Remove some magic from TypeValidator logic and OptionsResolver type verify logic

Author: drealecs

OptionsResolver.php

@@ -27,6 +27,26 @@
  */
 class OptionsResolver implements Options
 {
+    private const VALIDATION_FUNCTIONS = [
+        'bool' => 'is_bool',
+        'boolean' => 'is_bool',
+        'int' => 'is_int',
+        'integer' => 'is_int',
+        'long' => 'is_int',
+        'float' => 'is_float',
+        'double' => 'is_float',
+        'real' => 'is_float',
+        'numeric' => 'is_numeric',
+        'string' => 'is_string',
+        'scalar' => 'is_scalar',
+        'array' => 'is_array',
+        'iterable' => 'is_iterable',
+        'countable' => 'is_countable',
+        'callable' => 'is_callable',
+        'object' => 'is_object',
+        'resource' => 'is_resource',
+    ];
+
     /**
      * The names of all defined options.
      */
@@ -110,12 +130,6 @@ class OptionsResolver implements Options
 
     private $parentsOptions = [];
 
-    private static $typeAliases = [
-        'boolean' => 'bool',
-        'integer' => 'int',
-        'double' => 'float',
-    ];
-
     /**
      * Sets the default value of a given option.
      *
@@ -995,8 +1009,6 @@ public function offsetGet($option, bool $triggerDeprecation = true)
             $invalidTypes = [];
 
             foreach ($this->allowedTypes[$option] as $type) {
-                $type = self::$typeAliases[$type] ?? $type;
-
                 if ($valid = $this->verifyTypes($type, $value, $invalidTypes)) {
                     break;
                 }
@@ -1007,7 +1019,7 @@ public function offsetGet($option, bool $triggerDeprecation = true)
                 $fmtAllowedTypes = implode('" or "', $this->allowedTypes[$option]);
                 $fmtProvidedTypes = implode('|', array_keys($invalidTypes));
                 $allowedContainsArrayType = \count(array_filter($this->allowedTypes[$option], static function ($item) {
-                    return '[]' === substr(self::$typeAliases[$item] ?? $item, -2);
+                    return '[]' === substr($item, -2);
                 })) > 0;
 
                 if (\is_array($value) && $allowedContainsArrayType) {
@@ -1135,7 +1147,7 @@ private function verifyTypes(string $type, $value, array &$invalidTypes, int $le
             return $valid;
         }
 
-        if (('null' === $type && null === $value) || (\function_exists($func = 'is_'.$type) && $func($value)) || $value instanceof $type) {
+        if (('null' === $type && null === $value) || (isset(self::VALIDATION_FUNCTIONS[$type]) ? self::VALIDATION_FUNCTIONS[$type]($value) : $value instanceof $type)) {
             return true;
         }
 

composer.json

@@ -18,6 +18,7 @@
     "require": {
         "php": "^7.2.5",
         "symfony/deprecation-contracts": "^2.1",
+        "symfony/polyfill-php73": "~1.0",
         "symfony/polyfill-php80": "^1.15"
     },
     "autoload": {