updates for php8 in a new version

Author: detain

composer.json

@@ -9,19 +9,19 @@
             "email": "crodas@php.net"
         }
     ],
-    "version": "v0.1.7",
+    "version": "v0.2.0",
     "minimum-stability": "stable",
     "autoload": {
         "classmap": [
             "src/"
         ]
     },
     "requires": {
-        "php": ">=7.3 || ^8.0"
+        "php": "^8.0"
     },
     "require-dev": {
-        "crodas/phpunit-compat": "^1.7",
-        "fpoirotte/php_parsergenerator": "^0.2.4",
-        "friendsofphp/php-cs-fixer": "^2.18"
+        "crodas/phpunit-compat": "*",
+        "fpoirotte/php_parsergenerator": "*",
+        "friendsofphp/php-cs-fixer": "*"
     }
 }

src/SQLParser/Parser.php

@@ -62,17 +62,17 @@ public function __toString()
         return $this->string;
     }
 
-    public function offsetExists($offset)
+    public function offsetExists(mixed $offset): bool
     {
         return isset($this->metadata[$offset]);
     }
 
-    public function offsetGet($offset)
+    public function offsetGet(mixed $offset): mixed
     {
         return $this->metadata[$offset];
     }
 
-    public function offsetSet($offset, $value)
+    public function offsetSet(mixed $offset, mixed $value): void
     {
         if (null === $offset) {
             if (isset($value[0])) {
@@ -96,7 +96,7 @@ public function offsetSet($offset, $value)
         }
     }
 
-    public function offsetUnset($offset)
+    public function offsetUnset(mixed $offset): void
     {
         unset($this->metadata[$offset]);
     }