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15 * This software consists of voluntary contributions made by many individuals
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17 * <http://www.doctrine-project.org>.
20 namespace Doctrine\ORM\Query\AST;
23 * Abstract class of an AST node
26 * @link www.doctrine-project.org
28 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
29 * @author Jonathan Wage <jonwage@gmail.com>
30 * @author Roman Borschel <roman@code-factory.org>
35 * Double-dispatch method, supposed to dispatch back to the walker.
37 * Implementation is not mandatory for all nodes.
41 public function dispatch($walker)
43 throw ASTException::noDispatchForNode($this);
47 * Dumps the AST Node into a string representation for information purpose only
51 public function __toString()
53 return $this->dump($this);
56 public function dump($obj)
62 if ($obj instanceof Node) {
63 $str .= get_class($obj) . '(' . PHP_EOL;
64 $props = get_object_vars($obj);
66 foreach ($props as $name => $prop) {
68 $str .= str_repeat(' ', $ident) . '"' . $name . '": '
69 . $this->dump($prop) . ',' . PHP_EOL;
73 $str .= str_repeat(' ', $ident) . ')';
74 } else if (is_array($obj)) {
79 foreach ($obj as $k => $v) {
80 $str .= PHP_EOL . str_repeat(' ', $ident) . '"'
81 . $k . '" => ' . $this->dump($v) . ',';
86 $str .= ($some ? PHP_EOL . str_repeat(' ', $ident) : '') . ')';
87 } else if (is_object($obj)) {
88 $str .= 'instanceof(' . get_class($obj) . ')';
90 $str .= var_export($obj, true);