/**
* Attempt to set a field using the provided updater function.
*
* @param string $key
* @param callable $updater
* @param mixed|null $default
*
* @return static
*/
public function update($key, callable $updater, $default = null)
{
return $this->insert($key, $updater(Maybe::fromMaybe($default, $this->lookup($key))));
}
/**
* Get the type annotation for a field.
*
* @param string $fieldName
*
* @return AbstractTypeConstraint
*/
public function getFieldType($fieldName)
{
return Maybe::fromMaybe(Boa::any(), $this->getFieldAnnotation($fieldName, static::ANNOTATION_TYPE));
}
/**
* Add one or more constraints to a field.
*
* @param string $field
* @param AbstractConstraint|AbstractConstraint[] $constraint
*
* @throws MismatchedArgumentTypesException
* @return $this
*/
public function let($field, $constraint)
{
Arguments::define(Boa::string(), Boa::either(Boa::instance(AbstractConstraint::class), Boa::arrOf(Boa::instance(AbstractConstraint::class))))->check($field, $constraint);
if (!$this->constraints->member($field)) {
$this->constraints = $this->constraints->insert($field, ArrayList::zero());
}
if (!is_array($constraint)) {
$constraint = [$constraint];
}
$this->constraints = $this->constraints->insert($field, Maybe::fromMaybe(ArrayList::zero(), $this->constraints->lookup($field))->append(ArrayList::of($constraint)));
return $this;
}
/**
* @param string $fieldName
*
* @return bool
*/
public function getFieldRequired($fieldName)
{
return Maybe::fromMaybe(false, $this->getFieldAnnotation($fieldName, static::ANNOTATION_REQUIRED));
}
public function testFromMaybe()
{
$just = Maybe::of('doge');
$nothing = Maybe::nothing();
$this->assertEqualsMatrix([['doge', Maybe::fromMaybe('default', $just)], ['default', Maybe::fromMaybe('default', $nothing)]]);
}
