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ArcanistDiffVectorTree.php
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ArcanistDiffVectorTree.php
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<?php
final class ArcanistDiffVectorTree
extends Phobject {
private $vectors = array();
public function addVector(array $vector) {
$this->vectors[] = $vector;
return $this;
}
public function newDisplayList() {
$root = new ArcanistDiffVectorNode();
foreach ($this->vectors as $vector) {
$root->addChild($vector, count($vector), 0);
}
foreach ($root->getChildren() as $child) {
$this->compressTree($child);
}
$root->setDisplayDepth(-1);
foreach ($root->getChildren() as $child) {
$this->updateDisplayDepth($child);
}
return $this->getDisplayList($root);
}
private function compressTree(ArcanistDiffVectorNode $node) {
$display_node = $node;
$children = $node->getChildren();
if ($children) {
$parent = $node->getParentNode();
if ($parent) {
$siblings = $parent->getChildren();
if (count($siblings) === 1) {
if (!$parent->getValueNode()) {
$parent_display = $parent->getDisplayNode();
if ($parent_display) {
$display_node = $parent_display;
if ($node->getValueNode()) {
$parent->setValueNode($node->getValueNode());
}
}
}
}
}
}
$node->setDisplayNode($display_node);
$display_element = last($node->getVector());
$display_node->appendDisplayElement($display_element);
foreach ($children as $child) {
$this->compressTree($child);
}
}
private function updateDisplayDepth(ArcanistDiffVectorNode $node) {
$parent_depth = $node->getParentNode()->getDisplayDepth();
if ($node->getDisplayVector() === null) {
$display_depth = $parent_depth;
} else {
$display_depth = $parent_depth + 1;
}
$node->setDisplayDepth($display_depth);
foreach ($node->getChildren() as $child) {
$this->updateDisplayDepth($child);
}
}
private function getDisplayList(ArcanistDiffVectorNode $node) {
$result = array();
foreach ($node->getChildren() as $child) {
if ($child->getDisplayVector() !== null) {
$result[] = $child;
}
foreach ($this->getDisplayList($child) as $item) {
$result[] = $item;
}
}
return $result;
}
}

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ArcanistDiffVectorTree.php (2 KB)

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