<?php
namespace eMacros\Runtime\Method;
use eMacros\Runtime\GenericFunction;
class MethodInvoke extends GenericFunction {
/**
* Method name
* @var string
*/
public $method;
public function __construct($method = null) {
$this->method = $method;
}
/**
* Invokes a method with the given arguments
* Usage: (->format (new Datetime) "Y-m-d")
* Returns: mixed
* (non-PHPdoc)
* @see \eMacros\Runtime\GenericFunction::execute()
*/
public function execute(array $arguments) {
if (empty($arguments)) {
throw new \BadFunctionCallException('MethodInvoke: No parameters found.');
}
if (is_null($this->method)) {
if (!isset($arguments[1])) {
throw new \BadFunctionCallException('MethodInvoke: No instance defined.');
}
//check method type
if (!is_string($arguments[0])) {
throw new \InvalidArgumentException(sprintf("MethodInvoke: A value of type string was expected as first argument but %s found instead.", gettype($arguments[0])));
}
//check istance type
if (!is_object($arguments[1])) {
throw new \InvalidArgumentException(sprintf("MethodInvoke: A value of type object was expected but %s found instead.", gettype($arguments[1])));
}
$method = $arguments[0];
$instance = $arguments[1];
$parameters = array_slice($arguments, 2);
}
else {
if (!is_object($arguments[0])) {
throw new \InvalidArgumentException(sprintf("MethodInvoke: A value of type object was expected but %s found instead.", gettype($arguments[0])));
}
$method = $this->method;
$instance = $arguments[0];
$parameters = array_slice($arguments, 1);
}
//check method existence
if (!method_exists($instance, $method)) {
if (!method_exists($instance, '__call')) {
throw new \InvalidArgumentException(sprintf("MethodInvoke: Method '$method' was not found on instance of '%s'.", get_class($instance)));
}
return call_user_func(array($instance, '__call'), $method, $parameters);
}
//check method access and required parameters
$rm = new \ReflectionMethod($instance, $method);
if (!$rm->isPublic()) {
throw new \BadMethodCallException(sprintf("Method '%s' does not have public access.", $method));
}
if ($rm->getNumberOfRequiredParameters() > count($parameters)) {
throw new \BadMethodCallException(sprintf("Method '%s' expects at least %d argument(s).", $method, $rm->getNumberOfRequiredParameters()));
}
return call_user_func_array(array($instance, $method), $parameters);
}
}
?>
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