mirror of https://github.com/rectorphp/rector.git
114 lines
3.9 KiB
PHP
114 lines
3.9 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\MysqlToMysqli\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;
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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\Name;
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use PhpParser\Node\Scalar\String_;
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use Rector\Core\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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* @changelog https://www.phpclasses.org/blog/package/9199/post/3-Smoothly-Migrate-your-PHP-Code-using-the-Old-MySQL-extension-to-MySQLi.html
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*
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* @see \Rector\Tests\MysqlToMysqli\Rector\FuncCall\MysqlFuncCallToMysqliRector\MysqlFuncCallToMysqliRectorTest
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*/
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final class MysqlFuncCallToMysqliRector extends AbstractRector
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{
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/**
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* @var string
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*/
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private const MYSQLI_QUERY = 'mysqli_query';
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Converts more complex mysql functions to mysqli', [new CodeSample(<<<'CODE_SAMPLE'
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mysql_drop_db($database);
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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mysqli_query('DROP DATABASE ' . $database);
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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 [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(Node $node) : ?FuncCall
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{
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if ($this->isName($node, 'mysql_create_db')) {
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return $this->processMysqlCreateDb($node);
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}
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if ($this->isName($node, 'mysql_drop_db')) {
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return $this->processMysqlDropDb($node);
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}
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if ($this->isName($node, 'mysql_list_dbs')) {
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$node->name = new Name(self::MYSQLI_QUERY);
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$node->args[0] = new Arg(new String_('SHOW DATABASES'));
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return $node;
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}
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if ($this->isName($node, 'mysql_list_fields') && $node->args[0] instanceof Arg && $node->args[1] instanceof Arg) {
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$node->name = new Name(self::MYSQLI_QUERY);
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$node->args[0]->value = $this->joinStringWithNode('SHOW COLUMNS FROM', $node->args[1]->value);
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unset($node->args[1]);
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return $node;
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}
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if ($this->isName($node, 'mysql_list_tables') && $node->args[0] instanceof Arg) {
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$node->name = new Name(self::MYSQLI_QUERY);
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$node->args[0]->value = $this->joinStringWithNode('SHOW TABLES FROM', $node->args[0]->value);
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return $node;
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}
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return null;
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}
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private function processMysqlCreateDb(FuncCall $funcCall) : ?FuncCall
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{
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if ($funcCall->isFirstClassCallable()) {
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return null;
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}
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if (!isset($funcCall->getArgs()[0])) {
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return null;
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}
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if (!$funcCall->args[0] instanceof Arg) {
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return null;
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}
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$funcCall->name = new Name(self::MYSQLI_QUERY);
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$funcCall->args[0]->value = $this->joinStringWithNode('CREATE DATABASE', $funcCall->args[0]->value);
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return $funcCall;
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}
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private function processMysqlDropDb(FuncCall $funcCall) : ?FuncCall
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{
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if ($funcCall->isFirstClassCallable()) {
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return null;
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}
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if (!isset($funcCall->getArgs()[0])) {
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return null;
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}
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if (!$funcCall->args[0] instanceof Arg) {
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return null;
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}
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$funcCall->name = new Name(self::MYSQLI_QUERY);
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$funcCall->args[0]->value = $this->joinStringWithNode('DROP DATABASE', $funcCall->args[0]->value);
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return $funcCall;
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}
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/**
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* @return \PhpParser\Node\Scalar\String_|\PhpParser\Node\Expr\BinaryOp\Concat
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*/
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private function joinStringWithNode(string $string, Expr $expr)
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{
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if ($expr instanceof String_) {
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return new String_($string . ' ' . $expr->value);
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}
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return new Concat(new String_($string . ' '), $expr);
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}
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}
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