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<?php

/**
 * This file is part of the Lean Mapper library (http://www.leanmapper.com)
 *
 * Copyright (c) 2013 Vojtěch Kohout (aka Tharos)
 *
 * For the full copyright and license information, please view the file
 * license-mit.txt that was distributed with this source code.
 */

namespace LeanMapper\Reflection;

use LeanMapper\Exception\InvalidAnnotationException;

/**
 * Set of property access methods (given in useMethods flag)
 *
 * @author Vojtěch Kohout
 */
class PropertyMethods
{

    /** @var string */
    private $getter;

    /** @var string */
    private $setter;


    /**
     * @param string $propertyName
     * @param bool $isWritable
     * @param string $definition
     * @throws InvalidAnnotationException
     */
    public function __construct($propertyName, $isWritable, $definition)
    {
        $ucName = ucfirst($propertyName);
        $this->getter = 'get' . $ucName;
        if ($isWritable) {
            $this->setter = 'set' . $ucName;
        }
        $counter = 0;
        foreach (preg_split('#\s*\|\s*#', trim($definition)) as $method) {
            $counter++;
            if ($counter > 2) {
                throw new InvalidAnnotationException('Property methods cannot have more than two parts.');
            }
            if ($method === '') {
                continue;
            }
            if (!preg_match('#^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$#', $method)) {
                throw new InvalidAnnotationException("Malformed access method name given: '$method'.");
            }
            if ($counter === 1) {
                $this->getter = $method;
            } else { // $counter === 2
                if (!$isWritable) {
                    throw new InvalidAnnotationException('Property methods can have one part only in read-only properties.');
                }
                $this->setter = $method;
            }
        }
    }

    /**
     * Gets getter method
     *
     * @return string|null
     */
    public function getGetter()
    {
        return $this->getter;
    }

    /**
     * Gets setter method
     *
     * @return string|null
     */
    public function getSetter()
    {
        return $this->setter;
    }

}