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<?php |
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declare(strict_types=1); |
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namespace Remorhaz\UniLex\AST; |
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use Remorhaz\UniLex\Exception as UniLexException; |
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use Remorhaz\UniLex\Stack\StackableSymbolInterface; |
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use function chr; |
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use function is_array; |
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use function is_int; |
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class Node implements StackableSymbolInterface |
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{ |
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private $id; |
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private $name; |
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private $attributeMap = []; |
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private $childMap = []; |
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public function __construct(int $id, string $name) |
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{ |
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$this->id = $id; |
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$this->name = $name; |
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} |
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public function getId(): int |
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{ |
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return $this->id; |
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} |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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public function getClone(): self |
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{ |
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$clone = clone $this; |
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$clone->childMap = []; |
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foreach ($this->getChildList() as $childNode) { |
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$clone->addChild($childNode->getClone()); |
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} |
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return $clone; |
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} |
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/** |
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* @param string $name |
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* @param $value |
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* @return Node |
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* @throws UniLexException |
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*/ |
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public function setAttribute(string $name, $value): self |
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{ |
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if (isset($this->attributeMap[$name])) { |
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throw new UniLexException("Attribute '{$name}' is already defined in syntax tree node {$this->getId()}"); |
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} |
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$this->attributeMap[$name] = $value; |
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return $this; |
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} |
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/** |
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* @param string $name |
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* @return mixed |
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* @throws UniLexException |
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*/ |
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public function getAttribute(string $name) |
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{ |
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if (!isset($this->attributeMap[$name])) { |
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throw new UniLexException("Attribute '{$name}' is not defined in syntax tree node {$this->getId()}"); |
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} |
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return $this->attributeMap[$name]; |
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} |
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/** |
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* @param string $name |
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* @return int |
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* @throws UniLexException |
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*/ |
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public function getIntAttribute(string $name): int |
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{ |
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$attribute = $this->getAttribute($name); |
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if (is_int($attribute)) { |
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return $attribute; |
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} |
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throw new Exception\InvalidAttributeException($name, $attribute, 'integer'); |
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} |
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/** |
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* @param string $name |
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* @return string |
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* @throws UniLexException |
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*/ |
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public function getStringAttribute(string $name): string |
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{ |
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$attribute = $this->getAttribute($name); |
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if (is_array($attribute)) { |
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$string = ''; |
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foreach ($attribute as $symbol) { |
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if (!is_int($symbol) || $symbol > 0xFF) { |
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throw new Exception\InvalidAttributeException($name, $attribute, 'integer[]'); |
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} |
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$string .= chr($symbol); |
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} |
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return $string; |
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} |
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throw new Exception\InvalidAttributeException($name, $attribute, 'integer[]'); |
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} |
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public function addChild(Node $node): self |
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{ |
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$this->childMap[] = $node; |
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return $this; |
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} |
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/** |
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* @param int $index |
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* @return Node |
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* @throws UniLexException |
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*/ |
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public function getChild(int $index): Node |
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{ |
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if (!isset($this->childMap[$index])) { |
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throw new UniLexException("Child node at index {$index} in node {$this->getId()} is not defined"); |
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} |
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return $this->childMap[$index]; |
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} |
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/** |
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* @return Node[] |
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*/ |
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public function getChildList(): array |
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{ |
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return $this->childMap; |
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} |
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/** |
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* @return int[] |
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*/ |
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public function getChildIndexList(): array |
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{ |
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return array_keys($this->childMap); |
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} |
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public function getAttributeList(): array |
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{ |
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return $this->attributeMap; |
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} |
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} |
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remorhaz /
php-unilex
