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Simplify NodeTraverser->traverseNode()

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Markus Staab 2024-12-30 09:34:17 +01:00 committed by Nikita Popov
parent 74a361814d
commit 45f70ed80a
1 changed files with 59 additions and 53 deletions
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112
lib/PhpParser/NodeTraverser.php
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@ -99,66 +99,72 @@ class NodeTraverser implements NodeTraverserInterface {
if ($this->stopTraversal) {
break;
}
} elseif ($subNode instanceof Node) {
$traverseChildren = true;
$visitorIndex = -1;
foreach ($this->visitors as $visitorIndex => $visitor) {
$return = $visitor->enterNode($subNode);
if (null !== $return) {
if ($return instanceof Node) {
$this->ensureReplacementReasonable($subNode, $return);
$subNode = $node->$name = $return;
} elseif (NodeVisitor::DONT_TRAVERSE_CHILDREN === $return) {
$traverseChildren = false;
} elseif (NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN === $return) {
$traverseChildren = false;
break;
} elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
$this->stopTraversal = true;
break 2;
} elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
$node->$name = null;
continue 2;
} else {
throw new \LogicException(
'enterNode() returned invalid value of type ' . gettype($return)
);
}
}
}
continue;
}
if ($traverseChildren) {
$this->traverseNode($subNode);
if ($this->stopTraversal) {
if (!$subNode instanceof Node) {
continue;
}
$traverseChildren = true;
$visitorIndex = -1;
foreach ($this->visitors as $visitorIndex => $visitor) {
$return = $visitor->enterNode($subNode);
if (null !== $return) {
if ($return instanceof Node) {
$this->ensureReplacementReasonable($subNode, $return);
$subNode = $node->$name = $return;
} elseif (NodeVisitor::DONT_TRAVERSE_CHILDREN === $return) {
$traverseChildren = false;
} elseif (NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN === $return) {
$traverseChildren = false;
break;
} elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
$this->stopTraversal = true;
break 2;
} elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
$node->$name = null;
continue 2;
} else {
throw new \LogicException(
'enterNode() returned invalid value of type ' . gettype($return)
);
}
}
}
for (; $visitorIndex >= 0; --$visitorIndex) {
$visitor = $this->visitors[$visitorIndex];
$return = $visitor->leaveNode($subNode);
if ($traverseChildren) {
$this->traverseNode($subNode);
if ($this->stopTraversal) {
break;
}
}
if (null !== $return) {
if ($return instanceof Node) {
$this->ensureReplacementReasonable($subNode, $return);
$subNode = $node->$name = $return;
} elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
$this->stopTraversal = true;
break 2;
} elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
$node->$name = null;
break;
} elseif (\is_array($return)) {
throw new \LogicException(
'leaveNode() may only return an array ' .
'if the parent structure is an array'
);
} else {
throw new \LogicException(
'leaveNode() returned invalid value of type ' . gettype($return)
);
}
for (; $visitorIndex >= 0; --$visitorIndex) {
$visitor = $this->visitors[$visitorIndex];
$return = $visitor->leaveNode($subNode);
if (null !== $return) {
if ($return instanceof Node) {
$this->ensureReplacementReasonable($subNode, $return);
$subNode = $node->$name = $return;
} elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
$this->stopTraversal = true;
break 2;
} elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
$node->$name = null;
break;
} elseif (\is_array($return)) {
throw new \LogicException(
'leaveNode() may only return an array ' .
'if the parent structure is an array'
);
} else {
throw new \LogicException(
'leaveNode() returned invalid value of type ' . gettype($return)
);
}
}
}