private function assertTokenStruct($tokenStruct)
    {
        if (! is_array($tokenStruct)) {
            throw new Exception\InvalidTokenException('Invalid token struct; must be an array');
        }

        if (2 > count($tokenStruct)) {
            throw new Exception\InvalidTokenException('Invalid token struct; missing data');
        }

        if (! isset($tokenStruct[0]) || ! isset($tokenStruct[1])) {
            throw new Exception\InvalidTokenException('Invalid token struct; missing either index 0 or 1');
        }

        if (! in_array($tokenStruct[0], $this->validTokens, true)) {
            throw new Exception\InvalidTokenException('Invalid token struct; invalid token at position 0');
        }
    }
private function assertTokenStruct($tokenStruct)
    {
        if (! is_array($tokenStruct)) {
            throw new Exception\InvalidTokenException('Invalid token struct; must be an array');
        }

        if (2 > count($tokenStruct)) {
            throw new Exception\InvalidTokenException('Invalid token struct; missing data');
        }

        if (! isset($tokenStruct[0]) || ! isset($tokenStruct[1])) {
            throw new Exception\InvalidTokenException('Invalid token struct; missing either index 0 or 1');
        }

        if (! in_array($tokenStruct[0], $this->validTokens, true)) {
            throw new Exception\InvalidTokenException('Invalid token struct; invalid token at position 0');
        }
    }
private function assertTokenStruct ( $ tokenStruct ) { if ( ! is_array ( $ tokenStruct ) ) { throw new Exception \ InvalidTokenException ( 'Invalid token struct; must be an array' ) ; } if ( 2 > count ( $ tokenStruct ) ) { throw new Exception \ InvalidTokenException ( 'Invalid token struct; missing data' ) ; } if ( ! isset ( $ tokenStruct [ 0 ] ) || ! isset ( $ tokenStruct [ 1 ] ) ) { throw new Exception \ InvalidTokenException ( 'Invalid token struct; missing either index 0 or 1' ) ; } if ( ! in_array ( $ tokenStruct [ 0 ] , $ this -> validTokens , true ) ) { throw new Exception \ InvalidTokenException ( 'Invalid token struct; invalid token at position 0' ) ; } }
Assert that a token struct is valid.

@throws Exception\InvalidTokenException for any invalid token structures or elements.
Assert that a token struct is valid .