File: //usr/local/wp/vendor/phpcsstandards/phpcsextra/Universal/Sniffs/WhiteSpace/CommaSpacingSniff.php
<?php
/**
* PHPCSExtra, a collection of sniffs and standards for use with PHP_CodeSniffer.
*
* @package PHPCSExtra
* @copyright 2020 PHPCSExtra Contributors
* @license https://opensource.org/licenses/LGPL-3.0 LGPL3
* @link https://github.com/PHPCSStandards/PHPCSExtra
*/
namespace PHPCSExtra\Universal\Sniffs\WhiteSpace;
use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Util\Tokens;
use PHPCSUtils\BackCompat\Helper;
use PHPCSUtils\Fixers\SpacesFixer;
use PHPCSUtils\Tokens\Collections;
use PHPCSUtils\Utils\Parentheses;
/**
* Check spacing around commas.
*
* - Demands there is no whitespace between the preceeding code and the comma.
* - Demands exactly one space or a new line after a comma.
* - Demands that when there is a trailing comment, the comma follows the code, not the comment.
*
* The following exclusions are in place:
* - A comma preceded or followed by a parenthesis, curly or square bracket.
* These will not be flagged to prevent conflicts with sniffs handling spacing around braces.
* - A comma preceded or followed by another comma, like for skipping items in a list assignment.
* These will not be flagged.
* - A comma preceded by a non-indented heredoc/nowdoc closer.
* In that case, unless the `php_version` config directive is set to a version higher than PHP 7.3.0,
* a new line before will be enforced to prevent parse errors on PHP < 7.3.
*
* The sniff has a separate error code for when a comma is found with more than one space after it, followed
* by a trailing comment. That way trailing comment alignment can be allowed by excluding that error code.
*
* The sniff uses modular error code suffixes for select situations, like `*InFunctionDeclaration`,
* `*InFunctionCall`, to allow for preventing duplicate messages if another sniff is already
* handling the comma spacing.
*
* @since 1.1.0
*/
final class CommaSpacingSniff implements Sniff
{
/**
* Name of the "Spacing before" metric.
*
* @since 1.1.0
*
* @var string
*/
const METRIC_NAME_BEFORE = 'Spaces found before comma';
/**
* Name of the "Spacing after" metric.
*
* @since 1.1.0
*
* @var string
*/
const METRIC_NAME_AFTER = 'Spaces found after comma';
/**
* PHP version as configured or 0 if unknown.
*
* @since 1.1.0
*
* @var int
*/
private $phpVersion;
/**
* Returns an array of tokens this test wants to listen for.
*
* @since 1.1.0
*
* @return array<int|string>
*/
public function register()
{
return [\T_COMMA];
}
/**
* Processes this test, when one of its tokens is encountered.
*
* @since 1.1.0
*
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
public function process(File $phpcsFile, $stackPtr)
{
if (isset($this->phpVersion) === false || \defined('PHP_CODESNIFFER_IN_TESTS')) {
// Set default value to prevent this code from running every time the sniff is triggered.
$this->phpVersion = 0;
$phpVersion = Helper::getConfigData('php_version');
if ($phpVersion !== null) {
$this->phpVersion = (int) $phpVersion;
}
}
$this->processSpacingBefore($phpcsFile, $stackPtr);
$this->processSpacingAfter($phpcsFile, $stackPtr);
}
/**
* Check the spacing before the comma.
*
* @since 1.1.0
*
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
protected function processSpacingBefore(File $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
$prevNonWhitespace = $phpcsFile->findPrevious(\T_WHITESPACE, ($stackPtr - 1), null, true);
$prevNonEmpty = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($stackPtr - 1), null, true);
$nextNonEmpty = $phpcsFile->findNext(Tokens::$emptyTokens, ($stackPtr + 1), null, true);
if ($prevNonWhitespace !== $prevNonEmpty
&& $tokens[$prevNonEmpty]['code'] !== \T_COMMA
&& $tokens[$prevNonEmpty]['line'] !== $tokens[$nextNonEmpty]['line']
) {
// Special case: comma after a trailing comment - the comma should be moved to before the comment.
$fix = $phpcsFile->addFixableError(
'Comma found after comment, expected the comma after the end of the code',
$stackPtr,
'CommaAfterComment'
);
if ($fix === true) {
$phpcsFile->fixer->beginChangeset();
$phpcsFile->fixer->replaceToken($stackPtr, '');
$phpcsFile->fixer->addContent($prevNonEmpty, ',');
// Clean up potential trailing whitespace left behind, but don't remove blank lines.
$nextNonWhitespace = $phpcsFile->findNext(\T_WHITESPACE, ($stackPtr + 1), null, true);
if ($tokens[($stackPtr - 1)]['code'] === \T_WHITESPACE
&& $tokens[($stackPtr - 1)]['line'] === $tokens[$stackPtr]['line']
&& $tokens[$stackPtr]['line'] !== $tokens[$nextNonWhitespace]['line']
) {
$phpcsFile->fixer->replaceToken(($stackPtr - 1), '');
}
$phpcsFile->fixer->endChangeset();
}
return;
}
if ($tokens[$prevNonWhitespace]['code'] === \T_COMMA) {
// This must be a list assignment with ignored items. Ignore.
return;
}
if (isset(Tokens::$blockOpeners[$tokens[$prevNonWhitespace]['code']]) === true
|| $tokens[$prevNonWhitespace]['code'] === \T_OPEN_SHORT_ARRAY
|| $tokens[$prevNonWhitespace]['code'] === \T_OPEN_USE_GROUP
) {
// Should only realistically be possible for lists. Leave for a block brace spacing sniff to sort out.
return;
}
$expectedSpaces = 0;
if ($tokens[$prevNonEmpty]['code'] === \T_END_HEREDOC
|| $tokens[$prevNonEmpty]['code'] === \T_END_NOWDOC
) {
/*
* If php_version is explicitly set to PHP < 7.3, enforce a new line between the closer and the comma.
*
* If php_version is *not* explicitly set, let the indent be leading and only enforce
* a new line between the closer and the comma when this is an old-style heredoc/nowdoc.
*/
if ($this->phpVersion !== 0 && $this->phpVersion < 70300) {
$expectedSpaces = 'newline';
}
if ($this->phpVersion === 0
&& \ltrim($tokens[$prevNonEmpty]['content']) === $tokens[$prevNonEmpty]['content']
) {
$expectedSpaces = 'newline';
}
}
$error = 'Expected %1$s between "' . $this->escapePlaceholders($tokens[$prevNonWhitespace]['content'])
. '" and the comma. Found: %2$s';
$codeSuffix = $this->getSuffix($phpcsFile, $stackPtr);
$metricSuffix = $this->codeSuffixToMetric($codeSuffix);
SpacesFixer::checkAndFix(
$phpcsFile,
$stackPtr,
$prevNonWhitespace,
$expectedSpaces,
$error,
'SpaceBefore' . $codeSuffix,
'error',
0,
self::METRIC_NAME_BEFORE . $metricSuffix
);
}
/**
* Check the spacing after the comma.
*
* @since 1.1.0
*
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
protected function processSpacingAfter(File $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
$nextNonWhitespace = $phpcsFile->findNext(\T_WHITESPACE, ($stackPtr + 1), null, true);
if ($nextNonWhitespace === false) {
// Live coding/parse error. Ignore.
return;
}
if ($tokens[$nextNonWhitespace]['code'] === \T_COMMA) {
// This must be a list assignment with ignored items. Ignore.
return;
}
if ($tokens[$nextNonWhitespace]['code'] === \T_CLOSE_CURLY_BRACKET
|| $tokens[$nextNonWhitespace]['code'] === \T_CLOSE_SQUARE_BRACKET
|| $tokens[$nextNonWhitespace]['code'] === \T_CLOSE_PARENTHESIS
|| $tokens[$nextNonWhitespace]['code'] === \T_CLOSE_SHORT_ARRAY
|| $tokens[$nextNonWhitespace]['code'] === \T_CLOSE_USE_GROUP
) {
// Ignore. Leave for a block spacing sniff to sort out.
return;
}
$nextToken = $tokens[($stackPtr + 1)];
$error = 'Expected %1$s between the comma and "'
. $this->escapePlaceholders($tokens[$nextNonWhitespace]['content']) . '". Found: %2$s';
$codeSuffix = $this->getSuffix($phpcsFile, $stackPtr);
$metricSuffix = $this->codeSuffixToMetric($codeSuffix);
if ($nextToken['code'] === \T_WHITESPACE) {
if ($nextToken['content'] === ' ') {
$phpcsFile->recordMetric($stackPtr, self::METRIC_NAME_AFTER . $metricSuffix, '1 space');
return;
}
// Note: this check allows for trailing whitespace between the comma and a new line char.
// The trailing whitespace is not the concern of this sniff.
if (\ltrim($nextToken['content'], ' ') === $phpcsFile->eolChar) {
$phpcsFile->recordMetric($stackPtr, self::METRIC_NAME_AFTER . $metricSuffix, 'a new line');
return;
}
$errorCode = 'TooMuchSpaceAfter' . $codeSuffix;
$nextNonEmpty = $phpcsFile->findNext(Tokens::$emptyTokens, ($stackPtr + 1), null, true);
if (isset(Tokens::$commentTokens[$tokens[$nextNonWhitespace]['code']]) === true
&& ($nextNonEmpty === false || $tokens[$stackPtr]['line'] !== $tokens[$nextNonEmpty]['line'])
) {
// Separate error code to allow for aligning trailing comments.
$errorCode = 'TooMuchSpaceAfterCommaBeforeTrailingComment';
}
SpacesFixer::checkAndFix(
$phpcsFile,
$stackPtr,
$nextNonWhitespace,
1,
$error,
$errorCode,
'error',
0,
self::METRIC_NAME_AFTER . $metricSuffix
);
return;
}
SpacesFixer::checkAndFix(
$phpcsFile,
$stackPtr,
$nextNonWhitespace,
1,
$error,
'NoSpaceAfter' . $codeSuffix,
'error',
0,
self::METRIC_NAME_AFTER . $metricSuffix
);
}
/**
* Escape arbitrary token content for *printf() placeholders.
*
* @since 1.1.0
*
* @param string $text Arbitrary text string.
*
* @return string
*/
private function escapePlaceholders($text)
{
return \preg_replace('`(?:^|[^%])(%)(?:[^%]|$)`', '%%', \trim($text));
}
/**
* Retrieve a text string for use as a suffix to an error code.
*
* This allows for modular error codes, which in turn allow for selectively excluding
* error codes.
*
* {@internal Closure use will be parentheses owner in PHPCS 4.x, this code will
* need an update for that in due time.}
*
* @since 1.1.0
*
* @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return string
*/
private function getSuffix($phpcsFile, $stackPtr)
{
$opener = Parentheses::getLastOpener($phpcsFile, $stackPtr);
if ($opener === false) {
return '';
}
$tokens = $phpcsFile->getTokens();
$owner = Parentheses::getOwner($phpcsFile, $opener);
if ($owner !== false) {
switch ($tokens[$owner]['code']) {
case \T_FUNCTION:
case \T_CLOSURE:
case \T_FN:
return 'InFunctionDeclaration';
case \T_USE:
return 'InClosureUse';
case \T_DECLARE:
return 'InDeclare';
case \T_ANON_CLASS:
case \T_ISSET:
case \T_UNSET:
return 'InFunctionCall';
// Long array, long list, empty, exit, eval, control structures.
default:
return '';
}
}
$prevNonEmpty = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($opener - 1), null, true);
if (isset(Collections::nameTokens()[$tokens[$prevNonEmpty]['code']]) === true) {
return 'InFunctionCall';
}
switch ($tokens[$prevNonEmpty]['code']) {
case \T_VARIABLE:
case \T_SELF:
case \T_STATIC:
case \T_PARENT:
return 'InFunctionCall';
default:
return '';
}
}
/**
* Transform a suffix for an error code into a suffix for a metric.
*
* @since 1.1.0
*
* @param string $suffix Error code suffix.
*
* @return string
*/
private function codeSuffixToMetric($suffix)
{
return \strtolower(\preg_replace('`([A-Z])`', ' $1', $suffix));
}
}