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- <?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;
- public function __construct(NodeDefinition $node)
- {
- $this->node = $node;
- }
- /**
- * Marks the expression as being always used.
- *
- * @return $this
- */
- 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.
- *
- * @return $this
- */
- 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 $this
- */
- public function ifString()
- {
- $this->ifPart = function ($v) { return \is_string($v); };
- return $this;
- }
- /**
- * Tests if the value is null.
- *
- * @return $this
- */
- public function ifNull()
- {
- $this->ifPart = function ($v) { return null === $v; };
- return $this;
- }
- /**
- * Tests if the value is empty.
- *
- * @return ExprBuilder
- */
- public function ifEmpty()
- {
- $this->ifPart = function ($v) { return empty($v); };
- return $this;
- }
- /**
- * Tests if the value is an array.
- *
- * @return $this
- */
- public function ifArray()
- {
- $this->ifPart = function ($v) { return \is_array($v); };
- return $this;
- }
- /**
- * Tests if the value is in an array.
- *
- * @return $this
- */
- 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.
- *
- * @return $this
- */
- public function ifNotInArray(array $array)
- {
- $this->ifPart = function ($v) use ($array) { return !\in_array($v, $array, true); };
- return $this;
- }
- /**
- * Transforms variables of any type into an array.
- *
- * @return $this
- */
- public function castToArray()
- {
- $this->ifPart = function ($v) { return !\is_array($v); };
- $this->thenPart = function ($v) { return [$v]; };
- return $this;
- }
- /**
- * Sets the closure to run if the test pass.
- *
- * @return $this
- */
- public function then(\Closure $closure)
- {
- $this->thenPart = $closure;
- return $this;
- }
- /**
- * Sets a closure returning an empty array.
- *
- * @return $this
- */
- public function thenEmptyArray()
- {
- $this->thenPart = function ($v) { return []; };
- return $this;
- }
- /**
- * Sets a closure marking the value as invalid at processing time.
- *
- * if you want to add the value of the node in your message just use a %s placeholder.
- *
- * @return $this
- *
- * @throws \InvalidArgumentException
- */
- public function thenInvalid(string $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 processing time.
- *
- * @return $this
- *
- * @throws UnsetKeyException
- */
- public function thenUnset()
- {
- $this->thenPart = function ($v) { throw new UnsetKeyException('Unsetting key.'); };
- return $this;
- }
- /**
- * Returns the related node.
- *
- * @return NodeDefinition|ArrayNodeDefinition|VariableNodeDefinition
- *
- * @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 self) {
- $if = $expr->ifPart;
- $then = $expr->thenPart;
- $expressions[$k] = function ($v) use ($if, $then) {
- return $if($v) ? $then($v) : $v;
- };
- }
- }
- return $expressions;
- }
- }
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