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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ExpressionLanguage;
/**
* Represents a function that can be used in an expression.
*
* A function is defined by two PHP callables. The callables are used
* by the language to compile and/or evaluate the function.
*
* The "compiler" function is used at compilation time and must return a
* PHP representation of the function call (it receives the function
* arguments as arguments).
*
* The "evaluator" function is used for expression evaluation and must return
* the value of the function call based on the values defined for the
* expression (it receives the values as a first argument and the function
* arguments as remaining arguments).
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ExpressionFunction
{
private $name;
private $compiler;
private $evaluator;
/**
* @param string $name The function name
* @param callable $compiler A callable able to compile the function
* @param callable $evaluator A callable able to evaluate the function
*/
public function __construct($name, $compiler, $evaluator)
{
$this->name = $name;
$this->compiler = $compiler;
$this->evaluator = $evaluator;
}
public function getName()
{
return $this->name;
}
public function getCompiler()
{
return $this->compiler;
}
public function getEvaluator()
{
return $this->evaluator;
}
}
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