/**
* 添加一个参数
* @param Argument $argument 参数
* @throws \LogicException
*/
public function addArgument(Argument $argument)
{
if (isset($this->arguments[$argument->getName()])) {
throw new \LogicException(sprintf('An argument with name "%s" already exists.', $argument->getName()));
}
if ($this->hasAnArrayArgument) {
throw new \LogicException('Cannot add an argument after an array argument.');
}
if ($argument->isRequired() && $this->hasOptional) {
throw new \LogicException('Cannot add a required argument after an optional one.');
}
if ($argument->isArray()) {
$this->hasAnArrayArgument = true;
}
if ($argument->isRequired()) {
++$this->requiredCount;
} else {
$this->hasOptional = true;
}
$this->arguments[$argument->getName()] = $argument;
}