100 lines
2.7 KiB
PHP
100 lines
2.7 KiB
PHP
<?php declare(strict_types = 1);
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namespace SlevomatCodingStandard\Sniffs\ControlStructures;
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use PHP_CodeSniffer\Files\File;
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use PHP_CodeSniffer\Sniffs\Sniff;
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use PHP_CodeSniffer\Util\Tokens;
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use SlevomatCodingStandard\Helpers\FixerHelper;
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use SlevomatCodingStandard\Helpers\IdentificatorHelper;
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use SlevomatCodingStandard\Helpers\SniffSettingsHelper;
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use SlevomatCodingStandard\Helpers\TokenHelper;
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use const T_COALESCE;
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use const T_EQUAL;
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use const T_SEMICOLON;
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class RequireNullCoalesceEqualOperatorSniff implements Sniff
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{
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public const CODE_REQUIRED_NULL_COALESCE_EQUAL_OPERATOR = 'RequiredNullCoalesceEqualOperator';
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/** @var bool|null */
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public $enable = null;
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/**
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* @return array<int, (int|string)>
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*/
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public function register(): array
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{
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return [
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T_EQUAL,
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];
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}
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/**
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* @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
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* @param int $equalPointer
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*/
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public function process(File $phpcsFile, $equalPointer): void
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{
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$this->enable = SniffSettingsHelper::isEnabledByPhpVersion($this->enable, 70400);
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if (!$this->enable) {
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return;
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}
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/** @var int $variableStartPointer */
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$variableStartPointer = TokenHelper::findNextEffective($phpcsFile, $equalPointer + 1);
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$variableEndPointer = IdentificatorHelper::findEndPointer($phpcsFile, $variableStartPointer);
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if ($variableEndPointer === null) {
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return;
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}
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$nullCoalescePointer = TokenHelper::findNextEffective($phpcsFile, $variableEndPointer + 1);
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$tokens = $phpcsFile->getTokens();
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if ($tokens[$nullCoalescePointer]['code'] !== T_COALESCE) {
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return;
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}
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$variableContent = IdentificatorHelper::getContent($phpcsFile, $variableStartPointer, $variableEndPointer);
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/** @var int $beforeEqualEndPointer */
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$beforeEqualEndPointer = TokenHelper::findPreviousEffective($phpcsFile, $equalPointer - 1);
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$beforeEqualStartPointer = IdentificatorHelper::findStartPointer($phpcsFile, $beforeEqualEndPointer);
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if ($beforeEqualStartPointer === null) {
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return;
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}
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$beforeEqualVariableContent = IdentificatorHelper::getContent($phpcsFile, $beforeEqualStartPointer, $beforeEqualEndPointer);
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if ($beforeEqualVariableContent !== $variableContent) {
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return;
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}
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$semicolonPointer = TokenHelper::findNext($phpcsFile, T_SEMICOLON, $equalPointer + 1);
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if (TokenHelper::findNext($phpcsFile, Tokens::$operators, $nullCoalescePointer + 1, $semicolonPointer) !== null) {
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return;
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}
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$fix = $phpcsFile->addFixableError(
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'Use "??=" operator instead of "=" and "??".',
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$equalPointer,
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self::CODE_REQUIRED_NULL_COALESCE_EQUAL_OPERATOR
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);
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if (!$fix) {
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return;
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}
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$phpcsFile->fixer->beginChangeset();
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FixerHelper::change($phpcsFile, $equalPointer, $nullCoalescePointer, '??=');
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$phpcsFile->fixer->endChangeset();
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}
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}
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