mirror of https://github.com/rectorphp/rector.git
172 lines
5.6 KiB
PHP
172 lines
5.6 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\TypeDeclaration\Rector\ClassMethod;
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use PhpParser\Node;
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use PhpParser\Node\Expr\Closure;
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use PhpParser\Node\Stmt\ClassMethod;
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use PhpParser\Node\Stmt\Function_;
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use PHPStan\Analyser\Scope;
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use PHPStan\PhpDocParser\Ast\PhpDoc\ReturnTagValueNode;
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use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
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use PHPStan\Type\Constant\ConstantBooleanType;
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use PHPStan\Type\UnionType;
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use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
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use Rector\BetterPhpDocParser\ValueObject\Type\BracketsAwareUnionTypeNode;
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use Rector\Comments\NodeDocBlock\DocBlockUpdater;
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use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
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use Rector\PHPStanStaticTypeMapper\TypeMapper\UnionTypeMapper;
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use Rector\Rector\AbstractScopeAwareRector;
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use Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VendorLocker\NodeVendorLocker\ClassMethodReturnTypeOverrideGuard;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @see \Rector\Tests\TypeDeclaration\Rector\ClassMethod\ReturnUnionTypeRector\ReturnUnionTypeRectorTest
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*/
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final class ReturnUnionTypeRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer
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*/
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private $returnTypeInferer;
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/**
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* @readonly
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* @var \Rector\VendorLocker\NodeVendorLocker\ClassMethodReturnTypeOverrideGuard
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*/
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private $classMethodReturnTypeOverrideGuard;
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/**
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* @readonly
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* @var \Rector\PHPStanStaticTypeMapper\TypeMapper\UnionTypeMapper
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*/
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private $unionTypeMapper;
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/**
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* @readonly
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* @var \Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory
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*/
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private $phpDocInfoFactory;
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/**
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* @readonly
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* @var \Rector\Comments\NodeDocBlock\DocBlockUpdater
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*/
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private $docBlockUpdater;
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public function __construct(ReturnTypeInferer $returnTypeInferer, ClassMethodReturnTypeOverrideGuard $classMethodReturnTypeOverrideGuard, UnionTypeMapper $unionTypeMapper, PhpDocInfoFactory $phpDocInfoFactory, DocBlockUpdater $docBlockUpdater)
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{
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$this->returnTypeInferer = $returnTypeInferer;
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$this->classMethodReturnTypeOverrideGuard = $classMethodReturnTypeOverrideGuard;
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$this->unionTypeMapper = $unionTypeMapper;
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$this->phpDocInfoFactory = $phpDocInfoFactory;
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$this->docBlockUpdater = $docBlockUpdater;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Add union return type', [new CodeSample(<<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function getData()
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{
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if (rand(0, 1)) {
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return null;
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}
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if (rand(0, 1)) {
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return new DateTime('now');
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}
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return new stdClass;
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function getData(): null|\DateTime|\stdClass
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{
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if (rand(0, 1)) {
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return null;
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}
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if (rand(0, 1)) {
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return new DateTime('now');
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}
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return new stdClass;
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}
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}
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CODE_SAMPLE
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)]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [ClassMethod::class, Function_::class, Closure::class];
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::NULLABLE_TYPE;
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}
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/**
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* @param ClassMethod|Function_|Closure $node
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*/
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public function refactorWithScope(Node $node, Scope $scope) : ?Node
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{
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if ($node->stmts === null) {
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return null;
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}
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if ($node->returnType instanceof Node) {
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return null;
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}
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if ($node instanceof ClassMethod && $this->classMethodReturnTypeOverrideGuard->shouldSkipClassMethod($node, $scope)) {
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return null;
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}
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$inferReturnType = $this->returnTypeInferer->inferFunctionLike($node);
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if (!$inferReturnType instanceof UnionType) {
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return null;
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}
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$returnType = $this->unionTypeMapper->mapToPhpParserNode($inferReturnType, TypeKind::RETURN);
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if (!$returnType instanceof Node) {
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return null;
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}
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$this->mapStandaloneSubType($node, $inferReturnType);
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$node->returnType = $returnType;
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return $node;
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}
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/**
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* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure $node
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*/
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private function mapStandaloneSubType($node, UnionType $unionType) : void
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{
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$value = null;
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foreach ($unionType->getTypes() as $type) {
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if ($type instanceof ConstantBooleanType) {
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$value = $type->getValue() ? 'true' : 'false';
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break;
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}
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}
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if ($value === null) {
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return;
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}
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$phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
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$returnType = $phpDocInfo->getReturnTagValue();
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if (!$returnType instanceof ReturnTagValueNode) {
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return;
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}
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if (!$returnType->type instanceof BracketsAwareUnionTypeNode) {
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return;
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}
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foreach ($returnType->type->types as $key => $type) {
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if ($type instanceof IdentifierTypeNode && $type->__toString() === 'bool') {
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$returnType->type->types[$key] = new IdentifierTypeNode($value);
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$this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($node);
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break;
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}
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}
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}
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}
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