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<?php
declare (strict_types=1);
namespace Rector\Core\PhpParser;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\Node\Expr\StaticCall;
use PhpParser\Node\Param;
use PhpParser\Node\Stmt;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassLike;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Enum_;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\Interface_;
use PhpParser\Node\Stmt\Property;
use PhpParser\Node\Stmt\Trait_;
use PhpParser\NodeTraverser;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\ClassReflection;
use PHPStan\Reflection\FunctionReflection;
use PHPStan\Reflection\MethodReflection;
use PHPStan\Reflection\Php\PhpPropertyReflection;
use PHPStan\Reflection\ReflectionProvider;
use PHPStan\Type\TypeWithClassName;
use Rector\Core\Reflection\MethodReflectionResolver;
use Rector\Core\ValueObject\MethodName;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\NodeTypeResolver\NodeScopeAndMetadataDecorator;
use Rector\NodeTypeResolver\NodeTypeResolver;
use Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser;
use Rector\PhpDocParser\PhpParser\SmartPhpParser;
/**
* The nodes provided by this resolver is for read-only analysis only!
* They are not part of node tree processed by Rector, so any changes will not make effect in final printed file.
*/
final class AstResolver
{
/**
* @readonly
* @var \Rector\PhpDocParser\PhpParser\SmartPhpParser
*/
private $smartPhpParser;
/**
* @readonly
* @var \Rector\NodeTypeResolver\NodeScopeAndMetadataDecorator
*/
private $nodeScopeAndMetadataDecorator;
/**
* @readonly
* @var \Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser
*/
private $simpleCallableNodeTraverser;
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \PHPStan\Reflection\ReflectionProvider
*/
private $reflectionProvider;
/**
* @readonly
* @var \Rector\NodeTypeResolver\NodeTypeResolver
*/
private $nodeTypeResolver;
/**
* @readonly
* @var \Rector\Core\PhpParser\ClassLikeAstResolver
*/
private $classLikeAstResolver;
/**
* @readonly
* @var \Rector\Core\Reflection\MethodReflectionResolver
*/
private $methodReflectionResolver;
/**
* Parsing files is very heavy performance, so this will help to leverage it
* The value can be also null, when no statements could be parsed from the file.
*
* @var array<string, Stmt[]|null>
*/
private $parsedFileNodes = [];
public function __construct(SmartPhpParser $smartPhpParser, NodeScopeAndMetadataDecorator $nodeScopeAndMetadataDecorator, SimpleCallableNodeTraverser $simpleCallableNodeTraverser, NodeNameResolver $nodeNameResolver, ReflectionProvider $reflectionProvider, NodeTypeResolver $nodeTypeResolver, \Rector\Core\PhpParser\ClassLikeAstResolver $classLikeAstResolver, MethodReflectionResolver $methodReflectionResolver)
{
$this->smartPhpParser = $smartPhpParser;
$this->nodeScopeAndMetadataDecorator = $nodeScopeAndMetadataDecorator;
$this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser;
$this->nodeNameResolver = $nodeNameResolver;
$this->reflectionProvider = $reflectionProvider;
$this->nodeTypeResolver = $nodeTypeResolver;
$this->classLikeAstResolver = $classLikeAstResolver;
$this->methodReflectionResolver = $methodReflectionResolver;
}
/**
* @return \PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Trait_|\PhpParser\Node\Stmt\Interface_|\PhpParser\Node\Stmt\Enum_|null
*/
public function resolveClassFromName(string $className)
{
if (!$this->reflectionProvider->hasClass($className)) {
return null;
}
$classReflection = $this->reflectionProvider->getClass($className);
return $this->resolveClassFromClassReflection($classReflection);
}
public function resolveClassMethodFromMethodReflection(MethodReflection $methodReflection) : ?ClassMethod
{
$classReflection = $methodReflection->getDeclaringClass();
$fileName = $classReflection->getFileName();
// probably native PHP method → un-parseable
if ($fileName === null) {
return null;
}
$nodes = $this->parseFileNameToDecoratedNodes($fileName);
if ($nodes === []) {
return null;
}
$classLikeName = $classReflection->getName();
$methodName = $methodReflection->getName();
$classMethod = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($nodes, function (Node $node) use($classLikeName, $methodName, &$classMethod) : ?int {
if (!$node instanceof ClassLike) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $classLikeName)) {
return null;
}
$method = $node->getMethod($methodName);
if ($method instanceof ClassMethod) {
$classMethod = $method;
return NodeTraverser::STOP_TRAVERSAL;
}
return null;
});
/** @var ClassMethod|null $classMethod */
return $classMethod;
}
/**
* @param \PhpParser\Node\Expr\FuncCall|\PhpParser\Node\Expr\StaticCall|\PhpParser\Node\Expr\MethodCall $call
* @return \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|null
*/
public function resolveClassMethodOrFunctionFromCall($call, Scope $scope)
{
if ($call instanceof FuncCall) {
return $this->resolveFunctionFromFuncCall($call, $scope);
}
return $this->resolveClassMethodFromCall($call);
}
public function resolveFunctionFromFunctionReflection(FunctionReflection $functionReflection) : ?Function_
{
$fileName = $functionReflection->getFileName();
if ($fileName === null) {
return null;
}
$nodes = $this->parseFileNameToDecoratedNodes($fileName);
if ($nodes === []) {
return null;
}
$functionName = $functionReflection->getName();
$functionNode = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($nodes, function (Node $node) use($functionName, &$functionNode) : ?int {
if (!$node instanceof Function_) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $functionName)) {
return null;
}
$functionNode = $node;
return NodeTraverser::STOP_TRAVERSAL;
});
/** @var Function_|null $functionNode */
return $functionNode;
}
/**
* @param class-string $className
*/
public function resolveClassMethod(string $className, string $methodName) : ?ClassMethod
{
$methodReflection = $this->methodReflectionResolver->resolveMethodReflection($className, $methodName, null);
if (!$methodReflection instanceof MethodReflection) {
return null;
}
$classMethod = $this->resolveClassMethodFromMethodReflection($methodReflection);
if (!$classMethod instanceof ClassMethod) {
return $this->locateClassMethodInTrait($methodName, $methodReflection);
}
return $classMethod;
}
/**
* @param \PhpParser\Node\Expr\MethodCall|\PhpParser\Node\Expr\StaticCall $call
*/
public function resolveClassMethodFromCall($call) : ?ClassMethod
{
$callerStaticType = $call instanceof MethodCall ? $this->nodeTypeResolver->getType($call->var) : $this->nodeTypeResolver->getType($call->class);
if (!$callerStaticType instanceof TypeWithClassName) {
return null;
}
$methodName = $this->nodeNameResolver->getName($call->name);
if ($methodName === null) {
return null;
}
return $this->resolveClassMethod($callerStaticType->getClassName(), $methodName);
}
/**
* @return \PhpParser\Node\Stmt\Trait_|\PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Interface_|\PhpParser\Node\Stmt\Enum_|null
*/
public function resolveClassFromClassReflection(ClassReflection $classReflection)
{
return $this->classLikeAstResolver->resolveClassFromClassReflection($classReflection, $this);
}
/**
* @return Trait_[]
*/
public function parseClassReflectionTraits(ClassReflection $classReflection) : array
{
/** @var ClassReflection[] $classLikes */
$classLikes = $classReflection->getTraits(\true);
$traits = [];
foreach ($classLikes as $classLike) {
$fileName = $classLike->getFileName();
if ($fileName === null) {
continue;
}
$nodes = $this->parseFileNameToDecoratedNodes($fileName);
if ($nodes === []) {
continue;
}
$traitName = $classLike->getName();
$traitNode = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($nodes, function (Node $node) use($traitName, &$traitNode) : ?int {
if (!$node instanceof Trait_) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $traitName)) {
return null;
}
$traitNode = $node;
return NodeTraverser::STOP_TRAVERSAL;
});
if (!$traitNode instanceof Trait_) {
continue;
}
$traits[] = $traitNode;
}
return $traits;
}
/**
* @return \PhpParser\Node\Stmt\Property|\PhpParser\Node\Param|null
*/
public function resolvePropertyFromPropertyReflection(PhpPropertyReflection $phpPropertyReflection)
{
$classReflection = $phpPropertyReflection->getDeclaringClass();
$fileName = $classReflection->getFileName();
if ($fileName === null) {
return null;
}
$nodes = $this->parseFileNameToDecoratedNodes($fileName);
if ($nodes === []) {
return null;
}
$nativeReflectionProperty = $phpPropertyReflection->getNativeReflection();
$desiredClassName = $classReflection->getName();
$desiredPropertyName = $nativeReflectionProperty->getName();
/** @var Property|null $propertyNode */
$propertyNode = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($nodes, function (Node $node) use($desiredClassName, $desiredPropertyName, &$propertyNode) : ?int {
if (!$node instanceof ClassLike) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $desiredClassName)) {
return null;
}
$property = $node->getProperty($desiredPropertyName);
if ($property instanceof Property) {
$propertyNode = $property;
return NodeTraverser::STOP_TRAVERSAL;
}
return null;
});
if ($propertyNode instanceof Property) {
return $propertyNode;
}
// promoted property
return $this->findPromotedPropertyByName($nodes, $desiredClassName, $desiredPropertyName);
}
/**
* @return Stmt[]
*/
public function parseFileNameToDecoratedNodes(string $fileName) : array
{
if (isset($this->parsedFileNodes[$fileName])) {
return $this->parsedFileNodes[$fileName];
}
$stmts = $this->smartPhpParser->parseFile($fileName);
if ($stmts === []) {
return $this->parsedFileNodes[$fileName] = [];
}
return $this->parsedFileNodes[$fileName] = $this->nodeScopeAndMetadataDecorator->decorateNodesFromFile($fileName, $stmts);
}
private function locateClassMethodInTrait(string $methodName, MethodReflection $methodReflection) : ?ClassMethod
{
$classReflection = $methodReflection->getDeclaringClass();
$traits = $this->parseClassReflectionTraits($classReflection);
/** @var ClassMethod|null $classMethod */
$classMethod = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($traits, function (Node $node) use($methodName, &$classMethod) : ?int {
if (!$node instanceof ClassMethod) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $methodName)) {
return null;
}
$classMethod = $node;
return NodeTraverser::STOP_TRAVERSAL;
});
return $classMethod;
}
/**
* @param Stmt[] $stmts
*/
private function findPromotedPropertyByName(array $stmts, string $desiredClassName, string $desiredPropertyName) : ?Param
{
/** @var Param|null $paramNode */
$paramNode = null;
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($stmts, function (Node $node) use($desiredClassName, $desiredPropertyName, &$paramNode) {
if (!$node instanceof Class_) {
return null;
}
if (!$this->nodeNameResolver->isName($node, $desiredClassName)) {
return null;
}
$constructClassMethod = $node->getMethod(MethodName::CONSTRUCT);
if (!$constructClassMethod instanceof ClassMethod) {
return null;
}
foreach ($constructClassMethod->getParams() as $param) {
if ($param->flags === 0) {
continue;
}
if ($this->nodeNameResolver->isName($param, $desiredPropertyName)) {
$paramNode = $param;
return NodeTraverser::STOP_TRAVERSAL;
}
}
});
return $paramNode;
}
private function resolveFunctionFromFuncCall(FuncCall $funcCall, Scope $scope) : ?Function_
{
if ($funcCall->name instanceof Expr) {
return null;
}
if (!$this->reflectionProvider->hasFunction($funcCall->name, $scope)) {
return null;
}
$functionReflection = $this->reflectionProvider->getFunction($funcCall->name, $scope);
return $this->resolveFunctionFromFunctionReflection($functionReflection);
}
}