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7e7a2f067a
476cfb00cb
disable fallback for now
94 lines
2.4 KiB
PHP
94 lines
2.4 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\Stmt;
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use PhpParser\Node;
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use PhpParser\Node\Stmt;
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use Rector\Contract\PhpParser\Node\StmtsAwareInterface;
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use Rector\NodeAnalyzer\TerminatedNodeAnalyzer;
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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\DeadCode\Rector\Stmt\RemoveUnreachableStatementRector\RemoveUnreachableStatementRectorTest
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*/
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final class RemoveUnreachableStatementRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\NodeAnalyzer\TerminatedNodeAnalyzer
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*/
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private $terminatedNodeAnalyzer;
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public function __construct(TerminatedNodeAnalyzer $terminatedNodeAnalyzer)
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{
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$this->terminatedNodeAnalyzer = $terminatedNodeAnalyzer;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Remove unreachable statements', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public function run()
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{
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return 5;
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$removeMe = 10;
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public function run()
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{
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return 5;
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}
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}
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CODE_SAMPLE
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)]);
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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 [StmtsAwareInterface::class];
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}
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/**
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* @param StmtsAwareInterface $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->stmts === null) {
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return null;
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}
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$originalStmts = $node->stmts;
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$cleanedStmts = $this->processCleanUpUnreachabelStmts($node, $node->stmts);
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if ($cleanedStmts === $originalStmts) {
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return null;
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}
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$node->stmts = $cleanedStmts;
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return $node;
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}
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/**
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* @param Stmt[] $stmts
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* @return Stmt[]
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*/
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private function processCleanUpUnreachabelStmts(StmtsAwareInterface $stmtsAware, array $stmts) : array
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{
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foreach ($stmts as $key => $stmt) {
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if (!isset($stmts[$key - 1])) {
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continue;
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}
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$previousStmt = $stmts[$key - 1];
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// unset...
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if ($this->terminatedNodeAnalyzer->isAlwaysTerminated($stmtsAware, $previousStmt, $stmt)) {
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\array_splice($stmts, $key);
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return $stmts;
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}
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}
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return $stmts;
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}
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}
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