46 lines
1.1 KiB
Rust
46 lines
1.1 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
// no-pretty-expanded
|
|
|
|
#![allow(unused_must_use, dead_code)]
|
|
#![feature(macro_rules)]
|
|
|
|
use std::io::MemWriter;
|
|
use std::fmt;
|
|
use std::fmt::FormatWriter;
|
|
|
|
struct Foo<'a> {
|
|
writer: &'a mut Writer+'a,
|
|
other: &'a str,
|
|
}
|
|
|
|
struct Bar;
|
|
|
|
impl fmt::FormatWriter for Bar {
|
|
fn write(&mut self, _: &[u8]) -> fmt::Result {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
fn borrowing_writer_from_struct_and_formatting_struct_field(foo: Foo) {
|
|
write!(foo.writer, "{}", foo.other);
|
|
}
|
|
|
|
fn main() {
|
|
let mut w = MemWriter::new();
|
|
write!(&mut w as &mut Writer, "");
|
|
write!(&mut w, ""); // should coerce
|
|
println!("ok");
|
|
|
|
let mut s = Bar;
|
|
write!(&mut s, "test");
|
|
}
|