Support Symfony 7 by adding return types conditionally

phpcs.xml.dist

@@ -34,6 +34,10 @@
         <exclude name="Squiz.NamingConventions.ValidVariableName.PublicHasUnderscore"/>
     </rule>
 
+    <rule ref="Generic.Classes.DuplicateClassName.Found">
+        <exclude-pattern>*/src/Tools/Console/Command/CommandCompatibility.php</exclude-pattern>
+    </rule>
+
     <rule ref="PSR2.Classes.PropertyDeclaration.Underscore">
         <exclude-pattern>*/src/Configuration.php</exclude-pattern>
         <exclude-pattern>*/src/Connection.php</exclude-pattern>
@@ -70,6 +74,7 @@
     </rule>
 
     <rule ref="PSR1.Classes.ClassDeclaration.MultipleClasses">
+        <exclude-pattern>*/src/Tools/Console/Command/CommandCompatibility.php</exclude-pattern>
         <exclude-pattern>*/tests/*</exclude-pattern>
     </rule>
 

psalm.xml.dist

@@ -589,6 +589,11 @@
                 <file name="tests/Functional/Schema/SchemaManagerFunctionalTestCase.php"/>
             </errorLevel>
         </DocblockTypeContradiction>
+        <DuplicateClass>
+            <errorLevel type="suppress">
+                <file name="src/Tools/Console/Command/CommandCompatibility.php"/>
+            </errorLevel>
+        </DuplicateClass>
         <FalsableReturnStatement>
             <errorLevel type="suppress">
                 <!--

src/Tools/Console/Command/CommandCompatibility.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\DBAL\Tools\Console\Command;
+
+use ReflectionMethod;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+if ((new ReflectionMethod(Command::class, 'execute'))->hasReturnType()) {
+    /** @internal */
+    trait CommandCompatibility
+    {
+        protected function execute(InputInterface $input, OutputInterface $output): int
+        {
+            return $this->doExecute($input, $output);
+        }
+    }
+} else {
+    /** @internal */
+    trait CommandCompatibility
+    {
+        /**
+         * {@inheritDoc}
+         *
+         * @return int
+         */
+        protected function execute(InputInterface $input, OutputInterface $output)
+        {
+            return $this->doExecute($input, $output);
+        }
+    }
+}

src/Tools/Console/Command/ReservedWordsCommand.php

@@ -34,6 +34,8 @@
 /** @deprecated Use database documentation instead. */
 class ReservedWordsCommand extends Command
 {
+    use CommandCompatibility;
+
     /** @var array<string,KeywordList> */
     private array $keywordLists;
 
@@ -136,14 +138,8 @@ protected function configure()
 EOT);
     }
 
-    /**
-     * {@inheritDoc}
-     *
-     * @return int
-     *
-     * @throws Exception
-     */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    /** @throws Exception */
+    private function doExecute(InputInterface $input, OutputInterface $output): int
     {
         $output->writeln(
             '<comment>The <info>dbal:reserved-words</info> command is deprecated.</comment>'

src/Tools/Console/Command/RunSqlCommand.php

@@ -26,6 +26,8 @@
  */
 class RunSqlCommand extends Command
 {
+    use CommandCompatibility;
+
     private ConnectionProvider $connectionProvider;
 
     public function __construct(ConnectionProvider $connectionProvider)
@@ -55,14 +57,8 @@ protected function configure()
 EOT);
     }
 
-    /**
-     * {@inheritDoc}
-     *
-     * @return int
-     *
-     * @throws Exception
-     */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    /** @throws Exception */
+    private function doExecute(InputInterface $input, OutputInterface $output): int
     {
         $conn = $this->getConnection($input);
         $io   = new SymfonyStyle($input, $output);