279 lines
8.5 KiB
PHP
279 lines
8.5 KiB
PHP
<?php declare(strict_types=1);
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namespace PhpParser\Node;
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use PhpParser\NodeAbstract;
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class Name extends NodeAbstract {
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/**
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* @psalm-var non-empty-string
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* @var string Name as string
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*/
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public string $name;
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/** @var array<string, bool> */
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private static array $specialClassNames = [
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'self' => true,
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'parent' => true,
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'static' => true,
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];
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/**
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* Constructs a name node.
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*
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* @param string|string[]|self $name Name as string, part array or Name instance (copy ctor)
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* @param array<string, mixed> $attributes Additional attributes
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*/
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final public function __construct($name, array $attributes = []) {
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$this->attributes = $attributes;
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$this->name = self::prepareName($name);
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}
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public function getSubNodeNames(): array {
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return ['name'];
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}
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/**
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* Get parts of name (split by the namespace separator).
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*
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* @psalm-return non-empty-list<string>
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* @return string[] Parts of name
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*/
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public function getParts(): array {
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return \explode('\\', $this->name);
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}
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/**
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* Gets the first part of the name, i.e. everything before the first namespace separator.
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*
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* @return string First part of the name
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*/
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public function getFirst(): string {
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if (false !== $pos = \strpos($this->name, '\\')) {
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return \substr($this->name, 0, $pos);
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}
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return $this->name;
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}
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/**
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* Gets the last part of the name, i.e. everything after the last namespace separator.
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*
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* @return string Last part of the name
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*/
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public function getLast(): string {
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if (false !== $pos = \strrpos($this->name, '\\')) {
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return \substr($this->name, $pos + 1);
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}
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return $this->name;
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}
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/**
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* Checks whether the name is unqualified. (E.g. Name)
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*
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* @return bool Whether the name is unqualified
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*/
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public function isUnqualified(): bool {
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return false === \strpos($this->name, '\\');
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}
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/**
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* Checks whether the name is qualified. (E.g. Name\Name)
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*
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* @return bool Whether the name is qualified
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*/
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public function isQualified(): bool {
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return false !== \strpos($this->name, '\\');
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}
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/**
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* Checks whether the name is fully qualified. (E.g. \Name)
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*
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* @return bool Whether the name is fully qualified
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*/
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public function isFullyQualified(): bool {
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return false;
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}
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/**
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* Checks whether the name is explicitly relative to the current namespace. (E.g. namespace\Name)
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*
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* @return bool Whether the name is relative
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*/
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public function isRelative(): bool {
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return false;
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}
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/**
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* Returns a string representation of the name itself, without taking the name type into
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* account (e.g., not including a leading backslash for fully qualified names).
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*
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* @psalm-return non-empty-string
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* @return string String representation
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*/
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public function toString(): string {
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return $this->name;
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}
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/**
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* Returns a string representation of the name as it would occur in code (e.g., including
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* leading backslash for fully qualified names.
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*
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* @psalm-return non-empty-string
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* @return string String representation
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*/
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public function toCodeString(): string {
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return $this->toString();
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}
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/**
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* Returns lowercased string representation of the name, without taking the name type into
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* account (e.g., no leading backslash for fully qualified names).
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*
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* @psalm-return non-empty-string&lowercase-string
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* @return string Lowercased string representation
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*/
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public function toLowerString(): string {
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return strtolower($this->name);
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}
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/**
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* Checks whether the identifier is a special class name (self, parent or static).
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*
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* @return bool Whether identifier is a special class name
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*/
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public function isSpecialClassName(): bool {
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return isset(self::$specialClassNames[strtolower($this->name)]);
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}
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/**
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* Returns a string representation of the name by imploding the namespace parts with the
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* namespace separator.
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*
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* @psalm-return non-empty-string
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* @return string String representation
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*/
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public function __toString(): string {
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return $this->name;
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}
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/**
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* Gets a slice of a name (similar to array_slice).
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*
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* This method returns a new instance of the same type as the original and with the same
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* attributes.
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*
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* If the slice is empty, null is returned. The null value will be correctly handled in
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* concatenations using concat().
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*
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* Offset and length have the same meaning as in array_slice().
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*
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* @param int $offset Offset to start the slice at (may be negative)
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* @param int|null $length Length of the slice (may be negative)
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*
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* @return static|null Sliced name
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*/
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public function slice(int $offset, ?int $length = null) {
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if ($offset === 1 && $length === null) {
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// Short-circuit the common case.
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if (false !== $pos = \strpos($this->name, '\\')) {
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return new static(\substr($this->name, $pos + 1));
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}
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return null;
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}
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$parts = \explode('\\', $this->name);
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$numParts = \count($parts);
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$realOffset = $offset < 0 ? $offset + $numParts : $offset;
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if ($realOffset < 0 || $realOffset > $numParts) {
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throw new \OutOfBoundsException(sprintf('Offset %d is out of bounds', $offset));
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}
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if (null === $length) {
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$realLength = $numParts - $realOffset;
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} else {
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$realLength = $length < 0 ? $length + $numParts - $realOffset : $length;
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if ($realLength < 0 || $realLength > $numParts - $realOffset) {
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throw new \OutOfBoundsException(sprintf('Length %d is out of bounds', $length));
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}
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}
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if ($realLength === 0) {
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// Empty slice is represented as null
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return null;
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}
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return new static(array_slice($parts, $realOffset, $realLength), $this->attributes);
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}
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/**
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* Concatenate two names, yielding a new Name instance.
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*
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* The type of the generated instance depends on which class this method is called on, for
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* example Name\FullyQualified::concat() will yield a Name\FullyQualified instance.
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*
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* If one of the arguments is null, a new instance of the other name will be returned. If both
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* arguments are null, null will be returned. As such, writing
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* Name::concat($namespace, $shortName)
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* where $namespace is a Name node or null will work as expected.
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*
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* @param string|string[]|self|null $name1 The first name
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* @param string|string[]|self|null $name2 The second name
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* @param array<string, mixed> $attributes Attributes to assign to concatenated name
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*
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* @return static|null Concatenated name
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*/
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public static function concat($name1, $name2, array $attributes = []) {
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if (null === $name1 && null === $name2) {
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return null;
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}
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if (null === $name1) {
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return new static($name2, $attributes);
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}
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if (null === $name2) {
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return new static($name1, $attributes);
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} else {
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return new static(
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self::prepareName($name1) . '\\' . self::prepareName($name2), $attributes
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);
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}
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}
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/**
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* Prepares a (string, array or Name node) name for use in name changing methods by converting
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* it to a string.
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*
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* @param string|string[]|self $name Name to prepare
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*
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* @psalm-return non-empty-string
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* @return string Prepared name
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*/
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private static function prepareName($name): string {
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if (\is_string($name)) {
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if ('' === $name) {
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throw new \InvalidArgumentException('Name cannot be empty');
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}
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return $name;
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}
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if (\is_array($name)) {
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if (empty($name)) {
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throw new \InvalidArgumentException('Name cannot be empty');
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}
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return implode('\\', $name);
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}
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if ($name instanceof self) {
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return $name->name;
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}
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throw new \InvalidArgumentException(
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'Expected string, array of parts or Name instance'
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);
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}
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public function getType(): string {
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return 'Name';
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}
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}
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