<?php
/**
 * Verifies that properties are declared correctly.
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */
namespace PSR2Stock\Sniffs\Classes;

use \PHP_CodeSniffer\Sniffs\AbstractVariableSniff;
use \PHP_CodeSniffer\Files\File;
use \PHP_CodeSniffer\Util\Tokens;


/**
 * Verifies that properties are declared correctly.
 *
 * @category  PHP
 * @package   PHP_CodeSniffer
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2014 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 * @version   Release: 2.3.4
 * @link      http://pear.php.net/package/PHP_CodeSniffer
 */
class PropertyDeclarationSniff extends AbstractVariableSniff
{


    /**
     * Processes the function tokens within the class.
     *
     * @param File $phpcsFile The file where this token was found.
     * @param int  $stackPtr  The position where the token was found.
     *
     * @return void
     */
    protected function processMemberVar(File $phpcsFile, $stackPtr)
    {
        $tokens = $phpcsFile->getTokens();

        // Detect multiple properties defined at the same time. Throw an error
        // for this, but also only process the first property in the list so we don't
        // repeat errors.
        $find = Tokens::$scopeModifiers;
        $find = array_merge($find, array(T_VARIABLE, T_VAR, T_SEMICOLON));
        $prev = $phpcsFile->findPrevious($find, ($stackPtr - 1));
        if ($tokens[$prev]['code'] === T_VARIABLE) {
            return;
        }

        if ($tokens[$prev]['code'] === T_VAR) {
            $error = 'The var keyword must not be used to declare a property';
            $phpcsFile->addError($error, $stackPtr, 'VarUsed');
        }

        $next = $phpcsFile->findNext(array(T_VARIABLE, T_SEMICOLON), ($stackPtr + 1));
        if ($tokens[$next]['code'] === T_VARIABLE) {
            $error = 'There must not be more than one property declared per statement';
            $phpcsFile->addError($error, $stackPtr, 'Multiple');
        }

        $modifier = $phpcsFile->findPrevious(Tokens::$scopeModifiers, $stackPtr);
        if (($modifier === false) || ($tokens[$modifier]['line'] !== $tokens[$stackPtr]['line'])) {
            $error = 'Visibility must be declared on property "%s"';
            $data  = array($tokens[$stackPtr]['content']);
            $phpcsFile->addError($error, $stackPtr, 'ScopeMissing', $data);
        }

        if ($modifier) {
            if ($tokens[$modifier]['content'] == 'public') {
                $underscore_prefix = false;
            } else {
                $underscore_prefix = true;
            }

            $first_char = substr($tokens[$stackPtr]['content'], 1, 1);
            if ($first_char == '_' && !$underscore_prefix) {
                $error = 'A public property name cannot start with "_"';
                $phpcsFile->addError($error, $stackPtr, 'VarNaming');
            } else if ($first_char != '_' && $underscore_prefix) {
                $error = 'A non public property name must start with "_"';
                $phpcsFile->addError($error, $stackPtr, 'VarNaming');
            }
        }

    }//end processMemberVar()


    /**
     * Processes normal variables.
     *
     * @param File $phpcsFile The file where this token was found.
     * @param int  $stackPtr  The position where the token was found.
     *
     * @return void
     */
    protected function processVariable(File $phpcsFile, $stackPtr)
    {
        /*
            We don't care about normal variables.
        */

    }//end processVariable()


    /**
     * Processes variables in double quoted strings.
     *
     * @param File $phpcsFile The file where this token was found.
     * @param int  $stackPtr  The position where the token was found.
     *
     * @return void
     */
    protected function processVariableInString(File $phpcsFile, $stackPtr)
    {
        /*
            We don't care about normal variables.
        */

    }//end processVariableInString()


}//end class