Macroable.php
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<?php
namespace Illuminate\Support\Traits;
use BadMethodCallException;
use Closure;
use ReflectionClass;
use ReflectionMethod;
trait Macroable
{
/**
* The registered string macros.
*
* @var array
*/
protected static $macros = [];
/**
* Register a custom macro.
*
* @param string $name
* @param object|callable $macro
* @return void
*/
public static function macro($name, $macro)
{
static::$macros[$name] = $macro;
}
/**
* Mix another object into the class.
*
* @param object $mixin
* @param bool $replace
* @return void
*
* @throws \ReflectionException
*/
public static function mixin($mixin, $replace = true)
{
$methods = (new ReflectionClass($mixin))->getMethods(
ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_PROTECTED
);
foreach ($methods as $method) {
if ($replace || ! static::hasMacro($method->name)) {
$method->setAccessible(true);
static::macro($method->name, $method->invoke($mixin));
}
}
}
/**
* Checks if macro is registered.
*
* @param string $name
* @return bool
*/
public static function hasMacro($name)
{
return isset(static::$macros[$name]);
}
/**
* Flush the existing macros.
*
* @return void
*/
public static function flushMacros()
{
static::$macros = [];
}
/**
* Dynamically handle calls to the class.
*
* @param string $method
* @param array $parameters
* @return mixed
*
* @throws \BadMethodCallException
*/
public static function __callStatic($method, $parameters)
{
if (! static::hasMacro($method)) {
throw new BadMethodCallException(sprintf(
'Method %s::%s does not exist.', static::class, $method
));
}
$macro = static::$macros[$method];
if ($macro instanceof Closure) {
$macro = $macro->bindTo(null, static::class);
}
return $macro(...$parameters);
}
/**
* Dynamically handle calls to the class.
*
* @param string $method
* @param array $parameters
* @return mixed
*
* @throws \BadMethodCallException
*/
public function __call($method, $parameters)
{
if (! static::hasMacro($method)) {
throw new BadMethodCallException(sprintf(
'Method %s::%s does not exist.', static::class, $method
));
}
$macro = static::$macros[$method];
if ($macro instanceof Closure) {
$macro = $macro->bindTo($this, static::class);
}
return $macro(...$parameters);
}
}