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pub mod into_reader;
pub mod slice_reader;
pub mod bytes_reader;
pub mod ioreadeof_reader;

pub use self::into_reader::IntoReader;
pub use self::slice_reader::SliceReader;
pub use self::bytes_reader::BytesReader;
pub use self::ioreadeof_reader::IoreadeofReader;


use marker::Marker;



pub trait Read {
    type Datum;

    fn has (&mut self, len: u8) -> bool;

    fn has_long (&mut self, len: usize) -> bool;

    fn skip (&mut self, len: u8) -> u8;

    fn skip_long (&mut self, len: usize) -> usize;

    fn byte_at (&mut self, byte: u8, at: usize) -> bool;

    fn byte_at_start (&mut self, byte: u8) -> bool;

    fn bytes_2_at (&mut self, bytes: [u8; 2], at: usize) -> bool;

    fn bytes_2_at_start (&mut self, bytes: [u8; 2]) -> bool;

    fn bytes_3_at (&mut self, bytes: [u8; 3], at: usize) -> bool;

    fn bytes_3_at_start (&mut self, bytes: [u8; 3]) -> bool;

    fn bytes_4_at (&mut self, bytes: [u8; 4], at: usize) -> bool;

    fn bytes_4_at_start (&mut self, bytes: [u8; 4]) -> bool;

    fn bytes_at (&mut self, bytes: &[u8], at: usize) -> bool;

    fn bytes_at_start (&mut self, bytes: &[u8]) -> bool;

    fn get_byte_at (&mut self, at: usize) -> Option<u8>;

    fn get_byte_at_start (&mut self) -> Option<u8>;

    fn get_bytes_2_at (&mut self, at: usize) -> Option<(u8, u8)>;

    fn get_bytes_2_at_start (&mut self) -> Option<(u8, u8)>;

    fn get_bytes_3_at (&mut self, at: usize) -> Option<(u8, u8, u8)>;

    fn get_bytes_3_at_start (&mut self) -> Option<(u8, u8, u8)>;

    fn get_bytes_4_at (&mut self, at: usize) -> Option<(u8, u8, u8, u8)>;

    fn get_bytes_4_at_start (&mut self) -> Option<(u8, u8, u8, u8)>;

    fn consume (&mut self, len: u8) -> Marker;

    fn consume_long (&mut self, len: usize) -> Marker;

    fn get_datum (&mut self, index: usize) -> Option<Self::Datum>;

    fn slice (&mut self, len: usize) -> Option<&[u8]> { self.slice_at (0, len) }

    fn slice_at (&mut self, at: usize, len: usize) -> Option<&[u8]>;
}