Service

<?php /** * This file is part of the Nette Framework (https://nette.org) * Copyright (c) 2004 David Grudl (https://davidgrudl.com) */ declare(strict_types=1); namespace Nette\Utils; use Nette; use Nette\MemberAccessException; /** * Nette\SmartObject helpers. * @internal */ final class ObjectHelpers { use Nette\StaticClass; /** * @return never * @throws MemberAccessException */ public static function strictGet(string $class, string $name): void { $rc = new \ReflectionClass($class); $hint = self::getSuggestion(array_merge( array_filter($rc->getProperties(\ReflectionProperty::IS_PUBLIC), fn($p) => !$p->isStatic()), self::parseFullDoc($rc, '~^[ \t*]*@property(?:-read)?[ \t]+(?:\S+[ \t]+)??\$(\w+)~m'), ), $name); throw new MemberAccessException("Cannot read an undeclared property $class::\$$name" . ($hint ? ", did you mean \$$hint?" : '.')); } /** * @return never * @throws MemberAccessException */ public static function strictSet(string $class, string $name): void { $rc = new \ReflectionClass($class); $hint = self::getSuggestion(array_merge( array_filter($rc->getProperties(\ReflectionProperty::IS_PUBLIC), fn($p) => !$p->isStatic()), self::parseFullDoc($rc, '~^[ \t*]*@property(?:-write)?[ \t]+(?:\S+[ \t]+)??\$(\w+)~m'), ), $name); throw new MemberAccessException("Cannot write to an undeclared property $class::\$$name" . ($hint ? ", did you mean \$$hint?" : '.')); } /** * @return never * @throws MemberAccessException */ public static function strictCall(string $class, string $method, array $additionalMethods = []): void { $trace = debug_backtrace(0, 3); // suppose this method is called from __call() $context = ($trace[1]['function'] ?? null) === '__call' ? ($trace[2]['class'] ?? null) : null; if ($context && is_a($class, $context, true) && method_exists($context, $method)) { // called parent::$method() $class = get_parent_class($context); } if (method_exists($class, $method)) { // insufficient visibility $rm = new \ReflectionMethod($class, $method); $visibility = $rm->isPrivate() ? 'private ' : ($rm->isProtected() ? 'protected ' : ''); throw new MemberAccessException("Call to {$visibility}method $class::$method() from " . ($context ? "scope $context." : 'global scope.')); } else { $hint = self::getSuggestion(array_merge( get_class_methods($class), self::parseFullDoc(new \ReflectionClass($class), '~^[ \t*]*@method[ \t]+(?:static[ \t]+)?(?:\S+[ \t]+)??(\w+)\(~m'), $additionalMethods, ), $method); throw new MemberAccessException("Call to undefined method $class::$method()" . ($hint ? ", did you mean $hint()?" : '.')); } } /** * @return never * @throws MemberAccessException */ public static function strictStaticCall(string $class, string $method): void { $trace = debug_backtrace(0, 3); // suppose this method is called from __callStatic() $context = ($trace[1]['function'] ?? null) === '__callStatic' ? ($trace[2]['class'] ?? null) : null; if ($context && is_a($class, $context, true) && method_exists($context, $method)) { // called parent::$method() $class = get_parent_class($context); } if (method_exists($class, $method)) { // insufficient visibility $rm = new \ReflectionMethod($class, $method); $visibility = $rm->isPrivate() ? 'private ' : ($rm->isProtected() ? 'protected ' : ''); throw new MemberAccessException("Call to {$visibility}method $class::$method() from " . ($context ? "scope $context." : 'global scope.')); } else { $hint = self::getSuggestion( array_filter((new \ReflectionClass($class))->getMethods(\ReflectionMethod::IS_PUBLIC), fn($m) => $m->isStatic()), $method, ); throw new MemberAccessException("Call to undefined static method $class::$method()" . ($hint ? ", did you mean $hint()?" : '.')); } } /** * Returns array of magic properties defined by annotation @property. * @return array of [name => bit mask] * @internal */ public static function getMagicProperties(string $class): array { static $cache; $props = &$cache[$class]; if ($props !== null) { return $props; } $rc = new \ReflectionClass($class); preg_match_all( '~^ [ \t*]* @property(|-read|-write|-deprecated) [ \t]+ [^\s$]+ [ \t]+ \$ (\w+) ()~mx', (string) $rc->getDocComment(), $matches, PREG_SET_ORDER, ); $props = []; foreach ($matches as [, $type, $name]) { $uname = ucfirst($name); $write = $type !== '-read' && $rc->hasMethod($nm = 'set' . $uname) && ($rm = $rc->getMethod($nm))->name === $nm && !$rm->isPrivate() && !$rm->isStatic(); $read = $type !== '-write' && ($rc->hasMethod($nm = 'get' . $uname) || $rc->hasMethod($nm = 'is' . $uname)) && ($rm = $rc->getMethod($nm))->name === $nm && !$rm->isPrivate() && !$rm->isStatic(); if ($read || $write) { $props[$name] = $read << 0 | ($nm[0] === 'g') << 1 | $rm->returnsReference() << 2 | $write << 3 | ($type === '-deprecated') << 4; } } foreach ($rc->getTraits() as $trait) { $props += self::getMagicProperties($trait->name); } if ($parent = get_parent_class($class)) { $props += self::getMagicProperties($parent); } return $props; } /** * Finds the best suggestion (for 8-bit encoding). * @param (\ReflectionFunctionAbstract|\ReflectionParameter|\ReflectionClass|\ReflectionProperty|string)[] $possibilities * @internal */ public static function getSuggestion(array $possibilities, string $value): ?string { $norm = preg_replace($re = '#^(get|set|has|is|add)(?=[A-Z])#', '+', $value); $best = null; $min = (strlen($value) / 4 + 1) * 10 + .1; foreach (array_unique($possibilities, SORT_REGULAR) as $item) { $item = $item instanceof \Reflector ? $item->name : $item; if ($item !== $value && ( ($len = levenshtein($item, $value, 10, 11, 10)) < $min || ($len = levenshtein(preg_replace($re, '*', $item), $norm, 10, 11, 10)) < $min )) { $min = $len; $best = $item; } } return $best; } private static function parseFullDoc(\ReflectionClass $rc, string $pattern): array { do { $doc[] = $rc->getDocComment(); $traits = $rc->getTraits(); while ($trait = array_pop($traits)) { $doc[] = $trait->getDocComment(); $traits += $trait->getTraits(); } } while ($rc = $rc->getParentClass()); return preg_match_all($pattern, implode('', $doc), $m) ? $m[1] : []; } /** * Checks if the public non-static property exists. * Returns 'event' if the property exists and has event like name * @internal */ public static function hasProperty(string $class, string $name): bool|string { static $cache; $prop = &$cache[$class][$name]; if ($prop === null) { $prop = false; try { $rp = new \ReflectionProperty($class, $name); if ($rp->isPublic() && !$rp->isStatic()) { $prop = $name >= 'onA' && $name < 'on_' ? 'event' : true; } } catch (\ReflectionException $e) { } } return $prop; } }

Service Section

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