1  #![feature(anonymous_lifetime_in_impl_trait, gen_blocks, if_let_guard)]
 2  #![allow(unstable_name_collisions)] // Itertools::intersperse
 3  
 4  use std::fmt;
 5  
 6  mod color;
 7  pub use color::{
 8     COLORS,
 9     STYLE_GUTTER,
10     STYLE_HEADER_POSITION,
11  };
12  
13  pub mod report;
14  pub mod style;
15  
16  pub mod terminal;
17  
18  pub const INDENT: &str = "   ";
19  #[expect(clippy::cast_possible_wrap)]
20  pub const INDENT_WIDTH: isize = INDENT.len() as isize;
21  
22  pub trait Debug {
23     fn debug_styled(&self, writer: &mut dyn Write) -> fmt::Result;
24  }
25  
26  pub trait Display {
27     fn display_styled(&self, writer: &mut dyn Write) -> fmt::Result;
28  }
29  
30  pub fn display(display: &impl fmt::Display) -> impl Display {
31     struct FmtDisplay<'a, D: fmt::Display>(&'a D);
32  
33     impl<D: fmt::Display> Display for FmtDisplay<'_, D> {
34        fn display_styled(&self, writer: &mut dyn Write) -> fmt::Result {
35           write!(writer, "{inner}", inner = self.0)
36        }
37     }
38  
39     FmtDisplay(display)
40  }
41  
42  pub fn with<W: Write + ?Sized, T>(
43     writer: &mut W,
44     style: style::Style,
45     with: impl FnOnce(&mut W) -> T,
46  ) -> T {
47     let style_previous = writer.get_style();
48  
49     writer.set_style(style);
50     let result = with(writer);
51  
52     writer.set_style(style_previous);
53     result
54  }
55  
56  pub fn write(writer: &mut dyn Write, styled: &impl Display) -> fmt::Result {
57     styled.display_styled(writer)
58  }
59  
60  pub trait Write: fmt::Write {
61     fn width(&self) -> usize {
62        0
63     }
64  
65     fn width_max(&self) -> usize {
66        usize::MAX
67     }
68  
69     fn get_style(&self) -> style::Style;
70  
71     fn set_style(&mut self, style: style::Style);
72  
73     fn apply_style(&mut self) -> fmt::Result;
74  
75     fn write_report(
76        &mut self,
77        report: &report::Report,
78        location: &dyn Display,
79        source: &report::PositionStr<'_>,
80     ) -> fmt::Result;
81  }