<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Config\Definition\Builder; use Symfony\Component\Config\Definition\Exception\UnsetKeyException; /** * This class builds an if expression. * * @author Johannes M. Schmitt <schmittjoh@gmail.com> * @author Christophe Coevoet <stof@notk.org> */ class ExprBuilder { protected $node; public $ifPart; public $thenPart; /** * Constructor * * @param NodeDefinition $node The related node */ public function __construct(NodeDefinition $node) { $this->node = $node; } /** * Marks the expression as being always used. * * @param \Closure $then * * @return ExprBuilder */ public function always(\Closure $then = null) { $this->ifPart = function ($v) { return true; }; if (null !== $then) { $this->thenPart = $then; } return $this; } /** * Sets a closure to use as tests. * * The default one tests if the value is true. * * @param \Closure $closure * * @return ExprBuilder */ public function ifTrue(\Closure $closure = null) { if (null === $closure) { $closure = function ($v) { return true === $v; }; } $this->ifPart = $closure; return $this; } /** * Tests if the value is a string. * * @return ExprBuilder */ public function ifString() { $this->ifPart = function ($v) { return is_string($v); }; return $this; } /** * Tests if the value is null. * * @return ExprBuilder */ public function ifNull() { $this->ifPart = function ($v) { return null === $v; }; return $this; } /** * Tests if the value is an array. * * @return ExprBuilder */ public function ifArray() { $this->ifPart = function ($v) { return is_array($v); }; return $this; } /** * Tests if the value is in an array. * * @param array $array * * @return ExprBuilder */ public function ifInArray(array $array) { $this->ifPart = function ($v) use ($array) { return in_array($v, $array, true); }; return $this; } /** * Tests if the value is not in an array. * * @param array $array * * @return ExprBuilder */ public function ifNotInArray(array $array) { $this->ifPart = function ($v) use ($array) { return !in_array($v, $array, true); }; return $this; } /** * Sets the closure to run if the test pass. * * @param \Closure $closure * * @return ExprBuilder */ public function then(\Closure $closure) { $this->thenPart = $closure; return $this; } /** * Sets a closure returning an empty array. * * @return ExprBuilder */ public function thenEmptyArray() { $this->thenPart = function ($v) { return array(); }; return $this; } /** * Sets a closure marking the value as invalid at validation time. * * if you want to add the value of the node in your message just use a %s placeholder. * * @param string $message * * @return ExprBuilder * * @throws \InvalidArgumentException */ public function thenInvalid($message) { $this->thenPart = function ($v) use ($message) {throw new \InvalidArgumentException(sprintf($message, json_encode($v))); }; return $this; } /** * Sets a closure unsetting this key of the array at validation time. * * @return ExprBuilder * * @throws UnsetKeyException */ public function thenUnset() { $this->thenPart = function ($v) { throw new UnsetKeyException('Unsetting key'); }; return $this; } /** * Returns the related node * * @return NodeDefinition * * @throws \RuntimeException */ public function end() { if (null === $this->ifPart) { throw new \RuntimeException('You must specify an if part.'); } if (null === $this->thenPart) { throw new \RuntimeException('You must specify a then part.'); } return $this->node; } /** * Builds the expressions. * * @param ExprBuilder[] $expressions An array of ExprBuilder instances to build * * @return array */ public static function buildExpressions(array $expressions) { foreach ($expressions as $k => $expr) { if ($expr instanceof ExprBuilder) { $expressions[$k] = function ($v) use ($expr) { return call_user_func($expr->ifPart, $v) ? call_user_func($expr->thenPart, $v) : $v; }; } } return $expressions; } }