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<?php
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/**
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 * Squiz_Sniffs_WhiteSpace_ControlStructureSpacingSniff.
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 *
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 * PHP version 5
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 *
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 * @category  PHP
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 * @package   PHP_CodeSniffer
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 * @author    Greg Sherwood <gsherwood@squiz.net>
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 * @author    Marc McIntyre <mmcintyre@squiz.net>
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 * @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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 * @version   CVS: $Id: ControlStructureSpacingSniff.php 274897 2009-01-29 23:39:52Z squiz $
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 * @link      http://pear.php.net/package/PHP_CodeSniffer
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 */
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/**
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 * Squiz_Sniffs_WhiteSpace_ControlStructureSpacingSniff.
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 *
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 * Checks that any array declarations are lower case.
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 *
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 * @category  PHP
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 * @package   PHP_CodeSniffer
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 * @author    Greg Sherwood <gsherwood@squiz.net>
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 * @author    Marc McIntyre <mmcintyre@squiz.net>
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 * @copyright 2006 Squiz Pty Ltd (ABN 77 084 670 600)
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 * @license   http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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 * @version   Release: 1.2.1
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 * @link      http://pear.php.net/package/PHP_CodeSniffer
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 */
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class Squiz_Sniffs_WhiteSpace_ControlStructureSpacingSniff implements PHP_CodeSniffer_Sniff
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{
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    /**
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     * A list of tokenizers this sniff supports.
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     *
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     * @var array
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     */
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    public $supportedTokenizers = array(
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                                   'PHP',
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                                   'JS',
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                                  );
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    /**
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     * Returns an array of tokens this test wants to listen for.
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     *
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     * @return array
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     */
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    public function register()
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    {
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        return array(
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                T_IF,
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                T_WHILE,
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                T_FOREACH,
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                T_FOR,
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                T_SWITCH,
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                T_DO,
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                T_ELSE,
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                T_ELSEIF,
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               );
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    }//end register()
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    /**
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     * Processes this test, when one of its tokens is encountered.
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     *
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     * @param PHP_CodeSniffer_File $phpcsFile The file being scanned.
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     * @param int                  $stackPtr  The position of the current token in the
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     *                                        stack passed in $tokens.
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     *
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     * @return void
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     */
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    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
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    {
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        $tokens = $phpcsFile->getTokens();
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        if (isset($tokens[$stackPtr]['scope_closer']) === false) {
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            return;
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        }
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        $scopeCloser = $tokens[$stackPtr]['scope_closer'];
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        $scopeOpener = $tokens[$stackPtr]['scope_opener'];
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        $firstContent = $phpcsFile->findNext(T_WHITESPACE, ($scopeOpener + 1), null, true);
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        if ($tokens[$firstContent]['line'] !== ($tokens[$scopeOpener]['line'] + 1)) {
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            $error = 'Blank line found at start of control structure';
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            $phpcsFile->addError($error, $scopeOpener);
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        }
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        $lastContent = $phpcsFile->findPrevious(T_WHITESPACE, ($scopeCloser - 1), null, true);
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        if ($tokens[$lastContent]['line'] !== ($tokens[$scopeCloser]['line'] - 1)) {
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            $errorToken = $scopeCloser;
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            for ($i = ($scopeCloser - 1); $i > $lastContent; $i--) {
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                if ($tokens[$i]['line'] < $tokens[$scopeCloser]['line']) {
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                    $errorToken = $i;
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                    break;
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                }
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            }
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            $error = 'Blank line found at end of control structure';
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            $phpcsFile->addError($error, $errorToken);
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        }
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        $trailingContent = $phpcsFile->findNext(T_WHITESPACE, ($scopeCloser + 1), null, true);
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        if ($tokens[$trailingContent]['code'] === T_ELSE) {
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            if ($tokens[$stackPtr]['code'] === T_IF) {
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                // IF with ELSE.
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                return;
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            }
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        }
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        if ($tokens[$trailingContent]['code'] === T_COMMENT) {
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            if ($tokens[$trailingContent]['line'] === $tokens[$scopeCloser]['line']) {
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                if (substr($tokens[$trailingContent]['content'], 0, 5) === '//end') {
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                    // There is an end comment, so we have to get the next piece
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                    // of content.
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                    $trailingContent = $phpcsFile->findNext(T_WHITESPACE, ($trailingContent + 1), null, true);
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                }
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            }
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        }
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        if ($tokens[$trailingContent]['code'] === T_BREAK) {
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            // If this BREAK is closing a CASE, we don't need the
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            // blank line after this control structure.
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            if (isset($tokens[$trailingContent]['scope_condition']) === true) {
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                $condition = $tokens[$trailingContent]['scope_condition'];
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                if ($tokens[$condition]['code'] === T_CASE || $tokens[$condition]['code'] === T_DEFAULT) {
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                    return;
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                }
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            }
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        }
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        if ($tokens[$trailingContent]['code'] === T_CLOSE_TAG) {
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            // At the end of the script or embedded code.
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            return;
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        }
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        if ($tokens[$trailingContent]['code'] === T_CLOSE_CURLY_BRACKET) {
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            // Another control structure's closing brace.
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            if (isset($tokens[$trailingContent]['scope_condition']) === true) {
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                $owner = $tokens[$trailingContent]['scope_condition'];
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                if ($tokens[$owner]['code'] === T_FUNCTION) {
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                    // The next content is the closing brace of a function
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                    // so normal function rules apply and we can ignore it.
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                    return;
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                }
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            }
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            if ($tokens[$trailingContent]['line'] !== ($tokens[$scopeCloser]['line'] + 1)) {
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                $error = 'Blank line found after control structure';
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                $phpcsFile->addError($error, $scopeCloser);
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            }
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        } else {
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            if ($tokens[$trailingContent]['line'] === ($tokens[$scopeCloser]['line'] + 1)) {
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                $error = 'No blank line found after control structure';
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                $phpcsFile->addError($error, $scopeCloser);
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            }
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        }
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    }//end process()
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}//end class
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?>