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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;
/**
* Represents a node in the AST.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Node
{
public $nodes = [];
public $attributes = [];
/**
* @param array $nodes An array of nodes
* @param array $attributes An array of attributes
*/
public function __construct(array $nodes = [], array $attributes = [])
{
$this->nodes = $nodes;
$this->attributes = $attributes;
}
/**
* @return string
*/
public function __toString()
{
$attributes = [];
foreach ($this->attributes as $name => $value) {
$attributes[] = sprintf('%s: %s', $name, str_replace("\n", '', var_export($value, true)));
}
$repr = [str_replace('Symfony\Component\ExpressionLanguage\Node\\', '', static::class).'('.implode(', ', $attributes)];
if (\count($this->nodes)) {
foreach ($this->nodes as $node) {
foreach (explode("\n", (string) $node) as $line) {
$repr[] = ' '.$line;
}
}
$repr[] = ')';
} else {
$repr[0] .= ')';
}
return implode("\n", $repr);
}
public function compile(Compiler $compiler)
{
foreach ($this->nodes as $node) {
$node->compile($compiler);
}
}
public function evaluate(array $functions, array $values)
{
$results = [];
foreach ($this->nodes as $node) {
$results[] = $node->evaluate($functions, $values);
}
return $results;
}
public function toArray()
{
throw new \BadMethodCallException(sprintf('Dumping a "%s" instance is not supported yet.', static::class));
}
public function dump()
{
$dump = '';
foreach ($this->toArray() as $v) {
$dump .= is_scalar($v) ? $v : $v->dump();
}
return $dump;
}
protected function dumpString(string $value)
{
return sprintf('"%s"', addcslashes($value, "\0\t\"\\"));
}
protected function isHash(array $value)
{
$expectedKey = 0;
foreach ($value as $key => $val) {
if ($key !== $expectedKey++) {
return true;
}
}
return false;
}
}
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