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<?php
namespace League\Plates\Template;
use LogicException;
/**
* A collection of template functions.
*/
class Functions
{
/**
* Array of template functions.
* @var array
*/
protected $functions = array();
/**
* Add a new template function.
* @param string $name;
* @param callback $callback;
* @return Functions
*/
public function add($name, $callback)
{
if ($this->exists($name)) {
throw new LogicException(
'The template function name "' . $name . '" is already registered.'
);
}
$this->functions[$name] = new Func($name, $callback);
return $this;
}
/**
* Remove a template function.
* @param string $name;
* @return Functions
*/
public function remove($name)
{
if (!$this->exists($name)) {
throw new LogicException(
'The template function "' . $name . '" was not found.'
);
}
unset($this->functions[$name]);
return $this;
}
/**
* Get a template function.
* @param string $name
* @return Func
*/
public function get($name)
{
if (!$this->exists($name)) {
throw new LogicException('The template function "' . $name . '" was not found.');
}
return $this->functions[$name];
}
/**
* Check if a template function exists.
* @param string $name
* @return boolean
*/
public function exists($name)
{
return isset($this->functions[$name]);
}
}