<?php
/**
 * PHP Version 5
 *
 * FHComplete
 */

/**
 * Ensures no whitespaces and one whitespace is placed around each comma
 *
 */
class FHComplete_Sniffs_WhiteSpace_CommaSpacingSniff implements PHP_CodeSniffer_Sniff
{

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

/**
 * Processes this test, when one of its tokens is encountered.
 *
 * @param PHP_CodeSniffer_File $phpcsFile All the tokens found in the document.
 * @param integer $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();

        $next = $phpcsFile->findNext(T_WHITESPACE, ($stackPtr + 1), null, true);

        if ($tokens[$next]['code'] !== T_WHITESPACE && ($next !== $stackPtr + 2)) {
            // Last character in a line is ok.
            if ($tokens[$next]['line'] === $tokens[$stackPtr]['line']) {
                $error = 'Missing space after comma';
                $phpcsFile->addError($error, $next);
            }
        }

        $previous = $phpcsFile->findPrevious(T_WHITESPACE, ($stackPtr - 1), null, true);

        if ($tokens[$previous]['code'] !== T_WHITESPACE && ($previous !== $stackPtr - 1)) {
            $error = 'Space before comma, expected none, though';
            $phpcsFile->addError($error, $next);
        }
    }
}