From bb11e62aa2285dfb71cb08d918122b38754363e0 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 18 Aug 2021 11:24:26 +0200
Subject: [PATCH] [ErrorHandler] Turn return-type annotations into deprecations
 by default, add mode to turn them into native types

---
 .github/patch-types.php                               |  1 -
 .github/workflows/unit-tests.yml                      |  2 ++
 src/Symfony/Component/ErrorHandler/CHANGELOG.md       |  6 ++++++
 .../Component/ErrorHandler/DebugClassLoader.php       | 11 ++++++-----
 4 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/.github/patch-types.php b/.github/patch-types.php
index fa806ac42ae14..733790ce6c6a3 100644
--- a/.github/patch-types.php
+++ b/.github/patch-types.php
@@ -15,7 +15,6 @@
     switch (true) {
         case false !== strpos($file = realpath($file), '/vendor/'):
         case false !== strpos($file, '/src/Symfony/Bridge/PhpUnit/'):
-        case false !== strpos($file, '/Attribute/'):
         case false !== strpos($file, '/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Article.php'):
         case false !== strpos($file, '/src/Symfony/Component/Cache/Tests/Fixtures/DriverWrapper.php'):
         case false !== strpos($file, '/src/Symfony/Component/Config/Tests/Fixtures/BadFileName.php'):
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index b2fabdd9c8dbb..030e55abbef96 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -139,9 +139,11 @@ jobs:
         if: "${{ matrix.php == '8.0' && ! matrix.mode }}"
         run: |
           sed -i 's/"\*\*\/Tests\/"//' composer.json
+          git add .
           composer install -q --optimize-autoloader
           SYMFONY_PATCH_TYPE_DECLARATIONS='force=1&php=7.2' php .github/patch-types.php
           SYMFONY_PATCH_TYPE_DECLARATIONS='force=1&php=7.2' php .github/patch-types.php # ensure the script is idempotent
+          git diff --exit-code
           echo PHPUNIT="$PHPUNIT,legacy" >> $GITHUB_ENV
 
       - name: Run tests
diff --git a/src/Symfony/Component/ErrorHandler/CHANGELOG.md b/src/Symfony/Component/ErrorHandler/CHANGELOG.md
index 870933ab8db8f..2976566a1f025 100644
--- a/src/Symfony/Component/ErrorHandler/CHANGELOG.md
+++ b/src/Symfony/Component/ErrorHandler/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+5.4
+---
+
+ * Make `DebugClassLoader` trigger deprecation notices on missing return types
+ * Add `SYMFONY_PATCH_TYPE_DECLARATIONS='force=2'` mode to `DebugClassLoader` to turn annotations into native return types
+
 5.2.0
 -----
 
diff --git a/src/Symfony/Component/ErrorHandler/DebugClassLoader.php b/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
index 159e0daf5ed78..2f2978cb29cf3 100644
--- a/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
+++ b/src/Symfony/Component/ErrorHandler/DebugClassLoader.php
@@ -34,9 +34,8 @@
  * which is a url-encoded array with the follow parameters:
  *  - "force": any value enables deprecation notices - can be any of:
  *      - "phpdoc" to patch only docblock annotations
- *      - "object" to turn union types to the "object" type when possible (not recommended)
- *      - "1" to add all possible return types including magic methods
- *      - "0" to add possible return types excluding magic methods
+ *      - "2" to add all possible return types
+ *      - "1" to add return types but only to tests/final/internal/private methods
  *  - "php": the target version of PHP - e.g. "7.1" doesn't generate "object" types
  *  - "deprecations": "1" to trigger a deprecation notice when a child class misses a
  *                    return type while the parent declares an "@return" annotation
@@ -73,6 +72,7 @@ class DebugClassLoader
         'mixed' => 'mixed',
         'static' => 'static',
         '$this' => 'static',
+        'list' => 'array',
     ];
 
     private const BUILTIN_RETURN_TYPES = [
@@ -127,7 +127,7 @@ public function __construct(callable $classLoader)
         $this->patchTypes += [
             'force' => null,
             'php' => \PHP_MAJOR_VERSION.'.'.\PHP_MINOR_VERSION,
-            'deprecations' => false,
+            'deprecations' => \PHP_VERSION_ID >= 70400,
         ];
 
         if ('phpdoc' === $this->patchTypes['force']) {
@@ -534,7 +534,8 @@ public function checkAnnotations(\ReflectionClass $refl, string $class): array
                     $this->patchTypes['force'] = $forcePatchTypes ?: 'docblock';
                 }
 
-                $canAddReturnType = false !== stripos($method->getFileName(), \DIRECTORY_SEPARATOR.'Tests'.\DIRECTORY_SEPARATOR)
+                $canAddReturnType = 2 === (int) $forcePatchTypes
+                    || false !== stripos($method->getFileName(), \DIRECTORY_SEPARATOR.'Tests'.\DIRECTORY_SEPARATOR)
                     || $refl->isFinal()
                     || $method->isFinal()
                     || $method->isPrivate()