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opt / cpanel / ea-wappspector / vendor / squizlabs / php_codesniffer / src / Standards / PEAR / Sniffs / Functions /

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Editing: FunctionDeclarationSniff.php

<?php
/**
 * Ensure single and multi-line function declarations are defined correctly.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Standards\PEAR\Sniffs\Functions;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
use PHP_CodeSniffer\Standards\Generic\Sniffs\Functions\OpeningFunctionBraceBsdAllmanSniff;
use PHP_CodeSniffer\Standards\Generic\Sniffs\Functions\OpeningFunctionBraceKernighanRitchieSniff;
use PHP_CodeSniffer\Util\Tokens;

class FunctionDeclarationSniff implements Sniff
{

/**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = [
        'PHP',
        'JS',
    ];

/**
     * The number of spaces code should be indented.
     *
     * @var integer
     */
    public $indent = 4;

/**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [
            T_FUNCTION,
            T_CLOSURE,
        ];

}//end register()

/**
     * Processes this test, when one of its tokens is encountered.
     *
     * @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)
    {
        $tokens = $phpcsFile->getTokens();

if (isset($tokens[$stackPtr]['parenthesis_opener']) === false
            || isset($tokens[$stackPtr]['parenthesis_closer']) === false
        ) {
            return;
        }

$openBracket  = $tokens[$stackPtr]['parenthesis_opener'];
        $closeBracket = $tokens[$stackPtr]['parenthesis_closer'];

if (strtolower($tokens[$stackPtr]['content']) === 'function') {
            // Must be one space after the FUNCTION keyword.
            if ($tokens[($stackPtr + 1)]['content'] === $phpcsFile->eolChar) {
                $spaces = 'newline';
            } else if ($tokens[($stackPtr + 1)]['code'] === T_WHITESPACE) {
                $spaces = $tokens[($stackPtr + 1)]['length'];
            } else {
                $spaces = 0;
            }

if ($spaces !== 1) {
                $error = 'Expected 1 space after FUNCTION keyword; %s found';
                $data  = [$spaces];
                $fix   = $phpcsFile->addFixableError($error, $stackPtr, 'SpaceAfterFunction', $data);
                if ($fix === true) {
                    if ($spaces === 0) {
                        $phpcsFile->fixer->addContent($stackPtr, ' ');
                    } else {
                        $phpcsFile->fixer->replaceToken(($stackPtr + 1), ' ');
                    }
                }
            }
        }//end if

// Must be no space before the opening parenthesis. For closures, this is
        // enforced by the previous check because there is no content between the keywords
        // and the opening parenthesis.
        // Unfinished closures are tokenized as T_FUNCTION however, and can be excluded
        // by checking if the function has a name.
        $methodProps = $phpcsFile->getMethodProperties($stackPtr);
        $methodName  = $phpcsFile->getDeclarationName($stackPtr);
        if ($tokens[$stackPtr]['code'] === T_FUNCTION && $methodName !== null) {
            if ($tokens[($openBracket - 1)]['content'] === $phpcsFile->eolChar) {
                $spaces = 'newline';
            } else if ($tokens[($openBracket - 1)]['code'] === T_WHITESPACE) {
                $spaces = $tokens[($openBracket - 1)]['length'];
            } else {
                $spaces = 0;
            }

if ($spaces !== 0) {
                $error = 'Expected 0 spaces before opening parenthesis; %s found';
                $data  = [$spaces];
                $fix   = $phpcsFile->addFixableError($error, $openBracket, 'SpaceBeforeOpenParen', $data);
                if ($fix === true) {
                    $phpcsFile->fixer->replaceToken(($openBracket - 1), '');
                }
            }

// Must be no space before semicolon in abstract/interface methods.
            if ($methodProps['has_body'] === false) {
                $end = $phpcsFile->findNext(T_SEMICOLON, $closeBracket);
                if ($end !== false) {
                    if ($tokens[($end - 1)]['content'] === $phpcsFile->eolChar) {
                        $spaces = 'newline';
                    } else if ($tokens[($end - 1)]['code'] === T_WHITESPACE) {
                        $spaces = $tokens[($end - 1)]['length'];
                    } else {
                        $spaces = 0;
                    }

if ($spaces !== 0) {
                        $error = 'Expected 0 spaces before semicolon; %s found';
                        $data  = [$spaces];
                        $fix   = $phpcsFile->addFixableError($error, $end, 'SpaceBeforeSemicolon', $data);
                        if ($fix === true) {
                            $phpcsFile->fixer->replaceToken(($end - 1), '');
                        }
                    }
                }
            }//end if
        }//end if

// Must be one space before and after USE keyword for closures.
        if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
            $use = $phpcsFile->findNext(T_USE, ($closeBracket + 1), $tokens[$stackPtr]['scope_opener']);
            if ($use !== false) {
                if ($tokens[($use + 1)]['code'] !== T_WHITESPACE) {
                    $length = 0;
                } else if ($tokens[($use + 1)]['content'] === "\t") {
                    $length = '\t';
                } else {
                    $length = $tokens[($use + 1)]['length'];
                }

if ($length !== 1) {
                    $error = 'Expected 1 space after USE keyword; found %s';
                    $data  = [$length];
                    $fix   = $phpcsFile->addFixableError($error, $use, 'SpaceAfterUse', $data);
                    if ($fix === true) {
                        if ($length === 0) {
                            $phpcsFile->fixer->addContent($use, ' ');
                        } else {
                            $phpcsFile->fixer->replaceToken(($use + 1), ' ');
                        }
                    }
                }

if ($tokens[($use - 1)]['code'] !== T_WHITESPACE) {
                    $length = 0;
                } else if ($tokens[($use - 1)]['content'] === "\t") {
                    $length = '\t';
                } else {
                    $length = $tokens[($use - 1)]['length'];
                }

if ($length !== 1) {
                    $error = 'Expected 1 space before USE keyword; found %s';
                    $data  = [$length];
                    $fix   = $phpcsFile->addFixableError($error, $use, 'SpaceBeforeUse', $data);
                    if ($fix === true) {
                        if ($length === 0) {
                            $phpcsFile->fixer->addContentBefore($use, ' ');
                        } else {
                            $phpcsFile->fixer->replaceToken(($use - 1), ' ');
                        }
                    }
                }
            }//end if
        }//end if

if ($this->isMultiLineDeclaration($phpcsFile, $stackPtr, $openBracket, $tokens) === true) {
            $this->processMultiLineDeclaration($phpcsFile, $stackPtr, $tokens);
        } else {
            $this->processSingleLineDeclaration($phpcsFile, $stackPtr, $tokens);
        }

}//end process()

/**
     * Determine if this is a multi-line function declaration.
     *
     * @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.
     * @param int                         $openBracket The position of the opening bracket
     *                                                 in the stack passed in $tokens.
     * @param array                       $tokens      The stack of tokens that make up
     *                                                 the file.
     *
     * @return bool
     */
    public function isMultiLineDeclaration($phpcsFile, $stackPtr, $openBracket, $tokens)
    {
        $closeBracket = $tokens[$openBracket]['parenthesis_closer'];
        if ($tokens[$openBracket]['line'] !== $tokens[$closeBracket]['line']) {
            return true;
        }

// Closures may use the USE keyword and so be multi-line in this way.
        if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
            $use = $phpcsFile->findNext(T_USE, ($closeBracket + 1), $tokens[$stackPtr]['scope_opener']);
            if ($use !== false) {
                // If the opening and closing parenthesis of the use statement
                // are also on the same line, this is a single line declaration.
                $open  = $phpcsFile->findNext(T_OPEN_PARENTHESIS, ($use + 1));
                $close = $tokens[$open]['parenthesis_closer'];
                if ($tokens[$open]['line'] !== $tokens[$close]['line']) {
                    return true;
                }
            }
        }

return false;

}//end isMultiLineDeclaration()

/**
     * Processes single-line declarations.
     *
     * Just uses the Generic BSD-Allman brace sniff.
     *
     * @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.
     * @param array                       $tokens    The stack of tokens that make up
     *                                               the file.
     *
     * @return void
     */
    public function processSingleLineDeclaration($phpcsFile, $stackPtr, $tokens)
    {
        if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
            $sniff = new OpeningFunctionBraceKernighanRitchieSniff();
        } else {
            $sniff = new OpeningFunctionBraceBsdAllmanSniff();
        }

$sniff->checkClosures = true;
        $sniff->process($phpcsFile, $stackPtr);

}//end processSingleLineDeclaration()

/**
     * Processes multi-line declarations.
     *
     * @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.
     * @param array                       $tokens    The stack of tokens that make up
     *                                               the file.
     *
     * @return void
     */
    public function processMultiLineDeclaration($phpcsFile, $stackPtr, $tokens)
    {
        $this->processArgumentList($phpcsFile, $stackPtr, $this->indent);

$closeBracket = $tokens[$stackPtr]['parenthesis_closer'];
        if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
            $use = $phpcsFile->findNext(T_USE, ($closeBracket + 1), $tokens[$stackPtr]['scope_opener']);
            if ($use !== false) {
                $open         = $phpcsFile->findNext(T_OPEN_PARENTHESIS, ($use + 1));
                $closeBracket = $tokens[$open]['parenthesis_closer'];
            }
        }

if (isset($tokens[$stackPtr]['scope_opener']) === false) {
            return;
        }

// The opening brace needs to be on the same line as the closing parenthesis.
        // There should only be one space between the closing parenthesis - or the end of the
        // return type - and the opening brace.
        $opener = $tokens[$stackPtr]['scope_opener'];
        if ($tokens[$opener]['line'] !== $tokens[$closeBracket]['line']) {
            $error = 'The closing parenthesis and the opening brace of a multi-line function declaration must be on the same line';
            $code  = 'NewlineBeforeOpenBrace';

$prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($opener - 1), $closeBracket, true);
            if ($tokens[$prev]['line'] === $tokens[$opener]['line']) {
                // End of the return type is not on the same line as the close parenthesis.
                $phpcsFile->addError($error, $opener, $code);
            } else {
                $fix = $phpcsFile->addFixableError($error, $opener, $code);
                if ($fix === true) {
                    $phpcsFile->fixer->beginChangeset();
                    $phpcsFile->fixer->addContent($prev, ' {');

// If the opener is on a line by itself, removing it will create
                    // an empty line, so remove the entire line instead.
                    $prev = $phpcsFile->findPrevious(T_WHITESPACE, ($opener - 1), $closeBracket, true);
                    $next = $phpcsFile->findNext(T_WHITESPACE, ($opener + 1), null, true);

if ($tokens[$prev]['line'] < $tokens[$opener]['line']
                        && $tokens[$next]['line'] > $tokens[$opener]['line']
                    ) {
                        // Clear the whole line.
                        for ($i = ($prev + 1); $i < $next; $i++) {
                            if ($tokens[$i]['line'] === $tokens[$opener]['line']) {
                                $phpcsFile->fixer->replaceToken($i, '');
                            }
                        }
                    } else {
                        // Just remove the opener.
                        $phpcsFile->fixer->replaceToken($opener, '');
                        if ($tokens[$next]['line'] === $tokens[$opener]['line']
                            && ($opener + 1) !== $next
                        ) {
                            $phpcsFile->fixer->replaceToken(($opener + 1), '');
                        }
                    }

$phpcsFile->fixer->endChangeset();
                }//end if

return;
            }//end if
        }//end if

$prev = $tokens[($opener - 1)];
        if ($prev['code'] !== T_WHITESPACE) {
            $length = 0;
        } else {
            $length = strlen($prev['content']);
        }

if ($length !== 1) {
            $error = 'There must be a single space between the closing parenthesis/return type and the opening brace of a multi-line function declaration; found %s spaces';
            $fix   = $phpcsFile->addFixableError($error, ($opener - 1), 'SpaceBeforeOpenBrace', [$length]);
            if ($fix === true) {
                if ($length === 0) {
                    $phpcsFile->fixer->addContentBefore($opener, ' ');
                } else {
                    $phpcsFile->fixer->replaceToken(($opener - 1), ' ');
                }
            }
        }

}//end processMultiLineDeclaration()

/**
     * Processes multi-line argument list declarations.
     *
     * @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.
     * @param int                         $indent    The number of spaces code should be indented.
     * @param string                      $type      The type of the token the brackets
     *                                               belong to.
     *
     * @return void
     */
    public function processArgumentList($phpcsFile, $stackPtr, $indent, $type='function')
    {
        $tokens = $phpcsFile->getTokens();

// We need to work out how far indented the function
        // declaration itself is, so we can work out how far to
        // indent parameters.
        $functionIndent = 0;
        for ($i = ($stackPtr - 1); $i >= 0; $i--) {
            if ($tokens[$i]['line'] !== $tokens[$stackPtr]['line']) {
                break;
            }
        }

// Move $i back to the line the function is or to 0.
        $i++;

if ($tokens[$i]['code'] === T_WHITESPACE) {
            $functionIndent = $tokens[$i]['length'];
        }

// The closing parenthesis must be on a new line, even
        // when checking abstract function definitions.
        $closeBracket = $tokens[$stackPtr]['parenthesis_closer'];
        $prev         = $phpcsFile->findPrevious(
            T_WHITESPACE,
            ($closeBracket - 1),
            null,
            true
        );

if ($tokens[$closeBracket]['line'] !== $tokens[$tokens[$closeBracket]['parenthesis_opener']]['line']
            && $tokens[$prev]['line'] === $tokens[$closeBracket]['line']
        ) {
            $error = 'The closing parenthesis of a multi-line '.$type.' declaration must be on a new line';
            $fix   = $phpcsFile->addFixableError($error, $closeBracket, 'CloseBracketLine');
            if ($fix === true) {
                $phpcsFile->fixer->addNewlineBefore($closeBracket);
            }
        }

// If this is a closure and is using a USE statement, the closing
        // parenthesis we need to look at from now on is the closing parenthesis
        // of the USE statement.
        if ($tokens[$stackPtr]['code'] === T_CLOSURE) {
            $use = $phpcsFile->findNext(T_USE, ($closeBracket + 1), $tokens[$stackPtr]['scope_opener']);
            if ($use !== false) {
                $open         = $phpcsFile->findNext(T_OPEN_PARENTHESIS, ($use + 1));
                $closeBracket = $tokens[$open]['parenthesis_closer'];

$prev = $phpcsFile->findPrevious(
                    T_WHITESPACE,
                    ($closeBracket - 1),
                    null,
                    true
                );

if ($tokens[$closeBracket]['line'] !== $tokens[$tokens[$closeBracket]['parenthesis_opener']]['line']
                    && $tokens[$prev]['line'] === $tokens[$closeBracket]['line']
                ) {
                    $error = 'The closing parenthesis of a multi-line use declaration must be on a new line';
                    $fix   = $phpcsFile->addFixableError($error, $closeBracket, 'UseCloseBracketLine');
                    if ($fix === true) {
                        $phpcsFile->fixer->addNewlineBefore($closeBracket);
                    }
                }
            }//end if
        }//end if

// Each line between the parenthesis should be indented 4 spaces.
        $openBracket = $tokens[$stackPtr]['parenthesis_opener'];
        $lastLine    = $tokens[$openBracket]['line'];
        for ($i = ($openBracket + 1); $i < $closeBracket; $i++) {
            if ($tokens[$i]['line'] !== $lastLine) {
                if ($i === $tokens[$stackPtr]['parenthesis_closer']
                    || ($tokens[$i]['code'] === T_WHITESPACE
                    && (($i + 1) === $closeBracket
                    || ($i + 1) === $tokens[$stackPtr]['parenthesis_closer']))
                ) {
                    // Closing braces need to be indented to the same level
                    // as the function.
                    $expectedIndent = $functionIndent;
                } else {
                    $expectedIndent = ($functionIndent + $indent);
                }

// We changed lines, so this should be a whitespace indent token.
                $foundIndent = 0;
                if ($tokens[$i]['code'] === T_WHITESPACE
                    && $tokens[$i]['line'] !== $tokens[($i + 1)]['line']
                ) {
                    $error = 'Blank lines are not allowed in a multi-line '.$type.' declaration';
                    $fix   = $phpcsFile->addFixableError($error, $i, 'EmptyLine');
                    if ($fix === true) {
                        $phpcsFile->fixer->replaceToken($i, '');
                    }

// This is an empty line, so don't check the indent.
                    continue;
                } else if ($tokens[$i]['code'] === T_WHITESPACE) {
                    $foundIndent = $tokens[$i]['length'];
                } else if ($tokens[$i]['code'] === T_DOC_COMMENT_WHITESPACE) {
                    $foundIndent = $tokens[$i]['length'];
                    ++$expectedIndent;
                }

if ($expectedIndent !== $foundIndent) {
                    $error = 'Multi-line '.$type.' declaration not indented correctly; expected %s spaces but found %s';
                    $data  = [
                        $expectedIndent,
                        $foundIndent,
                    ];

$fix = $phpcsFile->addFixableError($error, $i, 'Indent', $data);
                    if ($fix === true) {
                        $spaces = str_repeat(' ', $expectedIndent);
                        if ($foundIndent === 0) {
                            $phpcsFile->fixer->addContentBefore($i, $spaces);
                        } else {
                            $phpcsFile->fixer->replaceToken($i, $spaces);
                        }
                    }
                }

$lastLine = $tokens[$i]['line'];
            }//end if

if ($tokens[$i]['code'] === T_OPEN_PARENTHESIS
                && isset($tokens[$i]['parenthesis_closer']) === true
            ) {
                $prevNonEmpty = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($i - 1), null, true);
                if ($tokens[$prevNonEmpty]['code'] !== T_USE) {
                    // Since PHP 8.1, a default value can contain a class instantiation.
                    // Skip over these "function calls" as they have their own indentation rules.
                    $i        = $tokens[$i]['parenthesis_closer'];
                    $lastLine = $tokens[$i]['line'];
                    continue;
                }
            }

if ($tokens[$i]['code'] === T_ARRAY || $tokens[$i]['code'] === T_OPEN_SHORT_ARRAY) {
                // Skip arrays as they have their own indentation rules.
                if ($tokens[$i]['code'] === T_OPEN_SHORT_ARRAY) {
                    $i = $tokens[$i]['bracket_closer'];
                } else {
                    $i = $tokens[$i]['parenthesis_closer'];
                }

$lastLine = $tokens[$i]['line'];
                continue;
            }

if ($tokens[$i]['code'] === T_ATTRIBUTE) {
                // Skip attributes as they have their own indentation rules.
                $i        = $tokens[$i]['attribute_closer'];
                $lastLine = $tokens[$i]['line'];
                continue;
            }
        }//end for

}//end processArgumentList()

}//end class

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