Require Null Safe Object operator

Author: simPod

lib/Doctrine/ruleset.xml

@@ -266,6 +266,8 @@
  <rule ref="SlevomatCodingStandard.ControlStructures.RequireNullCoalesceEqualOperator"/>
  <!-- Require usage of null coalesce operator when possible -->
  <rule ref="SlevomatCodingStandard.ControlStructures.RequireNullCoalesceOperator"/>
+ <!-- Require usage of null safe operator when possible -->
+ <rule ref="SlevomatCodingStandard.ControlStructures.RequireNullSafeObjectOperator"/>
  <!-- Forbid usage of conditions when a simple return can be used -->
  <rule ref="SlevomatCodingStandard.ControlStructures.UselessIfConditionWithReturn"/>
  <!-- Forbid usage of boolean-only ternary operator usage (e.g. $foo ? true : false) -->

tests/expected_report.txt

@@ -27,6 +27,7 @@ tests/input/new_with_parentheses.php 18 0
 tests/input/not_spacing.php 8 0
 tests/input/null_coalesce_equal_operator.php 1 0
 tests/input/null_coalesce_operator.php 3 0
+tests/input/null_safe_operator.php 1 0
 tests/input/optimized-functions.php 1 0
 tests/input/PropertyTypeHintSpacing.php 6 0
 tests/input/return_type_on_closures.php 21 0
@@ -45,9 +46,9 @@ tests/input/use-ordering.php 1 0
 tests/input/useless-semicolon.php 2 0
 tests/input/UselessConditions.php 20 0
 ----------------------------------------------------------------------
-A TOTAL OF 377 ERRORS AND 0 WARNINGS WERE FOUND IN 41 FILES
+A TOTAL OF 378 ERRORS AND 0 WARNINGS WERE FOUND IN 42 FILES
 ----------------------------------------------------------------------
-PHPCBF CAN FIX 313 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
+PHPCBF CAN FIX 314 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
 ----------------------------------------------------------------------
 
 

tests/fixed/null_safe_operator.php

@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+$var = $object?->property;

tests/input/null_safe_operator.php

@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+$var = $object === null ? null : $object->property;

tests/php-compatibility.patch

@@ -11,7 +11,7 @@ index fd5432c..233e24d 100644
  tests/input/forbidden-comments.php 14 0
  tests/input/forbidden-functions.php 6 0
  tests/input/inline_type_hint_assertions.php 7 0
-@@ -23,9 +23,9 @@ tests/input/LowCaseTypes.php 2 0
+@@ -23,10 +23,10 @@ tests/input/LowCaseTypes.php 2 0
  tests/input/namespaces-spacing.php 7 0
  tests/input/NamingCamelCase.php 6 0
  tests/input/negation-operator.php 2 0
@@ -21,6 +21,7 @@ index fd5432c..233e24d 100644
 -tests/input/null_coalesce_equal_operator.php 1 0
 +tests/input/null_coalesce_equal_operator.php 5 0
  tests/input/null_coalesce_operator.php 3 0
+ tests/input/null_safe_operator.php 1 0
  tests/input/optimized-functions.php 1 0
  tests/input/PropertyTypeHintSpacing.php 6 0
 @@ -39,15 +39,15 @@ tests/input/superfluous-naming.php 11 0
@@ -34,11 +35,11 @@ index fd5432c..233e24d 100644
  tests/input/useless-semicolon.php 2 0
  tests/input/UselessConditions.php 20 0
  ----------------------------------------------------------------------
--A TOTAL OF 377 ERRORS AND 0 WARNINGS WERE FOUND IN 41 FILES
-+A TOTAL OF 386 ERRORS AND 0 WARNINGS WERE FOUND IN 41 FILES
+-A TOTAL OF 378 ERRORS AND 0 WARNINGS WERE FOUND IN 42 FILES
++A TOTAL OF 387 ERRORS AND 0 WARNINGS WERE FOUND IN 42 FILES
  ----------------------------------------------------------------------
--PHPCBF CAN FIX 313 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
-+PHPCBF CAN FIX 322 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
+-PHPCBF CAN FIX 314 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
++PHPCBF CAN FIX 323 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
  ----------------------------------------------------------------------