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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; /** * This class provides a fluent interface for building a node. * * @author Johannes M. Schmitt <schmittjoh@gmail.com> */ class NodeBuilder implements NodeParentInterface { protected $parent; protected $nodeMapping; public function __construct() { $this->nodeMapping = [ 'variable' => VariableNodeDefinition::class, 'scalar' => ScalarNodeDefinition::class, 'boolean' => BooleanNodeDefinition::class, 'integer' => IntegerNodeDefinition::class, 'float' => FloatNodeDefinition::class, 'array' => ArrayNodeDefinition::class, 'enum' => EnumNodeDefinition::class, ]; } /** * Set the parent node. * * @return $this */ public function setParent(ParentNodeDefinitionInterface $parent = null) { $this->parent = $parent; return $this; } /** * Creates a child array node. * * @param string $name The name of the node * * @return ArrayNodeDefinition The child node */ public function arrayNode($name) { return $this->node($name, 'array'); } /** * Creates a child scalar node. * * @param string $name The name of the node * * @return ScalarNodeDefinition The child node */ public function scalarNode($name) { return $this->node($name, 'scalar'); } /** * Creates a child Boolean node. * * @param string $name The name of the node * * @return BooleanNodeDefinition The child node */ public function booleanNode($name) { return $this->node($name, 'boolean'); } /** * Creates a child integer node. * * @param string $name The name of the node * * @return IntegerNodeDefinition The child node */ public function integerNode($name) { return $this->node($name, 'integer'); } /** * Creates a child float node. * * @param string $name The name of the node * * @return FloatNodeDefinition The child node */ public function floatNode($name) { return $this->node($name, 'float'); } /** * Creates a child EnumNode. * * @param string $name * * @return EnumNodeDefinition */ public function enumNode($name) { return $this->node($name, 'enum'); } /** * Creates a child variable node. * * @param string $name The name of the node * * @return VariableNodeDefinition The builder of the child node */ public function variableNode($name) { return $this->node($name, 'variable'); } /** * Returns the parent node. * * @return NodeDefinition&ParentNodeDefinitionInterface The parent node */ public function end() { return $this->parent; } /** * Creates a child node. * * @param string|null $name The name of the node * @param string $type The type of the node * * @return NodeDefinition The child node * * @throws \RuntimeException When the node type is not registered * @throws \RuntimeException When the node class is not found */ public function node($name, $type) { $class = $this->getNodeClass($type); $node = new $class($name); $this->append($node); return $node; } /** * Appends a node definition. * * Usage: * * $node = new ArrayNodeDefinition('name') * ->children() * ->scalarNode('foo')->end() * ->scalarNode('baz')->end() * ->append($this->getBarNodeDefinition()) * ->end() * ; * * @return $this */ public function append(NodeDefinition $node) { if ($node instanceof BuilderAwareInterface) { $builder = clone $this; $builder->setParent(null); $node->setBuilder($builder); } if (null !== $this->parent) { $this->parent->append($node); // Make this builder the node parent to allow for a fluid interface $node->setParent($this); } return $this; } /** * Adds or overrides a node Type. * * @param string $type The name of the type * @param string $class The fully qualified name the node definition class * * @return $this */ public function setNodeClass($type, $class) { $this->nodeMapping[strtolower($type)] = $class; return $this; } /** * Returns the class name of the node definition. * * @param string $type The node type * * @return string The node definition class name * * @throws \RuntimeException When the node type is not registered * @throws \RuntimeException When the node class is not found */ protected function getNodeClass($type) { $type = strtolower($type); if (!isset($this->nodeMapping[$type])) { throw new \RuntimeException(sprintf('The node type "%s" is not registered.', $type)); } $class = $this->nodeMapping[$type]; if (!class_exists($class)) { throw new \RuntimeException(sprintf('The node class "%s" does not exist.', $class)); } return $class; } }