variadicAnalyzer = $variadicAnalyzer;
$this->reflectionResolver = $reflectionResolver;
}
public function provideMinPhpVersion() : int
{
return PhpVersionFeature::NO_EXTRA_PARAMETERS;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Remove extra parameters', [new CodeSample('strlen("asdf", 1);', 'strlen("asdf");')]);
}
/**
* @return array>
*/
public function getNodeTypes() : array
{
return [FuncCall::class, MethodCall::class, StaticCall::class];
}
/**
* @param FuncCall|MethodCall|StaticCall $node
*/
public function refactor(Node $node) : ?Node
{
if ($this->shouldSkip($node)) {
return null;
}
// unreliable count of arguments
$functionLikeReflection = $this->reflectionResolver->resolveFunctionLikeReflectionFromCall($node);
if ($functionLikeReflection instanceof UnionTypeMethodReflection) {
return null;
}
if ($functionLikeReflection === null) {
return null;
}
if ($functionLikeReflection instanceof PhpMethodReflection) {
if ($functionLikeReflection->isAbstract()) {
return null;
}
$classReflection = $functionLikeReflection->getDeclaringClass();
if ($classReflection->isInterface()) {
return null;
}
}
$maximumAllowedParameterCount = $this->resolveMaximumAllowedParameterCount($functionLikeReflection);
if ($node->isFirstClassCallable()) {
return null;
}
if ($this->shouldSkipFunctionReflection($functionLikeReflection)) {
return null;
}
$numberOfArguments = \count($node->getRawArgs());
if ($numberOfArguments <= $maximumAllowedParameterCount) {
return null;
}
for ($i = $maximumAllowedParameterCount; $i <= $numberOfArguments; ++$i) {
unset($node->args[$i]);
}
return $node;
}
/**
* @param \PHPStan\Reflection\MethodReflection|\PHPStan\Reflection\FunctionReflection $reflection
*/
private function shouldSkipFunctionReflection($reflection) : bool
{
if ($reflection instanceof FunctionReflection) {
$fileName = (string) $reflection->getFileName();
if (\strpos($fileName, 'phpstan.phar') !== \false) {
return \true;
}
}
if ($reflection instanceof MethodReflection) {
$classReflection = $reflection->getDeclaringClass();
$fileName = (string) $classReflection->getFileName();
if (\strpos($fileName, 'phpstan.phar') !== \false) {
return \true;
}
}
return \false;
}
/**
* @param \PhpParser\Node\Expr\FuncCall|\PhpParser\Node\Expr\MethodCall|\PhpParser\Node\Expr\StaticCall $call
*/
private function shouldSkip($call) : bool
{
if ($call->args === []) {
return \true;
}
if ($call instanceof StaticCall) {
if (!$call->class instanceof Name) {
return \true;
}
if ($this->isName($call->class, ObjectReference::PARENT)) {
return \true;
}
}
return $this->variadicAnalyzer->hasVariadicParameters($call);
}
/**
* @param \PHPStan\Reflection\MethodReflection|\PHPStan\Reflection\FunctionReflection $functionLikeReflection
*/
private function resolveMaximumAllowedParameterCount($functionLikeReflection) : int
{
$parameterCounts = [0];
foreach ($functionLikeReflection->getVariants() as $parametersAcceptor) {
$parameterCounts[] = \count($parametersAcceptor->getParameters());
}
return \max($parameterCounts);
}
}