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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\ArrayNode;
use Symfony\Component\Config\Definition\PrototypedArrayNode;
use Symfony\Component\Config\Definition\Exception\InvalidDefinitionException;
/**
* This class provides a fluent interface for defining an array node.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinitionInterface
{
protected $performDeepMerging = true;
protected $ignoreExtraKeys = false;
protected $children = array();
protected $prototype;
protected $atLeastOne = false;
protected $allowNewKeys = true;
protected $key;
protected $removeKeyItem;
protected $addDefaults = false;
protected $addDefaultChildren = false;
protected $nodeBuilder;
protected $normalizeKeys = true;
/**
* {@inheritdoc}
*/
public function __construct($name, NodeParentInterface $parent = null)
{
parent::__construct($name, $parent);
$this->nullEquivalent = array();
$this->trueEquivalent = array();
}
/**
* Sets a custom children builder.
*
* @param NodeBuilder $builder A custom NodeBuilder
*/
public function setBuilder(NodeBuilder $builder)
{
$this->nodeBuilder = $builder;
}
/**
* Returns a builder to add children nodes.
*
* @return NodeBuilder
*/
public function children()
{
return $this->getNodeBuilder();
}
/**
* Sets a prototype for child nodes.
*
* @param string $type the type of node
*
* @return NodeDefinition
*/
public function prototype($type)
{
return $this->prototype = $this->getNodeBuilder()->node(null, $type)->setParent($this);
}
/**
* Adds the default value if the node is not set in the configuration.
*
* This method is applicable to concrete nodes only (not to prototype nodes).
* If this function has been called and the node is not set during the finalization
* phase, it's default value will be derived from its children default values.
*
* @return ArrayNodeDefinition
*/
public function addDefaultsIfNotSet()
{
$this->addDefaults = true;
return $this;
}
/**
* Adds children with a default value when none are defined.
*
* @param int|string|array|null $children The number of children|The child name|The children names to be added
*
* This method is applicable to prototype nodes only.
*
* @return ArrayNodeDefinition
*/
public function addDefaultChildrenIfNoneSet($children = null)
{
$this->addDefaultChildren = $children;
return $this;
}
/**
* Requires the node to have at least one element.
*
* This method is applicable to prototype nodes only.
*
* @return ArrayNodeDefinition
*/
public function requiresAtLeastOneElement()
{
$this->atLeastOne = true;
return $this;
}
/**
* Disallows adding news keys in a subsequent configuration.
*
* If used all keys have to be defined in the same configuration file.
*
* @return ArrayNodeDefinition
*/
public function disallowNewKeysInSubsequentConfigs()
{
$this->allowNewKeys = false;
return $this;
}
/**
* Sets a normalization rule for XML configurations.
*
* @param string $singular The key to remap
* @param string $plural The plural of the key for irregular plurals
*
* @return ArrayNodeDefinition
*/
public function fixXmlConfig($singular, $plural = null)
{
$this->normalization()->remap($singular, $plural);
return $this;
}
/**
* Sets the attribute which value is to be used as key.
*
* This is useful when you have an indexed array that should be an
* associative array. You can select an item from within the array
* to be the key of the particular item. For example, if "id" is the
* "key", then:
*
* array(
* array('id' => 'my_name', 'foo' => 'bar'),
* );
*
* becomes
*
* array(
* 'my_name' => array('foo' => 'bar'),
* );
*
* If you'd like "'id' => 'my_name'" to still be present in the resulting
* array, then you can set the second argument of this method to false.
*
* This method is applicable to prototype nodes only.
*
* @param string $name The name of the key
* @param bool $removeKeyItem Whether or not the key item should be removed.
*
* @return ArrayNodeDefinition
*/
public function useAttributeAsKey($name, $removeKeyItem = true)
{
$this->key = $name;
$this->removeKeyItem = $removeKeyItem;
return $this;
}
/**
* Sets whether the node can be unset.
*
* @param bool $allow
*
* @return ArrayNodeDefinition
*/
public function canBeUnset($allow = true)
{
$this->merge()->allowUnset($allow);
return $this;
}
/**
* Adds an "enabled" boolean to enable the current section.
*
* By default, the section is disabled. If any configuration is specified then
* the node will be automatically enabled:
*
* enableableArrayNode: {enabled: true, ...} # The config is enabled & default values get overridden
* enableableArrayNode: ~ # The config is enabled & use the default values
* enableableArrayNode: true # The config is enabled & use the default values
* enableableArrayNode: {other: value, ...} # The config is enabled & default values get overridden
* enableableArrayNode: {enabled: false, ...} # The config is disabled
* enableableArrayNode: false # The config is disabled
*
* @return ArrayNodeDefinition
*/
public function canBeEnabled()
{
$this
->addDefaultsIfNotSet()
->treatFalseLike(array('enabled' => false))
->treatTrueLike(array('enabled' => true))
->treatNullLike(array('enabled' => true))
->beforeNormalization()
->ifArray()
->then(function ($v) {
$v['enabled'] = isset($v['enabled']) ? $v['enabled'] : true;
return $v;
})
->end()
->children()
->booleanNode('enabled')
->defaultFalse()
;
return $this;
}
/**
* Adds an "enabled" boolean to enable the current section.
*
* By default, the section is enabled.
*
* @return ArrayNodeDefinition
*/
public function canBeDisabled()
{
$this
->addDefaultsIfNotSet()
->treatFalseLike(array('enabled' => false))
->treatTrueLike(array('enabled' => true))
->treatNullLike(array('enabled' => true))
->children()
->booleanNode('enabled')
->defaultTrue()
;
return $this;
}
/**
* Disables the deep merging of the node.
*
* @return ArrayNodeDefinition
*/
public function performNoDeepMerging()
{
$this->performDeepMerging = false;
return $this;
}
/**
* Allows extra config keys to be specified under an array without
* throwing an exception.
*
* Those config values are simply ignored. This should be used only
* in special cases where you want to send an entire configuration
* array through a special tree that processes only part of the array.
*
* @return ArrayNodeDefinition
*/
public function ignoreExtraKeys()
{
$this->ignoreExtraKeys = true;
return $this;
}
/**
* Sets key normalization.
*
* @param bool $bool Whether to enable key normalization
*
* @return ArrayNodeDefinition
*/
public function normalizeKeys($bool)
{
$this->normalizeKeys = (bool) $bool;
return $this;
}
/**
* Appends a node definition.
*
* $node = new ArrayNodeDefinition()
* ->children()
* ->scalarNode('foo')->end()
* ->scalarNode('baz')->end()
* ->end()
* ->append($this->getBarNodeDefinition())
* ;
*
* @param NodeDefinition $node A NodeDefinition instance
*
* @return ArrayNodeDefinition This node
*/
public function append(NodeDefinition $node)
{
$this->children[$node->name] = $node->setParent($this);
return $this;
}
/**
* Returns a node builder to be used to add children and prototype.
*
* @return NodeBuilder The node builder
*/
protected function getNodeBuilder()
{
if (null === $this->nodeBuilder) {
$this->nodeBuilder = new NodeBuilder();
}
return $this->nodeBuilder->setParent($this);
}
/**
* {@inheritdoc}
*/
protected function createNode()
{
if (null === $this->prototype) {
$node = new ArrayNode($this->name, $this->parent);
$this->validateConcreteNode($node);
$node->setAddIfNotSet($this->addDefaults);
foreach ($this->children as $child) {
$child->parent = $node;
$node->addChild($child->getNode());
}
} else {
$node = new PrototypedArrayNode($this->name, $this->parent);
$this->validatePrototypeNode($node);
if (null !== $this->key) {
$node->setKeyAttribute($this->key, $this->removeKeyItem);
}
if (true === $this->atLeastOne) {
$node->setMinNumberOfElements(1);
}
if ($this->default) {
$node->setDefaultValue($this->defaultValue);
}
if (false !== $this->addDefaultChildren) {
$node->setAddChildrenIfNoneSet($this->addDefaultChildren);
if ($this->prototype instanceof static && null === $this->prototype->prototype) {
$this->prototype->addDefaultsIfNotSet();
}
}
$this->prototype->parent = $node;
$node->setPrototype($this->prototype->getNode());
}
$node->setAllowNewKeys($this->allowNewKeys);
$node->addEquivalentValue(null, $this->nullEquivalent);
$node->addEquivalentValue(true, $this->trueEquivalent);
$node->addEquivalentValue(false, $this->falseEquivalent);
$node->setPerformDeepMerging($this->performDeepMerging);
$node->setRequired($this->required);
$node->setIgnoreExtraKeys($this->ignoreExtraKeys);
$node->setNormalizeKeys($this->normalizeKeys);
if (null !== $this->normalization) {
$node->setNormalizationClosures($this->normalization->before);
$node->setXmlRemappings($this->normalization->remappings);
}
if (null !== $this->merge) {
$node->setAllowOverwrite($this->merge->allowOverwrite);
$node->setAllowFalse($this->merge->allowFalse);
}
if (null !== $this->validation) {
$node->setFinalValidationClosures($this->validation->rules);
}
return $node;
}
/**
* Validate the configuration of a concrete node.
*
* @param ArrayNode $node The related node
*
* @throws InvalidDefinitionException
*/
protected function validateConcreteNode(ArrayNode $node)
{
$path = $node->getPath();
if (null !== $this->key) {
throw new InvalidDefinitionException(
sprintf('->useAttributeAsKey() is not applicable to concrete nodes at path "%s"', $path)
);
}
if (true === $this->atLeastOne) {
throw new InvalidDefinitionException(
sprintf('->requiresAtLeastOneElement() is not applicable to concrete nodes at path "%s"', $path)
);
}
if ($this->default) {
throw new InvalidDefinitionException(
sprintf('->defaultValue() is not applicable to concrete nodes at path "%s"', $path)
);
}
if (false !== $this->addDefaultChildren) {
throw new InvalidDefinitionException(
sprintf('->addDefaultChildrenIfNoneSet() is not applicable to concrete nodes at path "%s"', $path)
);
}
}
/**
* Validate the configuration of a prototype node.
*
* @param PrototypedArrayNode $node The related node
*
* @throws InvalidDefinitionException
*/
protected function validatePrototypeNode(PrototypedArrayNode $node)
{
$path = $node->getPath();
if ($this->addDefaults) {
throw new InvalidDefinitionException(
sprintf('->addDefaultsIfNotSet() is not applicable to prototype nodes at path "%s"', $path)
);
}
if (false !== $this->addDefaultChildren) {
if ($this->default) {
throw new InvalidDefinitionException(
sprintf('A default value and default children might not be used together at path "%s"', $path)
);
}
if (null !== $this->key && (null === $this->addDefaultChildren || is_integer($this->addDefaultChildren) && $this->addDefaultChildren > 0)) {
throw new InvalidDefinitionException(
sprintf('->addDefaultChildrenIfNoneSet() should set default children names as ->useAttributeAsKey() is used at path "%s"', $path)
);
}
if (null === $this->key && (is_string($this->addDefaultChildren) || is_array($this->addDefaultChildren))) {
throw new InvalidDefinitionException(
sprintf('->addDefaultChildrenIfNoneSet() might not set default children names as ->useAttributeAsKey() is not used at path "%s"', $path)
);
}
}
}
}
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