59 lines
1.5 KiB
PHP
59 lines
1.5 KiB
PHP
<?php
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namespace Faker;
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/**
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* Proxy for other generators, to return only unique values. Works with
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* Faker\Generator\Base->unique()
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*/
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class UniqueGenerator
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{
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protected $generator;
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protected $maxRetries;
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protected $uniques = array();
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/**
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* @param Generator $generator
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* @param integer $maxRetries
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*/
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public function __construct(Generator $generator, $maxRetries = 10000)
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{
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$this->generator = $generator;
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$this->maxRetries = $maxRetries;
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}
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/**
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* Catch and proxy all generator calls but return only unique values
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* @param string $attribute
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* @return mixed
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*/
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public function __get($attribute)
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{
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return $this->__call($attribute, array());
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}
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/**
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* Catch and proxy all generator calls with arguments but return only unique values
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* @param string $name
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* @param array $arguments
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* @return mixed
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*/
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public function __call($name, $arguments)
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{
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if (!isset($this->uniques[$name])) {
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$this->uniques[$name] = array();
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}
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$i = 0;
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do {
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$res = call_user_func_array(array($this->generator, $name), $arguments);
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$i++;
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if ($i > $this->maxRetries) {
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throw new \OverflowException(sprintf('Maximum retries of %d reached without finding a unique value', $this->maxRetries));
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}
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} while (array_key_exists(serialize($res), $this->uniques[$name]));
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$this->uniques[$name][serialize($res)]= null;
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return $res;
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}
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}
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