mirror of https://github.com/rectorphp/rector.git
59 lines
2.1 KiB
PHP
59 lines
2.1 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\CodeQuality\Rector\Ternary;
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use PhpParser\Node;
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use PhpParser\Node\Expr\BinaryOp\Identical;
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use PhpParser\Node\Expr\BinaryOp\NotIdentical;
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use PhpParser\Node\Expr\Ternary;
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use Rector\NodeManipulator\BinaryOpManipulator;
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use Rector\Php71\ValueObject\TwoNodeMatch;
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use Rector\Rector\AbstractRector;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @see \Rector\Tests\CodeQuality\Rector\Ternary\SimplifyTautologyTernaryRector\SimplifyTautologyTernaryRectorTest
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*/
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final class SimplifyTautologyTernaryRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\NodeManipulator\BinaryOpManipulator
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*/
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private $binaryOpManipulator;
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public function __construct(BinaryOpManipulator $binaryOpManipulator)
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{
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$this->binaryOpManipulator = $binaryOpManipulator;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Simplify tautology ternary to value', [new CodeSample('$value = ($fullyQualifiedTypeHint !== $typeHint) ? $fullyQualifiedTypeHint : $typeHint;', '$value = $fullyQualifiedTypeHint;')]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [Ternary::class];
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}
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/**
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* @param Ternary $node
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*/
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public function refactor(Node $node) : ?Node
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{
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if (!$node->cond instanceof NotIdentical && !$node->cond instanceof Identical) {
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return null;
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}
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$twoNodeMatch = $this->binaryOpManipulator->matchFirstAndSecondConditionNode($node->cond, function (Node $leftNode) use($node) : bool {
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return $this->nodeComparator->areNodesEqual($leftNode, $node->if);
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}, function (Node $leftNode) use($node) : bool {
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return $this->nodeComparator->areNodesEqual($leftNode, $node->else);
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});
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if (!$twoNodeMatch instanceof TwoNodeMatch) {
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return null;
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}
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return $node->cond instanceof NotIdentical ? $node->if : $node->else;
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}
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}
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