Hello all,
I’m having some trouble when using external crates in a module. For example the
following code won’t compile.
But if I put everything in main.rs it will compile.
(Note: the code is also here https://gist.github.com/ollie/90e266f4cbfcad21501d
if it gets mangled along the way.)
main.rs:
use lib::decode_json_file;
mod lib;
fn main() {
decode_json_file();
}
lib.rs:
extern crate serialize;
use self::serialize::json;
// This has no effect:
// use self::serialize::{Decodable, Decoder};
#[deriving(Show, Decodable)]
struct Foo {
foo: u8,
}
pub fn decode_json_file() {
let raw_json = "{ \"foo\": 1 }";
let foo: Foo = json::decode(raw_json).unwrap();
println!("{}", foo);
}
When I run rustc main.rs, it prints this:
lib.rs:7:18: 7:27 error: failed to resolve. Did you mean `self::serialize`?
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
lib.rs:7:18: 7:27 error: attempt to bound type parameter with a nonexistent
trait `serialize::Decoder`
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
lib.rs:7:18: 7:27 error: failed to resolve. Did you mean `self::serialize`?
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
lib.rs:7:18: 7:27 error: attempt to implement a nonexistent trait
`serialize::Decodable`
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
lib.rs:7:18: 7:27 error: failed to resolve. Did you mean
`self::serialize::Decodable`?
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
lib.rs:7:18: 7:27 error: unresolved name `serialize::Decodable::decode`.
lib.rs:7 #[deriving(Show, Decodable)]
^~~~~~~~~
note: in expansion of #[deriving]
lib.rs:7:1: 7:29 note: expansion site
error: aborting due to 6 previous errors
Am I doing something wrong?
Thank you and have a nice day,
Ollie
_______________________________________________
Rust-dev mailing list
[email protected]
https://mail.mozilla.org/listinfo/rust-dev
