--- /dev/null
+<?php
+
+namespace PhpParser;
+
+abstract class NodeAbstract implements Node, \JsonSerializable
+{
+ protected $attributes;
+
+ /**
+ * Creates a Node.
+ *
+ * @param array $attributes Array of attributes
+ */
+ public function __construct(array $attributes = array()) {
+ $this->attributes = $attributes;
+ }
+
+ /**
+ * Gets the type of the node.
+ *
+ * @return string Type of the node
+ */
+ public function getType() {
+ return strtr(substr(rtrim(get_class($this), '_'), 15), '\\', '_');
+ }
+
+ /**
+ * Gets line the node started in.
+ *
+ * @return int Line
+ */
+ public function getLine() {
+ return $this->getAttribute('startLine', -1);
+ }
+
+ /**
+ * Sets line the node started in.
+ *
+ * @param int $line Line
+ */
+ public function setLine($line) {
+ $this->setAttribute('startLine', (int) $line);
+ }
+
+ /**
+ * Gets the doc comment of the node.
+ *
+ * The doc comment has to be the last comment associated with the node.
+ *
+ * @return null|Comment\Doc Doc comment object or null
+ */
+ public function getDocComment() {
+ $comments = $this->getAttribute('comments');
+ if (!$comments) {
+ return null;
+ }
+
+ $lastComment = $comments[count($comments) - 1];
+ if (!$lastComment instanceof Comment\Doc) {
+ return null;
+ }
+
+ return $lastComment;
+ }
+
+ /**
+ * Sets the doc comment of the node.
+ *
+ * This will either replace an existing doc comment or add it to the comments array.
+ *
+ * @param Comment\Doc $docComment Doc comment to set
+ */
+ public function setDocComment(Comment\Doc $docComment) {
+ $comments = $this->getAttribute('comments', []);
+
+ $numComments = count($comments);
+ if ($numComments > 0 && $comments[$numComments - 1] instanceof Comment\Doc) {
+ // Replace existing doc comment
+ $comments[$numComments - 1] = $docComment;
+ } else {
+ // Append new comment
+ $comments[] = $docComment;
+ }
+
+ $this->setAttribute('comments', $comments);
+ }
+
+ public function setAttribute($key, $value) {
+ $this->attributes[$key] = $value;
+ }
+
+ public function hasAttribute($key) {
+ return array_key_exists($key, $this->attributes);
+ }
+
+ public function &getAttribute($key, $default = null) {
+ if (!array_key_exists($key, $this->attributes)) {
+ return $default;
+ } else {
+ return $this->attributes[$key];
+ }
+ }
+
+ public function getAttributes() {
+ return $this->attributes;
+ }
+
+ public function jsonSerialize() {
+ return ['nodeType' => $this->getType()] + get_object_vars($this);
+ }
+}