298 lines
9.3 KiB
PHP
298 lines
9.3 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator;
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use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
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use Symfony\Component\Validator\Exception\InvalidArgumentException;
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use Symfony\Component\Validator\Exception\InvalidOptionsException;
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use Symfony\Component\Validator\Exception\MissingOptionsException;
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/**
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* Contains the properties of a constraint definition.
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*
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* A constraint can be defined on a class, a property or a getter method.
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* The Constraint class encapsulates all the configuration required for
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* validating this class, property or getter result successfully.
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*
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* Constraint instances are immutable and serializable.
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*
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* @property array $groups The groups that the constraint belongs to
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*
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* @author Bernhard Schussek <bschussek@gmail.com>
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*/
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abstract class Constraint
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{
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/**
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* The name of the group given to all constraints with no explicit group.
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*/
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const DEFAULT_GROUP = 'Default';
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/**
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* Marks a constraint that can be put onto classes.
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*/
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const CLASS_CONSTRAINT = 'class';
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/**
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* Marks a constraint that can be put onto properties.
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*/
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const PROPERTY_CONSTRAINT = 'property';
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/**
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* Maps error codes to the names of their constants.
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*/
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protected static $errorNames = [];
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/**
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* Domain-specific data attached to a constraint.
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*
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* @var mixed
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*/
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public $payload;
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/**
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* Returns the name of the given error code.
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*
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* @param string $errorCode The error code
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*
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* @return string The name of the error code
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*
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* @throws InvalidArgumentException If the error code does not exist
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*/
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public static function getErrorName($errorCode)
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{
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if (!isset(static::$errorNames[$errorCode])) {
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throw new InvalidArgumentException(sprintf('The error code "%s" does not exist for constraint of type "%s".', $errorCode, \get_called_class()));
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}
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return static::$errorNames[$errorCode];
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}
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/**
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* Initializes the constraint with options.
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*
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* You should pass an associative array. The keys should be the names of
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* existing properties in this class. The values should be the value for these
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* properties.
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*
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* Alternatively you can override the method getDefaultOption() to return the
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* name of an existing property. If no associative array is passed, this
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* property is set instead.
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*
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* You can force that certain options are set by overriding
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* getRequiredOptions() to return the names of these options. If any
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* option is not set here, an exception is thrown.
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*
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* @param mixed $options The options (as associative array)
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* or the value for the default
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* option (any other type)
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*
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* @throws InvalidOptionsException When you pass the names of non-existing
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* options
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* @throws MissingOptionsException When you don't pass any of the options
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* returned by getRequiredOptions()
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* @throws ConstraintDefinitionException When you don't pass an associative
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* array, but getDefaultOption() returns
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* null
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*/
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public function __construct($options = null)
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{
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$defaultOption = $this->getDefaultOption();
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$invalidOptions = [];
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$missingOptions = array_flip((array) $this->getRequiredOptions());
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$knownOptions = get_object_vars($this);
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// The "groups" option is added to the object lazily
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$knownOptions['groups'] = true;
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if (\is_array($options) && isset($options['value']) && !property_exists($this, 'value')) {
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if (null === $defaultOption) {
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throw new ConstraintDefinitionException(sprintf('No default option is configured for constraint "%s".', \get_class($this)));
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}
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$options[$defaultOption] = $options['value'];
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unset($options['value']);
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}
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if (\is_array($options)) {
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reset($options);
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}
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if ($options && \is_array($options) && \is_string(key($options))) {
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foreach ($options as $option => $value) {
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if (\array_key_exists($option, $knownOptions)) {
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$this->$option = $value;
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unset($missingOptions[$option]);
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} else {
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$invalidOptions[] = $option;
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}
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}
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} elseif (null !== $options && !(\is_array($options) && 0 === \count($options))) {
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if (null === $defaultOption) {
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throw new ConstraintDefinitionException(sprintf('No default option is configured for constraint "%s".', \get_class($this)));
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}
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if (\array_key_exists($defaultOption, $knownOptions)) {
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$this->$defaultOption = $options;
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unset($missingOptions[$defaultOption]);
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} else {
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$invalidOptions[] = $defaultOption;
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}
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}
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if (\count($invalidOptions) > 0) {
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throw new InvalidOptionsException(sprintf('The options "%s" do not exist in constraint "%s".', implode('", "', $invalidOptions), \get_class($this)), $invalidOptions);
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}
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if (\count($missingOptions) > 0) {
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throw new MissingOptionsException(sprintf('The options "%s" must be set for constraint "%s".', implode('", "', array_keys($missingOptions)), \get_class($this)), array_keys($missingOptions));
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}
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}
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/**
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* Sets the value of a lazily initialized option.
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*
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* Corresponding properties are added to the object on first access. Hence
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* this method will be called at most once per constraint instance and
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* option name.
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*
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* @param mixed $value The value to set
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*
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* @throws InvalidOptionsException If an invalid option name is given
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*/
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public function __set(string $option, $value)
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{
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if ('groups' === $option) {
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$this->groups = (array) $value;
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return;
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}
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throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint "%s".', $option, \get_class($this)), [$option]);
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}
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/**
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* Returns the value of a lazily initialized option.
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*
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* Corresponding properties are added to the object on first access. Hence
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* this method will be called at most once per constraint instance and
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* option name.
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*
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* @param string $option The option name
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*
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* @return mixed The value of the option
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*
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* @throws InvalidOptionsException If an invalid option name is given
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*
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* @internal this method should not be used or overwritten in userland code
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*/
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public function __get(string $option)
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{
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if ('groups' === $option) {
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$this->groups = [self::DEFAULT_GROUP];
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return $this->groups;
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}
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throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint "%s".', $option, \get_class($this)), [$option]);
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}
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/**
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* @param string $option The option name
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*
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* @return bool
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*/
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public function __isset(string $option)
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{
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return 'groups' === $option;
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}
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/**
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* Adds the given group if this constraint is in the Default group.
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*
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* @param string $group
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*/
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public function addImplicitGroupName($group)
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{
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if (\in_array(self::DEFAULT_GROUP, $this->groups) && !\in_array($group, $this->groups)) {
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$this->groups[] = $group;
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}
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}
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/**
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* Returns the name of the default option.
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*
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* Override this method to define a default option.
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*
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* @return string|null
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*
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* @see __construct()
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*/
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public function getDefaultOption()
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{
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return null;
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}
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/**
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* Returns the name of the required options.
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*
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* Override this method if you want to define required options.
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*
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* @return array
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*
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* @see __construct()
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*/
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public function getRequiredOptions()
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{
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return [];
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}
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/**
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* Returns the name of the class that validates this constraint.
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*
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* By default, this is the fully qualified name of the constraint class
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* suffixed with "Validator". You can override this method to change that
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* behavior.
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*
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* @return string
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*/
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public function validatedBy()
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{
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return \get_class($this).'Validator';
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}
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/**
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* Returns whether the constraint can be put onto classes, properties or
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* both.
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*
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* This method should return one or more of the constants
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* Constraint::CLASS_CONSTRAINT and Constraint::PROPERTY_CONSTRAINT.
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*
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* @return string|array One or more constant values
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*/
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public function getTargets()
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{
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return self::PROPERTY_CONSTRAINT;
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}
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/**
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* Optimizes the serialized value to minimize storage space.
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*
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* @internal
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*/
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public function __sleep(): array
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{
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// Initialize "groups" option if it is not set
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$this->groups;
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return array_keys(get_object_vars($this));
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}
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}
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