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//! The goal of this crate is to provide fast, simple and easy binary serialization.
//!
//! ## Examples
//!
//! ```rust
//! #[macro_use]
//! extern crate speedy_derive;
//! extern crate speedy;
//!
//! use std::borrow::Cow;
//! use speedy::{Readable, Writable, Endianness};
//!
//! #[derive(PartialEq, Debug, Readable, Writable)]
//! enum Enum {
//!     A,
//!     B,
//!     C,
//! }
//!
//! #[derive(PartialEq, Debug, Readable, Writable)]
//! struct Struct< 'a > {
//!     number: u64,
//!     string: String,
//!     vector: Vec< u8 >,
//!     cow: Cow< 'a, [i64] >,
//!     float: f32,
//!     enumeration: Enum
//! }
//!
//! fn main() {
//!     let original = Struct {
//!         number: 0x12345678ABCDEF00,
//!         string: "A totally pointless string".to_owned(),
//!         vector: vec![ 1, 2, 3 ],
//!         cow: Cow::Borrowed( &[ 4, 5, 6 ] ),
//!         float: 3.1415,
//!         enumeration: Enum::C
//!     };
//!     let endian = Endianness::LittleEndian;
//!     let bytes = original.write_to_vec( endian ).unwrap();
//!     let deserialized: Struct =
//!         Struct::read_from_buffer( endian, &bytes ).unwrap();
//!
//!     assert_eq!( original, deserialized );
//! }
//! ```

extern crate byteorder;

mod utils;
mod readable;
mod readable_impl;
mod reader;
mod writable;
mod writable_impl;
mod writer;
mod context;
mod endianness;

pub use readable::Readable;
pub use reader::Reader;

pub use writable::Writable;
pub use writer::Writer;

pub use endianness::Endianness;
pub use context::Context;

#[cfg(test)]
mod tests {
    use std::io;
    use super::{
        Reader,
        Readable,
        Writer,
        Writable,
        Context,
        Endianness
    };

    #[derive(PartialEq, Debug)]
    struct SimpleStruct {
        a: u8,
        b: u8,
        c: u8
    }

    impl< C: Context > Writable< C > for SimpleStruct {
        fn write_to< 'a, T: ?Sized + Writer< 'a, C > >( &'a self, writer: &mut T ) -> io::Result< () > {
            writer.write_value( &self.a )?;
            writer.write_value( &self.b )?;
            writer.write_value( &self.c )?;

            Ok(())
        }
    }

    impl< 'a, C: Context > Readable< 'a, C > for SimpleStruct {
        fn read_from< R: Reader< 'a, C > >( reader: &mut R ) -> io::Result< Self > {
            let a = reader.read_u8()?;
            let b = reader.read_u8()?;
            let c = reader.read_u8()?;
            Ok( SimpleStruct { a, b, c } )
        }
    }

    #[test]
    fn simple_write_to_vec() {
        let value = SimpleStruct { a: 1, b: 2, c: 3 };
        let data = value.write_to_vec( Endianness::NATIVE ).unwrap();
        assert_eq!( data, vec![ 1, 2, 3 ] );
    }

    #[test]
    fn simple_read_from_stream() {
        let data = vec![ 1, 2, 3 ];
        let cursor = io::Cursor::new( data );
        let value = SimpleStruct::read_from_stream( Endianness::NATIVE, cursor ).unwrap();
        assert_eq!( value, SimpleStruct { a: 1, b: 2, c: 3 } );
    }

    #[test]
    fn simple_read_from_buffer() {
        let data = vec![ 1, 2, 3 ];
        let value = SimpleStruct::read_from_buffer( Endianness::NATIVE, &data ).unwrap();
        assert_eq!( value, SimpleStruct { a: 1, b: 2, c: 3 } );
    }

    #[test]
    fn read_write_u8_vec() {
        let original: Vec< u8 > = vec![ 1, 2, 3 ];
        let serialized = original.write_to_vec( Endianness::NATIVE ).unwrap();
        let deserialized: Vec< u8 > = Vec::< u8 >::read_from_buffer( Endianness::NATIVE, &serialized ).unwrap();
        assert_eq!( original, deserialized );
    }

    #[test]
    fn read_write_u64_vec() {
        let original: Vec< u64 > = vec![ 1, 2, 3 ];
        let serialized = original.write_to_vec( Endianness::NATIVE ).unwrap();
        let deserialized: Vec< u64 > = Vec::< u64 >::read_from_buffer( Endianness::NATIVE, &serialized ).unwrap();
        assert_eq!( original, deserialized );
    }

    #[test]
    fn read_write_string() {
        let original: String = "Hello world!".to_owned();
        let serialized = original.write_to_vec( Endianness::NATIVE ).unwrap();
        let deserialized: String = String::read_from_buffer( Endianness::NATIVE, &serialized ).unwrap();
        assert_eq!( original, deserialized );
    }
}