2020-01-04 12:51:09 +00:00
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<?php
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declare(strict_types=1);
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namespace Rector\CodeQuality\Rector\For_;
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use PhpParser\Node;
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use PhpParser\Node\Expr\Assign;
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use PhpParser\Node\Expr\FuncCall;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Stmt\For_;
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2020-02-06 21:48:18 +00:00
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use Rector\Core\Rector\AbstractRector;
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2020-08-22 13:02:55 +00:00
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use Rector\NetteKdyby\Naming\VariableNaming;
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2020-01-04 14:30:53 +00:00
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use Rector\NodeTypeResolver\Node\AttributeKey;
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2020-11-16 17:50:38 +00:00
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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2020-01-04 12:51:09 +00:00
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/**
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* @see \Rector\CodeQuality\Tests\Rector\For_\ForRepeatedCountToOwnVariableRector\ForRepeatedCountToOwnVariableRectorTest
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*/
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final class ForRepeatedCountToOwnVariableRector extends AbstractRector
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{
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/**
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2020-08-22 13:02:55 +00:00
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* @var VariableNaming
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2020-01-04 12:51:09 +00:00
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*/
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2020-08-22 13:02:55 +00:00
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private $variableNaming;
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public function __construct(VariableNaming $variableNaming)
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{
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$this->variableNaming = $variableNaming;
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}
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2020-01-04 12:51:09 +00:00
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2020-11-16 17:50:38 +00:00
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public function getRuleDefinition(): RuleDefinition
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2020-01-04 12:51:09 +00:00
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{
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2020-11-16 17:50:38 +00:00
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return new RuleDefinition(
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'Change count() in for function to own variable',
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[
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new CodeSample(
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<<<'CODE_SAMPLE'
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2020-01-04 12:51:09 +00:00
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class SomeClass
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{
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public function run($items)
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{
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for ($i = 5; $i <= count($items); $i++) {
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echo $items[$i];
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}
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}
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}
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2020-09-15 08:23:13 +00:00
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CODE_SAMPLE
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2020-01-04 12:51:09 +00:00
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,
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2020-11-16 17:50:38 +00:00
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<<<'CODE_SAMPLE'
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2020-01-04 12:51:09 +00:00
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class SomeClass
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{
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public function run($items)
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{
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$itemsCount = count($items);
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for ($i = 5; $i <= $itemsCount; $i++) {
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echo $items[$i];
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}
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}
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}
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2020-09-15 08:23:13 +00:00
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CODE_SAMPLE
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2020-11-16 17:50:38 +00:00
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),
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]);
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2020-01-04 12:51:09 +00:00
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}
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/**
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* @return string[]
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*/
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public function getNodeTypes(): array
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{
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return [For_::class];
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}
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/**
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* @param For_ $node
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*/
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public function refactor(Node $node): ?Node
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{
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$countInCond = null;
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2020-08-22 13:02:55 +00:00
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$variableName = null;
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$forScope = $node->getAttribute(AttributeKey::SCOPE);
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2020-01-04 12:51:09 +00:00
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2020-01-04 14:30:53 +00:00
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$this->traverseNodesWithCallable($node->cond, function (Node $node) use (
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&$countInCond,
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2020-08-22 13:02:55 +00:00
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&$variableName,
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$forScope
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2020-09-01 17:56:30 +00:00
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): ?Variable {
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2020-01-04 12:51:09 +00:00
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if (! $node instanceof FuncCall) {
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return null;
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}
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if (! $this->isName($node, 'count')) {
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return null;
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}
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$countInCond = $node;
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2020-02-21 14:54:51 +00:00
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2020-08-22 13:02:55 +00:00
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$variableName = $this->variableNaming->resolveFromFuncCallFirstArgumentWithSuffix(
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$node,
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'Count',
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'itemsCount',
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$forScope
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);
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2020-01-04 12:51:09 +00:00
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2020-08-22 13:02:55 +00:00
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return new Variable($variableName);
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2020-01-04 12:51:09 +00:00
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});
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2020-12-24 16:28:56 +00:00
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if ($countInCond === null) {
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return null;
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}
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if ($variableName === null) {
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2020-01-04 12:51:09 +00:00
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return null;
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}
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2020-08-22 13:02:55 +00:00
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$countAssign = new Assign(new Variable($variableName), $countInCond);
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2020-01-04 12:51:09 +00:00
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$this->addNodeBeforeNode($countAssign, $node);
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return $node;
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}
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}
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