Enhancement: Implement UnwrapArrayReplace mutator

src/Mutator/Unwrap/AbstractUnwrapMutator.php

@@ -50,21 +50,25 @@ abstract class AbstractUnwrapMutator extends Mutator
      */
     final public function mutate(Node $node)
     {
-        return $node->args[$this->getParameterIndex()];
+        foreach ($this->getParameterIndex($node) as $index) {
+            yield $node->args[$index];
+        }
     }
 
     abstract protected function getFunctionName(): string;
 
-    abstract protected function getParameterIndex(): int;
+    abstract protected function getParameterIndex(Node $node): \Generator;
 
     final protected function mutatesNode(Node $node): bool
     {
         if (!$node instanceof Node\Expr\FuncCall) {
             return false;
         }
 
-        if (!array_key_exists($this->getParameterIndex(), $node->args)) {
-            return false;
+        foreach ($this->getParameterIndex($node) as $index) {
+            if (!array_key_exists($index, $node->args)) {
+                return false;
+            }
         }
 
         return $node->name->toLowerString() === strtolower($this->getFunctionName());

src/Mutator/Unwrap/UnwrapArrayFilter.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'array_filter';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 0;
+        yield 0;
     }
 }

src/Mutator/Unwrap/UnwrapArrayFlip.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'array_flip';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 0;
+        yield 0;
     }
 }

src/Mutator/Unwrap/UnwrapArrayMap.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'array_map';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 1;
+        yield 1;
     }
 }

src/Mutator/Unwrap/UnwrapArrayReduce.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'array_reduce';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 2;
+        yield 2;
     }
 }

src/Mutator/Unwrap/UnwrapArrayReplace.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * This code is licensed under the BSD 3-Clause License.
+ *
+ * Copyright (c) 2017-2018, Maks Rafalko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the copyright holder nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+declare(strict_types=1);
+
+namespace Infection\Mutator\Unwrap;
+
+use PhpParser\Node;
+
+/**
+ * @internal
+ */
+final class UnwrapArrayReplace extends AbstractUnwrapMutator
+{
+    protected function getFunctionName(): string
+    {
+        return 'array_replace';
+    }
+
+    protected function getParameterIndex(Node $node): \Generator
+    {
+        yield from array_keys($node->args);
+    }
+}

src/Mutator/Unwrap/UnwrapArrayReverse.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'array_reverse';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 0;
+        yield 0;
     }
 }

src/Mutator/Unwrap/UnwrapStrRepeat.php

@@ -35,6 +35,8 @@
 
 namespace Infection\Mutator\Unwrap;
 
+use PhpParser\Node;
+
 /**
  * @internal
  */
@@ -45,8 +47,8 @@ protected function getFunctionName(): string
         return 'str_repeat';
     }
 
-    protected function getParameterIndex(): int
+    protected function getParameterIndex(Node $node): \Generator
     {
-        return 0;
+        yield 0;
     }
 }

src/Mutator/Util/MutatorProfile.php

@@ -191,6 +191,7 @@ final class MutatorProfile
         Mutator\Unwrap\UnwrapArrayFlip::class,
         Mutator\Unwrap\UnwrapArrayMap::class,
         Mutator\Unwrap\UnwrapArrayReduce::class,
+        Mutator\Unwrap\UnwrapArrayReplace::class,
         Mutator\Unwrap\UnwrapArrayReverse::class,
     ];
 
@@ -319,6 +320,7 @@ final class MutatorProfile
         'UnwrapArrayFlip' => Mutator\Unwrap\UnwrapArrayFlip::class,
         'UnwrapArrayMap' => Mutator\Unwrap\UnwrapArrayMap::class,
         'UnwrapArrayReduce' => Mutator\Unwrap\UnwrapArrayReduce::class,
+        'UnwrapArrayReplace' => Mutator\Unwrap\UnwrapArrayReplace::class,
         'UnwrapArrayReverse' => Mutator\Unwrap\UnwrapArrayReverse::class,
         'UnwrapStrRepeat' => Mutator\Unwrap\UnwrapStrRepeat::class,
     ];