Developer
<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2023 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Reflection;
/**
* Somehow the standard reflection library doesn't include constants.
*
* ReflectionConstant corrects that omission.
*/
class ReflectionConstant implements \Reflector
{
public $name;
private $value;
private static $magicConstants = [
'__LINE__',
'__FILE__',
'__DIR__',
'__FUNCTION__',
'__CLASS__',
'__TRAIT__',
'__METHOD__',
'__NAMESPACE__',
'__COMPILER_HALT_OFFSET__',
];
/**
* Construct a ReflectionConstant object.
*
* @param string $name
*/
public function __construct(string $name)
{
$this->name = $name;
if (!\defined($name) && !self::isMagicConstant($name)) {
throw new \InvalidArgumentException('Unknown constant: '.$name);
}
if (!self::isMagicConstant($name)) {
$this->value = @\constant($name);
}
}
/**
* Exports a reflection.
*
* @param string $name
* @param bool $return pass true to return the export, as opposed to emitting it
*
* @return string|null
*/
public static function export(string $name, bool $return = false)
{
$refl = new self($name);
$value = $refl->getValue();
$str = \sprintf('Constant [ %s %s ] { %s }', \gettype($value), $refl->getName(), $value);
if ($return) {
return $str;
}
echo $str."\n";
}
public static function isMagicConstant($name)
{
return \in_array($name, self::$magicConstants);
}
/**
* Get the constant's docblock.
*
* @return false
*/
public function getDocComment(): bool
{
return false;
}
/**
* Gets the constant name.
*/
public function getName(): string
{
return $this->name;
}
/**
* Gets the namespace name.
*
* Returns '' when the constant is not namespaced.
*/
public function getNamespaceName(): string
{
if (!$this->inNamespace()) {
return '';
}
return \preg_replace('/\\\\[^\\\\]+$/', '', $this->name);
}
/**
* Gets the value of the constant.
*
* @return mixed
*/
public function getValue()
{
return $this->value;
}
/**
* Checks if this constant is defined in a namespace.
*/
public function inNamespace(): bool
{
return \strpos($this->name, '\\') !== false;
}
/**
* To string.
*/
public function __toString(): string
{
return $this->getName();
}
/**
* Gets the constant's file name.
*
* Currently returns null, because if it returns a file name the signature
* formatter will barf.
*/
public function getFileName()
{
return;
// return $this->class->getFileName();
}
/**
* Get the code start line.
*
* @throws \RuntimeException
*/
public function getStartLine()
{
throw new \RuntimeException('Not yet implemented because it\'s unclear what I should do here :)');
}
/**
* Get the code end line.
*
* @throws \RuntimeException
*/
public function getEndLine()
{
return $this->getStartLine();
}
}
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