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[Downgrade] [PHP 7.2] Make DowngradeParameterTypeWideningRector always downgrade to phpdoc type (#390)
134 lines
5.8 KiB
PHP
134 lines
5.8 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php70\Rector\FuncCall;
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use PhpParser\Node;
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use PhpParser\Node\Arg;
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use PhpParser\Node\Expr\ArrayDimFetch;
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use PhpParser\Node\Expr\Assign;
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use PhpParser\Node\Expr\BinaryOp\Concat;
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use PhpParser\Node\Expr\FuncCall;
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use PhpParser\Node\Expr\Ternary;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Name;
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use PhpParser\Node\Scalar\LNumber;
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use PhpParser\Node\Scalar\String_;
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use Rector\Core\Rector\AbstractRector;
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use Rector\NodeTypeResolver\Node\AttributeKey;
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use Rector\Php70\EregToPcreTransformer;
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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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* @changelog http://php.net/reference.pcre.pattern.posix https://stackoverflow.com/a/17033826/1348344 https://docstore.mik.ua/orelly/webprog/pcook/ch13_02.htm
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*
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* @see \Rector\Tests\Php70\Rector\FuncCall\EregToPregMatchRector\EregToPregMatchRectorTest
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*/
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final class EregToPregMatchRector extends \Rector\Core\Rector\AbstractRector
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{
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/**
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* @var array<string, string>
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*/
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private const OLD_NAMES_TO_NEW_ONES = ['ereg' => 'preg_match', 'eregi' => 'preg_match', 'ereg_replace' => 'preg_replace', 'eregi_replace' => 'preg_replace', 'split' => 'preg_split', 'spliti' => 'preg_split'];
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/**
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* @var \Rector\Php70\EregToPcreTransformer
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*/
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private $eregToPcreTransformer;
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public function __construct(\Rector\Php70\EregToPcreTransformer $eregToPcreTransformer)
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{
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$this->eregToPcreTransformer = $eregToPcreTransformer;
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}
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public function getRuleDefinition() : \Symplify\RuleDocGenerator\ValueObject\RuleDefinition
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{
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return new \Symplify\RuleDocGenerator\ValueObject\RuleDefinition('Changes ereg*() to preg*() calls', [new \Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample('ereg("hi")', 'preg_match("#hi#");')]);
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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 [\PhpParser\Node\Expr\FuncCall::class];
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}
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/**
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* @param FuncCall $node
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*/
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public function refactor(\PhpParser\Node $node) : ?\PhpParser\Node
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{
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$functionName = $this->getName($node);
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if ($functionName === null) {
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return null;
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}
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if (!isset(self::OLD_NAMES_TO_NEW_ONES[$functionName])) {
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return null;
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}
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$patternNode = $node->args[0]->value;
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if ($patternNode instanceof \PhpParser\Node\Scalar\String_) {
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$this->processStringPattern($node, $patternNode, $functionName);
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} elseif ($patternNode instanceof \PhpParser\Node\Expr\Variable) {
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$this->processVariablePattern($node, $patternNode, $functionName);
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}
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$this->processSplitLimitArgument($node, $functionName);
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$node->name = new \PhpParser\Node\Name(self::OLD_NAMES_TO_NEW_ONES[$functionName]);
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// ereg|eregi 3rd argument return value fix
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if (\in_array($functionName, ['ereg', 'eregi'], \true) && isset($node->args[2])) {
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$parentNode = $node->getAttribute(\Rector\NodeTypeResolver\Node\AttributeKey::PARENT_NODE);
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if ($parentNode instanceof \PhpParser\Node\Expr\Assign) {
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return $this->createTernaryWithStrlenOfFirstMatch($node);
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}
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}
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return $node;
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}
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private function processStringPattern(\PhpParser\Node\Expr\FuncCall $funcCall, \PhpParser\Node\Scalar\String_ $string, string $functionName) : void
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{
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$pattern = $string->value;
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$pattern = $this->eregToPcreTransformer->transform($pattern, $this->isCaseInsensitiveFunction($functionName));
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$funcCall->args[0]->value = new \PhpParser\Node\Scalar\String_($pattern);
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}
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private function processVariablePattern(\PhpParser\Node\Expr\FuncCall $funcCall, \PhpParser\Node\Expr\Variable $variable, string $functionName) : void
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{
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$pregQuotePatternNode = $this->nodeFactory->createFuncCall('preg_quote', [new \PhpParser\Node\Arg($variable), new \PhpParser\Node\Arg(new \PhpParser\Node\Scalar\String_('#'))]);
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$startConcat = new \PhpParser\Node\Expr\BinaryOp\Concat(new \PhpParser\Node\Scalar\String_('#'), $pregQuotePatternNode);
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$endDelimiter = $this->isCaseInsensitiveFunction($functionName) ? '#mi' : '#m';
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$concat = new \PhpParser\Node\Expr\BinaryOp\Concat($startConcat, new \PhpParser\Node\Scalar\String_($endDelimiter));
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$funcCall->args[0]->value = $concat;
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}
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/**
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* Equivalent of:
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* split(' ', 'hey Tom', 0);
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* ↓
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* preg_split('# #', 'hey Tom', 1);
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*/
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private function processSplitLimitArgument(\PhpParser\Node\Expr\FuncCall $funcCall, string $functionName) : void
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{
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if (\strncmp($functionName, 'split', \strlen('split')) !== 0) {
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return;
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}
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// 3rd argument - $limit, 0 → 1
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if (!isset($funcCall->args[2])) {
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return;
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}
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if (!$funcCall->args[2]->value instanceof \PhpParser\Node\Scalar\LNumber) {
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return;
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}
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/** @var LNumber $limitNumberNode */
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$limitNumberNode = $funcCall->args[2]->value;
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if ($limitNumberNode->value !== 0) {
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return;
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}
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$limitNumberNode->value = 1;
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}
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private function createTernaryWithStrlenOfFirstMatch(\PhpParser\Node\Expr\FuncCall $funcCall) : \PhpParser\Node\Expr\Ternary
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{
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$arrayDimFetch = new \PhpParser\Node\Expr\ArrayDimFetch($funcCall->args[2]->value, new \PhpParser\Node\Scalar\LNumber(0));
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$strlenFuncCall = $this->nodeFactory->createFuncCall('strlen', [$arrayDimFetch]);
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return new \PhpParser\Node\Expr\Ternary($funcCall, $strlenFuncCall, $this->nodeFactory->createFalse());
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}
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private function isCaseInsensitiveFunction(string $functionName) : bool
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{
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if (\strpos($functionName, 'eregi') !== \false) {
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return \true;
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}
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return \strpos($functionName, 'spliti') !== \false;
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}
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}
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