguage\Compiler;

/**
 * @author Fabien Potencier <[email protected]>
 *
 * @internal
 */
class GetAttrNode extends Node
{
    public const PROPERTY_CALL = 1;
    public const METHOD_CALL = 2;
    public const ARRAY_CALL = 3;

    public function __construct(Node $node, Node $attribute, ArrayNode $arguments, int $type)
    {
        parent::__construct(
            ['node' => $node, 'attribute' => $attribute, 'arguments' => $arguments],
            ['type' => $type]
        );
    }

    public function compile(Compiler $compiler)
    {
        switch ($this->attributes['type']) {
            case self::PROPERTY_CALL:
                $compiler
                    ->compile($this->nodes['node'])
                    ->raw('->')
                    ->raw($this->nodes['attribute']->attributes['value'])
                ;
                break;

            case self::METHOD_CALL:
                $compiler
                    ->compile($this->nodes['node'])
                    ->raw('->')
                    ->raw($this->nodes['attribute']->attributes['value'])
                    ->raw('(')
                    ->compile($this->nodes['arguments'])
                    ->raw(')')
                ;
                break;

            case self::ARRAY_CALL:
                $compiler
                    ->compile($this->nodes['node'])
                    ->raw('[')
                    ->compile($this->nodes['attribute'])->raw(']')
                ;
                break;
        }
    }

    public function evaluate($functions, $values)
    {
        switch ($this->attributes['type']) {
            case self::PROPERTY_CALL:
                $obj = $this->nodes['node']->evaluate($functions, $values);
                if (!\is_object($obj)) {
                    throw new \RuntimeException('Unable to get a property on a non-object.');
                }

                $property = $this->nodes['attribute']->attributes['value'];

                return $obj->$property;

            case self::METHOD_CALL:
                $obj = $this->nodes['node']->evaluate($functions, $values);
                if (!\is_object($obj)) {
                    throw new \RuntimeException('Unable to get a property on a non-object.');
                }
                if (!\is_callable($toCall = [$obj, $this->nodes['attribute']->attributes['value']])) {
                    throw new \RuntimeException(sprintf('Unable to call method "%s" of object "%s".', $this->nodes['attribute']->attributes['value'], \get_class($obj)));
                }

                return $toCall(...array_values($this->nodes['arguments']->evaluate($functions, $values)));

            case self::ARRAY_CALL:
                $array = $this->nodes['node']->evaluate($functions, $values);
                if (!\is_array($array) && !$array instanceof \ArrayAccess) {
                    throw new \RuntimeException('Unable to get an item on a non-array.');
                }

                return $array[$this->nodes['attribute']->evaluate($functions, $values)];
        }
    }

    public function toArray()
    {
        switch ($this->attributes['type']) {
            case self::PROPERTY_CALL:
                return [$this->nodes['node'], '.', $this->nodes['attribute']];

            case self::METHOD_CALL:
                return [$this->nodes['node'], '.', $this->nodes['attribute'], '(', $this->nodes['arguments'], ')'];

            case self::ARRAY_CALL:
                return [$this->nodes['node'], '[', $this->nodes['attribute'], ']'];
        }
    }
}

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