src/Tokenizer/Parser/Reserved.php
protected static function isReservedPrecededByDotCharacter($previous)
    {
        return !$previous || !isset($previous[Tokenizer::TOKEN_VALUE]) || $previous[Tokenizer::TOKEN_VALUE] !== '.';
    }
protected static function isReservedPrecededByDotCharacter($previous)
    {
        return !$previous || !isset($previous[Tokenizer::TOKEN_VALUE]) || $previous[Tokenizer::TOKEN_VALUE] !== '.';
    }
protected static function isReservedPrecededByDotCharacter ( $ previous ) { return ! $ previous || ! isset ( $ previous [ Tokenizer :: TOKEN_VALUE ] ) || $ previous [ Tokenizer :: TOKEN_VALUE ] !== '.' ; }
A reserved word cannot be preceded by a "." in order to differentiate "mytable.from" from the token "from".

@param $previous

@return bool
A reserved word cannot be preceded by a . in order to differentiate mytable . from from the token from .