Returns whether the argument is optional.
| public isOptional ( ) : boolean | ||
| 리턴 | boolean | Returns `true` if the flag {@link OPTIONAL} was passed to the constructor. |
/**
* Creates an input argument for the given argument.
*
* @param Argument $argument The argument.
*
* @return InputArgument The created input argument.
*/
private function adaptArgument(Argument $argument)
{
$mode = null;
if ($argument->isMultiValued()) {
$mode |= InputArgument::IS_ARRAY;
}
if ($argument->isOptional()) {
$mode |= InputArgument::OPTIONAL;
}
if ($argument->isRequired()) {
$mode |= InputArgument::REQUIRED;
}
return new InputArgument($argument->getName(), $mode, $argument->getDescription(), $argument->getDefaultValue());
}
/**
* Adds an argument at the end of the argument list.
*
* The existing arguments stored in the builder are preserved.
*
* You cannot add arguments after adding a multi-valued argument. If you do
* so, this method throws an exception.
*
* Adding required arguments after optional arguments is not supported.
* Also in this case an exception is thrown.
*
* @param Argument $argument The argument to add.
*
* @return static The current instance.
*
* @throws CannotAddArgumentException If the argument cannot be added.
*/
public function addArgument(Argument $argument)
{
$name = $argument->getName();
if ($this->hasArgument($name)) {
throw CannotAddArgumentException::existsAlready($name);
}
if ($this->hasMultiValuedArgument()) {
throw CannotAddArgumentException::cannotAddAfterMultiValued();
}
if ($argument->isRequired() && $this->hasOptionalArgument()) {
throw CannotAddArgumentException::cannotAddRequiredAfterOptional();
}
if ($argument->isMultiValued()) {
$this->hasMultiValuedArg = true;
}
if ($argument->isOptional()) {
$this->hasOptionalArg = true;
}
$this->arguments[$name] = $argument;
return $this;
}
public function testMultiValuedArgumentWithDefaultValue()
{
$argument = new Argument('argument', Argument::MULTI_VALUED, null, array('one', 'two'));
$this->assertSame('argument', $argument->getName());
$this->assertFalse($argument->isRequired());
$this->assertTrue($argument->isOptional());
$this->assertTrue($argument->isMultiValued());
$this->assertSame(array('one', 'two'), $argument->getDefaultValue());
$this->assertNull($argument->getDescription());
}