function EarlyExitSniff::processElse

1 call to EarlyExitSniff::processElse()

EarlyExitSniff::process in vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/ControlStructures/EarlyExitSniff.php

* @phpcsSuppress SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint *

File

vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/ControlStructures/EarlyExitSniff.php, line 79

Class

EarlyExitSniff

Namespace

SlevomatCodingStandard\Sniffs\ControlStructures

Code

private function processElse(File $phpcsFile, int $elsePointer) : void {
    $tokens = $phpcsFile->getTokens();
    if (!array_key_exists('scope_opener', $tokens[$elsePointer])) {
        // Else without curly braces is not supported.
        return;
    }
    try {
        $allConditionsPointers = $this->getAllConditionsPointers($phpcsFile, $elsePointer);
    } catch (Throwable $e) {
        // Else without curly braces is not supported.
        return;
    }
    if (TokenHelper::findNext($phpcsFile, T_FUNCTION, $tokens[$elsePointer]['scope_opener'] + 1, $tokens[$elsePointer]['scope_closer']) !== null) {
        return;
    }
    $ifPointer = $allConditionsPointers[0];
    $ifEarlyExitPointer = null;
    $elseEarlyExitPointer = null;
    $previousConditionPointer = null;
    $previousConditionEarlyExitPointer = null;
    foreach ($allConditionsPointers as $conditionPointer) {
        $conditionEarlyExitPointer = $this->findEarlyExitInScope($phpcsFile, $tokens[$conditionPointer]['scope_opener'], $tokens[$conditionPointer]['scope_closer']);
        if ($conditionPointer === $elsePointer) {
            $elseEarlyExitPointer = $conditionEarlyExitPointer;
            continue;
        }
        if (count($allConditionsPointers) > 2 && $conditionEarlyExitPointer === null) {
            return;
        }
        $previousConditionPointer = $conditionPointer;
        $previousConditionEarlyExitPointer = $conditionEarlyExitPointer;
        if ($conditionPointer === $ifPointer) {
            $ifEarlyExitPointer = $conditionEarlyExitPointer;
            continue;
        }
    }
    if ($ifEarlyExitPointer === null && $elseEarlyExitPointer === null) {
        return;
    }
    if ($elseEarlyExitPointer !== null && $previousConditionEarlyExitPointer === null) {
        $fix = $phpcsFile->addFixableError('Use early exit instead of "else".', $elsePointer, self::CODE_EARLY_EXIT_NOT_USED);
        if (!$fix) {
            return;
        }
        $ifCodePointers = $this->getScopeCodePointers($phpcsFile, $ifPointer);
        $elseCode = $this->getScopeCode($phpcsFile, $elsePointer);
        $negativeIfCondition = ConditionHelper::getNegativeCondition($phpcsFile, $tokens[$ifPointer]['parenthesis_opener'], $tokens[$ifPointer]['parenthesis_closer']);
        $afterIfCode = IndentationHelper::fixIndentation($phpcsFile, $ifCodePointers, IndentationHelper::getIndentation($phpcsFile, $ifPointer));
        $ifContent = sprintf('if %s {%s}%s%s', $negativeIfCondition, $elseCode, $phpcsFile->eolChar, $afterIfCode);
        $phpcsFile->fixer
            ->beginChangeset();
        FixerHelper::change($phpcsFile, $ifPointer, $tokens[$elsePointer]['scope_closer'], $ifContent);
        $phpcsFile->fixer
            ->endChangeset();
        return;
    }
    $fix = $phpcsFile->addFixableError('Remove useless "else" to reduce code nesting.', $elsePointer, self::CODE_USELESS_ELSE);
    if (!$fix) {
        return;
    }
    $elseCodePointers = $this->getScopeCodePointers($phpcsFile, $elsePointer);
    $afterIfCode = IndentationHelper::fixIndentation($phpcsFile, $elseCodePointers, IndentationHelper::getIndentation($phpcsFile, $ifPointer));
    $phpcsFile->fixer
        ->beginChangeset();
    $previousConditionContent = sprintf('%s%s', $phpcsFile->eolChar, $afterIfCode);
    FixerHelper::change($phpcsFile, $tokens[$previousConditionPointer]['scope_closer'] + 1, $tokens[$elsePointer]['scope_closer'], $previousConditionContent);
    $phpcsFile->fixer
        ->endChangeset();
}