[DowngradePhp80] Handle union implements method from interface on DowngradeUnionTypeDeclarationRector

Author: samsonasik

rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Fixture/override_from_interface.php.inc

@@ -0,0 +1,38 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Fixture;
+
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo1;
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo2;
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\SomeInterface;
+
+class OverrideFromInterface implements SomeInterface
+{
+    public function run(): Foo1|Foo2
+    {
+        return new Foo1();
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Fixture;
+
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo1;
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo2;
+use Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\SomeInterface;
+
+class OverrideFromInterface implements SomeInterface
+{
+    /**
+     * @return \Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo1|\Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\Foo2
+     */
+    public function run(): \Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source\SomeInterface
+    {
+        return new Foo1();
+    }
+}
+
+?>

rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Source/Foo1.php

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+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source;
+
+class Foo1 implements FooInterface
+{
+}

rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Source/Foo2.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source;
+
+class Foo2 implements FooInterface
+{
+}

rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Source/FooInterface.php

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+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source;
+
+interface FooInterface
+{
+}

rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Source/SomeInterface.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDeclarationRector\Source;
+
+interface SomeInterface
+{
+    public function run(): FooInterface;
+}