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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
c34b1796 | 11 | |
d9579d0f | 12 | #![feature(rustc_private)] |
1a4d82fc | 13 | |
1a4d82fc JJ |
14 | extern crate serialize; |
15 | ||
c34b1796 AL |
16 | use std::io::Cursor; |
17 | use std::io::prelude::*; | |
1a4d82fc | 18 | use std::fmt; |
1a4d82fc JJ |
19 | use std::slice; |
20 | ||
21 | use serialize::{Encodable, Encoder}; | |
22 | use serialize::json; | |
9e0c209e | 23 | use serialize::opaque; |
1a4d82fc JJ |
24 | |
25 | #[derive(Encodable)] | |
26 | struct Foo { | |
27 | baz: bool, | |
28 | } | |
29 | ||
30 | #[derive(Encodable)] | |
31 | struct Bar { | |
c34b1796 | 32 | froboz: usize, |
1a4d82fc JJ |
33 | } |
34 | ||
35 | enum WireProtocol { | |
36 | JSON, | |
9e0c209e | 37 | Opaque, |
1a4d82fc JJ |
38 | // ... |
39 | } | |
40 | ||
c34b1796 | 41 | fn encode_json<T: Encodable>(val: &T, wr: &mut Cursor<Vec<u8>>) { |
1a4d82fc JJ |
42 | write!(wr, "{}", json::as_json(val)); |
43 | } | |
9e0c209e SL |
44 | fn encode_opaque<T: Encodable>(val: &T, wr: &mut Cursor<Vec<u8>>) { |
45 | let mut encoder = opaque::Encoder::new(wr); | |
1a4d82fc JJ |
46 | val.encode(&mut encoder); |
47 | } | |
48 | ||
49 | pub fn main() { | |
50 | let target = Foo{baz: false,}; | |
c34b1796 | 51 | let mut wr = Cursor::new(Vec::new()); |
1a4d82fc JJ |
52 | let proto = WireProtocol::JSON; |
53 | match proto { | |
54 | WireProtocol::JSON => encode_json(&target, &mut wr), | |
9e0c209e | 55 | WireProtocol::Opaque => encode_opaque(&target, &mut wr) |
1a4d82fc JJ |
56 | } |
57 | } |