//! obj/src/lib.rs --- Objective type library

 mod err;

 pub use ron;

 use ron::extensions::Extensions;

 use serde::{de::DeserializeOwned, Deserialize, Serialize};

 use std::io;

 /// common trait for all config modules. This trait provides functions

 /// for de/serializing to/from RON, updating fields, and formatting.

 pub trait Configure: Objective {

   fn update(&self) -> Result<()> {

     Ok(())

   }

 }

 /// Objective trait

 /// Define Object behaviors, implemented by Objects

 pub trait Objective {

   fn encode(&self) -> Result<Vec<u8>>

   where

     Self: Serialize,

   {

     Ok(bincode::serialize(self)?)

   }

   fn encode_into<W>(&self, writer: W) -> Result<()>

   where

     W: io::Write,

     Self: Serialize,

   {

     Ok(bincode::serialize_into(writer, self)?)

   }

   fn decode<'a>(&self, bytes: &'a [u8]) -> Result<Self>

   where

     Self: Deserialize<'a>,

   {

     Ok(bincode::deserialize(bytes)?)

   }

   fn decode_from<R>(&self, rdr: R) -> Result<Self>

   where

     R: io::Read,

     Self: DeserializeOwned,

   {

     Ok(bincode::deserialize_from(rdr)?)

   }

   fn to_ron_writer<W>(&self, writer: W) -> Result<()>

   where

     W: io::Write,

     Self: Serialize,

   {

     Ok(ron::ser::to_writer_pretty(

       writer,

       &self,

       ron::ser::PrettyConfig::new()

         .indentor("  ".to_owned())

         .extensions(Extensions::all()),

     )?)

   }

   fn to_ron_string(&self) -> Result<String>

   where

     Self: Serialize,

   {

     Ok(ron::ser::to_string_pretty(

       &self,

       ron::ser::PrettyConfig::new().indentor("  ".to_owned()),

     )?)

   }

   fn from_ron_reader<R>(&self, mut rdr: R) -> Result<Self>

   where

     R: io::Read,

     Self: DeserializeOwned,

   {

     let mut bytes = Vec::new();

     rdr.read_to_end(&mut bytes)?;

     Ok(ron::de::from_bytes(&bytes)?)

   }

   fn from_ron_str<'a>(s: &'a str) -> Result<Self>

   where

     Self: Deserialize<'a>,

   {

     Ok(ron::de::from_bytes(s.as_bytes())?)

   }

   fn to_json_writer<W>(&self, writer: W) -> Result<()>

   where

     W: io::Write,

     Self: Serialize,

   {

     //    let formatter = serde_json::ser::PrettyFormatter::with_indent(b"  ");

     Ok(serde_json::ser::to_writer_pretty(writer, &self)?)

   }

   fn to_json_string(&self) -> Result<String>

   where

     Self: Serialize,

   {

     Ok(serde_json::ser::to_string_pretty(&self)?)

   }

   fn from_json_reader<R>(&self, mut rdr: R) -> Result<Self>

   where

     R: io::Read,

     Self: DeserializeOwned,

   {

     let mut bytes = Vec::new();

     rdr.read_to_end(&mut bytes)?;

     Ok(serde_json::de::from_slice(&bytes)?)

   }

   fn from_json_str<'a>(s: &'a str) -> Result<Self>

   where

     Self: Deserialize<'a>,

   {

     Ok(serde_json::de::from_slice(s.as_bytes())?)

   }

 }