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SpreadOneItem.php
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SpreadOneItem.php
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<?php
/**
* This code is licensed under the BSD 3-Clause License.
*
* Copyright (c) 2017, 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\Operator;
use Infection\Mutator\Definition;
use Infection\Mutator\GetMutatorName;
use Infection\Mutator\Mutator;
use Infection\Mutator\MutatorCategory;
use PhpParser\Node;
/**
* @internal
*
* @implements Mutator<Node\Expr\ArrayItem>
*/
final class SpreadOneItem implements Mutator
{
use GetMutatorName;
public static function getDefinition(): ?Definition
{
return new Definition(
<<<'TXT'
Replaces a spread operator in an array expression with its first element only. For example:
```php
$x = [...$collection, 4, 5];
```
Will be mutated to:
```php
$x = [[...$collection][0], 4, 5];
```
TXT
,
MutatorCategory::SEMANTIC_REDUCTION,
null,
<<<'DIFF'
- $x = [...$collection, 4, 5];
+ $x = [[...$collection][0], 4, 5];
DIFF
);
}
/**
* @psalm-mutation-free
*
* @return iterable<Node\Expr\ArrayItem>
*/
public function mutate(Node $node): iterable
{
yield new Node\Expr\ArrayItem(
new Node\Expr\ArrayDimFetch(
new Node\Expr\Array_(
[$node],
$node->getAttributes() + ['kind' => Node\Expr\Array_::KIND_SHORT]
),
new Node\Scalar\LNumber(0),
$node->value->getAttributes()
),
null,
false,
$node->getAttributes(),
false
);
}
public function canMutate(Node $node): bool
{
return $node instanceof Node\Expr\ArrayItem && $node->unpack;
}
}