From c764717de4a59353a8bb8497a5f508cd7941b86c Mon Sep 17 00:00:00 2001
From: Ilyas Salikhov <salikhoff@gmail.com>
Date: Tue, 30 Jan 2024 18:31:12 +0300
Subject: [PATCH] Compability with PHP 8.1 (class_exists calling)

---
 Extractor/ApiDocExtractor.php | 4 ++--
 Parser/FormTypeParser.php     | 6 +++---
 Parser/JmsMetadataParser.php  | 6 +++---
 Parser/ValidationParser.php   | 4 ++--
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/Extractor/ApiDocExtractor.php b/Extractor/ApiDocExtractor.php
index 440b31b..d347db6 100644
--- a/Extractor/ApiDocExtractor.php
+++ b/Extractor/ApiDocExtractor.php
@@ -627,7 +627,7 @@ class ApiDocExtractor
     {
         if ($actualType == DataTypes::MODEL) {
 
-            if (class_exists($subType)) {
+            if ($subType && class_exists($subType)) {
                 $parts = explode('\\', $subType);
 
                 return sprintf('object (%s)', end($parts));
@@ -642,7 +642,7 @@ class ApiDocExtractor
                 return sprintf('array of %ss', $subType);
             }
 
-            if (class_exists($subType)) {
+            if ($subType && class_exists($subType)) {
                 $parts = explode('\\', $subType);
 
                 return sprintf('array of objects (%s)', end($parts));
diff --git a/Parser/FormTypeParser.php b/Parser/FormTypeParser.php
index bfa02ad..f1e89be 100644
--- a/Parser/FormTypeParser.php
+++ b/Parser/FormTypeParser.php
@@ -182,7 +182,7 @@ class FormTypeParser implements ParserInterface
 
         $subType = is_object($type) ? get_class($type) : $type;
 
-        if (class_exists($subType)) {
+        if ($subType && class_exists($subType)) {
             $parts = explode('\\', $subType);
             $dataType = sprintf('object (%s)', end($parts));
         } else {
@@ -294,7 +294,7 @@ class FormTypeParser implements ParserInterface
                         $actualType   = DataTypes::COLLECTION;
                         $subType      = is_object($embbededType) ? get_class($embbededType) : $embbededType;
 
-                        if (class_exists($subType)) {
+                        if ($subType && class_exists($subType)) {
                             $parts = explode('\\', $subType);
                             $bestType = sprintf('array of objects (%s)', end($parts));
                         } else {
@@ -441,7 +441,7 @@ class FormTypeParser implements ParserInterface
 
     private function implementsType($item)
     {
-        if (!class_exists($item)) {
+        if (null === $item || !class_exists($item)) {
             return false;
         }
 
diff --git a/Parser/JmsMetadataParser.php b/Parser/JmsMetadataParser.php
index dc10658..647ea0a 100644
--- a/Parser/JmsMetadataParser.php
+++ b/Parser/JmsMetadataParser.php
@@ -93,7 +93,7 @@ class JmsMetadataParser implements ParserInterface, PostParserInterface
             return $result;
         }
 
-        if (class_exists($className)) {
+        if ($className && class_exists($className)) {
             $parts = explode('\\', $className);
             $dataType = sprintf('object (%s)', end($parts));
         } else {
@@ -180,7 +180,7 @@ class JmsMetadataParser implements ParserInterface, PostParserInterface
                 }
 
                 // we can use type property also for custom handlers, then we don't have here real class name
-                if (!class_exists($dataType['class'])) {
+                if (!$dataType['class'] || !class_exists($dataType['class'])) {
                     continue;
                 }
 
@@ -252,7 +252,7 @@ class JmsMetadataParser implements ParserInterface, PostParserInterface
         }
 
         // we can use type property also for custom handlers, then we don't have here real class name
-        if (!class_exists($type)) {
+        if (!$type || !class_exists($type)) {
             return array(
                 'normalized' => sprintf("custom handler result for (%s)", $type),
                 'class' => $type,
diff --git a/Parser/ValidationParser.php b/Parser/ValidationParser.php
index af13a1b..4d69f04 100644
--- a/Parser/ValidationParser.php
+++ b/Parser/ValidationParser.php
@@ -84,7 +84,7 @@ class ValidationParser implements ParserInterface, PostParserInterface
             return $parsed;
         }
 
-        if (class_exists($className)) {
+        if ($className && class_exists($className)) {
             $parts = explode('\\', $className);
             $dataType = sprintf('object (%s)', end($parts));
         } else {
@@ -313,7 +313,7 @@ class ValidationParser implements ParserInterface, PostParserInterface
                     if ($childConstraint instanceof Type) {
                         $nestedType = $childConstraint->type;
                         $exp = explode("\\", $nestedType);
-                        if (!class_exists($nestedType)) {
+                        if (!$nestedType || !class_exists($nestedType)) {
                             $nestedType = substr($className, 0, strrpos($className, '\\') + 1).$nestedType;
 
                             if (!class_exists($nestedType)) {