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<?php |
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declare(strict_types = 1); |
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/* |
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* This file is part of Zenify |
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* Copyright (c) 2012 Tomas Votruba (http://tomasvotruba.cz) |
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*/ |
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namespace ZenifyCodingStandard\Sniffs\Namespaces; |
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use PHP_CodeSniffer_File; |
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use PSR2_Sniffs_Namespaces_UseDeclarationSniff; |
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/** |
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* Rules: |
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* - There must be one USE keyword per declaration |
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* - USE declarations must go after the first namespace declaration |
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* - There must be 2 blank line(s) after the last USE statement |
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*/ |
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final class UseDeclarationSniff extends PSR2_Sniffs_Namespaces_UseDeclarationSniff |
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{ |
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/** |
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* @var int |
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*/ |
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public $blankLinesAfterUseStatement = 2; |
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/** |
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* {@inheritdoc} |
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*/ |
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1 |
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public function register() |
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{ |
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return [T_USE]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function process(PHP_CodeSniffer_File $file, $position) |
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{ |
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// Fix types |
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$this->blankLinesAfterUseStatement = (int) $this->blankLinesAfterUseStatement; |
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if ($this->shouldIgnoreUse($file, $position) === TRUE) { |
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return; |
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} |
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$this->checkIfSingleSpaceAfterUseKeyword($file, $position); |
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$this->checkIfOneUseDeclarationPerStatement($file, $position); |
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$this->checkIfUseComesAfterNamespaceDeclaration($file, $position); |
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// Only interested in the last USE statement from here onwards. |
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$nextUse = $file->findNext(T_USE, ($position + 1)); |
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while ($this->shouldIgnoreUse($file, $nextUse) === TRUE) { |
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$nextUse = $file->findNext(T_USE, ($nextUse + 1)); |
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if ($nextUse === FALSE) { |
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break; |
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} |
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} |
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if ($nextUse !== FALSE) { |
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return; |
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} |
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$this->checkBlankLineAfterLastUseStatement($file, $position); |
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} |
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/** |
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* Check if this use statement is part of the namespace block. |
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* @param PHP_CodeSniffer_File $file |
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* @param int|bool $position |
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*/ |
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private function shouldIgnoreUse(PHP_CodeSniffer_File $file, $position) : bool |
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{ |
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$tokens = $file->getTokens(); |
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// Ignore USE keywords inside closures. |
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$next = $file->findNext(T_WHITESPACE, ($position + 1), NULL, TRUE); |
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if ($tokens[$next]['code'] === T_OPEN_PARENTHESIS) { |
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return TRUE; |
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} |
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// Ignore USE keywords for traits. |
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if ($file->hasCondition($position, [T_CLASS, T_TRAIT]) === TRUE) { |
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return TRUE; |
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} |
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return FALSE; |
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} |
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private function checkIfSingleSpaceAfterUseKeyword(PHP_CodeSniffer_File $file, int $position) |
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{ |
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$tokens = $file->getTokens(); |
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if ($tokens[($position + 1)]['content'] !== ' ') { |
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$error = 'There must be a single space after the USE keyword'; |
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$file->addError($error, $position, 'SpaceAfterUse'); |
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} |
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} |
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private function checkIfOneUseDeclarationPerStatement(PHP_CodeSniffer_File $file, int $position) |
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{ |
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$tokens = $file->getTokens(); |
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$next = $file->findNext([T_COMMA, T_SEMICOLON], ($position + 1)); |
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if ($tokens[$next]['code'] === T_COMMA) { |
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$error = 'There must be one USE keyword per declaration'; |
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$file->addError($error, $position, 'MultipleDeclarations'); |
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} |
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} |
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private function checkIfUseComesAfterNamespaceDeclaration(PHP_CodeSniffer_File $file, int $position) |
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{ |
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$prev = $file->findPrevious(T_NAMESPACE, ($position - 1)); |
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if ($prev !== FALSE) { |
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$first = $file->findNext(T_NAMESPACE, 1); |
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if ($prev !== $first) { |
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$error = 'USE declarations must go after the first namespace declaration'; |
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$file->addError($error, $position, 'UseAfterNamespace'); |
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} |
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} |
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} |
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private function checkBlankLineAfterLastUseStatement(PHP_CodeSniffer_File $file, int $position) |
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{ |
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$tokens = $file->getTokens(); |
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$end = $file->findNext(T_SEMICOLON, ($position + 1)); |
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$next = $file->findNext(T_WHITESPACE, ($end + 1), NULL, TRUE); |
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$diff = ($tokens[$next]['line'] - $tokens[$end]['line'] - 1); |
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if ($diff !== (int) $this->blankLinesAfterUseStatement) { |
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if ($diff < 0) { |
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$diff = 0; |
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} |
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$error = 'There must be %s blank line(s) after the last USE statement; %s found.'; |
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$data = [$this->blankLinesAfterUseStatement, $diff]; |
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$file->addError($error, $position, 'SpaceAfterLastUse', $data); |
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} |
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1 |
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} |
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} |
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Zenify /
CodingStandard
