ReferenceSniff: Fix false positive with bitwise and (#162)

Co-authored-by: matt <[email protected]>
Co-authored-by: Michał Bundyra <[email protected]>

Author: 3 people

src/WebimpressCodingStandard/Sniffs/Formatting/ReferenceSniff.php

@@ -11,11 +11,9 @@
 use function in_array;
 
 use const T_BITWISE_AND;
-use const T_COMMA;
 use const T_NEW;
 use const T_OPEN_PARENTHESIS;
 use const T_OPEN_SHORT_ARRAY;
-use const T_STRING;
 use const T_WHITESPACE;
 
 class ReferenceSniff implements Sniff
@@ -35,6 +33,10 @@ public function process(File $phpcsFile, $stackPtr)
     {
         $tokens = $phpcsFile->getTokens();
 
+        if (! $phpcsFile->isReference($stackPtr)) {
+            return;
+        }
+
         $next = $phpcsFile->findNext(Tokens::$emptyTokens, $stackPtr + 1, null, true);
         if ($tokens[$next]['code'] === T_NEW) {
             $error = 'Reference operator is redundant before new keyword (objects are always passed by reference)';
@@ -49,16 +51,6 @@ public function process(File $phpcsFile, $stackPtr)
 
         $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, $stackPtr - 1, null, true);
 
-        $tokenCodes = Tokens::$assignmentTokens + [
-            T_COMMA => T_COMMA,
-            T_OPEN_PARENTHESIS => T_OPEN_PARENTHESIS,
-            T_OPEN_SHORT_ARRAY => T_OPEN_SHORT_ARRAY,
-            T_STRING => T_STRING,
-        ];
-        if (! in_array($tokens[$prev]['code'], $tokenCodes, true)) {
-            return;
-        }
-
         // One space before &
         if ($tokens[$prev]['line'] === $tokens[$stackPtr]['line']
             && ! in_array($tokens[$stackPtr - 1]['code'], [T_WHITESPACE, T_OPEN_PARENTHESIS, T_OPEN_SHORT_ARRAY], true)

test/Sniffs/Formatting/ReferenceUnitTest.inc

@@ -18,3 +18,13 @@ $a = &new \DateTime();
 $b = & new \DateTime();
 $c =& new \DateTime();
 $d =&new \DateTime();
+
+class ReferenceClass
+{
+    public int $flag = 1;
+
+    public function isFlagged()
+    {
+        return (bool) ($this->flag & 4);
+    }
+}

test/Sniffs/Formatting/ReferenceUnitTest.inc.fixed

@@ -18,3 +18,13 @@ $a = new \DateTime();
 $b =  new \DateTime();
 $c = new \DateTime();
 $d =new \DateTime();
+
+class ReferenceClass
+{
+    public int $flag = 1;
+
+    public function isFlagged()
+    {
+        return (bool) ($this->flag & 4);
+    }
+}