171 lines
4.5 KiB
PHP
171 lines
4.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\ExpressionLanguage\Node;
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use Symfony\Component\ExpressionLanguage\Compiler;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @internal
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*/
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class BinaryNode extends Node
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{
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private static $operators = [
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'~' => '.',
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'and' => '&&',
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'or' => '||',
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];
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private static $functions = [
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'**' => 'pow',
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'..' => 'range',
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'in' => 'in_array',
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'not in' => '!in_array',
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];
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public function __construct($operator, Node $left, Node $right)
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{
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parent::__construct(
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['left' => $left, 'right' => $right],
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['operator' => $operator]
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);
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}
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public function compile(Compiler $compiler)
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{
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$operator = $this->attributes['operator'];
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if ('matches' == $operator) {
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$compiler
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->raw('preg_match(')
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->compile($this->nodes['right'])
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->raw(', ')
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->compile($this->nodes['left'])
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->raw(')')
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;
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return;
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}
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if (isset(self::$functions[$operator])) {
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$compiler
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->raw(sprintf('%s(', self::$functions[$operator]))
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->compile($this->nodes['left'])
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->raw(', ')
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->compile($this->nodes['right'])
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->raw(')')
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;
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return;
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}
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if (isset(self::$operators[$operator])) {
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$operator = self::$operators[$operator];
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}
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$compiler
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->raw('(')
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->compile($this->nodes['left'])
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->raw(' ')
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->raw($operator)
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->raw(' ')
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->compile($this->nodes['right'])
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->raw(')')
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;
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}
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public function evaluate($functions, $values)
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{
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$operator = $this->attributes['operator'];
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$left = $this->nodes['left']->evaluate($functions, $values);
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if (isset(self::$functions[$operator])) {
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$right = $this->nodes['right']->evaluate($functions, $values);
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if ('not in' === $operator) {
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return !\in_array($left, $right);
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}
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$f = self::$functions[$operator];
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return $f($left, $right);
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}
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switch ($operator) {
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case 'or':
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case '||':
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return $left || $this->nodes['right']->evaluate($functions, $values);
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case 'and':
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case '&&':
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return $left && $this->nodes['right']->evaluate($functions, $values);
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}
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$right = $this->nodes['right']->evaluate($functions, $values);
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switch ($operator) {
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case '|':
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return $left | $right;
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case '^':
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return $left ^ $right;
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case '&':
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return $left & $right;
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case '==':
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return $left == $right;
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case '===':
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return $left === $right;
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case '!=':
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return $left != $right;
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case '!==':
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return $left !== $right;
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case '<':
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return $left < $right;
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case '>':
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return $left > $right;
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case '>=':
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return $left >= $right;
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case '<=':
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return $left <= $right;
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case 'not in':
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return !\in_array($left, $right);
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case 'in':
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return \in_array($left, $right);
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case '+':
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return $left + $right;
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case '-':
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return $left - $right;
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case '~':
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return $left.$right;
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case '*':
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return $left * $right;
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case '/':
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if (0 == $right) {
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throw new \DivisionByZeroError('Division by zero.');
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}
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return $left / $right;
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case '%':
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if (0 == $right) {
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throw new \DivisionByZeroError('Modulo by zero.');
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}
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return $left % $right;
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case 'matches':
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return preg_match($right, $left);
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}
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}
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public function toArray()
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{
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return ['(', $this->nodes['left'], ' '.$this->attributes['operator'].' ', $this->nodes['right'], ')'];
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}
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}
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