public function persist(MethodContainer $container, $packageVersionId)
{
switch (true) {
case $container instanceof Clazz:
$type = 'class';
$superClass = $container->getSuperClass();
if ($superClasses = $container->getSuperClasses()) {
$superClasses = implode(',', $superClasses);
} else {
$superClasses = null;
}
if ($implementedInterfaces = $container->getImplementedInterfaces()) {
$implementedInterfaces = implode(',', $implementedInterfaces);
} else {
$implementedInterfaces = null;
}
$modifier = $container->getModifier();
$extendedInterfaces = null;
break;
case $container instanceof InterfaceC:
$type = 'interface';
$superClass = null;
$superClasses = null;
$implementedInterfaces = null;
$modifier = 0;
if ($extendedInterfaces = $container->getExtendedInterfaces()) {
$extendedInterfaces = implode(',', $extendedInterfaces);
} else {
$extendedInterfaces = null;
}
break;
case $container instanceof TraitC:
$type = 'trait';
$superClass = null;
$superClasses = null;
$implementedInterfaces = null;
$modifier = 0;
$extendedInterfaces = null;
break;
default:
throw new \InvalidArgumentException('Unknown MethodContainer ' . get_class($container));
}
$this->insertStmt->bindValue(1, $container->getName());
$this->insertStmt->bindValue(2, $container->isNormalized() ? 1 : 0, \PDO::PARAM_INT);
$this->insertStmt->bindValue(3, $packageVersionId, \PDO::PARAM_INT);
$this->insertStmt->bindValue(4, $type);
$this->insertStmt->bindValue(5, $superClass, null === $superClass ? \PDO::PARAM_NULL : \PDO::PARAM_STR);
$this->insertStmt->bindValue(6, $superClasses, null === $superClasses ? \PDO::PARAM_NULL : \PDO::PARAM_STR);
$this->insertStmt->bindValue(7, $implementedInterfaces, null === $implementedInterfaces ? \PDO::PARAM_NULL : \PDO::PARAM_STR);
$this->insertStmt->bindValue(8, $modifier, \PDO::PARAM_INT);
$this->insertStmt->bindValue(9, $extendedInterfaces, null === $extendedInterfaces ? \PDO::PARAM_NULL : \PDO::PARAM_STR);
$this->insertStmt->execute();
$containerId = $this->con->lastInsertId();
foreach ($container->getMethods() as $method) {
$this->methodPersister->persist($method, $packageVersionId, $containerId);
}
switch (true) {
case $container instanceof Clazz:
foreach ($container->getProperties() as $property) {
$this->propertyPersister->persist($property, $packageVersionId, $containerId);
}
foreach ($container->getConstants() as $constant) {
$this->constantPersister->persist($constant, $packageVersionId, $containerId);
}
break;
case $container instanceof InterfaceC:
foreach ($container->getConstants() as $constant) {
$this->constantPersister->persist($constant, $packageVersionId, $containerId);
}
break;
case $container instanceof TraitC:
break;
default:
throw new \InvalidArgumentException('Unknown MethodContainer ' . get_class($container));
}
}
public function registerClass(MethodContainer $class)
{
$class->setTypeRegistry($this);
$this->classes[strtolower($class->getName())] = $class;
}
public function setPackageVersion(PackageVersion $packageVersion)
{
parent::setPackageVersion($packageVersion);
foreach ($this->constants as $constant) {
if ($constant->isInherited()) {
continue;
}
$constant->setPackageVersion($packageVersion);
}
}
public function addContainer(MethodContainer $container)
{
$container->setPackageVersion($this);
$this->containers->set($container->getName(), $container);
}
/**
* Returns the inferred return type for the given function.
*
* If we cannot infer any type NO type is returned, this is also returned if we can only infer
* ALL type, or UNKNOWN type.
*
* We use two characteristics for inferring a return type. First, we are looking at how the
* return value of the function is used in the places from where it is called. Currently, we
* are only looking at whether it is passed to other functions/methods and what their expected
* parameter types are.
*
* Second, we also take a look at the exit points of the CFG of the function itself to see
* whether there are some specific types which we can infer. For example, a function might return
* NULL type, or ALL type in which case its return type would normally be set to ALL type.
* However, for our analysis here, we just ignore the ALL type, and add the NULL type to the
* list of allowed types.
*
* @param AbstractFunction $function
*
* @return PhpType
*/
private function inferReturnTypeForFunction(AbstractFunction $function, MethodContainer $container = null)
{
$types = array();
if ($container instanceof \Scrutinizer\PhpAnalyzer\Model\InterfaceC) {
foreach ($container->getImplementingClasses() as $class) {
if (null === ($implementedFunction = $class->getMethod($function->getName()))) {
continue;
}
$returnType = $implementedFunction->getReturnType();
if ($returnType->isUnknownType() || $returnType->isAllType()) {
continue;
}
$types[] = $returnType;
}
}
if (!$types) {
foreach ($function->getInCallSites() as $site) {
// We can only analyze call sites which are part of the code which is currently being
// scanned. Otherwise, we would need to persist the possible types to the database.
// This could be a future improvement though if we deem it necessary.
if (null === ($node = $site->getAstNode())) {
continue;
}
if (null === ($parent = $node->getAttribute('parent'))) {
continue;
}
switch (true) {
case $parent instanceof \PHPParser_Node_Arg:
if (null === ($callNode = $parent->getAttribute('parent'))) {
break;
}
$paramType = $this->getSpecificParamTypeForArg($callNode, $parent);
if ($paramType) {
$types[] = $paramType;
}
break;
case $parent instanceof \PHPParser_Node_Expr_Assign:
case $parent instanceof \PHPParser_Node_Expr_AssignRef:
foreach ($parent->var->getAttribute('maybe_using_vars', array()) as $varNode) {
if (null === ($argNode = $varNode->getAttribute('parent'))) {
continue;
}
if (!$argNode instanceof \PHPParser_Node_Arg) {
continue;
}
$callNode = $argNode->getAttribute('parent');
$paramType = $this->getSpecificParamTypeForArg($callNode, $argNode);
if (null !== $paramType) {
$types[] = $paramType;
}
}
break;
}
}
}
$cfa = new \Scrutinizer\PhpAnalyzer\ControlFlow\ControlFlowAnalysis();
$cfa->process($function->getAstNode());
$cfg = $cfa->getGraph();
foreach ($cfg->getDirectedSuccNodes($cfg->getImplicitReturn()) as $exitGraphNode) {
$exitNode = $exitGraphNode->getAstNode();
if (!$exitNode instanceof \PHPParser_Node_Stmt_Return || null === $exitNode->expr) {
$types[] = $this->registry->getNativeType('null');
continue;
}
$returnType = $exitNode->expr->getAttribute('type');
if ($returnType && !$returnType->isUnknownType() && !$returnType->isAllType()) {
$types[] = $returnType;
}
}
return $this->refineTypeForAnnotation($this->registry->createUnionType($types), true);
}
public function addClass(MethodContainer $container)
{
$this->classes[strtolower($container->getName())] = $container;
}
public function __construct($name)
{
parent::__construct($name);
$this->methods = new ArrayCollection();
$this->properties = new ArrayCollection();
}
private function scanMethod(\PHPParser_Node_Stmt_ClassMethod $stmt, MethodContainer $class)
{
$method = new Method($stmt->name);
$method->setAstNode($stmt);
$method->setReturnByRef($stmt->byRef);
// convert PHPParser modifier to our modifier
$modifier = 0;
if (\PHPParser_Node_Stmt_Class::MODIFIER_ABSTRACT === ($stmt->type & \PHPParser_Node_Stmt_Class::MODIFIER_ABSTRACT)) {
$modifier |= Method::MODIFIER_ABSTRACT;
}
if (\PHPParser_Node_Stmt_Class::MODIFIER_FINAL === ($stmt->type & \PHPParser_Node_Stmt_Class::MODIFIER_FINAL)) {
$modifier |= Method::MODIFIER_FINAL;
}
if (\PHPParser_Node_Stmt_Class::MODIFIER_STATIC === ($stmt->type & \PHPParser_Node_Stmt_Class::MODIFIER_STATIC)) {
$modifier |= Method::MODIFIER_STATIC;
}
// All interface methods are automatically abstract without being declared as such.
if ($class instanceof InterfaceC) {
$modifier |= Method::MODIFIER_ABSTRACT;
}
$method->setModifier($modifier);
$method->setVisibility(\PHPParser_Node_Stmt_Class::MODIFIER_PRIVATE === ($stmt->type & \PHPParser_Node_Stmt_Class::MODIFIER_PRIVATE) ? Method::VISIBILITY_PRIVATE : (\PHPParser_Node_Stmt_Class::MODIFIER_PROTECTED === ($stmt->type & \PHPParser_Node_Stmt_Class::MODIFIER_PROTECTED) ? Method::VISIBILITY_PROTECTED : Method::VISIBILITY_PUBLIC));
foreach ($this->paramParser->parse($stmt->params, 'Scrutinizer\\PhpAnalyzer\\Model\\MethodParameter') as $param) {
$method->addParameter($param);
}
foreach ($stmt->params as $i => $param) {
if (null !== ($docType = $this->commentParser->getTypeFromParamAnnotation($param, $param->name, true))) {
$method->setParamDocType($i, $docType);
}
}
if (null !== ($returnDocType = $this->commentParser->getTypeFromReturnAnnotation($stmt, true))) {
$method->setReturnDocType($returnDocType);
}
$class->addMethod($method);
}
private function copyMethods(MethodContainer $a, MethodContainer $b)
{
// merge in methods from $b into $a
foreach ($b->getMethods() as $containerMethod) {
// method already exists on $a
if ($a->hasMethod($containerMethod->getName())) {
// TODO: Check types for the method in $a, and if not complete
// copy over all available types from $b
continue;
}
$method = $containerMethod->getMethod();
// We do copy over all methods, even private ones. See above for properties.
$a->addMethod($method, $containerMethod->getDeclaringClass());
}
}
