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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* 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 <fabien@symfony.com>
*
* @internal
*/
class GetAttrNode extends Node
{
const PROPERTY_CALL = 1;
const METHOD_CALL = 2;
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'], ']'];
}
}
}