300 lines
10 KiB
PHP
300 lines
10 KiB
PHP
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<?php declare(strict_types=1);
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namespace PhpParser;
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use PhpParser\Node\Expr\Array_;
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use PhpParser\Node\Expr\Include_;
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use PhpParser\Node\Expr\List_;
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use PhpParser\Node\Scalar\Int_;
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use PhpParser\Node\Scalar\InterpolatedString;
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use PhpParser\Node\Scalar\String_;
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use PhpParser\Node\Stmt\GroupUse;
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use PhpParser\Node\Stmt\Use_;
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use PhpParser\Node\UseItem;
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class NodeDumper {
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private bool $dumpComments;
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private bool $dumpPositions;
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private bool $dumpOtherAttributes;
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private ?string $code;
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private string $res;
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private string $nl;
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private const IGNORE_ATTRIBUTES = [
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'comments' => true,
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'startLine' => true,
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'endLine' => true,
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'startFilePos' => true,
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'endFilePos' => true,
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'startTokenPos' => true,
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'endTokenPos' => true,
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];
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/**
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* Constructs a NodeDumper.
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*
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* Supported options:
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* * bool dumpComments: Whether comments should be dumped.
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* * bool dumpPositions: Whether line/offset information should be dumped. To dump offset
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* information, the code needs to be passed to dump().
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* * bool dumpOtherAttributes: Whether non-comment, non-position attributes should be dumped.
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*
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* @param array $options Options (see description)
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*/
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public function __construct(array $options = []) {
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$this->dumpComments = !empty($options['dumpComments']);
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$this->dumpPositions = !empty($options['dumpPositions']);
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$this->dumpOtherAttributes = !empty($options['dumpOtherAttributes']);
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}
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/**
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* Dumps a node or array.
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*
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* @param array|Node $node Node or array to dump
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* @param string|null $code Code corresponding to dumped AST. This only needs to be passed if
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* the dumpPositions option is enabled and the dumping of node offsets
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* is desired.
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*
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* @return string Dumped value
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*/
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public function dump($node, ?string $code = null): string {
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$this->code = $code;
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$this->res = '';
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$this->nl = "\n";
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$this->dumpRecursive($node, false);
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return $this->res;
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}
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/** @param mixed $node */
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protected function dumpRecursive($node, bool $indent = true): void {
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if ($indent) {
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$this->nl .= " ";
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}
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if ($node instanceof Node) {
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$this->res .= $node->getType();
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if ($this->dumpPositions && null !== $p = $this->dumpPosition($node)) {
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$this->res .= $p;
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}
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$this->res .= '(';
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foreach ($node->getSubNodeNames() as $key) {
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$this->res .= "$this->nl " . $key . ': ';
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$value = $node->$key;
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if (\is_int($value)) {
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if ('flags' === $key || 'newModifier' === $key) {
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$this->res .= $this->dumpFlags($value);
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continue;
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}
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if ('type' === $key && $node instanceof Include_) {
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$this->res .= $this->dumpIncludeType($value);
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continue;
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}
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if ('type' === $key
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&& ($node instanceof Use_ || $node instanceof UseItem || $node instanceof GroupUse)) {
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$this->res .= $this->dumpUseType($value);
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continue;
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}
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}
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$this->dumpRecursive($value);
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}
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if ($this->dumpComments && $comments = $node->getComments()) {
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$this->res .= "$this->nl comments: ";
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$this->dumpRecursive($comments);
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}
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if ($this->dumpOtherAttributes) {
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foreach ($node->getAttributes() as $key => $value) {
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if (isset(self::IGNORE_ATTRIBUTES[$key])) {
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continue;
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}
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$this->res .= "$this->nl $key: ";
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if (\is_int($value)) {
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if ('kind' === $key) {
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if ($node instanceof Int_) {
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$this->res .= $this->dumpIntKind($value);
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continue;
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}
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if ($node instanceof String_ || $node instanceof InterpolatedString) {
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$this->res .= $this->dumpStringKind($value);
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continue;
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}
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if ($node instanceof Array_) {
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$this->res .= $this->dumpArrayKind($value);
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continue;
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}
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if ($node instanceof List_) {
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$this->res .= $this->dumpListKind($value);
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continue;
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}
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}
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}
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$this->dumpRecursive($value);
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}
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}
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$this->res .= "$this->nl)";
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} elseif (\is_array($node)) {
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$this->res .= 'array(';
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foreach ($node as $key => $value) {
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$this->res .= "$this->nl " . $key . ': ';
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$this->dumpRecursive($value);
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}
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$this->res .= "$this->nl)";
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} elseif ($node instanceof Comment) {
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$this->res .= \str_replace("\n", $this->nl, $node->getReformattedText());
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} elseif (\is_string($node)) {
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$this->res .= \str_replace("\n", $this->nl, $node);
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} elseif (\is_int($node) || \is_float($node)) {
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$this->res .= $node;
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} elseif (null === $node) {
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$this->res .= 'null';
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} elseif (false === $node) {
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$this->res .= 'false';
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} elseif (true === $node) {
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$this->res .= 'true';
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} else {
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throw new \InvalidArgumentException('Can only dump nodes and arrays.');
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}
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if ($indent) {
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$this->nl = \substr($this->nl, 0, -4);
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}
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}
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protected function dumpFlags(int $flags): string {
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$strs = [];
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if ($flags & Modifiers::PUBLIC) {
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$strs[] = 'PUBLIC';
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}
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if ($flags & Modifiers::PROTECTED) {
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$strs[] = 'PROTECTED';
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}
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if ($flags & Modifiers::PRIVATE) {
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$strs[] = 'PRIVATE';
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}
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if ($flags & Modifiers::ABSTRACT) {
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$strs[] = 'ABSTRACT';
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}
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if ($flags & Modifiers::STATIC) {
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$strs[] = 'STATIC';
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}
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if ($flags & Modifiers::FINAL) {
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$strs[] = 'FINAL';
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}
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if ($flags & Modifiers::READONLY) {
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$strs[] = 'READONLY';
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}
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if ($flags & Modifiers::PUBLIC_SET) {
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$strs[] = 'PUBLIC_SET';
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}
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if ($flags & Modifiers::PROTECTED_SET) {
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$strs[] = 'PROTECTED_SET';
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}
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if ($flags & Modifiers::PRIVATE_SET) {
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$strs[] = 'PRIVATE_SET';
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}
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if ($strs) {
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return implode(' | ', $strs) . ' (' . $flags . ')';
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} else {
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return (string) $flags;
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}
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}
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/** @param array<int, string> $map */
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private function dumpEnum(int $value, array $map): string {
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if (!isset($map[$value])) {
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return (string) $value;
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}
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return $map[$value] . ' (' . $value . ')';
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}
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private function dumpIncludeType(int $type): string {
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return $this->dumpEnum($type, [
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Include_::TYPE_INCLUDE => 'TYPE_INCLUDE',
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Include_::TYPE_INCLUDE_ONCE => 'TYPE_INCLUDE_ONCE',
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Include_::TYPE_REQUIRE => 'TYPE_REQUIRE',
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Include_::TYPE_REQUIRE_ONCE => 'TYPE_REQUIRE_ONCE',
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]);
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}
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private function dumpUseType(int $type): string {
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return $this->dumpEnum($type, [
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Use_::TYPE_UNKNOWN => 'TYPE_UNKNOWN',
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Use_::TYPE_NORMAL => 'TYPE_NORMAL',
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Use_::TYPE_FUNCTION => 'TYPE_FUNCTION',
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Use_::TYPE_CONSTANT => 'TYPE_CONSTANT',
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]);
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}
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private function dumpIntKind(int $kind): string {
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return $this->dumpEnum($kind, [
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Int_::KIND_BIN => 'KIND_BIN',
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Int_::KIND_OCT => 'KIND_OCT',
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Int_::KIND_DEC => 'KIND_DEC',
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Int_::KIND_HEX => 'KIND_HEX',
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]);
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}
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private function dumpStringKind(int $kind): string {
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return $this->dumpEnum($kind, [
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String_::KIND_SINGLE_QUOTED => 'KIND_SINGLE_QUOTED',
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String_::KIND_DOUBLE_QUOTED => 'KIND_DOUBLE_QUOTED',
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String_::KIND_HEREDOC => 'KIND_HEREDOC',
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String_::KIND_NOWDOC => 'KIND_NOWDOC',
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]);
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}
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private function dumpArrayKind(int $kind): string {
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return $this->dumpEnum($kind, [
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Array_::KIND_LONG => 'KIND_LONG',
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Array_::KIND_SHORT => 'KIND_SHORT',
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]);
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}
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private function dumpListKind(int $kind): string {
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return $this->dumpEnum($kind, [
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List_::KIND_LIST => 'KIND_LIST',
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List_::KIND_ARRAY => 'KIND_ARRAY',
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]);
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}
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/**
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* Dump node position, if possible.
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*
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* @param Node $node Node for which to dump position
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*
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* @return string|null Dump of position, or null if position information not available
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*/
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protected function dumpPosition(Node $node): ?string {
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if (!$node->hasAttribute('startLine') || !$node->hasAttribute('endLine')) {
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return null;
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}
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$start = $node->getStartLine();
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$end = $node->getEndLine();
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if ($node->hasAttribute('startFilePos') && $node->hasAttribute('endFilePos')
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&& null !== $this->code
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) {
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$start .= ':' . $this->toColumn($this->code, $node->getStartFilePos());
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$end .= ':' . $this->toColumn($this->code, $node->getEndFilePos());
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}
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return "[$start - $end]";
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}
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// Copied from Error class
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private function toColumn(string $code, int $pos): int {
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if ($pos > strlen($code)) {
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throw new \RuntimeException('Invalid position information');
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}
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$lineStartPos = strrpos($code, "\n", $pos - strlen($code));
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if (false === $lineStartPos) {
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$lineStartPos = -1;
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}
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return $pos - $lineStartPos;
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}
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}
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