Lechimp\Dicto\Graph\Predicate\_PropertyMatches

Complexity

Total Complexity

7

Size/Duplication

Total Lines	53
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

59.09%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	3
A	_compile()	0	10	2
A	compile_to_source()	0	8	1
A	for_types()	0	3	1

<?php
/******************************************************************************
 * An implementation of dicto (scg.unibe.ch/dicto) in and for PHP.
 * 
 * Copyright (c) 2016 Richard Klees <richard.klees@rwth-aachen.de>
 *
 * This software is licensed under The MIT License. You should have received 
 * a copy of the license along with the code.
 */

namespace Lechimp\Dicto\Graph\Predicate;

use Lechimp\Dicto\Graph\Predicate;
use Lechimp\Dicto\Graph\Entity;

/**
 * A predicate that is true if a property of the entity matches a regex.
 */
class _PropertyMatches extends Predicate {
    /**
     * @var string
     */
    protected $name;

    /**
     * @var string
     */
    protected $regexp;

    public function __construct($name, $regexp) {
        assert('is_string($name)');
        if (!is_string($regexp) || @preg_match("%^$regexp\$%", "") === false) {
            throw new \InvalidArgumentException("'%^$regexp\$%' is no valid regex.");
        }
        $this->name = $name;
        $this->regexp = $regexp;
    }

    /**
     * @inheritdocs
     */
    public function _compile() {
        $name = $this->name;
        $regexp = $this->regexp;
        return function(Entity $e) use ($name, $regexp) { 
            if (!$e->has_property($name)) {
                return false;
            }
            return preg_match("%^$regexp\$%", $e->property($name)) == 1;
        };
    }

    /**
     * @inheritdocs
     */
    public function compile_to_source(array &$custom_closures) {
        $name = $this->name;
        $regexp = $this->regexp;
        return
            "   \$value = \n".
            "       \$e->has_property(\"$name\")\n".
            "       && (preg_match(\"%^$regexp\\\$%\", \$e->property(\"$name\")) == 1);\n";
    }

    /**
     * @inheritdocs
     */
    public function for_types(array $existing_types) {
        return $existing_types;
    }
}