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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\Validator\Mapping\Loader;
use Symfony\Component\Validator\Exception\MappingException;
use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Yaml\Yaml;
class YamlFileLoader extends FileLoader
{
/**
* An array of YAML class descriptions
* @val array
*/
protected $classes = null;
/**
* {@inheritDoc}
*/
public function loadClassMetadata(ClassMetadata $metadata)
{
if (null === $this->classes) {
$this->classes = Yaml::load($this->file);
// empty file
if (null === $this->classes) {
return false;
}
// not an array
if (!is_array($this->classes)) {
throw new \InvalidArgumentException(sprintf('The file "%s" must contain a YAML array.', $this->file));
}
if (isset($this->classes['namespaces'])) {
foreach ($this->classes['namespaces'] as $prefix => $namespace) {
$this->namespaces[$prefix] = $namespace;
}
unset($this->classes['namespaces']);
}
}
// TODO validation
if (isset($this->classes[$metadata->getClassName()])) {
$yaml = $this->classes[$metadata->getClassName()];
if (isset($yaml['constraints'])) {
foreach ($this->parseNodes($yaml['constraints']) as $constraint) {
$metadata->addConstraint($constraint);
}
}
if (isset($yaml['properties'])) {
foreach ($yaml['properties'] as $property => $constraints) {
foreach ($this->parseNodes($constraints) as $constraint) {
$metadata->addPropertyConstraint($property, $constraint);
}
}
}
if (isset($yaml['getters'])) {
foreach ($yaml['getters'] as $getter => $constraints) {
foreach ($this->parseNodes($constraints) as $constraint) {
$metadata->addGetterConstraint($getter, $constraint);
}
}
}
return true;
}
return false;
}
/**
* Parses a collection of YAML nodes
*
* @param array $nodes The YAML nodes
*
* @return array An array of values or Constraint instances
*/
protected function parseNodes(array $nodes)
{
$values = array();
foreach ($nodes as $name => $childNodes) {
if (is_numeric($name) && is_array($childNodes) && count($childNodes) == 1) {
$options = current($childNodes);
if (is_array($options)) {
$options = $this->parseNodes($options);
}
$values[] = $this->newConstraint(key($childNodes), $options);
} else {
if (is_array($childNodes)) {
$childNodes = $this->parseNodes($childNodes);
}
$values[$name] = $childNodes;
}
}
return $values;
}
}
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