/
DependencyChecker.php
176 lines (151 loc) 路 4.54 KB
/
DependencyChecker.php
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<?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\DI;
use Nette;
use Nette\Utils\Reflection;
use ReflectionClass;
use ReflectionMethod;
/**
* Cache dependencies checker.
*/
class DependencyChecker
{
use Nette\SmartObject;
public const VERSION = 1;
/** @var array of ReflectionClass|\ReflectionFunctionAbstract|string */
private $dependencies = [];
/**
* Adds dependencies to the list.
* @return static
*/
public function add(array $deps)
{
$this->dependencies = array_merge($this->dependencies, $deps);
return $this;
}
/**
* Exports dependencies.
*/
public function export(): array
{
$files = $phpFiles = $classes = $functions = [];
foreach ($this->dependencies as $dep) {
if (is_string($dep)) {
$files[] = $dep;
} elseif ($dep instanceof ReflectionClass) {
if (empty($classes[$name = $dep->getName()])) {
$all = [$name] + class_parents($name) + class_implements($name);
foreach ($all as &$item) {
$all += class_uses($item);
$phpFiles[] = (new ReflectionClass($item))->getFileName();
$classes[$item] = true;
}
}
} elseif ($dep instanceof \ReflectionFunctionAbstract) {
$phpFiles[] = $dep->getFileName();
$functions[] = Reflection::toString($dep);
} else {
throw new Nette\InvalidStateException('Unexpected dependency ' . gettype($dep));
}
}
$classes = array_keys($classes);
$functions = array_unique($functions, SORT_REGULAR);
$hash = self::calculateHash($classes, $functions);
$files = @array_map('filemtime', array_combine($files, $files)); // @ - file may not exist
$phpFiles = @array_map('filemtime', array_combine($phpFiles, $phpFiles)); // @ - file may not exist
return [self::VERSION, $files, $phpFiles, $classes, $functions, $hash];
}
/**
* Are dependencies expired?
*/
public static function isExpired(int $version, array $files, array &$phpFiles, array $classes, array $functions, string $hash): bool
{
try {
$currentFiles = @array_map('filemtime', array_combine($tmp = array_keys($files), $tmp)); // @ - files may not exist
$origPhpFiles = $phpFiles;
$phpFiles = @array_map('filemtime', array_combine($tmp = array_keys($phpFiles), $tmp)); // @ - files may not exist
return $version !== self::VERSION
|| $files !== $currentFiles
|| ($phpFiles !== $origPhpFiles && $hash !== self::calculateHash($classes, $functions));
} catch (\ReflectionException $e) {
return false;
}
}
private static function calculateHash(array $classes, array $functions): string
{
$hash = [];
foreach ($classes as $name) {
$class = new ReflectionClass($name);
$hash[] = [
$name,
Reflection::getUseStatements($class),
$class->isAbstract(),
get_parent_class($name),
class_implements($name),
class_uses($name),
];
foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $prop) {
if ($prop->getDeclaringClass() == $class) { // intentionally ==
$hash[] = [$name, $prop->getName(), $prop->getDocComment()];
}
}
foreach ($class->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
if ($method->getDeclaringClass() == $class) { // intentionally ==
$hash[] = [
$name,
$method->getName(),
$method->getDocComment(),
self::hashParameters($method),
$method->hasReturnType()
? [(string) $method->getReturnType(), $method->getReturnType()->allowsNull()]
: null,
];
}
}
}
$flip = array_flip($classes);
foreach ($functions as $name) {
if (strpos($name, '::')) {
$method = new ReflectionMethod($name);
$class = $method->getDeclaringClass();
if (isset($flip[$class->getName()])) {
continue;
}
$uses = Reflection::getUseStatements($class);
} else {
$method = new \ReflectionFunction($name);
$uses = null;
}
$hash[] = [
$name,
$uses,
$method->getDocComment(),
self::hashParameters($method),
$method->hasReturnType()
? [(string) $method->getReturnType(), $method->getReturnType()->allowsNull()]
: null,
];
}
return md5(serialize($hash));
}
private static function hashParameters(\ReflectionFunctionAbstract $method): array
{
$res = [];
foreach ($method->getParameters() as $param) {
$res[] = [
$param->getName(),
Reflection::getParameterType($param),
$param->allowsNull(),
$param->isVariadic(),
$param->isDefaultValueAvailable()
? [Reflection::getParameterDefaultValue($param)]
: null,
];
}
return $res;
}
}