188 lines
5.5 KiB
PHP
188 lines
5.5 KiB
PHP
<?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;
|
|
use Symfony\Component\ExpressionLanguage\SyntaxError;
|
|
|
|
/**
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* @internal
|
|
*/
|
|
class BinaryNode extends Node
|
|
{
|
|
private const OPERATORS = [
|
|
'~' => '.',
|
|
'and' => '&&',
|
|
'or' => '||',
|
|
];
|
|
|
|
private const FUNCTIONS = [
|
|
'**' => 'pow',
|
|
'..' => 'range',
|
|
'in' => 'in_array',
|
|
'not in' => '!in_array',
|
|
];
|
|
|
|
public function __construct(string $operator, Node $left, Node $right)
|
|
{
|
|
parent::__construct(
|
|
['left' => $left, 'right' => $right],
|
|
['operator' => $operator]
|
|
);
|
|
}
|
|
|
|
public function compile(Compiler $compiler)
|
|
{
|
|
$operator = $this->attributes['operator'];
|
|
|
|
if ('matches' == $operator) {
|
|
if ($this->nodes['right'] instanceof ConstantNode) {
|
|
$this->evaluateMatches($this->nodes['right']->evaluate([], []), '');
|
|
}
|
|
|
|
$compiler
|
|
->raw('(static function ($regexp, $str) { set_error_handler(function ($t, $m) use ($regexp, $str) { throw new \Symfony\Component\ExpressionLanguage\SyntaxError(sprintf(\'Regexp "%s" passed to "matches" is not valid\', $regexp).substr($m, 12)); }); try { return preg_match($regexp, (string) $str); } finally { restore_error_handler(); } })(')
|
|
->compile($this->nodes['right'])
|
|
->raw(', ')
|
|
->compile($this->nodes['left'])
|
|
->raw(')')
|
|
;
|
|
|
|
return;
|
|
}
|
|
|
|
if (isset(self::FUNCTIONS[$operator])) {
|
|
$compiler
|
|
->raw(sprintf('%s(', self::FUNCTIONS[$operator]))
|
|
->compile($this->nodes['left'])
|
|
->raw(', ')
|
|
->compile($this->nodes['right'])
|
|
->raw(')')
|
|
;
|
|
|
|
return;
|
|
}
|
|
|
|
if (isset(self::OPERATORS[$operator])) {
|
|
$operator = self::OPERATORS[$operator];
|
|
}
|
|
|
|
$compiler
|
|
->raw('(')
|
|
->compile($this->nodes['left'])
|
|
->raw(' ')
|
|
->raw($operator)
|
|
->raw(' ')
|
|
->compile($this->nodes['right'])
|
|
->raw(')')
|
|
;
|
|
}
|
|
|
|
public function evaluate(array $functions, array $values)
|
|
{
|
|
$operator = $this->attributes['operator'];
|
|
$left = $this->nodes['left']->evaluate($functions, $values);
|
|
|
|
if (isset(self::FUNCTIONS[$operator])) {
|
|
$right = $this->nodes['right']->evaluate($functions, $values);
|
|
|
|
if ('not in' === $operator) {
|
|
return !\in_array($left, $right);
|
|
}
|
|
$f = self::FUNCTIONS[$operator];
|
|
|
|
return $f($left, $right);
|
|
}
|
|
|
|
switch ($operator) {
|
|
case 'or':
|
|
case '||':
|
|
return $left || $this->nodes['right']->evaluate($functions, $values);
|
|
case 'and':
|
|
case '&&':
|
|
return $left && $this->nodes['right']->evaluate($functions, $values);
|
|
}
|
|
|
|
$right = $this->nodes['right']->evaluate($functions, $values);
|
|
|
|
switch ($operator) {
|
|
case '|':
|
|
return $left | $right;
|
|
case '^':
|
|
return $left ^ $right;
|
|
case '&':
|
|
return $left & $right;
|
|
case '==':
|
|
return $left == $right;
|
|
case '===':
|
|
return $left === $right;
|
|
case '!=':
|
|
return $left != $right;
|
|
case '!==':
|
|
return $left !== $right;
|
|
case '<':
|
|
return $left < $right;
|
|
case '>':
|
|
return $left > $right;
|
|
case '>=':
|
|
return $left >= $right;
|
|
case '<=':
|
|
return $left <= $right;
|
|
case 'not in':
|
|
return !\in_array($left, $right);
|
|
case 'in':
|
|
return \in_array($left, $right);
|
|
case '+':
|
|
return $left + $right;
|
|
case '-':
|
|
return $left - $right;
|
|
case '~':
|
|
return $left.$right;
|
|
case '*':
|
|
return $left * $right;
|
|
case '/':
|
|
if (0 == $right) {
|
|
throw new \DivisionByZeroError('Division by zero.');
|
|
}
|
|
|
|
return $left / $right;
|
|
case '%':
|
|
if (0 == $right) {
|
|
throw new \DivisionByZeroError('Modulo by zero.');
|
|
}
|
|
|
|
return $left % $right;
|
|
case 'matches':
|
|
return $this->evaluateMatches($right, $left);
|
|
}
|
|
}
|
|
|
|
public function toArray()
|
|
{
|
|
return ['(', $this->nodes['left'], ' '.$this->attributes['operator'].' ', $this->nodes['right'], ')'];
|
|
}
|
|
|
|
private function evaluateMatches(string $regexp, ?string $str): int
|
|
{
|
|
set_error_handler(function ($t, $m) use ($regexp) {
|
|
throw new SyntaxError(sprintf('Regexp "%s" passed to "matches" is not valid', $regexp).substr($m, 12));
|
|
});
|
|
try {
|
|
return preg_match($regexp, (string) $str);
|
|
} finally {
|
|
restore_error_handler();
|
|
}
|
|
}
|
|
}
|