[CodingStyle] Handle ClassConstFetch on RemoveUnusedAliasRector (#785)

* [CodingStyle] Handle CClassConstFetch on RemoveUnusedAliasRector

* add conflict fixture

* eol

* add FullyQualifiedFromUseFinder

* [ci-review] Rector Rectify

* final touch: match -> matchAlias naming method

* final touch: matchAlias -> matchAliasNamespace naming method

Co-authored-by: GitHub Action <action@github.com>

phpstan.neon

@@ -551,4 +551,4 @@ parameters:
             paths:
                 - rules/Php74/Rector/LNumber/AddLiteralSeparatorToNumberRector.php
 
-        - '#^Cognitive complexity for "Rector\\CodingStyle\\Naming\\NameRenamer\:\:renameNameNode\(\)" is 12, keep it under 9$#'
+        - '#^Cognitive complexity for "Rector\\CodingStyle\\Naming\\NameRenamer\:\:renameNameNode\(\)" is 13, keep it under 9$#'

rules-tests/CodingStyle/Rector/Use_/RemoveUnusedAliasRector/Fixture/skip_has_conflict_class_contant.php.inc

@@ -0,0 +1,23 @@
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\Use_\RemoveUnusedAliasRector\Fixture;
+
+use App\Bar as BarAlias;
+use App\Foo\Bar;
+use App\NoAlias;
+
+class SkipHasConflictClassConstant
+{
+    private $classMap = [
+        BarAlias::class => 'bar',
+        NoAlias::class => 'noalias',
+    ];
+
+    public function run()
+    {
+        Bar::execute();
+        Bar::DATA;
+    }
+}
+
+?>

rules-tests/CodingStyle/Rector/Use_/RemoveUnusedAliasRector/Fixture/skip_used_in_class_constant.php.inc

@@ -1,12 +0,0 @@
-<?php
-
-namespace Rector\Tests\CodingStyle\Rector\Use_\RemoveUnusedAliasRector\Fixture;
-
-use App\Bar as BarAlias;
-
-class SkipUsedInClassConstant
-{
-    private $classMap = [
-        BarAlias::class => 'bar',
-    ];
-}

rules-tests/CodingStyle/Rector/Use_/RemoveUnusedAliasRector/Fixture/used_in_class_constant.php.inc

@@ -0,0 +1,45 @@
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\Use_\RemoveUnusedAliasRector\Fixture;
+
+use App\Bar as BarAlias;
+use App\NoAlias;
+
+class UsedInClassConstant
+{
+    private $classMap = [
+        BarAlias::class => 'bar',
+        NoAlias::class => 'noalias',
+    ];
+
+    public function run()
+    {
+        BarAlias::execute();
+        BarAlias::DATA;
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\Use_\RemoveUnusedAliasRector\Fixture;
+
+use App\Bar;
+use App\NoAlias;
+
+class UsedInClassConstant
+{
+    private $classMap = [
+        Bar::class => 'bar',
+        NoAlias::class => 'noalias',
+    ];
+
+    public function run()
+    {
+        Bar::execute();
+        Bar::DATA;
+    }
+}
+
+?>

rules/CodingStyle/Naming/NameRenamer.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Rector\CodingStyle\Naming;
 
 use PhpParser\Node;
+use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Expr\Instanceof_;
 use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Expr\StaticCall;
@@ -75,9 +76,26 @@ final class NameRenamer
             if ($parentNode instanceof Instanceof_) {
                 $this->renameInInstanceOf($lastName, $parentNode, $usedName);
             }
+
+            if ($parentNode instanceof ClassConstFetch) {
+                $this->renameClassConstFetch($lastName, $parentNode, $usedName);
+            }
         }
     }
 
+    private function renameClassConstFetch(
+        string $lastName,
+        ClassConstFetch $classConstFetch,
+        Name | Identifier $usedNameNode
+    ): void
+    {
+        if (! $this->nodeNameResolver->areNamesEqual($classConstFetch->class, $usedNameNode)) {
+            return;
+        }
+
+        $classConstFetch->class = new Name($lastName);
+    }
+
     private function renameInInstanceOf(
         string $lastName,
         Instanceof_ $instanceof,

rules/CodingStyle/Rector/Use_/RemoveUnusedAliasRector.php

@@ -4,11 +4,8 @@ declare(strict_types=1);
 
 namespace Rector\CodingStyle\Rector\Use_;
 
-use Nette\Utils\Strings;
 use PhpParser\Node;
-use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Name;
-use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Stmt\Namespace_;
 use PhpParser\Node\Stmt\Use_;
 use PhpParser\Node\Stmt\UseUse;
@@ -18,6 +15,7 @@ use Rector\CodingStyle\Node\DocAliasResolver;
 use Rector\CodingStyle\Node\UseManipulator;
 use Rector\CodingStyle\Node\UseNameAliasToNameResolver;
 use Rector\CodingStyle\ValueObject\NameAndParent;
+use Rector\Core\PhpParser\NodeFinder\FullyQualifiedFromUseFinder;
 use Rector\Core\Rector\AbstractRector;
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -48,7 +46,8 @@ final class RemoveUnusedAliasRector extends AbstractRector
         private UseManipulator $useManipulator,
         private UseNameAliasToNameResolver $useNameAliasToNameResolver,
         private NameRenamer $nameRenamer,
-        private ClassNameImportSkipper $classNameImportSkipper
+        private ClassNameImportSkipper $classNameImportSkipper,
+        private FullyQualifiedFromUseFinder $fullyQualifiedFromUseFinder
     ) {
     }
 
@@ -183,29 +182,7 @@ CODE_SAMPLE
             return true;
         }
 
-        return (bool) $this->betterNodeFinder->findFirstNext($use, function (Node $node) use (
-            $name,
-            $loweredAliasName
-        ): bool {
-            if ($node instanceof FullyQualified) {
-                $originalName = $node->getAttribute(AttributeKey::ORIGINAL_NAME);
-                if ($originalName instanceof Name) {
-                    $loweredOriginalName = strtolower($originalName->toString());
-                    $loweredOriginalNameNamespace = Strings::before($loweredOriginalName, '\\');
-                    return $loweredAliasName === $loweredOriginalNameNamespace;
-                }
-            }
-
-            if (! $node instanceof ClassConstFetch) {
-                return false;
-            }
-
-            if (! $node->class instanceof Name) {
-                return false;
-            }
-
-            return $node->class->toString() === $name->toString();
-        });
+        return (bool) $this->fullyQualifiedFromUseFinder->matchAliasNamespace($use, $loweredAliasName);
     }
 
     private function refactorAliasName(Use_ $use, string $aliasName, string $lastName, UseUse $useUse): void

src/PhpParser/NodeFinder/FullyQualifiedFromUseFinder.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Core\PhpParser\NodeFinder;
+
+use Nette\Utils\Strings;
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified;
+use PhpParser\Node\Stmt\Use_;
+use Rector\Core\PhpParser\Node\BetterNodeFinder;
+use Rector\NodeTypeResolver\Node\AttributeKey;
+
+final class FullyQualifiedFromUseFinder
+{
+    public function __construct(
+        private BetterNodeFinder $betterNodeFinder
+    ) {
+    }
+
+    public function matchAliasNamespace(Use_ $use, string $loweredAliasName): ?Node
+    {
+        return $this->betterNodeFinder->findFirstNext($use, function (Node $node) use ($loweredAliasName): bool {
+            if (! $node instanceof FullyQualified) {
+                return false;
+            }
+
+            $originalName = $node->getAttribute(AttributeKey::ORIGINAL_NAME);
+            if (! $originalName instanceof Name) {
+                return false;
+            }
+
+            $loweredOriginalName = strtolower($originalName->toString());
+            $loweredOriginalNameNamespace = Strings::before($loweredOriginalName, '\\');
+            return $loweredAliasName === $loweredOriginalNameNamespace;
+        });
+    }
+}