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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| <?php | ||
| /** | ||
| * This code is licensed under the BSD 3-Clause License. | ||
| * | ||
| * Copyright (c) 2017-2019, 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\Extensions; | ||
|
|
||
| use Generator; | ||
| use Infection\Mutator\Util\Mutator; | ||
| use Infection\Mutator\Util\MutatorConfig; | ||
| use PhpParser\Node; | ||
|
|
||
| /** | ||
| * @internal | ||
| */ | ||
| final class BCMath extends Mutator | ||
| { | ||
| private $converters; | ||
|
|
||
| public function __construct(MutatorConfig $config) | ||
| { | ||
| parent::__construct($config); | ||
|
|
||
| $settings = $this->getSettings(); | ||
|
|
||
| $this->setupConverters($settings); | ||
| } | ||
|
|
||
| /** | ||
| * @return Node|Node[]|Generator | ||
| */ | ||
| public function mutate(Node $node) | ||
| { | ||
| yield from $this->converters[$this->getFunctionName($node)]($node); | ||
| } | ||
|
|
||
| protected function mutatesNode(Node $node): bool | ||
| { | ||
| $functionName = $this->getFunctionName($node); | ||
|
|
||
| return $functionName !== null && isset($this->converters[$functionName]) && \function_exists($functionName); | ||
| } | ||
|
|
||
| private function getFunctionName(Node $node): ?string | ||
| { | ||
| if (!$node instanceof Node\Expr\FuncCall || !$node->name instanceof Node\Name) { | ||
| return null; | ||
| } | ||
|
|
||
| return \strtolower($node->name->toString()); | ||
| } | ||
|
|
||
| private function setupConverters(array $functionsMap): void | ||
| { | ||
| $converters = [ | ||
| 'bcadd' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Plus::class) | ||
| ), | ||
| 'bccomp' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Spaceship::class) | ||
| ), | ||
| 'bcdiv' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Div::class) | ||
| ), | ||
| 'bcmod' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Mod::class) | ||
| ), | ||
| 'bcmul' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Mul::class) | ||
| ), | ||
| 'bcpow' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Pow::class) | ||
| ), | ||
| 'bcsub' => $this->minArgsCastString(2, | ||
| $this->binaryOp(Node\Expr\BinaryOp\Minus::class) | ||
| ), | ||
| 'bcsqrt' => $this->minArgsCastString(2, | ||
| $this->squareRoots() | ||
| ), | ||
| 'bcpowmod' => $this->minArgsCastString(3, | ||
| $this->powerModulo() | ||
| ), | ||
| ]; | ||
|
|
||
| $functionsToRemove = \array_filter($functionsMap, function ($isOn) { | ||
| return !$isOn; | ||
| }); | ||
|
|
||
| $this->converters = \array_diff_key($converters, $functionsToRemove); | ||
| } | ||
|
|
||
| private function minArgsCastString(int $minimumArgsCount, callable $converter): callable | ||
| { | ||
| return static function (Node\Expr\FuncCall $node) use ($minimumArgsCount, $converter): Generator { | ||
| if (\count($node->args) >= $minimumArgsCount) { | ||
| foreach ($converter($node) as $newNode) { | ||
| yield new Node\Expr\Cast\String_($newNode); | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| private function binaryOp(string $operator): callable | ||
| { | ||
| return static function (Node\Expr\FuncCall $node) use ($operator): Generator { | ||
| yield new $operator($node->args[0]->value, $node->args[1]->value); | ||
| }; | ||
| } | ||
|
|
||
| private function squareRoots(): callable | ||
| { | ||
| return static function (Node\Expr\FuncCall $node): Generator { | ||
| yield new Node\Expr\FuncCall( | ||
| new Node\Name('\sqrt'), | ||
| [$node->args[0], $node->args[1]] | ||
| ); | ||
| }; | ||
| } | ||
|
|
||
| private function powerModulo(): callable | ||
| { | ||
| return static function (Node\Expr\FuncCall $node): Generator { | ||
| yield new Node\Expr\BinaryOp\Mod( | ||
| new Node\Expr\FuncCall( | ||
| new Node\Name('\pow'), | ||
| [$node->args[0], $node->args[1]] | ||
| ), | ||
| $node->args[2]->value | ||
| ); | ||
| }; | ||
| } | ||
| } |
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