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