[Step 2 Upgrade] Bump requirement to php 8.0

.github/workflows/phpunit.yml

@@ -16,7 +16,7 @@ jobs:
           - "lowest"
           - "highest"
         php-version:
-          - "7.4"
+          - "8.0"
         operating-system:
           - "ubuntu-latest"
 

composer.json

@@ -22,11 +22,12 @@
     }
   },
   "require": {
-    "php": ">=7.4",
+    "php": ">=8.0",
     "nikic/php-parser": "^4.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.0"
+    "phpunit/phpunit": "^9.0",
+    "tracy/tracy": "^2.10"
   },
   "extra": {
     "branch-alias": {

phpunit.xml.dist

@@ -1,19 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
-         colors="true"
-         bootstrap="./vendor/autoload.php"
-        >
-    <testsuites>
-        <testsuite name="Parser Reflection Test Suite">
-            <directory>./tests/</directory>
-        </testsuite>
-    </testsuites>
-
-    <filter>
-        <whitelist>
-            <directory>./src/</directory>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd" colors="true" bootstrap="./vendor/autoload.php">
+  <coverage>
+    <include>
+      <directory>./src/</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="Parser Reflection Test Suite">
+      <directory>./tests/</directory>
+    </testsuite>
+  </testsuites>
 </phpunit>

src/ReflectionClassConstant.php

@@ -200,7 +200,7 @@ public function __toString()
         ];
         $value = $this->getValue();
         $type  = gettype($value);
-        if (PHP_VERSION_ID >= 70300 && isset($typeMap[$type])) {
+        if (isset($typeMap[$type])) {
             $type = $typeMap[$type];
         }
         $valueType = new ReflectionType($type, null, true);

src/ReflectionFunction.php

@@ -77,11 +77,11 @@ public function getClosure()
     /**
      * {@inheritDoc}
      */
-    public function invoke($args = null)
+    public function invoke(mixed ...$args)
     {
         $this->initializeInternalReflection();
 
-        return parent::invoke(...func_get_args());
+        return parent::invoke(...$args);
     }
 
     /**

src/ReflectionMethod.php

@@ -203,17 +203,17 @@ public function getPrototype()
     /**
      * {@inheritDoc}
      */
-    public function invoke($object, $args = null)
+    public function invoke(?object $object, mixed ...$args): mixed
     {
         $this->initializeInternalReflection();
 
-        return parent::invoke(...func_get_args());
+        return parent::invoke($object, ...$args);
     }
 
     /**
      * {@inheritDoc}
      */
-    public function invokeArgs($object, array $args)
+    public function invokeArgs(?object $object, array $args): mixed
     {
         $this->initializeInternalReflection();
 

src/ReflectionType.php

@@ -14,6 +14,7 @@
 
 use ReflectionNamedType;
 use ReflectionType as BaseReflectionType;
+use ReflectionUnionType;
 
 /**
  * ReflectionType implementation
@@ -92,8 +93,8 @@ public static function convertToDisplayType(BaseReflectionType $type)
 
         $displayType = ltrim($displayType, '\\');
 
-        if ($type->allowsNull()) {
-            $displayType .= ' or NULL';
+        if ($type->allowsNull() && ! $type instanceof ReflectionUnionType) {
+            $displayType = '?' . $displayType;
         }
 
         return $displayType;

src/Traits/ReflectionClassLikeTrait.php

@@ -221,7 +221,7 @@ public function getConstant($name)
     /**
      * {@inheritDoc}
      */
-    public function getConstants()
+    public function getConstants(?int $filter = null): array
     {
         if (!isset($this->constants)) {
             $this->constants = $this->recursiveCollect(
@@ -417,10 +417,6 @@ public function getModifiers()
             $modifiers += \ReflectionClass::IS_FINAL;
         }
 
-        if (PHP_VERSION_ID < 70000 && $this->isTrait()) {
-            $modifiers += \ReflectionClass::IS_EXPLICIT_ABSTRACT;
-        }
-
         if ($this->classLikeNode instanceof Class_ && $this->classLikeNode->isAbstract()) {
             $modifiers += \ReflectionClass::IS_EXPLICIT_ABSTRACT;
         }
@@ -553,7 +549,7 @@ public function getReflectionConstant($name)
     /**
      * @inheritDoc
      */
-    public function getReflectionConstants()
+    public function getReflectionConstants(?int $filter = null): array
     {
         if (!isset($this->classConstants)) {
             $directClassConstants = ReflectionClassConstant::collectFromClassNode(
@@ -965,12 +961,12 @@ public function newInstanceArgs(array $args = [])
      *
      * @return object
      */
-    public function newInstanceWithoutConstructor($args = null)
+    public function newInstanceWithoutConstructor()
     {
         $function = __FUNCTION__;
         $this->initializeInternalReflection();
 
-        return parent::$function($args);
+        return parent::$function();
     }
 
     /**

tests/AbstractTestCase.php

@@ -71,16 +71,9 @@ public function testCoverAllMethods()
     public function getFilesToAnalyze()
     {
         $files = ['PHP5.5' => [__DIR__ . '/Stub/FileWithClasses55.php']];
-
-        if (PHP_VERSION_ID >= 50600) {
-            $files['PHP5.6'] = [__DIR__ . '/Stub/FileWithClasses56.php'];
-        }
-        if (PHP_VERSION_ID >= 70000) {
-            $files['PHP7.0'] = [__DIR__ . '/Stub/FileWithClasses70.php'];
-        }
-        if (PHP_VERSION_ID >= 70100) {
-            $files['PHP7.1'] = [__DIR__ . '/Stub/FileWithClasses71.php'];
-        }
+        $files['PHP5.6'] = [__DIR__ . '/Stub/FileWithClasses56.php'];
+        $files['PHP7.0'] = [__DIR__ . '/Stub/FileWithClasses70.php'];
+        $files['PHP7.1'] = [__DIR__ . '/Stub/FileWithClasses71.php'];
 
         return $files;
     }

tests/ReflectionClassTest.php

@@ -30,7 +30,7 @@ class ReflectionClassTest extends AbstractTestCase
      */
     public function testGetModifiers($fileName)
     {
-        if (PHP_VERSION_ID >= 70400) {
+        if (PHP_VERSION_ID >= 80000) {
             $this->markTestSkipped('TODO: Fix mapping and logic of modifiers');
         }
         $mask =

tests/ReflectionFunctionTest.php

@@ -34,9 +34,7 @@ public function testGeneralInfoGetters()
             'returnsReference', 'getClosureScopeClass', 'getClosureThis'
         ];
 
-        if (PHP_VERSION_ID >= 70000) {
-            $allNameGetters[] = 'hasReturnType';
-        }
+        $allNameGetters[] = 'hasReturnType';
 
         foreach ($this->parsedRefFile->getFileNamespaces() as $fileNamespace) {
             foreach ($fileNamespace->getFunctions() as $refFunction) {
@@ -72,7 +70,7 @@ public function testCoverAllMethods()
         }
 
         if ($allMissedMethods) {
-            $this->markTestIncomplete('Methods ' . join($allMissedMethods, ', ') . ' are not implemented');
+            $this->markTestIncomplete('Methods ' . implode(', ', $allMissedMethods) . ' are not implemented');
         }
     }
 
@@ -105,10 +103,6 @@ public function testInvokeArgsMethod()
 
     public function testGetReturnTypeMethod()
     {
-        if (PHP_VERSION_ID < 70000) {
-            $this->markTestSkipped('Test available only for PHP7.0 and newer');
-        }
-
         $fileName = stream_resolve_include_path(__DIR__ . self::STUB_FILE70);
 
         $reflectionFile = new ReflectionFile($fileName);
@@ -129,12 +123,7 @@ public function testGetReturnTypeMethod()
                     $originalReturnType = $originalRefFunction->getReturnType();
                     $this->assertSame($originalReturnType->allowsNull(), $parsedReturnType->allowsNull());
                     $this->assertSame($originalReturnType->isBuiltin(), $parsedReturnType->isBuiltin());
-                    // TODO: To prevent deprecation error in tests
-                    if (PHP_VERSION_ID < 70400) {
-                        $this->assertSame($originalReturnType->__toString(), $parsedReturnType->__toString());
-                    } else {
-                        $this->assertSame($originalReturnType->getName(), $parsedReturnType->__toString());
-                    }
+                    $this->assertSame($originalReturnType->getName(), $parsedReturnType->__toString());
                 } else {
                     $this->assertSame(
                         $originalRefFunction->getReturnType(),

tests/ReflectionMethodTest.php

@@ -146,14 +146,9 @@ protected function getGettersToCheck()
             'getNumberOfRequiredParameters', 'returnsReference', 'getClosureScopeClass', 'getClosureThis'
         ];
 
-        if (PHP_VERSION_ID >= 50600) {
-            $allNameGetters[] = 'isVariadic';
-            $allNameGetters[] = 'isGenerator';
-        }
-
-        if (PHP_VERSION_ID >= 70000) {
-            $allNameGetters[] = 'hasReturnType';
-        }
+        $allNameGetters[] = 'isVariadic';
+        $allNameGetters[] = 'isGenerator';
+        $allNameGetters[] = 'hasReturnType';
 
         return $allNameGetters;
     }

tests/ReflectionParameterTest.php

@@ -34,12 +34,8 @@ public function testGeneralInfoGetters($fileName)
         $onlyWithDefaultValues = array_flip([
             'getDefaultValue', 'getDefaultValueConstantName', 'isDefaultValueConstant'
         ]);
-        if (PHP_VERSION_ID >= 50600) {
-            $allNameGetters[] = 'isVariadic';
-        }
-        if (PHP_VERSION_ID >= 70000) {
-            $allNameGetters[] = 'hasType';
-        }
+        $allNameGetters[] = 'isVariadic';
+        $allNameGetters[] = 'hasType';
 
         foreach ($this->parsedRefFile->getFileNamespaces() as $fileNamespace) {
             foreach ($fileNamespace->getFunctions() as $refFunction) {
@@ -75,13 +71,8 @@ public function testGeneralInfoGetters($fileName)
     public function fileProvider()
     {
         $files = ['PHP5.5' => [__DIR__ . '/Stub/FileWithParameters55.php']];
-
-        if (PHP_VERSION_ID >= 50600) {
-            $files['PHP5.6'] = [__DIR__ . '/Stub/FileWithParameters56.php'];
-        }
-        if (PHP_VERSION_ID >= 70000) {
-            $files['PHP7.0'] = [__DIR__ . '/Stub/FileWithParameters70.php'];
-        }
+        $files['PHP5.6'] = [__DIR__ . '/Stub/FileWithParameters56.php'];
+        $files['PHP7.0'] = [__DIR__ . '/Stub/FileWithParameters70.php'];
 
         return $files;
     }
@@ -253,15 +244,12 @@ public function testCoverAllMethods()
         }
 
         if ($allMissedMethods) {
-            $this->markTestIncomplete('Methods ' . join($allMissedMethods, ', ') . ' are not implemented');
+            $this->markTestIncomplete('Methods ' . implode(', ', $allMissedMethods) . ' are not implemented');
         }
     }
 
     public function testGetTypeMethod()
     {
-        if (PHP_VERSION_ID < 70000) {
-            $this->markTestSkipped('Test available only for PHP7.0 and newer');
-        }
         $this->setUpFile(__DIR__ . '/Stub/FileWithParameters70.php');
 
         foreach ($this->parsedRefFile->getFileNamespaces() as $fileNamespace) {
@@ -282,12 +270,7 @@ public function testGetTypeMethod()
                         $originalReturnType = $originalRefParameter->getType();
                         $this->assertSame($originalReturnType->allowsNull(), $parsedReturnType->allowsNull(), $message);
                         $this->assertSame($originalReturnType->isBuiltin(), $parsedReturnType->isBuiltin(), $message);
-                        // TODO: To prevent deprecation error in tests
-                        if (PHP_VERSION_ID < 70400) {
-                            $this->assertSame($originalReturnType->__toString(), $parsedReturnType->__toString(), $message);
-                        } else {
-                            $this->assertSame($originalReturnType->getName(), $parsedReturnType->__toString(), $message);
-                        }
+                        $this->assertSame($originalReturnType->getName(), $parsedReturnType->__toString(), $message);
                     } else {
                         $this->assertSame(
                             $originalRefParameter->getType(),