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<?php declare(strict_types=1); /* * This file is part of PHP CS Fixer. * * (c) Fabien Potencier <fabien@symfony.com> * Dariusz Rumiński <dariusz.ruminski@gmail.com> * * This source file is subject to the MIT license that is bundled * with this source code in the file LICENSE. */ namespace PhpCsFixer\Fixer\Operator; use PhpCsFixer\AbstractFixer; use PhpCsFixer\FixerDefinition\CodeSample; use PhpCsFixer\FixerDefinition\FixerDefinition; use PhpCsFixer\FixerDefinition\FixerDefinitionInterface; use PhpCsFixer\Tokenizer\Analyzer\AlternativeSyntaxAnalyzer; use PhpCsFixer\Tokenizer\Analyzer\GotoLabelAnalyzer; use PhpCsFixer\Tokenizer\Analyzer\SwitchAnalyzer; use PhpCsFixer\Tokenizer\Token; use PhpCsFixer\Tokenizer\Tokens; /** * @author Dariusz Rumiński <dariusz.ruminski@gmail.com> */ final class TernaryOperatorSpacesFixer extends AbstractFixer { public function getDefinition(): FixerDefinitionInterface { return new FixerDefinition( 'Standardize spaces around ternary operator.', [new CodeSample("<?php \$a = \$a ?1 :0;\n")] ); } /** * {@inheritdoc} * * Must run after ArraySyntaxFixer, ListSyntaxFixer, TernaryToElvisOperatorFixer. */ public function getPriority(): int { return 1; } public function isCandidate(Tokens $tokens): bool { return $tokens->isAllTokenKindsFound(['?', ':']); } protected function applyFix(\SplFileInfo $file, Tokens $tokens): void { $alternativeSyntaxAnalyzer = new AlternativeSyntaxAnalyzer(); $gotoLabelAnalyzer = new GotoLabelAnalyzer(); $ternaryOperatorIndices = []; foreach ($tokens as $index => $token) { if (!$token->equalsAny(['?', ':'])) { continue; } if (SwitchAnalyzer::belongsToSwitch($tokens, $index)) { continue; } if ($alternativeSyntaxAnalyzer->belongsToAlternativeSyntax($tokens, $index)) { continue; } if ($gotoLabelAnalyzer->belongsToGoToLabel($tokens, $index)) { continue; } $ternaryOperatorIndices[] = $index; } foreach (array_reverse($ternaryOperatorIndices) as $index) { $token = $tokens[$index]; if ($token->equals('?')) { $nextNonWhitespaceIndex = $tokens->getNextNonWhitespace($index); if ($tokens[$nextNonWhitespaceIndex]->equals(':')) { // for `$a ?: $b` remove spaces between `?` and `:` $tokens->ensureWhitespaceAtIndex($index + 1, 0, ''); } else { // for `$a ? $b : $c` ensure space after `?` $this->ensureWhitespaceExistence($tokens, $index + 1, true); } // for `$a ? $b : $c` ensure space before `?` $this->ensureWhitespaceExistence($tokens, $index - 1, false); continue; } if ($token->equals(':')) { // for `$a ? $b : $c` ensure space after `:` $this->ensureWhitespaceExistence($tokens, $index + 1, true); $prevNonWhitespaceToken = $tokens[$tokens->getPrevNonWhitespace($index)]; if (!$prevNonWhitespaceToken->equals('?')) { // for `$a ? $b : $c` ensure space before `:` $this->ensureWhitespaceExistence($tokens, $index - 1, false); } } } } private function ensureWhitespaceExistence(Tokens $tokens, int $index, bool $after): void { if ($tokens[$index]->isWhitespace()) { if ( !str_contains($tokens[$index]->getContent(), "\n") && !$tokens[$index - 1]->isComment() ) { $tokens[$index] = new Token([T_WHITESPACE, ' ']); } return; } $index += $after ? 0 : 1; $tokens->insertAt($index, new Token([T_WHITESPACE, ' '])); } }
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