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<?php |
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|
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/** |
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* This file is part of the Nette Framework (https://nette.org) |
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* Copyright (c) 2004 David Grudl (https://davidgrudl.com) |
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*/ |
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declare (strict_types=1); |
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namespace Packetery\Nette; |
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|
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use Packetery\Nette\Utils\ObjectHelpers; |
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/** |
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* Strict class for better experience. |
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* - 'did you mean' hints |
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* - access to undeclared members throws exceptions |
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* - support for @property annotations |
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* - support for calling event handlers stored in $onEvent via onEvent() |
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*/ |
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trait SmartObject |
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{ |
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/** |
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* @throws MemberAccessException |
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*/ |
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public function __call(string $name, array $args) |
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{ |
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$class = static::class; |
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if (ObjectHelpers::hasProperty($class, $name) === 'event') { |
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// calling event handlers |
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$handlers = $this->{$name} ?? null; |
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if (\is_iterable($handlers)) { |
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foreach ($handlers as $handler) { |
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$handler(...$args); |
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} |
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} elseif ($handlers !== null) { |
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throw new UnexpectedValueException("Property {$class}::\${$name} must be iterable or null, " . \gettype($handlers) . ' given.'); |
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} |
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} else { |
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ObjectHelpers::strictCall($class, $name); |
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} |
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} |
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/** |
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* @throws MemberAccessException |
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*/ |
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public static function __callStatic(string $name, array $args) |
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{ |
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ObjectHelpers::strictStaticCall(static::class, $name); |
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} |
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/** |
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* @return mixed |
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* @throws MemberAccessException if the property is not defined. |
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*/ |
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public function &__get(string $name) |
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{ |
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$class = static::class; |
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if ($prop = ObjectHelpers::getMagicProperties($class)[$name] ?? null) { |
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// property getter |
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if (!($prop & 0b1)) { |
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throw new MemberAccessException("Cannot read a write-only property {$class}::\${$name}."); |
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} |
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$m = ($prop & 0b10 ? 'get' : 'is') . $name; |
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if ($prop & 0b100) { |
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// return by reference |
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return $this->{$m}(); |
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} else { |
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$val = $this->{$m}(); |
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return $val; |
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} |
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} else { |
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ObjectHelpers::strictGet($class, $name); |
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} |
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} |
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/** |
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* @param mixed $value |
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* @return void |
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* @throws MemberAccessException if the property is not defined or is read-only |
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*/ |
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public function __set(string $name, $value) |
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{ |
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$class = static::class; |
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if (ObjectHelpers::hasProperty($class, $name)) { |
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// unsetted property |
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$this->{$name} = $value; |
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} elseif ($prop = ObjectHelpers::getMagicProperties($class)[$name] ?? null) { |
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// property setter |
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if (!($prop & 0b1000)) { |
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throw new MemberAccessException("Cannot write to a read-only property {$class}::\${$name}."); |
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} |
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$this->{'set' . $name}($value); |
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} else { |
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ObjectHelpers::strictSet($class, $name); |
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} |
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} |
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/** |
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* @return void |
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* @throws MemberAccessException |
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*/ |
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public function __unset(string $name) |
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{ |
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$class = static::class; |
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if (!ObjectHelpers::hasProperty($class, $name)) { |
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throw new MemberAccessException("Cannot unset the property {$class}::\${$name}."); |
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} |
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} |
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public function __isset(string $name) : bool |
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{ |
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return isset(ObjectHelpers::getMagicProperties(static::class)[$name]); |
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} |
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} |
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