mirror of
https://github.com/rectorphp/rector.git
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271 lines
12 KiB
PHP
271 lines
12 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php72\NodeFactory;
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use RectorPrefix20210815\Nette\Utils\Strings;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\ArrayDimFetch;
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use PhpParser\Node\Expr\Assign;
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use PhpParser\Node\Expr\ClassConstFetch;
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use PhpParser\Node\Expr\Closure;
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use PhpParser\Node\Expr\ClosureUse;
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use PhpParser\Node\Expr\MethodCall;
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use PhpParser\Node\Expr\New_;
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use PhpParser\Node\Expr\StaticCall;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Identifier;
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use PhpParser\Node\Name;
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use PhpParser\Node\Name\FullyQualified;
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use PhpParser\Node\NullableType;
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use PhpParser\Node\Param;
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use PhpParser\Node\Scalar\LNumber;
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use PhpParser\Node\Scalar\String_;
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use PhpParser\Node\Stmt;
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use PhpParser\Node\Stmt\Expression;
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use PhpParser\Node\Stmt\Return_;
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use PhpParser\Node\UnionType;
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use PhpParser\Parser;
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use PHPStan\Reflection\FunctionVariantWithPhpDocs;
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use PHPStan\Reflection\ParameterReflection;
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use PHPStan\Reflection\ParametersAcceptorSelector;
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use PHPStan\Reflection\Php\PhpMethodReflection;
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use PHPStan\Type\MixedType;
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use PHPStan\Type\VoidType;
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use Rector\Core\Exception\ShouldNotHappenException;
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use Rector\Core\PhpParser\Node\BetterNodeFinder;
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use Rector\Core\PhpParser\Node\NodeFactory;
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use Rector\NodeNameResolver\NodeNameResolver;
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use Rector\NodeTypeResolver\Node\AttributeKey;
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use Rector\PHPStanStaticTypeMapper\ValueObject\TypeKind;
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use Rector\StaticTypeMapper\StaticTypeMapper;
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use RectorPrefix20210815\Symplify\Astral\NodeTraverser\SimpleCallableNodeTraverser;
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final class AnonymousFunctionFactory
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{
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/**
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* @var string
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* @see https://regex101.com/r/jkLLlM/2
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*/
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private const DIM_FETCH_REGEX = '#(\\$|\\\\|\\x0)(?<number>\\d+)#';
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/**
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* @var \Rector\NodeNameResolver\NodeNameResolver
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*/
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private $nodeNameResolver;
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/**
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* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
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*/
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private $betterNodeFinder;
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/**
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* @var \Rector\Core\PhpParser\Node\NodeFactory
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*/
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private $nodeFactory;
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/**
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* @var \Rector\StaticTypeMapper\StaticTypeMapper
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*/
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private $staticTypeMapper;
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/**
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* @var \Symplify\Astral\NodeTraverser\SimpleCallableNodeTraverser
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*/
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private $simpleCallableNodeTraverser;
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/**
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* @var \PhpParser\Parser
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*/
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private $parser;
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public function __construct(\Rector\NodeNameResolver\NodeNameResolver $nodeNameResolver, \Rector\Core\PhpParser\Node\BetterNodeFinder $betterNodeFinder, \Rector\Core\PhpParser\Node\NodeFactory $nodeFactory, \Rector\StaticTypeMapper\StaticTypeMapper $staticTypeMapper, \RectorPrefix20210815\Symplify\Astral\NodeTraverser\SimpleCallableNodeTraverser $simpleCallableNodeTraverser, \PhpParser\Parser $parser)
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{
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$this->nodeNameResolver = $nodeNameResolver;
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$this->betterNodeFinder = $betterNodeFinder;
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$this->nodeFactory = $nodeFactory;
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$this->staticTypeMapper = $staticTypeMapper;
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$this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser;
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$this->parser = $parser;
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}
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/**
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* @param Param[] $params
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* @param Stmt[] $stmts
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* @param \PhpParser\Node\Identifier|\PhpParser\Node\Name|\PhpParser\Node\NullableType|\PhpParser\Node\UnionType|null $returnTypeNode
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*/
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public function create(array $params, array $stmts, $returnTypeNode) : \PhpParser\Node\Expr\Closure
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{
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$useVariables = $this->createUseVariablesFromParams($stmts, $params);
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$anonymousFunctionNode = new \PhpParser\Node\Expr\Closure();
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$anonymousFunctionNode->params = $params;
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foreach ($useVariables as $useVariable) {
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$anonymousFunctionNode->uses[] = new \PhpParser\Node\Expr\ClosureUse($useVariable);
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}
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if ($returnTypeNode instanceof \PhpParser\Node) {
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$anonymousFunctionNode->returnType = $returnTypeNode;
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}
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$anonymousFunctionNode->stmts = $stmts;
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return $anonymousFunctionNode;
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}
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public function createFromPhpMethodReflection(\PHPStan\Reflection\Php\PhpMethodReflection $phpMethodReflection, \PhpParser\Node\Expr $expr) : ?\PhpParser\Node\Expr\Closure
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{
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/** @var FunctionVariantWithPhpDocs $functionVariantWithPhpDoc */
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$functionVariantWithPhpDoc = \PHPStan\Reflection\ParametersAcceptorSelector::selectSingle($phpMethodReflection->getVariants());
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$anonymousFunction = new \PhpParser\Node\Expr\Closure();
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$newParams = $this->createParams($functionVariantWithPhpDoc->getParameters());
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$anonymousFunction->params = $newParams;
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$innerMethodCall = $this->createInnerMethodCall($phpMethodReflection, $expr, $newParams);
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if ($innerMethodCall === null) {
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return null;
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}
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if (!$functionVariantWithPhpDoc->getReturnType() instanceof \PHPStan\Type\MixedType) {
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$returnType = $this->staticTypeMapper->mapPHPStanTypeToPhpParserNode($functionVariantWithPhpDoc->getReturnType(), \Rector\PHPStanStaticTypeMapper\ValueObject\TypeKind::RETURN());
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$anonymousFunction->returnType = $returnType;
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}
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// does method return something?
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if (!$functionVariantWithPhpDoc->getReturnType() instanceof \PHPStan\Type\VoidType) {
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$anonymousFunction->stmts[] = new \PhpParser\Node\Stmt\Return_($innerMethodCall);
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} else {
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$anonymousFunction->stmts[] = new \PhpParser\Node\Stmt\Expression($innerMethodCall);
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}
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if ($expr instanceof \PhpParser\Node\Expr\Variable && !$this->nodeNameResolver->isName($expr, 'this')) {
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$anonymousFunction->uses[] = new \PhpParser\Node\Expr\ClosureUse($expr);
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}
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return $anonymousFunction;
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}
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public function createAnonymousFunctionFromString(\PhpParser\Node\Expr $expr) : ?\PhpParser\Node\Expr\Closure
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{
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if (!$expr instanceof \PhpParser\Node\Scalar\String_) {
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// not supported yet
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throw new \Rector\Core\Exception\ShouldNotHappenException();
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}
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$phpCode = '<?php ' . $expr->value . ';';
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$contentNodes = (array) $this->parser->parse($phpCode);
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$anonymousFunction = new \PhpParser\Node\Expr\Closure();
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$firstNode = $contentNodes[0] ?? null;
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if (!$firstNode instanceof \PhpParser\Node\Stmt\Expression) {
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return null;
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}
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$stmt = $firstNode->expr;
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$this->simpleCallableNodeTraverser->traverseNodesWithCallable($stmt, function (\PhpParser\Node $node) : Node {
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if (!$node instanceof \PhpParser\Node\Scalar\String_) {
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return $node;
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}
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$match = \RectorPrefix20210815\Nette\Utils\Strings::match($node->value, self::DIM_FETCH_REGEX);
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if (!$match) {
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return $node;
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}
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$matchesVariable = new \PhpParser\Node\Expr\Variable('matches');
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return new \PhpParser\Node\Expr\ArrayDimFetch($matchesVariable, new \PhpParser\Node\Scalar\LNumber((int) $match['number']));
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});
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$anonymousFunction->stmts[] = new \PhpParser\Node\Stmt\Return_($stmt);
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$anonymousFunction->params[] = new \PhpParser\Node\Param(new \PhpParser\Node\Expr\Variable('matches'));
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return $anonymousFunction;
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}
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/**
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* @param Node[] $nodes
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* @param Param[] $paramNodes
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* @return Variable[]
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*/
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private function createUseVariablesFromParams(array $nodes, array $paramNodes) : array
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{
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$paramNames = [];
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foreach ($paramNodes as $paramNode) {
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$paramNames[] = $this->nodeNameResolver->getName($paramNode);
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}
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$variableNodes = $this->betterNodeFinder->findInstanceOf($nodes, \PhpParser\Node\Expr\Variable::class);
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/** @var Variable[] $filteredVariables */
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$filteredVariables = [];
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$alreadyAssignedVariables = [];
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foreach ($variableNodes as $variableNode) {
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// "$this" is allowed
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if ($this->nodeNameResolver->isName($variableNode, 'this')) {
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continue;
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}
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$variableName = $this->nodeNameResolver->getName($variableNode);
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if ($variableName === null) {
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continue;
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}
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if (\in_array($variableName, $paramNames, \true)) {
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continue;
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}
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$parentNode = $variableNode->getAttribute(\Rector\NodeTypeResolver\Node\AttributeKey::PARENT_NODE);
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if ($parentNode instanceof \PhpParser\Node\Expr\Assign) {
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$alreadyAssignedVariables[] = $variableName;
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}
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if ($this->nodeNameResolver->isNames($variableNode, $alreadyAssignedVariables)) {
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continue;
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}
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$filteredVariables[$variableName] = $variableNode;
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}
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return $filteredVariables;
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}
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/**
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* @param ParameterReflection[] $parameterReflections
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* @return Param[]
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*/
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private function createParams(array $parameterReflections) : array
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{
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$params = [];
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foreach ($parameterReflections as $parameterReflection) {
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$param = new \PhpParser\Node\Param(new \PhpParser\Node\Expr\Variable($parameterReflection->getName()));
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if (!$parameterReflection->getType() instanceof \PHPStan\Type\MixedType) {
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$param->type = $this->staticTypeMapper->mapPHPStanTypeToPhpParserNode($parameterReflection->getType(), \Rector\PHPStanStaticTypeMapper\ValueObject\TypeKind::PARAM());
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}
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$params[] = $param;
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}
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return $params;
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}
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/**
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* @param Param[] $params
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* @return \PhpParser\Node\Expr\MethodCall|\PhpParser\Node\Expr\StaticCall|null
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*/
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private function createInnerMethodCall(\PHPStan\Reflection\Php\PhpMethodReflection $phpMethodReflection, \PhpParser\Node\Expr $expr, array $params)
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{
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if ($phpMethodReflection->isStatic()) {
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$expr = $this->normalizeClassConstFetchForStatic($expr);
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if ($expr === null) {
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return null;
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}
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$innerMethodCall = new \PhpParser\Node\Expr\StaticCall($expr, $phpMethodReflection->getName());
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} else {
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$expr = $this->resolveExpr($expr);
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if (!$expr instanceof \PhpParser\Node\Expr) {
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return null;
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}
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$innerMethodCall = new \PhpParser\Node\Expr\MethodCall($expr, $phpMethodReflection->getName());
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}
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$innerMethodCall->args = $this->nodeFactory->createArgsFromParams($params);
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return $innerMethodCall;
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}
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/**
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* @return null|\PhpParser\Node\Name\FullyQualified|\PhpParser\Node\Expr
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*/
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private function normalizeClassConstFetchForStatic(\PhpParser\Node\Expr $expr)
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{
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if (!$expr instanceof \PhpParser\Node\Expr\ClassConstFetch) {
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return $expr;
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}
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if (!$this->nodeNameResolver->isName($expr->name, 'class')) {
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return $expr;
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}
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// dynamic name, nothing we can do
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$className = $this->nodeNameResolver->getName($expr->class);
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if ($className === null) {
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return null;
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}
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return new \PhpParser\Node\Name\FullyQualified($className);
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}
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/**
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* @return \PhpParser\Node\Expr\New_|\PhpParser\Node\Expr|null
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*/
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private function resolveExpr(\PhpParser\Node\Expr $expr)
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{
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if (!$expr instanceof \PhpParser\Node\Expr\ClassConstFetch) {
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return $expr;
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}
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if (!$this->nodeNameResolver->isName($expr->name, 'class')) {
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return $expr;
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}
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// dynamic name, nothing we can do
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$className = $this->nodeNameResolver->getName($expr->class);
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if ($className === null) {
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return null;
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}
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return new \PhpParser\Node\Expr\New_(new \PhpParser\Node\Name\FullyQualified($className));
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}
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}
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