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?? Editing: Php4ConstructorRector.php

<?php

declare (strict_types=1);
namespace Rector\Php70\Rector\ClassMethod;

use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\Node\Expr\StaticCall;
use PhpParser\Node\Identifier;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Expression;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\ClassReflection;
use Rector\Enum\ObjectReference;
use Rector\NodeCollector\ScopeResolver\ParentClassScopeResolver;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\Php70\NodeAnalyzer\Php4ConstructorClassMethodAnalyzer;
use Rector\Rector\AbstractScopeAwareRector;
use Rector\ValueObject\MethodName;
use Rector\ValueObject\PhpVersionFeature;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\Php70\Rector\ClassMethod\Php4ConstructorRector\Php4ConstructorRectorTest
 */
final class Php4ConstructorRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
{
    /**
     * @readonly
     * @var \Rector\Php70\NodeAnalyzer\Php4ConstructorClassMethodAnalyzer
     */
    private $php4ConstructorClassMethodAnalyzer;
    /**
     * @readonly
     * @var \Rector\NodeCollector\ScopeResolver\ParentClassScopeResolver
     */
    private $parentClassScopeResolver;
    public function __construct(Php4ConstructorClassMethodAnalyzer $php4ConstructorClassMethodAnalyzer, ParentClassScopeResolver $parentClassScopeResolver)
    {
        $this->php4ConstructorClassMethodAnalyzer = $php4ConstructorClassMethodAnalyzer;
        $this->parentClassScopeResolver = $parentClassScopeResolver;
    }
    public function provideMinPhpVersion() : int
    {
        return PhpVersionFeature::NO_PHP4_CONSTRUCTOR;
    }
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Changes PHP 4 style constructor to __construct.', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
    public function SomeClass()
    {
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
    public function __construct()
    {
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [Class_::class];
    }
    /**
     * @param Class_ $node
     * @return \PhpParser\Node\Stmt\Class_|int|null
     */
    public function refactorWithScope(Node $node, Scope $scope)
    {
        $className = $this->getName($node);
        if (!\is_string($className)) {
            return null;
        }
        $psr4ConstructorMethod = $node->getMethod(\lcfirst($className)) ?? $node->getMethod($className);
        if (!$psr4ConstructorMethod instanceof ClassMethod) {
            return null;
        }
        if (!$this->php4ConstructorClassMethodAnalyzer->detect($psr4ConstructorMethod, $scope)) {
            return null;
        }
        $classReflection = $scope->getClassReflection();
        if (!$classReflection instanceof ClassReflection) {
            return null;
        }
        // process parent call references first
        $this->processClassMethodStatementsForParentConstructorCalls($psr4ConstructorMethod, $scope);
        // does it already have a __construct method?
        if (!$classReflection->hasNativeMethod(MethodName::CONSTRUCT)) {
            $psr4ConstructorMethod->name = new Identifier(MethodName::CONSTRUCT);
        }
        $classMethodStmts = $psr4ConstructorMethod->stmts;
        if ($classMethodStmts === null) {
            return null;
        }
        if (\count($classMethodStmts) === 1) {
            $stmt = $psr4ConstructorMethod->stmts[0];
            if (!$stmt instanceof Expression) {
                return null;
            }
            if ($this->isLocalMethodCallNamed($stmt->expr, MethodName::CONSTRUCT)) {
                $stmtKey = $psr4ConstructorMethod->getAttribute(AttributeKey::STMT_KEY);
                unset($node->stmts[$stmtKey]);
            }
        }
        return $node;
    }
    private function processClassMethodStatementsForParentConstructorCalls(ClassMethod $classMethod, Scope $scope) : void
    {
        if (!\is_iterable($classMethod->stmts)) {
            return;
        }
        foreach ($classMethod->stmts as $methodStmt) {
            if (!$methodStmt instanceof Expression) {
                continue;
            }
            $methodStmt = $methodStmt->expr;
            if (!$methodStmt instanceof StaticCall) {
                continue;
            }
            $this->processParentPhp4ConstructCall($methodStmt, $scope);
        }
    }
    private function processParentPhp4ConstructCall(StaticCall $staticCall, Scope $scope) : void
    {
        $parentClassReflection = $this->parentClassScopeResolver->resolveParentClassReflection($scope);
        // no parent class
        if (!$parentClassReflection instanceof ClassReflection) {
            return;
        }
        if (!$staticCall->class instanceof Name) {
            return;
        }
        // rename ParentClass
        if ($this->isName($staticCall->class, $parentClassReflection->getName())) {
            $staticCall->class = new Name(ObjectReference::PARENT);
        }
        if (!$this->isName($staticCall->class, ObjectReference::PARENT)) {
            return;
        }
        // it's not a parent PHP 4 constructor call
        if (!$this->isName($staticCall->name, $parentClassReflection->getName())) {
            return;
        }
        $staticCall->name = new Identifier(MethodName::CONSTRUCT);
    }
    private function isLocalMethodCallNamed(Expr $expr, string $name) : bool
    {
        if (!$expr instanceof MethodCall) {
            return \false;
        }
        if ($expr->var instanceof StaticCall) {
            return \false;
        }
        if ($expr->var instanceof MethodCall) {
            return \false;
        }
        if (!$this->isName($expr->var, 'this')) {
            return \false;
        }
        return $this->isName($expr->name, $name);
    }
}

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?? Php4ConstructorRector.php

?? Editing: Php4ConstructorRector.php

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