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| 1 | <?php |
| 2 | |
| 3 | // FunctionsAndConstants |
| 4 | |
| 5 | namespace BrianHenryIE\Strauss { |
| 6 | |
| 7 | use BrianHenryIE\Strauss\Types\AutoloadAliasInterface; |
| 8 | |
| 9 | /** |
| 10 | * @see AutoloadAliasInterface |
| 11 | * |
| 12 | * @phpstan-type ClassAliasArray array{'type':'class',isabstract:bool,classname:string,namespace?:string,extends:string,implements:array<string>} |
| 13 | * @phpstan-type InterfaceAliasArray array{'type':'interface',interfacename:string,namespace?:string,extends:array<string>} |
| 14 | * @phpstan-type TraitAliasArray array{'type':'trait',traitname:string,namespace?:string,use:array<string>} |
| 15 | * @phpstan-type EnumAliasArray array{'type':'enum',enumname:string,namespace?:string,concrete:string} |
| 16 | * @phpstan-type AutoloadAliasArray array<string,ClassAliasArray|InterfaceAliasArray|TraitAliasArray|EnumAliasArray> |
| 17 | */ |
| 18 | class AliasAutoloader |
| 19 | { |
| 20 | private string $includeFilePath; |
| 21 | |
| 22 | /** |
| 23 | * @var AutoloadAliasArray |
| 24 | */ |
| 25 | private array $autoloadAliases = []; |
| 26 | |
| 27 | public function __construct() |
| 28 | { |
| 29 | $this->includeFilePath = __DIR__ . '/autoload_alias.php'; |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param string $class |
| 34 | */ |
| 35 | public function autoload($class): void |
| 36 | { |
| 37 | if (!isset($this->autoloadAliases[$class])) { |
| 38 | return; |
| 39 | } |
| 40 | switch ($this->autoloadAliases[$class]['type']) { |
| 41 | case 'class': |
| 42 | $this->load( |
| 43 | $this->classTemplate( |
| 44 | $this->autoloadAliases[$class] |
| 45 | ) |
| 46 | ); |
| 47 | break; |
| 48 | case 'interface': |
| 49 | $this->load( |
| 50 | $this->interfaceTemplate( |
| 51 | $this->autoloadAliases[$class] |
| 52 | ) |
| 53 | ); |
| 54 | break; |
| 55 | case 'trait': |
| 56 | $this->load( |
| 57 | $this->traitTemplate( |
| 58 | $this->autoloadAliases[$class] |
| 59 | ) |
| 60 | ); |
| 61 | break; |
| 62 | case 'enum': |
| 63 | // Enums are final so cannot be aliased with an `extends` shim like classes are; `class_alias()` |
| 64 | // makes the original name a true alias of the renamed enum, preserving case identity (`===`), |
| 65 | // `match` arms, `::cases()`, `::from()` and `instanceof` the enum itself. Unlike the class shim, |
| 66 | // the alias does not implement the enum's original interface names, so `instanceof` against an |
| 67 | // original interface name is false. Enums require PHP 8.1, but this only executes when an enum |
| 68 | // is autoloaded by its original name, i.e. on a runtime already using enums. |
| 69 | \class_alias( |
| 70 | $this->autoloadAliases[$class]['concrete'], |
| 71 | $class |
| 72 | ); |
| 73 | break; |
| 74 | default: |
| 75 | // Never. |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | private function load(string $includeFile): void |
| 81 | { |
| 82 | file_put_contents($this->includeFilePath, $includeFile); |
| 83 | include $this->includeFilePath; |
| 84 | file_exists($this->includeFilePath) && unlink($this->includeFilePath); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * @param ClassAliasArray $class |
| 89 | */ |
| 90 | private function classTemplate(array $class): string |
| 91 | { |
| 92 | $abstract = $class['isabstract'] ? 'abstract ' : ''; |
| 93 | $classname = $class['classname']; |
| 94 | if (isset($class['namespace'])) { |
| 95 | $namespace = "namespace {$class['namespace']};"; |
| 96 | $extends = '\\' . $class['extends']; |
| 97 | $implements = empty($class['implements']) ? '' |
| 98 | : ' implements \\' . implode(', \\', $class['implements']); |
| 99 | } else { |
| 100 | $namespace = ''; |
| 101 | $extends = $class['extends']; |
| 102 | $implements = !empty($class['implements']) ? '' |
| 103 | : ' implements ' . implode(', ', $class['implements']); |
| 104 | } |
| 105 | return <<<EOD |
| 106 | <?php |
| 107 | $namespace |
| 108 | $abstract class $classname extends $extends $implements {} |
| 109 | EOD; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * @param InterfaceAliasArray $interface |
| 114 | */ |
| 115 | private function interfaceTemplate(array $interface): string |
| 116 | { |
| 117 | $interfacename = $interface['interfacename']; |
| 118 | $namespace = isset($interface['namespace']) |
| 119 | ? "namespace {$interface['namespace']};" : ''; |
| 120 | $extends = isset($interface['namespace']) |
| 121 | ? '\\' . implode('\\ ,', $interface['extends']) |
| 122 | : implode(', ', $interface['extends']); |
| 123 | return <<<EOD |
| 124 | <?php |
| 125 | $namespace |
| 126 | interface $interfacename extends $extends {} |
| 127 | EOD; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * @param TraitAliasArray $trait |
| 132 | */ |
| 133 | private function traitTemplate(array $trait): string |
| 134 | { |
| 135 | $traitname = $trait['traitname']; |
| 136 | $namespace = isset($trait['namespace']) |
| 137 | ? "namespace {$trait['namespace']};" : ''; |
| 138 | $uses = isset($trait['namespace']) |
| 139 | ? '\\' . implode(';' . PHP_EOL . ' use \\', $trait['use']) |
| 140 | : implode(';' . PHP_EOL . ' use ', $trait['use']); |
| 141 | return <<<EOD |
| 142 | <?php |
| 143 | $namespace |
| 144 | trait $traitname { |
| 145 | use $uses; |
| 146 | } |
| 147 | EOD; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | spl_autoload_register([ new AliasAutoloader(), 'autoload' ]); |
| 152 | } |