[Php81] Add NullToStrictIntPregSlitFuncCallLimitArgRector

config/set/php81.php

@@ -6,6 +6,7 @@
 use Rector\Php81\Rector\Array_\FirstClassCallableRector;
 use Rector\Php81\Rector\Class_\MyCLabsClassToEnumRector;
 use Rector\Php81\Rector\Class_\SpatieEnumClassToEnumRector;
+use Rector\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector;
 use Rector\Php81\Rector\FuncCall\NullToStrictStringFuncCallArgRector;
 use Rector\Php81\Rector\MethodCall\MyCLabsMethodCallToEnumConstRector;
 use Rector\Php81\Rector\MethodCall\RemoveReflectionSetAccessibleCallsRector;
@@ -24,6 +25,7 @@
         SpatieEnumClassToEnumRector::class,
         SpatieEnumMethodCallToEnumConstRector::class,
         NullToStrictStringFuncCallArgRector::class,
+        NullToStrictIntPregSlitFuncCallLimitArgRector::class,
         FirstClassCallableRector::class,
         RemoveReflectionSetAccessibleCallsRector::class,
     ]);

rules-tests/Php81/Rector/FuncCall/NullToStrictIntPregSlitFuncCallLimitArgRector/Fixture/fixture.php.inc

@@ -0,0 +1,27 @@
+<?php
+
+namespace Rector\Tests\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector\Fixture;
+
+class Fixture
+{
+    public function run($output)
+    {
+        preg_split('/\s/', $output, NULL, PREG_SPLIT_NO_EMPTY);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector\Fixture;
+
+class Fixture
+{
+    public function run($output)
+    {
+        preg_split('/\s/', $output, 0, PREG_SPLIT_NO_EMPTY);
+    }
+}
+
+?>

rules-tests/Php81/Rector/FuncCall/NullToStrictIntPregSlitFuncCallLimitArgRector/Fixture/skip_no_limit.php.inc

@@ -0,0 +1,11 @@
+<?php
+
+namespace Rector\Tests\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector\Fixture;
+
+class SkipNoLimit
+{
+    public function run($output)
+    {
+        $keywords = preg_split("/[\s,]+/", $output);
+    }
+}

rules-tests/Php81/Rector/FuncCall/NullToStrictIntPregSlitFuncCallLimitArgRector/NullToStrictIntPregSlitFuncCallLimitArgRectorTest.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector;
+
+use Iterator;
+use PHPUnit\Framework\Attributes\DataProvider;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class NullToStrictIntPregSlitFuncCallLimitArgRectorTest extends AbstractRectorTestCase
+{
+    #[DataProvider('provideData')]
+    public function test(string $filePath): void
+    {
+        $this->doTestFile($filePath);
+    }
+
+    public static function provideData(): Iterator
+    {
+        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    public function provideConfigFilePath(): string
+    {
+        return __DIR__ . '/config/configured_rule.php';
+    }
+}

rules-tests/Php81/Rector/FuncCall/NullToStrictIntPregSlitFuncCallLimitArgRector/config/configured_rule.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector;
+
+return RectorConfig::configure()
+    ->withRules([NullToStrictIntPregSlitFuncCallLimitArgRector::class]);

rules/Php81/NodeManipulator/NullToStrictStringConverter.php → rules/Php81/NodeManipulator/NullToStrictStringIntConverter.php

@@ -6,10 +6,12 @@
 
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\Cast\Int_ as CastInt_;
 use PhpParser\Node\Expr\Cast\String_ as CastString_;
 use PhpParser\Node\Expr\FuncCall;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Expr\Ternary;
+use PhpParser\Node\Scalar\Int_;
 use PhpParser\Node\Scalar\InterpolatedString;
 use PhpParser\Node\Scalar\String_;
 use PHPStan\Analyser\Scope;
@@ -24,7 +26,7 @@
 use Rector\NodeTypeResolver\NodeTypeResolver;
 use Rector\PhpParser\Node\Value\ValueResolver;
 
-final readonly class NullToStrictStringConverter
+final readonly class NullToStrictStringIntConverter
 {
     public function __construct(
         private ValueResolver $valueResolver,
@@ -42,20 +44,21 @@ public function convertIfNull(
         int $position,
         bool $isTrait,
         Scope $scope,
-        ParametersAcceptor $parametersAcceptor
+        ParametersAcceptor $parametersAcceptor,
+        string $targetType = 'string'
     ): ?FuncCall {
         if (! isset($args[$position])) {
             return null;
         }
 
         $argValue = $args[$position]->value;
         if ($this->valueResolver->isNull($argValue)) {
-            $args[$position]->value = new String_('');
+            $args[$position]->value = $targetType === 'string' ? new String_('') : new Int_(0);
             $funcCall->args = $args;
             return $funcCall;
         }
 
-        if ($this->shouldSkipValue($argValue, $scope, $isTrait)) {
+        if ($this->shouldSkipValue($argValue, $scope, $isTrait, $targetType)) {
             return null;
         }
 
@@ -67,32 +70,42 @@ public function convertIfNull(
             }
         }
 
-        if ($argValue instanceof Ternary && ! $this->shouldSkipValue($argValue->else, $scope, $isTrait)) {
+        if ($argValue instanceof Ternary && ! $this->shouldSkipValue($argValue->else, $scope, $isTrait, $targetType)) {
             if ($this->valueResolver->isNull($argValue->else)) {
-                $argValue->else = new String_('');
+                $argValue->else = $targetType === 'string' ? new String_('') : new Int_(0);
             } else {
-                $argValue->else = new CastString_($argValue->else);
+                $argValue->else = $targetType === 'string' ? new CastString_($argValue->else) : new CastInt_(
+                    $argValue->else
+                );
             }
 
             $args[$position]->value = $argValue;
             $funcCall->args = $args;
             return $funcCall;
         }
 
-        $args[$position]->value = new CastString_($argValue);
+        $args[$position]->value = $targetType === 'string' ? new CastString_($argValue) : new CastInt_($argValue);
         $funcCall->args = $args;
         return $funcCall;
     }
 
-    private function shouldSkipValue(Expr $expr, Scope $scope, bool $isTrait): bool
+    private function shouldSkipValue(Expr $expr, Scope $scope, bool $isTrait, string $targetType): bool
     {
         $type = $this->nodeTypeResolver->getType($expr);
-        if ($type->isString()->yes()) {
+        if ($type->isString()->yes() && $targetType === 'string') {
+            return true;
+        }
+
+        if ($type->isInteger()->yes() && $targetType === 'int') {
             return true;
         }
 
         $nativeType = $this->nodeTypeResolver->getNativeType($expr);
-        if ($nativeType->isString()->yes()) {
+        if ($nativeType->isString()->yes() && $targetType === 'string') {
+            return true;
+        }
+
+        if ($nativeType->isInteger()->yes() && $targetType === 'int') {
             return true;
         }
 

rules/Php81/Rector/FuncCall/NullToStrictIntPregSlitFuncCallLimitArgRector.php

@@ -0,0 +1,162 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Php81\Rector\FuncCall;
+
+use PhpParser\Node;
+use PhpParser\Node\Arg;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Identifier;
+use PHPStan\Analyser\Scope;
+use PHPStan\Reflection\ClassReflection;
+use PHPStan\Reflection\FunctionReflection;
+use Rector\NodeAnalyzer\ArgsAnalyzer;
+use Rector\NodeTypeResolver\Node\AttributeKey;
+use Rector\NodeTypeResolver\PHPStan\ParametersAcceptorSelectorVariantsWrapper;
+use Rector\Php81\NodeManipulator\NullToStrictStringIntConverter;
+use Rector\Rector\AbstractRector;
+use Rector\Reflection\ReflectionResolver;
+use Rector\ValueObject\PhpVersionFeature;
+use Rector\VersionBonding\Contract\MinPhpVersionInterface;
+use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
+use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
+
+/**
+ * @see https://3v4l.org/cVPim
+ * @see \Rector\Tests\Php81\Rector\FuncCall\NullToStrictIntPregSlitFuncCallLimitArgRector\NullToStrictIntPregSlitFuncCallLimitArgRectorTest
+ */
+final class NullToStrictIntPregSlitFuncCallLimitArgRector extends AbstractRector implements MinPhpVersionInterface
+{
+    public function __construct(
+        private readonly ReflectionResolver $reflectionResolver,
+        private readonly ArgsAnalyzer $argsAnalyzer,
+        private readonly NullToStrictStringIntConverter $nullToStrictStringIntConverter
+    ) {
+    }
+
+    public function getRuleDefinition(): RuleDefinition
+    {
+        return new RuleDefinition(
+            'Change null to strict int defined preg_split limit arg function call argument',
+            [
+                new CodeSample(
+                    <<<'CODE_SAMPLE'
+class SomeClass
+{
+    public function run()
+    {
+        preg_split('/\s/', $output, NULL, PREG_SPLIT_NO_EMPTY)
+    }
+}
+CODE_SAMPLE
+                    ,
+                    <<<'CODE_SAMPLE'
+class SomeClass
+{
+    public function run()
+    {
+        preg_split('/\s/', $output, 0, PREG_SPLIT_NO_EMPTY)
+    }
+}
+CODE_SAMPLE
+                ),
+            ]
+        );
+    }
+
+    /**
+     * @return array<class-string<Node>>
+     */
+    public function getNodeTypes(): array
+    {
+        return [FuncCall::class];
+    }
+
+    /**
+     * @param FuncCall $node
+     */
+    public function refactor(Node $node): ?Node
+    {
+        if ($this->shouldSkip($node)) {
+            return null;
+        }
+
+        $scope = $node->getAttribute(AttributeKey::SCOPE);
+        if (! $scope instanceof Scope) {
+            return null;
+        }
+
+        $args = $node->getArgs();
+        $position = $this->argsAnalyzer->hasNamedArg($args)
+            ? $this->resolveNamedPosition($args)
+            : 2;
+
+        if ($position === null) {
+            return null;
+        }
+
+        if (! isset($args[$position])) {
+            return null;
+        }
+
+        $classReflection = $scope->getClassReflection();
+        $isTrait = $classReflection instanceof ClassReflection && $classReflection->isTrait();
+
+        $functionReflection = $this->reflectionResolver->resolveFunctionLikeReflectionFromCall($node);
+        if (! $functionReflection instanceof FunctionReflection) {
+            return null;
+        }
+
+        $parametersAcceptor = ParametersAcceptorSelectorVariantsWrapper::select($functionReflection, $node, $scope);
+        $result = $this->nullToStrictStringIntConverter->convertIfNull(
+            $node,
+            $args,
+            $position,
+            $isTrait,
+            $scope,
+            $parametersAcceptor,
+            'int'
+        );
+
+        if ($result instanceof Node) {
+            return $result;
+        }
+
+        return null;
+    }
+
+    public function provideMinPhpVersion(): int
+    {
+        return PhpVersionFeature::DEPRECATE_NULL_ARG_IN_STRING_FUNCTION;
+    }
+
+    /**
+     * @param Arg[] $args
+     */
+    private function resolveNamedPosition(array $args): ?int
+    {
+        foreach ($args as $position => $arg) {
+            if (! $arg->name instanceof Identifier) {
+                continue;
+            }
+
+            if (! $this->isName($arg->name, 'limit')) {
+                continue;
+            }
+
+            return $position;
+        }
+
+        return null;
+    }
+
+    private function shouldSkip(FuncCall $funcCall): bool
+    {
+        if (! $this->isName($funcCall, 'preg_split')) {
+            return true;
+        }
+
+        return $funcCall->isFirstClassCallable();
+    }
+}

rules/Php81/Rector/FuncCall/NullToStrictStringFuncCallArgRector.php

@@ -16,7 +16,7 @@
 use Rector\NodeTypeResolver\Node\AttributeKey;
 use Rector\NodeTypeResolver\PHPStan\ParametersAcceptorSelectorVariantsWrapper;
 use Rector\Php81\Enum\NameNullToStrictNullFunctionMap;
-use Rector\Php81\NodeManipulator\NullToStrictStringConverter;
+use Rector\Php81\NodeManipulator\NullToStrictStringIntConverter;
 use Rector\Rector\AbstractRector;
 use Rector\Reflection\ReflectionResolver;
 use Rector\ValueObject\PhpVersionFeature;
@@ -32,7 +32,7 @@ final class NullToStrictStringFuncCallArgRector extends AbstractRector implement
     public function __construct(
         private readonly ReflectionResolver $reflectionResolver,
         private readonly ArgsAnalyzer $argsAnalyzer,
-        private readonly NullToStrictStringConverter $nullToStrictStringConverter
+        private readonly NullToStrictStringIntConverter $nullToStrictStringIntConverter
     ) {
     }
 
@@ -109,7 +109,7 @@ public function refactor(Node $node): ?Node
         $isChanged = false;
 
         foreach ($positions as $position) {
-            $result = $this->nullToStrictStringConverter->convertIfNull(
+            $result = $this->nullToStrictStringIntConverter->convertIfNull(
                 $node,
                 $args,
                 (int) $position,