Add getScopeModifiers

Author: sirbrillig

VariableAnalysis/Lib/Helpers.php

@@ -382,6 +382,21 @@ public static function findFunctionCallArguments(File $phpcsFile, $stackPtr)
 		return $argPtrs;
 	}
 
+	/**
+	 * Compatibility handler for phpcs 3.x/4.x
+	 * @return array
+	 */
+	private static function getScopeModifiers()
+	{
+		if (defined('Tokens::SCOPE_MODIFIERS')) {
+			return Tokens::SCOPE_MODIFIERS;
+		}
+		if (isset(Tokens::$scopeModifiers)) {
+			return Tokens::$scopeModifiers;
+		}
+		return [];
+	}
+
 	/**
 	 * Compatibility handler for phpcs 3.x/4.x
 	 * @param array $tokens
@@ -1675,7 +1690,7 @@ public static function isConstructorPromotion(File $phpcsFile, $stackPtr)
 		// 'readonly' keyword, and return true if the previous token is a
 		// visibility keyword (eg: `public`).
 		for ($i = $stackPtr - 1; $i > $functionIndex; $i--) {
-			if (in_array($tokens[$i]['code'], Tokens::$scopeModifiers, true)) {
+			if (in_array($tokens[$i]['code'], self::getScopeModifiers(), true)) {
 				return true;
 			}
 			if (in_array($tokens[$i]['code'], Tokens::$emptyTokens, true)) {