public function build(\reflectionClass $class, &$instance = null)
{
$this->factory = null;
if ($class->isInterface() === false && $class->isAbstract() === false) {
$constructor = $class->getConstructor();
if ($constructor === null || $constructor->isPublic() === true) {
$constructorParameters = $closureParameters = array();
if ($constructor !== null) {
$this->allArgumentsAreOptional = $constructor->getNumberOfRequiredParameters() === 0;
foreach ($constructor->getParameters() as $position => $parameter) {
$closureParameters[$position] = ($parameter->isPassedByReference() === false ? '' : '& ') . ($constructorParameters[$position] = '$' . $parameter->getName());
if (self::isVariadic($parameter)) {
$closureParameters[$position] = '...' . $closureParameters[$position];
$constructorParameters[$position] = '...' . $constructorParameters[$position];
}
switch (true) {
case $parameter->isDefaultValueAvailable():
$defaultValue = var_export($parameter->getDefaultValue(), true);
break;
case $parameter->isOptional() && self::isVariadic($parameter) === false:
$defaultValue = 'null';
break;
default:
$defaultValue = null;
}
if ($defaultValue !== null) {
$closureParameters[$position] .= ' = ' . $defaultValue;
}
}
}
if ($constructor === null || sizeof($closureParameters) <= 0) {
$this->factory = function () use(&$instance, $class) {
return $instance = $class->newInstanceArgs(func_get_args());
};
} else {
$this->factory = eval('return function(' . join(', ', $closureParameters) . ') use (& $instance) { return ($instance = new ' . $class->getName() . '(' . join(', ', $constructorParameters) . ')); };');
}
}
}
return $this;
}
