D14496.id35087.diff
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D14496.id35087.diff
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	diff --git a/src/parser/aast/api/AASTNode.php b/src/parser/aast/api/AASTNode.php
	--- a/src/parser/aast/api/AASTNode.php
	+++ b/src/parser/aast/api/AASTNode.php
	@@ -13,6 +13,8 @@
	// faster; do not access them directly.
	public $children = array();
	public $parentNode;
	+ public $previousSibling = null;
	+ public $nextSibling = null;

	private $selectCache;

	@@ -41,6 +43,14 @@
	return $this->parentNode;
	}

	+ final public function getPreviousSibling() {
	+ return $this->previousSibling;
	+ }
	+
	+ final public function getNextSibling() {
	+ return $this->nextSibling;
	+ }
	+
	final public function getID() {
	return $this->id;
	}
	diff --git a/src/parser/aast/api/AASTTree.php b/src/parser/aast/api/AASTTree.php
	--- a/src/parser/aast/api/AASTTree.php
	+++ b/src/parser/aast/api/AASTTree.php
	@@ -141,9 +141,23 @@
	foreach ($nodes as $node_id => $node) {
	if (isset($node[3])) {
	$children = $this->buildTree($node[3]);
	- foreach ($children as $child) {
	+ $previous_child = null;
	+
	+ foreach ($children as $ii => $child) {
	$child->parentNode = $this->tree[$node_id];
	+ $child->previousSibling = $previous_child;
	+
	+ if ($previous_child) {
	+ $previous_child->nextSibling = $child;
	+ }
	+
	+ $previous_child = $child;
	}
	+
	+ if ($previous_child) {
	+ $previous_child->nextSibling = $child;
	+ }
	+
	$this->tree[$node_id]->children = $children;
	}
	}