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<?php
/**
 * PEAR_Sniffs_Functions_FunctionCallSignatureSniff.
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@squiz.net>
 * @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */

/**
 * PEAR_Sniffs_Functions_FunctionCallSignatureSniff.
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @author    Marc McIntyre <mmcintyre@squiz.net>
 * @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
 * @version   Release: 1.3.3
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */
class PEAR_Sniffs_Functions_FunctionCallSignatureSniff implements PHP_CodeSniffer_Sniff
{


    
/**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array
     */
    
public function register()
    {
        return array(
T_STRING);

    }
//end register()


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

        
// Find the next non-empty token.
        
$openBracket $phpcsFile->findNext(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr 1), nulltrue);

        if (
$tokens[$openBracket]['code'] !== T_OPEN_PARENTHESIS) {
            
// Not a function call.
            
return;
        }

        if (isset(
$tokens[$openBracket]['parenthesis_closer']) === false) {
            
// Not a function call.
            
return;
        }

        
// Find the previous non-empty token.
        
$search   PHP_CodeSniffer_Tokens::$emptyTokens;
        
$search[] = T_BITWISE_AND;
        
$previous $phpcsFile->findPrevious($search, ($stackPtr 1), nulltrue);
        if (
$tokens[$previous]['code'] === T_FUNCTION) {
            
// It's a function definition, not a function call.
            
return;
        }

        
$closeBracket $tokens[$openBracket]['parenthesis_closer'];

        if ((
$stackPtr 1) !== $openBracket) {
            
// Checking this: $value = my_function[*](...).
            
$error 'Space before opening parenthesis of function call prohibited';
            
$phpcsFile->addError($error$stackPtr'SpaceBeforeOpenBracket');
        }

        
$next $phpcsFile->findNext(T_WHITESPACE, ($closeBracket 1), nulltrue);
        if (
$tokens[$next]['code'] === T_SEMICOLON) {
            if (
in_array($tokens[($closeBracket 1)]['code'], PHP_CodeSniffer_Tokens::$emptyTokens) === true) {
                
$error 'Space after closing parenthesis of function call prohibited';
                
$phpcsFile->addError($error$closeBracket'SpaceAfterCloseBracket');
            }
        }

        
// Check if this is a single line or multi-line function call.
        
if ($tokens[$openBracket]['line'] === $tokens[$closeBracket]['line']) {
            
$this->processSingleLineCall($phpcsFile$stackPtr$openBracket$tokens);
        } else {
            
$this->processMultiLineCall($phpcsFile$stackPtr$openBracket$tokens);
        }

    }
//end process()


    /**
     * Processes single-line calls.
     *
     * @param PHP_CodeSniffer_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 openning bracket
     *                                          in the stack passed in $tokens.
     * @param array                $tokens      The stack of tokens that make up
     *                                          the file.
     *
     * @return void
     */
    
public function processSingleLineCall(PHP_CodeSniffer_File $phpcsFile$stackPtr$openBracket$tokens)
    {
        if (
$tokens[($openBracket 1)]['code'] === T_WHITESPACE) {
            
// Checking this: $value = my_function([*]...).
            
$error 'Space after opening parenthesis of function call prohibited';
            
$phpcsFile->addError($error$stackPtr'SpaceAfterOpenBracket');
        }

        
$closer $tokens[$openBracket]['parenthesis_closer'];

        if (
$tokens[($closer 1)]['code'] === T_WHITESPACE) {
            
// Checking this: $value = my_function(...[*]).
            
$between $phpcsFile->findNext(T_WHITESPACE, ($openBracket 1), nulltrue);

            
// Only throw an error if there is some content between the parenthesis.
            // i.e., Checking for this: $value = my_function().
            // If there is no content, then we would have thrown an error in the
            // previous IF statement because it would look like this:
            // $value = my_function( ).
            
if ($between !== $closer) {
                
$error 'Space before closing parenthesis of function call prohibited';
                
$phpcsFile->addError($error$closer'SpaceBeforeCloseBracket');
            }
        }

    }
//end processSingleLineCall()


    /**
     * Processes multi-line calls.
     *
     * @param PHP_CodeSniffer_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 openning bracket
     *                                          in the stack passed in $tokens.
     * @param array                $tokens      The stack of tokens that make up
     *                                          the file.
     *
     * @return void
     */
    
public function processMultiLineCall(PHP_CodeSniffer_File $phpcsFile$stackPtr$openBracket$tokens)
    {
        
// We need to work out how far indented the function
        // call itself is, so we can work out how far to
        // indent the arguments.
        
$functionIndent 0;
        for (
$i = ($stackPtr 1); $i >= 0$i--) {
            if (
$tokens[$i]['line'] !== $tokens[$stackPtr]['line']) {
                
$i++;
                break;
            }
        }

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

        
// Each line between the parenthesis should be indented 4 spaces.
        
$closeBracket $tokens[$openBracket]['parenthesis_closer'];
        
$lastLine     $tokens[$openBracket]['line'];
        for (
$i = ($openBracket 1); $i $closeBracket$i++) {
            
// Skip nested function calls.
            
if ($tokens[$i]['code'] === T_OPEN_PARENTHESIS) {
                
$i        $tokens[$i]['parenthesis_closer'];
                
$lastLine $tokens[$i]['line'];
                continue;
            }

            if (
$tokens[$i]['line'] !== $lastLine) {
                
$lastLine $tokens[$i]['line'];

                
// Ignore heredoc indentation.
                
if (in_array($tokens[$i]['code'], PHP_CodeSniffer_Tokens::$heredocTokens) === true) {
                    continue;
                }

                
// Ignore multi-line string indentation.
                
if (in_array($tokens[$i]['code'], PHP_CodeSniffer_Tokens::$stringTokens) === true) {
                    if (
$tokens[$i]['code'] === $tokens[($i 1)]['code']) {
                        continue;
                    }
                }

                
// We changed lines, so this should be a whitespace indent token, but first make
                // sure it isn't a blank line because we don't need to check indent unless there
                // is actually some code to indent.
                
$nextCode $phpcsFile->findNext(T_WHITESPACE, ($i 1), ($closeBracket 1), true);
                if (
$tokens[$nextCode]['line'] !== $lastLine) {
                    
$error 'Empty lines are not allowed in multi-line function calls';
                    
$phpcsFile->addError($error$i'EmptyLine');
                    continue;
                }

                if (
$nextCode === $closeBracket) {
                    
// Closing brace needs to be indented to the same level
                    // as the function call.
                    
$expectedIndent $functionIndent;
                } else {
                    
$expectedIndent = ($functionIndent 4);
                }

                if (
$tokens[$i]['code'] !== T_WHITESPACE) {
                    
$foundIndent 0;
                } else {
                    
$foundIndent strlen($tokens[$i]['content']);
                }

                if (
$expectedIndent !== $foundIndent) {
                    
$error 'Multi-line function call not indented correctly; expected %s spaces but found %s';
                    
$data  = array(
                              
$expectedIndent,
                              
$foundIndent,
                             );
                    
$phpcsFile->addError($error$i'Indent'$data);
                }
            }
//end if

            // Skip the rest of a closure.
            
if ($tokens[$i]['code'] === T_CLOSURE) {
                
$i        $tokens[$i]['scope_closer'];
                
$lastLine $tokens[$i]['line'];
                continue;
            }
        }
//end for

        
if ($tokens[($openBracket 1)]['content'] !== $phpcsFile->eolChar) {
            
$error 'Opening parenthesis of a multi-line function call must be the last content on the line';
            
$phpcsFile->addError($error$stackPtr'ContentAfterOpenBracket');
        }

        
$prev $phpcsFile->findPrevious(T_WHITESPACE, ($closeBracket 1), nulltrue);
        if (
$tokens[$prev]['line'] === $tokens[$closeBracket]['line']) {
            
$error 'Closing parenthesis of a multi-line function call must be on a line by itself';
            
$phpcsFile->addError($error$closeBracket'CloseBracketLine');
        }

    }
//end processMultiLineCall()


}//end class
?>

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