1 | use std::fmt; |
2 | use std::io; |
3 | |
4 | pub trait AnyWrite { |
5 | type Wstr: ?Sized; |
6 | type Error; |
7 | |
8 | fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<(), Self::Error>; |
9 | |
10 | fn write_str(&mut self, s: &Self::Wstr) -> Result<(), Self::Error>; |
11 | } |
12 | |
13 | impl<'a> AnyWrite for dyn fmt::Write + 'a { |
14 | type Wstr = str; |
15 | type Error = fmt::Error; |
16 | |
17 | fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<(), Self::Error> { |
18 | fmt::Write::write_fmt(self, args:fmt) |
19 | } |
20 | |
21 | fn write_str(&mut self, s: &Self::Wstr) -> Result<(), Self::Error> { |
22 | fmt::Write::write_str(self, s) |
23 | } |
24 | } |
25 | |
26 | impl<'a> AnyWrite for dyn io::Write + 'a { |
27 | type Wstr = [u8]; |
28 | type Error = io::Error; |
29 | |
30 | fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<(), Self::Error> { |
31 | io::Write::write_fmt(self, fmt) |
32 | } |
33 | |
34 | fn write_str(&mut self, s: &Self::Wstr) -> Result<(), Self::Error> { |
35 | io::Write::write_all(self, buf:s) |
36 | } |
37 | } |
38 | |