171 lines
		
	
	
		
			4.5 KiB
		
	
	
	
		
			PHP
		
	
	
		
		
			
		
	
	
			171 lines
		
	
	
		
			4.5 KiB
		
	
	
	
		
			PHP
		
	
	
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								<?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 const OPERATORS = [
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								        '~' => '.',
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								        'and' => '&&',
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								        'or' => '||',
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								    ];
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								    private const 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(string $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(array $functions, array $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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