Code improvements (#1649)

* use global namespace for faster lookups
* phpstan level 5

src/Validator/Constraints/ProjectValidator.php

@@ -28,7 +28,7 @@ class ProjectValidator extends ConstraintValidator
             throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\Project');
         }
 
-        if (!is_object($value) || !($value instanceof Project)) {
+        if (!\is_object($value) || !($value instanceof Project)) {
             return;
         }
 

src/Validator/Constraints/RoleValidator.php

@@ -37,7 +37,7 @@ class RoleValidator extends ConstraintValidator
 
         $roles = $value;
 
-        if (!is_array($roles)) {
+        if (!\is_array($roles)) {
             $roles = [$roles];
         }
 
@@ -45,7 +45,7 @@ class RoleValidator extends ConstraintValidator
         $allowedRoles = array_map('strtoupper', $this->service->getAvailableNames());
 
         foreach ($roles as $role) {
-            if (!is_string($role) || !in_array($role, $allowedRoles)) {
+            if (!\is_string($role) || !\in_array($role, $allowedRoles)) {
                 $this->context->buildViolation($constraint->message)
                     ->setParameter('{{ value }}', $this->formatValue($role))
                     ->setCode(Role::ROLE_ERROR)

src/Validator/Constraints/TimesheetMultiUpdateValidator.php

@@ -28,7 +28,7 @@ final class TimesheetMultiUpdateValidator extends ConstraintValidator
             throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\TimesheetMultiUpdate');
         }
 
-        if (!is_object($value) || !($value instanceof TimesheetMultiUpdateDTO)) {
+        if (!\is_object($value) || !($value instanceof TimesheetMultiUpdateDTO)) {
             return;
         }
 

src/Validator/Constraints/TimesheetValidator.php

@@ -55,7 +55,7 @@ class TimesheetValidator extends ConstraintValidator
             throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\Timesheet');
         }
 
-        if (!is_object($value) || !($value instanceof TimesheetEntity)) {
+        if (!\is_object($value) || !($value instanceof TimesheetEntity)) {
             return;
         }